TWI639526B - Cart having telescopic structure - Google Patents

Abstract

The invention discloses a cart with a telescopic structure, comprising: a telescopic rod; a telescopic tube member, the telescopic tube member and at least one of the telescopic rods have a hollow structure as the telescopic tube member and the telescopic rod are folded together The accommodating space is required to connect the end of the telescopic pipe member away from the hollow structure and connect one end of the telescopic rod adjacent to the hollow structure; and the frame is connected to the linkage mechanism; wherein, when the vehicle When the frame is rotated and folded relative to the linkage mechanism, the telescopic tube member is also rotated relative to the linkage mechanism, and the linkage mechanism is used to retract one of the telescopic tube member and the telescopic rod toward the other of the telescopic rod.

Description

Cart with telescopic structure

The invention relates to a cart, in particular a cart having a telescopic structure.

In the prior art, there have been a variety of manually operated carts, for example, one of the stroller frames that can be interlocked to be able to be in an unfolded state and a collapsed state. The stroller frame includes a handle tube, a front leg tube, a rear leg tube, a lateral mount tube, and a central chassis tube, wherein the front leg tube, the rear leg tube, the lateral mount tube, and the central chassis tube are connectable to each other Connected to each other, and the stroller frame further includes a manual opening and closing operation mechanism, which is characterized in that the gear and the rack transmission mechanism are included, and the gear and the rack drive mechanism drive the baby carriage frame to interlock by operating the manual opening and closing operation mechanism. Opening and closing.

Although the known structure also utilizes a gear set to drive the frame to open and close, the known structure can only gradually open and close the stroller frame by a manual operating mechanism, so the operation requires a lot of time and effort, and for the user Not convenient. Therefore, the development of a cart with an automatic telescopic structure is an important and unsolved problem.

In view of the above problems, an object of the present invention is to provide a cart having a telescopic structure, which can automatically retract and retract the cart by using a unique linkage mechanism, thereby making the cart more convenient.

In order to achieve the above object, the present invention provides a cart having a telescopic structure, comprising a telescopic rod; a telescopic tube member, at least one of the telescopic tube member and the telescopic rod having a hollow structure as needed for the telescopic tube member and the telescopic rod to be engaged with each other The accommodating space; the linkage mechanism connects the end of the telescopic pipe member away from the hollow structure, and connects one end of the telescopic rod adjacent to the hollow structure; and the frame and the linkage mechanism; wherein, when the frame is rotated relative to the linkage mechanism At the same time, the telescopic tube member is also rotated relative to the linkage mechanism, and the one of the telescopic tube member and the telescopic rod is retracted to the other by the linkage mechanism.

Preferably, the interlocking mechanism comprises a gear; and at least two rotating members are connected to each other to be relatively rotatable, and the rotating respective members have openings and the opening is provided with a tooth row, the tooth rows are correspondingly arranged and the gears are disposed on the tooth row And engaging with the gear, and driving the gear to rotate when the at least two rotating members are relatively rotated, and one of the rotating members has a first extending portion to connect one end of the telescopic tubular member away from the hollow structure through the first extending portion.

Preferably, the telescopic tube member has a pulley disposed at one end adjacent to the hollow structure and a slide rail disposed in the hollow structure, and the linkage mechanism further includes a first driving member connected to one side of the gear, and the first driving member has a receivable a first transmission member, one end of the first transmission member is connected to the telescopic rod through a pulley; and a second driving member is coupled to the other side of the gear, the second driving member has a second transmission member retractable, and a second One end of the transmission member is connected to the telescopic rod. Wherein, when the telescopic tube member is rotated relative to the linkage mechanism in the first direction, the at least two rotating members are relatively rotated, and the gear is further driven to rotate the first driving member and the second driving member to respectively apply the first transmission member and pull back The second transmission member retracts the telescopic rod along the slide rail toward the telescopic tube.

Preferably, when the telescopic tube member is rotated relative to the linkage mechanism in the second direction, the at least two rotating members are relatively rotated, and the gear is further driven to rotate the first driving member and the second driving member to respectively pull back the first transmission member. And applying the second transmission member to extend the telescopic rod along the sliding rail toward the telescopic tube.

