Bearing device and using method thereof, logistics trolley and workbench

Abstract

The invention relates to a bearing device and a using method thereof, a logistics trolley and a workbench, the logistics trolley and the workbench both comprise the bearing device, the bearing device comprises a body, a supporting mechanism and a locking mechanism, the supporting mechanism is installed at the bottom of the body and comprises a connecting shaft and a supporting piece arranged on the connecting shaft, and the locking mechanism is installed on the supporting mechanism. The connecting shaft and the supporting piece can rotate around the central axis of the connecting shaft together so that the supporting piece can be located at the working position or the containing position. The locking mechanism comprises a locking assembly and an operation assembly connected to the locking assembly, the locking piece has a locking state and an unlocking state, the operation assembly can control the locking assembly to move so that the locking assembly can be in the unlocking state, and when the supporting piece is located at the working position and the locking assembly is in the locking state, the connecting shaft is fixed. The supporting piece is fixed to the working position, so that when the bearing device is applied to a logistics trolley or a workbench, operation is greatly simplified, and then the use experience of a user is improved.

Description

Technical Field

[0001] The present application relates to the technical field of article carrying, and in particular to a carrying device and a method for using the same, a logistics trolley, and a workbench. Background Art

[0002] Carrying devices are mostly used in scenes where goods need to be stored and transported, such as shopping malls, supermarkets, and factory workshops. Currently, carrying devices on the market generally include a body for carrying goods and a support mechanism installed at the bottom of the body.

[0003] To facilitate storage and portability, the support mechanism can typically be positioned in a storage position, folded within the body, or in a working position, unfolded and exposed outside the body. When the support mechanism is folded within the body, the device becomes a flat, planar structure, making it easier to store. When the support mechanism is unfolded and exposed outside the body, it supports the body. However, the support mechanism of existing devices is cumbersome to operate, both when folding and unfolding, making it inconvenient for users to use. Summary of the Invention

[0004] In view of this, it is necessary to provide a carrying device and its use method, a logistics trolley and a workbench including the carrying device that can solve the problem that the support mechanism of the existing carrying device is cumbersome to operate when folding or unfolding.

[0005] The present application provides a carrying device, comprising: a body;

[0006] A support mechanism is mounted on the bottom of the body, the support mechanism comprising a connecting shaft and a plurality of supporting members arranged on the connecting shaft, the connecting shaft can drive the supporting members to rotate together around the central axis of the connecting shaft so that the supporting members are located in a working position or a storage position;

[0007] A locking mechanism, comprising a locking assembly and an operating assembly connected to the locking assembly, wherein the locking assembly has a locked state and an unlocked state, and the operating assembly can control the movement of the locking assembly to put the locking assembly in the unlocked state;

[0008] When the support member is located at the working position and the locking assembly is in the locked state, the coupling is fixed.

[0009] Furthermore, the locking assembly is arranged corresponding to the support member, and the locking assembly includes a locking pin; when the locking pin interferes with the support member, the locking assembly is in a locked state, and when the locking pin is disengaged from the support member, the locking assembly is in an unlocked state.

[0010] Furthermore, the locking assembly further includes a first elastic element, and the locking assembly is automatically maintained in the locked state under the action of the first elastic element.

[0011] Furthermore, the operating assembly includes a plurality of pull ropes and an operating handle connected to the pull ropes, one end of each pull rope is connected to a corresponding locking pin, and the other end is connected to the operating handle.

[0012] Furthermore, the supporting device also includes a driving mechanism, which includes a driving assembly and a steering assembly, and the supporting mechanism includes two relatively arranged connecting shafts; the driving assembly is connected to the connecting shaft through the steering assembly, and can drive the two connecting shafts to rotate in opposite directions.

[0013] Furthermore, the driving assembly includes a driving handle, which can control the support member to be located in the working position or the storage position; the operating assembly also includes an operating handle, which can control the locking assembly to switch from the locked state to the unlocked state; the driving handle and the operating handle can be operated simultaneously to control the support member and the locking assembly.

[0014] Furthermore, the driving handle and the operating handle can both rotate around the same rotation axis.

[0015] Furthermore, the driving handle and the operating handle may be integrally formed.

[0016] Furthermore, the operating handle is arranged close to the driving handle so that the driving handle and the operating handle can be operated simultaneously with one hand.

[0017] Furthermore, when the driving handle controls the support member to be located in the storage position or the working position, the locking assembly is in the locked state; when the driving handle controls the support member to switch between the working position and the storage position, the locking assembly is in the unlocked state.

[0018] Furthermore, the operating assembly also includes a second elastic element provided on the driving handle, and the operating handle is elastically connected to the driving handle via the second elastic element; when the operating handle is close to the driving handle, the locking assembly is in the unlocked state.

[0019] Furthermore, a placement groove is provided on the main body, and when the support member is located at the working position or the storage position, the operating handle is confined in the placement groove and the operating handle and the driving handle are fixed synchronously.

[0020] Furthermore, the driving assembly further comprises a driving rod, which is rotatable around its own central axis and connected to the two connecting shafts through the steering assembly, and the driving handle is arranged on the driving rod.

