CN215793991U - Folding joint and child stroller - Google Patents
Folding joint and child stroller Download PDFInfo
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- CN215793991U CN215793991U CN202121816212.9U CN202121816212U CN215793991U CN 215793991 U CN215793991 U CN 215793991U CN 202121816212 U CN202121816212 U CN 202121816212U CN 215793991 U CN215793991 U CN 215793991U
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- locking
- mounting plate
- rotating arm
- joint
- folding joint
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Abstract
The utility model discloses a folding joint and a stroller, wherein the folding joint comprises a first joint structure, a second joint structure and a locking assembly, the first joint structure comprises an installation plate, and the installation plate is fixedly installed on a fixed rod of a frame; the second joint structure comprises a rotating arm, one end of the rotating arm can be rotatably installed on the installation plate along the thickness direction of the installation plate, and the other end of the rotating arm is used for fixedly connecting a movable rod of the frame; the locking assembly comprises a locking portion and a matching portion which are matched with each other, one of the locking portion and the matching portion is arranged on the rotating arm, the other one of the locking portion and the matching portion is arranged on the mounting plate, and the locking portion is buckled with the matching portion to enable the rotating arm to be fixed with the mounting plate.
Description
Technical Field
The utility model relates to the technical field of carts, in particular to a folding joint and a stroller for children.
Background
One type of locking mechanism in a folding joint includes a cylindrical slot and a cylindrical latch, and locking and unlocking of the locking mechanism is achieved by inserting or withdrawing the latch into or from the slot. For making the spring bolt can insert in the slot, need leave the clearance between slot and the spring bolt, however this clearance easily leads to folding joint department to rock, and then leads to the handle pole to rock.
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims to provide a folding joint and a stroller, and aims to solve the problems that the existing folding joint is poor in stability and easy to shake.
To achieve the above object, the present invention provides a folding joint, comprising:
the first joint structure comprises a mounting plate, and the mounting plate is fixedly mounted on a fixed rod of the frame;
the second joint structure comprises a rotating arm, one end of the rotating arm can be rotatably installed on the installation plate along the thickness direction of the installation plate, and the other end of the rotating arm is used for fixedly connecting a movable rod of the frame; and the number of the first and second groups,
the locking assembly comprises a locking part and a matching part which are matched with each other, wherein one of the locking part and the matching part is arranged on the rotating arm, the other one of the locking part and the matching part is arranged on the mounting plate, and the locking part is buckled with the matching part so that the rotating arm is fixed with the mounting plate.
Optionally, a through hole extending along the thickness direction of the mounting plate penetrates through the mounting plate;
the rotating arm is provided with a through hole corresponding to the through hole;
the folding joint further comprises a connecting shaft, and the connecting shaft sequentially penetrates through the through hole and the through hole.
Optionally, the fitting portion includes a locking groove, and the locking groove is disposed on a side of the mounting plate facing the second joint structure;
the locking part comprises a locking rod, the locking rod is movably mounted on the rotating arm along the length direction of the rotating arm, and the locking rod is movably inserted into the locking groove.
Optionally, the locking rod is provided with an elongated hole extending along the length direction of the rotating arm;
the locking assembly further comprises:
the convex column penetrates through the long hole, and two ends of the convex column respectively extend out of the long hole to be fixed with the rotating arm; and the number of the first and second groups,
and the spring is positioned in the long hole, and two ends of the spring are respectively abutted against the convex column and the side wall surface corresponding to the long hole.
Optionally, the rotating arm is formed with a first plate section and a second plate section which are arranged at intervals along the thickness direction of the mounting plate, and a mounting gap is formed between the first plate section and the second plate section;
the mounting plate at least partially extends into the mounting gap;
the locking bar is located within the seating gap.
Optionally, a stop matching surface extending along the width direction of the mounting plate is formed on the mounting plate, and the stop matching surface and the locking groove are circumferentially arranged at intervals;
the stop surface is correspondingly formed on one side, facing the lock groove, of the rotating arm and used for abutting against the stop matching surface when the locking rod and the lock groove are in splicing matching.
Optionally, a side surface of the lock groove forms an inclined guiding inclined surface;
the end part of the locking rod is obliquely arranged corresponding to the guide inclined plane.
Optionally, two second joint structures are provided, and two rotating arms in the two second joint structures are arranged at intervals along the thickness direction of the mounting plate;
two locking assemblies are correspondingly arranged.
