CN111067272B

CN111067272B - Thin-edge file cabinet with few seams and good smoothness

Info

Publication number: CN111067272B
Application number: CN202010149886.1A
Authority: CN
Inventors: 杨飞; 郜宏武
Original assignee: Luoyang Zhaoxin Office Furniture Co ltd
Current assignee: Luoyang Zhaoxin Office Furniture Co ltd
Priority date: 2020-03-06
Filing date: 2020-03-06
Publication date: 2021-08-10
Anticipated expiration: 2040-03-06
Also published as: CN111067272A

Abstract

The invention introduces a thin-edge file cabinet with few seams and good smoothness, which comprises a top plate, an inner top plate, a back plate, a left side plate, a right side plate, a bottom plate, a left door plate, a right door plate and a front frame, wherein the side plate and the top plate are mutually matched in structure, so that the thin-edge file cabinet can be punched and processed on one thin iron plate, the cost is low, the matching relation among parts is accurate, the three-dimensional positioning of the side plate can be completed, the whole component is simple and reliable, the processing amount is small, the cost is low, and the appearance is attractive and elegant; the U-shaped groove formed by the left side plate is used as a back plate insertion groove, and the left side of the left folded edge of the back plate is inserted, so that the structure is simple and reliable, the appearance is attractive, no processing surface is formed, and the processing cost is low; the size of the edge of the front frame is reduced, the space utilization rate is improved, and raw materials are saved.

Description

Thin-edge file cabinet with few seams and good smoothness

Technical Field

The invention relates to the technical field of office file cabinets, in particular to a thin-edge file cabinet with few seams and good smoothness.

Background

The file cabinet and the file cabinet are used for storing files and are widely applied to various units; the file cabinet mainly comprises a top plate, a bottom plate, a left side plate, a right side plate, a back plate, a left door, a right door, a front frame and the like, but the existing file cabinet is generally made of an iron sheet plate through stamping, bending and welding or riveting.

At present, because the labor cost is higher and higher, automation is difficult to realize in the stamping and bending processes, a large amount of manpower is needed to operate, the welding or riveting process of a plurality of furniture factories is caused, and the bottleneck process influencing the productivity is formed. In addition, in the welding or riveting process, the proficiency of workers greatly affects the quality and the assembly property of the punched products, the problems of welding release and the like are easily caused, and the stability of the product performance is seriously affected.

Moreover, with the social progress, the society also puts forward the technical requirements for reducing the consumption of raw materials in the aspects of raw material consumption, product beauty and the like, consumers also need to see more beautiful products, and the requirements for the quality and the details of office furniture are more refined. For example, there is a demand for weight reduction, use of thinner iron sheets, and reduction in the visible finish in appearance. Avoiding edges and corners, etc., which all put new requirements on the office file cabinet.

Disclosure of Invention

The invention aims to solve the technical problem of providing a thin-edge file cabinet with few seams and good smoothness, so that the problems of poor appearance, high raw material consumption and the like caused by the fact that the existing file cabinet is rough in appearance, particularly excessive seams exist on the whole appearance, and recesses, convex ridges, exposed hems and grooves are formed in the file cabinet.

In order to solve the technical problems, the invention adopts the following technical scheme:

a thin-edge file cabinet with few seams and good smoothness comprises a top plate, an inner top plate, a back plate, a left side plate, a right side plate, a bottom plate, a left door plate, a right door plate and a front frame; wherein:

the top plate is positioned at the top of the file cabinet and comprises a rectangular top plate main body, a top plate left folding edge, a top plate right folding edge, a top plate reinforcing plate, a top plate decorative folding edge, a top plate front folding edge and a top plate rear folding edge; the top plate left folding edge, the top plate right folding edge, the top plate front folding edge and the top plate rear folding edge are integrated with the top plate main body into a whole and are formed by processing a first thin iron plate metal plate;

the left folding edge and the right folding edge of the top plate are arranged in the left and right directions of the top plate main body and are formed by respectively punching and inward folding first thin iron plates on the left side and the right side of the top plate main body; the length of the top plate left folding edge and the length of the top plate right folding edge are smaller than the width of the top plate main body, four symmetrical avoiding grooves are formed between the two ends of the top plate left folding edge and the top plate right folding edge and between the two ends of the top plate left folding edge and the top plate main body, and top plate decorative edges are arranged between the outer sides of the avoiding grooves and the top plate main body, so that a machined surface cannot be seen from the side surface, edges and corners of the top plate can be reduced, and people are prevented from being injured; at least two side plate fixing holes and at least one side plate limiting groove are formed in the left folded edge of the top plate;

the side plate fixing hole comprises a rectangular slotted hole and a circular slotted hole, and the diameter of the circular slotted hole is larger than that of the side plate fixing convex piece, so that the side plate fixing convex piece can be inserted into the circular slotted hole;

the diameter of the side plate fixing convex part is specifically the distance between the outer side of a left crescent insertion piece and the outer side of a right crescent insertion piece of the side plate fixing convex part;

the width of the rectangular slotted hole is smaller than the diameter of the side plate fixing convex piece, so that the side plate fixing convex piece can move along the length direction of the rectangular slotted hole after being inserted into the side plate fixing hole through the circular slotted hole, and the left side plate is clamped and is limited up and down;

the side plate limiting groove is used for accommodating a side plate limiting piece, so that after the side plate limiting piece is bent and inserted into the side plate limiting groove, the left side plate is limited in the left-right direction by the side plate limiting groove, and the left side plate and the top plate are completely fixed together;

first mounting seams which are consistent with the thickness of the left side plate or slightly larger than the thickness of the left side plate are reserved between the left folding edge of the top plate, the right folding edge of the top plate and the top plate main body, so that the side plate fixing convex piece can be inserted into the first mounting seams;

the top plate front folding edge and the top plate rear folding edge are arranged in the front-rear direction of the top plate main body; the front folded edge of the top plate is a backward folded edge arranged at the front end of the lower part of the top plate main body and is parallel to the top plate main body; a space is reserved between the front folding edge of the top plate and the top plate main body, and the space is a front frame insertion groove and is used for inserting the upper frame front folding edge of the upper frame of the front frame;

an inner top plate inserting seam is reserved between the top plate rear folded edge and the top plate main body and used for inserting the rear end horizontal folded edge of the inner top plate and the back plate upper folded edge together to enable the top plate, the inner top plate and the back plate to be combined together;

the left side plate comprises a rectangular left side plate main body, a left side plate upper folding edge, a left side plate lower folding edge, a left side plate front folding edge, a left side plate rear folding edge and a bottom plate fixing strip, wherein the left side plate main body, the left side plate upper folding edge, the left side plate lower folding edge, the left side plate front folding edge and the left side plate rear folding edge are of an integrated structure and are formed by processing a second thin iron plate metal plate;

the upper hem of the left side plate comprises an upper hem main body, at least two side plate fixing convex pieces and at least one side plate limiting piece, wherein the side plate fixing convex pieces and the side plate limiting pieces are arranged on the upper hem main body; the side plate fixing convex part is of a structure formed by stamping an upper folding main body and comprises a left side vertical piece, a right side vertical piece, a left crescent insertion piece and a right crescent insertion piece, a middle connection piece which is integrated with the upper folding main body into a whole is arranged between the left side vertical piece and the right side vertical piece, and the distance between the left side vertical piece and the outer side surface of the right side vertical piece is slightly smaller than the width of the rectangular slotted hole, so that the left side vertical piece and the right side vertical piece can be clamped and fixed; the left crescent insertion piece is connected with the left vertical piece, and the right crescent insertion piece is connected with the right vertical piece and is parallel to the upper folding main body;

the position of the side plate limiting sheet corresponds to the side plate limiting groove and is a rectangular sheet formed by punching two processing seams from the upper folding edge main body; the width of the rectangular sheet in the front-back direction is based on the principle that the rectangular sheet can be inserted into the side plate limiting groove, so that the side plate limiting sheet can be bent into the side plate limiting groove and then fixed and limited on the left side plate under the action of external force;

the front end part and the rear end part of the upper folded edge of the left side plate are provided with avoidance notches for avoiding the back plate and the front frame; the front hem of the left side plate is a rectangular hem parallel to the left side plate main body formed by bending the second thin iron plate towards the rear side from the front edge of the left side plate main body, and a front frame mounting groove for accommodating the flat hem at the front end of the left frame of the front frame to insert is arranged between the front hem of the left side plate main body and the left side plate main body;

the front-back width dimension of the front folded edge of the left side plate is smaller than the dimension of the flat folded edge at the front end of the left frame of the front frame; therefore, after the front end flat folding edge part of the left frame is inserted into the front frame mounting groove, the front folding edge of the left side plate cannot be overlapped with the rear end flat folding edge of the left frame;

the rear folded edge of the left side plate comprises a first integrated vertical folded edge, a second integrated vertical folded edge, an upper end inner triangular plate, an upper end outer triangular plate, a lower end inner triangular plate and a lower end outer triangular plate, wherein the upper end inner triangular plate, the upper end outer triangular plate, the lower end inner triangular plate and the lower end outer triangular plate are all formed by processing a second thin iron plate through a sheet metal process; the second vertical folding edge is parallel to the left side plate main body and is formed by bending a second thin iron plate from the edge of the first vertical folding edge to the inner side;

thus, a U-shaped groove is formed at the rear end of the left side plate main body and among the left side plate main body, the first vertical folding edge and the second vertical folding edge, and the U-shaped groove is a back plate insertion groove and is used for inserting the left side of the left folding edge of the back plate into the U-shaped groove for fixing and limiting;

the bottom edge of the triangular plate inside the upper end face is connected with the upper edge of the first vertical folding edge, and the bottom edge of the triangular plate outside the upper end face is connected with the upper edge of the second vertical folding edge and is positioned on the same plane with the upper folding edge of the left side plate; the rear end of the upper hem of the left side plate is provided with a cutting angle for being matched with the inner triangular plate of the upper end face and the outer triangular plate of the upper end face, so that the sizes of the inner triangular plate of the upper end face, the outer triangular plate of the upper end face and the upper hem of the left side plate are matched with those of the upper hem of the left side plate, and the inner triangular plate, the outer triangular plate of the upper end face and the upper hem of the left side plate are positioned on the same plane and are not overlapped with each other;

more specifically, the inner triangular plate of the upper end surface and the outer triangular plate of the upper end surface are all isosceles right triangles; the cutting angle is degree; the arrangement can lead the adjacent plates to be matched and spliced on a plane without overlapping or leaving gaps after being bent;