[0021] Furthermore, the steering assembly includes a first transmission gear sleeved on the connecting shaft and a second transmission gear sleeved on the driving rod, the first transmission gear and the second transmission gear are engaged with each other for transmission, and the central axis of the driving rod is perpendicular to the central axis of the connecting shaft.

[0022] Furthermore, a lock buckle is provided on the bearing surface of the main body, and the lock buckle can be locked with an object placed on the bearing surface.

[0023] The present application provides a method for using a carrying device, the method comprising:

[0024] Control the operating handle to put the locking assembly in an unlocked state, hold the operating handle and the driving handle simultaneously with one hand, and the support member is in the storage position;

[0025] controlling the operating handle and the driving handle to rotate around the central axis of the driving rod until the operating handle and the driving handle rotate from the second position to the first position;

[0026] The operating handle is limited in the placement groove under the action of the second elastic element and drives the driving handle to be fixed, and the locking assembly is in a locked state and the support member is in a working position.

[0027] The above-mentioned carrying device and its use method form a supporting mechanism by arranging several supporting members on a connecting shaft, so that the supporting member can be located in a working position or a storage position by rotating the connecting shaft around its own central axis, and a locking mechanism is formed by arranging a locking component and an operating component connected to the locking component, so that the operating component can control the locking component to be in an unlocked state. In this way, when the support member is in the working position, the locking component is in a locked state to limit the movement of the connecting shaft, so that the support member is fixed in the working position, thereby greatly simplifying the operation when the carrying device is used on a logistics cart or a workbench, thereby improving the user experience.

[0028] The present application provides a logistics trolley, which includes a load-bearing device as described in any one of the above items, and the load-bearing device also includes a plurality of rollers installed on the support member.

[0029] The present application provides a workbench, which includes a carrying device as described in any one of the above items, and the carrying device also includes a plurality of supporting legs installed on the support member. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A three-dimensional logistic vehicle provided in one embodiment of the present application Figure 1 .

[0031] Figure 2 A three-dimensional logistic vehicle provided in one embodiment of the present application Figure 2 .

[0032] Figure 3 This is a schematic diagram of a supporting member of a carrying device provided in an embodiment of the present application when it is in a storage position.

[0033] Figure 4 A schematic diagram of a locking mechanism and a driving mechanism provided in one embodiment of the present application.

[0034] Figure 5 A partial structural diagram of a locking mechanism provided in one embodiment of the present application.

[0035] Figure 6 This is a partial structural exploded diagram of the locking mechanism provided in one embodiment of the present application.

[0036] Figure 7 This is a schematic diagram of a supporting member of a carrying device provided in an embodiment of the present application when it is in a working position.

[0037] Figure 8 This is an enlarged schematic diagram of the supporting member of the carrying device provided in one embodiment of the present application when it is in the storage position.

[0038] Figure 9 A schematic diagram of the partial structure of the drive assembly and operating assembly provided in one embodiment of the present application.

[0039] Figure 10 A schematic diagram of a portion of the structure of a locking mechanism in a carrying device provided in one embodiment of the present application.

[0040] Figure 11 for Figure 10 Explosion diagram.

[0041] Figure 12 for Figure 4 A magnified schematic diagram of area A in the middle.

[0042] Figure 13 for Figure 4 Schematic diagram of the enlarged area B.

[0043] Figure 14 for Figure 2 Schematic diagram of the enlarged area C in the middle.

[0044] Figure 15 for Figure 3 Schematic enlargement of region D in the middle.

[0045] Figure 16 This is a schematic diagram of a logistics trolley provided in an embodiment of the present application when the push rod is in a folded state.

[0046] Figure 17 This is a schematic diagram of a logistics trolley provided in an embodiment of the present application when the push rod is in an expanded state.

[0047] Figure 18 for Figure 17 Schematic diagram of the enlarged area E in the middle.

[0048] Figure 19 for Figure 16 Schematic diagram of the magnified area in middle F.

[0049] Figure 20 The three-dimensional working platform provided in one embodiment of the present application Figure 1 .

[0050] Figure 21 The three-dimensional working platform provided in one embodiment of the present application Figure 2 . DETAILED DESCRIPTION

[0051] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0052] The present application provides a load-bearing device and a method for using the same, as well as a logistics cart and a workbench. The load-bearing device includes a support mechanism. When the support mechanism is folded, the load-bearing device presents a flat structure for easy storage. When the support mechanism is unfolded, the load-bearing device can be used to carry goods. The load-bearing device can be used in a logistics cart or a workbench. When the load-bearing device is used in a logistics cart, the cart can quickly move goods. When the load-bearing device is used in a workbench, the workbench can store goods at a higher position.

[0053] The following uses the load-bearing device applied to a logistics cart as an example to illustrate the structure of the load-bearing device provided in this application and the method of using the load-bearing device.

[0054] like Figure 1 As shown, the carrying device 100 includes a main body 110 and a supporting mechanism 120 arranged at the bottom of the main body 110, wherein the top of the main body 110 has a carrying surface 111, and the carrying surface 111 is used to carry goods; the supporting mechanism 120 is used to increase the height of the main body 110 from the ground to support the main body 110.

