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CN-122009303-A - Cart skeleton

CN122009303ACN 122009303 ACN122009303 ACN 122009303ACN-122009303-A

Abstract

The invention discloses a cart framework, which comprises a bottom support frame, wherein the bottom support frame comprises a first supporting leg, a second supporting leg is rotatably connected to the first supporting leg around a first axis, wheels are arranged at the lower ends of the second supporting leg and the first supporting leg, a push rod assembly is rotatably connected to the bottom support frame around a second axis, a linkage assembly capable of driving the second supporting leg to rotate towards the first supporting leg when the push rod assembly rotates towards the first supporting leg is arranged between the push rod assembly and the second supporting leg, the linkage assembly comprises a linkage rod rotatably connected with the push rod assembly around a third axis, the third axis deviates from the second axis, and the linkage rod is in sliding fit with the second supporting leg so that the second supporting leg is driven to rotate relative to the first supporting leg through the linkage rod when the push rod assembly rotates relative to the first supporting leg. The invention has simple structure and flexible folding.

Inventors

  • PING ZHOU

Assignees

  • 中山市泽泰日用制品有限公司

Dates

Publication Date
20260512
Application Date
20260324

Claims (10)

  1. 1. The utility model provides a cart framework can change from the expansion state into folding state after locking device unblock, its characterized in that includes bottom sprag frame (1), bottom sprag frame (1) include first landing leg (11), first landing leg (11) on be connected with second landing leg (12) around first axis (A) rotation, second landing leg (12) and first landing leg (11) lower extreme all be equipped with wheel (13), bottom sprag frame (1) on be connected with push rod assembly (2) around second axis (B) rotation, push rod assembly (2) and second landing leg (12) between be equipped with and can drive second landing leg (12) to first landing leg (11) rotation when closing in to first landing leg (11) linkage subassembly (3), linkage subassembly (3) include around third axis (C) and push rod assembly (2) rotation be connected linkage pole (31), third axis (C) skew second axis (B) rotation be connected with push rod assembly (12) and second landing leg (12) relative rotation when making first landing leg (11) rotate relative push rod assembly (31).
  2. 2. The cart frame according to claim 1, wherein the push rod assembly (2) comprises a lower push rod (21) rotatably connected with the bottom support frame (1) around a second axis (B), a protruding portion (23) protruding to the outside of the lower push rod (21) is provided on the lower push rod (21), and the link rod (31) is rotatably connected with the protruding portion (23) around a third axis (C).
  3. 3. The cart frame according to claim 1, wherein the second leg (12) has a mating groove (121) at an upper end thereof, and the link lever (31) is inserted into the mating groove (121) and is capable of sliding back and forth in the mating groove (121).
  4. 4. The cart frame according to claim 1, wherein the first leg (11) comprises a leg rod (111), the wheel (13) is disposed at the lower end of the leg rod (111), the fixing base (112) is disposed at the upper end of the leg rod (111), the second leg (12) is rotatably connected to the fixing base (112) around the first axis (A), and the push rod assembly (2) is rotatably connected to the fixing base (112) around the second axis (B).
  5. 5. The cart frame according to claim 4, wherein the fixing base (112) is provided with a receiving groove (113), and the lower end of the push rod assembly (2), the upper end of the second leg (12) and the linkage rod (31) are disposed in the receiving groove (113).
  6. 6. The cart frame as set forth in claim 4, wherein the upper end of the second leg (12) is fixedly connected with a positioning seat (14), a first positioning surface (41) is disposed on the positioning seat (14), and a second positioning surface (42) abutting against the first positioning surface (41) when the cart frame is in the unfolded state is disposed at the lower end of the push rod assembly (2).
  7. 7. The cart framework of claim 4, wherein the inner side of the fixed seat (112) is also rotatably connected with a seat frame (5), the seat frame (5) comprises a connecting seat (51) rotatably connected with the fixed seat (112), and the connecting seat (51) is provided with a seat supporting rod (52).
  8. 8. The cart frame according to claim 7, wherein the connecting base (51) is provided with a third positioning surface (43), and the fixing base (112) is provided with a fourth positioning surface (44) abutting against the third positioning surface (43) when the cart frame is in the unfolded state.
  9. 9. The cart frame according to claim 7, wherein the locking device comprises a sliding block (61) slidably arranged at the lower end of the push rod assembly (2), the sliding block (61) is provided with a clamping block (62), the fixing seat (112) is provided with a first clamping hole (63) which can be clamped with or separated from the clamping block (62), the connecting seat (51) is provided with a second clamping hole (64) which can be clamped with or separated from the clamping block (62), the push rod assembly (2) is internally provided with a driving component (7) which can drive the sliding block (61) to be separated from the first clamping hole (63) and the second clamping hole (64), and a reset spring (65) which can push the sliding block (61) to slide and reset is arranged between the push rod assembly (2) and the sliding block (61).
  10. 10. The cart frame according to claim 9, wherein the push rod assembly (2) comprises a lower push rod (21) rotatably connected with the bottom support frame (1) around a second axis (B), an upper push rod (22) capable of extending and contracting in the lower push rod (21) is arranged in the lower push rod, the driving component (7) comprises a driving rod (71) arranged at the lower end of the upper push rod (22), a first inclined surface (72) is arranged on the driving rod (71), a second inclined surface (73) matched with the first inclined surface (72) is arranged on the sliding block (61), and when the upper push rod (22) is retracted inwards towards the lower push rod (21), the first inclined surface (72) pushes the second inclined surface (73) to enable the sliding block (61) to slide, and then the clamping block (62) is separated from the first clamping hole (63) and the second clamping hole (64).

