Folding handle of a trolley

Abstract

The present invention relates to a folding handle of a trolley, comprising a handle body, wherein the handle body is a hollow shell, and at least one hinged part is provided on the handle body, each of the hinged parts is rotatably connected to a fixed frame, and a through opening is provided on the handle body, and the through opening is connected to the inside of the handle body, and a mounting groove is provided in the handle body at the through opening, and a pressing mechanism is provided on the mounting groove, and an elastic mechanism is provided in at least one of the hinged parts. The present invention relates to the field of trolleys, and the elastic mechanism is driven to move by pressing the pressing mechanism by hand, so that the handle body can be rotated on the fixed frame, which is simple and labor-saving to operate, and is convenient for the transportation and storage of the trolley, and solves the technical problems that some trolleys that cannot be folded occupy a large space and have a high transportation cost, and some foldable trolleys have cumbersome folding operations and certain safety hazards.

Description

Technical Field

[0001] The invention relates to the field of trolleys, and in particular to a foldable handle of a trolley. Background Art

[0002] A trolley is a transport vehicle that is pushed and pulled by manpower. Although the material handling technology of trolleys continues to develop, trolleys are still used as an indispensable transport tool. Trolleys are widely used in production and life because they are low in cost, simple to maintain, easy to operate, and light in weight. They can work in places where motor vehicles are inconvenient to use, and are very convenient for transporting lighter items over short distances. During the production process, a trolley usually includes a base plate, universal wheels arranged under the base plate, and a handle arranged on the base plate. Goods or other items are placed on the base plate, and the user pushes the handle to transport the goods. The angle between the handle and the base plate is usually about 90 degrees. With this structure, the trolley takes up a large space when not in use, and when a large number of trolleys are produced, a larger warehouse is required to place the trolleys, and when the trolleys are transported, the trolleys need to occupy a large space, the transportation cost is high, and the transportation efficiency is low. When transporting some trolleys, the handles of the trolleys are disassembled for transportation. Although the transportation space can be reduced, it takes more time to install the handles on a large number of trolleys, which wastes a lot of manpower and material resources and has a high transportation cost.

[0003] Some existing trolleys are foldable, with the handle hinged to the bottom plate. Usually, a fixing piece is provided at the hinge between the handle and the bottom plate, through which the handle and the bottom plate are fixed. When the fixing piece is removed, the handle can be rotated and folded on the bottom plate. With this structure, the user needs to bend over or squat to remove the fixing piece. Usually, there are at least two connections between the handle and the bottom plate, and at least two fixing pieces are required, which makes folding inconvenient. During production or transportation, there are a large number of trolleys. When folding and opening each trolley, the user needs to squat or bend over at least once to remove or install the fixing piece, which consumes a lot of manpower to fold and open the trolley. The fixing piece is provided at the connection between the bottom plate and the handle, which may pinch the user's hand, bringing certain safety hazards.

[0004] Chinese patent application No.: 201721899734.3 discloses a cargo transport trolley with excellent shock absorption effect, including a trolley placement plate and a wheel frame, a push rod is fixedly installed at the upper end of the outer surface of the trolley placement plate near the rear end, and a rubber anti-skid ring is fixedly installed at the upper end of the outer surface of the push rod near the upper end, a baffle is fixedly installed at the upper end of the outer surface of the trolley placement plate near the rear end and the outer surface of the push rod near the middle position, hooks are fixedly installed at both ends of the outer surface of the trolley placement plate, and a placement groove is provided at the lower end of the outer surface of the trolley placement plate. The push rod of the trolley is fixed on the placement plate, and the push rod cannot be folded. When storing or transporting the trolley, the trolley needs to occupy a large space, and the production and transportation costs are high.

