Limited angle barrel type damper for electric cooker
By adopting a miniaturized damper design in a rice cooker and using a gradient groove between the rotating shaft and the outer shell to control the flow rate of the damping grease, the problems of high cost and poor design flexibility caused by the large size of existing dampers are solved, thus improving both safety and flexibility.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI JIEBANG PLASTIC HARDWARE PROD CO LTD
- Filing Date
- 2025-06-05
- Publication Date
- 2026-04-28
AI Technical Summary
The existing finite angle cylinder damper in rice cookers is large in size, resulting in high production costs and limiting the flexibility of the rice cooker's appearance and internal structure design.
A damper comprising a housing, a rotating shaft, and a gradient groove was designed. The flow rate of the damping grease is controlled by the relative motion between the rotating shaft and the housing, thereby achieving a buffering effect in which the torque increases or decreases with the change of angle.
The miniaturized design reduces production costs, improves the flexibility of the rice cooker's appearance and structural design, avoids vibrations caused by the lid rebounding, and enhances safety during use.
Smart Images
Figure CN224174477U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of household kitchen appliances, and in particular to a limited angle tube damper for rice cookers. Background Technology
[0002] The finite angle cylinder damper used in rice cookers effectively suppresses vibrations and shaking that may occur during operation, especially during heating and stirring. This ensures stable operation and reduces wear and tear on components and noise caused by vibration. It extends the lifespan of the rice cooker and lowers maintenance costs. Stable operation also improves cooking safety, reducing the occurrence of accidents such as liquid spills due to shaking, providing users with a more reliable and safer experience.
[0003] The working principle of a finned-angle cylinder damper in a rice cooker is to utilize the resistance generated by the flow of damping medium within the cylinder. When components of the rice cooker are displaced due to vibration or movement, the outer shell rotates relative to the rotating shaft, causing the damping medium to flow through small holes or gaps, thereby converting mechanical energy into heat energy, suppressing vibration, and buffering impacts. Its main application is inside the rice cooker, used to mitigate impacts when the lid is opened or buttons are pressed, and to prevent components from shaking during transportation, thus protecting the rice cooker's structure and performance.
[0004] In the prior art, the finite angle tube damper of some rice cookers has a large size, which puts strict requirements on the size of the rice cooker. The larger size may require more complex molds and manufacturing processes, which increases production costs and reduces the flexibility of the appearance and internal structure design of the rice cooker. Therefore, a finite angle tube damper for rice cookers is proposed to solve the above problems. Utility Model Content
[0005] To overcome the above shortcomings, this utility model provides a finite angle tube damper for rice cookers, aiming to improve the problem that some existing finite angle tube dampers for rice cookers have a large size, which imposes strict requirements on the size of the rice cooker. The larger size may require more complex molds and production processes, increasing production costs and reducing the flexibility of the rice cooker's appearance and internal structure design.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A finite angle tube damper for a rice cooker includes a housing, an mounting post installed on the inner wall of the housing, a rotating shaft rotatably connected to the outside of the mounting post, a gradually changing groove provided on the outer wall of the rotating shaft, a boss provided on the outer wall of the rotating shaft, a mounting platform fixedly connected to the top of the boss, a large sealing ring fixedly connected to the top of the mounting platform, and a cap fixedly connected to the inner wall of the large sealing ring.
[0008] As a further description of the above technical solution:
[0009] The outer walls of the two protrusions are slidably connected to the inner wall of the housing, and the outer wall of the gradient groove is slidably connected to the inner wall of the mounting post.
[0010] As a further description of the above technical solution:
[0011] The inner wall of the outer casing is provided with two protrusions, and the outer wall of the rotating shaft is provided with a second cavity;
[0012] As a further description of the above technical solution:
[0013] The outer wall of the rotating shaft is provided with a first cavity, and a small sealing ring is fixedly connected to the inner wall of the rotating shaft;
[0014] As a further description of the above technical solution:
[0015] The outer wall of the gradient groove is slidably connected to the inner wall of the second cavity, and the outer wall of the other gradient groove is slidably connected to the inner wall of the first cavity.
[0016] As a further description of the above technical solution:
[0017] The inner wall of the gradient groove is slidably connected to the outer wall of the mounting post, and the outer wall of the protrusion can contact the outer wall of the boss.
