Trolley

Abstract

The trolley comprises a supporting framework and a lining, the supporting framework comprises a bottom supporting frame, four vertical rods, a side blocking frame, a connecting base and a first locking device, the side blocking frame is arranged between every two adjacent vertical rods, a containing space is defined by the side blocking frame and the bottom supporting frame, the lining is matched with the containing space, the lining comprises four side pieces, and the side pieces are arranged on the side blocking frame. The four side pieces are in one-to-one correspondence with the four side blocking frames respectively, at least one side piece is a movable side piece, the movable side piece can be independently curled so that the containing space can be opened on the face where the side piece is located, and the side blocking frame where the movable side piece is located comprises a side blocking rod connected with the movable side piece; the connecting seats are arranged on the two vertical rods corresponding to the side stop levers, each connecting seat comprises a first connecting part, and the two ends of each side stop lever are provided with second connecting parts matched with the corresponding first connecting parts; and when the first locking device is in the locking state, the second connecting part can rotate relative to the first connecting part combined with the second connecting part, so that the disassembly operation of the side stop lever is facilitated.

Description

Technical Field

[0001] This application relates to the technical field of transport devices, specifically a handcart. Background Technology

[0002] Existing handcarts, such as the camping vehicle disclosed in patent document CN218505905U, include a frame and an inner liner attached to the frame. The frame includes two movable side bars arranged front and rear, and side rails arranged left and right. The side bars are detachable from the two uprights. To detach the side bars, the locking devices at both ends of the side bars need to be unlocked, and then force needs to be applied to both ends of the side bars to lift them upwards and detach them from the fixing parts. As can be seen from the attached drawings, if the two ends of the side bars are not lifted simultaneously, they are prone to friction with the corresponding fixing parts, affecting the lifting operation. Furthermore, the unlocking direction of the unlocking part used to unlock the locking device is horizontal, further increasing the inconvenience of detaching the side bars. Utility Model Content

[0003] This application provides a handcart that facilitates the removal of the side guard bar.

[0004] This application provides a handcart, including a support frame and an inner liner, wherein the support frame includes:

[0005] The base support frame is arranged in a rectangular shape;

[0006] Four uprights are respectively installed at the four corners of the base support frame;

[0007] A side support frame is disposed between two adjacent uprights and together with the bottom support frame to form an accommodating space. The inner lining is adapted to the accommodating space. The inner lining includes four side pieces, each of which corresponds to one of the four side supports. At least one of the side pieces is a movable side piece, which can be independently rolled up to open the accommodating space on the side where the side piece is located. The side support frame where the movable side piece is located includes a side support rod connecting the movable side piece.

[0008] A connecting seat is provided on the two uprights corresponding to the side stop. The connecting seat includes a base connected to the upright and a first connecting portion extending outward relative to the base. The two ends of the side stop have second connecting portions provided with the corresponding first connecting portions.

[0009] The first locking device includes a first locking pin disposed on one of the first connecting portion and the second connecting portion, and a first locking groove disposed on the other. In the locked state, the second connecting portion can rotate around the first connecting portion corresponding to the first locking pin.

[0010] Several alternative methods are provided below, but they are not intended as additional limitations on the overall solution above. They are merely further additions or optimizations. Provided there are no technical or logical contradictions, each alternative method can be combined individually with respect to the overall solution above, or multiple alternative methods can be combined with each other.

[0011] Optionally, one of the first connecting portion and the second connecting portion is provided with a locking block protruding from its surface, and the other is provided with a locking groove. The locking block and the locking groove cooperate to restrict the axial separation of the first connecting portion and the second connecting portion.

[0012] Optionally, the card block has a radially protruding flange, and the circumferential side of the card slot has a recessed engaging portion that mates with the flange and an opening that allows the card block to enter and exit.

[0013] Optionally, the flange is an arc structure with the first locking pin as the center, the slot is a U-shaped structure, and the side away from the opening is a semi-circular structure with the first locking pin as the center.

[0014] Optionally, the opening faces downwards.

[0015] Optionally, the first connecting portion extends in a direction parallel to the plane defined by the two uprights, and the first locking pin extends in a direction perpendicular to the plane defined by the two uprights.

[0016] Optionally, the first connecting part extends horizontally, and the first connecting part and the second connecting part are staggered in the direction defined by the plane perpendicular to the two uprights. When the side stop bar is combined with the two connecting seats, the upper surfaces of the first connecting part and the second connecting part are flush.