[0055] like Figure 2 and Figure 3 As shown, the support mechanism 120 includes a connecting shaft 121, a plurality of supporting members 122 and a plurality of rollers 123. The central axis of the connecting shaft 121 extends along the X direction in the figure, and the plurality of supporting members 122 are spaced apart on the connecting shaft 121 along the X direction. The number of rollers 123 corresponds to the number of supporting members 122. One roller 200 is installed on a corresponding supporting member 122, so as to facilitate the rapid movement of the vehicle body on the ground, so that the operator can pull the logistics trolley 10 more easily and save the operator's physical strength. The connecting shaft 121 can drive the supporting members 122 to rotate around the central axis of the connecting shaft 121 under the action of an external force, so that the supporting members 122 are located in the working position or the storage position. At the same time, the supporting members 122 drive the rollers 123 to rotate together. Figure 2 As shown, when the support member 122 is in the working position, the roller 123 is at least partially exposed on the bottom surface of the body 110 to support the body 110; Figure 3 As shown, when the support member 122 is in the storage position, the rollers 123 and the support member 122 are folded flat relative to the body 110, making the carrier 100 flat and convenient for storage or carrying. Furthermore, the bottom of the body 110 may be provided with a storage slot that matches the contour of the support mechanism 120. After folding, the support mechanism 120 can be completely stored within the vehicle body. This makes the volume of the carrier 100 smaller after the support mechanism 120 is folded, making the carrier 100 easier to store and carry.

[0056] Further, combined with Figure 4 As shown, the supporting device 100 further includes a locking mechanism 130 and a driving mechanism 140. The driving mechanism 140 is connected to the connecting shaft 121 and is used to control the rotation of the connecting shaft 121, thereby controlling the position of the support member 122 in the working position or the storage position. The locking assembly 131 of the locking mechanism 130 has a locked state and an unlocked state. When the support member 122 of the supporting mechanism 120 is in the working position and the locking assembly 131 is in the locked state, the connecting shaft 121 is fixed and cannot rotate. When the support member 122 of the supporting mechanism 120 switches between the working position and the storage position, the locking assembly 131 is in the unlocked state, allowing the connecting shaft 121 to rotate freely. Furthermore, in this embodiment, when the support member 122 of the supporting mechanism 120 is in the storage position, the locking assembly 131 is also in the locked state, fixing the connecting shaft 121, thereby facilitating the securement of the support member 122 when folded.

[0057] In order to ensure that the support member 122 can maintain a balanced support for the body 110 when it is in the working position, Figures 2 to 4In the embodiment shown in , there are two support mechanisms 120, and the two support mechanisms 120 are arranged opposite to each other along the Y direction perpendicular to the X direction in the figure. The driving mechanism 140 is simultaneously connected to the two support mechanisms 120 to drive the connecting shafts 121 of the two support mechanisms 120 to rotate at the same time, for example, driving the two connecting shafts 121 to rotate in opposite or relative directions, so that the support members 122 of the two support mechanisms 120 are simultaneously located in the working position or the storage position.

[0058] For details, please refer to Figure 4 The locking mechanism 130 includes a locking assembly 131 and an operating assembly 132 connected to the locking assembly 131. The operating assembly 132 can control the movement of the locking assembly 131 to unlock the locking assembly 131. The locking mechanism 130 includes at least one locking assembly 131, and the locking assembly 131 is arranged in a one-to-one correspondence with the support member 122. In this embodiment, each connecting shaft 121 has two support members 122, and there are four support members 122 in total. Therefore, there are also four corresponding locking assemblies 131, each locking assembly 131 is arranged next to a corresponding support member 122. Figure 4 、 Figure 5 and Figure 6 The locking assembly 131 includes a locking pin 1311, which is used to cooperate with the corresponding support member 122, and the locking pins 1311 of all locking assemblies 131 are centrally connected to the operating assembly 132. When the locking pin 1311 interferes with the corresponding support member 122, the locking assembly 131 is in a locked state. When the locking pin 1311 is disengaged from the corresponding support member 122, the locking assembly 131 is in an unlocked state. The locking pins 1311 of all locking assemblies 131 are centrally connected to the operating assembly 132, so that the operating assembly 132 can control all locking pins 1311 to disengage from the corresponding support member 122, thereby allowing each support member 122 to switch between the working position and the storage position. Thus, when each support member 122 is in the working position or the storage position, the locking pin 1311 can lock its position. Therefore, when the locking assembly 131 is in the locked state, the support mechanism 120 as a whole can be ensured to be non-shaky. In particular, when the support member 122 is in the working position, it can effectively prevent the load-bearing device 100 from shaking due to external forces, and the structure is stable. It is understood that the locking pin 1311 can also interfere with the connecting shaft 121 to prevent the connecting shaft 121 from rotating, or disengage from the connecting shaft 121 to allow the connecting shaft 121 to rotate, without limitation here.