the bottom edge of the triangular plate in the lower end surface is connected with the lower edge of the first vertical folding edge, and the bottom edge of the triangular plate out of the lower end surface is connected with the lower edge of the second vertical folding edge and is positioned on the same plane with the lower folding edge of the left side plate;

the beneficial effects of the design method are as follows: the inner triangular plate of the upper end surface and the outer triangular plate of the upper end surface are matched with each other in size and folding angles, and the inner triangular plate of the lower end surface and the outer triangular plate of the lower end surface are matched with each other in size and folding angles, so that the inner and outer triangular plates of the upper and lower end surfaces after sheet metal machining and the upper and lower folding edges of the left and right side plates are positioned on the same plane and are not overlapped with each other, and therefore the effects of covering the inner space and being attractive are achieved; the problems that the corresponding part of the file cabinet in the prior art is easy to expose a processing surface, sharp corners are left on the outer side of the processing surface and need chamfering processing, and gaps are easily left between the upper and lower hems of the left and right side plates and the adjacent vertical hems are also avoided, and the file cabinet is attractive and elegant;

the space between the second vertical folding edge and the left side plate main body is based on the principle that the second vertical folding edge can be tightly inserted into the back plate;

the lower hem of the left side plate is a hem which is formed by bending the second thin iron plate to the right side on the lower edge of the left side plate main body and is vertical to the left side plate main body, and is used for reinforcing the lower part of the left side plate main body;

the lower part of the left side plate main body can be reinforced by designing the lower folded edge of the left side plate; the problem that sharp corner processing surfaces are left at the bottom of the left side plate, and people are easily injured when the cabinet is moved is solved;

the combination of the rear end angle of the lower folded edge of the left side plate, the inner triangular plate of the lower end surface and the outer triangular plate of the lower end surface is consistent with the corresponding part of the upper folded edge of the left side plate;

when the clamping device is used, the clamping piece on the left side of the left baseboard is bent to clamp the lower folded edge of the left side board; bending the card on the right side of the bottom foot plate on the right side to clamp the lower folded edge of the right side plate, so that the bottom foot plate cannot move up and down and is further fixed;

the bottom plate fixing strip is a metal strip fixed on the lower part of the left side plate main body in a welding manner, a gap is reserved between the metal strip and the left side plate main body, the gap is an insertion seam of the left folded edge of the bottom plate, and the left folded edge of the bottom plate is inserted into the insertion seam to fix the bottom plate;

more specifically, the bottom plate fixing strip is provided with two bottom plate fixing grooves which are used for being combined with the stamping bulges of the bottom plate to prevent the bottom plate from moving up and down and left and right;

the right side plate and the left side plate are symmetrically arranged;

the inner top plate comprises an inner top plate main body integrally formed by a third thin iron plate, a front end vertical folding edge, a front end horizontal folding edge, a rear end vertical folding edge, a rear end horizontal folding edge, a left side vertical folding edge and a right side vertical folding edge;

the main body of the inner top plate is rectangular;

the front end vertical folding edge is formed by bending a third thin iron plate upwards along the front end of the inner top plate main body and is vertical to the inner top plate main body, and at least two fixing bulges are arranged on the front end vertical folding edge and are used for being clamped into inner top plate fixing grooves arranged on the front frame;

the front end horizontal folded edge is formed by a third thin iron plate from the upper edge of the front end vertical folded edge to a rear metal plate and is parallel to the inner top plate main body, so that the effects of attractiveness and front end vertical folded edge reinforcement are achieved;

the rear end vertical folding edge is a folding edge which is formed by bending the third thin iron plate upwards along the inner top plate main body and is vertical to the inner top plate main body;

the rear end horizontal folding edge is a folding edge which is formed by a metal plate from the upper edge of the rear end vertical folding edge to the rear, is parallel to the main body of the inner top plate, and the size of the rear end horizontal folding edge in the front-rear direction is smaller than or equal to that of the rear folding edge of the top plate so as to ensure that the rear end horizontal folding edge can be completely inserted into the insertion seam of the inner top plate;

the heights of the front end vertical folding edge, the rear end vertical folding edge, the left side vertical folding edge and the right side vertical folding edge are consistent;

the back plate comprises an integrated rectangular back plate main body formed by a fourth thin iron plate metal plate, a back plate upper folding edge, a back plate lower flat folding edge, a back plate lower straight folding edge, a back plate left folding edge and a back plate right folding edge; a bottom plate rear fixing strip and a J-shaped bottom reinforcing piece are welded on the back plate main body; wherein:

the rear fixing strip of the bottom plate is welded on the front side surface of the lower part of the back plate main body, and a gap is reserved between the rear fixing strip of the bottom plate and the back plate main body and used for inserting the rear hem of the bottom plate;

the bottom reinforcing pieces are arranged at the lower part and the rear side of the back plate main body and welded with the back plate main body at the rear side of the back plate main body so as to reinforce the structural strength of the back plate; the bottom reinforcing part comprises a reinforcing part rear vertical plate, a reinforcing part bottom plate and a reinforcing part front vertical plate; wherein: the reinforcing piece rear vertical plate is a J-shaped rear end vertical plate part, the reinforcing piece bottom plate is a J-shaped bottom part, the reinforcing piece front vertical plate is a J-shaped front end vertical plate part, the difference value between the height of the reinforcing piece front vertical plate and the lower straight folding edge of the back plate is equal to the thickness of the fourth thin iron plate, and the height of the reinforcing piece front vertical plate is smaller than the height of the reinforcing piece rear vertical plate;

the lower flat folding edge of the back plate is arranged at the rear side of the lower edge of the back plate main body, is formed by machining a fourth thin iron plate backwards and horizontally along the rear edge of the back plate main body and is vertical to the back plate main body;

the lower straight folded edge of the back plate is formed by downwards sheet metal machining a fourth thin iron plate along the rear edge of the lower flat folded edge of the back plate and is parallel to the main body of the back plate; the left end and the right end of the lower straight folding edge of the back plate are provided with notches, so that the first vertical folding edge and the second vertical folding edge of the left side plate and the right side plate can be inserted into the notches;

the left folded edge of the back plate is an L-shaped folded edge connected with the back plate main body, when the back plate is installed, the left side of the left folded edge of the back plate is inserted into a U-shaped groove formed by the left side plate main body, the first vertical folded edge and the second vertical folded edge of the left side plate, and the right side of the left folded edge of the back plate is inserted into the corresponding part of the right side plate, so that the back plate, the left side plate and the right side plate are fixed together; the right folded edge of the back plate and the left folded edge of the back plate are symmetrically arranged;

the upper hem of the back plate is a horizontal hem of a backward metal plate of the fourth thin iron plate along the back plate main body, and is used for fixing the back plate by inserting the upper hem of the back plate into the inner top plate insertion seam of the top plate;

more specifically, the left side and the right side of the back plate main body are also provided with laminate support piece mounting grooves;

the bottom plate comprises an integrated bottom plate main body formed by a fifth thin iron plate metal plate, a bottom plate front folding edge, a bottom plate rear folding edge, a bottom plate left folding edge, a bottom plate right folding edge and a bottom plate reinforcing rib welded on the bottom plate main body;

the front folded edge of the bottom plate is a folded edge formed by vertically and downwards arranging a fourth thin iron plate along the front edge of the bottom plate main body and is fixed with the front frame by welding or screws;

the rear folded edge of the bottom plate is formed by vertically downwards arranging a fourth thin iron plate along the rear edge of the bottom plate main body by a metal plate;

the left folding edge and the right folding edge of the bottom plate are respectively folding edges formed by downwards and vertically stamping a fourth thin iron plate along the left edge and the right edge of the bottom plate main body, and the left folding edge and the right folding edge of the bottom plate are both provided with at least two stamping bulges which are matched with bottom plate fixing grooves on the bottom plate fixing strip to fix the bottom plate and prevent the bottom plate from moving up, down, left and right;

the front frame comprises an upper frame, a lower frame, a left frame, a right frame and four corner connectors;

the upper frame comprises an upper frame main body of an integrated structure formed by processing a sixth thin iron plate, and the upper frame main body comprises an upper frame bottom edge, an upper frame front folding edge of a Z-shaped structure, an upper frame front straight folding edge, an upper frame rear straight folding edge and an upper frame flat folding edge;

the upper frame front folding edge comprises an upper frame front end flat folding edge, an upper frame connecting bent part and an upper frame rear end flat folding edge; the upper frame connecting bent part divides the front folded edge of the upper frame into parts which are parallel to each other and have different heights, namely a front flat folded edge of the upper frame and a rear flat folded edge of the upper frame; the height difference between the upper frame front end flat folding edge and the upper frame rear end flat folding edge is the thickness of the first thin iron plate forming the top plate, so that the top plate and the front frame are matched and inserted, and the heights of the lower parts are consistent;

the upper frame flat folding edge is positioned in the middle of the upper frame, and the front edge and the rear edge of the upper frame flat folding edge are respectively an upper frame front straight folding edge and an upper frame rear straight folding edge;

more specifically, the front straight folded edge of the upper frame can be provided with an anti-collision corner pad mounting hole and a latch hook hanging groove;

the rear straight folded edge of the upper frame is an L-shaped folded edge, and is connected with the flat folded edge of the upper frame; an inner top plate fixing groove matched with the fixing bulge of the inner top plate is arranged on the straight folded edge at the back of the upper frame;

the four corner connectors are respectively welded at the four corners of the front frame main body to strengthen the strength of the front frame and fix the upper frame, the lower frame, the left frame and the right frame together;

the left frame structure is consistent with the upper frame, has the same or different size and is arranged at the position with the difference degree with the upper frame except the matching structure for installing the door panel and the door lock; the left frame is of an integrated structure and comprises a left frame bottom edge, a left frame front folding edge of a Z-shaped structure, a left frame front straight folding edge, a left frame rear straight folding edge and an upper frame flat folding edge; a hinge mounting hole; the left frame front folding edge is consistent with the upper frame front folding edge in structure, and also comprises a left frame front end flat folding edge, a left frame connecting bent part and a left frame rear end flat folding edge; the left frame connecting bent part divides the left frame front folding edge into parts which are parallel to each other and have different heights, namely a left frame front end flat folding edge and a left frame rear end flat folding edge; the height difference between the left frame front end flat folding edge and the left frame rear end flat folding edge is the thickness of a first thin iron plate forming the left side plate; after the front folding edge of the left side plate is inserted, the left and right directions are parallel and level with the flat folding edge at the rear end of the left frame; the technical effects of beautiful appearance, tight combination and increased strength are achieved;

