Bearing device, logistics trolley and workbench

Abstract

The application relates to a bearing device, 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 driving mechanism. The supporting mechanism is installed on the opposite sides of the bottom of the body. Each supporting mechanism comprises a connecting shaft and a plurality of supporting pieces arranged on the connecting shaft. The connecting shaft can drive the supporting pieces to rotate around the central axis of the connecting shaft, so that the supporting pieces are located at a working position or a storage position. The driving mechanism comprises a driving assembly and a steering assembly. The driving assembly is in transmission connection with the connecting shaft through the steering assembly and can drive the two connecting shafts to move in opposite directions. When the supporting pieces are located at the working position, the supporting pieces can support the body. When the supporting pieces are located at the storage position, the supporting pieces are stored in the vehicle body, so that the bearing device as a whole has a flat plate structure, thereby facilitating storage or carrying. When the bearing device is applied to the logistics trolley or the workbench, the convenience of use is improved.

Description

Technical Field

[0001] This application relates to the field of article carrying technology, and in particular to a carrying device, a logistics trolley and a workbench. Background Technology

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

[0003] To facilitate storage and portability, the support mechanism is typically located either in a stowage position folded into the main body or in a working position unfolded outside the main body. When folded into the main body, the support device has a flat, plate-like structure for easy storage; when unfolded, it provides support for the main body. However, the folding and unfolding of the support mechanism in existing support devices is cumbersome, causing inconvenience for users. Utility Model Content

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

[0005] This application provides a support device, including:

[0006] ontology;

[0007] Support mechanisms are installed on opposite sides of the bottom of the main body. Each support mechanism includes a connecting shaft and several support members disposed on the connecting shaft. The connecting shaft can drive the support members to rotate together around the central axis of the connecting shaft so that the support members are in the working position or the storage position.

[0008] The drive mechanism includes a drive component and a steering component. The drive component is connected to the coupling shafts via the steering component and can drive the two coupling shafts to move in opposite directions.

[0009] Furthermore, the drive assembly includes a drive rod, which is connected to the two connecting shafts via the steering assembly, and the drive rod is capable of controlling the two connecting shafts to rotate simultaneously.

[0010] Furthermore, the drive rod is located between the two connecting shafts, and both ends of the drive rod are respectively connected to the corresponding two connecting shafts via steering components. The central axis of the drive rod is perpendicular to the central axis of the connecting shaft.

[0011] Furthermore, the steering assembly includes a first transmission gear sleeved on the connecting shaft and a second transmission gear sleeved on the drive rod. The first transmission gear and the second transmission gear mesh with each other for transmission. The drive rod can rotate around its own central axis to drive the connecting shaft to rotate synchronously and drive the support member to switch between the working position and the storage position.

[0012] Furthermore, the drive assembly also includes a drive handle, which is connected to the drive rod and can drive the drive rod to rotate.

[0013] Furthermore, the supporting device also includes a locking mechanism, which includes a locking component and an operating component connected to the locking component. The operating component can control the movement of the locking component. When the locking component interferes with the support member, the locking component is in a locked state. When the locking component is disengaged from the support member, the locking component is in an unlocked state.

[0014] Furthermore, the drive component includes a drive handle, which can control the support member to be located in the working position or the storage position; the operation component includes an operation handle, which can control the locking component to switch from the locked state to the unlocked state; the drive handle and the operation handle can simultaneously control the support member and the locking component.

[0015] Furthermore, the operating handle is positioned close to the drive handle, allowing simultaneous operation of both the drive handle and the operating handle with one hand; when the drive handle controls the support member to be in the working position or the storage position, the locking component is in the locked state; when the drive handle controls the support member to switch between the working position and the storage position, the operating handle simultaneously controls the locking component to be in the unlocked state.

