CN104527759B - Folding joint and stroller with folding joint - Google Patents

Abstract

A folding joint with an unfolded position and a folded position, comprising three components of a base rod, a first rotating rod, and a second rotating rod that are rotatably connected, and the folding joint also includes a locking mechanism for locking the folding joint in the unfolded position mechanism, the folding joint also includes a limit mechanism for limiting the expansion range of the folding joint, and the locking mechanism includes a lock tongue that is movably arranged on one of the three parts of the base rod, the first rotating rod and the second rotating rod Set on the locking end on the other two pieces. The limit mechanism makes the folding joint in the unfolded position, that is, the position unfolded to the limit. In this position, the locking tongue blocks the movement path formed by the locking end when the folding joint is folded to limit the folding of the folding joint, so that the folding joint is locked. Locked in the unfolded position, the lock is secure, and the lock is easy to put in place.

Description

Folding joints and strollers with folding joints

technical field

The invention specifically relates to a folding joint and a stroller for children with the folding joint.

Background technique

In the prior art, products that can be unfolded or folded, such as baby strollers, child seats, etc., all involve folding joints that can be unfolded or folded. The folding joint includes three parts: a base rod, a first rotating rod, and a second rotating rod. One end of any two parts in the three parts is connected in rotation, and one end of the third part is connected to the other part of the two parts. One end of at least one is rotationally connected. When the folding joint is in the unfolded position, the base rod, the first rotating rod, and the second rotating rod are mutually unfolded. When the folding joint is in the folded position, the base The rod, the first rotating rod, and the second rotating rod move closer to each other, and the folding joint further includes a locking mechanism for locking the folding joint in an unfolded position. The locking mechanism includes openings respectively opened on one end of the base rod, one end of the first rotating rod and one end of the second rotating rod, and a movable lock tongue passes through the three openings simultaneously to lock the folding joint.

Contents of the invention

The technical problem to be solved by the present invention is to provide a folding joint.

In order to solve the above technical problems, the technical solution adopted by the present invention is: a folding joint with an unfolded position and a folded position, including three parts: a base rod, a first rotating rod, and a second rotating rod. One end of any two parts is rotatably connected, and one end of the third part is rotatably connected to one end of at least one of the two parts. When the folding joint is in the unfolded position, the base rod, the first rotating rod 1. The second rotating rods are mutually unfolded. When the folding joint is in the folded position, the base rod, the first rotating rod and the second rotating rod are close to each other. The folding joint also includes a A locking mechanism that locks the folding joint in the unfolded position. The folding joint also includes a limit mechanism for limiting the expansion range of the folding joint. The locking mechanism includes a movable set on the base rod, the The locking tongue on one of the three parts of the first rotating rod and the second rotating rod, and the locking end fixedly arranged on the other two parts, when the locking mechanism is in the locked position, the The locking tongue is located on the movement path formed by the locking end when the folding joint is folded, and the locking tongue blocks one side of the locking end, thereby restricting the folding of the folding joint. When the locking mechanism is in the unlocked position, the locking tongue leaves the moving path formed by the locking end when the folding joint is folded, thereby allowing the folding joint to be folded.

In some embodiments, the base rod, the first rotating rod and the second rotating rod have a lock hole on the part where the locking tongue is located. The locking mechanism is in the locking position, and the locking bolt is inserted into the locking hole.

In some embodiments, the limiting mechanism is disposed between at least two of the three components of the base rod, the first rotating rod and the second rotating rod.

In some embodiments, one end of the base rod, one end of the first rotating rod and one end of the second rotating rod are respectively flat and stacked together, the One end of the base rod is located between one end of the first rotating rod and one end of the second rotating rod.

In some further embodiments, the limiting mechanism includes a first limiting part fixed on the edge of one end of the base rod, a protrusion fixed on the edge of one end of the first rotating rod For the second limiting part, when the folding joint is in the unfolded position, the first limiting part is in conflict with the second limiting part.

