WO2021027808A1

WO2021027808A1 - Foldable cart

Info

Publication number: WO2021027808A1
Application number: PCT/CN2020/108395
Authority: WO
Inventors: 崔宽峻
Original assignee: 客贝利(厦门)休闲用品有限公司
Priority date: 2019-08-14
Filing date: 2020-08-11
Publication date: 2021-02-18
Also published as: CN210591994U

Abstract

A foldable cart, comprising a left support (1), a right support (2), front upper connecting rods (3), front lower connecting rods (4), rear upper connecting rods (5), rear lower connecting rods (6), supporting rods (7), connecting members (8), sliding members (9), and at least one linkage rod (10). The sliding member (9) is slidably sleeved on one supporting rod (7), separately; the other ends of the front upper connecting rods (3) are rotatably connected to two ends of one connecting member (8), respectively; one end of one supporting rod (7) is fixedly provided in the middle of one connecting member (8); two ends of one of the linkage rods (10) are rotatably connected to the sliding member (9) sleeved on one supporting rod (7) and to one front lower connecting rod (4) or one rear lower connecting rod (6), respectively; the other ends of the rear upper connecting rods (5) are rotatably connected to two ends of the other connecting member (8), respectively; and one end of the other supporting rod (7) is fixedly provided in the middle of the other connecting member (8). The foldable cart has the advantages of being convenient to fold, store, package, and transport.

Description

A foldable cart

Technical field

The invention relates to the technical field of cargo carts, in particular to a foldable cart.

Background technique

A trolley is a small trolley that is convenient for short-distance transportation of small amounts of goods. It is a commonly used tool in daily life, especially leisure, tourism, shopping, delivery, and even business trips.

Existing trolleys generally include a frame, a push rod provided on the frame, and casters provided on the bottom of the frame. However, the existing trolleys generally cannot be folded and folded, are bulky, occupy space, and are inconvenient for storage, packaging, or transportation.

In view of this, the inventor of the present invention has developed and designed the present invention in order to solve the above-mentioned shortcomings and inconveniences.

technical problem

The purpose of the present invention is to provide a foldable cart with convenient folding, simple structure, and convenient storage, packaging and transportation.

Technical solutions

In order to achieve the above objective, the technical solution of the present invention is: a foldable cart, including: a left bracket, a right bracket, two front upper connecting rods, two front lower connecting rods, two rear upper connecting rods, and two rear The lower connecting rod, two supporting rods, two connecting pieces, at least one sliding piece and at least one connecting rod, the sliding piece is slidably sleeved on one of the supporting rods, and the lower ends of the left bracket and the right bracket are provided There are casters; one end of the front upper connecting rod is rotatably connected to the left and right brackets, the other end of the front upper connecting rod is rotatably connected to both ends of one of the connecting pieces, the front lower One end of the connecting rod is rotatably connected to the left and right brackets, one end of one of the support rods is fixed to the middle of one of the connecting pieces, and the other end of the front lower connecting rod is respectively rotatably connected to one of the supports The other end of the rod, the two ends of one of the linkage rods are respectively rotatably connected to the sliding member sleeved on one of the supporting rods and one of the front and lower connecting rods or one of the rear and lower connecting rods; One end of the connecting rod is respectively rotatably connected to the left and right brackets, the other end of the rear upper connecting rod is respectively rotatably connected to both ends of the other connecting piece, and one end of the rear lower connecting rod is respectively rotatable The ground is connected to the left support and the right support, one end of the other support rod is fixed at the middle of the other connecting piece, and the other end of the rear lower connecting rod is respectively rotatably connected to the other end of the other support rod.

A foldable stroller also includes a plurality of bottom support rods evenly spaced apart, and two ends of the bottom support rod are respectively connected and fixed between the front lower connecting rod and the rear lower connecting rod.

A foldable cart further includes a retractable push rod, the lower end of the push rod is rotatably fixed to the lower end of the left bracket, and the upper end of the left bracket is fixedly provided with a clamping member capable of clamping the push rod.

The number of the casters is four, two of which are fixed on the lower end of the right bracket through the caster frame, and the other two casters are fixed on the lower end of the left frame and the lower end of the push rod through the caster frame, and the casters are arranged in a staggered manner .

The number of the linkage rods is four, and one end of each two linkage rods is respectively rotatably connected to both sides of the sliding member, wherein the other end of the two linkage rods is respectively rotatably connected to the front lower connecting rod, and the other The other ends of the two linkage rods are respectively rotatably connected to the lower rear connecting rod.

