CN104309676B - Children trolley - Google Patents

Abstract

The invention discloses a stroller for children, wherein the stroller frame at least includes a first support rod extending obliquely in the up and down direction, a second support rod pivotally connected with the upper part of the first support rod, and a rear part rotatably arranged The front attachment on the first pole, the front attachment is the front armrest or the front tray, there is a locking mechanism for locking the two between the front attachment and the first pole, and the second pole is provided with a When the first pole rotates close to the unlocking part that drives the locking mechanism to unlock, when the cart frame is in the unfolded state, the locking mechanism is locked, and the front attachment and the first pole are relatively unfolded and fixed to each other; when the cart frame is folded, The second support rod rotates closer to the first support rod, the unlocking member drives the locking mechanism to unlock, and the front accessory rotates relative to the first support rod and gradually moves closer to the first support rod. In this way, during the folding process of the cart frame, the front tray or the front armrest can be automatically and synchronously folded, so that the folding operation of the cart frame is more convenient.

Description

stroller

technical field

The invention relates to a stroller for children, in particular to a stroller for children with a tray or a front handrail that can be folded automatically when the stroller frame is folded.

Background technique

Children's strollers usually include a foldable stroller frame, wherein the front portion of the stroller frame is provided with a front armrest or a front tray, and the front armrest and the front tray are usually connected to the stroller frame in the following two ways: 1. One is to install the front armrest or front tray on the cart frame in a detachable way such as plugging, and first disassemble the front armrest or front tray when folding the cart frame, and wait for the cart frame to Store it together with the folded trolley frame after folding; the other is to connect the front armrest and the front tray to the trolley frame in a rotational manner, and set up a locking mechanism to lock it on the trolley frame , when the cart frame is folded, the front armrest or front tray needs to be unlocked separately, and then the cart frame is folded. The folding operation of the cart in the above two modes is very inconvenient, which affects the overall performance of the cart.

Contents of the invention

The object of the present invention is to provide a stroller for children, wherein the front tray or the front armrest can be folded automatically during the folding process of the stroller frame.

In order to achieve the above object, the technical scheme adopted in the present invention is:

A stroller for children, comprising a stroller frame in an unfolded state and a folded state, and a wheel assembly arranged at the bottom of the stroller frame, and the stroller frame at least includes a first pole extending obliquely in the up-down direction , a second support rod that is pivotally connected to the upper part of the first support rod, a front attachment that is rotatably arranged on the first support rod at the rear, the front attachment is a front armrest or a front tray, the A locking mechanism for locking the two is provided between the front attachment and the first pole, and a locking mechanism is provided on the second pole that can drive the locking mechanism to unlock when it rotates closer to the first pole. When the cart frame is in the unfolded state, the locking mechanism is locked, and the front attachment and the first pole are relatively unfolded and fixed to each other; when the cart frame is folded, the The second support rod rotates closer to the first support rod, the unlocking member drives the locking mechanism to unlock, and the front attachment rotates relative to the first support rod and gradually moves closer to the first support rod.

Preferably, the locking mechanism includes a first slider provided on the first pole and capable of sliding along its length direction, a first elastic member for providing an elastic restoring force of the first slider along the sliding direction, A second slider provided on the front accessory that can slide along its length direction, a second elastic member used to provide elastic recovery force of the second slider along the sliding direction, the first slider and the first slider One of the two parts of the two sliders is provided with a lock slot, and the other part is provided with a lock block that can be inserted into the lock slot. When the locking mechanism is locked, the lock block is inserted into the lock slot. When the locking mechanism is unlocked, the first sliding block and the second sliding block slide relative to each other, and the locking block is disengaged from the locking slot.

Further, the second support rod has a transfer end, and the transfer end is pivotally connected to the upper part of the first support rod through a rotating shaft, and the unlocking member is fixed on the transfer end. A joint piece, the outer peripheral surface of the joint piece is a spiral slope, the upper end of the first slider is against the spiral slope, when the second pole rotates around the rotation axis relative to the first pole , the spiral slope pushes the first sliding block to slide relative to the first pole so that the locking block is disengaged from the locking slot.

Furthermore, the first slider is provided with the lock groove, the upper groove surface of the lock groove is a first slope, the rear part of the second slider is provided with the lock block, the The upper surface of the locking block is a second inclined plane, and when the second pole rotates closer to the first pole, the joint piece drives the first sliding block to slide down, and the first inclined plane and the first In cooperation with the second inclined surface, the second sliding block slides away from the first sliding block along the length direction of the front attachment so that the locking block disengages from the locking groove.

