A stroller frame and pet stroller

Abstract

The utility model provides a kind of trolley frame and pet trolley, to solve the folding structure of the pet trolley frame in prior art is more complex and still occupies larger space after folding, lead to the problem of inconvenient transportation and storage.A kind of trolley frame, including chassis, the chassis includes front chassis and rear chassis, the rear end of the front chassis is rotationally connected between the front end of the rear chassis by left and right two first connecting seats;The underside of the chassis is equipped with wheel assembly.Two the first connecting seat makes chassis, left side frame and right side frame realize linkage folding, to make the volume reduce after folding and be convenient for storage and transportation, and, the front side frame is folded to left side frame and right side frame by first folding frame, the rear side frame is folded to left side frame and right side frame by second folding frame, so that trolley frame is further folded, the volume of trolley frame is reduced, more convenient transportation and storage.

Description

Technical Field

[0001] This utility model belongs to the field of transportation vehicle technology, specifically relating to a stroller frame and a pet stroller. Background Technology

[0002] Strollers are a type of transportation tool suitable for outdoor leisure and play. They can also accommodate pets, making it convenient for pet owners to take their pets outdoors. This is not only labor-saving and convenient but also safe.

[0003] Most existing pet strollers have a folding function, but the folding structure of pet strollers is relatively complex and still takes up a lot of space after folding, which leads to inconvenience in transportation and storage. Utility Model Content

[0004] In a first aspect, this utility model provides a trolley frame, comprising:

[0005] The chassis includes a front chassis and a rear chassis, with the rear end of the front chassis and the front end of the rear chassis rotatably connected by two first connecting seats on the left and right; a wheel assembly is provided on the lower side of the chassis.

[0006] The left and right frames are located on the left and right sides of the base frame, respectively. Each of the left and right frames includes an upper hinge frame, a first bracket between the hinge frame and the front base frame, a second bracket between the hinge frame and the rear base frame, and a guide frame located below the hinge frame. The two ends of each first bracket are rotatably connected to the hinge frame and the front base frame on their respective sides, and the two ends of each second bracket are rotatably connected to the hinge frame and the rear base frame on their respective sides. The two first connecting seats are slidably mounted on the two guide frames in the vertical direction.

[0007] A front side frame, located above the front side of the base frame, has its lower end rotatably connected to the front end of the front base frame, and a first folding frame is provided between the front side frame and each of the two first supports; and,

[0008] The rear side frame is located above the rear side of the base frame. The lower end of the rear side frame is connected to the rear end of the rear base frame, and a second folding frame is provided between the rear side frame and the two second supports.

[0009] The trolley frame includes a folded state and an unfolded state. When the trolley frame switches from the folded state to the unfolded state, the two first connecting seats slide downward along the two guide frames, causing the left side frame, right side frame, and bottom frame to unfold away from each other in the front-rear direction. The front side frame unfolds upward and to the front of the bottom frame via the first folding frame, and the rear side frame unfolds upward and to the rear of the bottom frame via the second folding frame. When the trolley frame switches from the unfolded state to the folded state, the two first connecting seats slide upward along the two guide frames, causing the left side frame, right side frame, and bottom frame to fold and approach the center. The front side frame folds and approaches the left and right side frames via the first folding frame, and the rear side frame folds and approaches the left and right side frames via the second folding frame.

[0010] A further embodiment: The front side frame includes two front supports, left and right, with the lower ends of the two front supports rotatably connected to the left and right sides of the front end of the front base frame, respectively; the rear side frame includes two rear supports, left and right, with the lower ends of the two rear supports rotatably connected to the left and right sides of the rear end of the rear base frame, respectively.

[0011] Based on the above technical solution: the lower ends of the two front brackets are rotatably connected to the left and right sides of the front end of the front base frame, and the lower ends of the two rear brackets are rotatably connected to the left and right sides of the rear end of the rear base frame, so that the two front brackets and the two rear brackets can be folded, thereby further reducing the volume of the trolley frame and facilitating storage and transportation.

[0012] A further embodiment: Each of the first folding frames includes a second connecting seat, a first connecting rod, and a second connecting rod. The second connecting seat is slidably disposed on the first bracket on the corresponding side. The two ends of the first connecting rod are respectively rotatably connected to the front bracket and the second connecting seat on the corresponding side. The two ends of the second connecting rod are respectively rotatably connected to the front base frame and the second connecting seat on the corresponding side.

