CN117429486A - Pedal cart - Google Patents

Abstract

The invention relates to the field of carts, and provides a pedal cart which comprises a bottom plate, universal casters arranged at the bottom of the bottom plate, two fixing seats arranged on the bottom plate, and a handrail frame rotatably connected with the fixing seats through a first rotating piece, wherein first sliding holes are formed in the two fixing seats, sliding pieces are slidably arranged on the first sliding holes, a reset piece is connected between the sliding pieces and the first rotating piece, the sliding pieces can fix the unfolded handrail frame, and a jacking mechanism and an extension mechanism are rotatably arranged on the fixing seats; the universal castor is arranged right below the fixing seat. Through the pedal extension mechanism, a user can pedal lightly with smaller force, and the universal castor is arranged at the bottom of the fixed seat, so that the universal castor can bear the acting force well during pedal, and tilting is prevented; solves the technical problems that when the handrails of the cart are unfolded, the handrails need to bend down, inconvenience is brought to the use, and the pedal rod needs to use larger force when trampling, so that the bottom plate is easy to tilt.

Description

Pedal cart

Technical Field

The invention relates to the technical field of trolley equipment, in particular to a pedal trolley.

Background

The existing folding cart needs to be bent to unfold the armrests, when people hold articles or are inconvenient to bend down, the armrests are difficult to open by feet, inconvenience is brought to use, the armrests are usually arranged at two corners of the front end of the cart bottom plate, the truckles are arranged at the bottom of the cart bottom plate, the truckles are arranged at the rear end of the armrests so as to avoid the armrests of the cart, the supporting property of the front ends of the truckles of the cart is poor, particularly, the connecting part of the armrests and the bottom plate is poor, the supporting force is small and is easy to damage due to the large stressed area of the bottom plate, and the sensitivity and stability of the truckles in steering are poor; the pedal lever of a folding cart generally requires a large force to pedal, which can easily lead to tilting of the bottom plate.

For example, chinese patent grant publication No. CN216659995U discloses a multipurpose handcart capable of transporting a tub, which comprises a bottom plate, wherein the bottom of the bottom plate is provided with universal wheels, one side of the bottom plate is provided with a pushing handle, a plurality of positioning slots are uniformly distributed on the bottom plate, and the positioning slots are adapted to the bottom of the tub to be transported. The handcart is convenient to carry, not only can adapt to the transportation of the articles of the barrel body, but also can transport the articles which are suitable for being placed on a plane; the locating groove is arranged on the bottom plate, so that the barrel body is stable and reliable when the barrel body articles are conveyed, the barrel body can be prevented from toppling, rolling or being damaged, and the safety is high; the cover plate is covered in the positioning groove, the trolley can be used as a common flat trolley for conveying articles suitable for being placed on a plane, and the trolley is high in adaptability and convenient to carry. When the trundle handrail is unfolded, the trundle handrail needs to be bent, inconvenience is brought to use, the pedal rod of the folding cart usually needs to be trampled with larger force, and the bottom plate is easy to tilt.

Disclosure of Invention

Accordingly, in view of the above-mentioned problems, the present invention proposes a pedal cart. The technical problems that when the trolley handrail is unfolded, the trolley handrail needs to be bent down, inconvenience is brought to use, and when the pedal rod is trampled, larger force is needed, so that the bottom plate is easy to tilt are solved.

