Dual-purpose trolley frame and dual-purpose trolley

Abstract

The utility model discloses a dual-purpose trolley frame and a dual-purpose trolley. The dual-purpose trolley frame comprises a U-shaped push rod, a front supporting rod, a rear supporting rod, a U-shaped support, a first bottom rod, a first unlocking assembly and a second unlocking assembly. The first unlocking assembly comprises a first rotating disc, a second rotating disc, a third rotating disc, a fourth rotating disc and a gear disc, the U-shaped push rod is connected with the first rotating disc, the U-shaped support is connected with the second rotating disc, the front supporting rod is connected with the third rotating disc, the rear supporting rod is connected with the fourth rotating disc, and the gear disc can be clamped with gear clamping grooves of the first rotating disc and the third rotating disc at the same time. The gear disc can move out of the gear clamping groove of the first rotating disc and is only clamped with the gear clamping groove of the third rotating disc; the second unlocking assembly comprises an unlocking box, a sliding piece and an unlocking piece, a long sliding hole is formed in one end of the unlocking piece, the U-shaped support penetrates through the long sliding hole, and the other end of the unlocking piece penetrates through the first bottom rod; one end of the sliding piece abuts against the U-shaped support, and a spring is arranged between the end, away from the U-shaped support, of the sliding piece and the first bottom rod.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of handcart, concretely relates to a dual -purpose handcart frame and dual -purpose handcart. BACKGROUND

[0002] The child handcart is a kind of travel tool car designed for children, and it is convenient for parents to carry baby to travel, but its structure and function are usually limited to child riding and simple pushing;And luggage car is designed for outdoor activities, can load more articles, meet the needs of camping, picnic and other outdoor activities.However, the existing handcart product cannot realize the switching between the functions of the two, and users often need to buy two different types of handcart to meet different needs, which not only increases the economic burden, but also brings many inconveniences in storage and use.

[0003] In view of the above-mentioned deficiencies of prior art, the market urgently needs a handcart that can flexibly switch functions, which can meet the needs of children traveling and adapt to the needs of outdoor camping and other activities.Therefore, the present application proposes a dual-purpose handcart frame and dual-purpose handcart, which aims to solve the problem of single function of existing handcart and cannot meet the diversified needs. SUMMARY

[0004] The technical problem to be solved by the utility model is that, in view of the above-mentioned deficiencies of prior art, a dual-purpose handcart frame and dual-purpose handcart are proposed.

[0005] To achieve its purpose, the utility model adopts the following technical scheme:

[0006] A dual-purpose handcart frame, comprising: a U-shaped push rod, a front support rod, a rear support rod, a U-shaped support, a first bottom rod, a first unlocking assembly and a second unlocking assembly;

[0007] The first unlocking assembly comprises a first rotating disc, a second rotating disc, a third rotating disc, a fourth rotating disc and a gear disc, the U-shaped push rod is connected with the first rotating disc at both ends, the U-shaped support is connected with the second rotating disc at both ends, the front support rod is connected with the third rotating disc, the rear support rod is connected with the fourth rotating disc, and the first rotating disc, the second rotating disc, the third rotating disc and the fourth rotating disc are sequentially buckled and installed from inside to outside;The middle part of the first rotating disc and the third rotating disc is respectively provided with a gear clamping groove for clamping the gear disc, the gear disc can be clamped with the gear clamping grooves of the first rotating disc and the third rotating disc at the same time, and the gear disc can be moved out of the gear clamping groove of the first rotating disc and only clamped with the gear clamping groove of the third rotating disc;

[0008] The bottom ends of the two front support rods are connected with the first bottom rod;

[0009] The second unlocking assembly is rotatably arranged between the U-shaped support and the first bottom rod, the second unlocking assembly comprises an unlocking box, a sliding piece and an unlocking sheet arranged inside the unlocking box, the unlocking sheet is arranged on both sides of the sliding piece, one end of the unlocking sheet is provided with a long sliding hole, the U-shaped support penetrates through the long sliding hole, and the other end of the unlocking sheet penetrates through the first bottom rod; one end of the sliding piece is abutted against the U-shaped support, and a spring is arranged between the other end of the sliding piece away from the U-shaped support and the first bottom rod.

