Foldable frame structure

Abstract

A foldable frame structure comprises a base with pulleys, a supporting rod hinged to the base and a push rod, the push rod comprises a push handle, a connecting rod and a hinge mechanism, one end of the connecting rod is hinged to the base, the other end of the connecting rod is hinged to one end of the push handle through the hinge mechanism, and the other end of the push handle is hinged to the supporting rod; the hinging mechanism comprises a clamping pin and a clamping groove capable of receiving the clamping pin, the clamping pin is arranged on the push handle, and the clamping groove is formed in the connecting rod; an unlocking device and a conduction mechanism are arranged on the push handle, and the unlocking device controls connection and separation between the clamping pin and the clamping groove through the conduction mechanism; when the clamping groove is connected with the clamping pin, the push handle and the connecting rod are relatively parallel, and a triangular structure is formed among the push rod, the supporting rod and the base. When the clamping pin is separated from the clamping groove, the push handle and the connecting rod can rotate relatively, and the push rod and the supporting rod are laid on the base in a rotating and folding mode.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle frames, in particular to a foldable vehicle frame structure. Background Art

[0002] At present, many people like to take their pets with them when going out. When outside, some pets can be directly pulled by ropes, while some pets need to be carried in pet strollers to ensure safety. Users can take their pets for shopping, walking and other activities with pet strollers. However, existing pet strollers are generally not easy to fold. When not in use, they are not easy to store and occupy a large space. Even if some pet strollers can be folded, the parts of the stroller need to be disassembled to complete the storage when folding.

[0003] Based on the above problems, it is necessary to provide a new cart structure, which can be folded quickly and has a small volume after folding, so it is easy to store. Utility Model Content

[0004] The utility model provides a foldable frame structure, comprising a base with a pulley, a support rod and a push rod hinged on the base, the push rod comprising a push handle, a connecting rod and a hinge mechanism, one end of the connecting rod is hinged to the base, the other end is hinged to one end of the push handle through the hinge mechanism, and the other end of the push handle is hinged to the support rod; the hinge mechanism comprises a bayonet and a clamping groove that can receive the bayonet, the bayonet is arranged on the push handle, and the clamping groove is arranged on the connecting rod; an unlocking device and a transmission mechanism are arranged on the push handle, and the unlocking device controls the engagement and separation between the bayonet and the clamping groove through the transmission mechanism; wherein, when the clamping groove engages with the bayonet, the push handle and the connecting rod are relatively parallel, and a triangular structure is formed between the push rod, the support rod and the base; when the bayonet is separated from the clamping groove, the push handle and the connecting rod can rotate relatively, and the push rod and the support rod are folded and laid on the base through rotation.

[0005] Furthermore, the unlocking device includes a shell, and a locking member and a switch member are detachably arranged inside the shell. The switch member is connected to the conduction mechanism, and the locking member limits the movement of the switch member.

[0006] Furthermore, the locking member includes a stopper and a sliding member, the stopper is fixedly connected to the sliding member, and the sliding member drives the stopper to slide relative to the housing.

[0007] Furthermore, the switch member is provided with an opening capable of accommodating at least a portion of the locking member, and when the locking member is slid, the opening can receive the stopper so that the switch member controls the latch.

[0008] Furthermore, the housing further comprises a first elastic component, the first elastic component is detachably connected to the locking component, and when the locking component is slid, the first elastic component resets the locking component.

[0009] Furthermore, the push handle has an inner wall, the inner wall is provided with a second elastic mechanism, one end of the second elastic mechanism is fixedly arranged on the inner wall, and when the bayonet moves, the bayonet will squeeze the second elastic mechanism.

[0010] Furthermore, the latch has a receiving space, and the second elastic mechanism is received in the receiving space. When the latch is controlled to be separated from the engaging groove, the second elastic mechanism drives the latch to return to its original position.

[0011] Furthermore, the push handle is a hollow tubular structure, the bayonet is arranged inside the push handle, at least a part of the bayonet is located outside the push handle, and the clamping groove is detachably connected to the connecting rod.

[0012] Furthermore, the latch and the switch member are both provided with a receiving groove, and the conducting mechanism is a steel cable, both ends of which are detachably fixed in the receiving groove.

[0013] Furthermore, it also includes a support frame, which is hinged to the base, and a connecting piece is provided between the support frame and the support rod, so that the support frame can move relative to the support rod.