a hinge mounting hole for mounting a left door plate is formed in the bottom edge of the left frame, and the left door plate is connected with the left frame through a hinge;

more specifically, the bottom edge of the left frame is also provided with a row of holes for mounting the movable laminate; the number and the positions of the arranged holes correspond to the mounting grooves of the laminate support piece;

the right frame and the left frame are basically consistent in structure, and are symmetrical except for the fact that the right frame and the left frame are different in structure of matching a door panel and a door lock;

the lower frame is of an integrated structure and is formed by processing a seventh thin iron plate through a metal plate; comprises a horizontal support part in the shape of a door and a vertical support part in the shape of a transverse door;

the horizontal support part comprises a horizontal support transverse edge, a horizontal support front vertical edge and a horizontal support rear vertical edge; the front vertical edge of the horizontal support and the rear vertical edge of the horizontal support are respectively arranged at the front side and the rear side of the horizontal transverse edge of the horizontal support;

a vertical support portion; comprises a vertical support front vertical edge, a vertical support upper horizontal edge and a vertical support lower bottom edge; the upper horizontal edge of the vertical support and the lower bottom edge of the vertical support are respectively arranged at the upper side and the lower side of the front vertical edge of the vertical support; the upper horizontal edge of the vertical support is connected with the front vertical edge of the horizontal support;

a front frame inserting seam is arranged between the top plate front folding edge and the top plate main body and is used for inserting an upper frame front folding edge of an upper frame of the front frame;

preferably; the end part of the lower bottom edge of the vertical support is provided with a vertical reinforcing folded edge;

the front vertical edge of the horizontal support is connected with the upper horizontal edge of the vertical support; the horizontal transverse edge of the horizontal support is consistent with the front and back dimensions of the flat folding edge of the upper frame;

the left door plate and the right door plate are respectively connected with the left frame and the right frame through hinges to serve as file cabinet doors.

More specifically, the thin-edge file cabinet further comprises two bottom plates, and the bottom plates are fixed on the front frame and the back plate through screws respectively.

More specifically, the structure of the footing plate is: the footing plate is formed by constructing an eighth thin iron plate metal plate and comprises a rectangular footing plate upper plate, four supporting vertical plates at four edges below the footing plate upper plate and four supporting bottom plates arranged at the outer sides of the edges of the four supporting vertical plates; the four supporting vertical plates are respectively a left supporting vertical plate arranged on the left side edge of the upper plate of the base plate, a right supporting vertical plate arranged on the right side edge of the upper plate of the base plate, a front supporting vertical plate arranged on the front side edge of the upper plate of the base plate and a rear supporting vertical plate arranged on the rear side edge of the upper plate of the base plate; the four supporting bottom plates are respectively a left supporting bottom plate arranged on the outer side of the left supporting vertical plate, a right supporting bottom plate arranged on the outer side of the right supporting vertical plate, a front supporting bottom plate arranged on the outer side of the front supporting vertical plate and a rear supporting bottom plate arranged on the outer side of the rear supporting vertical plate;

the front end and the rear end on the upper plate of the base plate are respectively provided with a screw connecting hole, the corresponding supporting vertical plate and the right supporting vertical plate are respectively provided with at least one card, and the cards are formed by stamping the corresponding supporting vertical plate metal plates.

During assembly, corresponding holes are formed in the front frame and the back plate, the front end and the rear end of the bottom foot plate are fixed to the front frame and the back plate through screws respectively, and the clamping piece of the bottom foot plate is bent to clamp the lower folded edges of the left side plate and the right side plate, so that the front frame and the back plate can be fixed.

When the clamping device is used, the clamping piece on the left side of the left baseboard is bent to clamp the lower folded edge of the left side board; and bending the card on the right side of the bottom foot plate on the right side to enable the card to tightly clamp the lower folded edge of the right side plate, so that the bottom foot plate can be fixed.

Further specifically, the thin-edge file cabinet is further provided with a laminate, the laminate can be provided with a support member through a row of holes arranged on the left frame and the right frame and a laminate support member mounting groove arranged on the back plate, and then the laminate is supported between the left frame and the right frame.

Further specifically, the hinge mounting holes are arranged and matched according to the mounting requirements of the hinge.

The corner brace, the hinge, the right door plate, the left door plate, the corner pad and the movable laminate which are related to the thin-edge file cabinet are all products which are publicly sold in the prior art and can be commercially purchased from the market.

The thin iron plate referred to in this document specifically means an iron plate having a thickness of 0.3mm to 1.5 mm.

The specific dimensions of the insertion slot referred to in this document are to be determined according to the intended purpose, in order to meet the criteria for insertably fixing the counterpart.

The terms slightly larger, slightly smaller and the like in this document are only used if the fitting is satisfied. The size difference is 0.1-1.5mm for the thickness related slightly larger or slightly smaller than the difference; the difference of the sizes is 0.3-5mm according to the length and the width.

The directions of the front, the back, the left, the right, the upper and the lower are all referred to by the direction of the whole file cabinet after the thin-edge file cabinet is assembled.

The matching structure for installing the door panel and the door lock is a structure relating to the positioning, matching, installing and locking functions of the door panel and the door lock; the door lock specifically comprises a hinge mounting hole, a corresponding lock hole of the door lock, and other structures related to the positioning, matching, mounting and locking functions of the door plate and the door lock. The fitting structure of the installation door plate and the door lock is the prior art.

This few well chiffon filing cabinet's of planarization curb plate fixed protruding piece of seam, the structure of mutually supporting of curb plate fixed orifices and curb plate spacing groove of the spacing piece of curb plate and roof, moreover, the steam generator is simple in structure, all can just can finish through simple punching press technology on a thin iron plate, even need not the cutting process, more need not more complicated welding process, moreover, the steam generator is simple to operate, cold working does not produce heat altered shape, low in processing cost, the size is easy to control, the cooperation relation between the part is accurate, can be about the curb plate spacing from top to bottom and control through the fixed protruding piece of curb plate, it is spacing around can carrying out the curb plate through simple insertion and the buckling of the spacing piece of curb plate, the three-dimensional positioning of curb plate has been accomplished, whole constitution component is simple reliable, the processing load is few, it is with low costs, outward appearance elegant appearance.

The side plate fixing hole is designed to be a combination of a rectangular groove hole and a circular groove hole, the side plate fixing convex piece moves back and forth to the area of the rectangular groove hole after being inserted into the circular groove hole, and the side plate can be limited up and down and left and right through the side plate fixing convex piece.

The side plate limiting sheet is integrally processed by the thin iron plate, and is clamped into the side plate limiting groove after being bent, so that the side plate limiting sheet is ingenious in design and small in processing amount.

A U-shaped groove is formed at the rear end of the left side plate main body and among the left side plate main body, the first vertical folding edge and the second vertical folding edge and serves as a back plate insertion groove, and the left side of the left folding edge of the back plate is inserted into the U-shaped groove to be fixed and limited; the structure is simple, the processing is convenient, the appearance is beautiful, no processing surface or welding surface exists, the processing cost is low, and the structure is simple and reliable.

These technical solutions, including the improved technical solutions, can also be combined or combined with each other, so as to achieve better technical effects.

By adopting the technical scheme, the invention has the following beneficial effects:

according to the thin-edge file cabinet with few seams and good flatness, the file cabinet is designed into parts such as the top plate, the inner top plate, the back plate, the left side plate, the right side plate, the bottom plate, the left door plate, the right door plate, the front frame and the like which are of an integral structure, most of the parts can be integrally formed by sheet metal of a thin iron plate, the processing cost is low, the number of welding points is few, raw materials are saved, the utilization rate of the raw materials is improved, the processing procedure is simple, the assembly is simple and reliable, and the matching is good; the appearance is not exposed, and the appearance is beautiful and elegant, and is suitable for large-scale high-efficiency production.

Moreover, in the file cabinet of the prior art, the size of the edge of the front frame is generally 6-12mm, which is also the size of the top plate 1 and the side plate in the overlooking direction, and the space cannot be used for placing articles, which is a waste of materials and space; the thin-edge file cabinet with few seams and good flatness provided by the invention can reduce the size of the position to 3-4mm, improve the space utilization rate and save raw materials.

The thin-edge file cabinet with few seams and good smoothness has the advantages that the interior of the top plate is smooth and attractive; in the thin-edge file cabinet in the prior art, a groove, a folded edge and a reinforcing plate which are visible inside are arranged inside a top plate; the back plate is internally provided with convex ridges and concave surfaces.

According to the thin-edge file cabinet with few seams and good smoothness, the back plate and the laminate are tightly attached and have no gap; in the prior art, a gap of 2-15mm is usually formed between the back plate and the laminate, so that the appearance is not attractive and the use performance is influenced.

Drawings

FIG. 1 is a sectional view of a thin-edged filing cabinet with few seams and good flatness.

Fig. 2 is a top plate perspective view in a plan view.

Fig. 3 is a top plate perspective view in the bottom direction.

Fig. 4 is a partially enlarged view of fig. 3.

Fig. 5 is a top panel left side view.

Fig. 6 is a partially enlarged view of fig. 5.

In fig. 6, the distance indicated between the two arrows is the same as the size of the side of the front frame.

Fig. 7 is a left side plate perspective view.

Fig. 8 is a partially enlarged view of the upper right portion of the left side plate perspective view.

Fig. 9 is a partially enlarged view of the lower right portion of the left side plate perspective view.

Fig. 10 is a top view of the left side plate.

Fig. 11 is a partially enlarged view of fig. 10.

In fig. 11, the distance indicated between the two arrows, i.e., the size equivalent to the side of the front frame.

Fig. 12 is a perspective view of the inside ceiling plate.

Fig. 13 is a partially enlarged perspective view of the inside ceiling panel.

Fig. 14 is a perspective view of a back plate.

Fig. 15 is a left side view of the back plate.

FIG. 16 is an enlarged upper partial view of the left side view of the back plate.

Fig. 17 is a lower partial enlarged view of a left side view of the back plate.

Fig. 18 is a top perspective view of the base plate.

Fig. 19 is a partially enlarged view of fig. 15 which is a perspective view of the bottom plate.

Fig. 20 is a bottom perspective view of the base plate.

Fig. 21 is a front frame perspective view in the front view direction.

Fig. 22 is a front exploded view.

Fig. 23 is a perspective view of the upper frame.

Fig. 24 is an upper frame right view.

Fig. 25 is a left frame perspective view.

Fig. 26 is a partially enlarged view of a left frame perspective.