Further, the first support rod is fixedly provided with a connection end, and the front attachment is rotatably connected to the front part of the connection end through a pin shaft.

Furthermore, the second slider is provided with a guide groove extending along its length extension direction, the second slider is slidably arranged in the rod cavity of the front accessory, and the pin shaft is passed through the The second elastic member is a spring arranged between the second sliding block and the front attachment for pushing the second sliding block to slide backward.

Further, a fixed shaft is fixed in the rod cavity of the first pole, and a chute extending along the sliding direction is opened on the first slider, and the first slider is slidably arranged on the first slider. In the rod cavity of a rod, the fixed shaft passes through the slide groove.

Furthermore, the first elastic member is a spring arranged between the fixed shaft and the first slider.

As a specific implementation, the first support rod is a front support, the second support rod is a push rod, and the upper part of the front support is pivotally connected to the lower part of the push rod.

As a specific implementation, the front accessory is a front tray.

Due to the application of the above-mentioned technical solution, the present invention has the following advantages compared with the prior art: In the children's stroller of the present invention, when the stroller frame is folded, when the second pole rotates closer to the first pole, The unlocking member can act on the locking mechanism to unlock between the front attachment and the first support rod, so that the front attachment can turn down under the action of its own gravity and gradually move closer to the first support rod. The front attachment can be a front tray or a front armrest. In this way, during the folding process of the cart frame, the front tray or front armrest can be automatically and synchronously folded, so that the folding operation of the cart frame is simplified and the folding is more convenient. .

Description of drawings

Attached picture 1 It is a perspective view of a child stroller in an unfolded state according to an embodiment of the present invention;

Attached picture 2 for the attached 1 A three-dimensional view of the children's stroller in a folded state;

Attached picture 3 for the attached 1 Schematic diagram of the connection principle between the front tray and the front bracket of the stroller; the locking mechanism is in the locked state;

Attached picture 4 for the attached 2 Schematic diagram of the connection principle between the front tray and the front bracket on the children's stroller; the locking mechanism is in the unlocked state;

in: 100 , Cart frame; 1 , front bracket (first pole); 2 , push rod (second rod); 3 , front tray (front accessory); 4 , rear support; 5 , Connecting terminal; 6 , joint parts (unlocking parts);

7 , the first slider; 71 , lock slot; 71a , the first slope; 72 , chute;

8 , the first elastic member (spring);

9 , the second slider; 91 , lock block; 91b , the second slope; 92 ,The guide groove;

10 , fixed axis; 11 , Pin shaft; 12 , the second elastic member (spring); 13 , Shaft.

detailed description

The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

see picture 1 ,picture 2 A children's stroller is shown, including a stroller frame having an unfolded state and a folded state 100 , set on the cart frame 100 Bottom wheel assembly. The cart frame 100 Includes front bracket 1 , putter 2 , front tray 3 and rear bracket 4 , front bracket 1 Extending obliquely in the up and down direction, the push rod 2 The lower part is the transfer end, the push rod 2 The lower part passes through the shaft 13 with front bracket 1 The upper phase pivot connection, the rear support 4 The upper pivot is attached to the front bracket 1 upper, front tray 3 The rear of the is also pivotally attached to the front bracket 1 on and on the front bracket 1 in front of. front tray 3 rear and front brackets 1 There is a locking mechanism for locking the two in between, the push rod 2 There is an unlocking piece on the 2 relative front bracket 1 When it is rotated close, it acts on the above-mentioned locking mechanism to unlock it. When the cart frame is unfolded, the locking mechanism is locked and the front tray 3 fixed on the front bracket 1 forward and relative to the front bracket 1 unfold; and when the cart frame is folded, the push rod 2 axis of rotation 13 relative front bracket 1 Rotate close, in the above process, the unlocking piece unlocks the locking mechanism so that the front tray 3 relative front bracket 1 It can be supported forward under the action of its own gravity 1 Rotate closer, folded as shown 2 shown.