Preferably, the other rotating member has a second extending portion, and the first extending portion and the second extending portion extend in different directions.

Preferably, the frame includes a front frame and a rear frame, and the front wheel and the rear wheel are respectively connected. Wherein, the front frame is connected to the second extension portion, and the rear frame is connected with the linkage mechanism, so that the front frame and the telescopic tube member can be unfolded or folded by the linkage mechanism with respect to the rear frame.

Preferably, the linkage mechanism also has a fixing clip. Wherein, when the angle between the current frame and the telescopic tube member is increased, the telescopic rod protrudes away from the telescopic tube member by the action of the linkage mechanism, and the interlocking mechanism is locked by the fixing clip; and between the current frame and the telescopic tube member When the angle of the clip is reduced, the telescopic rod is retracted toward the telescopic tube by the action of the linkage mechanism, and the interlocking mechanism is locked by the fixing clip.

Preferably, the linkage mechanism is a link set.

Preferably, the telescopic tube member may further include a first telescopic tube member, a second telescopic tube member and a third telescopic tube member. The telescopic rod includes a first telescopic rod, a second telescopic rod and a third telescopic rod, and the linkage group further comprises: a mechanism The main body is respectively connected to the first telescopic tube member, the second telescopic tube member and one end of the third telescopic tube member away from the hollow structure; the auxiliary connecting rod is connected to the mechanism body; and the first connecting rod is respectively connected to the auxiliary connecting rod and the first telescopic rod One end of the hollow structure; a three-joint link connecting the first link; a second link connecting one end of the three-joint link and the second telescopic rod adjacent to the hollow structure; and a third link connecting the three-joint link The third telescopic rod is adjacent to one end of the hollow structure. Wherein, when the first telescopic tube member is rotated in the first direction relative to the mechanism body, the first link is driven by the auxiliary link to rotate the three-joint link, and the second link and the third link are further actuated. The first telescopic rod, the second telescopic rod and the third telescopic rod are respectively retracted, and the angle between the first telescopic tube and the second telescopic tube is reduced.

Preferably, when the first telescopic tube is rotated in the second direction relative to the mechanism body, the first link is driven by the auxiliary link to rotate the three-joint link, and the first link and the second link are further Actuating with the third link to respectively apply the first telescopic rod, the second telescopic rod and the third telescopic rod, and increase an angle between the first telescopic tube and the second telescopic tube.

Preferably, the linkage mechanism further includes an extension link, one end of the extension link is connected to the first link, and the other end of the extension link is connected to the handle, and the handle has a bent portion to connect one end of the first telescopic rod away from the hollow structure. Wherein, when the first telescopic tube member is rotated in a first direction relative to the mechanism body, the handle is rotated toward the first telescopic rod and assists in folding the first telescopic rod through the bending portion; and, when the first telescopic tube member is opposite to the mechanism body When the second direction is rotated, the first telescopic rod protrudes outward relative to the first telescopic tube member, and the handle is rotated away from the first telescopic rod by the bending portion.

Preferably, the second telescopic rod and the third telescopic rod are respectively connected to the front wheel and the rear wheel, and the linkage mechanism further has a fixing card. Wherein, when the angle between the first telescopic tube member and the second telescopic tube member is increased, the first telescopic rod, the second telescopic rod and the third telescopic rod are applied by the linkage mechanism, and are interlocked by the fixed card member. Actuation of the mechanism; and when the angle between the first telescopic tube and the second telescopic tube is reduced, the first telescopic rod, the second telescopic rod and the third telescopic rod are retracted by the action of the linkage mechanism, and the fixing card is passed Lock the linkage mechanism.

As described above, the cart with the telescopic structure provided by the present invention can achieve the effect of automatically retracting the frame through various linkage mechanisms, thereby enabling the user to easily fold and unfold the cart even if only one hand is used. The operation can also be done simply.

