Double transmission gear structure of cat litter box

Abstract

The utility model discloses a cat litter box double transmission gear structure, the utility model discloses a motor (1) and set up on the motor gear (2) of motor (1) output shaft, two transmission gears (3) of left and right symmetry arrangement, the motor gear (2) is engaged with two transmission gears (3) simultaneously. The utility model discloses through the motor gear (2) simultaneously drive left and right symmetry arrangement's two transmission gears (3), and make two transmission gears (3) common with the gear wheel (5) of the outer wall of drum (4) engagement, realize double gear synchronous drive in 0~90 range, when drum (4) rotates to 90 above, and automatic switching is single gear engagement and continues to drive, thereby realize the turning action of drum (4) more than 90, effectively break through the problem that traditional half gear drive angle is limited.

Description

Technical Field

[0001] This utility model belongs to the field of pet supplies, specifically, it relates to a dual-drive gear structure for a cat litter box. Background Technology

[0002] In the pet supplies industry, litter boxes are an essential product for cat owners. With the popularization of smart home appliances, automated litter boxes are gradually becoming the mainstream product in the market. These devices use a motor-driven roller to automatically rotate, automatically sifting litter and cleaning up waste after the cat has used the litter box, greatly improving the convenience and hygiene of cat ownership. However, the automatic rotation of the roller relies on a gear transmission structure, and the rationality of its design directly affects the realization of the cleaning function and the stable operation of the equipment.

[0003] Most existing automatic litter boxes use single-sided drive or half-gear structure for driving. These structures have two prominent problems: First, the rotation angle is limited. Half-gear drive can only achieve the rotation of the roller within the range of 0° to 90°, making it difficult to complete the tilting action of more than 90°, resulting in incomplete cleaning. Second, the stability is insufficient. Since it only relies on the meshing of a single-sided gear for transmission, and there is an unavoidable gap between the gears, coupled with the slight shaking at the motor output end, it will be amplified into obvious left and right swinging when the roller is stationary or starting, affecting the balance of the device and the user experience.

[0004] In view of this, this utility model is hereby proposed. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a dual-drive gear structure for a cat litter box, which solves the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows:

[0007] A cat litter box with dual transmission gear structure includes: a motor and a motor gear disposed on the output shaft of the motor;

[0008] Two drive gears are arranged symmetrically on the left and right sides, and the motor gear meshes with both drive gears simultaneously.

[0009] A roller and a large gear fixedly connected to the outer wall of the roller, wherein both transmission gears mesh with the large gear;

[0010] When the large gear of the drum rotates within the range of 0°-90°, the two transmission gears mesh simultaneously to drive the drum to rotate; when the drum rotates to more than 90°, one of the transmission gears continues to mesh with the large gear, thereby enabling the drum to rotate more than 90° to complete the cleaning action.

[0011] Optionally, the two transmission gears are symmetrically distributed on both sides of the motor gear to form a symmetrical support structure, which is used to reduce the left and right swaying of the roller in the standby state.

[0012] Optionally, the large gear of the drum has a ring structure, is arranged along the circumference of the drum, and is fixedly connected to the drum.

[0013] Optionally, a meshing switching zone is provided between the transmission gear and the large roller gear at a 90° angle to realize the transition from double gear meshing to single gear meshing.

[0014] Optionally, the tooth surfaces of the motor gear, transmission gear, and large roller gear are modified or chamfered.

[0015] Optionally, the motor gear is made of metal, while the transmission gear and the large roller gear are made of wear-resistant engineering plastic.

[0016] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art. Of course, any product implementing the present invention does not necessarily need to achieve all of the following advantages at the same time:

[0017] This invention provides a dual-drive gear structure for a cat litter box. The motor gears simultaneously drive two symmetrically arranged drive gears, which mesh with a large gear on the outer wall of the roller. The dual gears achieve synchronous drive within the range of 0° to 90°. When the roller rotates to more than 90°, it automatically switches to single-gear engagement to continue driving, thereby enabling the roller to rotate more than 90°. This effectively overcomes the problem of limited angle in traditional half-gear transmission.

[0018] Furthermore, this structure utilizes a symmetrical double-gear meshing method to form bidirectional support during standby and operation, significantly reducing lateral roller sway and improving the overall stability of the transmission system. Combined with a meshing switching zone located at 90°, a smooth transition from double gears to single gears is achieved, avoiding jamming and impact during the switching process. The gear teeth are modified or chamfered to reduce gear meshing noise and improve operational quietness. The transmission system employs a composite design combining metal gears and engineering plastic gears, ensuring both strength and wear resistance while reducing weight and noise, making it suitable for long-term stable operation.

[0019] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0020] The accompanying drawings described below are merely some embodiments. Those skilled in the art can obtain other drawings based on these drawings without any creative effort. In the drawings:

[0021] Figure 1 This is one of the schematic diagrams of a three-dimensional gear structure;

[0022] Figure 2 This is the second schematic diagram of the three-dimensional structure of the gear.

[0023] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings.

[0025] Please see Figure 1-2 As shown, this embodiment provides a dual-drive gear structure for a cat litter box, including a motor 1 and a motor gear 2 disposed on the output shaft of the motor 1;

[0026] Two transmission gears 3 are arranged symmetrically on the left and right sides, and the motor gear 2 meshes with the two transmission gears 3 simultaneously;

[0027] The roller 4 and the large gear 5 fixedly connected to the outer wall of the roller 4, wherein both transmission gears 3 mesh with the large gear 5;

[0028] When the large gear 5 of the roller 4 rotates within the range of 0°-90°, the two transmission gears 3 mesh simultaneously to drive the roller 4 to rotate. When the roller 4 rotates above 90°, one of the transmission gears 3 continues to mesh with the large gear 5, allowing the roller 4 to rotate more than 90° to complete the cleaning action. By setting a motor gear 2 on the output shaft of the motor 1 and using two symmetrically arranged transmission gears 3 to mesh with the large gear 5 on the outer wall of the roller 4, the roller 4 achieves dual-gear synchronous drive within the range of 0° to 90°, resulting in smoother rotation. When the rotation angle exceeds 90°, it automatically switches to single-gear drive, continuously providing rotational torque. This overcomes the limitation of traditional half-gear structures that cannot rotate more than 90°, ensuring that the litter box can smoothly complete the entire emptying and cleaning process, improving the reliability and integrity of the automatic cleaning function.