Fig. 27 is a top view of the left frame. In fig. 27, the two protruding members above and below the position shown by the left frame bottom edge 9031 are pull holes for attaching hinges.

Fig. 28 is a lower frame perspective view.

Fig. 29 is a lower frame right view.

Fig. 30 is a front view of the lower frame.

Fig. 31 is a top view of the lower frame.

Fig. 32 is a perspective view of the footing plate.

Fig. 33 is a partially enlarged perspective view of the footing plate.

Fig. 34 is a rear view of the footing plate.

Fig. 35 to 45 are schematic views of steps 1 to 11 of the mounting process.

Fig. 46 is a schematic view of the structure of a file cabinet of the prior art.

The parts in the figures are numbered:

the structure comprises a top plate 1, an inner top plate 2, a back plate 3, a left side plate 4, a right side plate 5, a bottom plate 6, a left door plate 7, a right door plate 8, a front frame 9 and a baseboard 11; a laminate 12;

the structure comprises a top plate main body 101, a top plate left folding edge 102, a top plate right folding edge 103, a top plate reinforcing plate 104, a top plate decorative folding edge 105, a side plate fixing hole 106, a side plate limiting groove 107, a top plate front folding edge 108 and a top plate rear folding edge 109; an escape groove 1013, a rectangular groove hole 101, and a circular groove hole 1012;

the left side plate comprises a left side plate main body 400, a left side plate upper folding edge 401, a left side plate lower folding edge 402, a left side plate front folding edge 403, a left side plate rear folding edge 404, a bottom plate fixing strip 405, a side plate fixing convex part 406, a side plate limiting piece 407, an upper folding edge main body 4011, a left side vertical piece 4061, a right side vertical piece 4062, a left side crescent insertion piece 4063, a right side crescent insertion piece 4064 and a middle connection piece 4065;

the inner top plate comprises an inner top plate main body 201, a front end vertical folding edge 202, a front end horizontal folding edge 203, a rear end vertical folding edge 204, a rear end horizontal folding edge 205, a left side vertical folding edge 206 and a right side vertical folding edge 207;

the back plate comprises a back plate main body 301, a bottom plate rear fixing strip 302, a bottom reinforcing piece 303, a back plate upper folding edge 304, a back plate lower flat folding edge 305, a back plate left folding edge 306, a back plate right folding edge 307, a back plate lower straight folding edge 308 and a laminate support mounting groove 310; a reinforcement rear vertical plate 3031, a reinforcement bottom plate 3032 and a reinforcement front vertical plate 3033;

the bottom plate comprises a bottom plate main body 600, a bottom plate front folding edge 601, a bottom plate rear folding edge 602, a bottom plate left folding edge 603, a bottom plate right folding edge 604, a stamping bulge 605 and a bottom plate reinforcing rib 607;

an upper frame 901, a lower frame 902, a left frame 903, a right frame 904 and corner connectors 905; a pull hole 906 for mounting a hinge; an upper frame main body 9011, an upper frame front folded edge 9012, an upper frame front straight folded edge 9013, an upper frame rear straight folded edge 9014, an upper frame flat folded edge 9015, an upper frame front end flat folded edge 9017, an upper frame connecting bent portion 9018 and an upper frame rear end flat folded edge 9019;

a left frame bottom edge 9031, a left frame front folding edge 9032, a left frame front straight folding edge 9033, a left frame rear straight folding edge 9034, a left frame flat folding edge 9035, a hinge mounting hole 9036, a left frame front end flat folding edge 9037, a left frame connecting bent portion 9038 and a left frame rear end flat folding edge 9039;

a horizontal support part 9021, a vertical support part 9022, a horizontal support horizontal transverse edge 9023, a horizontal support front vertical edge 9024, a horizontal support rear vertical edge 9025, a vertical support front vertical edge 9026, a vertical support upper horizontal edge 9027 and a vertical support lower bottom edge 9028;

baseboard upper plate 1101, left supporting vertical plate 1121, right supporting vertical plate 1103, front supporting vertical plate 1104, rear supporting vertical plate 1105, left supporting bottom plate 1106, right supporting bottom plate 1107, front supporting bottom plate 1108, rear supporting bottom plate 1109, screw connecting hole 1120 and card 1121.

Detailed Description

The patent is further explained below with reference to the drawings. The scope of protection of the patent is not limited to the specific embodiments.

Example 1

As shown in fig. 1-46, the filing cabinet with less seams and good flatness of the patent includes a top plate 1, an inner top plate 2, a back plate 3, a left side plate 4, a right side plate 5, a bottom plate 6, a left door plate 7, a right door plate 8, and a front frame 9.

Wherein:

the top plate 1 is positioned at the top of the file cabinet and comprises a rectangular top plate main body 101, a top plate left folding edge 102, a top plate right folding edge 103, a top plate reinforcing plate 104, a top plate decorative folding edge 105, a top plate front folding edge 108 and a top plate rear folding edge 109; the top plate left folding edge 102, the top plate right folding edge 103, the top plate front folding edge 108 and the top plate rear folding edge 109 are integrated with the top plate main body 101.

The top plate 1 is formed by processing a first thin iron plate; the top plate 1 can be obtained by punching the entire thin iron plate into a predetermined shape and then performing a hemming process in accordance with a desired shape.

The top plate left folding edge 102 and the top plate right folding edge 103 are formed by respectively punching a first thin iron plate downwards and folding inwards at the left side and the right side of the top plate main body 101; the lengths of the top plate left folding edge 102 and the top plate right folding edge 103 are smaller than the width of the top plate main body 101, four symmetrical avoiding grooves 1013 are formed between two ends of the top plate left folding edge 102 and the top plate right folding edge 103 and the top plate main body 101, and a top plate decorative edge 105 is arranged between the outer side of the avoiding grooves 1013 and the top plate main body; the top plate left folding edge 102 is provided with two side plate fixing holes 106 and two side plate limiting grooves 107.

The side plate fixing hole 106 includes a rectangular slot 1011 and a circular slot 1012, and the diameter of the circular slot 1012 is larger than that of the side plate fixing protrusion 406, so that the side plate fixing protrusion 406 can be inserted into the circular slot 1012 without being removed from the rectangular slot 1011.

Thus, after the side plate fixing protrusion 406 is inserted into the side plate fixing hole 106 through the circular slot 1012, it can move along the length direction of the rectangular slot 1011, so that the left side plate 4 is clamped and is limited up and down.

The size of the side plate limiting groove 107 is larger than the corresponding size of 403 by 0.2-1mm, and the side plate limiting groove is used for accommodating the side plate limiting sheet 407, so that the side plate limiting sheet 407 is bent and inserted into the side plate limiting groove 107 and limited in the left-right direction by the side plate limiting groove 107, and the left side plate 4 and the top plate 1 are completely fixed together.

First installation seams with the thickness being 0.3mm larger than that of the left side plate 4 are reserved among the top plate left folding edge 102, the top plate right folding edge 103 and the top plate main body 101, so that the side plate fixing convex piece 406 can be inserted into the first installation seams.

A top plate front flange 108 and a top plate rear flange 109 are provided in the front-rear direction of the top plate main body 101; the top plate front flange 108 is a backward flange provided at the lower front end of the top plate main body 101 and is parallel to the top plate main body 101; the width of the front frame insertion groove left between the top plate front folding edge 108 and the top plate main body 101 is about 0.3mm larger than the thickness of the upper frame front folding edge 9012 of the upper frame 901.

An inner top plate insertion seam is reserved between the top plate rear folding edge 109 and the top plate main body 101, and the rear end horizontal folding edge 205 of the inner top plate 2 and the back plate upper folding edge 304 are inserted together during assembly, so that the top plate 1, the inner top plate 2 and the back plate 3 are combined together.

The left side plate 4 comprises a rectangular left side plate main body 400, a left side plate upper folding edge 401, a left side plate lower folding edge 402, a left side plate front folding edge 403, a left side plate rear folding edge 404 and a bottom plate fixing strip 405, wherein the left side plate main body 400, the left side plate upper folding edge 401, the left side plate lower folding edge 402, the left side plate front folding edge 403 and the left side plate rear folding edge 404 are of an integrated structure and are formed by processing a second thin iron plate metal plate.

The left side plate upper folding edge 401 comprises an upper folding edge main body 4011, two side plate fixing convex pieces 406 and two side plate limiting pieces 407, wherein the two side plate fixing convex pieces 406 and the two side plate limiting pieces 407 are arranged on the upper folding edge main body 4011; the side plate fixing convex part 406 is a structure formed by stamping an upper folding edge main body 4011 and comprises a left vertical piece 4061, a right vertical piece 4062, a left crescent insertion piece 4063 and a right crescent insertion piece 4064, a middle connection piece 4065 integrated with the upper folding edge main body 4011 is arranged between the left vertical piece 4061 and the right vertical piece 4062, and the distance between the outer side surfaces of the left vertical piece 4061 and the right vertical piece 4062 is about 1mm smaller than the width of the rectangular slotted hole 1011, so that the left vertical piece 4061 and the right vertical piece 4062 can be clamped and fixed; the left crescent insert 4063 is connected with the left vertical piece 4061, and the right crescent insert 4064 is connected with the right vertical piece 4062 and is parallel to the upper folding edge main body 4011.

The position of the side plate limiting sheet 407 corresponds to that of the side plate limiting groove 107, and two rectangular sheets formed by processing seams are punched by the upper folding main body 4011; the width of the rectangular piece in the front-back direction is based on the principle that the side plate limiting groove 107 can be inserted, so that the side plate limiting piece 407 can be bent to enter the side plate limiting groove 107 and then be fixed and limited on the left side plate 4 under the action of external force.

The front end part and the rear end part of the upper hem 401 of the left side plate are provided with avoidance notches for avoiding the back plate 3 and the front frame 9; the left side plate front folding edge 403 is a rectangular folding edge parallel to the left side plate main body 400 formed by bending the second thin iron plate towards the front edge of the left side plate main body 400 towards the rear side, and a front frame installation groove for accommodating the left frame front end flat folding edge 9037 of the front frame 9 is arranged between the left side plate front folding edge 403 and the left side plate main body 400.

The front-back width dimension of the front folding edge 403 of the left side plate is smaller than the dimension of the left frame front end flat folding edge 9037 of the front frame 9; thus, after the front end flat folding edge 9037 of the left frame is partially inserted into the front frame mounting groove, the front folding edge 403 of the left side plate cannot be overlapped with the rear end flat folding edge 9039 of the left frame.

