CN104527758B - Folding joint and stroller with folding joint - Google Patents

Abstract

A folding joint with an unfolded position and a folded position, and a stroller with the folded joint, the folded joint includes a base rod, a first rotating rod and a second rotating rod that are rotatably connected to each other, and the folded position has a first folding position, the second folded position further folded and folded on the basis of the first folded position, the folding joint also includes a secondary fold limit assembly, the secondary fold limit assembly is arranged in the base rod, the first rotation rod and the second rotation rod On any one of the two rotation rods, and at least one of the other two of the base rod, the first rotation rod and the second rotation rod is provided with a limited folding part. It can be folded to the first folding position. When the secondary folding limiting component is separated from the limiting part, the folding joint can be further folded and gathered to the second folding position on the basis of the first folding position. The volume is small, which is convenient for transportation and reduces transportation costs. cost.

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 usually includes a base rod, a first rotating rod and a second rotating rod, and a locking mechanism for locking the folding joint so as to prohibit rotation, one end of the base rod, the first One end of the rotating rod is rotationally connected with two of the three parts at the one end of the second rotating rod, and the third part is rotationally connected with at least one of the two parts. When the folding joint is in the unfolded position, the first rotating rod and the second rotating rod extend substantially in a straight line; when the folding joint is in the folding position, the first rotating The rod and the second rotating rod are close to the two sides of the base rod. Usually a folded joint has only one folded state after being folded. After some folding joints are folded, the angle between the base rod, the first rotating rod and the second rotating rod is relatively small, and the volume is small, but the product cannot stand on its own. After some folding joints are folded, for example, the angle between the base rod and the first rotating rod or the second rotating rod is still relatively large, which can form a support on the ground to achieve self-support, but the volume is large, which is not conducive to transportation. Shipping costs are higher.

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 a base rod, a first rotating rod and a second rotating rod, one end of the base rod 1. One end of the first rotating rod is rotationally connected to any two of the three parts at the one end of the second rotating rod, and the third part is rotationally connected to at least one of the two parts. The folding position mentioned above includes the first folding position and the second folding position which is further folded and folded on the basis of the first folding position, and the folding joint also includes a secondary folding limiting component, which is arranged on the On any one of the base rod, the first rotating rod and the second rotating rod, and at least one of the other two of the base rod, the first rotating rod and the second rotating rod is provided with a limited folding part, When the secondary folding limiting component cooperates with the folding limiting part, the folding joint can only be folded to the first folding position; when the secondary folding limiting component matches the folding limiting part After separation, the folding joint can be further folded to the second folding position on the basis of the first folding position.

In some embodiments, the secondary bending limiting assembly includes a sliding or rotating locking spring pin, and an elastic member that makes the folding locking spring pop up in a direction that can cooperate with the folding locking part. .

In some embodiments, the said fold restricting part is a fold restricting groove, and when the said secondary fold restricting component cooperates with said fold restricting part, said secondary fold restricting component is inserted into said and can slide in the fold-limiting groove, when the secondary fold-limiting component is separated from the fold-limiting part, the fold-limiting elastic pin is disengaged from the fold-limiting groove.

In some embodiments, the secondary folding limiting component is arranged on the base rod, and the folding limiting part is arranged on the first rotating rod and/or the second rotating rod superior.

In some further embodiments, the base rod has a fixed mounting seat, and one end of the first rotating rod is located between the mounting seat and one end of the base rod, The secondary folding limiting component is connected and arranged on the mounting seat, and the folding limiting part is arranged on one end of the first rotating rod.

In some still further embodiments, the installation base is provided with a storage space with an opening facing one end of the first rotating rod, and the secondary folding limiting assembly is located in the storage space. One end of the base rod is provided with a base rod through hole, and one end of the second rotating rod is provided with a second rotating rod through hole. When the folding joint is in the first folding position, the The through-hole of the second rotating rod is opposite to the through-hole of the base rod and the secondary folding limiting assembly.

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 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.

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 coaxially connected by a first shaft.

In some embodiments, when the folding joint is in the unfolded position, the secondary folding limiting component cooperates with the folding limiting part.

