Foldable trolley

Abstract

The utility model relates to the technical field of household trolleys, in particular to a foldable trolley. The foldable trolley comprises a trolley frame, a sliding sleeve, a hand pushing frame, an upper connecting rod, a chassis frame and a lower connecting rod, the trolley frame is provided with a storage basket, and the sliding sleeve is arranged on the trolley frame in a sliding and sleeving mode in the trolley length direction of the trolley frame. The hand-push frame is located above the frame, one end of the hand-push frame is rotationally arranged on the sliding sleeve, and the two ends of the upper connecting rod are rotationally arranged on the hand-push frame and the frame respectively. The chassis frame is located below the frame, one end of the chassis frame is rotationally arranged on the sliding sleeve, and the two ends of the lower connecting rod are rotationally arranged on the chassis frame and the frame respectively. The foldable trolley is provided with an unfolding position where the trolley frame and the hand pushing frame are both far away from the chassis frame and a folding position where the trolley frame and the hand pushing frame are both folded in the chassis frame. The frame, the hand-push frame, the upper connecting rod, the chassis frame and the lower connecting rod form the connecting rod assembly, the structure of the foldable trolley is simplified, rapid switching of the foldable trolley between the unfolding position and the folding position is achieved, and the efficiency of trolley unfolding and trolley folding is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of household trolley, especially a foldable trolley. BACKGROUND

[0002] The foldable trolley is an essential article in life, and has respective use functions and use scenes under different purposes. For example, the trolley is used to carry fruits and vegetables, babies and pets at home or outside. The existing foldable trolley has a complex structure, and needs to be operated according to a fixed operation sequence for multiple buckle operations when being unfolded and stored, which leads to a long time consumption and inconvenient operation of the folding process (i.e. folding the trolley) and unfolding process (i.e. unfolding the trolley) of the foldable trolley. SUMMARY

[0003] The utility model aims at providing a foldable trolley to solve the technical problems of the complex structure of the foldable trolley and the inconvenient operation of unfolding and folding the trolley in the prior art.

[0004] To achieve the above purpose, the utility model adopts the following technical scheme:

[0005] The foldable trolley comprises a frame, a sliding sleeve, a hand trolley, an upper connecting rod, a bottom disc frame and a lower connecting rod, the frame is provided with a storage basket, the sliding sleeve is slidably arranged on the frame along the length direction of the frame;

[0006] The hand trolley is located above the frame, one end of the hand trolley is rotatably arranged on the sliding sleeve, and the two ends of the upper connecting rod are rotatably arranged on the hand trolley and the frame; the bottom disc frame is located below the frame, one end of the bottom disc frame is rotatably arranged on the sliding sleeve, and the two ends of the lower connecting rod are rotatably arranged on the bottom disc frame and the frame; the foldable trolley has an unfolded position, in which the frame and the hand trolley are away from the bottom disc frame, and a folded position, in which the frame and the hand trolley are folded on the bottom disc frame.

[0007] As an optional scheme, the sliding sleeve comprises:

[0008] A main sliding sleeve is slidably arranged on the frame;

[0009] A first sleeve is rotatably arranged on the main sliding sleeve, and one end of the hand trolley is fixedly arranged in the first sleeve;

[0010] A second sleeve is rotatably arranged on the main sliding sleeve, and one end of the bottom disc frame is arranged in the second sleeve and can rotate around the axial direction of the second sleeve.

[0011] As an option, a locking mechanism is provided between the main sliding sleeve and the first sleeve, which is configured to lock the relative position of the handcart and the frame to keep the foldable trolley in the unfolded position or the folded position, or to unlock the relative position of the handcart and the frame.

[0012] As an option, along the length direction of the frame, the rotation center A between the upper connecting rod and the handcart is located at the front end of the rotation center B between the upper connecting rod and the frame.

[0013] Along the length direction of the frame, the rotation center C between the lower connecting rod and the chassis is located at the front end of the rotation center D between the lower connecting rod and the frame.

[0014] As an option, the handcart comprises:

[0015] A connecting rod, one end of which is rotatably arranged in the sliding sleeve;

[0016] An extension rod, one end of which is telescopically arranged in the end of the connecting rod away from the sliding sleeve, and the position of the extension rod along the axial direction of the connecting rod is adjustable.

