CN215650037U

CN215650037U - Stable assembly structure of furniture drawer

Info

Publication number: CN215650037U
Application number: CN202120056754.4U
Authority: CN
Inventors: 伍志勇
Original assignee: Guangdong DTC Hardware Precision Manufacturing Co Ltd
Current assignee: Guangdong DTC Hardware Precision Manufacturing Co Ltd
Priority date: 2021-01-08
Filing date: 2021-01-08
Publication date: 2022-01-28
Anticipated expiration: 2031-01-08

Abstract

A stable assembly structure of a furniture drawer comprises a left side plate, a right side plate and a connecting piece; the left side plate and the right side plate are sheet metal parts, and front ends of the sheet metal parts are integrally bent to form a front bending part; the connecting piece is connected with the front bending part in a matched mode, and a fastening part is arranged in the direction opposite to the front bending part. According to the utility model, through the improvement of the structure, the front bending part is connected with the connecting piece, then the fastening part is arranged on the connecting piece in the opposite direction of the front bending part, so that a space is formed between the fastening part and the front bending part, and then the front plate can be assembled by using the fastening part, so that even if the front plate is assembled by a plurality of plates, the stable assembly can be realized by arranging the fixing piece on the fastening part, the fixing piece can be far away from the assembling position of the front plate during the fixing action, and further the defect caused by cracking of the front plate due to the fact that the front plate is directly assembled with the front bending part only through the fixing piece in the prior art and the fixing piece is easily acted on the assembling position of the front plate during the assembling is avoided, and the assembling stability of the front plate is improved.

Description

Stable assembly structure of furniture drawer

Technical Field

The utility model relates to a stable assembly structure of a furniture drawer, in particular to a structure which can realize stable assembly when a front plate of the furniture drawer is formed by assembling a plurality of plate elements.

Background

Chinese patent document No. CN111955963A discloses an improved furniture drawer assembling structure in 20/11/2020, which includes a side plate, a front plate and a rear plate, wherein the front and rear ends of the side plate are respectively and integrally bent to form a front bent portion and a rear bent portion, the lower portion of the side plate is integrally or separately provided with a supporting portion, the supporting portion is downwardly integrally or separately provided with a depending portion, the side plate is further provided with an assembling plate member and a notch portion, and the assembling plate member is located inside the notch portion and is fixedly disposed on the side plate. When the front plate is assembled, the front plate can be fixedly arranged on the front bending part or the front side wall of the side plate in a clamping or fixing part or sticking or magnetic sucking way, and in the actual use process, in order to improve the assembly stability of the front plate and reduce the production and assembly cost, the front plate is generally assembled by adopting the fixing part, namely, when the fixing part is assembled, one end of the fixing part can be fixedly acted on the front bending part, the other end of the fixing part is fixedly acted on the front plate, and when the fixing part and the front plate are fixedly acted, holes can be formed on the front plate; to large-scale front bezel, assemble through a plurality of plates and form, the mounting can be used in the position of assembling of front bezel very easily when the assembly, leads to the front bezel fracture, then influences the front bezel outward appearance gently, then causes the unable normal use of front bezel or drops from the curb plate when using heavily, seriously influences the assembly stability of front bezel and user's safety in utilization. Therefore, further improvements are necessary.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a stable assembly structure of a furniture drawer, which overcomes the defects in the prior art.

The firm assembly structure of furniture drawer according to this purpose design, curb plate about including, its characterized in that: the device also comprises a connecting piece; the left side plate and the right side plate are sheet metal parts, and front ends of the sheet metal parts are integrally bent to form a front bending part; the connecting piece is connected with the front bending part in a matched mode, and a fastening part is arranged in the direction opposite to the front bending part.

The front bending part is integrally bent at the front ends of the left and right side plates towards the inner side and is provided with a fixing part; the connecting piece is provided with a fixed matching part and is detachably connected with the fixed part of the front bending part through the fixed matching part in a matching way.

