Frame structure and child vehicle

Abstract

A child bicycle frame structure and bicycle, wherein the frame structure comprises a handle, a front wheel pivotally connected to the handle, a rear wheel pivotally connected to the handle, a basket tube comprising two side rods and a rear rod connected to the two side rods, each of the side rods comprising opposite first and second ends, the first end being pivotally connected to the front wheel and the second end being pivotally connected to the rear wheel, a fixing seat slidingly arranged on the front wheel and used for connecting a seat support to the front wheel, and a connecting rod having one end pivotally connected to the basket tube and the other end pivotally connected to the fixing seat, wherein the front wheel is provided with a sliding rail along a longitudinal direction thereof, and the fixing seat is provided with a sliding groove matched with the sliding rail, so that the fixing seat can slide along the sliding rail. According to the frame structure and the bicycle, the structure is simple, the manufacturing cost and failure rate are low, and the folding and opening operations of the frame structure are simple and easy.

Description

Technical Field

[0001] This application relates to a frame structure and a children's vehicle including the frame structure. Background Technology

[0002] Strollers can reduce the fatigue caused by holding a baby for extended periods, improving people's comfort. Furthermore, for easy portability, strollers are usually foldable; the main frame structure can be folded and folded to reduce size and facilitate carrying.

[0003] For example, in a stroller frame folding linkage mechanism, the pivot points of the front and rear legs, the pivot point of the basket tube and the rear leg, and the locking point of the front leg of the basket tube are connected to form a triangular structure. The stability of this triangle ensures the stroller frame remains stable when open. The basket tube 400 has locking parts inside both sides for engaging the front leg, and also includes a mechanism to unlock the locking parts and disengage them from the front leg. An operating part for controlling the unlocking mechanism is located on the side of the basket tube away from the front leg. This operating part is situated at the U-shaped bottom of the basket tube, allowing the user to easily drive it to disengage the ends of the basket tubes from the front leg, thus folding the stroller frame.

[0004] The aforementioned frame folding linkage mechanism requires a locking part, an unlocking part, and an operating part, which results in a complex overall structure and increases manufacturing costs and failure rate.

[0005] For example, in a folding stroller, when folding is required from the open state, the upper push rod is rotated forward and downward to bring it closer to the push rod. Then, the push rod and upper frame rod are rotated backward and downward. The upper frame rod, side support rod, sliding sleeve, and rear bracket form a crank-slider mechanism. As the upper frame rod rotates closer to the rear bracket, it drives the upper part of the side support rod to rotate backward, and the sliding sleeve moves upward along the side support rod. The side support rod, rear bracket, basket rod, and sliding groove form another crank-slider mechanism. When the lower part of the side support rod rotates forward, it pries the basket rod to rotate, and the pin connected to the lower part of the side support rod slides forward along the sliding groove. The front bracket, rear bracket, seat rod, and basket rod form a four-bar linkage. The front part of the basket rod drives the rear part of the seat rod to rotate upward, thereby causing the front bracket and rear bracket to rotate and move closer together. The front bracket, seat rod, connecting rod, and armrest form another four-bar linkage mechanism. The rotation of the seat rod causes the armrest and connecting rod to rotate and move closer to the front bracket. The stroller is folded until all parts are fully folded.

[0006] When a folding stroller needs to be folded in the reverse position, first turn the push lever backward to switch the stroller to the open position, and then fold it according to the steps above.

[0007] The aforementioned folding strollers still suffer from structural complexity. In addition, the folding and unfolding processes are cumbersome and inconvenient. Summary of the Invention

[0008] In view of this, the purpose of this application is to provide a frame structure and a children's vehicle including the frame structure, wherein the frame structure is simple in construction, thereby reducing manufacturing costs and failure rates, and making folding and unfolding operations easier.

[0009] Therefore, according to one aspect of this application, a frame structure is provided, comprising: a rider; a front leg pivotally connected to the rider; a rear leg pivotally connected to the rider; a basket tube including two side bars and a rear bar connected to both side bars, each side bar including a first end and a second end opposite to each other, the first end being pivotally connected to the front leg and the second end being pivotally connected to the rear leg; a fixed seat slidably mounted on the front leg and used to connect a seat bracket to the front leg; a linkage rod, one end of which is pivotally connected to the basket tube and the other end of which is pivotally connected to the fixed seat, wherein the front leg is provided with a slide rail along its longitudinal direction, and the fixed seat is provided with a groove that cooperates with the slide rail, so that the fixed seat can slide along the slide rail.

