CN223494570U - A trolley frame and a trolley equipped with the frame - Google Patents
A trolley frame and a trolley equipped with the frameInfo
- Publication number
- CN223494570U CN223494570U CN202423029811.2U CN202423029811U CN223494570U CN 223494570 U CN223494570 U CN 223494570U CN 202423029811 U CN202423029811 U CN 202423029811U CN 223494570 U CN223494570 U CN 223494570U
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- frame
- connecting piece
- cart
- cart frame
- pivoted
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Abstract
本实用新型公开了一种推车车架以及设有该车架的推车，所述车架可在展开状态与收合状态之间转换，所述车架包括推把、前脚、后脚、第一连接件、第二连接件、支承件以及第三连接件，所述支承件被设置为供宠物篮连接；所述第一连接件与第二连接件的上侧枢接于推把的不同位置，下侧枢接于后脚的不同位置；所述前脚后侧与后脚枢接或与后脚前侧、第一连接件下侧同轴枢接；所述第三连接件下侧枢接于前脚，上侧与支承件枢接，所述支承件还与第二连接件枢接。要收合所述车架时，使得推把下侧往后下方旋转，车架其他组件即会被联动旋转，直至车架完全收合，各组件相对靠近。如此推车车架其他组件联动顺畅，而且收合后车架整体体积小，便于携带、存放。
This utility model discloses a stroller frame and a stroller equipped with the frame. The frame can switch between an unfolded state and a folded state. The frame includes a push handle, front legs, rear legs, a first connecting member, a second connecting member, a support member, and a third connecting member. The support member is configured for connecting to a pet basket. The upper sides of the first and second connecting members are pivotally connected to different positions of the push handle, and the lower sides are pivotally connected to different positions of the rear legs. The rear side of the front leg is pivotally connected to the rear leg or coaxially pivotally connected to the front side of the rear leg and the lower side of the first connecting member. The lower side of the third connecting member is pivotally connected to the front leg, and the upper side is pivotally connected to the support member. The support member is also pivotally connected to the second connecting member. To fold the frame, the lower side of the push handle is rotated backward and downward, and the other components of the frame are rotated in conjunction until the frame is fully folded and the components are relatively close. In this way, the other components of the stroller frame move smoothly together, and the overall size of the frame is small when folded, making it easy to carry and store.
Description
Technical Field
The utility model relates to the field of trolley products, in particular to a trolley frame and a trolley with the trolley frame.
Background
The trolley is widely applied in daily life, and the frame of some trolleys is matched with the child seat, so that the trolley can be used as a child trolley, and parents can take the child out of the trolley. In addition, the more people in keeping with pets, the more people originally go out by pushing the pets through the cart. The pet car is provided with a pet basket on the car frame, the pet is placed in the pet basket, and the pet owner pushes the cart to move forward.
In order to make the cart more convenient to use, the frame of the cart is arranged to be foldable, and the volume of the folded frame is smaller than that of the folded frame when the cart is unfolded, so that the cart is more convenient to carry (such as placed on a cart, a ship or the like), and the volume occupied by the folded frame when the cart is folded is smaller than that when the cart is unfolded when the cart is not used at ordinary times.
At present, various types of cart frame structures are on the market, but the frame of some carts is linked or not in order when folding, so that folding operation is complex and laborious, and the volume after folding is not small enough, so that the cart frame is not convenient to carry and carry.
Disclosure of utility model
The utility model aims to overcome the defects and provide a trolley frame and a trolley with the same, wherein the components are smoothly linked during the folding and the volume is small after the folding.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
The trolley frame can be switched between an unfolding state and a folding state, and comprises a push handle, a front foot, a rear foot, a first connecting piece, a second connecting piece, a supporting piece and a third connecting piece, wherein the upper sides of the first connecting piece and the second connecting piece are pivoted at different positions of the push handle, the lower sides of the first connecting piece and the second connecting piece are pivoted at different positions of the rear foot, so that the push handle, the first connecting piece, the second connecting piece and the rear foot form a four-bar structure, the rear side of the front foot is pivoted with the rear foot or pivoted with the first connecting piece or pivoted with the front side of the rear foot or pivoted with the lower side of the first connecting piece coaxially, the lower side of the third connecting piece is pivoted with the front foot, the upper side of the third connecting piece is pivoted with the supporting piece, and the supporting piece is pivoted with the second connecting piece.