In order to achieve the above purpose, the present invention adopts the following technical scheme:

the pedal trolley comprises a bottom plate, universal casters arranged at the bottom of the bottom plate, two fixing seats arranged on the bottom plate, and a handrail frame rotatably connected to the fixing seats through first rotating pieces, wherein first sliding holes are formed in the two fixing seats, sliding pieces are slidably arranged on the first sliding holes, a resetting piece is connected between the sliding pieces and the first rotating pieces, the sliding pieces can fix the unfolded handrail frame, a jacking mechanism and an extension mechanism are rotatably arranged on the fixing seats, the extension mechanism is rotatably arranged on the fixing seats through a second rotating piece, a second sliding hole is formed in the jacking mechanism, the sliding pieces penetrate through the second sliding holes, a jacking part capable of jacking the handrail frame upwards for opening is arranged on the jacking mechanism, at least one third sliding hole is formed in the extension mechanism, the sliding pieces penetrate through the third sliding holes, an extension part is arranged on the extension mechanism, and a pedal rod is connected between the two extension parts; the universal castor is arranged right below the fixing seat, and the fixing seat and the universal castor are fixed on the bottom plate through fixing pieces.

Further:

the fixing piece comprises at least two pairs of bolts and nuts, and at least two bolts penetrate through the bottom plate and the universal casters to fix.

At least one of the bolts is sleeved with a sleeve, the bottom plate is provided with a mounting hole, the sleeve is positioned in the mounting hole, and the length of the sleeve is not greater than the height of the mounting hole.

At least one of the mounting holes is provided with a groove body at the top, the end part of the bolt is arranged in the groove body, and a sealing plug is arranged at the top of the groove body.

The rear end of the bottom plate is provided with at least one rolling caster, and the distance between the rolling caster and the rear end of the bottom plate is one fifth to one third of the length of the bottom plate.

The jacking mechanism comprises two first side plates, the second sliding holes are formed in the first side plates, and the jacking parts are formed in the first side plates.

The extension mechanism comprises two second side plates, and the third sliding hole is formed in the second side plates.

The jacking mechanism is rotatably connected to the fixing seat through a first rotating piece.

The utility model discloses a handrail frame, including fixing base, the fixing base is equipped with the buffer piece on the fixing base, the buffer piece is including being fixed in the fixed part on the fixing base, connect in the first buffer part and the second buffer part at fixed part both ends respectively, first buffer part is along keeping away from the direction downward sloping of handrail frame, the handrail frame folding in-process can support in first buffer part, the second buffer part is along the direction upward sloping that is close to the handrail frame, when the handrail frame is opened, can support in the second buffer part.

The end parts of the first buffer part and the second buffer part are respectively provided with a bending part, and the handrail frame can be propped against the joint of the bending parts.

By adopting the technical scheme, the invention has the beneficial effects that:

according to the trolley disclosed by the invention, the sliding part is driven to move along the first sliding hole through the pedal extension mechanism, so that the jacking mechanism is driven to rotate to open the folded handrail frame, the handrail frame is not required to be bent down to open, the extension mechanism has the effect of lengthening the lever, the pedal can be realized with smaller force, a user can conveniently pedal with smaller force, and the abrasion, deformation and even damage of the folded handrail or other parts are prevented. When the armrest frame descends, the extension mechanism can be slowly rotated by trampling, so that the armrest frame slowly descends and folds, and the armrest frame is prevented from being impacted too fast in descending speed. And the jacking mechanism and the extension mechanism are convenient and quick to install and convenient to maintain.

Simultaneously, the universal castor sets up in the fixing base bottom, and when pedal, pedal effort transmits to the fixing base and gives the decurrent effort of bottom plate on, and the universal castor can bear this effort well, prevents when pedal, and the rear end of bottom plate uses the universal castor as the fulcrum perk.

Further, the fixing piece can penetrate through the fixing seat, the bottom plate and the universal castor to be fixed, operation is convenient and rapid, and materials are saved. Through set up the sleeve pipe in the bottom plate, when the bolt locking, the sleeve pipe has the effect of certain spacing support, prevents that the overtightening of bolt lock from leading to the bottom plate to warp, and when loading the goods, the sleeve pipe can also share the weight that the bottom plate received, gives the bottom plate holding power, can strengthen the bearing capacity of bottom plate greatly, can prevent effectively that the bottom plate from being flattened out and warp, and bending strength is showing and is promoting, has improved the life of bottom plate.