[0017] As an option, the connecting rod is provided with at least two positioning holes spaced along the axial direction, and the extension rod is provided with a ball head plunger, and the ball of the ball head plunger selectively slides into one of the positioning holes.

[0018] As an option, the handcart comprises:

[0019] A connecting rod, one end of which is rotatably arranged in the sliding sleeve;

[0020] An extension rod, one end of which is rotatably arranged in the end of the connecting rod away from the sliding sleeve, and the extension rod has a storage position folded in the connecting rod and a use position arranged at an angle with the connecting rod.

[0021] As an option, the storage basket is synchronously unfolded with the frame or synchronously folded and stored in the frame; or the storage basket is a fixed basket.

[0022] As an option, the front end of the frame along the length direction is supported by a front wheel, and the rear end of the chassis along the length direction is supported by a rear wheel.

[0023] As an option, the front wheel and / or the rear wheel is a universal wheel.

[0024] The beneficial effects of the utility model are:

[0025] The utility model provides a foldable handcart, the slide sleeve is sleeved in the frame, and one end of the handcart is rotatably arranged on the slide sleeve, and the two ends of the upper connecting rod are rotatably arranged on the handcart and the frame, and one end of the chassis is rotatably arranged on the slide sleeve, and the two ends of the lower connecting rod are rotatably arranged on the chassis and the frame, so that the frame, the handcart, the upper connecting rod, the chassis and the lower connecting rod form a connecting rod assembly, and the structure of the foldable handcart is simplified. At the same time, the frame and the handcart are away from or folded on the chassis by pressing or pulling the handcart, the quick switching of the foldable handcart in the unfolded position and the folded position is realized, the operation of unfolding and folding the handcart is more convenient, and the efficiency of unfolding and folding the handcart is improved. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is the structure schematic diagram of the foldable handcart of the utility model embodiment not installing the storage basket, and the like.

[0027] Figure 2 It is the side view of the foldable handcart in the unfolded position of the utility model embodiment.

[0028] Figure 3 It is the side view of the foldable handcart in the folded position of the utility model embodiment.

[0029] The component names and labels in the drawing are as follows:

[0030] 1, frame, 2, slide sleeve, 21, main slide sleeve, 22, first sleeve, 23, second sleeve, 3, handcart, 31, connecting rod, 32, extension rod, 4, upper connecting rod, 5, chassis, 6, lower connecting rod, 7, storage basket, 8, front wheel, 9, rear wheel. DETAILED DESCRIPTION

[0031] In order to make the technical problems solved by the utility model, the technical scheme adopted and the technical effects reached more clear, the technical scheme of the utility model will be further explained below in combination with the drawings and through specific embodiments. It can be understood that the specific embodiments described here are only used to explain the utility model, not to limit the utility model. In addition, it should be noted that, in order to facilitate the description, only the parts related to the utility model are shown in the drawings, not all.

[0032] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0033] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature can include that the first and second features are in direct contact, or can include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "under", "below" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0034] In the description of the present embodiment, the terms "up", "down", "right", "left" and other orientation or position relationships are based on the orientation or position relationship shown in the drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0035] The technical solutions of the present application will be further illustrated below in conjunction with the drawings and through specific embodiments.

[0036] The foldable trolley is an essential item in life, and has its own use function and use scene under different purposes. For example, the trolley is used to carry fruits and vegetables, babies, pets, etc. when at home or going out. The existing foldable trolley has a complex structure, and needs to be operated multiple times by buckling according to a fixed operation sequence when unfolding and storing, which results in long time consumption and inconvenient operation in the folding and unfolding processes of the foldable trolley.

