A schoolbag stand

Abstract

The utility model provides a kind of schoolbag frame, it includes the main frame connected with electric bicycle frame, power component fixed in the bottom of main frame, front support foldably connected with main frame, support shaft is fixed on the main frame above power component, the output shaft of power component is equipped with the first gear for transmission, the root of front support is equipped with the second gear and is arranged in support shaft, and the second gear is engaged with the first gear.The utility model provides a kind of schoolbag frame, uses motor to drive the opening and folding of schoolbag frame, and it is convenient and fast to operate.

Description

Technical Field

[0001] This application belongs to the field of electric bicycle accessories, specifically relating to a backpack rack. Background Technology

[0002] Electric bicycles are an environmentally friendly mode of transportation powered by electricity. Combining the appearance of a traditional bicycle with electric drive technology, they have rapidly gained popularity worldwide due to their convenience and low carbon footprint. Electric bicycles offer the flexibility of a bicycle and the power assistance of an electric motor, making them highly advantageous for urban commuting. A basket is a practical accessory installed at the front of the frame for carrying items. However, some electric bicycle models cannot accommodate baskets, such as those equipped with a front windshield, as the windshield obstructs the frame. Therefore, backpack racks have become a substitute for baskets. A backpack rack is a flat, foldable storage rack. When open, it holds items such as backpacks and shopping baskets, which are then secured with elastic cords. Existing backpack racks use torsion springs to open and close. However, after prolonged use, the springs lose elasticity, preventing folding and affecting the rack's usability. Furthermore, backpack racks are often made of metal, making them relatively heavy and difficult to operate and install. Utility Model Content

[0003] To address the problems existing in the prior art, this utility model provides a backpack rack that uses a motor to drive the opening and folding of the backpack rack, making operation convenient and quick.

[0004] The technical solution adopted in this utility model is as follows:

[0005] A backpack rack includes a main frame connected to an electric bicycle frame, a power component fixed to the bottom of the main frame, and a front bracket foldably connected to the main frame. A support shaft is fixed on the main frame above the power component. A first gear for transmission is provided on the output shaft of the power component. The root of the front bracket is sleeved on the support shaft and a second gear is arranged thereon. The second gear meshes with the first gear.

[0006] Furthermore, the main frame is L-shaped and includes a back frame and a base frame. The back frame can be, for example, a rectangular frame. The back frame includes a top rod, a bottom rod, and two side rods connected between the top rod and the bottom rod. Multiple first horizontal rods are fixedly connected between the two side rods. Multiple first vertical rods are connected between adjacent first horizontal rods, between the first horizontal rod and the top rod, and between the first horizontal rod and the bottom rod. A connecting plate is fixed between adjacent first vertical rods. The connecting plate has connecting holes that connect to connecting posts. The connecting posts pass through the front windshield of the electric bicycle (with holes in the front windshield) and connect to the frame. For example, a bolt is screwed into the connecting post and threadedly connected to the frame.

[0007] Furthermore, the base frame is C-shaped and includes a main rod parallel to the base rod and side rods connected to both sides of the main rod. The ends of the side rods are connected to the back frame, and the base frame provides support for the opened front support.

[0008] Furthermore, two reinforcing ribs are arranged at intervals between the back frame and the base frame. The reinforcing ribs have a first through hole through which the output shaft of the power supply component extends, and the support shaft is fixed to the reinforcing rib above the first through hole.

[0009] Furthermore, the power component is a bidirectional drive motor. For example, there can be two power components, which are arranged between the reinforcing ribs. The output shaft of the power component extending out of the reinforcing rib is provided with a first gear.

[0010] Furthermore, a base plate for placing power components is connected between the main rod and the base rod. Each power component corresponds to one base plate, which is formed, for example, by two mutually perpendicular flat plates.

[0011] Furthermore, a cover plate is provided above the power component, and the power component is set in the space formed by the bottom plate and the cover plate. The bottom plate and the cover plate limit and fix the power component, and at the same time protect the power component.

[0012] Furthermore, the front support is, for example, rectangular, and its length is, for example, greater than the width of the main frame. The front support includes an outer frame and multiple second crossbars connected inside the outer frame. An opening is formed at the root of the outer frame, and a sleeve connected to the outer frame is provided at the opening. The sleeve is fitted onto the support shaft, and a second gear is arranged on the outer surface of the sleeve. When the power component is energized, the output shaft of the power component rotates, driving the first gear to rotate. The first gear drives the second gear to rotate. When the second gear rotates, the front support rotates around the support shaft, opening or folding the front support. When opened, the front support abuts against the base frame, and items are placed on the front support. When not in use, the front support is rotated in the opposite direction and folded back to save space.

[0013] Furthermore, the four corners of the back frame are provided with support legs for abutting against the front windshield of the electric bicycle. Rubber pads are provided at the ends of the support legs. Preferably, the length of the upper support leg is shorter than that of the lower support leg, so that the back frame can adapt to the inclined front windshield and improve the stability of the back frame.

