Carrying tool

Abstract

The utility model discloses a carrying tool which comprises a base used for bearing a target device. The connecting piece is hinged to the base through a first connecting position; the trundles are installed on the first surfaces of the connecting pieces, and at least parts of the trundles are located below the base; the distance r between the central rotating shaft of the trundle and the first connecting position is greater than zero; when the carrying tool is in the first state, the first surface of the connecting piece faces the rear portion of the base. The distance between a central rotating shaft of each trundle and the base is h1; when the carrying tool is in the second state, the first surface of the connecting piece faces downwards; the distance between the central rotating shaft of the caster and the base is h2, and h2 is larger than h1. By means of the carrying tool, the cage trolley can be moved in an auxiliary mode through the carrying tool under the condition that trundles are omitted, and potential hazards caused by the fact that the trundles are difficult to fix and accidentally move are avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of logistics transportation, in particular to a carrying tool. BACKGROUND

[0002] The cage trolley is a handcart or a transport tool with a fence or a mesh structure, which is used for safe carrying and storage of various types of goods. Generally, the cage trolley is provided with casters at the bottom for easy movement. However, during the use of the cage trolley, the height of the casters affects the loading rate of the vehicle, and the difficulty in fixing the casters easily causes the displacement of the cage trolley, which easily causes the damage of the goods in the cage trolley, and even the damage of the cage trolley itself and the nearby objects. CONTENT OF THE UTILITY MODEL

[0003] Therefore, the purpose of the present application is to provide a carrying tool, which can assist the movement of the cage trolley without casters through the carrying tool, so as to avoid the potential hidden dangers caused by the difficulty in fixing the casters and the accidental displacement of the cage trolley.

[0004] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0005] A carrying tool, comprising:

[0006] a base for supporting a target device;

[0007] a connecting piece hinged to the base through a first connecting position;

[0008] a caster installed on a first surface of the connecting piece and at least partially located below the base; the distance r between the center rotating shaft of the caster and the first connecting position is greater than zero;

[0009] When the carrying tool is in a first state, the first surface of the connecting piece faces the rear of the base; the distance h1 between the center rotating shaft of the caster and the base;

[0010] When the carrying tool is in a second state, the first surface of the connecting piece faces downward; the distance h2 between the center rotating shaft of the caster and the base is h2> h1.

[0011] Optionally, in the above-mentioned carrying tool, during the conversion of the carrying tool from the first state to the second state, the angle of rotation of the connecting piece around the first connecting position is any value in the range of 30° to 90°.

[0012] Optionally, in the above-mentioned carrying tool, the connecting piece and the caster are both provided with a plurality of connecting pieces, and each connecting piece is respectively provided with at least one caster;

[0013] At least one group of the connecting piece and the caster is located at the front of the carrying tool.

[0014] At least one set of the connecting members and the casters are located at the rear of the carrying tool.

[0015] Optionally, the carrying tool further comprises a frame, which is located below the base.

[0016] Each of the connecting members is hingedly connected to the base through a first connecting position and hingedly connected to the frame through a second connecting position; the distance a between the first connecting position and the second connecting position is greater than zero.

[0017] Optionally, the carrying tool further comprises an operating arm for driving the connecting members to rotate around the first connecting position with the casters.

[0018] Optionally, the carrying tool further comprises an operating arm for driving the connecting members to rotate around the first connecting position with the casters.

[0019] Optionally, the distance b between the first connecting position and the rear end of the base is greater than zero.

[0020] During the transition of the carrying tool from the first state to the second state, the operating arm abuts against the rear end of the base.

[0021] Optionally, the connecting member is provided with a connecting portion for mounting the operating arm, and the connecting portion comprises a sleeve, a counterbore or a cylindrical protrusion capable of being inserted into the operating arm.

[0022] Optionally, the frame is provided with a receiving space capable of receiving the connecting members and the casters.

[0023] Optionally, when the carrying tool is in the second state: the second surface of the connecting member located on the opposite side of the first surface abuts against the first crossbeam of the base; and / or the frame is located below the base and at least partially abuts against the base.

