CN117722417A

CN117722417A - Hidden connecting structure of sectional material furniture and assembling method thereof

Info

Publication number: CN117722417A
Application number: CN202311097803.9A
Authority: CN
Inventors: 戚昌华
Original assignee: Foshan Jintanya Hardware & Plastic Products Co ltd
Current assignee: Foshan Jintanya Hardware & Plastic Products Co ltd
Priority date: 2023-08-29
Filing date: 2023-08-29
Publication date: 2024-03-19

Abstract

The invention provides a hidden connecting structure of sectional material furniture and an assembling method thereof, relating to the technical field of aluminum alloy furniture, and comprising a first sectional material plate, a second sectional material plate, a chute and a slide fastener; the first profile plate is provided with a first installation position, and the sliding groove is assembled at the first installation position; the second profile plate is provided with a second installation position, and the slide fastener is assembled at the second installation position; the first base body is provided with a locking mechanism; the locking mechanism comprises a clamping piece and a pressing piece for pushing the clamping piece outwards. The sliding groove and the sliding buckle are correspondingly embedded into the first sectional material plate and the second sectional material plate to be fixed, so that the first sectional material plate or the second sectional material plate can not be perforated or screwed during assembly, and the surface of the first sectional material plate or the second sectional material plate can not be damaged; and the sliding groove and the sliding buckle are correspondingly fixed on the first section bar plate and the second section bar, so that the hiding effect is good, the structure is attractive, and the assembly and the disassembly are easy.

Description

Hidden connecting structure of sectional material furniture and assembling method thereof

Technical Field

The invention relates to the technical field of sectional furniture, in particular to a hidden connecting structure of sectional furniture and an assembly method thereof.

Background

Modern society family life material is more and more abundant, every family house fitment, the aluminium alloy furniture fire prevention dampproofing and moth proofing that requires higher and higher to whole house customization furniture, healthy zero formaldehyde, recoverable, advantages such as green obtains market approval, become important new substrate in the novel whole house customization furniture panel, extensively be used for whole house self-contained furniture customization, in view of present aluminium alloy furniture structural installation, there is the connection unreasonable between longitudinal plate and the diaphragm, the connecting piece has the screw hole to expose and influence pleasing to the eye on the diaphragm, and need fix with lamb screw etc. complex operation, current mounting means is fixed singlely, can not nimble light installation.

In the prior art, chinese patent literature (patent number: CN 201720566091.4, patent name: a vertical connection structure of aluminum alloy furniture boards) comprises an A board and a B board vertically connected with the A board, wherein a slot is arranged on one side of the A board, which is connected with the B board, and opposite convex sliding strips are arranged on the upper side and the lower side of the slot; the corresponding position of the connection of the plate B and the plate A is connected with a frame-shaped cutting matched with the slot, two opposite sides of the cutting are plane, one side of the cutting is connected with the plate B, the other side of the cutting is opposite to the slot, a nail slot is arranged, and two opposite sides of the cutting are respectively provided with a concave sliding rail; a plurality of screws penetrate through the nail grooves and one side, connected with the plate B, of the cutting, the cutting is fixedly connected with the plate B, the cutting is inserted into the inserting grooves, and the two convex sliding strips are respectively inserted into the two concave sliding rails in a relative mode.

The installation mode of the vertical connection structure is that the cutting 5 is placed against the B plate 2, then a plurality of screws penetrate through the nail groove 6 and one side, connected with the B plate 2, of the cutting 5, the cutting 5 is fixedly connected with the B plate 2, the cutting 5 is inserted into the slot 3, the two convex sliding strips 4 are respectively inserted into the two concave sliding rails 7 in a relative manner, and the vertical connection between the A plate 1 and the B plate 2, namely the vertical connection between the cabinet partition board and the right side plate can be realized. However, the above structure has the following defects: firstly, the screw is directly driven onto the B plate 2, so that the surface of the plate 2 is damaged; if the position of the cutting 5 corresponding to the B plate 2 is inaccurate during assembly by a worker, the screw needs to be taken out when the adjustment is needed in the later period, and the cutting 5 is driven in again after the adjustment is needed, so that the operation is complicated, and the surface of the plate 2 is secondarily damaged; finally, the fixing structure is unfavorable for freely disassembling the plate A and the plate B, and the plate A and the plate B can be disassembled only after the screws are unscrewed by means of a tool, so that the fixing structure is quite inconvenient.

