Foldable luggage frame

Abstract

The utility model discloses a foldable luggage frame. The foldable luggage frame comprises a pair of opposite frame planes, the frame plane is defined by a plurality of rigid first supporting rods; a bendable second supporting rod is hinged between the planes of the frame; the second supporting rod comprises a left rod piece, a right rod piece, a left mounting seat, a right mounting seat and a limiting button; the left mounting seat is mounted on the left rod piece; the right mounting seat is mounted on the right rod piece; the left mounting seat is hinged to the right mounting seat; the limiting button is mounted on the right mounting seat in a sliding manner through an elastic piece; the left installation base can be matched with the limiting button in a concave-convex mode, so that the left installation base and the right installation base are in a straight line and are locked, and the limiting button is further provided with a spring bolt stretching into the left installation base during locking. According to the folding frame, the frame body can be folded and stored, and the folding frame has the advantages of being stable in structure, smooth in folding and expanding process, stable, resistant to shaking, high in rigidity, good in durability and the like.

Description

A foldable bag frame Technical Field

[0001] This utility model relates to the field of bags and luggage, and more particularly to the field of bag and luggage frames. Background Technology

[0002] Currently, a type of portable luggage trailer has appeared on the market. These trailers are equipped with wheels at the bottom, with a luggage structure on top consisting of a rigid frame and fabric covering the frame. The frame is composed of multiple support rods, roughly in the shape of a horizontal cuboid, with the longest support rod parallel to the ground, a significant difference from common vertically oriented luggage. These trailers are often used for everyday shopping, camping, or as pet carriers, and feature folding storage. However, the existing trailer structure is relatively complex. Adding the folding function results in insufficient rigidity at the folding joints, making them prone to swaying and potentially deforming with prolonged use. Summary of the Invention

[0003] The purpose of this invention is to provide a foldable bag frame that is structurally stable, easy to fold and expand, not prone to swaying or shaking, and has high rigidity.

[0004] This utility model is implemented as follows: a foldable bag frame includes a pair of opposing frame planes; the frame planes are enclosed by a plurality of rigid first support rods; a bendable second support rod is hinged between the frame planes; the second support rod includes a left rod, a right rod, a left mounting base, a right mounting base, and a limit button; the left mounting base is mounted on the left rod; the right mounting base is mounted on the right rod; the left and right mounting bases are hinged; the limit button is slidably mounted on the right mounting base via an elastic element; the left mounting base can engage with the limit button in a concave-convex manner, so that the left and right mounting bases are aligned and locked, and the limit button is also provided with a locking tongue that extends into the left mounting base when locked.

[0005] Preferably, the latch has a guide ramp on the side facing the left mounting base; when the left and right mounting bases are hinged and bent, the end of the left mounting base near the right mounting base can slide up and down along the ramp.

[0006] Preferably, the limit button has an operating part and a first limit part; the first limit part and the locking tongue are steppedly distributed, and the side facing the left mounting base is in an inward arc shape; the left mounting base has a second limit part, and the side facing the first limit part is in an outward arc shape; the first limit part and the second limit part are in concave-convex cooperation when locked, and the locking tongue extends into the lower part of the second limit part.

[0007] Preferably, the locking tongue has a first rivet groove perpendicular to the sliding direction of the limit button; a rivet is fitted in the first rivet groove; the second limiting part has a second rivet groove perpendicular to the sliding direction of the limit button; a rivet is fitted in the second rivet groove; the first rivet groove and the second rivet groove are positioned opposite each other when the left mounting base and the right mounting base can be aligned and locked.

[0008] Preferably, the first support rod is enclosed by a number of connectors to form a frame plane; the connector has two connecting ends located on the same plane and a hinged end perpendicular to the two connecting parts; the left rod and the right rod are respectively connected to the hinged end of the connector.

[0009] Preferably, the two connecting ends of the connector are perpendicular to each other.

[0010] Preferably, the connector is divided into an upper connector and a lower connector; the bottom of the lower connector is provided with a roller connecting end; the roller connecting end is connected to a roller assembly.

[0011] Preferably, the roller assembly includes a roller and a roller connector connecting the roller and the roller connection end; in the roller assembly, there is at least one pair of opposing roller connectors, with one end connected to the roller and the other end connected to the roller connection end forming an obtuse angle relationship.

[0012] Preferably, it also includes a U-shaped handle, and the upper connector has an insertion hole on its inner side facing the second support rod; the bottom of the handle has a protrusion corresponding to the insertion hole.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. The frame of this utility model, through the concave-convex cooperation of the first limiting part and the second limiting part, ensures that the connecting parts are not prone to swaying and shaking, and the structure is compact. Furthermore, by configuring and equipping rivets, it can provide strong support for the rotating device when it is subjected to pressure in the longitudinal direction, preventing the mating parts from breaking or deforming in the locked state, thus making the rotating structure more rigid and the connecting parts more durable.

[0015] 2. The frame of this utility model, by setting an inclined surface, guides the second limiting part to slide up and down on the inclined surface, realizing the hinged bending or straightening of the left mounting seat relative to the right mounting seat. At the same time, when the second support rod is straightened, it can automatically lock without operating the limiting button, resulting in a smooth operation process.

