A folding locking structure for a trolley

Abstract

This utility model discloses a folding locking structure for a trolley, including a push rod and a locking structure. The push rod includes a sleeve and a telescopic rod that can extend and retract within the sleeve. The sleeve has grooves on both sides, and a first positioning hole is provided in each groove. The locking structure includes a first locking sleeve, a second locking sleeve, an inner tooth, and an outer tooth. The first locking sleeves are disposed on both sides of the sleeve, and the two first locking sleeves are connected by a pin. The second locking sleeve is fixedly connected to the trolley rod, and the middle parts of the first and second locking sleeves are connected by a pin. The surfaces of the first and second locking sleeves facing each other are provided with tooth grooves. The inner and outer teeth are located in the tooth grooves of the first and second locking sleeves. A push rod is provided on the inner side of the inner tooth, and the push rod can enter and exit the first positioning hole. A spring is installed on the outer side of the outer tooth, and the end of the spring away from the outer tooth abuts against the inside of the second locking sleeve.

Description

Technical Field

[0001] This utility model relates to the technical field of children's strollers, and specifically to a stroller folding locking structure. Background Technology

[0002] As a core tool for parents to take young children out, the ease of folding and the safety of locking strollers directly affect the user experience and the safety of young children.

[0003] The folding locking structures of children's strollers on the market generally have the following technical pain points: (1) Cumbersome operation: Most locking structures require multiple steps such as "unlocking buckle → pulling lever → pressing lock plate" to achieve folding. When parents are holding children or carrying luggage, it is difficult to unlock with one hand, resulting in low operation efficiency; (2) Poor locking stability: Some products rely on a single buckle or spring structure to achieve locking. After long-term use, the locking is prone to loosening due to wear of parts. The push lever may rotate or extend unexpectedly during the push process, posing a risk of children tipping over; (3) Complex structure and difficult maintenance: Traditional locking structures contain multiple sets of linkages, gears or cam assemblies. The number of parts is large and the assembly precision requirements are high. This not only increases production costs, but also makes it easy for the overall locking function to fail due to the failure of a certain part, making maintenance difficult.

[0004] In view of the shortcomings of the existing technology, there is an urgent need for a stroller folding locking structure that is simplified in structure, easy to operate and has a stable lock, so as to meet parents' core needs for safe and reliable strollers with one-button operation. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a folding locking structure for a trolley, which addresses the above-mentioned shortcomings of the prior art.

[0006] To achieve its purpose, this utility model adopts the following technical solution: A folding locking structure for a stroller includes: A push rod, comprising a sleeve and a telescopic rod capable of telescopic movement within the sleeve, wherein the sleeve has grooves on both sides and a first positioning hole is provided in the grooves; The locking structure includes a first locking sleeve, a second locking sleeve, internal teeth, and external teeth. The first locking sleeve is disposed on both sides of the rod sleeve, and the two first locking sleeves are connected by a pin. The second locking sleeve is located outside the first locking sleeve and is fixedly connected to the trolley rod. The middle parts of the first locking sleeve and the second locking sleeve are connected by a pin. The first locking sleeve and the second locking sleeve have toothed grooves on their opposite surfaces. The inner teeth and the outer teeth are located in the toothed grooves of the first locking sleeve and the second locking sleeve. The inner side of the inner teeth is provided with a push rod, which can enter and exit the first positioning hole. The outer side of the outer teeth is equipped with a spring, and the end of the spring away from the outer teeth abuts against the inside of the second locking sleeve.

[0007] Preferably, the telescopic rod is provided with a push handle at the top, and an unlock button is provided in the middle of the push handle. The bottom end of the unlock button is connected to a pull rope inside the telescopic rod, and the bottom end of the pull rope is connected to an unlocking component.

[0008] Preferably, the unlocking component includes a pressure block, a top block, a positioning block, and a spring. The top of the pressure block is connected to the pull rope, the top block is inserted into the bottom of the telescopic rod, and the top block has symmetrical slots inside, with a mounting groove at the bottom of the slot. The pressure block is inserted into the slot, the positioning block is located in the mounting groove, the bottom end of the pressure block is pressed onto the positioning block, and the two ends of the spring respectively abut against the positioning block and the rear wall of the mounting groove. The telescopic rod and rod sleeve are provided with a second positioning hole, and the positioning block can move in and out of the second positioning hole.