Further, the universal castor sets up in the front end, and the position of rolling castor moves forward, prevents that the distance between universal castor and the rolling castor is great, improves the bearing capacity of bottom plate.

Further, in the folding and falling process of the handrail frame, the handrail frame is contacted with the first buffer part of the buffer sheet, the first buffer part has a buffer function, a user can slowly fall down to be contacted with the bottom plate without stepping on the extension part, the handrail frame is prevented from being impacted and worn by the bottom plate, larger noise is prevented from being emitted, when the handrail frame is unfolded upwards, the handrail frame is contacted with the second buffer part of the buffer sheet, and the second buffer part of the buffer sheet has a buffer function, so that the excessive unfolding speed of the handrail frame is prevented from being impacted; further, the bending part can improve the strength of the buffer sheet and improve the buffer effect.

Drawings

Fig. 1 is a schematic structural view of a cart according to an embodiment.

Fig. 2 is a schematic structural view of a fixing base and a handrail frame according to an embodiment.

Fig. 3 is a partially exploded view of fig. 2.

Fig. 4 is a schematic structural view of a jack-up mechanism according to an embodiment.

Fig. 5 is a schematic structural view of an extension mechanism of the embodiment.

Fig. 6 is a cross-sectional view of a base plate and anchor block of an embodiment.

FIG. 7 is a cross-sectional view of an alternative angle of a base plate and anchor block of an embodiment.

Fig. 8 is a schematic structural diagram of a fixing base of the second embodiment.

Fig. 9 is a cross-sectional view of the fixing base of the second embodiment.

Fig. 10 is a schematic view of the structure of another state of fig. 9.

Fig. 11 is a schematic structural diagram of a buffer sheet according to the second embodiment.

Fig. 12 is a schematic view of the structure of the three-bottom plate of the embodiment.

Fig. 13 is a schematic view of the three-floor embodiment without casters.

Fig. 14 is a schematic view showing a partial structure of a three-bottom plate of the embodiment.

Fig. 15 is a schematic structural view of a third reinforcing bar of the embodiment.

Reference numerals illustrate:

the base plate 1, the universal caster 2, the fixing base 3, the armrest frame 4, the jack-up mechanism 5, the extension mechanism 6, the fixing member 7, the buffer 8, the mounting hole 11, the groove body 12, the sealing plug 13, the caster mounting portion 14, the clip groove 15, the reinforcing rod 16, the rolling caster 20, the first rotating member 31, the first sliding hole 32, the sliding member 33, the resetting member 34, the second rotating member 35, the second sliding hole 50, the jack-up portion 51, the first side plate 52, the third sliding hole 61, the extension portion 62, the pedal lever 63, the second side plate 64, the bolt 71, the nut 72, the sleeve 73, the fixing portion 81, the first buffer portion 82, the second buffer portion 83, the bending portion 84, the rod body 161, and the clip portion 162.

Detailed Description

The invention will now be further described with reference to the drawings and detailed description.

