Handcart with foldable handles

Abstract

The invention relates to the technical field of trolleys, and particularly discloses a trolley with a foldable handle, which comprises a bottom plate, trundles arranged on the bottom surface of the bottom plate and a handle arranged on the bottom plate, and the handle is provided with an elastically telescopic pressing piece; a bracket is fixed on the bottom plate, and a locking block capable of elastically moving is arranged on the bracket; a rotating piece is arranged at the lower end of the handle, a locking structure used for being matched with the locking block in a locking mode is arranged on the rotating piece, the rotating piece is rotationally connected with the support, and the handle can be rotated to a using state and a folding state; the support is rotationally connected with a stirring piece, a pull rope is arranged on the handle, one end of the pull rope is connected with the pressing piece, and the other end of the pull rope is connected with the free end of the stirring piece. When the handle rotates from the folded state to the using state, the locking block and the locking structure are matched in a locking mode to limit rotation of the handle in the folding direction. A user can fold the handle by operating the pressing piece on the handle, and use is more convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of trolleys, in particular to a trolley with foldable handles. Background Art

[0002] A handcart is a common cargo transport vehicle in daily life, and has the characteristics of simple structure and easy use. A traditional handcart comprises a base plate, a bottom surface of the base plate is provided with casters, and a top surface of the base plate is provided with a handle.

[0003] To facilitate storage of the trolley, existing trolleys are designed with handles that can be rotated and folded above the base plate to reduce space usage. However, these existing trolleys require users to unlock the handle at the connection between the handle and the base plate, which is inconvenient to use. Summary of the Invention

[0004] The present invention provides a trolley with a foldable handle. A user can operate a pressing piece on the handle to fold the handle, which is more convenient to use.

[0005] In order to solve the above problems, the present invention adopts the following technical solutions:

[0006] The foldable trolley of claim 1, wherein the trolley has a bottom plate, a caster arranged on the bottom surface of the bottom plate, and a handle arranged on the bottom plate, wherein the handle is provided with an elastically retractable pressing member; a bracket is fixed to the bottom plate, and an elastically movable locking block is provided on the bracket; a rotating member is provided at the lower end of the handle, and the rotating member is provided with a locking structure for locking and cooperating with the locking block, the rotating member is rotatably connected to the bracket, and the handle can be rotated to a use state and a folded state; a toggle member is rotatably connected to the bracket, and the handle is provided with a pull rope, one end of the pull rope is connected to the pressing member, and the other end is connected to the free end of the toggle member; when the handle is rotated from the folded state to the use state, the locking block and the locking structure are locked and cooperated to limit the rotation of the handle in the folding direction; when the handle is in the use state, if the pressing member is retracted, the pressing member pulls the toggle member through the pull rope, and the toggle member toggles the locking block to release the locking cooperation between the locking block and the locking structure; the toggle member can be elastically reset when the pressing member is extended.

[0007] In some embodiments, the rotation axis of the toggle member and the bracket is coaxially arranged with the rotation axis of the rotating member and the bracket; the rotating member is provided with a rotation groove, and the locking block is inserted into the rotation groove and can move along the rotation groove.

[0008] In some embodiments, the locking structure is a limiting protrusion provided on the inner wall of the rotation groove. When the limiting protrusion abuts against the end face of the locking block, the locking block and the limiting protrusion are locked and matched.

[0009] In some embodiments, the toggle member is provided with a toggle groove, the locking block is inserted into the toggle groove, and a toggle protrusion is provided on the inner wall of the toggle groove; when the handle is in use, the toggle protrusion abuts against the end of the locking block away from the limiting protrusion; when the pressing member pulls the toggle member through the pull rope, the toggle protrusion pushes the locking block to rotate in the direction of crossing the limiting protrusion.

[0010] In some embodiments, the bracket is provided with a slot, the locking block is passed through the slot, a spring piece is fixed in the slot, and the spring piece abuts against the end face of the locking block against which the limiting protrusion abuts.