[0016] The aforementioned support device, by setting support members on the connecting shaft to form a support mechanism, and installing the support mechanism on opposite sides of the bottom of the main body, allows the support members to be positioned in the working or storage position by rotating the connecting shaft around its central axis. Furthermore, a drive assembly is provided, which is connected to the connecting shaft of the support mechanism via a steering assembly, enabling the two connecting shafts to move in opposite directions. When the support member is in the working position, it supports the main body; when in the storage position, it is stored within the vehicle body, resulting in a flat structure for the entire support device, facilitating storage or transport. When applied to logistics carts or workbenches, this enhances ease of use.

[0017] This application provides a logistics cart, the logistics cart including a carrying device as described in any of the preceding claims, the carrying device further including a plurality of rollers mounted on the support member.

[0018] This application provides a workbench that includes a support device as described in any of the preceding claims, the support device further including a plurality of support legs mounted on the support member. Attached Figure Description

[0019] Figure 1 A three-dimensional logistics vehicle provided in an embodiment of this application Figure 1 .

[0020] Figure 2 A three-dimensional logistics vehicle provided in an embodiment of this application Figure 2 .

[0021] Figure 3 This is a schematic diagram of the support member of the bearing device provided in an embodiment of this application when it is in the storage position.

[0022] Figure 4 This is a schematic diagram of a locking mechanism and a driving mechanism provided in an embodiment of this application.

[0023] Figure 5 This is a partial structural schematic diagram of a locking mechanism provided in an embodiment of this application.

[0024] Figure 6 An exploded view of a portion of the locking mechanism provided in an embodiment of this application.

[0025] Figure 7 This is a schematic diagram of the support member of the bearing device provided in an embodiment of this application when it is in the working position.

[0026] Figure 8 An enlarged schematic diagram of the support member of the bearing device provided in an embodiment of this application when it is in the storage position.

[0027] Figure 9 This is a partial structural diagram of the driving component and the operating component provided in an embodiment of this application.

[0028] Figure 10 This is a partial structural diagram of the locking mechanism in a bearing device provided in an embodiment of this application.

[0029] Figure 11 for Figure 10 An explosion diagram.

[0030] Figure 12 for Figure 4 An enlarged schematic diagram of region A in the middle.

[0031] Figure 13for Figure 4 Enlarged schematic diagram of region B in the middle.

[0032] Figure 14 for Figure 2 A magnified view of region C in the middle.

[0033] Figure 15 for Figure 3 A magnified diagram of region D in the middle.

[0034] Figure 16 This is a schematic diagram of the push rod in the folded state of a logistics cart provided in an embodiment of this application.

[0035] Figure 17 This is a schematic diagram of the push rod in the deployed state of a logistics trolley provided in an embodiment of this application.

[0036] Figure 18 for Figure 17 A magnified view of region E in the middle.

[0037] Figure 19 for Figure 16 A magnified diagram of region F in the middle.

[0038] Figure 20 A three-dimensional worktable provided in an embodiment of this application Figure 1 .

[0039] Figure 21 A three-dimensional worktable provided in an embodiment of this application Figure 2 . Detailed Implementation

[0040] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0041] This application provides a carrying device and its usage method, a logistics cart, and a workbench, wherein the carrying device includes a support mechanism. When the support mechanism is folded, the carrying device has a flat structure for easy storage; when the support mechanism is unfolded, the carrying device can be used to carry goods. The carrying device can be applied to a logistics cart or a workbench. When the carrying device is applied to a logistics cart, the logistics cart can move goods quickly; when the carrying device is applied to a workbench, the workbench can store goods at a higher position.

[0042] The following description uses the application of the load-bearing device to a logistics vehicle as an example to illustrate the structure of the load-bearing device provided in this application and its usage method.

[0043] like Figure 1 As shown, the carrying device 100 includes a body 110 and a support mechanism 120 disposed at the bottom of the body 110. The top of the body 110 has a bearing surface 111, which is used to bear goods. The support mechanism 120 is used to increase the height of the body 110 from the ground so as to support the body 110.