A foldable cart, comprising: a left support, a right support, two front upper connecting rods, two front lower connecting rods, two rear upper connecting rods, two rear lower connecting rods, two supporting rods, two connecting pieces, at least A sliding member and at least one linkage rod, the sliding member is slidably sleeved on one of the supporting rods, the lower ends of the left bracket and the right bracket are provided with casters; one end of the front upper connecting rod can be It is rotatably connected to the left bracket and the right bracket, the other end of the front upper connecting rod is rotatably connected to both ends of one of the connecting pieces, and one end of the front lower connecting rod is rotatably connected to the left bracket and In the right bracket, one end of one of the support rods is fixed at the middle of one of the connecting members, the other end of the front and lower connecting rod is respectively rotatably connected to the other end of one of the support rods, and both ends of one of the linkage rods Are respectively rotatably connected to the sliding member sleeved on one of the support rods and one of the front upper connecting rods or one of the rear upper connecting rods; one end of the rear upper connecting rod is respectively rotatably connected to the left bracket and Right bracket, the other end of the upper rear connecting rod is rotatably connected to both ends of the other connecting piece, one end of the lower rear connecting rod is rotatably connected to the left bracket and the right bracket, and the other support rod One end of the rear lower connecting rod is fixed to the middle of the other connecting piece, and the other end of the rear lower connecting rod is respectively rotatably connected to the other end of the other supporting rod.

The number of the linkage rods is four. One end of each two linkage rods is rotatably connected to both sides of the sliding member, and the other end of the two linkage rods is rotatably connected to the upper front connecting rod. The other ends of the two linkage rods are respectively rotatably connected to the upper rear connecting rod.

Beneficial effect

After adopting the above solution, the present invention adopts the structural design of the front upper connecting rod, the front lower connecting rod, the rear upper connecting rod, the rear lower connecting rod, the supporting rod, the connecting piece, the sliding piece and the linkage rod. Connected by connecting pieces, the rear upper connecting rods are also connected together by connecting pieces, the support rod connecting the connecting piece with the front lower connecting rod or the rear lower connecting rod, the sliding part can slide on the support rod, One end of the linkage rod is connected to the sliding member, the other end of the linkage rod is respectively connected to the front upper connecting rod or the rear upper connecting rod, or the other end of the linkage rod is respectively connected to the front lower connecting rod or the rear lower connecting rod Therefore, when the present invention needs to be folded, the user lifts up the connecting piece, the upper front connecting rod and the upper rear connecting rod pull the left bracket and the right bracket toward each other, and the support rod pulls the front lower connecting rod and the rear lower connecting rod. The other end of the connecting rod is lifted up, and the front lower connecting rod and the rear lower connecting rod pull the left bracket and the right bracket toward each other, so that the connecting rod gradually approaches the support rod until it is completely folded. Therefore, the present invention has convenient folding and structure Simple and convenient for storage, packaging and transportation.

Description of the drawings

Fig. 1 is a use state diagram of the first embodiment of the present invention.

Fig. 2 is a perspective view of the first embodiment of the present invention.

Fig. 3 is a schematic view of the folding of the first embodiment of the present invention.

4 is a perspective view of the first embodiment of the present invention after being folded.

Fig. 5 is a front view of Fig. 2.

Fig. 6 is a front view of Fig. 3.

Fig. 7 is a front view of Fig. 4.

Figure 8 is a perspective view of the second embodiment of the present invention.

Fig. 9 is a front view of Fig. 8.

Fig. 10 is a schematic view of the folding of the second embodiment of the present invention.

Explanation of symbols : left bracket 1, right bracket 2, front upper connecting rod 3, front lower connecting rod 4, rear upper connecting rod 5, rear lower connecting rod 6, support rod 7, connecting piece 8, sliding piece 9, linkage rod 10. Caster 11, caster frame 12, bottom support rod 13, push rod 14, single rod 141, button seat 142, handle 143, clamp 01, enclosure 02.

Embodiments of the invention

In order to achieve the above-mentioned objectives and effects, the technical means and structure adopted by the present invention are illustrated in detail below to illustrate the characteristics and functions of the preferred embodiments of the present invention for a complete understanding.

