A retractable hanging bookshelf for dormitory bed rail
By designing a U-shaped hanging part and a three-sided retractable hanging bookshelf, the compatibility and stability problems of existing dormitory bed bookshelves have been solved, achieving stable hanging and convenient operation, enhancing load-bearing capacity, and avoiding damage to the bed rails.
Patent Information
- Application Number
- CN202522626311.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-11
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-12-11
AI Technical Summary
Existing dormitory bed bookshelves have problems such as fixed-size surface contact brackets that easily damage bed rails and poor adaptability, while general-purpose telescopic bookshelves have problems such as jamming and easy sliding and tipping.
Design a retractable hanging bookshelf that includes a U-shaped hanging part, a three-sided frame and a telescopic mechanism. It adopts a diamond-shaped cross linkage and a limiting mechanism, combined with anti-slip rubber pads and adjustable fastening bolts to achieve multi-state telescopic and stable hanging.
It achieves a stable hanging of the bookshelf, preventing slippage and tipping, enhancing adaptability and load-bearing capacity, making operation convenient, and preventing damage to the bed rails.
Smart Images
Figure CN224924763U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of daily necessities technology, specifically a retractable hanging bookshelf for bedroom bed rails. Background Technology
[0002] "Dormitory bedside bookshelves" is a niche home furnishing product segment developed to address the challenges of limited space and high bed utilization in university dormitories. It goes beyond traditional bookshelves, encompassing reading, studying, and storage in one unit. Product types in this segment primarily include folding tables on beds, bedside hanging baskets, and wall-mounted shelves. The core principle is to utilize vertical space and the bed structure to solve pain points related to reading, using computers, and storing miscellaneous items in bed.
[0003] In the current market of dormitory bed bookshelves, mainstream products suffer from two main defects: one is fixed-size surface-contact shelves, which, while providing a secure grip, cannot adjust the storage space, require drilling or strong clamps for installation, are prone to damaging bed rails, and have poor compatibility; the other is general-purpose telescopic bookshelves, which are mostly unidirectional folding or simple linkage structures, allowing only limited extension and retraction, and lack precise guidance and limiting designs, resulting in jamming during extension and retraction, displacement and deformation under load, and the hanging structure is not specifically optimized for bed rails, making it prone to sliding and tipping over. Utility Model Content
[0004] To overcome the above deficiencies, this utility model provides a retractable hanging bookshelf for dormitory bed rails that overcomes or at least partially solves the above technical problems.
[0005] This utility model is implemented as follows: This utility model provides a retractable hanging bookshelf for dormitory bed rails, including a U-shaped hanging part, the bottom of which is provided with a three-sided frame, and there are two U-shaped hanging parts. The three-sided frame includes: The front frame is connected to the bottom of the U-shaped hook-and-connector by bolts. There are two front frames, which are located at the bottom of the U-shaped hook-and-connector respectively. The front two parts of the front frame are respectively provided with a left frame and a right frame. A telescopic mechanism is provided between the three frame bodies. Waist-shaped holes are provided on the frames of the front frame, left frame and right frame, and a limiting mechanism is provided on the side of the waist-shaped holes.
[0006] In one embodiment of this utility model, the inner side of the U-shaped hook is provided with a hook anti-slip pad, and the surface of the pad is pressed with a diamond-shaped anti-slip pattern. A fastening bolt is provided on one side of the body of the U-shaped hook.
[0007] In one embodiment of this utility model, the waist-shaped hole is provided with a first-level limiting groove, a second-level limiting groove and a third-level limiting groove in sequence from the outside to the inside.
[0008] In one embodiment of this utility model, the telescopic mechanism includes connecting rods arranged in a diamond pattern, and the ends of the connecting rods are connected by hinges.
[0009] In one embodiment of this utility model, the limiting mechanism includes a positioning shaft, which is movably connected to the frame of the front frame, the left frame, and the right frame.
[0010] In one embodiment of this utility model, two slotted double circular pieces are movably inserted into the positioning shaft via bearings, and a rotating arm is provided in the slot of the slotted double circular pieces.
[0011] In one embodiment of this utility model, a fixing washer is provided at the end of the rotating arm, a spring shaft is provided on one side of the fixing washer, a movable washer is movably inserted at one end of the spring shaft, and a positioning buckle is movably inserted at the side of the movable washer.
[0012] In one embodiment of this utility model, a limiting piece is provided at the end of the spring shaft away from the fixed pad, and the positioning buckle is connected to the movable shaft at the end of the connecting rod.
[0013] The present invention provides a retractable hanging bookshelf for bedroom bed rails, the advantages of which include: 1. By setting a limiting mechanism, the waist-shaped hole guide has three levels of positioning limiting grooves, corresponding to the three states of "retracted, half-expanded, and fully expanded". When the frame is extended to the target position, the buckle automatically engages with the positioning groove under the action of elasticity to fix the length and prevent it from shrinking on its own after bearing the load. Pressing the buckle can release the fixation, making the operation convenient.