[0037] To solve the above problems, as Figure 1 and Figure 2As shown in the figure, this embodiment proposes a foldable trolley, which includes a frame 1, a sliding sleeve 2, a pusher frame 3, an upper connecting rod 4, a chassis frame 5, and a lower connecting rod 6. The frame 1 is equipped with a storage basket 7. The sliding sleeve 2 is slidably fitted onto the frame 1 along its length (front-to-back direction in the figure). The pusher frame 3 is located above the frame 1, with one end rotatably mounted on the sliding sleeve 2. Both ends of the upper connecting rod 4 are rotatably mounted on the pusher frame 3 and the frame 1, respectively. The chassis frame 5 is located below the frame 1, with one end rotatably mounted on the sliding sleeve 2. Both ends of the lower connecting rod 6 are rotatably mounted on the chassis frame 5 and the frame 1, respectively. The foldable trolley has an unfolded position where both the frame 1 and the pusher frame 3 are away from the chassis frame 5, and a folded position where both the frame 1 and the pusher frame 3 are folded into the chassis frame 5. By sliding the sliding sleeve 2 onto the frame 1, rotating one end of the push frame 3 onto the sliding sleeve 2, rotating both ends of the upper connecting rod 4 onto the push frame 3 and the frame 1 respectively, rotating one end of the chassis frame 5 onto the sliding sleeve 2, and rotating both ends of the lower connecting rod 6 onto the chassis frame 5 and the frame 1 respectively, the frame 1, push frame 3, upper connecting rod 4, chassis frame 5, and lower connecting rod 6 form a linkage assembly, simplifying the structure of the foldable trolley. Simultaneously, by pressing or pulling the push frame 3, the frame 1 and push frame 3 can be moved away from or folded towards the chassis frame 5, enabling rapid switching between the unfolded and folded positions of the foldable trolley, making the unfolding and folding operations easier and improving efficiency.

[0038] In this embodiment, as Figure 2 As shown, when the foldable trolley is folded down from its unfolded position, pressure is applied downwards along the height of the trolley via the pusher 3 (vertical direction in the diagram), and the upper connecting rod 4 moves along... Figure 2 The slide 2 rotates in the direction indicated by the middle arrow, while the sliding sleeve 2 moves from rear to front along the length of the vehicle, thereby causing the chassis frame 5 to rotate relative to the frame 1, and the lower connecting rod 6 rotates along the direction indicated by the middle arrow. Figure 2 Rotate in the direction indicated by the middle arrow, at which point both the pusher frame 3 and the cart frame 1 move closer to the chassis frame 5. When the foldable trolley is switched to the folding position, as shown by the middle arrow... Figure 3 As shown, both the frame 1 and the pusher 3 are folded into the chassis frame 5. When the foldable trolley is unfolded from the folded position, the pusher 3 applies an upward pulling force along the height of the trolley, and the upper connecting rod 4 moves upward along the handlebars. Figure 2 The sliding sleeve 2 rotates in the opposite direction to the direction indicated by the middle arrow, while the sliding sleeve 2 moves from front to back along the length of the vehicle, thereby causing the chassis frame 5 to rotate relative to the frame 1, and the lower connecting rod 6 rotates along the direction indicated by the middle arrow. Figure 2 Rotate in the opposite direction indicated by the middle arrow. At this time, both the pusher 3 and the frame 1 are away from the chassis frame 5 until the foldable trolley is switched to the unfolded position.

[0039] Specifically, the frame 1 is roughly a rectangular frame, and the upper edge of the storage basket 7 is fixed to the frame 1 along the circumference of the frame 1 so that children can lie or sit in the storage basket 7 or store fruits, vegetables or other items through the storage basket 7.

[0040] Furthermore, in this embodiment, the storage basket 7 is a fixed basket, meaning it will not fold or collapse. This ensures that the storage basket 7 retains its storage function even when the foldable trolley is in the folded position, thus expanding the applicability of the foldable trolley. Figure 3 As shown, when the foldable trolley is in the folded position, the storage basket 7 only descends a certain distance in the height direction without folding. At this time, the storage basket 7 does not affect the folding and retraction of the frame 1 and the push handle 3, thus achieving reliable folding of the foldable trolley. In other embodiments, the storage basket 7 unfolds or folds synchronously with the frame 1 and is retracted into the frame 1. The storage basket 7 can be made of canvas or other flexible materials, allowing it to fold automatically or manually. When the foldable trolley is in the unfolded position, the storage basket 7 unfolds synchronously with the frame 1 to achieve the storage function; when the foldable trolley is in the folded position, the storage basket 7 folds synchronously with the frame 1 and is retracted into the frame 1 to reduce the space occupied by the storage basket 7, facilitating the storage and movement of the foldable trolley. It should be noted that when the storage basket 7 has automatic folding and unfolding functions, the storage basket 7 also needs to be connected to the chassis frame 5 and / or the lower connecting rod 6 to ensure that the storage basket 7 unfolds or folds synchronously with the frame 1. Since the structure for the automatic folding and unfolding of the storage basket 7 is existing technology in the trolley industry, the connection structure between the storage basket 7 and the chassis frame 5 and / or the lower linkage 6 will not be described in detail.