[0024] Optionally, the rear end of the base is provided with an upwardly protruding baffle.

[0025] Optionally, the rear end of the base is provided with a connecting ring.

[0026] Optionally, the casters and the connecting members are located within the projection area of the base in the vertical direction.

[0027] From the above technical solution can be seen, the carrying tool provided by the present application only needs to rotate the connecting piece to control the caster to adjust from the storage state (i.e. the first state) to the working state (i.e. the second state), or adjust from the working state to the storage state, without the need to set a power device, not only simple structure, convenient operation, lower procurement cost, but also lighter weight, smaller size, can drill into the bottom space of the foot type cage car (empty car or full load) with narrow height, replace the caster with the supporting leg, top up and provide the moving function. In addition, since the carrying tool can be applied to the foot type cage car without caster, the cage car saves the cost of caster procurement and maintenance, and can avoid potential hidden dangers caused by difficult caster fixing and accidental displacement. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0029] Figure 1 A structural schematic diagram of a new foot type cage car provided by the embodiments of the present application.

[0030] Figure 2 A side view of a carrying tool provided by the embodiments of the present application.

[0031] Figure 3 A structural schematic diagram of a local area in Figure 2

[0032] Figure 4 A structural schematic diagram of a connecting piece provided by the embodiments of the present application.

[0033] Figure 5 A structural schematic diagram of a local area in Figure 6 A perspective view of a carrying tool provided by the embodiments of the present application at different angles.

[0034] Figure 7 A top view of a carrying tool provided by the embodiments of the present application.

[0035] Wherein:

[0036] 1-base, 2-frame, 3-connecting piece, 4-caster, 5-operation arm,

[0037] 11-baffle, 12-connecting ring,

[0038] 31-first surface, 32-second surface, 33-connection part,

[0039] ​101 - first longitudinal beam, 102 - first cross beam, 103 - second longitudinal beam,

[0040] 201 - third longitudinal beam, 202 - second cross beam, 203 - fourth longitudinal beam,

[0041] 301 - first connecting site, 302 - second connecting site, 303 - third connecting site,

[0042] 501 - first arm, 502 - second arm, 503 - handle. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0044] Please refer to Figure 1 , in order to avoid the problem that the height of the caster affects the loading rate of the cage and the difficulty of fixing the caster, the present application provides a cage with a new structure, i.e. a standing foot type cage. The cage cancels the bottom caster and sets a supporting leg 01 at each of the four corners of the bottom of the cage. In order to make the cage have a high loading rate, the height h of the supporting leg 01 is generally small, i.e. the space height of the bottom of the cage is low. Therefore, when the cage needs to be moved, a transport tool capable of lifting the cage and moving it is needed, such as a tortoise car with a lifting device and four universal wheels. However, the traditional tortoise car not only has a large vehicle body structure size, but also has a high cost and a large volume of the hydraulic system or motor in the lifting device, which is difficult to cope with the new standing foot type cage with a narrow bottom space height.

[0045] Based on this, the embodiments of the present application provide a carrying tool. Please refer to Figures 2 to 7 , the carrying tool comprises a base 1, a connecting piece 3 and a caster 4, wherein: the base 1 is used for supporting a target device; the connecting piece 3 is hinged to the base 1 through a first connecting site 301; the caster 4 is installed on a first surface 31 of the connecting piece 3 (i.e. the bottom mounting surface of the connecting piece 3), and at least part of the caster 4 is located below the base 1, so that the cage can be moved through the caster 4 in the storage state and the use state; the distance r between the center rotating shaft of the caster 4 and the first connecting site 301 is greater than zero, and the distance r is also the rotating radius of the connecting piece 3 with the caster 4 rotating around the base 1, so that the caster 4 can be rotated downward to extend below the base 1.