[0014] Furthermore, the main frame and front support are made of materials such as nylon, which are lightweight, yet possess good strength and rigidity, and are wear-resistant and corrosion-resistant.

[0015] The beneficial effects of this utility model are:

[0016] This utility model discloses a backpack rack, which includes a main frame comprising a back frame and a base frame. The back frame connects the backpack rack to the frame of an electric bicycle, while the base frame supports the front support, which is used to place items. A power component is installed at the bottom of the main frame, and the power component and the front support are transmitted through a first gear and a second gear, enabling the front support to open and close. This eliminates the drawbacks of using torsion springs and is easy to operate. The main frame and the front support are made of nylon, which is lightweight yet possesses good strength and rigidity, and is wear-resistant and corrosion-resistant. Support legs on the back frame accommodate an inclined front windshield, improving the stability of the backpack rack. Attached Figure Description

[0017] Figure 1 This is a first-view schematic diagram of a backpack rack according to the present invention.

[0018] Figure 2 This is a schematic diagram from a second perspective of a backpack rack according to the present invention.

[0019] Figure 3 This is a schematic diagram of the front support.

[0020] Figure 4 This is a schematic diagram of the main frame.

[0021] Figure 5 for Figure 4 Partial exploded view.

[0022] Figure label:

[0023] 1-Main frame, 101-Back frame, 1011-Top rod, 1012-Bottom rod, 1013-Side rod, 1014-First horizontal rod, 1015-First vertical rod, 102-Base frame, 1021-Main rod, 1022-Side rod, 2-Power component, 3-Front support, 301-Outer frame, 302-Second horizontal rod, 303-Opening, 4-Support shaft, 5-First gear, 6-Second gear, 7-Connecting plate, 8-Connecting column, 9-Reinforcing rib plate, 10-First through hole, 11-Bottom plate, 12-Cover plate, 13-Sleeve, 14-Feet. Detailed Implementation

[0024] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0025] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0028] like Figure 1-5 As shown, a backpack rack includes a main frame 1 connected to an electric bicycle frame, a power component 2 fixed to the bottom of the main frame 1, and a front bracket 3 foldably connected to the main frame 1. A support shaft 4 is fixed on the main frame 1 above the power component 2. A first gear 5 for transmission is provided on the output shaft of the power component 2. The root of the front bracket 3 is sleeved on the support shaft 4 and a second gear 6 is arranged thereon. The second gear 6 meshes with the first gear 5.

[0029] like Figure 1 , Figure 2 , Figure 4 , Figure 5As shown, the main frame 1 is L-shaped and includes a back frame 101 and a base frame 102. The back frame 101 can be a rectangular frame, for example. The back frame 101 includes a top rod 1011, a bottom rod 1012, and two side rods 1013 connected between the top rod 1011 and the bottom rod 1012. Multiple first horizontal rods 1014 are fixedly connected between the two side rods 1013. Multiple first vertical rods 1015 are connected between adjacent first horizontal rods 1014, between the first horizontal rod 1014 and the top rod 1011, and between the first horizontal rod 1014 and the base rod 1012. A connecting plate 7 is fixed between adjacent first vertical rods 1015. The connecting plate 7 has a connecting hole, which is connected to a connecting post 8. The connecting post 8 passes through the front windshield of the electric bicycle (with a hole in the front windshield) and is connected to the frame. For example, a bolt is screwed into the connecting post 8 and then threadedly connected to the frame.

[0030] like Figure 1 , Figure 2 , Figure 4 , Figure 5 As shown, the base frame 102 is C-shaped. The base frame 102 includes a main rod 1021 parallel to the base rod 1012 and side rods 1022 connected to both sides of the main rod 1021. The ends of the side rods 1022 are connected to the back frame 101. The base frame 102 provides support for the opened front support 3.

[0031] like Figure 5 As shown, two reinforcing ribs 9 are arranged at intervals between the back frame 101 and the base frame 102. The reinforcing ribs 9 have a first through hole 10 for the output shaft of the power component 2 to extend out. The support shaft 4 is fixed on the reinforcing rib 9 above the first through hole 10.

[0032] like Figure 1 , Figure 4 , Figure 5 As shown, the power component 2 is a bidirectional drive motor. For example, there can be two power components 2, which are arranged between the reinforcing ribs 9. The output shaft of the power component 2 extending out of the reinforcing ribs 9 is provided with a first gear 5.

[0033] like Figure 5 As shown, a base plate 11 for placing the power component 2 is connected between the main rod 1021 and the base rod 1012. Each power component 2 corresponds to one base plate 11, and the base plate 11 is formed, for example, by two mutually perpendicular flat plates.

[0034] like Figure 1 , Figure 4 , Figure 5 As shown, a cover plate 12 is provided above the power component 2. The power component 2 is set in the space formed by the bottom plate 11 and the cover plate 12. The bottom plate 11 and the cover plate 12 limit and fix the power component 2, and at the same time protect the power component 2.