[0041] It should be noted that both the push frame 3 and the chassis frame 5 have a U-shaped structure, and the left and right sides of the push frame 3 are respectively rotatably mounted on the left and right sides of the frame 1 along the vehicle width direction (left and right direction in the figure), and the left and right sides of the chassis frame 5 are respectively rotatably mounted on the left and right sides of the frame 1 along the vehicle width direction. There are two upper connecting rods 4 and two lower connecting rods 6, with the two upper connecting rods 4 symmetrically mounted on the left and right sides of the frame 1 along the vehicle width direction, and the two lower connecting rods 6 symmetrically mounted on the left and right sides of the frame 1 along the vehicle width direction.

[0042] Specifically, the sliding sleeve 2 includes a main sliding sleeve 21, a first sleeve 22, and a second sleeve 23. The main sliding sleeve 21 is slidably fitted onto the frame 1. The first sleeve 22 is rotatably mounted on the main sliding sleeve 21, and one end of the pusher 3 is fixedly inserted into the first sleeve 22. The second sleeve 23 is rotatably mounted on the main sliding sleeve 21, and one end of the chassis frame 5 is inserted into the second sleeve 23 and can rotate around the axis of the second sleeve 23. Through the above arrangement, the pusher 3 and the first sleeve 22 rotate relative to the main sliding sleeve 21, and the chassis frame 5 and the second sleeve 23 rotate relative to the main sliding sleeve 21. This allows the main sliding sleeve 21 to slide along the front-back direction on the frame 1, while the pusher 3 and the chassis frame 5 can also rotate relative to the frame 1, enabling the foldable trolley to switch between the unfolded and folded positions.

[0043] Further, the locking mechanism is arranged between the main sliding sleeve 21 and the first sleeve 22, and is configured to lock the relative position of the handcart 3 and the frame 1, so as to keep the foldable trolley in the unfolded position or the folded position; or, to unlock the relative position of the handcart 3 and the frame 1. By arranging the locking mechanism, the foldable trolley can be locked in the unfolded position and the folded position, so as to ensure the normal use and storage of the foldable trolley. Meanwhile, the locking mechanism can also realize the unlocking of the foldable trolley, so as to quickly switch the foldable trolley between the unfolded position and the folded position.

[0044] Specifically, the locking mechanism of the embodiment comprises a pull rod and a gear set. The pull rod is movably arranged on the handcart 3 by a spring. Two gears in the gear set are engaged and respectively arranged on the main sliding sleeve 21 and the first sleeve 22, so that the main sliding sleeve 21 and the first sleeve 22 are relatively rotated through the engagement of the gear set. One end of the pull rod is arranged on one side of the circumference of one of the gears. By pulling the pull rod, the pull rod is out of contact with the corresponding gear, and the two gears can be engaged and rotated, so as to rotate the handcart 3 relative to the frame 1; after the pull rod is released, one end of the pull rod is abutted against the corresponding gear under the action of the spring, so as to lock the gear set, and at this time, the handcart 3 and the frame 1 are locked, so as to keep the state of the foldable trolley unchanged. Since the above-mentioned locking mechanism is prior art, the specific structure and working process of the locking mechanism will not be described again. Of course, the locking mechanism can also be other types of locking mechanisms, as long as it can unlock and lock the foldable trolley, which is not limited in detail here.

[0045] As shown in Figure 2 and Figure 3 , along the length direction of the frame 1, the upper connecting rod 4 is located at the rear end of the lower connecting rod 6. Through the above arrangement, the lower connecting rod 6 is in front and the upper connecting rod 4 is in back, so that the upper connecting rod 4 is closer to the force applying end of the handcart 3, thereby reducing the folding difficulty of the foldable trolley. In other embodiments, the upper connecting rod 4 can also be located at the front end of the lower connecting rod 6 according to the size of the frame 1.

