A stroller frame and stroller

Abstract

The embodiment of the utility model provides a kind of trolley frame and trolley, it is related to trolley field.The trolley frame includes movable connecting seat, chassis and cross pipe, chassis includes bottom joint, one end of cross pipe is rotatably connected with movable connecting seat, the other end of cross pipe is rotatably connected with bottom joint.When it is needed to prop open trolley frame, press movable connecting seat and make cross pipe push bottom joint to move, since two bottom joints are respectively connected with wheel, cross pipe is rotated to limit position after movable connecting seat, and limit two wheels, avoid trolley frame to occur in when using, and it is more stable to use.The embodiment of the utility model further provides a kind of trolley, and the trolley includes trolley frame.

Description

Technical Field

[0001] This utility model relates to the field of trolleys, and more specifically, to a trolley frame and a trolley. Background Technology

[0002] Trolleys are used for temporary transport of goods, offering advantages such as labor-saving and ease of use, and are widely used in stations, airports, and outdoor activities. Based on whether they are foldable, they can be divided into non-foldable and foldable trolleys, with foldable trolleys further including bundled foldable trolleys.

[0003] The existing folding trolleys can also fold down, but the two rear wheels lack lateral support in the width direction. The distance between the two rear wheels will change during the trolley's movement, causing the trolley frame to fold inward or outward, making it unstable during use. Utility Model Content

[0004] This utility model provides a trolley frame and trolley that can solve the above-mentioned problems.

[0005] The embodiments of this utility model can be implemented as follows:

[0006] An embodiment of this utility model provides a trolley frame, which includes:

[0007] Active connector;

[0008] The base frame includes a bottom joint;

[0009] The horizontal tube has one end rotatably connected to the movable connecting seat and the other end rotatably connected to the bottom connector.

[0010] Optionally, the trolley frame also includes a long tube, and the base frame includes a bottom hinge seat. One end of the long tube is rotatably connected to the bottom hinge seat, and the other end of the long tube is movably connected to a movable connecting seat.

[0011] Optionally, the movable connector is provided with a through-hole, one end of the long tube is accommodated in the hole and can slide along the hole and extend out of the hole.

[0012] Optionally, the movable connecting seat is provided with a slide rod and a through-hole, with both ends of the slide rod connected to the side wall of the through-hole respectively;

[0013] The long tube has an axial through groove along its own axial direction. The slide rod is housed in the axial through groove and can slide along the axial through groove. One end of the long tube with the axial through groove is housed in a locking hole and can slide along the locking hole and extend out of the locking hole.

[0014] Optionally, the movable connector is provided with a hook position, and the end of the long tube is connected to a hook that can hook onto the hook position.

[0015] Optionally, the long tube includes a telescopic inner tube and a telescopic outer tube, one end of which is accommodated in the telescopic outer tube and can slide inside the telescopic outer tube;

[0016] One end of the telescopic inner tube exposed outside the telescopic outer tube is rotatably connected to the bottom hinge seat, and the end of the telescopic outer tube away from the telescopic inner tube is rotatably connected to the movable connecting seat.

[0017] Alternatively, one end of the telescopic inner tube exposed outside the telescopic outer tube is rotatably connected to the movable connecting seat, and the end of the telescopic outer tube away from the telescopic inner tube is rotatably connected to the bottom hinge seat.

[0018] Optionally, the long tube is arranged along the length of the trolley frame, and the horizontal tube is arranged along the width of the trolley frame.

[0019] Optionally, there shall be no fewer than two horizontal tubes, and at least one horizontal tube shall be connected to each side of the movable connecting seat.

[0020] Optionally, there are two horizontal tubes, which are arranged along the width of the trolley frame and are located on both sides of the movable connecting seat.

[0021] Optionally, the two horizontal tubes are arranged along the width of the trolley frame, and the two horizontal tubes form an included angle β, where 0°≤β<180°.

[0022] Optionally, the base frame also includes four bottom tubes and a bottom hinge seat, one end of each of the four bottom tubes being rotatably connected to the bottom hinge seat, and the other end of each of the four bottom tubes being connected to four bottom joints respectively.

[0023] An embodiment of this utility model also provides a trolley, including a trolley frame.