[0044] like Figure 2 and Figure 3 As shown, the support mechanism 120 includes a connecting shaft 121, several support members 122, and several rollers 123. The central axis of the connecting shaft 121 extends along the X direction in the figure, and the several support members 122 are spaced apart along the X direction on the connecting shaft 121. The number of rollers 123 corresponds to the number of support members 122, with one roller 200 mounted on a corresponding support member 122, thereby facilitating rapid movement of the vehicle on the ground and making it easier for the operator to pull the logistics cart 10, saving the operator's physical strength. Under the action of external force, the connecting shaft 121 can drive the support members 122 to rotate together around the central axis of the connecting shaft 121, so that the support members 122 are in the working position or storage position. At the same time, the support members 122 drive the rollers 123 to rotate together. Figure 2 As shown, when the support 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 roller 123 and the support member 122 are folded flat relative to the main body 110, making the carrier device 100 flat, thus facilitating storage or carrying. Furthermore, the bottom of the main body 110 may also have a storage groove that corresponds to the contour of the support mechanism 120. After the support mechanism 120 is folded, it can be completely stored in the vehicle body, thus making the carrier device 100 smaller in size after folding, making it easier to store and carry the carrier device 100.

[0045] Furthermore, combined Figure 4As shown, the supporting device 100 also 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 support member 122 to be in the working position or the storage position. The locking component 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 component 131 is in the locked state, the connecting shaft 121 is fixed and cannot be rotated. When the support member 122 of the supporting mechanism 120 switches between the working position and the storage position, the locking component 131 is in the unlocked state, and the connecting shaft 121 can rotate freely. Further, in this embodiment, when the support member 122 of the supporting mechanism 120 is in the storage position, the locking component 131 is also in the locked state, and the connecting shaft 121 is fixed, which facilitates the fixing of the support member 122 when it is folded.

[0046] In order for the support member 122 to maintain balanced support for the body 110 when in the working position, Figures 2 to 4 In the embodiment shown, there are two support mechanisms 120. The two support mechanisms 120 are arranged opposite each other along the Y direction, which is perpendicular to the X direction in the figure. The drive mechanism 140 is simultaneously connected to the two support mechanisms 120 so as to drive the connecting shafts 121 of the two support mechanisms 120 to rotate simultaneously, for example, drive 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 in the working position or simultaneously in the storage position.

[0047] For details, please continue reading Figure 4 The locking mechanism 130 includes a locking component 131 and an operating component 132 connected to the locking component 131. The operating component 132 can control the movement of the locking component 131 to put the locking component 131 into an unlocked state. The locking mechanism 130 includes at least one locking component 131, and the locking components 131 are arranged one-to-one with the support members 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 locking components 131, and each locking component 131 is arranged next to a corresponding support member 122. See reference. Figure 4 , Figure 5 and Figure 6The locking assembly 131 includes a locking pin 1311, which engages with a corresponding support member 122. All locking pins 1311 of the 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 disengages from the corresponding support member 122, the locking assembly 131 is in an unlocked state. All locking pins 1311 of the locking assemblies 131 are also centrally connected to the operating assembly 132, allowing the operating assembly 132 to control all locking pins 1311 to disengage from their corresponding support members 122, thus allowing each support member 122 to switch between a working position and a storage position. Thus, when each support member 122 is in the working or stored position, it is locked in place by the locking pin 1311. Therefore, when the locking assembly 131 is locked, the entire support mechanism 120 will not shake. Especially when the support member 122 is in the working position, it can effectively prevent the bearing device 100 from shaking due to external force, and the structure is stable. It is understood that the locking pin 1311 can also interfere with the coupling 121 to prevent the coupling 121 from rotating, or disengage from the coupling 121 to allow the coupling 121 to rotate; this is not limited here.