The connecting piece is made of metal or plastic, one side of the connecting piece is provided with a fixed matching part, the other side of the connecting piece is provided with a fastening part, the fastening part is positioned on the outer sides of the left side plate and the right side plate, and the fastening part and the fixed matching part and/or the fixed matching part are independently arranged to form a space.

The fastening part is also provided with a fixing part, and the fixing part and the fastening part can be matched and connected in a left-right adjusting mode at least.

And a pre-positioning matching part is also arranged between the connecting piece and the front bending part, the pre-positioning matching part and the front bending part are in pre-positioning matching through the pre-positioning matching part, and the pre-positioning matching part and the front bending part are in detachable matching connection after positioning.

The front bending part is integrally bent at the front ends of the left side plate and the right side plate towards the inner side, and a fixing part and pre-positioning are arranged on the front bending part; the connecting piece is made of metal or plastic, and one side of the connecting piece is provided with a fixed matching part and a preset matching position; one side of the connecting piece is in pre-positioning and pre-positioning fit with the pre-positioning pre-bending part through a pre-positioning fit position, and is in detachable fit connection with the fixing part of the front bending part through a fixing fit part after being positioned; a fastening part is arranged on the other side of the connecting piece; the fastening part is positioned on the outer sides of the left side plate and the right side plate, is independently arranged between the fastening part and the fixing part and/or the fixing matching part and/or the prepositioning and/or the presetting matching position, and forms a space.

The structure also comprises a bearing device and a sliding rail component; the lower parts of the left and right side plates are respectively provided with a left and right supporting part, and the lower parts of the left and right supporting parts are respectively provided with a leaning part; the left side plate and the right side plate are detachably arranged on the sliding rail assembly, and the sliding rail assembly depends on the inner side of the depending part when the sliding rail assembly and the sliding rail assembly are assembled.

A left base and a right base are arranged between the left supporting part and the right supporting part, and positioning parts are arranged on the left base and the right base; the bearing device comprises a transverse rod telescopic component which can bear the positioning and placing device and can transversely position and move, the transverse rod telescopic component at least comprises a positioning piece, and a positioning matching part is arranged on the positioning piece; the bearing device is sleeved on the positioning parts of the left base and the right base in a longitudinally positioning, dismounting and mounting mode through the positioning matching parts of the positioning pieces.

A space is formed between the positioning part and the front bending part and/or the fixing matching part and/or the fastening part; the height that fixed part, and/or fixed cooperation portion, and/or fastening portion set up is higher than the height that location portion set up.

Still be provided with guide portion between location portion and the location cooperation portion, and the two cup joints through guide portion direction formula longitudinal positioning.

The cross rod telescopic assembly comprises a front cross rod telescopic assembly, a rear cross rod telescopic assembly and a middle cross rod telescopic assembly.

The front and rear cross rod telescopic assemblies respectively comprise a middle cross rod and left and right side cross rods; the positioning piece comprises a side positioning piece which is matched and connected with the left side cross rod and the right side cross rod; the outer ends of the left and right side cross rods are respectively fixedly connected with the side positioning pieces, and the inner ends of the left and right side cross rods are respectively sleeved with the two ends of the middle cross rod in a positioning type in a sliding manner.

The side positioning piece is concavely provided with a positioning matching part; the left base and the right base are convexly provided with at least one positioning part; the bearing device is longitudinally positioned and disassembled on the positioning part through the positioning matching part.

The middle cross rod telescopic component is positioned between the front cross rod telescopic component and the rear cross rod telescopic component and comprises a middle movable rod and left and right movable rods; the positioning piece also comprises a middle positioning piece which is matched and connected with the left and right movable rods; the outer ends of the left and right movable rods are respectively fixedly connected with the middle positioning piece and are respectively supported on the left and right bases through the longitudinal sliding and/or positioning of the middle positioning piece, and the inner ends of the left and right movable rods are respectively in positioning type sliding sleeve joint with the two ends of the middle movable rod.

At least one placeable device and a bearing area with adjustable longitudinal and/or transverse dimensions are formed between the front and rear cross bar telescopic assemblies and the middle cross bar telescopic assembly.

