CN218073974U

CN218073974U - Fast-assembling mechanism and table frame of table frame

Info

Publication number: CN218073974U
Application number: CN202221715742.9U
Authority: CN
Inventors: 张广昕; 刘丽芳; 王梦涛
Original assignee: Ziyi Geo Shanghai Technology Co ltd
Current assignee: Ziyi Geo Shanghai Technology Co ltd
Priority date: 2022-06-29
Filing date: 2022-06-29
Publication date: 2022-12-20
Anticipated expiration: 2032-06-29

Abstract

The embodiment of the utility model relates to a table frame, in particular to fast-assembling mechanism and table frame of table frame for can dismantle the connection with the crossbeam and the stand of table frame, this fast-assembling mechanism includes: the mounting block is arranged at the end part of the upright post and is provided with a first lock pin which can be clamped into a first clamping groove of the cross beam and a second lock pin which can be clamped into a second clamping groove of the cross beam; the lock catch is arranged on the cross beam and can rotate relative to the column mounting position of the cross beam, and the lock catch is used for buckling a first lock pin inserted into the first clamping groove when rotating to a preset position in the direction of the column mounting position, and enabling the first lock pin and the second lock pin to be respectively locked with the first clamping groove and the second clamping groove. Compared with the prior art, can need not with the help of outside instrument, can make the user can be simple, convenient quick assemble fast to parts such as crossbeam, stand to can make the table frame accomplish the equipment back, have better support performance.

Description

Fast-assembling mechanism and table frame of table frame

Technical Field

The embodiment of the utility model relates to a table frame, in particular to fast-assembling mechanism and table frame of table frame.

Background

Lifting platform, especially electric lift platform, for example the lift table is more and more popular in official working, house field at present, because lifting platform occupation space is great, inconvenient transportation, so at present lifting platform's manufacture factory does not assemble usually when leaving the factory, and the consumer assembles or assembles by the factory door by oneself after purchasing, so how to realize fast assembly or convenient equipment, is that lifting platform or electric lift platform need a urgent problem of solving at present.

The current lifting platform usually comprises a table top and a table frame, the table frame comprises a cross beam and a lifting upright post, the later assembly is usually performed between the cross beam and the lifting upright post, the current lifting upright post and the cross beam are basically two independent parts, and a user needs to separately connect and fix the lifting upright post and the cross beam during assembly, which is inconvenient for consumers to assemble.

SUMMERY OF THE UTILITY MODEL

An embodiment of the utility model provides a fast-assembling mechanism and table frame of table frame can need not with the help of external instrument, can make the user can be simple, convenient quick carry out fast assembly to parts such as crossbeam, stand to can make the table frame accomplish the equipment back, have better support performance.

In order to achieve the above object, an embodiment of the utility model provides a fast-assembling mechanism of table frame for can dismantle the connection with the crossbeam and the stand of table frame, fast-assembling mechanism includes:

the mounting block is arranged at the end part of the upright post; the mounting block is provided with a first lock pin which can be clamped into a first clamping groove of the cross beam and a second lock pin which can be clamped into a second clamping groove of the cross beam;

the lock catch is arranged on the cross beam and can rotate relative to the upright post mounting position of the cross beam; the lock catch is used for buckling the first lock pin inserted into the first clamping groove or buckling the second lock pin inserted into the second clamping groove when the lock catch rotates to a preset position in the direction of the upright post mounting position, so that the first lock pin and the second lock pin are respectively locked with the first clamping groove and the second clamping groove.

In addition, the embodiment of the utility model also includes a table frame, include: crossbeam and stand, the table frame still includes: the quick load mechanism as described above;

the beam is provided with a first clamping groove, a second clamping groove and an upright post mounting position, the mounting block is detachably arranged on the upright post mounting position, the first lock pin on the mounting block is inserted into the first clamping groove, and the second lock pin on the mounting block is inserted into the second clamping groove.

