Frame stabilizing structure for a shifting vehicle

Abstract

The utility model relates to a kind of frame stabilizing structure of displacement vehicle, including frame, the frame includes base, two support footrests, lifting column and support handrail;The lifting column is connected in the central axis position of base, the support handrail is connected on the movable end of lifting column, and the support handrail is connected with the single board cushion placed below it;The rear end of two support footrests is respectively rotationally connected in the outside of base, and the front and rear ends of two support footrests are all connected with universal trundle, the rear side of base is equipped with outer support synchronous mechanism, outer support synchronous mechanism is transmission connection with the rear end of two support footrests, and two support footrests are driven between outer support position and retracted position by outer support synchronous mechanism and convert;This displacement vehicle in use process, the support footrest in it can be driven by outer support synchronous mechanism and be opened to outside and present "eight" character, to increase support area, for coping with the situation that displacement vehicle is inclined due to gravity transfer caused by user body lateral inclination.

Description

Technical Field

[0001] This utility model relates to the field of transfer vehicles, specifically a frame stabilization structure for a transfer vehicle. Background Technology

[0002] Current transfer cart structures, as shown in Chinese patent document, application number 202322221631.3, include a safety locking type transfer cart, mainly comprising an H-shaped frame, a base located at the bottom of the frame, and left and right seats respectively rotatably mounted on both sides of the top of the frame. The left and right seats are combined to form a support structure for carrying the patient. As shown in the prior art above, the base of existing transfer carts is also H-shaped. During use or transfer, the base has a fixed structure. However, for some users with poor body support (such as hemiplegia due to stroke causing tilting to one side), the transfer cart is prone to tipping over. Therefore, the applicant has improved and perfected the transfer cart to solve the above problems and provide it for consumers to choose and use. Summary of the Invention

[0003] The purpose of this utility model is to solve the above-mentioned existing problems and provide a simple and reasonable frame stabilization structure for a transfer vehicle.

[0004] A frame stabilization structure for a transfer vehicle includes a frame comprising a base, two support legs, a lifting column, and a support armrest. The lifting column is connected to the central axis of the base, and the support armrest is connected to the movable end of the lifting column, with a single-layer seat cushion attached to the armrest below it. The rear ends of the two support legs are rotatably connected to the outer side of the base, and both the front and rear ends of the two support legs are connected to swivel casters. An external support synchronization mechanism is provided on the rear side of the base, which is drively connected to the rear ends of the two support legs. The two support legs are driven to switch between an external support position and an inward retraction position through the external support synchronization mechanism.

[0005] The objective of this utility model can also be achieved by the following technical measures:

[0006] As a more specific solution, the external support synchronization mechanism mainly includes a rotating plate, a left push rod, and a right push rod. The rotating plate is rotatably connected to the central axis position on the rear side of the base. One end of the left push rod and the right push rod are respectively hinged to the left or right end of the rotating plate, and the other end of the left push rod and the right push rod are respectively hinged to the inner rear end of the two support legs.

[0007] As a further embodiment, one end of the rotating plate extends along its length with a first power arm, the end of which is equipped with an inward-facing foot pedal; the other end of the rotating plate extends along its included angle with a second power arm, the end of which is equipped with an outward-facing foot pedal.

[0008] As a further embodiment, the rear side of the base is provided with a rotation limiting part corresponding to the first power arm and the second power arm, and the first power arm and the second power arm are provided with a limiting engagement part that cooperates with the corresponding rotation limiting part.

[0009] As a further embodiment, the rotation limiting part includes a limiting shaft fixed on the base and an elastic buffer sleeve sleeved on the outer end of the limiting shaft. The limiting mating part includes a positioning recess formed at the bottom edge of the first power arm and the second power arm, and the positioning recess is engaged with the elastic buffer sleeve.

[0010] As a further embodiment, the outer side of the base is provided with a first tube fork, and a C-shaped support clamp is fixedly connected inside the first tube fork. The support leg is rotatably connected inside the C-shaped support clamp via a rotating shaft.

[0011] As a further embodiment, both support legs include a rear support section and a front support section. The rear support section is rotatably connected to the outside of the base, and the front support section is rotatably connected to the front end of the rear support section and can be folded inward to the front of the base.

[0012] As a further solution, the rear end of the front support section is provided with a movable locking structure, which locks with the front end of the rear support section when the front support section is unfolded relative to the rear support section.

