Mechanical timing fire closing device for household stove

Abstract

The utility model discloses a mechanical timing fire closing device for a household stove, belongs to the technical field of timing fire closing devices, and solves the problems that in the prior art, fire is manually closed, a fire closing device is easy to damage, and a shaft core is complex in structure, the mechanical timing fire closing device comprises a stove shaft core, and the lower portion of the stove shaft core is detachably connected with a stove shaft. The upper part of the stove shaft core is detachably connected with a knob shaft core; the outer part of the stove shaft core is sleeved with a head wheel, the end part of the head wheel is connected with a spring, the side part of the head wheel is connected with a timing movement group, and the timing movement group is used for controlling the rotating speed of the head wheel; a positioning clamping piece is fixedly connected to the end of the head wheel, and a special-shaped hole is formed in the middle of the positioning clamping piece. The shape of the special-shaped hole is matched with that of a shaft core of the stove shaft; the stove shaft core penetrates through the special-shaped hole and is inserted into the head wheel, and the technical effects that the durability of the timing fire turning-off device is improved through a mechanical structure, and the structure of the shaft core is simplified are achieved.

Description

Technical Field

[0001] This utility model belongs to the technical field of timed flame shut-off devices, specifically relating to a mechanical timed flame shut-off device for household stoves. Background Technology

[0002] In existing technologies, some devices with timer-activated flameout mechanisms are electronic, some using three or more 1.5V dry cell batteries. Because these batteries are close to the stove's heat source, they are prone to explosion, or the circuit board may be damaged by high-temperature steam, causing the timer to malfunction. Others use a 220V power supply to activate the flameout device, which poses a risk of electrical fires if the stove is placed near a power source, making this unacceptable to customers.

[0003] This patent addresses all the aforementioned drawbacks by designing a flame stopper that uses a mechanical timer as the timing power source and adds a cooperating device with the stove shaft and knob to achieve timed flame shut-off. The mechanical timed flame shut-off is achieved through a spring and mechanism structure, and its internal shaft structure is simple, easy to manufacture, and conducive to the production and promotion of the equipment. Utility Model Content

[0004] In view of the problems of manual shutdown, easy damage to shutdown devices and complex shaft structure in the existing technology, this utility model provides a solution that aims to improve the durability of the timed shutdown device through mechanical structure and simplify the shaft structure.

[0005] The technical solution adopted in this utility model is as follows:

[0006] A mechanical timer for a household stove includes: a stove shaft core, with a stove shaft detachably connected to the lower part of the stove shaft core, and a knob core detachably connected to the upper part of the stove shaft core;

[0007] A head wheel is fitted around the outside of the stove shaft core. A spring is connected to the end of the head wheel, and a timing mechanism is connected to the side of the head wheel. The timing mechanism is used to control the rotation speed of the head wheel.

[0008] A positioning card is fixedly connected to the end of the head wheel, and a shaped hole is provided in the middle of the positioning card; the shaped hole matches the shape of the stove shaft core; the stove shaft core passes through the shaped hole and is inserted into the interior of the head wheel.

[0009] The above-mentioned scheme allows the knob shaft to rotate the stove shaft via the stove shaft core, thereby controlling the stove's opening and closing. Simultaneously, rotation drives a spring, storing energy. Releasing the knob shaft core allows the spring to rotate the stove shaft core. A timing mechanism controls the release speed of the spring's kinetic energy, causing the stove shaft core to slowly return to the off position. This structure overcomes the vulnerability of electronic flame-off devices. A positioning clip at the end of the head wheel allows the stove shaft core to be inserted into the head wheel, causing it to rotate. The irregularly shaped hole matches the shape of the stove shaft core, avoiding the need for irregular machining of the head wheel's inner wall. This allows a standard cylindrical stove shaft core to be adapted to an irregularly shaped one, reducing the difficulty and cost of component manufacturing.

[0010] The timing mechanism assembly includes a second gear, a third gear, a fourth gear, an escape wheel, an escape fork, a balance wheel assembly, and a balance spring. The head wheel, the second gear, the third gear, the fourth gear, and the escape wheel are sequentially meshed and connected. The escape wheel, the escape fork, the balance wheel assembly, and the balance spring are configured to work together.