[0005] Chinese patent application number: 201822001211.3, discloses a foldable flatbed trolley and a fixing device thereof, including a trolley and a fixing device, the trolley can be fixed on the fixing device, the trolley includes a handle, a rotating structure, a bottom plate and a roller, the handle is arranged on the bottom plate through the rotating structure, the trolley is folded by means of the rotating structure, the roller is arranged at the bottom, the fixing device includes a supporting foot and a fixing frame arranged on the supporting foot, and the fixing frame is provided with a first fixing structure and a second fixing structure. The folding method of the trolley is relatively complicated and the operation is not simple. In the second embodiment, the height of the guide is changed by changing the height of the handle so that the guide slides into the arc groove, and the handle can be swing-folded by means of the swingability of the swinging member. However, the handle is often heavy, and it takes a lot of force to lift the handle. In the use of the trolley, it is possible to lift the handle with improper force, so that the handle swings. When moving heavy objects, especially when going up and down the slope, it is possible to damage the trolley and the objects, and even injure the user, which has certain safety hazards. Summary of the invention

[0006] Therefore, in view of the above problems, the present invention proposes a folding handle for a trolley, which solves the technical problems that some trolleys that cannot be folded take up a lot of space and have high transportation costs, and some foldable trolleys have cumbersome folding operations and certain safety hazards.

[0007] To achieve the above object, the present invention adopts the following technical solutions:

[0008] A folding handle of a trolley, comprising a handle body, the handle body being a hollow shell, the handle body being provided with at least one hinged portion, each of the hinged portions being rotatably connected to a fixing frame, the handle body being provided with a through opening, the through opening being connected to the inside of the handle body, a mounting groove being provided in the handle body at the through opening, a pressing mechanism being provided on the mounting groove, and an elastic mechanism being provided in at least one of the hinged portions;

[0009] The pressing mechanism includes a button mechanism and a slider seat arranged in the mounting groove, at least one slider slidably arranged on the slider seat, a pulling member is connected between the slider and the elastic mechanism, the slider seat is provided with at least one first sliding groove, the slider is slidably arranged in the first sliding groove, the slider is provided with a first connecting portion, the first connecting portion is provided with a first inclined surface, and the first inclined surface is inclined downward along the pulling member direction; the slider seat is provided with a second sliding groove conductive with the first sliding groove, the button mechanism is provided with at least one second connecting portion, the second connecting portion can slide along the second sliding groove, the second connecting portion is provided with a second inclined surface corresponding to the first inclined surface, the second inclined surface abuts against the corresponding first inclined surface, the sliding direction of the button mechanism is perpendicular to the sliding direction of the slider, and the button mechanism pushes the slider to slide along the first sliding groove; the slider seat is provided with a button spring, and the button spring is connected to the button mechanism;

[0010] The elastic mechanism is provided with a sliding key, the pressing mechanism pushes the transmission sliding key to move, the fixing frame is provided with a first positioning long hole, and the sliding key can be inserted into the first positioning long hole.

[0011] Further:

[0012] The elastic mechanism includes a sliding key seat, which is slidably arranged in the handle body, a fixing part for fixing the pulling member is arranged on the top of the sliding key seat, a spring opening is arranged on the sliding key seat below the fixing part, a compression spring is arranged in the spring opening, a rivet long hole is arranged in the spring opening, a rivet hole corresponding to the rivet long hole is arranged on the handle body, a rivet is inserted in the rivet hole, the rivet passes through the rivet long hole, and the compression spring abuts against the rivet; a hinged long hole is arranged on the sliding key seat below the spring opening, a first hinged hole corresponding to the hinged long hole is arranged on the handle body, and a first hinged hole corresponding to the hinged long hole is arranged on the fixing frame A second hinge hole corresponding to the hinge long hole is provided, and a hinge part is passed through and fixed to the first hinge hole and the second hinge hole, and the hinge part passes through the hinge long hole, and the handle body can rotate along the hinge part; a slide key hole is provided on the slide key seat below the hinge long hole, and the slide key is passed through and fixed in the slide key hole, and a second positioning long hole corresponding to the first positioning long hole is provided on the handle body, and the slide key passes through the second positioning long hole; an arc hole is provided on the fixing frame, and the first positioning long hole and the arc hole are conductively connected, the slide key can pass through the arc hole, and the slide key can move along the first positioning long hole and the arc hole.

[0013] The pulling member includes a steel wire rope and plug-ins arranged at both ends of the steel wire rope; the fixed part is provided with a wire groove and a positive integer number of first plug holes, the first plug holes are connected to the wire groove, and the plug-in can be inserted and fixed in the first plug hole; the sliding block is provided with a second plug hole, and the plug-in can be inserted and fixed in the second plug hole.