Optionally, the first joint structure comprises a mounting sleeve sleeved on the outer surface of the mounting plate;
the folding joint further comprises a limiting buckle, the limiting buckle comprises a buckle seat, two clamping grooves which are arranged at intervals along the thickness direction of the mounting plate are formed in the buckle seat, and one clamping groove is used for fixedly mounting the mounting sleeve;
the rotating arm can be movably clamped in the other clamping groove.
The utility model also provides a stroller, comprising the folding joint, wherein the folding joint comprises:
the first joint structure comprises a mounting plate, and the mounting plate is fixedly mounted on a fixed rod of the frame;
the second joint structure comprises a rotating arm, one end of the rotating arm can be rotatably installed on the installation plate along the thickness direction of the installation plate, and the other end of the rotating arm is used for fixedly connecting a movable rod of the frame; and the number of the first and second groups,
the locking assembly comprises a locking part and a matching part which are matched with each other, wherein one of the locking part and the matching part is arranged on the rotating arm, the other one of the locking part and the matching part is arranged on the mounting plate, and the locking part is buckled with the matching part so that the rotating arm is fixed with the mounting plate.
In the technical scheme of the utility model, the mounting plate is mounted on a fixed rod which is fixedly kept on the frame, when the frame is folded, the locking part and the matching part are far away from each other, the rotating arm can rotate around the axis of the thickness direction of the mounting plate and rotates to a specified position according to the folding requirement so as to be convenient for folding and accommodating the frame, when the frame is used, the rotating arm is reversely rotated until the locking part is buckled with the matching part, at the moment, under the limitation of the locking assembly, the rotating arm is fixed with the mounting plate, and the frame is stably kept in an unfolded state, so that the first joint structure and the second joint structure are prevented from being easily crushed due to the clearance.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a perspective view of an embodiment of a folding joint provided by the present invention;
FIG. 2 is a schematic cross-sectional view taken along A-A of FIG. 1;
FIG. 3 is a schematic view of the mounting plate of FIG. 1;
FIG. 4 is a schematic view of the transfer arm of FIG. 1;
fig. 5 is a perspective view of a limit buckle in the folding joint of fig. 1.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 100 | |
21a | Via |
| 11 | |
31 | Lock slot |
| 111 | |
311 | |
| 11a | Through |
32 | |
| 2 | Second |
321 | Elongated |
| 21 | Rotating arm | 33 | Convex |
| 211 | |
34 | |
| 212 | |
4 | Limiting |
| 213 | |
41 | Clamping groove |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, if directional indication is involved in the embodiment of the present invention, the directional indication is only used for explaining the relative positional relationship, the motion situation, and the like between the components in a certain posture, and if the certain posture is changed, the directional indication is changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
To achieve the folding of the frame of the stroller, the frame of the existing stroller is usually a four-bar linkage. The four-bar mechanism comprises a handle rod, a front foot rod, a rear foot rod and a cross rod, wherein the top end of the front foot rod is connected with the bottom end of the handle rod through a folding joint, the top end of the rear foot rod is hinged to the middle of the handle rod, and the two ends of the cross rod are respectively hinged to the middle of the front foot rod and the middle of the rear foot rod.
The folding joint comprises a rod-shaped upper joint and a rod-shaped lower joint, the side edges of the upper joint and the side edges of the lower joint are hinged together, and a locking mechanism is arranged between the upper joint and the lower joint. When the locking mechanism is in a locking state, the upper joint and the lower joint are in an unfolding state and are connected between the handle rod and the front foot rod in a straight line shape, and the frame is in the unfolding state and cannot be folded. When the locking mechanism is in the unlocking state, the upper joint and the lower joint are in the folding state, and the lower joint is folded at one side of the upper joint, at the moment, the frame can be folded.
One type of locking mechanism in a folding joint includes a cylindrical slot and a cylindrical latch, and locking and unlocking of the locking mechanism is achieved by inserting or withdrawing the latch into or from the slot. For making the spring bolt can insert in the slot, need leave the clearance between slot and the spring bolt, however this clearance easily leads to folding joint department to rock, and then leads to the handle pole to rock.