[0046] Please refer to Figure 2 and Figure 3When the carrying tool is in the first state, the first surface 31 of the connecting piece 3 faces the rear of the base 1, at this time, both the connecting piece 3 and the caster 4 are in the storage state, the height distance between the caster 4 and the base 1 is small and at least partially stored in the frame 2, assuming that the distance between the center shaft of the caster 4 and the base 1 at this time is h1; when the carrying tool is in the second state, the first surface 31 of the connecting piece 3 faces downward, the caster 4 is located below the connecting piece 3 and is in the working state, and can roll along the ground; assuming that the distance between the center shaft of the caster 4 and the base 1 at this time is h2, then h2>h1. See Figure 2 and Figure 3 When the carrying tool is in the second state, most of the area or the whole of each caster 4 is located below the frame 2, which can raise the horizontal height of the base 1 and the target device (for example, an empty cage or a cage loaded with goods) above it, so as to achieve the purpose of moving after lifting the target device. Generally, during the process of converting the carrying tool from the first state to the second state, the angle of the connecting piece 3 rotating around the first connecting position 301 is any value in the range of 30° to 90°, such as 90°, 80°, 70°, 60°, 45°, etc. It should be noted that the first surface 31 of the connecting piece 3 facing the rear of the base 1 specifically means that the first surface 31 of the connecting piece 3 is perpendicular to the horizontal plane where the base 1 is located (i.e., the first surface 31 is a vertical surface); or, as shown in Figure 2 , the first surface 31 of the connecting piece 3 is slightly inclined downward by a certain angle in the clockwise direction relative to the vertical surface, and the angle is less than 45°. Moreover, it should be noted that the first surface 31 of the connecting piece 3 facing downward specifically means that the first surface 31 of the connecting piece 3 is parallel to the horizontal plane where the base 1 is located (i.e., the first surface 31 is a horizontal surface); or, the first surface 31 of the connecting piece 3 is slightly inclined backward by a certain angle in the clockwise direction relative to the horizontal surface, and the angle is less than 45°, so as to keep the connecting piece 3 and the caster 4 in the second state.

[0047] As can be seen, when using the carrying tool, the caster 4 can be adjusted from the storage state to the working state, or from the working state to the storage state, by rotating the connecting piece 3, without the need for a power device. Not only is the structure simple, the operation convenient, and the procurement cost low, but also the weight is lighter and the volume is smaller, which can drill into the bottom space of the new type of foot standing cage (empty or full load) shown in Figure 1 , whose bottom space is narrow and whose legs replace the casters, to lift it and provide a moving function. Since the carrying tool can be applied to the new type of foot standing cage shown in Figure 1 , the cage saves the cost of purchasing and maintaining the casters, and can avoid potential risks caused by the difficulty of fixing the casters and accidental displacement.

[0048] In the specific implementation, the carrying tool further comprises an operating arm 5, which is used to drive the connecting piece 3 to rotate around the first connecting position 301, so as to convert the carrying tool from the first state to the second state. For example, please refer to Figure 3 and Figure 5 In some embodiments, the operating arm 5 is connected with the connecting piece 3, the operating arm 5 and the caster 4 are respectively located on two sides of the connecting piece 3, and the length direction of the operating arm 5 is perpendicular to the first surface 31 of the connecting piece 3. Since the length of the operating arm 5 is much greater than the distance r between the central rotating shaft of the caster 4 and the first connecting position 301, the torque can be amplified by the lever principle, and the weight on the base 1 can be easily lifted, and the height difference between the base 1 and the connecting piece 3 and the caster 4 is used to realize the weight lifting.

[0049] However, it is not limited to this, and in other embodiments, the carrying tool itself does not have the operating arm 5, and other rod-shaped structures are selected as the operating arm on site for use. At this time, only a through hole capable of inserting the rod-shaped structure needs to be arranged on the connecting piece 3. Alternatively, in other embodiments, a power device (such as a motor or a telescopic air cylinder or an oil cylinder) can be arranged in the carrying tool, which is used to drive the connecting piece 3 to rotate, so as to realize the automatic storage or lifting of the target device such as the cage vehicle without manual operation.

