Cabinet door returning structure and storage cabinet

Abstract

The utility model relates to a kind of storage cabinet production technical field, specifically to a kind of cabinet door regression structure and storage cabinet. Including including rotating part and fixed part, rotating part includes the fixed sleeve of vertical arrangement, the vertical direction in fixed sleeve is slidably provided with slide bar, slide bar and fixed sleeve are elastically connected, slide bar lower end is fixed with square bar, slide bar lower side is provided with rotating lever, rotating lever is provided with square hole, square bar is inserted in square hole;Fixed part includes fixed block, rotating lever rotation is arranged in fixed block, the upper end of the fixed block outside rotating lever is provided with ring groove, ring groove is rotationally provided with worm wheel, fixed block is rotationally connected with worm, worm and worm wheel are engaged, rotating lever is fixed with fixed plate, the upper end of worm wheel is fixed with support plate, support plate and fixed plate are connected by arc lower spring.This technical scheme makes cabinet door automatically rotate back to original position after opening release by the elastic force of lower spring, avoids the trouble of manual closing, reduces user operation steps.

Description

Technical Field

[0001] This utility model relates to the field of storage cabinet manufacturing technology, specifically to a cabinet door return structure and a storage cabinet. Background Technology

[0002] An existing type of freezer includes a cabinet and a door. A steel wire connects the door and the cabinet to achieve automatic door closing. The steel wire is fixed to a base on the cabinet, and the door closes automatically due to the torque of the steel wire. However, repeated opening and closing of the door can cause torque fatigue in the steel wire, leading to the door not closing properly. Adjusting the door's closing torque after it's installed on the cabinet is very difficult, usually requiring the cabinet to be inverted, the retaining pin removed, a special tool used for adjustment, and then the retaining pin reinserted.

[0003] To address the aforementioned technical problems, patent document CN223448754U discloses a cabinet door return structure and a storage cabinet. The torque of the return drive component can be adjusted by rotating a rotary adjustment component. When the return drive component experiences torque fatigue, leading to a problem where the door cannot close properly, the rotary adjustment component can be rotated to increase the torque of the return drive component. Torque adjustment is convenient, ensuring the storage cabinet's airtightness, reducing maintenance costs, and extending the storage cabinet's service life. However, the unidirectional rotation structure in this technical solution is located inside the rotary adjustment component, making repairs inconvenient in case of malfunction. Utility Model Content

[0004] The main purpose of this utility model is to provide a cabinet door return structure and storage cabinet that is convenient for later maintenance, has a simple structure, and low manufacturing cost.

[0005] To achieve the above objectives, the technical solution provided by this utility model is as follows: A cabinet door retraction structure includes a rotating part and a fixed part. The rotating part includes a vertically arranged fixed sleeve, a slide rod slidably arranged vertically inside the fixed sleeve, the slide rod being elastically connected to the fixed sleeve, a square rod concentrically fixed at the lower end of the slide rod, and a rotating rod concentrically arranged below the slide rod, with a square hole opened inside the rotating rod, the square rod being inserted into the square hole. The fixed part includes a fixed block, the rotating rod being rotatably arranged inside the fixed block, an annular groove opened at the upper end of the fixed block outside the rotating rod, the annular groove being concentric with the rotating rod, a worm gear being concentrically rotatably arranged inside the annular groove, a worm being rotatably connected to the fixed block, the worm gear meshing with the worm gear, a fixed plate being fixed to the rotating rod, a support plate being fixed to the upper end of the worm gear, and the support plate and the fixed plate being connected by an arc-shaped lower spring.

[0006] Specifically, a slide rail is fixed to one side of the upper end of the fixed sleeve. The slide rail is vertically arranged, and a slider is slidably arranged inside the slide rail. The slider is fixedly connected to the slide rod. A top rod is fixed to the upper end of the slide rail, and the top rod is connected to the slide rod through an upper spring.

[0007] Specifically, an annular groove is provided on the outer edge of the rotating rod above the fixing block. The inner part of the cover ring is rotatably engaged in the groove, and the outer part of the cover ring is bent downward to form a bent part. The lower end of the bent part is in rotatable contact with the upper end face of the worm gear. The cover ring and the fixing block are fixedly connected by multiple screws.

