Anti-overloading assembly of speed reducer

Abstract

The utility model discloses an anti-overload assembly of a speed reducer, which comprises an anti-explosion large tooth and an anti-explosion small tooth, one end of the anti-explosion small tooth is provided with a mounting end, the mounting end is provided with a limiting connecting piece, and one side of the mounting end is provided with a first transmission tooth; the outer side of the anti-explosion large tooth is provided with a second transmission tooth, an inner cavity of the anti-explosion large tooth is further provided with a limiting table, the installation end is arranged in the inner cavity of the anti-explosion large tooth, and the limiting table is matched with the limiting connecting piece. And the mounting end is arranged in the inner cavity of the anti-explosion large tooth, and the limiting table is matched with the limiting connecting piece, so that when the driving motor is overloaded, the mounting end and the limiting connecting piece can slip to prevent the driving motor from being damaged, and the use cost is reduced.

Description

Technical Field

[0001] The utility model relates to the field of smart home, and particularly relates to an overload prevention component for a speed reduction device. Background Art

[0002] With the continuous development of society, smart devices are becoming more and more popular in daily life, such as smart toilets, smart dishwashers, smart sink, washing machines, etc., and the degree of automation is also getting higher and higher; among them, the smart toilets, smart dishwashers and smart sink with automatic flip function are all an embodiment of the automatic flip function. In the prior art, there are also drive flip buffers, which mainly include a drive motor, an elastic member and a limit table. The drive motor connected to the cover rotates to squeeze the elastic member to generate sufficient frictional force to buffer the toilet cover; there is also an electric drive flip buffer which mainly includes a flip gearbox, which generally drives the motor to operate through a control board to realize the automatic flipping of the cover, and cooperates with a potentiometer assembly for induction detection. However, if the potentiometer assembly fails or does not work, the toilet cover fixed to the output shaft cannot flip after reaching the position, and the continuous output of the drive motor will cause the drive motor to be short-circuited and damaged, affecting the user experience and use cost. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide an overload prevention component for a speed reduction device that can prevent the drive motor from being overloaded and reduce the use cost.

[0004] In order to solve the above technical problems, the technical solution of the utility model is as follows:

[0005] An overload prevention component for a speed reduction device includes an explosion-proof large gear and an explosion-proof small gear. One end of the explosion-proof small gear is provided with an installation end, and a limit connecting piece is arranged on the installation end. A first transmission tooth is arranged on one side of the installation end; a second transmission tooth is arranged on the outer side of the explosion-proof large gear, and a limit table is further arranged in the inner cavity of the explosion-proof large gear. The installation end is arranged in the inner cavity of the explosion-proof large gear, and the limit table is adapted to the limit connecting piece.

[0006] Preferably, the limit table is in an inverted "L" shape, and one side of the limit table has an arc chamfer.

[0007] Preferably, one side of the limit table is an inclined table, and the angle of the inclined table is 105° - 120°.

[0008] Preferably, the two ends of the limit connecting piece are provided with limit posts, and the limit posts at both ends are respectively arranged on both sides of the limit table, and the length of the limit posts is not less than 1.5 mm.

[0009] Preferably, the limit connecting piece adopts a limit spring or several limit snap rings.

[0010] Preferably, the second transmission tooth is a straight tooth.

[0011] Preferably, the limiting connecting piece is in interference fit with the installation end.

[0012] Preferably, the tooth ratio of the second transmission gear to the first transmission gear is 3:1.

[0013] With the above technical solution, since the limiting connecting piece is provided on the installation end, and the inner cavity of the explosion-proof large gear is also provided with a limiting platform, the installation end is arranged in the inner cavity of the explosion-proof large gear, and the limiting platform is adapted to the limiting connecting piece, when the driving motor is overloaded, the installation end and the limiting connecting piece can slip to avoid damage to the driving motor and reduce the use cost. Description of the Drawings

[0014] Figure 1 is a structural schematic diagram of the present utility model Figure 1 ;

[0015] Figure 2 is a structural schematic diagram of the present utility model Figure 2 ;

[0016] Figure 3 is the front view of the present utility model;

[0017] Figure 4 is Figure 3 the cross-sectional view taken along line A-A in

[0018] Figure 5 is the structural schematic diagram of the explosion-proof small gear in the present utility model;

[0019] Figure 6 is the structural schematic diagram of the explosion-proof large gear in the present utility model Figure 1 ;

[0020] Figure 7 is the schematic diagram of the limiting connecting piece in the present utility model Figure 1 ;

[0021] Figure 8 is the structural schematic diagram of the explosion-proof large gear in the middle of the present utility model Figure 2 ;

[0022] Figure 9 is the schematic diagram of the limiting connecting piece in the present utility model Figure 2 .