[0050] The carrying tool with the operating arm 5 will be taken as an example for specific description. Please refer to Figure 2 and Figure 3 The connecting piece 3 and the base 1 are hinged at the first connecting position 301, the distance b between the first connecting position 301 and the rear end of the base 1 is greater than zero, and the operating arm 5 abuts against the rear end of the base 1 during the conversion of the carrying tool from the first state to the second state. Thus, a lever structure is formed, at this time, the rear end of the base 1 is the fulcrum, the distance between the handle 503 of the operating arm 5 and the fulcrum is much greater than the distance between the contact point of the caster 4 and the fulcrum, so that a relatively small force F can be used to lift the base 1 and the target device with heavy weight carried by the base 1, so that the supporting legs 01 at the bottom of the cage vehicle are lifted off the ground, and the movement of the cage vehicle is facilitated.

[0051] It should be noted that, generally, when the carrying tool is in the second state, the caster 4 is relatively closer to the staff relative to the first connecting position 301, and at this time, the supporting point of the caster 4 on the ground is relatively farther away from the center of the base 1 relative to the first connecting position 301, so as to facilitate the caster 4 to keep the working state and avoid the caster 4 from being accidentally rotated to the storage state. However, it is not limited to this, and in other embodiments, the caster 4 can be located directly below the first connecting position 301, or the caster 4 can be relatively closer to the center of the base 1 relative to the first connecting position 301, at this time, the connecting piece 3 or the operating arm 5 can be locked by other means.

[0052] In some embodiments, the rear end of the carrying tool is provided with connecting members 3 and casters 4 on the left and right sides of the bottom; the operating arm 5 comprises first and second arm rods 501 and 502 arranged in parallel, and a handle 503 located between the first and second arm rods 501 and 502, and the ends of the first and second arm rods 501 and 502 away from the handle 503 are fixedly connected with one connecting member 3 respectively.

[0053] When it is necessary to move heavy objects by using the carrying tool, the operation process of the cage vehicle mainly includes: placing the casters 4 in the carrying tool down, and the carrying tool is in the first state, at this time, the base 1 is lower than the height of the bottom surface of the cage vehicle, then pushing the carrying tool into the bottom surface of the cage vehicle, and the casters 4 are located between the supporting legs 01;

[0054] Lifting the handle 503 of the operating arm 5 to vertically raise the casters 4 by the lever action, i.e. switching the carrying tool from the first state to the second state, and switching the casters 4 from the storage state to the working state, the casters 4 are rotated out, so as to lift the base 1 and the cage vehicle supported thereby, and the supporting legs 01 of the cage vehicle are away from the ground;

[0055] Locking the operating arm 5, for example, hanging the operating arm 5 on the side wall of the cage vehicle, so as to prevent the cage vehicle from falling during transportation, and the locking process of the operating arm 5 can be realized by the lever structure formed by the operating arm 5, the connecting member 3, the caster 4 and the base 1, or a structure (such as an elastic buckle or a hook) capable of detachably connecting with the operating arm 5 can be arranged on the base 1 and / or the connecting member 3.

[0056] Please refer to Figure 4In some embodiments, the bottom of the carrying tool is provided with a plurality of connecting members 3 and a plurality of casters 4, and each connecting member 3 is respectively provided with at least one caster 4. At least one set of connecting members 3 and casters 4 is located at the front of the carrying tool, and at least one set of connecting members 3 and casters 4 is located at the rear of the carrying tool. For example, in some embodiments, four sets of casters 4 or more sets of casters 4 are arranged circumferentially on the bottom of the carrying tool. Alternatively, in other embodiments, three sets of casters 4 can also be arranged on the bottom of the carrying tool, at this time, only one set of casters 4 is arranged at the front of the carrying tool, and one set of casters 4 is arranged on the both sides of the longitudinal center line at the rear of the carrying tool; or, only one set of casters 4 is arranged at the rear of the carrying tool, and one set of casters 4 is arranged on the both sides of the longitudinal center line at the front of the carrying tool. Alternatively, in other embodiments, one set of casters 4 can also be arranged at the front and rear of the carrying tool, at this time, the casters 4 located at the front of the carrying tool can be coaxially arranged side by side with multiple casters 4, and the axial width of the casters 4 is large, which is similar to the structure of the roller, so that only one caster 4 can be arranged, and the casters 4 located at the rear of the carrying tool can be coaxially arranged side by side with multiple casters 4, and the axial width of the casters 4 is large, which is similar to the structure of the roller, so that only one caster 4 can be arranged. It should be noted that each set of casters 4 can include one caster 4, or two or more casters 4 arranged coaxially side by side.

