Locking structure of baby carriage frame

By designing a locking structure on the stroller frame and utilizing the cooperation of the locking tongue and locking tongue spring, the locking and unlocking operations are simplified, solving the problem of the large size and space occupation of traditional stroller frames after folding, and achieving a greater degree of folding and higher usability.

CN223850666UActive Publication Date: 2026-01-30SUZHOU AVNO BABY PRODUCTS CO LTD
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Patent Information

Application Number
CN202520673569.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-10
Publication Date
2026-01-30
Estimated Expiration
2035-04-10

AI Technical Summary

Technical Problem

Traditional stroller frames have a limited folding range, remain large even when folded, take up space, and are inconvenient to lock in place.

Method used

A locking structure for a stroller frame has been designed, including a joint connection between the front wheel support and the rear wheel support. Locking and unlocking are achieved through the cooperation of the locking tongue and the locking tongue compression spring, simplifying operation and increasing the folding range.

Benefits of technology

It improves the practicality of the stroller frame, is simple and quick to operate, and reduces its size when folded, saving space.

✦ Generated by Eureka AI based on patent content.

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    Figure CN223850666U_ABST
Patent Text Reader

Abstract

The utility model discloses a locking structure of a baby carriage frame. The locking structure comprises a push rod body and a front wheel support body arranged at the tail end of the push rod body. A front wheel support upper joint is arranged on the inner side face of the tail end of the push rod body, a spring bolt is arranged on the upper side of a spring bolt sliding groove of the push rod large joint body, the push rod large joint body is connected with a first pin hole formed in the rear wheel support upper joint in a relative rotating mode through a second pin hole, and a spring bolt compression spring drives the spring bolt to move downwards along the spring bolt sliding groove. When the lock tongues move to the first locking groove and the second locking groove at the same time, the frame is locked, the lock tongues on the left side and the right side are pulled upwards, and when the lock tongues are separated from the first limiting groove and the second limiting groove, the locking relation between the front wheel support upper joint and the push rod large joint and between the rear wheel support upper joint and the push rod large joint are relieved. After the baby carriage frame is improved, the operation is simple and quick, the folding range is large, and the use practicability of the baby carriage frame can be effectively improved.
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Description

TECHNICAL FIELD

[0001] The utility model belongs to the related technical field of maternal and child products, and particularly relates to a locking structure of a baby carriage frame. BACKGROUND

[0002] A baby carriage is a tool car designed to provide convenience for baby outdoor activities, and has various models. Generally, children of 1 to 2 years old play baby carriages, and children over 2 years old play toy cars with wheels. Baby carriages can bring certain benefits to the intellectual development of children and increase the brain development of children.

[0003] A baby carriage is the most favorite walking vehicle for babies and is also a necessity for mothers when taking babies to go shopping. However, according to the growth of babies and the use purpose, baby carriages can be divided into many types. The main standard is the load capacity, and the general test standard is 9 to 15 kg. Generally, a baby carriage can be used for about four to five years.

[0004] However, the folding degree of the traditional baby carriage frame is small, and the folded baby carriage frame is usually relatively large and occupies relatively much space, and the folding and locking of the baby carriage frame are relatively troublesome.

[0005] The utility model improves the above problems, and particularly relates to a locking structure of a baby carriage frame. CONTENT OF THE UTILITY MODEL

[0006] The utility model aims to provide a locking structure of a baby carriage frame to solve the problem that the folding degree of the traditional baby carriage frame is small, the folded baby carriage frame is usually relatively large, occupies relatively much space, and the folding and locking of the baby carriage frame are relatively troublesome.

[0007] To achieve the above object, the utility model provides the following technical scheme: a locking structure of a baby carriage frame, comprising a front wheel support body arranged at the end position of a push rod body;

[0008] The end inner side of the push rod body is provided with a front wheel support upper joint, the side of the front wheel support upper joint is provided with a locking groove two, the end outer side of the push rod body is provided with a push rod large joint body, the side of the push rod large joint body is provided with a rear wheel support upper joint, the middle position of the push rod large joint body is provided with a lock tongue sliding groove, the bottom position of the lock tongue sliding groove is provided with a locking groove one, the upper side of the lock tongue sliding groove is provided with a lock tongue, the inside of the lock tongue is provided with a lock tongue compression spring, the lock tongue is limited to the lock tongue compression spring groove through the pin arranged at the upper end position of the lock tongue compression spring, the push rod large joint body is provided with a push rod large joint reinforcing sheet, the push rod large joint body is connected with the pin hole three arranged on the front wheel support upper joint through the pin hole two, and the push rod large joint body is connected with the pin hole one arranged on the rear wheel support upper joint through the pin hole two.

