CN201161607Y - Folding structure for baby carriage - Google Patents

Abstract

The utility model relates to a baby stroller, and in particular to a baby stroller folding structure, comprising a handrail rod, a push rod, a rear foot rod, and a transition rod; the top end of the rear foot rod is pivotally connected to the handrail rod; the bottom end of the push rod is pivotally connected to the rear end of the handrail rod, and the push rod also has an extension section, which is located below the pivot point; one end of the transition rod is pivotally connected to the rear foot rod, and the other end of the transition rod is pivotally connected to the bottom end of the extension section of the push rod; and the transition rod is located on the inner side of the rear foot rod and the extension section of the push rod; the rear foot rod has a snap-fitting hole, which is arranged between the pivot point between the rear foot rod and the handrail rod, and the pivot point with the transition rod; the utility model provides a baby stroller folding structure that can realize locking and unlocking operations in two states, namely, unfolding and folding, by single-handed operation.

Description

Stroller foldable structure

technical field

The utility model relates to a baby carriage, in particular to a baby carriage receiving structure.

Background technique

The known stroller retractable structure adopts a retractable joint and a locking mechanism. When the stroller is in the unfolded state, the stroller is kept locked by the engaging mechanism; when the stroller needs to be folded, the stroller is A control device unlocks the engaging mechanism to realize the car receiving; for example, the baby carriage disclosed in the Chinese utility model patent document CN2315002Y belongs to this car receiving structure. Although the known car receiving structure can make the car receiving process convenient, a locking action must be performed after the car is received so that the baby carriage can remain locked; generally, the operator hangs a hook made of an iron plate with his hands. On the other hand, when the conventional stroller storage structure needs to unfold the stroller, the operator also needs to manually disengage the aforesaid calendar hook in order to unfold the stroller. When using a stroller, the operator often needs to hold the baby in one hand, and perform the unfolding or folding operation with the other hand; convenient.

Utility model content

The purpose of the utility model is to overcome the disadvantages of the above-mentioned prior art and provide a baby carriage retractable structure that can realize locking and unlocking operations in two states of unfolding and retracting respectively by one-handed operation.

The purpose of this utility model can be realized through the following technical solutions:

A folding structure for a stroller, characterized in that it includes a handrail bar, a push bar, a rear foot bar, and a transition bar; the top end of the rear foot bar is pivotally connected to the armrest bar; the bottom end of the push bar is pivotally connected to the The rear end of the armrest rod, the push rod also has an extension section, the extension section is located below the pivot point; one end of the transition rod is pivotally connected to the rear foot rod, and the other end of the transition rod is pivotally connected to The bottom end of the extension section of the push rod; and the transition rod is located on the inner side of the rear foot rod and the extension section of the push rod; the rear foot rod has an engaging hole, and the engaging hole is arranged on the Between the pivot point of the rear foot bar and the armrest bar, and the pivot point of the transition bar; the transition bar has an engaging groove, and the engagement slot is arranged at the pivot point of the transition bar and the rear foot bar , and between the pivot point with the extension of the push rod; the extension of the push rod has a key and a bayonet; the extension of the push rod is a hollow tube, and the key is set In the tube body of the extension section and exposed outside the bottom end of the extension section, the bayonet pin is set on a sleeve, and the sleeve sleeve is set on the extension section of the push rod, and the bayonet pin is radially installed on the The sleeve, the extension section, the key, and the extension section of the push rod is passed through by the card shaft is a pair of long holes, the length direction of the long hole is the axis of the extension section To; the tube body of the extension section is also provided with an elastic member, the direction of action of the elastic force of the elastic member is to make the key protrude from the tube body, and the bayonet pin is close to the bottom end of the extension section; A pull wire is also arranged in the extension section of the push rod, one end of the pull wire is connected to the key, that is, the key is located at one end inside the extension section of the push rod, and the other end of the pull wire is connected to a traction mechanism The folding structure has two states of unfolding and folding; when the folding structure is in the unfolded state, the end of the transition rod that is not pivotally connected with the rear foot rod is close to the locking hole, and the locking key is set In the clamping hole, in this state, the extended section of the armrest bar, the rear leg bar, and the push bar forms a triangle; when the retractable structure is in the retracted state, the transition bar is not connected One end of the pivoted rear leg rod is far away from the card hole, and the bayonet pin is fixed in the card slot. In this state, the armrest rod, the rear leg rod, the transition rod, and the push rod The extensions form a quadrilateral.