[0013] When the trolley frame switches from a folded state to an unfolded state, the front base frame drives the second connecting seat to slide downward along the first bracket via the second link. During the downward sliding of the second connecting seat along the first bracket, the front side frame is driven to unfold upward and forward of the base frame via the first link. When the trolley frame switches from an unfolded state to a folded state, the front base frame drives the second connecting seat to slide upward along the first bracket via the second link. During the upward sliding of the second connecting seat along the first bracket, the front side frame is driven to fold and close towards the left and right side frames via the first link.

[0014] Based on the above technical solution: the two first connecting seats slide upward along the two guide frames respectively, driving the left side frame, right side frame and bottom frame to fold and move closer to the middle, so that the left side frame, right side frame and bottom frame can achieve linkage folding, and at the same time, the front bottom frame drives the second connecting seat to slide upward along the first bracket through the second link. During the process of the second connecting seat sliding upward along the first bracket, the front side frame is driven to fold and move closer to the left side frame and right side frame through the first link, thereby again achieving linkage folding of the front side frame, left side frame, right side frame and bottom frame, making the folding of the trolley frame faster and more convenient.

[0015] A further embodiment: each of the first folding frames includes a third connecting seat and a third connecting rod; each of the third connecting seats is slidably disposed on the front bracket on its corresponding side; both ends of each of the third connecting rods are rotatably connected to the first bracket and the third connecting seat on their corresponding side, respectively; each of the front brackets is provided with a first elastic positioning pin and a first limiting part, and the first elastic positioning pin is located on the upper side of the first limiting part.

[0016] When the trolley frame switches from the folded state to the unfolded state, each of the third connecting seats slides downward along its corresponding front bracket to the lower side of the first elastic positioning pin and above the first limiting part, and the third connecting seat drives the front side frame to unfold towards the front and upper side of the base frame through the third link; when the trolley frame switches from the unfolded state to the folded state, each of the third connecting seats slides upward along its corresponding front bracket, and the third connecting seat drives the front side frame to fold and close towards the left and right side frames through the third link.

[0017] Based on the above technical solution: when the third connecting seat is located between the first elastic positioning pin and the first limiting part, the vertical sliding of the third connecting seat is restricted, so the two front brackets are locked in the unfolded state, making the two front brackets more stable in the unfolded state.

[0018] A further embodiment: each of the second folding frames includes a fourth connecting seat and a fourth connecting rod; each of the fourth connecting seats is slidably disposed on the rear support on its corresponding side; both ends of each of the fourth connecting rods are rotatably connected to the second support and the fourth connecting seat on their corresponding side, respectively; each of the rear supports is provided with a second elastic positioning pin and a second limiting part, and the second elastic positioning pin is located on the upper side of the second limiting part;

[0019] When the trolley frame switches from the folded state to the unfolded state, each of the fourth connecting seats slides downward along its corresponding rear bracket to the lower side of the second elastic positioning pin and above the second limiting part, and the fourth connecting seat drives the rear side frame to unfold towards the rear and upper side of the base frame through the fourth connecting rod; when the trolley frame switches from the unfolded state to the folded state, each of the fourth connecting seats slides upward along its corresponding rear bracket, and the fourth connecting seat drives the rear side frame to fold and close towards the left and right side frames through the fourth connecting rod.

[0020] Based on the above technical solution: when the fourth connecting seat is located between the second elastic positioning pin and the second limiting part, the up and down sliding of the fourth connecting seat is restricted, so the two rear brackets are locked in the unfolded state, making the two rear brackets more stable in the unfolded state.

[0021] A further embodiment: Each of the second folding frames includes a fifth connecting seat, a fifth link and a sixth link. The fifth connecting seat is slidably mounted on the second bracket on the corresponding side. The two ends of the fifth link are rotatably connected to the rear bracket on the corresponding side and the fifth connecting seat, respectively. The two ends of the sixth link are rotatably connected to the rear base frame on the corresponding side and the fifth connecting seat, respectively.

[0022] When the trolley frame switches from a folded state to an unfolded state, the rear base frame drives the fifth connecting seat to slide downward along the second bracket via the sixth link. During the downward sliding of the fifth connecting seat along the second bracket, the fifth link drives the rear side frame to unfold upward and to the rear of the base frame. When the trolley frame switches from an unfolded state to a folded state, the rear base frame drives the fifth connecting seat to slide upward along the second bracket via the sixth link. During the upward sliding of the fifth connecting seat along the second bracket, the fifth link drives the rear side frame to fold and close towards the left and right side frames.

[0023] Based on the above technical solution: the fifth connecting seat is slidably mounted on the second bracket on its corresponding side, so that when the trolley frame switches from the unfolded state to the folded state, the rear base frame folds and closes towards the middle, and at the same time, the two second folding frames drive the two rear brackets to fold and close towards their corresponding second brackets, thereby achieving linkage folding to save folding time and making folding faster and more convenient.