Based on this, there is a need to develop a connecting member for sectional furniture which is easy to disassemble, so as to overcome the above-mentioned drawbacks.

Disclosure of Invention

The invention overcomes the defects in the prior art, and provides the hidden connecting structure of the sectional furniture and the assembly method thereof, which are convenient to assemble and disassemble, do not damage the surface of the sectional plate, and have convenient assembly and disassembly and ingenious structure.

In order to solve the technical problems, the invention is realized by the following technical scheme:

a hidden connecting structure of sectional furniture comprises a first sectional material plate, a second sectional material plate, a chute and a slide fastener; the first profile plate is provided with a first installation position, and the sliding groove is assembled at the first installation position; the second profile plate is provided with a second installation position, and the slide fastener is assembled at the second installation position;

the sliding groove comprises a first base body, the shape and the size of the first base body are matched with those of the first installation position, and the first base body is embedded into the first installation position; when the first base body is embedded into the first installation position, the surface of the first base body is level with or lower than the surface of the first profile plate; the first base body is provided with a locking mechanism; the locking mechanism comprises a clamping piece and a pressing piece for pushing the clamping piece outwards;

the slide fastener comprises a second base body, the shape and the size of the second base body are matched with those of the second installation position, and the second base body is embedded into the second installation position; the side edges of the second profile plates are flush, the second installation position is arranged on the side edges of the second profile plates, and when the second base body is embedded into the second installation position, the surface of the second base body is lower than the side edges of the second profile plates; the left side and the right side of the second substrate are respectively provided with a fixing groove for driving in a screw; the second basal body is also connected with a positioning flank;

the first base body is provided with an assembly position, the second base body is outwards provided with a hanging head, and the hanging head is in sliding connection with the assembly position, so that the first profile plate and the second profile plate are mutually perpendicular and fixed.

Still further, the assembly position includes that the head end is high, the tail end is low inclined plane and narrow draw-in groove, first base member is provided with the card location, card location and inclined plane intercommunication.

Further, the narrowing clamping groove is formed with an inward convex anti-dislocation groove.

Further, the number of the clamping pieces is two, the clamping pieces are positioned at the left side and the right side of the first base body, and the first base body is reserved with a retraction space of the clamping pieces;

the pressing piece is a first spring, a first spring installation position is arranged in the first base body in a penetrating manner, and the first spring is positioned in the first spring installation position; one end of the first spring is connected with the clamping piece on one side, and the other end of the first spring is connected with the clamping piece on the other side;

or, the pressing member is a screw which is longitudinally screwed into the retraction space.

Still further, the bayonet is seted up to first base member, the screens piece is provided with the fixture block, the fixture block is located in the bayonet.

Still further, the assembly site is one or two; when the number of the assembly positions is two, the two assembly positions are symmetrically arranged on the first substrate.

Further, the positioning flank is 7-shaped; the positioning side wings are connected to the second substrate in an upward protruding way; the positioning side wings comprise easy-to-break heads, and the lower end faces of the easy-to-break heads are higher than the upper surface of the second substrate.

Further, the second base body is provided with a limiting piece, the limiting piece is connected with one end of the second spring, and the other end of the second spring is connected with the hanging head;

the second substrate is flat, and the surface of the second substrate is provided with a hollow space; the end of the hanging head is any one of conical, round head or ship bottom.

Further, the fixing groove is provided longitudinally and gradually narrowed along the screwing direction of the screw.