[0011] In some embodiments, the locking block is provided with a groove, and the side wall of the slot is embedded in the groove.

[0012] In some embodiments, the handle includes a gripping portion, and the pressing member is disposed on the gripping portion.

[0013] In some embodiments, a stop rod is connected to the bracket, and a stop block is provided on the rotating member. When the handle is in use, the stop block abuts against the stop rod to limit the handle from rotating in a direction opposite to the folding direction.

[0014] In some embodiments, the handle is provided with a connecting seat, the connecting seat is provided with a sliding groove, and the pressing member is inserted into the sliding groove and can slide along the sliding groove.

[0015] In some embodiments, the pull rope is connected to a connecting column at one end close to the pressing member, and the pressing member is provided with a guiding slope, which is inclined relative to the extension and retraction direction of the pressing member. The connecting column abuts the guiding slope, and during the retraction of the pressing member, the guiding slope pushes the connecting column.

[0016] In some embodiments, a safety mechanism is provided on the connecting seat, and the safety mechanism can limit the retraction of the pressing piece or release the restriction on the pressing piece; a tension spring is provided on the bracket, one end of the tension spring is connected to the bracket, and the other end is connected to the free end of the toggle piece, and the direction of the tension generated by the tension spring is opposite to the pulling direction of the pull rope.

[0017] The present invention has at least the following beneficial effects: when the handle is rotated from the folded state to the use state, the locking block and the locking structure lock and cooperate to limit the handle from rotating in the folding direction, and the handle can be kept in the use state, ensuring that the user can use the trolley normally; when the user does not need to use the trolley, the user can press the pressing piece, and the pressing piece pulls the toggle piece through the pull rope, and the toggle piece toggles the locking block to release the locking cooperation between the locking block and the locking structure, and the handle can be folded. Since the pressing piece is located on the handle, the user does not need to perform an unlocking operation at the connection between the handle and the base plate, which is smoother to operate and more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic structural diagram of a trolley with a foldable handle according to an embodiment of the present invention when the handle is in use;

[0019] Figure 2 This is a schematic structural diagram of a trolley with a foldable handle according to an embodiment of the present invention when the handle is in a folded state;

[0020] Figure 3 This is a schematic structural diagram of a bracket, a rotating member, and a toggle member according to an embodiment of the present invention when the handle is in use;

[0021] Figure 4 This is a schematic structural diagram of a bracket, a rotating member, and a toggle member according to an embodiment of the present invention when the handle is in a folded state;

[0022] Figure 5 This is an exploded schematic diagram of a bracket, a rotating member, and a toggle member according to an embodiment of the present invention;

[0023] Figure 6 A schematic structural diagram of a rotating member according to an embodiment of the present invention;

[0024] Figure 7 A schematic structural diagram of a toggle member according to an embodiment of the present invention;

[0025] Figure 8 This is a schematic structural diagram of a bracket according to an embodiment of the present invention;

[0026] Figure 9 This is a schematic structural diagram of a locking block and a spring piece according to an embodiment of the present invention;

[0027] Figure 10 This is a schematic structural diagram of a connecting seat, a pressing member, and a safety mechanism according to an embodiment of the present invention.

[0028] Wherein, the accompanying drawings are marked as follows:

[0029] Base plate 100, casters 110,

[0030] Handle 200, grip portion 210, connecting base 220;

[0031] Bracket 310, slot 311, blocking rod 312, toggle member 320, toggle slot 321, toggle protrusion 322, rotating rod 323, rotating member 330, locking structure 331, rotating slot 332, blocking block 333, locking block 340, groove 341, spring piece 350, protective box 360;

[0032] Pull rope 410, ring 411, connecting post 412, tension spring 420;

[0033] Pressing member 510 , guiding slope 511 , abutting portion 512 , safety mechanism 520 , sliding seat 521 , and spring 522 . DETAILED DESCRIPTION

[0034] The following description of the present invention is provided with reference to the accompanying drawings to facilitate a more comprehensive understanding of the various embodiments of the present invention as defined in the claims and their equivalents. The description includes various specific details to assist understanding, but these details are to be construed as merely exemplary. Therefore, those skilled in the art will appreciate that various changes and modifications may be made to the various embodiments described herein without departing from the scope and spirit of the present invention.

