Multifunctional bookcase

Abstract

The invention relates to the technical field of bookcases, in particular to a multifunctional bookcase. The bookcase comprises a base serving as a bearing body, the base is fixedly connected with a bookcase body, first electric push rods which are symmetrically distributed are installed on the inner side of the top wall of the base, and a supporting plate is fixedly connected between the telescopic ends of the first electric push rods which are symmetrically distributed; and symmetrically distributed trundles are arranged at the bottom of the base. The turning plate is used for unfolding the turning seat, the turning seat has the reading function, the gear set with the transmission ratio being 2: 1 drives the supporting piece to press downwards, the grounding area is enlarged, the backward turning moment caused by leaning of a reader is effectively counteracted, a forward tilting force arm is shortened through a synchronous gravity center shifting mechanism, and the toppling risk caused by pulling of a child is reduced; and then the first electric push rod controls the supporting plate to press downwards, the trundles are suspended, the plane makes contact with the ground, the static stability is improved, and the requirement for quick positioning of open scenes is met.

Description

Technical Field

[0001] The present invention relates to the technical field of bookcases, and particularly relates to a multifunctional bookcase. Background Art

[0002] With the popularization of public cultural spaces, bookcases are increasingly widely used in places such as open bookstores, libraries, and children's activity centers, mainly for storing and protecting books.

[0003] Traditional bookcase designs have significant deficiencies in terms of mobility, stability, and safety: Firstly, bookcases with casters rely on simple brakes or feet for fixation, and cannot effectively eliminate the risk of sliding. Especially on smooth floors, they are prone to displacement by external forces. Secondly, when placed independently, readers leaning on it can cause a moment of overturning backward, and children climbing on it can cause a moment of tilting forward. Existing anti-tipping designs are mostly one-way reinforcement or inefficient counterweights, and it is difficult to balance two-way stability. Thirdly, although traditional closed cabinet doors or inclined panels can prevent climbing, they seriously sacrifice the convenience of access and space utilization rate, and safety hazards such as falling and dropping of items frequently occur in open scenarios.

[0004] Based on the above situation, the present invention proposes a multifunctional bookcase. Summary of the Invention

[0005] In order to overcome the shortcomings of high sliding risk, one-way anti-overturning, and conflict between safety and function of traditional bookcases, the technical problem is: to provide a multifunctional bookcase.

[0006] The technical implementation solution of the present invention is: A multifunctional bookcase, including a base as a load-bearing main body, a bookcase main body is fixedly connected to the base, symmetrically distributed first electric push rods are installed inside the top wall of the base, a support plate is fixedly connected between the telescopic ends of the symmetrically distributed first electric push rods, and symmetrically distributed casters are provided at the bottom of the base.

[0007] As a preferred technical solution of the present invention, a flap is provided on the base, the flap is pivotally connected to the base through a rotating shaft, symmetrically distributed second gears are fixedly connected to the rotating shaft, symmetrically distributed hinge shafts are rotatably connected to the rear wall of the base, symmetrically distributed first gears are fixedly connected to each hinge shaft, and are connected to the adjacent second gears through chains, and the transmission ratio is 2:1.

[0008] As a preferred technical solution of the present invention, uniformly distributed guide rods are provided inside the flap, a chute is opened inside, circles are connected in the chute through keys, screws are threadedly connected between adjacent circles, symmetrically distributed connecting rods are key-connected to the ends of the screws, the symmetrically distributed connecting rods are rigidly fixed to the adjacent hinge shafts, and support members are threadedly connected to the middle of the screws.

[0009] As a preferred technical solution of the present invention, partition boards are evenly distributed in the bookcase main body. A second electric push rod is installed at the bottom of the lower partition board. The telescopic end of the second electric push rod is fixedly connected with a first telescopic plate. The first telescopic plate slides in the lower partition board. A rotating cylinder is rotatably connected to the first telescopic plate. A rotating plate is fixedly connected to the rotating cylinder. A sliding plate is slidably connected in the bookcase main body. Symmetrically distributed pressure sensors are installed between the sliding plate and the rotating plate. The pressure sensors and the second electric push rod are electrically connected through a control module.

