Transmission wheel and transmission wheel assembly for automatic timing fire closing device

Abstract

The utility model relates to the technical field of gas stove accessories, in particular to a transmission wheel and a transmission wheel assembly for an automatic timing fire closing device. Comprising a transmission wheel body and an axial through hole formed in the axis of the transmission wheel body, transmission teeth are arranged on one axial side of the transmission wheel body, and a transmission boss is arranged on the other axial side of the transmission wheel body. The transmission device is low in cost and convenient to machine, the transmission boss is arranged, so that friction force between the transmission wheel and the driving gear is small, matching is smoother, the jamming condition is avoided, it is guaranteed that fire closing can be completed in time through the fire closing device, and fire hazards are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of gas -cooker accessories, concretely is a transmission wheel and transmission wheel subassembly for automatic timing fire extinguisher. BACKGROUND

[0002] The current gas stove does not have the automatic fire extinguishing function, when forgetting to turn off the fire, it is easy to cause the fire. The current solution is to install an automatic fire extinguishing device on the fire switch of the gas stove.

[0003] Patent 202021673219.5 an automatic timing fire extinguisher for gas stove can realize automatic fire extinguishing, however, the meshing between the driving gear and the transition gear is too tight, and the jamming situation often occurs during use. Usually, the user of the fire extinguisher trusts that the fire extinguisher can complete the fire extinguishing in time, and will not pay extra attention to whether the fire extinguisher has completed the fire extinguishing, therefore, when the jamming situation occurs, the fire extinguishing cannot be completed, and the probability of fire will greatly increase. SUMMARY

[0004] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a transmission wheel and transmission wheel subassembly for automatic timing fire extinguisher to solve the problems involved in the background art.

[0005] In order to achieve the above purpose, the utility model provides the following technical scheme: a transmission wheel for automatic timing fire extinguisher, including transmission wheel body, axial through hole arranged at the axial center of transmission wheel body, the axial side of transmission wheel body is equipped with transmission gear, the other side of transmission wheel body is equipped with transmission boss.

[0006] Further, the transmission gear is provided with one or more.

[0007] Further, the transmission boss is provided with one or more.

[0008] Further, the transmission wheel body includes boss fixing piece, and the transmission boss is arranged on the outer circumferential side or the inner circumferential side of the boss fixing piece.

[0009] Further, the boss fixing piece is cylindrical or cylindrical, and the central axis of the boss fixing piece coincides with the central axis of the transmission wheel body.

[0010] Further, the two sides of the transmission boss are tangent contact connected with the helical teeth of the driving gear, and the contact surface between the transmission boss and the driving gear is an arc surface.

[0011] Or, the transmission boss is arranged on one side of the driving gear, the opposite side of the transmission gear provided with the helical teeth is provided with the helical teeth, and the helical teeth are tangent contact connected with the two sides of the transmission boss of the driving gear.

[0012] Further, the transmission boss is a sector.

[0013] Further, the length of the transmission boss near the side of the transmission wheel body is less than the length of the side away from the transmission wheel body.

[0014] A transmission wheel assembly for an automatic timing fire extinguisher, comprising a transmission shaft, a bevel gear, a transmission wheel, a spring and a driving gear coaxially sleeved on the transmission shaft in sequence, the driving gear rotates with the transmission shaft;

[0015] One side of the bevel gear is in meshing connection with the transmission teeth of the transmission wheel;

[0016] One side of the transmission wheel provided with a transmission boss is in meshing connection with the driving gear.

[0017] Further, it further comprises a bevel gear seat for fixing the bevel gear, a transmission wheel seat for fixing the transmission wheel and the spring, and a driving gear seat for fixing the driving gear.

[0018] A switch mechanism for an automatic timing fire extinguisher, comprising the transmission wheel or the transmission wheel assembly.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] The utility model discloses low cost, convenient processing, sets up transmission boss, makes the friction between transmission wheel and driving gear small, and the cooperation is more smooth, avoids the emergence of the situation of jam, guarantees that fire extinguisher can complete the fire extinguishing in time, reduces the fire hazard. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is the first three-dimensional structure schematic view of embodiment 1 of the utility model;

[0022] Figure 2 It is the second three-dimensional structure schematic view of embodiment 1 of the utility model;

[0023] Figure 3 It is the connection structure schematic view of transmission wheel and driving gear of embodiment 2 of the utility model;

[0024] Figure 4 It is the connection structure schematic view of transmission wheel and driving gear of embodiment 1, 3 of the utility model;

[0025] Figure 5 It is the connection structure schematic view of transmission wheel assembly of embodiment 3 of the utility model;

[0026] In the drawing:

[0027] Wheel body 1, axial through hole 2, transmission teeth 3, transmission boss 4, boss fixing part 5, helical tooth 6;

[0028] Transmission wheel 100, bevel gear 300, spring 400, driving gear 500, bevel gear base 600, transmission wheel base 700, driving gear base 800. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application. Embodiment 1

[0030] As shown in FIG. Figures 1-2 A transmission wheel for an automatic timing fire extinguisher, comprising a transmission wheel body 1, an axial through hole 2 arranged at the axial center of the transmission wheel body 1, a transmission tooth 3 arranged at one axial side of the transmission wheel body 1, and a transmission boss 4 arranged at the other axial side of the transmission wheel body 1. The transmission tooth 3 is provided with two. The transmission boss 4 is provided with two.

