Foldable cart frame capable of being pushed and pulled and beach cart

Abstract

The utility model provides a foldable cart frame capable of being pushed and pulled and a beach cart, the foldable cart frame comprises a first cart frame, a second cart frame and a bottom back connecting piece movably connected between the first cart frame and the second cart frame, and the first cart frame is connected with the second cart frame in a folding mode through the bottom back connecting piece; the locking assembly is movably connected with the bottom back connecting piece, and when the mutual positions of the bottom back connecting piece, the first frame and the second frame are locked through the locking assembly, the first frame and the second frame are mutually unfolded; when the locking assembly is unlocked, the first frame and the second frame are mutually folded. The first cart frame is used as a push-pull and vertical supporting structure of the folding cart frame, a cart owner can autonomously control the cart frame in the using process, the size of the cart frame is greatly reduced when the cart frame is in the folding state, and the occupied space of the folded cart frame is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of foldable cart frames, in particular to a push-pull foldable cart frame and a beach cart. Background Art

[0002] A beach cart is a means of transporting items on the beach. In the prior art, the design structure of a beach cart is relatively fixed, and its cart frame is generally set to a fixed installation mode perpendicular to each other, which can realize the push-pull mode, but cannot be folded; or the folding mode of the beach cart is folding and folding in the horizontal direction, and its folding result does not significantly improve the structural performance of the beach cart; or because it can realize the overlap folding of the pull rod and the base, but because of its unstable folding connection, it is difficult for the folding bracket to support the beach cart to realize the push-pull mode in its unfolded mode, and the existing beach cart has a small use space and a limited actual storage space, resulting in poor practicality of the beach cart. In order to ensure that the beach cart can stably use the push-pull mode in the unfolded mode, a beach cart storage and use device is added, the actual use space of the beach cart is increased, the folding and storage effect of the beach cart is enhanced, the folding volume of the beach cart is reduced, and the practicality of the beach cart is improved. A push-pull foldable cart frame and a beach cart are proposed. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] The problem to be solved by the utility model is to provide a push-pull foldable stroller frame and a beach stroller, whose push-pull performance can drive the beach stroller to move freely on the beach, increase the storage space, improve its carrying performance, and can be folded and stored when not in use, reducing the carrying pressure.

[0005] (II) Technical solution

[0006] To solve at least one aspect of the above problems, the utility model first provides a push-pull foldable stroller frame, comprising a first frame, a second frame and a bottom back connecting member movably connected between the first frame and the second frame, the first frame being foldably connected to the second frame via the bottom back connecting member; and further comprising a locking assembly movably connected to the bottom back connecting member, when the relative positions between the bottom back connecting member, the first frame and the second frame are locked by the locking assembly, the first frame and the second frame are unfolded relative to each other; when the locking assembly is unlocked, the first frame and the second frame are folded relative to each other.

[0007] Preferably, the bottom back connecting members are respectively provided at the lower ends of the left and right sides of the first frame, and the bottom back connecting members are hingedly connected to the second frame to achieve a folding connection between the first frame and the second frame.

[0008] Preferably, a mounting groove is provided at the bottom of the bottom back connecting member, and the second frame includes a frame. When the first frame and the second frame are unfolded with each other, the frame is installed in the mounting groove, and when the first frame and the second frame are folded with each other, the frame is separated from the mounting groove.

[0009] Preferably, the locking assembly is provided between the two groups of the bottom and back connecting parts, the locking assembly includes a plug-in column, the frame is provided with a plug-in hole suitable for cooperating with the plug-in column, when the locking assembly is in a locked state, the plug-in column is inserted into the plug-in hole to realize the mutual unfolding of the first frame and the second frame, when the locking assembly is in an unlocked state, the plug-in column is disengaged from the plug-in hole to realize the mutual folding of the first frame and the second frame.