[0011] The end of the knob shaft is provided with a stove knob, and the inside of the stove knob is provided with a D-shaped hole;

[0012] A D-shaped post is provided at one end of the knob shaft near the knob of the stove.

[0013] The above solution enables the stove knob to drive the knob shaft to rotate, and the stove knob can be removed from the knob shaft during assembly.

[0014] The knob shaft is inserted into the cooktop shaft. A polygonal post is provided at one end of the knob shaft near the cooktop shaft. A polygonal hole is provided inside the cooktop shaft. The polygonal post and the polygonal hole cooperate with each other.

[0015] Using the above solution, the knob shaft can be adjusted at multiple angles relative to the stove shaft. When the position on the stove knob does not coincide with the initial turn-off position, the knob shaft can be pulled out of the stove shaft, rotated to adjust the angle, and then reinserted into the stove shaft. The adjustment levels are determined by the number of sides of its polygon.

[0016] The side of the stove shaft core is provided with a protrusion, which passes through the irregular hole and is inserted into the head wheel. The irregular hole is used to restrict the relative rotation of the protrusion within the head wheel.

[0017] The above solution allows the protrusion to further improve the limiting effect of the irregular hole on the axis of the stove.

[0018] The end of the stove shaft core near the positioning card has a D-shaped structure, and the protrusion is located in the plane of the D-shaped structure.

[0019] The end of the head wheel is provided with a milled notch, and the positioning card is engaged with the top of the milled notch.

[0020] The timing mechanism is externally mounted in a mounting box.

[0021] By adopting the above solution, the internal timing mechanism can be protected by the mounting box, thereby extending its service life.

[0022] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0023] 1. The knob shaft can rotate the stove shaft through the stove shaft core, thereby controlling the stove's opening and closing. Simultaneously, rotation drives a spring, storing energy. Releasing the knob shaft core allows the spring to rotate the stove shaft core. The timing mechanism controls the release speed of the spring's kinetic energy, causing the stove shaft core to slowly return to the off position. This structure overcomes the vulnerability of electronic flame-off devices. The positioning clip at the end of the head wheel allows the stove shaft core to be inserted into the head wheel, enabling simultaneous rotation of the head wheel and stove shaft core. The irregularly shaped hole matches the shape of the stove shaft core, avoiding the need for irregular machining of the head wheel's inner wall. This allows the hollow cylindrical head wheel to fit the irregularly shaped stove shaft core, reducing the difficulty and cost of component manufacturing.

[0024] 2. The D-shaped hole on the stove knob and the D-shaped post on the knob shaft enable the stove knob to drive the knob shaft to rotate, and the stove knob can be removed from the knob shaft during assembly.

[0025] 3. It can achieve multi-angle adjustment of the knob shaft to the stove shaft. When the position on the stove knob does not coincide with the initial turn-off position, the knob shaft can be pulled out from the stove shaft, rotated to adjust the angle, and then reinserted into the stove shaft. The adjustment range is determined by the number of sides of its polygon.

[0026] 4. The protruding part can further improve the limiting effect of the irregular hole on the axis of the stove.

[0027] 5. The internal timing mechanism can be protected by the mounting box, thus extending its service life. Attached Figure Description

[0028] This utility model will be described by way of example and with reference to the accompanying drawings, wherein:

[0029] Figure 1 This is a side view schematic diagram of the internal structure of this utility model;

[0030] Figure 2 This is a top-view structural diagram of the timing mechanism assembly of this utility model;

[0031] Figure 3 This is a schematic diagram of the knob shaft structure of this utility model;

[0032] Figure 4 This is a schematic diagram of the stove shaft core structure of this utility model;

[0033] Figure 5 This is a schematic diagram of the positioning card structure of this utility model;

[0034] Figure 6 This is a schematic diagram of the head wheel structure of this utility model.

[0035] Reference numerals in the attached diagram: 1-Head wheel; 2-Second gear; 3-Third gear; 4-Fourth gear; 5-Fifth gear; 6-Sixth gear; 7-Balance wheel assembly; 8-Balance wheel spring; 9-Positioning card; 11-Mounting box; 12-Cooktop surface; 13-Cooktop shaft; 14-Cooktop knob; 15-Knob shaft; 16-Cooktop shaft core; 17-Spring; 18-Timer mechanism assembly; 19-Cooktop switch. Detailed Implementation

[0036] All features disclosed in this specification, or all steps in all disclosed methods or processes, may be combined in any way, except for mutually exclusive features and / or steps.

