CN216833865U - Trolley frame with hand push rod capable of being reversely positioned - Google Patents

Abstract

The utility model discloses a shallow frame of handspike location that can commutate, include the bottom sprag frame and connect the seat subassembly on the bottom sprag frame, the bottom sprag frame includes first supporting leg and second supporting leg, be equipped with first wheel subassembly and second wheel subassembly on first supporting leg and the second supporting leg respectively, first wheel subassembly and second wheel subassembly all have directional moving state and universal moving state, still rotate on the bottom sprag frame and be connected with the handspike, and still be equipped with the switching-over device that can change first wheel subassembly and second wheel subassembly moving state when the handspike rotates the switching-over between handspike and the bottom sprag frame, seat subassembly front side is equipped with first lock location, bottom sprag frame or seat subassembly rear side are equipped with the second lock location, still be equipped with on the handspike and lock the part on first lock location or second lock location. The utility model discloses the purpose is overcome prior art not enough, provides a simple structure, the convenient shallow frame of unblock switching-over.

Description

Trolley frame with hand push rod capable of being reversely positioned

[ technical field ] A method for producing a semiconductor device

The utility model relates to a bassinet field especially relates to a shallow frame of handspike reversible location.

[ background of the invention ]

The existing cart frame comprises a bottom support frame, a first wheel assembly, a second wheel assembly, a seat assembly and a hand push rod, wherein the bottom support frame comprises a first support leg and a second support leg which are connected in a rotating mode, the hand push rod is provided with a reversing device capable of controlling the first wheel assembly and the second wheel assembly to be in a directional moving state or a universal moving state and a locking device for locking the hand push rod between the first support leg and the second support leg, and the existing reversing device and the locking device are arranged at a joint between the first support leg and the second support leg, so that the cart frame is complex to operate during unlocking and is troublesome to unlock. The utility model provides a new reversing structure, which realizes the rotation reversing and reliable positioning of the handspike.

[ Utility model ] content

The utility model aims at overcoming the defects of the prior art, and providing a cart frame which has simple structure and convenient unlocking and reversing.

The utility model discloses a realize through following technical scheme:

the utility model relates to a trolley frame with a hand push rod capable of being positioned in a reversing way, which comprises a bottom support frame 1 and a seat component 2 connected on the bottom support frame 1, wherein the bottom support frame 1 comprises a first support leg 11 and a second support leg 12 connected on the first support leg 11 in a rotating way around a first axis A, the first support leg 11 and the second support leg 12 are respectively provided with a first wheel component 111 and a second wheel component 121, the first wheel component 111 and the second wheel component 121 both have a directional moving state and a universal moving state, the bottom support frame 1 is also rotatably connected with the hand push rod 3 around the first axis A, a reversing device 4 capable of changing the moving state of the first wheel component 111 and the second wheel component 121 when the hand push rod 3 rotates and reverses relative to the bottom support frame 1 is arranged between the hand push rod 3 and the bottom support frame 1, the front side of the seat component 2 is provided with a first locking and positioning 51, the rear side of the bottom support frame 1 or the seat assembly 2 is provided with a second locking position 52, the push rod 3 is further provided with a locking member 53 capable of locking the push rod on the first locking position 51 or the second locking position 52, when the push rod 3 is locked on the first locking position 51, the first wheel assembly 111 is in a directional moving state and the second wheel assembly 121 is in a universal moving state, and when the push rod 3 is locked on the second locking position 52, the first wheel assembly 111 is in a universal moving state and the second wheel assembly 121 is in a directional moving state.

The bottom support frame 1 is also connected with a support rod 6 extending above the second support leg 12 and a grab bar 7 connected to the support rod 6, and the second locking position 52 is arranged on the grab bar 7 or the support rod 6.

The seat assembly 2 comprises a seat portion 21 connected to the bottom support frame 1, a protruding positioning portion 211 is arranged on the front side of the seat portion 21, and the first locking portion 51 is arranged on the positioning portion 211.

The seat assembly 2 further comprises a seat portion 21 connected to the bottom support frame 1, a protruding positioning portion 211 is arranged on the seat portion 21, a supporting rod 6 is connected to the rear side of the seat portion 21, a grab rail 7 is connected to the supporting rod 6, the first locking portion 51 is arranged on the positioning portion 211, and the second locking portion 52 is arranged on the grab rail 7 or the supporting rod 6.

