Frame capable of being freely switched into cart mode or trailer mode

Abstract

The utility model discloses a frame capable of being freely switched into a cart mode or a trailer mode, the lower end of a push rod assembly is connected with the upper end of a front foot rod, the lower portion of the push rod assembly is movably connected with the upper end of a rear foot rod, and an angle adjusting mechanism is arranged between the push rod assembly and the rear foot rod. The push rod assembly can be correspondingly switched between the cart using state and the trailer using state through the angle adjusting mechanism, the using requirement of a user for pushing or dragging the cart frame is met, the personalized adjusting function is achieved, switching use in different scenes is met, and product competitiveness is improved.

Description

Technical field

[0001] The utility model relates to the field of vehicle frames, in particular to a vehicle frame which can be freely switched into a pushcart mode or a trailer mode. [Background Technology]

[0002] Strollers have become an indispensable accessory for infants and young children. Currently available strollers typically consist of a lower support frame and a seat frame positioned above the lower support frame. A handle is located behind the lower support frame, allowing the user to operate the stroller. However, current strollers only have a push mode or a reversing mode, and are unable to switch to a trailer mode based on user needs. Consequently, they suffer from limited functionality, low practicality, and inconvenience.

[0003] For this reason, the present invention is studied and proposed in view of the above problems. [Utility Model Content]

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a frame that can be freely switched to a cart or trailer mode, wherein the lower end of the push rod assembly is connected to the upper end of the front leg rod, and the lower part of the push rod assembly is movably connected to the upper end of the rear leg rod, and an angle adjustment mechanism is provided between the push rod assembly and the rear leg rod. The angle adjustment mechanism can enable the push rod assembly to switch accordingly between a cart use state and a trailer use state, meeting the user's use needs of pushing or towing the frame, having personalized adjustment functions, meeting the switching use in different scenarios, and improving the competitiveness of the product.

[0005] In order to solve the above technical problems, the utility model provides a frame that can be freely switched into a push cart or a trailer mode, comprising:

[0006] Seat connecting frame 1, used for connecting the seat frame;

[0007] A front foot rod 2, the lower end of which is connected to a front wheel assembly, and the upper portion of which is directly or indirectly connected to the front portion of the seat connecting frame 1;

[0008] A rear foot rod 3, the lower end of which is connected to a rear wheel assembly, and the middle portion of which is directly or indirectly connected to the rear portion of the seat connecting frame 1;

[0009] A push rod assembly 4, wherein the lower end of the push rod assembly 4 is directly or indirectly rotatably connected to the upper end of the front leg rod 2, and the lower portion of the push rod assembly 4 is directly or indirectly movably connected to the upper end of the rear leg rod 3;

[0010] The angle adjustment mechanism 5 is located between the push rod assembly 4 and the rear leg rod 3 and is used to adjust the push rod assembly 4 so that the push rod assembly 4 can be switched between a pushing state and a towing state.

[0011] As described above, a frame that can be freely switched to a pushcart or trailer mode, the angle adjustment mechanism 5 is configured as follows: the push rod assembly 4 is flipped downward to switch to a towing use state, and the push rod assembly 4 is flipped upward to switch to a pushing use state, the push rod assembly 4 includes a push rod body 42 and an extension rod 41, the lower end of the extension rod 41 is connected to the upper end of the front leg rod 2, the lower end of the push rod body 42 is rotatably connected to the upper end of the extension rod 41, and the angle adjustment mechanism 5 is located between the lower part of the push rod body 42 and the rear leg rod 3.

[0012] As described above, a frame that can be freely switched to a push cart or trailer mode is provided between the extension rod 41 and the rear leg rod 3. The front of the frame connection seat 6 is connected to the extension rod 41, and the rear of the frame connection seat 6 is connected to the upper end of the rear leg rod 3. The angle adjustment mechanism 5 is located between the push rod body 42 and the frame connection seat 6 and is used to adjust the push rod body 42 so that the push rod body 42 can be switched between the pushing use state and the towing use state.

[0013] As described above, a frame that can be freely switched to a push cart or trailer mode, the angle adjustment mechanism 5 includes an adjustment slide 51 slidably provided on the push rod body 42 and an adjustment slide rod 52 slidably provided on the frame connecting seat 6, the upper end of the adjustment slide rod 52 is rotatably connected to the adjustment slide 51, and the adjustment slide rod 52 is provided with a pushing adjustment lock hole 521 and a towing adjustment lock hole 522 spaced apart upper and lower; the angle adjustment mechanism 5 also includes an angle adjustment lock pin 53 movably provided on the frame connecting seat 6 and used to lock and cooperate with the pushing adjustment lock hole 521 or the towing adjustment lock hole 522, and one end of the angle adjustment lock pin 53 is directly or indirectly connected to the angle adjustment operating member 54.