[0009] Preferably, the end position of the front wheel support body is provided with a plug-in installation connecting groove, and the plug-in installation connecting groove is a groove structure formed by the front wheel support body structure.

[0010] Preferably, the bottom position of the push rod body is provided with a plug-in installation connecting block, and the push rod body is connected with the plug-in installation connecting groove on the front wheel support body through plug-in installation.

[0011] Preferably, the end position of the push rod body is provided with an upper connecting U-shaped frame, and the upper connecting U-shaped frame is a U-shaped structure.

[0012] Preferably, the bottom position of the upper connecting U-shaped frame is provided with a plug-in connection inner block, and the plug-in connection inner block is connected with the push rod body in plug-in extension.

[0013] Preferably, the middle position of the rear wheel support is provided with a middle support connecting block, and the middle support connecting block is connected to the middle position of the rear wheel support by welding.

[0014] Preferably, the bottom position of the front wheel support body is provided with a front wheel connecting port, and the front wheel connecting port is made of PVC material.

[0015] Preferably, the front end upper side of the front wheel support body is provided with a rubber foot pad, and the surface of the rubber foot pad is a line structure.

[0016] Compared with the prior art, the locking structure of the baby carriage frame has the following beneficial effects:

[0017] In the locking knot of the baby carriage frame, the front wheel support upper joint is arranged at the inner side position of the end of the push rod body, the locking slot two is arranged at the side position of the front wheel support body upper joint, the push rod large joint body is arranged at the outer side position of the end of the push rod body, the rear wheel support upper joint is arranged at the side position of the push rod large joint body, the lock tongue sliding slot is arranged at the middle position of the push rod large joint body, the locking slot one is arranged at the bottom position of the lock tongue sliding slot, the lock tongue is arranged at the upper side position of the lock tongue sliding slot, the lock tongue spring is arranged inside the lock tongue, the lock tongue is limited to the lock tongue spring slot through the pin arranged at the upper end position of the lock tongue spring, the push rod large joint reinforcing piece is arranged inside the push rod large joint body, the push rod large joint body is relatively rotationally connected with the pin hole three arranged on the front wheel support upper joint through the pin hole two arranged on the push rod large joint body, the push rod large joint body is relatively rotationally connected with the pin hole one arranged on the rear wheel support upper joint through the pin hole two, the lock tongue is driven by the lock tongue spring to move downwards along the lock tongue sliding slot, when the lock tongue moves to the locking slot one and the locking slot two positions at the same time, the frame is locked at this time, the lock tongues on the left and right sides are pulled upwards respectively, when the lock tongues are separated from the limiting slot one and the limiting slot two, the front wheel support upper joint and the rear wheel support upper joint are released from the locking relationship with the push rod large joint, the push rod large joint and the front wheel support upper joint are folded to the rear wheel support, and the folding range is large. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the locking structure schematic diagram of the baby carriage frame of the utility model.

[0019] Figure 2 It is the locking structure schematic diagram of the baby carriage frame of the utility model.

[0020] Figure 3 It is the locking structure folding state structure schematic diagram of the baby carriage frame of the utility model.

[0021] Figure 4 It is the locking structure side surface section structure schematic diagram of the baby carriage frame of the utility model. Figure 1

[0022] Figure 5 It is the locking structure side surface section structure schematic diagram of the baby carriage frame of the utility model. Figure 2

[0023] Figure 6 It is the locking structure side surface section structure schematic diagram of the baby carriage frame of the utility model. Figure 3

[0024] Figure 7 It is the locking structure side surface section structure schematic diagram of the baby carriage frame of the utility model. Figure 1 ​​​​

[0025] Figure 8 The locking structure of the baby carriage frame is shown in the sectional view of the elevation Figure 2 The structural schematic diagram.

