CN213676866U - Shallow - Google Patents

Abstract

The utility model discloses a cart, include: the sunshade comprises two front vertical rods, two rear vertical rods and a sunshade, wherein a group of lateral cross sliding rod assemblies are arranged between the front vertical rods and the rear vertical rods which are positioned on the same side; two upper branch ends of the lateral cross sliding rod component are respectively hinged with the upper ends of the front vertical rod and the rear vertical rod, and two lower branch ends are respectively connected on the rod bodies of the front vertical rod and the rear vertical rod in a sliding manner; the sunshade can be dismantled and be connected in the upper end of pole setting. When the lower branch end of the cross slide bar component at the side part moves upwards to be contacted with the upper end of the upright stanchion, the frame is in a supporting state at the moment; when the lower branch end of the lateral cross sliding rod assembly moves downwards to be in contact with the lower end of the upright rod, the frame is in a furled state at the moment, the height of the furled frame can be reduced, and then the purpose of reducing the size is achieved.

Description

Shallow

Technical Field

The utility model relates to a transportation equipment technical field, in particular to shallow.

Background

The cart is a common transportation device in daily life, and in order to improve the carrying convenience of the cart, the frame of the cart usually has a foldable function.

The existing cart can increase the size in a certain direction after being folded, for example, the height of the existing cart can be increased after the length of the existing cart is reduced, and therefore, the problem of large volume still exists after the existing cart is folded.

Therefore, how to provide a cart with a smaller volume after being folded is a technical problem that needs to be solved by those skilled in the art at present.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a shallow can effectively reduce folding volume.

In order to achieve the above object, the utility model provides a following technical scheme:

a cart, comprising:

the two front vertical rods and the two rear vertical rods are positioned on the same side, and a group of lateral cross sliding rod assemblies are arranged between the front vertical rods and the rear vertical rods; two upper branch ends of the lateral cross sliding rod component are respectively hinged with the upper end of the front vertical rod and the upper end of the rear vertical rod, and two lower branch ends of the lateral cross sliding rod component are respectively connected to the rod body of the front vertical rod and the rod body of the rear vertical rod in a sliding manner;

the sunshade is detachably connected to the upper end of the front upright rod and/or the upper end of the rear upright rod.

Preferably, the sunshade includes connecting piece and many spinal branch vaulting poles, the periphery side of connecting piece is equipped with the recess, many the one end of bracing piece articulates the recess, the recess is used for supplying many the bracing piece winds connecting piece circumference is rotatory, many the other end of bracing piece be used for with the upper end of preceding pole setting and/or the connection can be dismantled to the upper end of back pole setting.

Preferably, still include folding bottom support piece, bottom support piece includes four connecting rods and the connecting block that is located the middle part, the one end of four connecting rods with the connecting block is articulated, the other end respectively with preceding pole setting with the bottom of back pole setting is articulated, two preceding pole setting is connected through preceding cross slide bar assembly, two back pole setting is connected through back cross slide bar assembly.

Preferably, the dining plate clamping device further comprises a clamping part body, wherein the clamping part body is used for being connected with a dinner plate, and a clamping part which is detachably connected to the side cross sliding rod assembly or the handrail is arranged on the clamping part body.

Preferably, the clamping portion comprises a first clamping groove and a second clamping groove, and the clamping piece body is clamped on the lateral cross sliding rod assembly through the first clamping groove or clamped on the armrest through the second clamping groove.

Preferably, still include handle subassembly, two be equipped with the horizontal pole between the preceding pole setting, handle subassembly with the horizontal pole rotates to be connected, still be equipped with on the horizontal pole and be used for fixing handle subassembly's handle joint spare.

Preferably, the handle assembly comprises: the hinge support is used for being fixed on the cross rod, the bottom end of the pull rod is connected with the hinge shaft, the hinge shaft is hinged to the hinge support, at least one end face of the hinge shaft is a first corrugated face, a second corrugated face matched with the first corrugated face is arranged on the inner side face of the hinge support, and the first corrugated face and the second corrugated face fluctuate along the circumferential direction.

Preferably, preceding pole setting bottom is equipped with gyro wheel locking mechanism, gyro wheel locking mechanism includes wheel carrier, lock car round pin and control assembly, the wheel carrier is used for installing the gyro wheel, the gyro wheel through the round pin axle with the wheel carrier rotates to be connected, one side of gyro wheel is equipped with the slot, lock the car round pin on the wheel carrier, control assembly is used for controlling lock car round pin moves into lock when the slot the gyro wheel, move out unblock when the slot the gyro wheel.

Preferably, a locking piece is fixed on one side of the middle part of the roller, the locking piece is sleeved on the pin shaft, and a plurality of groups of slots extending along the axial direction of the roller are formed in the periphery of the locking piece; the wheel carrier is provided with a sliding groove, the rod body of the locking pin is connected in the sliding groove in a sliding mode, and the outer end of the locking pin is connected with the control assembly.