10, 20‧‧‧ carts

110‧‧‧ front frame

111, 250‧‧‧ front wheel

120‧‧‧ rear frame

121, 251‧‧‧ rear wheel

130‧‧‧ Telescopic rod

131‧‧‧Handles

140‧‧‧ Telescopic fittings

150‧‧‧Flexible structure

151,200‧‧‧ linkage agencies

152‧‧‧ Gears

153, 154‧‧‧ rotating parts

155, 156‧‧‧ teeth row

157, 162‧‧ ‧ extensions

158, 160‧‧‧ drive parts

159,161‧‧‧ transmission parts

163‧‧‧Shell

164‧‧‧ center axis

165‧‧‧fixed card

170‧‧‧ pedal brake device

210‧‧‧Institutional ontology

211‧‧‧Auxiliary connecting rod

212‧‧‧first connecting rod

213‧‧‧Three joint connecting rod

214‧‧‧second connecting rod

215‧‧‧ third link

216‧‧‧Extension link

220‧‧‧First telescopic pipe fittings

221‧‧‧Second telescopic pipe fittings

222‧‧‧ Third telescopic pipe fittings

230‧‧‧First telescopic rod

231‧‧‧Second telescopic rod

232‧‧‧3rd telescopic rod

240‧‧‧Handle

241‧‧‧Bend

260‧‧‧ 容部

a, b, c, d‧‧‧ joints

D1‧‧‧ first direction

D2‧‧‧ second direction

Θ‧‧‧ angle

The above and other features and advantages of the present invention will be described in detail with reference to the accompanying drawings in which: FIG. 1 is a perspective view of an embodiment of a cart having a telescopic structure according to the present invention. Schematic diagram of the unfolded state of the cart.

2 is a perspective view of an embodiment of a cart having a telescopic structure according to the present invention, and is also a schematic view of a state in which the cart is folded.

Fig. 3 is an exploded view of the interlocking mechanism in the embodiment of the cart having the telescopic structure of the present invention.

Fig. 4 is a perspective view showing the interlocking mechanism in the embodiment of the cart having the telescopic structure of the present invention.

Fig. 5 is a partial cross-sectional view showing the embodiment of the cart having the telescopic structure of the present invention, particularly emphasizing the operation of the telescopic rod, the telescopic tube member and the interlocking mechanism.

Fig. 6 is a partial cross-sectional view showing the embodiment of the cart having the telescopic structure of the present invention, particularly emphasizing the structure of the interlocking mechanism and the connection of the telescopic rod and the telescopic tube.

FIG. 7 is a perspective view of an embodiment of a cart having a telescopic structure according to another embodiment of the present invention, and is also a schematic view of a strolled state of the cart.

Figure 8 is a side elevational view of an embodiment of a cart having a telescoping structure in accordance with the present invention.

FIG. 9 is a schematic view of a first link of an embodiment of a cart having a telescopic structure according to another embodiment of the present invention.

FIG. 10 is a side view of an embodiment of a cart having a telescopic structure according to another embodiment of the present invention, and is also a schematic view of a cart in a micro-retracted state.

11 is a side view of an embodiment of a cart having a telescopic structure according to another embodiment of the present invention, and is also a schematic view of a half-retracted state of the cart.

FIG. 12 is a side view of an embodiment of a cart with a telescopic structure according to another embodiment of the present invention, and is also a schematic view of a fully collapsed state of the cart.

FIG. 13 is a perspective view of an embodiment of a cart with a telescopic structure according to another embodiment of the present invention, and is also a schematic view of a fully collapsed state of the cart.

In order to facilitate the understanding of the features, aspects, and advantages of the present invention and the advantages thereof, the present invention will be described in detail with reference to the accompanying drawings. The drawings used in the drawings are intended to be merely illustrative and supplementary, and are not necessarily a true scale and precise configuration after the implementation of the invention. Therefore, the scope and configuration of the attached drawings should not be construed as limiting the scope of the invention in the actual implementation.