[0014] Compared with the prior art, the beneficial effect of the present application is that the base, the support rod and the push rod are hingedly connected with each other, and an unlocking device is provided on the push rod, through which the frame can realize the function of folding and storing with one button. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solution of the present application, the drawings required for use in the implementation manner will be briefly introduced below. Obviously, the drawings described below are only some implementation manners of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 It is a schematic diagram of the foldable frame of the utility model;

[0017] Figure 2 It is a schematic diagram of the foldable frame of the utility model;

[0018] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0019] Figure 4 It is a schematic diagram of the push rod in the utility model;

[0020] Figure 5 It is a cross-sectional view of the push rod in the utility model;

[0021] Figure 6 It is a schematic diagram of the hinge mechanism in the utility model;

[0022] Figure 7 It is a schematic diagram of the unlocking device in the utility model;

[0023] Figure 8 It is a schematic diagram of the unlocking device in the utility model;

[0024] Fig. 9 for Figure 8 A magnified view of point B;

[0025] Fig.10 It is a schematic diagram of the foldable frame of the utility model in the unfolded state;

[0026] Fig.11 It is a schematic diagram of the foldable frame of the present invention in a folded state.

[0027] In the figure:

[0028] Base (1000); pulley (1100); support rod (2000); push rod (3000); push handle (3100); unlocking device (3200); housing (3210); first elastic member (3220); locking member (3230); stop member (3231); sliding member (3232); switch member (3240); opening (3241); conduction mechanism (3300); second elastic mechanism (3400); hinge mechanism (3500); latch (3510); accommodating space (3520); connecting rod (3600); latching groove (3610); support frame (4000); accommodating groove (4100); connecting member (4200). DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0030] Reference to "embodiment" or "implementation" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiment or implementation may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0031] In this specification, for the sake of convenience, the words and phrases indicating the orientation or positional relationship such as "middle", "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like are used to illustrate the positional relationship of the constituent elements with reference to the drawings. This is only for the convenience of describing this specification and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation of the present disclosure. The positional relationship of the constituent elements is appropriately changed according to the orientation of the constituent elements being described. Therefore, it is not limited to the words and phrases described in the specification, and can be appropriately replaced according to the circumstances.

[0032] As a preferred embodiment of the present invention, in order to enable the cart structure to be quickly folded and reduce the volume of the cart after folding for easy storage by users, the present invention provides a foldable frame structure.

[0033] See also Figure 1 As shown, the frame includes a base 1000 with a pulley 1100, and a support rod 2000 and a push rod 3000 are hinged on the base 1000. Figures 1 to 4 As shown, the push rod 3000 includes a push handle 3100, a connecting rod 3600 and a hinge mechanism 3500, one end of the connecting rod 3600 is hinged to the base 1000, the other end of the connecting rod 3600 is hinged to one end of the push handle 3100 through the hinge mechanism 3500, and the other end of the push handle 3100 is hinged to the support rod 2000.

[0034] In this embodiment, see Figures 4 to 6 As shown, the hinge mechanism 3500 includes a latch 3510 and a latching groove 3610, and the latch 3510 can be latched in the latching groove 3610, wherein the latch 3510 is arranged on the push handle 3100, and the latching groove 3610 is detachably arranged on the connecting rod 3600, and when the latching groove 3610 engages with the latch 3510, the push handle 3100 and the connecting rod 3600 form an integrated structure and form a relatively parallel state.

[0035] Furthermore, the push handle 3100 is a hollow tubular structure with an inner wall. The bayonet 3510 is disposed in the hollow structure of the push handle 3100 , but the bayonet 3510 is not completely located in the hollow structure of the push handle 3100 , but is partially located outside the push handle 3100 , and the portion outside the push handle 3100 can enter and exit the bayonet slot 3610 .

[0036] See also Figure 5 and Figure 6 As shown, the inner wall of the push handle 3100 is provided with a second elastic mechanism 3400 , and in this embodiment, the second elastic mechanism 3400 is a spring. One end of the second elastic mechanism 3400 is fixed on the inner wall of the push handle 3100 .

[0037] Furthermore, the latch 3510 has a accommodating space 3520, and the second elastic mechanism 3400 is accommodated in the accommodating space 3520. When the latch 3510 moves, the latch 3510 will squeeze the second elastic mechanism 3400. At the same time, when the latch 3510 is separated from the engaging groove 3610, the second elastic mechanism 3400 will have a tendency to drive the latch 3510 to return to its original position due to its own elastic force.

[0038] In other embodiments (not shown in the figures), the second elastic mechanism 3400 may also be other elastic structures as long as the latch 3510 can be telescoped and rebounded.