Embodiment 1 : Please refer to Figures 1 to 7. The present invention discloses a foldable stroller, including: a left bracket 1, a right bracket 2, two front upper connecting rods 3, two front lower connecting rods 4 , Two rear upper connecting rods 5, two rear lower connecting rods 6, two supporting rods 7, two connecting pieces 8, at least one sliding piece 9 and at least one linkage rod 10, the sliding pieces 9 are respectively slidably sleeved On one of the support rods 7, the lower ends of the left support 1 and the right support 2 are provided with casters 11; one end of the front upper connecting rod 3 is rotatably connected to the left support 1 and the right support 2, respectively. The other end of the connecting rod 3 is respectively rotatably connected to the two ends of one of the connecting members 8. One end of the front and lower connecting rod 4 is respectively rotatably connected to the left bracket 1 and the right bracket 2, and one of the supporting rods 7 One end is fixed in the middle of one of the connecting members 8, the other end of the front lower connecting rod 4 is rotatably connected to the other end of one of the support rods 7, and both ends of one of the linkage rods 10 are rotatably connected. Connected to the sliding member 9 sleeved on one of the supporting rods 7 and one of the front lower connecting rods 4 or one of the rear lower connecting rods 6; one end of the rear upper connecting rod 5 is respectively rotatably connected to the left bracket 1 and the right bracket 2, the other end of the upper rear connecting rod 5 is rotatably connected to both ends of the other connecting member 8, and one end of the lower rear connecting rod 6 is rotatably connected to the left bracket 1 and On the right bracket 2, one end of the other support rod 7 is fixed to the middle of the other connecting member 8, and the other end of the rear lower connecting rod 6 is respectively rotatably connected to the other end of the other support rod 7, when in use As shown in Fig. 1, the enclosure 02 can be fixed in the present invention to prevent the goods from falling out. The connecting member 8 has a U-shaped cross section, and the left bracket 1 and the right bracket 2 are rectangular. When the sliding When the number of members 9 is two, and the number of linkage rods 10 is two, the two ends of one linkage rod 10 can be rotatably connected to the sliding member 9 sleeved on one of the support rods 7 and one of the front The lower connecting rod 4 and the two ends of the other connecting rod 10 can be rotatably connected to the sliding member 9 sleeved on the other supporting rod 7 and one of the rear lower connecting rods 6 respectively.

In this embodiment, the number of the linkage rods 10 can be four, but it is not limited to this. One end of every two linkage rods 10 is rotatably connected to both sides of the sliding member 9, two of which The other end of the movable rod 10 is respectively rotatably connected to the front lower connecting rod 4, and the other ends of the other two connecting rods 10 are respectively rotatably connected to the rear lower connecting rod 6, so that the folding of the present invention can be faster And smooth.

Furthermore, the present invention may also include a plurality of bottom support rods 137 evenly spaced apart. The two ends of the bottom support rods 137 are respectively connected and fixed between the front lower connecting rod 4 and the rear lower connecting rod 6 to improve the bottom of the present invention. Support strength.

Furthermore, in order to facilitate the promotion of the present invention and improve the convenience of use of the present invention, the present invention may also include a retractable push rod 14. The lower end of the push rod 14 is rotatably fixed to the lower end of the left bracket 1. The upper end of the left bracket 1 is fixedly provided with a clamp 01 that can clamp the push rod 14. When the present invention needs to be folded, the push rod 14 can be clamped in the clamp 01. In order to facilitate the user to hold and push the present invention, The upper end of the push rod 14 may be fixedly provided with a handle 143, wherein the push rod 14 may include two single rods 141 inserted into each other and a button seat 142. The user can press the button on the button seat 142, Retract one of the single rods 141 into the other single rod 141 to realize the contraction of the push rod 14. When it is necessary to use, pull one of the single rods 141 out of the other single rod 141 to the designated position, using the button of the button seat 142 The ejection positions and fixes the two single rods 141.

In this embodiment, the number of the casters 11 can be four. Two casters 11 are fixed to the lower end of the right bracket 2 through a caster frame 12, and the other two casters 11 are fixed to the left bracket 1 through a caster frame 12. The lower end and the lower end of the push rod 14 are arranged in a staggered manner between the casters 11, so that when the present invention is folded, the casters 11 can be arranged in staggered side by side, further reducing the volume of the present invention after folding.