The advantages and features of the present invention, as well as the technical methods of the present invention, will be readily understood by reference to the following embodiments and the accompanying drawings, and the invention may be implemented in various forms and should not be construed as limited An embodiment. Rather, the scope of the present invention is intended to be thorough and complete, and the invention is defined by the scope of the appended claims.

Embodiments of the invention will be described in detail below with reference to the accompanying drawings.

Referring to Fig. 1, there is shown a perspective view of an embodiment of a cart 10 having a telescopic structure of the present invention, which is also a schematic view of the cart 10 in an unfolded state. The cart 10 with the telescopic structure of the present invention comprises a front frame 110, a front wheel 111, a rear frame 120, a rear wheel 121, a telescopic rod 130, a handle 131, a telescopic tube 140, a telescopic structure 150, a linkage mechanism 151, and a fixed card. A piece 165 and a pedaling device 170. Wherein, the components of the cart 10 are arranged symmetrically to the left and right. When the components are fully deployed by the telescopic structure 150, the fixing clip 165 locks the action of the linkage mechanism 151, thereby stabilizing the unfolding structure of the cart 10. On the other hand, the rear frame 120 further has a pedal braking device 170, which can control the movement of the rear wheel 121 by means of a cassette, thereby easily controlling the movement of the cart 10.

The cart 10 having the telescopic structure of the present invention comprises a telescopic rod 130, and the telescopic tube member 140 has at least one of the telescopic tube member 140 and the telescopic rod 130 having a hollow structure as required for the telescopic tube member 140 and the telescopic rod 130 to be engaged with each other. The accommodating space 151 is connected to one end of the telescopic tubular member 140 away from the hollow structure, and is connected to one end of the telescopic rod 130 adjacent to the hollow structure, and the frame (including the front frame 110 and the rear frame 120) is connected with the linkage mechanism 151. . Wherein, when the frame relative to the linkage mechanism 151 is rotated At the time of folding, the telescopic tube member 140 is also rotated relative to the linkage mechanism 151, and the one of the telescopic tube member 140 and the telescopic rod 130 is retracted by the linkage mechanism 151.

Referring to Fig. 2, a perspective view of an embodiment of a cart 10 having a telescopic structure according to the present invention is also a schematic view of a state in which the cart 10 is folded. As shown in FIG. 1, when the actuation restriction of the linkage mechanism 151 is released by the fixing clip 165, the telescopic structure 150 causes the components to be folded inwardly, so that the cart 10 assumes a collapsed state and reduces the volume of the cart 10.

Referring to Fig. 3, there is shown an exploded view of the interlocking mechanism 151 in the embodiment of the cart 10 having the telescopic structure of the present invention. The interlocking mechanism 151 of the present invention includes a gear 152, a rotating member 153, a rotating member 154, a driving member 158, a driving member 160, a housing 163, and a center shaft 164. The rotating members 153 and 154 are relatively rotatable by being connected to each other through the gear 152 and the central shaft 164. The rotating members 153 and 154 respectively have openings and corresponding openings 155 and 156 are provided on the opening, and the rotating members 153 and 154 correspond to each other. The arrangement and the gear 152 are disposed between the tooth rows 155, 156 and mesh with the rotating members 153, 154. When the rotating members 153, 154 are relatively rotated, the gear 152 is rotated.

On the other hand, the two rotating members 153, 154 respectively have corresponding extending portions 162, 157, and the extending portions 162, 157 extend in different directions, and respectively connect the telescopic tube member 140 and the front frame 110. The two driving members 158 and 160 are respectively connected to the two sides of the gear 152 and have corresponding transmission members 159 and 161 for connecting the telescopic rod 130 in the telescopic tube member 140. The components of the linkage mechanism 151 are symmetrically arranged, and the gears 152 and the central shaft 164 are sequentially arranged from the inside to the outside, and then the two rotating members 153 and 154 are connected, and then the two driving members 158 and 160 are continuously connected, and finally, the casing 163 is wrapped. The above components are fixed, wherein the gear 152 and the two driving members 158, 160 are coaxially disposed, and the two rotating members 153, 154 are coaxially disposed with the central shaft 164. The two driving members 158, 160 may be winches, and the two transmission members 159, 161 may be steel cables. Therefore, when the linkage mechanism 151 is actuated, the steel cables can be received into the winch or can be applied from the winch.

