A rice cooker upper cover hinge structure convenient to install
By using an easy-to-install hinge structure for the rice cooker lid, and employing semi-circular interlocking positioning and an automatic lubrication component, the problems of cumbersome disassembly and frictional wear in existing rice cooker hinge structures are solved, enabling rapid installation and extending service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SUZHOU WENZHI PRECISION HARDWARE TECH CO LTD
- Filing Date
- 2025-09-04
- Publication Date
- 2026-07-24
AI Technical Summary
The existing hinge structure of the rice cooker lid is cumbersome, time-consuming and costly to disassemble and maintain, and is prone to accelerated aging due to friction wear over long-term use.
The rice cooker lid features an easy-to-install hinge structure. The C-shaped structure formed by intersecting semicircular rings enables quick positioning and fixation. Combined with an automatic lubrication component, it simplifies the installation and maintenance process and reduces frictional wear.
It simplifies the installation process, reduces maintenance difficulty and cost, and extends the service life of the hinge structure.
Smart Images
Figure CN224549892U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of electric rice cooker technology, and more specifically, it relates to an easy-to-install hinge structure for the lid of an electric rice cooker. Background Technology
[0002] As a common kitchen appliance, the opening and closing function of a rice cooker relies on a stable and flexible connection between the lid and the pot body, and the hinge structure is the key component for achieving this connection. Existing rice cooker lid hinge structures typically use multiple sets of bolts to fix the hinge shaft, hinge seat, lid, and pot body together.
[0003] Existing application number CN201320514536.6 discloses a hinge mounting structure for a rice cooker and a rice cooker. The hinge mounting structure includes a hinge mounting portion and a hinge reinforcing component disposed on a support ring of the rice cooker. The hinge reinforcing component includes a first reinforcing plate, which has a support lug portion, a cover plate portion, and an insert plate portion. The support lug portion is provided with a hinge mounting hole. The cover plate portion is fixed to the hinge mounting portion. The insert plate portion passes through the insert hole on the hinge mounting portion and is fixed to the hinge mounting portion. Because of this structure, the hinge reinforcing component and the support ring of the rice cooker provided by this utility model are firmly and reliably combined, resulting in good stability. This allows the rice cooker to maintain high stability even under high pressure and effectively reduces deformation during long-term opening and closing experiments.
[0004] Based on the above, the existing hinge structure of rice cookers requires the removal of the lid for repair due to malfunction, or the hinge components need maintenance or reassembly. This necessitates the disassembly of multiple sets of fixing bolts one by one, making the overall operation cumbersome and time-consuming. If the hinge itself is damaged, such as by shaft deformation or seat wear, requiring separate repair or replacement, all connecting bolts must be completely removed to thoroughly separate the hinge from the lid and pot body before repair work can begin, further increasing maintenance difficulty and operating costs. Furthermore, the core mating parts of the hinge are mostly in rigid contact, and long-term opening and closing can easily cause wear due to friction, accelerating aging and damage. Utility Model Content
[0005] To address the aforementioned technical problems, this utility model provides an easy-to-install hinge structure for a rice cooker lid. This solves the problem of existing rice cooker lid hinge structures where, when the rice cooker needs to be disassembled for repair due to a malfunction, or when the hinge components require maintenance or reassembly, multiple sets of fixing bolts must be disassembled one by one, making the entire operation cumbersome and time-consuming. If the hinge itself is damaged, such as by shaft deformation or seat wear, requiring separate repair or replacement, all connecting bolts must still be completely disassembled to thoroughly separate the hinge from the lid and the pot body before repair work can begin, further increasing maintenance difficulty and operating costs. Furthermore, the core mating parts of the hinge are mostly in rigid contact, and long-term opening and closing can easily cause wear due to friction, accelerating aging and damage.