The utility model discloses an embodiment is for prior art, when installing stand and crossbeam to the table frame, only need to set up in the column mouting position of crossbeam is arranged in to the installation piece of stand tip, and install the in-process to the column mouting position of crossbeam at the installation piece, can make first lockpin and second lockpin on the installation piece can block respectively into in the first draw-in groove and the second draw-in groove of crossbeam, and, go into respectively as first lockpin and second lockpin card back in the first draw-in groove and the second draw-in groove of crossbeam, can rotate the direction of hasp towards the column mouting position on the crossbeam again, and when the hasp rotates to predetermineeing the position, the hasp can directly withhold first lockpin, and can make first lockpin and second lockpin respectively with first draw-in groove and second draw-in groove lock joint, thereby can accomplish the installation of stand and crossbeam. Therefore, the table frame can be found easily, the whole installation process does not need any external tool, the stand column and the cross beam can be installed very quickly and conveniently, and meanwhile, the table frame has better supporting performance after being assembled.

Drawings

FIG. 1 is a schematic side view of a quick-mount mechanism according to an embodiment of the present invention, shown in an axial view, connecting a column and a beam;

FIG. 2 is an isometric view of a quick mount mechanism according to some embodiments of the present invention;

FIG. 3 is a schematic illustration of a forgiveness of the latch and the beam according to some embodiments of the present invention;

FIG. 4 is a schematic side view of a latch according to some embodiments of the present invention;

FIG. 5 is a schematic view of the latch engaging the first locking pin according to some embodiments of the present invention;

FIG. 6 is a schematic view of the latch of some embodiments of the present invention shown with the first locking pin disengaged;

FIG. 7 is an exploded view of the cross beam and side spars of an embodiment of the present invention;

fig. 8 is a schematic perspective view of a table frame according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that in various embodiments of the invention, numerous technical details are set forth in order to provide a better understanding of the present application. However, the technical solution claimed in the present application can be implemented without these technical details and various changes and modifications based on the following embodiments.

Example one

The utility model discloses a first embodiment relates to a fast-assembling mechanism of table frame, as shown in fig. 1 and fig. 2 for can dismantle the connection with the crossbeam and the stand of table frame, wherein, the fast-assembling mechanism of this embodiment includes: a mounting block 1 and a shackle 2.

As shown in fig. 1 and 2, the mounting block 1 is disposed at an end of the upright 3, and the mounting block 1 is provided with a first lock pin 5 that can be locked into a first lock groove 41 of the cross beam 4 and a second lock pin 6 that can be locked into a second lock groove 42 of the cross beam 4.

In addition, as shown in fig. 3, 4 and 5, the lock catch 2 is disposed on the cross beam 4 and is rotatable relative to the pillar mounting position 43 of the cross beam 4, and the lock catch 2 is configured to catch the first lock pin 5 inserted into the first slot 41 when rotating to a preset position in a direction toward the pillar mounting position 43, and lock the first lock pin 5 and the second lock pin 6 with the first slot 41 and the second slot 42, respectively.

It can be seen from the above that, when the column 3 and the beam 4 of the table frame are installed, only the installation block 1 arranged at the end of the column 3 needs to be placed in the column installation position 43 of the beam 4, and in the process that the installation block 1 is installed to the column installation position 43 of the beam 4, the first lock pin 5 and the second lock pin 6 on the installation block 1 can be respectively clamped into the first clamping groove 41 and the second clamping groove 42 of the beam 4, and after the first lock pin and the second lock pin 5 are respectively clamped into the first clamping groove 41 and the second clamping groove 42 of the beam 4, the lock catch 2 on the beam 4 can be rotated towards the column installation position 43, and when the lock catch 2 is rotated to the preset position, the lock catch 2 can directly lock the first lock pin 5, and the first lock pin 5 and the second lock pin 6 can be respectively connected with the first clamping groove 41 and the second clamping groove 42, so that the installation of the column 3 and the beam 4 can be completed. Therefore, the table frame can be quickly and conveniently installed without any external tool in the whole installation process, and meanwhile, the table frame has better supporting performance after being assembled.