[0048] like Figure 6 As shown, the locking assembly 131 also includes a first elastic element 1312. The locking assembly 131 automatically remains in a locked state under the action of the first elastic element 1312. The first elastic element 1312 can be a spring or other elastic element, configured to provide an elastic force that keeps the locking assembly 131 in the locked state. Specifically, the first elastic element 1312 and the locking pin 1311 are also correspondingly provided. The locking assembly 131 also includes a mounting base 1313, which is located at the bottom of the body 110. The locking pin 1311 is elastically connected to the mounting base 1313 via the first elastic element 1312. The locking pin 1311 can automatically remain in a position extended (i.e., locked) relative to the mounting base 1313 under the action of the first elastic element 1312. Figure 7 and Figure 8As shown, when the locking assembly 131 is in the locked state, the first elastic element 1312 extends, and the locking pin 1311 extends relative to the mounting base 1313 and interferes with the support member 122; when the locking assembly 131 is in the unlocked state, the first elastic element 1312 compresses, and the locking pin 1311 retracts relative to the mounting base 1313 and disengages from the support member 122. With this configuration, only an external force needs to be applied to the locking pin 1311 to retract it into the mounting base 1313 to unlock it. Once the external force applied to the locking pin 1311 disappears, the locking pin 1311 automatically returns to its original position and extends out of the mounting base 1313, thus enabling the locking pin 1311 to automatically lock the support member 122 in the working or stored position, facilitating user operation.

[0049] 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, with one corresponding to the working position and the other corresponding 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, as shown. Figure 7 As shown, when the support member 122 is in the working position, the locking pin 1311 can be inserted into the first insertion hole 122a to fix the support member 122 in the working position; as Figure 8 As shown, when the support member 122 is in the retracted position, the locking pin 1311 can be inserted into the second socket 122b to fix the support member 122 in the retracted 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 socket 122a and second socket 122b, the locking pin 1311 will automatically extend and insert into the first socket 122a and second socket 122b; and during the process of the support member 122 rotating from the first socket 122a to the second socket 122b, the locking pin 1311 always abuts against the support member 122 under the action of the first elastic element 1312, the first elastic element 1312 is compressed, and the locking component 131 is in the unlocked state. Therefore, when the support 122 switches between the working position and the storage position, the operating handle 1322 can be released, and there is no need to hold the operating handle 1322 at all times, thus making it more convenient to operate.

[0050] like Figure 9 As shown, the operating component 132 includes several pull ropes 1321 connected to each locking pin 1311 and an operating handle 1322 connected to each pull rope 1321, combined with... Figure 4 , Figure 10 and Figure 11As shown, the number of pull ropes 1321 corresponds to the number of locking pins 1311. 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. This allows the operating handle 1322 to be connected to different locking pins 1311 via several pull ropes 1321, enabling the operating handle 1322 to simultaneously control multiple locking pins 1311 for unlocking. When the operating handle 1322 is moved under external force, it can simultaneously pull all the pull ropes 1321 to pull the locking pins 1311, allowing all the locking pins 1311 to move synchronously, thereby releasing interference from all support members 122. More specifically, as... Figure 5 , Figure 10 , Figure 11 As shown, the pull rope 1321 is pressed and connected to the corresponding locking pin 1311 by a pin 1323. A part of the locking pin 1311 is located in the mounting base 1313. One end of the pull rope 1321 is also inserted into the mounting base 1313. The mounting base 1313 has an elongated slot 1313a. The other end of the pin 1323 passes through the slot 1313a and is inserted into the mounting base 1313. The pin 1323 also abuts against the end of the pull rope 1321 inserted into the mounting base 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 guide slot 1313a ensures that the locking pin 1311 can only move in a straight line, allowing it to be precisely inserted into the first insertion hole 122a or the second insertion hole 122b of the support member 122. Additionally, the pin 1323 is detachable from the locking pin 1311, allowing the length of the pull cord 1321 to be adjusted as needed.