[0059] like Figure 6As shown, the locking assembly 131 also includes a first elastic element 1312. The locking assembly 131 is automatically kept in the locked state under the action of the first elastic element 1312. The first elastic element 1312 can be an elastic element such as a spring, which is configured to provide an elastic force to keep the locking assembly 131 in the locked state. Specifically, the first elastic element 1312 and the locking pin 1311 are also arranged in a one-to-one correspondence. The locking assembly 131 also includes a mounting seat 1313. The mounting seat 1313 is arranged at the bottom of the body 110. The locking pin 1311 is elastically connected to the mounting seat 1313 through the first elastic element 1312. The locking pin 1311 can automatically remain in a position extended (i.e. locked) relative to the mounting seat 1313 under the action of the first elastic element 1312. Figure 7 and Figure 8 As shown, when the locking assembly 131 is in the locked state, the first elastic element 1312 is extended, the locking pin 1311 extends relative to the mounting seat 1313 and interferes with the support member 122; when the locking assembly 131 is in the unlocked state, the first elastic element 1312 is compressed, the locking pin 1311 retracts relative to the mounting seat 1313 and disengages from the support member 122. With this arrangement, only an external force needs to be applied to the locking pin 1311 to retract the locking pin 1311 into the mounting seat 1313 to unlock the locking pin. Once the external force applied to the locking pin 1311 disappears, the locking pin 1311 automatically returns to its original position and extends outside the mounting seat 1313, thereby enabling the locking pin 1311 to automatically lock the support member 122 in the working position or the storage position, making it convenient for the user.

[0060] like Figure 7 and Figure 8 As shown, in order to allow the locking pin 1311 to interfere with the support member 122, the support member 122 is provided with a first insertion hole 122a and a second insertion hole 122b. The first insertion hole 122a and the second insertion hole 122b are spaced apart around the central axis of the connecting shaft 121, one of which corresponds to the working position and the other corresponds to the storage position. The first insertion hole 122a corresponds to the working position and the second insertion hole 122b corresponds to the storage position. Figure 7 As shown, when the support member 122 is located at the working position, the locking pin 1311 can be inserted into the first insertion hole 122a to fix the support member 122 at the working position; Figure 8As shown, when the support member 122 is in the storage position, the locking pin 1311 can be inserted into the second insertion hole 122b to fix the support member 122 in the storage position. It should be noted that since the first elastic element 1312 automatically keeps the locking pin 1311 in the locked state, when the support member 122 is rotated to align the support member 122 with the corresponding first insertion hole 122a and second insertion hole 122b, the locking pin 1311 will automatically extend and insert into the first insertion hole 122a and second insertion hole 122b; and during the process of the support member 122 rotating from the first insertion hole 122a to the second insertion hole 122b, the locking pin 1311 is always in contact with the support member 122 under the action of the first elastic element 1312, the first elastic element 1312 is compressed, and the locking assembly 131 is in the unlocked state. Therefore, when the support member 122 switches between the working position and the storage position, the operating handle 1322 can be released without having to hold the operating handle 1322 all the time, which makes operation more convenient.

[0061] like Figure 9 As shown, the operating assembly 132 includes a plurality of pull ropes 1321 connected to each locking pin 1311 and an operating handle 1322 connected to each pull rope 1321. Figure 4 、 Figure 10 and Figure 11 As shown, the number of pull ropes 1321 corresponds to the number of locking pins 1311, and one end of each pull rope 1321 is connected to a corresponding locking pin 1311, and the other end is connected to the operating handle 1322, so that the operating handle 1322 is connected to different locking pins 1311 through a plurality of pull ropes 1321. At the same time, the operating handle 1322 can simultaneously control multiple locking pins 1311 to unlock. When the operating handle 1322 is moved under the action of an external force, the operating handle 1322 can simultaneously pull all the pull ropes 1321 to pull the locking pins 1311, so that all the locking pins 1311 can move synchronously, thereby eliminating interference with all the support members 122. More specifically, as Figure 5 、 Figure 10 、 Figure 11As shown, the pull rope 1321 is pressed and connected with the corresponding locking pin 1311 through a pin 1323. A part of the locking pin 1311 is located in the mounting seat 1313, and one end of the pull rope 1321 is also inserted into the mounting seat 1313. A long slot 1313a is provided on the mounting seat 1313. The other end of the pin 1323 is passed through the slot 1313a and inserted into the mounting seat 1313, and the pin 1323 also abuts against the end of the pull rope 1321 inserted into the mounting seat 1313, thereby realizing the mutual fixed connection between the pull rope 1321 and the locking pin 1311. Furthermore, when the pull cord 1321 pulls the locking pin 1311 relative to the mounting base 1313, the locking pin 1311 can only move in a straight line due to the guidance of the slot 1313a, thereby accurately inserting the locking pin 1311 into the first insertion hole 122a or the second insertion hole 122b defined in the support member 122. Furthermore, the pin 1323 and the locking pin 1311 are detachable, allowing the length of the pull cord 1321 to be adjusted as needed.