The left side plate rear folding edge 404 comprises a first vertical folding edge 4041, a second vertical folding edge 4042, an upper end inner triangular plate 4043, an upper end outer triangular plate 4044, a lower end inner triangular plate 4045 and a lower end outer triangular plate 4046 which are integrated, wherein the upper end inner triangular plate 4043, the upper end outer triangular plate 4044, the lower end inner triangular plate 4045 and the lower end outer triangular plate 4046 are all formed by processing a second sheet iron plate through a sheet metal process, and the first vertical folding edge 4041 is connected with the rear side of the left side plate 4, is consistent in height with the left side plate 400, is perpendicular to the left side plate 400 and is matched with the second vertical folding edge 4042; the second standing flap 4042 is parallel to the left side plate body 400 and is formed by bending a second thin iron plate inward from the edge of the first standing flap 4041. Thus, a U-shaped groove is formed at the rear end of the left side plate main body 400 and between the left side plate main body 400, the first standing folding edge 4041 and the second standing folding edge 4042 to serve as a back plate insertion groove for inserting the left side of the back plate left folding edge 306 into the U-shaped groove for fixing and limiting.

The bottom edge of the upper end inner triangular plate 4043 is connected with the upper edge of the first vertical folding edge 4041, the bottom edge of the upper end outer triangular plate 4044 is connected with the upper edge of the second vertical folding edge 4042, and the bottom edges and the upper folding edge 401 of the left side plate are positioned on the same plane; hem 401's rear end on the left side board sets up to 45 degrees chamfers for with cooperate between the interior set-square 4043 of up end, the outer set-square 4044 of up end, make cooperate on set-square 4043, the outer set-square 4044 of up end and the left side board hem 401 size and the dog-ear in the up end, be located the coplanar and not superpose each other.

The inner triangle 4043 and the outer triangle 4044 are isosceles right triangles; the cutting angle is set to be 45 degrees; therefore, the upper end face inner triangular plate 4043 and the upper end face outer triangular plate 4044 are matched with each other in size and a folding angle, the lower end face inner triangular plate 4045 and the lower end face outer triangular plate 4046 are matched with each other in size and a folding angle, the upper folding edge and the lower folding edge of the upper end face inner triangular plate, the lower folding edge and the left side plate lower triangular plate after metal plate are located on the same plane and are not overlapped with each other, and the inner space can be.

The bottom edge of the lower end inner triangular plate 4045 is connected with the lower edge of the first vertical folding edge 4041, and the bottom edge of the lower end outer triangular plate 4046 is connected with the lower edge of the second vertical folding edge 4042, and both the bottom edge and the lower folding edge 402 of the left side plate are positioned on the same plane.

The space between the second standing flap 4042 and the left side plate main body 400 is defined as an insertion portion into which the back plate 3 can be tightly inserted.

The combination of the rear end angle of the left side plate lower folded edge 402 with the lower end inner triangular plate 4045 and the lower end outer triangular plate 4046 is the same as the corresponding portion of the left side plate upper folded edge 401.

The bottom plate fixing strip 405 is welded and fixed on the lower part of the left side plate main body 400, and a gap is left between the bottom plate fixing strip and the left side plate main body 400 to be used as an insertion seam of the bottom plate left folding edge 603. When the assembly and use are carried out, the inserting edge of the left bottom plate folding edge 603 of the bottom plate 6 is inserted into the inserting seam, so that the bottom plate 6 is fixed.

Two bottom plate fixing grooves 4051 are provided on the bottom plate fixing strip 405 to be combined with the punching protrusion of the bottom plate 6 to prevent the bottom plate 6 from moving up and down and left and right.

The right side plate 5 and the left side plate 4 are symmetrically arranged.

The inner top plate comprises a rectangular inner top plate main body 201, a front end vertical folding edge 202, a front end horizontal folding edge 203, a rear end vertical folding edge 204, a rear end horizontal folding edge 205, a left side vertical folding edge 206 and a right side vertical folding edge 207 which are integrally formed by a third thin iron plate. The front vertical folding edge 202, the rear vertical folding edge 204, the left vertical folding edge 206 and the right vertical folding edge 207 are consistent in height.

The front vertical flange 202 is bent upward from a third thin iron plate along the front end of the inner top plate main body 201, and is perpendicular to the inner top plate main body 201, and two fixing protrusions 208 are provided on the front vertical flange 202 to be engaged with the inner top plate fixing grooves 9020 provided on the front frame 9.

The front end horizontal folding edge 203 is a folding edge which is formed by a third thin iron plate from the upper edge of the front end vertical folding edge 202 to a rear metal plate and is parallel to the inner top plate main body, and is used for achieving the effects of attractiveness and strengthening the front end vertical folding edge 202.

The rear end standing flange 204 is formed by bending a third thin iron plate upwards along the inner top plate main body 201, and is perpendicular to the inner top plate main body 201.

The rear end horizontal folding edge 205 is formed by a metal plate from the upper edge of the rear end vertical folding edge 204 to the rear part and is parallel to the inner top plate main body, and the size of the rear end horizontal folding edge 205 in the front-rear direction is smaller than or equal to that of the top plate rear folding edge 109 of the top plate 1 in the front-rear direction, so that the rear end horizontal folding edge 205 can be completely inserted into the inner top plate insertion slot.

The back plate 3 comprises an integrated rectangular back plate main body 301, an upper back plate folding edge 304, a lower back plate flat folding edge 305, a lower back plate straight folding edge 308, a left back plate folding edge 306 and a right back plate folding edge 307, wherein the integrated rectangular back plate main body is formed by a fourth thin sheet metal plate; and a rear floor fixing strip 302, a "J" shaped bottom stiffener 303 welded to the back plate body 301.

The rear bottom plate fixing strip 302 is welded to the front side surface of the lower portion of the back plate main body 301, and a gap is left between the rear bottom plate fixing strip 302 and the back plate main body 301 for inserting the rear bottom plate folding edge 602 of the bottom plate 6.

Bottom reinforcements 303 are provided at the lower portion and the rear side of the backboard body 301, and are welded to the backboard body 301 at the rear side of the backboard body 301 to reinforce the structural strength of the backboard 3; the bottom reinforcement 303 comprises a reinforcement rear vertical plate 3031, a reinforcement bottom plate 3032 and a reinforcement front vertical plate 3033; wherein: the reinforcement rear vertical plate 3031 is a J-shaped rear end vertical plate part, the reinforcement bottom plate 3032 is a J-shaped bottom part, the reinforcement front vertical plate 3033 is a J-shaped front end vertical plate part, and the difference between the height of the reinforcement front vertical plate 3033 and the height of the back plate lower straight folded edge 308 is equal to the thickness of the fourth thin iron plate and is less than the height of the reinforcement rear vertical plate 3031.

The back plate lower flat folding edge 305 is arranged on the rear side of the lower edge of the back plate main body 301, is formed by machining a fourth thin iron plate backwards and horizontally along the rear edge of the back plate main body 301, and is perpendicular to the back plate main body 301.

The back plate lower straight folding edge 308 is formed by downwards sheet-metal machining a fourth thin iron plate along the rear edge of the back plate lower flat folding edge 305 and is parallel to the back plate main body 301; the left and right ends of the lower straight folding edge 308 of the back plate are provided with notches, so that the first vertical folding edge and the second vertical folding edge of the left side plate 4 and the right side plate 5 can be inserted into the notches.

The back plate left folding edge 306 is an L-shaped folding edge connected with the back plate main body 301, when the back plate left folding edge 306 is installed, the left side of the back plate left folding edge 306 is inserted into a U-shaped groove formed by the left side plate main body 400, the first vertical folding edge 4041 and the second vertical folding edge 4042 of the left side plate 4, and the right side of the back plate left folding edge 306 is inserted into a corresponding part of the right side plate 5, so that the back plate 3, the left side plate 4 and the right side plate 5 are fixed together; the back plate right flap 307 is symmetrically disposed with the back plate left flap 306.

The upper back flap 304 is a horizontal flap, and is formed by sheet-metal working a fourth thin iron plate backward along the back panel main body 301, so as to fix the back panel 3 by inserting the upper back flap 304 into the inner top panel insertion slit of the top panel 1. The rear plate main body 301 is also provided at left and right sides thereof with deck support mounting grooves 310.

The bottom plate 6 comprises a bottom plate main body 600, a bottom plate front folding edge 601, a bottom plate rear folding edge 602, a bottom plate left folding edge 603 and a bottom plate right folding edge 604 which are integrated and formed by a fourth thin sheet metal, and a bottom plate reinforcing rib 607 welded on the bottom plate main body 600.

The front bottom plate flange 601 is a flange formed by vertically pressing a fourth thin iron plate downward along the front edge of the bottom plate main body 600, and is fixed to the front frame 9 by welding or screws. The bottom plate rear flange 602 is a flange formed by vertically pressing a fourth thin iron plate downward along the rear edge of the bottom plate main body 600.

The bottom plate left folding edge 603 and the bottom plate right folding edge 604 are respectively folding edges formed by downward vertical metal plates of the fourth thin iron plate along the left edge and the right edge of the bottom plate main body 600, and the bottom plate left folding edge 603 and the bottom plate right folding edge 604 are both provided with two stamping protrusions 605 for matching with a bottom plate fixing groove 4051 on the bottom plate fixing strip 405, fixing the bottom plate 6 and preventing the bottom plate 6 from moving up and down, left and right.

The front frame 9 includes an upper frame 901, a lower frame 902, a left frame 903, a right frame 904, and four corner codes 905.

The upper frame 901 comprises an upper frame main body 9011 of an integrated structure, and the upper frame main body 9011 comprises an upper frame bottom edge 9016, an upper frame front folding edge 9012 of a Z-shaped structure, an upper frame front straight folding edge 9013, an upper frame rear straight folding edge 9014 and an upper frame flat folding edge 9015.

The upper frame front folding edge 9012 comprises an upper frame front end flat folding edge 9017, an upper frame connecting bent part 9018 and an upper frame rear end flat folding edge 9019; the upper frame connecting bent part 9018 divides the upper frame front folded edge 9012 into parts which are parallel to each other and different in height, namely an upper frame front end flat folded edge 9017 and an upper frame rear end flat folded edge 9019; the height difference between the upper frame front end flat folding edge 9017 and the upper frame rear end flat folding edge 9019 is the thickness of the first thin iron plate forming the top plate 1, so that the height of the lower part of the top plate 1 is consistent after the top plate 1 and the front frame 9 are inserted in a matched mode.