Specifically, as shown in fig. 3 and 4, the latch 2 has: hinge portion 21, pressing portion and clamping portion 23. Wherein, articulated portion 21 and crossbeam 4 rotate to be connected, and the portion of supporting is kept away from articulated portion 21 and is set up, and joint portion 23 sets up between articulated portion 21 and the portion of supporting to, when hasp 2 rotated to predetermineeing the position towards the direction of stand installation position 43, the portion of supporting can support and press installation piece 1, and simultaneously, this joint portion can detain first latch 5.

For example, in some embodiments, as shown in fig. 2 and 3, two first lock pins 5 and two second lock pins 6 are provided, wherein the two first lock pins 5 are coaxially arranged along a first preset axis, the two second lock pins 6 are coaxially arranged along a second preset axis, and the first preset axis is also parallel to the second axis.

And corresponding to the two first lock pins 5 and the two second lock pins 6, as shown in fig. 3 and 7, there are two first locking grooves 41 and two second locking grooves 42 on the cross beam 4, and the two first lock pins 5 and the two first locking grooves 41 are uniquely and correspondingly arranged, and similarly, the two second lock pins 6 and the two second locking grooves 42 are uniquely and correspondingly arranged, so that when the mounting block 1 is mounted to the column mounting position 43 of the cross beam 4, the two first lock pins 5 can be respectively locked into the uniquely corresponding first locking grooves 41, and the two second lock pins 6 can be respectively embedded into the uniquely corresponding second locking grooves 42.

Moreover, in order to enable the latch 2 to rotate relative to the upright post mounting position 43 through the hinge portion 21, and simultaneously, in order to enable the latch 2 to rotate to a preset position towards the upright post mounting position 43, the mounting block 1 can be pressed by the pressing portion, and meanwhile, the two first latches 5 can be respectively latched by the clamping portion 23. As shown in fig. 3 and 4, the buckle 2 includes: a pivoting bracket 25 composed of a first supporting arm 251 and a second supporting arm 252, a link 22, a first hinge 211, a second hinge 212, a first catching protrusion 231, and a second catching protrusion 232.

As shown in fig. 3 and fig. 4, the first supporting arm 251 and the second supporting arm 252 are disposed opposite to and parallel to each other, and the first supporting arm 251 has a first head 2511 and a first tail 2512 far away from the first head 2511, and the second supporting arm 252 has a second head 2521 and a second tail 2522 far away from the second head 2521. In addition, the connecting rod 22 is disposed between the first supporting arm 251 and the second supporting arm 252, and is connected to the first head end 2511 and the second head end 2522, respectively. In addition, as shown in fig. 3, the first hinge 211 is disposed at the first end 2512 of the first support arm 251 and is rotatably connected to the beam 4, and the second hinge 212 is disposed at the second end 2522 of the second support arm 252 and is rotatably connected to the beam 4. In addition, as shown in FIG. 4, first clamping protrusion 231 is disposed on first support arm 251 between first head end 2511 and first tail end 2512, and second clamping protrusion 232 is disposed on second support arm 252 between second head end 2521 and second tail end 2522.

In practical applications, as shown in fig. 3 and 4, the latch 2 may be respectively connected to the cross beam 4 by the first hinge 211 and the second hinge 212, so that the first support arm 251 and the second support arm 252 of the latch 2 may rotate by using the first preset axis as a pivot axis, and when the first support arm 251 and the second support arm 252 of the latch 2 rotate to the preset position in a direction toward the column mounting position 43, as shown in fig. 5, the connecting rod 22 may firmly press against the mounting block 1, at this time, the first clamping protrusion 231 may further clamp one of the first lock pins 5, and the second clamping protrusion 232 may clamp the other first lock pin 5, so that at this time, the two first lock pins 5 may respectively realize locking with the two first lock slots 41 under the effect of the first clamping protrusion 231 and the second clamping protrusion 232, and the two second lock pins 6 may respectively realize locking with the two second lock slots 42, thereby realizing mounting between the column 3 and the cross beam 4. Moreover, it is obvious from the above description that the connecting rod 22 forms a pressing portion of the latch 2, and meanwhile, the first hinge 211 and the second hinge 212 may jointly form the hinge portion 21 of the latch 2, and the first clamping protrusion 231 and the second clamping protrusion 232 may jointly form the clamping portion 23 of the latch 2.