[0010] As a preferred technical solution of the present invention, a second telescopic plate is slidably connected in the partition board of the upper layer. An expansion member is connected between the second telescopic plate and the upper partition board. A compression spring is connected between the second telescopic plate and the upper partition board. The compression spring is wound around the expansion member. Symmetrically distributed fixed pulleys are rotatably connected to the inner side of the rear wall of the bookcase main body. A pull rope is connected between the second telescopic plate and the first telescopic plate. The pull rope is wound around the symmetrically distributed fixed pulleys and passes through the partition boards of the upper and lower layers.

[0011] As a preferred technical solution of the present invention, convex strips are evenly distributed on the first telescopic plate and the second telescopic plate. Sliding grooves matching the convex strips are formed in the partition boards of the upper and lower layers.

[0012] As a preferred technical solution of the present invention, a sleeve is arranged outside the second electric push rod.

[0013] As a preferred technical solution of the present invention, symmetrically distributed fixing members are fixedly connected to the second telescopic plate. Rack bars are fixedly connected to the symmetrically distributed fixing members. A transmission shaft is rotatably connected to the upper part of the bookcase main body. A blocking rod is fixedly connected to the transmission shaft. Symmetrically distributed third gears are fixedly connected to the end of the transmission shaft. The third gears and the adjacent rack bars are meshed with each other.

[0014] The beneficial effects are as follows: The present invention utilizes the flip-up and flip-down seat with a reading function. The support member is driven by a gear set with a transmission ratio of 2:1 to press down, expanding the grounding area and effectively offsetting the backward turning moment caused by the reader's leaning. The synchronous center-of-gravity offset mechanism shortens the forward tilting force arm and reduces the risk of tipping caused by children's pulling. Then, the first electric push rod is used to control the pressing down of the support plate, making the casters suspended and the plane contact the ground to improve the static stability and adapt to the rapid positioning requirements of the open scenario.

[0015] The present invention achieves triple safety optimization through the dynamic partition adjustment system and the tooth-groove linkage design: first, the active anti-climbing mechanism. When a child climbs the lower partition, the pressure triggers the partition to bulge outward, destroying the continuous fulcrum, and synchronously linking the upper partition to retract, forming an "alternating concave and convex" barrier to block the climbing path; second, the tooth-groove engagement design, the convex bars and the slide grooves ensure that the partition remains flat when moving, preventing books from tipping over; finally, the sleeve takes into account both mechanical protection and daily maintenance needs.

[0016] The present invention uses the mechanical linkage of racks and gears and the blocking rod design to dynamically build a book anti-fall barrier when the second telescopic plate is retracted, which is perfectly compatible with the original anti-climbing system. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0018] Figure 2 It is a sectional view of the three-dimensional structure of the base, flap, support plate and other components of the present invention.

[0019] Figure 3 For the present invention Figure 2 Enlarged view of point A.

[0020] Figure 4 For the present invention Figure 2 Enlarged view of point B.

[0021] Figure 5 This is a sectional view of the three-dimensional structure of the screw, guide rod, rotating ring and other components of the present invention.

[0022] Figure 6 It is a sectional view of the three-dimensional structure of the partition, sleeve, first telescopic plate and other components of the present invention.

[0023] Figure 7 For the present invention Figure 6 Enlarged view of point C.

[0024] Figure 8 It is a schematic diagram of the three-dimensional structure of the fixing member, the third gear, the blocking rod and other components of the present invention.

[0025] Figure 9 For the present invention Figure 8 Enlarged view of point D.

[0026] In the figure: 1_bookcase main body, 11_base, 1101_flap, 12_first electric push rod, 13_support plate, 14_connecting rod, 15_chain, 16_first gear, 1601_second gear, 17_hinge shaft, 18_screw, 19_guide rod, 110_turning circle, 111_supporting member, 2_sleeve, 21_separator, 22_telescopic member, 23_pressure spring, 24_fixed pulley, 25_pull rope, 26_first telescopic plate, 2601_second telescopic plate, 27_rotating cylinder, 28_rotating plate, 29_pressure sensor, 210_sliding plate, 211_second electric push rod, 3_fixing member, 31_third gear, 32_blocking rod, 33_drive shaft, 34_rack. Detailed implementation mode

[0027] Although the present invention may be described with respect to a particular application or industry, those skilled in the art will recognize the broader applicability of the present invention. Those of ordinary skill in the art will recognize that terms such as: above, below, upward, downward, etc. are used to describe the drawings and do not represent a limitation on the scope of the present invention defined by the appended claims. Any numerical labels such as: first or second are merely illustrative and are not intended to limit the scope of the present invention in any way.