The pivot position of the support piece and the third connecting piece is positioned at the rear side of the pivot position of the support piece and the front foot.
The front foot rear side is pivoted with the rear foot in a rotating way around a first rotating shaft, or the front foot rear side is pivoted with the front side of the rear foot and the lower side of the first connecting piece in a coaxial way around the first rotating shaft, the lower side of the third connecting piece is pivoted with the front foot in a rotating way around a second rotating shaft, and the first rotating shaft is positioned at the rear side of the second rotating shaft when the frame is in a unfolding state.
The upper side of the first connecting piece is rotationally pivoted with the pushing handle around a third rotating shaft, the upper side of the second connecting piece is rotationally pivoted with the pushing handle around a fourth rotating shaft, and the third rotating shaft is positioned on the upper side of the fourth rotating shaft when the frame is in an unfolding state.
An elastic resetting piece is arranged among any two of the push handle, the front foot, the rear foot, the first connecting piece, the second connecting piece, the supporting piece and the third connecting piece, and is in a tensioning state when the frame is in a unfolding state.
The elastic resetting piece is arranged into a tension spring, the push handle is provided with a first connecting part, the second connecting part is provided with a second connecting part, one end of the tension spring is connected with the first connecting part when the frame is in an unfolding state, the other end of the tension spring downwards bypasses the fourth rotating shaft and is then upwards connected with the second connecting part, or one side of the second connecting part, which faces the push handle, is convexly provided with an extending part, the fourth rotating shaft penetrates through the extending part and is pivoted with the push handle, and the other end of the tension spring downwards bypasses the extending part and is then upwards connected with the second connecting part.
The second connecting piece is provided with a containing cavity towards one side of the pushing handle, the second connecting part is arranged in the containing cavity, a guiding space is arranged in the containing cavity, and the other end of the tension spring enters the containing cavity to be connected with the second connecting part.
The rear lower side of the rear foot is connected with a rear wheel, and the frame is arranged in a state that the rear wheel and the lower end of the push handle or/and the second connecting piece or/and the first connecting piece are supported on the supporting surface in a folding state.
The lower end face of the push handle or/and the upper end face of the first connecting piece or/and the upper end face of the second connecting piece are provided with grains, and preferably, the lower end of the push handle or/and the upper end of the first connecting piece or/and the upper end of the second connecting piece is detachably connected with a supporting part, and the grains are arranged on the upper end face of the supporting part.
A stroller comprising the frame, preferably the support member is configured to be coupled to a pet basket, a child seat, and a child sleeping box, preferably the stroller further comprises a pet basket attached to the support member, preferably the pet basket is also configured to be convertible between an expanded configuration and a collapsed configuration, preferably the stroller further comprises a child seat coupled to the support member, preferably the stroller further comprises a child sleeping box coupled to the support member.
By adopting the technical scheme, the utility model has the following beneficial effects:
When the folding bicycle frame is folded, all components of the bicycle frame are linked and rotated smoothly, so that the folding operation is simple and convenient and labor-saving, and the whole volume of the folded bicycle frame is small, so that the folded bicycle frame is convenient to carry and store;
The elastic reset piece is arranged, so that when the frame is folded, the restoring force of the elastic reset piece can enable all components of the frame to automatically rotate in a linkage way to fold the whole frame, and the folding operation of the frame is simpler and more convenient and saves labor;
After the folding, the second connecting piece and the rear wheel are mutually supported on the ground, so that the whole frame is in a standing state after the folding, and the moving operation after the folding is convenient;
Because the support piece for connecting the pet basket is folded along with other components of the frame when the frame is folded, the frame is correspondingly folded together with the other components of the frame when the frame is folded, and the linked pet basket is relatively close to the other components of the frame, so that the whole folding operation of the cart is simpler and more convenient.