[0024] A further option: a stroller frame, further comprising:

[0025] A sunshade frame, comprising a plurality of support frames, each of which is connected at both ends to two hinge frames, and the plurality of support frames are arranged from front to back and around the hinge frames.

[0026] Based on the above technical solution: when the sunshade frame is covered with a sunshade cloth, it provides a certain sunshade and rain protection effect for the objects inside the trolley frame.

[0027] A further embodiment: each of the hinged frames is provided with a support frame connecting part, and a plurality of positioning parts are provided around the support frame connecting part; both ends of each support frame are respectively located in two of the corresponding positioning parts;

[0028] Each of the support frames is rotatably connected to two support frame connecting parts at both ends, and an elastic limiting part is provided between two adjacent positioning parts. The support frame can switch between several positioning parts by rotating forward or backward; and / or, each of the support frames is plugged into and connected to its corresponding two positioning parts at both ends.

[0029] All the support frames are rotated sequentially from front to back to switch the awning frame to a folded state, and all the support frames are rotated sequentially from back to front to switch the awning frame to an unfolded state.

[0030] Based on the above technical solution, the support frame connection part makes all the support frames more stable in the folded and unfolded states.

[0031] A further embodiment: The wheel assembly includes two front wheels located at the lower ends of the two first supports and two rear wheels located at the lower ends of the two second supports.

[0032] Secondly, this utility model provides a pet stroller, characterized in that it includes a cloth cover and a stroller frame as described in any of the technical solutions in the first aspect, wherein the cloth cover is disposed on the stroller frame.

[0033] The fabric cover has a front opening on the front frame, a rear opening on the rear frame, and / or an upper opening on the upper side; the front opening, rear opening, and / or upper opening are provided with a breathable mesh or an operable curtain.

[0034] Based on the above technical solution: by covering the stroller frame with a cloth cover, a comfortable riding space is provided for the pet, and the cloth cover has a front opening, a rear opening and a top opening to make it easier for the pet to get in and out of the stroller.

[0035] The beneficial effects of this utility model are as follows:

[0036] In the first aspect of this utility model, the two first connecting seats slide upward along the two guide frames, causing the front base frame and the rear base frame to move closer to the center. The front base frame and the rear base frame also cause the left side frame and the right side frame to fold and move closer to the center. The two first connecting seats enable the base frame, the left side frame, and the right side frame to fold together in a coordinated manner, thereby reducing the volume after folding for easier storage and transportation. Furthermore, the front side frame folds and moves closer to the left side frame and the right side frame via the first folding frame, and the rear side frame folds and moves closer to the left side frame and the right side frame via the second folding frame, further folding the trolley frame and reducing its volume even more, making it more convenient for transportation and storage.

[0037] In the second aspect of this utility model, the stroller frame is covered with a cloth cover to provide a more comfortable riding environment for the pet, and the cloth cover has a front opening, a rear opening and a top opening to facilitate the pet getting in and out of the stroller. Attached Figure Description

[0038] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying 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.

[0039] Figure 1 This is a schematic diagram of the unfolded state structure from a first perspective of the first aspect of this utility model.

[0040] Figure 2 This is a schematic diagram of the unfolded state structure from a second perspective of the first aspect of this utility model.

[0041] Figure 3 This is a schematic diagram of the folded structure from a first perspective of the first aspect of this utility model.

[0042] Figure 4 This is a schematic diagram of the unfolded state structure from a first perspective of the second aspect of this utility model.

[0043] Figure 5 This is a partially enlarged structural schematic diagram of the first folding frame of this utility model.

[0044] Figure 6 This is a partially enlarged structural diagram of the second folding frame of this utility model.

[0045] Figure 7 This is a partially enlarged structural diagram of the first folding frame according to another embodiment of this utility model.

[0046] Figure 8 This is a partially enlarged structural diagram of the second folding frame according to another embodiment of this utility model.

[0047] Figure 9 This is a schematic diagram of the support frame connection part of this utility model.