[0024] The beneficial effects of this utility model embodiment:

[0025] The trolley frame includes a movable connecting seat, a base frame, and a cross tube. The base frame includes a bottom joint. One end of the cross tube is rotatably connected to the movable connecting seat, and the other end of the cross tube is rotatably connected to the bottom joint. When the trolley frame needs to be opened, pressing down on the movable connecting seat causes the cross tube to push the bottom joint to move. Since wheels are connected to the two bottom joints respectively, the cross tube rotates around the movable connecting seat to its limit position and then limits the two wheels, preventing the trolley frame from contracting inward or outward during use, thus making it more stable.

[0026] The trolley includes a trolley frame, which has all the functions of a trolley frame. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of this utility model, the 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.

[0028] Figure 1 This is a schematic diagram of the trolley frame when it is unfolded in an embodiment of this utility model;

[0029] Figure 2 This is a schematic diagram of the folding process of the trolley frame provided in the embodiments of this utility model;

[0030] Figure 3 This is a schematic diagram of the structure of the base frame, long tube, and horizontal tube provided in the embodiments of this utility model during the folding process;

[0031] Figure 4 This is a schematic diagram of the structure of the long tube with an axial through groove provided in an embodiment of the present invention;

[0032] Figure 5 This is a schematic diagram of the structure of the hook and the movable connecting seat provided in the embodiment of this utility model;

[0033] Figure 6 This is a schematic diagram of the structure of the long tube provided in the embodiment of this utility model, which has a telescopic inner tube and a telescopic outer tube.

[0034] Icons: 1-Modular connecting seat; 10-Snap hole; 11-Hook connection position; 12-Slide rod; 2-Horizontal tube; 3-Long tube; 30-Hook; 31-Telescopic inner tube; 32-Telescopic outer tube; 33-Axial through groove; 4-Base frame; 40-Bottom hinge seat; 41-Bottom joint; 42-Bottom tube; 5-Vertical tube; 50-Top joint; 51-Sliding connecting seat; 6-Folding tube assembly; 60-First cross tube; 61-Second cross tube; 7-Wheel; 70-Wheel bracket; 8-Pull rod; 80-Rotating rod; 81-Connector; 82-Telescopic rod; 83-Handle. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0036] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0037] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0038] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0039] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0040] The terms “comprising,” “including,” or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase “comprising one…” does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0041] Unless otherwise explicitly specified and limited, terms such as "setup" and "connection" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0042] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.

[0043] Trolleys are used for temporary transport of goods, offering advantages such as labor-saving and ease of use, and are widely used in stations, airports, and outdoor activities. Based on whether they are foldable, they can be divided into non-foldable and foldable trolleys, with foldable trolleys further including bundled foldable trolleys.

[0044] Existing bundled folding trolleys can fold down, but the two rear wheels lack lateral support in the width direction. This causes the distance between the two rear wheels to change during movement, resulting in the trolley frame either folding inwards or outwards, making it unstable during use. Furthermore, the lateral support of the two rear wheels cannot utilize the weight of items on the frame, concentrating the weight of the items in the middle of the frame.

[0045] In view of this, an embodiment of the present invention provides a trolley frame and a trolley, which can solve the above problems, and will be described in detail below.

[0046] Please refer to Figures 1 to 3 The trolley frame includes a movable connecting seat 1, a base frame 4, and a horizontal tube 2. The base frame 4 includes a bottom joint 41. One end of the horizontal tube 2 is rotatably connected to the movable connecting seat 1, and the other end of the horizontal tube 2 is rotatably connected to the bottom joint 41. When the trolley frame needs to be opened, pressing down on the movable connecting seat 1 causes the horizontal tube 2 to push the bottom joint 41 to move. Since wheels 7 are connected to the two bottom joints 41 respectively, the horizontal tube 2 rotates around the movable connecting seat 1 to its limit position and then limits the two wheels 7, preventing the trolley frame from retracting or expanding outward during use, making it more stable.

[0047] Optionally, the trolley frame also includes a long tube 3, and the base frame 4 includes a bottom hinge seat 40. One end of the long tube 3 is rotatably connected to the bottom hinge seat 40, and the other end of the long tube 3 is movably connected to the movable connecting seat 1. Since both ends of the long tube 3 are connected to the bottom hinge seat 40 and the movable connecting seat 1 respectively, when the trolley frame is opened and items are placed on the base frame 4, the weight of the items is transferred to the movable connecting seat 1 through the long tube 3, preventing the movable connecting seat 1 from moving in the height direction of the trolley frame. The movable connecting seat 1 opens the horizontal tube 2. By using the long tube 3 to transfer the weight of the items to the movable connecting seat 1, the position of the movable connecting seat 1 remains relatively stable. The horizontal tube 2 connected to the movable connecting seat 1 also stably opens the rear wheel 7 along with the movable connecting seat 1, preventing the trolley frame from retracting or expanding outward during use. Moreover, the long tube 3 is located between the base frame 4 and the rear wheel 7, increasing the path for the base frame 4 to transmit pressure to the wheel 7 when carrying items, preventing the weight of the items from concentrating in a localized area of ​​the base frame 4. The long tube 3 increases the robustness and reliability of the base frame 4.