[0010] Preferably, the locking assembly also includes a pressing cover, an oblique pressing block and a sliding block. Two groups of oblique pressing blocks are respectively provided in parallel at the left and right ends of the bottom of the pressing cover. The two groups of oblique pressing blocks on the left side are slidably connected with the left sliding block, and the two groups of oblique pressing blocks on the right side are slidably connected with the right sliding block. When the pressing cover is subjected to pressing force, the pressing cover presses down the oblique pressing blocks to drive the two groups of sliding blocks to approach each other until the plug-in column and the plug-in hole are disengaged from each other, and the locking assembly is in an unlocked state; when the pressing force is withdrawn, the two groups of sliding blocks move away from each other to drive the plug-in column to be inserted into the plug-in hole, and the locking assembly is in a locked state.

[0011] Preferably, it also includes a third frame foldably connected to the first frame, the first frame includes two groups of backrest straight tubes spaced apart on the left and right, the lower ends of the two groups of backrest straight tubes are foldably connected to the left and right ends of the second frame respectively, and the upper ends of the two groups of backrest straight tubes are foldably connected to the left and right ends of the third frame respectively.

[0012] Preferably, backrest fixing frames are respectively provided at the rear ends of the left and right sides of the third frame, the backrest fixing frames are connected to the backrest straight tube, and the backrest fixing frames are hingedly connected to the third frame to achieve a folding connection between the third frame and the first frame.

[0013] Preferably, a movable cavity is provided at the bottom of the backrest fixing frame, and the rear end of the third frame is hinged in the movable cavity. When the third frame and the first frame are unfolded with each other, the third frame and the backrest straight tube are perpendicular to each other and the third frame is located in front of the backrest fixing frame. When the third frame and the first frame are folded with each other, the third frame and the backrest straight tube are parallel to each other.

[0014] Preferably, a group of support rods are respectively provided at the left and right ends of the third frame, a vertical movable part is provided at the bottom of the support rod, the vertical movable part is arranged on the backrest straight tube, the vertical movable part includes a support connecting part, a movable pin is provided at the outer end of the inner cavity of the support connecting part, a push-down button is provided at the top of the movable pin, and the other end of the support rod is hinged to the support connecting part.

[0015] In addition, the utility model provides a beach cart, comprising the pushable and pullable folding cart frame as described above.

[0016] (III) Beneficial effects

[0017] The utility model provides a push-pull foldable stroller frame, which comprises a first frame, a second frame and a third frame. The first frame serves as a push-pull and vertical support structure for the foldable stroller frame. The front end of the first frame fixes the installation of the second frame and the third frame respectively, which can effectively increase the use space of the foldable stroller frame and improve the design sense of the foldable stroller frame. When the first frame and the second frame are unfolded and locked, the entire foldable stroller frame can be pushed and pulled by the first frame, so that the owner can independently control the foldable stroller frame during use, and the third frame can be folded and stored on the first frame. When the first frame and the second frame are in an unlocked state, the first frame and the third frame are stored on the second frame, which greatly reduces the volume of the stroller frame, reduces the space occupied by the folded foldable stroller frame, and reduces the carrying and logistics transportation pressure of the foldable stroller frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of a pushable and pullable foldable stroller frame and a beach stroller according to an embodiment of the utility model;

[0019] Figure 2 This is a schematic diagram of the connection structure of the locking assembly of the push-pull folding cart frame according to an embodiment of the utility model;

[0020] Figure 3 It is a structural schematic diagram of the A area of ​​the pushable and pullable foldable cart frame according to an embodiment of the utility model;

[0021] Figure 4 It is a structural schematic diagram of the positional relationship between the plug-in column and the plug-in hole of the push-pull folding cart frame of the embodiment of the utility model;

[0022] Figure 5 It is a front view of the locking assembly of the pushable and pullable folding cart frame according to an embodiment of the utility model;

[0023] Figure 6 It is a schematic diagram of the installation structure of the third frame of the push-pull folding stroller frame according to an embodiment of the utility model;

[0024] Figure 7 The utility model is a schematic diagram of the installation structure of the push button of the push-pull folding cart frame according to the embodiment of the utility model.