[0014] As described above, a frame that can be freely switched to a push cart or trailer mode is provided with an angle adjustment elastic member 55 between the angle adjustment lock pin 53 and the frame connecting seat 6 for keeping the angle adjustment lock pin 53 locked with the pushing adjustment lock hole 521 or the towing adjustment lock hole 522.

[0015] As described above, a frame that can be freely switched to a push cart or trailer mode, the adjustment slide bar 52 is a hollow structure and an anti-pinch sliding member 56 is slidably provided inside, the anti-pinch sliding member 56 is provided with a pushing anti-pinch hole 561 that can be aligned and connected with the pushing adjustment lock hole 521 and a towing anti-pinch hole 562 that can be aligned and connected with the towing adjustment lock hole 522, an anti-pinch elastic reset member 57 for driving the anti-pinch sliding member 56 to elastically reset is provided between the upper end of the anti-pinch sliding member 56 and the adjustment slide bar 52, and the lower end of the anti-pinch sliding member 56 extends out from the lower side of the adjustment slide bar 52 and is used to interfere with the corresponding part of the frame connecting seat 6 or the rear foot rod 3.

[0016] As described above, in a vehicle frame that can be freely switched to a pushcart or trailer mode, the vehicle frame connecting seat 6 is provided with a guide slide 61 for guiding the movement path of the adjustment slide rod 52 .

[0017] In the above-mentioned vehicle frame that can be freely switched to a pushcart mode or a trailer mode, the adjusting sliding member 51 is an adjusting sliding sleeve that is slidably mounted on the push rod body 42 .

[0018] As described above, in a vehicle frame that can be freely switched to a pushcart or trailer mode, an angle limiting mechanism 7 for limiting the flipping angle of the pushrod body 42 is provided between the lower end of the pushrod body 42 and the upper end of the extension rod 41 .

[0019] As described above, a frame that can be freely switched to a push cart or trailer mode, the angle limiting mechanism 7 includes a pushing blocking portion 71 and a towing blocking portion 72 provided at the lower end of the push rod body 42 or the upper end of the extension rod 41; the angle limiting mechanism 7 also includes an angle blocking member 73 correspondingly provided at the upper end of the extension rod 41 or the lower end of the push rod body 42 and used to block and cooperate with the pushing blocking portion 71 or the towing blocking portion 72.

[0020] Compared with the prior art, the present invention provides a frame that can be freely switched to a pushcart or trailer mode, which has the following advantages:

[0021] 1. The utility model can switch the push rod assembly between the cart use state and the trailer use state through the angle adjustment mechanism, which can meet the user's use needs of pushing or towing the frame. It has personalized adjustment function, meets the switching use in different scenarios, and improves the competitiveness of the product.

[0022] 2. In order to achieve the anti-pinch effect and ensure safe and reliable use, an anti-pinch sliding part is slidably provided in the adjustment slide rod.

[0023] 3. In order to ensure that the adjustment slide bar slides smoothly and stably along the set direction, a guide slide is provided on the frame connecting seat to guide the movement path of the adjustment slide bar.

[0024] 4. An angle limit mechanism is provided between the lower end of the push rod body and the upper end of the extension rod to limit the flipping angle of the push rod body, which is conducive to quickly and accurately switching to pushing or towing use, ensuring that the angle adjustment lock pin accurately cooperates with the pushing adjustment lock hole or the towing adjustment lock hole, and ensuring that the frame structure is stable and reliable.

Brief Description of the Drawings

[0025] The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings, wherein:

[0026] Figure 1 This is one of the three-dimensional schematic diagrams of the utility model when it is in the cart use state.

[0027] Figure 2 This is the second three-dimensional schematic diagram of the utility model in the state of being used as a cart.

[0028] Figure 3 It is a three-dimensional schematic diagram of the utility model in a trailer use state.

[0029] Figure 4 This is one of the exploded views of the angle adjustment mechanism in the present invention.

[0030] Figure 5 This is the second exploded view of the angle adjustment mechanism in the present invention. [Specific implementation method]

[0031] The following describes the embodiments of the present invention in detail with reference to the accompanying drawings.