[0014] A support frame with an opening facing downward is disposed outside the fixing frame, a third hinge hole corresponding to the hinged member is disposed on the support frame, and a yielding opening is disposed on the support frame.

[0015] An upper sealing cover and a lower sealing cover are provided on the handle body at the opening. The upper sealing cover and the lower sealing cover are fixed to the handle body by screws. A pressing opening corresponding to the key mechanism is provided on the upper sealing cover.

[0016] A limiting groove is provided at the bottom of the sliding block, and at least one limiting member is provided on the lower sealing cover. The limiting member penetrates the handle body and extends into the limiting groove.

[0017] A fixing bolt is inserted at the bottom of the lower sealing cover, a spring seat is arranged on the slider seat, a threaded slot is arranged at the bottom of the spring seat, and the fixing bolt passes through the lower sealing cover and the handle body and is threadedly connected to the threaded slot.

[0018] The first inclined surface has an angle of 45 degrees.

[0019] The handle body is in the shape of a door, and includes a first horizontal portion and a first vertical portion connected to both ends of the first horizontal portion. The through opening is arranged on the first horizontal portion. The number of the elastic mechanisms is two, and the two elastic mechanisms are respectively arranged at the lower ends of the two first vertical portions. The button mechanism is provided with two first connecting portions. The number of the sliders is two, and the number of the first slide grooves and the number of the second slide grooves are two respectively. The two first slide grooves are symmetrically arranged on the slider seat, and the two second slide grooves are symmetrically arranged on the slider seat. The number of the fixing frames is two.

[0020] The handle body is T-shaped, and includes a second transverse portion and a second vertical portion connected to the second transverse portion. The through opening is arranged at the second transverse portion or the second vertical portion. The number of the elastic mechanism is one, and the elastic mechanism is arranged at the lower end of the handle body. A first connecting portion is provided on the button mechanism. The number of the slider is one, the number of the first slide groove and the number of the second slide groove are one respectively, and the number of the fixing frame is one.

[0021] By adopting the above technical solution, the beneficial effects of the present invention are:

[0022] The present invention presses the button mechanism on the handle body, and when the button mechanism moves and is pressed down, the first inclined surface abuts against the second inclined surface, and the first inclined surface and the second inclined surface slide relative to each other, driving the slider to move along the first slide groove, and the slider drives the pulling member to move, and the pulling member pulls the sliding key of the elastic mechanism to move, so that the slide frame moves from the first positioning long hole to the arc hole. At this time, the handle body can be rotated on the fixed frame, and during the rotation process, the first positioning long hole moves along the arc hole, so that the handle body can be folded on the trolley. The folded trolley occupies little space, which is convenient for transportation and storage of the trolley. The pressing method is stable, accurate, simple and labor-saving, and only needs to be pressed with a finger. After the handle body is rotated to a certain angle, the handle body is tilted to a certain angle When the user lets go of the handle, the handle body automatically rotates and folds into the trolley by its own gravity. The user does not need to bend over to fold the handle, and the key spring automatically resets the key mechanism, which is simple and practical. When opening the handle, it is only necessary to manually turn the handle. At this time, the slide key moves to the junction of the arc hole and the first positioning long hole. Due to the force of the elastic mechanism, the slide key slides into the first positioning long hole, which is simple and convenient. Furthermore, the slide key seat on the elastic mechanism can slide in the handle body, and a compression spring is provided in the spring mouth. During the transportation of the trolley, vibration is likely to occur. The slide key seat and the slide key can move appropriately, which has a certain buffering effect, preventing deformation or damage of certain parts of the pressing mechanism or the elastic mechanism, especially The sliding key plays a positioning role; when the button mechanism on the handle body is pressed, the button mechanism moves, and the sliding key seat and the sliding key move. At this time, the compression spring abuts against the rivet, and the compression spring applies a force in the opposite direction to the sliding key seat. When the handle is opened, the sliding key can automatically reset, which is simple and practical. Furthermore, the pulling piece has a simple structure and is easy to install. The two plug-ins can be directly inserted into the first socket and the second socket respectively to be fixed. When the number of the first sockets is not less than two, the pressing stroke of the button mechanism can be adjusted according to the selection of different first sockets. The longer the length of the wire rope in the wire groove is, the shorter the pressing stroke of the button mechanism is, and the shorter the length of the wire rope in the wire groove is, and the faster the button is pressed. The longer the pressing stroke of the mechanism, and due to production quality, the length of the wire rope may have errors, and the error of the wire rope can be compensated by selecting a suitable first jack; further, a support frame is arranged outside the fixed frame, and the support frame plays a protective support role, preventing the fixed frame from being deformed by long-term force, thereby enhancing the bearing capacity of the fixed frame; further, the upper sealing cover and the lower sealing cover not only have the function of dust prevention, but also have the function of protecting the pressing mechanism, and the trolley is prevented from touching the pressing mechanism by mistake during transportation; further, the limit groove and the limit member can limit the sliding stroke of the slider, thereby limiting the pressing stroke of the key mechanism, preventing the slider from colliding with the slider seat due to excessive pressing force, and preventing damage to the pressing mechanism;Further, the angle of the first inclined surface is 45 degrees. When the tilt angle is larger, the force required to press the button mechanism is smaller, and the stroke of the button mechanism is larger, and the diameter of the handle body is larger. When the tilt angle is smaller, the force required to press the button mechanism is larger, and the stroke of the button mechanism is smaller. 45 degrees is the middle value, so that the diameter of the handle body is moderate and the pressing force is moderate; further, the handle is in the shape of a door, and the two sliding keys can be pushed to move by pressing the button mechanism once, and the operation is simple and fast; further, the folding handle is assembled from multiple parts. When a part is damaged, the part can be maintained and replaced, and the folding and disassembly are convenient, and the maintenance and replacement are convenient, and the production cost is low. ; BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a structural schematic diagram of embodiment 1;

[0024] Figure 2 is an exploded view of the first embodiment;

[0025] Figure 3 is a schematic diagram of the structure of the pressing mechanism in the first embodiment in an exploded state;

[0026] Figure 4 is a schematic diagram of the cross-sectional structure of the pressing mechanism of the first embodiment;

[0027] Figure 5 It is a schematic diagram of the structure of the elastic mechanism and the fixing frame in the exploded state of the first embodiment;

[0028] Figure 6 is a schematic structural diagram of a cross-sectional state of the elastic mechanism after the pressing mechanism of the first embodiment is pressed;

[0029] Figure 7 is a cross-sectional view of the pressing mechanism of the first embodiment after pressing;

[0030] Figure 8 is a structural schematic diagram of a trolley in Embodiment 1;

[0031] Fig. 9 is a schematic diagram of the structure of the trolley of Embodiment 1 after being folded;

[0032] Fig.10 is a structural diagram of Embodiment 2;

[0033] Fig.11 It is a cross-sectional view of the pressing mechanism of the second embodiment. DETAILED DESCRIPTION

[0034] The present invention will now be further described with reference to the accompanying drawings and specific implementation methods. Embodiment 1

[0035] refer to Figures 1 to 9The present embodiment provides a folding handle of a trolley, comprising a handle body 1, the handle body 1 is in the shape of a gate, the handle body 1 comprises a first transverse portion 11 and a first vertical portion 12 connected to both ends of the first transverse portion 11, the handle body 1 is a tubular shell, the first vertical portion 12 is provided with two hinged portions 13, each hinged portion 13 is rotatably connected to a fixing frame 5, the first transverse portion 11 is provided with a through opening 14, the through opening 14 is connected to the inside of the handle body 1, a mounting groove 15 is provided in the handle body 1 at the through opening 14, a pressing mechanism 2 is provided on the mounting groove 15, and an elastic mechanism 3 is provided in each hinged portion 13;

