Quick folding and unlocking mechanism for baby carriage frame

Abstract

The utility model discloses a baby carriage frame quick folding unlocking mechanism which comprises a seat plate, side supporting rods are arranged on the two sides of the seat plate respectively, the middle of each side supporting rod is fixedly connected with a joint block, each joint block is rotationally connected with one end of a transmission flat piece, a pull pin unlocking mechanism is arranged on the seat plate, and the pull pin unlocking mechanism is used for unlocking or locking the transmission flat piece. When the baby carriage frame is used, an operator can conveniently operate the pull pin unlocking mechanism on the seat plate with one hand, so that the rotating connecting end between the transmission flat piece and the joint block is unlocked, the unlocked transmission flat piece can rotate along the joint block, the baby carriage frame is integrally folded in a linkage mode, and operation is convenient; on the contrary, when the baby carriage frame is in an unfolded state, the pull pin unlocking mechanism locks the rotary connecting end between the transmission flat sheet and the joint block so as to ensure that the baby carriage frame is unfolded stably; the device is easy and convenient to operate, stable in structure and long in service life.

Description

Technical Field

[0001] This utility model relates to the technical field of stroller frame unlocking structure, specifically to a stroller frame quick-folding unlocking mechanism. Background Technology

[0002] A stroller frame consists of a front wheel frame and a rear wheel frame. The stroller frame can be unfolded or folded by rotating the front wheel frame and the rear wheel frame relative to the joint pivot position.

[0003] However, existing stroller frames have the following defects during the folding process: the folding linkage mechanism needs to be unlocked in advance when folding. Due to the unreasonable structure and design deficiencies between the folding linkage mechanism and the unlocking mechanism, there are technical problems such as inconvenience in unlocking and folding operations, difficulty in operation, and insufficient structural stability during the folding and unlocking process. Utility Model Content

[0004] The purpose of this invention is to provide a quick-folding and unlocking mechanism for a stroller frame to solve the problems mentioned in the background art.

[0005] The objective of this utility model can be achieved through the following technical solutions:

[0006] A quick-folding and unlocking mechanism for a stroller frame includes a seat plate, side support rods on both sides of the seat plate, a joint block fixedly connected to the middle of the side support rods, one end of a transmission flat plate rotatably connected to the joint block, and a pull-pin unlocking mechanism on the seat plate for unlocking or locking the transmission flat plate.

[0007] As a further embodiment of this utility model: the unlocking mechanism includes an unlocking flap rotatably connected to the upper surface of the seat plate, and the unlocking flap has an integrally structured diagonal pull rod on both sides. The diagonal pull rod passes through the seat plate and is connected to the pin rod. The pin rod is inserted and connected to the joint block, and the tail end of the pin rod is used to unlock or lock the transmission flat plate.

[0008] As a further embodiment of this utility model: a limiting plate is provided below the unlocking flap, and the two ends of the unlocking flap and the limiting plate are respectively connected by diagonal connecting rods, and the limiting plate is located below the seat plate.

[0009] As a further embodiment of this utility model: when the tail end of the pin is used to unlock the transmission plate, the diagonal pull rod drives the pin to disengage from the pin hole two on the transmission plate.

[0010] As a further embodiment of this utility model: the transmission flat plate has a pin hole and is rotatably connected to the joint block through a pin, and the end of the transmission flat plate away from the joint block is connected to the rear wheel frame.

[0011] As a further embodiment of this utility model, universal wheels are provided at the bottom ends of both sides of the rear wheel frame.

[0012] As a further embodiment of this utility model: the joint block is inserted into one end of the connecting rod, and a sliding hole is provided on the side wall of the connecting rod, in which the L-shaped pin rod is slidably connected.

[0013] As a further embodiment of this utility model: when the tail end of the pin rod is used to lock the transmission flat plate, the end of the connecting rod is provided with a return spring, and the return spring drives the pin rod to insert into the locking pin hole two.

[0014] As a further embodiment of this utility model, one end of the side support rod is rotatably connected to the front wheel frame.

[0015] As a further embodiment of this utility model, universal wheels are provided at the bottom ends of both sides of the front wheel frame.

[0016] The beneficial effects of this utility model are:

[0017] (1) During the use of the stroller frame quick folding unlocking mechanism of this application, the stroller frame is in the unfolded state. At this time, the seat plate is in the horizontal state, and the side support rod and the transmission flat plate are horizontally aligned. The operator can easily operate the pull pin unlocking mechanism on the seat plate with one hand to unlock the rotating connection end between the transmission flat plate and the joint block. After unlocking, the transmission flat plate can rotate along the joint block so that the stroller frame can be folded in a coordinated manner. The operation is convenient.

