Seat trolley

Abstract

The utility model discloses a seat handcart, including left and right symmetry's two handrail frame and foldable backrest frame, foldable chassis, the left and right ends of backrest frame are personally experienced sth, are personally experienced sth respectively with two handrail frame's rear side swing joint, the left and right ends of chassis are personally experienced sth respectively with two handrail frame's lower end swing joint, the bottom of handrail frame is equipped with gyro wheel. The whole handcart is through backrest frame, two handrail frame combination chassis whole seat's structure, when using, need not to cross or elevate article, and the person and article are more convenient.

Description

Technical Field

[0001] This utility model belongs to the technical field of handcarts, specifically relating to a seated handcart. Background Technology

[0002] Handcarts are commonly used in daily life and work to move items. They are often used for short distances or small quantities of goods. Ordinary handcarts are quite flexible and can be used in environments where motor vehicles are inconvenient. With the improvement of economic level, people are using handcarts more and more frequently for outdoor leisure and entertainment.

[0003] Traditional handcarts mostly consist of a bottom and four sides above the bottom. Because the sides are relatively high, children need to climb over the top of the sides to get into the cart when they are outdoors for leisure. Moving items also requires manual lifting of the items above the side height before they can be stored in the cart. Therefore, traditional handcarts are still not convenient enough for outdoor leisure and entertainment, and they still have shortcomings when carrying people and goods. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a chair trolley.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a seat trolley, comprising two symmetrical armrest frames, a foldable backrest frame, and a foldable base frame. The left and right ends of the backrest frame are movably connected to the rear sides of the two armrest frames, and the left and right ends of the base frame are movably connected to the lower ends of the two armrest frames. The bottom of the armrest frames is provided with rollers.

[0006] Furthermore, a retractable pull rod is provided on the outer side of any handrail frame; the rollers on the side of the handrail frame with the pull rod are universal wheels with brakes.

[0007] Furthermore, the handrail frame includes a frame formed by a front vertical tube, a rear vertical tube, a handrail tube, and a lower horizontal tube. The front and rear ends of the handrail tube are respectively connected to the upper end of the front vertical tube and the upper middle end of the rear vertical tube, and the connection between the front end of the handrail tube and the front vertical tube is rounded.

[0008] Furthermore, the backrest frame includes two back tubes and a central hinge seat. The inner sides of the two back tubes are movably connected to the left and right ends of the upper side of the central hinge seat, respectively, and the outer sides of the two back tubes are movably connected to the rear sides of the two armrest frames, respectively. The lower side of the central hinge seat is movably connected to the base frame.

[0009] Furthermore, the central hinge seat includes two side tubes arranged in a figure-eight shape and a horizontal tube connecting the two side tubes. The upper and lower sides of the side tubes are respectively movably connected to the inner side of the back tube and the side of the base frame.

[0010] Furthermore, the base frame includes two symmetrical support frames and a base. The base includes a central tube and two connectors respectively located at the front and rear ends of the central tube. The left and right ends of the connectors are movably connected to the inner sides of the two support frames, and the outer sides of the two support frames are movably connected to the two handrail frames.

[0011] Furthermore, the support frame includes an upper and lower two-layer structure, with the outer tube of the upper bottom frame and the bottom tube of the lower layer arranged parallel to each other and movably connected to the connecting parts.

[0012] Furthermore, the connector is a U-shaped piece with the opening facing downwards, and a protective cover is provided at one end of the bottom tube. The outer tube and the bottom tube, together with the protective cover, extend into the opening and are riveted to the connector. When folded, the outer tube and the bottom tube move towards the lower end of the opening.

[0013] Furthermore, the connector is provided with an arc-shaped sliding groove, and the lower end of the protective cover is provided with a lug with a shaft hole. The pin passes through the arc-shaped sliding groove and the shaft hole. When the bottom tube and the protective cover move towards the lower end of the opening, the pin slides along the arc-shaped sliding groove.

[0014] Furthermore, the upper surface of the connector is provided with a first notch.

[0015] Furthermore, the handrail frame also includes an upward-facing hinge, one end of which is fixed to the lower end of the handrail frame, and the upper and lower sides of the other end are respectively riveted to the outer tube of the upper bottom frame and the bottom tube of the lower bottom frame. The bottom surface of the hinge is provided with a second notch.

[0016] Furthermore, it also includes a fabric cover placed on the base frame. The fabric cover includes a bottom surface and four sides located above the bottom surface. The front side is independent and its two sides are detachably connected to the left and right sides. The other three sides are connected. The outer side of the fabric cover is provided with several connecting parts for detachable connection with the armrest frame, backrest frame and base frame.