Stroller folding structure, characterized in that the folding structure also includes a front foot bar, a seat tube, and a second transition bar, the top end of the front foot bar is pivotally connected to the armrest bar, and the front end of the seat tube is pivotally connected to On the front foot rod, one end of the second transition rod is pivotally arranged on the seat tube, and the other end of the second transition rod is pivotally connected to the bottom end of the extension section of the push rod; the armrest rod, The extension section of the push rod, the front foot bar, the seat tube, and the second transition bar form a pentagon.

The folding structure of the stroller is characterized in that the elastic member is a compression spring, the compression spring is arranged in the tube body of the extension section of the push rod, and is sleeved on the pull wire, and one end of the compression spring It abuts against the locking key, and the other end abuts against the pin body in the tube passing through the extension section of the push rod.

The folding structure of the stroller is characterized in that the traction mechanism is a pressing device arranged on the top of the push rod; the pressing device has a pressing block, and when the pressing block is in a depressed state, the pull wire It is in a pulled state; when the pressing block is in a released state, the pull wire is in a natural state.

The folding structure of the stroller is characterized in that the push rod is in the shape of a reversed "U", and the pressing device is arranged at the center of the top of the reversed "U".

The stroller retractable structure involved in the utility model, when it is in the expanded state, the end of the transition rod that is not pivotally connected with the rear foot rod is close to the clamping hole, and the clamping key is clamped in the clamping hole. In this state, the armrest bar, the rear foot bar, and the extension section of the push rod form a triangle, and the key of the extension section of the push bar and the engaging hole of the rear foot bar keep the open angle of the triangle locked, so that The stroller remains in a locked state; when the retractable structure is in the retracted state, the end of the transition rod that is not pivotally connected to the rear foot rod is away from the card hole, and the bayonet pin is locked in the card slot, in this state Next, the armrest bar, the rear foot bar, the transition bar, and the extension section of the push rod form a quadrilateral, and the two sides of the quadrilateral are locked by the bayonet of the extension section of the push bar and the slot of the transition bar. Thereby keep the baby carriage in the folded state; the card key of the baby carriage to keep the expanded state and the bayonet pin of the baby carriage to keep the folded state are controlled by a pull wire at the same time, and the other end of the pull wire is connected to a traction mechanism, so the baby carriage of the present utility model Compared with the prior art, the retractable structure only needs to operate a traction mechanism to realize locking and unlocking under two states of unfolding and retracting respectively, which has the effect of being convenient to use.

Description of drawings

Fig. 1 is a schematic diagram of the first embodiment of the utility model in an unfolded state.

Fig. 2 is a schematic diagram of the first embodiment of the utility model in a folded state.

Fig. 3 is a partially enlarged view of A in Fig. 2 .

Fig. 4 is a schematic diagram of the transition rod of the first embodiment of the present invention.

Fig. 5 is an exploded schematic view of the push rod extension section of the first embodiment of the new production model.