Drawings
FIG. 1 is a schematic plan view of a stroller frame of the present utility model in an unfolded state;
FIG. 2 is a perspective view of the stroller frame of the present utility model in an unfolded state;
FIG. 3 is a schematic plan view of the frame of the cart of the present utility model during folding;
FIG. 4 is a perspective view of the frame of the cart of the present utility model during folding;
FIG. 5 is a schematic plan view of the frame of the stroller after folding;
FIG. 6 is a perspective view of the frame of the cart of the present utility model after being collapsed;
FIG. 7 is an enlarged schematic view according to portion A of FIG. 2;
FIG. 8 is an enlarged schematic view of an explosion according to portion A of FIG. 2;
FIG. 9 is an enlarged schematic view according to section B of FIG. 6;
FIG. 10 is another embodiment of the resilient return member of the cart according to the present utility model;
FIG. 11 is a schematic plan view of the cart frame and pet basket of the present utility model in combination;
fig. 12 is a perspective view of the cart frame and pet basket of the present utility model in combination.
Detailed Description
As shown in fig. 1 to 6, the present utility model discloses a cart frame 100 capable of being converted between an unfolded state and a folded state, wherein the cart frame 100 comprises a push handle 1, a front foot 2, a rear foot 3, a first connecting piece 4, a second connecting piece 5, a supporting piece 6 and a third connecting piece 7, the upper sides of the first connecting piece 4 and the second connecting piece 5 are pivoted at different positions of the push handle 1, the lower sides of the first connecting piece 4 and the second connecting piece 5 are pivoted at different positions of the rear foot 3, so that the push handle 1, the first connecting piece 4 and the second connecting piece 5 are formed into a four-bar structure, the rear sides of the front foot 2 are pivoted with the rear foot 3 or pivoted with the first connecting piece 4 or pivoted with the front sides of the rear foot 3 and the lower sides of the first connecting piece 4 coaxially, that is, in the front foot 2, the rear sides of the front foot 2 and the rear foot 3 and the first connecting piece 4 can be pivoted with the rear foot 3 or the lower sides of the supporting piece 4 coaxially pivoted with the front foot 3 and the lower sides of the supporting piece 6.
The pivot position of the support member 6 and the third connecting member 7 is located at the rear side of the pivot position of the support member 6 and the forefoot 2.
The rear side of the front foot 2 is pivoted to the rear foot 3 in a rotating manner around a first rotating shaft 21, or the rear side of the front foot 2 is pivoted to the front side of the rear foot 3 and the lower side of the first connecting piece 4 in a coaxial manner around the first rotating shaft 21, the lower side of the third connecting piece 7 is pivoted to the front foot 2 in a rotating manner around a second rotating shaft 22, and the first rotating shaft 21 is positioned at the rear side of the second rotating shaft 22 when the frame 100 is in a unfolded state.
The upper side of the first connecting piece 4 is pivoted with the push handle 1 in a rotating way around a third rotating shaft 11, the upper side of the second connecting piece 5 is pivoted with the push handle 1 in a rotating way around a fourth rotating shaft 12, and when the frame 100 is in a unfolded state, the third rotating shaft 11 is positioned on the upper side of the fourth rotating shaft 12.
The lower side of the second connecting member 5 is pivotally connected to the rear foot 3 in a rotating manner about a fifth rotation axis 32, the lower side of the first connecting member 4 is pivotally connected to the rear foot 3 in a rotating manner about a sixth rotation axis 31, or when the rear side of the front foot 2 is pivotally connected to the front side of the rear foot 3 and the lower side of the first connecting member 4 in a coaxial manner about a first rotation axis 21, the sixth rotation axis 31 or the first rotation axis 21 is located at the front side of the fifth rotation axis 32 when the frame 100 is in the unfolded state.