[0009] Preferably, the bottom end of the pressure block and both sides of the positioning block are provided with mutually fitting inclined surfaces.

[0010] Preferably, the outside of the rod sleeve is provided with an unlocking wrench.

[0011] The beneficial effects of this utility model are: The locking structure of this utility model includes a first locking sleeve, a second locking sleeve, inner teeth, and outer teeth. The outer teeth are equipped with a spring, and the inner teeth are equipped with a push rod. Under the action of the spring force, the push rod of the inner teeth and the push rod are inserted into the first positioning hole of the sleeve, fixing the relative position of the push rod and the trolley rod, ensuring that the push rod remains stable during the pushing process. When unlocking is required, the unlocking lever on the outside of the sleeve is pulled, and the unlocking button is pressed. The pressure block pushes the positioning block, causing the positioning block to move out of the second positioning hole, thus unlocking the telescopic rod from the sleeve. The telescopic rod is moved downwards, and when the top block moves to the push rod, the push rod is pressed to move out of the first positioning hole, thereby unlocking the trolley rod from the sleeve, allowing the next operation to proceed. Therefore, the unlocking structure of this utility model is simple, easy to operate, can be completed with one hand, has high operating efficiency, and good locking stability. Attached Figure Description

[0012] For ease of explanation, this utility model is described in detail below with reference to the specific embodiments and accompanying drawings.

[0013] Figure 1 This is a schematic diagram of the overall structure of this embodiment; Figure 2 This is a schematic diagram of the disassembled locking structure in this embodiment; Figure 3 This is a schematic diagram of the split structure of the locking structure in this embodiment from another perspective; Figure 4 This is a schematic diagram of the structure from another perspective in this embodiment; Figure 5 This is a schematic diagram of the telescopic rod in this embodiment; Figure 6 This is a schematic diagram of the unlocking component in this embodiment.

[0014] In the picture: 100-Push rod; 110-Rod sleeve; 111-Slide groove; 112-First positioning hole; 120-Telescopic rod; 130-Push handle; 140-Unlock button; 150-Pull rope; 160-Second positioning hole; 170-Unlock wrench; 200-Locking structure; 210-First locking sleeve; 220-Second locking sleeve; 230-Internal tooth; 231-Top rod; 240-External tooth; 250-Pin; 260-Groove; 270-Spring; 300-Cart rod; 400-Unlocking assembly; 410-Pressure block; 420-Top block; 421-Slot; 422-Mounting slot; 430-Positioning block. Detailed Implementation

[0015] 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.

[0016] 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.

[0017] like Figure 1-6 The present embodiment shows a folding locking structure for a trolley, including: a push rod 100 and a locking structure 200. The push rod 100 includes a rod sleeve 110 and a telescopic rod 120 that can telescopically move within the rod sleeve 110. The rod sleeve 110 has sliding grooves 111 on both sides, and a first positioning hole 112 is provided in the sliding groove 111. The locking structure 200 includes a first locking sleeve 210, a second locking sleeve 220, an internal tooth 230, and an external tooth 240. The first locking sleeve 210 is disposed on both sides of the rod sleeve 110, and the two first locking sleeves 210 are connected by a pin 250. The second locking sleeve 220 is located outside the first locking sleeve 210 and is fixedly connected to the trolley rod 300. The middle parts of the first locking sleeve 210 and the second locking sleeve 220 are connected by the pin 250. The first locking sleeve 210 and the second locking sleeve 220 are provided with toothed grooves 260 on their opposite surfaces. The inner teeth 230 and the outer teeth 240 are located in the toothed grooves 260 of the first locking sleeve 210 and the second locking sleeve 220. The inner side of the inner teeth 230 is provided with a push rod 231, which can enter and exit the first positioning hole 112. The outer side of the outer teeth 240 is equipped with a spring 270, and the end of the spring 270 away from the outer teeth 240 abuts against the inside of the second locking sleeve 220.

[0018] The top of the telescopic rod 120 is provided with a push handle 130, and the outside of the rod sleeve 110 is provided with an unlocking wrench 170. The push handle 130 has a mounting hole in the middle, and the unlocking button 140 is embedded in the mounting hole by a reset spring. The bottom end of the unlocking button 140 is connected to the pull rope 150 inside the telescopic rod 120. The pull rope 150 extends along the inside of the telescopic rod 120 to the bottom end and is fixed to the top of the pressure block 410 of the unlocking assembly 400.