[0035] In the description of the present invention, descriptions of orientations, such as up, down, front, back, left, and right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limiting the present invention.

[0036] It will be understood that when one element (e.g., a first element) is “connected” to another element (e.g., a second element), the element may be directly connected to the other element or an intervening element (e.g., a third element) may be present between the element and the other element.

[0037] An embodiment of the present invention provides a trolley with a foldable handle. Figure 1-5 As shown, the trolley comprises a base plate 100, casters 110 disposed on the bottom surface of the base plate 100, and a handle 200 disposed on the base plate 100. The base plate 100 is used to place goods, and the handle 200 is provided for the user to grasp to facilitate pushing or pulling the entire trolley. The handle 200 is provided with an elastically retractable pressing member 510. The user can press the pressing member 510 to cause it to retract. After the user's pressing force is released, the pressing member 510 can elastically return to extend outward, allowing the pressing member 510 to continue to be operated by the user after it is returned to its original position.

[0038] A bracket 310 is fixed on the base plate 100, and an elastically movable locking block 340 is provided on the bracket 310. The locking block 340 can be displaced when subjected to an external force, creating conditions for it to be unlocked or locked. When the external force disappears, the locking block 340 can be elastically reset to wait for the next action. A rotating member 330 is provided at the lower end of the handle 200. The rotating member 330 can be fixed to the lower end of the handle 200 or formed integrally with the handle 200. A locking structure 331 for locking with the locking block 340 is provided on the rotating member 330. The rotating member 330 is rotatably connected to the bracket 310. When the rotating member 330 rotates relative to the bracket 310, the handle 200 also rotates relative to the bracket 310. The handle 200 can be rotated to a use state and a folded state. Figure 1 For example, when the handle 200 is in use, it is open relative to the bottom plate 100, and the user can hold the handle 200 to use the trolley normally; Figure 2 For example, when the handle 200 is in the folded state, it can be rotated and folded above the bottom plate 100 .

[0039] A toggle member 320 is rotatably connected to the bracket 310. One end of the toggle member 320 is rotatably connected to the bracket 310, and the other end is a free end that can rotate around the axis of the rotational connection. A pull cord 410 is provided on the handle 200. The pull cord 410 can be routed along the handle 200. Specifically, it can be routed along the outer surface of the handle 200. The handle 200 can also be configured as a hollow structure so that the pull cord 410 is routed inside the handle 200 to provide protection for the pull cord 410. One end of the pull cord 410 is connected to the pressing member 510, and the other end is connected to the free end of the toggle member 320. Therefore, when the pressing member 510 retracts, it can drive the pull cord 410, and the pull cord 410 then pulls the free end of the toggle member 320, allowing the toggle member 320 to rotate.

[0040] When the handle 200 is rotated from the folded state to the in-use state, the locking block 340 and the locking structure 331 lock and cooperate to restrict the handle 200 from rotating in the folding direction. The handle 200 will not fold on its own, thereby remaining in the in-use state, ensuring that the user can use the stroller normally. When the handle 200 is in the in-use state, if the user presses the pressing member 510, the pressing member 510 will retract. The pressing member 510 pulls the toggle member 320 via the pull cord 410. The toggle member 320 toggles the locking block 340 to release the locking cooperation between the locking block 340 and the locking structure 331. The locking block 340 no longer restricts the handle 200 from rotating in the folding direction, and the user can fold the handle. When the user's pressing force on the pressing member 510 disappears, the toggle member 320 can elastically return to its original position when the pressing member 510 extends outward, ready for the next user operation.