The frame 100 further includes a pivot seat 8, in this embodiment, the pivot seat 8 is fixedly connected to the front side of the rear leg 3, the lower side of the first connecting member 4 and the rear side of the front leg 2 are both pivotally connected to the pivot seat 8, and further, the lower side of the first connecting member 4 and the rear side of the front leg 2 are both pivotally connected to different positions of the pivot seat 8. Preferably, the pivot position between the lower side of the first connecting piece 4 and the pivot seat 8 is located at the upper side of the pivot position between the front foot 2 and the pivot seat 8, specifically, the lower side of the first connecting piece 4 is pivoted to the upper side of the pivot seat 8, and the rear side of the front foot 2 is pivoted to the front lower side of the pivot seat 8. Because the pivot seat 8 is fixedly connected with the rear leg 3, the rear leg 3 and the pivot seat 8 can be regarded as a whole, and the first connecting piece 4 and the front leg 2 are pivoted on the pivot seat 8, so that the purpose of pivoting with the rear leg 3 is also realized. In other embodiments, the pivot seat 8 may be fixedly connected to the lower side of the first connecting member 4, and the rear side of the front leg 2 and the front side of the rear leg 3 are pivoted to the pivot seat 8, or the pivot seat 8 may be fixedly connected to the rear side of the front leg 2, so that the front leg 2 and the pivot seat 8 are integrally formed, and the integrally forms a pivot with the first connecting member 4 and the rear leg 3. That is, one of the lower side, the front side of the rear foot, and the rear side of the front foot of the first connecting piece 4 is fixedly connected with the pivot seat, and the other two are pivoted with the pivot seat.
The front lower side of the front foot 2 is connected with a front wheel 20, and the rear lower side of the rear foot 3 is connected with a rear wheel 30.
In this embodiment, the cart frame 100 of the present utility model includes left and right side brackets, each side bracket includes the push handle 1, the front leg 2, the rear leg 3, the first connecting member 4, the second connecting member 5, and the third connecting member 7, and the supporting member 6 is connected between the two sides, that is, the left and right sides of the supporting member 6 are pivoted to the upper side of the third connecting member 7 and the upper side of the second connecting member 5 on the same side respectively.
In the present embodiment, two front wheels 20 are provided at a left-right interval, and two rear wheels 30 are provided at a rear side left-right interval, so that the stroller frame of the present utility model is formed in a four-wheel form. In other embodiments, the lower sides of the front legs 2 of the two side brackets may be connected by a front transverse connector 23, and the left and right front wheels 20 are connected to the front transverse connector 23 at intervals, or a front wheel 20 is connected to the middle of the front transverse connector, so as to form a tricycle with a front wheel 20 and a rear wheel 30. In still another embodiment, the lower sides of the rear legs 3 of the two side brackets may be connected by a rear transverse connector, to which the left and right rear wheels 30 are connected at intervals, or one rear wheel 30 is connected to the middle of the rear transverse connector, thereby forming a tricycle form of the front two front wheels 20 and the rear one rear wheel 30. That is, the number and arrangement positions of the front wheels 20 and the rear wheels 30 can be adjusted as needed.
When the frame 100 is to be folded, as shown in fig. 3 and 4, the lower side of the push handle 1 rotates backward and downward, so that the first connecting piece 4 and the second connecting piece 5 are driven to rotate backward and downward and approach the rear leg 3, the backward and downward rotation of the second connecting piece 5 pulls the rear side of the supporting piece 6 to rotate backward and downward and approach the rear leg 3, the rotating movement of the supporting piece 6 pulls the upper side of the third connecting piece 7 to rotate backward and downward, and the front leg 2 is pulled to rotate backward and approach the rear leg 3, and thus, all the components rotate in a linkage manner, until all the components can not move relatively, and the frame 100 is folded. In the folded state, the push handle 1, the front leg 2, the rear leg 3, the first connecting piece 4, the second connecting piece 5, the supporting piece 6 and the third connecting piece 7 are all close (as shown in fig. 5 and 6), so that the size of the folded frame 100 is small, and the carrying and the storage are convenient.