[0048] Explanation of the labels in the diagram:

[0049] 1-Base frame; 101a-Front base frame; 101b-Rear base frame; 102-First connecting seat; 2-Wheel assembly; 21-Front wheel; 22-Rear wheel; 3a-Left side frame; 3b-Right side frame; 31-Articulated frame; 32-First bracket; 33-Second bracket; 34-Guide frame; 341-Limiting component; 4-Front side frame; 41-Front bracket; 5-First folding frame; 51-Second connecting seat; 52-First connecting rod; 53-Second connecting rod; 54-Third connecting seat; 5 5-Third link; 56-First elastic positioning pin; 57-First limiting part; 6-Rear side frame; 61-Rear support; 7-Second folding frame; 71-Fourth connecting seat; 72-Fourth link; 73-Second elastic positioning pin; 74-Second limiting part; 75-Fifth connecting seat; 76-Fifth link; 77-Sixth link; 8-Awning frame; 81-Support frame; 9-Support frame connecting part; 10-Positioning part; 11-Elastic limiting part; 12-Fabric cover; 13-Handrail frame. Detailed Implementation

[0050] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. It should be understood that the specific embodiments described herein are merely for explaining the present utility model and are not intended to limit the present utility model. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0051] Example 1:

[0052] like Figures 1 to 2 As shown, Embodiment 1 provides a stroller frame, characterized in that it includes:

[0053] The base frame 1 includes a front base frame 101a and a rear base frame 101b. The rear end of the front base frame 101a and the front end of the rear base frame 101b are rotatably connected by two first connecting seats 102 on the left and right. A wheel assembly 2 is rotatably provided on the lower side of the base frame 1.

[0054] Left side frame 3a and right side frame 3b are located on the left and right sides of the base frame 1, respectively. Each of the left side frame 3a and the right side frame 3b includes a hinge frame 31 at the top, a first support 32 between the hinge frame 31 and the front base frame 101a, a second support 33 between the hinge frame 31 and the rear base frame 101b, and a guide frame 34 located below the hinge frame 31. The two ends of each first support 32 are rotatably connected to the hinge frame 31 and the front base frame 101a on their respective sides, and the two ends of each second support 33 are rotatably connected to the hinge frame 31 and the rear base frame 101b on their respective sides. The two first connecting seats 102 are slidably disposed on the two guide frames 34 in the vertical direction.

[0055] A front side frame 4 is located above the front side of the base frame 1. The lower end of the front side frame 4 is rotatably connected to the front end of the front base frame 101a, and a first folding frame 5 is provided between the front side frame 4 and each of the two first supports 32; and,

[0056] The rear side frame 6 is located above the rear side of the base frame 1. The lower end of the rear side frame 6 is connected to the rear end of the rear base frame 101b, and a second folding frame 7 is provided between the rear side frame 6 and the two second supports 33.

[0057] The trolley frame includes a folded state and an unfolded state; such as Figure 1 As shown, when the trolley frame switches from the folded state to the unfolded state, the two first connecting seats 102 slide down along the two guide frames 34 respectively, causing the left side frame 3a, the right side frame 3b and the base frame 1 to unfold away in the front-back direction. The front side frame 4 unfolds to the front and above the base frame 1 through the first folding frame 5, and the rear side frame 6 unfolds to the rear and above the base frame 1 through the second folding frame 7.

[0058] like Figure 3 As shown, when the trolley frame switches from the unfolded state to the folded state, the two first connecting seats 102 slide upward along the two guide frames 34 respectively, causing the left frame 3a, the right frame 3b and the bottom frame 1 to fold and move closer to the middle. The front frame 4 folds and moves closer to the left frame 3a and the right frame 3b through the first folding frame 5, and the rear frame 6 folds and moves closer to the left frame 3a and the right frame 3b through the second folding frame 7.

[0059] Each of the first connecting seats 102 has two downward-facing slots arranged side by side. The rear end of the front base frame 101a and the front end of the rear base frame 101b are located in their corresponding slots and are rotatably connected to the first connecting seat 102.

[0060] Each of the hinge frames 31 has two downward-facing slots arranged side by side. The upper ends of the first support 32 and the second support 33 are located in their corresponding slots and are rotatably connected to the hinge frame 31.

[0061] Each guide frame 34 has a fixed limiting member 341 at its lower end. When the trolley frame is in the unfolded state, the lower end of the first connecting seat 102 abuts against the upper end of its corresponding limiting member 341.

[0062] like Figure 1 As shown, the front frame 4 includes two front supports 41, one on the left and one on the right. The upper ends of the two front supports 41 are connected to each other to form a U-shape, which better supports the cloth cover 12 when the trolley frame is covered with the cloth cover 12. The lower ends of the two front supports 41 are rotatably connected to the left and right sides of the front end of the front base frame 101a, respectively. The rear frame 6 includes two rear supports 61, one on the left and one on the right. The lower ends of the two rear supports 61 are rotatably connected to the left and right sides of the rear end of the rear base frame 101b, respectively.