[0014] 2. By setting up a three-sided frame, which consists of a front frame, a left frame, and a right frame, a wraparound storage space is formed. Unlike the existing one-way telescopic structure, each frame uses stainless steel connecting rods, which have the advantage of strong load-bearing capacity. The connecting rods are connected by stainless steel hinges to ensure flexible rotation and no axial play, avoiding loosening after repeated use. Attached Figure Description
[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.
[0016] Figure 1 This is a structural schematic diagram provided by an embodiment of the present utility model; Figure 2A schematic diagram of the back of the embodiment of this utility model; Figure 3 Perspective view provided for embodiments of this utility model; Figure 4 A schematic diagram of the three-sided frame structure provided for an embodiment of this utility model; Figure 5 A schematic diagram of the limiting mechanism provided for an embodiment of this utility model.
[0017] In the diagram: 1. U-shaped hook; 2. Three-sided frame; 201. Front frame; 202. Left frame; 203. Right frame; 204. Waist-shaped hole; 2041. First-level limiting groove; 2042. Second-level limiting groove; 2043. Third-level limiting groove; 3. Telescopic mechanism; 301. Connecting rod; 4. Limiting mechanism; 401. Positioning shaft; 402. Slotted double circular plate; 403. Rotary arm; 404. Fixed shim; 405. Movable shim; 406. Spring shaft; 407. Positioning buckle. Detailed Implementation
[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Example
[0019] Reference Figures 1-4This technical solution provides a retractable hanging bookshelf for dormitory bed rails, comprising a U-shaped hanging part 1, with a three-sided frame 2 at the bottom of the U-shaped hanging part 1. There are two U-shaped hanging parts 1. The three-sided frame 2 includes a front frame 201 and an oblong hole 204. The front frame 201 is connected to the bottom of the U-shaped hanging part 1 by bolts. There are two front frames 201, each located at the bottom of the U-shaped hanging part 1. The front two parts of the front frame 201 respectively have a left frame 202 and a right frame 203. A telescopic mechanism 3 is provided between the three-sided frame 2. The oblong hole 204 is formed on the frame of the front frame 201, the left frame 202, and the right frame 203. A limiting mechanism 4 is provided on the side of the oblong hole 204. Bookshelf shelves can be added between shelves 02 and 203 on the right. The shelves are made of food-grade PP plastic, 5mm thick, environmentally friendly, odorless, moisture-proof and wear-resistant. The surface is evenly distributed with 2mm high anti-slip bumps to increase the friction between books and shelves and prevent slippage. The shelves are detachably connected to the telescopic frame rods via elastic buckles. The buckle opening size is precisely matched with the stainless steel rods. The buckle base has reinforcing ribs to ensure connection strength and facilitate adjustment of the installation position according to the height of the books. Up to 3 shelves can be set. Each shelf has an integrated injection-molded cross reinforcing rib at the bottom, increasing the shelf's load-bearing capacity to over 5kg. It can stably store heavy items such as professional textbooks and reference books, which is different from the defects of existing plastic shelves that are easy to bend and deform.
[0020] Reference Figures 1-4 Based on the same concept as Embodiment 1 above, this embodiment also proposes that the inner side of the U-shaped hanging part 1 is provided with a hanging anti-slip rubber pad, and the surface of the rubber pad is pressed with a diamond anti-slip pattern. A fastening bolt is provided on one side of the body of the U-shaped hanging part 1. The surface of the rubber pad is pressed with a diamond anti-slip pattern, which can increase the static friction coefficient with the bed rail to prevent the bookshelf from sliding, and also buffer the daily vibration of the bed rail to prevent scratches and wear caused by rigid contact. Adjustable fastening bolts are added on both sides of the opening of the hanging part, and the ends of the bolts are connected to arc-shaped rubber pressure blocks. By rotating the bolts, the stroke can be finely adjusted by 0-2cm. Even when facing irregular bed rails, it can fit tightly, solving the pain point of existing hanging racks that are "either not clamped tightly or clamped too loosely".
[0021] Reference Figures 1-4 Based on the same concept as Embodiment 1 above, this embodiment also proposes that the waist-shaped hole 204 is provided with a first-level limiting groove 2041, a second-level limiting groove 2042 and a third-level limiting groove 2043 in sequence from the outside to the inside.
[0022] Reference Figures 1-4 Based on the same concept as Embodiment 1 above, this embodiment also proposes a telescopic mechanism 3 including a connecting rod 301, the connecting rods 301 being arranged in a diamond-shaped cross distribution, and the ends of the connecting rods 301 being connected by hinges.
[0023] Reference Figures 1-4 Based on the same concept as Embodiment 1 above, this embodiment also proposes a limiting mechanism 4 including a positioning shaft 401, which is movably connected to the frame of the front frame 201, the left frame 202 and the right frame 203.
[0024] Reference Figures 1-4 Based on the same concept as Embodiment 1 above, this embodiment also proposes that two slotted double circular pieces 402 are movably connected to the positioning shaft 401 via bearings, and a rotating arm 403 is provided in the slot of the slotted double circular pieces 402.