[0046] It should be noted that, as shown in Figure 2 , along the length direction of the frame 1, the rotation center A between the upper connecting rod 4 and the handcart 3 is located at the front end of the rotation center B between the upper connecting rod 4 and the frame 1. Along the length direction of the frame 1, the rotation center C between the lower connecting rod 6 and the chassis frame 5 is located at the front end of the rotation center D between the lower connecting rod 6 and the frame 1. Through the above arrangement, the upper connecting rod 4 and the lower connecting rod 6 maintain an inclined posture when the foldable trolley is in the unfolded position. When the upper connecting rod 4 and the lower connecting rod 6 can rotate in the direction shown by the arrow in Figure 2 after the handcart 3 receives a downward pressure in the height direction, so as to ensure the reliability of folding.

[0047] As shown in Figures 1-3 The handrail 3 includes a connecting rod 31 and an extension rod 32. One end of the connecting rod 31 is rotatably arranged on the sliding sleeve 2. The extension rod 32 is telescopically arranged at the end of the connecting rod 31 away from the sliding sleeve 2. The position of the extension rod 32 along the connecting rod 31 is adjustable. By telescopically arranging the extension rod 32 on the connecting rod 31, the extension rod 32 can be extended or retracted from the end of the connecting rod 31 away from the sliding sleeve 2, so as to adjust the length and height of the handrail 3, thereby adapting to users of different heights and improving the user experience. In other embodiments, one end of the extension rod 32 is rotatably arranged at the end of the connecting rod 31 away from the sliding sleeve 2. The extension rod 32 has a storage position folded on the connecting rod 31 and a use position arranged at an angle with the connecting rod 31. By the above arrangement, the extension rod 32 is adjustably arranged on the connecting rod 31, so that the extension rod 32 can be folded on the connecting rod 31 or rotated relative to the connecting rod 31 to any angle less than 180°, 180°, or greater than 180°. The position adjustment of the extension rod 32 can also achieve flexible adjustment of the length and height of the handrail 3, thereby adapting to users of different heights and improving the user experience.

[0048] Specifically, two connecting rods 31 are arranged on the left and right sides of the frame 1. One end of the upper connecting rod 4 is rotatably arranged on the connecting rod 31. The extension rod 32 is U-shaped. The left and right rod portions of the connecting rod 31 are telescopically arranged at the ends of the corresponding connecting rods 31 away from the sliding sleeve 2. By pushing the extension rod 32 in the direction towards the connecting rod 31, the extension rod 32 is retracted into the connecting rod 31, so as to reduce the length and height of the handrail 3. Alternatively, by pulling the extension rod 32 in the direction away from the connecting rod 31, the extension rod 32 is extended from the connecting rod 31, so as to increase the length and height of the handrail 3.

[0049] In this embodiment, the connecting rod 31 is axially spaced apart by at least two positioning holes. The extension rod 32 is provided with a ball head plunger. The ball of the ball head plunger is selectively slid into one of the positioning holes. When adjusting the position of the extension rod 32 relative to the connecting rod 31, the ball of the ball head plunger is slid out of the positioning hole. When the position of the extension rod 32 is adjusted in place, the ball of the ball head plunger is slid into the positioning hole and clamped in the corresponding positioning hole under the action of the spring of the ball head plunger, so as to lock the relative position of the connecting rod 31 and the extension rod 32. By the clamping cooperation of the ball head plunger and the different positioning holes, the length of the handrail 3 is quickly adjusted, and the adjustment efficiency is improved.

[0050] As shown in Figures 1-3As shown, the front end of the frame 1 in the vehicle length direction is supported by the front wheels 8, and the rear end of the chassis frame 5 in the vehicle length direction is supported by the rear wheels 9. The frame 1 is supported by the front wheels 8 and the rear wheels 9 to ensure smooth movement of the foldable trolley. Specifically, the left and right sides of the front end of the frame 1 are supported by two front wheels 8, and the left and right sides of the rear end of the chassis frame 5 are supported by two rear wheels 9 to support the foldable trolley by four wheels, thereby improving the stability of the foldable trolley during movement.

[0051] In this embodiment, the front wheels 8 are universal wheels to realize steering movement of the foldable trolley by the front wheels 8. In other embodiments, the rear wheels 9 are universal wheels or both the front wheels 8 and the rear wheels 9 are universal wheels.