[0017] Optionally, the handcart includes a first unlocking component that is slidably mounted on the first connecting part in a vertical direction, the first unlocking component being used to drive the first locking pin to switch to the unlocked state;

[0018] The first unlocking member has a first operating part exposed above the first connecting part.

[0019] Optionally, the base is slidably sleeved on the upright and has multiple height positions, and a second locking device is provided between the connecting seat and the upright to keep the connecting seat in the corresponding height position;

[0020] The trolley also includes a second unlocking member that is slidably mounted on the first connecting portion in a vertical direction. The second unlocking member is used to unlock the second locking device and has a second operating portion exposed below the first connecting portion.

[0021] Optionally, the first unlocking member has a locked position and an unlocked position corresponding to the state of the first locking device, and the second unlocking member has a locked position and an unlocked position corresponding to the state of the second locking device;

[0022] The first unlocking member and the second unlocking member are slidably nested together, and a second elastic member is provided between them. The second elastic member acts on the two unlocking members to reset them to the locked position.

[0023] When disassembling the side rail of the handcart of this application, the first locking device at one end of the side rail can be disassembled with one hand or both hands, and then rotated to rotate around the first connecting part at the other end to disengage from the connecting seat at that end, and then the other end of the side rail can be disassembled; of course, both first locking devices can be unlocked at the same time before disassembly, which makes disassembly more convenient. Attached Figure Description

[0024] Figure 1 This is a structural view of the support frame of a handcart according to an embodiment of this application;

[0025] Figure 2 for Figure 1 Structural view of the handcart from another perspective;

[0026] Figure 3 for Figure 1 Structural view of the handcart after the lining has been installed;

[0027] Figure 4 for Figure 1 The structural view of the side stop frame, including the side stop bar;

[0028] Figure 5 for Figure 4 Structural view after the center side stop bar has been completely disassembled;

[0029] Figure 6 for Figure 2 Enlarged view of section A in the middle;

[0030] Figure 7 for Figure 4 Enlarged view of section B in the middle;

[0031] Figure 8 for Figure 7 A structural view from another perspective;

[0032] Figure 9 This is a front view of a handcart according to an embodiment of this application at the side stop;

[0033] Figure 10 for Figure 9 A partial sectional view along the CC direction;

[0034] Figure 11 for Figure 10 A partial cross-sectional view of the first locking device in the middle;

[0035] Figure 12 for Figure 9 A partial sectional view along the DD direction;

[0036] Figure 13 for Figure 12 A partial cross-sectional view of the unlocking second locking device;

[0037] Figure 14 This is an exploded view of the connecting seat of a handcart according to an embodiment of this application;

[0038] Figures 15-17 They are respectively Figure 14 Structural views of the second unlocking component, the first unlocking component, and the transmission component;

[0039] Figure 18 for Figure 3 Structural view of the middle side stop after it slides down.

[0040] The annotations in the figure are explained as follows:

[0041] 1000, Handcart; 100, Support frame; 101, Storage space;

[0042] 110. Base support frame; 120. Upright pole; 120a. Upright pole; 121. Second locking pin; 122. Locking hole;

[0043] 130. Side guard; 131. First side guard; 132. Second side guard;

[0044] 140. Side stop bar; 141. Second connecting part; 1411. First locking groove; 1412. Slot; 1413. Engaging part; 1414. Opening; 142. Straight bar;

[0045] 200. Lining; 210. Side panel; 211. Movable side panel;

[0046] 300, Connecting seat; 310, Base; 320, First connecting part; 320a, First connecting part; 320b, First connecting part; 3201, First locking pin; 3202, Locking block; 3203, Flange;

[0047] 321. Rotation axis; 330. Second locking groove; 340. Transmission component;

[0048] 410. First unlocking component; 411. First operating unit; 420. Second unlocking component; 421. Second operating unit;

[0049] 510, First elastic element; 520, Second elastic element; 530, Third elastic element; 600, Wheel assembly. Detailed Implementation

[0050] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0051] It should be noted that when a component is said to be "connected" to another component, it can be directly connected to the other component or it can be connected to a component in between. When a component is said to be "set on" another component, it can be directly set on the other component or it may be set to a component in between.

[0052] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0053] In this application, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number or order of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0054] First, for ease of description, the term "end" in the text refers to the endpoint of the structure, or a point or region in that lateral direction, or a specific structure connected to that point or region.