[0041] In this embodiment, a pressing member 510 is provided on the handle 200 , and the user does not need to perform an unlocking operation at the connection between the handle 200 and the base plate 100 , which makes the operation smoother and more convenient to use.

[0042] In some embodiments, as Figure 3-6 As shown, the rotation axis of the toggle member 320 and the bracket 310 is coaxially arranged with the rotation axis of the rotating member 330 and the bracket 310. Since the toggle member 320 and the rotating member 330 rotate around the same rotation axis, the arrangement of the locking block 340 and other structures is convenient. The locking block 340 is relatively easy to activate, ensuring the stable operation of the locking block 340 and other structures, and making the overall structure compact, reducing space occupation.

[0043] Rotating member 330 is provided with a rotation slot 332, into which locking block 340 is inserted and movable. Insertion of locking block 340 into rotation slot 332 brings it closer to rotating member 330, facilitating the placement of locking structure 331 and facilitating locking engagement between locking block 340 and locking structure 331. Rotating slot 332 provides a safe position for locking block 340 to rotate.

[0044] Furthermore, the locking structure 331 is a stopper protrusion disposed on the inner wall of the rotation groove 332. When the stopper protrusion abuts the end face of the locking block 340, the locking block 340 can restrict the rotation of the stopper protrusion, which in turn restricts the rotation of the rotating member 330, thereby achieving a locked engagement between the locking block 340 and the stopper protrusion. During the rotation of the handle 200 from the folded state to the usable state, the locking block 340 can shift or rotate past the stopper protrusion, allowing the end face of the reset locking block 340 to abut the stopper protrusion, maintaining the locked engagement with the stopper protrusion and maintaining the usable state of the handle 200.

[0045] In this embodiment, the limiting protrusion may be arc-shaped and have a smooth surface, so that the locking block 340 can pass over the limiting protrusion along the surface of the limiting protrusion after being rotated or shifted by external force, that is, the locking block 340 is easier to lock with the limiting protrusion, and is also easier to release the locking state with the limiting protrusion.

[0046] Furthermore, the toggle member 320 is provided with a toggle groove 321, into which the locking block 340 is inserted, bringing the locking block 340 closer to the toggle member 320, making it easier for the toggle member 320 to toggle the locking block 340. A toggle protrusion 322 is provided on the inner wall of the toggle groove 321, which is used to toggle the locking block 340. When the handle 200 is in use, the toggle protrusion 322 abuts the end of the locking block 340 away from the stop protrusion. When the pressing member 510 pulls the toggle member 320 via the pull cord 410, the toggle protrusion 322 pushes the locking block 340 to rotate in a direction that passes over the stop protrusion, allowing the locking block 340 to disengage from the stop protrusion.

[0047] by Figure 3 and Figure 5 For example, the locking block 340 is placed obliquely, with the upper end of the locking block 340 abutting the limiting protrusion and the lower end abutting the toggle protrusion 322. When the pull cord 410 pulls the toggle member 320, the free end of the toggle member 320 rotates upward, and the toggle protrusion 322 pushes the lower end of the locking block 340 to move upward. Correspondingly, the upper end of the locking block 340 moves downward, thereby passing over the limiting protrusion, allowing the locking block 340 to disengage from the locking engagement with the limiting protrusion.

[0048] In some embodiments, as Figure 4 、 Figure 5 and Figure 8 As shown, the bracket 310 is provided with a slot 311, and the locking block 340 is inserted into the slot 311. A spring clip 350 is fixed in the slot 311. The spring clip 350 abuts the end surface of the locking block 340 against which the limiting protrusion abuts. That is, the spring clip 350 and the limiting protrusion abut the same end surface of the locking block 340. The slot 311 provides space for installing the locking block 340 and the spring clip 350. The spring clip 350 abuts the end surface of the locking block 340 against which the limiting protrusion abuts, allowing the locking block 340 to elastically displace and elastically return to its original position after displacement. Due to the elastic thrust of the spring clip 350, the locking block 340 will not automatically disengage from the locking structure 331.

