CN204236529U - Folding joint and children trolley - Google Patents

Abstract

The utility model discloses a folding joint and a stroller for children, comprising a base rod, a first rotating rod and a second rotating rod. The folding joint also includes a mechanism for locking the base rod, the first rotating rod and the second rotating rod In the locking mechanism, two of the three parts are rotationally connected, the first rotating rod is provided with a first guiding part, the second rotating rod is provided with a second guiding part, and the folding joint also includes a connecting rod and a connecting rod arranged at one end of the connecting rod. part of the moving part, the moving parts are respectively inserted in the first guide part and the second guide part, when the locking mechanism is unlocked, the second rotating rod is rotated and folded relative to the base rod, and the moving part moves in the second guide part, thus making the movement The part moves in a circular direction with the connecting rod as a radius, so as to drive the moving part to move in the first guide part, so that the first rotating rod rotates and folds relative to the base rod.

Description

Folding joints and strollers

technical field

The utility model relates to a folding joint which can be folded and a stroller for children with the folding joint.

Background technique

In the prior art, as the announcement number is CN1673003, and the name is disclosed in the special document called children's stroller, the stroller frame includes a front wheel bracket, a rear wheel bracket, and a push handle, and the front wheel bracket, the rear wheel bracket, and the push handle That is to constitute a folding joint, the rear end of the front wheel support is rotatably connected with the front end of the rear wheel support through a rotating shaft, and the front end of the rear wheel support is also rotatably connected with the front end of the push handle through another rotating shaft. The rear end of the push handle is fixed with a first tooth with a plurality of teeth, the front end of the push handle is fixed with a second tooth with a plurality of teeth, and the first tooth is engaged with the second tooth. When the cart frame is unfolded or folded, the second gear on the push handle can drive the first gear on the front wheel bracket to rotate, so that the front wheel bracket follows the push handle to complete unfolding or folding.

Contents of the invention

The purpose of the utility model is to provide a folding joint.

In order to achieve the above purpose, the technical solution adopted by the utility model is: a folding joint with an unfolded position and a folded position, including a base rod, a first rotation rod and a second rotation rod that rotate relative to the base rod, the base One end of the seat post, one end of the first rotating rod and one end of the second rotating rod are rotatably connected to two of the three parts, and the third part is rotatably connected to at least one of the two parts , the first rotating rod is provided with a first guiding part, and the second rotating rod is provided with a second guiding part, and the folding joint also includes a connecting rod and a setting rod connected in rotation on the base rod The moving part at one end of the connecting rod is slidably matched with the first guide part and the second guide part respectively, and the folding joint is in the process of unfolding or folding. The moving part moves relative to the first guide part and the second guide part, and the connecting rod rotates relative to the base rod, so that the base rod, the first rotation rod and the second The rotation between the three parts of the two rotating rods.

Preferably, the rotation center point of the base rod relative to the first rotation rod or the second rotation rod, the rotation center point of the connecting rod relative to the base rod, the center of the moving part Points, the three make up the three vertices of a triangle.

Preferably, the distance between one end to the other end of the first guide part and the rotation center of the first rotating rod is gradually shortened, and the first guiding part deviates with the rotation of the first rotating rod In the radial direction of the circle where the center is located, the distance between one end to the other end of the second guide part and the rotation center of the second rotating rod gradually becomes shorter, and the second guide part deviates from the second In the radial direction of the circle where the center of rotation of the rotating rod is located, when the folding joint is in the unfolded position, the moving parts are respectively located at one end of the first guide part and one end of the second guide part, when the The folding joint is in the folded position, and the moving parts are respectively located at the other end of the first guiding part and the other end of the second guiding part.

The folding joint according to claim, characterized in that: the first guide part and the second guide part are respectively arc-shaped.

Preferably, the first guide part and the second guide part are respectively guide grooves, and the moving part is inserted into these two guide grooves.

Preferably, the first guide part and the second guide part are ribs respectively, and the two ends of the moving part respectively have grooves, and each groove slides with the corresponding two ribs Cooperate, the moving part is rotatably connected with the connecting rod.

Preferably, one end of the base rod, one end of the first rotating rod and one end of the second rotating rod are pivotally connected via a first rotating shaft.

A children's stroller including the above-mentioned folding joint, said children's stroller also includes a front wheel assembly arranged at the other end of the first rotating rod, and a front wheel assembly arranged at the other end of the base rod part of the rear wheel assembly, the other end of the second rotating rod is provided with a push handle.