[0062] like Figure 4 、 Figure 12 As shown, the drive mechanism 140 includes a drive assembly 141 and a steering assembly 142. The drive assembly 141 is connected to the connecting shafts 121 of the two support mechanisms 120 through the steering assembly 142. Specifically, the drive assembly 141 includes a drive handle 1411, which is connected to the connecting shaft 121 and is used to control the support member 122 to be located in the working position or the storage position. More specifically, the drive handle 1411 is rotatably connected to the connecting shaft 121; the drive assembly 141 also includes a drive rod 1412, which is connected to the two connecting shafts 121 through the steering assembly 142. The drive handle 1411 is connected to the drive rod 1412 and can move together with the drive rod 1412 to simultaneously control the rotation of the two connecting shafts 121. In other embodiments, the drive rod 1412 and the drive handle 1411 can also be provided as one body. In this embodiment, the drive rod 1412 is located between the two connecting shafts 121, and both ends of the drive rod 1412 are respectively connected to the connecting shafts 121 through the steering assembly 142. The central axis of the drive rod 1412 extends along the Y direction, that is, the central axis of the drive rod 1412 is perpendicular to the central axis of the connecting shaft 121. When an external force is applied to the drive handle 1411, the drive handle 1411 can drive the drive rod 1412 to rotate about the central axis of the drive rod 1412, thereby causing the two connecting shafts 121 to rotate in opposite, relative directions.

[0063] like Figure 4 and Figure 13As shown, the steering assembly 142 includes a first transmission gear 1421 mounted on the connecting shaft 121 and a second transmission gear 1422 mounted on the drive rod 1412. Specifically, each connecting shaft 121 is mounted with a first transmission gear 1421, and each end of the drive rod 1412 is mounted with a second transmission gear 1422. Each second transmission gear 1422 engages with the first transmission gear 1421 mounted on the corresponding connecting shaft 121 for transmission. The drive assembly 141 is connected to the gears of the connecting shafts 121, allowing simultaneous control of the movement of the two connecting shafts 121 in opposite or opposite directions (both opposite and relative motion are possible). This is a unique structural feature of gear transmission. In other words, the drive handle 1411 can control the switching of the support member 122 between the working position and the storage position. In other embodiments, the steering assembly 142 can also be inclined, but the inclined surface can only control the movement of the connecting shafts 121 in one direction (either opposite or opposite). If movement in the other direction is required, additional structure is required. Compared with other steering structures, the gear steering structure provided in this embodiment has a simple structure and high reliability, and can further fix the connecting shaft 121, rather than relying solely on the locking assembly 131 to fix the connecting shaft 121; through the mutual engagement of the first transmission gear 1421 and the second transmission gear 1422, the connecting shaft 121 can be fixed under the mutual engagement of the gears when not subjected to external force, and only when the driving handle 1411 drives the driving rod 1412 to rotate, can the connecting shaft 121 be driven to rotate through the engagement of the second transmission gear 1422 and the first transmission gear 1421, thereby further reducing the shaking of the connecting shaft 121.

[0064] More specifically, since the drive rod 1412 and the connecting shaft 121 are perpendicular to each other, in order to achieve the transmission connection between the drive rod 1412 and the connecting shaft 121, the first transmission gear 1421 and the second transmission gear 1422 are both bevel gears. Optionally, the wheel diameter of the first transmission gear 1421 is larger, and the wheel diameter of the second transmission gear 1422 is smaller. The gear ratio of the first transmission gear 1421 to the second transmission gear 1422 can be 2:1, and of course other gear ratios can also be used, without any special limitation. It is understood that when there is only one support mechanism 120, the first transmission gear 1421 and the second transmission gear 1422 can be spur gears, so that the drive rod 1412 and the connecting shaft 121 can be parallel to each other, or the drive rod 1412 can be omitted, and the drive handle 1411 can be directly connected to the second transmission gear 1422, without any limitation. It can also be understood that the structure in which the driving handle 1411 controls the movement of the connecting shaft 121 is not limited to the structure shown in the embodiment of the figure. In other embodiments, there are two driving rods 1412, and the driving handle 1411 is arranged between the two driving rods 1412. One end of each driving rod 1412 is fixedly connected to a corresponding connecting shaft 121, and the other end cooperates with the inclined surface of the driving handle 1411, so that when the driving handle 1411 moves relative to the driving rod 1412, the driving rod 1412 can drive the connecting shaft 121 to move horizontally along the Y direction under the push of the driving handle 1411, and it can also be achieved that the support member 122 drives the roller 123 to be exposed to the main body 110 and the support member 122 is located in the working position; or the support member 122 drives the roller 123 to be stored in the main body 110, and the support member 122 is located in the storage position.

[0065] In order to allow the operator to simultaneously control the driving handle 1411 and the operating handle 1322, the operating handle 1322 is movably connected to the driving handle 1411 and can rotate together with the driving handle 1411 to control the locking assembly 131 to be in the unlocked state. Furthermore, in order to allow the operator to simultaneously operate the driving handle 1411 and the operating handle 1322 with one hand, the operating handle 1322 is arranged close to the driving handle 1411, and the driving handle 1411 and the operating handle 1322 can both rotate around the same rotation axis. Specifically, as Figure 12As shown, the interior of the driving handle 1411 has a hollow inner cavity and is provided with a guide groove 1411a connected to the inner cavity. The operating handle 1322 is inserted into the guide groove 1411a and a connecting block is installed at the end thereof. The end of the pull rope 1321 away from the locking pin 1311 is accommodated in the inner cavity of the driving handle 1411 and is connected to the connecting block, so that the operating handle 1322 can rotate together with the driving handle 1411 and can also move relative to the driving handle 1411; at the same time, since a part of the pull rope 1321 is accommodated in the driving handle 1411, the overall appearance of the wheel axle system can appear neat, and the pull rope 1321 can be prevented from being entangled and knotted. In other embodiments, in order to simplify the structure, the driving handle 1411 and the operating handle 1322 can be set to be integrally formed; it can be understood that the driving handle 1411 mainly realizes the rotation of the connecting shaft 121, and the operating handle 1322 mainly realizes the unlocking of the locking assembly 131. In this structure, the operating handle 1322 is directly set on the connecting shaft 121, so that the operating handle 1322 can not only pull the locking pin 1311 to move, but also drive the connecting shaft 121 to rotate, thereby realizing the function of the driving handle 1411.