[0048] Specifically, the base frame 4 includes a bottom hinge seat 40, four bottom joints 41, and four bottom tubes 42. The bottom hinge seat 40 has five hinge positions. One end of each of the four bottom tubes 42 is hinged to one of the four hinge positions of the bottom hinge seat 40, and the other end of each of the four bottom tubes 42 is hinged to one of the four bottom joints 41. The four bottom tubes 42 are connected by the bottom hinge seat 40 in an "X" shape, and the bottom hinge seat 40 is located in the middle of the base frame 4. The remaining hinge position of the bottom hinge seat 40 is used for hinged connection with the long tube 3.

[0049] Each of the four bottom joints 41 is connected to a wheel 7 via a wheel bracket 70. Specifically, two of the four bottom joints 41 on the same side are connected to the wheel brackets 70 of the two rear wheels 7, and the other two bottom joints 41 are connected to the wheel brackets 70 of the two front wheels 7. Since the wheels 7 and wheel brackets 70 are existing products, their specific structures will not be described in detail.

[0050] Continue to refer to Figure 1 and Figure 2 The movable connecting seat 1 is located between the two rear wheels 7. At least one horizontal tube 2 is hinged to each of the left and right sides of the movable connecting seat 1, thereby opening the two rear wheels 7. In this embodiment, there are two horizontal tubes 2, which are respectively located on the left and right sides of the movable connecting seat 1. The two horizontal tubes 2 are arranged side by side along the width direction of the trolley frame. One end of each horizontal tube 2 is hinged to the movable connecting seat 1, and the other end of each horizontal tube 2 is hinged to the bottom connector 41 on its corresponding side.

[0051] The movable connecting seat 1 has a through-hole 10, which is opened along the length direction of the trolley frame, allowing the long tube 3 to be positioned along the length direction of the trolley frame. One end of the long tube 3 is hinged to the hinge position of the bottom hinge seat 40, and the other end of the long tube 3 passes through the locking hole 10, allowing it to slide along the locking hole 10 and extend out of it. Since the two crossbars are positioned along the width direction of the trolley frame and the long tube 3 is positioned along the length direction of the trolley frame, the long tube 3 is perpendicular to the crossbar 2 when the trolley frame is opened. During the opening or folding of the trolley frame, the long tube 3 will slide within the locking hole 10.

[0052] Optionally, a slide rod 12 and a through-hole 10 can also be provided on the movable connecting seat 1, such as... Figure 4The locking hole 10 is opened along the length direction of the trolley frame, so that the long tube 3 is set along the length direction of the trolley frame. The two ends of the slide rod 12 are respectively connected to the side wall of the locking hole 10. The long tube 3 has an axial through groove 33 along its own axial direction. The axial through groove 33 is located on the side near the movable connecting seat 1. One end of the long tube 3 with the axial through groove 33 is accommodated in the locking hole 10 and can slide along the locking hole 10 and extend out of the locking hole 10. The two ends of the axial through groove 33 may not penetrate the end of the long tube 3. The slide rod 12 passes through the axial through groove 33 and is partially accommodated in the axial through groove 33. The slide rod 12 can slide along the axial through groove 33, thereby realizing the opening or folding of the trolley frame. The axial through groove 33 may also have one end penetrating the end of the long tube 3 and the other end located in the middle of the long tube 3. The slide rod 12 passes through the axial through groove 33 and is partially accommodated in the axial through groove 33. The slide rod 12 can slide along the axial through groove 33, thereby realizing the opening or folding of the trolley frame.

[0053] In this embodiment, two horizontal tubes 2 are arranged side by side along the width of the trolley frame, forming an angle β between them, where 0° ≤ β < 180°. When the trolley frame is in the extended state, the angle β between the two horizontal tubes 2 is less than 180°, and the movable connecting seat 1 and the two horizontal tubes 2 form an arch in the middle. This allows the two horizontal tubes 2 and the movable connecting seat 1 to move upwards when the trolley frame is folded, eliminating the need for manual pulling to control the folding direction. During the folding process, the angle β between the two horizontal tubes 2 gradually decreases to 0°, and the two horizontal tubes 2 become parallel and close together.

