A foldable scooter frame

Abstract

This utility model discloses a foldable scooter frame, relating to the field of scooter technology. Its key technical features include: a first frame plate and a second frame plate, connected at their tops by a hinge; an operating groove at the bottom of the first frame plate, containing a first threaded rod; a through-hole threaded channel on the side wall of the groove facing the second frame plate, threadedly connected to the first threaded rod; a first threaded hole on the side wall of the second frame plate facing the first frame plate, threadedly locked to the first threaded rod, with one end of the first threaded rod fixed to an operating component; a locking plate at the bottom of the first frame plate facing the second frame plate, with a matching locking groove at the bottom of the second frame plate containing multiple second threaded holes for connecting the second threaded rod; a through hole for the second threaded rod to pass through in the locking plate; and a control knob fixed at the other end of the second threaded rod, its diameter being larger than the through hole, abutting against the outer wall of the locking plate when locked. This utility model enables the frame to be foldable, improving portability.

Description

Technical Field

[0001] This utility model relates to the field of scooter technology, and in particular to a foldable scooter frame. Background Technology

[0002] As a human-powered street vehicle, the scooter is loved by people of all ages for its unique design and ease of use. It typically consists of core components such as handlebars, a deck, and wheels, with the rider gaining forward momentum by pushing off the ground with their legs. Today, scooters on the market are made of a variety of materials. The most common scooters are made of metals such as aluminum, titanium, and steel, making them sturdy and durable; while some scooters designed specifically for young children use plastic and are equipped with 3 to 4 wheels to increase stability and ensure children's safety.

[0003] Scooters stand out among various modes of transportation due to their simplicity, compactness, and versatility. Especially in terms of size, users generally desire scooters to be more compact for easier carrying and storage. The emergence of folding scooters perfectly meets this need. Stylish in appearance and small in size, they can be easily placed in the trunk of a car or conveniently taken on public transportation, greatly improving portability. Through their folding design, the size of the scooter is effectively reduced, thus solving the problems of storage and carrying.

[0004] However, most scooters on the market today still have shortcomings in their design. While the handlebars and frame are foldable, the frame itself is often not. This design limits the scooter's portability to some extent. For example, after use, the frame's large size may prevent users from easily placing it in a car trunk, or making it difficult to carry while taking public transportation. Therefore, there is a particular need for a scooter with a foldable frame to better meet users' needs in different scenarios. Utility Model Content

[0005] In order to solve the above-mentioned technical problems, the purpose of this utility model is to provide a foldable scooter frame, so as to realize the foldability of the frame.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A foldable scooter frame includes a first frame plate and a second frame plate. The top surfaces of the first and second frame plates are rotatably connected by a hinge. An operating groove is formed at the bottom of the first frame plate, and a first threaded rod is disposed within the operating groove. A through-hole threaded channel is formed on the side wall of the operating groove facing the second frame plate, and the first threaded channel is threadedly connected to the first threaded rod. A first threaded hole is formed on the side wall of the second frame plate facing the first frame plate, and the first threaded hole is threadedly locked to the first threaded rod. The first threaded rod is located away from the first threaded rod. An operating component is fixedly connected to one end of the hole. A locking plate is provided on the bottom of the first frame plate facing the second frame plate. A locking groove adapted to the locking plate is opened on the bottom of the second frame plate. Multiple second threaded holes are opened in the locking groove. A second threaded rod is threadedly connected to the second threaded hole. A through hole is provided on the locking plate for the second threaded rod to pass through. A control knob is fixedly connected to the other end of the second threaded rod away from the second threaded hole. The diameter of the control knob is larger than the diameter of the through hole. When the second threaded rod is locked with the second threaded hole, the control knob abuts against the outer wall of the locking plate.

[0007] Preferably, the end of the first threaded rod near the operating member is rotatably connected to a driving plate via an annular bearing. The driving plate is fixedly provided with multiple limiting rods facing the first threaded hole. The side wall of the operating groove facing the second frame plate is provided with multiple limiting channels that are adapted to the limiting rods. The end face of the second frame plate facing the first frame plate is provided with multiple limiting holes that are adapted to the limiting rods.

[0008] Preferably, the end of the limiting rod away from the driving plate is set in an arc shape.

[0009] Preferably, the inner walls of the limiting hole and the first threaded hole are coated with a wear-resistant coating.

[0010] Preferably, the operating element is a cross-shaped handle or a butterfly-shaped handle.

[0011] Preferably, the second frame plate has an internal threaded groove outside the engagement groove, and an external threaded cylinder is internally threaded into the internal threaded groove. The external threaded cylinder and the internal threaded groove form a placement cavity for placing the second threaded rod.