[0066] Furthermore, if Figure 9 As shown, the operating assembly 132 also includes a second elastic element 1324 provided on the driving handle 1411. The second elastic element 1324 can also be an elastic element such as a spring. The operating handle 1322 is elastically connected to the driving handle 1411 through the second elastic element 1324, thereby providing an elastic force for the operating handle 1322 to move away from the driving handle 1411. When the operating handle 1322 approaches the driving handle 1411, the second elastic element 1324 contracts to generate an elastic force, and the operating handle 1322 pulls the locking pin 1311 out of the support member 122 through the pull rope 1321, and the locking assembly 131 is in an unlocked state. Figure 2 As shown, when the driving handle 1411 is rotated to the first position, the support member 122 can be controlled to be in the working position; Figure 3 As shown, when the driving handle 1411 is rotated to the second position, the support member 122 can be controlled to be in the storage position. When the driving handle 1411 controls the support member 122 to switch between the working position and the storage position, the operating handle 1322 can control the locking assembly 131 to be in the unlocked state.

[0067] like Figure 14 and Figure 15As shown, when the driving handle 1411 and the operating handle 1322 move together to the first position or the second position, in order to fix the driving handle 1411 and the operating handle 1322, the bottom of the main body 110 has two connecting seats 112, and the two connecting seats 112 are symmetrically arranged with a plane passing through the central axis of the driving rod 1412 as a symmetry plane, and each connecting seat 112 is respectively provided with a placement groove 1121. When the support member 122 is in the working position or the storage position, that is, when the driving handle 1411 and the operating handle 1322 move together to the first position or the second position, the operating handle 1322 is away from the driving handle 1411 and is confined in the placement groove 1121. Due to the presence of the second elastic element 1324, the elastic force provided by the second elastic element 1324 can make the operating handle 1322 fixed relative to the driving handle 1411 when it is confined in the placement groove 1121, thereby preventing the driving handle 1411 from shaking and synchronously fixing the operating handle 1322 and the driving handle 1411. For example, in combination with Figure 2 and Figure 14 As shown, when the driving handle 1411 and the operating handle 1322 move to the first position together, the support member 122 is located at the working position, and the operating handle 1322 is limited in the placement groove 1121; Figure 3 and Figure 15 As shown, when the driving handle 1411 and the operating handle 1322 move together to the second position, the support member 122 is in the storage position, and the operating handle 1322 is confined within another receiving groove 1121. Preferably, each connecting seat 112 may also be provided with a retaining groove 1122. When the driving handle 1411 and the operating handle 1322 move together to the first position or the second position, the driving handle 1411 is confined within the retaining groove 1122 to further prevent the driving handle 1411 from shaking. More preferably, the length of the receiving groove 1121 is greater than or equal to the distance that the locking pin 1311 can extend out of the mounting seat 1313, thereby ensuring that the locking pin 1311 can be disengaged from the support member 122 before the driving handle 1411 is rotated about the central axis of the driving rod 1412. More preferably, a slope is provided on the side wall of the seating groove 1121 away from the main body 110 of the carrying device 100. When the operating handle 1322 continues to approach the seating groove 1121, the operating handle 1322 first abuts against the slope, so that the slope generates a supporting force on the operating handle 1322. The supporting force drives the operating handle 1322 to approach the driving handle 1411 and compresses the second elastic element 1324, so that the operating handle 1322 passes over the side wall and is limited in the seating groove 1121. At this time, the second elastic element 1324 extends.

[0068] Based on the above structural design, the following is a detailed description of the method for using the carrier device 100. It can be understood that the method for using the carrier device 100 includes a folding method and an unfolding method, which are mutually opposite operations. Here, the unfolding method will be described in detail:

[0069] First, grip the operating handle 1322 and control it to move closer to the driving handle 1411 until both can be held simultaneously with one hand, with the locking assembly 131 unlocked and the support member 122 in the retracted position. During this step, as the operating handle 1322 moves relative to the driving handle 1411, the operating handle 1322, via the pull cord 1321, pulls the locking pin 1311 toward the mounting seat 1313 and retracts it back into the mounting seat 1313. The locking pin 1311 disengages from the first insertion hole 122a of the support member 122, and the locking assembly 131 is unlocked. At this point, the connecting shaft 121 can rotate freely.