[0032] like Figure 1-5 As shown, the utility model provides a frame that can be freely switched into a pushcart or trailer mode, comprising a seat connecting frame 1, a front leg rod 2, a rear leg rod 3, a push rod assembly 4 and an angle adjustment mechanism 5. The seat connecting frame 1 is used to connect the seat frame and is arranged horizontally along the front-to-back direction. The lower end of the front leg rod 2 is connected to the front wheel assembly, and the upper part of the front leg rod 2 is directly or indirectly connected to the front part of the seat connecting frame 1; the lower end of the rear leg rod 3 is connected to the rear wheel assembly, and the middle part of the rear leg rod 3 is directly or indirectly connected to the rear part of the seat connecting frame 1; the lower end of the push rod assembly 4 is directly or indirectly connected to the upper end of the front leg rod 2, and at least the upper part of the push rod assembly 4 is movable relative to the front leg rod 2, and the lower part of the push rod assembly 4 is directly or indirectly connected to the upper end of the rear leg rod 3; the angle adjustment mechanism 5 is located between the push rod assembly 4 and the rear leg rod 3 and is used to adjust the push rod assembly 4 so that the push rod assembly 4 can be switched between a pushing state and a towing state. The yoke 5 is locked and released when the user turns the vehicle to the push mode, and the yoke 5 is locked when the user turns the vehicle to the push mode.

[0033] Furthermore, in order to facilitate adjustment and comply with operating habits, the angle adjustment mechanism 5 is configured as follows: the push rod assembly 4 is flipped downward and switched to a towing use state, and the push rod assembly 4 is flipped upward and switched to a pushing use state. The push rod assembly 4 includes a push rod body 42 and an extension rod 41. The lower end of the extension rod 41 is connected to the upper end of the front foot rod 2, and the lower end of the push rod body 42 is rotatably connected to the upper end of the extension rod 41. The angle adjustment mechanism 5 is located between the lower part of the push rod body 42 and the rear foot rod 3.

[0034] like Figure 1-5 As shown, a frame connecting seat 6 is provided between the extension rod 41 and the rear foot rod 3, the front part of the frame connecting seat 6 is connected to the extension rod 41, and the rear part of the frame connecting seat 6 is connected to the upper end of the rear foot rod 3, and the angle adjustment mechanism 5 is located between the push rod body 42 and the frame connecting seat 6 and is used to adjust the push rod body 42 so that the push rod body 42 can be switched between the pushing use state and the towing use state.

[0035] like Figure 2 、 4 As shown in , 5, for the convenience of adjustment, the angle adjustment mechanism 5 includes an adjustment slide 51 slidably provided on the push rod body 42 and an adjustment slide rod 52 slidably provided on the frame connecting seat 6, the upper end of the adjustment slide rod 52 is rotatably connected to the adjustment slide 51, and the adjustment slide rod 52 is provided with a pushing adjustment lock hole 521 and a towing adjustment lock hole 522 spaced apart above and below; the angle adjustment mechanism 5 also includes an angle adjustment lock pin 53 movably provided on the frame connecting seat 6 and used to lock with the pushing adjustment lock hole 521 or the towing adjustment lock hole 522, one end of the angle adjustment lock pin 53 is directly or indirectly connected to an angle adjustment operating member 54, and an angle adjustment elastic member 55 is provided between the angle adjustment lock pin 53 and the frame connecting seat 6 for keeping the angle adjustment lock pin 53 locked with the pushing adjustment lock hole 521 or the towing adjustment lock hole 522. During the process of adjusting the push rod body 42 from the pushing use state to the towing use state, the angle adjustment locking pin 53 slides outward relative to the frame connecting seat 6 through the action of the angle adjustment operating member 54, so that the locking end of the angle adjustment locking pin 53 exits the pushing adjustment locking hole 521, and then the push rod body 42 is pressed down, so that the push rod body 42 flips downward around the rotation axis between the lower end of the push rod body 42 and the upper end of the extension rod 41 to the towing use state. At this time, the towing adjustment locking hole 522 is aligned with the locking end of the angle adjustment locking pin 53, and the force on the angle adjustment operating member 54 is cancelled. The angle adjustment locking pin 53 is elastically reset under the action of the angle adjustment elastic member 55 and inserted into the towing adjustment locking hole 522, thereby locking the push rod body relative to the frame connecting seat 6 in the towing use state.

[0036] like Figure 4 、 5As shown, the two angle adjustment mechanisms 5 on the left and right sides are independent mechanisms. When adjusting, only by operating the two angle adjustment mechanisms 5 on the left and right sides at the same time can the angle of the push rod body be adjusted, which can avoid misoperation, play a fool-proof role, and ensure safe and reliable use.

[0037] The two angle adjustment mechanisms 5 on the left and right sides may also be configured to be simultaneously linked by an angle adjustment unlocking component to improve the unlocking efficiency.