The front and rear cross bar telescopic assemblies are respectively provided with a front and rear moving part in a transverse moving way, and the middle cross bar telescopic assembly is provided with a middle moving part in a transverse moving way; the upper connecting rods are detachably arranged on the upper parts of the front and rear moving parts and the middle moving part, and the lower connecting rods are detachably arranged on the lower parts of the front and rear moving parts.

The middle cross bar telescopic component, the middle positioning piece and the middle moving piece synchronously and longitudinally slide between the front cross bar telescopic component and the rear cross bar telescopic component through the matching of the upper connecting rod and the lower connecting rod, and are positioned and supported on the left base and the right base through the middle positioning piece and/or the middle moving piece at least when stressed, so as to position and/or adjust the longitudinal size of the bearing area.

The front and rear moving parts and the middle moving part transversely slide on the front and rear cross rod telescopic assemblies and the middle cross rod telescopic assemblies and drive the upper connecting rod and the lower connecting rod to synchronously transversely slide on the front and rear cross rod telescopic assemblies and the middle cross rod telescopic assemblies during transverse sliding so as to adjust the transverse size of the bearing area.

When the device is placed in the bearing area, the bottom of the device is supported on the lower connecting rod in a bearing type positioning mode, and the side parts of the device are positioned front and back and/or left and right to act on the upper connecting rod and/or the front and back cross rod telescopic assemblies and/or the middle cross rod telescopic assemblies.

After the device is placed, the device is positioned and supported on the left base and the right base through the side positioning piece and/or the middle positioning piece and/or the front movable piece and the rear movable piece and/or the middle movable piece, and then the device is supported and acted on the left supporting part and the right supporting part and the sliding rail assembly through the left base and the right base.

Through the improvement of the structure, compared with the prior art, the utility model has the following advantages:

1. the inboard integrative buckling of curb plate front end has preceding bending part about, and be provided with the connecting piece through preceding bending part components of a whole that can function independently, be provided with the fastening portion that can be used to assemble the front bezel on the connecting piece afterwards, this fastening portion is located about the curb plate outside, and with the independent setting of preceding bending part, and form the interval each other, consequently when just calculating the front bezel and assembling by a plurality of plates and form, also can be through setting up the mounting and then realize firm assembly in fastening portion, make the mounting can keep away from the position of assembling of front bezel when the fixed action simultaneously, thereby the position of assembling of front bezel has been avoided effectively, and then avoid among the prior art the front bezel only through the mounting directly with preceding bending part assembly, and the mounting is acted on the position of assembling of front bezel very easily when assembling, lead to the drawback that the front bezel ftractures and causes, with the assembly steadiness of improvement front bezel.

2. The lower parts of the left and right side plates are respectively provided with a left and right supporting part, a left and right base is arranged between the left and right supporting parts, the left and right base is provided with a positioning part, then both ends of a front cross rod telescopic assembly and a rear cross rod telescopic assembly of the bearing and placing device are respectively provided with a side positioning part, and the side positioning parts are provided with positioning matching parts, so that the bearing and placing device can be longitudinally positioned and disassembled on the positioning parts through the positioning matching parts; because the positioning matching part and the positioning part have longitudinal positioning and guiding functions, and the bearing device has certain pre-assembly effect during assembly, the bearing device can be conveniently, quickly, efficiently and flexibly assembled and disassembled, so that the problems that the bearing device in the prior art can only be assembled accurately by manually adjusting the positions or detaching the front plate without any auxiliary component, the assembly is difficult, the operation is inconvenient and the like are solved, and the bearing device is convenient to assemble, disassemble and maintain daily.

3. The device adopts the mode of bearing to place on the region is put in holding of putting the device, can make the gravity of device can be used for about through holding put the device well on curb plate and left and right sides slide rail set spare, not only can improve the bearing capacity of device, can also avoid it to appear the problem that fracture damaged or dropped at the during operation to guarantee holding of device and put stability, the user can also be according to actual user demand and put the device and demolish and assemble at will, experience with the use that improves the user.