[0070] Then, the driving handle 1411 is rotated, causing the driving handle 1411 to drive the operating handle 1322 to rotate around the central axis of the driving rod 1412 until the operating handle 1322 and the driving handle 1411 rotate from the second position to the first position. It should be noted that during this process, the grip on the operating handle 1322 can be released, and the locking pin 1311 is abutted against the support member 122 under the action of the first elastic element 1312. In this arrangement, even if the operator does not control the operating handle 1322, the locking assembly 131 will always remain unlocked.

[0071] Finally, the driving handle 1411 is continuously rotated until the driving handle 1411 drives the operating handle 1322 to be restrained in the seating groove 1121. During this process, the operating handle 1322 is restrained in the seating groove 1121 under the action of the second elastic element 1324 and simultaneously drives the driving handle 1411 to be fixed. The locking pin 1311 is inserted into the second insertion hole 122b of the support member 122, the locking assembly 131 is in a locked state, and the support member 122 is in the working position.

[0072] like Figure 1 As shown, when the goods are placed on the carrying surface 111 at the top of the body 110, in order to prevent the goods from falling from the body 110, as shown in FIG. Figure 1 As shown, a lock buckle 150 is provided on the bearing surface 111 of the main body 110. The lock buckle 150 is used to fix the items placed on the bearing surface 111 of the main body 110 on the main body 110. Preferably, the lock buckle 150 is set on the edge of the upper surface of the main body 110, and the number of the lock buckles 150 is not limited and can be set according to specific needs.

[0073] like Figure 16 and Figure 17As shown, the logistics trolley 10 provided by the present application also includes a push rod 300 for the user to hold to facilitate pulling or pushing the logistics trolley 10 to move. In order to facilitate the storage of the logistics trolley 10, the push rod 300 can be movably mounted on the top of the body 110 so that the push rod 300 can rotate relative to the body 110 and be in a Figure 16 shown folded or Figure 17 The expanded state shown, such as Figure 16 As shown, when the push rod 300 is in the folded state, the push rod 300 is parallel to the bearing surface 111, so that the overall size of the logistics trolley 10 is small; Figure 17 As shown, when the push rod 300 is in the expanded state, the push rod 300 forms a certain angle (for example, 90°) with the bearing surface 111. Figure 18 and Figure 19 As shown, a groove 113 is provided on the bearing surface 111 of the body 110, and a hinge shaft 114 is provided at the bottom of the groove 113. The push rod 300 has a connecting end 301, and a waist-shaped hole 302 is provided at the connecting end 301. The hinge shaft 114 is passed through the waist-shaped hole 302, so that the push rod 300 can be movably connected to the hinge shaft 114 through the waist-shaped hole 302. Figure 18 As shown, when the hinge shaft 114 abuts against the upper end wall of the waist-shaped hole 302, the connecting end 301 of the push rod 300 abuts against the side wall of the groove 113, so that the push rod 300 is fixed at a position at a certain angle to the bearing surface 111 and is in an unfolded state; Figure 19 As shown, when the hinge shaft 114 abuts against the lower end wall of the waist-shaped hole 302 , the push rod 300 can rotate around the central axis of the hinge shaft 114 so that the push rod 300 can be parallel to the supporting surface 111 and be in a folded state.

[0074] In this way, when the push rod 300 needs to be unfolded, just rotate the push rod 300 so that the push rod 300 is perpendicular to the bearing surface 111, and then insert the connecting end 301 of the push rod 300 downward into the groove 113, and use gravity to make the upper end wall of the waist-shaped hole 302 opened at the connecting end 301 abut against the hinge shaft 114. At this time, the connecting end 301 of the push rod 300 is blocked by the side wall of the groove 113, so the connecting end 301 abuts against the side wall of the groove 113, so that the push rod 300 can no longer rotate relative to the main body 110, thereby completing the unfolding action. When the push rod 300 needs to be folded, the push rod 300 is lifted upward, so that the lower end wall of the waist-shaped hole 302 formed in the connecting end 301 abuts the hinge shaft 114. At this time, the connecting end 301 is mostly outside the groove 113, allowing the push rod 300 to rotate relative to the body 110 toward the body 110, thereby folding the push rod 300 parallel to the supporting surface 111. Through this design, the push rod 300 can be quickly and easily unfolded or folded, eliminating a series of tedious steps and improving the convenience of folding the push rod 300.

[0075] like Figure 20 As shown, the present application also provides a workbench 40, which also includes a load-bearing device 100. It is understood that the load-bearing device 100 provided in the present application is not limited to being used in the logistics trolley 10 and the workbench 40, but can also be used in any structure that needs to carry goods. The difference between the workbench 40 and the logistics trolley 10 is that the load-bearing device 100 includes a plurality of support legs 41, but does not have rollers 123. Figure 21 As shown, the number of support legs 41 corresponds to the number of support members 122 in the carrying device 100. Each support leg 41 is mounted on a corresponding support member 122, so that when the support member 122 is in the working position, the support legs 41 can also be opened, so that the carrying device 100 can be supported on the ground by the support legs 41. The structure of the carrying device 100 is exactly the same as that described in the above embodiment, and will not be repeated here.