[0010] According to another aspect of this application, a frame structure is provided, comprising: a rider; a front foot pivotally connected to the rider; a rear foot pivotally connected to the rider; a basket tube including two side bars and a rear bar connected to both side bars, each side bar including a first end and a second end opposite to each other, the first end being pivotally connected to the front foot and the second end being pivotally connected to the rear foot; a fixed seat slidably disposed on the front foot and used to connect a seat bracket to the front foot; a linkage rod, one end of which is pivotally connected to the basket tube and the other end of which is pivotally connected to the fixed seat, wherein the fixed seat is provided with a slider that cooperates with a sliding groove, allowing the fixed seat to slide along the sliding groove.

[0011] Preferably, the rider includes a retractable handle for unlocking the rider from the lock on the front foot.

[0012] Preferably, the rider includes a folding joint, and both the front foot and the rear foot are pivotally connected to the folding joint.

[0013] Preferably, the fixing base is provided with a connecting column for connecting the seat bracket.

[0014] Preferably, the connecting rod is a connecting iron plate.

[0015] Preferably, the driver's arm is equipped with a protective sleeve to facilitate gripping by the operator.

[0016] Preferably, the basket tube further includes a connecting seat, and the first end of the side rod of the basket tube is pivotally connected to the front foot through the connecting seat.

[0017] Preferably, the two side rods and the rear rod of the basket tube are integrally formed, so that the basket tube is U-shaped as a whole.

[0018] Preferably, the frame structure includes two front legs and two rear legs arranged symmetrically on the left and right, two fixed seats respectively connected to the two front legs, and two connecting rods respectively connected between the two front legs and the basket tube. The handlebar includes two retractable handles and two folding joints respectively connected to the two front legs.

[0019] According to another aspect of this application, a children's vehicle is provided, including the frame structure described above.

[0020] The frame structure and children's vehicle according to this application have a simple structure, low manufacturing cost and low failure rate, and the folding and unfolding operation of the frame structure is simple and easy. Attached Figure Description

[0021] The accompanying drawings are included herein to provide a further understanding of the invention and are incorporated in and form a part of this specification. The drawings illustrate embodiments of the invention and, together with the following description, serve to illustrate the concept of the invention.

[0022] In the attached diagram:

[0023] Figure 1 The diagram is based on the illustration of a children's stroller according to this application, which shows the seat engaged in a forward-facing manner;

[0024] Figure 2 The diagram is based on a child stroller according to this application, showing the seat engaged rearward.

[0025] Figure 3 The diagram is based on the stroller of this application, showing the seat section converted into a sleeping box.

[0026] Figure 4 This is a schematic diagram of the vehicle frame structure according to this application, in which the seat section has been removed;

[0027] Figure 5 It is a schematic diagram showing in detail the connection structure of the mounting base, front foot, and linkage of the frame structure according to this application;

[0028] Figure 6 This is a schematic diagram of the vehicle frame structure according to this application, showing the vehicle frame structure in an folded state;

[0029] Figure 7This is a schematic diagram of the frame structure according to the present application, which shows the frame structure in a semi-folded state;

[0030] Figure 8 This is a schematic diagram of the frame structure according to this application, showing the frame structure in a fully folded state;

[0031] Figure 9 This is a side view of the frame structure according to the present application, showing the frame structure in an folded state;

[0032] Figure 10 This is a side view of the frame structure according to the present application, showing the frame structure in a semi-folded state; and

[0033] Figure 11 This is a side view of the frame structure according to the present application, showing the frame structure in a fully folded state.