[0017] The beneficial effects of this utility model are as follows: The entire trolley, through the backrest frame, two armrest frames, and the base frame, forms a seat-like structure. It eliminates the need for stepping over or lifting, making it more convenient for carrying people and goods. Passengers, such as children, can sit directly on the base frame without climbing too high. The backrest frame provides a backrest function, while the armrest frames also function as armrests, giving users a seat-like experience. Users can sit and rest, enjoy the outdoor scenery, and enhance leisure and entertainment. Both the base frame and backrest frame are foldable, allowing for easy carrying when not in use, reducing space occupation and making it convenient and quick to transport. Attached Figure Description

[0018] Figure 1It is a three-dimensional chair trolley Figure 1 ;

[0019] Figure 2 It is a three-dimensional chair trolley Figure 2 ;

[0020] Figure 3 It is a side view of the chair trolley;

[0021] Figure 4 It is a three-dimensional base frame Figure 1 ;

[0022] Figure 5 It is a three-dimensional base frame Figure 2 ;

[0023] Figure 6 This is a diagram showing the disassembled state of the connector and the bottom pipe;

[0024] Figure 7 This is a schematic diagram of a fabric cover.

[0025] In the diagram: 1. Handrail frame, 11. Front vertical tube, 12. Rear vertical tube, 13. Handrail tube, 14. Lower horizontal tube, 15. Hinge, 15a. Second notch, 2. Backrest frame, 21. Back tube, 22. Middle hinge seat, 23. Side tube, 24. Horizontal tube, 3. Base frame, 31. Support frame, 32. Base, 33. Center tube, 34. Connector, 34a. Arc-shaped groove, 34b. First notch, 34c. Through hole, 35. Bottom frame, 35a. Outer tube, 35b. Connecting tube, 36. Bottom tube, 37. Protective cover, 37a. Lug, 37b. Limiting part, 37c. Shaft hole, 4. Roller, 5. Tie rod, 6. Fabric cover, 61. Bottom surface, 62. Front side surface, 63. Left side surface, 64. Right side surface, 65. Rear side surface, 71. Connecting part one, 72. Connecting part two, 73. Connecting part three, 74. Connecting part four, 75. Connecting part five, 76. Connecting part six, 77. Connecting part seven. Detailed Implementation

[0026] The specific solutions and embodiments of this utility model will be further described in conjunction with the accompanying drawings, making the technical solution clearer and more understandable.

[0027] like Figures 1 to 7 The chair trolley shown includes two symmetrical armrest frames 1, a foldable backrest frame 2, and a foldable base frame 3. The left and right ends of the backrest frame 2 are movably connected to the rear of the two armrest frames 1, respectively. The left and right ends of the base frame 3 are movably connected to the lower ends of the two armrest frames 1, respectively. The bottom of the armrest frame 1 is provided with rollers 4.

[0028] A retractable pull rod 5 is provided on the outside of one of the handrail frames 1; the roller 4 on the side of the handrail frame with the pull rod 5 is a universal wheel with brake.

[0029] The handrail frame 1 comprises a frame formed by a front vertical tube 11, a rear vertical tube 12, a handrail tube 13, and a lower horizontal tube 14. The front and rear ends of the handrail tube 13 are connected to the upper ends of the front vertical tube 11 and the upper middle ends of the rear vertical tube 12, respectively, and the connection between the front end of the handrail tube 13 and the front vertical tube 11 is rounded. The handrail tube 13 and the front vertical tube 11 are integrally formed bent tubes, and the connection between them is rounded, which improves the comfort of the user's hand grip. The lower end of the pull rod 5 is movably riveted to the middle of the lower horizontal tube 14 and can rotate back and forth, so that the pull rod 5 can be shortened and rotated closer to the handrail frame 1, reducing its size.

[0030] The backrest frame 2 includes two back tubes 21 and a central hinge seat 22. The inner sides of the two back tubes 21 are movably connected to the left and right ends of the upper side of the central hinge seat 22, respectively, and the outer sides of the two back tubes 21 are movably connected to the rear sides of the two armrest frames 1, respectively. The lower side of the central hinge seat 22 is movably connected to the base frame 3.

[0031] The central hinge seat 21 includes two side tubes 23 arranged in a figure-eight shape and a horizontal tube 24 connecting the two side tubes. The upper and lower sides of the side tubes 23 are movably connected to the inner side of the back tube 21 and the side of the base frame 3, respectively.