[0010] Preferably, the first unlocking assembly further comprises a first unlocking key, a pull rope and a disc, the first unlocking key is arranged at the middle of the top end of the U-shaped push rod, the pull rope is arranged inside the U-shaped push rod, and the disc is rotatably arranged in a containing cavity on one side of the gear disc close to the first rotating disc; one end of the pull rope is connected with the first unlocking key, and the other end of the pull rope is connected with the disc.

[0011] The end face of the disc towards the first rotating disc is provided with a bevel groove, and the inner side of the first rotating disc is provided with a bevel protrusion, and the bevel protrusion is located in the bevel groove.

[0012] Preferably, the second unlocking assembly further comprises a second unlocking key, the second unlocking key is symmetrically arranged on both sides of the unlocking box, a spring is arranged between the two second unlocking keys, the unlocking sheet is provided with a first groove with the same width as the second unlocking key, the second unlocking key can slide in the first groove and above the sliding piece, and the second unlocking key is provided with a second groove.

[0013] Preferably, the first unlocking assembly further comprises a tooth block, the third rotating disc is symmetrically provided with a tooth block mounting groove, the tooth block is mounted in one of the tooth block mounting grooves, one end of the tooth block with a clamping tooth is provided with a spring, and the other end of the spring is abutted against the groove wall of the tooth block mounting groove; the outer side of the tooth block mounting groove is provided with a tooth block clamping groove.

[0014] The fourth rotating disc is provided with a clamping ring, and the clamping ring is symmetrically provided with a tooth block clamping groove;

[0015] The clamping tooth on the tooth block can be clamped with the tooth block clamping grooves on the third rotating disc and the clamping ring at the same time, and the clamping tooth on the tooth block can be moved out of the tooth block clamping groove of the third rotating disc and only clamped with the tooth block clamping groove on the clamping ring.

[0016] Preferably, the second rotating disc is internally provided with a ring, and the end face of the ring is symmetrically provided with a protrusion;

[0017] One end of the tooth block away from the clamping tooth is provided with a protrusion, and the protrusion on the tooth block is abutbed against the end face of the ring.

[0018] As preferred, the rear support rod is hingedly connected with a first connecting rod and a second connecting rod, the U-shaped push rod is sleeved with a first sleeve, the first connecting rod is hingedly connected with the first sleeve at one end away from the rear support rod, the front support rod is sleeved with a second sleeve, and the second connecting rod is hingedly connected with the second sleeve at one end away from the rear support rod.

[0019] As preferred, the U-shaped push rod is provided with limiting holes at two sides, and the limiting holes are internally provided with limiting assemblies, the limiting assembly comprises a limiting key, and the limiting key can enter or move out of the limiting hole.

[0020] As preferred, the limiting assembly further comprises a limiting seat, a pulling block and a pin shaft, the limiting seat is fixed in the U-shaped push rod, the pulling block is located in the limiting seat, a spring is arranged between the pulling block and the limiting seat, and the limiting key is fixed on one side of the pulling block.

[0021] The limiting seat is provided with an L-shaped sliding hole, the pulling block is provided with an inclined sliding hole, the pin shaft penetrates through the L-shaped sliding hole and the inclined sliding hole, and the pin shaft is connected with a pulling rope.

[0022] As preferred, the first bottom rod is provided below with a second bottom rod, the second bottom rod is provided with a plug-in pipe, and a pulling rod is plugged in the plug-in pipe.

[0023] A dual-purpose trolley, which adopts the trolley frame described above, and a seat pocket is mounted on the U-shaped push rod and the U-shaped support.

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

[0025] (1) diversified functions: the first unlocking assembly and the second unlocking assembly are designed skillfully, so that the trolley frame can be flexibly switched to a child trolley state and a luggage trolley state, thereby meeting the diversified needs of users in different scenes, without the need to purchase two different types of trolleys, which saves economic cost and facilitates storage and use.

