Lifting folding type trolley

Abstract

The utility model discloses a lifting folding type trolley which comprises a trolley frame with an unfolded state and a folded state, front wheels arranged below the two sides of the front portion of the trolley frame and rear wheels arranged below the two sides of the rear portion of the trolley frame. The stroller frame comprises a front support connected with front wheels, a rear support connected with rear wheels and a push rod support connected with the top of the rear support, the frame support, the front support and the rear support are folded and stored in the front-back direction through cooperation of connecting rods and hinge structures, and the frame support and the front support are linked through a first connecting rod. In the folding process, folding can be completed by lifting the frame body support upwards and folding the frame body support towards the rear support, the front support is synchronously folded towards the rear support under the linkage effect of the first connecting rod, and a user can make the trolley achieve the synchronous unfolding or folding action of the front support and the frame body support through simple operation. And the steps of folding and unfolding the trolley are simplified.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a pull-up folding handcart. Background Technology

[0002] A trolley is a walking aid medical device for people with mobility impairments, falling between a walker and a wheelchair. Lightweight, stable, and easy to store are fundamental characteristics of this type of product. Most trolleys currently have folding storage capabilities. For example, a folding walker disclosed in CN201692255U on January 5, 2011, features a foldable and detachable frame consisting of an inverted "T"-shaped frame base, a telescopic rod, front casters, and rear caster support arms. It also includes a hook between the frame and an "X"-shaped support frame, concealed brake cables, and storage bags and shelves. This existing technology utilizes the X-shaped support frame to achieve left-right folding and the foldable T-shaped frame base to achieve front-back folding of the casters, resulting in a trolley with minimal space occupation and maximized folding efficiency when folded, meeting the basic requirements of a qualified trolley.

[0003] However, the aforementioned existing technology still has some areas for improvement. The issues that need improvement are that the front and rear casters can only be folded away by releasing the locking mechanism, which increases the difficulty of operation for users. At the same time, the "X" support frame means that it can only be folded left and right for storage, and users need to use both hands to close it when storing it. In other words, for people with mobility impairments, the folding structure of the aforementioned walking aid still has some inconveniences in operation, and the integrity of the vehicle body structure needs to be improved. Utility Model Content

[0004] To address the technical deficiencies in the background technology, this utility model proposes a pull-out folding handcart, which solves the aforementioned technical problems and meets practical needs. The specific technical solution is as follows:

[0005] A pull-out folding handcart includes a cart frame having an unfolded and folded state, front wheels located on both sides below the front of the cart frame, and rear wheels located on both sides below the rear of the cart frame. The cart frame includes a front bracket connecting the front wheels, a rear bracket connecting the rear wheels, and a push rod bracket connected to the top of the rear bracket.

[0006] The front of the trolley frame is provided with a frame support that can be unfolded and folded. The lower front side of the frame support overlaps the front support. Connecting rods are provided on both sides of the frame support and the front support.

[0007] The top of the rear support is provided with an armrest support that can be unfolded and folded, and a foldable connecting rod structure is provided between the armrest support and the rear support.

[0008] As an improvement to the above solution, the rear bracket has an arc-shaped section that bends towards the front, and the rear part of the front bracket is provided with a first mounting base that matches the shape of the arc-shaped section of the rear bracket. The rear part of the front bracket is hinged to the first mounting base, and the rear bracket is fixed to the first mounting base.

[0009] As an improvement to the above solution, the frame support includes an upper frame support, a lower frame support, and a frame support frame. The rear end of the upper frame support is hinged to the upper part of the rear support, the rear end of the lower frame support is hinged to the lower part of the rear support, and the front end of the lower frame support overlaps the front support. There are two frame support frames, which are arranged on both sides of the upper frame support and the lower frame support. The two ends of the frame support are respectively hinged to the upper frame support and the lower frame support.

[0010] As an improvement to the above solution, there are two connecting rods, which are respectively set on both sides of the lower frame bracket. One end of the connecting rod is hinged to the lower frame bracket, and the other end is hinged to the front bracket.

[0011] As an improvement to the above solution, a second mounting base is provided at the position where the handrail bracket connects to the rear bracket. The second mounting base is fixed to the rear bracket by a screw-locking structure. One end of the connecting rod structure is hinged to the handrail bracket, and the other end is hinged to the second mounting base.