[0026] Figure 9 The locking structure of the baby carriage frame is shown in the sectional view of the elevation Figure 3 The structural schematic diagram.

[0027] In the figure: 1, rear wheel support upper joint; 2, pin hole one; 3, locking groove one; 4, push rod large joint body; 5, pin hole two; 6, lock tongue sliding groove; 7, push rod large joint reinforcing piece; 8, lock tongue; 9, lock tongue compression spring groove; 10, push rod body; 11, front wheel support upper joint; 12, pin hole three; 13, locking groove two; 14, front wheel support body; 15, rear wheel support; 16, pin; 17, lock tongue compression spring; 18, upper connecting U-shaped frame; 19, plug-in connecting inner block; 20, plug-in mounting connecting block; 21, plug-in mounting connecting groove; 22, middle support connecting block; 23, rubber foot pad; 24, front wheel connecting port. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the ordinary skilled in the art without creative labor fall within the scope of protection of the utility model.

[0029] The utility model provides a kind of locking structure of baby carriage frame as shown in Figures 1-9 The locking structure of the baby carriage frame is shown in the sectional view of the elevation

[0030] The end inner side of the push rod body 10 is provided with a front wheel support upper joint 11, the side of the front wheel support upper joint 11 is provided with a locking groove two 13, the end outer side of the push rod body 10 is provided with a push rod large joint body 4, the side of the push rod large joint body 4 is provided with a rear wheel support upper joint 1, the middle position of the push rod large joint body 4 is provided with a lock tongue sliding groove 6, the bottom position of the lock tongue sliding groove 6 is provided with a locking groove one 3, the upper side of the lock tongue sliding groove 6 is provided with a lock tongue 8, the inside of the lock tongue 8 is provided with a lock tongue compression spring 17, the lock tongue 8 is limited in the lock tongue compression spring groove 9 through the pin 16 arranged at the upper end position of the lock tongue compression spring 17, the push rod large joint body 4 is provided with a push rod large joint reinforcing piece 7, the push rod large joint body 4 is rotatably connected with the pin hole three 12 arranged on the front wheel support upper joint 11 through the pin hole two 5 arranged thereon, the push rod large joint body 4 is rotatably connected with the pin hole one 2 arranged on the rear wheel support upper joint 1 through the pin hole two 5, the push rod large joint body 4 is rotatably connected with the pin hole one 2 arranged on the rear wheel support upper joint 1 through the pin hole two 5, the lock tongue compression spring 17 drives the lock tongue 8 to move downward along the lock tongue sliding groove 6, when the lock tongue 8 moves to the positions of the locking groove one 3 and the locking groove two 13 at the same time, the frame is locked at this time, the lock tongues 8 on the left and right sides are pulled upward respectively, when the lock tongues 8 are separated from the limiting groove one and the limiting groove two, the front wheel support upper joint 11 and the rear wheel support upper joint 1 are released from the locking relationship with the push rod large joint, the push rod large joint and the front wheel support upper joint 11 are folded to the rear wheel support 15 to realize folding, after the improvement of the utility model, the operation is simple and fast, the folding amplitude is large, and the use practicality of the baby carriage frame can be effectively improved.

[0031] As shown in Figure 1 The end position of the front wheel support body 14 is provided with a plug-in installation connecting groove 21, the plug-in installation connecting groove 21 is a groove structure formed by the structure of the front wheel support body 14, the bottom position of the push rod body 10 is provided with a plug-in installation connecting block 20, the push rod body 10 is connected with the plug-in installation connecting groove 21 on the front wheel support body 14 through plug-in installation connecting block 20, the plug-in clamping installation connection is simple and fast, and the installation and dismounting efficiency of the user can be effectively improved.

[0032] As shown in Figure 1 The end position of the push rod body 10 is provided with an upper connecting U-shaped frame 18, the upper connecting U-shaped frame 18 is a U-shaped structure, the bottom position of the upper connecting U-shaped frame 18 is provided with a plug-in connection inner block 19, the plug-in connection inner block 19 is plug-in telescopic connected with the push rod body 10, the plug-in connection inner block 19 and the push rod body 10 plug-in telescopic connection can adjust the position of the upper connecting U-shaped frame 18, so that the comfortable adjustment operation of the user is adapted.