[0055] In the existing technology, the connection point between the frame and the handlebar is higher than the hinge point of the handlebar and the front foot, that is, it is generally located in the middle of the seat in the height direction, which makes the connection point more obvious and the appearance of the vehicle body less concise.

[0056] See Figures 1 to 5This application provides a stroller 1000, including a support frame 100 and an inner liner 200. The inner liner 200 is made of a flexible material and can carry a child or items. The support frame 100 includes a base support frame 110, uprights 120, and side rails 130. The base support frame 110 is rectangular, and there are four uprights 120 extending vertically, with the four uprights 120 respectively located at the four corners of the base support frame 110. Side brackets 130 are positioned between two adjacent uprights 120, forming four side brackets 130. The four side brackets 130 and the bottom support 110 together form an accommodating space 101. The lining 200 is adapted to the accommodating space 101, i.e., the bottom support 110 is supported on the bottom of the lining 200. The lining 200 includes four side panels 210, each corresponding to one of the four side brackets 130. At least one side panel 210 is a movable side panel 211, which can be independently rolled relative to the other side panels 210 to open the accommodating space 101 on the side where the side panel is located. The side bracket 130 where the movable side panel 211 is located includes a side stop bar 140 connecting the movable side panel 211. The movable side panel 211 and the side stop bar 140 are sleeved together or detachably connected by Velcro or the like.

[0057] The support frame 100 also includes a connecting seat 300 and a first locking device. The connecting seat 300 is provided on the two uprights 120a corresponding to the side stop 140. The connecting seat 300 includes a base 310 connected to the upright 120 and a first connecting portion 320 extending outward relative to the base 310. The two ends of the side stop 140 have second connecting portions 141 that cooperate with the corresponding first connecting portions 320.

[0058] The first locking device includes a first locking pin 3201 disposed on one of the first connecting portion 320 and the second connecting portion 141, and a first locking groove 1411 disposed on the other to cooperate with the first locking pin 3201. In the locked state, the first locking pin 3201 extends into the first locking groove 1411, and the second connecting portion 141 can rotate around the first connecting portion 320. Figures 2-5 Method for removing the side stop bar 140 and winding the movable side piece 211:

[0059] S100: As Figure 4 As shown, the first locking device corresponding to the first connecting part 320a is unlocked, while the first locking device corresponding to the first connecting part 320b remains locked. The side stop bar 140 is rotated relative to the first connecting part 320b to separate the side stop bar 140 from the first connecting part 320b.

[0060] S200: such as Figure 5 As shown, after unlocking the first locking device corresponding to the first connecting part 320b, the side stop bar 140 is completely removed;

[0061] S300: Then rotate the side stop 140 to wind the movable side piece 211 connected to it.

[0062] This embodiment also provides another method for disassembling the side stop 140 and winding the movable side piece 211:

[0063] S100: Simultaneously unlock both first locking devices and completely remove the side stop lever;

[0064] S200: Rotate the side stop 140 to wind the movable side piece 211 connected thereto.

[0065] The handcart of this application allows for more flexible operation of removing the side stop bar. In particular, the first locking device on one end can be unlocked separately first, and then the side stop bar can be rotated to disengage it from the corresponding connecting seat before removing the other end to complete the disassembly operation, making the operation more convenient.

[0066] See Figures 6 to 11 In one embodiment, one of the first connecting portion 320 and the second connecting portion 141 is provided with a locking block 3202 protruding from its surface, and the other is provided with a locking groove 1412. The locking block 3202 and the locking groove 1412 cooperate to restrict the axial separation of the first connecting portion 320 and the second connecting portion 141 (i.e., the rotation axis 321 described below). Correspondingly, the first locking pin 3201 slides on the rotation axis 321.

[0067] In the figure, the locking block 3202 is disposed on the first connecting part 320 and has a rotation axis 321, and the second connecting part 141 rotates about the rotation axis 321. The locking block 3202 has a radially (relative to the rotation axis 321) protruding flange 3203, and the circumferential side of the locking groove 1412 has a recessed engaging part 1413 that mates with the flange 3203 and an opening 1414 that allows the locking block 3202 to enter and exit.

