CN213057907U - Loading frame - Google Patents

Abstract

The embodiment of the application provides a loading frame. The loading frame comprises a bottom plate, a first extending piece and a second extending piece, wherein the first extending piece and the second extending piece are assembled on the bottom plate. The first extension piece and the second extension piece can reciprocate relative to the bottom plate so as to adjust the size of the loading frame. The carrier further includes a locking assembly for preventing movement of the first elongate member relative to the base plate. The carrier is adjustable in size to carry different sized articles or more.

Description

Loading frame

Technical Field

The application relates to the field of article transportation, in particular to a loading frame.

Background

In a commodity distribution scene, the loading space of the existing two-wheel distribution vehicle is small, so that the single loading quantity and the variety of a loader are limited, and the efficiency and the cost of single distribution are influenced. A carrier may be placed in the rear seat of the dispensing cart to carry more items. The size of the related loading frame is not adjustable, and only a box with a fixed size can be loaded, so that the use is inconvenient.

SUMMERY OF THE UTILITY MODEL

The application provides a loading frame with adjustable size.

The application embodiment provides a loading frame, which comprises a bottom plate, a first extending piece and a second extending piece, wherein the first extending piece and the second extending piece are assembled on the bottom plate, the first extending piece and the second extending piece can move in a reciprocating mode relative to the bottom plate so as to adjust the size of the loading frame, and the loading frame further comprises a locking assembly used for preventing the first extending piece from moving relative to the bottom plate.

Further, the first extension member may reciprocate in a first direction, and the second extension member may reciprocate in a second direction, the first direction and the second direction facing in opposite directions.

Further, the bottom plate is provided with a plurality of penetrating assembling holes.

Furthermore, the first extension member includes a third support bar, a pair of first support bars and a pair of second support bars, the pair of first support bars are assembled on the bottom plate, the pair of second support bars are respectively assembled on the first support bar and the third support bar, the first support bar can reciprocate relative to the bottom plate, and the second support bar can reciprocate relative to the first support bar.

Furthermore, the second extension member includes a third support bar, a pair of first support bars and a pair of second support bars, the pair of first support bars are assembled on the bottom plate, the pair of second support bars are respectively assembled on the first support bar and the third support bar, the first support bar can reciprocate relative to the bottom plate, and the second support bar can reciprocate relative to the first support bar.

Furthermore, the loading frame comprises a binding belt limited on the third supporting rod of the first extending piece and the third supporting rod of the second extending piece so as to fix articles.

Furthermore, the locking assembly comprises a protruding part and a limiting hole, the protruding part is arranged on the bottom plate, the limiting hole is arranged on the first supporting rod, and the protruding part can move relative to the bottom plate to be contained in the limiting hole so as to prevent the first supporting rod from moving.

Furthermore, the locking assembly comprises a protruding part and a limiting groove, the protruding part is arranged on the bottom plate, the limiting groove is arranged on the third supporting rod, and the protruding part can move relative to the bottom plate to be contained in the limiting groove so as to prevent the third supporting rod from moving.

Furthermore, the bottom plate is provided with a pair of accommodating parts, and the pair of first supporting rods can be respectively retracted into the pair of accommodating parts.

Further, the third support rod can rotate between a horizontal position and a vertical position relative to the second support rod.

Further, the loading frame comprises a limiting pin assembled on the third support rod and the second support rod, and the limiting pin is used for locking the third support rod to a vertical position.

Furthermore, the second support rod is provided with a through hole and a storage part which are communicated with each other, the third support rod is provided with an assembling part, and the assembling part is contained in the storage part.

Further, the assembling portion is provided with a first hole and a second hole, the first supporting rod comprises a blocking portion located below the assembling portion, the blocking portion is provided with a through hole, when the third supporting rod is located at a horizontal position, the limiting pin is located in the second hole, when the third supporting rod is located at a vertical position, the limiting pin is located in the first hole, and at least part of the end portion of the assembling portion is contained in the through hole.

Further, the third support rod comprises a handheld portion and a pair of connecting portions extending from two ends of the handheld portion, and the assembling portions are arranged in a pair and connected to the pair of connecting portions respectively.