The inner edge sealing piece is fixedly embedded on the side edge of the second section bar plate; a through hole is reserved on the inner edge sealing piece corresponding to the second installation position; the inner edge sealing member comprises an insertion plate, and friction lines are formed on the surface of the insertion plate.

The assembly method of the hidden connecting structure of the sectional material furniture is applied to the hidden connecting structure of the sectional material furniture and comprises the following steps of:

the clamping pieces at two sides of the sliding groove are pressed by hands, so that the clamping pieces at two sides are close to the middle part, and then the sliding groove is placed into a first installation position of the first section plate; after the hand is loosened, the clamping piece is pushed outwards under the action of the pressing piece so as to be locked in the first installation position;

pushing the slide fastener into a second installation position of the second profile plate until the slide fastener cannot be pushed under the limiting action of the positioning side wing; then driving a screw along the fixing groove to enable the slide fastener to be abutted against the inner wall of the second installation position, so as to achieve the locking effect; then the easy-to-break head of the positioning side wing is broken away;

and the hanging head of the slide fastener is inserted in a sliding manner along the assembling position of the sliding groove until the hanging head is completely pushed into the narrowing clamping groove of the assembling position, so that the first sectional material plate and the second sectional material plate can be assembled vertically.

Compared with the prior art, the invention has the beneficial effects that:

the sliding groove and the sliding buckle are correspondingly embedded into the first section bar plate and the second section bar plate to be fixed, so that the first section bar plate or the second section bar plate can not be perforated or screwed during assembly, and the surface of the first section bar plate or the surface of the second section bar plate can not be damaged.

When the first base body of the sliding groove is embedded into the first installation position, the surface of the first base body is level with or lower than the surface of the first profile plate; when the second base body of the slide fastener is embedded into the second installation position, the surface of the second base body is lower than the side edge of the second profile plate; thereby the hiding effect of the sliding groove and the sliding buckle is good, and the structure is beautiful.

The first base body is provided with an assembly position, the second base body is outwards provided with a hanging head, and the hanging head is in sliding insertion connection with the assembly position, so that the first profile plate and the second profile plate are mutually perpendicular and fixed; when the first section bar plate and the second section bar plate are required to be separated, the hanging head is reversely pulled out from the assembly position, and the assembly and the disassembly are very convenient.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, in which:

FIG. 1 is a perspective view of a first embodiment of a chute, wherein the assembly location is one;

FIG. 2 is a second perspective view of the first embodiment of the chute, wherein the assembly position is one;

FIG. 3 is a top view of a first embodiment of the chute wherein the assembly location is one;

FIG. 4 is a cross-sectional view of a first embodiment of the chute, wherein the assembly position is one;

FIG. 5 is an exploded view of a first embodiment of the chute, wherein the assembly site is one;

FIG. 6 is a third perspective view of the first embodiment of the chute, wherein the number of assembly positions is two, and the assembly positions are arranged symmetrically up and down;

FIG. 7 is a perspective view of a second embodiment of the chute, wherein the assembly position is one;

FIG. 8 is an exploded view of a second embodiment of the chute, wherein the assembly site is one;

FIG. 9 is a perspective view of the first embodiment of the slider;

FIG. 10 is an exploded view of the first embodiment of the slider;

FIG. 11 is a side view of the first embodiment of the slider;

FIG. 12 is a perspective view of a second embodiment of a slider;

FIG. 13 is a perspective view of a third embodiment of a slider;

FIG. 14 is a schematic view of the chute mounted on the first profile plate;

FIG. 15 is a schematic view of the slider mounted on a second profiled plate;

FIG. 16 is a top view of the slider mounted on the second profiled plate;

FIG. 17 is a schematic view showing the separation of the slide slot from the slider, wherein the assembly position of the slide slot is one;

FIG. 18 is a drawing showing the first and second profile plates separated from each other, wherein the assembly position using the chute is one;

FIG. 19 is a schematic view showing the separation of the slide groove from the slider, wherein the slide groove has two assembly positions;

FIG. 20 is a drawing showing the first and second profile plates separated from each other, with two assembly positions using the slide slots;

FIG. 21 is a schematic view of the side edge of a second profiled sheet with an inner edge banding element added thereto;

FIG. 22 is a schematic view of the second profile plate, inner edge seal, and slider in a separated condition;

fig. 23 is an enlarged view of circle a in fig. 22.

