Baby carriage capable of being folded in linkage mode
By using sliding limit pins and closed-end folding joint components in the baby stroller, the problem of difficult to determine the elastic force of the return spring and easy to get into dust is solved, and stable locking and unlocking are achieved, improving the user experience.
Patent Information
- Application Number
- CN202420976952.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-07
- Publication Date
- 2024-12-10
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
In the existing folding structure of children's carriage, the elastic force of the return spring is difficult to determine, resulting in unstable locking and unlocking, and the folding linkage components are prone to dust and cause lag, reducing the user experience.
A folding joint assembly is adopted, including a joint arm fixed to the front wheel bracket, a locking block and a sliding limit pin, the push rod assembly and the rear wheel bracket assembly are hinged into the joint arm, locking and unlocking is achieved through the sliding limit pin, and Avoid dust from entering through a closed design.
Overcoming the problem of difficult to determine the elasticity of the return spring, improving the stability of locking and unlocking, and avoiding dust from entering through a closed design, improving the user experience.
Smart Images
Figure CN222136832U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of foldable baby carriages, and particularly relates to a baby carriage that can be linked and folded. Background Art
[0002] In the prior art, a baby stroller frame usually includes: a push rod assembly, a front bracket assembly, a rear bracket assembly, and a locking assembly arranged at the connection between the push rod assembly, the front bracket assembly and the rear bracket assembly. A guide sleeve is provided on the rear bracket assembly. The push rod assembly and the front bracket assembly are rotatably connected to the guide sleeve through a connecting rod. When the locking assembly is unlocked, the push rod assembly drives the guide sleeve to slide downward along the rear bracket assembly through the connecting rod and then folds together with the rear bracket assembly. The guide sleeve drives the front bracket assembly to fold toward the rear bracket assembly through the connecting rod, thereby folding the baby stroller.
[0003] Among them, the first is that the locking and unlocking of the locking assembly are achieved through the mutual cooperation of the limit pin, the return spring and the pull rope. Specifically, the pull rope pulls the limit pin out of the limit slot to achieve unlocking, and the return spring resets the limit pin to press against the limit slot to achieve locking. However, the above structure has high requirements on the return spring. The elastic force of the return spring is strong, and it is difficult to achieve unlocking. The elastic force of the return spring is weak, and the locking structure is unstable. Second, the hand push rod assembly and the front bracket assembly are linked by the connecting rod and the guide sleeve. If dust enters the connection between the connecting rod and between the guide sleeve and the rear bracket assembly, folding and jamming will occur, reducing the user experience. Utility Model Content
[0004] The main purpose of the utility model is to provide a baby stroller that can be linked and folded, wherein the folding joint assembly includes: a joint arm fixed to the front wheel bracket, a locking block fixed to the rear push rod assembly and extending toward the joint arm, and a limit pin passing through the joint arm and slidably relative to the locking block, the hand push rod assembly and the rear wheel bracket assembly are respectively extended into the joint arm and hinged to the joint arm pivot, and the locking block is provided with a limit groove on the side facing the joint arm, and the limit pin can slide into and out of the limit groove to achieve the locking and unlocking of the hand push rod assembly; in the locked state, the baby stroller is in the unfolded state; in the unlocked state, the hand push rod assembly can be linked to the rear wheel bracket assembly to fold toward the upper and lower sides of the front wheel bracket to achieve the folding of the baby stroller. The above scheme overcomes the disadvantage that the elastic force of the reset spring is difficult to determine in the locking and unlocking process when the reset spring is reset; at the same time, because the folding joint assembly is a relatively closed component, it overcomes the disadvantages of the traditional folding linkage components that are easy to get dust and the structure is not firm, resulting in the jamming phenomenon, and improves the user experience.
[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:
[0006] A baby stroller that can be folded in a linked manner, comprising: a front wheel bracket, a folding joint assembly fixed to the front wheel bracket, and a push rod assembly and a rear wheel bracket assembly pivotally hinged to the folding joint assembly respectively, the push rod assembly driving the rear wheel bracket assembly to rotate in the folding joint assembly, and the push rod assembly rotating toward the upper part of the front wheel bracket for folding and fitting, and driving the rear wheel bracket assembly to rotate toward the lower part of the front wheel bracket for folding and fitting; wherein the folding joint assembly comprises: a joint arm fixed to the front wheel bracket, a locking block fixed to the push rod assembly and extending toward the joint arm, and a limiting pin passing through the joint arm and slidable relative to the locking block, the push rod assembly and the rear wheel bracket assembly respectively extending into the joint arm and pivotally hinged to the joint arm, the locking block is provided with a limiting groove on a side facing the joint arm, and the limiting pin can slide into and out of the limiting groove to achieve locking and unlocking of the push rod assembly.