Preferably, an elastic restoring member 9 is disposed between any two of the push handle 1, the front leg 2, the rear leg 3, the first connecting member 4, the second connecting member 5, the supporting member 6 and the third connecting member 7, and when the frame 100 is in the unfolded state, the elastic restoring member 9 is in a tensioned state. When the frame 100 is folded, the restoring force of the elastic restoring piece 9 can enable all components of the frame to automatically rotate in a linkage mode to enable the whole frame 100 to be folded, and therefore folding operation of the frame 100 is more convenient and labor-saving.
In one embodiment, as shown in fig. 7 to 9, the elastic restoring member 9 is provided as a tension spring 9, and two ends of the tension spring 9 are respectively connected to the push handle 1 and the second connecting member 5. Specifically, the push handle 1 is provided with a first connecting portion 13, the second connecting member 5 is provided with a second connecting portion 51, when the frame 100 is in an unfolded state, one end of the tension spring 9 is connected to the first connecting portion 13, the other end of the tension spring bypasses the fourth rotating shaft 12 downwards and is then connected to the second connecting portion 51 upwards, or an extending portion 52 is convexly arranged on one side of the second connecting member 5 facing the push handle 1, the fourth rotating shaft 12 passes through the extending portion 52 and is pivoted with the push handle 1, and the other end of the tension spring 9 bypasses the extending portion 52 downwards and is then connected to the second connecting portion 51 upwards, so that the tension spring 9 is pulled out and is in a tensioning state. In the folding process, the second connecting piece 5 rotates around the fourth rotating shaft 12 relative to the push handle 1, and the part of the second connecting piece 5 provided with the second connecting part 51 rotates backward and downward, so that the distance between the first connecting part 13 and the second connecting part 51 in the extending direction of the tension spring 9 is shortened, even if no force is applied to any component of the frame 100 any more, the tensioned tension spring 9 can enable the push handle 1 and the first connecting piece 4 to rotate automatically relative to each other due to the restoring force of the tension spring 9, and other components are driven to link to fold the frame 100.
Preferably, a receiving cavity 54 is provided on a side of the second connecting member 5 facing the push handle 1, the second connecting portion 51 and the extending portion 52 are both disposed in the receiving cavity 54, if the extending portion 52 is not provided, the fourth rotating shaft 12 will be partially located in the receiving cavity 54, and the other end of the tension spring 9 enters the receiving cavity 54 to bypass the fourth rotating shaft 12 or the extending portion 52 and then is connected with the second connecting portion 51. So set up, under the state of expanding, extension spring 9 leak outward to avoid influencing its pulling frame 100 each subassembly automatic linkage function of closing.
In other embodiments, the tension spring can be connected between any other two relatively rotatable frames by a similar principle. As shown in fig. 10, one end of the tension spring 9 ́ is connected to the pivot seat 8, the other end is connected to the third connecting member 7, and specifically, the other end of the tension spring 9 ́ is connected to the lower side of the third connecting member 7. Similarly, when the frame is in the unfolded state, the tension spring 9 ́ is in the tensioned state. Therefore, in the process of folding the frame, the tension spring 9 ́ can also assist the frame to be folded automatically.
Or the elastic restoring member 9 may be a torsion spring, two ends of the torsion spring are respectively connected between two of the two frames, and in the same way, the torsion spring is in a torsion and tension state when the frame is in an unfolding state. The elastic reset piece can be also arranged as other feasible elastic pieces and connected between the two parts which can rotate relative to each other at will, so long as the functions can be realized.