In the figure: 1. a first profile plate; 101. a first mounting location; 2. a second profile plate; 201. a second mounting location; 3. a chute; 301. a first substrate; 302. a clamping piece; 3021. a clamping block; 303. a pressing member; 304. assembling the position; 3041. an inclined surface; 3042. narrowing the clamping groove; 30421. the inward bulge prevents dislocation; 305. positioning a card; 306. a bayonet; 307. a retraction space; 4. a slide fastener; 401. a second substrate; 4011. hollow space; 402. a fixing groove; 403. positioning the side wings; 4031. the head is easy to break off; 404. a hanging head; 405. a limiting piece; 406. a second spring; 5. a screw; 6. an inner edge banding member; 601. a through hole; 602. an insertion plate; 6021. rubbing lines.

Description of the embodiments

The preferred embodiments of the present invention will be described below with reference to the accompanying drawings, it being understood that the preferred embodiments described herein are for illustration and explanation of the present invention only, and are not intended to limit the present invention.

As shown in fig. 1 to 20, a concealed connection structure of sectional furniture comprises a first sectional material plate 1, a second sectional material plate 2, a chute 3 and a slide fastener 4; the first profile plate 1 is provided with a first installation position 101, and the chute 3 is assembled at the first installation position 101; the second profile plate 2 is provided with a second installation position 201, and the slide fastener 4 is assembled at the second installation position 201; the first profile plate 1 and the second profile plate 2 are matched with each other through the sliding groove 3 and the sliding buckle 4, so that the assembly and the disassembly are realized.

Specifically, the chute 3 includes a first base 301, the first base 301 matches the shape and size of the first mounting location 101, and the first base 301 is embedded into the first mounting location 101; the first installation position 101 is formed in the first section bar plate 1 in advance when the section bar plate is processed in the early stage, the specification and the position are relatively stable and unified when the section bar plate is processed in the early stage, and the workers do not need to operate in the field when the section bar plate is assembled in the later stage, so that the assembly efficiency is improved, the operation difference of different workers is reduced, and the unified specification is facilitated.

In addition, as shown in fig. 14, when the first base 301 is inserted into the first mounting position 101, the surface of the first base 301 is flush with the surface of the first profile plate 1 or lower than the surface of the first profile plate 1; in this embodiment, the surface of the first base 301 is flush with the surface of the first profiled plate 1 after installation, which makes the first base 301 (i.e. the chute 3) have good hiding performance, and does not protrude from the surface of the first profiled plate 1, so that the surface of the first profiled plate 1 is flush, and the connection compactness of the first profiled plate 1 and the second profiled plate 2 is enhanced.

The first base 301 is provided with a locking mechanism; the locking mechanism comprises a clamping piece 302 and a pressing piece 303 pushing the clamping piece 302 outwards; the number of the clamping pieces 302 is two, and the clamping pieces are positioned at two sides of the first base 301; after the first base 301 is embedded into the first mounting position 101, the pressing member 303 pushes the clamping members 302 outward, so that the distance between the outermost ends of the clamping members 302 on both sides is greater than that of the first mounting position 101, and the chute 3 is fixed in the first profile plate 1.