[0025] Description of reference numerals:

[0026] 1 is the second frame, 2 is the third frame, 21 is the backrest fixing frame, 22 is the movable cavity, 23 is the support rod, 24 is the support connecting piece, 25 is the push button, 26 is the movable pin, 3 is the first frame, 31 is the backrest straight tube, 32 is the armrest, 33 is the rubber sleeve, 4 is the bottom back connecting piece, 41 is the installation groove, 42 is the accommodating groove, 43 is the first connecting pin, 44 is the second connecting pin, 45 is the stainless steel connecting piece, 5 is the locking assembly, 51 is the limiting sleeve, 52 is the pressure cover, 53 is the oblique pressure block, 54 is the guide column, 55 is the slider, and 56 is the plug-in column. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0028] In the description of the present invention, it should be understood that the terms "upper" and "lower" and the like indicate positions or location relationships that are based on the positions or location relationships when the product is in normal use.

[0029] The terms "first" and "second" are used only for descriptive purposes and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. The drawings of the embodiments of the present utility model are provided with a coordinate system XYZ, wherein the positive direction of the X-axis represents the left, the reverse direction of the X-axis represents the right, the positive direction of the Y-axis represents the front, the reverse direction of the Y-axis represents the back, the positive direction of the Z-axis represents the top, and the reverse direction of the Z-axis represents the bottom.

[0030] See also Figure 1-7 The embodiment of the utility model provides a pushable and pullable folding stroller frame, comprising a first frame 3, a second frame 1 and a bottom back connecting member 4 movably connected between the first frame 3 and the second frame 1, wherein the first frame 3 is foldably connected to the second frame 1 via the bottom back connecting member 4; further comprising a locking assembly 5 movably connected to the bottom back connecting member 4, wherein when the relative positions between the bottom back connecting member 4, the first frame 3 and the second frame 1 are locked by the locking assembly 5, the first frame 3 and the second frame 1 are unfolded relative to each other; when the locking assembly 5 is unlocked, the first frame 3 and the second frame 1 are folded relative to each other.

[0031] See also Figure 1The lower ends of the left and right sides of the first frame 3 are respectively provided with bottom back connecting members 4, and the bottom back connecting members 4 are hingedly connected to the second frame 1 to realize the folding connection between the first frame 3 and the second frame 1.

[0032] See also Figure 2 A mounting groove 41 is provided at the bottom of the bottom back connecting member 4, and the second frame 1 includes a frame. When the first frame 3 and the second frame 1 are unfolded with each other, the frame is installed in the mounting groove 41, and when the first frame 3 and the second frame 1 are folded with each other, the frame is separated from the mounting groove 41.

[0033] A first connecting pin 43 is provided at the front end of the mounting groove 41, and a receiving groove 42 is provided at the upper end of the bottom back connector 4. The receiving groove 42 wraps the first frame 3. A second connecting pin 44 is provided at the top of the bottom back connector 4 corresponding to the first frame 3. The bottom back connector 4 is sleeved on the second frame 1 through the mounting groove 41, and the setting of the second frame 1 is limited by the first connecting pin 43. The bottom back connector 4 is sleeved on the bottom of the first frame 3 through the receiving groove 42, and the setting of the first frame 3 is fixed by the second connecting pin 44. A stainless steel connecting plate 45 is provided between the first connecting pin 43 and the second connecting pin 44. The stainless steel connecting plate 45 is provided between the two groups of connecting pins on the same side of the bottom back connector 4 to enhance the connection stability control of the hinge structure to the second frame 1.

[0034] See also Figure 2-Figure 4 A locking assembly 5 is provided between the two groups of bottom and back connectors 4, and the locking assembly 5 includes a plug-in column 56. The frame is provided with a plug-in hole suitable for cooperating with the plug-in column 56. When the locking assembly 5 is in a locked state, the plug-in column 56 is inserted into the plug-in hole to realize the mutual expansion of the first frame 3 and the second frame 1. When the locking assembly 5 is in an unlocked state, the plug-in column 56 is disengaged from the plug-in hole to realize the mutual folding of the first frame 3 and the second frame 1.