In some still further embodiments, the limiting mechanism includes a third limiting part fixed on the edge of one end of the base rod, protrudingly fixed on the edge of one end of the second rotating rod The fourth limiting part, when the folding joint is in the unfolded position, the third limiting part is in conflict with the fourth limiting part, the first limiting part and the third limiting part The parts are located on both sides of the lock tongue.

In some further embodiments, the limiting mechanism includes a fifth limiting part protrudingly fixed on one end of the first rotating rod, and a fifth limiting part protrudingly fixed on one end of the second rotating rod. The sixth limiting part, one end of the base rod is provided with an avoidance space for accommodating the fifth limiting part and the sixth limiting part, when the folding joint is in the unfolded position, the The fifth limiting portion is in conflict with the sixth limiting portion.

In some further embodiments, the lock bolt is arranged on the base rod, and the two locking ends are respectively located on the first rotating rod and the second rotating rod, when The locking mechanism is in the locking position, and the two locking ends respectively abut against opposite sides of the locking tongue.

In some embodiments, the resilient member tends to lock and stabilize the locking mechanism in the locked position.

In some embodiments, the rotation axis of the base rod, the rotation axis of the first rotation rod and the rotation axis of the second rotation rod coincide.

Another technical solution adopted by the present invention is to provide a stroller for children.

In order to solve the above technical problems, the technical solution adopted by the present invention is: a children's stroller, including the folding joint of any one of the above technical solutions, the first rotating rod constitutes the front wheel bracket, and the base rod The rear wheel bracket is formed, the second rotating rod constitutes a push rod, the other end of the first rotating rod is provided with a front wheel assembly, and the other end of the base rod is provided with a rear wheel assembly, so The other end of the second rotating rod is provided with a push handle.

The scope of the present invention is not limited to technical solutions formed by a specific combination of the above technical features, but also covers other technical solutions formed by any combination of the above technical features or equivalent features. For example, a technical solution formed by replacing the above-mentioned features with (but not limited to) technical features with similar functions disclosed in this application.

Due to the application of the above technical solutions, the present invention has the following advantages compared with the prior art: the present invention provides a folding joint with a new technical concept, and the limit mechanism makes the folding joint be in the unfolded position, that is, the position unfolded to the limit, In this position, the locking tongue blocks the movement path formed by the locking end when the folding joint is folded to limit the folding of the folding joint, so that the folding joint is locked in the unfolded position, the locking is firm, and the locking is easy to put in place.

Description of drawings

Figure 1 is a schematic diagram of a stroller (the folding joint is in the unfolded position);

Figure 2 is a schematic diagram of the stroller (the folding joint is in the folded position);

Figure 3 is an exploded schematic view of the folding joint;

Fig. 4 is an enlarged schematic diagram of the folding joint in the unfolded position at A in Fig. 1 (the shell is omitted);

Fig. 5 is an enlarged schematic diagram of the folding joint in the folded position at B of Fig. 2 (the shell is omitted);

Fig. 6 is the enlarged schematic diagram of K direction of accompanying drawing 5;

Figure 7 is an exploded schematic diagram of the folding joint (the second embodiment of the limiting mechanism);

Figure 8 is an enlarged schematic view of the folding joint in the unfolded position (the second embodiment of the limiting mechanism);

Fig. 9 is an enlarged schematic diagram of the folding joint in the folding position (the second embodiment of the limiting mechanism);

Among them: 1. Base rod; 2. First rotating rod; 3. Second rotating rod; 4. First shaft; 51. Lock tongue; 52. Second shaft; 53. Lock hole; 54. Locking end; 55 , Elastic part; 61, the first limiting part; 62, the second limiting part; 63, the third limiting part; 64, the fourth limiting part; 65, the fifth limiting part; 66, the sixth limiting part Department; 67, avoidance space; 7, front wheel assembly; 8, rear wheel assembly.

detailed description

As shown in the drawings, a folding joint includes a base rod 1 , a first rotating rod 2 and a second rotating rod 3 . One end of the base rod 1, one end of the first rotating rod 2 and one end of the second rotating rod 3 are rotatably connected to two of the three parts, and the third part is rotatably connected to at least one of the two parts , that is, the three parts can be connected in rotation through one rotation shaft, or can be connected in rotation through two rotation shafts. If there are two rotating shafts, preferably, the center lines of the two rotating shafts coincide with each other. In this embodiment, these three components are connected by the first shaft 4 for coaxial rotation. Moreover, one end of the base rod 1, one end of the first rotating rod 2 and one end of the second rotating rod 3 are flat and stacked together, as shown in Figures 4 and 6, the base rod 1 One end is located between one end of the first rotating rod 2 and one end of the second rotating rod 3 .