[0032] The base frame 3 includes two symmetrical support frames 31 and a base 32. The base 32 includes a central tube 33 and two connectors 34 located at the front and rear ends of the central tube, respectively. The left and right ends of the connectors 34 are movably connected to the inner sides of the two support frames 31, and the outer sides of the two support frames 31 are movably connected to the two armrest frames 1. Preferably, two parallel central tubes 33 are used. The lower ends of the side tubes 23 in the backrest frame 2 are movably riveted to the connectors 34. One central tube 33 or two parallel central tubes 33 are used.

[0033] The support frame 31 comprises an upper and lower two-layer structure. The outer tube 35a of the upper bottom frame 35 is arranged parallel to the bottom tube 36 of the lower layer and is movably connected to the connector 34. Specifically, a through hole 34c is opened on the upper and lower sides of the connector 34, and the movable riveting is achieved by rivets passing through the through hole 34c, the through hole on the outer tube 35a, or the through hole on the bottom tube 36. The bottom frame 35 includes two symmetrical outer tubes 35a and a number of connecting tubes 35b arranged longitudinally and transversely between the two outer tubes.

[0034] The connector 34 is a U-shaped part with the opening facing downwards. One end of the bottom tube 36 is provided with a protective cover 37. The outer tube 35a, the bottom tube 36 and the protective cover 37 are inserted into the opening and riveted to the connector 34 respectively. When folded, the outer tube 35a and the bottom tube 36 move towards the lower end of the opening.

[0035] The connector 34 is provided with an arc-shaped sliding groove 34a, and the lower end of the protective cover 37 is provided with a lug 37a. The lug 37a has a shaft hole 37c. The pin passes through the arc-shaped sliding groove 34a and the shaft hole 37c. When the bottom tube 36 and the protective cover 37 move to the lower end of the opening, the pin slides along the arc-shaped sliding groove 34a.

[0036] The upper surface of the connector 34 is provided with a first notch 34b.

[0037] The handrail frame 3 also includes an upward-facing hinge 15, preferably a U-shaped structure. One end of the hinge 15 is fixed to the lower end of the handrail frame 1, specifically the lower horizontal tube 14, and the upper and lower sides of the other end are respectively riveted to the outer tube 35a of the upper bottom frame and the bottom tube 36 of the lower layer. The bottom surface of the hinge 15 is provided with a second notch 15a.

[0038] The protective cover 37 has a limiting part 37b at its front end. When the base frame 3 is unfolded, the two limiting parts 37b on the left and right sides abut against each other. The protective cover 37 also adopts a U-shaped structure with the opening facing downward. One end of the bottom tube 36 extends into the protective cover 37 until it connects with the limiting part 37b. The connection is achieved by rivets passing through the through hole at one end of the bottom tube 36, the through hole on the protective cover 37, and the through hole 34c on the lower side of the connector 34.

[0039] When folding, in the base frame 3, the central tube 33 of the base 32 is pulled upward, causing the inner sides of the two base frames 3 on the front and rear sides of the central tube to move upward, and the inner sides of the outer tube 35a and the bottom tube 36 to rotate downward towards the connector 34. The pin on the lug 37a at the lower end of the protective cover 37 on the bottom tube 36 slides in the arc-shaped groove 34a. The outer sides of the outer tube 35a and the bottom tube 36 rotate upward relative to the hinge 38, ultimately achieving the folding of the two base frames 3 towards the center. In the backrest frame 2, the horizontal tube 24 in the middle hinge seat 22 is pulled upward, causing the two back tubes 21 to rotate and converge relative to the upper end of the middle hinge seat 22. The lower end of the middle hinge seat 22 rotates relative to the connector 34, achieving the folding of the backrest frame 2, ultimately causing the two armrest frames 1 to move closer towards the center.

[0040] This trolley also includes a fabric cover 6 placed on the base frame 3. The fabric cover includes a bottom surface 61 and four sides above the bottom surface 61. The front side 62 is independent and detachably connected to the left side 63 and right side 64 on both sides. The other three sides are connected. The outer side of the fabric cover 6 has several connecting parts for detachable connection to the armrest frame 1, backrest frame 2, and base frame 3. The connecting parts include various common shapes or structures, such as sleeves, fabric strips, zippers, Velcro, etc. In one state, when the front side 62 is folded inward independently onto the bottom surface 61, it can be used as a seat for people to sit on or for easy transport of items. In another state, the front side 62 is connected to the left side 63 and right side 64, so that the four sides are connected together, facilitating the pushing of the trolley for transport after items are stored.