[0051] like Figure 4 , Figure 12As shown, the drive mechanism 140 includes a drive assembly 141 and a steering assembly 142. The drive assembly 141 is driven by the steering assembly 142 and connected to the coupling shafts 121 of the two support mechanisms 120. Specifically, the drive assembly 141 includes a drive handle 1411, which is connected to the coupling shaft 121 and is used to control the support member 122 to be in the working position or the storage position. More specifically, the drive handle 1411 is rotatably connected to the coupling shaft 121. The drive assembly 141 also includes a drive rod 1412, which is driven by the steering assembly 142 and connected to the two coupling shafts 121. 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 coupling shafts 121. In other embodiments, the drive rod 1412 and the drive handle 1411 may also be integrated. 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 via steering components 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 shafts 121. When an external force is applied to the drive handle 1411, the drive handle 1411 can drive the drive rod 1412 to rotate together around the central axis of the drive rod 1412, thereby simultaneously driving the two connecting shafts 121 to rotate in opposite directions.

[0052] like Figure 4 and Figure 13As shown, the steering assembly 142 includes a first transmission gear 1421 sleeved on the connecting shaft 121 and a second transmission gear 1422 sleeved on the drive rod 1412. Specifically, each connecting shaft 121 is fitted with a first transmission gear 1421, and each end of the drive rod 1412 is fitted with a second transmission gear 1422. Each second transmission gear 1422 meshes with the first transmission gear 1421 sleeved on the corresponding connecting shaft 121. The drive assembly 141 is connected to the gears of the connecting shaft 121, which can simultaneously control the two connecting shafts 121 to move in opposite or relative directions (both opposite and relative movements can be achieved). This is a structural feature unique to gear transmission. That is, the drive handle 1411 can control the support member 122 to switch between the working position and the retracted position. In other embodiments, the steering assembly 142 can also be a ramp steering assembly, but the ramp can only control the connecting shaft 121 to move in one direction (opposite or relative directions, one of the two can be selected). If movement in the other direction is to be achieved, then an additional structure is required. Compared to other steering structures, the gear steering structure provided in this embodiment is simple in structure, highly reliable, and can further fix the coupling 121, instead of relying solely on the locking component 131 to fix the coupling 121. Through the mutual meshing of the first transmission gear 1421 and the second transmission gear 1422, the coupling 121 can be fixed under the mutual meshing of the gears even when no external force is applied. Only when the drive handle 1411 drives the drive rod 1412 to rotate can the coupling 121 be driven to rotate through the meshing of the second transmission gear 1422 and the first transmission gear 1421. Therefore, the shaking of the coupling 121 can be further reduced.

[0053] More specifically, since the drive rod 1412 is perpendicular to the connecting shaft 121, in order to achieve the transmission connection between the drive rod 1412 and the connecting shaft 121, both the first transmission gear 1421 and the second transmission gear 1422 are bevel gears. Optionally, the first transmission gear 1421 has a larger diameter and the second transmission gear 1422 has a smaller diameter. The gear ratio between the first transmission gear 1421 and the second transmission gear 1422 can be 2:1, or it can be any other gear ratio; there is no particular limitation here. 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. Alternatively, the drive rod 1412 can be omitted, and the drive handle 1411 can be directly connected to the second transmission gear 1422; there is no limitation here. It is also understood that the structure by which the drive handle 1411 controls the movement of the connecting shaft 121 is not limited to the structure shown in the embodiment in the figure. In other embodiments, there are two drive rods 1412, and the drive handle 1411 is disposed between the two drive rods 1412. One end of each drive rod 1412 is fixedly connected to a corresponding connecting shaft 121, and the other end is engaged with the inclined surface of the drive handle 1411. This allows the drive rod 1412 to move along the Y direction under the push of the drive handle 1411 when the drive handle 1411 moves relative to the drive rod 1412. Alternatively, the support member 122 can drive the roller 123 to be exposed outside the body 110 and the support member 122 can be in the working position; or the support member 122 can drive the roller 123 to be stored inside the body 110 and the support member 122 can be in the stored position.