[0037] The following is combined with Figures 1-6 This utility model will be described in detail.

[0038] Example 1:

[0039] It includes a cooker shaft core, the lower part of which is detachably connected to a cooker shaft, and the upper part of which is detachably connected to a knob shaft core;

[0040] The cooker shaft core 16 is fitted with a head wheel 1, the end of the head wheel 1 is connected to a spring 17, and a timing mechanism 18 is provided on the side of the head wheel 1. The timing mechanism 18 is used to control the rotation speed of the head wheel 1.

[0041] A positioning card 9 is fixedly connected to the end of the head wheel 1. The positioning card 9 has a shaped hole in its center. The shaped hole matches the shape of the cooktop shaft core 16. The cooktop shaft core 16 passes through the shaped hole and is inserted into the head wheel. The shaped hole limits the movement of the cooktop shaft core 16 within the head wheel 1, restricting its relative rotation. The structure of the positioning card 9 is as follows: Figure 5 As shown, the structure of the head wheel 1 is as follows: Figure 6 As shown, where Figure 6 AA is a top-down view of the front wheel.

[0042] In this embodiment, the timing movement assembly 18 includes a second gear 2, a third gear 3, a fourth gear 4, an escape wheel 5, an escape fork 6, a balance wheel assembly 7, and a balance wheel hairspring 8. The second gear 2, the third gear 3, the fourth gear 4, and the escape wheel 5 are sequentially meshed and connected. The escape fork 6, the balance wheel assembly 7, and the balance wheel hairspring 8 are configured to cooperate. A first gear is fixedly mounted on the side of the head wheel 1, and the first gear meshes with the second gear 2. It should be noted that the meshing method and specific installation structure of the timing movement structure formed by this escapement mechanism and gear assembly are existing technologies and not innovative points of this application; therefore, they will not be described in detail in this application.

[0043] In this embodiment, a stove knob 14 is provided at the end of the knob shaft core 15, and a D-shaped hole is provided inside the stove knob 14;

[0044] A D-shaped post is provided at one end of the knob shaft 15 near the cooktop knob 14. This structure allows the cooktop knob 14 and the knob shaft 15 to rotate simultaneously and slide axially, but not to rotate relative to each other. Its specific structure is as follows... Figure 3 As shown, AA is a bottom view of the knob shaft 15, and BB is a top view of the knob shaft 15.

[0045] In this embodiment, the knob shaft 15 is inserted into the stove shaft 16, wherein a polygonal post is provided at one end of the knob shaft 15 near the stove shaft, and a polygonal hole is provided inside the stove shaft, and the polygonal post cooperates with the polygonal hole.

[0046] In this embodiment, a protrusion is provided on the side of the cooktop shaft core 16. The protrusion passes through the irregular hole and is inserted into the head wheel 1. The irregular hole limits the protrusion relative to the head wheel 1, restricting the relative rotation of the protrusion within the head wheel 1. The protrusion further enhances the limiting effect of the irregular hole on the cooktop shaft core 16.

[0047] In this embodiment, the cooktop shaft core 16 has a D-shaped structure, and the protrusion is disposed within the plane of the D-shaped structure; the plane is the side connecting the two ends of the arc surface in the D-shaped structure. The D-shaped structure of the cooktop shaft core 16 can be adapted to the cooktop shaft 13, which also has a D-shaped structure. Its specific structure is as follows... Figure 5 As shown, AA is a bottom view of the cooktop shaft core 16, and BB is a top view of the cooktop shaft core 16.

[0048] In this embodiment, the end of the head wheel 1 is provided with a milled notch, and the positioning card 9 is snapped onto the top of the milled notch. The milled notch can improve the assembly efficiency of the positioning card 9 and the end of the head wheel 1, and fix the relative angle between the positioning card 9 and the head wheel 1 during installation.