4. The supporting area can be adjusted in longitudinal and transverse sizes through the cooperation of the front and rear transverse rod telescopic assemblies, the middle transverse rod telescopic assemblies, the front and rear movable parts, the middle movable parts, the upper and lower connecting rods, different sizes can be enabled, and/or devices of the same size can be randomly positioned and supported on different sizes, and/or the same size, and/or the supporting areas of different positions, so that the requirements for various types of devices can be met, the problem that the drawer size in the prior art is fixed is effectively solved, the device of a single size can only be placed or the position of the device is fixed is solved, the placing flexibility of the device is improved, and great convenience is provided for the user to place the device.

5. The two ends of the front and rear cross rod telescopic assemblies are assembled in a fixed mode respectively, and the middle position of the front and rear cross rod telescopic assemblies can slide transversely, so that the transverse size of the whole bearing and placing device can be adjusted, the bearing and placing device can be suitable for drawers with different inner widths to use, and the use flexibility and the application range of the bearing and placing device are improved.

6. Well horizontal pole subassembly that stretches out and draws back can longitudinal sliding between the subassembly that stretches out and draws back in the front and back horizontal pole, not only makes the device of putting that can adapt to the different degree of depth place, can also carry out longitudinal sliding to the flexible subassembly of centering horizontal pole when a plurality of devices dismouting simultaneously to the position of transferring out supplies all the other devices to carry out the dismouting, convenience of customers' use.

Comprehensively, it has simple structure reasonable, and the assembly is swift, convenient, firm, low in manufacturing cost, and the device is put characteristics such as disguised good, stability good, and application range is wide, the flexibility height, and the practicality is strong.

Drawings

Fig. 1 is an exploded view of a panel, left and right side plates, a slide rail assembly, and a connecting member according to an embodiment of the present invention.

Fig. 2-4 are schematic views of an assembly structure of the panel, the left and right side plates, the slide rail assembly, and the connecting member according to an embodiment of the present invention.

Fig. 5 is an enlarged schematic view of a portion a in fig. 1.

Fig. 6 is an enlarged schematic view of a portion B in fig. 2.

Fig. 7 is an enlarged schematic view of the structure at C in fig. 3.

Fig. 8 is an enlarged schematic view of the structure at D in fig. 4.

Fig. 9 is a schematic view of an assembly structure of the left and right side plates, the slide rail assembly, the holding device, and the device according to an embodiment of the present invention.

Fig. 10 is a schematic view (partially enlarged) of an assembly structure of the left and right side plates, the slide rail assembly, the holding device, and the device according to an embodiment of the present invention.

Fig. 11 is a schematic view (cross-sectional view) of a device positioning and placing structure according to an embodiment of the utility model.

Fig. 12 is an exploded view of the supporting device and the left and right bases according to an embodiment of the utility model.

Fig. 13 is a schematic view of an assembly structure of the supporting device and the left and right bases according to an embodiment of the utility model.

Fig. 14 is an exploded view of the side positioning element and the left and right bases according to an embodiment of the utility model.

Fig. 15 is a schematic view of an assembly structure of the side positioning element and the left and right bases according to an embodiment of the utility model.

Fig. 16 is an exploded view of the front, middle, rear crossbar telescoping assembly and the front, middle, rear movable member according to an embodiment of the present invention.

Detailed Description

The utility model is further described with reference to the following figures and examples.

Referring to fig. 1-16, the stable assembly structure of the furniture drawer comprises a left side plate 1, a right side plate 1 and a connecting piece 5; the left side plate 1 and the right side plate 1 are sheet metal parts, and front ends of the sheet metal parts are integrally bent to form a front bent part 2; the connecting piece 5 is connected with the front bending part 2 in a matching way, and is provided with a fastening part 4 towards the opposite direction of the front bending part 2.

The front bending part 2 is integrally bent at the front end of the left and right side plates 1 towards the inner side and is provided with a fixing part 6; the connecting piece 5 is provided with a fixed matching part 7 and is detachably connected with the fixed part 6 of the front bending part 2 through the fixed matching part 7.