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-mentioned technical solution, the present invention has the following advantages compared with the prior art: the secondary folding limiting component makes the folding position of the folding mechanism have the first folding position and the second folding position, when the folding joint is located at the first folding position, The distance between at least two of the three parts of the base rod, the first rotating rod and the second rotating rod is relatively large, and the front and rear support on the ground can form a folded self-standing, The folding joint is located in the second folding position, so that the three parts of the base rod, the first rotating rod and the second rotating rod are further moved closer together, and the volume is small, which is convenient for transportation and reduces transportation costs.

Description of drawings

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

Fig. 2 is a schematic diagram of the stroller (the folding joint is in the first folding position);

Fig. 3 is a schematic diagram of the stroller (the folding joint is in the second folding position);

Figure 4 is an exploded schematic view of the folding joint;

Fig. 5 is an enlarged schematic diagram of the folding joint in the unfolded position at A in Fig. 1;

Fig. 6 is an enlarged schematic diagram of the folding joint in the first folding position at B of Fig. 2;

Fig. 7 is an enlarged schematic diagram of the folding joint in the second folding position at C of the accompanying drawing 3;

Fig. 8 is the enlarged schematic diagram of K direction of accompanying drawing 1;

Among them: 1. Base rod; 11. Mounting base; 111. Storage space; 2. The first rotating rod; 3. The second rotating rod; 4. The first shaft; Spring pin; 52. Elastic member; 53. Fold limiting part; 54. Through hole of the second rotating rod; 55. Through hole of base rod; 7. Front wheel assembly; 8. Rear wheel assembly.

detailed description

As shown in the accompanying drawings, a folding joint has an unfolded position and a folded position, in which part of the shell that should be arranged outside the folding joint is omitted.

As shown in accompanying drawings 4-7, the 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 the second rotating rod Two of the three parts at one end of 3 are rotatably connected, and the third part is rotatably connected to at least one of the two parts, that is, the three parts can be rotatably connected by one rotating shaft or by two rotating shafts Turn to connect. 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. And, 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 Figure 8, one end of the base rod 1 It is located between one end of the first rotating rod 2 and one end of the second rotating rod 3 .

The folding joint also includes a locking mechanism for locking the folding joint so as to prohibit the relative rotation of the base rod 1 , the first rotating rod 2 and the second rotating rod 3 . The locking mechanism is not the gist of the present invention, as long as the locking mechanism can be used between two or three parts that rotate, it will not be described in detail.

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 1-3, the first rotating rod 2 constitutes the front wheel bracket of the children's stroller, and the other end of the first rotating rod 2 is provided with the front wheel assembly 7; the base rod 1 constitutes the rear of the children's 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.

As shown in Figures 2, 3, 6, and 7, during the folding process, the folding joint has a first folding position and a second folding position based on the first folding position. As shown in accompanying drawings 4-8, the folding joint also includes a secondary folding limiting assembly 50, which is arranged on any one of the base rod 1, the first rotating rod 2 and the second rotating rod 3, At least one of the other two of the base rod 1, the first rotating rod 2 and the second rotating rod 3 is provided with a limited folding portion 53, and through the cooperation of the folding limiting portion 53 and the secondary folding limiting assembly 50, the basic Folding between the three components of the seat post 1 , the first pivot bar 2 and the second pivot bar 3 between the first position and the second position. That is, when the secondary folding limiting component 50 cooperates with the folding limiting part 53, the folding joint can only be folded to the first folding position; The first position is further folded to a second folded position. When the folding joint is in the unfolded position, the secondary folding limiting component 50 cooperates with the folding limiting part 53 .

For example, in this embodiment, the secondary folding limiting assembly 50 is arranged on the base rod 1, and the folding limiting part 53 is arranged on the first rotating rod 2 to limit the distance between the base rod 1 and the first rotating rod 2. Continue to rotate; not shown in the figure, or the secondary folding limiting assembly 50 is arranged on the base rod 1, and the folding limiting part 53 is arranged on the second rotating rod 3 to limit the distance between the base rod 1 and the second rotating rod 3 or the first rotating rod 2 and the second rotating rod 3 are both provided with a limited folding portion 53 for limiting the relative rotation of the base rod 1 .