[0057] Please refer to Figure 2 、 Figure 5 and Figure 6 In some embodiments, the carrying tool is further provided with a frame 2, which is located below the base 1 and is provided with a containing space capable of containing the connecting members 3 and the casters 4. The plurality of connecting members 3 are respectively hinged to the base 1 through first connecting positions 301 and are respectively hinged to the frame 2 through second connecting positions 302, and the distance a between the first connecting position 301 and the second connecting position 302 is greater than zero. Thus, the frame 2 can control the synchronous action of the plurality of connecting members 3 and the plurality of casters 4. At this time, the base 1, the frame 2, and the front and rear connecting members 3 form a parallelogram j shown in Figure 2 The unstable characteristic of the parallelogram j enables the connecting member 3 to rotate with the caster 4 relative to the base 1, and the distance between the frame 2 and the base 1 is adjustable, so that the base 1 can enter the narrow space at the bottom of the cage car, and the base 1 can be lifted by rotating the connecting member 3, and the cage car can be moved by the caster 4.

[0058] In some embodiments, the connecting member 3 is provided with a connecting portion 33 for mounting the operating arm 5, and the connecting portion 33 can be a sleeve, a counterbore or a cylindrical protrusion capable of being inserted into the operating arm 5. Thus, the operating arm 5 can be conveniently mounted on the connecting member 3, and even can be detachably connected, so as to save the occupied space when the carrying tool is in the storage state.

[0059] In some embodiments, when the carrying tool is in the second state: the second surface 32 of the connecting piece 3 is in abutment with the first cross beam 102 of the base 1, which can be the top surface of the connecting piece 3 located opposite the first surface 31; and / or, the frame body 2 is located below the base 1 and in abutment with at least a partial region thereof. Thus, the connecting piece 3 can be limited by the structure of the base itself, avoiding excessive rotation angle and ensuring normal rolling of the caster 4.

[0060] In some embodiments, the caster 4 and the connecting piece 3 are located within the projection area of the base 1 in the vertical direction, so as to avoid the caster 4 protruding outside the base 1 and occupying excess space, and ensure that the overall volume of the carrying tool is relatively small. However, this is not limited thereto, and in other embodiments, the caster 4 and the connecting piece 3 can also be arranged outside the base 1, which can facilitate disassembly and maintenance of the caster 4 and the connecting piece 3, and the present application does not make specific limitations thereto.

[0061] Further, referring to Figure 5 and Figure 6 In some embodiments, the rear end of the base 1 is provided with an upwardly protruding baffle 11, which can limit the cage and avoid backward sliding of the cage. In addition, in some embodiments, the rear end of the base 1 is also provided with a connecting ring 12, which facilitates connection of a rope or a hook, etc., to meet the working requirements of different scenes.

[0062] Referring to Figure 7 In some embodiments, the base 1 is a frame structure, specifically including a first longitudinal beam 101, a first cross beam 102, and a second longitudinal beam 103. The first longitudinal beam 101 is located at the longitudinal side of the base 1; the first cross beam 102 is located at the transverse side of the base 1 and connected with the first longitudinal beam 101; the second longitudinal beam 103 is parallel to the first longitudinal beam 101 and connected with the first cross beam 102; and the upper left and right ends of the connecting piece 3 are respectively hinged to the first longitudinal beam 101 and the second longitudinal beam 103.

[0063] Similarly, the frame body 2 is a frame structure, specifically including a third longitudinal beam 201, a fourth longitudinal beam 203, and a second cross beam 202. The third longitudinal beam 201 is located at the longitudinal side of the frame body 2, and the fourth longitudinal beam 203 is located inside the third longitudinal beam 201 and parallel thereto, both the third longitudinal beam 201 and the fourth longitudinal beam 203 being connected with the second cross beam 202; the lower left and right ends of the connecting piece 3 are respectively hinged to the third longitudinal beam 201 and the fourth longitudinal beam 203; and the third longitudinal beam 201 and the fourth longitudinal beam 203 form a containing space capable of containing the connecting piece 3 and the caster 4.