The upper frame flat folding edge 9015 is located in the middle of the upper frame, and the front edge and the rear edge of the upper frame flat folding edge 9015 are an upper frame front straight folding edge 9013 and an upper frame rear straight folding edge 9014 respectively.

The straight folded edge 9013 is provided with an anti-collision corner pad mounting hole and a latch hook hanging groove in front of the upper frame. The upper frame rear straight folding edge 9014 is an L-shaped folding edge, and the upper frame rear straight folding edge 9014 is connected with the upper frame flat folding edge 9015; an inner top plate fixing groove 9020 matched with the fixing protrusion of the inner top plate 2 is formed in the upper frame rear straight folding edge 9014.

The four corner connectors 905 are welded to the four corners of the front frame body 9011, respectively, to reinforce the strength of the front frame 9, and fix the upper frame 901, the lower frame 902, the left frame 903, and the right frame 904 together.

The left frame 903 is identical in structure and size to the upper frame 901, and is disposed at a left position 90 degrees different from the upper frame, except for the mating structure for mounting the door panel and the door lock. The left frame 903 is of an integral structure and comprises a left frame bottom edge 9031, a left frame front folding edge 9032 of a Z-shaped structure, a left frame front straight folding edge 9033, a left frame rear straight folding edge 9034 and an upper frame flat folding edge 9035; hinge mounting holes 9036; the left frame front folding edge 9032 is consistent with the upper frame front folding edge 9012 in structure and also comprises a left frame front end flat folding edge 9037, a left frame connecting bent part 9038 and a left frame rear end flat folding edge 9039; the left frame connecting bent part 9038 divides the left frame front folded edge 9032 into parts which are parallel to each other and different in height, namely a left frame front end flat folded edge 9037 and a left frame rear end flat folded edge 9039; the height difference between the left frame front end flat folding edge 9037 and the left frame rear end flat folding edge 9039 is the thickness of the first thin iron plate forming the left side plate 4; after the left side plate front folding edge 403 of the left side plate 4 is inserted, the left and right directions are flush with the left frame rear end flat folding edge 9039; the whole is beautiful, the combination is tight, and the strength is increased.

A hinge mounting hole 9036 for mounting a left door plate is formed in the bottom edge 9031 of the left frame, and the left door plate is connected with the left frame 903 through a hinge.

The bottom edge 9031 of the left frame is also provided with a row hole for mounting a movable laminate; the number and positions of the rows of holes are arranged to correspond to those of the deck support mounting grooves 310.

The right frame 904 and the left frame 903 are identical in structure and are arranged symmetrically with each other except for the matching structure of the door panel and the door lock.

The lower frame 902 is an integrated structure and is formed by processing a sixth thin iron plate through a sheet metal; comprises a horizontal support part 9021 in a shape of a door and a vertical support part 9022 in a shape of a transverse door.

The horizontal support part 9021 comprises a horizontal support horizontal transverse edge 9023, a horizontal support front vertical edge 9024 and a horizontal support rear vertical edge 9025; the front vertical side 9024 and the rear vertical side 9025 of the horizontal support are respectively arranged on the front side and the rear side of the horizontal transverse side 9023 of the horizontal support.

A vertical support 9022; comprises a vertical support front vertical edge 9026, a vertical support upper horizontal edge 9027 and a vertical support lower bottom edge 9028; the vertical support upper horizontal edge 9027 and the vertical support lower bottom edge 9028 are respectively arranged on the upper side and the lower side of the vertical support front vertical edge 9026; the upper horizontal side 9027 of the vertical support is connected with the front vertical side 9024 of the horizontal support. The end of the vertical support lower base edge 9028 is provided with a vertical reinforcing flange 9029.

The top plate front flange 108 is provided with a front frame insertion slit between the top plate main bodies 101 for inserting the upper frame front flange 9012 of the upper frame 901 of the front frame 9.

The front vertical edge 9024 of the horizontal support is connected with the upper horizontal edge 9027 of the vertical support; the horizontal transverse edge 9023 of the horizontal support is consistent with the horizontal folding edge 9015 of the upper frame in front and back size.

The left door plate 7 and the right door plate 8 are both in the prior art and are respectively connected with the left frame 903 and the right frame 904 through hinges to be used as file cabinet doors;

two bottom foot plates 11 are further arranged at the bottom of the thin-edge file cabinet, and the bottom foot plates 11 are respectively fixed on the front frame 9 and the back plate 3 through screws. The footing plate 11 is constructed by a seventh thin iron plate metal plate, and comprises a rectangular footing plate upper plate 1101, four supporting vertical plates at four edges below the footing plate upper plate 1101, and four supporting bottom plates arranged at the outer sides of the edges of the four supporting vertical plates; the four supporting vertical plates are respectively a left supporting vertical plate 1121 arranged at the left side edge of the base plate upper plate 1101, a right supporting vertical plate 1103 arranged at the right side edge of the base plate upper plate 1101, a front supporting vertical plate 1104 arranged at the front side edge of the base plate upper plate 1101, and a rear supporting vertical plate 1105 arranged at the rear side edge of the base plate upper plate 1101; the four supporting bottom plates are respectively a left supporting bottom plate 1106 arranged on the outer side of the left supporting vertical plate 1121, a right supporting bottom plate 1107 arranged on the outer side of the right supporting vertical plate 1103, a front supporting bottom plate 1108 arranged on the outer side of the front supporting vertical plate 1104 and a rear supporting bottom plate 1109 arranged on the outer side of the rear supporting vertical plate 1105.

The front end and the rear end of the baseboard upper plate 1101 are respectively provided with a screw connection hole 1120, at least one clamping piece 1121 is respectively arranged on the corresponding left supporting vertical plate 1121 and the right supporting vertical plate 1103, and the clamping pieces 1121 are formed by stamping the corresponding supporting vertical plate.

During assembly, corresponding holes are formed in the front frame 9 and the back plate 3, the front end and the rear end of the bottom foot plate 11 are fixed to the front frame 9 and the back plate 3 through screws respectively, and the clamping piece 1121 of the bottom foot plate 11 is bent to clamp the lower folded edges of the left side plate 4 and the right side plate 5 to fix the bottom foot plate.

When the veneer file cabinet needs to be provided with veneers, supports can be installed through the row holes arranged on the left frame 903 and the right frame 904 and the veneer support installing grooves 310 on the back plate, and then the veneers are supported between the left frame 903 and the right frame 904.

The hinge mounting holes 9046 are arranged and matched according to the mounting requirements of the hinge.

The related corner connectors 905, the hinge, the right door plate 8, the left door plate 7, the corner pad and the movable laminate are all products which are publicly sold in the prior art and can be commercially purchased from the market. The fitting structure of the installation door plate and the door lock is the prior art.

When in installation, the steps are as follows:

1. assembling the front frame 9: fixing an upper frame 901, a lower frame 902, a left frame 903 and a right frame 904 which form a front frame 9 together by using an angle code 905; then clamping the front frame 9 into the front frame mounting grooves at the front ends of the left side plate 4 and the right side plate 5;

2. clamping the back plate 3 into the mounting grooves at the rear ends of the left side plate 4 and the right side plate 5;

3. the bottom plate 6 is placed in the assembled frame and moves downwards, so that the bottom plate is clamped into the corresponding bottom plate mounting parts of the left side plate 4, the right side plate 5 and the back plate 3; wherein:

a bottom plate left folding edge 603 and a bottom plate right folding edge 604 of the bottom plate 6 are respectively inserted into a gap between the bottom plate fixing strip 405 and the left side plate main body 400 or the right side plate main body, so that the bottom plate is fixed;

the stamping protrusions 605 are inserted into the bottom plate fixing grooves 4051 on the bottom plate fixing strips 405 to be matched with each other, so that the bottom plate 6 is fixed, and the bottom plate 6 is prevented from moving up, down, left and right;

the bottom plate rear folded edge 602 is inserted into the gap between the bottom plate rear fixing strip 302 and the back plate main body 301;

4. placing the top plate 1 on the top end of the file cabinet, so that the side plate fixing convex pieces 406 arranged at the upper ends of the left side plate 4 and the right side plate 5 are inserted into the side plate fixing holes 106 at the left side and the right side of the top plate 1; the top plate 1 is moved backwards to enable the front end and the rear end of the top plate 1 to be flush with the left side plate 4 and the right side plate 5, and meanwhile, the front edge folding 9012 of the upper frame 901 of the front frame 9 is clamped into the front frame insertion groove between the front edge folding 108 of the top plate at the front end of the top plate 1 and the top plate main body 101;

5. bending a side plate limiting sheet 407 arranged on the side plate to clamp the side plate limiting sheet into a side plate limiting groove 107 arranged on the top plate 1, so that the top plate 1 is limited and cannot move;

6. the inner top plate 2 is placed into the file cabinet, the back folded edge and the back plate upper folded edge 304 are inserted into the back end clamping groove of the top plate 1 together, then the inner top plate 2 is pushed upwards, and the fixing bulge 208 arranged at the front end of the front end vertical folded edge 202 is clamped into the inner top plate fixing groove 9020 arranged on the front frame 9;

7. the front frame 9 and the bottom plate are connected together by screws, so that the strength of the cabinet body is enhanced;

8. the front end and the rear end of the bottom foot plate 11 are respectively fixed on the front frame 9 and the back plate 3 by screws, and the clamping piece of the bottom foot plate 11 is bent to clamp the lower folded edges of the left side plate 4 and the right side plate 5;

9. installing the laminate 12 at a proper height in the file cabinet by using a laminate buckle and a laminate fixing block as required;

10. the left door plate 7 and the right door plate 8 are mounted in hinge mounting holes of a left frame 903 and a right frame 904 of the front frame 9 by using screws; thereby completing the basic structural assembly of the file cabinet.