Preferably, the control assembly comprises a housing, a positioning elastic piece and an elastic piece pressure spring, a limiting piece is arranged on the outer side of the wheel carrier, a brake groove and an unlocking groove are formed in the side portion of the limiting piece, the housing is covered on the limiting piece, an accommodating groove for accommodating the positioning elastic piece is formed in the inner side of the housing, two ends of the elastic piece pressure spring respectively abut against the side wall of the accommodating groove and the side portion of the positioning elastic piece, the housing is fixedly connected with the locking pin, and when the housing moves downwards, the positioning elastic piece extends into the brake groove under the elastic force of the elastic piece pressure spring so as to lock the locking pin in the slot; when the housing moves upwards, the positioning elastic piece extends into the unlocking groove under the action of the elastic force of the elastic piece pressure spring so as to lock the locking pin outside the slot.

Compared with the prior art, the technical scheme has the following advantages:

the utility model provides a shallow, include: the sunshade comprises two front vertical rods, two rear vertical rods and a sunshade, wherein a group of lateral cross sliding rod assemblies are arranged between the front vertical rods and the rear vertical rods which are positioned on the same side; two upper branch ends of the lateral cross sliding rod component are respectively hinged with the upper end of the front vertical rod and the upper end of the rear vertical rod, and two lower branch ends of the lateral cross sliding rod component are respectively connected on the rod body of the front vertical rod and the rod body of the rear vertical rod in a sliding manner; the sunshade, the sunshade can dismantle the upper end of connecting at preceding pole setting and/or the upper end of back pole setting. When the lower branch end of the lateral cross sliding rod component moves upwards to be in contact with the upper end of the upright stanchion, the frame is in a supporting state, and the lower end of the lateral cross sliding rod component can slide up and down along the upright stanchion, so that the length and the width of the frame can be improved to the maximum extent on the premise of ensuring the inconvenient height of the frame, and the volume of the frame is further improved; when the lower branch end of the lateral cross slide bar component moves downwards to be in contact with the lower end of the upright rod, the frame is in a furled state at the moment, and the lower end of the lateral cross slide bar component can slide up and down along the upright rod, so that the furled height of the frame can be reduced, and the purpose of reducing the size is further achieved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a schematic structural view of a cart according to an embodiment of the present invention;

FIG. 2 is a schematic view of the stroller of FIG. 1 in a stowed position with the sunshade removed;

fig. 3 is a schematic structural view of a foldable frame of a stroller in a storage process according to another embodiment of the present invention;

FIG. 4 is a schematic structural view of the foldable frame of FIG. 3 in a stowed position;

FIG. 5 is a front view of the sunshade of FIG. 1;

FIG. 6 is a top plan view of the awning of FIG. 1 in a stowed condition;

fig. 7 is a schematic structural view of a handle assembly of the cart according to an embodiment of the present invention in fig. 1;

FIG. 8 is an exploded view of FIG. 7;

fig. 9 is a schematic view of a dinner plate mounted on a frame and a handrail according to an embodiment of the present invention;

FIG. 10 is a bottom view of the tray connection assembly and tray of FIG. 9;

FIG. 11 is a cross-sectional view of the dining plate connection assembly of FIG. 9;

fig. 12 is a schematic structural view of a roller locking mechanism of a cart according to an embodiment of the present invention;

FIG. 13 is an exploded view of FIG. 12;

FIG. 14 is a front view of the roller of FIG. 12 in a braking condition;

FIG. 15 is a cross-sectional view of the roller of FIG. 12 in a braking condition;

FIG. 16 is a front view of the scroll wheel of FIG. 12 in an unlocked position;

FIG. 17 is a cross-sectional view of the roller of FIG. 12 in an unlocked position;

FIG. 18 is a schematic view of the roller locking mechanism of FIG. 12 with the cover removed;

fig. 19 is an inner side structure view of the housing of fig. 12.

The reference numbers are as follows:

1 is a folding frame, 101 is a front vertical rod, 102 is a rear vertical rod, 103 is a side cross slide rod component, 104 is a lifting rod, 105 is a rear connecting rod, 106 is a second connecting piece, 107 is a sliding sleeve, 108 is a first supporting plate, 109 is a second supporting plate, 110 is a front cross slide rod component, 111 is a rear cross slide rod component, 112 is a connecting rod, 113 is a connecting block, and 114 is a cross rod;

2, a sunshade, 201, 202, 203, 204 and 205 are connected through a connecting piece, a supporting rod, an L-shaped sleeve, a groove and a partition board;

3 is a handle component, 301 is a pull ring, 302 is an upper rod body, 303 is a first rod body, 304 is a second rod body, 305 is a clamping groove, 306 is a handle clamping piece, 307 is a hinged shaft, 308 is a corrugated block, 309 is a hinged base, 310 is an elastic deformation end, 311 is a fixed end;

4, a dinner plate connecting component, 401, 402, an armrest, 403, a connecting shaft, 404, a reversing hole, 405, a protrusion, 406, a guide inclined plane, 407, a clamping hole, 408, a first clamping groove, 409, a second clamping groove, 410, a clamping hook, 411, a weight-reducing groove and 412, are deformation grooves;

5 is a roller locking mechanism, 501 is a roller, 502 is a wheel frame, 503 is a rotating shaft, 504 is a screw, 505 is a pedal, 506 is a bolt, 507 is a pin shaft, 508 is an inserting groove, 509 is an unlocking groove, 510 is a brake groove, 511 is a guide groove, 512 is a housing, 513 is a bolt, 514 is a locking piece, 515 is a sliding groove, 516 is an elastic piece pressure spring, 517 is a positioning elastic piece, 518 is a limiting piece, 519 is an accommodating groove, and 520 is a reinforcing rib plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The embodiment of the utility model provides a shallow please refer to fig. 1 ~ 19, including folding frame, sunshade, handle subassembly, dinner plate coupling assembling and gyro wheel locking mechanism, wherein the connection can be dismantled on folding frame upper portion to the sunshade, and handle subassembly rotates to be connected at folding frame front portion, can fix the dinner plate on folding frame or on the handrail through dinner plate coupling assembling, and folding frame bottom is equipped with the gyro wheel.