A fold joint has an unfolded position and a folded position. As shown in accompanying drawings 1 and 4, at this moment, the folding joint is in the unfolded position, and the base rod 1, the first rotating rod 2, and the second rotating rod 3 are mutually unfolded. As shown in Figures 2 and 5, at this time, the folding joint is in the folded position, and the base rod 1, the first rotating rod 2, and the second rotating rod 3 are close to each other.

The folding joint also includes a locking mechanism for locking the folding joint in the deployed position. The locking mechanism includes a lock tongue 51 movably arranged on one of the three parts of the base rod 1 , the first rotating rod 2 and the second rotating rod 3 , and a locking end 54 fixedly arranged on the other two parts. In this embodiment, as shown in Figures 3-6, the lock tongue 51 is connected to the base rod 1 by rotation around the second shaft 52, and the two locking ends 54 are located on the first rotation rod 2 and the second rotation rod 3 respectively. Above, the second axis 52 is spatially perpendicular to the first axis 4 . As shown in Figure 6, one end of the base rod 1, one end of the first rotating rod 2 and one end of the second rotating rod 3 are flat and stacked together, and one end of the base rod 1 is located at the first Between one end of the first rotating rod 2 and one end of the second rotating rod 3 , the base rod 1 is provided with a locking hole 53 through which the locking tongue 51 passes. As shown in Figures 2 and 5, when the folding joint is in the folded position, the first rotating rod 2 and the second rotating rod 3 are respectively located on both sides of the base rod 1 and move closer to the base rod 1 .

The folding joint also includes a limit mechanism. As shown in Figures 4 and 5, the limiting mechanism can limit the range of the folding joint when it is unfolded, that is, under the action of the limiting mechanism, the folding joint is in the unfolding limit position in the unfolded position, and cannot be further unfolded and rotated. Instead, it can only be rotated toward the folded position.

Therefore, when the locking mechanism is in the locked position, as shown in Figure 4, at this moment, the dead bolt 51 is inserted in the lock hole 53, and the dead bolt 51 is located on the moving paths formed by the two locking ends 54 when the folding joints are folded. The lock tongue 51 respectively blocks one side of the two locking ends 54 , or in other words, the two locking ends 54 respectively abut against opposite sides of the lock tongue 51 . The fold joint is locked in the unfolded position.

Drive the locking tongue 51 to leave the moving path formed by the two locking ends 54 when the folding joint is folded. At this time, the locking mechanism is in the unlocked position, thereby allowing the folding joint to be folded to the state shown in FIG. 5 .

As shown in FIG. 6 , an elastic member 55 may be provided between the lock tongue 51 and the base rod 1 , so that the state of the locking mechanism at the locked position is more stable. Moreover, the elastic member 55 also enables the locking mechanism to automatically lock the folding joint at the unfolding position after the folding joint is converted from the folded position to the unfolded position, which brings convenience to the user's operation. The elastic member 55 can be a torsion spring or a compression spring or the like.

Not shown, regarding the position of the locking tongue 51 , the locking tongue 51 can also be arranged on one end of the first rotating rod 2 or one end of the second rotating rod 3 . In addition to being rotatably connected around the second shaft 52 in this embodiment, the locking tongue 51 may also have other connection methods, such as slidingly arranged on the base rod 1 along the length direction of the base rod 1 .

Regarding the limiting mechanism, the limiting mechanism is arranged between at least two of the three components of the base rod 1 , the first rotating rod 2 and the second rotating rod 3 .

