Foldable standing walking-aid dining car

Abstract

A foldable standing walking-aid dining car comprises wheel carriers which are arranged in a left-right spaced mode, each wheel carrier comprises a front wheel rod and a rear wheel rod which are hinged to each other, wheels are arranged at the lower ends of the front wheel rods and the lower ends of the rear wheel rods, and stabilizing rods are arranged between the left front wheel rod and the right front wheel rod and between the left rear wheel rod and the right rear wheel rod. A handrail is connected between the left front wheel rod and the right front wheel rod; locking assemblies used for restraining relative rotation of the front wheel rods and the rear wheel rods are arranged on the front wheel rods and the rear wheel rods, driving assemblies used for driving the locking assemblies to conduct unlocking are arranged on the wheel frames, and the driving assemblies and the locking assemblies are provided with transmission rods which are connected with each other. The front wheel rod or the rear wheel rod is provided with a brake used for braking the wheels, and the brake is connected with a brake cable. The driving assembly adopts the transmission rod to be in transmission fit with the locking assembly, so that the problem that unlocking is easily caused by mistaken touch in the prior art is solved, and the use stability of a product is improved.

Description

Technical Field

[0001] The utility model relates to a foldable standing walking assist food truck. Background Art

[0002] Chinese Patent Document No. CN210727092U disclosed a foldable walking assist food truck on June 12, 2020, which includes a front wheel frame and a rear wheel frame hinged to the front wheel frame. The foldable walking assist food truck further includes a storage rack hinged to the top end of the rear wheel frame. Limiting structures are arranged on both opposite sides of the storage rack. The limiting structure includes a limiting connecting rod and a first limiting block fixed to the side of the storage rack. One end of the limiting connecting rod is hinged to the storage rack through a first hinge shaft, and the other end of the limiting connecting rod is hinged to the front wheel frame through a second hinge shaft. A first limiting groove for clamping the first limiting block is arranged on one side of the limiting connecting rod; when the limiting connecting rod rotates towards the first limiting block, the rear wheel frame and the front wheel frame are unfolded with each other, and when the limiting connecting rod rotates away from the first limiting block, the rear wheel frame and the front wheel frame are folded with each other.

[0003] Based on the above, the prior art cooperates and locks through the storage rack and the limiting connecting rod. When folding and storing is required, while holding the handle, the storage rack is driven to turn upwards to unlock and separate the storage rack from the limiting connecting rod. The technical problem existing in this locking structure is that when the storage rack moves upwards under force, it is easy to be unlocked by accidental touch, and the stability is poor, which needs to be further improved. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a foldable standing walking assist food truck to overcome the deficiencies in the prior art.

[0005] A foldable standing walking assist food truck designed according to this purpose includes wheel frames arranged at intervals left and right. The wheel frame includes a front wheel rod and a rear wheel rod that are hinged to each other. Wheels are arranged at the lower ends of the front wheel rod and the rear wheel rod. Stabilizing rods are arranged between the left and right front wheel rods and between the left and right rear wheel rods. An armrest is connected between the left and right front wheel rods; a locking component for restricting the relative rotation of the front wheel rod and the rear wheel rod is arranged on the front and rear front wheel rods and rear wheel rods. A driving component for driving the locking component to be unlocked is arranged on the wheel frame. The driving component and the locking component are connected to each other by a transmission rod.

[0006] Further, the locking component includes a first locking rod hinged to the front wheel rod and a second locking rod hinged to the rear wheel rod. The second locking rod and the first locking rod are hinged to each other. A locking notch with an open upper end is arranged on the first locking rod. A locking convex block that is inserted into the locking notch from top to bottom is arranged on the second locking rod; the transmission rod is hinged to the second locking rod.

[0007] Further, the driving component includes a fixed plate member disposed on the front wheel rod. A locking groove is provided at the rear side of the fixed plate member. A movable plate member is hinged to the fixed plate member. An activity groove is provided at the rear side of the movable plate member. The transmission rod is hinged to the movable plate member. The driving component further includes a driving lock rod. The left and right ends of the driving lock rod are movably disposed in the activity groove. The left and right ends of the driving lock rod are inserted into the locking groove to form a lock. A tension spring is connected to the movable plate member, and the tension spring is connected to the driving lock rod.

[0008] Further, a fixed frame is further included. The left and right sides of the fixed frame are fixedly connected to the movable plate member. The fixed frame is connected with a storage bag, and a dinner plate is installed on the fixed frame.

[0009] Further, a brake is provided on the front wheel rod or the rear wheel rod for braking the wheel. The brake is connected with a brake wire. A brake pull rod is movably disposed on the armrest, and the brake wire is connected to the brake pull rod.

[0010] Further, the brake wire is arranged inside the front wheel rod and the rear wheel rod.

[0011] In the present utility model, locking components for restricting relative rotation of the front wheel rod and the rear wheel rod are provided on the front wheel rod and the rear wheel rod at the front and the rear. A driving component for driving the locking components to be unlocked is provided on the wheel frame. The driving component and the locking components are connected to each other by a transmission rod. In the present utility model, the driving component adopts a transmission rod to perform transmission cooperation with the locking components, avoiding the problem of easy unlocking due to accidental touch in the prior art and improving the use stability of the product.