In addition, in the present embodiment, in order to enable the link 22 to be more favorably pressed against the mounting block 1 during the rotation of the first support arm 251 and the second support arm 252, as shown in fig. 4, the first support arm 251 includes: a first horizontal segment 2513 formed by extending the first head end 2511 to the first tail end 2512, and a first bending segment 2514 connected to the first horizontal segment 2513. Likewise, the second support arm 252 includes: a second horizontal segment 2523 extending from the second head end 2521 to the second tail end 2522, and a second bent segment 2524 connected to the second horizontal segment 2523. Also, as can be easily seen from fig. 4, the first catching protrusion 231 is disposed at the first horizontal section 2513 and is disposed opposite to the first bending section 2514, and at the same time, the first hinge 211 is disposed at the first bending section 2513. Similarly, as shown in fig. 4, the second clamping protrusion 232 is disposed at the second horizontal segment 2523 and opposite to the second bending segment 2524, and meanwhile, the second hinge member 212 is disposed at the second bending segment 2524. With the aid of the first bending section 2514 and the second bending section 2524, a certain height difference is generated between the first head end 2511 and the second head end 2521 and the first tail end 2512 and the second tail end 2522, so that when the first support arm 251 and the second support arm 252 rotate to the preset position in the direction towards the column mounting position 43 by using the first preset axis as a pivot axis, the connecting rod 22 can be pressed on the mounting block 1 better, so as to ensure the stability of the mounting block 1 mounted on the cross beam 4.

However, as a preferable solution, in some embodiments, as shown in fig. 4, one side of the first catching protrusion 231 for catching one of the first lock pins 5 is a concave first arc surface 2311, and likewise, one side of the second catching protrusion 232 for catching the other first lock pin 5 is a concave second arc surface 2321. Through first cambered surface 2311 and second cambered surface 2321 can be at first joint arch 231 and second joint arch 232 respectively when detaining two first lockpins 5, can reach the effect to two first lockpins 5 locking to can further improve the reliability of stand 3 and crossbeam 4 after accomplishing the installation. And when the table frame needs to be disassembled, as shown in fig. 6, the first supporting arm 251 and the second supporting arm 252 can be rotated towards the direction away from the column mounting position 43, and when the table frame rotates, the first supporting arm 251 and the second supporting arm 252 can be respectively matched with the two first locking pins 5 by virtue of the first cambered surface 2311 and the second cambered surface 2321, so that the resistance of the first supporting arm 251 and the second supporting arm 252 when the table frame rotates is reduced, a user can not only quickly install the table frame, but also can quickly disassemble the table frame when the table frame needs to be transported.

Example two

A second embodiment of the present invention relates to a table frame, as shown in fig. 8, including: crossbeam 4 and stand 3, this table frame still includes: the quick-install mechanism as described in the first embodiment.

As shown in fig. 7, the cross beam 4 is provided with a first engaging groove 41, a second engaging groove 42 and an upright mounting position 43, the mounting block 1 is detachably disposed on the upright mounting position 43, the first locking pin 5 on the mounting block 1 is inserted into the first engaging groove 41, and the second locking pin 6 on the mounting block 1 is inserted into the second engaging groove 42.