Example 1

Referring to fig. 1 to 7, a first embodiment provides a pedal cart, which comprises a base plate 1, universal casters 2 arranged at the bottom of the base plate 1, two fixing seats 3 arranged on the base plate 1, and a handrail frame 4 rotatably connected to the fixing seats 3 through a first rotating member 31, wherein the two fixing seats 3 are provided with first sliding holes 32, the first sliding holes 32 are slidably provided with sliding members 33, a resetting member 34 is connected between the sliding members 33 and the first rotating member 31, the sliding members 33 can fix the unfolded handrail frame 4, the fixing seats 3 are rotatably provided with a jacking mechanism 5 and an extension mechanism 6, the extension mechanism 6 is rotatably arranged on the fixing seats 3 through a second rotating member 35, the jacking mechanism 5 is provided with a second sliding hole 50, the sliding members 33 penetrate through the second sliding holes 50, the jacking mechanism 5 is provided with a jacking portion 51 capable of jacking the handrail frame 4 upwards, the jacking mechanism 5 comprises two first side plates 52, the second sliding holes 50 are arranged on the first side plates 52, and the jacking portion 51 is arranged on the first side plates 52. The extension mechanism 6 is provided with a third sliding hole 61, the sliding piece 33 passes through the third sliding hole 61, the extension mechanism 6 is provided with an extension part 62, and a foot rest lever 63 is connected between the two extension parts 62; the extension mechanism 6 includes two second side plates 64, the third sliding hole 61 is disposed on the second side plates 64, and the jack-up mechanism 5 is rotatably connected to the fixing base 3 through the first rotating member 31. The universal castor 2 is arranged right below the fixed seat 3, the fixed seat 3 and the universal castor 2 are fixed on the bottom plate 1 through the fixing piece 7, the fixing piece 7 comprises a plurality of pairs of bolts 71 and nuts 72, and two bolts 71 penetrate through the bottom plate 1 and the universal castor 2 to be fixed. The bolt 71 is sleeved with a sleeve 73, the bottom plate 1 is provided with a mounting hole 11, the sleeve 73 is positioned in the mounting hole 11, and the length of the sleeve 73 is not greater than the height of the mounting hole 11. The top of part of the mounting hole 11 is provided with a groove body 12, the end part of the bolt 71 is arranged in the groove body 12, and the top of the groove body 12 is provided with a sealing plug 13. The rear end of the bottom plate 1 is provided with two rolling casters 20, and the distance between the rolling casters 20 and the rear end of the bottom plate 1 is one quarter of the length of the bottom plate 1.

The sleeve 73 may not be provided, and may be provided as appropriate.

The return member 34 is a return spring.

The sealing plug 13 and the groove body 12 may not be provided, and may be provided according to circumstances.

The position of the rolling caster 20 is generally set as follows: the distance from the rear end of the base plate 1 is one fifth to one third of the length of the base plate 1, and the number of the rolling casters 20 can be one, two or more, and is particularly set according to circumstances.

The working mode of the invention is as follows:

when the trolley is unfolded, the foot pedal rod 63 is stepped on, the extension mechanism 6 rotates by taking the second rotating piece 35 as an axis, the sliding piece 33 is driven to slide downwards, the sliding piece 33 drives the jacking mechanism 5 to rotate, the jacking part 51 of the jacking mechanism 5 jacks up the handrail frame 4, the handrail frame 4 rotates upwards to a certain angle by taking the first rotating piece 31 as an axis, an operator does not need to bend down, the operator pulls up the lifted handrail frame 4 by hand, the foot pedal rod 63 is loosened, the resetting piece 34 pulls the sliding piece 33 to move upwards, the sliding piece 33 abuts against the handrail frame 4, and the handrail frame 4 is clamped between the sliding piece 33 and the fixed seat 3, so that labor is saved; when the cart is folded, the foot rest 63 is stepped on, the sliding piece 33 moves downwards to be separated from the armrest frame 4, an operator pushes the armrest frame 4 to rotate downwards, when the armrest frame 4 rotates to a certain angle, the armrest frame 4 abuts against the jacking part 51, the foot rest 63 is slowly released, the jacking part 51 and the armrest frame 4 slowly rotate downwards until the armrest frame 4 contacts with the bottom plate 1, and the folding of the armrest frame 4 is realized, in this way, the armrest frame 4 can slowly fall and lightly contact with the bottom plate 1, the armrest frame 4 is prevented from being impacted and worn by the bottom plate 1, larger noise is prevented from being emitted, the extension mechanism 6 has the function of lengthening the lever, the pedaling can be realized by smaller force, and the rotating speed of the armrest frame 4 is convenient to control.