[0018] This utility model has the following beneficial effects:
[0019] This invention features a small size, minimal requirements for the rice cooker's appearance, facilitating its design and structural optimization, low processing and manufacturing costs, and easy assembly. The limited opening angle of the rice cooker lid prevents excessive spring force from causing the lid to bounce and vibrate, potentially leading to burns or splashes. When the outer shell moves relative to the rotating shaft, the limiting protrusion at the rotating shaft compresses the damping grease, causing it to flow between the first and second chambers. The gap between the gradually changing groove on the outer wall of the rotating shaft and the inner wall of the outer cylinder changes with the angle, thus controlling the grease flow rate. This allows the torque to increase or decrease with the angle, achieving a buffering effect. Attached Figure Description
[0020] Fig. 1 This is a three-dimensional schematic diagram of a finite angle tube damper for a rice cooker proposed in this utility model.
[0021] Fig. 2 This is a schematic diagram of the boss structure of a finite angle cylinder damper for a rice cooker proposed in this utility model.
[0022] Fig. 3 This is a schematic diagram of the rotating shaft of a finite angle cylinder damper for a rice cooker proposed in this utility model.
[0023] Legend:
[0024] 1. Cover; 2. Large sealing ring; 3. Rotating shaft; 4. Boss; 5. Small sealing ring; 6. Protrusion; 7. Mounting post; 8. Mounting platform; 9. Outer shell; 10. Gradient groove; 11. First cavity; 12. Second cavity. Detailed Implementation
[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0026] Reference Figs. 1-3 This utility model provides an embodiment of a limited-angle cylinder damper for a rice cooker, including a housing 9. An mounting post 7 is installed on the inner wall of the housing 9, facilitating the installation between a rotating shaft 3 and the housing 9. The rotating shaft 3 is rotatably connected to the outside of the mounting post 7. A gradient groove 10 is provided on the outer wall of the rotating shaft 3. When the housing 9 and the rotating shaft 3 move relative to each other, a limiting boss 4 at the rotating shaft 3 compresses damping grease, causing the damping grease to flow between the first cavity 11 and the second cavity 12. The gap between the gradient groove 10 on the outer wall of the rotating shaft 3 and the inner wall of the outer cylinder of the housing 9 changes with the angle, thereby controlling the flow rate of the damping grease and causing the torque to increase or decrease with the angle, achieving a buffering effect.
[0027] The outer wall of the rotating shaft 3 is provided with a boss 4. The inner wall of the outer shell 9 and the outer wall of the rotating shaft 3 are divided into a first cavity 11 and a second cavity 12 by the boss 4, so that the damping grease is squeezed by the limiting boss 4 at the rotating shaft 3. The top of the boss 4 is fixedly connected to the mounting platform 8, which is used to realize the installation between the cover 1 and the rotating shaft 3. The top of the mounting platform 8 is fixedly connected to the large sealing ring 2. The inner wall of the cover 1 and the outer wall of the rotating shaft 3 are interference-fitted by the large sealing ring 2. The inner wall of the large sealing ring 2 is fixedly connected to the cover 1. The outer walls of the two bosses 4 are slidably connected to the inner wall of the outer shell 9, realizing the rotatable connection of the rotating shaft 3 in the outer shell 9. The boss 4 also serves to divide the cavity. The outer wall of the gradient groove 10 is slidably connected to the inner wall of the mounting column 7. The torque is generated by the flow between the first cavity 11 and the second cavity 12 through the gradient groove 10 at the outer wall of the rotating shaft 3.
[0028] Reference Figs. 1-3The inner wall of the cover 1 is provided with two protrusions 6. When the cover 1 is installed and fitted with the rotating shaft 3, the outer wall of the protrusion 6 can contact the outer wall of the boss 4 to achieve a certain positional limitation. The inner wall of the mounting column 7 is provided with a second cavity 12. The inner wall of the outer shell 9 and the outer wall of the rotating shaft 3 are divided into a first cavity 11 and a second cavity 12 by the boss 4, so that the damping grease is squeezed by the limiting boss 4 at the rotating shaft 3 and flows between the first cavity 11 and the second cavity 12. The inner wall of the mounting column 7 is provided with a first cavity 11. The inner wall of the outer shell 9 and the outer wall of the rotating shaft 3 are divided into a first cavity 11 and a second cavity 12 by the boss 4, so that the damping grease is squeezed by the limiting boss 4 at the rotating shaft 3 and flows between the first cavity 11 and the second cavity 12. The inner wall of the rotating shaft 3 is fixedly connected with a small sealing ring 5. The inner wall of the rotating shaft 3 and the outer wall of the inner cylinder of the outer shell 9 are interference-fitted by the small sealing ring 5 to achieve a sealing effect on the damping grease in the first damping cavity and the second damping cavity.