It can be seen from the above that, when the column 3 and the beam 4 of the table frame are installed, only the installation block 1 arranged at the end of the column 3 needs to be placed in the column installation position 43 of the beam 4, and in the process that the installation block 1 is installed to the column installation position 43 of the beam 4, the first lock pin 5 and the second lock pin 6 on the installation block 1 can be respectively clamped into the first clamping groove 41 and the second clamping groove 42 of the beam 4, and after the first lock pin 5 and the second lock pin 6 are respectively clamped into the first clamping groove 41 and the second clamping groove 42 of the beam 4, the lock catch 2 on the beam 4 can be rotated towards the column installation position 43, and when the lock catch 2 is rotated to the preset position, the lock catch 2 can directly lock the first lock pin 5, and the first lock pin 5 and the second lock pin 6 can be respectively connected with the first clamping groove 41 and the second clamping groove 42, so that the installation of the column 3 and the beam 4 can be completed. Therefore, the table frame can be quickly and conveniently installed without any external tool in the whole installation process, and meanwhile, the table frame has better supporting performance after being assembled.

Specifically, in the present embodiment, as shown in fig. 7, the cross member 4 includes: a bottom plate 44, and at least one side member 45 provided along the longitudinal direction of the bottom plate 44. Also, the bottom plate 44 has a portion forming the post mounting position 43, and the first and second

catching grooves

41 and 42 are disposed opposite to each other along the length direction of the side beam 45.

Moreover, in order to enable the first supporting arm 251 and the second supporting arm 252 of the latch 2 to rotate to the preset positions in the direction of the pillar mounting position 43, the first lock pin 5 and the second lock pin 6 can be well locked with the first locking groove 41 and the second locking groove 42, respectively. In the present embodiment, as shown in fig. 7, the first card slot 41 includes: a first insertion groove section 411 extending from a side of the side member 45 with respect to the bottom plate 44 in a direction of the bottom plate 44, and a first locking groove section 412 connected to the first insertion groove section 411. And the second groove section 42 comprises: a second insertion groove section 421 extending from a side of the side member 45 opposite to the bottom plate 44 in a direction of the bottom plate 44, and a second locking groove section 422 connected to the second insertion groove section 421.

As shown in fig. 7, an included angle is formed between the first insertion groove section 411 and the first locking groove section 412, and an included angle is formed between the second insertion groove section 421 and the second locking groove section 422. For example, in some embodiments, as shown in fig. 7, the first insertion groove section 411 and the second insertion groove section 421 are both vertical groove sections perpendicular to the bottom plate 44, the first locking groove section 412 and the second locking groove section 422 are both inclined groove sections, and the inclination directions of the first locking groove section 412 and the second locking groove section 422 are the same. Therefore, as shown in fig. 7 and 8, when the mounting block 1 is mounted to the column mounting position 43 of the cross beam 4, the first lock pin 5 and the second lock pin 6 can slide into the first locking groove section 412 and the second locking groove section 422 from the first insertion groove section 411 and the second insertion groove section 421, respectively, so that when the latch 2 rotates to the preset position in the direction of the column mounting position 43, the first lock pin 5 can be locked by the locking part 23, so that the first lock pin 5 can be firmly locked by the clamping part 23 in the first locking groove section 412 of the first locking groove 41, and the first lock pin 5 cannot move at this time, so that the second lock pin 6 can also be firmly locked in the second locking groove section 422 of the second locking groove 42.