[0007] As a preferred solution for a linkage-foldable baby stroller, the push rod assembly comprises: a push rod body and a connecting rod; the two ends of the push rod body respectively extend into the joint arm and are pivotally hinged to the joint arm, the connecting rod is arranged in the joint arm and fixedly connected to the two ends of the push rod body, and the locking block is sleeved on the connecting rod and then fixed to the connecting rod; the joint arm is provided with a giveway groove, and a guide sliding straight groove is provided on a side of the joint arm close to the giveway groove, the locking block partially extends into the giveway groove, the limit pin passes through the guide sliding straight groove and can slide in the guide sliding straight groove, so that the limit pin can slide in and out of the limit groove.
[0008] As a preferred solution for a linkage-foldable baby carriage, the folding joint assembly further comprises: a hand-pull limit ring and a pushing module; the two ends of the hand-pull limit ring are respectively hinged to the two side pivots of the joint arm, and a control arc groove is provided on the end of the hand-pull limit ring corresponding to one side of the limit pin, the width of one end of the control arc groove is greater than the width of the other section thereof, and the end of the limit pin extends into the control arc groove and slides along the control arc groove; the joint arm is also provided with a pushing groove, the pushing groove is communicated with the giving way groove, the pushing module is arranged in the pushing groove, and the limit pin passes through the pushing module; in the locked state, the hand-pull limit ring drives the limit pin to slide to the wider end of the control arc groove, and the pushing module slides inward to drive the limit pin to slide into the limit groove; in the unlocked state, the hand-pull limit ring drives the limit pin to slide to the narrower end of the control arc groove, the control arc groove drives the limit pin to slide out of the limit groove, and the limit pin drives the pushing module to slide outward.
[0009] As a preferred solution for a linkage foldable baby stroller, the folding joint assembly also includes: an isolation plate fixed between the two sides of the pushing module and the pushing groove, the pushing module including: a locking shaft, a fixing member, a return spring, a locking button, and a module body; the locking shaft is arranged in the module body, the return spring is sleeved on one end of the locking shaft and is clamped between the locking shaft and the module body, the fixing member fixes the locking shaft and the return spring in the module body, and the other end of the locking shaft passes through the fixing member and extends outward; the locking button is slidably arranged in the module body along the sliding direction of the module body, the locking button is provided with a first guide sliding inclined surface, the locking shaft is provided with a second guide sliding inclined surface, and the isolation plate is provided with a limiting hole, and the first guide sliding inclined surface and the second guide sliding inclined surface cooperate with each other to enable the locking shaft to extend into and exit the limiting hole, so as to realize the locking and unlocking of the pushing module.
[0010] As a preferred solution for a linkage-foldable baby carriage, a guide arc groove is provided on the locking block along its rotation direction, the joint arm extends toward the guide arc groove to form a guide projection, and the guide projection extends into the guide arc groove to guide the locking block to rotate.
[0011] As a preferred solution for a linkage-foldable baby carriage, the push rod assembly also includes: a first gear, and the rear wheel bracket assembly includes: a rear wheel bracket body, and a second gear; the first gear is sleeved on the part of the push rod body extending into the joint arm, the two ends of the rear wheel bracket body respectively extend into the joint arm and are pivotally hinged to the joint arm, the second gear is sleeved on the position where the rear wheel bracket body extends into the joint arm, and the first gear is meshed with the second gear for transmission.
[0012] As a preferred solution for a baby stroller that can be folded in a linked manner, the folding joint assembly also includes: a shielding cover, which is fixed to both sides of the joint arm and is located between the push rod body and the joint arm, and between the rear wheel bracket body and the joint arm, for shielding the gap between the joint arm and the push rod body and the rear wheel bracket body.