The reversing device 4 comprises a first locking component 41 which is arranged on the bottom support frame 1 and can lock the first support leg 11 and the first wheel component 111, a second locking component 42 which can lock the second support leg 12 and the second wheel component 121 is further arranged on the bottom support frame 1, and the hand push rod 3 is connected with a cam 43 which can change the locking state of the first locking component 41 and the second locking component 42 along with the rotation of the hand push rod 3.

The first wheel assembly 111 comprises a first wheel support 1111 movably connected to the first support leg 11 and a first wheel 1112 connected to the first wheel support 1111, the first locking assembly 41 comprises a first locking position 411 arranged on the first wheel support 1111, the first support leg 11 is provided with a first locking member 412 capable of sliding relative to the first support leg to be locked in or separated from the first locking position 411, the first support leg 11 is further slidably connected with a first sliding member 413 capable of abutting against the cam 43, the first support leg 11 is further provided with a first rotating shaft 415, a first pulling cable 414 wound around the first rotating shaft 415 and capable of enabling the first locking member 412 to be locked in or separated from the first locking position when the first sliding member 413 moves, a first return spring 416 capable of enabling the first locking member 412 to return is arranged between the first support leg 11 and the first locking member 412, the cam 43 is provided with a first concave edge 431 and a top pressing edge 432, and when the top pressing edge 432 and the first sliding member 413 are mutually pressed against each other, the hand push rod 3 and the second supporting leg 12 are at the same side, and the first sliding member 413 slides downwards to separate the first locking member 412 from the first locking position 411, and when the first concave edge 431 and the first sliding member 413 are mutually pressed against each other, the hand push rod 3 and the first supporting leg 11 are at the same side, and the first sliding member 413 slides upwards to enable the first locking member 412 to be clamped into the first locking position 411.

The second wheel assembly 121 includes a second wheel support 1211 movably connected to the second support leg 12 and a second wheel 1212 connected to the second wheel support 1211, the second locking assembly 42 includes a second locking position 421 disposed on the second wheel assembly 121, the second support leg 12 is provided with a second locking member 422 capable of sliding relative to the second locking member 422 and being locked in or separated from the second locking position 421, the second support leg 12 is further slidably connected with a second sliding member 423 capable of abutting against the cam 43, the second support leg 12 is further provided with a second rotating shaft 425, a second pulling cable 424 wound around the second rotating shaft 425 and capable of enabling the second locking member 422 to be locked in or separated from the second locking position 421 when the second sliding member 423 is movable is connected between the second sliding member 423 and the second locking member 422, a second return spring 426 capable of returning the second locking member 422 is disposed between the second support leg 12 and the second locking member 422, the cam 43 is further provided with a second concave edge 433, and when the pressing edge 432 and the second sliding member 423 are abutted against each other, the hand push rod 3 and the second supporting leg 12 are at the same side, and the second sliding member 423 slides downwards to separate the second locking member 422 from the second locking position 421, and when the second concave edge 433 and the second sliding member 423 are abutted against each other, the hand push rod 3 and the first supporting leg 11 are at the same side, and the second sliding member 423 slides upwards to enable the second locking member 422 to be locked into the second locking position 421.

The first lock position 51 is a first positioning protrusion provided on the positioning portion 211, and the second lock position 52 is a second positioning protrusion provided on the grab bar 7 or the stay 6.

Compared with the prior art, the utility model discloses there is following advantage:

1. when an adult pushes the stroller frame towards the back of the child, the push rod on the stroller frame is positioned on one side of the second supporting leg, and the locking component on the push rod is matched with the second locking position to lock the push rod on the side, so that the first wheel assembly is in a universal moving state and the second wheel assembly is in a directional moving state; when the adult needs to push away the shallow frame towards children, earlier with locking part and the unblock of second lock location on the handspike, then promote the handspike and rotate to seat subassembly front side, and when the handspike rotated, the switching-over device activity makes the second wheel subassembly change to universal removal state by directional removal state, first wheel subassembly changes to directional removal state by universal removal state, locking part and the first lock location fit on the handspike lock the handspike in seat subassembly front side, the adult faces the children in the seat subassembly and pushes away this moment, make things convenient for the adult to look after children.

2. Compare in current shallow frame with switching-over fixing device and locking device setting in one, the utility model discloses shallow frame separately sets up switching-over device and locking device, can reduce the joint volume of shallow frame to make switching-over device and locking device's unlocking structure simpler, more convenience of customers' operation, and the location of handspike is more reliable.