Further, the loading frame comprises a third extending piece assembled on the bottom plate, the third extending piece moves back and forth along a third direction, and the third direction is perpendicular to the first direction and the second direction.

Further, the loading frame comprises a tubular member fixed to the bottom plate, and the third extension member part is accommodated in a space surrounded by the tubular member and can move back and forth along the tubular member.

Furthermore, the third extending member includes a third supporting rod, a pair of first supporting rods and a pair of second supporting rods, the pair of first supporting rods are assembled to the tubular member, the pair of second supporting rods are respectively assembled to the first supporting rod and the third supporting rod, the first supporting rod can reciprocate relative to the base plate, and the second supporting rod can reciprocate relative to the first supporting rod.

Further, the first extending piece comprises a main body, and a first abutting piece and a second abutting piece which are assembled on the main body, the main body is assembled on the bottom plate and can reciprocate relative to the bottom plate, and the first abutting piece and the second abutting piece can reciprocate relative to the main body.

Further, the main body comprises a base portion, a first assembly portion and a second assembly portion which are connected to the base portion, a third assembly portion and a fourth assembly portion, the bottom plate comprises a first tubular portion and a second tubular portion, the first assembly portion is assembled in a space surrounded by the first tubular portion, the second assembly portion is assembled in a space surrounded by the second tubular portion, the first abutting portion is assembled in the third assembly portion, and the second abutting portion is assembled in the fourth assembly portion.

Further, the first tubular portion includes a first receiving hole, the first assembling portion includes a plurality of second receiving holes, and the loading frame includes a locking member assembled into the first receiving hole and the second receiving hole, the locking member being configured to prevent the first assembling portion from moving.

Further, the second tubular portion includes a first receiving hole, the second assembling portion includes a plurality of second receiving holes, and the loading frame includes a locking member assembled into the first receiving hole and the second receiving hole, the locking member being configured to prevent the second assembling portion from moving.

Further, the second blocking part comprises a blocking part and a limiting part extending from the blocking part, one of the limiting part and the fourth assembly part is provided with an accommodating space and a hole communicated with the accommodating space, the other one of the limiting part and the fourth assembly part is assembled into the accommodating space and provided with a limiting block, and when the limiting block is accommodated in the hole, the limiting part is prevented from moving relative to the fourth assembly part.

Furthermore, the resisting part is in a frame shape and is vertical to the limiting part.

Further, the first blocking part comprises a blocking part and a limiting part extending from the blocking part, one of the limiting part and the third assembling part is provided with an accommodating space and a hole communicated with the accommodating space, the other one of the limiting part and the third assembling part is assembled into the accommodating space and provided with a limiting block, and when the limiting block is accommodated in the hole, the limiting part is prevented from moving relative to the third assembling part.

Further, the second extension piece comprises a main body and a first stop piece and a second stop piece assembled on the main body, the main body is assembled on the bottom plate and can reciprocate relative to the bottom plate, and the first stop piece and the second stop piece can reciprocate relative to the main body.

According to the technical scheme, the loading frame comprises the bottom plate, and the first extension piece and the second extension piece which are assembled on the bottom plate, wherein the first extension piece and the second extension piece can reciprocate relative to the bottom plate so as to adjust the size of the loading frame, so that articles with different sizes can be loaded or more articles can be loaded at the same time, and the use convenience is improved.

Drawings

Fig. 1 shows a schematic view of a loading bay according to an exemplary embodiment of the present application, wherein the first, second and third elongate members are in a pulled-out position.

Figure 2 shows a schematic partial cross-sectional view of the carrier of figure 1 with the first and second elongate members in a retracted state.

Fig. 3 shows a schematic view of the first support bar of the loading bay shown in fig. 1.

Fig. 4 shows a schematic view of the second support bar of the loading frame shown in fig. 1.

Fig. 5 shows a schematic view of a third support bar of the loading frame shown in fig. 1.

Figure 6 shows a schematic partial cross-sectional view of the carrier of figure 1.

Fig. 7 is similar to fig. 6, wherein the third support bar is in an unlocked state in a vertical position.