Example two

Referring to fig. 1 to 11, the main difference between the second embodiment and the first embodiment is that the fixing base 3 of the second embodiment is provided with a buffer sheet 8, the buffer sheet 8 includes a fixing portion 81 fixed on the fixing base 3, a first buffer portion 82 and a second buffer portion 83 respectively connected to two ends of the fixing portion 81, the first buffer portion 82 is inclined downward in a direction away from the armrest frame 4, during the folding process of the armrest frame 4, the second buffer portion 83 is inclined upward in a direction close to the armrest frame 4, and when the armrest frame 4 is opened, the second buffer portion 83 can be abutted. The ends of the first buffer portion 82 and the second buffer portion 83 are both provided with a bending portion 84, and the armrest frame 4 can abut against the joint of the bending portion 84.

The buffer sheet 8 is detachably fixed on the fixed seat 3 through a screw, and the buffer sheet 8 is a spring piece.

When the handrail frame 4 of the second embodiment is folded, the operator steps on the foot lever 63, the operator does not need to push the handrail frame 4, the second buffer portion 82 of the buffer sheet 8 pushes the handrail frame 4 to rotate downward by a small angle, the handrail frame 4 can automatically rotate downward due to the action of gravity, the operator does not need to step on the jack-up portion 51 all the time, after the operator releases the jack-up portion 51, the reset member 34 pulls the sliding member 33 to move upward, the jack-up mechanism 5 rotates downward, when the handrail frame 4 falls to a certain angle, the handrail frame 4 contacts with the first buffer portion 82 of the buffer sheet 8, the first buffer portion 82 has the buffer effect, the larger angle of falling of the handrail frame 4 is the greater, the force applied to the handrail frame 4 by the first buffer portion 82 is the greater, the user can not need to step on the extension portion 62 all the time, the handrail frame 4 can slowly fall into contact with the base plate 1, the handrail frame 4 is prevented from being collided with the base plate 1, and larger noise is prevented from being emitted, when the operator expands upward, the foot lever 63 is pulled up by the foot lever, the handrail frame 4 takes the first rotating member 31 as the axis to a certain angle, the first rotating member 31 moves upward until the first buffer portion 33 reaches the second buffer sheet 8, the buffer frame 8 is more stable, the buffer effect is prevented from being more stable, and the handrail frame 4 is more stable, the buffer frame 83 is more stable, and the effect is better stable, and the handrail frame is stable, and the effect is stable, and the handrail frame is stable.

Example III

Referring to fig. 1 to 15, the main difference between the third embodiment and the first embodiment is that four caster mounting portions 14 are provided at the bottom of the base plate 1 of the third embodiment, a clamping groove 15 is provided on each caster mounting portion 14, a reinforcing rod 16 is connected between two adjacent caster mounting portions 14, a rectangular structure is formed between the four reinforcing rods 16, the reinforcing rod 16 includes a rod body 161, and clamping portions 162 provided at two ends of the rod body 161, the height of the rod body 161 is lower than that of the base plate 1, two ends of the reinforcing rod 16 extend to the caster mounting portions 14 to be fixed, and two ends of the rod body 161 are bent upwards to be capable of being inserted into the clamping groove 15.

The rod body 161 in the middle of the reinforcing rod 16 in the third embodiment can avoid the bottom plate 1, the reinforcing rod 16 does not need to be slotted on the bottom plate 1, the bottom plate 1 can be sold independently according to the needs of a buyer, the bottom plate 1 can be sold together with the reinforcing rod 16, when the bottom plate 1 does not have the reinforcing rod 16, the strength difference between the bottom plate 1 and the common bottom plate 1 is not great, the lower strength of the bottom plate 1 can not be caused by slotting, and when the bottom plate 1 with the reinforcing rod 16 and the bottom plate 1 without the reinforcing rod 16 is produced, two different moulds are not needed, so that the production cost is reduced, and the production efficiency is improved; the two ends of the reinforcing rod 16 extend to the caster mounting portion 14 to be fixed, and the bearing capacity of the caster mounting portion is improved.