The connecting piece 5 is made of metal or plastic, and is provided with a fixed matching part 7 on one side and a fastening part 4 on the other side, wherein the fastening part 4 is positioned on the outer sides of the left and right side plates 1 and is independently arranged between the fixing part 6 and/or the fixed matching part 7 and forms a space.

The fastening part 4 is also provided with a fixing part 9, and the fixing part 9 and the fastening part 4 can be matched and connected in a left-right adjusting mode at least.

A pre-positioning matching part is further arranged between the connecting piece 5 and the front bending part 2, the pre-positioning matching part and the front bending part are in pre-positioning matching through the pre-positioning matching part, and the pre-positioning matching part and the front bending part are detachably matched and connected after being positioned.

Specifically, the front bent portion 2 of the present embodiment is integrally bent inward at the front ends of the left and right side plates 1, and is provided with a fixing portion 6 and a prepositioning 30; the connecting piece 5 is made of metal or plastic, and one side of the connecting piece is provided with a fixed matching part 7 and a preset matching position 31; one side of the connecting piece 5 is in positioning fit with the prepositioning 30 of the front bending part 2 in advance through a preset matching position 31, and is detachably connected with the fixing part 6 of the front bending part 2 through a fixing matching part 7 after being positioned; the other side of the connecting piece 5 is provided with a fastening part 4, and the front plate 3 can be fixedly assembled by arranging a fixing piece 9 on the fastening part 4; the fastening part 4 is positioned outside the left and right side plates 1 and is independently arranged with the fixing part 6, and/or the fixing matching part 7, and/or the prepositioning 30, and/or the preset matching position 31 to form a space.

Wherein, fixed part 6 with cross and can set up elasticity piece 8 between the fixed cooperation portion 7, and realize controlling or upper and lower regulation formula cooperation through elasticity piece 8 and be connected.

The structure also comprises a bearing device and a sliding rail component 10; the lower parts of the left and right side plates 1 are respectively provided with a left and right supporting part 11, and the lower parts of the left and right supporting parts 11 are respectively provided with a depending part 12; the left side plate 1 and the right side plate 1 are detachably arranged on the sliding rail assembly 10, and when the sliding rail assembly 10 and the sliding rail assembly 10 are assembled, the sliding rail assembly 10 is leaned on the inner side of the leaning part 12.

A left base 13 and a right base 13 are arranged between the left support part and the right support part 11, and positioning parts 14 are arranged on the left base 13 and the right base 13; the bearing device comprises a transverse rod telescopic component which can bear the positioning placing device 15 and can transversely position and move, the transverse rod telescopic component at least comprises a positioning piece, and a positioning matching part 16 is arranged on the positioning piece; the bearing device is longitudinally positioned, disassembled and sleeved on the positioning parts 14 of the left base 13 and the right base 13 through the positioning matching parts 16 of the positioning pieces.

The positioning part 14 forms a space with the front bending part 2, and/or the fixing part 6, and/or the fixing matching part 7, and/or the fastening part 4; the fixing portion 6, and/or the fixing engagement portion 7, and/or the fastening portion 4 are provided at a height higher than that of the positioning portion 14.

Through the improvement, when a user assembles, the positioning parts 14 can be assembled on the left base 3 and the right base 3 in advance, and then the front plate 3 is assembled, or the assembling sequence is exchanged, so that the user experience is not influenced because only one of the positioning parts is assembled in advance due to high interference. In the present embodiment, it is preferable to provide the positioning portions 14 on the left and right bases 13, to provide the left and right bases 13 on the left and right support portions 11, and to assemble the front plate 3.

In order to facilitate the sleeve-joint assembly between the positioning part 14 and the positioning matching part 16, a guiding part 17 is further arranged between the positioning part 14 and the positioning matching part 16, and the positioning part 14 and the positioning matching part are guided and longitudinally positioned and sleeved through the guiding part 17.

Further, the cross bar telescopic assembly comprises a front cross bar telescopic assembly X, a rear cross bar telescopic assembly X and a middle cross bar telescopic assembly Y.