[0016] 3. The frame of this utility model can be configured with a roller assembly and a removable handle, which has a simple structure and complete functions. Attached Figure Description

[0017] Figure 1 is a perspective view of the extended state of an embodiment of the present invention;

[0018] Figure 2 is a perspective view of the folded state of an embodiment of the present invention;

[0019] Figure 3 is an exploded view of the second support rod in an embodiment of this utility model;

[0020] Figure 4 is a cross-sectional view of the left and right mounting seats in the straightened state according to an embodiment of the present invention;

[0021] Figure 5 is a schematic diagram of the second limiting part sliding along the inclined surface in an embodiment of the present invention;

[0022] Figure 6 is a structural schematic diagram of the connector in an embodiment of this utility model;

[0023] Figure 7 is a structural schematic diagram of the connector in an embodiment of this utility model;

[0024] Figure 8 is a structural schematic diagram of the roller connector according to an embodiment of the present utility model;

[0025] Figure 9 is a schematic diagram of the handle structure of an embodiment of this utility model. Detailed Implementation

[0026] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship 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," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0028] As shown in Figures 1-9, this utility model discloses a foldable bag frame, including a pair of opposing frame planes 10; the frame planes 10 are enclosed by four rigid first support rods 1; and four bendable second support rods 2 are hinged between the frame planes 10. The second support rod 2 includes a left rod 21, a right rod 25, a left mounting base 22, a right mounting base 24, and a limit button 23. The left mounting base 22 is mounted on the left rod 21; the right mounting base 24 is mounted on the right rod 25; the left and right mounting bases 22 and 24 are hinged; the limit button 23 is slidably mounted on the right mounting base 24 via an elastic element; the left mounting base 22 can engage with the limit button 23, making the left and right mounting bases 22 and 24 straight and locked, and the limit button 23 also has a locking tongue 233 that extends into the left mounting base 22 when locked. After the four second support rods 2 are bent from the left and right mounting bases respectively, the two frame planes 10 can approach each other, thereby reducing the overall volume of the frame and achieving the purpose of storage. In this embodiment, the elastic element is a spring 9.

[0029] Furthermore, the latch 233 has a guiding inclined surface 235 on its side facing the left mounting base 22; when the left mounting base 22 and the right mounting base 24 are hinged and bent, the end of the left mounting base 22 near the right mounting base 24 can slide up and down along the inclined surface. The inclined surface 235 is used to guide the left mounting base 22 to bend or straighten relative to the right mounting base 24.

[0030] Furthermore, the limit button 23 is provided with an operation part 231 and a first limit part 232; the first limit part 232 and the locking tongue 233 are steppedly distributed, and the side facing the left mounting base 22 is in an inward arc shape; the left mounting base 22 is provided with a second limit part 220, and the side facing the first limit part 232 is in an outward arc shape; the first limit part 232 and the second limit part 220 are in a concave-convex fit when locked, and the locking tongue 233 extends into the lower part of the second limit part 220.

[0031] As shown in Figures 4-5, the left mounting base 22 and the right mounting base 24 are in a straightened and locked state. When hinged bending is required, the user drives the operating part 231 of the limit button, causing the limit button 23 to move away from the left mounting base 22, separating the first limit part 232 from the second limit part 220. Next, the left and right mounting bases are hinged and rotated so that the front end of the second limit part 220 reaches the inclined surface 235. After reaching this point, there is no need to operate the limit button 23 again; simply continue rotating the left and right mounting bases. The front end of the second limit part 220 will slide from above to below the inclined surface 235, achieving bending of the rotating structure. At this time, the spring 9 is in a compressed state. For straightening, only the left and right mounting bases need to be hinged and rotated. The front end of the second limit part 220 will slide from below to above the inclined surface 235, and under the elastic force of the spring 9, the first limit part 232 automatically resets, engaging and locking with the second limit part 220. That is, when the rotating structure is straight, it can automatically lock without operating the limit button 23, making it easy to operate.

[0032] Furthermore, the left mounting base 22 and the right mounting base 24 are connected by a hinge on one hand, and by the inner and outer arc surfaces of the first limiting part 232 and the second limiting part 220 engaging in a concave-convex fit, so that the rotating structure is stable and not prone to left and right wobbling when it is in the straightened and locked state.

[0033] Furthermore, the locking tongue 233 has a first rivet groove 234 perpendicular to the sliding direction of the limit button 23; a rivet 8 is fitted in the first rivet groove 234; the second limiting part 220 has a second rivet groove perpendicular to the sliding direction of the limit button 23; a rivet 8 is fitted in the second rivet groove; the first rivet groove 234 and the second rivet groove are positioned opposite each other when the left mounting base 22 and the right mounting base 24 are aligned and locked. The left mounting base 22, the right mounting base 24 and the limit button 23 are generally made of injection molded material, which is not very rigid. The rivet 8 can provide strong support for the rotating device when it is subjected to pressure in the longitudinal direction, preventing the mating parts from breaking or deforming in the locked state, thus making the rotating structure more rigid.