Referring to fig. 1 to 6, the foldable frame includes: the two front vertical rods and the two rear vertical rods are positioned on the same side, a group of lateral cross sliding rod assemblies are arranged between the front vertical rods and the rear vertical rods, the two front vertical rods and the two rear vertical rods are respectively connected through rigid connecting pieces and also can be connected through telescopic pieces, and the lateral cross sliding rod assemblies play a role in containing and supporting; two upper branch ends of the lateral cross sliding rod component are respectively hinged with the upper end of the front vertical rod and the upper end of the rear vertical rod, and two lower branch ends of the lateral cross sliding rod component are respectively connected to the rod body of the front vertical rod and the rod body of the rear vertical rod in a sliding manner. When the lower branch end of the lateral cross sliding rod component moves upwards to be in contact with the upper end of the upright stanchion, the frame is in a supporting state, and the lower end of the lateral cross sliding rod component can slide up and down along the upright stanchion, so that the length and the width of the frame can be improved to the maximum extent on the premise of ensuring the inconvenient height of the frame, and the volume of the frame is further improved; when the lower branch end of the lateral cross sliding rod component moves downwards to be in contact with the lower end of the vertical rod, the frame is in a folded state, and the lower end of the lateral cross sliding rod component can slide up and down along the vertical rod, so that the folded height of the frame can be reduced, the purpose of reducing the size is further achieved, and the frame is convenient to carry.

Specifically, two sets of lateral cross slide bar assemblies respectively comprise two sets of X-shaped hinge rods, the X-shaped hinge rods refer to two cross rods with hinged middle parts, and one lateral ends of the two sets of X-shaped hinge rods are hinged with each other. Under the prerequisite of guaranteeing that the frame height is unchangeable, further improve the length and the width of frame through two sets of X type articulated rods to improve the volume of frame.

In order to ensure the firmness of the frame after being stored, one of the two groups of connected X-shaped hinge rods is provided with a connecting plate, and the other group is provided with a fixing part. After accomodating, with the connecting plate fix on the fixed part can, when needs expand, pull down the connecting plate from the fixed part earlier, then expand the frame again. Wherein the detachable connection is preferably made by means of a snap connection.

Furthermore, the section between the two groups of X-shaped hinged rods on the left side and the right side, which is close to the hinged part, is a horizontal bending section, namely after the frame is supported, the horizontal bending section between the two groups of X-shaped hinged rods is in a horizontal state, so that the hinged part is prevented from being protruded to scratch a user. In addition, the section between the two groups of X-shaped hinge rods at the front end and the rear end close to the hinge joint of the X-shaped hinge rods can also be arranged as a horizontal bending section.

In order to facilitate the connection between the X-shaped hinged rods, the X-shaped hinged rods are hinged through a first connecting piece, the first connecting piece comprises two sleeves, the ends of the two sleeves are hinged to each other, and the sleeves are fixed at the ends of the X-shaped hinged rods. Wherein the first connecting element is preferably a plastic part for the purpose of achieving lightness. In addition, the X-shaped hinged rod is hinged through the first connecting piece, so that subsequent maintenance operation is facilitated, the X-shaped hinged rod can be worn at the joint of the X-shaped hinged rod and the X-shaped hinged rod when being folded, the X-shaped hinged rod can be protected through the first connecting piece, and the X-shaped hinged rod does not need to be replaced after being detached for replacement after being worn.

Furthermore, each group of lateral cross sliding rod assemblies further comprises a second connecting piece and a sliding sleeve, wherein the second connecting piece and the sliding sleeve are preferably made of lighter plastic, the X-shaped hinge rod is hinged to the second connecting piece, the X-shaped hinge rod and the sliding sleeve can be hinged through rivets, pins or screws, the second connecting piece is fixed to the upper end of the vertical rod, the second connecting piece can be sleeved on the upper end of the vertical rod, the X-shaped hinge rod is hinged to the sliding sleeve, and the sliding sleeve is connected to the rod body of the vertical rod in a sliding mode.

In order to further reduce the weight of the frame, the front and rear uprights and the lateral cross slide bar assemblies are preferably hollow, i.e. they can be made from hollow tubes.

In addition, a foldable bottom support is included, the end of the bottom support is hinged with the bottom of the upright, wherein the bottom support can be folded along with the folding of the side cross slide bar assembly and unfolded along with the unfolding of the side cross slide bar assembly.