The front and rear cross bar telescopic assemblies X respectively comprise a middle cross bar 18 and left and right side cross bars 19; the positioning pieces comprise side positioning pieces 20 which are matched and connected with the left and right side cross rods 19; the outer ends of the left and right cross bars 19 are respectively fixedly connected with the side positioning pieces 20, and the inner ends are respectively sleeved with the two ends of the middle cross bar 18 in a positioning type sliding manner.

The side positioning piece 20 is concavely provided with a positioning matching part 16; the left base 13 and the right base 13 are convexly provided with at least one positioning part 14; the bearing device is longitudinally positioned and assembled on the positioning part 14 through the positioning matching part 16.

Due to the sleeving effect between the positioning matching part 16 and the positioning part 14, the bearing device can be fixed on the left base 13 and the right base 13 in the front-back and left-right directions through self gravity after being assembled, the bottom of the bearing device is supported on the left base 13 and the right base 13, and the bearing device can also be fixed through the gravity of the device 15 after the device 15 is placed.

The middle cross bar telescopic component Y is positioned between the front cross bar telescopic component X and the rear cross bar telescopic component X and comprises a middle movable rod 21 and left and right movable rods 22; the positioning piece also comprises a middle positioning piece 23 which is matched and connected with the left and right movable rods 22; the outer ends of the left and right movable rods 22 are respectively fixedly connected with the middle positioning piece 23 and are respectively supported on the left and right bases 13 through the middle positioning piece 23 in a longitudinal sliding and/or positioning manner, and the inner ends of the left and right movable rods 22 are respectively sleeved with the two ends of the middle movable rod 21 in a positioning manner in a sliding manner.

At least one placeable device 15 and a receiving area with adjustable longitudinal and/or transverse dimensions are formed between the front and rear crossbar extension assemblies X and the middle crossbar extension assembly Y.

Furthermore, a front moving part 24 and a rear moving part 24 are respectively transversely movable on the front cross rod telescopic component and the rear cross rod telescopic component X, and a middle moving part 25 is transversely movable on the middle cross rod telescopic component Y; the upper parts of the front and rear movable pieces 24 and the middle movable piece 25 are detachably provided with an upper connecting rod 26, and the lower parts of the front and rear movable pieces are detachably provided with a lower connecting rod 27.

The middle cross bar telescopic component Y, the middle positioning piece 23 and the middle movable piece 25 synchronously slide longitudinally between the front cross bar telescopic component X and the rear cross bar telescopic component X through the matching of the upper connecting rod and the lower connecting rod, and are positioned and supported on the left base 13 and the right base 13 through the middle positioning piece 23 and/or the middle movable piece 25 at least when stressed, so as to position and/or adjust the longitudinal dimension of the bearing area.

The front and rear moving members 24 and the middle moving member 25 transversely slide on the front and rear cross bar telescopic assemblies X and the middle cross bar telescopic assembly Y, and drive the upper connecting rod 26 and the lower connecting rod 27 to synchronously transversely slide on the front and rear cross bar telescopic assemblies X and the middle cross bar telescopic assembly Y during transverse sliding so as to adjust the transverse size of the bearing area.

When the device 15 is placed in the receiving area, its bottom bearing type positioning is supported on the lower link 27, and the side front-back and/or left-right positioning acts on the upper link 26, and/or the front-back crossbar expansion assembly X, and/or the middle crossbar expansion assembly Y.

The device 15 is positioned and supported on the left and right bases 13 by the side positioning members 20, and/or the middle positioning members 23, and/or the front and rear movable members 24, and/or the middle movable member 25 after placement, and is supported and acted on the left and right support portions 11 and the slide rail assembly 10 by the left and right bases 13.

The foregoing is a preferred embodiment of the present invention, and the basic principles, principal features and advantages of the utility model are shown and described. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the present invention, but various changes and modifications may be made without departing from the spirit and scope of the utility model as defined by the appended claims and their equivalents.