[0068] In one embodiment, the first connecting portion 320 extends in the direction of the plane defined by the two parallel uprights 120a (hereinafter referred to as the first plane). Preferably, the first connecting portion 320 extends horizontally in the first plane. The side stop 140 includes a horizontally extending straight rod 142 disposed between the two second connecting portions 141, and the movable side piece 211 is connected to the straight rod 142. The first locking pin 3201 extends in the direction perpendicular to the first plane, and the second plane formed by the rotation of the side stop 140 is parallel to the first plane. The first connecting portion 320 and the second connecting portion 141 are staggered in the direction perpendicular to the first plane. When the side stop 140 is engaged with the two connecting seats 300, the upper surfaces of the first connecting portion 320 and the second connecting portion 141 are flush, which facilitates gripping during unlocking operations and results in a simpler appearance.

[0069] After bearing weight, the liner 200 applies a vertically downward force to the side stop 140. In one embodiment, when the first locking device is in the locked state, the opening 1414 faces downward, and the end of the slot 1412 away from the opening 1414 is closed. In the figure, the flange 3203 is an arc structure with the first locking pin 3201 as the center, such as a cylinder. The slot 1412 is a U-shaped structure, and the side away from the opening 1414 is a semi-circular structure with the first locking pin 3201 as the center. This not only enables the rotation of the aforementioned side stop 140, but also facilitates the separation of the other end of the side stop 140 from the corresponding first connecting part 320 at any angle after one end is disassembled.

[0070] In one embodiment, the trolley 1000 further includes a first unlocking member 410 slidably mounted vertically on the first connecting portion 320. The first unlocking member 410 is used to drive the first locking pin 3201 to switch to the unlocked state. The first unlocking member 410 has a first operating portion 411 exposed above the first connecting portion 320. During the unlocking operation, the second connecting portion 141 can be held with one hand, and the thumb can press the first operating portion 411 to instantly lift the second connecting portion 141 and separate it, making the operation more convenient.

[0071] See Figure 3 , Figures 10-18 In one embodiment, the base 310 is slidably sleeved on the upright 120a and has multiple height positions. A second locking device is provided between the connecting seat 300 and the upright 120a to keep the connecting seat 300 in the corresponding height position. The trolley 1000 also includes a second unlocking member 420 slidably mounted vertically on the first connecting portion 320. The second unlocking member 420 is used to unlock the second locking device. The second unlocking member 420 has a second operating portion 421 exposed below the first connecting portion 320, which is distinct from the first operating portion 411 to reduce the probability of accidental operation.

[0072] The first unlocking member 410 has a locked position and an unlocked position corresponding to the state of the first locking device, and the second unlocking member 420 has a locked position and an unlocked position corresponding to the state of the second locking device. The first unlocking member 410 and the second unlocking member 420 are slidably nested together, and a second elastic member 520 is provided between them. The second elastic member 520 acts on the two unlocking members to reset them to the locked position. Of course, the first unlocking member 410 and the second unlocking member 420 are constrained by the first connecting portion 320 to prevent them from disengaging from the first connecting portion 320.

[0073] In the diagram, the trolley 1000 also includes a first elastic element 510 (e.g., a spring). Specifically, when the first unlocking element 410 is in the locked position, it acts on the first locking pin 3201, causing it to extend into the first locking groove 1411 and compressing the first elastic element 510. When the first unlocking element 410 is in the unlocked position, a gap is created between it and the first locking pin 3201. Subsequently, the first elastic element 510 resets and acts on the first locking pin 3201, causing it to exit the first locking groove 1411.

[0074] The second locking device includes a second locking pin 121 disposed in the upright 120a and a second locking groove 330 disposed on the connecting seat 300. The upright 120a is a hollow structure, the second locking pin 121 is a V-shaped spring with a locking pin at one end, and the upright 120a has a plurality of locking holes 122 arranged at intervals along the height direction. The second locking pin 121 is disposed corresponding to the locking holes 122. The locking pin of the second locking pin 121 engages with the locking hole 122 and extends into the second locking groove 330 in the locked state to restrict the sliding of the connecting seat 300.

[0075] The handcart 1000 also includes a transmission member 340 that is horizontally slidably mounted within the first connecting portion 320. A cooperating inclined surface is provided between the second unlocking member 420 and the transmission member 340. Pressing the second unlocking member 420 drives the transmission member 340 to slide via the inclined surface, thereby pushing the second locking pin 121 out of the second locking groove 330 and compressing the second elastic member 520. After releasing the second unlocking member 420, the second elastic member 520 resets. The handcart 1000 also includes a third elastic member 530 (e.g., a spring) that acts on the transmission member 340 to reset and release the push against the second locking pin 121.