[0013] As a preferred solution of a linkage-foldable baby stroller, the linkage-foldable baby stroller also includes: a seat support assembly, the seat support assembly includes: a seat support body, and a linkage arm, the rear wheel support assembly also includes: a fixing rod fixed to the rear wheel support body; the seat support body is pivotally hinged to both sides of the front wheel support, one end of the linkage arm is pivotally hinged to the seat support body, and the other end of the linkage arm is pivotally hinged to the fixing rod, and the fixing rod drives the seat support body to fold toward the front wheel support through the linkage arm.
[0014] As a preferred solution for a linkage-foldable baby carriage, the articulated arm extends toward the fixing rod to form a limiting protrusion, the bottom surface of the limiting protrusion is in contact with the fixing rod, and the fixing rod can abut against the limiting protrusion to limit the rotation range of the rear wheel bracket body.
[0015] As a preferred solution for the linkage foldable baby carriage, the end of the linkage arm extends toward the upper part of the seat support body to form a limiting convex edge, and the limiting convex edge abuts the top of the seat support body to limit the unfolding and rotating range of the seat support body.
[0016] The beneficial effects of the utility model are:
[0017] The utility model provides a linkage foldable baby carriage, comprising: a front wheel support, a folding joint assembly fixed to the front wheel support, and a push rod assembly and a rear wheel support assembly respectively pivotally hinged to the folding joint assembly, the push rod assembly drives the rear wheel support assembly to rotate in the folding joint assembly, and the push rod assembly rotates toward the upper part of the front wheel support to fit and fold during the folding process; wherein the folding joint assembly comprises: a joint arm fixed to the front wheel support, a locking block fixed to the rear push rod assembly and extending toward the joint arm, and a limit pin passing through the joint arm and slidable relative to the locking block, the push rod assembly and the rear wheel support assembly respectively extend into the joint arm and are pivotally hinged to the joint arm, a limit groove is provided on one side of the locking block facing the joint arm, and the limit pin can slide into and out of the limit groove to realize locking and unlocking of the push rod assembly; in the locked state, the baby carriage is in the unfolded state; in the unlocked state, the push rod assembly can link the rear wheel support assembly to fit and fold toward the upper and lower sides of the front wheel support to realize the folding of the baby carriage. By adopting the above scheme, the disadvantage that the reset spring needs to be reset to achieve locking and unlocking, and the elastic force of the reset spring is difficult to determine; at the same time, because the folding joint assembly is a relatively closed component, the disadvantages of traditional folding linkage components that are easy to get dusty and have a weak structure causing jamming are overcome, thereby improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the drawings required for use in the description of the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work, and all of them belong to the protection scope of the present utility model, among which:
[0019] Figure 1 It is a schematic structural diagram of the linkage-foldable baby carriage provided by the utility model in an unfolded state;
[0020] Figure 2 yes Figure 1 A schematic structural diagram of the linkage-foldable baby carriage in a folded state;
[0021] Figure 3 yes Figure 1 A partially enlarged schematic diagram of a cross-sectional view of a linkage-foldable baby carriage shown;
[0022] Figure 4 yes Figure 1 An exploded schematic diagram of a linkage-foldable baby carriage is shown;
[0023] Figure 5 yes Figure 4 A schematic structural diagram of a push rod assembly of a baby carriage that can be linked and folded is shown;
[0024] Figure 6 yes Figure 4 A schematic structural diagram of a rear wheel support of a baby carriage that can be linked and folded is shown;
[0025] Figure 7 yes Figure 4 An exploded schematic diagram of a folding joint assembly of a baby carriage that can be folded in linkage;
[0026] Figure 8 yes Figure 7 A schematic structural diagram of a hand pull ring of a baby carriage that can be linked and folded is shown;
[0027] Fig. 9 yes Figure 7 An exploded schematic diagram of a push module of a linkage-foldable baby carriage is shown;
[0028] Fig.10 yes Figure 7 A schematic structural diagram of a locking block of a linkage-foldable baby carriage shown;
[0029] Fig.11 yes Figure 7 A schematic structural diagram of the articulated arm of the linkage-foldable baby carriage shown;
[0030] Fig.12 yes Figure 4 The structure diagram of the seat support assembly of the baby carriage that can be folded in a linked manner is shown. DETAILED DESCRIPTION
[0031] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0032] In the description of the present utility model, the term "plurality" refers to two or more than two, unless otherwise clearly defined. The term "and / or" used herein includes any and all combinations of one or more related listed items. The terms "install", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "connection" can also be a direct connection or an indirect connection through a medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.