Referring to Fig. 4, there is shown a perspective view of the interlocking mechanism 151 in the embodiment of the cart 10 having the telescopic structure of the present invention. As shown in FIG. 3, the outer casing 163 is also coupled to the rear frame 120. Wherein D1 is the first direction of rotation and D2 is the second direction of rotation.

3 to 5, wherein FIG. 5 is a partial cross-sectional view showing an embodiment of the cart 10 having the telescopic structure of the present invention, with particular emphasis on the operation of the telescopic rod 130, the telescopic tube member 140, and the interlocking mechanism 151. The telescoping tube member 140 has a hollow structure to accommodate at least a portion of the telescopic rod 130, and includes a pulley 141 disposed at one end having a hollow structure and a slide rail disposed in the hollow structure, wherein the transmission member 159 is coupled to the pulley 141 via the pulley 141 The telescopic rod 130 and the transmission member 161 are directly connected to the telescopic rod 130. Therefore, when the telescopic tube member 140 is rotated relative to the linking mechanism 151 in the first direction D1, the rotating portion 154 is rotated by the extending portion 157 of the connecting telescopic tube member 140, and the gear 152 is further driven to rotate the driving members 158 and 160 respectively to drive The member 160 retracts the transmission member 161 to pull the telescopic rod 130 inwardly while the drive member 158 is released from the transmission member 159 to assist the telescopic rod 130 to move inwardly, and the telescopic rod 130 is received along the slide rail toward the telescoping tube member 140, and The two rotating members 153, 154 are relatively rotated, so that the angle between the extending portions 162, 157 of the two rotating members 153, 154 is reduced, that is, the angle between the front frame 110 and the telescopic tube member 140 is reduced; When the telescopic tube member 140 is rotated relative to the linking mechanism 151 in the second direction D2, the rotating portion 154 is rotated by the extending portion 157 of the connecting telescopic tube member 140, and the gear member 152 is further driven to rotate the driving members 158 and 160 respectively to drive The member 158 retracts the transmission member 159 to pull the telescopic rod 130 outward, while the driving member 160 is released from the transmission member 161 to assist the outward movement of the telescopic rod 130, and the telescopic rod 130 is slid relative to the telescopic tube member 140. The rail extends outwardly and drives the two rotating members 153, 154 to rotate relative to each other, so that the angle between the extending portions 162, 157 of the two rotating members 153, 154 is increased, that is, the front frame 110 and the telescopic tube member 140 The angle between them increases. The slide rails disposed in the hollow structure may be grooves, protrusions or other forms to assist the stable movement of the telescopic rods 130 relative to the telescoping tube members 140.

6 is a partial cross-sectional view of an embodiment of a cart 10 having a telescopic structure for explaining the present invention, with particular emphasis on the configuration of the linkage mechanism 151 and the connection of the telescopic rod 130 to the telescopic tube member 140. Knot. 6 also clearly shows that the transmission member 159 in the linkage mechanism 151 is connected to the telescopic rod 130 via the pulley 141, and the transmission member 161 is directly connected to the telescopic rod 130, and the telescopic tube member 140 and the front frame 110 are moved by the linkage mechanism 151. The rear frame 120 is unfolded and folded relative to each other, and at the same time, the telescopic rod 130 drives the connected handle 131 to extend and retract.

Referring to Fig. 7, a perspective view of an embodiment of a cart 20 having a telescopic structure, which is also provided in the present invention, is also a schematic view of the unfolded state of the cart 20. The cart 20 having the telescopic structure of the present invention includes a linkage mechanism 200, a first telescopic tube member 220, a second telescoping tube member 221, a third telescoping tube member 222, a first telescopic rod 230, a second telescopic rod 231, and a third telescopic rod 232. The handle 240, the front wheel 250, the rear wheel 251, and the receiving portion 260. Wherein, the components of the cart 20 are arranged symmetrically to the left and right, and the cross-bar can be further used to connect the left and right symmetrical elements to further enhance the stability of the cart 20.