Specifically, two preceding poles are connected through the preceding connecting rod, and two back poles are connected through the back connecting rod, and bottom support piece includes first backup pad and second backup pad, and one side of first backup pad and one side of second backup pad are articulated, and the opposite side of first backup pad is articulated with the pole setting before being located, and the opposite side of second backup pad is articulated with the back pole setting. When the support plate is folded, the hinged part between the first support plate and the second support plate moves upwards until the two support plates are close to each other; when the support is carried out, the hinged part between the first support plate and the second support plate can move downwards until the two support plates are in a horizontal state.

It should be noted that, the first support plate and the second support plate may be a monolithic plate-shaped structure, and in addition, in order to reduce weight, on the premise of satisfying the support strength, lightening holes may be formed in the plate-shaped structure, or may be formed by a plurality of support rods arranged in parallel, which may be specifically selected according to actual conditions.

In addition, two preceding pole settings accessible cross slide bar assembly connect before, two back pole settings accessible cross slide bar assembly connect, wherein preceding cross slide bar assembly and back pole setting cross slide bar assembly are the same with lateral part cross slide bar assembly's theory of operation, specifically refer to above-mentioned lateral part cross slide bar assembly can, bottom support piece includes four connecting rods and the connecting block that is located the middle part, be equipped with articulated portion around the connecting block, the one end of four connecting rods is articulated with the connecting block, the other end is articulated with the bottom of four pole settings respectively. When the connecting block is folded, the four connecting rods are forced upwards, so that the connecting block moves upwards until the four connecting rods are in a vertical state; when the support is carried out, the four connecting rods are subjected to downward force, so that the connecting blocks move downwards until the four connecting rods are positioned in the same horizontal plane.

When the bottom support is in a rod-shaped structure, the frame is folded to be in a bundle shape; when the bottom supporting piece is of a plate-shaped structure, the frame is in a cuboid structure after being folded.

To the sunshade, its upper end of connecting in preceding pole setting and/or back pole setting can be dismantled, the sunshade includes: connecting piece and many spinal branchs vaulting pole, the periphery side of connecting piece is equipped with the recess, and the one end of many spinal branchs vaulting pole articulates in the recess, and the one end of bracing piece can be around connecting piece circumference rotation in the recess promptly, the other end of many spinal branchs vaulting pole be used for with connected to the frame, wherein the radical of bracing piece is preferred four, and four spinal branchs vaulting poles are the X type and articulate. When the sunshade is used, the supporting rods are unfolded in a mode of expanding included angles, then the tail ends of the supporting rods are installed at the upper ends of the front vertical rod and the rear vertical rod, in order to facilitate the connection of the supporting rods, lifting rods are axially inserted in the front vertical rod and the rear vertical rod, when the sunshade is disassembled, the lifting rods can be retracted into the front vertical rod and the rear vertical rod, when the sunshade needs to be supported, the lifting rods are drawn out, and after the sunshade is unfolded, the supporting rods are limited by the upper portion and the lower portion of the groove, so that the supporting strength of the supporting rods can be improved, and the strength of the sunshade is further ensured; in the formula of accomodating, it is rotatory with the mode that the contained angle reduces with each bracing piece, finally with each bracing piece rotation to same one side, can accomplish and accomodate, consequently expand and accomodate comparatively convenient. In addition, different supporting shapes can be realized by changing the included angle between the supporting rods, and the applicability of the sunshade is further improved.

It should be noted that the sunshade should be covered with a shielding material, such as a cloth or a baffle, when in use.

Furthermore, the groove is an arch-shaped groove with the middle part protruding upwards and two ends inclining downwards. For example, the groove of the inverted V-shaped structure, when the supporting rod is unfolded, the supporting rod forms a pyramid structure, thereby improving the supporting strength of the sunshade. Of course, in the case of low strength requirements, the groove may also be selected to be horizontally configured, i.e. the support bar is located in the same plane after the support bar is unfolded.

In order to be further convenient for accomodate and expand, the middle part of recess is equipped with the baffle, and it has many spinal branchs vaulting pole to articulate respectively in the space of baffle both sides, can prevent the bracing piece of both sides influence each other when expanding through the baffle, when accomodating, rotates each bracing piece towards the direction of baffle, finally makes the orientation of each bracing piece the same with the orientation of baffle.

The connecting piece is an arch-shaped piece with the middle part protruding upwards, namely the connecting piece is in an arch structure viewed from the side viewing direction, an arch-shaped groove can be conveniently formed in the connecting piece through the connecting piece in the arch structure, and the supporting strength of the connecting piece is improved.

Particularly, the connecting piece is preferably a waist-shaped piece, the groove is formed in the convex arc side of the waist-shaped piece, namely the connecting piece is of a waist-shaped structure in the top view direction, the included angle of the concave side of the waist-shaped piece is the limit value of the included angle of the outer supporting rod, and through the waist-shaped piece, the redundant structure of the connecting piece is reduced, and the purpose of light weight is achieved. Of course, the connecting piece can also be a round, oval, polygonal or other special-shaped structure, and can be specifically selected according to actual requirements.

Furthermore, the bracing piece is the telescopic link, and the support area of sunshade can be changed through the flexible of bracing piece, and then improves the adaptability of sunshade to different frames.

