CN103192861B - Cart frame - Google Patents

Abstract

The invention discloses a cart frame, which comprises a front foot, a rear foot, a seat board, a side handrail, a connecting pipe and a cart hand and roof folding mechanism, wherein the cart hand is slidably sleeved in the connecting pipe, the tail end of the cart hand can be supported on the cart foot of the cart frame in a clamping manner, the roof folding mechanism is slidably arranged on the cart hand, one end of the connecting pipe is pivoted to the side handrail, and the other end of the connecting pipe is pivoted to the seat board and the rear foot. The canopy folding mechanism of the stroller frame can slide by matching with the downward sliding of the handle, so that the folded structure of the stroller frame is more compact, the folding volume is reduced, the space is saved, and the stroller frame is convenient to carry.

Description

Cart frame

technical field

The invention relates to a vehicle frame, in particular to a stroller frame for babies. The canopy of the vehicle frame can slide downwards in cooperation with the driver, so that the structure of the vehicle frame is more compact after being folded, and the folding volume is reduced. Save space and easy to carry.

Background technique

In terms of the design of the frame structure of the baby stroller, in order to meet the practicality required by consumers and the convenience of carrying, the baby stroller is generally designed to be a foldable type, so that it can be opened into a baby stroller when in use. When not in use, it can be folded into a smaller volume for easy storage or portability.

When a general stroller is folded, the front and rear legs and side armrests that are pivotally connected to each other are folded together. Reduced, but the space occupied by the vertical direction has increased. Therefore, the folded children's stroller is very long from the top of the driver to the legs, which makes it very inconvenient to lift the whole frame by hand. To solve the problem that the cart frame is too long and inconvenient to carry after folding, it is necessary to further adopt folding or other methods of reducing the volume, but so far, there is no better means to solve the above problems.

Therefore, it is necessary to provide a stroller frame that has a more compact structure after being folded, reduces the folding volume, saves space, and is convenient to carry.

Contents of the invention

The purpose of the present invention is to provide a canopy that can slide downwards with the driver, so that the structure of the folded frame is more compact, the folding volume is reduced, the space is saved, and the cart frame is convenient to carry.

In order to achieve the above object, the present invention provides a cart frame, including front feet, rear legs, seat board, side armrests and connecting pipes, the cart frame also includes a driver and a roof retractable mechanism, the driver can slide is socketed in the connecting pipe and the end can be snapped and supported on the rear foot of the frame, the canopy folding mechanism is slidably installed on the driver, and one end of the connecting pipe is pivotally connected to The other end of the side armrest is pivotally connected to the seat board and the rear leg.

Preferably, the upper end of the front leg and the upper end of the rear leg are respectively pivotally connected to the side armrest, the middle part of the front leg is pivotally connected to the front end of the seat plate, and the rear end of the seat plate is pivotally connected to the Connect the lower end of the tube.

Specifically, the stroller frame further includes a connecting piece, the connecting piece has a bent structure, one end is pivotally connected to the lower end of the connecting pipe, and the other end is pivotally connected to the rear foot.

Preferably, the roof folding mechanism includes a roof fixing base, a front bracket and a rear bracket, the roof fixing base is slidably mounted on the driver, and the rear bracket is fixed on the roof fixing base Above, the front bracket is pivotably connected to the roof fixing seat in a retractable manner. By pivotally connecting the front bracket to the roof fixing seat, the front bracket rotates along the pivot point to open the roof when in use, and can be rotated and folded when not in use, which is simple and convenient to use fast.

More specifically, the canopy fixing seat is provided with a sliding groove, the driver fixes a positioning pin, and the sliding groove is slidably connected to the positioning pin. More specifically, the lower end of the sliding groove defines a through hole with a diameter larger than the groove width of the sliding groove, and the through hole communicates with the sliding groove. Utilizing the sliding fit between the positioning pin and the sliding groove, the canopy fixing seat can slide back and forth on the driver, thereby freeing up more space to facilitate the folding of the driver.