[0038] like Figure 4 、 5 As shown, in order to achieve the anti-pinch effect and ensure safe and reliable use, the adjusting slide bar 52 is a hollow structure and an anti-pinch sliding member 56 is slidably provided therein. The anti-pinch sliding member 56 is provided with a pushing anti-pinch hole 561 that can be aligned and connected with the pushing adjustment lock hole 521 and a towing anti-pinch hole 562 that can be aligned and connected with the towing adjustment lock hole 522. An anti-pinch elastic reset member 57 for driving the anti-pinch sliding member 56 to elastically reset is provided between the upper end of the anti-pinch sliding member 56 and the adjusting slide bar 52. The lower end of the anti-pinch sliding member 56 extends out from the lower side of the adjusting slide bar 52 and is used to interfere with the corresponding part of the frame connecting seat 6 or the rear foot rod 3. When the push rod body 42 is switched from the pushing use state to the towing use state, the push rod body 42 is pressed down, so that the adjusting slide bar 52 drives the anti-pinch sliding member 56 to slide downward relative to the frame connecting seat 6. When the anti-pinch sliding member 56 slides downward for a certain distance, the lower end of the anti-pinch sliding member 56 contacts the upper end of the rear foot rod 3 and restricts the anti-pinch sliding member 56 from continuing to slide downward. At this time, since the adjusting slide bar 52 continues to slide downward, the anti-pinch sliding member 56 slides upward relative to the adjusting slide bar 52 until the towing anti-pinch hole 562 is aligned and connected with the towing adjustment lock hole 522, and the pushing anti-pinch hole 561 is misaligned with the pushing adjustment lock hole 521.

[0039] When the push rod body 42 is switched from the towing use state to the pushing use state, the push rod body 42 is lifted up to make the adjustment slide bar 42 with the anti-pinch sliding member 56 slide upward relative to the frame connecting seat 6. When the anti-pinch sliding member 56 slides upward a certain distance, the lower end of the anti-pinch sliding member 56 is separated from the upper end of the rear foot rod 3. At this time, the anti-pinch sliding member 56 slides downward relative to the adjustment slide bar 52 under the elastic force of the anti-pinch elastic reset member 57 until the pushing anti-pinch hole 561 is aligned and connected with the pushing adjustment lock hole 521, and the towing anti-pinch hole 562 is misaligned with the towing adjustment lock hole 522.

[0040] like Figure 4 、 5 As shown, in order to ensure that the adjustment slide bar slides smoothly and stably along the set direction, the frame connecting seat 6 is provided with a guide sliding portion 61 for guiding the movement path of the adjustment slide bar 52.

[0041] like Figure 1-5As shown, the adjusting sliding member 51 is an adjusting sliding sleeve slidably mounted on the push rod body 42 , and the adjusting sliding sleeve can slide smoothly along the length direction of the push rod body 42 to ensure smooth adjustment.

[0042] like Figure 4 、 5 As shown, an angle limiting mechanism 7 is provided between the lower end of the push rod body 42 and the upper end of the extension rod 41, for limiting the tilting angle of the push rod body 42. The angle limiting mechanism 7 includes a push blocking portion 71 and a drag blocking portion 72, which are provided at the lower end of the push rod body 42 or the upper end of the extension rod 41. The angle limiting mechanism 7 also includes an angle blocking member 73, which is provided at the upper end of the extension rod 41 or the lower end of the push rod body 42 and is configured to block and cooperate with the push blocking portion 71 or the drag blocking portion 72. When the angle blocking member blocks and cooperates with the push blocking portion, the push rod body 42 is in a push mode; when the angle blocking member blocks and cooperates with the drag blocking portion, the push rod body 42 is in a drag mode. This ensures the stability and reliability of the frame structure in both the push and drag modes, and also ensures that the angle adjustment lock pin accurately engages with the push adjustment lock hole or the drag adjustment lock hole.

Claims

1. A frame that can be freely switched to a pushcart or trailer mode, characterized in that include: A seat connecting frame (1) for connecting the seat frame; A front foot rod (2), the lower end of the front foot rod (2) is connected to the front wheel assembly, and the upper part of the front foot rod (2) is directly or indirectly connected to the front part of the seat connecting frame (1); A rear foot rod (3), the lower end of the rear foot rod (3) is connected to a rear wheel assembly, and the middle portion of the rear foot rod (3) is directly or indirectly connected to the rear portion of the seat connecting frame (1); A push rod assembly (4), wherein the lower end of the push rod assembly (4) is directly or indirectly connected to the upper end of the front foot rod (2), and the lower part of the push rod assembly (4) is directly or indirectly movably connected to the upper end of the rear foot rod (3); An angle adjustment mechanism (5) is located between the push rod assembly (4) and the rear foot rod (3) and is used to adjust the push rod assembly (4) so ​​that the push rod assembly (4) can be switched between a pushing state and a towing state.