[ description of the drawings ]

Fig. 1 is a perspective view of the cart frame of the present invention;

fig. 2 is a side view of the cart frame of the present invention;

fig. 3 is a perspective view of the push rod of the cart frame of the present invention facing another direction;

fig. 4 is a side view of the push rod of the cart frame of the present invention facing in another direction;

fig. 5 is a using state diagram of the cart frame of the present invention;

fig. 6 is an exploded view of the cart frame of the present invention;

fig. 7 is a cross-sectional view of the cart frame of the present invention with the first wheel assembly in a gimbal motion state and the second wheel assembly in a directional motion state;

fig. 8 is a cross-sectional view of the cart frame of the present invention with the first wheel assembly in a directionally moving state and the second wheel assembly in a universally moving state;

fig. 9 is one of the perspective views of the cam in the cart frame of the present invention;

fig. 10 is a second perspective view of the cam in the cart frame according to the present invention.

[ detailed description ] A

The invention will be further described with reference to the accompanying drawings:

as shown in figures 1 to 10, the utility model provides a trolley frame with a hand push rod capable of being positioned in a reversing way, which comprises a bottom support frame 1 and a seat component 2 connected on the bottom support frame 1, wherein the bottom support frame 1 comprises a first support leg 11 and a second support leg 12 connected on the first support leg 11 in a rotating way around a first axis A, the first support leg 11 and the second support leg 12 are respectively provided with a first wheel component 111 and a second wheel component 121, the first wheel component 111 and the second wheel component 121 both have a directional moving state and a universal moving state, the bottom support frame 1 is also rotatably connected with a hand push rod 3 around the first axis A, a reversing device 4 capable of changing the moving state of the first wheel component 111 and the second wheel component 121 when the hand push rod 3 rotates and reverses relative to the bottom support frame 1 is also arranged between the hand push rod 3 and the bottom support frame 1, the front side of the seat assembly 2 is provided with a first locking position 51, the rear side of the bottom support frame 1 or the seat assembly 2 is provided with a second locking position 52, the push rod 3 is further provided with a locking component 53 capable of locking the push rod 3 on the first locking position 51 or the second locking position 52, when the push rod 3 is locked on the first locking position 51, the first wheel assembly 111 is in a directional moving state and the second wheel assembly 121 is in a universal moving state, and when the push rod 3 is locked on the second locking position 52, the first wheel assembly 111 is in a universal moving state and the second wheel assembly 121 is in a directional moving state. When the first wheel assembly 111 and the second wheel assembly 121 are in the universal movement state, the first wheel assembly 111 can rotate 360 degrees in the horizontal plane relative to the first support leg 11, and the second wheel assembly 121 can roll 360 degrees in the horizontal plane relative to the second support leg 12. When the first wheel assembly 111 and the second wheel assembly 121 are in the directional moving state, the first wheel assembly 111 and the first support leg 11 are locked, the first wheel assembly 111 can roll only in the longitudinal plane, the second wheel assembly 121 and the second support leg 12 are locked, and the second wheel assembly 121 can roll only in the longitudinal plane.

When the adult pushes the stroller frame towards the back of the child, the push rod 3 on the stroller frame is positioned on one side of the second support leg 12, and the locking component 53 on the push rod 3 is matched with the second locking position 52 to lock the push rod 3 on the side, so that the first wheel assembly 111 is in a universal moving state and the second wheel assembly 121 is in a directional moving state; when an adult needs to push the stroller frame towards a child, the locking component 53 and the second locking component 52 on the hand push rod 3 are unlocked, then the hand push rod 3 is pushed to rotate towards the front side of the seat component 2, when the hand push rod 3 rotates, the reversing device 4 moves, so that the second wheel component 121 is changed from the directional movement state to the universal movement state, the first wheel component 111 is changed from the universal movement state to the directional movement state, the locking component 53 on the hand push rod 3 is matched with the first locking component 51 to lock the hand push rod 3 at the front side of the seat component 2, at the moment, the adult pushes the stroller frame towards the child in the seat component 2, and the adult can conveniently look after the child. Compare in current shallow frame with switching-over fixing device and locking device setting in one, the utility model discloses shallow frame separately sets up switching-over device and locking device, can reduce the joint volume of shallow frame and make switching-over device and locking device's unlocking structure simpler, more convenience of customers operation.

As shown in fig. 3, the bottom bracket 1 is further connected with a support rod 6 extending above the second support leg 12 and a grab bar 7 connected to the support rod 6, and the second lock position 52 is provided on the grab bar 7 or the support rod 6.