To solve the problem of the shaking of the handle bar, CN209700767U discloses a folding joint, wherein the locking mechanism comprises a sliding pin disposed in the upper joint, a pin hole disposed on the end of the lower joint, and a return spring connected to the sliding pin for pushing the sliding pin to extend into the pin hole. The inner side wall of the pin hole and the outer side wall of the end part, which can extend into the pin hole, of the sliding pin are inclined planes, and the sliding pin can extrude the inner wall of the pin hole through the cooperation of the inclined planes, so that the gap of the locking mechanism in the folding joint can be eliminated. However, due to the limitation of the inclined surface, the depth of the pin hole on the end part of the lower joint in the folding joint is small, when the folding joint is subjected to a rotating and folding movement test, the locking mechanism is in a locking state, namely after the sliding pin extends into the pin hole, the upper joint and the lower joint are easy to rotate and are pressed and broken.
In view of the above, the present invention provides a folding joint, and fig. 1 to 5 are embodiments of the folding joint provided by the present invention.
Referring to fig. 1 to 2, the folding joint 100 includes a first joint structure, a second joint structure 2 and a locking assembly, the first joint structure includes a mounting plate 11, and the mounting plate 11 is used for being fixedly mounted on a fixing rod of a frame; the second joint structure 2 comprises a rotating arm 21, one end of the rotating arm 21 can be rotatably mounted on the mounting plate 11 along the thickness direction of the mounting plate 11, and the other end of the rotating arm 21 is used for fixedly connecting a movable rod of a frame; locking Assembly is including the locking portion and the cooperation portion of mutually supporting, the locking portion with one of them locates of cooperation portion the rotor arm 21, another is located mounting panel 11, the locking portion with cooperation portion lock is so that rotor arm 21 with mounting panel 11 is fixed mutually.
In the technical scheme of the utility model, the mounting plate 11 is mounted on a fixed rod which is fixedly kept on a vehicle frame, when the vehicle frame is folded, the locking part and the matching part are far away from each other, the rotating arm 21 can rotate around the axis of the thickness direction of the mounting plate 11 and rotate to a specified position according to the folding requirement so as to be convenient for folding and accommodating the vehicle frame, when the vehicle frame is used, the rotating arm 21 is reversely rotated until the locking part is buckled with the matching part, at the moment, under the limitation of the locking component, the rotating arm 21 is fixed with the mounting plate 11, and the vehicle frame is stably kept in an unfolded state, so that the first joint structure and the second joint structure 2 are prevented from being easily rotated and broken due to pressure due to the clearance between the first joint structure and the second joint structure.
In this embodiment, the rotation between the mounting plate 11 and the rotating arm 21 is realized by shaft hole matching, and specifically, a through hole 11a extending along the thickness direction of the mounting plate 11 penetrates through the mounting plate 11; the rotating arm 21 is provided with a through hole 21a corresponding to the through hole 11 a; the folding joint 100 further comprises a connecting shaft, and the connecting shaft sequentially penetrates through the through hole 11a and the through hole 21 a. The connecting shaft is a bolt and is locked by a nut after penetrating through the through hole 11a and the through hole 21a, and at the moment, the through hole 11a and the through hole 21a are both positioned on a smooth section of the bolt, so that the smooth rotation is ensured.
The utility model is not limited to the specific form of the locking portion and the matching portion, and in an embodiment, referring to fig. 2 to 3, the matching portion includes a locking groove 31, and the locking groove 31 is disposed on a side of the mounting plate 11 facing the second joint structure 2; the locking part comprises a locking rod 32, the locking rod 32 is movably mounted on the rotating arm 21 along the length direction of the rotating arm 21, and the locking rod 32 can be movably inserted into the locking groove 31. The locking pole 32 can carry out the pulling drive through external haulage rope, under the conventional state, the locking pole 32 insert extremely in the locked groove 31, when folding when accomodating, the pulling the locking pole 32, the locking pole 32 is to keeping away from the direction motion of locked groove 31 is separated until the two, can keep this moment the pulling state of locking pole 32 goes on the rotation of switching arm, because the locking pole 32 with the cooperation relation of switching arm, locking pole 32 can be along with switching arm synchronous motion can guarantee the locking pole 32 can not with locked groove 31 contacts again, can carry out arbitrary rotation, even operating personnel error has loosened the haulage rope, can not take place the locking phenomenon yet.