[0028] Embodiment 1: Refer to the appendix Figure 1-2 , a multifunctional bookcase, including a base 11 as a bearing main body, a bookcase main body 1 is fixedly connected to the top wall inner side of the base 11, symmetrically distributed first electric push rods 12 are installed on the inner side of the top wall of the base 11, a support plate 13 is fixedly connected between the telescopic ends of the symmetrically distributed first electric push rods 12, anti-slip rubber is provided at the bottom of the support plate 13, and symmetrically distributed casters are provided at the bottom of the base 11 to facilitate the movement of the bookcase.

[0029] When it is necessary to move the bookcase to a designated position, the bookcase main body 1 can be directly pushed. In order to make the bookcase more stably fixed in this position, the first electric push rod 12 can be controlled to drive the support plate 13 to move downward. When the support plate 13 contacts the ground, the first electric push rod 12 is continuously controlled to drive the support plate 13 to extend downward, and the fixing member 3 will lift the whole bookcase, making the casters suspended. Therefore, the component of the bookcase in contact with the ground is now replaced by the support plate 13, and the weight of the bookcase is borne by the support plate 13. Since the bottom of the support plate 13 is flat, the bookcase will not displace and can stand stably on the ground, avoiding displacement.

[0030] In open scenarios such as bookstores and libraries, free-standing bookcases have no wall support around them, and there are the following safety hazards: when readers lean on the bookcase, the center of gravity moves too far backward, resulting in backward overturning; when children pull books from the front, the forward tilting moment causes a risk of tipping. Therefore, the bookcase needs to be equipped with an anti-overturning support mechanism to improve the two-way stability.

[0031] Reference appendix Figure 3-5 Specifically, a flap 1101 is provided on the base 11. The flap 1101 is pivotally connected to the upper rear of the base 11 through a rotating shaft. The flap 1101 rotates around the rotating shaft under manual drive and can be manually turned outwards by 0 - 90°. It has the function of a seat and provides a reading seat after being unfolded, while triggering the linkage support mechanism.

[0032] Symmetrically distributed second gears 1601 are fixedly connected to the rotating shaft and move synchronously with the rotation of the flap 1101. Symmetrically distributed hinge shafts 17 are rotatably connected to the rear wall of the base 11. Symmetrically distributed first gears 16 are fixedly connected to each hinge shaft 17, and are connected to the adjacent second gears 1601 through chains 15, with a transmission ratio of 2:1. When the flap 1101 is turned outwards by 90°, the second gear 1601 also rotates by 90°, driving the first gear 16 to rotate by 45° through the transmission ratio, and the hinge shaft 17 rotates synchronously by 45°.

[0033] Uniformly distributed guide rods 19 are provided inside the flap 1101, with chutes opened inside. Slide rings 110 are slidably connected in the chutes. The slide rings 110 do not have the freedom of rotation in the chutes but only have the freedom of linear sliding. Screws 18 are threadedly connected between adjacent slide rings 110. Symmetrically distributed connecting rods 14 are key - connected to the ends of the screws 18. The symmetrically distributed connecting rods 14 are rigidly fixed to the adjacent hinge shafts 17. The middle parts of the screws 18 are threadedly connected with support members 111. The uniformly distributed guide rods 19 are each composed of upper and lower parts and are combined into a whole through bolt fasteners, aiming to facilitate the installation of the slide rings 110.