[0063] Among them, such as Figure 1 As shown, each of the two rear supports 61 is provided with a U-shaped handrail 13 at its upper end, and the two ends of the handrail 13 are rotatably connected to the upper ends of the two rear supports 61.

[0064] like Figure 5 As shown, the first folding frame 5 used in this embodiment is configured such that each first folding frame 5 includes a second connecting seat 51, a first connecting rod 52 and a second connecting rod 53. The second connecting seat 51 is slidably sleeved on the first bracket 32 ​​on the corresponding side. The two ends of the first connecting rod 52 are rotatably connected to the front bracket 41 and the second connecting seat 51 on the corresponding side, respectively. The two ends of the second connecting rod 53 are rotatably connected to the front base frame 101a and the second connecting seat 51 on the corresponding side, respectively.

[0065] When the trolley frame is switched from the folded state to the unfolded state, the front base frame 101a drives the second connecting seat 51 to slide down along the first bracket 32 ​​via the second connecting rod 53. During the process of the second connecting seat 51 sliding down along the first bracket 32, the front side frame 4 is driven to unfold towards the front and upward side of the base frame 1 via the first connecting rod 52. At this time, the angle between the first connecting rod 52 and its corresponding second connecting rod 53 is 90°.

[0066] When the trolley frame switches from the unfolded state to the folded state, the front base frame 101a drives the second connecting seat 51 to slide upward along the first bracket 32 ​​via the second connecting rod 53. During the upward sliding of the second connecting seat 51 along the first bracket 32, the first connecting rod 52 drives the front side frame 4 to fold and approach the left side frame 3a and the right side frame 3b.

[0067] Or, such as Figure 7 As shown, another embodiment of the first folding frame 5 is that each first folding frame 5 includes a third connecting seat 54 and a third connecting rod 55; each third connecting seat 54 is slidably sleeved on the front bracket 41 on its corresponding side, and the two ends of each third connecting rod 55 are rotatably connected to the first bracket 32 ​​and the third connecting seat 54 on its corresponding side, respectively.

[0068] Each of the front brackets 41 is provided with a first elastic positioning pin 56 and a first limiting part 57, and the first elastic positioning pin 56 is located on the upper side of the first limiting part 57. Each first limiting part 57 is a pin fixedly connected to the corresponding front bracket 41. Each first elastic positioning pin 56 is a spring pin and can also be replaced with a pluggable pin.

[0069] When the trolley frame is switched from the folded state to the unfolded state, each of the third connecting seats 54 slides down along the corresponding front bracket 41 to the lower side of the first elastic positioning pin 56 and is located on the upper side of the first limiting part 57, and the third connecting seat 54 drives the front frame 4 to unfold towards the front and upper side of the base frame 1 through the third connecting rod 55.

[0070] When the trolley frame switches from the unfolded state to the folded state, each of the third connecting seats 54 slides upward along the corresponding front support 41, and the third connecting seat 54 drives the front side frame 4 to fold and approach the left side frame 3a and the right side frame 3b through the third connecting rod 55.

[0071] like Figure 6 As shown, the second folding frame 7 used in this embodiment is configured such that each second folding frame 7 includes a fourth connecting seat 71 and a fourth connecting rod 72; each fourth connecting seat 71 is slidably sleeved on the rear support 61 on its corresponding side, and the two ends of each fourth connecting rod 72 are rotatably connected to the second support 33 and the fourth connecting seat 71 on its corresponding side, respectively.

[0072] Each of the rear brackets 61 is provided with a second elastic positioning pin 73 and a second limiting part 74, and the second elastic positioning pin 73 is located on the upper side of the second limiting part 74. Each second limiting part 74 is a pin fixedly connected to the corresponding rear bracket 61. Each second elastic positioning pin 73 is a spring pin and can also be replaced with a pluggable pin.

[0073] When the trolley frame is switched from the folded state to the unfolded state, each of the fourth connecting seats 71 slides down along the corresponding rear support 61 to the lower side of the second elastic positioning pin 73 and is located above the second limiting part 74. The fourth connecting seat 71 drives the rear side frame 6 to unfold towards the rear and upper side of the base frame 1 through the fourth connecting rod 72. At this time, the angle between the fourth connecting rod 72 and the rear support 61 is 90°.

[0074] When the trolley frame switches from the unfolded state to the folded state, each of the fourth connecting seats 71 slides upward along the corresponding rear support 61, and the fourth connecting seat 71 drives the rear side frame 6 to fold and approach the left side frame 3a and the right side frame 3b through the fourth connecting rod 72.