[0006] The purpose and function of this utility model, which provides an easy-to-install hinge structure for the lid of a rice cooker, are achieved through the following specific technical means: A hinge structure for an easy-to-install rice cooker lid includes an upper lid connector, a hinge shaft, a lower lid connector, a connecting cover, a fixing screw, a bushing, an oil reservoir, an installation component, and a maintenance component. The hinge shaft is fixedly installed inside the upper lid connector; the lower lid connector is rotatably connected to the outside of the hinge shaft; the connecting cover is snapped onto the front side of the lower lid connector; the fixing screw is threaded inside the lower lid connector; two sets of bushings are provided, each set being fixedly installed inside the lower lid connector and the connecting cover, respectively, and together forming a cylindrical structure with both ends open, the inner diameter of which matches the outer diameter of the hinge shaft; the oil reservoir is fixedly installed inside the lower lid connector; the installation component is located inside the lower lid connector; and the maintenance component is located inside the lower lid connector.
[0007] Furthermore, the mounting assembly includes: a first semicircular ring and a second semicircular ring. The first semicircular ring is provided in two sets, and the two sets of the first semicircular ring are disposed inside the two sets of bushings. The two sets of the first semicircular ring are respectively fixedly installed inside the lower cover connector and the connecting cover. The second semicircular ring is provided in two sets, and the two sets of the second semicircular ring are respectively fixedly connected to the inner side of the two sets of the first semicircular ring. The circumferential positions of the second semicircular ring and the corresponding first semicircular ring are staggered, and the two together enclose a ring structure with a C-shaped cross section.
[0008] Furthermore, the maintenance component includes a slide groove and a paddle, wherein the slide groove is formed inside the bushing; the paddle is fixedly installed on the outside of the hinge shaft and is slidably connected inside the slide groove.
[0009] Furthermore, the maintenance component also includes: a drive block, a drive rack, and a return spring. The drive block is vertically slidably connected to the bottom of the slide groove; the drive rack is fixedly connected to the end of the drive block and vertically slidably connected inside the oil tank; the end of the return spring is fixedly installed inside the oil tank, and the top of the return spring is fixedly installed at the end of the drive rack.
[0010] Furthermore, the maintenance component also includes: a drive shaft, a threaded rod, and a one-way limiting mechanism. The drive shaft is rotatably connected inside the oil tank; the threaded rod is rotatably connected inside the oil tank; and the one-way limiting mechanism is installed at the midpoint between the drive shaft and the threaded rod.
[0011] Furthermore, the maintenance assembly also includes: a driven gear, a piston, and an oil supply pipe. The driven gear is coaxially fixedly mounted on the outside of the drive shaft, and the driven gear meshes with the drive rack. The piston is slidably connected inside the oil tank, and the piston is threadedly connected to the outside of the threaded rod. One end of the oil supply pipe is fixedly connected to the outside of the oil tank, and the other two ends of the oil supply pipe are fixedly connected to the inside of two sets of bushings.
[0012] Compared with the prior art, the present invention has the following beneficial effects: First, this utility model has an installation component. The C-shaped structure formed by the interlacing of two sets of semi-circular rings allows the hinge shaft to be quickly snapped into the bushing for initial positioning without the need for repeated alignment of bolt holes. With the fastening of the connecting cover and fixing screws, the two sets of bushings can be spliced into a stable cylindrical structure, which simplifies the installation steps, shortens the assembly time, avoids the cumbersome operation of traditional multi-bolt fixing, and greatly improves the installation efficiency.
[0013] Secondly, this utility model has a maintenance component. The opening and closing of the upper cover drives the trigger drive component to move together. The ratchet and pawl one-way limiting mechanism ensures that the threaded rod rotates in one direction, pushing the piston to accurately deliver the lubricating oil in the oil tank to the hinge gap through the oil delivery pipe, thus achieving automatic lubrication. Moreover, the connecting cover can be separated by simply removing the fixing screws, which is convenient for inspection or replenishing lubricating oil. There is no need to disassemble the whole body, which reduces the difficulty and cost of maintenance.
[0014] This invention has the advantages of quick installation, easy maintenance, and lubrication. It solves the problems of cumbersome installation and inconvenient maintenance of traditional hinges, and reduces rigid contact friction loss through automatic lubrication, effectively extending the service life of the hinge structure, thus balancing convenience and durability. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the main structure of this utility model.
[0016] Figure 2 This is a schematic diagram of the lower cover connector structure of this utility model.
[0017] Figure 3 This is a schematic diagram of the hinge shaft structure of this utility model.
[0018] Figure 4 This is a schematic diagram of the sliding groove structure of this utility model.