[0054] To facilitate simultaneous control of the drive handle 1411 and the operating handle 1322 by the operator, the operating handle 1322 is movably connected to the drive handle 1411 and can rotate together with it to control the locking component 131 to be in the unlocked state. Furthermore, to allow the operator to operate both the drive handle 1411 and the operating handle 1322 with one hand, the operating handle 1322 is positioned close to the drive handle 1411, and both the drive handle 1411 and the operating handle 1322 can rotate around the same axis. Specifically, as... Figure 12As shown, the drive handle 1411 has a hollow inner cavity and a guide groove 1411a connecting the inner cavity. The operating handle 1322 passes through the guide groove 1411a and has a connecting block installed at its end. The end of the pull rope 1321 away from the locking pin 1311 is accommodated in the inner cavity of the drive handle 1411 and connected to the connecting block, so that the operating handle 1322 can rotate with the drive handle 1411 and can also move relative to the drive handle 1411. At the same time, since part of the pull rope 1321 is accommodated in the drive handle 1411, the overall appearance of the wheel and axle system is neat, and the pull rope 1321 can be prevented from getting tangled. In other embodiments, to simplify the structure, the drive handle 1411 and the operating handle 1322 can be integrally formed. It is understood that the drive handle 1411 mainly realizes the rotation of the connecting shaft 121, and the operating handle 1322 mainly realizes the unlocking of the locking component 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 drive handle 1411.

[0055] Furthermore, such as Figure 9 As shown, the operating assembly 132 also includes a second elastic element 1324 disposed on the drive 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 drive handle 1411 through the second elastic element 1324, thereby providing the operating handle 1322 with an elastic force away from the drive handle 1411. When the operating handle 1322 approaches the drive handle 1411, the second elastic element 1324 contracts to generate an elastic force, and the operating handle 1322 pulls the locking pin 1311 away from the support member 122 through the pull rope 1321, and the locking assembly 131 is in the unlocked state. Figure 2 As shown, when the drive handle 1411 is rotated to the first position, the support member 122 can be controlled to be in the working position; as Figure 3 As shown, when the drive handle 1411 is rotated to the second position, the support member 122 can be controlled to be in the storage position. When the drive handle 1411 controls the support member 122 to switch between the working position and the storage position, the operation handle 1322 can control the locking component 131 to be in the unlocked state.

[0056] like Figure 14 and Figure 15As shown, when the drive handle 1411 and the operating handle 1322 move together to the first or second position, in order to fix the drive handle 1411 and the operating handle 1322, the bottom of the body 110 has two connecting seats 112. The two connecting seats 112 are symmetrically arranged with a plane passing through the central axis of the drive rod 1412 as the symmetrical face, and each connecting seat 112 is provided with a mounting groove 1121. When the support member 122 is in the working position or the storage position, that is, when the drive handle 1411 and the operating handle 1322 move together to the first or second position, the operating handle 1322 moves away from the drive handle 1411 and is confined in the mounting groove 1121. Due to the presence of the second elastic element 1324, the elastic force provided by the second elastic element 1324 can fix the operating handle 1322 relative to the drive handle 1411 when it is confined in the mounting groove 1121, thereby preventing the drive handle 1411 from shaking and simultaneously fixing the operating handle 1322 and the drive handle 1411. For example, combined with Figure 2 and Figure 14 As shown, when the drive handle 1411 and the operating handle 1322 move together to the first position, the support member 122 is in the working position, and the operating handle 1322 is limited within the mounting groove 1121; combined with Figure 3 and Figure 15 As shown, when the drive handle 1411 and the operating handle 1322 move together to the second position, the support member 122 is in the retracted position, and the operating handle 1322 is confined within another mounting slot 1121. Preferably, each connecting seat 112 may also have a slot 1122, so that when the drive handle 1411 and the operating handle 1322 move together to the first or second position, the drive handle 1411 is confined within the slot 1122 to further prevent the drive handle 1411 from shaking. More preferably, the length of the mounting slot 1121 is greater than or equal to the distance by which the locking pin 1311 can extend out of the mounting seat 1313, thereby ensuring that the locking pin 1311 can disengage from the support member 122 before the drive handle 1411 is rotated about the central axis of the drive rod 1412. More preferably, a slope is provided on the side wall of the body 110 of the mounting groove 1121 away from the bearing device 100. When the operating handle 1322 approaches the mounting groove 1121, the operating handle 1322 first abuts against the slope, so that the slope generates a holding force on the operating handle 1322. The holding 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 mounting groove 1121. At this time, the second elastic element 1324 extends.