As shown in the accompanying drawings 3-5, the first embodiment of the limit mechanism includes a first limit portion 61 fixed on the edge of one end of the base rod 1, and a protruding edge fixed on one end of the first rotating rod 2. The second limiting part 62 of the part, the third limiting part 63 fixed on the edge of one end of the base rod 1, and the fourth limiting part 64 protruding and fixed on the edge of one end of the second rotating rod 3, so The first limiting portion 61 and the third limiting portion 63 are located on two sides of the locking tongue 51 . When the folding joint is in the unfolded position, the first limiting portion 61 is in conflict with the second limiting portion 62 , and the third limiting portion 63 is in conflict with the fourth limiting portion 64 .

The limiting mechanism also includes a fifth limiting portion 65 protruding and fixed on one end of the first rotating rod 2, a sixth limiting portion 66 protruding and fixed on one end of the second rotating rod 3, and the base rod One end of 1 is provided with an escape space 67 for accommodating the fifth limiting portion 65 and the sixth limiting portion 66. The fifth limiting portion 65 and the sixth limiting portion 66 are located in the avoiding space 67. When the folding joint is unfolded In the lower position, the fifth limiting portion 65 is in contact with the sixth limiting portion 66 . This makes the folding joint more stable in the unfolded position.

As shown in accompanying drawings 7-9, in the second embodiment of the limit mechanism, the base rod 1 is provided with a sliding member 104 slidingly through the first shaft 4 and the fixed pin 111, and the driving member 141 is connected to the sliding member 4. A first guide groove 121 is provided on the first rotating rod 2, a second guide groove 131 is provided on the second rotating rod 3, and the driving member 141 is slidably inserted in the first guide groove 121 and the second guide groove 131 respectively, and the folding joint In the process of unfolding or folding, the driver 141 moves relative to the first guide groove 121 and the second guide groove 131 at the same time, and the driver 141 moves with the slider 4 relative to the base rod 1, so that the first rotating rod 2, the second The rotation rod 3 and the base rod 1 rotate among the three parts, and the first guide groove 121 and the second guide groove 131 limit the expansion range of the first rotation rod 2 and the second rotation rod 3 relative to the base rod 1 .

The folding joint is applied to children's products. In this example, a children's stroller is taken as an example. As shown in accompanying drawings 1 and 2, the first rotating rod 2 constitutes the front wheel bracket of the stroller, and the other end of the first rotating rod 2 is provided with a front wheel assembly 7; the base rod 1 constitutes the rear of the stroller. Wheel bracket, and the other end of base bar 1 is provided with rear wheel assembly 8; The cart frame for the cart. Seats are set on the stroller frame and can be used for children to ride and use, which is not shown in the seat diagram.

The above folding joints can also be applied in child seats, such as the first rotating rod 2 constitutes the front bracket supporting the seat mechanism, the base rod 1 constitutes the rear bracket supporting the seat mechanism, and the second rotating rod 3 constitutes the backrest rod of the seat mechanism.

As mentioned above, we have fully described according to the purpose of the present invention, but the present invention is not limited to the above-mentioned embodiments and implementation methods. Practitioners in the relevant technical fields may make various changes and implementations within the scope permitted by the technical ideas of the present invention.

The present invention has been described in detail above, and the description of the embodiment is only used to help understand the method of the present invention and its core idea. This limits the protection scope of the present invention. All equivalent changes or modifications made according to the spirit of the present invention shall fall within the protection scope of the present invention.

Claims (10)

1. a kind of folding joint with expanded position and folding position, including pedestal bar（1）, the first rotating bar（2）, second turn Lever（3）Three parts, the one end of any two part in this three parts rotates and connects, the one end of the 3rd part Rotate with the one end of at least one of two parts and be connected, when described folding joint is in the deployed down, pedestal bar （1）, the first rotating bar（2）, the second rotating bar（3）Between mutually launch, when described folding joint is under folding position, base Seat bar（1）, the first rotating bar（2）, the second rotating bar（3）Mutually draw close, described folding joint also includes for will be described Folding joint be locked in locking mechanism under expanded position it is characterised in that：Described folding joint is also included for limiting The folding joint stated launches the position-limit mechanism of amplitude, and described locking mechanism includes being movably arranged on described pedestal bar（1）, institute The first rotating bar stated（2）With the second described rotating bar（3）Dead bolt on one of three parts part（51）, fixation set Put the keyed end on two other part（54）, when described locking mechanism is in the locked position down, described dead bolt（51） It is only located at described keyed end（54）Dead bolt on the mobile route being formed when folding joint folds and described（51）Gear exists Each described keyed end（54）Side, thus limit described folding joint folding, when described locking mechanism is located at solution Under lock position, described dead bolt（51）Leave described keyed end（54）The mobile route being formed when folding joint folds, from And allow described folding joint to fold；