[0034] List of reference numerals in the attached diagram:

[0035] 1: Chassis Structure

[0036] 10: Driver

[0037] 12 Retractable handle, 14 Retractable joint, 16 Protective sleeve

[0038] 20: Front foot

[0039] Slide rail 22

[0040] 30: Back foot

[0041] 40: Vegetable basket tube

[0042] Side rod 42

[0043] First end 421, Second end 422, Connector 423

[0044] Rear lever 44

[0045] 50: Fixture

[0046] Slide groove 52 Connecting column 54

[0047] 60: Seat bracket

[0048] 70: Linkage rod Detailed Implementation

[0049] In the following, exemplary embodiments will be described in detail with reference to the accompanying drawings. Although this disclosure is open to various modifications and alternatives, specific embodiments thereof are shown by way of example in the drawings. However, this disclosure should not be construed as limiting itself to the embodiments set forth herein, but rather, this disclosure is intended to cover all modifications, equivalents, and alternatives that fall within the spirit and scope of the embodiments.

[0050] This application mainly relates to various children's vehicles, including but not limited to strollers and fan-shaped strollers. The children's vehicles according to this application can be easily folded and unfolded, and have a simple structure.

[0051] The following detailed description of the children's vehicle of this application, particularly the frame structure 1 of the children's vehicle, is provided with reference to the accompanying drawings. First, refer to... Figures 1-3 An explanation is provided, in which Figure 1 The diagram is based on the illustration of a children's stroller according to this application, which shows the seat engaged in a forward-facing manner; Figure 2 The diagram is based on a child stroller according to this application, showing the seat engaged rearward. Figure 3 This is a schematic diagram of a children's stroller according to this application, showing the seat section converted into a sleeping box. The frame structure 1 of this application mainly includes a handlebar 10, front legs 20, rear legs 30, and a basket tube 40. The handlebar 10 can be used as a handle to push the stroller. Therefore, according to a preferred embodiment of this application, the handlebar 10 is provided with a protective sleeve 16 for easy gripping by the stroller operator. The handlebar 10 also includes a retractable handle 12 and a folding joint 14, which pivotally connects the handlebar 10 and the front legs 20. By pulling the retractable handle 12, the lock between the handlebar 10 and the front legs 20 can be unlocked, allowing the folding joint 14 to fold, so that the rear legs 30 fold relative to the front legs 20.

[0052] Both the front foot 20 and the rear foot 30 are pivotally connected to the rider 10 and form a V-shape when open. The basket tube 40 includes two side bars 42 and a rear bar 44 connected to both side bars 42. The two side bars 42 and the rear bar 44 are respectively located on the left, right, and rear sides of the frame structure, thus the basket tube 40 is generally U-shaped. A storage basket (not shown) can be attached to the basket tube 40 for easy carrying of children's items. Viewed from the side, for example... Figure 1Viewed from the right, one side rod 42 of the basket tube 40 includes a first end 421 and a second end 422. The first end 421 is pivotally connected to the front leg 20, and the second end 422 is pivotally connected to the rear leg 30. Similarly, the other side rod 42 of the basket tube 40 also includes a first end 421 and a second end 422 pivotally connected to the front leg 20 and the rear leg 30, respectively. Thus, both ends of the rear rod 44 of the basket tube 40 are pivotally connected to the rear leg 30. According to a preferred embodiment of this application, the two side rods 42 and the rear rod 44 of the basket tube 40 are integrally formed, so that the basket tube 40 is U-shaped overall. The basket tube 40 also includes a connecting seat 423, through which the first ends 421 of the two side rods 42 of the basket tube 40 are pivotally connected to the front leg 20.

[0053] The frame structure 1 according to this application also includes a fixing seat 50, which is slidably mounted on the front leg 20, that is, the fixing seat 50 can slide up and down along the front leg 20. The fixing seat 50 is used to connect the seat bracket 60 to the front leg 20. The seat bracket 60 forms a seat part for a child to sit in, and the seat part can be, for example, as... Figure 1 and Figure 2 The image shows forward and backward engagement, and the seat can also be converted into a flat-ground sleeping box structure for use by infants. According to one embodiment of this application, the fixing seat 50 is provided with a connecting post 54 (…). Figure 5 As shown in the figure, the seat bracket 60 can be connected to the fixed seat 50 via the connecting post 54.