[0012] Preferably, the outer edge of the external threaded cylinder away from the internal threaded groove is uniformly provided with anti-slip ridges.

[0013] Preferably, the opening of the operating slot is slidably connected to a closing plate via a damping slide rail, and a sealing gasket is fitted around the outer edge of the closing plate.

[0014] This utility model has the following beneficial effects: I. Significantly Improved Scooter Portability: Most scooter frames on the market are not foldable, resulting in a large frame size after use, making it difficult for users to store in a car trunk or take on public transportation. The foldable scooter frame provided by this invention achieves foldability through a hinged connection between the top surfaces of the first and second frame plates. This significantly reduces the scooter's size when folded, allowing for easy storage in a car trunk and convenient transport on public transportation, greatly improving portability and better meeting users' needs in various scenarios.

[0015] II. Double Threaded Locking Structure: The first and second frame plates are connected by a first threaded rod and a first threaded hole, while a locking plate engages with a locking groove. A second threaded rod connects to a second threaded hole, and the control knob abuts against the outer wall of the locking plate, forming a double threaded locking structure. This design ensures a more secure and stable connection when the frame is unfolded, capable of withstanding various forces exerted by the rider and guaranteeing riding safety.

[0016] 3. Matching of Limiting Rods and Limiting Holes: Multiple limiting rods, fixedly positioned towards the first threaded hole, are adapted to the limiting channels on the side wall of the operating slot and the limiting holes on the end face of the second frame plate. During the frame unfolding and connection process, the limiting rods play a positioning and limiting role, preventing the frame from shifting during connection, and further enhancing the stability and accuracy of the frame connection.

[0017] IV. Extending Component Lifespan: The inner walls of the limiting hole and the first threaded hole are coated with a wear-resistant coating. During frequent folding and unfolding of the frame, the first threaded rod and the first threaded hole, as well as the limiting rod and the limiting hole, will continuously rub against each other. The wear-resistant coating can effectively reduce wear between components, lower the probability of component damage, thereby extending the lifespan of these components and reducing maintenance and replacement costs.

[0018] V. Rational Design of Operating Components: The operating components are designed with cross-shaped or butterfly-shaped handles, which conform to ergonomic principles and facilitate user operation. When folding or unfolding the frame, users can more easily turn the first threaded rod, improving the convenience and comfort of operation.

[0019] VI. Threaded Cylinder and Anti-slip Ribs: The second frame plate has an internal threaded groove outside the engagement slot. An external threaded cylinder is threaded into the internal threaded groove, forming a cavity between the external threaded cylinder and the internal threaded groove for storing the second threaded rod. Anti-slip ribs are evenly distributed along the outer edge of the end of the external threaded cylinder away from the internal threaded groove. When rotating the external threaded cylinder for operation, the anti-slip ribs increase the friction between the hand and the external threaded cylinder, preventing slippage and making operation smoother.

[0020] VII. Sealing Plate and Sealing Gasket: A sealing plate is slidably connected to the opening of the operating slot via a damping slide rail, and a sealing gasket is fitted around the outer edge of the sealing plate. The sealing plate can close the operating slot when not in operation, preventing dust, debris, etc., from entering the interior and protecting the components inside. The damping slide rail ensures smoother and slower sliding of the sealing plate, avoiding noise and collision damage caused by rapid sliding. The sealing gasket further enhances the sealing effect and improves the protection of the components inside the operating slot. 8. Arc-shaped design of the limiting rod and overall connection: The end of the limiting rod furthest from the drive plate is designed in an arc shape. During the frame connection process, when the limiting rod is inserted into the limiting hole, the arc shape guides it, making it easier and more accurate for the limiting rod to enter the limiting hole, reducing the difficulty of connection. At the same time, this design is also consistent with the overall double-threaded locking structure and the connection method of the limiting rod and the limiting hole, further optimizing the connection performance of the frame.

[0021] 9. Storage Cavity and Overall Frame Design: The storage cavity formed by the external threaded cylinder and the internal threaded groove not only facilitates the storage of the second threaded rod but also complements the foldable design of the frame. After the frame is folded, the second threaded rod can be properly placed in the storage cavity, preventing parts from being lost. It also makes the folded frame neater and more compact, further enhancing the scooter's portability and overall aesthetics. Attached Figure Description

[0022] 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 on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a bottom schematic diagram of the first embodiment of the present invention.

[0024] Figure 2 This is a side sectional view of the first embodiment of the present invention.