[0041] In a specific example, the connecting part 71 on the left and right sides of the rear side 65 is a sleeve that fits onto the upper end of the rear vertical tube 12. The outer side of the rear side 65 is a connecting part 75 with an open lower end. The connecting part 75 is a folded fabric piece with Velcro sewn to the rear side 65 at one end, and wrapped around the back tube 21 after being folded. The connecting part 72 on the upper side of the left side 63 and the right side 64 is a folded fabric piece with Velcro, which is fixed by wrapping around the handrail tube 13. The connecting part 72 is provided on the front and rear vertical edges respectively. 3. A folded fabric piece with Velcro is used to fold and wrap around the lower ends of the front vertical tube 11 and the rear vertical tube 12. The connecting part 4 74 on the bottom surface 61 consists of one or two strips of fabric with Velcro, which wrap around and fix the central tube 33. The connecting part 6 76 at the top of the left and right edges of the front side 62 uses strips of fabric with Velcro to wrap around the upper end of the front vertical tube 11. The connecting part 7 77 between the left and right edges of the front side 62 and the edges of the left side 63 and the right side 64 uses a zipper to connect the edges of the two sides together.

[0042] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A chair trolley, characterized in that, It includes two symmetrical armrest frames, a foldable backrest frame, and a foldable base frame. The left and right ends of the backrest frame are movably connected to the rear of the two armrest frames, and the left and right ends of the base frame are movably connected to the lower ends of the two armrest frames. The bottom of the armrest frame is equipped with rollers.

2. The chair trolley according to claim 1, characterized in that, A retractable pull rod is provided on the outer side of any handrail frame; the rollers on the side of the handrail frame with the pull rod are universal wheels with brakes.

3. The chair trolley according to claim 1, characterized in that, The handrail frame includes a frame formed by a front vertical tube, a rear vertical tube, a handrail tube, and a lower horizontal tube. The front and rear ends of the handrail tube are respectively connected to the upper end of the front vertical tube and the upper middle end of the rear vertical tube, and the connection between the front end of the handrail tube and the front vertical tube is rounded.

4. The chair trolley according to claim 1, characterized in that, The backrest frame includes two back tubes and a central hinge seat. The inner sides of the two back tubes are movably connected to the left and right ends of the upper side of the central hinge seat, respectively, and the outer sides of the two back tubes are movably connected to the rear sides of the two armrest frames, respectively. The lower side of the central hinge seat is movably connected to the base frame.

5. The chair trolley according to claim 4, characterized in that, The central hinge seat includes two side tubes arranged in a figure-eight shape and a horizontal tube connecting the two side tubes. The upper and lower sides of the side tubes are movably connected to the inner side of the back tube and the side of the base frame, respectively.

6. The chair trolley according to claim 1, characterized in that, The base frame includes two symmetrical support frames and a base. The base includes a central tube and two connectors located at the front and rear ends of the central tube, respectively. The left and right ends of the connectors are movably connected to the inner sides of the two support frames, and the outer sides of the two support frames are movably connected to the two handrail frames, respectively. The support frame includes an upper and lower two-layer structure. The outer tube of the upper bottom frame is arranged parallel to the bottom tube of the lower layer and is movably connected to the connectors.

7. The chair trolley according to claim 6, characterized in that, The connector is a U-shaped piece with the opening facing downwards. One end of the bottom tube is provided with a protective cover. The outer tube and the bottom tube, together with the protective cover, extend into the opening and are riveted to the connector. When folded, the outer tube and the bottom tube move towards the lower end of the opening.

8. The chair trolley according to claim 7, characterized in that, The connector is provided with an arc-shaped groove, and the lower end of the protective cover is provided with a lug with a shaft hole. The pin passes through the arc-shaped groove and the shaft hole. When the bottom tube and the protective cover move to the lower end of the opening, the pin slides along the arc-shaped groove. Alternatively, the upper surface of the connector is provided with a first notch.

9. The chair trolley according to claim 6, characterized in that, The handrail frame also includes an upward-facing hinge. One end of the hinge is fixed to the lower end of the handrail frame, and the upper and lower sides of the other end are respectively riveted to the outer tube of the upper bottom frame and the bottom tube of the lower bottom frame. The bottom surface of the hinge is provided with a second notch.

10. The chair trolley according to claim 1, characterized in that, It also includes a fabric cover placed on the base frame. The fabric cover includes a bottom surface and four sides above the bottom surface. The front side is independent and its two sides are detachably connected to the left and right sides. The other three sides are connected. The outer side of the fabric cover is provided with several connecting parts for detachable connection with the armrest frame, backrest frame and base frame.

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