[0075] Or, such as Figure 8 As shown, another second folding frame 7 embodiment is provided, wherein each second folding frame 7 includes a fifth connecting seat 75, a fifth connecting rod 76 and a sixth connecting rod 77. The fifth connecting seat 75 is slidably sleeved on the second bracket 33 on the corresponding side. The two ends of the fifth connecting rod 76 are rotatably connected to the rear bracket 61 on the corresponding side and the fifth connecting seat 75, respectively. The two ends of the sixth connecting rod 77 are rotatably connected to the rear base frame 101b on the corresponding side and the fifth connecting seat 75, respectively.

[0076] When the trolley frame is switched from the folded state to the unfolded state, the rear base frame 101b drives the fifth connecting seat 75 to slide down along the second bracket 33 through the sixth link 77. During the process of the fifth connecting seat 75 sliding down along the second bracket 33, the rear side frame 6 is driven to unfold to the rear and upper side of the base frame 1 through the fifth link 76.

[0077] When the trolley frame switches from the unfolded state to the folded state, the rear base frame 101b drives the fifth connecting seat 75 to slide upward along the second bracket 33 via the sixth link 77. During the upward sliding of the fifth connecting seat 75 along the second bracket 33, the fifth link 76 drives the rear side frame 6 to fold and approach the left side frame 3a and the right side frame 3b.

[0078] like Figure 4 As shown, a trolley frame also includes:

[0079] The awning frame 8 includes several support frames 81, each of which is connected to two hinge frames 31 at both ends, and the several support frames 81 are arranged from front to back and around the hinge frames 31.

[0080] like Figure 9As shown, to ensure the stability of the support frame 81 connection, each of the hinge frames 31 is provided with a support frame connecting part 9. The support frame connecting part 9 is detachably connected to the hinge frame 31. When the trolley frame is in a folded state, the support frame connecting part 9 and the sunshade frame 8 can be removed, making the trolley frame smaller after folding. Several positioning parts 10 are provided around the support frame connecting part 9. Each positioning part 10 is a hole or groove provided in the support frame connecting part 9. The two ends of each support frame 81 are respectively located in the two corresponding positioning parts 10. The positioning parts 10 make the support frame 81 more stable when it is located in the support frame connecting part 9.

[0081] Each of the support frames 81 is rotatably connected to two support frame connecting parts 9 at both ends, and an elastic limiting part 11 is provided between two adjacent positioning parts 10. The support frame 81 can switch between several positioning parts 10 by rotating forward or backward; and / or, each of the support frames 81 is plugged into and connected to its corresponding two positioning parts 10 at both ends.

[0082] The connection scheme of the support frame 81 used in this embodiment is as follows: each end of the support frame 81 is rotatably connected to two support frame connecting parts 9 respectively. An elastic limiting part 11 is provided between two adjacent positioning parts 10. The elastic limiting part 11 is a set of elastic protrusions on the inner wall between two adjacent positioning parts 10. There are two elastic protrusions in each set and a space is provided between each set of elastic protrusions to facilitate the passage of the support frame 81. The support frame 81 can switch between several positioning parts 10 by rotating forward or backward.

[0083] All the support frames 81 are rotated sequentially from front to back to switch the sunshade frame 8 to the folded state, and all the support frames 81 are rotated sequentially from back to front to switch the sunshade frame 8 to the unfolded state.

[0084] like Figure 1 As shown, the wheel assembly 2 includes two front wheels 21 located at the lower ends of the two first supports 32 and two rear wheels 22 located at the lower ends of the two second supports 33. The two rear wheels 22 are connected by an axle. In order to prevent the trolley frame from moving when parked, the two rear wheels 22 can be brake wheels.

[0085] Example 2:

[0086] like Figure 4 As shown, Embodiment 2 provides a pet stroller, including a cloth cover 12 and a stroller frame as in the first embodiment, wherein the cloth cover 12 is disposed on the stroller frame;

[0087] The fabric cover 12 has a front opening at the front frame 4, a rear opening at the rear frame 6, and / or an upper opening on the upper side; the front opening, rear opening, and / or upper opening are provided with a breathable mesh or a curtain that can be opened and closed.

[0088] For example, such as Figure 4 As shown, the fabric cover 12 has a front opening at the front frame 4, a rear opening at the rear frame 6, and an upper opening on the upper side.

[0089] The front and rear openings are equipped with operable curtains, which can be opened by zippers or Velcro. The top opening uses a breathable mesh to improve ventilation inside the pet stroller.