[0035] See also Figure 5 The locking assembly 5 also includes a pressing cover 52, an oblique pressing block 53 and a sliding block 55. Two groups of oblique pressing blocks 53 are respectively arranged in parallel at the left and right ends of the bottom of the pressing cover 52. The two groups of oblique pressing blocks 53 on the left side are slidably connected with the left sliding block 55, and the two groups of oblique pressing blocks 53 on the right side are slidably connected with the right sliding block 55. When the pressing cover 52 is subjected to pressing force, the pressing cover 52 presses down the oblique pressing blocks 53 to drive the two groups of sliding blocks 55 to approach each other until the plug-in column 56 and the plug-in hole are disengaged from each other, and the locking assembly 5 is in an unlocked state; when the pressing force is removed, the two groups of sliding blocks 55 move away from each other to drive the plug-in column 56 to be inserted into the plug-in hole, and the locking assembly 5 is in a locked state.

[0036] See also Figure 2 and Figure 3Among them, a limiting sleeve 51 is provided at the outer end of the locking component 5, a limiting hole is provided in the center of the top surface of the limiting sleeve 51, a pressure cover 52 is arranged in the limiting hole, a guide column 54 is provided at the bottom of the pressure cover 52, and a return spring is provided at the guide column 54 facing the pressure cover 52 and the left and right groups of sliders 55, which is convenient for pushing the pressure on the locking component 5 to drive the pressure cover 52 and the slider 55 to return quickly after the pressing force is withdrawn. The oblique pressing block 53, the slider 55, the plug-in column 56 and the guide column 54 are all arranged in the limiting sleeve 51.

[0037] A limit seat is provided at the bottom back connector 4 facing the limit sleeve 51 to assist the bottom back connector 4 in fixing the limit sleeve 51 . A through hole is provided at the center of the limit seat facing the plug-in column 56 so that the plug-in column 56 can pass through the through hole and be locked and connected with the plug-in hole.

[0038] See also Figure 1 , and also includes a third frame 2 foldably connected to the first frame 3. The first frame 3 includes two groups of backrest straight tubes 31 arranged at intervals on the left and right. The lower ends of the two groups of backrest straight tubes 31 are respectively foldably connected to the left and right ends of the second frame 1, and the upper ends of the two groups of backrest straight tubes 31 are respectively foldably connected to the left and right ends of the third frame 2.

[0039] Among them, the first frame 3 serves as a vertical force-bearing and supporting bracket, which realizes push-pull control and support setting for the third frame 2 when the folding push cart frame is unfolded and locked. The first frame 3 is connected to the second frame 1 through the bottom back connecting member 4, and then the locking component 5 penetrates the bottom back connecting member 4 to realize the locking of the first frame 3 by the second frame 1, and establishes the support control of the second frame 1 on the first frame 3. The first frame 3 realizes the unfolding or folding control of the third frame 2 through the backrest fixing frame 21. The third frame 2 can be folded on the first frame 3, and then the first frame 3 is folded as a whole on the second frame 1 to complete the overall folding setting of the folding push cart frame.

[0040] See also Figure 1 A plurality of groups of cross bars can be arranged on the second frame 1 and the third frame 2, and wear-resistant sleeves are respectively arranged at the outer ends of the cross bars. The second frame 1 and the third frame 2 realize the support of the objects on their surface ends by arranging the cross bars, so that the second frame 1 and the third frame 2 can place objects with a large contact surface, and the cross bars are protected by the wear-resistant sleeves, thereby extending the service life of the folding stroller frame.

[0041] An armrest 32 is provided in the inner cavity of the backrest straight tube 31, and a rubber sleeve 33 is provided in the middle section of the armrest 32. The top ends of the two groups of backrest straight tubes 31 fix the backrest fixing frame 21, and a locking rod is provided between the two groups of backrest fixing frames 21. The retraction and extension control of the armrest 32 is established through the locking rod. The first frame 3 is sleeved on the lower end tube body of the armrest 32 through the inner cavities of the two groups of backrest straight tubes 31. By pressing the push button provided on the locking rod, the armrest 32 can be controlled to move up and down in the backrest straight tube 31.