[0054] In other embodiments, the long tube 3 can be fixedly connected to the movable connecting seat 1 when the trolley frame is extended. For example, refer to... Figure 5 The movable connecting seat 1 is provided with a hook position 11, and the end of the long tube 3 is connected with a hook 30. The hook 30 can hook onto the hook position 11, so that the position of the long tube 3 and the movable connecting seat 1 is relatively fixed. Even if there are no items placed on the base frame 4, as long as the hook 30 is hooked onto the hook position 11, the two horizontal tubes 2 can stably support the two rear wheels 7.

[0055] Of course, both ends of the long tube 3 can also be rotatably connected to the bottom hinge seat 40 and the movable connecting seat 1, respectively. For example, see reference. Figure 6The long tube 3 includes a telescopic inner tube 31 and a telescopic outer tube 32. One end of the telescopic inner tube 31 is housed in the telescopic outer tube 32 and can slide inside the telescopic outer tube 32. The end of the telescopic inner tube 31 exposed outside the telescopic outer tube 32 is rotatably connected to the bottom hinge seat 40, and the end of the telescopic outer tube 32 away from the telescopic inner tube 31 is rotatably connected to the movable connecting seat 1. Alternatively, the end of the telescopic inner tube 31 exposed outside the telescopic outer tube 32 is rotatably connected to the movable connecting seat 1, and the end of the telescopic outer tube 32 away from the telescopic inner tube 31 is rotatably connected to the bottom hinge seat 40, thereby realizing the opening or folding of the trolley frame. When the trolley frame is opened, the telescopic inner tube 31 slides out along the telescopic outer tube 32. When the trolley frame is folded, the telescopic inner tube 31 slides and retracts along the telescopic outer tube 32.

[0056] Refer again Figure 1 The trolley frame also includes four vertical tubes 5 and a folding tube assembly 6. The four vertical tubes 5 are respectively connected to four bottom joints 41, and the four vertical tubes 5 are arranged along the height direction of the trolley frame. Each of the four vertical tubes 5 has a top joint 50 at its top, and each of the four vertical tubes 5 has a sliding connecting seat 51 slidably fitted on its outer wall.

[0057] A folding tube assembly 6 is provided between two adjacent vertical tubes 5, connecting the two adjacent vertical tubes 5 together. The folding tube assembly 6 includes one or more scissor units. When there are multiple scissor units, they are arranged side by side and rotatably connected. The scissor unit is formed by the intersection and rotatable connection of a first cross tube 60 and a second cross tube 61. When the scissor unit is close to the vertical tube 5, the first cross tube 60 or the second cross tube 61 is hinged to the top connector 50, and the second cross tube 61 or the first cross tube 60 is hinged to the sliding connecting seat 51. The folding tube assembly 6 facilitates the opening and closing of the four vertical tubes 5 and the base frame 4, thereby realizing the rapid opening and closing of the trolley frame. When closing the trolley frame, the sliding connecting seat 51 slides on the vertical tube 5 towards the wheel 7 side. When opening the trolley frame, the sliding connecting seat 51 slides on the vertical tube 5 towards the top connector 50 side.

[0058] The trolley frame in this embodiment is also equipped with a pull rod 8 for the user to push or pull. The pull rod 8 includes two rotating rods 80, a connector 81, a telescopic rod 82, and a handle 83. The top end of the telescopic rod 82 is connected to the handle 83, and the bottom end of the telescopic rod 82 is rotatably connected to the connector 81. The connector 81 is located on the front side of the middle of the two front wheels 7. One end of each of the two rotating rods 80 is rotatably connected to the connector 81, and the other end of each of the two rotating rods 80 is hinged to the bottom joint 41 on its corresponding side. When the trolley frame needs to be folded, the telescopic rod 82 is pulled up to make the two rotating rods 80 rotate around the connector 81 and move closer together, thereby driving the two front wheels to move closer together; when the trolley frame needs to be opened, the telescopic rod 82 is pressed down to make the two rotating rods 80 push the two front wheels apart.