[0031] The transmission wheel body 1 comprises a boss fixing member 5, and the transmission boss 4 is arranged at the outer circumferential side or the outer circumferential side of the boss fixing member 5. The boss fixing member 5 is a cylinder or a part of a cylinder, and the central axis of the boss fixing member 5 coincides with the central axis of the transmission wheel body 1. The transmission boss 4 is a sector. The length of the transmission boss 4 close to one side of the transmission wheel body 1 is less than the length of the transmission boss 4 away from one side of the transmission wheel body 1. The two sides of the transmission boss 4 are tangent to the spiral tooth 6 of the driving gear 500, and the contact surface between the transmission boss 4 and the driving gear 500 is an arc surface. Embodiment 2

[0032] The same as embodiment 1 will not be described again, and the difference is that:

[0033] As shown in FIG. Figure 3 The transmission boss 4 is arranged at one side of the driving gear 500, the opposite side of the transmission wheel 100 provided with the transmission tooth 3 is provided with the spiral tooth 6, and the spiral tooth 6 is tangent to the two sides of the transmission boss 4 on the driving gear 500. Embodiment 3

[0034] As shown in FIG. Figures 4-5As shown in the drawings, a transmission wheel assembly for an automatic timing fire extinguisher comprises a bevel gear 300, a transmission wheel 100, a spring 400 and a driving gear 500 coaxially sleeved on a transmission shaft in sequence, the driving gear 500 rotates with the transmission shaft; further comprising a bevel gear seat 600 for fixing the bevel gear 300, a transmission wheel seat 700 for fixing the transmission wheel 100 and the spring 400, and a driving gear seat 800 for fixing the driving gear 500.

[0035] The transmission wheel 100 comprises a transmission wheel body 1, an axial through hole 2 arranged at the axial center of the transmission wheel body 1, a transmission tooth 3 arranged at one axial side of the transmission wheel body 1, and a transmission boss 4 arranged at the other axial side of the transmission wheel body 1. The transmission tooth 3 is provided with two. The transmission boss 4 is provided with two. The transmission wheel body 1 comprises a boss fixing member 5, and the transmission boss 4 is arranged at the outer circumferential side of the boss fixing member 5. The boss fixing member 5 is a cylinder or a part of a cylinder, and the central axis of the boss fixing member 5 coincides with the central axis of the transmission wheel body 1. The transmission boss 4 is a sector. The length of the transmission boss 4 close to one side of the transmission wheel body 1 is less than the length of the transmission boss 4 away from one side of the transmission wheel body 1. The two sides of the transmission boss 4 are tangent to the spiral tooth 6 of the driving gear 500, and the contact surface between the transmission boss 4 and the driving gear 500 is an arc surface.

[0036] One side of the bevel gear 300 is engaged with the transmission tooth 3 of the transmission wheel 100. One side of the transmission wheel 100 provided with the transmission boss 4 is engaged with the driving gear 500, and the boss fixing member 5 of the transmission wheel 100 is arranged inside the driving gear 500. Embodiment 4

[0037] By Figures 1-5 As shown in the drawings, a switch mechanism for an automatic timing fire extinguisher comprises the transmission wheel assembly of embodiment 3.

[0038] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A drive wheel for an automatic timing cut-out, characterised in that: The transmission wheel body, the axial through hole arranged at the axial center of the transmission wheel body, the transmission teeth arranged at one axial side of the transmission wheel body, and the transmission boss arranged at the other axial side of the transmission wheel body; The transmission teeth are one or more; The transmission boss is one or more; The transmission wheel body comprises a boss fixing member, and the transmission boss is arranged at the outer circumferential side or the inner circumferential side of the boss fixing member.

2. The drive wheel for an automatic timing spark arrester as defined in claim 1 wherein: The boss fixing member is a cylindrical or cylindrical type, and the central axis of the boss fixing member coincides with the central axis of the transmission wheel body.

3. The drive wheel for an automatic timing spark arrester as defined in claim 1 wherein: The two sides of the transmission boss are in tangential contact with the helical teeth of the driving gear.

4. The drive wheel for an automatic timing spark arrester as defined in claim 3 wherein: The contact surface between the transmission boss and the driving gear is an arc surface.

5. The drive wheel for an automatic timing spark arrester as defined in claim 1 wherein: The transmission boss is arranged at one side of the driving gear, and the opposite side of the transmission wheel, where the transmission teeth are arranged, is provided with helical teeth, which are in tangential contact with the two sides of the transmission boss of the driving gear.

6. The drive wheel for an automatic timing spark arrester as defined in claim 1 wherein: The transmission boss is a sector.

7. The drive wheel for an automatic timing spark arrester as defined in claim 1 wherein: The length of the side of the transmission boss close to the transmission wheel body is less than the length of the side away from the transmission wheel body.

8. A drive wheel assembly for an automatic timing spark arrester comprising the drive wheel of any one of claims 1 to 7, characterised in that: The transmission shaft, the bevel gear, the transmission wheel, the spring and the driving gear are coaxially arranged on the transmission shaft in sequence, and the driving gear rotates with the transmission shaft; One side of the bevel gear is in meshing connection with the transmission teeth of the transmission wheel; One side of the transmission wheel, where the transmission boss is arranged, is in meshing connection with the driving gear; The boss fixing member of the transmission wheel is arranged inside the driving gear.

9. The drive wheel assembly for an automatic timing spark arrester of claim 8 wherein: Further comprising a bevel gear seat for fixing the bevel gear, a transmission wheel seat for fixing the transmission wheel and the spring, and a driving gear seat for fixing the driving gear.

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