[0054] Additionally, the frame structure 1 of this application is also provided with a connecting rod 70. One end of the connecting rod 70 is pivotally connected to the basket tube 40, and the other end is pivotally connected to the fixed base 50. According to one embodiment of this application, the connecting rod 70 is a connecting iron plate. The connecting rod 70, the front leg 20, and the basket tube 40 form a triangular structure when the frame is open. Furthermore, the front leg 20, the basket tube 40, and the rear leg 30 also form a triangular structure when the frame is open, thereby providing stable support for the entire frame structure 1 when the frame is open.

[0055] Figure 4 The frame structure 1 according to this application is shown more clearly in the image, wherein the seat section has been removed. Please also refer to the reference [reference needed]. Figure 5 As shown, where Figure 5This is a detailed schematic diagram showing the connection structure of the fixed seat 50, front legs 20, and connecting rods 70 of the frame structure 1 according to this application. The frame structure 1 according to this application includes two symmetrically arranged front legs 20, two rear legs 30, two fixed seats 50 respectively connected to the two front legs 20, and two connecting rods 70 respectively connected between the two front legs 20 and the basket tube 40. The handlebar 10 includes two retractable handles 12 and two folding joints 14 respectively connected to the two front legs 20. The handlebar 10 can be U-shaped to form a handle for the operator to operate; alternatively, the handlebar 10 can form two handles respectively connected to the two retractable handles 12 and the two folding joints 14.

[0056] According to this application, a slide rail 22 is provided along the longitudinal direction of the front foot 20, and a groove 52 is provided inside the fixing base 50 to cooperate with the slide rail 22. In this way, the fixing base 50 can slide up and down within a certain range along the front foot 22 through the cooperation of the slide rail 22 and the groove 52. According to another embodiment of this application, a groove is provided along the longitudinal direction of the front foot 20, and a slider is provided inside the fixing base 50 to cooperate with it. Similarly, the fixing base 50 can also slide up and down within a certain range along the front foot 20 through the cooperation of the slider and the groove.

[0057] The following is for reference Figures 6-8 Describe the folding process of the frame structure 1 according to this application, wherein Figure 6 This is a schematic diagram of the frame structure 1 according to the present application, showing the frame structure 1 in an folded state; Figure 7 This is a schematic diagram of the frame structure 1 according to the present application, which shows the frame structure 1 in a semi-folded state; Figure 8 This is a schematic diagram of the frame structure 1 according to this application, showing the frame structure 1 in a fully folded state. When folding begins, the folding handle 12 is operated to unlock the rider 10 and the front foot 20, causing the folding joint 14 to bend. As the folding joint 14 bends further, the rear foot 30 begins to fold relative to the front foot 20. At this time, the fixing seat 50 begins to slide down along the slide rail 22 along the front foot 20, and the linkage 70 and the basket tube 40 pivot accordingly, finally fully folding the front foot 20 and the rear foot 30.

[0058] Figures 9-11 The folding process of the frame structure 1 according to this application is shown in a side view. Wherein... Figure 9 As shown, in the open state of the frame structure 1, a triangular structure is formed by the connecting rod 70, the front leg 20, and the basket tube 40. Furthermore, a triangular structure is also formed by the front leg 20, the basket tube 40, and the rear leg 30, thereby ensuring the stability of the frame structure 1 in the open state. Figure 10 and Figure 11As shown, during folding, the triangular structure formed by the front foot 20, the basket tube 40, and the rear foot 30 begins to deform as the folding joint 14 begins to bend. At this time, the two parts of the folding joint 14 that bend together, the front foot 20, and the rear foot 30 form a four-bar linkage structure. The rider 10 is further pressed, causing the four-bar linkage structure to deform further, and finally the front foot 20 and the rear foot 30 are completely folded.

[0059] Specifically, according to the frame structure 1 of this application, in addition to the folding at the folding joint 14, the fixed seat 50 also slides down along the slide rail 22 of the front leg 20, and drives the linkage 70 and the basket tube 40 to pivot and fold. Therefore, compared with the case where folding can only be performed at the folding joint 14, the distance between the front leg 20 and the rear leg 30 can be further reduced, making the folding more complete, and thus the volume after folding can be further reduced.