[0012] In the present utility model, the brake wire is arranged inside the front wheel rod and the rear wheel rod. The built-in brake wire not only makes the whole product appearance more neat and smooth, but also enhances the safety performance of the brake wire. Description of the Drawings

[0013] Figure 1 It is one of the three-dimensional structure diagrams of the walking aid in the unfolded and in-use state.

[0014] Figure 2 It is Figure 1 The enlarged structure diagram at A in

[0015] Figure 3 It is the second three-dimensional structure diagram of the walking aid in the unfolded and in-use state.

[0016] Figure 4 It is Figure 2 The enlarged structure diagram at B in

[0017] Figure 5 It is the three-dimensional structure diagram of the walking aid in the folded and stored state.

[0018] Figure 6 The third three-dimensional structure schematic diagram of the walking aid in the unfolded and in-use state.

[0019] Figure 7 The sectional structure schematic diagram of the wheel frame.

[0020] In the figure: 10 is the wheel frame, 100 is the wheel, 110 is the front wheel rod, 120 is the rear wheel rod, 130 is the stabilizer bar, 140 is the handrail, 20 is the locking assembly, 210 is the first locking rod, 211 is the locking notch, 220 is the second locking rod, 221 is the locking protrusion, 30 is the driving assembly, 310 is the fixed plate member, 311 is the locking groove, 320 is the movable plate member, 321 is the movable groove, 330 is the tension spring, 40 is the fixed frame, 410 is the storage bag, 420 is the dining plate, 50 is the transmission rod, 60 is the brake, 610 is the brake wire, 620 is the brake pull rod. Detailed implementation manners

[0021] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0022] Refer to Figures 1-7 , a foldable standing walking dining cart, including wheel frames 10 arranged at intervals left and right. The wheel frames 10 include a front wheel rod 110 and a rear wheel rod 120 which are hinged to each other. Wheels 100 are provided at the lower ends of the front wheel rod 110 and the rear wheel rod 120. Stabilizer bars 130 are provided between the left and right front wheel rods 110 and between the left and right rear wheel rods 120. A handrail 140 is connected between the left and right front wheel rods 110. A locking assembly 20 for restricting the relative rotation of the front wheel rod 110 and the rear wheel rod 120 is provided between the front and rear front wheel rods 110 and rear wheel rods 120. A driving assembly 30 for driving the locking assembly 20 to unlock is provided on the wheel frame 10. The driving assembly 30 and the locking assembly 20 are connected to each other by a transmission rod 50. The driving assembly of the present utility model adopts a transmission rod to be in transmission cooperation with the locking assembly, avoiding the problem of easy unlocking due to accidental touch in the prior art and improving the use stability of the product.

[0023] In the unfolded and in-use state, the locking assembly 20 restricts the relative rotation of the front wheel rod 110 and the rear wheel rod 120, so that the front wheel rod 110 and the rear wheel rod 120 are kept in the unfolded state.

[0024] When folding and storing, by operating the driving assembly 30 to drive the transmission rod 50 to drive the locking assembly 20 to unlock, the front wheel rod 110 and the rear wheel rod 120 rotate relative to each other to enter the folded state.

[0025] Refer to Figure 1, the locking assembly 20 includes a first locking rod 210 hinged to the front wheel rod 110 and a second locking rod 220 hinged to the rear wheel rod 120. The second locking rod 220 is hinged to the first locking rod 210. A locking notch 211 with an upper opening is provided on the first locking rod 210, and a locking protrusion 221 that is inserted into the locking notch 211 from top to bottom is provided on the second locking rod 220. The transmission rod 50 is hinged to the second locking rod 220. When the locking protrusion 221 is inserted into the locking notch 211, the first locking rod 210 and the second locking rod 220 maintain a supporting state to restrict the relative rotation of the front wheel rod 110 and the rear wheel rod 120, thereby achieving locking.

[0026] See Figure 2 and Figure 4 , the driving assembly 30 includes a fixing plate member 310 fixedly arranged on the front wheel rod 110. A locking groove 311 is provided at the rear side of the fixing plate member 310. A movable plate member 320 is hinged to the fixing plate member 310. An activity groove 321 is provided at the rear side of the movable plate member 320. The transmission rod 50 is hinged to the movable plate member 320. The driving assembly 30 further includes a driving lock rod 300. The left and right ends of the driving lock rod 300 are movably arranged in the activity groove 321, and the left and right ends of the driving lock rod 300 are inserted into the locking groove 311 to form a lock. A tension spring 330 is connected to the movable plate member 320, and the tension spring 330 is connected to the driving lock rod 300.

[0027] When the driving lock rod 300 is simultaneously located in the activity groove 321 and the locking groove 311, it can restrict the movable plate member 320 from moving relative to the fixing plate member 310. Thus, under the action of the transmission rod 50, it can restrict the second locking rod 220 from moving, so that the locking assembly 20 remains in the locked state. The function of the tension spring 330 is to apply a force to the driving lock rod 300 to keep it inserted into the locking groove 311.