While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (10)

1. The utility model provides a pedal shallow, includes bottom plate (1), locates universal castor (2) of bottom plate (1) bottom, two fixing base (3) of locating on bottom plate (1), rotationally connects in handrail frame (4) of fixing base (3) through first rotating member (31), its characterized in that: the two fixing seats (3) are provided with first sliding holes (32), the first sliding holes (32) are slidably provided with sliding pieces (33), reset pieces (34) are connected between the sliding pieces (33) and the first rotating pieces (31), the sliding pieces (33) can fix the unfolded handrail frame (4), the fixing seats (3) are rotatably provided with jacking mechanisms (5) and extension mechanisms (6), the extension mechanisms (6) are rotatably arranged on the fixing seats (3) through second rotating pieces (35), the jacking mechanisms (5) are provided with second sliding holes (50), the sliding pieces (33) penetrate through the second sliding holes (50), jacking parts (51) capable of jacking and opening the handrail frame (4) upwards are arranged on the jacking mechanisms (5), at least one third sliding hole (61) is formed in the extension mechanisms (6), the sliding pieces (33) penetrate through the third sliding holes (61), and extension mechanisms (6) are provided with extension parts (62) and two pedal rods (63) are connected between the two pedal parts (63); the universal castor is characterized in that the universal castor (2) is arranged right below the fixing seat (3), and the fixing seat (3) and the universal castor (2) are fixed on the bottom plate (1) through fixing pieces (7).

2. A pedal trolley according to claim 1, characterized in that: the fixing piece (7) comprises at least two pairs of bolts (71) and nuts (72), and at least two bolts (71) penetrate through the bottom plate (1) and the universal castor (2) to be fixed.

3. A pedal trolley according to claim 2, characterized in that: at least one bolt (71) is sleeved with a sleeve (73), the bottom plate (1) is provided with a mounting hole (11), the sleeve (73) is positioned in the mounting hole (11), and the length of the sleeve (73) is not greater than the height of the mounting hole (11).

4. A pedal pushchair according to claim 3, wherein: at least one of the mounting holes (11) is provided with a groove body (12), the end part of the bolt (71) is arranged in the groove body (12), and the top of the groove body (12) is provided with a sealing plug (13).

5. A pedal trolley according to claim 1, characterized in that: the rear end of the bottom plate (1) is provided with at least one rolling caster wheel (20), and the distance between the rolling caster wheel (20) and the rear end of the bottom plate (1) is one fifth to one third of the length of the bottom plate (1).

6. A pedal trolley according to claim 1, characterized in that: the jacking mechanism (5) comprises two first side plates (52), the second sliding holes (50) are formed in the first side plates (52), and the jacking parts (51) are formed in the first side plates (52).

7. A pedal trolley according to claim 1, characterized in that: the extension mechanism (6) comprises two second side plates (64), and the third sliding holes (61) are formed in the second side plates (64).

8. A pedal trolley according to claim 1, characterized in that: the jacking mechanism (5) is rotatably connected to the fixed seat (3) through a first rotating piece (31).

9. A pedal trolley according to claim 1, characterized in that: be equipped with buffer sheet (8) on fixing base (3), buffer sheet (8) are including being fixed in fixed part (81) on fixing base (3), connect respectively in first buffer part (82) and second buffer part (83) at fixed part (81) both ends, first buffer part (82) are along the direction downward sloping of keeping away from handrail frame (4), handrail frame (4) folding in-process can support and lean on first buffer part (82), second buffer part (83) are along the direction upward slope that is close to handrail frame (4), when handrail frame (4) are opened, can support and lean on second buffer part (83).

10. A pedal trolley according to claim 9, characterized in that: the ends of the first buffer part (82) and the second buffer part (83) are respectively provided with a bending part (84), and the handrail frame (4) can be propped against the connecting part of the bending parts (84).