[0012] As an improvement to the above solution, the linkage structure includes a second connecting rod and a third connecting rod. One end of the third connecting rod is hinged to the second mounting base, and the other end is hinged to the second connecting rod. The other end of the second connecting rod is hinged to the bottom of the handrail bracket.

[0013] As an improvement to the above solution, the bottom of the handrail bracket is provided with a slot whose length is adapted to the length of the second connecting rod. One end of the second connecting rod is hinged to the front of the slot, and the other end is hinged to the third connecting rod.

[0014] As an improvement to the above solution, a transverse support is provided between the two rear supports, a horizontal plate is provided on the transverse support, and a seat plate is provided on the top of the frame support.

[0015] The beneficial effects of this utility model are as follows: the frame support, front support, and rear support are folded and stored in the front and rear directions through the cooperation of connecting rods and hinge structures. The frame support and the front support are linked together by the connecting rod. When folding, the frame support can be lifted upward and closed towards the rear support. The front support closes towards the rear support synchronously under the linkage of the connecting rod. This allows the user to easily make the trolley's front support and frame support unfold or fold synchronously, simplifying the steps of trolley storage and unfolding. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the trolley frame structure of this utility model. Figure 1 .

[0017] Figure 2 This is a schematic diagram of the trolley frame structure of this utility model. Figure 2 .

[0018] Figure 3 This is a schematic diagram of the trolley frame structure of this utility model. Figure 3 .

[0019] Figure 4 This is a schematic diagram of the handrail support of this utility model in its unfolded state.

[0020] Figure 5 This is a schematic diagram of the trolley frame of this utility model in its folded state.

[0021] Figure 6 This is a schematic diagram of the handrail support of this utility model in its retracted state.

[0022] The components include: 1. Cart frame; 101. Front wheel; 102. Rear wheel; 2. Front bracket; 201. First mounting base; 3. Rear bracket; 301. Push rod bracket; 4. Frame bracket; 401. Upper frame bracket; 402. Lower frame bracket; 403. Frame support frame; 404. Connecting rod one; 5. Handrail bracket; 501. Second mounting base; 502. Groove; 6. Linkage structure; 601. Connecting rod two; 602. Connecting rod three; 7. Horizontal bracket; 8. Horizontal plate; 9. Seat plate. Detailed Implementation

[0023] The embodiments of this utility model will be described below with reference to the accompanying drawings and related examples. The embodiments of this utility model are not limited to the following examples, and this utility model relates to relevant necessary components in this technical field, which should be regarded as well-known technology in this technical field and can be known and mastered by those skilled in this technical field.

[0024] This utility model discloses a pull-out folding handcart, including a cart frame 1 having an unfolded and folded state, front wheels 101 located on the lower sides of the front part of the cart frame 1, and rear wheels 102 located on the lower sides of the rear part of the cart frame 1. The cart frame 1 includes a front bracket 2 connecting the front wheels 101, a rear bracket 3 connecting the rear wheels 102, and a push rod bracket 301 connected to the top of the rear bracket 3.

[0025] In the structure of the trolley frame 1, the front of the trolley frame 1 is provided with a frame support 4 that can be unfolded and folded. The lower front part of the frame support 4 is attached to the front support 2. The two sides of the frame support 4 are connected to the front support 2 with connecting rods 404. The rear part of the frame support 4 is hinged to the rear support 3. When folding, the front part of the frame support 4 is lifted and closed towards the rear support 3. The connecting rods 404 are linked to the front support 2 and simultaneously close towards the rear support 3, simplifying the steps of unfolding and storing the trolley.

[0026] Furthermore, in the above-mentioned scheme, the top of the rear support 3 is provided with a handrail support 5 that can be unfolded and folded. A foldable connecting rod structure 6 is provided between the handrail support 5 and the rear support 3. The handrail support 5 unfolds towards the front of the trolley. When folded, the handrail support 5 rotates downward and fits against the rear support 3. The connecting rod structure 6 is embedded in the handrail support 5 after it is unfolded, and provides support for the handrail support 5.