[0029] In this embodiment, the two transmission gears 3 are symmetrically distributed on both sides of the motor gear 2, forming a symmetrical support structure to reduce the left-right swaying of the roller 4 in the standby state. By symmetrically distributing the two transmission gears 3 on both sides of the motor gear 2 to form a stable symmetrical support structure, the roller 4 is subjected to more even force, effectively reducing the left-right swaying caused by unilateral drive or gear backlash. This design significantly improves structural stability when the litter box is in standby mode, avoiding discomfort caused by the roller 4 shaking when the cat uses the litter box, while reducing the unbalanced load and wear on the gear meshing parts, extending the overall service life of the device.

[0030] In this embodiment, the large gear 5 of the roller 4 is a ring structure, arranged along the circumference of the roller 4 and fixedly connected to the roller 4. By designing the large gear 5 of the roller 4 as a ring structure and arranging it evenly along the circumference of the roller 4, stable full-circumferential drive can be achieved when the roller 4 rotates, making the distribution of rotational torque more balanced. The ring arrangement not only increases the meshing area and force uniformity of the gears, but also reduces the local gear load, improves transmission efficiency and running smoothness, and helps stabilize the posture of the roller 4 during rotation, preventing eccentric swaying.

[0031] In this embodiment, a meshing switching zone is provided at a 90° angle between the transmission gear 3 and the large gear 5 of the drum 4 to achieve the transition from double-gear meshing to single-gear meshing. By setting a meshing switching zone at a 90° angle between the transmission gear 3 and the large gear 5 of the drum 4, a smooth transition from double-gear meshing to single-gear meshing can be achieved when the drum 4 rotates to the critical angle, avoiding the jamming, impact, and noise problems caused by sudden disengagement or re-meshing of gears in traditional structures. The design of this switching zone ensures the continuity and stability of the transmission system throughout the entire rotation cycle, allowing the drum 4 to smoothly traverse the critical angle range and successfully complete the cleaning action.

[0032] In this embodiment, the tooth surfaces of the motor gear 2, transmission gear 3, and roller 4 large gear 5 are modified or chamfered. By modifying or chamfering the tooth surfaces of the motor gear 2, transmission gear 3, and roller 4 large gear 5, the engagement and disengagement states during gear meshing can be effectively improved, reducing tooth surface impact and vibration noise in the switching zone. The modified structure can also disperse meshing stress, reduce tooth tip biting and tooth root stress concentration problems, thereby extending the service life of the gears and improving the overall quietness and stability of the litter box operation.

[0033] In this embodiment, the motor gear 2 is made of metal, while the transmission gear 3 and the large gear 5 of the roller 4 are made of wear-resistant engineering plastic. By using a composite structure design where the motor gear 2 is made of metal and the transmission gear 3 and the large gear 5 of the roller 4 are made of wear-resistant engineering plastic, both strength and lightweight requirements can be met.

[0034] This utility model is not limited to the above-described embodiments. Anyone should know that structural changes made under the guidance of this utility model, and any technical solutions that are the same as or similar to this utility model, fall within the protection scope of this utility model. Technical aspects, shapes, and structures not described in detail in this utility model are all publicly known technologies.

Claims

1. A dual-drive gear structure for a cat litter box, characterized in that, include: The motor (1) and the motor gear (2) disposed on the output shaft of the motor (1); Two transmission gears (3) are arranged symmetrically on the left and right sides, and the motor gear (2) meshes with the two transmission gears (3) at the same time; The roller (4) and the large gear (5) fixedly connected to the outer wall of the roller (4) are connected to the roller (4). Both transmission gears (3) mesh with the large gear (5). When the large gear (5) of the drum (4) rotates within the range of 0°-90°, the two transmission gears (3) mesh simultaneously to drive the drum (4) to rotate; when the drum (4) rotates to more than 90°, one of the transmission gears (3) continues to mesh with the large gear (5), thereby enabling the drum (4) to rotate more than 90° to complete the cleaning action.

2. The cat litter box dual-drive gear structure according to claim 1, characterized in that, The two transmission gears (3) are symmetrically distributed on both sides of the motor gear (2) to form a symmetrical support structure, which is used to reduce the left and right swaying of the roller (4) in the standby state.

3. The cat litter box dual-drive gear structure according to claim 1, characterized in that, The large gear (5) of the roller (4) is a ring structure, arranged along the circumference of the roller (4) and fixedly connected to the roller (4).

4. The dual-drive gear structure for a cat litter box according to claim 1, characterized in that, The transmission gear (3) and the large gear (5) of the roller (4) are provided with a meshing switching zone at a 90° angle to realize the transition from double gear meshing to single gear meshing.

5. The dual-drive gear structure for a cat litter box according to claim 1, characterized in that, The tooth surfaces of the motor gear (2), transmission gear (3), and roller (4) large gear (5) adopt a modified or chamfered structure.

6. The dual-drive gear structure for a cat litter box according to claim 1, characterized in that, The motor gear (2) is made of metal, while the transmission gear (3) and the large gear (5) of the roller (4) are made of wear-resistant engineering plastic.

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