[0033] It should be noted that when an element is referred to as being "assembled on", "installed on", "fixed on" or "disposed on" another element, it can be directly connected to the other component or there can be a central element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there can be a central element. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.
[0034] In the description of this specification, the terms "one embodiment", "some embodiments", "specific embodiments", etc. refer to the specific features, structures, materials or characteristics described in conjunction with the embodiment or example being included in at least one embodiment or example of the utility model. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.
[0035] In the prior art, a baby stroller frame usually includes: a push rod assembly, a front bracket assembly, a rear bracket assembly, and a locking assembly arranged at the connection between the push rod assembly, the front bracket assembly and the rear bracket assembly. A guide sleeve is provided on the rear bracket assembly. The push rod assembly and the front bracket assembly are rotatably connected to the guide sleeve through a connecting rod. When the locking assembly is unlocked, the push rod assembly drives the guide sleeve to slide downward along the rear bracket assembly through the connecting rod and then folds together with the rear bracket assembly. The guide sleeve drives the front bracket assembly to fold toward the rear bracket assembly through the connecting rod, thereby folding the baby stroller.
[0036] Among them, the first is that the locking and unlocking of the locking assembly are achieved through the mutual cooperation of the limit pin, the return spring and the pull rope. Specifically, the pull rope pulls the limit pin out of the limit slot to achieve unlocking, and the return spring resets the limit pin to press against the limit slot to achieve locking. However, the above structure has high requirements on the return spring. The elastic force of the return spring is strong, and it is difficult to achieve unlocking. The elastic force of the return spring is weak, and the locking structure is unstable. Second, the hand push rod assembly and the front bracket assembly are linked by the connecting rod and the guide sleeve. If dust enters the connection between the connecting rod and between the guide sleeve and the rear bracket assembly, folding and jamming will occur, reducing the user experience.
[0037] In the present utility model, if Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the embodiment of the utility model provides a linkage foldable baby carriage, which comprises: a front wheel bracket 10, a folding joint assembly 20 fixed to the front wheel bracket 10, a hand push rod assembly 30 and a rear wheel bracket assembly 40 respectively pivotally hinged to the folding joint assembly 20, and a seat bracket assembly 50 pivotally hinged to the front wheel bracket 10 and linked to the rear wheel bracket assembly 40, the hand push rod assembly 30 drives the rear wheel bracket assembly 40 to rotate in the folding joint assembly 20, the hand push rod assembly 30 rotates toward the upper part of the front wheel bracket 10 to fit and fold, and the rear wheel bracket assembly 40 drives the seat bracket assembly 50 to fit and fold toward the upper part of the front wheel bracket 10;
[0038] Among them, the folding joint assembly 20 includes: a joint arm 21 fixed to the front wheel bracket 10, a locking block 22 fixed to the hand push rod assembly 30 and extending toward the joint arm 21, and a limit pin 23 passing through the joint arm 21 and slidable relative to the locking block 22. The hand push rod assembly 30 and the rear wheel bracket assembly 40 respectively extend into the joint arm 21 and are pivotally hinged to the joint arm 21. The locking block 22 is provided with a limit groove 221 on the side facing the joint arm 21, and the limit pin 23 can slide in and out of the limit groove 221 to achieve locking and unlocking of the hand push rod assembly 30.
[0039] In the present invention, the above scheme is adopted. In the locked state, the baby carriage is in the unfolded state; in the unlocked state, the push rod assembly 30 can be linked with the rear wheel bracket assembly 40 to fold toward the upper and lower sides of the front wheel bracket 10 to achieve the folding of the baby carriage. The above scheme overcomes the disadvantage that the reset spring needs to be reset to achieve locking and unlocking, and the elastic force of the reset spring is difficult to determine; at the same time, because the folding joint assembly 20 is a relatively closed component, it overcomes the disadvantages of the traditional folding linkage components that are easy to get dust and the loose structure leads to jamming, thereby improving the user experience.