Based on the above embodiment, the locking rod 32 is provided with the elongated hole 321 extending along the length direction of the rotating arm 21; the locking assembly further comprises a convex column 33 and a spring 34, the convex column 33 is arranged in the elongated hole 321 in a penetrating manner, and two ends of the convex column 33 respectively extend out of the elongated hole 321 to be fixed with the rotating arm 21; the spring 34 is located in the elongated hole 321, and two ends of the spring 34 respectively abut against the convex pillar 33 and the corresponding side wall surfaces of the elongated hole 321. When the locking rod 32 is pulled, the locking rod 32 drives the spring 34 to move towards the direction away from the locking groove 31, at the moment, the convex column 33 is kept fixed, so the spring 34 is gradually compressed along with the movement of the locking rod 32, after the traction rope is loosened, the locking rod 32 can recover to the initial position under the action of the spring force, when the locking rod 32 and the locking groove 31 are in a locking state, the arrangement of the structure enables the locking rod 32 to be always subjected to pretightening force, the gap between the parts where the locking rod 32 and the locking groove 31 are attached is kept to be the minimum, and the stability is improved.
Further, referring to fig. 4, the rotating arm 21 is formed with a first plate section 211 and a second plate section 212 which are arranged at intervals along the thickness direction of the mounting plate 11, and an installation gap is formed between the first plate section 211 and the second plate section 212; the mounting plate 11 at least partially extends into the installation gap; the lock lever 32 is located within the seating gap. So set up can be right simultaneously the locking pole 32 leads the location, simultaneously spare part in the settling gap is protected, can improve stability, first plate section 211 and the second plate section 212 of rotor arm 21 are through a metalwork bending type, so can improve the intensity of rotor arm 21 prevents to use the back fracture for a long time.
Furthermore, the mounting plate 11 is formed with a stop mating surface 111 extending along the width direction of the mounting plate 11, and the stop mating surface 111 and the locking groove 31 are circumferentially spaced; a stop surface 213 is correspondingly formed on one side of the rotating arm 21 facing the lock slot 31, and the stop surface 213 is used for abutting against the stop mating surface 111 when the locking rod 32 is in plug-in mating with the lock slot 31. The stop surface 213 and the stop mating surface 111 play a role in assisting in limiting, further limiting the limit rotation position of the rotating arm 21 and the mounting plate 11 when being fixed, even if a gap appears in the fit between the locking rod 32 and the locking groove 31 due to the weakening of the force value of the spring 34 or the stretching of the traction rope after a long time, the stop mating surface 111 and the stop surface 213 still can play a good limit stop effect due to rigid fit.
It should be noted that, when the rotating arm 21 has the first plate section 211 and the second plate section 212, the stop surface 213 is formed at a bending section connecting the two, and a distance between the stop surface 213 and an end surface of the rotating arm 21 facing away from the mounting plate 11 is smaller than a length of the first plate section 211 and the second plate section 212.
In other embodiments, the locking portion and the engaging portion may be designed to engage with a ratchet wheel, which will not be described in detail herein.
In order to increase the contact area between the locking rod 32 and the locking groove 31, referring to fig. 3, a guide inclined surface 311 is formed on one side surface of the locking groove 31; the end of the locking lever 32 is inclined with respect to the guide slope 311. The guiding inclined surface 311 is arranged to guide the stroke of the locking rod 32 extending into the locking groove 31, so that the locking rod 32 can be smoothly inserted into the locking groove 31 when there is a small gap or no gap between the locking groove 31 and the locking rod 32. In addition, a gap is not required between the locking rod 32 and the locking groove 31, and the locking rod 32 and the locking groove 31 are effectively prevented from shaking due to the gap, so that the mounting plate 11 and the rotating arm 21 can be prevented from shaking.
The application scenario of the folding joint 100 in the present invention is not limited to the cooperation between a single frame fixing rod and a single frame moving rod, specifically, two second joint structures 2 are provided, and two rotating arms 21 in the two second joint structures 2 are arranged at intervals along the thickness direction of the mounting plate 11; two locking assemblies are correspondingly arranged. This can be applied to more transition fittings.
In order to improve the storage stability of the frame, referring to fig. 5, the first joint structure includes a mounting sleeve sleeved on the outer surface of the mounting plate 11; the folding joint 100 further comprises a limiting buckle 4, the limiting buckle 4 comprises a buckle seat, two clamping grooves 41 are formed in the buckle seat and are arranged at intervals along the thickness direction of the mounting plate 11, and one clamping groove 41 is used for fixedly mounting the mounting sleeve; the rotating arm 21 can be movably clamped into the other clamping groove 41. The mounting sleeve and the corresponding clamping groove 41 are fixed through bolts so as to prevent the limiting buckle 4 from moving.