[0049] In this embodiment, the aforementioned stove shaft core 16, head wheel 1, spring 17, and timer mechanism 18 are all housed within the mounting box 11. During use, the stove shaft core 16 is aligned with the stove shaft 13, and the mounting box 11 is fitted over the stove shaft 13 and fixed to the stove surface 12. Then, the stove knob 14 and knob shaft core insert 15 are inserted into the stove shaft core 16. It should be noted that the stove knob 14 can be adjusted to the initial flame-off angle. If, after insertion, the indicator point on the stove knob 14 is not at the initial flame-off position, the stove knob 14 along with the knob shaft core 15 can be pulled out, and the knob shaft core 15 can be adjusted until the indicator point on the stove knob 14 coincides with the initial flame-off position.

[0050] In use, turning the stove knob 14 turns on the stove switch 19 via the knob shaft 15, stove shaft 16, and stove shaft 13. Simultaneously, winding the spring 17 tightens the spring. After releasing the stove knob 14, the spring drives the head wheel 1, stove shaft 16, and stove shaft 13 to slowly rotate. This rotation speed is controlled by the timer mechanism 18. Once the head wheel 1 and stove shaft 16 have fully returned to their original positions, i.e., the position on the stove knob 14 returns to the initial ignition off position, the stove automatically shuts off. In this embodiment, the stove shaft 15 has a square hole (quadrilateral hole), and a square post is provided at the end of the knob shaft 15. This structure allows for 90° position adjustments within the stove shaft 16.

[0051] The embodiments described above merely illustrate specific implementation methods of this application, and while the descriptions are detailed and specific, they should not be construed as limiting the scope of protection of this application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the technical solution of this application, and these modifications and improvements all fall within the scope of protection of this application.

Claims

1. A mechanical timer-type flame shut-off device for household stoves, characterized in that, include: The stove shaft core (16) is detachably connected to the stove shaft (13) at its lower part, and to the knob shaft core (15) detachably connected to the upper part of the stove shaft core (16). The stove shaft core (16) is fitted with a head wheel (1), the end of the head wheel (1) is connected to a spring (17), and the side of the head wheel (1) is connected to a timing mechanism (18), which is used to control the rotation speed of the head wheel (1). The head wheel (1) is fixedly connected to a positioning card (9) at its end. The positioning card (9) has a shaped hole in the middle. The shaped hole matches the shape of the stove shaft core (16). The stove shaft core (16) passes through the shaped hole and is inserted into the head wheel (1).

2. The mechanical timer-type flame shut-off device for household stoves according to claim 1, characterized in that, The timing mechanism assembly includes a second gear (2), a third gear (3), a fourth gear (4), an escape wheel (5), an escape fork (6), a balance wheel assembly (7), and a balance spring (8). The head wheel (1), the second gear (2), the third gear (3), the fourth gear (4), and the escape wheel (5) are sequentially meshed and connected. The escape wheel (5), the escape fork (6), the balance wheel assembly (7), and the balance spring (8) are configured in a coordinated manner.

3. The mechanical timer-type flame shut-off device for household stoves according to claim 1, characterized in that, The end of the knob shaft (15) is provided with a stove knob (14), and the inside of the stove knob (14) is provided with a D-shaped hole; The knob shaft (15) has a D-shaped post at one end near the stove knob (14).

4. The mechanical timer-type flame shut-off device for household stoves according to claim 1, characterized in that, The knob shaft (15) is inserted into the stove shaft (16). A polygonal post is provided at one end of the knob shaft (15) near the stove shaft (16). A polygonal hole is provided inside the stove shaft (16). The polygonal post and the polygonal hole cooperate with each other.

5. The mechanical timer for shutting off a household stove according to claim 1, characterized in that, The side of the stove shaft core (16) is provided with a protrusion. The protrusion passes through the irregular hole and is inserted into the head wheel (1). The irregular hole is used to restrict the relative rotation of the protrusion in the head wheel (1).

6. The mechanical timer-type flame stopper for household stoves according to claim 5, characterized in that, The end of the stove shaft core (16) near the positioning card is a D-shaped structure, and the protrusion is located in the plane of the D-shaped structure.

7. The mechanical timer-type flame shut-off device for household stoves according to claim 1, characterized in that, The end of the head wheel (1) is provided with a milled notch, and the positioning card (9) is engaged with the top of the milled notch.

8. The mechanical timer for shutting off a household stove according to claim 1, characterized in that, The timing mechanism assembly (18) is externally provided with a mounting box (11).

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