[0008] Specifically, an arc-shaped rod is fixed on the fixed plate. The arc-shaped rod is concentric with the rotating rod, passes through the support plate, and is slidably connected to the support plate. The arc-shaped rod passes through an arc-shaped lower spring.

[0009] Specifically, a flat groove is provided at the upper end of the worm gear.

[0010] A storage cabinet includes a return structure; it also includes a cabinet body and a cabinet door, with a fixing sleeve fixed to the cabinet door and a fixing block fixed to the cabinet body.

[0011] Specifically, the cabinet has a slot corresponding to the fixing sleeve, and the fixing block is fixed in the slot.

[0012] Specifically, a through hole is provided on the sliding rod above the fixed sleeve, and a vertical hole corresponding to the through hole is provided on the cabinet door.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This technical solution utilizes the elastic force of a lower spring to automatically rotate the cabinet door back to its original position after opening and closing. This eliminates the inconvenience of manual closing, reduces user operation steps, and is especially suitable for storage cabinets that are frequently opened and closed. Simultaneously, the arc-shaped rod design ensures that the spring compresses along a specific trajectory, making the reset action more stable and reliable, preventing accidental shaking or jamming of the cabinet door, and enhancing overall safety.

[0014] 2. The worm gear mechanism allows users to adjust the position of the support plate by rotating the worm, thereby changing the compression and elasticity of the lower spring. This directly controls the force required to open the cabinet door and increases the pressure exerted by the door on the cabinet body. On the one hand, this accommodates different user needs, such as allowing elderly people or children to adjust the resistance; on the other hand, the increased pressure improves the door's sealing performance, reducing dust or moisture intrusion and extending the cabinet's lifespan. The worm gear's self-locking function ensures the adjusted position is fixed, preventing accidental loosening and maintaining stability.

[0015] 3. In the structural design of this technical solution, the combination of through holes, vertical holes, and screwdrivers makes installation more convenient. Users can temporarily fix the sliding rod to align the square rod with the square hole, ensuring quick and easy installation of the cabinet door. After the cabinet door is disassembled, the curved rod and support plate can be separated by rotating the worm gear, facilitating direct replacement of the lower spring. This reduces reliance on specialized tools and maintenance time, improving the maintainability and economy of the product.

[0016] 4. The compact resetting structure is seamlessly integrated into the cabinet door and interior, taking up no extra space and suitable for storage cabinets of various sizes. Meanwhile, details such as the cover ring and grooves enhance the sealing and dustproofing of rotating parts, reducing wear and the risk of failure, improving the reliability of the structure during long-term use, and ensuring the persistent effectiveness of the resetting function. Attached Figure Description

[0017] Figure 1 This is a sectional view of the storage cabinet body and doors connected by a regression structure.

[0018] Figure 2 for Figure 1 A magnified view of region A in the middle.

[0019] Figure 3 This is a top view showing the fit between the sliding rod and the fixed sleeve.

[0020] Figure 4 This is a bottom view of the cover ring.

[0021] Figure 5 This is a schematic diagram showing the connection between the fixed block and the rotating rod.

[0022] The components in the attached diagram are named as follows: 1. Cabinet body, 2. Cabinet door, 3. Slot, 4. Fixing block, 5. Fixing sleeve, 6. Slide rod, 7. Slide rail, 8. Vertical hole, 9. Top rod, 10. Upper spring, 11. Slider, 12. Rotating rod, 13. Ring groove, 14. Worm gear, 15. Cover ring, 16. Worm, 17. Fixing plate, 18. Lower spring, 19. Square hole, 20. Square rod, 21. Support plate, 22. Arc rod, 23. Flat groove, 24. Through hole. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Example 1: Refer to Figures 1-5 As shown, a cabinet door retraction structure includes a rotating part and a fixing part.

[0025] The rotating part includes a vertically arranged fixed sleeve 5, and a slide rod 6 is slidably arranged vertically inside the fixed sleeve 5. The slide rod 6 is elastically connected to the fixed sleeve 5. Specifically, a slide rail 7 is fixed to one side of the upper end of the fixed sleeve 5. The slide rail 7 is vertically arranged, and a slider 11 is slidably arranged inside the slide rail 7. The slider 11 is fixedly connected to the slide rod 6. A top rod 9 is fixed to the upper end of the slide rail 7. The top rod 9 is connected to the slide rod 6 through an upper spring 10.