[0018] (2) When the stroller frame is unfolded, the pull pin unlocking mechanism locks the rotating connection end between the transmission flat plate and the joint block to ensure that the stroller frame is unfolded stably. This application is simple and convenient to operate, has a stable structure, and a long service life. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the stroller frame seat panel removal according to this utility model;

[0022] Figure 3 This is a schematic diagram of the side support rods provided on both sides of the seat panel of this utility model;

[0023] Figure 4 yes Figure 3 A schematic diagram showing the connection between the pull pin unlocking mechanism and the joint block;

[0024] Figure 5 yes Figure 4 A schematic diagram of the locking connection between the pin and the transmission flat plate;

[0025] Figure 6 yes Figure 5 A schematic diagram showing the connection between the pin and the return spring.

[0026] In the diagram: 1. Seat panel; 2. Side support rod; 3. Joint block; 4. Transmission flat plate; 40. Pin hole one; 41. Pin hole two; 5. Pull pin unlocking mechanism; 50. Unlocking flap; 51. Diagonal tie rod; 52. Insert pin rod; 53. Limiting plate; 6. Connecting rod; 60. Sliding hole; 61. Return spring; 7. Front wheel bracket; 8. Rear wheel bracket. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0028] In the description of this utility model, it should be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model; in the description of this utility model, "a plurality of" or "several" means at least two, such as two, three, etc., unless otherwise explicitly and specifically defined.

[0029] Please see Figures 1 to 3 As shown, this utility model is a quick-folding and unlocking mechanism for a stroller frame, including a seat plate 1, side support rods 2 on both sides of the seat plate 1, a joint block 3 fixedly connected to the middle of the side support rods 2, a joint block 3 rotatably connected to one end of a transmission flat plate 4, and a pull pin unlocking mechanism 5 on the seat plate 1, which is used to unlock or lock the transmission flat plate 4.

[0030] During use, if the quick-folding and unlocking mechanism of the stroller frame in this application is used, Figure 1As shown, the stroller frame is in the unfolded state. At this time, the seat panel 1 is horizontal, and the side support rod 2 and the transmission flat plate 4 are horizontally aligned. The operator can easily operate the pull-pin unlocking mechanism 5 on the seat panel 1 with one hand to unlock the rotating connection between the transmission flat plate 4 and the joint block 3. After unlocking, the transmission flat plate 4 can rotate along the joint block 3, allowing the stroller frame to fold as a whole, making operation convenient. Conversely, when the stroller frame is unfolded... Figure 1 When the stroller is in the unfolded state, the pull pin unlocking mechanism 5 locks the rotating connection between the transmission flat plate 4 and the joint block 3 to ensure that the stroller frame is unfolded stably.

[0031] In this specific implementation, such as Figure 4 As shown, the pull-pin unlocking mechanism 5 includes an unlocking flap 50 rotatably connected to the upper surface of the seat plate 1. The unlocking flap 50 has integrated diagonal pull rods 51 on both sides. The diagonal pull rods 51 pass through the seat plate 1 and are connected to a pin 52. The pin 52 is inserted into and connected to the joint block 3. The tail end of the pin 52 is used to unlock or lock the transmission plate 4. When the stroller frame is folded, the unlocking flap 50 can be rotated a certain angle along the seat plate 1. The unlocking flap 50 pulls the pin 52 via the diagonal pull rods 51 to unlock the transmission plate 4. Conversely, when the stroller frame is unfolded, the unlocking flap 50 does not exert force on the pin 52 via the diagonal pull rods 51, so that the pin 52 can lock the transmission plate 4.

[0032] In this specific implementation, such as Figure 4 As shown, a limiting plate 53 is provided below the unlocking flap 50. The two ends of the unlocking flap 50 and the limiting plate 53 are connected by diagonal connecting rods 6, and the limiting plate 53 is located below the seat plate 1. When the unlocking flap 50 rotates a certain angle along the seat plate 1, the limiting plate 53 is used to limit the rotation angle of the unlocking flap 50. When the operator releases the unlocking flap 50, the unlocking flap 50 can be reset under the gravity of the limiting plate 53, so that the stroller frame can be folded and unlocked by the unlocking flap 50 next time.

