CN103029730B - Trolley folding mechanism - Google Patents

Abstract

The invention discloses a trolley folding mechanism, the trolley at least comprises: a front wheel set; a rear wheel set; the folding mechanism includes: the connecting rod is connected between the front wheel set and the rear wheel set; the device comprises a first connecting rod, a second connecting rod, a carrier frame, a front rod, a bottom connecting rod and a bottom connecting rod, wherein one end of the first connecting rod and one end of the second connecting rod are respectively hinged with the connecting rod; the folding control mechanism is used for controlling the folding state after the front rod, the object carrier, the first connecting rod, the second connecting rod and the bottom connecting rod are folded together in a linkage manner. The folding mechanism is provided with the folding control mechanism, so that the hand push machine is more convenient to fold and carry. The folding mechanism can be conveniently controlled by arranging the keys. The main body of the invention can be folded, and the hand-push handle can also be folded, thus saving space to the utmost extent.

Description

Trolley folding mechanism

technical field

The invention relates to a trolley, in particular to a folding mechanism of the trolley.

Background technique

The stroller can have a seat, a carrier or a car chair on the frame, and is mainly used for riding or storing items for young children. Existing trolley skeleton comprises vehicle frame, front wheel link, front bar and handle, and front wheel link is equipped with front wheel set, and rear wheel set is installed at the bottom of rear vehicle frame, and front wheel link and rear vehicle frame pass through The bottom bar connects to fold the handlebars and front frame by turning them towards the rear frame. However, these folding mechanisms have the problem of inconvenient folding. For a long time, how to fold the trolley, fold and open it conveniently, so as to be easy to carry has been a problem to be solved in the trolley industry.

Contents of the invention

Aiming at the deficiencies in the prior art, the invention provides a trolley folding mechanism capable of folding the cart body.

The present invention is realized by the following technical solutions: a trolley folding mechanism, the trolley at least includes: a front wheel set; a rear wheel set; the folding mechanism includes: a connecting rod connected between the front wheel set and the rear wheel set; The first connecting rod and the second connecting rod respectively hinged with the connecting rod, the load carrier hinged with the other end of the first connecting rod, the front rod hinged with the other end of the second connecting rod, the bottom hinged with the bottom end of the front rod Connecting rod, the carrier is hinged with the front rod, the other end of the bottom connecting rod is hinged with the connecting rod or the axle rod in the front wheel set; it also includes the front rod, the carrier, the first connecting rod, the second connecting rod, After the bottom link is folded together, it controls the folding control mechanism that maintains the folded state.

Wherein, the folding control mechanism is composed of a hook groove provided on the second connecting rod, and a movable hook member that can hook the hook groove tightly.

Wherein, the inside of the front rod is hollow, a pull rod is arranged inside the front rod, a hook is arranged at one end of the pull rod, the hook protrudes from an opening on the outer wall of the front rod, and the other end of the pull rod is connected with the handle. , the handle is exposed outside the front pole.

Wherein, the folding control mechanism also includes a button, which is connected with the linkage bar, and the handle is provided with a sliding groove through which the linkage bar can extend into after the linkage bar moves, thereby enabling the handle to move.

Wherein, a support is provided on the connecting rod, one end of the first connecting rod is hinged with the connecting rod through the support, and one end of the second connecting rod is hinged with the connecting rod through the support.

Wherein, the support is provided with a movable inlay, the inlay is provided with a semicircular groove, and the front rod is provided with an extending part embedded in the semicircular groove after the current rod moves.

Wherein, an elastic piece is arranged between the support and the inlay piece.

Wherein, the front rod is provided with a rotation control mechanism that can limit the rotation angle of the push handle to realize the folding of the push handle.

Wherein, the rotation control mechanism is composed of a movable handle of the push handle and a limit piece arranged on the push handle, and the limit piece is provided with a protrusion that contacts with the pull handle of the push handle and can limit the rotation of the push handle. .

Compared with the prior art, the present invention has the following beneficial effects:

The folding mechanism of the present invention is provided with a folding control mechanism, so that the front rod, the loading rack, the first connecting rod, the second connecting rod, and the bottom connecting rod are linked and folded together to maintain the locked and folded state. After the folding control mechanism is activated, the front rod, The carrier, the first connecting rod, the second connecting rod, and the bottom connecting rod can be opened to return to the normal state, making the hand pusher more convenient to fold and carry. There are buttons to conveniently control the folding mechanism. The main body of the invention can be folded, and the push handle can also be folded, which can save space to the greatest extent.

Description of drawings

Figure 1 and Figure 2 are schematic diagrams of the three-dimensional structure of the trolley with different visions;

Fig. 3 and Fig. 4 are three-dimensional structure schematic diagrams of different folding states of the trolley;

Fig. 5, Fig. 6 and Fig. 7 are structural schematic diagrams of the trolley in the disassembled state of some components.

Detailed ways

With reference to Fig. 1, Fig. 2 and Fig. 3, Fig. 4, Fig. 5, Fig. 6, and Fig. 7, the trolley proposed by the present invention includes: a front wheel set; a rear wheel set; the folding mechanism includes: connected to the front wheel set The connecting rod 1 between the rear wheel group; the first connecting rod 2 and the second connecting rod 3 which are respectively hinged with the connecting rod 1 at one end, the carrier 6 which is hinged with the other end of the first connecting rod 1, and the second connecting rod The other end of the rod 3 is hinged with the front rod 4, and the bottom link 5 is hinged with the bottom end of the front rod 4. The shaft rod 7 in the middle is hinged; it also includes the front rod 4, the loading rack 6, the first connecting rod 2, the second connecting rod 3, and the bottom connecting rod 5. After they are folded together, they control the folding control mechanism to maintain the folded state.