The slider 4 comprises a second base 401, the second base 401 is matched with the second mounting position 201 in shape and size, and the second base 401 is embedded into the second mounting position 201; as seen in fig. 15, the side edges of the second profiled plate 2 are flush, the second mounting locations 201 are provided on the side edges of the second profiled plate 2, and when the second base 401 is embedded in the second mounting locations 201, the surface of the second base 401 is lower than the side edges of the second profiled plate 2; since the side edge of the second profile plate 2 is attached to the first profile plate 1, the side edge of the second profile plate 2 is set flush, and the surface of the second substrate 401 is lower than the side edge of the second profile plate 2, so that the second substrate 401 is prevented from protruding out of the side edge of the second profile plate 2, and the connection compactness of the second profile plate 2 and the first profile plate 1 is affected.

The left and right sides of the second base 401 are provided with fixing grooves 402 for driving in the screws 5; the second base 401 is also connected with a positioning flank 403; the slide fastener 4 is positioned and locked in the second profile plate 2 by pushing the second base 401 into the second mounting position 201 until the positioning shoulder 403 is stopped at the side edge of the second profile plate 2, and then driving the screw 5 into the fixing groove 402, wherein the screw 5 can abut against the second base 401 and the inner wall of the second mounting position 201, thereby locking the slide fastener 4 in the second profile plate 2, as shown in fig. 15 and 16.

As seen in connection with fig. 11, in this solution, the positioning flanks 403 are therefore designed in a "7" shape, and the positioning flanks 403 are connected to the second base body 401 in an upwardly protruding manner; after the slider 4 is locked on the second section bar 2 in the above operation, the upper end of the positioning side wing 403 protrudes from the side edge of the second section bar 2, so the positioning side wing 403 is designed to include the easy-to-break head 4031, and the easy-to-break head 4031 is just broken away, so that the side edge of the second section bar 2 remains flush (except the hanging head 404, no other part of the slider 4 protrudes from the side edge of the second section bar 2); the lower end surface of the easy-to-break head 4031 is higher than the upper surface of the second base 401, that is, when the slider 4 is pushed toward the second mounting position 201 and the lower end surface of the easy-to-break head 4031 contacts the side edge of the second profile plate 2 to stop, the upper surface of the second base 401 is lower than the side edge of the second profile plate 2, so that a space is reserved for the screw head of the driving screw 5, and the side edge of the second profile plate 2 is not protruded.

The first base 301 is provided with an assembly position 304, the second base 401 is outwardly provided with a hanging head 404, and when the sliding groove 3 and the sliding buckle 4 are correspondingly fixed on the first profile plate 1 and the second profile plate 2, the first base and the second base are slidably inserted into the assembly position 304 through the hanging head 404, so that the first profile plate 1 and the second profile plate 2 are mutually and vertically fixed.

The mounting bit 304 includes an inclined surface 3041 with a high head end and a low tail end, and a narrowed card slot 3042, and the first base 301 is provided with a card position 305, and the card position 305 communicates with the inclined surface 3041.

The fitting bit 304 is used for inserting the hanging head 404 of the slider 4, the hanging head 404 slides in along the inclined surface 3041 and is hooked in the narrowed clamping groove 3042, the shape structure of the hanging head 404 is similar to the shape structure of the head of a nail or a screw, the head position is provided with a transverse extending surface, and the opening of the clamping position 305 is used for accommodating the transverse extending surface of the head of the hanging head 404.

The narrow-down groove 3042 is formed with an inward protruding anti-slip-out position 3021, so that the hanging head 404 is not easy to be loosened by itself under the action of the inward protruding anti-slip-out position 3021 after being pushed into the deepest part of the narrow-down groove 3042.

The number of the clamping pieces 302 is two, the clamping pieces are positioned at the left side and the right side of the first base 301, and the retraction space 307 of the clamping pieces 302 is reserved in the first base 301;

the pressing member 303 is a first spring, and a first spring mounting position is provided inside the first base 301 in a penetrating manner, and the first spring is located in the first spring mounting position; one end of the first spring is connected with the clamping piece 302 on one side, and the other end of the first spring is connected with the clamping piece 302 on the other side;

when the chute 3 is put into the first installation position 101, the clamping pieces 302 on two sides are pressed inwards in opposite directions by hands, so that the clamping pieces 302 move towards the retraction space 307; when the sliding groove 3 enters the first installation position 101 and is released, the clamping piece 302 can reset under the action of the first spring, so that the clamping effect is achieved.