[0052] The above embodiments only illustrate the basic principles and characteristics of the present application, and the present application is not limited by the above embodiments. Without departing from the spirit and scope of the present application, various changes and modifications can be made to the present application, and these changes and modifications all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. Foldable trolley, characterized in that, The foldable trolley comprises a frame (1), a sliding sleeve (2), a hand push frame (3), an upper connecting rod (4), a chassis frame (5) and a lower connecting rod (6), the frame (1) is provided with a storage basket (7), the sliding sleeve (2) is sleeved on the frame (1) and slides along the length direction of the frame (1); The hand push frame (3) is located above the frame (1), one end of the hand push frame (3) is rotatably arranged on the sliding sleeve (2), and the two ends of the upper connecting rod (4) are rotatably arranged on the hand push frame (3) and the frame (1) respectively; the chassis frame (5) is located below the frame (1), one end of the chassis frame (5) is rotatably arranged on the sliding sleeve (2), and the two ends of the lower connecting rod (6) are rotatably arranged on the chassis frame (5) and the frame (1) respectively; the foldable trolley has an unfolded position in which the frame (1) and the hand push frame (3) are away from the chassis frame (5) and a folded position in which the frame (1) and the hand push frame (3) are folded on the chassis frame (5).

2. The foldable stroller of claim 1, wherein, The sliding sleeve (2) comprises: a main sliding sleeve (21) which is sleeved on the frame (1); a first sleeve (22) which is rotatably arranged on the main sliding sleeve (21), one end of the hand push frame (3) is fixedly arranged in the first sleeve (22); a second sleeve (23) which is rotatably arranged on the main sliding sleeve (21), one end of the chassis frame (5) is arranged in the second sleeve (23) and can rotate around the second sleeve (23) in the axial direction.

3. The collapsible pushcar of claim 2, wherein, A locking mechanism is arranged between the main sliding sleeve (21) and the first sleeve (22), the locking mechanism is configured to lock the relative position of the hand push frame (3) and the frame (1) so that the foldable trolley is kept in the unfolded position or the folded position, or the locking mechanism is configured to unlock the relative position of the hand push frame (3) and the frame (1).

4. The collapsible pushcar of claim 1, wherein, Along the length direction of the frame (1), the rotation center A between the upper connecting rod (4) and the hand push frame (3) is located in front of the rotation center B between the upper connecting rod (4) and the frame (1); Along the length direction of the frame (1), the rotation center C between the lower connecting rod (6) and the chassis frame (5) is located in front of the rotation center D between the lower connecting rod (6) and the frame (1).

5. The collapsible stroller of claim 1, wherein, The hand push frame (3) comprises: a connecting rod (31) which is rotatably arranged on the sliding sleeve (2); an extension rod (32) which is telescopically arranged in one end of the connecting rod (31) away from the sliding sleeve (2), and the position of the extension rod (32) along the axial direction of the connecting rod (31) is adjustable.

6. The collapsible pushcar of claim 5, wherein, The connecting rod (31) is provided with at least two positioning holes which are arranged in the axial direction, and the extension rod (32) is provided with a ball head plunger, and the ball of the ball head plunger is selectively arranged in one of the positioning holes.

7. The collapsible pushcar of claim 1, wherein, The hand push frame (3) comprises: A connecting rod (31) is rotatably arranged at one end of the sliding cover (2); An extension rod (32) is rotatably arranged at one end of the connecting rod (31) away from the sliding cover (2), and the extension rod (32) has a storage position of being folded in the connecting rod (31) and a use position of being arranged at an angle with the connecting rod (31).

8. The foldable trolley according to any one of claims 1 to 7, characterized in that, The storage basket (7) is synchronously unfolded with the frame (1) or synchronously folded and stored in the frame (1); or the storage basket (7) is a fixed basket.

9. The foldable trolley according to any one of claims 1 to 7, characterized in that, The front end of the frame (1) in the length direction is supported by a front wheel (8), and the rear end of the chassis frame (5) in the length direction is supported by a rear wheel (9).

10. The foldable trolley of claim 9, wherein, The front wheel (8) and / or the rear wheel (9) is a universal wheel.

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