[0019] The unlocking component 400 includes a pressure block 410, a top block 420, a positioning block 430, and a spring. The top of the pressure block 410 is connected to the pull rope 150. The top block 420 is inserted into the bottom of the telescopic rod 120. The top block 420 has symmetrical slots 421 inside, and the bottom of the slots 421 has a mounting groove 422. The pressure block 410 is inserted into the slots 421, and the positioning block 430 is located in the mounting groove 422. The bottom of the pressure block 410 is pressed against the positioning block 430. The two ends of the spring abut against the positioning block 430 and the rear wall of the mounting groove 422, respectively. The telescopic rod 120 and the rod sleeve 110 are provided with a second positioning hole 160, and the positioning block 430 can enter and exit the second positioning hole 160. The bottom of the pressure block 410 and both sides of the positioning block 430 are provided with mutually fitting inclined surfaces.

[0020] When unlocking is required, pull the unlocking lever 170 on the outside of the sleeve 110, press the unlocking button 140, the pressure block 410 pushes the positioning block 430, causing the positioning block 430 to move out of the second positioning hole 160, the telescopic rod 120 is unlocked from the sleeve 110, the telescopic rod 120 is moved downwards, and when the top block 420 moves to the top rod 231, the top rod 231 is pressed to move out of the first positioning hole 112, thereby unlocking the trolley rod 300 from the sleeve 110, and the next operation can be performed.

[0021] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0022] In the description of this application, it should be understood that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application 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. Therefore, they should not be construed as limitations on this application.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

Claims

1. A folding locking structure for a trolley, characterized in that, include: A push rod (100) includes a sleeve (110) and a telescopic rod (120) that can telescopically move within the sleeve (110). The sleeve (110) has grooves (111) on both sides and a first positioning hole (112) in the grooves (111). A locking structure (200) includes a first locking sleeve (210), a second locking sleeve (220), an internal tooth (230), and an external tooth (240). The first locking sleeve (210) is disposed on both sides of the rod sleeve (110), and the two first locking sleeves (210) are connected by a pin (250). The second locking sleeve (220) is located outside the first locking sleeve (210) and is fixedly connected to the trolley rod (300). The middle parts of the first locking sleeve (210) and the second locking sleeve (220) are connected by a pin (250). The first locking sleeve (210) and the second locking sleeve (220) have toothed grooves (260) on their opposite surfaces. The inner tooth (230) and the outer tooth (240) are located in the toothed grooves (260) of the first locking sleeve (210) and the second locking sleeve (220). The inner tooth (230) has a push rod (231) on its inner side. The push rod (231) can enter and exit the first positioning hole (112). The outer tooth (240) has a spring (270) installed on its outer side. The end of the spring (270) away from the outer tooth (240) abuts against the inside of the second locking sleeve (220).

2. The folding locking structure for a trolley according to claim 1, characterized in that, The telescopic rod (120) is provided with a push handle (130) at the top, and an unlock button (140) is provided in the middle of the push handle (130). The bottom end of the unlock button (140) is connected to the pull rope (150) inside the telescopic rod (120), and the bottom end of the pull rope (150) is connected to an unlocking component (400).

3. The folding locking structure for a trolley according to claim 2, characterized in that, The unlocking component (400) includes a pressure block (410), a top block (420), a positioning block (430), and a spring. The top of the pressure block (410) is connected to the pull rope (150), and the top block (420) is inserted into the bottom of the telescopic rod (120). The top block (420) has symmetrical slots (421) inside, and the bottom of the slots (421) has an installation groove (422). The pressure block (410) is inserted into the slot (421), the positioning block (430) is located in the mounting groove (422), the bottom end of the pressure block (410) is pressed onto the positioning block (430), and the two ends of the spring abut against the positioning block (430) and the rear wall of the mounting groove (422) respectively. The telescopic rod (120) and the rod sleeve (110) are provided with a second positioning hole (160), and the positioning block (430) can enter and exit the second positioning hole (160).

4. The folding locking structure for a trolley according to claim 3, characterized in that, The bottom of the pressure block (410) and both sides of the positioning block (430) are provided with mutually fitting inclined surfaces.

5. A folding locking structure for a trolley according to claim 4, characterized in that, An unlocking wrench (170) is provided on the outside of the sleeve (110).

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