[0026] (2) simple and stable structure: the frame is composed of a U-shaped push rod, a front support rod, a rear support rod, a U-shaped support, a first bottom rod and the like, and the connection and unlocking between the components are realized through the first unlocking assembly and the second unlocking assembly, so that the overall structure is simple, easy to manufacture and maintain; meanwhile, through the design of the first connecting rod, the second connecting rod and the limiting assembly, the frame in the luggage trolley state is more stable and reliable, and the pushing is more smooth.

[0027] (3) convenient operation: the user only needs to press the first unlocking key and the second unlocking key to easily realize the unlocking and state switching of the frame, which is simple and convenient to operate without the need for complex steps or tools.

[0028] (4) wide applicability: the dual-purpose trolley frame and the dual-purpose trolley of the utility model are suitable for children of different ages and different outdoor activities, and have wide applicability and market prospect. BRIEF DESCRIPTION OF DRAWINGS

[0029] For ease of illustration, the utility model is described in detail by the following specific implementation and drawings.

[0030] Figure 1 It is a whole structure schematic view of the trolley frame state of the embodiment;

[0031] Figure 2 It is a whole structure schematic view of the luggage trolley frame state of the embodiment;

[0032] Figure 3 It is a structure schematic view of the first unlocking assembly of the embodiment;

[0033] Figure 4 It is a split structure schematic view of the first unlocking assembly of the embodiment;

[0034] Figure 5 It is a split structure schematic view of the first unlocking assembly of the embodiment from another perspective;

[0035] Figure 6 It is a structure schematic view of the third rotating disc of the embodiment;

[0036] Figure 7 It is a structure schematic view of the tooth block of the embodiment;

[0037] Figure 8 It is a connection relationship schematic view of the first unlocking key and the disc of the embodiment;

[0038] Figure 9 It is a structure schematic view of the limiting assembly of the embodiment;

[0039] Figure 10 It is a structure schematic view of the pulling block of the embodiment;

[0040] Figure 11 It is a structure schematic view of the second unlocking assembly of the embodiment.

[0041] In the drawings:

[0042] 100-U-shaped push rod; 110-First sleeve; 120-Limiting hole; 200-Front support rod; 210-Second sleeve; 300-Rear support rod; 400-U-shaped bracket; 500-First base rod; 600-First unlocking component; 601-First rotating disk; 602-Second rotating disk; 6021-Ring; 603-Third rotating disk; 6031-Gear block mounting groove; 604-Fourth rotating disk; 6041-Snap-fit ​​ring; 605-Gear disk; 606-First unlocking key; 607-Pull rope; 608-Disc; 6081-Sloping groove; 609-Gear block; 6010-Gear slot; 6011 - Toothed block slot; 6012- Protrusion; 6013- Sloping protrusion; 700- Second unlocking component; 701- Unlocking box; 702- Sliding part; 703- Unlocking piece; 7031- Long sliding hole; 7032- First groove; 704- Second unlocking key; 7041- Second groove; 800- Spring; 900- First connecting rod; 1000- Second connecting rod; 1100- Limiting component; 1101- Limiting seat; 1102- Pull block; 1103- Pin; 1104- Limiting key; 1105- L-shaped sliding hole; 1106- Sloping sliding hole; 1200- Second bottom rod; 1201- Insertion tube; 1300- Pull rod. Detailed Implementation

[0043] The following are specific embodiments of the present invention described in conjunction with the accompanying drawings, further illustrating the technical solution of the present invention. However, the present invention is not limited to these embodiments. Specific details such as particular configurations and components are provided in the following description merely to aid in a comprehensive understanding of the embodiments of the present invention. Therefore, those skilled in the art should understand that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present invention. Furthermore, for clarity and brevity, descriptions of known functions and structures have been omitted.