[0023] In the figure, 1-explosion-proof large gear, 2-explosion-proof small gear, 3-installation end, 4-limiting connecting piece, 5-first transmission gear, 6-second transmission gear, 7-limiting platform, 8-arc chamfer, 9-inclined platform, 10-limiting column. Detailed Embodiment

[0024] The following further describes the specific embodiments of the present utility model in conjunction with the accompanying drawings. It should be noted here that the description of these embodiments is used to help understand the present utility model, but does not constitute a limitation on the present utility model. In addition, the technical features involved in the various embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other. Specific Embodiment 1

[0026] As Figure 1-7 shown, an overload prevention assembly for a speed reduction device includes an explosion-proof large gear 1 and an explosion-proof small gear 2. One end of the explosion-proof small gear 2 is provided with a mounting end 3. A limit connecting piece 4 is provided on the mounting end 3, and a first transmission gear 5 is provided on one side of the mounting end 3; a second transmission gear 6 is provided on the outer side of the explosion-proof large gear 1, and a limit platform 7 is further provided in the inner cavity of the explosion-proof large gear 1. The mounting end 3 is arranged in the inner cavity of the explosion-proof large gear 1, and the limit platform 7 is adapted to the limit connecting piece 4, so that the driving motor can slip when overloaded to avoid damage to the driving motor and reduce the use cost.

[0027] In addition, the limit platform 7 is in an inverted "L" shape, and one side of the limit platform 7 has an arc chamfer 8.

[0028] Furthermore, one side of the limit platform 7 is an inclined platform 9, and the angle of the inclined platform 9 is 105° - 120°. In this embodiment, the angle of the inclined platform 9 is 105°, which improves the connection strength and stability of the limit.

[0029] In addition, the limit connecting piece 4 is provided with limit posts 10 at both ends. The limit posts 10 at both ends are respectively arranged on both sides of the limit platform 7, and the length of the limit posts 10 is not less than 1.5 mm. In this embodiment, the length of the limit posts 10 is 1.5 mm. When the driving motor is overloaded, under the action of the driving motor, the limit posts 10 are blocked by the limit platform 7, so that the connection strength between the limit connecting piece 4 and the mounting end 3 becomes weak, and the limit connecting piece 4 slips with the mounting end 3 to achieve the overload prevention function.

[0030] Furthermore, the limit connecting piece 4 is made of a limit spring or several limit snap rings. According to different connection strengths, one, two or three limit snap rings are installed. In this embodiment, three limit snap rings are used to ensure the stability of the transmission.

[0031] In addition, the second transmission gear 6 is a straight gear, with a stable transmission torque.

[0032] Furthermore, the limit connecting piece 4 and the mounting end 3 are in interference fit. In the normal state, the limit connecting piece 4 and the mounting end 3 transmit torque. When the driving motor is overloaded, the limit connecting piece 4 and the mounting end 3 achieve overload prevention.

[0033] In addition, the tooth ratio of the second transmission gear 6 to the first transmission gear 5 is 3:1. Specific Embodiment 2

[0035] As Figure 8-9 shown, the limit connecting member 4 uses a limit spring, the limit platform 7 is trapezoidal, and the number of turns of the spring is set according to the requirement of connection strength. In this embodiment, the number of turns of the spring is not less than 2 turns, and in this embodiment, 5 turns are adopted.

[0036] The above has described in detail the embodiments of the present invention in conjunction with the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, without departing from the principle and spirit of the present invention, various changes, modifications, substitutions, and variations made to these embodiments still fall within the protection scope of the present invention.

Claims

1. An overload prevention component for a speed reduction device, characterized in that: It includes an anti-explosion large tooth and an anti-explosion small tooth. One end of the anti-explosion small tooth is provided with an installation end. A limit connecting piece is provided on the installation end, and a first transmission tooth is provided on one side of the installation end. A second transmission tooth is provided on the outer side of the anti-explosion large tooth, and a limit platform is further provided in the inner cavity of the anti-explosion large tooth. The installation end is arranged in the inner cavity of the anti-explosion large tooth, and the limit platform is adapted to the limit connecting piece.

2. The overload prevention component of the speed reduction device according to claim 1, characterized in that: The limit platform is in an inverted "L" shape, and one side of the limit platform has an arc chamfer.

3. The anti-overload component of the speed reduction device according to claim 2, characterized in that: One side of the limit platform is an inclined platform, and the angle of the inclined platform is 105°-120°.

4. The overload protection component for the speed reduction device according to claim 1, characterized in that: Both ends of the limit connecting piece are provided with limit posts. The limit posts at both ends are respectively arranged on both sides of the limit platform, and the length of the limit posts is not less than 1.5 mm.

5. The anti-overload component of the speed reduction device according to claim 4, characterized in that: The limit connecting piece adopts a limit spring or a plurality of limit snap rings.

6. The overload prevention component of the speed reduction device according to claim 1, characterized in that: The second transmission tooth is a straight tooth.

7. The overload prevention component of the speed reduction device according to claim 5, characterized in that: The limit connecting piece is in interference fit with the installation end.

8. The overload prevention component of the speed reduction device according to claim 6, characterized in that: The tooth ratio of the second transmission tooth to the first transmission tooth is 3:1.

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