[0036] The pressing mechanism 2 includes a button mechanism 21 and a slider seat 22 arranged in the installation groove 15, two sliders 23 slidably arranged on the slider seat 22, a pulling member 4 is connected between the slider 23 and the elastic mechanism 3, two first slide grooves 221 are symmetrically arranged on the slider seat 22, each slider 23 is slidably arranged in the first slide groove 221, a first connecting portion 231 is arranged on the slider 23, the first connecting portion 231 is a groove, a first inclined surface 232 is arranged on the first connecting portion 231, the inclined surface angle of the first inclined surface 232 is 45 degrees, and the first inclined surface 232 is inclined downward along the direction of the pulling member 4; the slider seat 22 is provided with two first slide grooves 221, each slider 23 is slidably arranged in the first slide groove 221, and a first connecting portion 231 is arranged on the slider 23, and the first connecting portion 231 is provided with a first inclined surface 232, and the inclined surface angle of the first inclined surface 232 is 45 degrees, and the first inclined surface 232 is inclined downward along the direction of the pulling member 4; A second slide groove 222 connected to a slide groove 221, two second connecting parts 211 are provided on the key mechanism 21, and the second connecting parts 211 can slide along the corresponding second slide grooves 222 respectively, and a second inclined surface 212 corresponding to the first inclined surface 232 is provided on the second connecting part 211, and the second inclined surface 212 abuts against the corresponding first inclined surface 232, and the inclination angle of the second inclined surface 212 is 45 degrees, and the sliding direction of the key mechanism 21 is perpendicular to the sliding direction of the slider 23, and the key mechanism 21 pushes the transmission slider to slide along the first slide groove 221; a key spring 24 is provided on the slider seat 22, and the key spring 24 is connected to the key mechanism 21;

[0037] A sliding key 30 is provided on the elastic mechanism 3, and a first positioning long hole 51 and an arc hole 52 are provided on the fixing frame 5. The first positioning long hole 51 and the arc hole 52 are conductively connected, and the sliding key 30 passes through the first positioning long hole 51. The sliding key 30 can move along the first positioning long hole 51 and the arc hole 52. The elastic mechanism 3 includes a slide key seat 31, which is slidably arranged in the handle body 1. A fixing portion 311 for fixing the pull member 4 is provided on the top of the slide key seat 31. A spring opening 312 is provided on the slide key seat 31 below the fixing portion 311. A compression spring 32 is provided in the spring opening 312. A rivet long hole 313 is provided in the spring opening 312. A rivet hole 131 corresponding to the rivet long hole 313 is provided on the handle body 1. A rivet 3130 is inserted into the rivet hole 131. The rivet 3130 passes through the rivet long hole 313, and the compression spring 32 abuts against the rivet 3130. The slide key seat 31 is provided with a hinged long hole 313 below the spring opening 312. 14. The handle body 1 is provided with a first hinge hole 132 corresponding to the hinge long hole 314, and the fixing frame 5 is provided with a second hinge hole 53 corresponding to the hinge long hole 314. A hinge 3140 is passed through and fixed on the first hinge hole 132 and the second hinge hole 53. The hinge 3140 passes through the hinge long hole 314, and the handle body 1 can rotate along the hinge 3140. A slide key hole 315 is provided on the slide key seat 31 below the hinge long hole 314, and the slide key 30 is passed through and fixed in the slide key hole 315. The handle body 1 is provided with a second positioning long hole 133 corresponding to the first positioning long hole 51, and the slide key 30 passes through the second positioning long hole 133.

[0038] A support frame 6 with an opening facing downward is disposed outside the fixing frame 5 . A third hinge hole 61 corresponding to the hinge member 3140 is disposed on the support frame 6 . A clearance opening 62 is disposed on the support frame 6 .

[0039] The pulling member 4 includes a steel wire rope 41 and plug-ins 42 arranged at both ends of the steel wire rope 41; a wire groove 3111 and a positive integer number of first plug holes 3112 are provided on the fixing portion 311, the first plug holes 3112 are connected to the wire groove 3111, and the plug-in 42 can be inserted and fixed in the first plug hole 3112; a second plug hole 233 is provided on the slider, and the plug-in 42 can be inserted and fixed in the second plug hole 233.