Or as shown in fig. 7 and 8, the second embodiment of the chute is a second embodiment of the chute, and the difference between the structures is that the pressing member 303 is a screw 5, and when the chute 3 is placed in the first mounting position 101, the screw 5 is longitudinally screwed into the retraction space, so that the effect of pushing the clamping member 302 outwards to achieve the clamping is achieved.

The first base 301 is provided with a bayonet 306, the clamping piece 302 is provided with a clamping block 3021, and the clamping block 3021 is located in the bayonet 306, so that the clamping piece 302 is limited, and the clamping piece 302 cannot be loosened from the first base 301.

The assembly bits 304 may be one or two; when the assembly position 304 is one, the application is that the first profile plate 1 and the second profile plate 2 are fixed in a T shape as shown in fig. 17 and 18; when the number of the assembly points 304 is two, the two assembly points 304 are symmetrically arranged on the first base 301, and the application is that as shown in fig. 19 and 20, the first assembly point 101 is arranged through the first profiled sheet 1, so that the first profiled sheet 1 and the second profiled sheets 2 on two sides are fixed in a cross shape.

The second base 401 is provided with a limiting piece 405, the limiting piece 405 is connected with one end of a second spring 406, and the other end of the second spring 406 is connected with the hanging head 404; after the hanging head 404 is put into the second base 401, the second spring 406 is put into the hanging head, and finally the limiting piece 405 is put into the hanging head (the limiting piece 405 is clamped and fixed in the second base 401), so that the hanging head 404 has the characteristic of retraction to be matched with the connection with the assembling bit 304.

The second substrate 401 is flat, and hollowed-out portions 4011 are formed on the surface of the second substrate 401; the flat shape of the second matrix 401 is matched with the mounting position of the second mounting position 201, the second matrix 401 is manufactured by adopting an injection molding process, the material quantity can be reduced by the design of the hollowed-out position 4011, so that the cost is effectively saved, and the hollowed-out position 4011 also achieves the effect of enhancing friction force when being held by hands, so that the second matrix 401 cannot easily slip.

The end of the hanging head 404 is any one of conical, round head or ship bottom; as shown in fig. 11, the end of the hanging head 404 is conical; as shown in fig. 12, the end of the hanging head 404 is rounded; as shown in fig. 13, the end of the hitch 404 is bottom-shaped; in the three embodiments, the end shapes of the hanging head 404 are different, and other structures are basically the same, and the end shapes of the hanging head 404 are different, so that the hanging head can be flexibly matched and selected for use with different sliding grooves.

Further, the fixing groove 402 is provided longitudinally and gradually narrowed along the screwing-in direction of the screw 5; this design is advantageous in enhancing the tightening force between the screw 5 and the fixing groove 402, enhancing the fixing effect.

As shown in fig. 21 to 23, as a more preferable embodiment of the present connecting structure, an inner edge sealing member 6 is further included, and the inner edge sealing member 6 is punched out of an aluminum profile using a die. The inner edge sealing piece 6 is inlaid and fixed on the side edge of the second section plate 2; through holes 601 are reserved on the inner edge sealing piece 6 corresponding to the second installation positions 201, so that the sliding buckles 4 can conveniently penetrate through the through holes 601 and are inserted into the second installation positions 201. In addition, the inner edge sealing member 6 comprises an insertion plate 602, friction lines 6021 are formed on the surface of the insertion plate 602, friction lines 6021 are arranged to be beneficial to enhancing friction force between the insertion plate 602 and the inside of the second sectional material plate 2, so that the inner edge sealing member 6 is not easy to loose from the second sectional material plate 2, and stability is improved. The surface of the inner edge sealing piece 6 is smooth, when the second sectional material plate 2 is assembled with the first sectional material plate 1, the surface of the inner edge sealing piece 6 is in contact with the surface of the first sectional material plate 1, therefore, the inner edge sealing piece 6 is additionally arranged on the side edge of the second sectional material plate 2, so that the second sectional material plate 2 is protected on one hand, and the side edge of the second sectional material plate 2 is prevented from being too sharp to cause cutting injury to hands or scratch and scratch to the surface of the first sectional material plate 1 on the other hand, and the structure is ingenious.

