Library bookmobile

Abstract

This utility model discloses a library lending cart, including a frame and a cart bed fixedly connected inside the frame. A transmission rod is movably connected to the inside of the cart bed via bearings. A support plate is fixedly connected to the surface of the transmission rod, and a connector is fixedly connected to the top of the support plate. Books are inserted into the inner side of the connector. The support plate can tilt and swing the connector around the transmission rod as an axis. A transmission structure is provided on the left side of the frame, which can control the rotation of a shaft. The transmission structure includes a pedal movably connected to the left side of the frame via a pin. This utility model avoids page compression and bending caused by traditional stacking by using a vertical connector to insert books, reducing the damage rate. The tilting and swinging design arranges books in a stepped pattern, with exposed spine labels, facilitating quick identification of type and quantity by administrators. Furthermore, the linkage mechanism between the transmission rod and the support plate allows for flexible switching between book storage and display states.

Description

Technical Field

[0001] This utility model relates to the field of library equipment technology, specifically to a library borrowing vehicle. Background Technology

[0002] Library carts are used to organize, transport returned or unshelved books. They are a common tool in the daily operation of libraries, and are mostly made of metal or plastic. They have a large capacity and are easy to move.

[0003] For example, the patent application number published on the China Patent Network is 202323424986.9, and the patent name is: A library borrowing cart, including a base plate, four silent wheels are arranged under the base plate, each silent wheel is connected to one end of two connecting plates, the other end of the connecting plates is connected to the base plate, a brake pad is provided between the two connecting plates, two support rods are provided above the base plate, and the support rods are respectively provided with a storage area, a book frame, a scanning table, and a smart screen from bottom to top. A scanner is provided below the smart screen, and a drive rod is provided at the upper right end of the support rods. This utility model allows borrowing books directly on the borrowing cart without having to go to the work station for registration. At the same time, a braking device is provided to prevent the borrowing cart from moving when people leave.

[0004] However, existing library lending vehicles mainly rely on the truck bed to store books. When books are directly stacked inside the truck bed, the pages are easily squeezed and bent. Moreover, it is not convenient for users to observe and control the total number and types of books borrowed.

[0005] Therefore, the library's mobile lending vehicle needs to be redesigned and modified. Utility Model Content

[0006] To address the problems mentioned in the background art, the purpose of this utility model is to provide a library lending vehicle that has the advantages of protecting books and facilitating browsing. It solves the problem that existing library lending vehicles mainly rely on the truck bed to store books, and when books are directly stacked inside the truck bed, the pages are easily squeezed and bent, and it is not convenient for users to observe and grasp the total amount and types of books borrowed.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a library borrowing vehicle, including a frame;

[0008] A cargo bed that is fixedly connected inside the vehicle frame;

[0009] The inside of the truck bed is movably connected to a transmission rod via bearings. A bearing plate is fixedly connected to the surface of the transmission rod. A connector is fixedly connected to the top of the bearing plate. Books are inserted into the inner side of the connector. The bearing plate can carry the connector and tilt and swing around the transmission rod as the axis. A transmission structure is provided on the left side of the frame. The transmission structure can control the rotation of the axle.

[0010] As a preferred embodiment of this utility model, the transmission structure includes a pedal movably connected to the left side of the frame via a pin. Connecting blocks are fixedly connected to both sides of the bottom of the pedal. A crank is movably connected to the outer side of the connecting blocks via a pin. The outer end of the transmission rod extends through to the outer side of the frame and is fixedly connected to a rocker arm. The side of the rocker arm away from the transmission rod is movably connected to the crank via a pin.

[0011] As a preferred embodiment of this utility model, a spring plate is fixedly connected to the bottom of the pedal, and the side of the spring plate away from the pedal contacts the surface of the frame, and the spring plate is elastic.

[0012] As a preferred embodiment of this utility model, handles are provided on both sides of the surface of the transmission rod, and a gripping bar is provided on the side of the handle away from the transmission rod.

[0013] As a preferred embodiment of this utility model, both ends of the transmission rod located on the outer side of the frame are threaded, and the handle is threadedly connected to the transmission rod. When the transmission rod rotates, the grip bar, which is restricted by the user's hand, limits the handle and causes it to move inward through the rotating thread.

[0014] In a preferred embodiment of this invention, a movable block is fixedly connected to the end of the handle away from the transmission rod, and the gripping rod is inserted into the movable block and slidably connected to the movable block.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] 1. This utility model uses a vertical insertion rack to insert books, avoiding the squeezing and bending of pages caused by traditional stacking, thus reducing the damage rate. The tilting and swinging design arranges the books in a stepped manner, with the spine labels exposed, making it easy for administrators to quickly identify the type and quantity. Moreover, the linkage mechanism between the transmission rod and the support plate enables flexible switching between the book storage state and the display state.