[0035] like Figure 1 , Figure 3 As shown, the front support 3 is, for example, rectangular, and its length is, for example, greater than the width of the main frame 1. The front support 3 includes an outer frame 301 and a plurality of second crossbars 302 connected inside the outer frame 301. An opening 303 is formed at the root of the outer frame 301, and a sleeve 13 connected to the outer frame 301 is provided at the opening 303. The sleeve 13 is sleeved on the support shaft 4, and a second gear 6 is arranged on the outer surface of the sleeve 13. When the power component 2 is powered on, the output shaft of the power component 2 rotates, driving the first gear 5 to rotate. The first gear 5 drives the second gear 6 to rotate. When the second gear 6 rotates, the front support 3 rotates around the support shaft 4, opening or folding the front support 3. When opened, the front support 3 abuts against the base frame 102, and items are placed on the front support 3. When not in use, the front support 3 is rotated in the opposite direction and folded back to save space.

[0036] like Figure 1 , Figure 2 As shown, the four corners of the back frame 101 are provided with support legs 14 for abutting against the front windshield of the electric bicycle. The ends of the support legs 14 are provided with rubber pads. Preferably, the length of the upper support leg is shorter than the length of the lower support leg, so that the back frame 101 can adapt to the inclined front windshield and improve the stability of the back frame 101.

[0037] like Figure 1-5 As shown, the main frame 1 and the front support 3 are made of materials such as nylon, which are lightweight, have good strength and rigidity, and are wear-resistant and corrosion-resistant.

[0038] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A backpack rack, characterized in that, It includes a main frame (1) connected to the electric bicycle frame, a power component (2) fixed to the bottom of the main frame (1), and a front bracket (3) that can be folded and connected to the main frame (1). A support shaft (4) is fixed on the main frame (1) above the power component (2). A first gear (5) for transmission is provided on the output shaft of the power component (2). The root of the front bracket (3) is sleeved on the support shaft (4) and a second gear (6) is arranged thereon. The second gear (6) meshes with the first gear (5).

2. The backpack rack according to claim 1, characterized in that, The main frame (1) is L-shaped. The main frame (1) includes a back frame (101) and a base frame (102). The back frame (101) includes a top rod (1011), a bottom rod (1012), and two side rods (1013) connected between the top rod (1011) and the bottom rod (1012). Multiple first horizontal rods (1014) are fixedly connected between the two side rods (1013). Multiple first vertical rods (1015) are connected between adjacent first horizontal rods (1014), between the first horizontal rod (1014) and the top rod (1011), and between the first horizontal rod (1014) and the bottom rod (1012). A connecting plate (7) is fixed between adjacent first vertical rods (1015). A connecting hole is opened on the connecting plate (7), and the connecting hole is connected to the connecting column (8).

3. The backpack rack according to claim 2, characterized in that, The base frame (102) is C-shaped. The base frame (102) includes a main rod (1021) parallel to the base rod (1012) and side rods (1022) connected to both sides of the main rod (1021). The ends of the side rods (1022) are connected to the back frame (101). The base frame (102) provides support for the opened front support (3).

4. The backpack rack according to claim 2 or 3, characterized in that, Two reinforcing ribs (9) are arranged at intervals between the back frame (101) and the base frame (102). The reinforcing ribs (9) have a first through hole (10) on which the output shaft of the power supply component (2) extends. The support shaft (4) is fixed on the reinforcing ribs (9) above the first through hole (10).

5. The backpack rack according to claim 4, characterized in that, The power component (2) is a bidirectional drive motor. There are two power components (2), which are located between the reinforcing ribs (9). The first gear (5) is installed on the output shaft of the power component (2) that extends out of the reinforcing ribs (9).

6. The backpack rack according to claim 3, characterized in that, A base plate (11) for placing the power component (2) is connected between the main rod (1021) and the base rod (1012), and each power component (2) corresponds to one base plate (11).

7. The backpack rack according to claim 6, characterized in that, A cover plate (12) is provided above the power component (2), and the power component (2) is located in the space formed by the bottom plate (11) and the cover plate (12).

8. The backpack rack according to claim 1, characterized in that, The front support (3) includes an outer frame (301) and a plurality of second crossbars (302) connected inside the outer frame (301). An opening (303) is formed at the root of the outer frame (301). A sleeve (13) connected to the outer frame (301) is provided at the opening (303). The sleeve (13) is sleeved on the support shaft (4). A second gear (6) is arranged on the outer surface of the sleeve (13).

9. The backpack rack according to claim 2, characterized in that, The back frame (101) has four corner supports (14) for abutting against the front windshield of the electric bicycle. The ends of the supports (14) are equipped with rubber pads, and the length of the upper support is shorter than that of the lower support.

10. The backpack rack according to claim 1, characterized in that, The main frame (1) and the front bracket (3) are made of nylon.

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