[0029] The outer wall of the gradient groove 10 is slidably connected to the inner wall of the second cavity 12. The gradient groove 10 at the outer wall of the rotating shaft 3 flows between the first cavity 11 and the second cavity 12, generating torque. The outer wall of another gradient groove 10 is slidably connected to the inner wall of the first cavity 11. The gradient groove 10 at the outer wall of the rotating shaft 3 flows between the first cavity 11 and the second cavity 12, generating torque. The inner wall of the gradient groove 10 is slidably connected to the outer wall of the mounting post 7. The gradient groove 10 at the outer wall of the rotating shaft 3 flows between the first cavity 11 and the second cavity 12, generating torque. The outer wall of the protrusion 6 can contact the outer wall of the boss 4, achieving a certain positional limitation, and cooperating with the installation of the rotating shaft 3 and the cover 1.
[0030] Working principle: The inner wall of the outer shell 9 and the outer wall of the rotating shaft 3 are divided into a first cavity 11 and a second cavity 12 by a boss 4, so that the damping grease is squeezed by the limiting boss 4 at the rotating shaft 3. The mounting platform 8 is used to realize the installation between the cover 1 and the rotating shaft 3. The grease flows between the first cavity 11 and the second cavity 12 through the gradient groove 10 at the outer wall of the rotating shaft 3, generating torque. The inner wall of the cover 1 and the outer wall of the rotating shaft 3 are interference-fitted by a large sealing ring 2. The mounting post 7 facilitates the installation between the rotating shaft 3 and the outer shell 9. The inner wall of the rotating shaft 3 and the outer wall of the inner cylinder of the outer shell 9 are interference-fitted by a small sealing ring 5, realizing the first damping cavity and The sealing effect of the damping grease in the second damping cavity is achieved by ultrasonic welding between the inner wall of the outer cylinder of the outer shell 9 and the outer wall of the cover 1, thus assembling the outer shell 9, the rotating shaft 3 and the cover 1. The outer wall of the rotating shaft 3 is provided with a gradient groove 10. When the outer shell 9 and the rotating shaft 3 move relative to each other, the limiting boss 4 at the rotating shaft 3 squeezes the damping grease, causing the damping grease to flow between the first cavity 11 and the second cavity 12. The gap between the gradient groove 10 at the outer wall of the rotating shaft 3 and the inner wall of the outer cylinder of the outer shell 9 changes with the angle, thereby controlling the flow rate of the damping grease, so that the torque increases or decreases with the angle, thus achieving a buffering effect.
[0031] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A finite angle cylinder damper for a rice cooker, comprising a housing (9), characterized in that: The inner wall of the outer shell (9) is equipped with a mounting post (7), and the outer side of the mounting post (7) is rotatably connected to a rotating shaft (3). The outer wall of the rotating shaft (3) is provided with a gradient groove (10), and the outer wall of the rotating shaft (3) is provided with a boss (4). The top of the boss (4) is fixedly connected to a mounting platform (8), and the top of the mounting platform (8) is fixedly connected to a large sealing ring (2). The inner wall of the large sealing ring (2) is fixedly connected to a cap (1).
2. The finite angle tube damper for a rice cooker according to claim 1, characterized in that: The outer walls of the two protrusions (4) are slidably connected to the inner wall of the outer shell (9), and the outer wall of the gradient groove (10) is slidably connected to the inner wall of the mounting post (7).
3. A finite angle tube damper for a rice cooker according to claim 1, characterized in that: The inner wall of the outer shell (9) is provided with two protrusions (6), and the outer wall of the rotating shaft (3) is provided with a second cavity (12).
4. A finite angle tube damper for a rice cooker according to claim 3, characterized in that: The outer wall of the rotating shaft (3) is provided with a first cavity (11), and the inner wall of the rotating shaft (3) is fixedly connected with a small sealing ring (5).
5. A finite angle cylinder damper for a rice cooker according to claim 4, characterized in that: The outer wall of the gradient groove (10) is slidably connected to the inner wall of the second cavity (12), and the outer wall of the other gradient groove (10) is slidably connected to the inner wall of the first cavity (11).
6. A finite angle cylinder damper for a rice cooker according to claim 3, characterized in that: The inner wall of the gradient groove (10) is slidably connected to the outer wall of the mounting post (7), and the outer wall of the protrusion (6) is in contact with the outer wall of the boss (4).