[0017] 2. This utility model converts the pressure of the pedal into the rotational torque of the transmission rod through crank transmission, reducing the intensity of manual operation. The rigid connection between the swing arm and the transmission rod ensures that the tilt angle is controllable and prevents books from slipping.

[0018] 3. This utility model stores elastic potential energy through the deformation of the spring plate, and quickly returns to the initial position after the pedal is released, which improves the operating efficiency. Moreover, the elastic material absorbs the impact of stepping and reduces mechanical fatigue.

[0019] 4. This utility model features handles on both sides of the transmission rod, with a gripping rod at the end of the handle. The gripping rod is ergonomic, making it easy for users to push and pull the borrowing cart. The handles serve as both a pushcart gripping component and a locking component of the transmission rod via a threaded connection.

[0020] 5. This utility model generates axial force when the transmission rod rotates through the threaded pair, causing the handle to tighten towards the axis, enhancing the stability of the plug-in frame. When the user holds the grip bar, the threaded locking is automatically triggered, adapting to the load-bearing requirements of different book weights.

[0021] 6. This utility model avoids the gripping rod affecting the sliding displacement of the handle by using a sliding connection, and ensures that the gripping rod and the handle are connected while limiting the position of the handle. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the left-side structure of this utility model;

[0024] Figure 3 This is a schematic diagram showing the unfolded structure of this utility model;

[0025] Figure 4 This utility model Figure 3 Enlarged structural diagram at point A in the middle.

[0026] In the diagram: 1. Frame; 2. Cargo bed; 3. Drive rod; 4. Loading plate; 5. Connector; 6. Books for borrowing; 7. Transmission structure; 8. Pedal; 9. Connecting block; 10. Crank; 11. Rocker arm; 12. Spring plate; 13. Handlebar; 14. Grip bar; 15. Movable block. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] like Figures 1 to 4 As shown, the library borrowing vehicle provided by this utility model includes a frame 1;

[0029] The cargo bed 2 is fixedly connected inside the frame 1;

[0030] Inside the cargo box 2, a transmission rod 3 is movably connected via bearings. A bearing plate 4 is fixedly connected to the surface of the transmission rod 3. A connector 5 is fixedly connected to the top of the bearing plate 4. A borrowing book 6 is inserted into the inner side of the connector 5. The bearing plate 4 can carry the connector 5 and tilt and swing around the transmission rod 3 as the axis. A transmission structure 7 is provided on the left side of the frame 1. The transmission structure 7 can control the rotation of the axle.

[0031] refer to Figure 3 The transmission structure 7 includes a pedal 8 movably connected to the left side of the frame 1 via a pin. Connecting blocks 9 are fixedly connected to both sides of the bottom of the pedal 8. A crank 10 is movably connected to the outer side of the connecting blocks 9 via a pin. The outer end of the transmission rod 3 extends through to the outer side of the frame 1 and is fixedly connected to a rocker arm 11. The side of the rocker arm 11 away from the transmission rod 3 is movably connected to the crank 10 via a pin.

[0032] As a technical optimization of this utility model, the downward pressure of the pedal 8 is converted into the rotational torque of the transmission rod 3 through the crank 10, which reduces the intensity of manual operation. The rigid connection between the swing arm 11 and the transmission rod 3 ensures that the tilt angle is controllable and prevents the books from slipping.

[0033] refer to Figure 2 A spring plate 12 is fixedly connected to the bottom of the pedal 8. The side of the spring plate 12 away from the pedal 8 contacts the surface of the frame 1. The spring plate 12 is elastic.

[0034] As a technical optimization of this utility model, the elastic plate 12 stores elastic potential energy through deformation, and quickly returns to the initial position after releasing the pedal 8, thereby improving operating efficiency. Moreover, the elastic material absorbs the impact of stepping and reduces mechanical fatigue.

[0035] refer to Figure 3 Handles 13 are fitted on both sides of the surface of the transmission rod 3, and a gripping bar 14 is provided on the side of the handle 13 away from the transmission rod 3.

[0036] As a technical optimization of this utility model, handles 13 are sleeved on both sides of the transmission rod 3, and a gripping rod 14 is provided at the end of the handle 13. The gripping rod 14 is ergonomic and makes it easy for users to push and pull the borrowing cart. The handle 13 serves as a cart gripping component and also participates in locking the transmission rod 3 through a threaded connection.

[0037] refer to Figure 3 The transmission rod 3 has threads at both ends located on the outside of the frame 1. The handle 13 is threaded to the transmission rod 3. When the transmission rod 3 rotates, the grip bar 14, which is restricted by the user's hand, limits the handle 13 so that it moves inward through the rotating threads.