More specifically, the canopy folding mechanism also includes a folding assembly, and the folding assembly includes a front link and a rear link, one end of the front link is pivotally connected to the front bracket, and the other end is connected to the front bracket. One end of the rear connecting rod is pivotally connected, and the other end of the rear connecting rod is pivotally connected to the rear bracket. Since the end of the front bracket is only pivotally connected to the ceiling fixing seat, the upper end will be rotated downward under the action of gravity, so by being connected with the front connecting rod, the front bracket can be effectively fixed, and the The front connecting rod is pivotally connected with the rear connecting rod. Therefore, when the front bracket is rotated and folded, the front connecting rod and the rear connecting rod can be folded together, so that the front bracket realizes the supporting function. At the same time, the entire canopy can be folded, the structure is simple, and the use is convenient and flexible.

Specifically, the stroller frame also includes an engaging mechanism, the engaging mechanism includes an engaging part and an engaging part, the engaging part is fixed to the rear foot, and a receiving groove is opened on the side, the The engaging part is telescopically installed on the lower end of the rider, and when the rider is supported on the rear foot, the engaging part extends into the accommodating groove and engages with the engaging part. By inserting the engaging part into the accommodating groove of the engaging part, the engaging part is engaged with the engaging part, so that the driver cannot rotate, thereby restricting the folding of the entire trolley driver, Finally achieve the purpose of positioning.

More specifically, the engaging mechanism further includes a first spring and a fixing pin, the first spring is accommodated inside the engaging member, and one end of the first spring is in contact with the bottom of the engaging member, and the other end is in contact with the engaging member. The fixing pins interfere, and waist-shaped holes are opened on both sides of the engaging member. The fixing pins are fixed on the driver and slide through the waist-shaped holes. By arranging the first spring, the elastic effect of the first spring is used to make the engaging member expand and contract at the lower end of the driver under the guidance of the fixing pin, so that the engaging member is aligned The accommodating groove can automatically engage with the accommodating groove afterward.

More specifically, the engaging mechanism also includes a locking assembly, the locking assembly includes a second spring and a holding block, an accommodating cavity is opened on one side of the connecting pipe, and a locking assembly is provided at the rear end of the seat plate. seat, the engaging seat is provided with a clamping cavity, one end of the second spring is in contact with the interior of the accommodating cavity, and the other end is in contact with the clamping block, after the cart frame is folded, the The other end of the clamping block is clamped in the clamping cavity of the clamping seat under the elastic force of the second spring. Specifically, the locking assembly further includes a limit pin, and the clamping block is provided with a notch passing through both sides, the limit pin is fixedly passed through the accommodating cavity, and the notch is slidably Clamped on the limit pin. The inner side of the lower end of the rider is provided with a protruding post, and when the rider moves up, the protruding post pushes the clamping block, and the clamping block breaks away from the clamping cavity of the engaging seat. When the trolley frame is opened, the driver slides upward to make the boss push the lower end of the clamping block, and the clamping block is disengaged from the clamping cavity, and the trolley frame is closed. After closing, the rider moves down relative to the connecting tube, so that the boss leaves the clamping block, and then the clamping block enters the clamping cavity under the elastic force of the second spring to achieve engagement. The limit pin can limit the sliding distance of the clamping block to prevent the clamping block from falling off, and the entire locking assembly can prevent the closed vehicle frame from opening automatically.

Specifically, the trolley frame further includes a basket tube, and the end of the basket tube is connected and fixed to the seat plate.

Compared with the prior art, since the present invention pivotally connects the side armrests, front legs, rear legs, seat plate and connecting pipes to form a vehicle frame, and then connects them in the connecting pipes through the vehicle glove, the driver It can slide up and down in the connecting pipe, and by slidingly installing the canopy folding mechanism on the driver, the canopy fixing seat can slide along the direction of the driver in cooperation with the driver's slide down, and when folded When the driver slides down, the canopy fixing seat moves down with the driver. When opening, the driver slides upwards, and the canopy fixing seat slides down, returning to the original position to re-realize the shielding effect of the canopy, thereby The structure of the entire trolley frame is made more compact, the folding volume is reduced, space is saved, and it is convenient to carry.

Description of drawings

Fig. 1 is a three-dimensional structure diagram of the cart frame of the present invention.

Fig. 2 is a schematic structural view of the cart frame of the present invention.

Fig. 3 is a schematic structural view of the canopy folding mechanism in the cart frame of the present invention.

Fig. 4 is an exploded schematic view of the engaging mechanism in the cart frame of the present invention.