[0033] In this specific implementation, such as Figure 5As shown, when the tail end of the pin rod 52 is used to unlock the transmission plate 4, the diagonal pull rod 51 drives the pin rod 52 to disengage from the second pin hole 41 on the transmission plate 4. The first pin hole 40 on the transmission plate 4 is rotatably connected to the joint block 3 through a pin. The end of the transmission plate 4 away from the joint block 3 is connected to the rear wheel frame 8. The bottom ends of both sides of the rear wheel frame 8 are respectively provided with casters. One end of the connecting rod 6 is inserted into the joint block 3. A sliding hole 60 is opened on the side wall of the connecting rod 6, and an L-shaped pin is slidably connected in the sliding hole 60. One end of the rod 52 and the side support rod 2 are rotatably connected to the front wheel frame 7. The bottom of both sides of the front wheel frame 7 are equipped with universal wheels. When the stroller frame is folded and unlocked, the diagonal pull rod 51 can drive the pin rod 52 to slide along the sliding hole 60 on the connecting rod 6 until the pin rod 52 disengages from the second pin hole 41. At this time, the transmission flat plate 4 is only rotatably connected to the joint block 3 at the first pin hole 40 position, so that the transmission flat plate 4 can rotate along the joint block 3 after unlocking, so that the stroller frame can be folded as a whole, which is convenient to operate.

[0034] In this specific implementation, such as Figure 6 As shown, when the tail end of the pin 52 is used to lock the transmission plate 4, the end of the connecting rod 6 is provided with a return spring 61. The return spring 61 drives the pin 52 to be inserted into the second locking pin hole 41. When the stroller frame is unfolded, the end of the connecting rod 6 can be connected to the pin 52 by the return spring 61. Under the elastic force of the return spring 61, the pin 52 is always inserted into the second pin hole 41 on the transmission plate 4. At this time, the first pin hole 40 and the second pin hole 41 on the transmission plate 4 are both inserted into the connection so that the transmission plate 4 can no longer rotate along the joint block 3, thereby ensuring the stability of the stroller frame when unfolded.

[0035] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A quick fold unlock mechanism for a stroller frame, comprising: The utility model provides a kind of seat, including seat plate (1), the two sides of the seat plate (1) are respectively provided with side support rod (2), the middle part of the side support rod (2) is fixedly connected joint block (3), one end of the joint block (3) is rotatably connected transmission flat piece (4), the seat plate (1) is provided with draw pin unlocking mechanism (5), and the draw pin unlocking mechanism (5) is used to unlock or lock the transmission flat piece (4).

2. A quick fold unlock mechanism for a stroller frame as defined in claim 1, wherein, The unlocking flap (50) rotatably connected on the upper plate surface of the seat plate (1) is included in the draw pin unlocking mechanism (5), the two sides of the unlocking flap (50) are provided with an integrated inclined pull rod (51), the inclined pull rod (51) penetrates the seat plate (1) and is connected with the latch bar (52), the latch bar (52) is connected with the joint block (3), and the tail end of the latch bar (52) is used to unlock or lock the transmission flat piece (4).

3. A quick fold unlock mechanism for a stroller frame as defined in claim 2, wherein, The lower side of the unlocking flap (50) is provided with a limiting plate (53), the unlocking flap (50) and the two ends of the limiting plate (53) are respectively connected by an inclined connecting rod (6), and the limiting plate (53) is arranged below the seat plate (1).

4. A quick fold unlocking mechanism for a stroller frame as defined in claim 2, wherein, When the tail end of the latch bar (52) is used to unlock the transmission flat piece (4), the inclined pull rod (51) drives the latch bar (52) to separate from the pin shaft hole two (41) on the transmission flat piece (4).

5. A quick fold unlock mechanism for a stroller frame as defined in claim 4, wherein, The pin shaft hole one (40) opened on the transmission flat piece (4) is rotatably connected with the joint block (3) by a pin shaft, and one end of the transmission flat piece (4) away from the joint block (3) is connected with a rear wheel frame (8).

6. A quick fold unlock mechanism for a stroller frame as defined in claim 5, wherein, The two bottom ends of the rear wheel frame (8) are respectively provided with universal wheels.

7. A quick fold unlocking mechanism for a stroller frame as defined in claim 4, wherein, The joint block (3) is inserted and connected with one end of the connecting rod (6), the side wall of the connecting rod (6) is provided with a sliding hole (60), and the L-shaped latch bar (52) is slidably connected in the sliding hole (60).

8. A quick fold unlock mechanism for a stroller frame according to claim 7, wherein, When the tail end of the latch bar (52) is used to lock the transmission flat piece (4), the end of the connecting rod (6) is provided with a return spring (61), and the latch bar (52) is inserted and locked in the pin shaft hole two (41) by the return spring (61).

9. A quick fold unlocking mechanism for a stroller frame as defined in claim 1, wherein, One end of the side support rod (2) is rotatably connected with a front wheel frame (7).

10. A quick fold unlock mechanism for a stroller frame as defined in claim 9, wherein, The two bottom ends of the front wheel frame (7) are respectively provided with universal wheels.

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