Described pedestal bar（1）, the first described rotating bar（2）With the second described rotating bar（3）Described in three parts Dead bolt（51）Lockhole is had on that part being located（53）, when described locking mechanism is located under latched position, described lock Tongue（51）It is inserted in described lockhole（53）Interior.

2. folding joint according to claim 1 it is characterised in that：Described position-limit mechanism is arranged at described pedestal bar （1）, the first described rotating bar（2）With the second described rotating bar（3）Between in three parts at least two.

3. folding joint according to claim 1 it is characterised in that：Described pedestal bar（1）One end, described One rotating bar（2）One end and the second described rotating bar（3）One end be in flat and stacking respectively, described Pedestal bar（1）One end part in the first described rotating bar（2）One end and the second described rotating bar（3）One end Between portion.

4. folding joint according to claim 3 it is characterised in that：Described position-limit mechanism includes being fixed on described base Seat bar（1）First limiting section of one end edge part（61）, protrude and be fixed on the first described rotating bar（2）One end edge part The second limiting section（62）, when described folding joint is in the deployed down, described the first limiting section（61）With described Second limiting section（62）Inconsistent.

5. folding joint according to claim 4 it is characterised in that：Described position-limit mechanism further includes to be fixed on institute The pedestal bar stated（1）3rd limiting section of one end edge part（63）, protrude and be fixed on the second described rotating bar（3）One end 4th limiting section of edge part（64）, when described folding joint is in the deployed down, described the 3rd limiting section（63）With The 4th described limiting section（64）Inconsistent, described first limiting section（61）With described 3rd limiting section（63）Positioned at described dead bolt （51）Both sides.

6. folding joint according to claim 3 it is characterised in that：Described position-limit mechanism includes protrusion and is fixed on first Rotating bar（2）One end on the 5th limiting section（65）, protrude and be fixed on the second described rotating bar（3）One end on 6th limiting section（66）, described pedestal bar（1）One end on have and house the 5th described limiting section（65）With the 6th limit Position portion（66）Avoidance space（67）, when described folding joint is in the deployed down, described the 5th limiting section（65）With The 6th described limiting section（66）Inconsistent.

7. folding joint according to claim 3 it is characterised in that：Described dead bolt（51）It is arranged at described pedestal bar （1）On, keyed end described in two（54）It is located at the first described rotating bar respectively（2）With the second described rotating bar（3）On, When described locking mechanism is located at the keyed end under latched position, described in two（54）It is against described dead bolt respectively（51）Phase To both sides.

8. folding joint according to claim 1 it is characterised in that：Described locking mechanism is further comprising administering to described lock Tongue（51）The elastic component of elastic force（55）, described elastic component（55）So that described locking mechanism tends to locking and in locking bit Put lower stable.

9. folding joint according to claim 1 it is characterised in that：Described pedestal bar（1）Rotational axis line, described The first rotating bar（2）Rotational axis line and the second described rotating bar（3）Rotational axis line coincide.

10. a kind of children trolley of the described folding joint of any one having in claim 1-9 it is characterised in that： The first described rotating bar（2）Constitute front-wheel support, described pedestal bar（1）Constitute rear wheel support, described the second rotating bar （3）Constitute push rod, described the first rotating bar（2）The other end be provided with front component（7）, described pedestal bar（1）'s The other end is provided with wheel assembly（8）, described the second rotating bar（3）The other end be provided with pushing hands handle.