[0090] One type of pet stroller also includes a sunshade cloth, which is fitted onto the sunshade frame 8. When the sunshade frame 8 is in the unfolded state, it covers the upper opening on the lower side, providing sunshade and rain protection for the pet inside the stroller.

[0091] Working principle explanation:

[0092] In Embodiment 1, the trolley frame slides upward along the two guide frames 34 via two first connecting seats 102, causing the left side frame 3a, right side frame 3b, front base frame 101a, and rear base frame 101b to fold towards the center. The two first connecting seats 102 enable the trolley frame in Embodiment 1 to fold in a coordinated manner, resulting in faster folding and a smaller, more convenient storage and transport volume. When the front base frame 101a folds towards the center, it rotates the second connecting rod 53 towards the front base frame 101a. The second connecting rod 53 causes the second connecting seat 51 to slide upward. The upward sliding of the second connecting seat 51, through the first connecting rod 52, causes the front support 41 to fold towards the first support 32, thus achieving coordinated folding and saving folding time, making folding faster and more convenient.

[0093] In Embodiment 2, the pet stroller uses a cloth cover 12 to enclose the pet's riding area while ensuring the pet's safety. The cloth cover 12 has a front opening, a rear opening, and a top opening to facilitate the pet's entry and exit. The sunshade frame 8, when fitted with a sunshade cloth, can shield the pet from sunlight and rain.

[0094] This utility model is not limited to the above-mentioned optional embodiments. Under the premise of non-contradiction, the various solutions can be combined arbitrarily. Anyone can derive other forms of products under the guidance of this utility model. However, no matter what changes are made in their shape or structure, all technical solutions that fall within the scope of the claims of this utility model are within the protection scope of this utility model.

Claims

1. A stroller frame, characterized in that, include: The chassis includes a front chassis and a rear chassis, with the rear end of the front chassis and the front end of the rear chassis rotatably connected by two first connecting seats on the left and right; a wheel assembly is provided on the lower side of the chassis. The left and right frames are located on the left and right sides of the base frame, respectively. Each of the left and right frames includes an upper hinge frame, a first bracket between the hinge frame and the front base frame, a second bracket between the hinge frame and the rear base frame, and a guide frame located below the hinge frame. The two ends of each first bracket are rotatably connected to the hinge frame and the front base frame on their respective sides, and the two ends of each second bracket are rotatably connected to the hinge frame and the rear base frame on their respective sides. The two first connecting seats are slidably mounted on the two guide frames in the vertical direction. A front frame, located above the front side of the base frame, has its lower end rotatably connected to the front end of the front base frame, and a first folding frame is provided between the front frame and each of the two first supports; and, The rear side frame is located above the rear side of the base frame. The lower end of the rear side frame is connected to the rear end of the rear base frame, and a second folding frame is provided between the rear side frame and the two second supports. The trolley frame includes a folded state and an unfolded state. When the trolley frame switches from the folded state to the unfolded state, the two first connecting seats slide downward along the two guide frames, causing the left side frame, right side frame, and bottom frame to unfold away from each other in the front-rear direction. The front side frame unfolds upward and to the front of the bottom frame via the first folding frame, and the rear side frame unfolds upward and to the rear of the bottom frame via the second folding frame. When the trolley frame switches from the unfolded state to the folded state, the two first connecting seats slide upward along the two guide frames, causing the left side frame, right side frame, and bottom frame to fold and approach the center. The front side frame folds and approaches the left and right side frames via the first folding frame, and the rear side frame folds and approaches the left and right side frames via the second folding frame.

2. The cart frame according to claim 1, characterized in that, The front frame includes two front supports, left and right, with the lower ends of the two front supports rotatably connected to the left and right sides of the front end of the front base frame, respectively; the rear frame includes two rear supports, left and right, with the lower ends of the two rear supports rotatably connected to the left and right sides of the rear end of the rear base frame, respectively.

3. A trolley frame according to claim 2, characterized in that, Each of the first folding frames includes a second connecting seat, a first connecting rod, and a second connecting rod. The second connecting seat is slidably disposed on the first bracket on the corresponding side. The two ends of the first connecting rod are respectively rotatably connected to the front bracket and the second connecting seat on the corresponding side. The two ends of the second connecting rod are respectively rotatably connected to the front base frame and the second connecting seat on the corresponding side. When the trolley frame switches from a folded state to an unfolded state, the front base frame drives the second connecting seat to slide downward along the first bracket via the second link. During the downward sliding of the second connecting seat along the first bracket, the front side frame is driven to unfold upward and forward of the base frame via the first link. When the trolley frame switches from an unfolded state to a folded state, the front base frame drives the second connecting seat to slide upward along the first bracket via the second link. During the upward sliding of the second connecting seat along the first bracket, the front side frame is driven to fold and close towards the left and right side frames via the first link.