Detailed ways

The utility model will be described in further detail below in conjunction with the accompanying drawings. The first embodiment of the present utility model is a foldable four-wheel baby carriage, which includes a baby carriage folding structure, referring to Figures 1 to 5, the baby carriage folding structure includes a handrail 103, push rod 104, rear foot rod 102, transition rod 106; the top end of described rear foot rod 102 is pivotally connected to described handrail rod 103; the bottom end of described push rod 104 is pivotally connected to the rear end of described handle rod 103, so The push rod 104 also has an extension section 1041, the extension section 1041 is located below the pivot point; one end of the transition bar 106 is pivotally connected to the rear foot bar 102, and the other end of the transition bar 106 is pivotally connected to the The bottom end of the extension section 1041 of the push rod 104; and the transition rod 106 is located on the inner side of the rear foot bar 102 and the extension section 1041 of the push rod 104; the rear foot bar 102 has an engaging hole, see Fig. 2 As shown in Fig. 3, in this embodiment, the rear foot frame 102 is provided with a plastic seat 108 by riveting, and the engaging hole is provided on the plastic seat 108; between the joints, and the pivot point with the transition rod 106; the transition rod 106 has an engaging groove 1061, and the engaging groove 1061 is arranged at the pivot joint point between the transition rod 106 and the rear foot rod 102, And between the pivot point with the extension section 1041 of the push rod 104; the extension section 1041 of the push rod 104 has a snap key 1042 and a bayonet pin 1045; the extension section 1041 of the push rod 104 is a hollow tube body, the snap key 1042 is set in the tube body of the extension section 1041, and is exposed outside the bottom end of the extension section 1041, the bayonet pin 1045 is set in a sleeve 1044, and the sleeve 1044 is sleeved in the push rod 104 The extension section 1041, the bayonet pin 1045 passes through the sleeve 1044, the extension section 1041, and the bayonet key 1042 in the radial direction, and the extension section 1041 of the push rod 104 is penetrated by the bayonet shaft 1045 A pair of long holes 10411 are passed through, and the length direction of the long holes 10411 is the axial direction of the extension section 1041; an elastic member is also arranged in the tube body of the extension section 1041, and the elastic force of the elastic member is The action direction is to make the locking key 1042 protrude from the tube body, and the locking pin 1045 is close to the bottom end of the extending section 1041 ; in this embodiment, the elastic member is a compression spring 1043 . A pull wire is also arranged in the extension section 1041 of the push rod 104, and one end of the pull wire is connected to the key 1042, that is, the end of the key 1042 is located inside the extension section 1041 of the push rod 104. The other end of the retractable structure is connected to a traction mechanism; the folded structure has two states: unfolded and folded; when the folded structure is in the unfolded state, the end of the transition rod 106 that is not pivotally connected with the rear foot rod 102 is close to the card hole, and the locking key 1042 is clamped in the locking hole. In this state, the armrest bar 103, the rear leg bar 102, and the extension section 1041 of the push bar 104 form a triangle; When the closing structure is in the retracted state, the end of the transition rod 106 that is not pivotally connected with the rear foot rod 102 is away from the locking hole, and the locking pin 1045 is locked in the locking groove 1061. In this state, the The armrest bar 103, the rear leg bar 102, the transition bar 106, and the extension section 1041 of the push bar 104 form a quadrilateral. The above components have constituted a complete set of retractable structure; in order to realize the linkage of other parts of the stroller, in this embodiment, the retractable structure also includes a front foot rod 101, a seat tube 105, and a second transition rod 107. The top end of the rod 101 is pivotally connected to the armrest rod 103, the front end of the seat tube 105 is pivotally connected to the front foot rod 101, and one end of the second transition rod 107 is pivotally connected to the seat tube 105. The other end of the two transition rods 107 is pivotally connected to the bottom end of the extension section 1041 of the push rod 104; , The second transition rod 107 forms a pentagon. In this embodiment, the compression spring 1043 is arranged in the tube body of the extension section 1041 of the push rod 104, and is sleeved on the pull wire. One end of the compression spring 1043 abuts against the key 1042, and the other One end abuts against the pin body in the tube passing through the extension section 1041 of the push rod 104 . The traction mechanism is a pressing device arranged on the top of the push rod 104; the pressing device has a pressing block, and when the pressing block is in a depressed state, the pull wire is in a pulling state; when the pressing block When in the released state, the pull wire is in a natural state. In this embodiment, the push rod is in the shape of an inverted "U", and the pressing device is arranged at the center of the top of the inverted "U". The baby stroller in this embodiment only needs to operate the traction mechanism with one hand to realize locking and unlocking in two states of unfolding and collapsing, which is convenient to use.