[0025] Figure 3 This is a side sectional view of the second embodiment of the present invention.

[0026] In the diagram: 1. First frame plate; 2. Second frame plate; 3. Hinge; 401. Operating slot; 402. First threaded rod; 403. Operating component; 404. Drive plate; 405. Limiting rod; 501. Engaging plate; 502. Second threaded rod; 503. Control knob; 6. External threaded cylinder; 701. Damping slide rail; 702. Enclosure plate. 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0028] First embodiment like Figures 1 to 2 As shown, a foldable scooter frame includes a first frame plate 1 and a second frame plate 2. The top surfaces of the first frame plate 1 and the second frame plate 2 are rotatably connected by a hinge 3. An operating groove 401 is formed at the bottom of the first frame plate 1, and a first threaded rod 402 is disposed within the operating groove 401. A through-flow first threaded channel is formed on the side wall of the operating groove 401 facing the second frame plate 2, and the first threaded channel is threadedly connected to the first threaded rod 402. A first threaded hole is formed on the side wall of the second frame plate 2 facing the first frame plate 1, and the first threaded hole is threadedly locked to the first threaded rod 402. The first threaded rod 402 is located away from the first threaded hole. An operating component 403 is fixedly connected to one end. A locking plate 501 is provided at the bottom of the first frame plate 1 facing the second frame plate 2. A locking groove adapted to the locking plate 501 is opened at the bottom of the second frame plate 2. Multiple second threaded holes are opened in the locking groove. A second threaded rod 502 is threadedly connected to the second threaded hole. A through hole is provided on the locking plate 501 for the second threaded rod 502 to pass through. A control knob 503 is fixedly connected to the other end of the second threaded rod 502 away from the second threaded hole. The diameter of the control knob 503 is larger than the diameter of the through hole. When the second threaded rod 502 is locked with the second threaded hole, the control knob 503 abuts against the outer wall of the locking plate 501.

[0029] like Figures 1 to 2 As shown, the top surfaces of the first frame plate 1 and the second frame plate 2 are rotatably connected by a hinge 3, which provides the first frame plate 1 and the second frame plate 2 with relative rotational freedom. When folding is required, due to this rotatable connection, the user can easily rotate the first frame plate 1 and the second frame plate 2 around the hinge 3, thereby folding the originally unfolded frame, reducing the frame's volume, and making it convenient to carry and store. After the first frame plate 1 and the second frame plate 2 are rotated and unfolded around the hinge 3 to a suitable position, the engaging plate 501 at the bottom of the first frame plate 1 will insert into the matching engaging groove at the bottom of the second frame plate 2, achieving initial positioning and ensuring that the first frame plate 1 and the second frame plate 2 are in a relatively correct positional relationship after unfolding. At the same time, the first threaded rod 402 in the operating groove 401 can initially align with the first threaded hole on the side wall of the second frame plate 2 through the first threaded channel of the operating groove 401 towards the side wall of the second frame plate 2.

[0030] The user rotates the operating component 403 (such as a cross-shaped handle or a butterfly handle) fixedly connected to one end of the first threaded rod 402. Since the first threaded channel is threadedly connected to the first threaded rod 402, and the first threaded hole is threadedly locked to the first threaded rod 402, when the operating component 403 is rotated, the first threaded rod 402 moves along the first threaded channel towards the first threaded hole, eventually screwing into the first threaded hole and locking, thus initially fixing the first frame plate 1 and the second frame plate 2 horizontally. After the first threaded rod 402 is locked, the second threaded rod 502 in the engagement groove passes through the through hole on the engagement plate 501. The user rotates the control knob 503 fixedly connected to the end of the second threaded rod 502 away from the second threaded hole (the diameter of the control knob 503 is larger than the diameter of the through hole to prevent the second threaded rod 502 from completely passing through the through hole), causing the second threaded rod 502 to screw into the second threaded hole in the engagement groove and lock. When the second threaded rod 502 is locked with the second threaded hole, the control knob 503 abuts against the outer wall of the locking plate 501, further fixing the locking plate 501 tightly in the locking groove, thereby fixing the first frame plate 1 and the second frame plate 2 in the vertical direction, enhancing the stability of the frame connection, and ensuring that the frame will not loosen or shake during use.