Due to the application of the above-mentioned technical solutions, the utility model has the following advantages compared with the prior art:

When the locking mechanism is unlocked, the second rotating rod is turned and folded relative to the base rod, and the moving part moves in the second guiding part, so that the moving part moves in a circular direction with the connecting rod as the radius, thereby driving the moving part in the first guiding part Move, so that the first rotating rod is rotated and folded relative to the base rod, that is, the first rotating rod, the base rod and the second rotating rod are rotated and close together.

Description of drawings

Accompanying drawing 1 is the front view of the cart frame of the present invention (the cart frame is in the unfolded position);

Accompanying drawing 2 is the front view of the cart frame of the present invention (the cart frame is in a folded position);

Accompanying drawing 3 is the exploded schematic diagram of folding joint of the present invention;

Accompanying drawing 4 is a schematic diagram of the movement of the folding joint of the present invention (the folding joint is in the unfolded position);

Accompanying drawing 5 is a schematic diagram of the movement of the folding joint of the present invention (the folding joint is in the folded position);

Accompanying drawing 6 is the exploded schematic view of the folding joint of the second embodiment.

In the above drawings: 1, base rod; 2, first rotating rod; 3, second rotating rod; 4, first guiding part; 5, second guiding part; 6, connecting rod; 7, moving part; 8 , avoidance slot; 9, the first rotating shaft; 10, the front wheel assembly; 11, the rear wheel assembly; 12, the push handle.

Detailed ways

The utility model will be further described below in conjunction with the embodiment shown in the accompanying drawings:

Embodiment 1: Referring to Figures 3-5, a folding joint with an unfolded position and a folded position includes a base rod 1, a first rotating rod 2, and a second rotating rod 3. The folding joint also includes a The locking mechanism for locking the base bar 1, the first rotating bar 2 and the second rotating bar 3, the locking mechanism is not the main point of the present invention, as long as it can be locked between the two rotating parts, it is applicable.

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. In this embodiment, 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 pivotally connected through the first rotating shaft 9 . The center of rotation mentioned in the following documents is the axis of the first rotating shaft 9 .

The first rotating rod 2 is provided with a first guide part 4, the second rotating rod 3 is provided with a second guide part 5, and the folding joint also includes a connecting rod 6 and a moving part 7 arranged at one end of the connecting rod 6, the moving part 7 are respectively slidably matched with the first guide part 4 and the second guide part 5. During the unfolding or folding process of the folding joint, the movement of the moving part 7 relative to the first guide part 4 and the second guide part 5, and the movement of the moving part 7 With the rotation of the connecting rod 6 relative to the base rod 1 , the three parts of the base rod 1 , the first rotating rod 2 and the second rotating rod 3 are rotated.

Wherein, the moving part 7 is slidably matched with the first guide part 4 and the second guide part 5 respectively, as shown in this embodiment, the first guide part 4 and the second guide part 5 are guide grooves respectively, and the moving Part 7 is inserted in these two guide grooves.

The base rod 1 is relative to the rotation center point of the first rotation rod 2 or the second rotation rod 3, that is, the point where the first rotating shaft 9 is located, the rotation center point of the connecting rod 6 relative to the base rod 1, and the center point of the moving part 7, The three make up the three vertices of a triangle.

The distance between one end to the other end of the first guide part 4 and the center of rotation of the first rotating rod 2 is gradually shortened, and the first guide part 4 deviates from the radial direction of the circle where the center of rotation of the first rotating rod 2 is located. The distance between one end to the other end of the two guide parts 5 and the center of rotation of the second turning rod 3 is gradually shortened, and the second guide part 5 deviates from the radial direction of the circle where the center of rotation of the second turning rod 2 is located. When folding When the joint is in the unfolded position, the moving parts 7 are respectively located at one end of the first guide part 4 and one end of the second guide part 5; when the folding joint is in the folded position, the moving parts 7 are respectively located at the other end of the first guide part 4 and the second end The other end of the two guide parts 5.

The first guide part 4 and the second guide part 5 are arc-shaped respectively.

Operation instructions: As shown in attached drawings 4 and 5, during the transition of the folding joint from the unfolded position to the folded position, the second rotating rod 3 rotates closer to the base rod 1, and the moving part 7 is guided by the second guide part 5. One end moves to the other end, and the connecting rod 6 rotates clockwise relative to the rotation center point of the base rod 1, so that the moving part 7 also moves from one end of the first guide part 4 to the other end, so that the first rotating rod 2 and the second The rotating rod 3 rotates towards the base rod 1 synchronously; during the transition of the folding joint from the folded position to the unfolded position, the second rotating rod 3 rotates away from the base rod 1, and the moving part 7 is guided by the other end of the second guide part 5 Moving to one end, the connecting rod 6 rotates counterclockwise relative to the rotation center point of the base rod 1, so that the moving part 7 also moves to one end from the other end of the first guide part 4, so that the first rotating rod 2 and the second rotating rod 3 Rotate away from base rod 1 synchronously.