In this embodiment, still include fixed cover, the one end cover of fixed cover is established in the one end of bracing piece, and the other end of fixed cover passes through the articulated shaft and articulates at the recess. Wherein the preferred working of plastics of fixed cover, after fixed cover wearing and tearing, pull down alone with it and change can, need not to change whole root bracing piece or connecting piece, consequently reduced use cost.

In order to fix the sunshade on the frame, in this embodiment, the sunshade further comprises an L-shaped sleeve, one end of the L-shaped sleeve is sleeved on the supporting rod, and the other end of the L-shaped sleeve is used for being sleeved on the vertical rod of the frame. Wherein the working of plastics is also preferred to L type sleeve, through cover tubular connection structure in addition, can improve the dismouting efficiency of sunshade, and then the user of being convenient for uses.

As for the handle assembly, please refer to fig. 7 and 8, which specifically includes: the hinge support is fixed on the frame, preferably fixed on a cross bar at the bottom of the frame, the bottom end of the pull rod is connected with the hinge shaft, for example, a mounting hole can be formed in the hinge shaft, the bottom end of the pull rod is fixed in the mounting hole, the hinge shaft is hinged to the hinge support, namely, the hinge shaft can rotate relative to the hinge support, at least one end face of the hinge shaft is a first corrugated face, a second corrugated face matched with the first corrugated face is arranged on the inner side face of the hinge support, and the first corrugated face and the second corrugated face undulate along the circumferential direction. The concave-convex matching relation between the first corrugated surface and the second corrugated surface is to satisfy that the hinged shaft can rotate relative to the hinged support under the action of certain external force. For example, the wave crests and the wave troughs of the first corrugated surface and the second corrugated surface are in smooth transition, or at least one of the first corrugated surface and the second corrugated surface is in a deformable structure, for example, the hinge shaft or/and the hinge base is a plastic part, when torque is applied to the pull rod, the first corrugated surface and the second corrugated surface can deform to overcome the clamping relation of the first corrugated surface and the second corrugated surface, after the pull rod rotates to a required angle, the torque is stopped to be applied, and at the moment, the first corrugated surface and the second corrugated surface are clamped tightly, so that the pull rod can be locked at the required angle. Therefore, the angle adjustment and locking of the pull rod only need to rotate the pull rod, and the operation is more convenient. In addition, when the pull rod is not used, the pull rod can be rotated to be in a vertical state.

Specifically, the hinged support comprises a base and two corrugated blocks, wherein the base is fixed on the frame and can be fixed through a fastener bolt or a rivet, the two corrugated blocks are coaxially fixed on the base, an articulated shaft is articulated between the two corrugated blocks, and the opposite inner side surfaces of the two corrugated blocks are provided with first corrugated surfaces. Wherein, a coaxial connection relation among the base, the corrugated block and the hinge shaft can be realized by a fixed shaft penetrating through the base, the corrugated block and the hinge shaft.

The base is preferably a U-shaped seat, the corrugated block and the hinge shaft are arranged on the inner side face of the U-shaped seat, and the bottom of the U-shaped seat is fixed on the outer side of the cross bar of the rack. In addition, two support lugs can be selected to be fixed on the frame as long as the effect of fixing the corrugated block can be achieved.

Further, still be equipped with handle joint spare on the frame, the pull rod can be dismantled with handle joint spare and be connected. When not using the pull rod, can be with the pull rod joint on handle joint spare to improve the stability that the pull rod was accomodate.

Specifically, the pull rod includes the first body of rod and the second body of rod of two mutual parallel arrangement, the lower extreme and the articulated shaft fixed connection of the first body of rod and the second body of rod, and the clearance between the first body of rod and the second body of rod forms the joint groove. When in use, the pull rod can be clamped on the clamping piece through a gap between the first rod body and the second rod body; when the pull rod needs to be used, the pull rod is rotated, and the clamping relation between the pull rod and the clamping piece can be released.

Wherein, handle joint spare includes stiff end and elastic deformation end, and the stiff end is fixed on the frame, and wherein the deformation direction of elastic deformation end is the direction that is parallel to each other with the axis direction of articulated shaft, and when the inboard that first body of rod and second body of rod are relative and elastic deformation end contact, the both ends of elastic deformation end support tightly between the first body of rod and second body of rod under the effect of elastic force. The elastic deformation end can be an elastic part with an open slot in the middle, and when the elastic part is extruded by the first rod body and the second rod body, the open slots of the elastic part are mutually closed and apply elasticity to the first rod body and the second rod body.

In order to facilitate the joint of the pull rod and the handle joint piece, the two sides of the elastic deformation end are provided with guide inclined planes, and the abrasion between the rod body and the handle joint piece can be reduced through the guide inclined planes. The medial surface of the first body of rod and the second body of rod is earlier than the direction inclined plane contact promptly, and along with the first body of rod and the second body of rod continue upwards to rotate, can the joint in the joint region of elastic deformation end.

The fixed end is preferably a channel-shaped part clamped on a cross rod of the frame, the channel-shaped part is preferably clamped on the inner side of the middle part of the cross rod, the U-shaped seat is fixed on the outer side of the middle part of the cross rod, and the channel-shaped part is arranged behind the clamp and can be further reinforced through a fastening piece.