See the attached drawings, where the front bracket 1 The upper part is fixedly provided with connection terminals 5 , front tray 3 through the pin 11 rotatably located at the connection end 5 front, rear bracket 4 The upper pivot is connected to the connection end 5 rear of the push rod 2 The lower part of the shaft passes through the 13 pivotally connected to the connection end 5 superior.

see picture 3 ,picture 4 shown, the locking mechanism consists of a front bracket located on the 1 first slider that slides along its length 7 , used to provide the first slider 7 First elastic member with elastic recovery force in the sliding direction 8 , on the front tray 3 A second slider that slides along its length 9 , to provide a second slider 9 Second elastic member with elastic recovery force in the sliding direction 12 . first slider 7 with the second slider 9 Among the two parts, one of the parts is provided with a lock groove, and the other part is provided with a lock block that can be inserted into the above-mentioned lock groove. When the lock block is inserted into the lock groove, the first slider 7 with the second slider 9 Relatively fixed between them, the locking mechanism is locked; and when the lock block and the lock groove are disengaged from each other, the first slider 7 with the second slider 9 Sliding relative to each other, the locking mechanism is unlocked.

In this example, see Fig. 3 ,picture 4 shown, the first slider 7 Sliding up and down on the front bracket 1 of the stem cavity, the first slider 7 There is a chute on the top 72 , front bracket 1 There is also a fixed shaft in the rod cavity 10 , the fixed axis 10 Pass through the above chute 72 to provide the first slider 7 slide guide, the first elastic member 8 The spring is used, the spring is located in the above chute 72 on top of and on the first slider 7 with fixed axis 10 between; second slider 9 Sliding back and forth on the front tray 3 the stem cavity, the second slider 9 There are guide grooves extending along its length 92 , pin 11 through the guide groove 92 Center to the second slider 9 for sliding guides, the second elastic 12 The spring is also used, the spring is located in the front tray 3 in the rod cavity and located in the second slider 9 in front of the front, and its two ends resist the second slider 9 front end with front tray 3 on the inner wall of the rod cavity.

first slider 7 There is a lock slot on the front end of the 71 , the second slider 9 There is a lock slot on the rear end of the 71 lock block in 91 , the current tray 3 relative front bracket 1 When expanded, the second slider 9 in the second elastic 12 Under the action of the elastic force, it slides backward and is inserted in the first slider 7 lock slot 71 , so that the locking mechanism locks, which in turn makes the front tray 3 relative front bracket 1 fixed. lock slot 71 The upper side of the groove is the first slope 71a , lock block 91 The upper side surface is the second slope 91b , when the first slider 7 along the front bracket 1 When sliding down, the first slope 71a with the second bevel 91b cooperate, which in turn can drive the second slider 9 overcome the second elastic 12 The elastic force slides forward, that is, moving away from the first slider 7 direction, so that the locking block 91 out of lock slot 71 , causing the locking mechanism to unlock.

see picture 3 shown, putter 2 The unlocking part used to unlock the locking mechanism is fixed on the push rod 2 lower fittings 6 . The connector 6 The outer peripheral surface of is a spiral slope, that is, the point on the spiral slope to the rotation axis 13 The distance from the axis line is set gradually, the first slider 7 in the first elastic 8 Under the action of 6 on the above-mentioned spiral slope. The helical ramp has a distance from the axis of rotation 13 Proximal end closer to the axis line and distance from the axis of rotation 13 At the far end of the axis line, when the cart frame is unfolded, the push rod 2 relative front bracket 1 expand, first slider 7 The upper end of the first elastic member 8 Under the action of resisting at the proximal position of the spiral slope, the second slider 9 rear lock block 91 in the second elastic 10 under the action of the first slider inserted stably in the 7 lock slot on 71 in; and when putter 2 relative front bracket 1 axis of rotation 13 When rotated closer, the joint pieces 6 also around the axis of rotation 13 Rotation occurs, it gradually rotates from the proximal end to the distal end, the first slider 7 The upper end gradually resists to the joint 6 At the far end position of the upper helical bevel, in the above process, the helical bevel pushes the first slider 7 , making it overcome the first elastic member 8 Gradually slide downwards due to the force, so that the first slope 71a acting on the second slope 91b , making the second slider 9 along the front tray 3 slide forward so that the locking block 91 with lock slot 71 phase detached, on front tray 3 Under the action of its own gravity, the front tray 3 Around the pin 11 Flip down with the front stand 1 Gradually move closer together.

In summary, the children's stroller of the present invention, on the stroller frame 100 During the folding operation, the front tray 3 with front bracket 1 The locking mechanism between can be unlocked automatically, and the front tray 3 Under the action of its own gravity, it gradually aligns with the front bracket 1 close together, the user no longer needs to move the front tray 3 It can be disassembled or folded separately, so that the folding operation of the stroller frame is more convenient.

In the above setting structure, the front tray 3 It can also be replaced by a front armrest for automatic folding of the front armrest during the folding operation of the cart frame.