Claims

1. The utility model provides a firm assembly structure of furniture drawer, includes left and right sides curb plate (1), its characterized in that: also comprises a connecting piece (5); the left side plate (1) and the right side plate (1) are sheet metal parts, and the front ends of the sheet metal parts are integrally bent to form a front bent part (2); the connecting piece (5) is connected with the front bending part (2) in a matching way, and a fastening part (4) is arranged in the opposite direction of the front bending part (2).

2. The stable assembly structure of furniture drawer according to claim 1, characterized in that: the front bending part (2) is integrally bent at the front end of the left side plate (1) and the right side plate (1) towards the inner side and is provided with a fixing part (6); the connecting piece (5) is provided with a fixed matching part (7) and is detachably connected with the fixed part (6) of the front bending part (2) through the fixed matching part (7).

3. The stable assembly structure of furniture drawer according to claim 2, characterized in that: the connecting piece (5) is made of metal or plastic, a fixed matching part (7) is arranged on one side of the connecting piece, a fastening part (4) is arranged on the other side of the connecting piece, the fastening part (4) is positioned on the outer sides of the left side plate and the right side plate (1), and the connecting piece and the fixing part (6) and/or the fixed matching part (7) are independently arranged to form a space.

4. The stable assembly structure of furniture drawer according to claim 1, characterized in that: the fastening part (4) is also provided with a fixing part (9), and the fixing part (9) and the fastening part (4) can be matched and connected in a left-right adjustable mode.

5. The stable assembly structure of furniture drawer according to claim 1, characterized in that: and a pre-positioning matching part is further arranged between the connecting piece (5) and the front bending part (2), and the pre-positioning matching part and the front bending part are in pre-positioning matching through the pre-positioning matching part and are in detachable matching connection after positioning.

6. A stable assembling structure of furniture drawer according to any of claims 1-5, characterized in that: the front bending part (2) is integrally bent at the front end of the left side plate (1) and the right side plate (1) towards the inner side, and a fixing part (6) and a prepositioning part (30) are arranged on the front bending part; the connecting piece (5) is made of metal or plastic, and one side of the connecting piece is provided with a fixed matching part (7) and a preset matching position (31); one side of the connecting piece (5) is in pre-positioning fit with a pre-positioning part (30) of the front bending part (2) through a pre-positioning fit position (31), and is in detachable fit connection with a fixing part (6) of the front bending part (2) through a fixing fit part (7) after positioning; a fastening part (4) is arranged on the other side of the connecting piece (5); the fastening part (4) is positioned on the outer side of the left side plate and the right side plate (1), is independently arranged with the fixing part (6), and/or the fixing matching part (7), and/or the prepositioning part (30), and/or the preset matching part (31), and forms a space.

7. The stable assembly structure of furniture drawer according to claim 6, characterized in that: the device also comprises a bearing device and a sliding rail component (10); the lower parts of the left and right side plates (1) are respectively provided with a left and right supporting part (11), and the lower parts of the left and right supporting parts (11) are respectively provided with a depending part (12); the left side plate and the right side plate (1) are detachably arranged on the sliding rail assembly (10), and when the sliding rail assembly and the sliding rail assembly are assembled, the sliding rail assembly (10) depends on the inner side of the depending part (12);

a left base (13) and a right base (13) are arranged between the left supporting part and the right supporting part (11), and positioning parts (14) are arranged on the left base and the right base (13); the bearing device comprises a bearing type positioning device (15) and a transverse rod telescopic component capable of transversely positioning and moving, the transverse rod telescopic component at least comprises a positioning piece, and a positioning matching part (16) is arranged on the positioning piece; the bearing device is longitudinally positioned, disassembled and assembled on the positioning parts (14) of the left base and the right base (13) through the positioning matching parts (16) of the positioning pieces.

8. The stable assembly structure of furniture drawer according to claim 7, characterized in that: a distance is formed between the positioning part (14) and the front bending part (2) and/or the fixing part (6) and/or the fixing matching part (7) and/or the fastening part (4) and/or the prepositioning part (30) and/or the preset matching part (31); the height of the fixing part (6) and/or the fixing matching part (7) and/or the fastening part (4) and/or the prepositioning part (30) and/or the preset matching position (31) is higher than that of the positioning part (14);

a guiding part (17) is arranged between the positioning part (14) and the positioning matching part (16), and the positioning part and the positioning matching part are in guiding type longitudinal positioning sleeve joint through the guiding part (17).