[0027] In the technical solution of the rear support 3 of this utility model, the rear support 3 has an arc-shaped segment that bends towards the front, the top of the rear support 3 is connected to the armrest support 5, the bottom of the rear support 3 is connected to the rear wheel 102, and the position of the rear support 3 corresponding to the arc-shaped segment is connected to the front support 2.

[0028] Furthermore, the rear part of the front bracket 2 is provided with a first mounting base 201 that is adapted to the arc-shaped section of the rear bracket 3. The rear part of the front bracket 2 is hinged to the first mounting base 201. The cross-section of the first mounting base 201 is U-shaped and covers the rear bracket 3 along the arc-shaped section of the rear bracket 3. At least two fixing screws are provided between the rear bracket 3 and the first mounting base 201 for screwing and fixing.

[0029] In the technical solution of the frame bracket 4 of this utility model, the frame bracket 4 includes an upper frame bracket 401, a lower frame bracket 402 and a frame support frame 403. The rear end of the upper frame bracket 401 is hinged to the upper part of the rear bracket 3, the rear end of the lower frame bracket 402 is hinged to the lower part of the rear bracket 3, and the front end of the lower frame bracket 402 overlaps the front bracket 2. There are two frame support frames 403, which are arranged on both sides of the upper frame bracket 401 and the lower frame bracket 402. The two ends of the frame bracket 4 are respectively hinged to the upper frame bracket 401 and the lower frame bracket 402.

[0030] It should be noted that when folding and storing, the user holds the front of the upper frame bracket 401 and lifts the upper frame bracket 401 upwards, folding it toward the rear bracket 3. The frame support frame 403 drives the lower frame bracket 402 to fold toward the rear bracket 3 simultaneously.

[0031] Furthermore, in the above solution, the frame support 4 is provided with a storage box, which is snapped between the upper frame support 401 and the lower frame support 402. When folding and storing, the storage box can be taken out from the rear of the frame support 4 to fold and store the trolley frame 1.

[0032] Furthermore, in the above scheme, there are two connecting rods 404, which are respectively arranged on both sides of the lower frame bracket 402. One end of the connecting rod 404 is hinged to the lower frame bracket 402, and the other end is hinged to the front bracket 2.

[0033] It should be noted that after the connecting rod 404 connects the front support 2 and the lower frame support 402, in the unfolded state, the front part of the lower frame support 402 overlaps the front part of the front support 2. One end of the connecting rod 404 is connected to the middle of the front support 2, and the other end is connected to the rear of the lower frame support 402, thus forming a relatively stable triangular support structure. In the folded state, the front part of the lower frame support 402 separates from the front part of the front support 2. The front support 2 falls downward under its own weight. At the same time as the lower frame support 402 approaches the rear support 3, the connecting rod 404 pulls the front support 2 towards the lower part of the rear support 3.

[0034] Furthermore, in the above scheme, a second mounting base 501 is provided at the position where the handrail bracket 5 is connected to the rear bracket 3. The second mounting base 501 is fixed to the rear bracket 3 by a screw-locking structure. One end of the connecting rod structure 6 is hinged to the handrail bracket 5, and the other end is hinged to the second mounting base 501.

[0035] Furthermore, in the above scheme, the connecting rod structure 6 includes connecting rod two 601 and connecting rod three 602. One end of connecting rod three 602 is hinged to the second mounting base 501, and the other end is hinged to connecting rod two. The other end of connecting rod two 601 is hinged to the bottom of the handrail bracket 5.

[0036] Furthermore, in the above scheme, the bottom of the handrail bracket 5 is provided with a slot 502 whose length is adapted to the length of the connecting rod 601. One end of the connecting rod 601 is hinged to the front of the slot 502, and the other end is hinged to the connecting rod 602.