Preferably, the frame 100 is configured such that, in the retracted state, the rear wheel 30 is supported on the support surface together with the lower end of the handlebar 1 or/and the second connecting member 5 or/and the first connecting member 4. The supporting surface is generally referred to as a place where the frame is folded when the frame is folded on a road, the ground is the supporting surface, the rear wheel 30 and the lower end of the push handle 1 or/and the second connecting piece 5 or/and the first connecting piece 4 are supported on the ground, the ground is the supporting surface when the frame 100 is folded and placed at home, and the table is the supporting surface when the frame 100 is folded and placed on the table of a table. And the like, are not listed here. That is, in the folded state of the frame 100, any one of the lower end of the push handle 1, the lower end of the first link 4 (the lower end of the first link 4 in the folded state is the upper end of the first link 4 in the unfolded state of the frame), and the lower end of the second link 5 (the lower end of the second link 5 in the folded state is the upper end of the second link 5 in the unfolded state of the frame) may be supported on the support surface together with the rear wheel 30, or both of the rear wheel 30 and the first link 4 may be supported on the support surface together with the rear wheel 30 and the third link 5. By the arrangement, the whole frame 100 is in a standing state after being folded, rather than a state of lying on the ground, so that the folded frame is convenient to carry.
The lower end face of the push handle 1 or/and the upper end face of the first connecting piece 4 or/and the upper end face of the second connecting piece 5 are provided with grains, so that after the frame 100 is folded, the lower end of the push handle 1 or/and the upper end of the first connecting piece 4 or/and the upper end of the second connecting piece 5 rotate backwards and downwards to be supported on a supporting surface together with the rear wheel 30, friction force between the second connecting piece 5 and the supporting surface is larger due to the arrangement of the grains, and the frame 100 is not easy to slide after being folded, and is convenient to operate.
Preferably, the lower end of the push handle 1 and/or the upper end of the first connecting piece 4 and/or the upper end of the second connecting piece 5 are/is detachably connected with a supporting portion 55, and the grains are arranged on the upper end face of the supporting portion 55. In this way, even if the supporting portion 55 is worn out by contact with the ground after a long period of use, only the new supporting portion 55 is replaced, and the entire lower end of the push handle 1 and/or the upper end of the first connecting member 4 and/or the second connecting member 5 are not replaced.
In this embodiment, in the folded state, the rear wheel 30 and the second connecting member 5 are supported on the supporting surface, and the supporting portion 55 is connected to the upper end of the second connecting member 5.
Further, a connecting seat 50 is fixedly connected to the upper side of the second connecting piece 5, and the second connecting piece 5 is pivoted with the push handle 1 through the connecting seat 50 to achieve the purpose of pivoting the second connecting piece 5 with the push handle 1. The second connecting portion 51, the accommodating cavity 54, and the extending portion 52 are disposed on the connecting base 50, and the supporting portion 55 is also connected to the connecting base 50.
The frame 100 is further provided with a frame 100 locking mechanism for locking the frame 100 in a unfolded state, and the frame 100 locking mechanism can be arranged between the push handle 1, the front foot 2, the rear foot 3, the first connecting piece 4, the second connecting piece 5, the supporting piece 6 and the third connecting piece 7 which are arbitrarily pivoted, and can be used for folding and unfolding the frame 100 after unlocking. The specific structure and unlocking operation of the locking mechanism of the frame 100 may be any known and feasible structure, and are not the utility model, and thus are not described herein.
In the present embodiment, the front wheel 20 is provided rotatably 360 degrees around a vertical axis with respect to the front foot 2, and an orientation mechanism is provided between the front foot 2 and the front wheel 20. In the unfolded use state of the cart frame, the front wheel 20 can be locked in a state that the front wheel 20 cannot rotate 360 degrees around the vertical shaft relative to the front foot 2 through the orientation mechanism, and the orientation mechanism can be unlocked to enable the front wheel 20 to rotate 360 degrees around the vertical shaft relative to the front foot 2. In the folded state, the orientation mechanism may be unlocked, so that the front wheel 20 rotates to a suitable angle relative to the front foot 2, so that the front foot 2 and the front wheel 20 may be closer to the rear foot 3, and the overall volume of the folded frame 100 is smaller. The orientation mechanism of the front wheel 20 may be any known and feasible structure, and is not an utility model point of the present utility model, and is not described herein.
The utility model also discloses a trolley comprising the frame, the support 6 being arranged to be connectable with a pet basket, a child seat, a child sleeping box.
As shown in fig. 11 and 12, the cart of the present utility model further comprises a pet basket 200, said pet basket 200 being attached to said support member 6.