[0042] Backrest fixing frames 21 are respectively provided at the rear ends of the left and right sides of the third frame 2 , the backrest fixing frames 21 are connected to the backrest straight pipe 31 , and the backrest fixing frames 21 are hingedly connected to the third frame 2 to realize the folding connection between the third frame 2 and the first frame 3 .

[0043] See also Figure 1 and Figure 6 An active cavity 22 is provided at the bottom of the backrest fixing frame 21, and the rear end of the third frame 2 is hinged in the active cavity 22. When the third frame 2 and the first frame 3 are unfolded with each other, the third frame 2 and the backrest straight tube 31 are perpendicular to each other and the third frame 2 is located in front of the backrest fixing frame 21. When the third frame 2 and the first frame 3 are folded with each other, the third frame 2 and the backrest straight tube 31 are parallel to each other.

[0044] See also Figure 6 and Figure 7 A group of support rods 23 are respectively provided at the left and right ends of the third frame 2, and a vertical movable part is provided at the bottom of the support rod 23, and the vertical movable part is arranged on the backrest straight tube 31. The vertical movable part includes a support connecting part 24, and a movable latch 26 is provided at the outer end of the inner cavity of the support connecting part 24, and a push button 25 is provided at the top of the movable latch 26. The other end of the support rod 23 is hinged to the support connecting part 24.

[0045] Among them, two groups of supporting connectors 24 are arranged on the backrest straight tube 31. Press the push button 25 downward with both hands at the same time to disconnect the movable latch 26 from the backrest straight tube 31, and then the third frame 2 can be stored in front of the backrest straight tube 31.

[0046] Another embodiment of the utility model provides a beach cart, comprising the pushable and pullable folding cart frame as described above.

[0047] The beach cart in this embodiment can set the second frame 1 as a U-shaped stainless steel square tube, set two sets of universal wheels in front of the second frame 1, and set beach wheels behind the second frame 1, so that the beach cart can move stably on the beach. When the user needs to use the beach cart, he can hold the rubber sleeve 33 and pull the first frame 3 to a vertical state. At this time, the plug-in column 56 is inserted into the plug-in hole through the through hole to establish a limit support of the second frame 1 on the first frame 3. After that, the push button 25 can be pressed down and the support connector 24 can be pushed upward to push the third frame 2 to be parallel to the second frame 1 to complete the assembly of the beach cart.

[0048] When the user has finished using the beach stroller, the user presses down the push button 25 at the same time and pushes the supporting connector 24 downward to store the third frame 2 on the first frame 3. The user presses down the pressure cover 52, and the sliders 55 move closer to each other, driving the plug-in columns 56 to close, disconnecting the plug-in columns 56 from the plug-in holes, and pushing the first frame 3 forward to fold the first frame 3 together with the third frame 2 on the second frame 1, thereby completing the storage of the beach stroller.

[0049] Although the disclosure is as above, the protection scope of the disclosure is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the disclosure, and these changes and modifications will fall within the protection scope of the utility model.

Claims

1. A pushable and foldable trolley frame, characterized in that: The invention comprises a first frame (3), a second frame (1) and a bottom-back connecting member (4) movably connected between the first frame (3) and the second frame (1), wherein the first frame (3) is foldably connected to the second frame (1) via the bottom-back connecting member (4); and further comprises a locking assembly (5) movably connected to the bottom-back connecting member (4), wherein when the bottom-back connecting member (4), the first frame (3) and the second frame (1) are locked relative to each other via the locking assembly (5), the first frame (3) and the second frame (1) are unfolded relative to each other; and when the locking assembly (5) is unlocked, the first frame (3) and the second frame (1) are folded relative to each other.

2. The pushable and pullable folding stroller frame according to claim 1, characterized in that: The bottom back connecting members (4) are respectively provided at the lower ends of the left and right sides of the first frame (3); the bottom back connecting members (4) are hingedly connected to the second frame (1) to achieve a folding connection between the first frame (3) and the second frame (1).