Fig. 8 is a view similar to fig. 7, wherein the third support bar is in a locked state in a vertical position.

Figure 9 illustrates a schematic view of a carrier according to another embodiment of the present application, wherein the first elongate member and the second elongate member are in a retracted state.

Figure 10 illustrates a schematic view of a carrier according to another embodiment of the present application, wherein the first elongate member and the second elongate member are in tension.

Fig. 11 shows a schematic view of the locking member of the carrier of fig. 10 before assembly.

Fig. 12 shows a schematic view of the carrier of fig. 9 before assembly of the second abutment.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present specification. Rather, they are merely examples of devices consistent with certain aspects of the present description, as detailed in the appended claims.

The terminology used in the description herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the description. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

It should be understood that although the terms first, second, third, etc. may be used herein to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, the first information may also be referred to as second information, and similarly, the second information may also be referred to as first information, without departing from the scope of the present specification. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.

The carrier according to the embodiment of the present invention will be described in detail below with reference to the accompanying drawings. In the following embodiments, features of the embodiments may be combined with each other without conflict.

Referring to fig. 1 to 2, a loading frame according to an exemplary embodiment of the present disclosure includes a base plate 1, and a first extension member 2, a second extension member 3, and a third extension member 4 assembled to the base plate 1. The first extension piece 2, the second extension piece 3 and the third extension piece 4 can be pulled out in a direction away from the bottom plate 1 or retracted in a direction close to the bottom plate 1, so that the size of the loading frame can be adjusted according to different sizes of articles or the number of the articles, and the use convenience is improved. The loading frame comprises a locking component for locking the first extending member 2 and/or the second extending member 3 and/or the third extending member 4 to different positions, so that the first extending member 2 can be effectively fixed when being stretched or retracted to different positions, and the stability of the loading frame after loading articles is enhanced. The first elongate member 2 is reciprocally movable in a first direction and the second elongate member 3 is reciprocally movable in a second direction, the first direction being opposite to the second direction. The third extending member 4 can move back and forth along a third direction, and the third direction is perpendicular to the first direction and the second direction.

The carrier may selectively assemble one or more of the first 2, second 3 and third 4 elongate members. The carrier may also optionally be assembled with a fourth elongate member (not shown). The fourth elongate member is of the same construction as the third elongate member 4. The fourth elongate member is reciprocally movable in a fourth direction, the fourth direction being opposite the third direction. The loading frame of the exemplary embodiment of the present application may be applied to various scenes, for example, may be fixed to a rear frame of a two-wheeled transport vehicle, such as an electric vehicle or a motorcycle, to load an article; can also be fixed on the roof of the motor vehicle to load articles; or placed in a motor vehicle to carry items. The application is not limited to the application scenario of the loading frame.

The base plate 1 is of a flat plate structure to support an article. The base plate 1 includes an upper surface 10, a lower surface 11, a first side surface 12 connecting the upper surface 10 and the lower surface 11, and a second side surface 13. The upper surface 10 is used to support an item. The lower surface 11 faces in the opposite direction to the upper surface 10. The base plate 1 includes a plurality of assembly holes 101 penetrating the upper surface 10 and the lower surface 11. The assembly hole 101 is used for receiving an assembly (not shown). The assembly may be a screw or bolt, etc. The assembly part is received in the assembly hole 101 and fixed to the rear frame of the carrier vehicle to fix the carrier frame to the carrier vehicle. The base plate 1 includes an anti-slip portion 102 disposed on the upper surface 10 to increase friction with an object and prevent the object from slipping.

The base plate 1 includes a pair of first receiving portions 14, a pair of second receiving portions (not shown), a projection 17 extending into the first receiving portions 14, and a tubular member 16 fixed to the lower surface 11. The projection 17 is forced to move relative to the base plate 1. The first extension member 2 is pulled out or retracted along the first receiving portion 14. The second extension member 3 is drawn out or retracted along the second receiving portion. The third elongate member 4 is pulled out or retracted along the space enclosed by the tubular member 16.