[0013] As a further embodiment, the support armrest has a "U" shaped structure, including a middle section and two handrails. The middle section is connected to the movable end of the lifting column, and the two handrails are symmetrically connected to the two ends of the middle section. The seat cushion is connected between the two handrails.

[0014] As a further embodiment, the maximum opening angle of the support leg between the outward-extended position and the inward-retracted position is 15°-20°.

[0015] The beneficial effects of this utility model are as follows:

[0016] This utility model discloses a frame stabilization structure for a transfer cart. During use, the support legs of this transfer cart can be extended outward in a figure-eight shape under the drive of the external support synchronization mechanism, thereby increasing the support area and coping with the tilting of the transfer cart due to the shift of the center of gravity caused by the user's body tilting. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of one embodiment of the present invention.

[0018] Figure 2 This is a schematic diagram of the support leg structure in the inward-retracted position of this utility model.

[0019] Figure 3This is a schematic diagram of the support frame in the external support position of this utility model.

[0020] Figure 4 This is an exploded view of the support frame and base in this utility model.

[0021] Figure 5 This is a schematic diagram of the movable locking structure in this utility model. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] See Figures 1 to 5 As shown, a frame stabilization structure for a transfer vehicle includes a frame 1, which includes a base 2, two support legs 3, a lifting column 4, and a support armrest 5. The lifting column 4 is connected to the central axis of the base 2, and the support armrest 5 is connected to the movable end of the lifting column 4. A single-board seat cushion 6 is connected to the support armrest 5 and placed below it. The rear ends of the two support legs 3 are rotatably connected to the outside of the base 2, and both the front and rear ends of the two support legs 3 are connected to universal casters 7. An external support synchronization mechanism 8 is provided on the rear side of the base 2. The external support synchronization mechanism 8 is driven to the rear ends of the two support legs 3, and the two support legs 3 are driven to switch between an external support position and an inward position through the external support synchronization mechanism 8.

[0024] During use, the support legs 3 of this transfer cart can be extended outward in a figure-eight shape under the drive of the external support synchronization mechanism 8, thereby increasing the support area to cope with the tilting of the transfer cart due to the shift of the center of gravity caused by the user's body tilting.

[0025] The external support synchronization mechanism 8 mainly includes a rotating plate 81, a left push rod 82, and a right push rod 83. The rotating plate 81 is rotatably connected to the central axis position on the rear side of the base 2. One end of the left push rod 82 and the right push rod 83 are respectively hinged to the left or right end of the rotating plate 81 through a universal joint structure. The other end of the left push rod 82 and the right push rod 83 are respectively hinged to the inner rear end of the two support legs 3 through a universal joint structure. The universal joint structure at both ends enables the left push rod 82 or the right push rod 83 to move left and right, up and down, and forward and backward at the same time.

[0026] One end of the rotating plate 81 extends along its length direction with a first power arm 811, and the arm end of the first power arm 811 is equipped with an inward foot pedal 84. The other end of the rotating plate 81 extends along its included angle direction with a second power arm 812, and the arm end of the second power arm 812 is equipped with an outward support foot pedal 85.

[0027] Based on the above structure, the method of using the frame stabilization structure is as follows: In the initial state, such as Figure 2As shown, the rotating plate 81 is placed horizontally. At this time, the left push rod 82 and the right push rod 83 are in the outward pushing position, and the two support legs 3 are in the inward retracting position and are arranged parallel to each other.

[0028] When the caregiver needs to extend the support leg 3, they step on the outer support foot pedal 85, which drives the rotating plate 81 to rotate to a vertical position. At this time, the left push rod 82 and the right push rod 83 pull the rear end of the support leg 3 inward, thereby extending the support leg 3 to the outer support position (e.g., Figure 3 (As shown), conversely, when the caregiver needs to retract the support leg 3, they only need to step on the inward foot pedal 84 to reverse the movement of the above structure, thereby returning it to its initial state.

[0029] The base 2 has a rotation limiting part on the rear side corresponding to the first power arm 811 and the second power arm 812. The first power arm 811 and the second power arm 812 are provided with limiting mating parts that cooperate with the corresponding rotation limiting parts. The rotation limiting parts and the limiting mating parts mainly limit the first power arm 811 and the second power arm 812, thereby controlling the rotation amplitude of the rotating plate 81.