2. A frame that can be freely switched to a pushcart or trailer mode according to claim 1, characterized in that The angle adjustment mechanism (5) is configured as follows: the push rod assembly (4) is flipped downward to switch to a towing state, and the push rod assembly (4) is flipped upward to switch to a pushing state. The push rod assembly (4) includes a push rod body (42) and an extension rod (41). The lower end of the extension rod (41) is connected to the upper end of the front foot rod (2). The lower end of the push rod body (42) is rotatably connected to the upper end of the extension rod (41). The angle adjustment mechanism (5) is located between the lower part of the push rod body (42) and the rear foot rod (3).

3. A frame that can be freely switched to a pushcart or trailer mode according to claim 2, characterized in that A frame connecting seat (6) is provided between the extension rod (41) and the rear foot rod (3); the front portion of the frame connecting seat (6) is connected to the extension rod (41); the rear portion of the frame connecting seat (6) is connected to the upper end of the rear foot rod (3); and the angle adjustment mechanism (5) is located between the push rod body (42) and the frame connecting seat (6) and is used to adjust the push rod body (42) so that the push rod body (42) can be switched between a pushing state and a towing state.

4. A frame that can be freely switched to a pushcart or trailer mode according to claim 3, characterized in that The angle adjustment mechanism (5) comprises an adjustment slide (51) slidably arranged on the push rod body (42) and an adjustment slide bar (52) slidably arranged on the frame connection seat (6); the upper end of the adjustment slide bar (52) is rotatably connected to the adjustment slide (51); the adjustment slide bar (52) is provided with a push adjustment lock hole (521) and a towing adjustment lock hole (522) spaced apart from each other; the angle adjustment mechanism (5) further comprises an angle adjustment lock pin (53) movably arranged on the frame connection seat (6) and used for locking with the push adjustment lock hole (521) or the towing adjustment lock hole (522); one end of the angle adjustment lock pin (53) is directly or indirectly connected to an angle adjustment operating member (54).

5. A frame that can be freely switched to a pushcart or trailer mode according to claim 4, characterized in that An angle adjustment elastic member (55) is provided between the angle adjustment lock pin (53) and the vehicle frame connecting seat (6) for keeping the angle adjustment lock pin (53) locked with the pushing adjustment lock hole (521) or the dragging adjustment lock hole (522).

6. A frame that can be freely switched to a pushcart or trailer mode according to claim 4, characterized in that The adjusting slide bar (52) is hollow in structure and is slidably provided with an anti-pinch sliding member (56) therein. The anti-pinch sliding member (56) is provided with a pushing anti-pinch hole (561) that can be aligned and connected with the pushing adjustment lock hole (521) and a towing anti-pinch hole (562) that can be aligned and connected with the towing adjustment lock hole (522). An anti-pinch elastic reset member (57) for driving the anti-pinch sliding member (56) to elastically reset is provided between the upper end of the anti-pinch sliding member (56) and the adjusting slide bar (52). The lower end of the anti-pinch sliding member (56) extends from the lower side of the adjusting slide bar (52) and is used to contact and cooperate with the corresponding part of the frame connecting seat (6) or the rear foot rod (3).

7. A frame that can be freely switched to a pushcart or trailer mode according to claim 4, characterized in that The frame connecting seat (6) is provided with a guide slide portion (61) for guiding the movement path of the adjustment slide rod (52).

8. A frame that can be freely switched to a pushcart or trailer mode according to claim 4, characterized in that The adjusting sliding member (51) is an adjusting sliding sleeve slidably sleeved on the push rod body (42).

9. A frame that can be freely switched to a pushcart or trailer mode according to any one of claims 2 to 8, characterized in that An angle limiting mechanism (7) for limiting the flipping angle of the push rod body (42) is provided between the lower end of the push rod body (42) and the upper end of the extension rod (41).

10. A frame that can be freely switched to a pushcart or trailer mode according to claim 9, characterized in that The angle limiting mechanism (7) comprises a pushing blocking portion (71) and a dragging blocking portion (72) provided at the lower end of the push rod body (42) or the upper end of the extension rod (41); the angle limiting mechanism (7) further comprises an angle blocking member (73) provided at the upper end of the extension rod (41) or the lower end of the push rod body (42) and used for blocking and cooperating with the pushing blocking portion (71) or the dragging blocking portion (72).

Images