the clamping pieces 302 on two sides of the sliding groove 3 are pressed by hands, the clamping pieces 302 on two sides are close to the middle part, and then the sliding groove 3 is placed into the first installation position 101 of the first section plate 1; after releasing the hand, the clamping member 302 is pushed out under the action of the pressing member 303 so as to be locked in the first installation position 101;

pushing the slider 4 into the second installation position 201 of the second profile plate 2 (after the inner edge sealing member 6 is embedded and fixed on the side edge of the second profile plate 2 if the second profile plate 2 is provided with the inner edge sealing member 6, pushing the slider 4 into the second installation position 201 of the second profile plate 2 aiming at the through hole 601 until the slider cannot be pushed under the limit action of the positioning side wings 403; next, driving the screw 5 along the fixing groove 402 to enable the slide fastener 4 to be abutted against the inner wall of the second installation position 201, so as to achieve the locking effect; then the easy-to-break head 4031 of the positioning side wing 403 is broken away;

the hanging head 404 of the slide fastener 4 is inserted in a sliding manner along the assembling position 304 of the slide groove 3 until the hanging head 404 is completely pushed into the narrowing clamping groove 3042 of the assembling position 304, so that the first profile plate 1 and the second profile plate 2 can be mounted vertically.

Finally, it should be noted that: although the present invention has been described in detail with reference to the embodiments, it should be understood that the invention is not limited to the preferred embodiments, but is capable of modification and equivalents to some of the features described in the foregoing embodiments, but is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.

Claims

1. The hidden connecting structure of the sectional material furniture is characterized by comprising a first sectional material plate (1), a second sectional material plate (2), a chute (3) and a slide fastener (4); the first profile plate (1) is provided with a first installation position (101), and the sliding groove (3) is assembled at the first installation position (101); the second profile plate (2) is provided with a second installation position (201), and the slide fastener (4) is assembled at the second installation position (201);

the sliding groove (3) comprises a first base body (301), the first base body (301) is matched with the first installation position (101) in shape and size, the first base body (301) is embedded into the first installation position (101), and when the first base body (301) is embedded into the first installation position (101), the surface of the first base body (301) is level with the surface of the first profile plate (1) or lower than the surface of the first profile plate (1); the first base body (301) is provided with a locking mechanism; the locking mechanism comprises a clamping piece (302) and a pressing piece (303) pushing the clamping piece (302) outwards;

the slider (4) comprises a second base body (401), the second base body (401) is matched with the second installation position (201) in shape and size, and the second base body (401) is embedded into the second installation position (201); the side edges of the second profile plates (2) are flush, the second installation position (201) is arranged on the side edges of the second profile plates (2), and when the second base body (401) is embedded into the second installation position (201), the surface of the second base body (401) is lower than the side edges of the second profile plates (2); the left side and the right side of the second base body (401) are respectively provided with a fixing groove (402) for driving in a screw (5); the second basal body (401) is also connected with a positioning flank (403);

the first base body (301) is provided with an assembly position (304), the second base body (401) is outwards extended and provided with a hanging head (404), and the hanging head (404) is slidably inserted in the assembly position (304), so that the first profile plate (1) and the second profile plate (2) are mutually perpendicular and fixed.