As shown in Figures 4-8, the base rod 1 has a fixed mounting seat 11, which is a part of the base rod 1, and the connection between the two is omitted in the figure. In this embodiment, the mounting seat 11 is fixed to the base rod 1 and is also an outer casing arranged outside the folding joint. As shown in FIG. 8 , one end of the first rotating rod 2 is located between the mounting base 11 and one end of the base rod 1 , and the secondary folding assembly 50 includes a The folding-limiting spring pin 51 slidably connected to the installation base 11 and the elastic member 52 that makes the folding-limiting spring pin 51 pop out. One end of the first rotating rod 2 is provided with a limited fold portion 53. In this embodiment, the fold limited portion 53 is a fold limit groove. The shown secondary folding restricting component 50 is inserted into the folding restricting groove and can slide in the folding restricting groove. When the secondary folding restricting component 50 is separated from the folding restricting part 53, the folding restricting spring pin 51 is disengaged from the folding restricting groove.

Not shown, the fold restricting portion 53 may also be formed by protruding outward from the plane where one end portion of the flat first rotating rod 2 is located.

Not shown in the figure, the spring pin 51 may be rotatably connected to the mounting base 11 around a second axis, and the second axis is perpendicular to the first axis 4 in space.

When the secondary folding limiting component 50 cooperates with the folding limiting part 53, when the folding joint is folded to the first folding position, as shown in Figure 6, the folding limiting elastic pin 51 slides to one end of the folding limiting groove and cannot continue to slide , thereby restricting the relative rotation between the first rotating rod 2 and the base rod 1, so that the folding joint can only be folded to the first folding position during the folding process. At this time, taking a children's stroller as an example, the angle between the base rod 1 and the first rotating rod 2 shown in accompanying drawings 2 and 6 is relatively larger than that shown in accompanying drawings 3 and 7, and the angle on the first rotating rod 2 is relatively large. The push handles on the front wheel assembly 7 and the second rotating rod 3 are all supported on the ground, thereby forming better support to the whole children's stroller.

When the secondary fold-limiting component 50 is separated from the fold-limiting part 53, as shown in FIG. The relative rotation between the rotating rod 2 and the base rod 1 can be continued, so that the folding joint continues to rotate and fold to the second folding position on the basis of the first folding position. At this time, also taking a children's stroller as an example, as shown in Figure 3, the base rod 1 and the first rotating rod 2 are further moved closer together, so that the front wheel assembly 7 on the first rotating rod 2 and the second The position of the push handle on the turning rod 3 is relatively tight, and cannot form a good support for the whole stroller, but at this time, the volume is small, which is convenient for packing and transporting.

As shown in FIG. 8 , there is a receiving space 111 with an opening facing one end of the first rotating rod 2 on the mounting base 11 , the folding pin 51 and the elastic member 52 are located in the receiving space 111 , and one end of the base rod 1 There is a base rod through hole 55, and one end of the second rotating rod 3 has a second rotating rod through hole 54. When the folding joint is in the first folding position, as shown in Figure 6, the second rotating rod through hole 54 faces the through hole 55 of the base rod and the fold-limiting spring pin 51. If it is necessary to separate the fold-limiting spring pin 51 from the fold-limiting groove, as shown in Figure 8, an external rod-shaped object, such as a screwdriver, can be used to pass through the first The two rotating rod through holes 54 and the base rod through holes 55 overcome the elastic force of the elastic member 52 and press the folding pin 51 to break away from the folding groove, and the folding joint can be folded to the position shown in accompanying drawing 7. down in the second folded position. And the folding joint is placed in the process of unfolding, that is, one end of the base rod 1 and one end of the first rotating rod 2 are in the process of rotation, as long as the folding limiting spring pin 51 faces the limiting folding groove, the folding limiting elastic pin 51 Under the elastic force of the elastic member 52 , it will spring back into the fold-limiting groove, and the secondary fold-limiting component 50 and the fold-limiting part 53 are in a mated state again. Consumers generally only need to use the first folded position during use, such as a baby stroller, which generally only needs to switch between the unfolded position and the first folded position during use. Therefore, the consumer cannot arbitrarily press and remove the folding-limiting spring pin 51 of the secondary folding-limiting component 50, which also ensures the stability and service life of the product structure.

In this embodiment, the secondary folding limiting assembly 50 is arranged between the base rod 1 and the first rotating rod 2 . Or not shown in the figure, the secondary folding limiting assembly 50 can also be arranged between the base rod 1 and the second rotating rod 3 , that is, it only needs to arrange the folding restricting part 53 on one end of the second rotating rod 3 . On the first rotating rod 2 , a first rotating rod through hole for controlling the separation of the secondary folding restricting assembly 50 and the folding restricting part 53 may be provided.