Claims

1. A thin-edged file cabinet with few seams and good smoothness is characterized in that: comprises a top plate (1), an inner top plate (2), a back plate (3), a left side plate (4), a right side plate (5), a bottom plate (6), a left door plate (7), a right door plate (8) and a front frame (9); wherein:

the top plate (1) is positioned at the top of the file cabinet and comprises a rectangular top plate main body (101), a top plate left folding edge (102), a top plate right folding edge (103), a top plate reinforcing plate (104), a top plate decorative folding edge (105), a top plate front folding edge (108) and a top plate rear folding edge (109); the top plate left folding edge (102), the top plate right folding edge (103), the top plate front folding edge (108) and the top plate rear folding edge (109) are integrated with the top plate main body (101) into a whole and are formed by machining a first thin iron plate;

the top plate left folding edge (102) and the top plate right folding edge (103) are arranged in the left and right directions of the top plate main body (101) and are formed by respectively punching a first thin iron plate downwards and folding inwards at the left side and the right side of the top plate main body (101); the length of the top plate left folding edge (102) and the top plate right folding edge (103) is smaller than the width of the top plate main body (101), four symmetrical avoiding grooves (1013) are formed between the two ends of the top plate left folding edge (102) and the top plate right folding edge (103) and the top plate main body (101), and top plate decorative folding edges (105) are arranged between the outer sides of the avoiding grooves (1013) and the top plate main body; the top plate left folding edge (102) is provided with at least two side plate fixing holes (106) and at least one side plate limiting groove (107);

the side plate fixing hole (106) comprises a rectangular slotted hole (1011) and a circular slotted hole (1012), and the diameter of the circular slotted hole (1012) is larger than that of the side plate fixing convex piece (406), so that the side plate fixing convex piece (406) can be inserted into the circular slotted hole (1012);

the width of the rectangular slotted hole (1011) is smaller than the diameter of the side plate fixing convex piece (406);

the side plate limiting groove (107) is used for accommodating a side plate limiting piece (407), so that after the side plate limiting piece (407) is bent and inserted into the side plate limiting groove (107), the left side plate (4) is limited in the left-right direction by the side plate limiting groove (107), and the left side plate (4) and the top plate (1) are completely fixed together;

first installation seams which are the same as the thickness of the left side plate (4) or slightly larger than the thickness of the left side plate (4) are reserved between the top plate left folding edge (102), the top plate right folding edge (103) and the top plate main body (101), so that the side plate fixing convex piece (406) can be inserted into the first installation seams;

the top plate front folding edge (108) and the top plate rear folding edge (109) are arranged in the front-rear direction of the top plate main body (101); the top plate front folding edge (108) is a backward folding edge arranged at the front end of the lower part of the top plate main body (101) and is parallel to the top plate main body (101); a space is reserved between the top plate front folding edge (108) and the top plate main body (101), and the space is a front frame insertion groove and is used for inserting an upper frame front folding edge (9012) of an upper frame (901) of the front frame (9);

an inner top plate inserting seam is reserved between the top plate rear folding edge (109) and the top plate main body (101) and used for inserting the rear end horizontal folding edge (205) of the inner top plate (2) and the back plate upper folding edge (304) together, so that the top plate (1), the inner top plate (2) and the back plate (3) are combined together;

the left side plate (4) comprises a rectangular left side plate main body (400), a left side plate upper folding edge (401), a left side plate lower folding edge (402), a left side plate front folding edge (403), a left side plate rear folding edge (404) and a bottom plate fixing strip (405), wherein the left side plate main body (400), the left side plate upper folding edge (401), the left side plate lower folding edge (402), the left side plate front folding edge (403) and the left side plate rear folding edge (404) are of an integrated structure and are formed by machining a second thin iron plate sheet metal;

the left side plate upper folding edge (401) comprises an upper folding edge main body (4011), at least two side plate fixing convex pieces (406) arranged on the upper folding edge main body (4011) and at least one side plate limiting piece (407); the fixed protruding piece of curb plate (406) is the structure that the punching press of last hem main part (4011) formed, including left side upright piece (4061), right side upright piece (4062), left side crescent inserted sheet (4063), right side crescent inserted sheet (4064), the left side is found between piece (4061) and the right side upright piece (4062) for with last hem main part (4011) middle connection piece (4065) of structure as an organic whole, the distance between the lateral surface of left side upright piece (4061) and right side upright piece (4062), slightly less than the width of rectangular slotted hole (1011), make left side upright piece (4061) and right side upright piece (4062) can block between and can fix; the left crescent insertion piece (4063) is connected with the left vertical piece (4061), and the right crescent insertion piece (4064) is connected with the right vertical piece (4062) and is parallel to the upper folding edge main body (4011);

the position of the side plate limiting sheet (407) corresponds to the position of the side plate limiting groove (107), and the side plate limiting sheet is a rectangular sheet formed by punching two processing seams from the upper folding main body (4011);

the front end part and the rear end part of the upper hem (401) of the left side plate are provided with avoidance notches for avoiding the back plate (3) and the front frame (9); the left side plate front folding edge (403) is a rectangular folding edge parallel to the left side plate main body (400) formed by bending the second thin iron plate towards the rear side from the front edge of the left side plate main body (400), and a front frame mounting groove for accommodating a left frame front end flat folding edge (9037) of the front frame (9) is formed between the left side plate front folding edge (403) and the left side plate main body (400);

the left side plate rear folding edge (404) comprises a first vertical folding edge (4041), a second vertical folding edge (4042), an upper end face inner triangular plate (4043), an upper end face outer triangular plate (4044), a lower end face inner triangular plate (4045) and a lower end face outer triangular plate (4046) which are integrated, wherein the upper end face inner triangular plate (4043), the upper end face outer triangular plate (4044), the lower end face inner triangular plate (4045) and the lower end face outer triangular plate (4046) are all formed by processing a second thin iron plate through a sheet metal process, the first vertical folding edge (4041) is connected with the rear side of the left side plate (4), is consistent in height with the left side plate main body (400), is perpendicular to the left side plate main body (400) and is matched with the second vertical folding edge (4042); the second vertical folding edge (4042) is parallel to the left side plate main body (400) and is formed by bending a second thin iron plate inwards from the edge of the first vertical folding edge (4041);

the bottom edge of the upper end inner triangular plate (4043) is connected with the upper edge of the first vertical folding edge (4041), the bottom edge of the upper end outer triangular plate (4044) is connected with the upper edge of the second vertical folding edge (4042), and the bottom edge and the upper edge of the left side plate upper folding edge (401) are positioned on the same plane; the rear end of the upper folding edge (401) of the left side plate is set to be a 45-degree cut angle and is used for being matched with the inner triangular plate (4043) of the upper end face and the outer triangular plate (4044) of the upper end face, so that the inner triangular plate (4043) of the upper end face, the outer triangular plate (4044) of the upper end face and the upper folding edge (401) of the left side plate are matched with each other in size and folding angle and are positioned on the same plane and are not overlapped with each other;

the bottom edge of the triangular plate (4045) in the lower end surface is connected with the lower edge of the first vertical folding edge (4041), the bottom edge of the triangular plate (4046) in the lower end surface is connected with the lower edge of the second vertical folding edge (4042), and the bottom edge and the lower folding edge (402) of the left side plate are positioned on the same plane;

the space between the second vertical folding edge (4042) and the left side plate main body (400) can be tightly inserted into the back plate (3);

the lower hem (402) of the left side plate is a hem which is formed by bending the second thin iron plate to the right side on the lower edge of the left side plate main body (400) and is vertical to the left side plate main body (400), and is used for reinforcing the lower part of the left side plate main body (400);

the combination of the rear end angle of the lower folded edge (402) of the left side plate and the inner triangular plate (4045) and the outer triangular plate (4046) of the lower end surface is consistent with the corresponding part of the upper folded edge (401) of the left side plate;

the bottom plate fixing strip (405) is a metal strip fixed on the lower part of the left side plate main body (400) in a welding mode, a gap is reserved between the metal strip and the left side plate main body (400), the gap is an insertion seam of the left folding edge (603) of the bottom plate, and the insertion edge of the left folding edge (603) of the bottom plate (6) is inserted into the insertion seam to fix the bottom plate;

the right side plate (5) and the left side plate (4) are symmetrically arranged;

the inner top plate comprises an inner top plate main body (201) integrally formed by a third thin iron plate, a front end vertical folding edge (202), a front end horizontal folding edge (203), a rear end vertical folding edge (204), a rear end horizontal folding edge (205), a left side vertical folding edge (206) and a right side vertical folding edge (207);

the inner top plate main body (201) is rectangular;

the front end vertical folded edge (202) is a folded edge which is formed by bending a third thin iron plate upwards along the front end of the inner top plate main body (201) and is vertical to the inner top plate main body (201), and at least two fixing bulges (208) are arranged on the front end vertical folded edge (202) and are used for being clamped into inner top plate fixing grooves arranged on the front frame (9);

the front end horizontal folded edge (203) is formed by a third thin iron plate from the upper edge of the front end vertical folded edge (202) to a rear metal plate and is parallel to the inner top plate main body;

the rear end vertical folding edge (204) is a folding edge which is formed by bending the third thin iron plate upwards along the inner top plate main body (201) and is vertical to the inner top plate main body (201);

the rear end horizontal folding edge (205) is formed by backward metal plates from the upper edge of the rear end vertical folding edge (204) and is parallel to the inner top plate main body, and the size of the rear end horizontal folding edge (205) in the front-back direction is smaller than or equal to that of the top plate rear folding edge (109) of the top plate (1) in the front-back direction so as to ensure that the rear end horizontal folding edge (205) can be completely inserted into the inner top plate insertion seam;

the front vertical folding edge (202), the rear vertical folding edge (204), the left vertical folding edge (206) and the right vertical folding edge (207) are consistent in height;

the back plate (3) comprises an integrated rectangular back plate main body (301) formed by a fourth thin sheet metal, a back plate upper folding edge (304), a back plate lower flat folding edge (305), a back plate lower straight folding edge (308), a back plate left folding edge (306) and a back plate right folding edge (307); the bottom plate rear fixing strip (302) and the J-shaped bottom reinforcing piece (303) are welded on the back plate main body (301); wherein:

the rear bottom plate fixing strip (302) is welded on the front side surface of the lower part of the main body (301) of the back plate, and a gap is reserved between the rear bottom plate fixing strip (302) and the main body (301) of the back plate and used for inserting a rear bottom plate folding edge (602) of the bottom plate (6);

the bottom reinforcing pieces (303) are arranged at the lower part and the rear side of the back plate main body (301) and welded with the back plate main body (301) at the rear side of the back plate main body (301) so as to reinforce the structural strength of the back plate (3); the bottom reinforcement (303) comprises a reinforcement rear vertical plate (3031), a reinforcement bottom plate (3032) and a reinforcement front vertical plate (3033); wherein: the reinforcement rear vertical plate (3031) is a J-shaped rear end vertical plate part, the reinforcement bottom plate (3032) is a J-shaped bottom part, the reinforcement front vertical plate (3033) is a J-shaped front end vertical plate part, the difference between the height of the reinforcement front vertical plate (3033) and the height of the back plate lower straight folded edge (308) is equal to the thickness of the fourth thin iron plate, and the height of the reinforcement front vertical plate is smaller than the height of the reinforcement rear vertical plate (3031);