3. The pushable and pullable folding stroller frame according to claim 2, characterized in that: The bottom of the bottom back connecting member (4) is provided with a mounting groove (41); the second frame (1) comprises a frame; when the first frame (3) and the second frame (1) are unfolded, the frame is installed in the mounting groove (41); when the first frame (3) and the second frame (1) are folded, the frame is separated from the mounting groove (41).

4. The pushable and pullable folding stroller frame according to claim 3, characterized in that: The locking assembly (5) is provided between the two groups of the bottom and back connecting members (4), and the locking assembly (5) includes a plug-in column (56). The frame is provided with a plug-in hole suitable for cooperating with the plug-in column (56). When the locking assembly (5) is in a locked state, the plug-in column (56) is inserted into the plug-in hole to realize the mutual unfolding of the first frame (3) and the second frame (1); when the locking assembly (5) is in an unlocked state, the plug-in column (56) is disengaged from the plug-in hole to realize the mutual folding of the first frame (3) and the second frame (1).

5. The pushable and pullable folding stroller frame according to claim 4, characterized in that: The locking assembly (5) further comprises a pressing cover (52), an oblique pressing block (53) and a sliding block (55). Two groups of oblique pressing blocks (53) are respectively arranged in parallel at the left and right ends of the bottom of the pressing cover (52). The two groups of oblique pressing blocks (53) on the left side are slidably connected to the left sliding block (55), and the two groups of oblique pressing blocks (53) on the right side are slidably connected to the right sliding block (55). When the pressing cover (52) is subjected to a pressing force, the pressing cover (52) presses down the oblique pressing blocks (53) to drive the two groups of sliding blocks (55) to move closer to each other until the plug-in column (56) and the plug-in hole are disengaged from each other, and the locking assembly (5) is in an unlocked state; when the pressing force is removed, the two groups of sliding blocks (55) move away from each other to drive the plug-in column (56) to be inserted into the plug-in hole, and the locking assembly (5) is in a locked state.

6. The pushable and pullable folding stroller frame according to claim 1, characterized in that: The vehicle further comprises a third frame (2) foldably connected to the first frame (3); the first frame (3) comprises two groups of backrest straight tubes (31) spaced apart from each other on the left and right sides; the lower ends of the two groups of backrest straight tubes (31) are foldably connected to the left and right ends of the second frame (1), respectively; and the upper ends of the two groups of backrest straight tubes (31) are foldably connected to the left and right ends of the third frame (2), respectively.

7. The pushable and pullable folding stroller frame according to claim 6, characterized in that: Backrest fixing frames (21) are respectively provided at the rear ends of the left and right sides of the third frame (2); the backrest fixing frames (21) are connected to the backrest straight pipe (31); the backrest fixing frames (21) are hingedly connected to the third frame (2) to achieve a folding connection between the third frame (2) and the first frame (3).

8. The pushable and foldable stroller frame according to claim 7, characterized in that: A movable cavity (22) is provided at the bottom of the backrest fixing frame (21), and the rear end of the third frame (2) is hinged in the movable cavity (22); when the third frame (2) and the first frame (3) are unfolded, the third frame (2) and the backrest straight tube (31) are perpendicular to each other and the third frame (2) is located in front of the backrest fixing frame (21); when the third frame (2) and the first frame (3) are folded together, the third frame (2) and the backrest straight tube (31) are parallel to each other.

9. The pushable and pullable folding stroller frame according to claim 8, characterized in that: A group of support rods (23) are respectively provided at the left and right ends of the third frame (2), a vertical movable part is provided at the bottom of the support rod (23), and the vertical movable part is arranged on the backrest straight tube (31), and the vertical movable part includes a support connecting part (24), a movable latch (26) is provided at the outer end of the inner cavity of the support connecting part (24), and a push button (25) is provided at the top end of the movable latch (26), and the other end of the support rod (23) is hinged to the support connecting part (24).

10. A beach cart, characterized in that: The invention comprises a pushable and pullable folding stroller frame as claimed in any one of claims 1 to 9.

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