Referring to fig. 1 to 3, the first extension member 2 includes a third support bar 23, a pair of first support bars 21, a pair of second support bars 22, and a pair of stopper pins 24. The pair of first support rods 21 are respectively assembled to the base plate 1. The pair of second support bars 22 are assembled to the pair of first support bars 21, respectively. The third support bar 23 is assembled to the pair of second support bars 22. The pair of limit pins 24 are respectively assembled on the pair of second support rods 22 and the pair of third support rods 23. The pair of first support rods 21 are respectively accommodated in the pair of first accommodating portions 14 of the base plate 1 and are movable along the first accommodating portions 14. The pair of first support rods 21 are respectively retractable into the pair of first receiving portions 14. The second support bar 22 is movable along a support bar 21. The third support bar 23 can be partially retracted into the first receiving portion 14. The first support lever 21 includes a sleeve portion 210, a stopper portion 211 extending from the sleeve portion 210, a plurality of stopper holes 2101 provided in the sleeve portion 210, and a through hole 2110 provided in the stopper portion 211. The locking assembly comprises the protruding portion 17 and the limiting hole 2101, the protruding portion 17 of the base plate 1 is accommodated in the limiting hole 2101 of the first supporting rod 21 to prevent the first supporting rod 21 from moving continuously, so as to prevent the first extending member 2 from moving under stress, and after the protruding portion 17 is removed from the limiting hole 2101, the first supporting rod 21 can move continuously. The plurality of limiting holes 2101 allow the first support bar 21 to be limited in different pulled-out positions, allowing the carrier to be adjusted to a variety of different sizes.

Referring to fig. 2 and 4, the second support rod 22 is accommodated in the space surrounded by the sleeve portion 210 of the first support rod 21 and is movable along the space surrounded by the sleeve portion 210. The second support rod 22 includes a through hole 220 and a receiving portion 221 communicating with the through hole 220.

Referring to fig. 5, the third support bar 23 is substantially U-shaped, and includes a holding portion 230, a pair of connecting portions 231 extending from both ends of the holding portion 230, and a pair of assembling portions 232 respectively connected to the connecting portions 231. The pair of connection parts 231 is provided with a plurality of stopper grooves 2310, respectively. The locking assembly comprises the protruding portion 17 and the limiting groove 2310, the protruding portion 17 of the bottom plate 1 is received in the limiting groove 2310 of the third support rod 23 to prevent the third support rod 23 from moving continuously, so as to prevent the first extension piece 2 from moving under stress, and after the protruding portion 17 is removed from the limiting groove 2310, the third support rod 23 can move continuously. The plurality of stopper grooves 2310 allow the third support rod 23 to be stopped at different pull-out positions, and the carrier can be adjusted to various sizes. The assembling portion 232 is flat and includes a first hole 2320 and a second hole 2321 which are connected. The first aperture 2320 is generally elongated and the second aperture 2321 is generally circular.

Referring to fig. 6 to 8, the third support bar 23 is rotatable between a horizontal position and a vertical position. The third support bar 23 is in a horizontal position to support an object from the bottom surface. The third supporting rod 23 is in a vertical position, so that articles can be limited from the side edge, and the requirements of various use scenes are met. When the third support bar 23 is in the horizontal position, the limit pin 24 is assembled into the first hole 2320 of the third support bar 23 and the through hole 220 of the second support bar 22, so as to limit the third support bar 23 to the second support bar 22. When the third support rod 23 rotates to the vertical position, the third support rod 23 sinks under the influence of gravity, the limit pin 24 moves into the first hole 2320, and the end of the assembly portion 232 is accommodated in the through hole 2110 of the first support rod 21, so as to limit the third support rod 23 to the vertical position. When the third support rod 23 needs to be rotated to the horizontal position, the third support rod 23 is pulled upward, the end of the assembling portion 232 is moved out of the through hole 2110 of the first support rod 21, and the stopper pin 24 is moved into the second hole 2321.