Fig. 5 is a cross-sectional view of the engaging mechanism in the cart frame of the present invention.

Fig. 6 is a schematic view of the state of the locking assembly when the stroller frame of the present invention is unfolded.

Fig. 7 is a schematic view of the state of the locking assembly when the cart frame of the present invention is folded.

Fig. 8 is a schematic diagram of the state when the cart frame of the present invention is folded.

Fig. 9 is a state diagram of the rider sliding with the canopy folding mechanism in the cart frame of the present invention.

Fig. 10 is a schematic diagram of the inventive stroller when the frame is fully folded.

Detailed ways

As shown in Fig. 1 and Fig. 2, the cart frame 100 of the present invention includes side armrests 1, front legs 2, rear legs 3, seat board 4, connecting pipe 5, connector 6, driver 7 and roof retracting mechanism 8, so The upper end of the front leg 2 and the upper end of the rear leg 3 are respectively pivotally connected to the side armrest 1, the middle part of the front leg 2 is pivotally connected to the front end of the seat plate 4, and the upper end of the connecting pipe 5 is pivotally connected to the The rear end of the side armrest 1 is pivotally connected to the rear end of the seat plate 4. The rear end of the seat plate 4 of the present invention is provided with an engaging seat 41. Therefore, the lower end of the connecting pipe is actually connected to the engaging seat. 41 pivotally connected; the connecting piece 6 is a bent structure, and one end is pivotally connected to the lower end of the connecting pipe 5, and the other end is pivotally connected to the rear foot 3, and the lower end of the driver 7 is slidably sleeved on the The connecting pipe 5 and its end are supported on the middle part of the rear foot 3 in a snap-fit manner, and the canopy folding mechanism 8 is slidably installed on the middle section of the driver 7 . The cart frame 100 also includes a basket tube 101 and a back tube 102 , the back tube 102 is pivotally connected to the engaging seat 41 at the rear end of the seat plate 4 and extends obliquely upward. The end of the basket tube 101 is connected to the seat plate 4, and is sleeved and fixed on the rear end of the seat tube supporting the seat plate 4. After the cart frame 100 is folded, the rear wheel is used to connect with the food basket. The tube 101 can support the stroller frame 100 to stand, which has better convenience.

As shown in FIG. 3 , the roof folding mechanism 8 includes a roof fixing seat 81 , a front bracket 82 , a rear bracket 83 and a folding assembly 84 . The canopy fixing seat 81 is slidably mounted on the middle part of the driver 7. Specifically, the side of the canopy fixing seat 81 close to the inside of the driver 7 is provided with a sliding groove 81a, and the sliding groove 81a penetrates through the bottom. A locating pin 71 is fixed on the rider 7, and one end of the locating pin 71 is slidably embedded in the sliding groove 81a. The sliding cooperation between the positioning pin 71 and the sliding groove 81 a enables the canopy fixing seat 81 to slide back and forth on the driver 7 , thereby freeing up more space to facilitate the folding of the driver 7 . More specifically, the lower end of the sliding groove 81a defines a through hole 81b with a diameter larger than the groove width of the sliding groove 81a, and the through hole 81b communicates with the sliding groove 81a. The through hole 81 b allows the positioning pin 71 to enter and exit, which facilitates the installation and disassembly of the ceiling fixing seat 81 . The rear bracket 83 is fixed on the roof fixing base 81 , and the front bracket 82 is pivotably connected to the roof fixing base 81 in a retractable manner. The folding assembly 84 includes a front connecting rod 84a and a rear connecting rod 84b, one end of the front connecting rod 84a is pivotally connected to the middle part of the front bracket 82, and the other end is pivotally connected to one end of the rear connecting rod 84b, The other end of the rear link 84b is pivotally connected to the middle of the rear bracket 83 . Because the end of the front bracket 82 is only pivotally connected with the roof fixing seat 81, the upper end will be rotated downward due to the action of gravity, so by being connected with the front connecting rod 84a, the front bracket 82 can be effectively fixed, and the front link 84a is pivotally connected to the rear link 84b, therefore, when the front bracket 82 is rotated and folded, the front link 84a and the rear link 84b can be folded together, In this way, the front bracket 82 can be supported while the entire canopy can be folded.