[0049] Further, such as Figure 8 and Figure 9 As shown, the locking block 340 is provided with a groove 341, and the side wall of the slot 311 is embedded in the groove 341. Through the cooperation between the side wall of the slot 311 and the groove 341, the locking block 340 is limited from moving to the left and right sides, and the locking block 340 will not be separated from the groove 341, and accordingly will not be separated from the toggle slot 321 and the rotating slot 332 of the above embodiment, thereby ensuring the stable operation of the entire mechanism.

[0050] When the locking block 340 is rotated by the toggle member 320 , the side wall of the locking slot 311 can still be inserted into the groove 341 .

[0051] In some embodiments, as Figure 5-7 As shown, the free end of the toggle member 320 may be provided with a rotating rod 323, and the end of the pull rope 410 is connected to a collar 411, which can be sleeved on the rotating rod 323, so that the toggle member 320 is pulled through the collar 411. When the rotating member 330 rotates, the angle of the pull rope 410 relative to the rotating rod 323 changes, and the collar 411 can rotate relative to the rotating rod 323 accordingly. However, this does not affect the collar 411, which is still sleeved on the outside of the rotating rod 323, that is, the connection between the pull rope 410 and the free end of the toggle member 320 can be maintained.

[0052] In some embodiments, as Figure 1 and Figure 2 As shown in Figure 2 , the handle 200 includes a gripping portion 210, and the pressing member 510 is disposed on the gripping portion 210. The gripping portion 210 is the main part of the handle 200 for the user to grip, and is the position directly operated by the user's hand. By disposing the pressing member 510 at this position, which is closer to the user's hand, the user can press the pressing member 510 at any time, making the operation more convenient.

[0053] The handle 200 of the trolley generally includes two vertical rods and a horizontal rod connecting the two vertical rods, such that the handle 200 is generally in a "U" - shaped structure, and the horizontal rod is the gripping portion 210 of the handle 200. Of course, when the handle 200 of the trolley is in other shaped structures, the pressing member 510 is also preferably disposed on the gripping portion 210 available for the user, facilitating the user's operation.

[0054] In some embodiments, as Figure 1 and Figure 2 shown in Figure 2 , a protective box 360 is further fixed on the bottom plate 100. The protective box 360 covers the bracket 310, the toggling member 320 and the rotating member 330, playing a protective role for the bracket 310, the toggling member 320 and the rotating member 330, preventing them from being directly exposed and being easily damaged.

[0055] The protective box 360 is provided with a slot for a part of the handle 200 or the rotating member 330 to extend out, and for the extended part of the handle 200 or the rotating member 330 to rotate, so as not to hinder the folding of the handle 200. Considering that the free end of the toggling member 320 extends outwards for a relatively long distance, the protective box 360 may also be provided with a notch for the free end of the toggling member 320 to extend out of the protective box 360 through the notch.

[0056] In some embodiments, as Figure 5 shown in Figure 5 , a stop bar 312 is connected to the bracket 310, and a stop block 333 is provided on the rotating member 330. When the handle 200 is in the use state, the stop block 333 abuts against the stop bar 312 to limit the handle 200 from rotating in the direction opposite to the folding direction. Thus, the handle 200 is blocked by the locking block 340 when rotating in the folding direction, and is blocked by the stop bar 312 when rotating in the direction opposite to the folding direction. The handle 200 can relatively stably maintain the use state and will not shake randomly, ensuring the normal use of the entire trolley by the user.