[0038] As a technical optimization of this utility model, the threaded pair generates axial force when the transmission rod 3 rotates, causing the handle 13 to tighten towards the axis, enhancing the stability of the plug-in frame 5. When the user holds the gripping rod 14, the threaded locking is automatically triggered, adapting to the load-bearing requirements of different book weights.

[0039] refer to Figure 4 A movable block 15 is fixedly connected to the end of the handle 13 away from the transmission rod 3, and the gripping rod 14 is inserted into the interior of the movable block 15 and slidably connected to the movable block 15.

[0040] As a technical optimization of this utility model, the sliding connection avoids the gripping rod 14 from affecting the sliding displacement of the handle 13, and ensures that the gripping rod 14 and the handle 13 are connected while limiting the position of the handle 13.

[0041] The working principle and usage process of this utility model are as follows: Books 6 are vertically inserted into the insertion frame 5 according to their categories and placed horizontally in the cart 2 by the support plate 4. The handles 13 on both sides of the transmission rod 3 are fixed in position by threaded connection, and the gripping rod 14 is in an extended state to facilitate the movement of the cart. When a book 6 needs to be borrowed, the user steps on the left pedal 8, the elastic plate 12 deforms and stores the reset potential energy, the pedal 8 moves down in conjunction with the connecting blocks 9 on both sides, and drives the swing rod 11 to make a circular motion through the transmission mechanism of the crank 10. The swing rod 11 drives the transmission rod 3 to rotate around the bearing axis, and the support plate 4 tilts and swings at a 15-30 degree angle with the transmission rod 3 as the axis, so that the insertion frame 5 flips to the outside of the cart 2. When the transmission rod 3 rotates, the threaded section and the handle 13 produce a helical pair motion. The gripping rod 14 is held by the user and forms rotational resistance, forcing the handle 13 to move inward along the thread. When the inner side of the handle 13 is in close contact with the surface of the frame 1, the effect of squeezing and positioning the flipped insertion frame 5 is achieved.

[0042] In summary, this library lending vehicle uses a vertical insertion rack 5 to hold books, avoiding the squeezing and bending of pages caused by traditional stacking, thus reducing the damage rate. The tilting and swinging design arranges the books in a stepped manner, with exposed spine labels, making it easy for administrators to quickly identify the type and quantity. Furthermore, the linkage mechanism between the transmission rod 3 and the support plate 4 enables flexible switching between the book storage and display states.

[0043] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0044] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A library lending vehicle, including the vehicle frame (1); The cargo box (2) is fixedly connected inside the frame (1); Its features are: The inside of the truck bed (2) is connected to a transmission rod (3) via a bearing. A bearing plate (4) is fixedly connected to the surface of the transmission rod (3). A connector (5) is fixedly connected to the top of the bearing plate (4). A borrowing book (6) is inserted into the inner side of the connector (5). The bearing plate (4) can carry the connector (5) to tilt and swing around the transmission rod (3) as the axis. A transmission structure (7) is provided on the left side of the frame (1). The transmission structure (7) can control the axle to rotate.

2. The library borrowing vehicle according to claim 1, characterized in that: The transmission structure (7) includes a pedal (8) movably connected to the left side of the frame (1) via a pin. Both sides of the bottom of the pedal (8) are fixedly connected to connecting blocks (9). The outer side of the connecting blocks (9) is movably connected to a crank (10) via a pin. The outer end of the transmission rod (3) extends to the outer side of the frame (1) and is fixedly connected to a rocker arm (11). The side of the rocker arm (11) away from the transmission rod (3) is movably connected to the crank (10) via a pin.

3. The library borrowing vehicle according to claim 2, characterized in that: A spring plate (12) is fixedly connected to the bottom of the pedal (8). The side of the spring plate (12) away from the pedal (8) is in contact with the surface of the frame (1). The spring plate (12) is elastic.

4. The library borrowing vehicle according to claim 2, characterized in that: Handles (13) are fitted on both sides of the surface of the transmission rod (3), and a gripping bar (14) is provided on the side of the handle (13) away from the transmission rod (3).

5. The library borrowing vehicle according to claim 4, characterized in that: The transmission rod (3) has threads at both ends located on the outside of the frame (1). The handle (13) is threaded to the transmission rod (3). When the transmission rod (3) rotates, the grip bar (14) restricted by the user's hand limits the handle (13) so that it moves inward through the rotating thread.

6. The library borrowing vehicle according to claim 5, characterized in that: The handle (13) is fixedly connected to a movable block (15) at one end away from the transmission rod (3), and the gripping rod (14) is inserted into the movable block (15) and slidably connected to the movable block (15).

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