In order to facilitate the pulling of a user, the pull rod further comprises an upper rod body and a pull ring, the upper end of the upper rod body is connected with the pull ring, the lower end of the upper rod body is connected with the first rod body and the second rod body, a connecting block can be arranged at the lower end of the upper rod body, and the connecting block is connected with the upper ends of the first rod body and the second rod body. Go up the body of rod and the preferred hollow tube of first body of rod and second body of rod, under the prerequisite of guaranteeing intensity, play the purpose of matter light, the pull rod can also be the axial extensible member moreover, can adjust its length as required. In addition, the pull ring can be rotatably connected to the upper end of the upper rod body, so that a user can conveniently adjust the holding angle of the pull ring according to the own requirements.

It should be noted that, it is preferable to provide two rod bodies in the above embodiment, three or more rod bodies may be selected, a slot is formed in a gap between adjacent rod bodies, and the clamping member is provided with a corresponding number of clamping portions. Certainly also can set up a body of rod, should have the draw-in groove on the joint spare this moment, the body of rod joint in the draw-in groove can.

Referring to fig. 9-11, a tray can be mounted on the side cross-bar assemblies or on the arm rests by a tray connection assembly comprising: the clamping piece body is used for being connected with the dinner plate, the clamping piece body can be fixedly connected with the dinner plate or can be detachably connected with the dinner plate, and the clamping piece body is provided with a clamping portion which is used for being detachably connected to a frame of the trolley or a handrail. The frame upper portion of shallow is equipped with two sets of railings that set up parallel to each other usually, and the handrail is U type pole usually, and the branch end of U type pole is connected respectively in the one end of two sets of railings with one side. Based on the cart with the structure, the left side and the right side of the bottom of the dinner plate can be respectively connected with the clamping piece bodies, so that the dinner plate can be bridged on the handrails or the handrails on the left side and the right side through the clamping piece bodies. When the dinner plate is used, the dinner plate can be bridged on the frame; when the dining plate is stored or not needed, the dining plate can be clamped on the handrail, so that the trolley can be stored or used for other purposes.

Specifically, joint portion includes first draw-in groove and second draw-in groove, and the fastener body passes through first draw-in groove joint on the frame, or the fastener body passes through second draw-in groove joint on the handrail, through setting up first draw-in groove and second draw-in groove on the fastener body, is applicable to the different condition of body of rod structure of frame and handrail. In addition, when the rod body of the frame and the rod body of the handrail are close to each other, a clamping groove can be arranged on the clamping portion and can be clamped on the frame or the handrail.

The first clamping groove and the second clamping groove are arranged in parallel, and are preferably arranged at the bottom of the clamping piece body. The second clamping groove is preferably arranged on the inner side of the first clamping groove, and when the clamping piece is installed, the clamping piece body is clamped on the frame or the handrail from top to bottom.

Furthermore, a clamping hole is formed in the outer side wall of the first clamping groove, and the clamping piece body is used for being fixed on the frame through the fastening piece extending into the clamping hole. Wherein the card hole can be through-hole or blind hole, and when being the blind hole, the opening direction is towards the inboard of first draw-in groove. For the frame includes two folding rods hinged through the connecting shaft 403, when the frame is installed, the clamping piece body is clamped at the hinged position of the folding rods, the clamping hole can be clamped on the boss extending outwards from the connecting shaft, namely, the connecting shaft plays a role in connecting the folding rods, and also plays a role in fixing the clamping piece body, so that the purpose of multiple purposes of one object is achieved, and the use of parts is saved.

In order to facilitate the installation of the dinner plate, the tail end of the outer side wall of the first clamping groove is provided with a guide inclined plane which is turned outwards. Wherein the guide inclined plane plays a role in guiding the first clamping groove to be clamped on the frame. In addition, when the dinner plate is detached, a user can conveniently turn over the guide inclined plane outwards, so that the dinner plate can be easily detached from the frame.

Wherein, the inner side of the section between the tail end of the outer side wall of the first clamping groove and the guide inclined plane is provided with a bulge. The bulges play a role in preventing the dinner plate from sliding out of the frame, and in addition, the inner side surfaces of the sections are provided with two bulges positioned in the same horizontal plane, and the distance between the two bulges is not less than the outer diameter of the articulated shaft, so that when the connection is carried out, the gap between the two bulges can play a role in yielding the articulated shaft, and the connection between the clamping hole and the articulated shaft is smooth. The preferred triangle-shaped arch of arch in addition to the dismouting of fastener body is convenient for.

In order to facilitate the disassembly and assembly of the clamping piece body, a deformation groove is arranged on the middle side wall between the first clamping groove and the second clamping groove, and the deformation groove is opposite to the grooving direction of the first clamping groove and the grooving direction of the second clamping groove. The upper portion of the clamping piece body can be provided with the weight reducing groove, the bottom of the weight reducing groove is provided with the deformation groove, the weight reducing groove plays a role in reducing the weight of the clamping piece body, and the clamping piece body can be conveniently and smoothly deformed in clamping connection, so that the clamping firmness is improved.

Further, the upper portion of fastener body passes through the bottom joint of buckle and dinner plate, can set up the back-off hole on the lateral wall of recess for example, and the dinner plate bottom sets up the pothook, when the equipment, can realize being connected both with the buckle joint on the back-off hole.