Referring to Figure 8, a side view of an embodiment of a cart 20 having a telescoping structure is provided. As shown in FIG. 7 , the telescopic rods each have a hollow structure to accommodate the telescopic rod member therein, and the linkage mechanism 200 is a link group, and includes a mechanism body 210 that respectively connects the first telescopic tube member 220 and the second telescopic tube member 221 with The third telescopic tube 222 is away from the first end of the first telescopic rod 230, the second telescopic rod 231 and the third telescopic rod 232. Since the mechanism body 210 is the center of the component connection, when the cart 20 is folded, the mechanism body 210 can be used as a receiving body. The center of the joint; the auxiliary link 211, the connecting mechanism body 210 to enhance the structural stability and the action of the guiding linkage mechanism 200; the first link 212 has a bottom connected and opposite sides, wherein one side is connected to the auxiliary link 211 The first extension rod 230 is adjacent to one end of the hollow structure; the third joint link 213 is connected to the other side of the first link 212; and the second link 214 is connected to the third joint link 213 and the second extension rod 231. One end of the hollow structure; and a third link 215 connecting the three joint links 213 and the third telescopic rod 232 to one end of the hollow structure. The mechanism body 210 and the three-joint link 213 are respectively connected to the telescopic tube member and the telescopic rod, and the rotation of the three-joint link 213 relative to the mechanism body 210 is used to drive the telescopic rod to be folded and unfolded; and the linkage mechanism 200 further includes an extension. a connecting rod 216, one end of the extending link 216 is connected to the first The other end of the link 212, and the other end of the extension link 216 is connected to the handle 240, and the handle has a bent portion 241 to connect one end of the first telescopic rod 230 away from the hollow structure.

9 is a schematic view of a first link 212 of an embodiment of a cart 20 having a telescopic structure according to another embodiment of the present invention. The cart 20 has two first links 212 arranged oppositely and opposite in structure. As shown in FIG. 9, the first link 212 has bottom joints and opposite sides, and has two joints on both sides. The joint a connects the three-joint link 213, the extension link 216 is connected through the joint b, the auxiliary link 211 is connected through the joint c, and one end of the first telescopic rod 230 adjacent to the hollow structure is connected through the joint d. Therefore, the first link 212 can simultaneously connect the actions of the plurality of components through the integrally formed structure, and assists the actuation of the linkage mechanism 200 and the stabilization of the reinforcing structure by the auxiliary link 211.

On the other hand, the cart 20 has a fixed card member that locks the interlocking mechanism 200 when the cart 20 is deployed by the linkage mechanism 200 to stabilize the deployment mechanism 200, thereby stabilizing the deployed configuration of the cart 20. In particular, when the angle θ between the first telescopic tube member 220 and the second telescoping tube member 221 is increased, the first telescopic rod 230, the second telescopic rod 231 and the third telescopic rod 232 are actuated by the linkage mechanism 200. Being applied, and the operation of the linkage mechanism 200 can be locked by the fixing clip; and when the angle θ between the first telescoping tube 220 and the second telescopic tube 221 is reduced, the first telescopic rod 230, the second telescopic rod 231 and the first The three telescopic rods 232 are retracted by the actuation of the linkage mechanism 200, and the actuation of the linkage mechanism 200 can be locked by the fixing clips. Therefore, the volume of the cart 20 can be greatly reduced.