[0039] See also Figures 2 to 4 As shown, an unlocking device 3200 and a conducting mechanism 3300 are provided on the push handle 3100, and the unlocking device 3200 controls the engagement and separation between the locking pin 3510 and the locking groove 3610 through the conducting mechanism 3300, wherein the unlocking device 3200 includes a shell 3210, and a locking member 3230 and a switch member 3240 are detachably provided inside the shell 3210.

[0040] Specifically, the locking member 3230 includes a stopper 3231 and a sliding member 3232. The stopper 3231 is fixedly connected to the sliding member 3232. The sliding member 3232 drives the stopper 3231 to slide relative to the housing 3210. Figure 7 As shown, when the locking member 3230 is in a stationary state, the stopper 3231 will block the switch member 3240 to limit the movement of the switch member 3240. The switch member 3240 is provided with an opening 3241 that can accommodate at least a portion of the locking member 3230, and when the stopper 3231 is controlled to slide by the sliding member 3232, the switch member 3240 is lifted upward so that the stopper 3231 can be accommodated in the opening 3241, thereby controlling the movement of the latch 3510.

[0041] Further, see Figure 7 As shown, the housing 3210 also includes a first elastic member 3220, which is detachably connected to the locking member 3230. When the locking member 3230 is slid, the locking member 3230 will pull the first elastic member 3220. The first elastic member 3220 itself has elastic force. When the locking member 3230 is released, the first elastic member 3220 will reset the locking member 3230.

[0042] Further, see Figures 1 to 8The bayonet 3510 and the switch member 3240 are both provided with a receiving groove 4100, and the receiving groove 4100 is used to fix the two ends of the transmission mechanism 3300, so that the transmission mechanism 3300 can be connected with the bayonet 3510 and the switch member 3240, so that the switch member 3240 can control the bayonet 3510 through the transmission mechanism 3300. In this embodiment, the transmission mechanism 3300 is a steel cable. In other embodiments not shown in the figure, the transmission mechanism 3300 can also be a transmission device such as a steel wire, as long as the switch member 3240 can control the bayonet 3510 through the transmission mechanism 3300.

[0043] Further, see Figure 2 As shown, the frame further includes a support frame 4000, which is hinged to the base 1000, wherein a connector 4200 is provided between the support frame 4000 and the support rod 2000, and the connector 4200 connects the support frame 4000 and the support rod 2000, so that the support frame 4000 will not fall down, and the support frame 4000 can move relative to the support rod 2000. A curtain can be provided on the support frame 4000, and the curtain can be used for sunshade.

[0044] Specifically, the frame provided by the utility model has an unfolded state and a folded state. Fig.10 As shown, when the frame is in the unfolded state, the engaging groove 3610 engages with the engaging pin 3510 , the push handle 3100 and the connecting rod 3600 are relatively parallel, and a triangular structure is formed between the push rod 3000 , the support rod 2000 and the base 1000 .

[0045] When the frame needs to be folded to a folded state, slide the locking piece 3230 and lift the unlocking device 3200 upwards so that the stop piece 3231 is inserted into the opening 3241 of the locking piece 3230. At the same time, in the process of lifting the unlocking device 3200, the transmission mechanism 3300 is pulled to separate the latch pin 3510 and the engaging groove 3610. When the latch pin 3510 is separated from the engaging groove 3610, the push handle 3100 and the connecting rod 3600 can rotate relative to each other, and the push rod 3000 and the support rod 2000 are rotated and folded and laid on the base, thereby completing the storage.

[0046] In summary, the foldable frame structure provided by the utility model includes but is not limited to the following advantages: compactness: since the push rod and the support rod can be folded and laid on the base, the structure occupies less space in the folded state. This is very useful for storage and carrying; stability: when the card slot engages the card pin, a triangular structure is formed between the push rod, the connecting rod and the support rod. This triangular shape provides better stability, making the foldable frame more solid when in use; easy to operate: the unlocking device and the transmission mechanism control the engagement and separation between the card pin and the card slot. This allows the user to easily unfold and fold the frame without much effort.

[0047] In the broad sense of the present invention, this foldable frame structure can also be applied to the following fields: Bicycles and motorcycles: This folding structure can be used for the frames of bicycles and motorcycles. Riders can fold the bikes when needed for easy carrying or storage; Outdoor sports: In outdoor activities such as mountaineering, camping and hiking, carrying a portable folding frame can reduce the burden and improve convenience; Urban transportation: In urban environments, folding bicycles and electric scooters are very practical. They can take up less space on public transportation or in offices; Compact vehicles: This structure can also be applied to compact vehicles, such as folding scooters, electric scooters and electric bicycles.