the back plate lower flat folding edge (305) is arranged on the rear side of the lower edge of the back plate main body (301), is formed by machining a fourth thin iron plate backwards along the rear edge of the back plate main body (301) by a horizontal metal plate and is vertical to the back plate main body (301);

the back plate lower straight folded edge (308) is formed by downwards sheet metal machining a fourth thin iron plate along the rear edge of the back plate lower flat folded edge (305) and is parallel to the back plate main body (301); the left end and the right end of the lower straight folding edge (308) of the back plate are provided with gaps, so that the first vertical folding edge and the second vertical folding edge of the left side plate (4) and the right side plate (5) can be inserted into the gaps;

the back plate left folding edge (306) is an L-shaped folding edge connected with the back plate main body (301), when the back plate left folding edge is installed, the left side of the back plate left folding edge (306) is inserted into a U-shaped groove formed by the left side plate main body (400), the first vertical folding edge (4041) and the second vertical folding edge (4042) of the left side plate (4), and the right side of the back plate left folding edge (306) is inserted into the corresponding part of the right side plate (5), so that the back plate (3), the left side plate (4) and the right side plate (5) are fixed together; the back plate right folded edge (307) and the back plate left folded edge (306) are symmetrically arranged;

the upper hem (304) of the back plate is a horizontal hem of a fourth thin iron plate along the back plate main body (301) towards the rear metal plate, and the back plate (3) is fixed by inserting the upper hem (304) of the back plate into the inner top plate inserting seam of the top plate (1);

the bottom plate (6) comprises an integrated bottom plate main body (600) formed by a fifth thin sheet metal, a bottom plate front folding edge (601), a bottom plate rear folding edge (602), a bottom plate left folding edge (603), a bottom plate right folding edge (604) and bottom plate reinforcing ribs (607) welded on the bottom plate main body (600);

the front folded edge (601) of the bottom plate is a folded edge formed by vertically downwards stamping a fourth thin iron plate along the front edge of the bottom plate main body (600), and is fixed with the front frame (9) by welding or screws;

the rear folded edge (602) of the bottom plate is formed by vertically downwards stamping a fourth thin iron plate along the rear edge of the bottom plate main body (600);

the bottom plate left folding edge (603) and the bottom plate right folding edge (604) are folding edges formed by downwards vertically stamping the fourth thin iron plate along the left edge and the right edge of the bottom plate main body (600);

the front frame (9) comprises an upper frame (901), a lower frame (902), a left frame (903), a right frame (904) and four corner connectors (905);

the upper frame (901) comprises an upper frame main body (9011) of an integrated structure formed by processing a sixth thin iron plate, wherein the upper frame main body (9011) comprises an upper frame bottom edge (9016), an upper frame front folding edge (9012) of a Z-shaped structure, an upper frame front straight folding edge (9013), an upper frame rear straight folding edge (9014) and an upper frame flat folding edge (9015);

the upper frame front folding edge (9012) comprises an upper frame front end flat folding edge (9017), an upper frame connecting bent part (9018) and an upper frame rear end flat folding edge (9019); the upper frame connecting bent part (9018) divides the upper frame front folded edge (9012) into parts which are parallel to each other and have different heights, namely an upper frame front end flat folded edge (9017) and an upper frame rear end flat folded edge (9019); the height difference between the upper frame front end flat folding edge (9017) and the upper frame rear end flat folding edge (9019) is the thickness of a first thin iron plate forming the top plate (1), so that the heights of the lower parts of the top plate (1) and the front frame (9) are consistent after the top plate and the front frame are inserted in a matched mode;

the upper frame flat folding edge (9015) is positioned in the middle of the upper frame, and the front edge and the rear edge of the upper frame flat folding edge are respectively an upper frame front straight folding edge (9013) and an upper frame rear straight folding edge (9014);

the rear straight folded edge (9014) of the upper frame is an L-shaped folded edge, and the rear straight folded edge (9014) of the upper frame is connected with the flat folded edge (9015) of the upper frame; an inner top plate fixing groove (9020) matched with the fixing bulge of the inner top plate (2) is formed in the rear straight folding edge (9014) of the upper frame;

the four corner connectors (905) are respectively welded at four corners of the upper frame main body (9011) to strengthen the strength of the front frame (9), and the upper frame (901), the lower frame (902), the left frame (903) and the right frame (904) are fixed together;

the left frame (903) has the same structure as the upper frame (901) except that the structure of the left frame is different from the matching structure of the door panel and the door lock, has the same or different size and is arranged at a position which is 90 degrees different from the upper frame; the left frame (903) is of an integrated structure and comprises a left frame bottom edge (9031), a left frame front folding edge (9032) of a Z-shaped structure, a left frame front straight folding edge (9033), a left frame rear straight folding edge (9034) and a left frame flat folding edge (9035); a hinge mounting hole (9036); the left frame front folding edge (9032) is consistent with the upper frame front folding edge (9012) in structure and also comprises a left frame front end flat folding edge (9037), a left frame connecting bent part (9038) and a left frame rear end flat folding edge (9039); the left frame connecting bent part (9038) divides the left frame front folded edge (9032) into parts which are parallel to each other and have different heights, namely a left frame front end flat folded edge (9037) and a left frame rear end flat folded edge (9039); the height difference between the left frame front end flat folding edge (9037) and the left frame rear end flat folding edge (9039) is the thickness of a first thin iron plate forming the left side plate (4);

a hinge mounting hole (9036) for mounting a left door plate is formed in the bottom edge (9031) of the left frame, and the left door plate is connected with the left frame (903) through a hinge;

the right frame (904) and the left frame (903) are structurally symmetrical except that the right frame (904) and the left frame (903) are different from the matching structure for installing the door panel and the door lock;

the lower frame (902) is an integrated structure and is formed by processing a seventh thin iron plate through a sheet metal; comprises a horizontal support part (9021) in a shape of a door and a vertical support part (9022) in a shape of a transverse door;

the horizontal support part (9021) comprises a horizontal support horizontal transverse edge (9023), a horizontal support front vertical edge (9024) and a horizontal support rear vertical edge (9025); wherein, the front vertical edge (9024) of the horizontal support and the rear vertical edge (9025) of the horizontal support are respectively arranged at the front side and the rear side of the horizontal transverse edge (9023) of the horizontal support;

a vertical support (9022); comprises a vertical support front vertical edge (9026), a vertical support upper horizontal edge (9027) and a vertical support lower bottom edge (9028); the vertical support upper horizontal edge (9027) and the vertical support lower bottom edge (9028) are respectively arranged at the upper side and the lower side of the vertical support front vertical edge (9026); the upper horizontal edge (9027) of the vertical support is connected with the front vertical edge (9024) of the horizontal support;

a front frame inserting seam is arranged between the top plate main body (101) and the top plate front folding edge (108) and is used for inserting an upper frame front folding edge (9012) of an upper frame (901) of the front frame (9);

the front vertical edge (9024) of the horizontal support is connected with the upper horizontal edge (9027) of the vertical support; the horizontal transverse edge (9023) of the horizontal support is consistent with the front-back size of the flat folded edge (9015) of the upper frame;

the left door panel (7) and the right door panel (8) are respectively connected with the left frame (903) and the right frame (904) through hinges to serve as file cabinet doors.

2. The file cabinet with few seams and good flatness of claim 1, which is characterized in that: the upper end surface inner triangle (4043) and the upper end surface outer triangle (4044) are all isosceles right triangles.

3. The file cabinet with few seams and good flatness of claim 1, which is characterized in that: the bottom plate left folding edge (603) and the bottom plate right folding edge (604) are provided with at least two stamping protrusions (605), the bottom plate fixing strip (405) is provided with two bottom plate fixing grooves (4051), and the bottom plate fixing grooves (4051) are combined with the stamping protrusions of the bottom plate (6) to prevent the bottom plate from moving up and down and left and right.

4. The file cabinet with few seams and good flatness of claim 1, which is characterized in that: the left side and the right side of the back plate main body (301) are provided with laminate support mounting grooves (310); the bottom edge (9031) of the left frame is provided with a row hole for installing a movable laminate; the number and position of the holes are corresponding to the mounting slots (310) of the plate support.

5. The file cabinet with few seams and good flatness of claim 1, which is characterized in that: and the front straight folded edge (9013) of the upper frame is provided with an anti-collision corner pad mounting hole and a latch hook hanging groove.

6. The file cabinet with few seams and good flatness of claim 1, which is characterized in that: the file cabinet with the thin edge further comprises two bottom foot plates (11), and the bottom foot plates (11) are fixed on the front frame (9) and the back plate (3) through screws respectively.

7. The file cabinet with few seams and good flatness of claim 6, which is characterized in that: the structure of the footing plate (11) is as follows: the baseboard (11) is formed by constructing an eighth thin iron plate metal plate and comprises a rectangular baseboard upper plate (1101), four supporting vertical plates arranged at four edges below the baseboard upper plate (1101), and four supporting bottom plates arranged at the outer sides of the edges of the four supporting vertical plates; the four supporting vertical plates are respectively a left supporting vertical plate (1102) arranged at the left side edge of the base plate upper plate (1101), a right supporting vertical plate (1103) arranged at the right side edge of the base plate upper plate (1101), a front supporting vertical plate (1104) arranged at the front side edge of the base plate upper plate (1101) and a rear supporting vertical plate (1105) arranged at the rear side edge of the base plate upper plate (1101); the four supporting bottom plates are respectively a left supporting bottom plate (1106) arranged on the outer side of the left supporting vertical plate (1102), a right supporting bottom plate (1107) arranged on the outer side of the right supporting vertical plate (1103), a front supporting bottom plate (1108) arranged on the outer side of the front supporting vertical plate (1104) and a rear supporting bottom plate (1109) arranged on the outer side of the rear supporting vertical plate (1105);

the front end and the rear end of the baseboard upper plate (1101) are respectively provided with a screw connecting hole (1120), at least one clamping piece (1121) is respectively arranged on the corresponding left supporting vertical plate (1102) and the right supporting vertical plate (1103), and the clamping pieces (1121) are formed by stamping the corresponding supporting vertical plate metal plates.

8. The file cabinet with few seams and good flatness of claim 1, which is characterized in that: the file cabinet with the small seams and the good flatness is further provided with a laminate (12), and the laminate (12) is supported between the left frame (903) and the right frame (904) through a row of holes formed in the left frame (903) and the right frame (904) and a laminate support mounting groove (310) formed in the back plate (3).