The structures of the second extending member 3 and the third extending member 4 are the same as the first extending member 2, that is, the second extending member 3 and the third extending member 4 also include a third support rod 23, a pair of first support rods 21, a pair of second support rods 22 and a pair of limit pins 24, the pair of second support rods 22 are respectively assembled on the first support rod 21 and the third support rod 23, the second support rod 22 can reciprocate relative to the first support rod 21, the pair of first support rods 21 of the second extending member 3 is assembled on the bottom plate 1 and can reciprocate relative to the bottom plate 1, and the pair of first support rods 21 of the third extending member 4 is assembled on the tubular member 16 and can reciprocate relative to the tubular member 16.

The loading frame may further include a strap (not shown) that is retained between the third support bar 23 of the first extension member 2 and the third support bar 23 of the second extension member 3 to fix the article. The first 2, second 3 and third 4 elongate members may also be provided with hooks 6 to hold an article.

Referring to fig. 9 to 12, in another embodiment, the loading frame includes a bottom plate 1a, a first extension member 2a assembled to the bottom plate 1a, a second extension member 3a, and a plurality of locking members 5 a. The locking member 5a is assembled to the bottom plate 1a and the first extension member 2a to limit the first extension member 2a to the bottom plate 1 a. The locking member 5a is assembled to the bottom plate 1a and the second extension member 3a to limit the second extension member 3a to the bottom plate 1 a. The first extension piece 2a and the second extension piece 3a can be pulled out towards a direction far away from the bottom plate 1a or retracted towards a direction close to the bottom plate 1a, so that the length-direction size of the loading frame can be adjusted according to articles with different lengths, and the use convenience is improved. The first elongate member 2a is reciprocally movable in a first direction and the second elongate member 3a is reciprocally movable in a second direction, the first direction being opposite to the second direction.

The base plate 1a is provided with a first tubular portion 18a and a second tubular portion 19 a. The first tubular portion 18a and the second tubular portion 19a each include a first receiving hole 180 a. The first extension part 2a includes a main body 25a, and a first stopper 26a and a second stopper 27a assembled to the main body 25 a. The first and second stoppers 26a and 27a can move back and forth along the main body 25a to adjust the dimension of the loading rack in the width direction for receiving articles of different widths. The second body 25a includes a base 250a, a first assembly part 251a connected to the base 250a, a second assembly part 252a, a third assembly part 253a, and a fourth assembly part 254 a. The first assembling portion 251a is parallel to the second assembling portion 252 a. The first assembly portion 251a and the second assembly portion 252a are provided with a plurality of second receiving holes 2510a, respectively.

The first assembling portion 251a is assembled in a space surrounded by the first tubular portion 18a of the base plate 1a and is reciprocally movable along the first tubular portion 18a, and the second assembling portion 252a is assembled in a space surrounded by the second tubular portion 19a of the base plate 1a and is reciprocally movable along the second tubular portion 19 a. One of the locking members 5a is assembled into the first receiving hole 180a of the first tubular portion 18a and the second receiving hole 2510a of the first assembling portion 251a to limit the first assembling portion 251a to the first tubular portion 18a and prevent the first assembling portion 251a from moving relative to the first tubular portion 18 a. The other locking member 5a is assembled into the first receiving hole 180a of the second tubular portion 19a and the second receiving hole 2510a of the second assembly portion 252a to limit the second assembly portion 252a to the second tubular portion 19a and prevent the second assembly portion 252a from moving further relative to the second tubular portion 19 a.

The second stop 27a includes a stop portion 270a and a limiting portion 271a extending from the stop portion 270 a. The blocking portion 270a is perpendicular to the limiting portion 271 a. The stopper 271a is reciprocally movable along the fourth assembling portion 254 a. One of the limiting portion 271a and the fourth assembling portion 254a is provided with an accommodating space 2710a and a hole 2711a communicated with the accommodating space 2710a, and the other one is assembled into the accommodating space 2710a and is provided with a limiting block 2540a, and when the limiting block 2540a is accommodated in the hole 2711a, the limiting portion 271a is prevented from further moving relative to the fourth assembling portion 254 a.