[0040] An upper sealing cover 16 and a lower sealing cover 17 are provided at the opening 14 of the handle body 1. The upper sealing cover 16 and the lower sealing cover 17 are fixed to the handle body 1 by screws. The upper sealing cover 16 is provided with a pressing port 161 corresponding to the key mechanism 21. A limiting groove 234 is provided at the bottom of the slider. Two limiting members 171 are provided on the lower sealing cover 17. The two limiting members 171 respectively penetrate the handle body and extend into the two limiting grooves 234. A fixing bolt 172 is inserted at the bottom of the lower sealing cover 17. A spring seat 223 is provided on the slider seat 22. A threaded slot is provided at the bottom of the spring seat 223. The fixing bolt 172 penetrates the lower sealing cover 17 and the handle body 1 and is threadedly connected to the threaded slot. Two first slide grooves 221 are symmetrically provided on both sides of the spring seat 223. Two second slide grooves 222 are symmetrically provided on both sides of the spring seat 223. The symmetrical structure enables the key mechanism 21 to be balanced when pressed. The two sliding keys can be pushed to move by pressing the key mechanism 21 once.

[0041] The inclination angle of the first inclined surface 232 and the second inclined surface 212 can be 30 degrees to 60 degrees. When the inclination angle is larger, the force of pressing the button mechanism 21 is smaller, and the stroke of pressing the button mechanism 21 is larger, and the tube diameter of the handle body 1 is larger. When the inclination angle is smaller, the force of pressing the button mechanism 21 is larger, and the stroke of pressing the button mechanism 21 is smaller. The angle is usually set to an intermediate value of 45 degrees, and can also be set to other angles, depending on other specific situations.

[0042] The above-mentioned limiting groove 234 is usually set as a T-slot structure, which is a well-known structure. It can also be set as other structures, which will not be described in detail here.

[0043] The elastic mechanism 3 may also adopt other structures. The elastic mechanism 3 is pulled by the steel wire rope 41 so that the sliding key of the elastic mechanism 3 moves from the first positioning long hole 51 to the junction of the arc hole 52 and the first positioning long hole 51. This is a well-known structure and will not be described in detail here.

[0044] The handle body 1 of the present invention may also be configured as other structures, depending on specific circumstances.

[0045] Folding handle assembly:

[0046] For the pressing mechanism 2, first fix the lower sealing cover 17 to the lower end of the mounting groove 15 of the handle body 1 by screws, place the two sliders in the mounting groove 15, and insert the limiting grooves 234 of the two sliders into the limiting members 171, insert the plug-in 42 at one end of the wire rope 41 into the second plug hole 233 for fixing, and place the slider seat 22 from the through opening 14 from top to bottom in the mounting groove 15. At this time, the two first slide grooves 221 are respectively sleeved on the two sliders, and the slider seat 22 is fixed by the fixing bolts 172, and then the button mechanism 21 is installed, and the two second connecting parts 211 of the button mechanism 21 are respectively inserted into the two second slide grooves 222, and the second inclined surface 212 is against and fits the first inclined surface 232, and finally the upper sealing cover 16 is fixed to the handle body 1 by screws; the disassembly and assembly are simple and convenient, and it is convenient for maintenance and replacement of parts.

[0047] For the installation of the elastic mechanism 3, the compression spring 32 is placed in the spring mouth 312, the plug-in 42 at one end of the wire rope 41 is inserted into the first insertion hole 3112, the slide key seat 31 is inserted into the hinge part 13 of the handle body 1, the rivet 3130 is inserted into the rivet hole 131 and the rivet long hole 313 for fixation, and the upper end of the compression spring 32 is against the rivet 3130, the hinge part 13 is inserted into the support frame 6 and the fixing frame 5 respectively in turn, the slide key 30 is inserted into the first positioning long hole 51, the second positioning long hole 133, and the slide key hole 315, the support frame 6 is mounted on the fixing frame 5, the hinge 3140 is inserted into the first hinge hole 132, the second hinge hole 53, the third hinge hole 61, and the hinge long hole 314, and finally the fixing frame 5 and the support frame 6 are fixed to the trolley, and the installation is simple and convenient.