[0057] In some embodiments, as Figure 1 , Figure 2 and Figure 10As shown, the handle 200 is provided with a connecting base 220. The connecting base 220 can be integrally formed with the handle 200 or fixed to the handle 200. The connecting base 220 is provided with a sliding groove, and the pressing member 510 is inserted into and slides along the sliding groove. Compared to the handle 200 itself, the connecting base 220 provides a larger assembly space, facilitating the installation of the pressing member 510. The sliding groove also guides the sliding of the pressing member 510, allowing it to stably extend and retract along a predetermined direction.

[0058] A spring may be provided at the bottom of the sliding groove, with one end of the spring abutting against the connecting seat 220 and the other end abutting against the pressing piece 510, so that the pressing piece 510 can elastically expand and contract. After the user presses the pressing piece 510, the pressing piece 510 can retract. When the force applied by the user disappears, the pressing piece 510 elastically returns to its original position under the action of the elastic restoring force of the spring, thereby extending outward.

[0059] Furthermore, one end of the pull rope 410 close to the pressing piece 510 is connected to a connecting column 412, and the pressing piece 510 is provided with a guiding slope 511, which is inclined relative to the extension and retraction direction of the pressing piece 510. The connecting column 412 abuts against the guiding slope 511, and during the retraction process of the pressing piece 510, the guiding slope 511 pushes the connecting column 412.

[0060] Because the guide slope 511 is tilted, when the pressing member 510 retracts, the connecting post 412 can move along the guide slope 511, gradually pushing the connecting post 412 away from the toggle member, which in turn drives the pull cord 410 away from the toggle member, thereby pulling the toggle member. When the pressing force applied by the user disappears, the pressing member 510 elastically returns to its original position, and the toggle member also elastically returns to its original position, which in turn drives the pull cord 410 toward the toggle member, and the connecting post 412 connected to the pull cord 410 returns to its original position along the guide slope 511.

[0061] In some embodiments, as Figure 1 、 Figure 2 and Figure 10 As shown, the connector 220 is provided with a safety mechanism 520 that can restrict the retraction of the pressing member 510 or release the restriction on the pressing member 510. When the safety mechanism 520 restricts the retraction of the pressing member 510, the user will not press the pressing member 510 due to mistaken operation, which will prevent the locking block from accidentally separating from the locking structure and the handle 200 from folding due to mistaken operation, ensuring that the user can use the handle 200 normally. When the safety mechanism 520 releases the restriction on the pressing member 510, the user can press the pressing member 510, which will correspondingly separate the locking block from the locking structure, and the handle 200 can be folded as needed.

[0062] Furthermore, the safety mechanism 520 includes a sliding seat 521 and a spring 522. The sliding seat 521 is slidably connected to the connecting seat 220. One end of the spring 522 is connected to the connecting seat 220, and the other end is connected to the sliding seat 521. The pressing member 510 includes an abutment 512. The sliding seat 521 can slide relative to the connecting seat 220 to a first position or a second position. The spring 522 applies a force to the sliding seat 521, causing the sliding seat 521 to remain in the first position. When the sliding seat 521 is in the first position, the sliding seat 521 is located in front of the abutment 512 in the retraction direction, and the sliding seat 521 abuts the abutment 512 to prevent the pressing member 510 from retracting. When the user applies a force to the sliding seat 521, causing the sliding seat 521 to overcome the pulling force of the spring 522, the sliding seat 521 can move to the second position. The sliding seat 521 in the second position moves out from the front of the abutment portion 512 in the retraction direction. The sliding seat 521 no longer abuts the abutment portion 512, and does not restrict the retraction of the pressing member 510. The user can operate the pressing member 510 to retract the pressing member 510.

[0063] In some embodiments, as Figure 3 、 Figure 4 and Figure 5 As shown, a tension spring 420 is provided on the bracket 310. One end of the tension spring 420 is connected to the bracket 310, and the other end is connected to the free end of the toggle member 320. The direction of the tension generated by the tension spring 420 is opposite to the pulling direction of the pull cord 410. Therefore, when the force applied by the user to the pressing member 510 disappears, the tension spring 420 can pull the toggle member 320, causing the toggle member 320 to rotate in the direction opposite to the pulling direction of the pull cord 410, and the toggle member 320 can be reset. This ensures that the toggle member 320 can be elastically reset when the pressing member 510 is extended.

