CN210696516U

CN210696516U - Wood table board decorative edge protection structure

Info

Publication number: CN210696516U
Application number: CN201920512393.2U
Authority: CN
Inventors: 孔凡冠
Original assignee: Foshan Guanhong Metal Products Co ltd
Current assignee: Foshan Guanhong Metal Products Co ltd
Priority date: 2019-04-16
Filing date: 2019-04-16
Publication date: 2020-06-09
Anticipated expiration: 2029-04-16

Abstract

The utility model relates to a wood table board decorative edge-protecting structure, which comprises a wood table board, an aluminum section seat, an aluminum section decorative cover, a left elastic limit component, a right elastic limit component and a plurality of positioning screws, wherein the wood table board is provided with a mounting groove; the aluminum profile seat is provided with an embedding groove, an upper limiting groove, a left through hole and a right through hole; the aluminum profile decorative cover is provided with an upper convex strip part, a lower convex strip part and a limiting convex strip, the lower convex strip part is provided with a positioning groove, and the bottom of the positioning groove is provided with a chute bottom plane; the left elastic limiting component and the right elastic limiting component are both installed in the embedding groove, the aluminum section seat is embedded in the installation groove and locked by the positioning screws, the aluminum section decorative cover covers the front wall of the wood table board and the aluminum section seat, the upper convex strip portion and the lower convex strip portion are both embedded in the embedding groove, the limiting convex strips are embedded in the upper limiting groove, and the left elastic limiting component and the right elastic limiting component are elastically applied to the bottom plane of the chute. The utility model has the advantages of reliable structure, convenient updating, good environmental protection and the like.

Description

Wood table board decorative edge protection structure

Technical Field

The utility model relates to a furniture product field, especially a table safe edge structure.

Background

At present, a plurality of table plates are made of wood plates, and decorative strip protective edges are arranged on the outer walls of the wood table plates. The existing decorative strip edge protector is usually adhered to the outer wall of a wood desk plate through glue, and the decorative strip edge protector is easy to fall off after being used for a long time, so that inconvenience is brought to people. Because the decorative strip safe edge is fixed, the decorative strip safe edge is difficult to detach and replace, which brings inconvenience for people to update the decorative strip safe edge. And the use of glue is not environment-friendly.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to solve above-mentioned problem and not enough, provide a safe edge structure is decorated to wood table board, this safe edge structure is decorated to wood table board has the structure reliable, update advantages such as convenient, the feature of environmental protection is good.

The technical scheme of the utility model is realized like this:

a wood table board decoration edge protection structure is characterized by comprising a wood table board, an aluminum section seat, an aluminum section decoration cover, a left elastic limiting component, a right elastic limiting component and a plurality of positioning screws, wherein the lower edge of the front wall of the wood table board is provided with a mounting groove, and the mounting groove extends to the end faces of two ends of the wood table board; the aluminum profile seat is of a rod-shaped structure with a rectangular cross section, an embedding groove is formed in the front surface of the aluminum profile seat and extends along the length direction of the aluminum profile seat, the embedding groove extends to the end faces of two ends of the aluminum profile seat, an upper limiting groove is formed in the upper groove wall of the embedding groove and extends along the length direction of the aluminum profile seat, the upper limiting groove extends to the end faces of the two ends of the aluminum profile seat, a left perforation and a right perforation are formed in the lower groove wall of the embedding groove respectively, the left perforation and the right perforation are arranged side by side in the left-right direction, and the left perforation and the right perforation penetrate through the bottom face of the aluminum profile seat; the aluminum profile decorative cover is of a strip-shaped structure, an upper convex strip portion and a lower convex strip portion which are vertically arranged are arranged on the rear surface of the aluminum profile decorative cover, the length direction of the upper convex strip portion and the length direction of the lower convex strip portion are enabled to be in the same direction as the length direction of the aluminum profile decorative cover, a limiting convex strip is arranged on the top surface of the upper convex strip portion, the length direction of the limiting convex strip is enabled to be in the same direction as the length direction of the upper convex strip portion, a positioning groove is formed in the bottom surface of the lower convex strip portion and extends along the length direction of the lower convex strip portion, the positioning groove extends to the end faces of the two ends of the lower convex strip portion, a chute bottom plane is arranged at the bottom of the positioning groove, and one end, close to the aluminum; the left elastic limiting assembly comprises a left top pressing block, a left connecting rod, a left spring and a left holding block, wherein a left inclined plane is arranged on the top surface of the left top pressing block, and the front edge of the left inclined plane is higher than the rear edge of the left inclined plane; the middle part of the left connecting rod is movably arranged in the left through hole in a penetrating way, the left spring is arranged in the embedding groove, the left spring is sleeved on the left connecting rod, the left jacking block is arranged in the embedding groove, the bottom of the left jacking block is fixedly connected with the upper end of the left connecting rod, the upper end and the lower end of the left spring are respectively and elastically acted on the bottom of the left jacking block and the lower groove wall of the embedding groove, the left holding block is arranged below the aluminum profile seat, and the top of the left holding block is fixedly connected with the lower end of the left connecting rod; the right elastic limiting assembly comprises a right top pressing block, a right connecting rod, a right spring and a right hand-held block, wherein the top surface of the right top pressing block is provided with a right inclined plane, and the front edge of the right inclined plane is higher than the rear edge of the right inclined plane; the middle part of the right connecting rod movably penetrates through the right through hole, the right spring is arranged in the embedding groove, the right spring is sleeved on the right connecting rod, the right jacking block is arranged in the embedding groove, the bottom of the right jacking block is fixedly connected with the upper end of the right connecting rod, the upper end and the lower end of the right spring respectively and elastically act on the bottom of the right jacking block and the lower groove wall of the embedding groove, the right hand-held block is arranged below the aluminum profile seat, and the top of the right hand-held block is fixedly connected with the lower end of the right connecting rod; the aluminum profile seat is embedded in the mounting groove, the positioning screws are arranged in the embedding groove side by side, the positioning screws penetrate through the aluminum profile seat and then are in threaded connection with the front wall of the wood table plate, the aluminum profile decorative cover covers the front wall of the wood table plate and the front wall of the aluminum profile seat, the upper convex strip portion and the lower convex strip portion are embedded in the embedding groove, the limiting convex strip is embedded in the upper limiting groove, and the left inclined plane and the right inclined plane are both pressed on the bottom plane of the chute.