[0034] When the user turns the flap 1101 outwards by 90° to the horizontal state for use as a seat. At this time, the rotation of the flap 1101 drives the second gear 1601 to rotate by 90° synchronously through the rotating shaft. The second gear 1601 is connected to the first gear 16 through the chain 15. Due to the transmission ratio of 2:1, the first gear 16 only rotates by 45°, driving the hinge shaft 17 to rotate synchronously by 45°. The rotation of the hinge shaft 17 pulls the screw 18 through the rigidly fixed connecting rod 14, forcing the slide ring 110 to move linearly upwards along the chute of the guide rod 19. The slide ring 110 is in a constant axial position. The screw 18 located between them drives the support member 111 in the middle to turn downwards against the ground during the movement, forming a rear support foot, expanding the grounding area behind the bookcase, and generating an anti - overturning moment. When the reader leans against the front side of the bookcase, the backward force generated is offset by the reaction force of the support foot.

[0035] When a child rummages through the books in the front of the bookcase or climbs on it, the bookcase has a tendency to tip forward due to the forward tilting moment. The forward tilting force is transmitted through the bookcase main body 1 to the support member 111. At this time, the flap 1101 is in a horizontal state as the reader is sitting on it. The support mechanism has been deployed and is in a working state. The overall center of gravity of the bookcase shifts towards the support member 111, reducing the forward tilting lever arm and the risk of forward tilting, thus providing the safety of the bookcase.

[0036] In this embodiment, the flap 1101 is unfolded to form a flip seat with a reading function. The support member 111 is driven to press down by a gear set with a transmission ratio of 2:1, expanding the grounding area and effectively offsetting the backward tilting moment caused by the reader's leaning. The synchronous center of gravity offset mechanism shortens the forward tilting lever arm and reduces the risk of tipping caused by a child rummaging. Then, the first electric push rod 12 is used to control the pressing down of the support plate 13, making the casters suspended and the plane contact the ground to improve the static stability and meet the rapid positioning requirements in an open scenario.

[0037] Refer to the appendix Figure 6-7 Children are naturally curious and like to climb. Tall furniture such as bookcases and wardrobes at home often become their "adventure targets". In libraries or schools, children may climb bookcases out of curiosity or to get books on high shelves. In some public places, such as bookstores and children's activity centers, bookcases may also become targets for children to climb, especially those that are not fixed or are poorly designed. The books, ornaments or other heavy objects placed on the bookcase may fall due to shaking or tipping, injuring the child. If a child climbs to the top of the bookcase, they may fall due to loss of balance, resulting in fractures or other serious injuries. Therefore, bookcases need to be designed with anti-climbing features to effectively reduce the risk of accidents.

[0038] Specifically, the bookcase main body 1 is internally provided with evenly distributed partition boards 21, which evenly divide the interior of the bookcase main body 1 into several compartments. Each compartment can hold a number of books. A second electric push rod 211 is installed at the bottom of the lower partition board 21. The telescopic end of the second electric push rod 211 is fixedly connected to a first telescopic plate 26. The first telescopic plate 26 slides within the lower partition board 21. A rotating cylinder 27 is rotatably connected to the first telescopic plate 26. A rotating plate 28 is fixedly connected to the rotating cylinder 27. A sliding plate 210 is slidably connected within the bookcase main body 1, which is directly below the rotating plate 28. Symmetrically distributed pressure sensors 29 are installed between the sliding plate 210 and the rotating plate 28. The pressure sensors 29 are electrically connected to the second electric push rod 211 through a control module.

[0039] When a child climbs on the lower partition 21, the weight of the child's body is applied to the rotating plate 28, causing it to press down. The rotating plate 28 is slightly flipped by the rotating cylinder 27, pressing the pressure sensor 29. When the pressure value reaches the preset threshold, the control module starts the second electric push rod 211. The second electric push rod 211 pushes the first telescopic plate 26 forward to extend the lower partition 21 outward by 5-10 cm. The protruding partition 21 destroys the child's climbing traction point, forcing him to be unable to continue to climb up. After the pressure is released, the second electric push rod 211 drives the first telescopic plate 26 to automatically retract, and the partition 21 returns to its original position.