Embodiment 2 : Please refer to Figures 8 to 10, the present invention discloses a foldable stroller. The difference between this embodiment and the first embodiment is: in this embodiment, two of the linkage rods 10 The ends are respectively rotatably connected to the sliding member 9 sleeved on one of the support rods 7 and one of the front upper connecting rods 3 or one of the rear upper connecting rods 5; one end of the rear upper connecting rod 5 is respectively rotatable Ground is connected to the left bracket 1 and the right bracket 2, the other end of the rear upper connecting rod 5 is respectively rotatably connected to both ends of the other connecting member 8, and one end of the rear lower connecting rod 6 is respectively rotatably connected In the left bracket 1 and the right bracket 2, one end of the other support rod 7 is fixed to the middle of the other connecting member 8, and the other end of the rear lower connecting rod 6 is respectively rotatably connected to the other support rod 7 At one end, when the number of the sliding members 9 is two and the number of the linkage rods 10 is two, the two ends of one linkage rod 10 can be rotatably connected to one of the support rods 7 The sliding member 9 and one of the front upper connecting rods 3, and the two ends of the other connecting rod 10 can be respectively rotatably connected to the sliding member 9 sleeved on the other supporting rod 7 and one of the rear upper connecting rods 5 However, in this embodiment, the number of the linkage rods 10 can be four, wherein the other ends of the two linkage rods 10 are rotatably connected to the upper front connecting rod 3, and the other two linkage rods 10 One end is respectively rotatably connected to the upper rear connecting rod 5. The other structure of this embodiment is the same as that of the first embodiment, and will not be repeated here.

To sum up, the present invention adopts the structure of the front upper connecting rod 3, the front lower connecting rod 4, the rear upper connecting rod 5, the rear lower connecting rod 6, the supporting rod 7, the connecting piece 8, the sliding piece 9 and the linkage rod 10. In the design, the front upper connecting rod 3 is connected together by a connecting piece 8, the rear upper connecting rod 5 is also connected together by a connecting piece 8, and the supporting rod 7 connects the connecting piece 8 with the front lower connecting rod 4 or the rear The lower connecting rod 6, the sliding member 9 can slide on the supporting rod 7, one end of the linkage rod 10 is connected to the sliding member 9, and the other end of the linkage rod 10 is respectively connected to the front upper connecting rod 3 or the rear upper The connecting rod 5 or the other end of the connecting rod 10 is respectively connected to the front lower connecting rod 4 or the rear lower connecting rod 6, so that when the present invention needs to be folded, the user lifts up the connecting piece 8. The front upper connecting rod 3 and the upper rear connecting rod 5 pull the left support 1 and the right support 2 toward each other, the support rod 7 pulls the other end of the front lower connecting rod 4 and the rear lower connecting rod 6 up, the front lower connecting rod 4 and The rear lower connecting rod 6 pulls the left support 1 and the right support 2 toward each other, so that the linkage rod 10 gradually approaches the support rod 7 until it is completely folded. Therefore, the present invention has the characteristics of convenient folding, simple structure, and convenient storage, packaging and transportation. , On the contrary, when the present invention needs to be deployed, the user presses down the connecting piece 8, the upper front connecting rod 3 and the upper rear connecting rod 5 push the left bracket 1 and the right bracket 2 away from each other, and the support rod 7 pushes the front and lower connections The other end of the rod 4 and the lower rear connecting rod 6 is pressed down. The lower front connecting rod 4 and the lower rear connecting rod 6 push the left bracket 1 and the right bracket 2 away from each other, so that the linkage rod 10 gradually moves away from the support rod 7 until The linkage rod 10 forms a right triangle support with the support rod 7 and the upper front connecting rod 3, or the linkage rod 10 forms a right triangle support with the support rod 7 and the upper rear connecting rod 5, or the linkage rod 10 and the support The rod 7 and the front lower connecting rod 4 form a right-angled triangle support, or the linkage rod 10 and the supporting rod 7 and the rear lower connecting rod 6 form a right-angled triangle support.

The technical content and technical characteristics of the present invention have been disclosed as above. The composition of the present invention is not limited to the above. The connection between the components of the present invention can be riveted or locked by screws. Those skilled in the art may still be based on the present invention. Various replacements and modifications are made without departing from the creative spirit of the present invention. Therefore, the protection scope of the present invention should not be limited to what is disclosed in the embodiments, but should include various replacements and modifications that do not deviate from the present invention, and are covered by the claims.