The pet basket 200 is also configured to be convertible between an unfolded state and a folded state, and when the pet vehicle of the present utility model is folded, the pet basket 200 can be folded first to be close to the supporting member 6 as a whole, and then the frame 100 is folded, so that the folded pet basket 200 does not interfere with the push handle 1. Moreover, because the supporting piece 6 for connecting the pet basket 200 is folded along with other components of the frame 100 when the frame 100 is folded, the folding operation of the cart is simpler and more convenient than the folding operation of the frame 100 by linking the pet basket to be folded along with other components of the frame 100 when the frame 100 is folded.
The specific structure of the pet basket, the manner of this and the specific connection of the pet basket with the support 6 can be any known and feasible structure, and is not the utility model and is not described herein.
In other embodiments, the inventive stroller further comprises a child seat attached to the support member, or alternatively, the inventive stroller further comprises a child sleeper compartment attached to the support member. Further, the pet basket, child seat, child sleeping box are detachably connected to the support 6. The connection of the child seat, child sleeping box and support 6 may be of any known and feasible construction.
It will be appreciated by those skilled in the art that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "front", "rear", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, merely to facilitate description of the embodiments of the present utility model and to simplify the description, rather than to indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, which will also be correspondingly changed when the viewing vision is changed, and thus should not be construed as limiting the present utility model.
The foregoing describes the embodiments of the present utility model in detail, but the description is only a preferred embodiment of the present utility model and should not be construed as limiting the scope of the utility model. All equivalent changes and modifications within the scope of the present utility model are intended to be covered by the present utility model.
Claims (24)
1. The trolley frame is characterized by comprising a push handle, a front foot, a rear foot, a first connecting piece, a second connecting piece, a supporting piece and a third connecting piece, wherein the upper sides of the first connecting piece and the second connecting piece are pivoted at different positions of the push handle, the lower sides of the first connecting piece and the second connecting piece are pivoted at different positions of the rear foot, the push handle, the first connecting piece, the second connecting piece and the rear foot form a four-bar structure, the rear side of the front foot is pivoted with the rear foot or pivoted with the front side of the rear foot or pivoted with the lower side of the first connecting piece coaxially, the lower side of the third connecting piece is pivoted with the front foot, the upper side of the third connecting piece is pivoted with the supporting piece, and the supporting piece is pivoted with the second connecting piece.
2. The cart frame of claim 1, wherein the pivot location of the support member to the third link member is located rearward of the pivot location of the support member to the forefoot.
3. The cart frame of claim 2, wherein the front and rear sides are pivotally connected to the rear leg about a first pivot axis, or wherein the front and rear sides are pivotally connected to the front side of the rear leg and the lower side of the first connector about the first pivot axis, and wherein the lower side of the third connector is pivotally connected to the front leg about a second pivot axis, the first pivot axis being located at the rear side of the second pivot axis when the cart frame is in the extended position.
4. The cart frame of claim 1, 2 or 3, wherein the upper side of the first connector is rotatably pivoted to the pushing handle about a third axis of rotation, and the upper side of the second connector is rotatably pivoted to the pushing handle about a fourth axis of rotation, the third axis of rotation being located above the fourth axis of rotation when the cart frame is in the deployed state.
5. A stroller frame according to any one of claims 1 to 3, further comprising a pivot mount, wherein one of the first connector underside, the rear foot front side, the front foot rear side is fixedly connected to the pivot mount, and the other is pivotally connected to the pivot mount.
6. The cart frame of claim 5, wherein the pivot mount is fixedly coupled to a front side of the rear leg, the lower side of the first connector is pivotally coupled to an upper side of the mount, and the rear side of the front leg is pivotally coupled to a front lower side of the pivot mount.
7. The cart frame of any one of claims 1 to 3 or 6, wherein an elastic return member is disposed between any two of the push handle, the front foot, the rear foot, the first connector, the second connector, the support member, and the third connector, and wherein the elastic return member is in a tensioned state when the cart frame is in a deployed state.