[0044] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0045] like Figures 1-11 As shown, this embodiment provides a dual-purpose handcart frame, including: a U-shaped push rod 100, a front support rod 200, a rear support rod 300, a U-shaped bracket 400, a first base rod 500, a first unlocking component 600, and a second unlocking component 700;

[0046] The first unlocking assembly 600 comprises a first rotating disc 601, a second rotating disc 602, a third rotating disc 603, a fourth rotating disc 604, a gear disc 605, and a U-shaped push rod 100. The two ends of the U-shaped push rod 100 are connected with the first rotating disc 601, the two ends of a U-shaped support 400 are connected with the second rotating disc 602, a front support rod 200 is connected with the third rotating disc 603, and a rear support rod 300 is connected with the fourth rotating disc 604. The first rotating disc 601, the second rotating disc 602, the third rotating disc 603, and the fourth rotating disc 604 are sequentially buckled and installed from inside to outside. The middle part of the first rotating disc 601 and the third rotating disc 603 is provided with a gear clamping groove 6010 for clamping the gear disc 605. The gear disc 605 can be clamped with the gear clamping groove 6010 of the first rotating disc 601 and the third rotating disc 603 at the same time. At this time, the first rotating disc 601 is in a locked state. The gear disc 605 can be moved out of the gear clamping groove 6010 of the first rotating disc 601 and clamped with the gear clamping groove 6010 of the third rotating disc 603. At this time, the first rotating disc 601 is in an unlocked state, and the U-shaped push rod 100 can be rotated.

[0047] In order to more conveniently operate the gear disc 605 to realize unlocking of the U-shaped push rod 400, the first unlocking assembly 600 further comprises a first unlocking key 606, a pull rope 607, and a disc 608. The first unlocking key 606 is arranged at the middle part of the top end of the U-shaped push rod 100, facilitating user operation. The pull rope 607 is located inside the U-shaped push rod 100, one end of which is connected with the first unlocking key 606, and the other end of which is connected with the disc 608. The disc 608 is rotatably arranged in a containing cavity on the side of the gear disc 605 close to the first rotating disc 601. An inclined groove 6081 is arranged on the end face of the disc 608 facing the first rotating disc 601, and an inclined protrusion 6013 is arranged on the inner side face of the first rotating disc 601. The inclined protrusion 6013 can be located in the inclined groove 6081. When the user presses the first unlocking key 606, the pull rope 607 will pull the disc 608 to rotate, so that the inclined groove 6081 moves along the inclined protrusion 6013, thereby pushing the disc 608 to move away from the first rotating disc 601, and further pushing the gear disc 605 to move, so that the gear disc 605 is separated from the gear clamping groove 6010 of the first rotating disc 601 and completely enters the gear clamping groove 6010 of the third rotating disc 603, and finally the first rotating disc 601 is unlocked. At this time, the U-shaped push rod 100 can be pressed downward until it is rotated to a horizontal position.

[0048] The bottom ends of the two front support rods 200 are connected with a first bottom rod 500.

[0049] The second unlocking assembly 700 is rotatably arranged between the U-shaped support 400 and the first bottom rod 500, and comprises an unlocking box 701, a sliding piece 702 arranged inside the unlocking box 701, an unlocking sheet 703 arranged on both sides of the sliding piece 702, and a second unlocking key 704 arranged on both sides of the unlocking box 701. The unlocking sheet 703 is arranged on both sides of the sliding piece 702, and one end of the unlocking sheet 703 is provided with a long sliding hole 7031 penetrating through the U-shaped support 400, and the other end of the unlocking sheet 703 penetrates through the first bottom rod 500. One end of the sliding piece 702 abuts against the U-shaped support 400, and a spring 800 is arranged between the other end of the sliding piece 702 away from the U-shaped support 400 and the first bottom rod 500. The two second unlocking keys 704 are provided with a spring, the unlocking sheet 703 is provided with a first recess 7032 with the same width as the second unlocking key 704, the second unlocking key 704 can slide in the first recess 7032 and above the sliding piece 702, and the second unlocking key 704 is provided with a second recess 7041. When the user presses the two second unlocking keys 704, the first recess 7032 is moved to correspond to the second recess 7041, the sliding piece 702 and the unlocking box 701 are unlocked, at this time, the unlocking box 701 can be rotated upward, that is, the U-shaped support 400 is pulled upward, the sliding piece 702 slides downward in the unlocking box 701 to press the spring 800, and the U-shaped support 400 is close to the first unlocking assembly 600 until the U-shaped support 400 is in a horizontal position.