[0019] Figure 5 This is a schematic diagram of the paddle structure of this utility model.
[0020] Figure 6 This is a schematic diagram of the connecting cover structure of this utility model.
[0021] Figure 7 This is a schematic diagram of the internal structure of the oil tank of this utility model.
[0022] In the diagram, the correspondence between component names and drawing numbers is as follows: 1. Upper cover connector; 2. Hinge shaft; 201. Paddle; 3. Lower cover connector; 4. Connecting cover; 5. Fixing screw; 6. Bushing; 601. First semi-circular ring; 602. Second semi-circular ring; 603. Slide groove; 7. Oil tank; 701. Drive block; 702. Drive rack; 7021. Return spring; 703. Drive shaft; 704. Threaded rod; 705. One-way limit mechanism; 706. Driven gear; 707. Piston; 708. Oil supply pipe. Detailed Implementation
[0023] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model. Example 1
[0024] As attached Figure 1 To be continued Figure 7 As shown: This utility model provides an easy-to-install hinge structure for the top cover of a rice cooker, including an upper cover connector 1, a hinge shaft 2, a lower cover connector 3, a connecting cover 4, a fixing screw 5, a bushing 6, an oil tank 7, and an installation assembly. The hinge shaft 2 is fixedly installed inside the upper cover connector 1; the lower cover connector 3 is rotatably connected to the outside of the hinge shaft 2; the connecting cover 4 is snapped onto the front side of the lower cover connector 3; the fixing screw 5 is threadedly connected inside the lower cover connector 3; two sets of bushings 6 are provided, and the two sets of bushings 6 are respectively fixedly installed inside the lower cover connector 3 and the connecting cover 4, and after splicing, they together form a cylindrical structure that is open at both ends, and the inner diameter of the cylindrical structure is adapted to the outer diameter of the hinge shaft 2; the oil tank 7 is fixedly installed inside the lower cover connector 3; and the installation assembly is located inside the lower cover connector 3.
[0025] The mounting components include: a first semicircular ring 601 and a second semicircular ring 602. Two sets of the first semicircular ring 601 are provided, and the two sets of the first semicircular ring 601 are located inside the two sets of bushings 6. The two sets of the first semicircular ring 601 are respectively fixedly installed inside the lower cover connector 3 and the connecting cover 4. Two sets of the second semicircular ring 602 are provided, and the two sets of the second semicircular ring 602 are respectively fixedly connected to the inner side of the two sets of the first semicircular ring 601. The circumferential positions of the second semicircular ring 602 and the corresponding first semicircular ring 601 are staggered, and the two together form a ring structure with a C-shaped cross section.
[0026] The specific usage and function of this embodiment are as follows: During installation, first, fix the upper cover connector 1 to the rice cooker's upper cover and the lower cover connector 3 to the rice cooker's body. Then, align the hinge shaft 2 inside the upper cover connector 1 with the bushing 6 inside the lower cover connector 3. Since the bushing 6 is a C-shaped structure formed by the staggered splicing of the first semi-circular ring 601 and the second semi-circular ring 602 along the circumference, this structure has elastic deformation space, allowing the hinge shaft 2 to be quickly and directly inserted into the bushing 6, achieving initial positioning and installation of the hinge shaft 2 and bushing 6. Next, align the connecting cover 4 with the front side of the lower cover connector 3 and tighten the threads using the fixing screws 5. At this point, the bushing 6 inside the connecting cover 4 and the bushing 6 inside the lower cover connector 3 precisely align, together forming a cylindrical structure with both ends connected. The inner diameter of this cylindrical structure matches the outer diameter of the hinge shaft 2, providing stable positioning for the hinge shaft 2 and guiding its rotation, ensuring the upper cover can open and close flexibly around the hinge shaft 2, completing the overall installation.
[0027] During the disassembly and maintenance phase, simply use a tool to unscrew the fixing screws 5 to separate the connecting cover 4 from the lower cover connecting piece 3. After separation, the lower cover connecting piece 3 and the bushing 6 inside the connecting cover 4 are disassembled simultaneously. The hinge shaft 2 is no longer limited by the cylindrical structure, and the rice cooker lid can be easily separated from the pot body. This facilitates the inspection and replacement of the internal components of the lower cover connecting piece 3, the hinge shaft 2, or the bushing 6 without the need for complete disassembly and reassembly of the hinge structure. The operation is convenient and can reduce maintenance costs. Example 2
[0028] Based on Example 1, such as Figures 1 to 7 As shown, it also includes a maintenance component, which is located inside the lower cover connector 3.