As shown in fig. 2, the seat assembly 2 includes a seat portion 21 connected to the bottom bracket 1, a protruding positioning portion 211 is provided on the front side of the seat portion 21, and the first locking portion 51 is provided on the positioning portion 211. The second locking position 52 and the first locking position 51 are arranged in front of and behind each other, are locked separately, are convenient to lock and unlock and play a role in positioning.

As shown in fig. 6, the reversing device 4 includes a first locking assembly 41 disposed on the bottom bracket 1 and capable of locking the first support leg 11 and the first wheel assembly 111, the bottom bracket 1 is further provided with a second locking assembly 42 capable of locking the second support leg 12 and the second wheel assembly 121, and the push rod 3 is connected with a cam 43 capable of changing the locking state of the first locking assembly 41 and the second locking assembly 42 along with the rotation of the push rod 3. When the locking member 53 is unlocked separately from the first and second locking positions 51 and 52, the handle bar 3 is pushed such that the cam 43 rotates following the handle bar 3 and changes the locking state of the first and second locking members 41 and 42.

As shown in fig. 6 to 8, the first wheel assembly 111 includes a first wheel bracket 1111 movably connected to the first support leg 11 and a first wheel 1112 connected to the first wheel bracket 1111, the first locking assembly 41 includes a first locking portion 411 disposed on the first wheel bracket 1111, the first support leg 11 is provided with a first locking member 412 capable of sliding relative to the first support leg to be locked in or unlocked from the first locking portion 411, the first support leg 11 is further slidably connected with a first sliding member 413 capable of abutting against the cam 43, the first support leg 11 is further provided with a first rotating shaft 415, a first pulling cable 414 wound around the first rotating shaft 415 and capable of locking or unlocking the first locking member 412 in the first locking position 411 when the first sliding member 413 is moved is connected between the first support leg 11 and the first locking member 412, a first return spring 416 capable of returning the first locking member 412 is disposed between the first support leg 11 and the first locking member 412, the cam 43 is provided with a first concave edge 431 and a top pressing edge 432, and when the top pressing edge 432 and the first sliding member 413 are mutually pressed against each other, the hand push rod 3 and the second supporting leg 12 are at the same side, and the first sliding member 413 slides downwards to separate the first locking member 412 from the first locking position 411, and when the first concave edge 431 and the first sliding member 413 are mutually pressed against each other, the hand push rod 3 and the first supporting leg 11 are at the same side, and the first sliding member 413 slides upwards to enable the first locking member 412 to be clamped into the first locking position 411.

When the first concave edge 431 and the first sliding member 413 abut against each other, the first sliding member 413 slides upwards relative to the first supporting leg 11, the first rotating shaft 415 releases the first cable 414, at this time, the first cable 414 is in a relaxed state, the first return spring 416 pushes the first locking member 412 to return to the first locking position 411, at this time, the first wheel bracket 1111 and the first supporting leg 11 are in a locked state, and the first wheel assembly 111 can only perform directional movement. When the cam 43 rotates, the first sliding member 413 disengages from the first concave edge 431 and abuts against the top pressing edge 432, the first sliding member 413 slides downward relative to the first support leg 11, the first rotating shaft 415 makes the first cable 414 in a tightened state, the first locking member 412 is pulled to slide upward relative to the first support leg 11 and disengage from the first locking position 411, at this time, the first return spring 416 is compressed, the first wheel bracket 1111 and the first support leg 11 are unlocked, and the first wheel assembly 111 can perform universal movement.

As shown in fig. 6 to 8, the second wheel assembly 121 includes a second wheel support 1211 movably connected to the second support leg 12 and a second wheel 1212 connected to the second wheel support 1211, the second locking assembly 42 includes a second locking position 421 provided on the second wheel assembly 121, the second support leg 12 is provided with a second locking member 422 capable of sliding relative to the second locking member 422 to be locked in or unlocked from the second locking position 421, the second support leg 12 is further slidably connected with a second sliding member 423 capable of abutting against the cam 43, the second support leg 12 is further provided with a second rotating shaft 425, a second pulling cable 424 wound around the second rotating shaft 425 and capable of enabling the second locking member 422 to be locked in or unlocked from the second locking position 421 when the second sliding member 423 is moved, a second return spring 426 capable of returning the second locking member 422 is provided between the second support leg 12 and the second locking member 422, the cam 43 is further provided with a second concave edge 433, and when the pressing edge 432 and the second sliding member 423 are abutted against each other, the hand push rod 3 and the second supporting leg 12 are at the same side, and the second sliding member 423 slides downwards to separate the second locking member 422 from the second locking position 421, and when the second concave edge 433 and the second sliding member 423 are abutted against each other, the hand push rod 3 and the first supporting leg 11 are at the same side, and the second sliding member 423 slides upwards to enable the second locking member 422 to be locked into the second locking position 421.