[0064] It should be noted that the left, right, horizontal, vertical in the present application are based on the position when the staff holds the handle 503, and the vertical side in the above is specifically the left and right side in the base 1 which extends along the front and back direction. The front and back in the present application is based on the visual direction when the staff holds the handle 503, and the horizontal side in the above is specifically the left and right side in the base 1 which extends along the left and right direction.

[0065] Finally, it should be noted that in the present document, the relational terms such as first and second and the like can merely be used to distinguish one entity or action from another, without necessarily requiring or implying any such actual relationship or order between or among the entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0066] The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments, and the same or similar parts between the embodiments can be referred to each other.

[0067] The above description of disclosed embodiments enables a person skilled in the art to implement or use the present application. Various modifications to the embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A handling tool, characterized in that, include: The base (1) is used to support the target device; The connector (3) is hinged to the base (1) via the first connection position (301); Caster (4) is mounted on the first surface (31) of the connector (3) and is at least partially located below the base (1); the distance r between the central pivot of the caster (4) and the first connection position (301) is greater than zero; When the handling tool is in the first state, the first surface (31) of the connector (3) faces the rear of the base (1); the distance between the central pivot of the caster (4) and the base (1) is h1; When the handling tool is in the second state, the first surface (31) of the connector (3) faces downward; the distance between the central pivot of the caster (4) and the base (1) is h2, h2 > h1.

2. The handling tool according to claim 1, characterized in that, During the process of the transport tool transitioning from the first state to the second state, the angle at which the connector (3) rotates around the first connection position (301) is any value within the range of 30° to 90°.

3. The handling tool according to claim 1, characterized in that, Multiple connectors (3) and casters (4) are provided, and each connector (3) is equipped with at least one caster (4); At least one set of the connectors (3) and the casters (4) are located at the front of the handling tool; At least one set of the connectors (3) and the casters (4) are located at the rear of the handling tool.

4. The handling tool according to claim 3, characterized in that, It also includes a frame (2) located below the base (1); Each of the connectors (3) is hinged to the base (1) via a first connection position (301) and to the frame (2) via a second connection position (302); the distance a between the first connection position (301) and the second connection position (302) is greater than zero.

5. The handling tool according to claim 1, characterized in that, It also includes an operating arm (5) for driving the connector (3) to rotate around the first connection position (301) with the caster (4).

6. The handling tool according to claim 5, characterized in that, The operating arm (5) is connected to the connector (3). The operating arm (5) and the caster (4) are located on both sides of the connector (3), and the length direction of the operating arm (5) is perpendicular to the first surface (31) of the connector (3).

7. The handling tool according to claim 6, characterized in that, The distance b between the first connection position (301) and the rear end of the base (1) is greater than zero; During the process of the handling tool changing from the first state to the second state, the operating arm (5) abuts against the rear end of the base (1).

8. The handling tool according to claim 5, characterized in that, The connector (3) is provided with a connecting part (33) for mounting the operating arm (5), the connecting part (33) including a sleeve, countersunk hole or cylindrical protrusion that can be inserted into the operating arm (5).

9. The handling tool according to claim 4, characterized in that, The frame (2) is provided with a space for accommodating the connector (3) and the caster (4).

10. The handling tool according to claim 4, characterized in that, When the transport tool is in the second state: the second surface (32) of the connector (3) located on the opposite side of the first surface (31) abuts against the first crossbeam (102) of the base (1); and / or, the frame (2) is located below the base (1) and abuts against at least a portion of it; And / or, the rear end of the base (1) is provided with an upwardly protruding baffle (11). ； And / or, a connecting ring (12) is provided at the rear end of the base (1). ； And / or, the caster (4) and the connector (3) are located within the vertical projection area of ​​the base (1).

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