8. The cart frame of claim 7, wherein the elastic restoring member is provided as a tension spring, one end of the tension spring is connected with the pivot seat, and the other end of the tension spring is connected with the third connecting member.
9. The cart frame of claim 8, wherein the other end of the tension spring is connected to the lower side of the third connecting piece.
10. The cart frame of claim 4, further comprising a pivot mount, wherein one of the lower side of the first connector, the front side of the rear leg, and the rear side of the front leg is fixedly coupled to the pivot mount and the other is pivotally coupled to the pivot mount.
11. The cart frame of claim 10, wherein an elastic return member is disposed between any two of the push handle, the front leg, the rear leg, the first connector, the second connector, the support member, and the third connector, and the elastic return member is in a tensioned state when the cart frame is in a deployed state.
12. The cart frame of claim 11, wherein the elastic restoring member is a tension spring, the pushing handle is provided with a first connecting portion, a second connecting portion is arranged on the second connecting member, one end of the tension spring is connected to the first connecting portion, the other end of the tension spring bypasses the fourth rotating shaft downwards and is then connected with the second connecting portion upwards when the cart frame is in an unfolded state, or an extending portion is convexly arranged on one side, facing the pushing handle, of the second connecting member, the fourth rotating shaft penetrates through the extending portion and is pivoted with the pushing handle, and the other end of the tension spring bypasses the extending portion downwards and is then connected with the second connecting portion upwards.
13. The cart frame of claim 12, wherein a receiving cavity is formed in one side of the second connecting piece, facing the pushing handle, and the second connecting portion is disposed in the receiving cavity, a guiding space is formed in the receiving cavity, and the other end of the tension spring enters the receiving cavity to be connected with the second connecting portion.
14. The cart frame according to any one of claims 1 to 3, 6, 8 to 13, wherein the lower end surface of the pushing handle and/or the upper end surface of the first connecting piece and/or the upper end surface of the second connecting piece are provided with grains.
15. The cart frame of claim 14, wherein the lower end of the pushing handle and/or the upper end of the first connecting piece and/or the upper end of the second connecting piece are/is detachably connected with a supporting part, and the grains are arranged on the upper end face of the supporting part.
16. The cart frame according to any one of claims 1 to 3, 6, 8 to 13 and 15, wherein a rear wheel is connected to the rear lower side of the rear foot, and the cart frame is arranged such that in the collapsed state, the rear wheel and the lower end of the push handle or/and the second connecting member or/and the first connecting member are supported on a supporting surface.
17. The cart frame of claim 7, wherein a rear wheel is connected to the rear lower side of the rear leg, and the cart frame is configured such that, in the collapsed state, the rear wheel and the lower end of the push handle or/and the second connecting member or/and the first connecting member are supported on a support surface.
18. The cart frame of claim 14, wherein a rear wheel is connected to the rear lower side of the rear leg, and the cart frame is configured such that in the collapsed state, the rear wheel and the lower end of the push handle or/and the second connecting member or/and the first connecting member are supported on a support surface.
19. A cart comprising a frame according to any one of claims 1 to 18.
20. The cart of claim 19, wherein the support is configured to be coupled to a pet basket, a child seat, a child sleeping box.
21. The cart of claim 19, wherein the cart is configured to: the cart further includes a pet basket attached to the support member.
22. The cart of claim 20 or 21, wherein the pet basket is also configured to be convertible between an expanded state and a collapsed state.
23. The cart of claim 19, further comprising a child seat coupled to the support member.
24. The cart of claim 19, further comprising a child sleeping bin coupled to the support member.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2024227901975 | 2024-11-14 | ||
| CN202422790197 | 2024-11-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN223494570U true CN223494570U (en) | 2025-10-31 |
Family
ID=97481313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202423029811.2U Active CN223494570U (en) | 2024-11-14 | 2024-12-08 | A trolley frame and a trolley equipped with the frame |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN223494570U (en) |
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2024
- 2024-12-08 CN CN202423029811.2U patent/CN223494570U/en active Active
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