[0057] Based on the above structural design, the following is a detailed description of how to use the support device 100. It is understood that the support device 100 can be used in two ways: folding and unfolding. These are the reverse operations. The unfolding method will be described in detail here:

[0058] First, hold the operating handle 1322 and control it to move closer to the drive handle 1411 until both handles can be held simultaneously with one hand, and the locking component 131 is in the unlocked state and the support member 122 is in the retracted position. In this step, when the operating handle 1322 moves relative to the drive handle 1411, the operating handle 1322 can pull the locking pin 1311 towards the mounting base 1313 via the pull cord 1321, causing the locking pin 1311 to retract into the mounting base 1313. The locking pin 1311 disengages from the first insertion hole 122a of the support member 122, and the locking component 131 is in the unlocked state. At this time, the connecting shaft 121 can rotate freely.

[0059] Then, rotate the drive handle 1411, causing it to drive the operating handle 1322 to rotate around the central axis of the drive rod 1412 until the operating handle 1322 and the drive 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. The locking pin 1311, under the action of the first elastic element 1312, abuts against the support member 122. With this configuration, although the operator does not control the operating handle 1322, the locking component 131 remains in the unlocked state.

[0060] Finally, continue rotating the drive handle 1411 until it drives the operating handle 1322 to be limited within the mounting groove 1121. During this process, the operating handle 1322 is limited within the mounting groove 1121 under the action of the second elastic element 1324 and simultaneously drives the drive handle 1411 to be fixed. The locking pin 1311 is inserted into the second insertion hole 122b of the support member 122, the locking component 131 is in the locked state, and the support member 122 is in the working position.

[0061] like Figure 1 As shown, when goods are placed on the bearing surface 111 on top of the main body 110, in order to prevent the goods from falling off the main body 110, as follows: Figure 1 As shown, a latch 150 is provided on the bearing surface 111 of the body 110. The latch 150 is used to fix an item placed on the bearing surface 111 of the body 110 onto the body 110. Preferably, the latch 150 is provided on the edge of the upper surface of the body 110, and the number of latches 150 is not limited and can be set according to specific needs.

[0062] like Figure 16 and Figure 17As shown, the logistics cart 10 provided in this application also includes a push rod 300 for users to hold and conveniently pull or push the logistics cart 10 to move. To facilitate the storage of the logistics cart 10, the push rod 300 is 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 position... Figure 16 The folding state shown or Figure 17 The unfolded state shown is as follows: 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, making the overall size of the logistics cart 10 smaller; as Figure 17 As shown, when the push rod 300 is in the extended state, the push rod 300 forms a certain angle (e.g., 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 an oblong hole 302 is provided on the connecting end 301. The hinge shaft 114 passes through the oblong hole 302, so that the push rod 300 can be movably connected to the hinge shaft 114 through the oblong hole 302. Figure 18 As shown, when the hinge shaft 114 abuts against the upper end wall of the oblong 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 the unfolded state; as 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 bearing surface 111 and in a folded state.

[0063] Thus, when it is necessary to unfold the push rod 300, simply rotate the push rod 300 so that it is perpendicular to the bearing surface 111, and then insert the connecting end 301 of the push rod 300 downward into the groove 113. Gravity will cause the upper wall of the waist-shaped hole 302 of the connecting end 301 to 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. Therefore, 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 body 110, thereby completing the unfolding action. When the push rod 300 needs to be folded, it is lifted upwards, causing the lower wall of the oblong hole 302 at the connecting end 301 to abut against 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 towards the body 110, thus making the push rod 300 parallel to the bearing surface 111 and in a folded state. Through the above design, the push rod 300 can be quickly unfolded or folded in simple steps, eliminating a series of cumbersome steps and improving the convenience of folding the push rod 300.