In addition, since the number of the first lock pins 5 and the number of the second lock pins 6 on the mounting block 1 are two, the engaging portion 23 of the present embodiment is formed by the first engaging protrusion 231 and the second engaging protrusion 232. Therefore, in order to further improve the stability and reliability of the installation between the cross beam 4 and the installation block 1, as shown in fig. 7, two side beams 45 are provided on the cross beam 4, and the two side beams 45 are oppositely and parallelly arranged along the width direction of the bottom plate 44, so that an installation groove (not shown) capable of being embedded into the installation block 1 is formed between the two side beams 45, and part of the installation groove forms a column installation position 43 for installing the installation block 1. In addition, two curb girders 45 correspond two first lockpins 5 and two second lockpins 6 respectively, can set up first draw-in groove 41 and second draw-in groove 42 respectively, make installation piece 1 when installing to column mouting position 43, two first lockpins 5 on the installation piece 1 can block respectively in two first draw-in grooves 41, simultaneously, two second lockpins 6 on the installation piece 1 can block respectively in two second draw-in grooves 42 again, from this it is difficult to see, through the lock of two first lockpins 5 with two first draw-in grooves 41, and the lock of two second lockpins 6 with two second draw-in grooves 42, can further improve the stability ability of installation piece 1 after with crossbeam 4 installation.

Further, most preferably, in some embodiments, as shown in fig. 7, the two side beams 45 form a cavity (not shown) in the longitudinal direction thereof, the cavity communicating with the first and second locking

grooves

41 and 42, and as shown in fig. 7 and 8, the table frame of the present embodiment further includes: the side wing beam 9, the side wing beam 9 has an extension board 91 which can be inserted into the cavity, the extension board 91 is provided with a third clamping groove 92, and the third clamping groove 92 is used for overlapping with the second clamping groove 42 on the side beam 45 after the extension board 91 is inserted into the cavity. Therefore, after the extension board 91 is inserted into the cavity of the side beam 45, the second lock pin 6 is inserted into the second slot 42, so that the second lock pin 6 can also slide into the third slot 92 at the same time, and the second lock pin 6 can also lock the extension board 91 at the same time, so that the side spar 9 can be installed and fixed with the side beam 45 under the clamping action of the second lock pin 6, and therefore, the support performance of the multiple desk boards of the desk frame can be further improved through the side wing plate 5.

In the present embodiment, as shown in fig. 7, two side members 45 are provided in total, two extension plates 91 are provided on the side member 9 in correspondence with the two side members 45, the two extension plates 91 are uniquely associated with the two side members 45, and the extension plates 91 are inserted into cavities of the uniquely associated side members 45, so that the reliability of connection between the side member beams 45 and the side member beams 9 can be further improved by engaging the two second lock pins 6 with the two third engaging grooves 92, and the connection between the side member beams 45 and the side member beams 9 can be further secured.

In addition, in the present embodiment, in order to further improve the stability of the desk frame of the present embodiment, as shown in fig. 5, two sides of the bottom plate 44 in the width direction are respectively a first side and a second side, one of the side beams 45 is formed by bending and extending the first side of the bottom plate 44 toward the second side, and similarly, the other side beam 45 is formed by bending and extending the second side of the bottom plate 44 toward the first side, so that the bottom plate 44 and the two side beams 45 are integrated, thereby further improving the strength of the cross beam 4 and providing the desk frame with better supporting performance. Of course, as an alternative, the cross beam 4 may also include two side beams 45, and the two side beams 45 may be connected by a joint, so that the two cross beams 4 are independent components, and the structural seat of the cross beam 4 is not limited in this embodiment.

It will be understood by those skilled in the art that the foregoing embodiments are specific to implementations of the invention, and that various changes in form and details may be made therein without departing from the spirit and scope of the invention in practice.

Claims

1. The utility model provides a fast-assembling mechanism of table frame for can dismantle the connection with the crossbeam and the stand of table frame, its characterized in that, fast-assembling mechanism includes:

the lock catch is arranged on the cross beam and can rotate relative to the upright post mounting position of the cross beam; the lock catch is used for buckling the first lock pin inserted into the first clamping groove when the lock catch rotates to a preset position towards the direction of the upright post mounting position, so that the first lock pin and the second lock pin are respectively locked with the first clamping groove and the second clamping groove.