[0037] It should be noted that the armrest bracket 5 is fixed to the rear bracket 3 by the second mounting base 501. In the unfolded state, the armrest bracket 5 extends towards the front of the trolley frame 1. The bottom of the armrest bracket 5 is supported by the connecting rod structure 6. The second connecting rod 601 is embedded in the groove 502 at the bottom of the armrest bracket 5, and the end of the third connecting rod 602 abuts against the groove 502 of the armrest bracket 5, forming a triangular support structure with the rear bracket 3. When the armrest bracket 5 is changed from the unfolded state to the folded state, the armrest bracket 5 is folded upwards. Lift the armrest bracket 5 and manually move the connecting rod 602 outwards, causing the connecting rod 601 to disengage from the slot 502. The connecting rod structure 6 then loses its supporting function for the armrest bracket 5. After losing the supporting function of the connecting rod structure 6, the armrest bracket 5 can be manually folded onto the rear bracket 3 by pressing it down. Similarly, when the armrest bracket 5 is changed from the folded state to the unfolded state, the armrest bracket 5 is manually unfolded, and the connecting rod 602 is manually moved, causing the connecting rod 601 to engage with the slot 502, thereby fixing the armrest bracket 5.

[0038] Furthermore, in the above scheme, a transverse support 7 is provided between the two rear supports 3, a horizontal plate 8 is provided on the transverse support 7, and a seat plate 9 is provided on the top of the frame support 4.

[0039] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A pull-out folding handcart, characterized in that, The trolley frame (1) has an unfolded and folded state, front wheels (101) located on the lower front sides of the trolley frame (1), and rear wheels (102) located on the lower rear sides of the trolley frame (1). The trolley frame (1) includes a front bracket (2) connecting the front wheels (101), a rear bracket (3) connecting the rear wheels (102), and a push rod bracket (301) connected to the top of the rear bracket (3). The front of the trolley frame (1) is provided with a frame support (4) that can be unfolded and folded. The lower front side of the frame support (4) is attached to the front support (2). The two sides of the frame support (4) are connected to the front support (2) by connecting rods (404). The top of the rear support (3) is provided with a handrail support (5) that can be unfolded and folded, and a foldable connecting rod structure (6) is provided between the handrail support (5) and the rear support (3).

2. The pull-out folding handcart according to claim 1, characterized in that, The rear bracket (3) has an arc-shaped section that bends towards the front. The rear part of the front bracket (2) is provided with a first mounting base (201) that is adapted to the shape of the arc-shaped section of the rear bracket (3). The rear part of the front bracket (2) is hinged to the first mounting base (201), and the rear bracket (3) is fixed to the first mounting base (201).

3. The pull-out folding handcart according to claim 1, characterized in that, The frame support (4) includes an upper frame support (401), a lower frame support (402), and a frame support frame (403). The rear end of the upper frame support (401) is hinged to the upper part of the rear support (3), the rear end of the lower frame support (402) is hinged to the lower part of the rear support (3), and the front end of the lower frame support (402) overlaps the front support (2). There are two frame support frames (403), which are arranged on both sides of the upper frame support (401) and the lower frame support (402). The two ends of the frame support (4) are respectively hinged to the upper frame support (401) and the lower frame support (402).

4. The pull-out folding handcart according to claim 3, characterized in that, There are two connecting rods (404), which are respectively set on both sides of the lower frame bracket (402). One end of the connecting rod (404) is hinged to the lower frame bracket (402), and the other end is hinged to the front bracket (2).

5. The pull-out folding handcart according to claim 1, characterized in that, A second mounting base (501) is provided at the position where the handrail bracket (5) is connected to the rear bracket (3). The second mounting base (501) is fixed to the rear bracket (3) by a screw-locking structure. One end of the connecting rod structure (6) is hinged to the handrail bracket (5), and the other end is hinged to the second mounting base (501).

6. The pull-out folding handcart according to claim 5, characterized in that, The connecting rod structure (6) includes connecting rod two (601) and connecting rod three (602). One end of the connecting rod three (602) is hinged to the second mounting base (501), and the other end is hinged to the connecting rod two. The other end of the connecting rod two (601) is hinged to the bottom of the handrail bracket (5).

7. The pull-out folding handcart according to claim 6, characterized in that, The bottom of the handrail bracket (5) has a slot (502) whose length is adapted to the length of the connecting rod two (601). One end of the connecting rod two (601) is hinged to the front of the slot (502), and the other end is hinged to the connecting rod three (602).

8. The pull-out folding handcart according to claim 1, characterized in that, A transverse support (7) is provided between the two rear supports (3), and a horizontal plate (8) is provided on the transverse support (7). A seat plate (9) is provided on the top of the frame support (4).

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