4. A trolley frame according to claim 2, characterized in that, Each of the first folding frames includes a third connecting seat and a third connecting rod; each of the third connecting seats is slidably disposed on the front bracket on its corresponding side; both ends of each of the third connecting rods are rotatably connected to the first bracket and the third connecting seat on their corresponding side, respectively; each of the front brackets is provided with a first elastic positioning pin and a first limiting part, and the first elastic positioning pin is located on the upper side of the first limiting part. When the trolley frame switches from the folded state to the unfolded state, each of the third connecting seats slides downward along its corresponding front bracket to the lower side of the first elastic positioning pin and above the first limiting part, and the third connecting seat drives the front side frame to unfold towards the front and upper side of the base frame through the third link; when the trolley frame switches from the unfolded state to the folded state, each of the third connecting seats slides upward along its corresponding front bracket, and the third connecting seat drives the front side frame to fold and close towards the left and right side frames through the third link.

5. A trolley frame according to claim 2, characterized in that, Each of the second folding frames includes a fourth connecting seat and a fourth connecting rod; each of the fourth connecting seats is slidably disposed on the rear support on its corresponding side; both ends of each of the fourth connecting rods are rotatably connected to the second support and the fourth connecting seat on their corresponding side; each of the rear supports is provided with a second elastic positioning pin and a second limiting part, and the second elastic positioning pin is located on the upper side of the second limiting part; When the trolley frame switches from the folded state to the unfolded state, each of the fourth connecting seats slides downward along its corresponding rear bracket to the lower side of the second elastic positioning pin and above the second limiting part, and the fourth connecting seat drives the rear side frame to unfold towards the rear and upper side of the base frame through the fourth connecting rod; when the trolley frame switches from the unfolded state to the folded state, each of the fourth connecting seats slides upward along its corresponding rear bracket, and the fourth connecting seat drives the rear side frame to fold and close towards the left and right side frames through the fourth connecting rod.

6. A trolley frame according to claim 1, characterized in that, Each of the second folding frames includes a fifth connecting seat, a fifth link, and a sixth link. The fifth connecting seat is slidably mounted on the second bracket on the corresponding side. The two ends of the fifth link are rotatably connected to the rear bracket on the corresponding side and the fifth connecting seat, respectively. The two ends of the sixth link are rotatably connected to the rear base frame on the corresponding side and the fifth connecting seat, respectively. When the trolley frame switches from a folded state to an unfolded state, the rear base frame drives the fifth connecting seat to slide downward along the second bracket via the sixth link. During the downward sliding of the fifth connecting seat along the second bracket, the fifth link drives the rear side frame to unfold upward and to the rear of the base frame. When the trolley frame switches from an unfolded state to a folded state, the rear base frame drives the fifth connecting seat to slide upward along the second bracket via the sixth link. During the upward sliding of the fifth connecting seat along the second bracket, the fifth link drives the rear side frame to fold and close towards the left and right side frames.

7. A trolley frame according to claim 1, characterized in that, Also includes: A sunshade frame, comprising a plurality of support frames, each of which is connected at both ends to two hinge frames, and the plurality of support frames are arranged from front to back and around the hinge frames.

8. A trolley frame according to claim 7, characterized in that, Each of the hinged frames is provided with a support frame connecting part, and a plurality of positioning parts are provided around the support frame connecting part; the two ends of each support frame are respectively located in the two positioning parts corresponding to it; Each of the support frames is rotatably connected to two support frame connecting parts at both ends, and an elastic limiting part is provided between two adjacent positioning parts. The support frame can switch between several positioning parts by rotating forward or backward; and / or, each of the support frames is plugged into and connected to its corresponding two positioning parts at both ends. All the support frames are rotated sequentially from front to back to switch the awning frame to a folded state, and all the support frames are rotated sequentially from back to front to switch the awning frame to an unfolded state.

9. A trolley frame according to claim 1, characterized in that, The wheel assembly includes two front wheels located at the lower ends of the two first supports and two rear wheels located at the lower ends of the two second supports.

10. A pet stroller, characterized in that, Includes a cloth cover and a trolley frame as described in any one of claims 1 to 9, wherein the cloth cover is disposed on the trolley frame; The fabric cover has a front opening on the front frame, a rear opening on the rear frame, and / or an upper opening on the upper side; the front opening, rear opening, and / or upper opening are provided with a breathable mesh or an operable curtain.

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