The blocking portion 270a is shaped like a frame and is located at a side of the article to better limit the article. The limiting portion 271a and the fourth assembling portion 254a are provided as a pair to increase the stability of the assembly of the second stopper 27a and the main body 25 a. The number of the limiting portions 271a and the number of the fourth assembling portions 254a may be two or more.

The first abutting member 26a has the same structure as the second abutting member 27a, and also includes a stopping portion 270a and a limiting portion 271a extending from the stopping portion 270a, wherein the stopping portion 270a is perpendicular to the limiting portion 271 a. The specific structure of the first stop 26a and the assembling relationship with the main body 25a can be obtained by referring to the assembling relationship between the second stop 27a and the main body 25a, which is not described in detail herein.

The second extension piece 3a and the first extension piece 2a have the same structure, and the assembly relationship between the second extension piece 3a and the bottom plate 1a refers to the assembly relationship between the first extension piece 2a and the bottom plate 1a, which is not described herein again.

In this embodiment, the first elongate member 2a is reciprocally movable in a first direction and the second elongate member 3a is reciprocally movable in a second direction, the first direction being opposite to the second direction. The first stopper 26a of the first extension member 2a and the first stopper 26a of the second extension member 3a move back and forth in the third direction, and the second stopper 27a of the first extension member 2a and the second stopper 27a of the second extension member 3a move back and forth in the fourth direction. The fourth direction is opposite to the third direction, and the fourth direction is perpendicular to the first direction and the second direction. By adjusting the first extension piece 2a and the second extension piece 3a, the size of the loading frame can be adjusted to load articles with different sizes or more articles, and the use convenience is improved.

Other embodiments of the present description will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. This specification is intended to cover any variations, uses, or adaptations of the specification following, in general, the principles of the specification and including such departures from the present disclosure as come within known or customary practice within the art to which the specification pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the specification being indicated by the following claims.

It should also be noted that the terms "comprises," "comprising," or any other variation 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 may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The above description is only for the purpose of illustrating the preferred embodiments of the present disclosure and is not to be construed as limiting the present disclosure, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the present disclosure are intended to be included within the scope of the present disclosure.

Claims (25)

1. A loading frame is characterized by comprising a bottom plate, a first extending piece and a second extending piece, wherein the first extending piece and the second extending piece are assembled on the bottom plate and can move back and forth relative to the bottom plate so as to adjust the size of the loading frame, and the loading frame further comprises a locking assembly for preventing the first extending piece from moving relative to the bottom plate.

2. The carrier of claim 1, wherein the first elongate member is reciprocally movable in a first direction and the second elongate member is reciprocally movable in a second direction, the first direction being opposite the second direction.

3. The carrier as in claim 1, wherein said floor is provided with a plurality of assembly holes therethrough.

4. The carrier of claim 1, wherein the first elongate member includes a third support bar, a pair of first support bars assembled to the base plate, and a pair of second support bars assembled to the first support bar and the third support bar, respectively, the first support bar being reciprocally movable with respect to the base plate, the second support bar being reciprocally movable with respect to the first support bar.

5. The carrier as claimed in claim 4, wherein the second elongate member includes a third support bar, a pair of first support bars assembled to the base plate, and a pair of second support bars assembled to the first support bar and the third support bar respectively, the first support bar being reciprocally movable with respect to the base plate, the second support bar being reciprocally movable with respect to the first support bar.

6. The carrier of claim 5, including straps that are retained by the third support bar of the first elongate member and the third support bar of the second elongate member to secure the article.

7. The carrier as in claim 4, wherein the locking assembly comprises a protrusion and a limiting hole, the protrusion is disposed on the base plate, the limiting hole is disposed on the first support rod, and the protrusion is forced to move relative to the base plate to be received in the limiting hole to prevent the first support rod from moving.

8. The carrier as claimed in claim 4, wherein the locking assembly includes a protrusion and a limiting groove, the protrusion is disposed on the bottom plate, the limiting groove is disposed on the third supporting rod, and the protrusion is movable relative to the bottom plate to be received in the limiting groove to prevent the third supporting rod from moving.

9. A carrier as claimed in claim 4, wherein said base is provided with a pair of receiving portions into which a pair of said first support bars are respectively retractable.