[0059] It is understood that, since the trolley frame of this embodiment has the pull rod 8 positioned at the front of the trolley frame and the rotating rod 80 positioned between the two front wheels 7, when the connecting member 81 spreads the two rotating rods 80, it spreads the two front wheels 7, keeping the distance between the two front wheels 7 constant and preventing the distance between the two front wheels 7 from changing. Therefore, in this embodiment, only the movable connecting seat 1, the horizontal tube 2, and the long tube 3 are arranged between the two rear wheels 7 of the trolley frame; however, in other embodiments, the movable connecting seat 1, the horizontal tube 2, and the long tube 3 can also be arranged between the two front wheels 7 of the trolley frame to prevent the two front wheels 7 from tending to move closer or further apart when driving.

[0060] The trolley frame of this utility model embodiment, by setting a horizontal tube 2, a movable connecting seat 1 and a horizontal tube 2, avoids the frame from retracting or expanding outward during use, has high stability, and also helps to increase the sturdiness and reliability of the base frame 4.

[0061] An embodiment of this utility model also provides a trolley, including the trolley frame described above, which has all the functions of a trolley frame.

[0062] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A cart frame, characterized in that, include: Active connector (1); The base frame (4) includes a bottom joint (41) and a bottom hinge seat (40). A horizontal tube (2), one end of which is rotatably connected to the movable connecting seat (1), and the other end of which is rotatably connected to the bottom connector (41); The long tube (3) has one end rotatably connected to the bottom hinge seat (40) and the other end movably connected to the movable connecting seat (1).

2. The trolley frame according to claim 1, characterized in that, The movable connecting seat (1) is provided with a through hole (10), and one end of the long tube (3) is accommodated in the hole (10) and can slide along the hole (10) and extend out of the hole (10).

3. The trolley frame according to claim 1, characterized in that, The movable connecting seat (1) is provided with a slide rod (12) and a through hole (10), and the two ends of the slide rod (12) are respectively connected to the side wall of the hole (10); The long tube (3) has an axial through groove (33) along its own axial direction. The slide rod (12) is partially accommodated in the axial through groove (33) and the slide rod (12) can slide along the axial through groove (33). One end of the long tube (3) with the axial through groove (33) is accommodated in the locking hole (10) and can slide along the locking hole (10) and extend out of the locking hole (10).

4. The trolley frame according to claim 1, characterized in that, The movable connecting seat (1) is provided with a hook position (11), and the end of the long tube (3) is connected with a hook (30), which can hook onto the hook position (11).

5. The trolley frame according to claim 1, characterized in that, The long tube (3) includes a telescopic inner tube (31) and a telescopic outer tube (32). One end of the telescopic inner tube (31) is housed in the telescopic outer tube (32) and can slide inside the telescopic outer tube (32). The end of the telescopic inner tube (31) exposed outside the telescopic outer tube (32) is rotatably connected to the bottom hinge seat (40), and the end of the telescopic outer tube (32) away from the telescopic inner tube (31) is rotatably connected to the movable connecting seat (1). Alternatively, one end of the telescopic inner tube (31) exposed outside the telescopic outer tube (32) is rotatably connected to the movable connecting seat (1), and one end of the telescopic outer tube (32) away from the telescopic inner tube (31) is rotatably connected to the bottom hinge seat (40).

6. The trolley frame according to claim 1, characterized in that, The long tube (3) is arranged along the length direction of the trolley frame, and the horizontal tube (2) is arranged along the width direction of the trolley frame.

7. The trolley frame according to claim 1, characterized in that, The number of the horizontal tubes (2) is not less than two, and at least one of the horizontal tubes (2) is connected to each side of the movable connecting seat (1).

8. The trolley frame according to claim 7, characterized in that, The number of the horizontal tubes (2) is two. The two horizontal tubes (2) are arranged along the width direction of the trolley frame, and the two horizontal tubes (2) are respectively located on both sides of the movable connecting seat (1).

9. The trolley frame according to claim 8, characterized in that, The two horizontal tubes (2) are arranged along the width direction of the trolley frame, and the two horizontal tubes (2) form an included angle β, where 0°≤β<180°.

10. The trolley frame according to any one of claims 1-9, characterized in that, The base frame (4) also includes four bottom tubes (42) and a bottom hinge seat (40). One end of each of the four bottom tubes (42) is rotatably connected to the bottom hinge seat (40), and the other end of each of the four bottom tubes (42) is connected to one of the four bottom joints (41).

11. A trolley, characterized in that, Includes the cart frame as described in any one of claims 1-10.

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