[0076] The movable side panel 211 is connected to the adjacent two side panels by a connector, which can be a Velcro, zipper, etc. In the figure, the side support frame 130 includes a first side support frame 131 arranged front to back and a second side support frame 132 arranged left to right. The first side support frame 131 includes a side support bar 140, the second side support frame 132 is a foldable structure, and the bottom support frame 110 is a foldable structure, so that the support frame 100 has a relatively unfolded state and a folded state. In the folded state, the two first side support frames 131 are close to each other.

[0077] In one embodiment, a wheel assembly 600 is mounted on the bottom of the base support 110.

[0078] The operation of removing the side stop lever is more flexible. In particular, the first locking device on one end can be unlocked separately first, and then the side stop lever can be rotated to disengage it from the corresponding connecting seat before the other end can be removed to complete the disassembly operation, making the operation more convenient.

[0079] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combination of these technical features does not contradict each other, it should be considered to be within the scope of this specification. When technical features of different embodiments are embodied in the same drawing, it can be regarded as the drawing also disclosing examples of combinations of the various embodiments involved.

[0080] The above embodiments are merely illustrative of several implementation methods of this application, and their descriptions are quite specific and detailed. However, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these modifications and improvements all fall within the protection scope of this application.

Claims

1. A handcart, characterized in that, Includes a support frame and an inner liner, the support frame comprising: The base support frame is arranged in a rectangular shape; Four uprights are respectively installed at the four corners of the base support frame; A side support frame is disposed between two adjacent uprights and together with the bottom support frame to form an accommodating space. The inner lining is adapted to the accommodating space. The inner lining includes four side pieces, each of which corresponds to one of the four side supports. At least one of the side pieces is a movable side piece, which can be independently rolled up to open the accommodating space on the side where the side piece is located. The side support frame where the movable side piece is located includes a side support rod connecting the movable side piece. A connecting seat is provided on the two uprights corresponding to the side stop. The connecting seat includes a base connected to the upright and a first connecting portion extending outward relative to the base. The two ends of the side stop have second connecting portions that cooperate with the corresponding first connecting portions. The first locking device includes a first locking pin disposed on one of the first connecting portion and the second connecting portion, and a first locking groove disposed on the other. In the locked state, the second connecting portion can rotate around the first connecting portion corresponding to the first locking pin.

2. The handcart according to claim 1, characterized in that, One of the first connecting part and the second connecting part is provided with a locking block protruding from its surface, and the other is provided with a locking groove. The locking block and the locking groove cooperate to restrict the axial separation of the first connecting part and the second connecting part.

3. The handcart according to claim 2, characterized in that, The card block has a radially protruding flange, and the circumferential side of the card slot has a recessed engaging portion that mates with the flange and an opening that allows the card block to enter and exit.

4. The handcart according to claim 3, characterized in that, The flange is an arc structure with the first locking pin as the center, the slot is a U-shaped structure, and the side away from the opening is a semi-circular structure with the first locking pin as the center.

5. The handcart according to claim 3, characterized in that, The opening faces downwards.

6. The handcart according to claim 5, characterized in that, The first connecting portion extends in a direction parallel to the plane defined by the two uprights, and the first locking pin extends in a direction perpendicular to the plane defined by the two uprights.

7. The handcart according to claim 6, characterized in that, The first connecting part extends horizontally, and the first connecting part and the second connecting part are staggered in the direction defined by the plane perpendicular to the two uprights. When the side stop is combined with the two connecting seats, the upper surfaces of the first connecting part and the second connecting part are flush.

8. The handcart according to claim 7, characterized in that, The handcart includes a first unlocking component that is slidably mounted on the first connecting part in a vertical direction. The first unlocking component is used to drive the first locking pin to switch to the unlocked state. The first unlocking member has a first operating part exposed above the first connecting part.

9. The handcart according to claim 8, characterized in that, The base is slidably sleeved on the upright and has multiple height positions, and a second locking device is provided between the connecting seat and the upright to keep the connecting seat in the corresponding height position; The trolley also includes a second unlocking member that is slidably mounted on the first connecting portion in a vertical direction. The second unlocking member is used to unlock the second locking device and has a second operating portion exposed below the first connecting portion.

10. The handcart according to claim 9, characterized in that, The first unlocking member has a locked position and an unlocking position corresponding to the state of the first locking device, and the second unlocking member has a locked position and an unlocking position corresponding to the state of the second locking device; The first unlocking member and the second unlocking member are slidably nested together, and a second elastic member is provided between them. The second elastic member acts on the two unlocking members to reset them to the locked position.

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