2. A quick-mount mechanism for a table frame as claimed in claim 1 wherein said latch comprises:

the hinge part is rotationally connected with the cross beam;

the pressing part is arranged far away from the hinged part and used for pressing the mounting block when the lock catch rotates to the preset position towards the upright post mounting position;

the clamping portion is arranged between the hinge portion and the abutting portion and used for buckling the first lock pin or the second lock pin when the lock catch rotates to a preset position towards the upright post mounting position.

3. A quick-assembly mechanism for tables and racks as claimed in claim 2, characterized in that said first locking pins are provided in two, two of said first locking pins being coaxially arranged along a first predetermined axis, and two of said second locking pins being coaxially arranged along a second predetermined axis; wherein the first preset axis is parallel to the second preset axis;

the lock catch comprises:

the first supporting arm and the second supporting arm are opposite to each other and arranged in parallel; the first support arm is provided with a first head end and a first tail end far away from the first head end, and the second support arm is provided with a second head end and a second tail end far away from the second head end;

the connecting rod is arranged between the first supporting arm and the second supporting arm and is respectively connected with the first head end and the second head end;

a first hinge and a second hinge; the first hinge is arranged at the first tail end of the first support arm and is rotatably connected with the cross beam; the second hinge is arranged at the second tail end of the second supporting arm and is rotatably connected with the cross beam;

a first clamping protrusion and a second clamping protrusion; the first clamping bulge is arranged on the first supporting arm and used for buckling one of the first lock pins; the second clamping bulge is arranged on the second supporting arm and used for buckling the other first lock pin;

the connecting rod forms the pressing portion, the first hinge part and the second hinge part form the hinge part together, and the first clamping protrusion and the second clamping protrusion form the clamping portion together.

4. A quick-mount mechanism for a table top as claimed in claim 3 wherein said first support arm comprises: the first horizontal section is formed by extending the first head end to the first tail end, and the first bending section is connected with the first horizontal section;

the second support arm includes: the second horizontal section is formed by extending the second head end to the second tail end, and the second bending section is connected with the second horizontal section;

the first clamping protrusion is arranged on the first horizontal section and is opposite to the first bending section, and the first hinge part is arranged on the first bending section;

the second joint is convexly arranged on the second horizontal section, the second bending section is oppositely arranged, and the second hinged part is arranged on the second bending section.

5. A quick-assembling mechanism for tables and racks as claimed in claim 4, characterized in that one side of said first engaging projection for catching one of said first lock pins is a first concave arc surface; one side of the second clamping bulge, which is used for buckling the other first lock pin, is a concave second cambered surface.

6. A table frame, comprising: crossbeam and stand, its characterized in that, the table frame still includes: the quick load mechanism of any one of claims 1-5;

7. A table frame as defined in claim 6, wherein said cross-beam comprises: a bottom plate, at least one side beam arranged along a length direction of the bottom plate;

wherein the bottom plate has a portion forming the post mounting location, and the first and second slots are disposed opposite to each other along a length direction of the side beam.

8. A table frame as defined in claim 7, wherein said first card slot comprises: the first insertion groove section extends from one side of the side beam relative to the bottom plate towards the direction of the bottom plate, and the first locking groove section is connected with the first insertion groove section, wherein an included angle is formed between the first insertion groove section and the first locking groove section;

the second card slot includes: the side beam comprises a second insertion groove section and a first locking groove section, wherein the second insertion groove section extends from one side of the side beam relative to the bottom plate towards the direction of the bottom plate, the first locking groove section is connected with the second insertion groove section, and an included angle is formed between the second insertion groove section and the second locking groove section.

9. A table frame as claimed in claim 7, wherein said side beams are provided in two and are disposed opposite and parallel to each other in the width direction of said base plate.

10. A table frame as claimed in any one of claims 7 to 9, wherein said side beams form a cavity along their length in communication with said first and second slots, said table frame further comprising:

the side wing beam is provided with an extension plate which can be inserted into the cavity, and the extension plate is provided with a third clamping groove;

the third clamping groove is used for overlapping with the second clamping groove on the side beam after the extension plate is inserted into the cavity.