[0031] like Figures 1 to 2As shown, the end of the first threaded rod 402 near the operating member 403 is rotatably connected to the driving plate 404 via a ring bearing. This connection method ensures that when the first threaded rod 402 rotates, the driving plate 404 does not rotate with it, but instead moves linearly under the axial movement of the first threaded rod 402. When the user rotates the first threaded rod 402 through the operating member 403, according to the principle of threaded transmission, the first threaded rod 402 moves within the first threaded channel and the first threaded hole, thereby driving the driving plate 404 connected to it to move towards or away from the second frame plate 2. Multiple limiting rods 405 fixedly arranged on the driving plate 404 facing the first threaded hole are adapted to the limiting channel on the side wall of the operating groove 401 facing the second frame plate 2 and the limiting hole on the end face of the second frame plate 2 facing the first frame plate 1. During the movement of the driving plate 404 driven by the first threaded rod 402, the limiting rods 405 move along the limiting channel and eventually insert into the limiting hole on the second frame plate 2. The limiting channel and limiting hole provide a precise movement trajectory for the limiting rod 405, serving as a limit and guide to ensure accurate alignment of the first frame plate 1 and the second frame plate 2 during connection, preventing misalignment and thus guaranteeing the stability and precision of the frame connection. When the first threaded rod 402 is locked with the first threaded hole, the limiting rod 405 is also inserted into the limiting hole. At this time, the cooperation between the limiting rod 405 and the limiting hole further restricts the relative movement between the first frame plate 1 and the second frame plate 2, enhancing the connection strength of the frame in the horizontal direction and making the frame more stable and reliable when bearing various forces during riding.

[0032] like Figures 1 to 2 As shown, the end of the limiting rod 405 furthest from the driving plate 404 is designed in an arc shape. During the frame connection process, as the limiting rod 405 gradually approaches the limiting hole, the arc shape serves as a guide. Because the arc surface is smooth and has no sharp edges, the limiting rod 405 can enter the limiting hole more easily and smoothly, reducing the operational difficulty during connection and avoiding connection problems or component damage caused by the limiting rod 405 colliding with the edge of the limiting hole. This improves the operational efficiency and success rate of frame connection.

[0033] During the frequent folding and unfolding of the frame, the first threaded rod 402 continuously rotates and moves within the first threaded hole, and the limiting rod 405 repeatedly inserts and withdraws from the limiting hole. This causes friction between the inner walls of the first threaded hole and the limiting hole and their corresponding components. The wear-resistant coating applied to the inner walls of the limiting hole and the first threaded hole has excellent wear resistance, effectively reducing wear between components, lowering the probability of component damage due to long-term friction, thereby extending the service life of these components, reducing maintenance and replacement costs, and ensuring the long-term stable use of the frame. Figures 1 to 2As shown, the operating component 403 is designed with either a cross-shaped handle or a butterfly handle, both of which are based on ergonomic principles. The shape of the cross-shaped or butterfly handle better fits the user's palm, increasing the contact area between the hand and the operating component 403, allowing the user to apply greater force when turning the first threaded rod 402, making operation easier and less strenuous. At the same time, this design conforms to people's operating habits, improving the convenience and comfort of operation, and facilitating users to quickly and accurately fold and unfold the frame in various environments.

[0034] Second embodiment like Figure 3 As shown, the second frame plate 2 has an internal threaded groove outside the engagement groove. The external threaded cylinder 6 is threadedly connected to the internal threaded groove to form a storage cavity. In daily use or in the folded state, when the second threaded rod 502 is not needed for frame fixation, it can be placed in this storage cavity. This serves two purposes: firstly, it allows for the storage of the second threaded rod 502, preventing it from being lost due to careless placement and ensuring the integrity of all frame components; secondly, the storage cavity provides some protection for the second threaded rod 502, preventing damage from external impacts or scratches and extending its service life. When the second threaded rod 502 is needed for frame fixation, its relatively fixed and easily identifiable location within the storage cavity allows the user to quickly remove it and install it into the second threaded hole of the engagement groove, improving operational convenience and efficiency. Simultaneously, this design makes the overall frame structure more compact and the layout of components more rational during assembly.

[0035] like Figure 3 As shown, the outer edge of the external threaded cylinder 6, away from the internal threaded groove, is uniformly provided with anti-slip ridges. When the user needs to rotate the external threaded cylinder 6 to achieve threaded connection or disengagement with the internal threaded groove, the anti-slip ridges significantly increase the friction between the hand and the external threaded cylinder 6. During rotation, even if the hands are sweaty or oily, the anti-slip ridges provide sufficient friction to prevent slippage, allowing the user to rotate the external threaded cylinder 6 more easily and stably, improving the accuracy and safety of operation. The design of the anti-slip ridges conforms to ergonomic principles; they are evenly distributed on the outer edge of the external threaded cylinder 6, better conforming to the shape and texture of the fingers, making the user feel more comfortable during operation, reducing fatigue from prolonged operation, and improving the overall operating experience.