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 (11)

1. A folding joint with an unfolded position and a folded position, comprising a base rod (1), a first rotating rod (2) and a second rotating rod (3), one end of the base rod (1) 1. One end of the first rotating rod (2) is rotationally connected to any two of the three parts at the one end of the second rotating rod (3), and the third part is connected to one of the two parts At least one rotational connection, characterized in that: the folded position includes a first folded position, a second folded position further folded on the basis of the first folded position, and the folded joint also includes a secondary fold limiting component (50) , the secondary folding limiting assembly (50) is set on any one of the base rod (1), the first rotating rod (2) and the second rotating rod (3), and the basic At least one of the other two of the seat post (1), the first rotating rod (2) and the second rotating rod (3) is provided with a limited folding part (53), when the secondary folding limited component (50 ) cooperates with the folding limiting part (53), the folding joint can only be folded to the first folding position, when the secondary folding limiting component (50) and the folding limiting part (53 ) after separation, the folding joint can be further folded to the second folding position on the basis of the first folding position. 2. The folding joint according to claim 1, characterized in that: the secondary folding limiting assembly (50) includes a sliding or rotating locking spring pin (51), so that the folding locking pin ( 51) An elastic member (52) that pops up in a direction capable of cooperating with the fold limiting portion (53). 3. The folding joint according to claim 2, characterized in that: the said folding restricting part (53) is a folding restricting groove, when said secondary folding restricting component (50) and said folding restricting part ( 53) When mated, the secondary folding limiting component (50) is inserted into the folding limiting groove and can slide in the folding limiting groove, when the secondary folding limiting component (50) and the After the fold-limiting part (53) is separated, the fold-limiting spring pin (51) is separated from the fold-limiting groove. 4. The folding joint according to claim 1, characterized in that: the secondary folding limiting component (50) is set on the base rod (1), and the folding limiting part (53) is set on the first rotating rod (2) and/or the second rotating rod (3). 5. The folding joint according to claim 4, characterized in that: the base rod (1) has a fixed mounting seat (11), and one end of the first rotating rod (2) is located at the Between the mounting seat (11) and one end of the base rod (1), the secondary bending limiting component (50) is connected and arranged on the mounting seat (11), and the The folding restricting part (53) is arranged on one end of the first rotating rod (2). 6. The folding joint according to claim 5, characterized in that: the mounting base (11) is provided with a receiving space (111) with an opening facing one end of the first rotating rod (2), the The secondary folding limiting assembly (50) is located in the receiving space (111), one end of the base rod (1) has a base rod through hole (55), and the second rotation There is a second rotation rod through hole (54) on one end of the rod (3). When the folding joint is in the first folding position, the second rotation rod through hole (54) faces the The through hole of the base rod (55) and the secondary folding limiting assembly (50). 7. The folding joint according to claim 1, characterized in that: one end of the base rod (1), one end of the first rotating rod (2) and the second rotating rod One end of (3) is flat and stacked together, one end of the base rod (1) is located between one end of the first rotating rod (2) and the second rotating rod ( 3) between one end. 8. The folding joint according to claim 1, characterized in that: the rotation axis of the base rod (1), the rotation axis of the first rotation rod (2) and the The rotation axes of the second rotation rod (3) coincide with each other. 9. The folding joint according to claim 1, characterized in that: one end of the base rod (1), one end of the first rotating rod (2) and the second rotating rod One end of (3) is coaxially connected through the first shaft (4). 10. The folding joint according to claim 1, characterized in that, when the folding joint is in the unfolded position, the secondary folding limiting component (50) cooperates with the folding limiting part (53). 11. A children's stroller with the folding joint according to any one of claims 1-10, characterized in that: the first rotating rod (2) constitutes the front wheel bracket, and the base The rod (1) constitutes the rear wheel bracket, the second rotating rod (3) constitutes a push rod, the other end of the first rotating rod (2) is provided with a front wheel assembly (7), and the base The other end of the seat post (1) is provided with a rear wheel assembly (8), and the other end of the second rotating rod (3) is provided with a push handle.