In some other cart frame structures, if the front tray as the front accessory 3 Or if the front armrest is arranged on the rear bracket, it is only necessary to set a locking mechanism between the rear bracket and the front attachment, and to set an unlocking piece on the second pole connected with the rear bracket to make the pushcart During the folding operation of the frame, when the second pole rotates relative to the rear frame, the unlocking member acts on the locking mechanism to unlock it, so that the front accessory gradually rotates closer to the rear frame under the action of its own gravity.

The above-mentioned embodiments are only to illustrate the technical concept and characteristics of the present invention, and the purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly, and not to limit the protection scope of the present invention. All equivalent changes or modifications made according to the spirit of the present invention shall fall within the protection scope of the present invention.

Claims (10)

1. a children trolley, including the stroller frame with deployed condition and folded state, it is located at the wheel assembly bottom described stroller frame, it is characterized in that: described stroller frame at least includes tilting the first pole extended along the vertical direction, the second pole being connected with the top phase pivot of described first pole, posterior rotation it is located at the front adnexa on described first pole, described front adnexa is front handrail or front tray, it is provided with the locking mechanism for both being locked between described front adnexa and described first pole, described second pole is provided with can order about the unlock piece that described locking mechanism unlocks relative to described first pole when it rotates and draw close, when described stroller frame is in deployed condition, described locking mechanism locks, described front adnexa is relative with described first pole to launch and interfixes；When described stroller frame folds, described second pole rotates relative to described first pole draws close, and described unlock piece orders about described locking mechanism and unlocks, and described front adnexa rotates relative to described first pole and gradually draws close mutually with described first pole.

Children trolley the most according to claim 1, it is characterized in that: described locking mechanism includes being located on described first pole the first slide block that can slide along its length, for providing described first slide block along the first elastic component of glide direction elastic-restoring force, it is located on described front adnexa the second slide block that can slide along its length, for providing described second slide block along the second elastic component of glide direction elastic-restoring force, described first slide block offers locked groove on parts in described second slide block both parts, another parts are provided with the lock dog that can be inserted in described locked groove, when described locking mechanism locks, described lock dog is plugged in described locked groove；When described locking mechanism unlocks, described first slide block is relative with described second slide block to slide, and described lock dog is separated with described locked groove.

Children trolley the most according to claim 2, it is characterized in that: described second pole has change-over terminal, described change-over terminal is connected with the top phase pivot of described first pole by rotating shaft, described unlock piece is the adapter piece being fixedly arranged in described change-over terminal, the outside circumference of described adapter piece helically inclined-plane, the upper end of described first slide block is kept out on described screw inclined plane, when described second pole rotates relative to described first pole around described rotating shaft, described screw inclined plane promotes the most described first pole of described first slide block to slide and described lock dog is separated with described locked groove.

Children trolley the most according to claim 3, it is characterized in that: described first slide block is provided with described locked groove, the upside groove face of described locked groove is the first inclined-plane, the rear portion of described second slide block is provided with described lock dog, the uper side surface of described lock dog is the second inclined-plane, when described second pole rotates relative to described first pole and to draw close, described adapter piece drives described first slide block to glide, described first inclined-plane matches with described second inclined-plane, described second slide block makes described lock dog depart from described locked groove along the length direction of described front adnexa away from described first slide block slip.

Children trolley the most according to claim 2, it is characterised in that: being fixedly provided with connection end on described first pole, described front adnexa is connected to the front portion of described connection end rotationally by bearing pin.

Children trolley the most according to claim 5, it is characterised in that: offering on described second slide block and extend along a length thereof the gathering sill that direction extends, described second slide block is located at slidably in the bar chamber of described front adnexa and described bearing pin is located in described gathering sill；Described second elastic component is to be located between described second slide block and described front adnexa for the spring promoting described second slide block to slide backward.

Children trolley the most according to claim 2, it is characterized in that: the bar chamber of described first pole is installed with fixing axle, offer on described first slide block and slide along the chute that direction extends, described first slide block is located in the bar chamber of described first pole slidably, and described fixing axle is located in described chute.

Children trolley the most according to claim 7, it is characterised in that: described first elastic component is the spring being located between described fixing axle and described first slide block.

9. according to the arbitrary described children trolley of claim 1 to 8, it is characterised in that: described first pole is fore-stock, and described second pole is push rod, and the top of described fore-stock is connected with the bottom phase pivot of described push rod.

Children trolley the most according to claim 9, it is characterised in that: described front adnexa is front tray.