[0040] like Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 , Fig.11 and Fig.12 As shown, specifically, the push rod assembly 30 includes: a push rod body 31, and a connecting rod 32; the two ends of the push rod body 31 are respectively extended into the joint arm 21 and are pivotally hinged to the joint arm 21, the connecting rod 32 is arranged in the joint arm 21 to fix the two ends of the push rod body 31, and the locking block 22 is sleeved on the connecting rod 32 and then fixed to the connecting rod 32;
[0041] The articulated arm 21 is provided with a clearance groove 211, and a guide straight groove 212 is provided on one side of the articulated arm 21 close to the clearance groove 211. The locking block 22 partially extends into the clearance groove 211, and the limit pin 23 passes through the guide straight groove 212 and can slide in the guide straight groove 212, so that the limit pin 23 can slide in and out of the limit groove 221.
[0042] In order to enable the limiting pin 23 to slide into and out of the limiting groove 221, the folding joint assembly 20 further includes: a hand-pull limiting ring 24 and a pushing module 25;
[0043] The two ends of the hand-pull limit ring 24 are respectively hinged to the two side pivots of the articulated arm 21, and a control arc groove 241 is provided at one end of the hand-pull limit ring 24 corresponding to one side of the limit pin 23, and the width of one end of the control arc groove 241 is greater than the width of the other end thereof, and the end of the limit pin 23 extends into the control arc groove 241 and slides along the control arc groove 241;
[0044] The articulated arm 21 is further provided with a pushing groove 213, the pushing groove 213 is communicated with the giving way groove 211, the pushing module 25 is arranged in the pushing groove 213, and the limiting pin 23 passes through the pushing module 25;
[0045] In the locked state, the hand-pull limit ring 24 drives the limit pin 23 to slide to the wider end of the control arc groove 241, so that the end of the limit pin 23 has movement space in the control arc groove 241, and the push module 25 slides inward to drive the limit pin 23 to slide into the limit groove 221;
[0046] In the unlocked state, the hand-pull limit ring 24 drives the limit pin 23 to slide to the narrower end of the control arc groove 241, and the control arc groove 241 drives the limit pin 23 to slide out of the limit groove 221, and the limit pin 23 drives the pushing module 25 to slide outward.
[0047] In order to limit the inward and outward sliding of the pushing module 25, the folding joint assembly 20 further includes: an isolation plate 26 fixed between the two sides of the pushing module 25 and the pushing groove 213, and the pushing module 25 includes: a locking shaft 251, a fixing member 252, a return spring 253, a locking button 254, and a module body 255;
[0048] The locking shaft 251 is disposed in the module body 255, the return spring 253 is sleeved on one end of the locking shaft 251 and then clamped between the locking shaft 251 and the module body 255, the fixing member 252 fixes the locking shaft 251 and the return spring 253 in the module body 255, and the other end of the locking shaft 251 passes through the fixing member 252 and extends outward;
[0049] The locking button 254 can be slidably arranged in the module body 255 along the sliding direction of the module body 255, the locking button 254 is provided with a first guide sliding slope 2541, the locking shaft 251 is provided with a second guide sliding slope 2511, and the isolation plate 26 is provided with a limiting hole 261. The first guide sliding slope 2541 and the second guide sliding slope 2511 cooperate with each other to enable the locking shaft 251 to extend into and exit the limiting hole 261, so as to realize the locking and unlocking of the pushing module 25.
[0050] When locking is required, the hand-pull limit ring 24 is rotated until the limit pin 23 slides to the wider end of the control arc groove 241, and the locking button 254 is pushed inward to retract the locking shaft 251, while driving the module body 255 to slide inward until the locking shaft 251 reaches the position of the limit hole 261, and the locking button 254 is released. The reset spring 253 pushes the locking shaft 251 into the limit hole 261, and the module body 255 drives the limit pin 23 into the limit groove 221 to achieve locking of the hand push rod assembly 30 relative to the folding joint assembly 20.
[0051] When unlocking is required, the locking button 254 is pushed inward to retract the locking shaft 251, thereby unlocking the module body 255. The hand-pull limit ring 24 is rotated until the limit pin 23 slides to the narrower end of the control arc groove 241. The control arc groove 241 drives the limit pin 23 to slide out of the limit groove 221, and the limit pin 23 drives the module body 255 to slide outward, so as to unlock the hand push rod assembly 30 relative to the folding joint assembly 20.
[0052] In order to guide the sliding of the locking block 22, a guide arc groove 222 is provided along the rotation direction of the locking block 22, and the joint arm 21 extends toward the guide arc groove 222 to form a guide boss 214, and the guide boss 214 extends into the guide arc groove 222 to guide the rotation of the locking block 22.