10 to 12, wherein FIG. 10 is a side view of an embodiment of a cart 20 having a telescopic structure according to another embodiment of the present invention, and is also a schematic view of the cart 20 in a slightly folded state; A side view of an embodiment of the cart 20 having a telescopic structure, which is also a schematic view of the cart 20 in a half-retracted state; and FIG. 12 is an embodiment of the cart 20 having a telescopic structure according to another embodiment of the present invention. The side view is also a schematic view of the fully collapsed state of the cart 20. That is, the 10th to 12th drawings can be regarded as a continuous schematic diagram of each of the folding stages of the cart 20. As can be seen from the figure, when the first telescoping tube 220 is rotated relative to the mechanism body 210 in the first direction D1, The connecting rod 211 and the first link 212 drive the three-joint link 213 Rotating in the first direction D1 further drives the second link 214 and the third link 215 to respectively pull back the first telescopic rod 230, the second telescopic rod 231 and the third telescopic rod 232, and make the first telescopic The angle θ between the tube member 220 and the second telescopic tube member 221 is reduced, that is, the first telescoping tube member 220 and the second telescoping tube member 221 are folded toward the third telescoping tube member 222; conversely, when the first telescoping tube member 220 is opposite to the mechanism The main body 210 is rotated in the second direction D2, and the third link 213 is rotated by the auxiliary link 211 and the first link 212 to drive the second link 214 and the third link 215 to move. The first telescopic rod 230, the second telescopic rod 231 and the third telescopic rod 232 are respectively applied, and the angle θ between the first telescopic tubular member 220 and the second telescopic tubular member 221 is increased, that is, the first telescopic tubular member 220 The second telescopic tube member 221 is deployed away from the third telescoping tube member 222. And the first link 212 connects the auxiliary link 211 and the first telescopic rod 230 and the three joint link 213 and the extension link 216 through the two opposite sides thereof, so that the first link 212 can simultaneously connect the plurality of components. Actuation and assisting the actuation of the linkage mechanism 200 and the stabilization of the reinforcing structure by the auxiliary link 211.

When the first telescopic tube 220 is rotated relative to the mechanism body 210 in the first direction D1, the first telescopic rod 230 is folded toward the first telescopic tube 220, and the handle 240 is rotated by the bending portion 241 in the second direction D2. Conversely, when the first telescoping tube 220 is rotated relative to the mechanism body 210 in the second direction D2, the first telescopic rod 230 protrudes outward relative to the first telescoping tube 220, and the handle 240 is passed through the curved portion 241. One direction D1 is rotated. That is, the user can also use the handle 240 as a lever to easily open and close the cart 20 by the operation of the telescopic structure.

Referring to Fig. 13, there is shown a perspective view of an embodiment of a cart 20 having a telescopic structure, which is also a schematic view of the cart 20 in a fully collapsed state. As described above, when the cart 20 is fully folded, the components are folded toward the center of the mechanism body 210 to reduce the volume; conversely, when the cart 20 is required to be used, the cart 20 can be easily accessed by the handle 240. Unfolding, a stable cart 20 structure and a receptacle 260 for placing articles are obtained.

In summary, the carts 10 and 20 having the telescopic structure of the present invention can automatically unfold and fold the structures of the carts 10 and 20 through the linkage mechanisms 151 and 200, thereby achieving easy operation and time saving. Effect.

The above description is merely exemplary and not limiting. Equivalent modifications or variations of the present invention are intended to be included within the scope of the appended claims.

Claims (10)