9. The stable assembly structure of furniture drawer according to claim 7, characterized in that: the transverse rod telescopic assembly comprises a front transverse rod telescopic assembly, a rear transverse rod telescopic assembly (X) and a middle transverse rod telescopic assembly (Y);

the front and rear cross bar telescopic assemblies (X) respectively comprise a middle cross bar (18) and left and right side cross bars (19); the positioning piece comprises a side positioning piece (20) which is matched and connected with a left side cross rod and a right side cross rod (19); the outer ends of the left and right lateral cross bars (19) are respectively fixedly connected with lateral positioning pieces (20), and the inner ends of the left and right lateral cross bars are respectively in positioning type sliding sleeve joint with the two ends of the middle cross bar (18);

the side positioning piece (20) is concavely provided with a positioning matching part (16); the left base and the right base (13) are convexly provided with at least one positioning part (14); the bearing device is longitudinally positioned and disassembled on the positioning part (14) through a positioning matching part (16);

the middle cross bar telescopic component (Y) is positioned between the front cross bar telescopic component and the rear cross bar telescopic component (X) and comprises a middle movable rod (21) and left and right movable rods (22); the positioning piece also comprises a middle positioning piece (23) which is matched and connected with the left and right movable rods (22); the outer ends of the left and right movable rods (22) are respectively fixedly connected with the middle positioning piece (23) and are respectively supported on the left and right bases (13) through the middle positioning piece (23) in a longitudinally sliding and/or positioning manner, and the inner ends of the left and right movable rods (22) are respectively in positioning type sliding sleeve connection with the two ends of the middle movable rod (21);

at least one placeable device (15) and a bearing area with adjustable longitudinal and/or transverse dimensions are formed between the front and rear cross bar telescopic assemblies (X) and the middle cross bar telescopic assembly (Y).

10. The stable assembly structure of furniture drawer according to claim 9, characterized in that: the front and rear cross bar telescopic assemblies (X) are respectively provided with a front and rear movable part (24) in a transverse movable manner, and the middle cross bar telescopic assembly (Y) is provided with a middle movable part (25) in a transverse movable manner; the upper parts of the front and rear movable pieces (24) and the middle movable piece (25) are detachably provided with an upper connecting rod (26), and the lower parts of the front and rear movable pieces are detachably provided with a lower connecting rod (27);

the middle transverse rod telescopic component (Y), the middle positioning piece (23) and the middle moving piece (25) synchronously and longitudinally slide between the front transverse rod telescopic component and the rear transverse rod telescopic component (X) through the matching of the upper connecting rod and the lower connecting rod, and are positioned and supported on the left base (13) and the right base (13) through the middle positioning piece (23) and/or the middle moving piece (25) at least when stressed, so as to position and/or adjust the longitudinal size of a bearing area;

the front and rear moving parts (24) and the middle moving part (25) transversely slide on the front and rear cross rod telescopic assemblies (X) and the middle cross rod telescopic assemblies (Y) and drive the upper connecting rod (26) and the lower connecting rod (27) to synchronously transversely slide on the front and rear cross rod telescopic assemblies (X) and the middle cross rod telescopic assemblies (Y) during transverse sliding so as to adjust the transverse size of the bearing area;

when the device (15) is placed in the bearing area, the bottom of the device is supported on the lower connecting rod (27) in a bearing type positioning mode, and the front and back and/or left and right positioning of the side part acts on the upper connecting rod (26), and/or the front and back cross rod telescopic assembly (X) and/or the middle cross rod telescopic assembly (Y);

after the device (15) is placed, the device is positioned and supported on the left base (13) and the right base (13) through the side positioning piece (20), the middle positioning piece (23), the front movable piece (24) and the rear movable piece (25), and then the device is supported and acted on the left supporting part (11) and the right supporting part (11) and the sliding rail assembly (10) through the left base (13) and the right base (13).