The above-mentioned folding joint can be used on a children's stroller. As shown in Figure 1-2, the children's stroller also includes a front wheel bracket composed of a first rotating rod 2, a front wheel assembly 10 arranged on the front wheel bracket, and a base The rear wheel support made of bar 1 is arranged on the rear wheel assembly 11 of the rear wheel support, and the push handle 12 formed by the second rotating bar 3 . Of course, the front wheel support can also be formed by the second rotating rod 3, the rear wheel support can be formed by the base rod 1, and the push handle can be formed by the first rotating rod.

The above folding joints can also be applied in children's dining chairs, 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 may constitute the backrest rod of the seat mechanism .

Embodiment 2: Referring to the accompanying drawing 6, this embodiment is basically the same as the embodiment, the difference is that the first guide part 4 and the second guide part 5 are convex ribs respectively, and the two ends of the moving part 7 have respectively Grooves, each groove is slidably matched with the corresponding rib, and the moving part 7 is connected with the connecting rod 6 in rotation.

The above-mentioned embodiments are only to illustrate the technical concept and characteristics of the present utility model, and its purpose is to enable those familiar with this technology to understand the content of the present utility model and implement it accordingly, and not to limit the protection scope of the present utility model. All equivalent changes or modifications made according to the spirit of the utility model shall fall within the protection scope of the utility model.

Claims (8)

1. one kind has the folding joint of expanded position and folding position, comprise pedestal bar (1), the first dwang (2) that opposite base bar rotates and the second dwang (3), it is characterized in that: an end of described pedestal bar (1), two parts in one end of described first dwang (2) and three, the end parts of described second dwang (3) are rotationally connected, at least one in 3rd parts and two parts is rotationally connected, described the first dwang (2) is provided with the first guide part (4), described the second dwang (3) is provided with the second guide part (5), described folding joint also comprises the connecting rod (6) be rotatably connected on pedestal bar and the moving member (7) being arranged on described connecting rod (6) end, described moving member (7) respectively with described first guide part (4), described the second guide part (5) is slidingly fitted, described folding joint is in the process launched or fold, described moving member (7) moves relative to described first guide part (4) and described second guide part (5), described connecting rod (6) rotates relative to described pedestal bar (1), make described pedestal bar (1), rotation between described first dwang (2) and described second dwang (3) three parts.

2. folding joint according to claim 1, it is characterized in that: described pedestal bar (1) is relative to described first dwang (2) or the fulcrum of described second dwang (3), the fulcrum of described connecting rod (6) relative to described pedestal bar (1), the center-point of described moving member (7), and three forms leg-of-mutton three summits.

3. folding joint according to claim 1, it is characterized in that: one end of described first guide part (4) is gradually short to the distance gradual change between the other end and the center of turn of described first dwang (2), and described first guide part (4) is departed from the radial direction of the center of turn place of described the first dwang (2) circle, one end of described second guide part (5) is gradually short to the distance gradual change between the other end and the center of turn of described second dwang (3), and described second guide part (5) is departed from the radial direction of the center of turn place of described the second dwang (2) circle, under described folding joint is in expanded position, described moving member (7) lays respectively at one end of described the first guide part (4) and one end of described the second guide part (5), under described folding joint is in folding position, described moving member (7) lays respectively at the other end of described the first guide part (4) and the other end of described the second guide part (5).

4. folding joint according to claim 1, is characterized in that: described first guide part (4), described second guide part (5) are distinguished curved.

5. folding joint according to claim 1, is characterized in that: described first guide part (4), described second guide part (5) are respectively guide groove, and described moving member (7) is inserted in these two guide grooves.

6. folding joint according to claim 1, it is characterized in that: described first guide part (4), described second guide part (5) are respectively fin, the both ends of described moving member (7) have groove respectively, each described groove is slidingly fitted with corresponding fin respectively, and described moving member (7) rotates with described connecting rod (6) and is connected.

7. folding joint according to claim 1, is characterized in that: an end of described pedestal bar (1), an end of described the first dwang (2) are connected by the first rotating shaft (9) phase pivot with an end of described the second dwang (3).

8. one kind includes the children trolley of the described folding joint of any one of claim 1-7, it is characterized in that: described children trolley also comprises the front component (10) of the other end being arranged at described the first dwang (2), is arranged at the wheel assembly (11) of the other end of described pedestal bar (1), the other end of described the second dwang (3) is provided with pushing hands (12).