When the first concave edge 431 and the first sliding member 413 abut against each other, the push rod 3 is locked at the side of the first supporting leg 11, the first wheel bracket 1111 and the first supporting leg 11 are locked with each other, the pressing edge 432 on the cam 43 abuts against the second sliding member 423, the second sliding member 423 slides upward relative to the second supporting leg 12, the second rotating shaft 425 enables the second pulling rope 424 to be in a tightened state, the second locking member 422 is pulled to slide upward relative to the second supporting leg 12 and disengage from the second locking position 421, at this time, the second return spring 426 is in a compressed state, the second wheel bracket 1211 and the second supporting leg 12 are unlocked, the second wheel assembly 121 can perform universal movement, and the first wheel assembly 111 can only perform universal movement.

When the hand push rod 3 is operated and then rotates to one side of the second support leg 12 from the first support leg 11, the cam 43 is driven by the hand push rod 3 to rotate, the first sliding piece 413 and the abutting edge 432 abut against each other, the first wheel support 1111 and the first support leg 11 are unlocked, the second sliding piece 423 abuts against the second concave edge 433 on the cam 43 at the moment, the second rotating shaft 425 releases the second pulling cable 424, the second pulling cable 424 is in a loose state, the second return spring 426 pushes the second locking piece 422 to return and is clamped into the second locking position 421, the second wheel support 1211 and the second support leg 12 are in a locked state at the moment, the second wheel assembly 121 can only perform directional movement, and the first wheel assembly 111 can perform universal movement.

As shown in fig. 1 and 3, the first lock position 51 is a first positioning protrusion provided on the positioning portion 211, and the second lock position 52 is a second positioning protrusion provided on the grab bar 7 or the stay 6. The locking part 53 is an existing sliding sleeve lock, and is unlocked after sliding to be separated from the first positioning bulge and the second positioning bulge, and the hand push rod 3 can rotate relative to the bottom support frame 1 to be reversed.

Of course, the seat assembly 2 of the present invention further includes a seat portion 21 connected to the bottom support frame 1, the seat portion 21 on be equipped with convex positioning portion 211, the rear side of the seat portion 21 be connected with the stay bar 6, the stay bar 6 on be connected with the grab rail 7, the first lock location 51 on locate the positioning portion 211, just the second lock location 52 on locate the grab rail 7 or the stay bar 6. The second locking position 52 and the first locking position 51 are arranged in front of and behind and can be respectively locked with the locking component 53, so that unlocking and unlocking of an adult are facilitated, and the second locking position 52 and the first locking position 51 also play a role in positioning.

Claims (8)

1. The utility model provides a shallow frame of handspike reversible location, includes bottom sprag frame (1) and connects seat subassembly (2) on bottom sprag frame (1), bottom sprag frame (1) including first supporting leg (11) and around first axis (A) rotate second supporting leg (12) of connecting on first supporting leg (11), first supporting leg (11) and second supporting leg (12) on be equipped with first wheel subassembly (111) and second wheel subassembly (121) respectively, first wheel subassembly (111) and second wheel subassembly (121) all have directional moving state and universal moving state, its characterized in that: the seat is characterized in that a hand push rod (3) is further rotatably connected to the bottom support frame (1) around a first axis (A), a reversing device (4) capable of changing the moving states of the first wheel assembly (111) and the second wheel assembly (121) when the hand push rod (3) rotates and reverses relative to the bottom support frame (1) is further arranged between the hand push rod (3) and the bottom support frame (1), a first locking position (51) is arranged on the front side of the seat assembly (2), a second locking position (52) is arranged on the rear side of the bottom support frame (1) or the seat assembly (2), a locking component (53) capable of locking the hand push rod (3) on the first locking position (51) or the second locking position (52) is further arranged on the hand push rod, and when the hand push rod (3) is locked on the first locking position (51), the first wheel assembly (111) is in a directional moving state and the second wheel assembly (121) is in a universal moving state, when the hand push rod (3) is locked at the second locking position (52), the first wheel assembly (111) is in a universal movement state and the second wheel assembly (121) is in a directional movement state.