The utility model has the advantages that: through the interact of left inclined plane and chute baseplane, can make the lower extreme rear side of aluminium alloy dress trim cover remove to just can make the lower extreme of aluminium alloy dress trim cover sticis on the front surface of aluminium alloy seat, help improving the reliability of aluminium alloy dress trim cover installation, location like this, thereby help improving the reliability of wood table board decoration safe edge structure. Through the interact of right inclined plane and chute baseplane, can make aluminium alloy trim cover's lower extreme rear side remove to just can make aluminium alloy trim cover's lower extreme sticis on the front surface of aluminium alloy seat, help improving the reliability of aluminium alloy trim cover installation, location like this, thereby help improving the reliability of wood table board decoration safe edge structure. Through offering out the mounting groove on the antetheca of wood table board to make the aluminium alloy seat inlay and put in the mounting groove, can play certain hidden effect to the aluminium alloy seat like this, thereby can avoid it to influence the aesthetic property of wood table board decoration safe edge structure. The upper limiting groove is formed in the upper groove wall of the embedding groove, and the limiting convex strip is embedded in the upper limiting groove, so that the upper part of the aluminum profile decorating cover can be well limited; the chute bottom plane is arranged, and the left inclined plane and the right inclined plane are tightly pressed on the chute bottom plane, so that the lower part of the aluminum profile decorative cover can be well limited; the aluminum section decorative cover can not fall off even if the aluminum section decorative cover is collided, and the reliability of the wood table board decorative edge protection structure is improved. Because the wood table board decorative edge protecting structure is provided with the left elastic limiting assembly and the right elastic limiting assembly, and the aluminum section decorative cover can be positioned through the left top pressing block in the left elastic limiting assembly and the right top pressing block in the right elastic limiting assembly; and can make left roof pressure piece business turn over constant head tank through the handheld piece in the left side on the spacing subassembly of pulling left elasticity, can make right roof pressure piece business turn over constant head tank through the handheld piece in the right side on the spacing subassembly of promotion right elasticity, just so can play the positioning action to the aluminium alloy dress trim cover fast, and can make the aluminium alloy dress trim cover lose the positioning action fast, thereby just can install or dismantle the aluminium alloy dress trim cover fast, and then can improve the installation of aluminium alloy dress trim cover greatly, the convenience of change, therefore, can improve the convenience that the aluminium alloy dress trim cover updates like this. Because, this wood table board is decorated safe edge structure need not use glue completely, consequently, this wood table board is decorated safe edge structure ten minutes's environmental protection.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic structural view of the section a-a in fig. 1 according to the present invention.

Fig. 3 is an enlarged schematic structural diagram of a portion B in fig. 2 according to the present invention.

Fig. 4 is an enlarged schematic structural view of a portion C in fig. 2 according to the present invention.

Fig. 5 is a schematic structural view of the middle wood table of the present invention.

Fig. 6 is a schematic structural view of the aluminum profile seat of the present invention.

Fig. 7 is a schematic structural view of the aluminum profile decorative cover of the present invention.

Fig. 8 is a schematic structural view of the middle left elastic limit component of the present invention.

Fig. 9 is a schematic structural view of the middle-right elastic limit component of the present invention.