[0076] It can be seen that through the design of the above structure, whether the carrying device 100 is used for the logistics cart 10 or the workbench 40, the operator can control the driving handle 1411 to unfold or fold the support member 122; and when the support member 122 is unfolded or folded, the supporting mechanism 120 is supported at the same time, and the operating handle 1322 is controlled with the same hand to lock or unlock. The operator does not need to operate in multiple steps, which greatly facilitates the operation and improves the user experience.

[0077] The technical features of the above-described embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification. The above-described embodiments only express several implementation methods of the present application, and their descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that for ordinary technicians in this field, without departing from the concept of the present application, several variations and improvements can be made, which all fall within the scope of protection of the present application. Therefore, the scope of protection of the patent application of this application shall be based on the attached claims.

Claims

1. A carrying device, characterized in that: include: ontology; A support mechanism is mounted on the bottom of the body, the support mechanism comprising a connecting shaft and a plurality of supporting members arranged on the connecting shaft, the connecting shaft can drive the supporting members to rotate together around the central axis of the connecting shaft so that the supporting members are located in a working position or a storage position; A locking mechanism, the locking mechanism comprising a locking assembly and an operating assembly connected to the locking assembly, the locking assembly having a locked state and an unlocked state, the operating assembly being capable of controlling the movement of the locking assembly to place the locking assembly in the unlocked state; When the support member is located at the working position and the locking assembly is in the locked state, the coupling is fixed.

2. The carrying device according to claim 1, characterized in that: The locking assembly is arranged corresponding to the support member, and the locking assembly includes a locking pin; when the locking pin interferes with the support member, the locking assembly is in a locked state, and when the locking pin is disengaged from the support member, the locking assembly is in an unlocked state.

3. The carrying device according to claim 2, characterized in that: The locking assembly further includes a first elastic element, and the locking assembly is automatically kept in the locked state under the action of the first elastic element.

4. The carrying device according to claim 2, characterized in that: The operating assembly includes a plurality of pull ropes and an operating handle connected to the pull ropes. One end of each pull rope is connected to a corresponding locking pin, and the other end is connected to the operating handle.

5. The carrying device according to claim 1, characterized in that: The carrying device also includes a driving mechanism, which includes a driving assembly and a steering assembly. The supporting mechanism includes two relatively arranged connecting shafts. The driving assembly is connected to the connecting shaft through the steering assembly and can drive the two connecting shafts to rotate in opposite directions.

6. The carrying device according to claim 5, characterized in that: The driving assembly includes a driving handle, and the driving handle can control the support member to be located in the working position or the storage position; the operating assembly also includes an operating handle, and the operating handle can control the locking assembly to switch from the locked state to the unlocked state; The drive handle and the operating handle are operable simultaneously to control the support member and the locking assembly.

7. The carrying device according to claim 6, characterized in that: The driving handle and the operating handle can both rotate around the same rotation axis.

8. The carrying device according to claim 6, characterized in that: The driving handle and the operating handle may be integrally formed.

9. The carrying device according to claim 6, characterized in that: The operating handle is arranged close to the driving handle so that the driving handle and the operating handle can be operated simultaneously by one hand.

10. The carrying device according to claim 6, characterized in that: When the driving handle controls the support member to be located in the storage position or the working position, the locking assembly is in the locked state; when the driving handle controls the support member to switch between the working position and the storage position, the locking assembly is in the unlocked state.

11. The carrying device according to claim 10, characterized in that: The operating assembly further includes a second elastic element provided on the driving handle, and the operating handle is elastically connected to the driving handle via the second elastic element; when the operating handle is close to the driving handle, the locking assembly is in the unlocked state.

12. The carrying device according to claim 11, characterized in that: The body is provided with a placement groove. When the support member is located at the working position or the storage position, the operating handle is confined in the placement groove and the operating handle and the driving handle are fixed synchronously.

13. The carrying device according to claim 6, characterized in that: The driving assembly further comprises a driving rod, which is rotatable around its own central axis and connected to the two connecting shafts via the steering assembly, and the driving handle is arranged on the driving rod.

14. The carrying device according to claim 13, characterized in that: The steering assembly includes a first transmission gear sleeved on the connecting shaft and a second transmission gear sleeved on the driving rod. The first transmission gear and the second transmission gear are engaged with each other for transmission. The central axis of the driving rod is perpendicular to the central axis of the connecting shaft.

15. The carrying device according to claim 1, characterized in that: A lock buckle is provided on the bearing surface of the main body, and the lock buckle can be locked with an object placed on the bearing surface.

16. A method for using a carrying device, characterized in that: The method of use includes: Control the operating handle to put the locking assembly in an unlocked state, hold the operating handle and the driving handle simultaneously with one hand, and the support member is in the storage position; controlling the operating handle and the driving handle to rotate around the central axis of the driving rod until the operating handle and the driving handle rotate from the second position to the first position; The operating handle is limited in the placement groove under the action of the second elastic element and drives the driving handle to be fixed, and the locking assembly is in a locked state and the support member is in a working position.

17. A logistics trolley, characterized in that: The logistics trolley includes the carrying device according to any one of claims 1 to 16, and the carrying device also includes a plurality of rollers installed on the support member.

18. A workbench, characterized in that: The workbench includes the carrying device according to any one of claims 1 to 16, and the carrying device further includes a plurality of supporting legs installed on the support member.

Images