[0040] A second telescopic plate 2601 is slidably connected to the upper partition 21, a telescopic part 22 is connected between the second telescopic plate 2601 and the upper partition 21, a pressure spring 23 is connected between the second telescopic plate 2601 and the upper partition 21, the pressure spring 23 is wound around the telescopic part 22, the inner side of the rear wall of the bookcase body 1 is rotatably connected to symmetrically distributed fixed pulleys 24, a pull rope 25 is connected between the second telescopic plate 2601 and the first telescopic plate 26, the pull rope 25 is wound around the symmetrically distributed fixed pulleys 24, and the pull rope 25 passes through the upper and lower partitions 21.

[0041] When the first telescopic plate 26 is extended forward, the first telescopic plate 26 will pull the second telescopic plate 2601 backward through the pull rope 25, causing the upper partition 21 to retract 5-10 cm, the telescopic part 22 to shrink backward, and the pressure spring 23 to be compressed. After the pressure is released, the pressure spring 23 releases elastic potential energy, pushing the second telescopic plate 2601 to reset, and the telescopic part 22 to restore its initial length. By making the lower partition 21 convex and the upper partition 21 concave in alternating states, the bookcase partition 21 is transformed into an active anti-climbing barrier, destroying the continuous fulcrum points for children to climb, thereby ensuring the safety of children and maximizing the functionality of the bookcase.

[0042] The first and second retractable plates 2601 are equipped with evenly spaced ridges, and the upper and lower shelves 21 are each provided with slots that match the ridges. When the first retractable plate 26 extends forward or the second retractable plate 2601 retracts backward, the ridges engage with the slots in the shelves 21, keeping the shelves 21 flat and ensuring the books on them remain stable. This tooth-and-groove linkage design not only prevents climbing but also prevents the risk of books toppling over due to structural deformation.

[0043] A sleeve 2 is provided on the outer side of the second electric push rod 211 , which has both dustproof and mechanical protection functions.

[0044] This embodiment achieves triple safety optimization through the dynamic partition 21 adjustment system and the tooth-groove linkage design: first, the active anti-climbing mechanism. When a child climbs the lower partition 21, the pressure triggers the partition 21 to bulge outward, destroying the continuous fulcrum, and synchronously linking the upper partition 21 to retract, forming an "alternating concave and convex" barrier to block the climbing path; second, the tooth-groove engagement design, the convex bars and the slide grooves ensure that the partition 21 remains flat when moving, preventing books from tipping over; finally, the sleeve 2 takes into account both mechanical protection and daily maintenance needs.

[0045] Example 2: Refer to the attached Figure 8-9 When the second telescopic plate 2601 retracts inward due to the anti-climbing mechanism, the effective width of the upper shelf 21 decreases, leading to the following risks: wide books, such as picture albums and large-format books, can easily fall from the upper shelf 21 due to the narrowing of the bottom support surface, shifting their center of gravity forward and causing them to tilt forward. This can injure readers below, especially in children's play areas. Therefore, it is necessary to add a linked limit mechanism to the upper shelf 21. This mechanical transmission synchronizes the triggering of the book forward stop device, dynamically expanding the book support boundary when the shelf 21 retracts, preventing wide books from tilting and sliding forward due to the reduced support surface.

[0046] Specifically, the second telescopic plate 2601 is fixed with symmetrically distributed fixing parts 3, which move synchronously with the second telescopic plate 2601. The symmetrically distributed fixing parts 3 are all fixed with racks 34, the length of which matches the contraction stroke of the partition 21. The upper part of the bookcase body 1 is rotatably connected to a transmission shaft 33, and a blocking rod 32 is fixed to the transmission shaft 33, which can rotate around the axis. The end of the transmission shaft 33 is fixed with a symmetrically distributed third gear 31, and the third gear 31 is engaged with the adjacent rack 34.

[0047] When the second telescopic plate 2601 retracts, it drives the fixing member 3 and the rack 34 backward. The rack 34 then rotates the third gear 31, which in turn pushes the transmission shaft 33 and causes the blocking rod 32 to tilt downward a certain angle, forming a front baffle covering the front third of the book. When the book tilts forward, the pressure is transmitted to the transmission shaft 33 and the side wall of the bookcase through the blocking rod 32, preventing local overload. When the second telescopic plate 2601 extends outward, the rack 34 moves forward, driving the third gear 31 in the reverse direction, causing the blocking rod 32 to tilt upward and return to its original position.