Furthermore, the second joint structure 2 further includes a protection housing, which may be formed by two symmetrical half-housings that are connected to each other by screws, rivets, or other fasteners, and the protruding columns 33 may be screws or rivets for fixing the two half-housings.
In order to reduce the weight, a lightening groove can be arranged on the outer surface of the protective shell and the mounting sleeve, and a plurality of lightening holes can be arranged on the mounting plate 11.
The utility model further provides a stroller, which comprises the folding joint 100, and the stroller comprises all technical characteristics of the folding joint 100, so that the stroller also has technical effects brought by all the technical characteristics, and details are not repeated herein.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the technical solutions of the present invention, which are made by using the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A folding joint, comprising:
the first joint structure comprises a mounting plate, and the mounting plate is fixedly mounted on a fixed rod of the frame;
the second joint structure comprises a rotating arm, one end of the rotating arm can be rotatably installed on the installation plate along the axis of the thickness direction of the installation plate, and the other end of the rotating arm is fixedly connected with a movable rod of the frame; and the number of the first and second groups,
the locking assembly comprises a locking part and a matching part which are matched with each other, wherein one of the locking part and the matching part is arranged on the rotating arm, the other one of the locking part and the matching part is arranged on the mounting plate, and the locking part is buckled with the matching part so that the rotating arm is fixed with the mounting plate.
2. The folding joint of claim 1, wherein said mounting plate has a through-hole extending through it in the thickness direction of said mounting plate;
the rotating arm is provided with a through hole corresponding to the through hole;
the folding joint further comprises a connecting shaft, and the connecting shaft sequentially penetrates through the through hole and the through hole.
3. The folding joint of claim 1, wherein said engagement portion includes a locking slot provided on a side of said mounting plate facing said second joint structure;
the locking part comprises a locking rod, the locking rod is movably mounted on the rotating arm along the length direction of the rotating arm, and the locking rod is movably inserted into the locking groove.
4. The folding joint of claim 3, wherein said locking lever has an elongated hole extending along the length of said rotatable arm;
the locking assembly further comprises:
the convex column penetrates through the long hole, and two ends of the convex column respectively extend out of the long hole to be fixed with the rotating arm; and the number of the first and second groups,
and the spring is positioned in the long hole, and two ends of the spring are respectively abutted against the convex column and the side wall surface corresponding to the long hole.
5. The folding joint of claim 3, wherein said pivot arm is formed with first and second plate segments spaced apart in the thickness direction of said mounting plate, said first and second plate segments forming a seating gap therebetween;
the mounting plate at least partially extends into the mounting gap;
the locking bar is located within the seating gap.
6. The folding joint of claim 3, wherein said mounting plate has a stopper fitting surface formed thereon and extending in the width direction of said mounting plate, said stopper fitting surface being circumferentially spaced from said lock groove;
the stop surface is correspondingly formed on one side, facing the lock groove, of the rotating arm and used for abutting against the stop matching surface when the locking rod and the lock groove are in splicing matching.
7. The folding joint of claim 3, wherein a side surface of said lock groove is formed with a guide slope provided obliquely;
the end part of the locking rod is obliquely arranged corresponding to the guide inclined plane.
8. The folding joint of claim 1, wherein there are two of said second joint structures, and two of said rotating arms of said two second joint structures are spaced apart in a thickness direction of said mounting plate;
two locking assemblies are correspondingly arranged.
9. The folding joint of claim 1, wherein said first joint structure includes a mounting sleeve disposed about an outer surface of said mounting plate;
the folding joint further comprises a limiting buckle, the limiting buckle comprises a buckle seat, two clamping grooves which are arranged at intervals along the thickness direction of the mounting plate are formed in the buckle seat, and one clamping groove is used for fixedly mounting the mounting sleeve;
the rotating arm can be movably clamped in the other clamping groove.
10. A stroller, characterized in that it comprises a folding joint according to any of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121816212.9U CN215793991U (en) | 2021-08-04 | 2021-08-04 | Folding joint and child stroller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121816212.9U CN215793991U (en) | 2021-08-04 | 2021-08-04 | Folding joint and child stroller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215793991U true CN215793991U (en) | 2022-02-11 |
Family
ID=80128586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121816212.9U Active CN215793991U (en) | 2021-08-04 | 2021-08-04 | Folding joint and child stroller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215793991U (en) |
-
2021
- 2021-08-04 CN CN202121816212.9U patent/CN215793991U/en active Active
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