[0053] In order to enable the push rod assembly 30 to drive the rear support assembly to rotate, the push rod assembly 30 also includes: a first gear 33, and the rear wheel support assembly 40 includes: a rear wheel support body 41, and a second gear 42; the first gear 33 is sleeved on the part of the push rod body 31 extending into the joint arm 21, and the two ends of the rear wheel support body 41 respectively extend into the joint arm 21 and are pivotally hinged to the joint arm 21, and the second gear 42 is sleeved on the position where the rear wheel support body 41 extends into the joint arm 21, and the first gear 33 and the second gear 42 are meshed for transmission, so that the push rod body 31 drives the rear wheel support body 41 to rotate toward the lower part of the front wheel support 10 during the rotation of the push rod body 31 toward the upper part of the front wheel support 10.
[0054] In order to shield the gap between the folding joint assembly 20 and the push rod body 31 and the rear wheel support body 41, the folding joint assembly 20 also includes: a shielding cover 27, which is fixed to the positions on both sides of the joint arm 21, between the push rod body 31 and the joint arm 21, and between the rear wheel support body 41 and the joint arm 21, and is used to shield the gap between the joint arm 21 and the push rod body 31 and the rear wheel support body 41.
[0055] In order to fold the seat support assembly 50 relative to the front wheel support 10, the seat support assembly 50 includes: a seat support body 51, and a linkage arm 52, and the rear wheel support assembly 40 also includes: a fixing rod 43 fixed to the rear wheel support body 41;
[0056] The seat support body 51 is pivotally hinged to both sides of the front wheel support 10, one end of the linkage arm 52 is pivotally hinged to the seat support body 51, and the other end of the linkage arm 52 is pivotally hinged to the fixing rod 43, and the fixing rod 43 drives the seat support body 51 to fold toward the front wheel support 10 through the linkage arm 52.
[0057] In order to limit the rotation range of the rear wheel support assembly 40, the articulated arm 21 extends toward the fixing rod 43 to form a limiting protrusion 215, the bottom surface of the limiting protrusion 215 is in contact with the fixing rod 43, and the fixing rod 43 can abut against the limiting protrusion 215 to limit the rotation range of the rear wheel support body 41.
[0058] In order to limit the unfolding range of the seat support assembly 50 , the end of the linkage arm 52 extends toward the upper part of the seat support body 51 to form a limiting flange 521 , and the limiting flange 521 abuts against the top of the seat support body 51 to limit the unfolding and rotating range of the seat support body 51 .
[0059] The utility model is described in detail above with reference to the accompanying drawings, but the utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the invention, and still fall within the scope of protection of the utility model.
Claims
1. A baby carriage that can be folded in linkage, characterized in that: include: A front wheel support, a folding joint assembly fixed to the front wheel support, and a push rod assembly and a rear wheel support assembly respectively pivotally hinged to the folding joint assembly, wherein the push rod assembly drives the rear wheel support assembly to rotate within the folding joint assembly, and the push rod assembly drives the rear wheel support assembly to rotate toward the lower part of the front wheel support during the process of rotating toward the upper part of the front wheel support for folding; Among them, the folding joint assembly includes: a joint arm fixed to the front wheel bracket, a locking block fixed to the hand push rod assembly and extending toward the joint arm, and a limit pin passing through the joint arm and slidable relative to the locking block. The hand push rod assembly and the rear wheel bracket assembly are respectively extended into the joint arm and pivotally hinged to the joint arm. The locking block is provided with a limit groove on one side facing the joint arm, and the limit pin can slide in and out of the limit groove to achieve locking and unlocking of the hand push rod assembly.
2. The linkage-foldable baby carriage according to claim 1, characterized in that: The push rod assembly comprises: a push rod body and a connecting rod; The two ends of the hand push rod body are respectively extended into the joint arm and are hinged to the joint arm pivot, the connecting rod is arranged in the joint arm and fixedly connected to the two ends of the hand push rod body, and the locking block is sleeved on the connecting rod and then fixed to the connecting rod; The articulated arm is provided with a clearance groove, and a guide straight groove is provided on one side of the articulated arm close to the clearance groove. The locking block partially extends into the clearance groove, and the limit pin passes through the guide straight groove and can slide in the guide straight groove, so that the limit pin can slide in and out of the limit groove.