[0048] The working method of the first embodiment is:

[0049] When the trolley is used to transport items, the user holds the horizontal part of the handle body 1 to transport the items. When the trolley needs to be stored, the user presses the button mechanism 21 at the opening 14. When the button mechanism 21 moves downward, the first inclined surface 232 abuts against the second inclined surface 212. The first inclined surface 232 slides relative to the second inclined surface 212, driving the two sliders to move along the first slide groove 221. The two sliders move oppositely, and the slider drives the pulling member 4 to move. The pulling member 4 pulls the sliding key of the elastic mechanism 3 to move upward, so that the slide moves from the first positioning long hole to the arc hole 52. At this time, the handle body 1 can be rotated. During the rotation of the fixing frame 5, the first positioning long hole moves along the arc hole 52, and the handle body 1 is tilted at a certain angle. When the user lets go of the hand, the handle body 1 automatically rotates and folds onto the trolley through its own gravity, and the user does not need to bend over. When the handle body 1 is folded, it is convenient for the storage and transportation of the trolley, which is simple and practical. When opening the handle, it is only necessary to manually rotate the handle. When the handle is opened to the maximum, the slide key moves to the junction of the arc hole 52 and the first positioning long hole. Due to the force of the compression spring 32 of the elastic mechanism 3, it is simple and convenient for the slide key to slide into the first positioning long hole. Embodiment 2

[0050] refer to Figures 1 to 11 , the difference between the second embodiment and the first embodiment is that: the handle body 1 is a T-shaped tube, the handle body 1 includes a second horizontal portion and a second vertical portion connected to the second horizontal portion, the through-portion 14 is provided on the second horizontal portion, the number of the elastic mechanism 3 is one, the structure of the elastic mechanism 3 is the same as that of the first embodiment, the elastic mechanism 3 is provided at the lower end of the handle body 1, a first connecting portion 231 is provided on the button mechanism 21, the number of the slider is one, the number of the first slide groove 221 and the number of the second slide groove 222 are one respectively, and the number of the fixing frame 5 is one. The principle of the second embodiment is the same as that of the first embodiment, and will not be repeated here. The through-portion 14 can also be provided on the second vertical portion, and the pressing mechanism 2 is vertically provided, which is provided according to the specific situation.

[0051] Although the present invention has been specifically shown and described in conjunction with the preferred embodiments, it should be understood by those skilled in the art that various changes may be made to the present invention in form and details without departing from the spirit and scope of the present invention as defined by the appended claims, all of which are within the scope of protection of the present invention.

Claims

1. A folding handle of a trolley, comprising a handle body, characterized in that: The handle body is a hollow shell, and at least one hinged part is provided on the handle body, and each hinged part is rotatably connected to a fixing frame. The handle body is provided with a through opening, and the through opening is connected to the inside of the handle body. A mounting groove is provided in the handle body at the through opening, and a pressing mechanism is provided on the mounting groove. At least one of the hinged parts is provided with an elastic mechanism. The pressing mechanism includes a button mechanism and a slider seat arranged in the mounting groove, at least one slider slidably arranged on the slider seat, a pulling member is connected between the slider and the elastic mechanism, the slider seat is provided with at least one first sliding groove, the slider is slidably arranged in the first sliding groove, the slider is provided with a first connecting portion, the first connecting portion is provided with a first inclined surface, and the first inclined surface is inclined downward along the pulling member direction; the slider seat is provided with a second sliding groove conductive with the first sliding groove, the button mechanism is provided with at least one second connecting portion, the second connecting portion can slide along the second sliding groove, the second connecting portion is provided with a second inclined surface corresponding to the first inclined surface, the second inclined surface abuts against the corresponding first inclined surface, the sliding direction of the button mechanism is perpendicular to the sliding direction of the slider, and the button mechanism pushes the slider to slide along the first sliding groove; the slider seat is provided with a button spring, and the button spring is connected to the button mechanism; The elastic mechanism is provided with a sliding key, the pressing mechanism pushes the transmission sliding key to move, the fixing frame is provided with a first positioning long hole, and the sliding key can be inserted into the first positioning long hole.