As shown in Figures 4 and 5, the cart frame 100 also includes an engaging mechanism 9, and the engaging mechanism 9 includes an engaging member 91, an engaging portion 92, a first spring 93, a fixing pin 94 and a locking mechanism 9. Assemblies 95, the engaging part 92 is fixed on the middle part of the rear foot 3, and a receiving groove 92a is provided on the side inclined upwards, and the engaging part 91 is telescopically installed on the lower end of the driver 7, and the driver 7 When supported on the rear foot 3, the engaging member 91 extends into the accommodating groove 92a and engages with the engaging portion 92. By inserting the engaging part 91 into the accommodating groove 92a of the engaging part 92, the engaging part 91 is engaged with the engaging part 92, so that the rider 7 cannot rotate, thereby restricting the entire pushing force. The folding of the car driver 100 finally achieves the purpose of positioning.

The engaging member 91 has an accommodating hole 91a, the first spring 93 is accommodated in the accommodating hole 91a, and one end is in contact with the bottom of the accommodating hole 91a, and the other end is in contact with the fixing pin. 94 conflicts, the two sides of the engaging member 91 are provided with a waist-shaped hole 91b, and the fixing pin 94 is fixed on the driver 7 and slides through the waist-shaped hole 91b of the engaging member 91 . By setting the first spring 93, utilizing the elastic effect of the first spring 93, using the engaging member 91 to achieve telescopic expansion at the lower end of the driver 7 under the cooperation and guidance of the fixing pin 94 and the waist-shaped hole 91b , so that the engaging member 91 can automatically engage with the accommodating groove 92a after being aligned with the accommodating groove 92a.

As shown in Figures 6 and 7, the locking assembly 95 includes a second spring 95a, a holding block 95b and a limit pin 95c, and the inner side of the connecting pipe 5 is provided with an outwardly protruding accommodating cavity 51 And the accommodating cavity 51 is arranged on the side of the connecting tube 5 along the extension direction of the tube body of the connecting tube 5, and the clamping block 95b is in the accommodating cavity 51 along the driver 7 and the The connecting pipe 5 slides in the direction of extension, and the rear end of the seat plate 4 is provided with an engaging seat 41. Holding cavity 41a, the accommodating cavity 51 has an opening facing the engaging seat 41, the opening can allow the holding block 95b to slide in and out of the engaging seat 41, and the lower end of the driver 7 is provided with a protrusion on the inner side. post 72, the protruding post 72 can also be the protruding end inside the fixing pin 94, one end of the second spring 95a is in contact with the interior of the accommodating cavity 51, and the other end is in contact with the clamping block 95b superior. The holding block 95b is provided with a notch 95b1 passing through both sides, the limiting pin 95c fixedly passes through the two side walls of the accommodating cavity 51, and the notch 95b1 is slidably held on the On the limit pin 95c. When the trolley frame 100 is opened, the driver 7 slides upwards so that the boss 72 pushes the lower end of the clamping block 95b, and the clamping block 95b is disengaged from the clamping cavity 41a. After the cart frame 100 is folded, the driver 7 moves down relative to the connecting pipe 5, so that the protrusion 72 leaves the holding block 95b, and then the holding block 95b is pushed by the second spring 95a. The elastic force enters the clamping cavity 41a to achieve engagement, the limit pin 95c can limit the sliding distance of the clamping block 95b, and prevent the clamping block 95b from falling off, and the entire locking assembly 95 can prevent The frame opens automatically.

Based on the above and in combination with FIG. 8 , FIG. 9 and FIG. 10 , the opening and folding process of the cart frame 100 will be described in detail below, as follows:

When the stroller frame 100 is unfolded, the side armrests 1 are in a horizontal state, the front legs 2 and the rear legs 3 are opened into a figure-eight shape, the seat plate 4 is pivotally connected between the front legs 2 and the rear legs 3 and In a horizontal state; the driver 7 is socketed in the connecting pipe 5, and the engaging piece 91 at the end of the driver 7 extends out of the connecting pipe 5 and engages with the accommodation groove 92a of the engaging part 92 , at this time, the driver and the canopy fixing seat 81 are both in the unfolded use state, and the protrusion 72 is in contact with the clamping block 95b. When the cart frame 100 is folded, the front bracket 82 of the canopy folding mechanism 8 is rotated to make the front bracket 82 rotate clockwise to approach the rear bracket 83, and at the same time, the front bracket 82 of the folding assembly 84 The connecting rod 84a and the rear connecting rod 84b are folded, and finally the front frame 82 is overlapped with the rear frame 83 to completely fold the roof folding mechanism 8 . Then pull the operating part 73 on the driver 7 to drive the engaging part 91 to move upwards and withdraw from the accommodating groove 92a. At this time, the engaging part 91 and the engaging part 92 are unlocked, and push The rider 7 rotates the components of the vehicle frame 100, such as the side armrest 1, the front foot 2, the rear foot 3 and the seat plate 4, so that they can be relatively rotated closer, for example, the side armrest 1 rotates along the pivot joint at its rear end, or The connecting pipe 5 rotates along the pivot point, and drives the connecting member 6 to rotate along the pivot point pivoted with the rear foot 3; Rotate downward, the seat plate 4 rotates downward along the pivot joint with the front foot 2, so that the cart frame 100 is folded, at this time, the driver 7 is pushed downward along the connecting pipe 5 Move; when the driver 7 moves downward, the roof fixing seat 81 of the roof retracting mechanism 8 will first touch the upper end of the connecting pipe 5, and at this time, the positioning pin 71 is still kept in the sliding groove 81a If the driver 7 is pushed down by force directly, the positioning pin 71 will move down along the sliding groove 81a until the through hole 81b, and there is no need to move the roof fixing seat 81 separately at this time. Then it can be removed from the driver 7; at this time, the boss 72 also moves downward synchronously and breaks away from the pushing state of the holding block 95b of the locking assembly 95, and the holding block 95b is in the Under the action of the elasticity of the second spring 95a, the second spring 95a moves downward and enters into the holding cavity 41a of the engaging seat 41, so that the connecting pipe 5 is locked with the engaging seat 41, that is, the driver 7 is fixed to the engaging seat 41, so as to lock the folded state of the whole cart frame 100, and at this moment, the cart frame 100 reaches the fully folded state.

In addition, if only the roof fixing seat 81 of the roof retracting mechanism 8 needs to be removed, the roof fixing seat 81 of the roof retracting mechanism 8 can be pushed to slide upwards along the rider, so that the positioning pin 71 is located on the through hole 81b, the canopy folding mechanism 8 can be separated from the driver 7 alone. When the roof folding mechanism is to be restored and installed on the driver 7, it is only necessary to align the through hole 81b of the roof fixing seat 81 with the positioning pin 71, and then place the roof fixing seat 81 is sleeved on the driver 7, and moves down along the driver 7, so that the positioning pin 71 abuts against the upper end of the sliding groove 81a, and the installation of the roof retracting mechanism 8 is completed.

When the trolley frame 100 needs to be unfolded, the driver 7 is pulled upwards so that the driver 7 moves upwards along the connecting pipe 5, and the boss 72 moves upwards with the driver 7. When reaching the When the clamping block 95b is below, it conflicts with the clamping block 95b and continues to push the clamping block 95b upwards while compressing the second spring 95a. When the clamping block 95b exits the clamping cavity 41a , the connecting pipe 5 and the engaging seat 41 are unlocked, and the side armrest 1, the front leg 2 and the rear leg 3 can be unfolded at this time. At this time, the positioning pin 71 is still maintained at the through hole 81b , the canopy retractable mechanism 8 can be further pushed to make the positioning pin 71 abut against the upper end of the sliding groove 81a, and then the front bracket 82 can be opened to open the canopy retractable mechanism 8. At this time, the entire The cart frame 100 is fully open.

In the present invention, after the side armrest 1, the front leg 2, the rear leg 3, the seat plate 4 and the connecting pipe 5 are pivotally connected to each other to form a vehicle frame, the driver 7 is socketed in the connecting pipe 5, so that the The driver 7 can slide up and down in the connecting pipe 5, and by slidingly installing the roof folding mechanism 8 on the driver 7, the roof fixing seat 81 can cooperate with the driver 7 to slide down. Sliding along the direction of the driver 7, when folding, the driver 7 slides downward, and the canopy fixing seat 81 first moves down with the driver 7, so that the front connecting rod 84a and the rear connecting rod 84b can be folded on the folded push rod. In the cart frame 100, the folded volume of the cart frame 100 is reduced. When opening, the rider 7 slides upwards, and the ceiling fixing seat 81 slides downwards, and returns to the original position to realize the restoration of the ceiling again. The shielding effect makes the structure of the entire cart frame 100 more compact, reduces the folding volume, saves space, and is convenient to carry.