[0050] Further, the first unlocking assembly 600 further comprises a tooth block 609, the third rotating disc 603 is symmetrically provided with a tooth block mounting groove 6031, the tooth block 609 is mounted in one of the tooth block mounting grooves 6031, one end of the tooth block 609 with a clamping tooth is provided with a spring (not shown in the figure), the other end of the spring abuts against the groove wall of the tooth block mounting groove 6031, and the outer side of the tooth block mounting groove 6031 is provided with a tooth block clamping groove 6011. At the same time, the fourth rotating disc 604 is provided with a clamping ring 6041, the clamping ring 6041 is also symmetrically provided with the tooth block clamping groove 6011, the clamping tooth on the tooth block 609 can be clamped with the tooth block clamping grooves on the third rotating disc 603 and the clamping ring 6041 at the same time, at this time, the third rotating disc 603 and the fourth rotating disc 604 are in a locked state. The clamping tooth on the tooth block 609 can move out of the tooth block clamping groove 6011 of the third rotating disc 603 and be clamped with only the tooth block clamping groove 6011 on the clamping ring 6041, at this time, the third rotating disc 603 and the fourth rotating disc 604 are in an unlocked state.

[0051] In order to realize the unlocking of the third rotating disc 603 and the fourth rotating disc 604, the second rotating disc 602 is internally provided with a ring 6021, and the end face of the ring 6021 is symmetrically provided with a protrusion 6012; the end of the tooth block 609 away from the tooth is provided with a protrusion 6012, and the protrusion 6012 on the tooth block 609 abuts against the end face of the ring 6021. When the U-shaped support 400 is rotated, the second rotating disc 602 is rotated, so that the protrusion 6012 on the ring 6021 pushes the protrusion 6012 on the tooth block 609, thereby pushing the tooth of the tooth block 609 to disengage from the tooth block clamping groove 6011 of the third rotating disc 603, and only clamped with the gear clamping groove 6011 on the clamping ring 6041 of the fourth rotating disc 604, so as to realize the unlocking of the third rotating disc 603 and the fourth rotating disc 604. At this time, the front supporting rod 200 and the rear supporting rod 300 can be rotated towards each other.

[0052] Therefore, in the present embodiment, by pressing the U-shaped push rod 100 downward to rotate to a horizontal position, the U-shaped support 400 is pulled upward to be in a horizontal position together with the U-shaped push rod 100, and the front supporting rod 200 and the rear supporting rod 300 are rotated towards each other, so as to realize the state switching of the handcart frame to the luggage cart frame.

[0053] In order to make the frame more stable and reliable in the luggage cart frame state, the rear supporting rod 300 is hingedly connected with a first connecting rod 900 and a second connecting rod 1000, the U-shaped push rod 100 is sleeved with a first sleeve 110, and the end of the first connecting rod 900 away from the rear supporting rod 300 is hingedly connected with the first sleeve 110. Similarly, the front supporting rod 200 is sleeved with a second sleeve 210, and the end of the second connecting rod 1000 away from the rear supporting rod 300 is hingedly connected with the second sleeve 210. The two sides of the U-shaped push rod 100 are also provided with limiting holes 120, and the inner side of the limiting hole 120 is provided with a limiting assembly 1100. The limiting assembly 1100 further includes a limiting seat 1101, a pull block 1102, a pin shaft 1103 and a limiting key 1104. The limiting seat 1101 is fixed in the interior of the U-shaped push rod 100, the pull block 1102 is located in the interior of the limiting seat 1101, a spring is also arranged between the pull block 1102 and the limiting seat 1101, the limiting key 1104 is fixed on one side of the pull block 1102, the limiting seat 1101 is provided with an L-shaped sliding hole 1105, and the pull block 1102 is provided with an inclined sliding hole 1106. The pin shaft 1103 penetrates through the L-shaped sliding hole 1105 and the inclined sliding hole 1106, and is connected with the pull rope 607. When the user presses the first unlocking key 606 to pull the pull rope 607, the pull block 1102 is driven to move, thereby driving the limiting key 1104 to enter or move out of the limiting hole 120.