2. The concealed connecting structure of sectional furniture according to claim 1, wherein the assembly position (304) comprises an inclined surface (3041) with a high head end and a low tail end and a narrowed clamping groove (3042), the first base body (301) is provided with a clamping position (305), and the clamping position (305) is communicated with the inclined surface (3041).

3. The concealed connecting structure of sectional furniture according to claim 2, wherein the narrowed neck (3042) is formed with an inward protruding anti-dislocation (3021).

4. A concealed connection structure for sectional furniture according to any one of claims 1 to 3, wherein the number of the clamping members (302) is two, and the clamping members are positioned at the left and right sides of the first base body (301), and the first base body (301) is reserved with a retraction space (307) of the clamping members (302);

the pressing piece (303) is a first spring, a first spring installation position is arranged in the first base body (301) in a penetrating manner, and the first spring is positioned in the first spring installation position; one end of the first spring is connected with a clamping piece (302) on one side, and the other end of the first spring is connected with the clamping piece (302) on the other side;

or, the pressing member (303) is a screw (5), and the screw (5) is longitudinally screwed into the retraction space (307).

5. The concealed connecting structure of sectional furniture according to claim 4, wherein the first base body (301) is provided with a bayonet (306), the clamping piece (302) is provided with a clamping block (3021), and the clamping block (3021) is located in the bayonet (306).

6. -a concealed connection structure for profiled furniture according to claim 5, characterized in that the fitting locations (304) are one or two; when the number of the assembly positions (304) is two, the two assembly positions (304) are symmetrically arranged on the first substrate (301).

7. A concealed connection structure of sectional furniture according to claim 1, characterized in that the positioning flanks (403) are "7" -shaped; the positioning flank (403) is connected to the second base body (401) in an upward protruding way; the positioning side wings (403) comprise easy-to-break heads (4031), and the lower end surfaces of the easy-to-break heads (4031) are higher than the upper surface of the second substrate (401); the fixing groove (402) is longitudinally arranged and gradually narrowed along the screwing direction of the screw (5).

8. The hidden connecting structure of sectional furniture according to claim 7, wherein the second base body (401) is provided with a limiting piece (405), the limiting piece (405) is connected with one end of a second spring (406), and the other end of the second spring (406) is connected with the hanging head (404);

the second substrate (401) is flat, and a hollow hole (4011) is formed in the surface of the second substrate (401); the end of the hanging head (404) is any one of conical, round head or ship bottom.

9. The concealed connecting structure of sectional furniture according to claim 7, further comprising an inner edge sealing member (6), wherein the inner edge sealing member (6) is fixedly embedded on the side edge of the second sectional board (2); a through hole (601) is reserved on the inner edge sealing piece (6) corresponding to the second installation position (201); the inner edge sealing member (6) comprises an insertion plate (602), and friction lines (6021) are formed on the surface of the insertion plate (602).

10. The assembling method of the hidden connecting structure of the sectional material furniture is characterized by being applied to the hidden connecting structure of the sectional material furniture and comprising the following steps of:

the clamping pieces (302) at two sides of the sliding groove (3) are pressed by hands, so that the clamping pieces (302) at two sides are close to the middle part, and then the sliding groove (3) is placed into the first installation position (101) of the first profile plate (1); after the hands are loosened, the clamping piece (302) is pushed out under the action of the pressing piece (303) so as to be locked in the first installation position (101);

pushing the slide fastener (4) into a second installation position (201) of the second profile plate (2) until the slide fastener cannot be pushed under the limiting action of the positioning side wings (403); then, a screw (5) is driven along the fixing groove (402), so that the slide fastener (4) is abutted against the inner wall of the second installation position (201) to achieve the locking effect; then the easy-to-break head (4031) of the positioning side wing (403) is broken away;

the hanging head (404) of the slide fastener (4) is inserted in a sliding manner along the assembly position (304) of the sliding groove (3) until the hanging head (404) is completely pushed into the narrowing clamping groove (3042) of the assembly position (304), and then the first profile plate (1) and the second profile plate (2) can be mounted vertically.