[0025] Reference Figures 1-4 Based on the same concept as in Embodiment 1 above, this embodiment also proposes that the end of the rotating arm 403 is provided with a fixing pad 404, a spring shaft 406 is provided on one side of the fixing pad 404, a movable pad 405 is movably inserted into one end of the spring shaft 406, and a positioning buckle 407 is movably inserted into the side of the movable pad 405.
[0026] Reference Figures 1-4 Based on the same concept as in Embodiment 1 above, this embodiment also proposes that a limiting piece is provided at the end of the spring shaft 406 away from the fixed pad 404, and the positioning buckle 407 is connected to the movable shaft at the end of the connecting rod 301.
[0027] Specifically, the working process or principle of this retractable hanging bookshelf for dormitory beds is as follows: In use, the U-shaped hook is attached to the dormitory bed rail. The U-shaped hook is made of high-strength ABS plastic through a single injection molding process, featuring impact resistance and lightweight characteristics. The opening width is designed to be 5-8cm, precisely covering the mainstream 3-5cm thick dormitory bed rails on the market. A 2-3mm thick food-grade silicone anti-slip pad is attached and fixed to the inside of the hook. The surface of the pad is pressed with a diamond-shaped anti-slip pattern, which increases the static friction coefficient with the bed rail, preventing the bookshelf from sliding, and also cushions the daily vibration of the bed rail, eliminating scratches and wear caused by rigid contact. Adjustable fastening bolts are added to both sides of the opening of the hook. The ends of the bolts are connected to arc-shaped rubber pressure blocks. By rotating the bolts, a 0-2cm travel adjustment can be achieved. Pressing the movable pad allows the positioning buckle to disengage from different limit grooves of the waist-shaped hole, causing the diamond-shaped connecting rods to unfold at different angles, achieving "retracted, half-expanded, and fully expanded" configurations. There are three states. When the frame is extended to the target position, the buckle automatically engages with the positioning groove under the action of elasticity to fix the length and prevent it from shrinking on its own after bearing the load. Pressing the buckle will release the fixation, which will make the positioning buckle leave the different limiting grooves of the waist-shaped hole, so that the diamond-shaped connecting rods can be unfolded at different angles for further adjustment.
Claims
1. A retractable hanging bookshelf for bedroom bed rails, comprising a U-shaped hanging part (1), characterized in that: The bottom of the U-shaped hanging part (1) is provided with a three-sided frame (2), and there are two U-shaped hanging parts (1). The three-sided frame (2) includes: The front side frame (201) is connected to the bottom of the U-shaped hook part (1) by bolts. There are two front side frames (201) located at the bottom of the U-shaped hook part (1). The front side of the front side frame (201) is provided with a left side frame (202) and a right side frame (203) respectively. A telescopic mechanism (3) is provided between the three-sided frame body (2). Waist-shaped hole (204) is provided on the frame of the front frame (201), the left frame (202) and the right frame (203), and a limiting mechanism (4) is provided on the side of the waist-shaped hole (204).
2. A retractable hanging bookshelf for a dormitory bed rail according to claim 1, characterized in that, The inner side of the U-shaped hook part (1) is provided with a hook anti-slip pad, and the surface of the pad is pressed with a diamond anti-slip pattern. A fastening bolt is provided on one side of the body of the U-shaped hook part (1).
3. A retractable hanging bookshelf for a dormitory bed rail according to claim 2, characterized in that, The waist-shaped hole (204) has a first-level limiting groove (2041), a second-level limiting groove (2042), and a third-level limiting groove (2043) sequentially formed from the outside to the inside.
4. A retractable hanging bookshelf for a dormitory bed rail according to claim 3, characterized in that, The telescopic mechanism (3) includes connecting rods (301), which are arranged in a diamond pattern and are connected at their ends by hinges.
5. A retractable hanging bookshelf for a dormitory bed rail according to claim 4, characterized in that, The limiting mechanism (4) includes a positioning shaft (401), which is movably connected to the frame of the front frame (201), the left frame (202) and the right frame (203).
6. A retractable hanging bookshelf for a dormitory bed rail according to claim 5, characterized in that, Two slotted double circular plates (402) are movably connected to the positioning shaft (401) via bearings, and a rotating arm (403) is provided in the slot of the slotted double circular plate (402).
7. A retractable hanging bookshelf for a dormitory bed rail according to claim 6, characterized in that, The end of the rotating arm (403) is provided with a fixing pad (404), and a spring shaft (406) is provided on one side of the fixing pad (404). A movable pad (405) is movably inserted into one end of the spring shaft (406), and a positioning buckle (407) is movably inserted into the side of the movable pad (405).
8. A retractable hanging bookshelf for a dormitory bed rail according to claim 7, characterized in that, The spring shaft (406) has a limiting piece at one end away from the fixed pad (404), and the positioning buckle (407) is connected to the movable shaft at the end of the connecting rod (301).