[0028] When it is necessary to operate the locking assembly 20 to enter the unlocked state, by pulling the driving lock rod 300 to move it backward, during the backward movement, it gradually disengages from the locking groove 311 and the tension spring 330 is stretched to store energy until the driving lock rod 300 disengages from the locking groove 311. When the driving lock rod 300 is completely disengaged from the locking groove 311, the movable plate member 320 can be turned upward relative to the fixing plate member 310 to drive the transmission rod 50 to move upward, to drive the second locking rod 220 to move upward, so that the locking protrusion 221 disengages from the locking notch 211. When the second locking rod 220 is driven by the transmission rod 50 to turn upward, it synchronously drives the first locking rod 210 to turn upward to drive the front wheel rod 110 and the rear wheel rod 120 to rotate relatively, so that the wheel frame 10 is folded.

[0029] See Figure 1 , further including a fixed frame 40, the left and right sides of the fixed frame 40 are fixedly connected to the movable plate member 320, the fixed frame 40 is connected with a storage bag 410, and a dining plate 420 is installed on the fixed frame 40.

[0030] Furthermore, the storage bag 410 is a cloth bag, and the dining plate 420 is inserted and fixed in the fixed frame 40.

[0031] See Figure 6 and Figure 7 , a brake 60 for braking the wheel 100 is provided on the front wheel rod 110 or the rear wheel rod 120, the brake 60 is connected with a brake wire 610, a brake pull rod 620 is movably arranged on the armrest 140, the brake wire 610 is connected with the brake pull rod 620, and the brake wire 610 is arranged inside the front wheel rod 110 and the rear wheel rod 120.

[0032] Furthermore, the parts of the folding walking aid connected by screws and nuts are all connected by lock screws.

[0033] When the product is not in use, the user can press the driving lock rod 300 to make the product fold into the state as shown in Figure 5 .

[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation to the present invention. The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features.

[0035] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the description in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A foldable standing walking dining cart, comprising a wheel frame (10) arranged at intervals on the left and right, the wheel frame (10) comprising a front wheel rod (110) and a rear wheel rod (120) hingedly arranged with each other, wheels (100) being arranged at the lower ends of the front wheel rod (110) and the rear wheel rod (120), a stabilizing rod (130) being arranged between the left and right front wheel rods (110) and between the left and right rear wheel rods (120), and a handrail (140) being connected between the left and right front wheel rods (110); characterized in that: A locking assembly (20) for restricting the front wheel rod (110) and the rear wheel rod (120) from rotating relative to each other is arranged on the front and rear wheel rods (110) and the rear wheel rod (120). A driving assembly (30) for driving the locking assembly (20) to unlock is arranged on the wheel frame (10). The driving assembly (30) and the locking assembly (20) are connected to each other by a transmission rod (50).

2. A foldable stand-up dining vehicle according to claim 1, characterized in that: The locking assembly (20) comprises a first locking rod (210) hingedly arranged on the front wheel rod (110) and a second locking rod (220) hingedly arranged on the rear wheel rod (120); the second locking rod (220) and the first locking rod (210) are hingedly connected to each other; the first locking rod (210) is provided with a locking notch (211) with an upper end opening; the second locking rod (220) is provided with a locking protrusion (221) which is inserted into the locking notch (211) from top to bottom; the transmission rod (50) and the second locking rod (220) are hingedly connected to each other.

3. A foldable stand-up dining vehicle according to claim 2, characterized in that: The driving assembly (30) comprises a fixed plate (310) fixedly arranged on the front wheel rod (110), a locking groove (311) being arranged on the rear side of the fixed plate (310), a movable plate (320) being hingedly connected to the fixed plate (310), a movable groove (321) being arranged on the rear side of the movable plate (320), the transmission rod (50) being hingedly connected to the movable plate (320), the driving assembly (30) further comprises a driving lock rod (300), the left and right ends of the driving lock rod (300) being movably arranged in the movable groove (321), the left and right ends of the driving lock rod (300) being inserted into the locking groove (311) to form a lock, the movable plate (320) being connected with a tension spring (330), the tension spring (330) being connected to the driving lock rod (300).

4. The foldable stand-up dining vehicle according to claim 3, characterized in that: It also includes a fixed frame (40), the left and right sides of which are fixedly connected to the movable plate (320), the fixed frame (40) being connected to a storage bag (410), and a dining tray (420) being installed on the fixed frame (40).

5. The foldable stand-up dining vehicle according to claim 1, characterized in that: The front wheel rod (110) or the rear wheel rod (120) is provided with a brake (60) for braking the wheel (100), the brake (60) is connected to a brake line (610), and a brake pull rod (620) is movably provided on the handrail (140), and the brake line (610) is connected to the brake pull rod (620).

6. The foldable stand-up dining vehicle according to claim 5, characterized in that: The brake line (610) is passed through the front wheel rod (110) and the rear wheel rod (120).

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