As for the roller locking mechanism, please refer to fig. 12 to 19, which specifically includes: the wheel carrier is used for installing the idler wheel, the idler wheel is rotatably connected with the wheel carrier through a pin shaft, a rotating shaft can be vertically arranged on the upper portion of the wheel carrier and is hinged to the bottom of the frame, the idler wheel can be used as a universal wheel at the moment, a fork arm type structure is preferably selected for the wheel carrier, the idler wheel is installed on the inner side of a fork arm, a slot is formed in one side of the idler wheel, and the wheel carrier is provided with a locking pin. When the slot is an open slot distributed along the circumferential direction, the locking pin can move in and out of the slot in an axial or radial movement mode; when the slot is along the jack, the locking pin can only move into or out of the slot in an axial moving mode. Wherein a control assembly controlling the radial direction movement of the locking pin is preferred.

When the brake is needed, the control assembly controls the locking pin to move into the slot, and the roller is static relative to the wheel frame at the moment, namely the roller is locked; when the wheel frame needs to be unlocked, the control assembly controls the locking pin to move out of the slot, so that the limitation of the locking pin on the wheel is eliminated, the wheel can rotate relative to the wheel frame, and the wheel is in an unlocking state at the moment. Through the gyro wheel locking mechanism that this embodiment provided, when the gyro wheel was locked, no matter corotation or reversal, the locking state of gyro wheel all can not destroyed, only when control assembly will lock the car round pin and shift out the slot, just can carry out the unblock to the gyro wheel, has consequently improved the brake stability of gyro wheel.

Specifically, one side at the gyro wheel middle part is fixed with the locking piece, and the locking piece cover is established at the round pin epaxially, and the gyro wheel can be established in the outside of locking piece one end, and the periphery of locking piece is equipped with along the multiunit slot that gyro wheel axial direction extends, and similar to the spline groove, the periphery of the one end that locking piece stretches out the gyro wheel all is equipped with the slot promptly.

In order to facilitate the sliding of the locking pin, the wheel carrier is provided with a sliding groove, the rod body of the locking pin is connected in the sliding groove in a sliding mode, the outer end of the locking pin is connected with the control assembly, when the locking pin is in an unlocking state, the inner end of the locking pin is located on the upper portion of the inserting groove, and when the brake is needed, the control assembly controls the brake pin to move downwards so as to be clamped in the inserting groove.

Specifically, the control assembly includes housing, location bullet spare, bullet spare pressure spring, and the outside of wheel carrier is equipped with the locating part, and the lateral part of locating part is equipped with brake groove and unblock groove, and brake groove and unblock groove form dentate structure, and when the locking round pin was located the locking piece top, the unblock groove was located the brake groove top, and when the locking round pin was located the locking piece below in addition, the unblock groove was located the brake groove below, and wherein the locking round pin can include two parts: bolt and bolt, bolt one end are equipped with the screw hole, and the bolt setting is inboard at the housing, and the bolt stretches into the housing from the housing outside inside and bolt threaded connection to the dismouting and the maintenance of lock car round pin are convenient for. The housing covers the locating part, the inner side of the housing is in contact with the wheel carrier, the inner side of the housing is provided with a containing groove used for containing the locating elastic piece, one side of the containing groove corresponding to the brake groove and the unlocking groove is provided with an opening, two ends of the elastic piece pressure spring are respectively abutted against the side wall of the containing groove and the side part of the locating elastic piece, and the housing is fixedly connected with the locking pin so that the locking pin moves along with the movement of the housing.

The locking pin is positioned above the locking piece for explanation, when the cover shell moves downwards, the positioning elastic piece extends into the brake groove under the action of the elastic force of the elastic piece pressure spring so as to lock the brake pin in the slot; when the housing moves upwards, the positioning elastic piece extends into the unlocking groove under the action of the elastic force of the elastic piece pressure spring so as to lock the vehicle locking pin outside the slot.

In order to facilitate the smooth clamping of the positioning elastic piece into the brake groove or the unlocking groove, the tail end of the positioning elastic piece is provided with a V-shaped guide inclined plane, and correspondingly, the brake groove and the unlocking groove can be also set to be of a V-shaped groove structure so as to improve the clamping stability of the positioning elastic piece with the brake groove and the unlocking groove. In addition, a blind hole can be formed in the other end of the positioning elastic piece, and one end of the elastic piece pressure spring can extend into the blind hole, so that the connection stability of the elastic piece pressure spring and the positioning elastic piece is improved.

Furthermore, a guide rod is arranged on the wheel carrier, and a guide groove in sliding connection with the guide rod is arranged on the housing. Through guide arm and guide way, can guarantee that the housing reciprocates the accuracy. The guide rod can be a rod piece detachably connected to the side portion of the wheel frame, and when the guide rod is worn, the guide rod can be detached for replacement.

Furthermore, the tail end of the guide rod is provided with the anti-falling part, the outer diameter of the anti-falling part is larger than the groove width of the guide groove, the shell can be guaranteed to fall off from the guide rod through the anti-falling part, and the stability of the shell in the up-and-down movement mode is further improved. For example, a screw may be screwed into the end of the guide rod, the head of the screw having an outer diameter greater than the width of the slot. In addition, the outer diameter of the guide rod extending out of the outer side of the housing can be enlarged, and when the guide rod is installed, the guide rod extends into the wheel carrier from the outer side of the housing and is fixed on the wheel carrier.