[0054] In order to facilitate the pushing of the luggage cart in the frame state, a second bottom rod 1200 is arranged below the first bottom rod 500, and a plug-in pipe 1201 is arranged on the second bottom rod 1200, and a pull rod 1300 is plugged into the plug-in pipe 1201. When the luggage cart is switched to the frame state, the user can hold the pull rod 1300 to push and pull the luggage cart to move.

[0055] Based on the above-mentioned frame structure, the embodiment further provides a dual-purpose trolley, which adopts the trolley frame mentioned above, and a seat pocket (not shown in the figure) is arranged on the U-shaped push rod 100 and the U-shaped support 400, so as to form a dual-purpose trolley which can be used as a child trolley and a luggage cart.

[0056] It should be noted that the terms used herein are only for the purpose of describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form, unless the context clearly indicates otherwise, and furthermore, it should be understood that when the terms "comprise" and / or "include" are used in the specification, it means that there is a feature, step, work, device, component and / or combination thereof.

[0057] In the description of the present application, it should be understood that the terms "upper", "lower" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0058] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise specifically limited.

Claims

1. A dual-purpose trolley frame, characterized in that, The utility model relates to a kind of U-shaped push rod, front support rod, rear support rod, U-shaped support, first bottom bar, first unlocking assembly and second unlocking assembly;The first unlocking assembly (600) includes first rotating disc (601), second rotating disc (602), third rotating disc (603), fourth rotating disc (604), gear disc (605), the both ends of the U-shaped push rod (100) are connected with first rotating disc (601), the both ends of the U-shaped support (400) are connected with second rotating disc (602), the front support rod (200) is connected with third rotating disc (603), the rear support rod (300) is connected with fourth rotating disc (604), and first rotating disc (601), second rotating disc (602), third rotating disc (603) and fourth rotating disc (604) are sequentially buckled from inside to outside;Gear clamping groove (6010) for clamping gear disc (605) is arranged in the middle of first rotating disc (601) and third rotating disc (603), gear disc (605) can be clamped with the gear clamping groove (6010) of first rotating disc (601) and third rotating disc (603) simultaneously, and gear disc (605) can be removed from the gear clamping groove (6010) of first rotating disc (601) and only be clamped with the gear clamping groove (6010) of third rotating disc (603); The bottom end of two front support rods (200) is connected with first bottom bar (500); Second unlocking assembly (700) is rotatably arranged between U-shaped support (400) and first bottom bar (500), and second unlocking assembly (700) includes unlocking box (701) and sliding element (702) and unlocking sheet (703) in unlocking box (701), unlocking sheet (703) is arranged on the both sides of sliding element (702), one end of unlocking sheet (703) is provided with long sliding hole (7031), U-shaped support (400) penetrates long sliding hole (7031), and the other end of unlocking sheet (703) penetrates first bottom bar (500);One end of sliding element (702) is abutted to U-shaped support (400), and spring (800) is arranged between the other end of sliding element (702) away from U-shaped support (400) and first bottom bar (500). First unlocking assembly (600) further includes first unlocking key (606), pull rope (607) and disc (608), first unlocking key (606) is arranged in the middle of the top of U-shaped push rod (100), pull rope (607) is located in the inside of U-shaped push rod (100), disc (608) is rotatably arranged in accommodating cavity on the side of gear disc (605) close to first rotating disc (601), one end of pull rope (607) is connected with first unlocking key (606), and the other end is connected with disc (608). ​ 2. A dual-purpose trolley frame as claimed in claim 1, wherein, ​ The end face of the disc (608) towards the first rotating disc (601) is provided with a bevel groove (6081), and the inner side of the first rotating disc (601) is provided with a bevel protrusion (6013), and the bevel protrusion (6013) is located in the bevel groove (6081).