Description

Cart skeleton [ Technical field ] skeleton The invention relates to a cart framework. Background Carts are common products on the market today, such as child carts, pet carts, etc. The existing cart framework can be unfolded or folded generally, and is convenient to carry or store in an unfolded state for users to use. The present invention provides a novel cart framework different from the prior art, which has various cart framework structures in the market and different folding actions and folding principles. Disclosure of Invention The invention aims to overcome the defects of the prior art and provides the cart framework which is simple in structure and flexible to fold. The invention is realized by the following technical scheme: The utility model provides a shallow skeleton can change folding state from the expansion state after locking device unblock, includes the bottom sprag frame, the bottom sprag frame include first landing leg, first landing leg on rotate around first axis and be connected with the second landing leg, second landing leg and first landing leg lower extreme all be equipped with the wheel, the bottom sprag frame on rotate around the second axis and be connected with push rod assembly, push rod assembly and second landing leg between be equipped with and can drive the second landing leg and rotate the linkage subassembly that draws close to first landing leg when push rod assembly rotates to first landing leg, the linkage subassembly include the gangbar of being connected around third axis and push rod assembly rotation, the skew second axis of third axis, gangbar and second landing leg sliding fit make push rod assembly drive the relative first landing leg of second through the gangbar when rotating. The push rod assembly comprises a lower push rod which is rotationally connected with the bottom supporting frame around a second axis, a protruding part protruding towards the outer side of the lower push rod is arranged on the lower push rod, and the linkage rod is rotationally connected onto the protruding part around a third axis. The upper end of the second supporting leg is provided with a matching groove, and the linkage rod is inserted into the matching groove and can slide back and forth in the matching groove. The first landing leg comprises a landing leg rod, the lower end of the landing leg rod is provided with wheels, the upper end of the landing leg rod is provided with a fixing seat, the second landing leg is rotationally connected to the fixing seat around a first axis, and the push rod assembly is rotationally connected to the fixing seat around a second axis. The fixing seat on be equipped with the holding tank, push rod subassembly lower extreme, second landing leg upper end and gangbar set up in the holding tank. The upper end of the second supporting leg is fixedly connected with a positioning seat, a first positioning surface is arranged on the positioning seat, and the lower end of the push rod assembly is provided with a second positioning surface which is abutted against the first positioning surface when the framework of the cart is in an unfolding state. The inner side of the fixed seat is also rotationally connected with a seat frame, the seat frame comprises a connecting seat rotationally connected with the fixed seat, and the connecting seat is provided with a seat supporting rod. The connecting seat is provided with a third positioning surface, and the fixing seat is provided with a fourth positioning surface which is abutted against the third positioning surface when the framework of the cart is in an unfolded state. The locking device comprises a sliding block which is slidably arranged at the lower end of the push rod assembly, the sliding block is provided with a clamping block, the fixing seat is provided with a first clamping hole which can be clamped or separated with the clamping block, the connecting seat is provided with a second clamping hole which can be clamped or separated with the clamping block, the push rod assembly is also internally provided with a driving part which can drive the sliding block to separate from the first clamping hole and the second clamping hole, and a reset spring which can push the sliding block to slide and reset is arranged between the push rod assembly and the sliding block. The push rod assembly comprises a lower push rod which is rotationally connected with the bottom supporting frame around a second axis, an upper push rod which can stretch out and draw back in the lower push rod is arranged in the lower push rod, the driving component comprises a driving rod which is arranged at the lower end of the upper push rod, a first inclined surface is arranged on the driving rod, a second inclined surface which is matched with the first inclined surface is arranged on the sliding block, and when the upper push rod is contracted inwards towards the lower push rod, the first inclined surface pushes the second inclined su