The second embodiment of the present utility model is a three-wheel stroller, which is different from the first embodiment in that two front foot rods gather together to form a front fork at the bottom of the front part of the stroller, and the three-wheel stroller The front wheel is mounted on the front fork.

Claims (5)

1. A folding structure for a stroller, characterized in that it includes a handrail bar, a push bar, a rear foot bar, and a transition bar; The top end of the rear foot bar is pivotally connected to the armrest bar; The bottom end of the push rod is pivotally connected to the rear end of the handle bar, and the push rod also has an extension section, and the extension section is located below the pivot point; One end of the transition rod is pivotally connected to the rear foot rod, and the other end of the transition rod is pivotally connected to the bottom end of the extension section of the push rod; and the transition rod is located between the rear leg rod and the push rod the inner side of the extension; The rear foot bar has an engaging hole, and the engaging hole is arranged between the pivot point of the rear foot bar and the armrest bar, and the pivot point of the transition bar; the transition bar has an engaging groove, The engaging groove is arranged between the pivot point of the transition rod and the rear foot rod, and the pivot point of the extension section of the push rod; The extension section of the push rod has a key and a bayonet; the extension section of the push rod is a hollow tube body, and the key is arranged in the tube body of the extension section and exposed outside the bottom end of the extension section. The bayonet is arranged on a sleeve, and the sleeve is sleeved on the extension section of the push rod. The push rod is passed through a pair of long holes by the clamp shaft, and the length direction of the long holes is the axial direction of the extension section; An elastic member is also arranged in the tube body of the extension section, and the direction of action of the elastic force of the elastic member is to make the key extend out of the tube body, and the bayonet pin is close to the bottom end of the extension section; A pull wire is also arranged in the extension of the push rod, one end of the pull wire is connected to the key, that is, the key is located at one end inside the extension of the push rod, and the other end of the pull wire is connected to a traction key. mechanism; The collapsible structure has two states of unfolding and collapsing; When the folding structure is in the unfolded state, the end of the transition rod that is not pivotally connected to the rear foot rod is close to the locking hole, and the locking key is locked in the locking hole. In this state, the armrest The extended section of the rod, the rear foot rod and the push rod forms a triangle; When the retractable structure is in the retracted state, the end of the transition rod that is not pivotally connected to the rear leg rod is away from the locking hole, and the bayonet pin is locked in the groove. In this state, the The extended sections of the handrail bar, the rear foot bar, the transition bar and the push bar form a quadrilateral. 2. The folding structure of the stroller according to claim 1, characterized in that the folding structure further comprises a front foot bar, a seat tube, and a second transition bar, and the top end of the front foot bar is pivotally connected to the armrest bar , the front end of the seat tube is pivotally connected to the front foot rod, one end of the second transition rod is pivotally connected to the seat tube, and the other end of the second transition rod is pivotally connected to the extension section of the push rod The bottom end of the handle bar, the extension of the push rod, the front foot bar, the seat tube, and the second transition bar form a pentagon. 3. The folding structure of the stroller according to claim 1 or 2, wherein the elastic member is a compression spring, and the compression spring is arranged in the tube body of the extension section of the push rod, and is sheathed On the pull wire, one end of the compression spring abuts against the key, and the other end abuts against a pin in the tube passing through the extension section of the push rod. 4. The folding structure of the stroller according to claim 1 or 2, wherein the traction mechanism is a pressing device arranged on the top of the push rod; the pressing device has a pressing block, when the When the pressing block is in a depressed state, the pull wire is in a pulling state; when the pressing block is in a released state, the pull wire is in a natural state. 5. The folding structure of the stroller according to claim 4, wherein the push rod is in the shape of an inverted "U", and the pressing device is arranged at the center of the top of the inverted "U".

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