The above disclosures are only preferred examples of the present invention, and of course cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the patent scope of the present invention still fall within the scope of the present invention.

Claims (10)

1. A cart frame, comprising front feet, rear feet, seat plate, side armrests and connecting pipes, the upper ends of the front feet and the rear feet are respectively pivotally connected to the side armrests, and the middle part of the front feet is pivotally connected to The front end of the seat plate and the rear end of the seat plate are pivotally connected to the lower end of the connecting pipe; it is characterized in that: the cart frame also includes a driver and a roof folding mechanism, and the driver can slide The connecting pipe is sleeved in the connecting pipe and the end can be snapped and supported on the rear foot of the vehicle frame. The canopy folding mechanism is slidably installed on the driver, and one end of the connecting pipe is pivotally connected to the The other end of the side armrest is pivotally connected to the seat plate and the rear foot; the cart frame also includes a locking mechanism, the locking mechanism includes a locking part and a locking part, and the locking part is fixed There is an accommodating groove on the side of the rear foot, and the engaging member is telescopically installed on the lower end of the driver. When the driver is supported on the rear foot, the engaging member extends into the accommodating The locking mechanism also includes a locking assembly, the locking assembly includes a second spring and a holding block, and an accommodation cavity is opened on one side of the connecting pipe. The rear end of the seat plate is provided with an engaging seat, and the engaging seat is provided with a holding cavity, and one end of the second spring is in contact with the interior of the accommodating cavity, and the other end is in contact with the holding block. After the cart frame is folded, the other end of the holding block is held in the holding cavity of the engaging seat under the elastic force of the second spring. 2. The cart frame according to claim 1, characterized in that: the cart frame further comprises a connecting piece, the connecting piece has a bent structure, and one end is pivotally connected to the lower end of the connecting pipe, The other end is pivotally connected to the rear foot. 3. The stroller frame according to claim 1, wherein the canopy folding mechanism comprises a canopy fixing base, a front bracket and a rear bracket, and the canopy fixing base is slidably mounted on the For the rider, the rear bracket is fixed on the roof fixing seat, and the front bracket is pivotally connected to the roof fixing seat in a retractable manner. 4 . The stroller frame according to claim 3 , wherein a sliding groove is provided on the roof fixing seat, a positioning pin is fixed by the driver, and the sliding groove is slidably connected to the positioning pin. 4 . 5 . The cart frame according to claim 4 , wherein a through hole with a diameter larger than the width of the sliding groove is defined at the lower end of the sliding groove, and the through hole communicates with the sliding groove. 5 . 6. The stroller frame according to claim 3, wherein the canopy folding mechanism further comprises a folding assembly, the folding assembly includes a front link and a rear link, one end of the front link It is pivotally connected to the front bracket, and the other end is pivotally connected to one end of the rear connecting rod, and the other end of the rear connecting rod is pivotally connected to the rear bracket. 7. The stroller frame according to claim 1, wherein the engaging mechanism further comprises a first spring and a fixing pin, the first spring is accommodated inside the engaging member, and one end of the first spring is connected to the engaging member. The bottom of the engaging piece is in conflict, and the other end is in conflict with the fixing pin. Waist-shaped holes are opened on both sides of the engaging member. The fixing pin is fixed on the driver and slides through the waist. hole. 8. The stroller frame according to claim 1, wherein the locking assembly further comprises a limit pin, and the clamping block is provided with notches penetrating both sides, and the limit pin is fixedly Passing through the accommodating cavity, the notch is slidably locked on the limiting pin. 9. The trolley frame according to claim 1, wherein a protruding post is provided on the inner side of the lower end of the rider, and when the rider moves up, the protruding post pushes the clamping block , the clamping block is separated from the clamping cavity of the engaging seat, the cart frame further includes a basket tube, and the end of the basket tube is connected and fixed to the seat plate. 10 . The cart frame according to claim 1 , wherein the cart frame further comprises a basket tube, and the end of the basket tube is connected and fixed to the seat plate. 11 .