A cart having a telescopic structure, comprising: a telescopic rod; a telescopic tube member, the telescopic tube member and at least one of the telescopic rods having a hollow structure as needed for the telescopic tube member and the telescopic rod to be engaged with each other The accommodating space is connected to the end of the telescopic tube member away from the hollow structure and connected to one end of the telescopic rod adjacent to the hollow structure; and a frame connecting the linkage mechanism; When the frame is slid and folded relative to the linkage mechanism, the folding action causes the telescopic tube member to also rotate relative to the linkage mechanism, and the telescopic tube member and one of the telescopic rods are biased by the linkage mechanism. Another indentation. The cart having a telescopic structure according to claim 1, wherein the linkage mechanism comprises: a gear; and at least two rotating members connected to each other for relative rotation, the rotating members each having an opening a tooth row is disposed on the opening, the tooth rows are disposed corresponding to each other, and the gear is disposed between the tooth rows, and the tooth rows are engaged with the gear, and are relatively rotated at the at least two rotating members The gear is rotated to rotate; and one of the at least two rotating members has a first extension to connect an end of the telescopic tubular member away from the hollow structure by the first extending portion. a cart having a telescopic structure as described in claim 2, wherein the extension The shrink tube has a pulley disposed adjacent to one end of the hollow structure and a slide rail disposed in the hollow structure, and the linkage mechanism further includes: a first driving member coupled to one side of the gear, the first The driving member has a first transmission member retractable, one end of the first transmission member passes through the pulley to connect the telescopic rod; and a second driving member is coupled to the other side of the gear, the second driving member Having a second transmission member retractable, one end of the second transmission member is coupled to the telescopic rod; wherein, when the telescopic tube member is rotated relative to the linkage mechanism in a first direction, the at least two rotating members are driven to rotate relative to each other Further driving the gear to rotate the first driving member and the second driving member to respectively apply the first transmission member and pull back the second transmission member, so that the telescopic rod is oriented toward the telescopic rail along the sliding rail The tube is retracted. The cart having a telescopic structure according to claim 3, wherein when the telescopic tube member is rotated relative to the linkage mechanism in a second direction, the at least two rotating members are driven to rotate relative to each other to further drive the gear. Rotating the first driving member and the second driving member to respectively pull back the first transmission member and apply the second transmission member, so that the telescopic rod protrudes outwardly of the telescopic tube along the sliding rail. The cart having a telescopic structure according to claim 4, wherein the other of the at least two rotating members has a second extending portion, and the first extending portion and the second extending portion are oriented differently The direction extends. The cart having a telescopic structure according to claim 5, wherein the frame comprises a front frame and a rear frame, respectively connected to a front wheel and a rear wheel; The front frame is connected to the second extension portion, and the rear frame is connected to the linkage mechanism, so that the front frame and the telescopic tube member can be unfolded or folded by the linkage mechanism with respect to the rear frame. The cart having a telescopic structure according to claim 6, wherein the linkage mechanism further has a fixing clip, and wherein: when the angle between the front frame and the telescopic tube member increases, the telescopic rod Exciting from the telescopic tubular member by the action of the linkage mechanism, and locking the action of the linkage mechanism by the fixing clip; and when the angle between the front frame and the telescopic tubular member is reduced, the telescopic rod passes the The actuation of the linkage mechanism is retracted toward the telescoping tubular member, and the actuation of the linkage mechanism is locked by the fastening clip. The cart having a telescopic structure according to claim 1, wherein the linkage mechanism is a link set. The telescopic tubular member includes a first telescopic tubular member, a second telescopic tubular member and a third telescopic tubular member, and the telescopic rod includes a first telescopic rod, a second telescopic rod and a third telescopic rod, and the connecting rod set further comprises: a mechanism body respectively connecting the first telescopic tube member, the second telescopic tube member and the third telescopic tube member away from the hollow structure One end; an auxiliary connecting rod is connected to the body of the mechanism; a first connecting rod is respectively connected to the auxiliary connecting rod and one end of the first telescopic rod adjacent to the hollow structure; a three-joint connecting rod is connected to the first a connecting rod a second connecting rod connecting the three joint connecting rod and one end of the second telescopic rod adjacent to the hollow structure; and a third connecting rod connecting the three joint connecting rod and the third telescopic rod adjacent to the One end of the hollow structure; wherein, when the first telescopic tube member is rotated in a first direction relative to the mechanism body, the first connecting rod is driven by the auxiliary connecting rod to rotate the three-joint connecting rod, thereby further Actuating the second link and the third link to respectively retract the first telescopic rod, the second telescopic rod and the third telescopic rod, and make an angle between the first telescopic tube and the second telescopic tube Zoom out. The cart having a telescopic structure according to claim 9, wherein when the first telescoping tube is rotated in a second direction relative to the mechanism body, the first link is driven by the auxiliary link, Rotating the three-joint link to further actuate the second link and the third link to respectively apply the first telescopic rod, the second telescopic rod and the third telescopic rod, and make the first The angle between the telescopic tube member and the second telescoping tube member increases.