Described folding control mechanism is formed by being located at the hook groove 8 on the second connecting rod 3, and can move, and is arranged on the front rod 4, the carrier 6, the first connecting rod 2, the second connecting rod 3, the bottom connecting rod 5 After being linked and folded together, the hook parts 9 that can hook the hook groove 8 are formed. The inside of the front bar 4 is hollow, and the inside of the front bar 4 is provided with a pull bar 10. The hook 9 is located at one end of the pull bar 10. The hook 9 stretches out from an opening in the outer wall of the front bar 4, and the pull bar 10 is in addition. One end is connected with the handle 11, and the handle 11 is exposed outside the front rod 4. Handle 11 can be located at the place of convenient control like this.

The folding control mechanism also includes a button 13, which is connected to the linkage bar 15, and the handle 11 is provided with a sliding groove 16 that allows the linkage bar 15 to extend in after the linkage bar 15 moves, thereby enabling the handle 11 to move. In this way, only after the button 13 is pulled to one side, the interlocking bar 15 can be aligned with the sliding groove 16, and the interlocking bar 15 can be stretched into the sliding groove 16, so that the handle 11 can be freed from the blocking of the interlocking bar 15, and the handle 11 can pulled by an external force.

Hand push handle 12 is installed in the shell that shell 141, shell 142 constitute, and front rod 4 is provided with and can limit hand push handle 12 rotation angles and realizes the rotation control mechanism that push handle 12 folds, and described rotation control mechanism is made of movable The push handle handle 19 is formed with the upper limit member 14 arranged on the push handle 12, and the limit member 14 is provided with a protrusion that contacts with the push handle handle 19 and can limit the rotation of the push handle 12. After the push handle handle 19 is pulled, the push handle 12 can be rotated and the push handle 12 can be folded.

Wherein, a support 17 is provided on the connecting rod 1 , one end of the first connecting rod 2 is hinged to the support 17 , and one end of the second connecting rod 3 is hinged to the support 17 .

Wherein, the support 17 is provided with a movable inlay 18, and the inlay 18 is provided with a semicircular groove, and the front rod 4 is provided with an extending part embedded in the semicircular groove after the current rod 4 is opened. After the trolley is opened, the protruding part is embedded in the semicircular groove. A spring is provided between the inlay piece 18 and the support 17, which can play a reset role.

When the cart needs to be folded as shown in Fig. 3 and Fig. 4, the button 13 is moved to one side, so that the handle can be freed from the blocking of the linkage bar 15 and can move upwards. At this time, the handle 11 can be pulled upwards, and the handle 11 drives the connection The moving pull rod 10 rises. At this time, the bottom end of the pull rod 10 impels the protruding part on the front rod 4 to break away from the semicircular groove on the inlay 18, and the front rod 4 is pressed down. Through the front rod 4, the loading rack 6, After the first connecting rod 2, the second connecting rod 3, and the bottom connecting rod 5 are folded together, the hook 9 is hooked tightly in the hook groove 8, and then the push handle handle 19 is pulled, and the push handle 12 is rotated, thus realizing the folded state of the trolley.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. within range.

Claims (9)

1. A kind of handcart folding mechanism, described handcart comprises at least: front wheel group; Rear wheel group; It is characterized in that, described folding mechanism comprises: the connecting rod that is connected between front wheel group and rear wheel group; The connecting rod is hinged with the first connecting rod and the second connecting rod, the carrier is hinged with the other end of the first connecting rod, the front rod is hinged with the other end of the second connecting rod, and the bottom connecting rod is hinged with the bottom end of the front rod , the carrier is hinged with the front rod, the other end of the bottom link is hinged with the connecting rod or the axle rod in the front wheel set; it also includes the front rod, the carrier, the first link, the second link, the bottom link After the rods are linked and folded together, the folding control mechanism that maintains the folded state is controlled. 2 . The trolley folding mechanism according to claim 1 , wherein the folding control mechanism is composed of a hook groove provided on the second connecting rod, and a movable hook that can be hooked tightly to the hook groove. 3 . 3. According to the described trolley folding mechanism of claim 2, it is characterized in that, the inside of the front rod is hollow, a pull rod is arranged in the inside of the front rod, the hook is arranged at one end of the pull rod, and the hook is connected from a part of the outer wall of the front rod. The outside protrudes from the opening, the other end of the pull rod is connected with the handle, and the handle is exposed outside the front rod. 4. The trolley folding mechanism according to claim 3, characterized in that the folding control mechanism also includes buttons, which are connected to the linkage bar, and the handle is provided with the linkage bar to allow the linkage bar to extend in after the movement of the linkage bar. Sliding groove with movable handle. 5. The trolley folding mechanism according to claim 1, wherein a support is provided on the connecting rod, one end of the first connecting rod is hinged to the connecting rod through the support, and the second connecting rod One end thereof is hinged to the connecting rod through the support. 6. The trolley folding mechanism according to claim 5, wherein the support is provided with a movable inlay, the inlay is provided with a semicircular groove, and the front rod is provided with a current rod that is embedded in the semicircular groove of the intrusions. 7. The trolley folding mechanism according to claim 6, wherein an elastic member is provided between the support and the inlay. 8. The trolley folding mechanism according to claim 1, wherein the front rod is provided with a rotation control mechanism capable of limiting the rotation angle of the push handle to realize the folding of the push handle. 9. The trolley folding mechanism according to claim 8, characterized in that the rotation control mechanism is composed of a movable hand push handle handle and a limit piece arranged on the hand push handle, and the limit piece is provided with a The protrusion that the push handle is in contact with and can limit the rotation of the push handle.