[0030] The rotation limiting part includes a limiting shaft 861 fixed on the base and an elastic buffer sleeve 862 sleeved on the outer end of the limiting shaft 861. The limiting mating part includes a positioning recess 863 opened on the bottom edge of the first power arm 811 and the second power arm 812. The positioning recess 863 is engaged with the elastic buffer sleeve 862. The elastic buffer sleeve 862 can buffer the impact force of the first power arm 811 or the second power arm 812 on the limiting shaft 861, reduce the collision noise generated when touched, and improve the service life of the limiting shaft 861.

[0031] The base 2 is provided with a first tube fork 21 on the outside. A C-shaped support clip 22 is fixedly connected inside the first tube fork 21. The support leg 3 is rotatably connected inside the C-shaped support clip 22 through a rotating shaft 23. The C-shaped support clip 22 can improve the strength of the first tube fork 21 and prevent the first tube fork 21 from deforming.

[0032] The C-type support clamp 22 includes a support plate 221 placed on the upper and lower surfaces of the support frame 3 and a vertical support plate 222 connected between the two support plates 221.

[0033] Both support legs 3 include a rear support section 31 and a front support section 32. The rear support section 31 is rotatably connected to the outside of the base 2, and the front support section 32 is rotatably connected to the front end of the rear support section 31 and can be folded inward to the front of the base 2.

[0034] The support legs 3 of this structure can be folded for storage, further reducing the volume when stored. The components are no longer scattered when stored, and the switching between storage and use can be achieved quickly, eliminating the need for the support legs to be installed every time they are reused.

[0035] The rear end of the front support section 32 is provided with a movable locking structure. When the front support section 32 is unfolded relative to the rear support section 31, the movable locking structure locks with the front end of the rear support section 31.

[0036] The rear support section 31 is provided with a pipe connector 311 at its front end, and the front support section 32 is provided with a second pipe fork 321 at its rear end. The second pipe fork 321 is rotatably connected to the pipe connector 311 through a hinge shaft 33, so that the two front support sections 32 are folded in front of the base 2 respectively.

[0037] The active locking structure includes a hexagonal head 34, with an external threaded sleeve 341 at the bottom of the hexagonal head 34 and a lower clutch part 342 at the top of the hexagonal head 34. The upper part of the second pipe fork 321 has a threaded hole 322 that connects to the external threaded sleeve 341.

[0038] It also includes a manual knob 35, the bottom of which is provided with a pin 351 that passes through the hexagonal head 34 and the external threaded sleeve 341, and an upper clutch part 352 that cooperates with the lower clutch part 342. The pipe connector 311 has a pin hole that cooperates with the pin 351. The pin hole includes a first pin hole 312 and a second pin hole 313 corresponding to the unfolded position and the folded position of the front support section 32.

[0039] During installation, the hexagonal head 34 is screwed into the threaded hole 322 through the external threaded sleeve 341, thereby fixing it to the second pipe fork 321. The hexagonal head 34 can be screwed in using a tool for better tightening. Alternatively, after the manual knob 35 is coupled with the lower clutch 342 through the upper clutch 352, the manual knob 35 can be used to drive the hexagonal head 34 to rotate synchronously, so that the external threaded sleeve 341 can be screwed into the threaded hole 322.

[0040] When the current support section 32 is unfolded, the user can use the manual knob 35 to pull out the pin 351. After the pin 351 is aligned with the first pin hole 312, the user can then control the manual knob 35 to insert the pin 351 into the first pin hole 312 to complete the unfolding and locking. Conversely, when the current support section 32 is folded, the user can use the manual knob 35 to pull out the pin 351 from the first pin hole 312 to unlock it. Then, the user can fold the front support section 32 inward until the pin 351 is aligned with the second pin hole 313. Finally, the user can control the manual knob 35 to insert the pin 351 into the second pin hole 313 to complete the folding and locking.

[0041] The supporting armrest 5 has a "U" shaped structure, including a middle section 51 and two armrests 52. The middle section 51 is connected to the movable end of the lifting column 4, and the two armrests 52 are symmetrically connected to the two ends of the middle section 51. The seat cushion 6 is connected between the two armrests 52.

[0042] The support armrest 5 has sufficient strength to support the user. The U-shaped support armrest 5 is simple in design and takes up little space when folded. The armrest 52 can support the seat cushion 6 while maintaining its function as an armrest.