[0026] A square rod 20 is concentrically fixed at the lower end of the slide rod 6, and a rotating rod 12 is concentrically arranged below the slide rod 6. A square hole 19 is opened in the rotating rod 12, and the square rod 20 is inserted into the square hole 19.

[0027] The fixing part includes a fixing block 4. A rotating rod 12 is rotatably mounted inside the fixing block 4. An annular groove 13 is formed on the upper end of the fixing block 4 outside the rotating rod 12. The annular groove 13 is concentric with the rotating rod 12. A worm gear 14 is rotatably mounted concentrically inside the annular groove 13. A worm 16 is rotatably connected to the fixing block 4. The worm 16 meshes with the worm gear 14. A flat groove 23 is formed on the upper end of the worm 16. A fixing plate 17 is fixed on the rotating rod 12. A support plate 21 is fixed on the upper end of the worm gear 14. The support plate 21 and the fixing plate 17 are connected by an arc-shaped lower spring 18.

[0028] An arc-shaped rod 22 is fixed on the fixed plate 17. The arc-shaped rod 22 is concentric with the rotating rod 12. The arc-shaped rod 22 passes through the support plate 21 and is slidably connected to the support plate 21. The arc-shaped rod 22 passes through the arc-shaped lower spring 18.

[0029] An annular groove is provided on the outer edge of the rotating rod 12 above the fixing block 4. The inner part of the cover ring 15 is rotatably engaged in the groove, and the outer part of the cover ring 15 is bent downward to form a bent part. The lower end of the bent part is in rotatable contact with the upper end face of the worm gear 14. The cover ring 15 and the fixing block 4 are fixedly connected by multiple screws.

[0030] After the square rod 20 is inserted into the square hole 19, when the fixed sleeve 5 and the sliding rod 6 rotate, the square rod 20, the rotating rod 12, and the fixed plate 17 rotate accordingly, and the lower spring 18 is compressed. When the fixed sleeve 5 and the sliding rod 6 are released, the fixed sleeve 5 and the sliding rod 6 rotate back to their original positions under the elastic force of the lower spring 18. During the rotation of the square rod 20, the rotating rod 12, and the fixed plate 17, the arc-shaped rod 22 rotates accordingly, and the arc-shaped rod 22 can ensure that the lower spring 18 is compressed along the arc-shaped trajectory of the arc-shaped rod 22.

[0031] Example 2: Based on Example 1, referring to... Figures 1-2 As shown, a storage cabinet includes the aforementioned return structure.

[0032] It also includes a cabinet body 1 and a cabinet door 2. A fixing sleeve 5 is fixed to the cabinet door 2, and a fixing block 4 is fixed inside the cabinet body 1. A slot 3 corresponding to the fixing sleeve 5 is opened on the cabinet body 1, and the fixing block 4 is fixed inside the slot 3.

[0033] A through hole 24 is provided on the slide rod 6 above the fixed sleeve 5, and a vertical hole 8 corresponding to the through hole 24 is provided on the cabinet door 2.

[0034] During installation, fix the fixing sleeve 5 to the cabinet door 2, ensuring that the through hole 24 aligns with the lower end of the vertical hole 8. Then, cut a slot 3 on the cabinet body 1 corresponding to the fixing sleeve 5, and fix the fixing block 4 inside the slot 3. Control the diameter of the slot 3 to ensure that the screwdriver can pass through the slot 3 and engage with the flat groove 23 at the upper end of the worm gear 16, allowing the worm gear 16 to be rotated using the screwdriver.

[0035] During the process of installing cabinet door 2 onto cabinet body 1, a screwdriver is used to penetrate the lower end of vertical hole 8 and through hole 24, causing slide rod 6, square rod 20 and slider 11 to move upward and compress upper spring 10. When the lower end of square rod 20 is flush with the lower end of cabinet door 2, cabinet door 2 is installed into cabinet body 1, and square rod 20 is aligned with square hole 19. The screwdriver is then pulled out, and under the elastic force of upper spring 10, slide rod 6, square rod 20 and slider 11 move downward, with square rod 20 inserted into square hole 19 of rotating rod 12.

[0036] During the process of opening cabinet door 2, the fixed sleeve 5 and slide rod 6 rotate, and the square rod 20, rotating rod 12 and fixed plate 17 rotate accordingly. The lower spring 18 is compressed. When cabinet door 2 is released, the fixed sleeve 5 and slide rod 6 rotate back to their original positions under the elastic force of the lower spring 18.