3. A dual-purpose trolley frame as claimed in claim 1, wherein, The second unlocking assembly (700) further comprises second unlocking keys (704) symmetrically arranged on both sides of the unlocking box (701), springs (800) arranged between the two second unlocking keys (704), and the unlocking sheet (703) provided with a first groove (7032) consistent with the width of the second unlocking key (704), wherein the second unlocking key (704) can slide in the first groove (7032) and above the sliding piece (702), and the second unlocking key (704) is provided with a second groove (7041).

4. A dual-purpose trolley frame as claimed in claim 1, wherein, The first unlocking assembly (600) further comprises a tooth block (609), the third rotating disc (603) is symmetrically provided with a tooth block mounting groove (6031) inside, the tooth block (609) is mounted in one of the tooth block mounting grooves (6031), one end of the tooth block (609) with a clamping tooth is provided with a spring inside, and the other end of the spring is in abutment with the groove wall of the tooth block mounting groove (6031); and the outer side of the tooth block mounting groove (6031) is provided with a tooth block clamping groove (6011). The fourth rotating disc (604) is provided with a clamping ring (6041) inside, and the clamping ring (6041) is symmetrically provided with a tooth block clamping groove (6011) thereon. The clamping tooth on the tooth block (609) can be clamped with the tooth block clamping grooves (6011) on the third rotating disc (603) and the clamping ring (6041) at the same time, and the clamping tooth on the tooth block (609) can be moved out of the tooth block clamping groove (6011) of the third rotating disc (603) and clamped with only the tooth block clamping groove (6011) on the clamping ring (6041).

5. A dual-purpose trolley frame as claimed in claim 4, wherein, The second rotating disc (602) is internally provided with a circular ring (6021), and the end face of the circular ring (6021) is symmetrically provided with a protrusion (6012). The end of the tooth block (609) away from the clamping tooth is provided with a protrusion (6012), and the protrusion on the tooth block (609) is in abutment with the end face of the circular ring (6021).

6. A dual-purpose trolley frame as claimed in claim 1, wherein, The first connecting rod (900) and the second connecting rod (1000) are hinged to the rear supporting rod (300), the first sleeve (110) is sleeved on the U-shaped push rod (100), the end of the first connecting rod (900) away from the rear supporting rod is hinged to the first sleeve (110), the second sleeve (210) is sleeved on the front supporting rod (200), and the end of the second connecting rod (1000) away from the rear supporting rod is hinged to the second sleeve (210).

7. A dual-purpose trolley frame as claimed in claim 1, wherein, The U-shaped push rod (100) is provided with limiting holes (120) on both sides, and the limiting holes (120) are internally provided with limiting assemblies (1100), wherein the limiting assembly (1100) comprises a limiting key (1104), and the limiting key (1104) can enter or move out of the limiting hole (120).

8. A dual-purpose trolley frame as claimed in claim 7, wherein, The limiting assembly (1100) further comprises a limiting seat (1101), a pull block (1102) and a pin shaft (1103), the limiting seat (1101) is fixed inside the U-shaped push rod (100), the pull block (1102) is located inside the limiting seat (1101), a spring is arranged between the pull block (1102) and the limiting seat (1101), and the limiting key (1104) is fixed on one side of the pull block (1102); The limiting seat (1101) is provided with an L-shaped sliding hole (1105), the pull block (1102) is provided with an inclined sliding hole (1106), the pin shaft (1103) penetrates through the L-shaped sliding hole (1105) and the inclined sliding hole (1106), and the pin shaft (1103) is connected with the pull rope (607).

9. A dual-purpose trolley frame as claimed in claim 1, wherein, A second bottom rod (1200) is arranged below the first bottom rod (500), the second bottom rod (1200) is provided with a plug-in pipe (1201), and the plug-in pipe (1201) is plugged with a pull rod (1300).

10. A dual-purpose trolley characterized in that, The handcart adopts the handcart frame according to any one of claims 1-9, and a seat pocket is mounted on the U-shaped push rod (100) and the U-shaped support (400).

Images