[0048] The technical means disclosed in the solution of the utility model are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical solutions composed of any combination of the above technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model, and these improvements and modifications are also regarded as the protection scope of the utility model.

Claims

1. A foldable frame structure, comprising a base (1000) having a pulley (1100), a support rod (2000) and a push rod (3000) hinged on the base (1000), characterized in that: The push rod (3000) comprises a push handle (3100), a connecting rod (3600) and a hinge mechanism (3500), one end of the connecting rod (3600) is hinged to the base (1000), and the other end is hinged to one end of the push handle (3100) through the hinge mechanism (3500), and the other end of the push handle (3100) is hinged to the support rod (2000); The hinge mechanism (3500) comprises a bayonet (3510) and a bayonet groove (3610) capable of receiving the bayonet pin (3510), wherein the bayonet pin (3510) is arranged on the push handle (3100), and the bayonet groove (3610) is arranged on the connecting rod (3600); The push handle (3100) is provided with an unlocking device (3200) and a transmission mechanism (3300), and the unlocking device (3200) controls the engagement and separation between the latch pin (3510) and the latching groove (3610) through the transmission mechanism (3300); When the engaging groove (3610) is engaged with the engaging pin (3510), the push handle (3100) and the connecting rod (3600) are relatively parallel, and a triangular structure is formed between the push rod (3000), the support rod (2000) and the base (1000); when the engaging pin (3510) is separated from the engaging groove (3610), the push handle (3100) and the connecting rod (3600) can rotate relative to each other, and the push rod (3000) and the support rod (2000) are folded and laid on the base by rotation.

2. The foldable frame structure according to claim 1, characterized in that: The unlocking device (3200) comprises a housing (3210), wherein a locking member (3230) and a switch member (3240) are detachably arranged inside the housing (3210), wherein the switch member (3240) is connected to the conducting mechanism (3300), and the locking member (3230) limits the movement of the switch member (3240).

3. The foldable frame structure according to claim 2, characterized in that: The locking member (3230) includes a stop member (3231) and a sliding member (3232), wherein the stop member (3231) is fixedly connected to the sliding member (3232), and the sliding member (3232) drives the stop member (3231) to slide relative to the housing (3210).

4. The foldable frame structure according to claim 3, characterized in that: The switch member (3240) is provided with an opening (3241) which can accommodate at least a portion of the locking member (3230). When the locking member (3230) is slid, the opening (3241) can receive the stop member (3231) so that the switch member (3240) controls the latch (3510).

5. The foldable frame structure according to claim 4, characterized in that: The housing (3210) further comprises a first elastic member (3220) which is detachably connected to the locking member (3230). When the locking member (3230) is slid, the first elastic member (3220) resets the locking member (3230).

6. The foldable frame structure according to claim 1, characterized in that: The push handle (3100) has an inner wall, and a second elastic mechanism (3400) is arranged on the inner wall. One end of the second elastic mechanism (3400) is fixedly arranged on the inner wall. When the latch (3510) moves, the latch (3510) will squeeze the second elastic mechanism (3400).

7. The foldable frame structure according to claim 6, characterized in that: The latch (3510) has a receiving space (3520), and the second elastic mechanism (3400) is received in the receiving space (3520). When the latch (3510) is separated from the engaging groove (3610), the second elastic mechanism (3400) drives the latch (3510) to return to its original position.

8. The foldable frame structure according to claim 7, characterized in that: The push handle (3100) is a tubular structure with a hollow interior. The bayonet (3510) is disposed inside the push handle (3100), and at least a portion of the bayonet (3510) is located outside the push handle (3100). The engaging groove (3610) is detachably connected to the connecting rod (3600).

9. The foldable frame structure according to claim 2, characterized in that: The latch (3510) and the switch member (3240) are both provided with a receiving groove (4100), and the conducting mechanism (3300) is a steel cable, both ends of which are detachably fixed in the receiving groove (4100).

10. The foldable frame structure according to claim 1, characterized in that: It also includes a support frame (4000), the support frame (4000) is hinged to the base (1000), a connecting piece (4200) is provided between the support frame (4000) and the support rod (2000), and the connecting piece (4200) enables the support frame (4000) to move relative to the support rod (2000).

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