[0029] The maintenance components include a slide groove 603 and a paddle 201. The slide groove 603 is formed inside the bushing 6. The paddle 201 is fixedly installed on the outside of the hinge shaft 2 and is slidably connected inside the slide groove 603.
[0030] The maintenance components also include: a drive block 701, a drive rack 702, and a return spring 7021. The drive block 701 is vertically slidably connected to the bottom of the slide groove 603; the drive rack 702 is fixedly connected to the end of the drive block 701 and vertically slidably connected to the inside of the oil tank 7; the end of the return spring 7021 is fixedly installed inside the oil tank 7, and the top of the return spring 7021 is fixedly installed at the end of the drive rack 702.
[0031] The maintenance components also include: a drive shaft 703, a threaded rod 704, and a one-way limiting mechanism 705. The drive shaft 703 is rotatably connected inside the oil tank 7; the threaded rod 704 is rotatably connected inside the oil tank 7; and the one-way limiting mechanism 705 is installed at the middle position between the drive shaft 703 and the threaded rod 704.
[0032] The maintenance components also include: a driven gear 706, a piston 707, and an oil pipe 708. The driven gear 706 is coaxially fixedly installed on the outside of the drive shaft 703, and the driven gear 706 and the drive rack 702 mesh with each other. The piston 707 is slidably connected inside the oil tank 7 and threadedly connected to the outside of the threaded rod 704. One end of the oil pipe 708 is fixedly connected to the outside of the oil tank 7, and the other two ends of the oil pipe 708 are fixedly connected to the inside of two sets of bushings 6.
[0033] The specific usage and function of this embodiment are as follows: When the rice cooker lid is frequently opened and closed around the hinge shaft 2 to perform cooking operations, the automatic lubrication mechanism of the maintenance components is triggered simultaneously. During the opening and closing of the lid, the hinge shaft 2 drives the outer fixed paddle 201 to slide along the slide groove 603 inside the bushing 6. When the paddle 201 slides to the bottom of the slide groove 603, it exerts a downward squeezing force on the drive block 701. At this time, the drive block 701 slides vertically downward along the slide groove 603, and the drive rack 702 fixed at its end slides down inside the oil tank 7 simultaneously, compressing the return spring 7021 to store energy.
[0034] The linear downward motion of the drive rack 702, through tooth meshing transmission, drives the driven gear 706 to rotate, and the drive shaft 703, coaxially fixed with the driven gear 706, rotates synchronously. The drive shaft 703 transmits rotational power unidirectionally to the threaded rod 704 via a one-way limiting mechanism 705 composed of ratchet and pawl. When the threaded rod 704 rotates, it utilizes the threaded transmission principle to drive the piston 707 inside the oil tank 7 to move linearly along the axial direction, pressurizing the lubricating oil stored in the oil tank 7 and pushing it to the oil delivery pipe 708. The lubricating oil is then distributed through the oil delivery pipe 708 to the interiors of the two sets of bushings 6, precisely delivering it to the mating gap between the hinge shaft 2 and the bushing 6, achieving automatic lubrication of the rotating contact surfaces of both, effectively reducing wear caused by long-term friction, and extending the service life of the hinge structure.
[0035] When the rice cooker lid resets, the pressure exerted by the lever 201 on the drive block 701 disappears. The reset spring 7021 drives the drive rack 702 and drive block 701 to reset upwards, and the drive shaft 703 rotates in the opposite direction. Due to the one-way locking characteristic of the ratchet and pawl of the one-way limiting mechanism 705, the threaded rod 704 does not reverse, and the piston 707 remains in the same position, preventing backflow of lubricating oil. Through the pitch matching between the piston 707 and the threaded rod 704, lubricating oil is delivered quantitatively as needed, ensuring stable lubrication.
[0036] The following points should be noted in this article: 1. The accompanying drawings of this embodiment only involve the structures involved in this embodiment; other structures can refer to the general design.