2. A foldable handle for a trolley according to claim 1, characterized in that: The elastic mechanism includes a sliding key seat, which is slidably arranged in the handle body, a fixing part for fixing the pulling member is arranged on the top of the sliding key seat, a spring opening is arranged on the sliding key seat below the fixing part, a compression spring is arranged in the spring opening, a rivet long hole is arranged in the spring opening, a rivet hole corresponding to the rivet long hole is arranged on the handle body, a rivet is inserted in the rivet hole, the rivet passes through the rivet long hole, and the compression spring abuts against the rivet; a hinged long hole is arranged on the sliding key seat below the spring opening, a first hinged hole corresponding to the hinged long hole is arranged on the handle body, and a first hinged hole corresponding to the hinged long hole is arranged on the fixing frame A second hinge hole corresponding to the hinge long hole is provided, and a hinge part is passed through and fixed to the first hinge hole and the second hinge hole, and the hinge part passes through the hinge long hole, and the handle body can rotate along the hinge part; a slide key hole is provided on the slide key seat below the hinge long hole, and the slide key is passed through and fixed in the slide key hole, and a second positioning long hole corresponding to the first positioning long hole is provided on the handle body, and the slide key passes through the second positioning long hole; an arc hole is provided on the fixing frame, and the first positioning long hole and the arc hole are conductively connected, the slide key can pass through the arc hole, and the slide key can move along the first positioning long hole and the arc hole.

3. The foldable handle of a trolley according to claim 2, characterized in that: The pulling member includes a steel wire rope and plug-ins arranged at both ends of the steel wire rope; the fixed part is provided with a wire groove and a positive integer number of first plug holes, the first plug holes are connected to the wire groove, and the plug-in can be inserted and fixed in the first plug hole; the sliding block is provided with a second plug hole, and the plug-in can be inserted and fixed in the second plug hole.

4. The foldable handle of a trolley according to claim 2, characterized in that: A support frame with an opening facing downward is disposed outside the fixing frame, a third hinge hole corresponding to the hinged member is disposed on the support frame, and a yielding opening is disposed on the support frame.

5. The foldable handle of a trolley according to claim 1, characterized in that: An upper sealing cover and a lower sealing cover are provided on the handle body at the opening. The upper sealing cover and the lower sealing cover are fixed to the handle body by screws. A pressing opening corresponding to the key mechanism is provided on the upper sealing cover.

6. The foldable handle of a trolley according to claim 5, characterized in that: A limiting groove is provided at the bottom of the sliding block, and at least one limiting member is provided on the lower sealing cover. The limiting member penetrates the handle body and extends into the limiting groove.

7. The foldable handle of a trolley according to claim 5, characterized in that: A fixing bolt is inserted at the bottom of the lower sealing cover, a spring seat is arranged on the slider seat, a threaded slot is arranged at the bottom of the spring seat, and the fixing bolt passes through the lower sealing cover and the handle body and is threadedly connected to the threaded slot.

8. The foldable handle of a trolley according to claim 1, characterized in that: The first inclined surface has an angle of 45 degrees.

9. A foldable handle for a trolley according to any one of claims 1 to 8, characterized in that: The handle body is in the shape of a door, and includes a first horizontal portion and a first vertical portion connected to both ends of the first horizontal portion. The through opening is arranged on the first horizontal portion. The number of the elastic mechanisms is two, and the two elastic mechanisms are respectively arranged at the lower ends of the two first vertical portions. The button mechanism is provided with two first connecting portions. The number of the sliders is two, and the number of the first slide grooves and the number of the second slide grooves are two respectively. The two first slide grooves are symmetrically arranged on the slider seat, and the two second slide grooves are symmetrically arranged on the slider seat. The number of the fixing frames is two.

10. A foldable handle for a trolley according to any one of claims 1 to 8, characterized in that: The handle body is T-shaped, and includes a second transverse portion and a second vertical portion connected to the second transverse portion. The through opening is arranged at the second transverse portion or the second vertical portion. The number of the elastic mechanism is one, and the elastic mechanism is arranged at the lower end of the handle body. A first connecting portion is provided on the button mechanism. The number of the slider is one, the number of the first slide groove and the number of the second slide groove are one respectively, and the number of the fixing frame is one.

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