[0037] Rotating the worm gear 16 causes the worm wheel 14 to rotate, which in turn brings the support plate 21 closer to the fixed plate 17 and compresses the lower spring 18. This increases the elastic force of the lower spring 18 on the fixed plate 17, ultimately increasing the force required to open the cabinet door 2. The increased elastic force of the lower spring 18 on the fixed plate 17 enhances the pressure exerted by the cabinet door 2 on the cabinet body 1, improving both the pressure and the sealing effect. The self-locking function of the worm gear 16 and worm wheel 14 prevents the worm wheel 14 from rotating after the worm gear 16 stops rotating, ensuring that the support plate 21 remains in its designed position.

[0038] After disassembling cabinet door 2, rotate worm gear 16. Worm gear 16 drives worm wheel 14 and fixed plate 17 to rotate. When arc rod 22 separates from support plate 21, it is convenient to replace lower spring 18.

[0039] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements 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 cabinet door reversal structure, comprising a rotating part and a fixing part, characterized in that, The rotating part includes a vertically arranged fixed sleeve (5), a slide rod (6) is slidably arranged vertically inside the fixed sleeve (5), the slide rod (6) is elastically connected to the fixed sleeve (5), a square rod (20) is concentrically fixed at the lower end of the slide rod (6), a rotating rod (12) is concentrically arranged below the slide rod (6), a square hole (19) is opened in the rotating rod (12), and the square rod (20) is inserted into the square hole (19); the fixing part includes a fixing block (4), the rotating rod (12) is rotatably arranged in the fixing block (4), and the rotating rod (12) rotates... An annular groove (13) is provided on the upper end of the fixing block (4) on the outside of the rod (12). The annular groove (13) is concentric with the rotating rod (12). A worm wheel (14) is rotatably arranged in the annular groove (13). A worm (16) is rotatably connected to the fixing block (4). The worm (16) meshes with the worm wheel (14). A fixing plate (17) is fixed on the rotating rod (12). A support plate (21) is fixed on the upper end of the worm wheel (14). The support plate (21) and the fixing plate (17) are connected by an arc-shaped lower spring (18).

2. The cabinet door return structure according to claim 1, characterized in that, A slide rail (7) is fixed on one side of the upper end of the fixed sleeve (5). The slide rail (7) is vertically arranged. A slider (11) is slidably arranged inside the slide rail (7). The slider (11) is fixedly connected to the slide rod (6). A top rod (9) is fixed at the upper end of the slide rail (7). The top rod (9) and the slide rod (6) are connected by an upper spring (10).

3. The cabinet door return structure according to claim 1, characterized in that, The outer edge of the rotating rod (12) above the fixing block (4) is provided with an annular groove. The inner part of the cover ring (15) is rotated and engaged in the groove. The outer part of the cover ring (15) is bent downward to form a bent part. The lower end of the bent part is in rotational contact with the upper end face of the worm gear (14). The cover ring (15) and the fixing block (4) are fixedly connected by multiple screws.

4. The cabinet door return structure according to claim 1, characterized in that, An arc-shaped rod (22) is fixed on the fixed plate (17). The arc-shaped rod (22) is concentric with the rotating rod (12). The arc-shaped rod (22) passes through the support plate (21). The arc-shaped rod (22) is slidably connected to the support plate (21). The arc-shaped rod (22) passes through the arc-shaped lower spring (18).

5. The cabinet door return structure according to claim 1, characterized in that, The upper end of the worm (16) is provided with a flat groove (23).

6. A storage cabinet, characterized in that, The system includes the regression structure described in any one of claims 1-5, and further includes a cabinet (1) and a cabinet door (2), with a fixing sleeve (5) fixed on the cabinet door (2) and a fixing block (4) fixed inside the cabinet (1).

7. A storage cabinet according to claim 6, characterized in that, The cabinet (1) has a slot (3) corresponding to the fixing sleeve (5), and the fixing block (4) is fixed in the slot (3).

8. A storage cabinet according to claim 6, characterized in that, A through hole (24) is provided on the slide rod (6) above the fixed sleeve (5), and a vertical hole (8) corresponding to the through hole (24) is provided on the cabinet door (2).

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