2. The cart frame with the reversing positioning function of the hand push rod as claimed in claim 1, wherein: the bottom support frame (1) on still be connected with the vaulting pole (6) that extend towards second supporting leg (12) top and connect in handrail pole (7) on vaulting pole (6), second lock position (52) locate on handrail pole (7) or vaulting pole (6).

3. The cart frame with the reversing positioning function of the hand push rod as claimed in claim 2, wherein: the seat assembly (2) comprises a seat part (21) connected to the bottom support frame (1), a protruding positioning part (211) is arranged on the front side of the seat part (21), and the first locking part (51) is arranged on the positioning part (211).

4. The cart frame with the hand push rod capable of being positioned in a reversing manner according to claim 1, is characterized in that: seat subassembly (2) still including connecting seat portion (21) on bottom sprag frame (1), seat portion (21) on be equipped with convex location portion (211), seat portion (21) rear side be connected with vaulting pole (6), vaulting pole (6) on be connected with handrail pole (7), first lock location (51) locate on location portion (211), just second lock location (52) locate on handrail pole (7) or vaulting pole (6).

5. The cart frame with the reversing positioning function of the hand push rod as claimed in claim 1, wherein: reversing arrangement (4) including locate bottom sprag frame (1) and can lock first supporting leg (11) and first wheel subassembly (111) first locking subassembly (41), bottom sprag frame (1) on still be equipped with second locking subassembly (42) that can lock second supporting leg (12) and second wheel subassembly (121), handspike (3) on be connected with cam (43) that can follow handspike (3) and rotate and change first locking subassembly (41) and second locking subassembly (42) locking state.

6. The cart frame with the hand push rod capable of being positioned in a reversing manner according to claim 5, is characterized in that: first wheel subassembly (111) including swing joint first round support (1111) on first support leg (11) and connect first round (1112) on first round support (1111), first locking subassembly (41) including locating first block position (411) on first round support (1111), first support leg (11) on be equipped with and slide relatively it and block in or break away from first block position (411) first block (412), first support leg (11) on still sliding connection have first slider (413) that can lean against with cam (43), first support leg (11) on still be equipped with first pivot (415), first slider (413) and first block (412 between be connected with around on first pivot (415) and can make first block (412) block in or break away from first block position (411) first block (414) of cable when first slider (413) activity, first supporting leg (11) and first card latch piece (412) between be equipped with first reset spring (416) that can make first card latch piece (412) reset, cam (43) on be equipped with first concave side (431) and roof pressure limit (432), and when roof pressure limit (432) and first slider (413) when leaning on each other, handspike (3) and second supporting leg (12) homonymy and first slider (413) slide down and make first card latch piece (412) break away from first card lock position (411), and when first concave side (431) and first slider (413) leaned on each other, handspike (3) and first supporting leg (11) homonymy and first slider (413) upwards slide and make first card latch piece (412) block into in first card lock position (411).

7. The cart frame with the reversing positioning function of the hand push rod as claimed in claim 6, wherein: the second wheel assembly (121) comprises a second wheel support (1211) movably connected to the second supporting leg (12) and a second wheel (1212) connected to the second wheel support (1211), the second locking assembly (42) comprises a second locking position (421) arranged on the second wheel assembly (121), a second locking piece (422) capable of sliding relative to the second locking position to be clamped into or separated from the second locking position (421) is arranged on the second supporting leg (12), a second sliding piece (423) capable of abutting against the cam (43) is further connected to the second supporting leg (12) in a sliding mode, a second rotating shaft (425) is further arranged on the second supporting leg (12), a second cable (424) which is wound on the second rotating shaft (425) and enables the second locking piece (422) to be clamped into or separated from the second locking position (421) when the second sliding piece (423) moves is connected between the second sliding piece (423) and the second locking piece (422), second supporting leg (12) and second card latch spare (422) between be equipped with and make second card latch spare (422) second reset spring (426) that reset, cam (43) on still be equipped with second concave side (433), and when roof pressure limit (432) and second slider (423) when leaning on each other, handspike (3) and second supporting leg (12) homonymy and second slider (423) slide down and make second card latch spare (422) break away from second card lock position (421), and when second concave side (3) and second slider (423) lean on each other, handspike (3) and first supporting leg (11) homonymy and second slider (423) upwards slide and make second card latch spare (422) block go into to second card lock position (421).

8. The cart frame with the hand push rod capable of being positioned in a reversing manner according to claim 4, is characterized in that: the first locking position (51) is a first positioning protrusion arranged on the positioning part (211), and the second locking position (52) is a second positioning protrusion arranged on the grab bar (7) or the stay bar (6).

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