Claims

A foldable cart, which is characterized by comprising: a left bracket, a right bracket, two front upper connecting rods, two front lower connecting rods, two rear upper connecting rods, two rear lower connecting rods, two supporting rods, two A connecting piece, at least one sliding piece and at least one linkage rod, the sliding piece is slidably sleeved on one of the supporting rods, and the lower ends of the left bracket and the right bracket are provided with casters;

One end of the front upper connecting rod is rotatably connected to the left and right brackets, and the other end of the front upper connecting rod is rotatably connected to both ends of one of the connecting pieces. One end is rotatably connected to the left bracket and the right bracket, one end of one of the support rods is fixed at the middle of one of the connecting pieces, and the other end of the front lower connecting rod is rotatably connected to the other of one of the support rods. At one end, the two ends of one of the linkage rods are respectively rotatably connected to the sliding member sleeved on one of the supporting rods and one of the front and lower connecting rods or one of the rear and lower connecting rods;

One end of the upper rear connecting rod is rotatably connected to the left bracket and the right bracket, and the other end of the upper rear connecting rod is rotatably connected to both ends of the other connecting member. One end is rotatably connected to the left and right brackets, one end of the other support rod is fixed to the middle of the other connecting piece, and the other end of the rear lower connecting rod is rotatably connected to the other support rod. One end.
The foldable stroller of claim 1, further comprising a plurality of bottom support rods evenly spaced apart, and two ends of the bottom support rod are respectively connected and fixed to the front lower connecting rod and the rear lower connecting rod between.
The foldable stroller of claim 1 or 2, further comprising a retractable push rod, the lower end of the push rod is rotatably fixed on the lower end of the left bracket, A clamping piece capable of clamping the push rod is fixedly arranged on the upper end.
A foldable stroller according to claim 3, characterized in that: the number of casters is four, wherein two casters are fixed to the lower end of the right bracket through a caster frame, and the other two casters are fixed to the lower end of the right bracket through a caster frame. The lower end of the left bracket and the lower end of the push rod are arranged in a staggered manner between the casters.
A foldable stroller according to claim 1, wherein the number of the linkage rods is four, and one end of each two linkage rods is rotatably connected to both sides of the sliding member, and two of the linkage rods The other ends of the rods are respectively rotatably connected to the front lower connecting rod, and the other ends of the other two connecting rods are respectively rotatably connected to the rear lower connecting rod.
A foldable cart, which is characterized by comprising: a left bracket, a right bracket, two front upper connecting rods, two front lower connecting rods, two rear upper connecting rods, two rear lower connecting rods, two supporting rods, two A connecting piece, at least one sliding piece and at least one linkage rod, the sliding piece is slidably sleeved on one of the supporting rods, and the lower ends of the left bracket and the right bracket are provided with casters;

One end of the front upper connecting rod is rotatably connected to the left and right brackets, and the other end of the front upper connecting rod is rotatably connected to both ends of one of the connecting pieces. One end is rotatably connected to the left bracket and the right bracket, one end of one of the support rods is fixed at the middle of one of the connecting pieces, and the other end of the front lower connecting rod is rotatably connected to the other of one of the support rods. At one end, both ends of one of the linkage rods are respectively rotatably connected to the sliding member sleeved on one of the support rods and one of the front upper connecting rods or one of the rear upper connecting rods;

One end of the upper rear connecting rod is rotatably connected to the left bracket and the right bracket, and the other end of the upper rear connecting rod is rotatably connected to both ends of the other connecting member. One end is rotatably connected to the left and right brackets, one end of the other support rod is fixed to the middle of the other connecting piece, and the other end of the rear lower connecting rod is rotatably connected to the other support rod. One end.
A foldable stroller according to claim 6, characterized in that it further comprises a plurality of bottom support rods evenly spaced apart, both ends of the bottom support rods are respectively connected and fixed to the front lower connecting rod and the rear lower connecting rod between.
A foldable stroller according to claim 6 or 7, characterized in that it further comprises a retractable push rod, the lower end of the push rod is rotatably fixed to the lower end of the left bracket, A clamping piece capable of clamping the push rod is fixedly arranged on the upper end.
A foldable stroller according to claim 8, characterized in that: the number of casters is four, wherein two casters are fixed to the lower end of the right bracket through a caster frame, and the other two casters are fixed to the lower end of the right bracket through a caster frame. The lower end of the left bracket and the lower end of the push rod are arranged in a staggered manner between the casters.
The foldable stroller according to claim 6, wherein the number of the linkage rods is four, and one end of each two linkage rods is rotatably connected to both sides of the sliding member, and two of the linkage rods The other ends of the rods are respectively rotatably connected to the upper front connecting rod, and the other ends of the other two connecting rods are respectively rotatably connected to the upper rear connecting rod.