10. The carrier as in claim 4, wherein the third support bar is rotatable relative to the second support bar between a horizontal position and a vertical position.

11. The carrier of claim 10, including a limit pin assembled to the third support bar and the second support bar, the limit pin for locking the third support bar in a vertical position.

12. The carrier as recited in claim 11, wherein the second support bar has a through hole and a receiving portion communicating with the through hole, and the third support bar has an assembly portion received in the receiving portion.

13. The carrier as claimed in claim 12, wherein the assembly portion has a first hole and a second hole, the first support rod includes a stop portion located below the assembly portion, the stop portion has a through hole, the limit pin is located in the second hole when the third support rod is in the horizontal position, the limit pin is located in the first hole when the third support rod is in the vertical position, and the end of the assembly portion is at least partially received in the through hole.

14. The carrier as claimed in claim 12, wherein the third support bar includes a hand-held portion and a pair of connecting portions extending from both ends of the hand-held portion, and the assembling portions are provided as a pair and connected to the pair of connecting portions, respectively.

15. A carrier as claimed in any one of claims 1 to 14, in which the carrier includes a third elongate member assembled to the base plate, the third elongate member being reciprocally moveable in a third direction, the third direction being perpendicular to the first and second directions.

16. A carrier as claimed in claim 15, in which the carrier comprises a tubular member secured to the base plate, the third elongate member portion being received in a space defined by the tubular member and being reciprocally movable along the tubular member.

17. The carrier of claim 16, wherein the third elongate member includes a third support bar, a pair of first support bars assembled to the tubular member, and a pair of second support bars assembled to the first support bar and the third support bar, respectively, the first support bar being reciprocally movable relative to the base plate and the second support bar being reciprocally movable relative to the first support bar.

18. The carrier of claim 1, wherein the first elongate member includes a body and a first stop and a second stop assembled to the body, the body is assembled to the base plate and is capable of reciprocating relative to the base plate, and the first stop and the second stop are capable of reciprocating relative to the body.

19. The carrier of claim 18, wherein the body includes a base portion, first and second, third and fourth assembly portions connected to the base portion, and the base plate includes first and second tubular portions, the first assembly portion being assembled in a space surrounded by the first tubular portion, the second assembly portion being assembled in a space surrounded by the second tubular portion, the first abutment member being assembled in the third assembly portion, and the second abutment member being assembled in the fourth assembly portion.

20. The carrier as in claim 19, wherein the first tubular portion includes a first receiving hole, the first assembly portion includes a plurality of second receiving holes, and the carrier includes a locking member assembled into the first receiving hole and the second receiving hole, the locking member preventing movement of the first assembly portion.

21. The carrier as claimed in claim 20, wherein the second tubular portion includes a first receiving hole, the second assembling portion includes a plurality of second receiving holes, and the carrier includes a locking member assembled into the first receiving hole and the second receiving hole, the locking member being configured to prevent the second assembling portion from moving.

22. The carrier of claim 19, wherein the second retaining member includes a retaining portion and a limiting portion extending from the retaining portion, one of the limiting portion and the fourth assembly portion has a receiving space and a hole communicating with the receiving space, the other one of the limiting portion and the fourth assembly portion is assembled into the receiving space and has a limiting block, and the limiting block prevents the limiting portion from moving relative to the fourth assembly portion when the limiting block is received in the hole.

23. The carrier as in claim 22, wherein the abutment portion is frame-shaped and perpendicular to the retention portion.

24. The carrier of claim 22, wherein the first blocking member includes a blocking portion and a limiting portion extending from the blocking portion, one of the limiting portion and the third assembling portion has a receiving space and a hole communicating with the receiving space, the other one of the limiting portion and the third assembling portion is assembled into the receiving space and has a limiting block, and the limiting block prevents the limiting portion from moving relative to the third assembling portion when the limiting block is received in the hole.

25. The carrier of claim 18, wherein the second elongate member includes a body and first and second abutments assembled to the body, the body being assembled to the base plate and being reciprocally movable relative to the base plate, the first and second abutments being reciprocally movable relative to the body.

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