[0033] As shown in Figure 1As shown, a central support connecting block 22 is provided at the middle position of the rear wheel bracket 15. The central support connecting block 22 is connected to the middle position of the rear wheel bracket 15 by welding. The central support connecting block 22 plays a supporting and connecting role, which can effectively improve the stability of the rear wheel bracket 15 and prevent it from deforming.

[0034] like Figure 1 As shown, a front wheel connection port 24 is provided at the bottom of the front wheel bracket body 14. The front wheel connection port 24 is made of PVC material and is used to install and connect the omnidirectional front wheel.

[0035] like Figure 1 As shown, a rubber foot pad 23 is provided at the upper front end of the front wheel bracket 14. The surface of the rubber foot pad 23 has a textured structure. The rubber foot pad 23 can make the baby's feet more comfortable to place, and its textured structure can make the baby's feet more stable.

[0036] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A locking structure of a baby carriage frame, comprising a push rod body (10) and a front wheel support body (14) arranged at the end position of the push rod body (10); characterized in that The inner side position of the end of the push rod body (10) is provided with a front wheel support upper joint (11), the side position of the front wheel support upper joint (11) is provided with a locking groove two (13), the outer side position of the end of the push rod body (10) is provided with a push rod large joint body (4), the side position of the push rod large joint body (4) is provided with a rear wheel support upper joint (1), the middle position of the push rod large joint body (4) is provided with a lock tongue sliding groove (6), the bottom position of the lock tongue sliding groove (6) is provided with a locking groove one (3), the upper side position of the lock tongue sliding groove (6) is provided with a lock tongue (8), the inside of the lock tongue (8) is provided with a lock tongue compression spring (17), the lock tongue (8) is limited to extend and retract in the lock tongue compression spring groove (9) through the pin (16) arranged at the upper end position of the lock tongue compression spring (17), the push rod large joint body (4) is provided with a push rod large joint reinforcing sheet (7), the push rod large joint body (4) is connected to the front wheel support upper joint (11) through the pin hole two (5) arranged thereon and the pin hole three (12) arranged on the rear wheel support upper joint (1) relative rotation connection, the push rod large joint body (4) is connected to the pin hole one (2) arranged on the rear wheel support upper joint (1) through the pin hole two (5) relative rotation connection.

2. A locking arrangement for a pushchair frame according to claim 1, wherein: The end position of the front wheel support body (14) is provided with a plug-in installation connecting groove (21), the plug-in installation connecting groove (21) is a groove structure formed by the structure of the front wheel support body (14).

3. A locking arrangement for a pushchair frame according to claim 2, wherein: The bottom position of the push rod body (10) is provided with a plug-in installation connecting block (20), the push rod body (10) is connected to the plug-in installation connecting groove (21) on the front wheel support body (14) through the plug-in installation connecting block (20).

4. The locking structure of a baby carriage frame according to claim 1, wherein: The end position of the push rod body (10) is provided with an upper connecting U-shaped frame (18), the upper connecting U-shaped frame (18) is a U-shaped structure.

5. A locking arrangement for a pushchair frame according to claim 4, wherein: The bottom position of the upper connecting U-shaped frame (18) is provided with a plug-in connecting inner block (19), the plug-in connecting inner block (19) is connected to the push rod body (10) in plug-in extension connection.

6. A locking structure for a stroller frame as defined in claim 1, wherein: The middle position of the rear wheel support (15) is provided with a middle support connecting block (22), the middle support connecting block (22) is connected to the middle position of the rear wheel support (15) by welding.

7. The locking structure of a baby carriage frame according to claim 1, wherein: The bottom position of the front wheel support body (14) is provided with a front wheel connecting port (24), the front wheel connecting port (24) is made of PVC material.

8. The locking structure of a baby carriage frame according to claim 1, wherein: The front end upper side position of the front wheel support body (14) is provided with a rubber foot pad (23), the surface of the rubber foot pad (23) is a textured structure.