[0037] 2. Where there is no conflict, this embodiment and the features in the embodiment can be combined with each other to obtain new embodiments.
[0038] The above are merely specific implementations of this embodiment, but the protection scope of this embodiment is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this embodiment should be included within the protection scope of this embodiment. Therefore, the protection scope of this embodiment should be determined by the protection scope of the claims.
Claims
1. A hinge structure for an easy-to-install rice cooker lid, characterized in that: This easy-to-install electric rice cooker lid hinge structure includes an upper lid connector (1), a hinge shaft (2), a lower lid connector (3), a connecting cover (4), a fixing screw (5), a bushing (6), an oil tank (7), an installation component, and a maintenance component. The hinge shaft (2) is fixedly installed inside the upper lid connector (1); the lower lid connector (3) is rotatably connected to the outside of the hinge shaft (2); the connecting cover (4) is snapped onto the front side of the lower lid connector (3); and the fixing screw (5) is threaded onto the... Inside the lower cover connector (3); the bushing (6) is provided in two sets, and the two sets of bushings (6) are respectively fixedly installed inside the lower cover connector (3) and the connecting cover (4), and after splicing, they together form a cylindrical structure with both ends through, and the inner diameter of the cylindrical structure is adapted to the outer diameter of the hinge shaft (2); the oil tank (7) is fixedly installed inside the lower cover connector (3); the installation component is set inside the lower cover connector (3); the maintenance component is set inside the lower cover connector (3).
2. The easy-to-install hinge structure for a rice cooker lid as described in claim 1, characterized in that: The mounting assembly includes: a first semicircular ring (601) and a second semicircular ring (602). The first semicircular ring (601) is provided in two sets, and the two sets of the first semicircular ring (601) are disposed inside the two sets of bushings (6). The two sets of the first semicircular ring (601) are respectively fixedly installed inside the lower cover connector (3) and the connecting cover (4). The second semicircular ring (602) is provided in two sets, and the two sets of the second semicircular ring (602) are respectively fixedly connected to the inner side of the two sets of the first semicircular ring (601). The circumferential positions of the second semicircular ring (602) and the corresponding first semicircular ring (601) are staggered, and the two together enclose a bushing (6) with a C-shaped annular structure.
3. The easy-to-install hinge structure for a rice cooker lid as described in claim 1, characterized in that: The maintenance component includes a slide groove (603) and a paddle (201). The slide groove (603) is formed inside the bushing (6). The paddle (201) is fixedly installed on the outside of the hinge shaft (2) and is slidably connected inside the slide groove (603).
4. The easy-to-install hinge structure for a rice cooker lid as described in claim 3, characterized in that: The maintenance component further includes: a drive block (701), a drive rack (702), and a return spring (7021). The drive block (701) is vertically slidably connected to the bottom of the slide groove (603). The drive rack (702) is fixedly connected to the end of the drive block (701) and vertically slidably connected to the inside of the oil tank (7). The end of the return spring (7021) is fixedly installed inside the oil tank (7), and the top of the return spring (7021) is fixedly installed at the end of the drive rack (702).
5. The easy-to-install hinge structure for a rice cooker lid as described in claim 3, characterized in that: The maintenance component also includes a drive shaft (703), a threaded rod (704), and a one-way limiting mechanism (705). The drive shaft (703) is rotatably connected inside the oil tank (7); the threaded rod (704) is rotatably connected inside the oil tank (7); and the one-way limiting mechanism (705) is installed at the middle position between the drive shaft (703) and the threaded rod (704).
6. The easy-to-install hinge structure for a rice cooker lid as described in claim 3, characterized in that: The maintenance assembly also includes: a driven gear (706), a piston (707), and an oil pipe (708). The driven gear (706) is coaxially fixedly installed on the outside of the drive shaft (703), and the driven gear (706) and the drive rack (702) mesh with each other. The piston (707) is slidably connected inside the oil tank (7), and the piston (707) is threadedly connected to the outside of the threaded rod (704). One end of the oil pipe (708) is fixedly connected to the outside of the oil tank (7), and the other two ends of the oil pipe (708) are fixedly connected inside two sets of bushings (6).