[0043] The maximum opening angle Θ of the support leg 3 between the outward and inward positions is 15°-25°; the opening angle of the support leg 3 within this reasonable range can ensure that the support area is increased while maintaining the front and rear support stability.

[0044] The above describes the preferred embodiments of this utility model, illustrating and describing its basic principles, main features, and advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.

Claims

1. A frame stabilizing structure of a shifting vehicle, comprising a vehicle frame (1), characterized in that: The frame (1) includes a base (2), two support legs (3), a lifting column (4), and a support armrest (5); the lifting column (4) is connected to the central axis of the base (2), the support armrest (5) is connected to the movable end of the lifting column (4), and a single-board seat cushion (6) is connected to the support armrest (5) and placed below it; the rear ends of the two support legs (3) are respectively rotatably connected to the outside of the base (2), and the front and rear ends of the two support legs (3) are connected to universal casters (7); the rear side of the base (2) is provided with an external support synchronization mechanism (8), the external support synchronization mechanism (8) is connected to the rear end of the two support legs (3) through a transmission connection, and the two support legs (3) are driven to switch between the external support position and the inward position through the external support synchronization mechanism (8).

2. The frame stabilization structure of a transfer vehicle according to claim 1, characterized in that: The external support synchronization mechanism (8) mainly includes a rotating plate (81), a left push rod (82) and a right push rod (83). The rotating plate (81) is rotatably connected to the central axis position on the rear side of the base (2). One end of the left push rod (82) and the right push rod (83) are respectively hinged to the left or right end of the rotating plate (81), and the other end of the left push rod (82) and the right push rod (83) are respectively hinged to the inner rear end of the two support legs (3).

3. The frame stabilization structure of a transfer vehicle according to claim 2, characterized in that: One end of the rotating plate (81) extends along its length direction with a first power arm (811), and the arm end of the first power arm (811) is equipped with an inward foot pedal (84). The other end of the rotating plate (81) extends along its included angle direction with a second power arm (812), and the arm end of the second power arm (812) is equipped with an outward support foot pedal (85).

4. The frame stabilization structure of a transfer vehicle according to claim 1, characterized in that: The base (2) has a rotation limiting part on the rear side corresponding to the first power arm (811) and the second power arm (812). The first power arm (811) and the second power arm (812) are provided with limiting parts that cooperate with the corresponding rotation limiting parts.

5. The frame stabilization structure of a transfer vehicle according to claim 4, characterized in that: The rotation limiting part includes a limiting shaft (861) fixed on the base and an elastic buffer sleeve (862) sleeved on the outer end of the limiting shaft (861). The limiting fitting part includes a positioning recess (863) opened on the bottom edge of the first power arm (811) and the second power arm (812). The positioning recess (863) is engaged with the elastic buffer sleeve (862).

6. The frame stabilization structure of a transfer vehicle according to claim 1, characterized in that: The base (2) has a first tube fork (21) on its outer side, and a C-shaped support clamp (22) is fixedly connected inside the first tube fork (21). The support leg (3) is rotatably connected inside the C-shaped support clamp (22) via a rotating shaft (23).

7. The frame stabilization structure of a transfer vehicle according to claim 1, characterized in that: The two support legs (3) each include a rear support section (31) and a front support section (32). The rear support section (31) is rotatably connected to the outside of the base (2), and the front support section (32) is rotatably connected to the front end of the rear support section (31) and can be folded inward to the front of the base (2).

8. The frame stabilization structure of a transfer vehicle according to claim 7, characterized in that: The rear end of the front support section (32) is provided with a movable locking structure. When the front support section (32) is unfolded relative to the rear support section (31), the movable locking structure locks and cooperates with the front end of the rear support section (31).

9. The frame stabilization structure of a transfer vehicle according to claim 1, characterized in that: The support armrest (5) has a "U" shaped structure, including a middle section (51) and two armrests (52). The middle section (51) is connected to the movable end of the lifting column (4), and the two armrests (52) are symmetrically connected to the two ends of the middle section (51). The seat cushion (6) is connected between the two armrests (52).

10. The frame stabilization structure of a transfer vehicle according to claim 1, characterized in that: The maximum opening angle Θ of the support leg (3) between the outward support position and the inward retraction position is 15°-20°.

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