[0048] This embodiment uses the rack 34, the gear mechanical linkage and the blocking rod 32 design to dynamically build a book anti-falling barrier when the second telescopic plate 2601 is retracted, which is perfectly compatible with the original anti-climbing system.

[0049] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A bookcase with multiple functions, including a base (11) serving as a load-bearing main body, and a bookcase main body (1) fixedly connected to the base (11), characterized in that, Inside the inner side of the top wall of the base (11), symmetrically distributed first electric push rods (12) are installed. A support plate (13) is fixedly connected between the telescopic ends of the symmetrically distributed first electric push rods (12). Symmetrically distributed casters are provided at the bottom of the base (11).

2. The multifunctional bookcase according to claim 1, wherein A flap (1101) is provided on the base (11). The flap (1101) is pivotally connected to the base (11) through a rotating shaft. Symmetrically distributed second gears (1601) are fixedly connected to the rotating shaft. Symmetrically distributed hinge shafts (17) are rotatably connected to the rear wall of the base (11). Symmetrically distributed first gears (16) are fixedly connected to each hinge shaft (17). Each of the first gears (16) is connected to the adjacent second gear (1601) through a chain (15), and the transmission ratio is 2:

1.

3. The multifunctional bookcase according to claim 2, wherein, Uniformly distributed guide rods (19) are provided inside the flap (1101), and sliding grooves are opened inside. Inside the sliding grooves, rotating rings (110) are connected through keys. Screws (18) are threadedly connected between adjacent rotating rings (110). Symmetrically distributed connecting rods (14) are key-connected to the ends of the screws (18). The symmetrically distributed connecting rods (14) are rigidly fixed to the adjacent hinge shafts (17). Support members (111) are threadedly connected to the middle parts of the screws (18).

4. A multifunctional bookcase according to claim 3, characterized in that, Uniformly distributed partition boards (21) are provided inside the bookcase main body (1). A second electric push rod (211) is installed at the bottom of the lower partition board (21). The telescopic end of the second electric push rod (211) is fixedly connected to a first telescopic plate (26). The first telescopic plate (26) slides inside the lower partition board (21). A rotating cylinder (27) is rotatably connected to the first telescopic plate (26). A rotating plate (28) is fixedly connected to the rotating cylinder (27). A sliding plate (210) is slidably connected inside the bookcase main body (1). Symmetrically distributed pressure sensors (29) are installed between the sliding plate (210) and the rotating plate (28). The pressure sensors (29) are electrically connected to the second electric push rod (211) through a control module.

5. The multifunctional bookcase according to claim 4, characterized in that, A second telescopic plate (2601) is slidably connected inside the upper partition board (21). An expansion member (22) is connected between the second telescopic plate (2601) and the upper partition board (21). A compression spring (23) is connected between the second telescopic plate (2601) and the upper partition board (21). The compression spring (23) is wound around the expansion member (22). Symmetrically distributed fixed pulleys (24) are rotatably connected to the inner side of the rear wall of the bookcase main body (1). A pull rope (25) is connected between the second telescopic plate (2601) and the first telescopic plate (26). The pull rope (25) is wound around the symmetrically distributed fixed pulleys (24), and the pull rope (25) passes through the upper and lower partition boards (21).

6. The multifunctional bookcase according to claim 5, characterized in that Uniformly distributed convex strips are provided on the first telescopic plate (26) and the second telescopic plate (2601). Sliding grooves matching the convex strips are opened on the upper and lower partition boards (21).

7. The multifunctional bookcase according to claim 6, wherein, A sleeve (2) is provided outside the second electric push rod (211).

8. A multifunctional bookcase according to claim 7, characterized in that, The second telescopic plate (2601) is fixedly connected with symmetrically distributed fixing members (3), and racks (34) are fixedly connected to the symmetrically distributed fixing members (3). An upper portion inside the bookcase main body (1) is rotatably connected with a transmission shaft (33), a blocking rod (32) is fixedly connected to the transmission shaft (33), symmetrically distributed third gears (31) are fixedly connected to the ends of the transmission shaft (33), and the third gears (31) are meshed with the adjacent racks (34).

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