3. The linkage-foldable baby carriage according to claim 2, characterized in that: The folding joint assembly also includes: a hand-pull limit ring and a pushing module; The two ends of the hand-pull limit ring are respectively hinged to the two side pivots of the articulated arm, and a control arc groove is provided on one side of the end of the hand-pull limit ring corresponding to the limit pin, and the width of one end of the control arc groove is greater than the width of the other end thereof, and the end of the limit pin extends into the control arc groove and slides along the control arc groove; The articulated arm is further provided with a pushing groove, the pushing groove is communicated with the giving way groove, the pushing module is arranged in the pushing groove, and the limiting pin passes through the pushing module; In the locked state, the hand-pull limit ring drives the limit pin to slide to the wider end of the control arc groove, and the push module slides inward to drive the limit pin to slide into the limit groove; In the unlocked state, the hand-pull limit ring drives the limit pin to slide to the narrower end of the control arc groove, the control arc groove drives the limit pin to slide out of the limit groove, and the limit pin drives the push module to slide outward.
4. The linkage-foldable baby carriage according to claim 3, characterized in that: The folding joint assembly further comprises: an isolation plate fixed between two sides of the pushing module and the pushing groove, and the pushing module comprises: a locking shaft, a fixing member, a return spring, a locking button, and a module body; The locking shaft is arranged in the module body, the return spring is sleeved on one end of the locking shaft and then clamped between the locking shaft and the module body, the fixing member fixes the locking shaft and the return spring in the module body, and the other end of the locking shaft passes through the fixing member and extends outward; The locking button can be slidably arranged in the module body along the sliding direction of the module body, the locking button is provided with a first guide sliding inclined surface, the locking shaft is provided with a second guide sliding inclined surface, and the isolation plate is provided with a limiting hole. The first guide sliding inclined surface and the second guide sliding inclined surface cooperate with each other to enable the locking shaft to extend into and exit the limiting hole, so as to realize the locking and unlocking of the pushing module.
5. The linkage-foldable baby carriage according to claim 1, characterized in that: The locking block is provided with a guide arc groove along its rotation direction, the articulated arm extends toward the guide arc groove to form a guide arc protrusion, and the guide arc protrusion extends into the guide arc groove to guide the locking block to rotate.
6. The linkage-foldable baby carriage according to claim 2, characterized in that: The push rod assembly further comprises: a first gear, and the rear wheel support assembly comprises: a rear wheel support body, and a second gear; The first gear is sleeved on the part of the push rod body extending into the joint arm, the two ends of the rear wheel bracket body respectively extend into the joint arm and are pivotally hinged to the joint arm, the second gear is sleeved on the position where the rear wheel bracket body extends into the joint arm, and the first gear is meshed with the second gear for transmission.
7. The linkage-foldable baby carriage according to claim 6, characterized in that: The folding joint assembly also includes: a shielding cover, which is fixed to both sides of the joint arm and is located between the push rod body and the joint arm, and between the rear wheel bracket body and the joint arm, and is used to shield the gap between the joint arm and the push rod body and the rear wheel bracket body.
8. The linkage-foldable baby carriage according to claim 6, characterized in that: The linkage-foldable baby carriage further comprises: a seat support assembly, the seat support assembly comprises: a seat support body, and a linkage arm, and the rear wheel support assembly further comprises: a fixing rod fixed to the rear wheel support body; The seat support body is pivotally hinged to both sides of the front wheel support, one end of the linkage arm is pivotally hinged to the seat support body, the other end of the linkage arm is pivotally hinged to the fixing rod, and the fixing rod drives the seat support body to fold toward the front wheel support through the linkage arm.
9. The linkage-foldable baby carriage according to claim 8, characterized in that: The articulated arm extends toward the fixing rod to form a limiting protrusion, the bottom surface of the limiting protrusion is in contact with the fixing rod, and the fixing rod can abut against the limiting protrusion to limit the rotation range of the rear wheel support body.
10. The linkage-foldable baby carriage according to claim 8, characterized in that: The end of the linkage arm extends toward the upper part of the seat support body to form a limiting convex edge, and the limiting convex edge abuts against the top of the seat support body to limit the unfolding and rotating range of the seat support body.