[0064] One end of the tension spring 420 can be hooked on the rotating rod 323 of the above embodiment, and the other end can be fixed to the bracket 310 by welding or other methods.

[0065] In some embodiments, the locking block 340 and the locking structure 331 of the above embodiment may be provided in two sets. The locking cooperation of the two sets of locking blocks 340 and the locking structure 331 can stably restrict the rotation of the handle 200, enhance the limiting effect, and ensure the normal use of the handle 200. Correspondingly, two sets of springs 350 can also be provided.

[0066] The terms and words used in the above description and claims are not limited to the literal meanings, but are merely used by the applicant to enable a clear and consistent understanding of the present invention. Therefore, it should be clear to those skilled in the art that the above description of various embodiments of the present invention is provided for illustration only and is not intended to limit the present invention as defined by the appended claims and their equivalents.

Claims

1. A trolley with foldable handles, characterized by: The cam is adapted to engage the locking member when the handle is in a folded position and to engage the locking member when the cam is in a folded position.

2. The trolley with foldable handle according to claim 1, characterized in that: The rotation axis of the toggle member and the bracket is coaxially arranged with the rotation axis of the rotating member and the bracket; the rotating member is provided with a rotation groove, and the locking block is inserted into the rotation groove and can move along the rotation groove.

3. The trolley with foldable handle according to claim 2, characterized in that: The locking structure is a limiting protrusion provided on the inner wall of the rotation groove. When the limiting protrusion abuts against the end face of the locking block, the locking block and the limiting protrusion are locked and matched.

4. The trolley with foldable handle according to claim 3, characterized in that: The toggle piece is provided with a toggle groove, the locking block is inserted into the toggle groove, and a toggle protrusion is provided on the inner wall of the toggle groove; when the handle is in use, the toggle protrusion abuts against the end of the locking block away from the limit protrusion; when the pressing piece pulls the toggle piece through the pull rope, the toggle protrusion pushes the locking block to rotate in the direction of crossing the limit protrusion.

5. The trolley with foldable handle according to claim 3, characterized in that: The bracket is provided with a card slot, the locking block is penetrated in the card slot, a spring piece is fixed in the card slot, and the spring piece abuts against the end surface abutted by the limiting protrusion of the locking block.

6. The trolley with foldable handle according to any one of claims 1 to 5, characterized in that: The handle includes a gripping portion, and the pressing member is arranged on the gripping portion.

7. The trolley with foldable handle according to any one of claims 1 to 5, characterized in that: The bracket is connected with a stop rod, and the rotating member is provided with a stop block. When the handle is in use, the stop block abuts against the stop rod to limit the handle from rotating in a direction opposite to the folding direction.

8. The trolley with foldable handle according to any one of claims 1 to 5, characterized in that: The handle is provided with a connecting seat, and the connecting seat is provided with a sliding groove. The pressing piece is inserted in the sliding groove and can slide along the sliding groove.

9. The trolley with foldable handle according to claim 8, characterized in that: One end of the pull rope close to the pressing piece is connected to a connecting column, and the pressing piece is provided with a guiding slope, which is inclined relative to the extension and contraction direction of the pressing piece. The connecting column abuts the guiding slope, and when the pressing piece retracts, the guiding slope pushes the connecting column.

10. The trolley with foldable handle according to claim 8, characterized in that: A safety mechanism is provided on the connecting seat, which can limit the retraction of the pressing piece or release the restriction on the pressing piece; a tension spring is provided on the bracket, one end of the tension spring is connected to the bracket, and the other end is connected to the free end of the toggle piece, and the direction of the tension generated by the tension spring is opposite to the pulling direction of the pull rope.

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