In order to facilitate the user to control the movement of the housing, the housing is provided with a pedal on the outer side, and the pedal is preferably arranged perpendicular to the housing. When the pedal is stepped on, braking can be carried out; when the pedal is lifted, unlocking can be achieved.

Furthermore, the inner side of the housing is provided with reinforcing rib plates, so that the strength of the housing can be improved through the reinforcing rib plates, and the service life of the housing is further prolonged.

The embodiment of the utility model provides a shallow is still provided, including the frame, still include the gyro wheel locking mechanism that any one of above-mentioned embodiment provided, gyro wheel locking mechanism sets up in the frame bottom, the beneficial effect of shallow refer to above-mentioned gyro wheel locking mechanism can, here is no longer repeated.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

It is right above that the utility model provides a shallow introduces in detail. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims (10)

1. A cart, comprising:

the two front vertical rods and the two rear vertical rods are positioned on the same side, and a group of lateral cross sliding rod assemblies are arranged between the front vertical rods and the rear vertical rods; two upper branch ends of the lateral cross sliding rod component are respectively hinged with the upper end of the front vertical rod and the upper end of the rear vertical rod, and two lower branch ends of the lateral cross sliding rod component are respectively connected to the rod body of the front vertical rod and the rod body of the rear vertical rod in a sliding manner;

the sunshade is detachably connected to the upper end of the front upright rod and/or the upper end of the rear upright rod.

2. The cart of claim 1, wherein the sunshade comprises a connecting member and a plurality of support rods, a groove is formed on the outer periphery of the connecting member, one end of each of the plurality of support rods is hinged to the groove, the groove is used for allowing the plurality of support rods to rotate around the connecting member in the circumferential direction, and the other end of each of the plurality of support rods is detachably connected to the upper end of the front vertical rod and/or the upper end of the rear vertical rod.

3. The cart of claim 1, further comprising a foldable bottom support, wherein the bottom support comprises four connecting rods and a connecting block located in the middle, one end of each of the four connecting rods is hinged to the connecting block, the other end of each of the four connecting rods is hinged to the bottom of each of the front vertical rod and the rear vertical rod, the two front vertical rods are connected through a front cross slide rod assembly, and the two rear vertical rods are connected through a rear cross slide rod assembly.

4. The cart of claim 1, further comprising a latch body for connection to a tray, the latch body having a latch portion for detachable connection to the side cross slide bar assembly or to a handle.

5. The cart of claim 4, wherein the engaging portion comprises a first engaging groove and a second engaging groove, and the clip body is engaged with the side cross slide bar assembly through the first engaging groove or engaged with the armrest through the second engaging groove.

6. The cart of claim 1, further comprising a handle assembly, wherein a cross bar is disposed between the two front vertical rods, the handle assembly is rotatably connected to the cross bar, and a handle clamping member for fixing the handle assembly is further disposed on the cross bar.

7. The cart of claim 6, wherein the handle assembly comprises: the hinge support is used for being fixed on the cross rod, the bottom end of the pull rod is connected with the hinge shaft, the hinge shaft is hinged to the hinge support, at least one end face of the hinge shaft is a first corrugated face, a second corrugated face matched with the first corrugated face is arranged on the inner side face of the hinge support, and the first corrugated face and the second corrugated face fluctuate along the circumferential direction.

8. The cart according to claim 1, wherein a roller locking mechanism is disposed at a bottom of the front vertical rod, the roller locking mechanism includes a wheel frame, a locking pin and a control component, the wheel frame is used for mounting a roller, the roller is rotatably connected with the wheel frame through a pin shaft, a slot is disposed at one side of the roller, the locking pin is disposed on the wheel frame, and the control component is used for controlling the locking pin to lock the roller when moving into the slot and unlock the roller when moving out of the slot.

9. The cart of claim 8, wherein a locking member is fixed to one side of the middle portion of the roller, the locking member is sleeved on the pin shaft, and a plurality of groups of slots extending in the axial direction of the roller are formed in the periphery of the locking member; the wheel carrier is provided with a sliding groove, the rod body of the locking pin is connected in the sliding groove in a sliding mode, and the outer end of the locking pin is connected with the control assembly.

10. The cart of claim 9, wherein the control assembly comprises a housing, a positioning elastic member and an elastic member pressure spring, a limiting member is arranged on the outer side of the wheel carrier, a brake groove and an unlocking groove are formed in the side portion of the limiting member, the housing is covered on the limiting member, an accommodating groove for accommodating the positioning elastic member is formed in the inner side of the housing, two ends of the elastic member pressure spring are respectively abutted against the side wall of the accommodating groove and the side portion of the positioning elastic member, the housing is fixedly connected with the locking pin, and when the housing moves downwards, the positioning elastic member extends into the brake groove under the elastic force of the elastic member pressure spring so as to lock the locking pin inside the slot; when the housing moves upwards, the positioning elastic piece extends into the unlocking groove under the action of the elastic force of the elastic piece pressure spring so as to lock the locking pin outside the slot.

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