[0034] Furthermore, the first support rod 1 is enclosed by an equal number of connectors to form a frame plane 10; the connectors are divided into upper connectors 4 and lower connectors 5; both upper connectors 4 and lower connectors 5 have two connecting ends 11 located on the same plane and hinged ends 12 perpendicular to the two connecting parts 11; the left rod 21 and the right rod 25 are respectively connected to the hinged ends 12 of the upper and lower connectors. As shown in Figures 6-7, the two connecting ends 11 of the upper and lower connectors in this embodiment are perpendicular to each other. The frame plane is rectangular, and the frame structure in this embodiment is also cuboid, suitable for pet carriers, camping trailers, express delivery trailers, etc., with wide applications, and also convenient for wrapping and installing frame fabric.

[0035] The lower connector 5 has a roller connection end 50 at its bottom; the roller connection end 50 is connected to a roller assembly 6. The roller assembly 6 includes a roller and a roller connector 61 connecting the roller and the roller connection end 50; as shown in Figure 8 of the specification, in this embodiment, the front roller connector 61 (with the direction in which the frame is dragged as the front) has an obtuse angle between its end 611 connected to the roller and its other end 610 connected to the roller connection end 50. This structural design optimizes the force distribution when the frame is dragged, thereby reducing the pulling force required for dragging, enhancing stability, improving steering performance, and reducing the feeling of bumps.

[0036] Furthermore, it also includes a U-shaped handle 3. The upper connector 4 has an insertion hole 40 on its inner side facing the second support rod 2; the bottom of the handle 3 has a protrusion 30 corresponding to the insertion hole 40. When the frame is in the extended state, inserting the protrusions 30 on both sides of the bottom of the handle 3 into the insertion holes 40 of the upper connector allows the frame to be dragged. When the frame needs to be folded, removing the protrusions 30 from the insertion holes 40 and then dragging the limit button 23 folds the second support rod 2. The folding design occupies less space, saving more room and making it easier to store and carry.

[0037] For those skilled in the art, various other corresponding changes and modifications can be made based on the technical solutions and concepts described above, and all such changes and modifications should fall within the protection scope of the claims of this utility model.

Claims

1. A foldable bag frame, characterized in that, It includes a pair of opposing frame planes; the frame planes are enclosed by a plurality of rigid first support rods; a bendable second support rod is hinged between the frame planes; the second support rod includes a left rod, a right rod, a left mounting base, a right mounting base, and a limit button; the left mounting base is mounted on the left rod; the right mounting base is mounted on the right rod; the left and right mounting bases are hinged; the limit button is slidably mounted on the right mounting base via an elastic element; the left mounting base can engage with the limit button in a concave-convex fit, so that the left and right mounting bases are aligned and locked, and the limit button is also provided with a locking tongue that extends into the left mounting base when locked.

2. The foldable bag frame according to claim 1, characterized in that, The latch has a guide ramp on the side facing the left mounting base; when the left and right mounting bases are hinged and bent, the end of the left mounting base near the right mounting base can slide up and down along the ramp.

3. A foldable bag frame according to claim 2, characterized in that, The limit button has an operating part and a first limit part; the first limit part and the locking tongue are stepped and the first limit part is in an inward arc shape on the side facing the left mounting base; the left mounting base has a second limit part and the first limit part is in an outward arc shape on the side facing the first limit part; the first limit part and the second limit part are in a concave-convex fit when locked, and the locking tongue extends into the lower part of the second limit part.

4. A foldable bag frame according to claim 3, characterized in that, The locking tongue has a first rivet groove perpendicular to the sliding direction of the limit button; a rivet is fitted in the first rivet groove; the second limiting part has a second rivet groove perpendicular to the sliding direction of the limit button; a rivet is fitted in the second rivet groove; the first rivet groove and the second rivet groove are positioned opposite each other when the left mounting base and the right mounting base are in a straight line and locked.

5. A foldable bag frame according to claim 1, characterized in that, The first support rod is enclosed by an equal number of connectors to form a frame plane; the connector has two connecting ends located on the same plane and a hinged end perpendicular to the two connecting parts; the left rod and the right rod are respectively connected to the hinged ends of the connectors.

6. A foldable bag frame according to claim 5, characterized in that, The two connecting ends of the connector are perpendicular to each other.

7. A foldable bag frame according to claim 5, characterized in that, The connector is divided into an upper connector and a lower connector; the bottom of the lower connector is provided with a roller connection end; the roller connection end is connected to a roller assembly.

8. A foldable bag frame according to claim 7, characterized in that, The roller assembly includes a roller and a roller connector connecting the roller and the roller connection end; in the roller assembly, there is at least one pair of opposing roller connectors, the end of which is connected to the roller and the other end of which is connected to the roller connection end are at an obtuse angle.

9. A foldable bag frame according to claim 7, characterized in that, It also includes a U-shaped handle, and the upper connector has an insertion hole on its inner side facing the second support rod; the bottom of the handle has a protrusion corresponding to the insertion hole.

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