[0036] like Figure 3As shown, a sealing plate 702 is slidably connected to the opening of the operating slot 401 via a damping slide rail 701. During the use of the scooter, dust, sand, pebbles, and other debris from the external environment can easily enter the operating slot 401. The sealing plate 702 can seal the operating slot 401, effectively preventing these debris from entering, keeping the inside of the operating slot 401 clean, and preventing debris from causing wear or jamming to components such as the first threaded rod 402, the drive plate 404, and the limit rod 405 inside the operating slot 401, affecting the normal use and folding / unfolding operation of the frame. The sealing gasket fitted on the outer edge of the sealing plate 702 can further enhance the sealing effect. When encountering rainy weather or when the scooter passes through waterlogged sections, the sealing gasket can prevent water from entering the operating slot 401, avoiding rust and corrosion of the metal parts inside the operating slot 401 due to contact with water, thereby extending the service life of the frame components and ensuring the stable performance of the frame. The sealing plate 702 covers the operating slot 401, making the overall appearance of the frame cleaner and more aesthetically pleasing. Meanwhile, the design of the damping slide rail 701 provides a certain buffering effect to the closed plate 702 during sliding, preventing large impact forces from being generated due to rapid sliding, reducing the risk of accidental collision damage that may occur due to the exposure of internal components in the operating slot 401, and improving the safety of use.

[0037] The above are merely specific embodiments of this utility model, but the technical features of this utility model are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on this utility model to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of this utility model.

Claims

1. A foldable scooter frame, characterized in that: The system includes a first frame plate (1) and a second frame plate (2). The top surfaces of the first frame plate (1) and the second frame plate (2) are rotatably connected by a hinge (3). An operating groove (401) is provided at the bottom of the first frame plate (1). A first threaded rod (402) is provided in the operating groove (401). A through-hole is provided on the side wall of the operating groove (401) facing the second frame plate (2). The first threaded hole is threadedly connected to the first threaded rod (402). A first threaded hole is provided on the side wall of the second frame plate (2) facing the first frame plate (1). The first threaded hole is threadedly locked to the first threaded rod (402). The end of the first threaded rod (402) away from the first threaded hole is fixedly connected to a... The operating component (403) has a locking plate (501) at the bottom of the first frame plate (1) facing the second frame plate (2). The bottom of the second frame plate (2) has a locking groove that matches the locking plate (501). The locking groove has multiple second threaded holes. The second threaded holes are threadedly connected to second threaded rods (502). The locking plate (501) has a through hole for the second threaded rods (502) to pass through. The other end of the second threaded rod (502) away from the second threaded hole is fixedly connected to a control knob (503). The diameter of the control knob (503) is larger than the diameter of the through hole. When the second threaded rod (502) is locked with the second threaded hole, the control knob (503) abuts against the outer wall of the locking plate (501).

2. The foldable scooter frame according to claim 1, characterized in that: The first threaded rod (402) is rotatably connected to a drive plate (404) via a ring bearing at one end near the operating member (403). The drive plate (404) is fixedly provided with multiple limit rods (405) facing the first threaded hole. The operating groove (401) has multiple limit channels adapted to the limit rods (405) on the side wall facing the second frame plate (2). The second frame plate (2) has multiple limit holes on the end face facing the first frame plate (1). The limit holes are adapted to the limit rods (405).

3. The foldable scooter frame according to claim 2, characterized in that: The end of the limiting rod (405) away from the driving plate (404) is set in an arc shape.

4. A foldable scooter frame according to claim 3, characterized in that: The inner walls of the limiting hole and the first threaded hole are coated with a wear-resistant coating.

5. A foldable scooter frame according to claim 4, characterized in that: The operating component (403) is configured as a cross-shaped handle or a butterfly-shaped handle.

6. A foldable scooter frame according to claim 1, characterized in that: The second frame plate (2) has an internal threaded groove outside the engagement groove. An external threaded cylinder (6) is internally threaded into the internal threaded groove. A placement cavity for placing the second threaded rod (502) is formed between the external threaded cylinder (6) and the internal threaded groove.

7. A foldable scooter frame according to claim 6, characterized in that: The outer edge of the external threaded cylinder (6) away from the internal threaded groove is uniformly provided with anti-slip ridges.

8. A foldable scooter frame according to claim 1, characterized in that: The opening of the operating groove (401) is slidably connected to a sealing plate (702) via a damping slide rail (701), and a sealing gasket is fitted on the outer edge of the sealing plate (702).

Images