[0064] like Figure 20 As shown, this application also provides a workbench 40, which also includes a support device 100. It is understood that the support device 100 provided in this application is not limited to use in the logistics cart 10 and workbench 40, but can also be used in any structure that needs to support goods. The workbench 40 differs from the logistics cart 10 in that the support device 100 includes several support legs 41, but does not have casters 123. For example... Figure 21 As shown, the number of support legs 41 corresponds to the number of support members 122 in the bearing 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 leg 41 can also be opened, thereby allowing the bearing device 100 to be supported on the ground by the support legs 41. The structure of the bearing device 100 is exactly the same as that described in the above embodiment, and will not be described again here.

[0065] As can be seen, through the design of the above structure, whether the support device 100 is used for the logistics cart 10 or the workbench 40, the operator can control the drive handle 1411 to unfold or fold the support member 122; and while the support member 122 is unfolded or folded, the support mechanism 120 can be locked or unlocked with the same hand. The operator does not need to perform the operation in multiple steps, which greatly facilitates the operation and improves the user experience.

[0066] The technical features of the embodiments described above can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combination of these technical features does not contradict each other, it should be considered within the scope of this specification. The embodiments described above only illustrate several implementation methods of this application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A supporting device, characterized in that, include: ontology; Support mechanisms are installed on opposite sides of the bottom of the main body. Each support mechanism includes a connecting shaft and several support members disposed on the connecting shaft. The connecting shaft can drive the support members to rotate together around the central axis of the connecting shaft so that the support members are in the working position or the storage position. The drive mechanism includes a drive component and a steering component. The drive component is connected to the coupling shafts via the steering component and can drive the two coupling shafts to move in opposite directions.

2. The bearing device according to claim 1, characterized in that, The drive assembly includes a drive rod, which is connected to the two connecting shafts via the steering assembly, and the drive rod is capable of controlling the two connecting shafts to rotate simultaneously.

3. The bearing device according to claim 2, characterized in that, The drive rod is located between the two connecting shafts, and both ends of the drive rod are respectively connected to the corresponding two connecting shafts through steering components. The central axis of the drive rod is perpendicular to the central axis of the connecting shaft.

4. The bearing device according to claim 2, characterized in that, The steering assembly includes a first transmission gear sleeved on the connecting shaft and a second transmission gear sleeved on the drive rod. The first transmission gear and the second transmission gear mesh with each other for transmission. The drive rod can rotate around its own central axis to drive the connecting shaft to rotate synchronously and drive the support to switch between the working position and the storage position.

5. The bearing device according to claim 2, characterized in that, The drive assembly also includes a drive handle, which is connected to the drive rod and can drive the drive rod to rotate.

6. The bearing device according to claim 1, characterized in that, The bearing device further includes a locking mechanism, which includes a locking component and an operating component connected to the locking component, the operating component being able to control the movement of the locking component; When the locking component interferes with the support member, the locking component is in a locked state; when the locking component disengages from the support member, the locking component is in an unlocked state.

7. The bearing device according to claim 6, characterized in that, The drive component includes a drive handle, which can control the support member to be in the working position or the storage position; the operation component includes an operation handle, which can control the locking component to switch from the locked state to the unlocked state. The drive handle and the operating handle can simultaneously control the support member and the locking component.

8. The bearing device according to claim 7, characterized in that, The operating handle is positioned close to the drive handle, allowing simultaneous operation of both the drive handle and the operating handle with one hand; when the drive handle controls the support member to be in the working position or the storage position, the locking component is in the locked state. When the drive handle controls the support to switch between the working position and the storage position, the locking component is in the unlocked state.

9. A logistics vehicle, characterized in that, The logistics trolley includes a carrying device as described in any one of claims 1-8, and the carrying device further includes a plurality of rollers mounted on the support member.

10. A workbench, characterized in that, The workbench includes a support device as described in any one of claims 1-8, and the support device further includes a plurality of support legs mounted on the support member.

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