[0060] The frame structure 1 and the children's vehicle according to this application have a simple structure, low manufacturing cost and low failure rate, and the folding and unfolding operation of the frame structure is simple and easy.

[0061] Since the features of the invention can be embodied in various forms without departing from the nature of the invention, it should also be understood that the above embodiments are not limited to any of the details described above, unless otherwise stated, and should be broadly interpreted as falling within the scope defined by the appended claims. Therefore, all modifications and alterations falling within the scope and limits of the claims or equivalents thereof should be covered by the appended claims.

Claims

1. A frame structure (1), comprising: Drivers (10); The front foot (20) is pivotally connected to the rider (10); The rear foot (30) is pivotally connected to the rider (10); The basket tube (40) includes two side rods (42) and a rear rod (44) connected to both side rods (42). Each side rod (42) includes a first end (421) and a second end (422) opposite to each other. The first end (421) is pivotally connected to the front leg (20), and the second end (422) is pivotally connected to the rear leg (30). A fixed base (50) is slidably mounted on the front leg (20) and is used to connect the seat bracket (60) to the front leg (20); The linkage (70) has one end pivotally connected to the basket tube (40) and the other end pivotally connected to the fixing seat (50). The front foot (20) is provided with a slide rail (22) along its longitudinal direction, and the fixed base (50) is provided with a slide groove (52) that mates with the slide rail (22), so that the fixed base (50) can slide along the slide rail (22); and Specifically, in the open state of the frame structure, as well as in the initial and final folding states of the frame structure, the linkage, the front leg, and the basket tube all form a triangular structure.

2. A frame structure (1), comprising: Drivers (10); The front foot (20) is pivotally connected to the rider (10); The rear foot (30) is pivotally connected to the rider (10); The basket tube (40) includes two side rods (42) and a rear rod (44) connected to both side rods (42). Each side rod (42) includes a first end (421) and a second end (422) opposite to each other. The first end (421) is pivotally connected to the front leg (20), and the second end (422) is pivotally connected to the rear leg (30). A fixed base (50) is slidably mounted on the front leg (20) and is used to connect the seat bracket (60) to the front leg (20); The linkage (70) has one end pivotally connected to the basket tube (40) and the other end pivotally connected to the fixing seat (50). The front foot (20) has a groove along its longitudinal direction, and the fixed base (50) has a slider that cooperates with the groove, so that the fixed base (50) can slide along the groove. Specifically, in the open state of the frame structure, as well as in the initial and final folding states of the frame structure, the linkage, the front leg, and the basket tube all form a triangular structure.

3. The frame structure (1) as described in claim 1 or 2, wherein, The rider (10) includes a retractable handle (12) for unlocking the rider (10) from the lock on the front foot (20).

4. The frame structure (1) as described in claim 1 or 2, wherein, The rider (10) includes a folding joint (14), to which both the front foot (20) and the rear foot (30) are pivotally connected.

5. The frame structure (1) as described in claim 1 or 2, wherein, The fixed base (50) is provided with a connecting post (54) for connecting the seat bracket (60).

6. The frame structure (1) as described in claim 1 or 2, wherein, The connecting rod (70) is a connecting iron plate.

7. The frame structure (1) as described in claim 1 or 2, wherein, The driver (10) is equipped with a protective sleeve (16) for easy gripping by the operator.

8. The frame structure (1) as described in claim 1 or 2, wherein, The basket tube (40) also includes a connecting seat (423), and the first end (421) of the side rod (42) is pivotally connected to the front leg (20) through the connecting seat (423).

9. The frame structure (1) as described in claim 1 or 2, wherein, The two side rods (42) and the rear rod (44) of the basket tube (40) are integrally formed, so that the basket tube (40) is U-shaped as a whole.

10. The frame structure (1) as described in claim 1 or 2, wherein, The frame structure (1) includes two front legs (20) and two rear legs (30) arranged symmetrically on the left and right, two fixed seats (50) respectively connected to the two front legs (20), and two connecting rods (70) respectively connected between the two front legs (20) and the basket tube (40). The handlebar (10) includes two retractable handles (12) and two folding joints (14) respectively connected to the two front legs (20).

11. A children's vehicle, comprising a frame structure (1) according to any one of claims 1-10.

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