Detailed Description

It should be noted that all the directional indicators (such as the top surface, the bottom surface, the left, the right, the front, and the rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

As shown in fig. 1 and 2, the wood table decoration edge protection structure of the present invention comprises a wood table plate 1, an aluminum section seat 2, an aluminum section decoration cover 3, a left elastic limit component 4, a right elastic limit component 5, and a plurality of positioning screws 6, wherein, as shown in fig. 5, a mounting groove 11 is provided on the lower edge of the front wall of the wood table plate 1, and the mounting groove 11 extends to the end faces of the two ends of the wood table plate 1; as shown in fig. 2 to 4 and 6, the aluminum profile base 2 is a rod-shaped structure with a rectangular cross section, the front surface of the aluminum profile base 2 is provided with an embedding groove 21, the embedding groove 21 extends along the length direction of the aluminum profile base 2, the embedding groove 21 extends to the end faces of the two ends of the aluminum profile base 2, the upper groove wall of the embedding groove 21 is provided with an upper limiting groove 22, the upper limiting groove 22 extends along the length direction of the aluminum profile base 2, the upper limiting groove 22 extends to the end faces of the two ends of the aluminum profile base 2, the lower groove wall of the embedding groove 21 is provided with a left through hole 23 and a right through hole 24, the left through hole 23 and the right through hole 24 are arranged side by side, and the left through hole 23 and the right through hole 24 both penetrate through the bottom face of the aluminum profile base 2; as shown in fig. 7, the aluminum profile decorative cover 3 has a strip structure, an upper convex strip portion 31 and a lower convex strip portion 32 are arranged vertically on the rear surface of the aluminum profile decorative cover 3, the length direction of the upper convex strip part 31 and the length direction of the lower convex strip part 32 are all the same as the length direction of the aluminum section decorative cover 3, the top surface of the upper convex strip part 31 is provided with a limit convex strip 33, the length direction of the limit convex strip 33 is the same as the length direction of the upper convex strip 31, the bottom surface of the lower convex strip 32 is provided with a positioning groove 34, and the positioning grooves 34 are extended along the length direction of the lower ridge portion 32, and the positioning grooves 34 are extended to both end faces of the lower ridge portion 32, a chute bottom plane 341 is arranged at the bottom of the positioning groove 34, and one end of the chute bottom plane 341 close to the aluminum section decorative cover 3 is higher than one end of the chute bottom plane 341 far away from the aluminum section decorative cover 3; as shown in fig. 8, the left elastic limiting assembly 4 includes a left pressing block 41, a left connecting rod 42, a left spring 43, and a left holding block 44, wherein a left inclined plane 411 is disposed on the top surface of the left pressing block 41, and the front edge of the left inclined plane 411 is higher than the rear edge of the left inclined plane 411; as shown in fig. 1, 2 and 3, the middle part of the left connecting rod 42 is movably inserted into the left through hole 23, the left spring 43 is arranged in the embedding groove 21, the left spring 43 is sleeved on the left connecting rod 42, the left pressing block 41 is arranged in the embedding groove 21, the bottom of the left pressing block 41 is fixedly connected with the upper end of the left connecting rod 42, the upper end and the lower end of the left spring 43 respectively and elastically act on the bottom of the left pressing block 41 and the lower groove wall of the embedding groove 21, the left holding block 44 is arranged below the aluminum profile seat 2, and the top of the left holding block 44 is fixedly connected with the lower end of the left connecting rod 42; as shown in fig. 9, the right elastic limiting component 5 includes a right pressing block 51, a right connecting rod 52, a right spring 53, and a right holding block 54, wherein a right inclined plane 511 is disposed on the top surface of the right pressing block 51, and the front edge of the right inclined plane 511 is higher than the rear edge of the right inclined plane 511; as shown in fig. 1, 2 and 4, the middle part of the right connecting rod 52 is movably inserted into the right through hole 24, the right spring 53 is arranged in the embedding groove 21, and the right spring 53 is sleeved on the right connecting rod 52, the right pressing block 51 is arranged in the embedding groove 21, and the bottom of the right pressing block 51 is fixedly connected with the upper end of the right connecting rod 52, and the upper and lower ends of the right spring 53 respectively act on the bottom of the right pressing block 51 and the lower groove wall of the embedding groove 21, the right hand-held block 54 is arranged below the aluminum profile seat 2, and the top of the right hand-held block 54 is fixedly connected with the lower end of the right connecting rod 52; as shown in fig. 1 and 2, the aluminum profile base 2 is embedded in the installation groove 11, the positioning screws 6 are arranged side by side in the embedding groove 21, the positioning screws 6 are screwed on the front wall of the wood table board 1 after penetrating through the aluminum profile base 2, the aluminum profile decorative cover 3 is covered on the front wall of the wood table board 1 and the front wall of the aluminum profile base 2, the upper convex strip portion 31 and the lower convex strip portion 32 are embedded in the embedding groove 21, the limit convex strip 33 is embedded in the upper limit groove 22, and the left inclined plane 411 and the right inclined plane 511 are pressed against the chute bottom plane 341. Through the interact of left inclined plane 411 and chute basal plane 341, can make the lower extreme rear side of aluminium alloy dress trim cover 3 remove to just can make the lower extreme of aluminium alloy dress trim cover 3 sticis on the front surface of aluminium alloy seat 2, help improving the reliability of aluminium alloy dress trim cover 3 installation, location like this, thereby help improving the reliability of wood table board decoration safe edge structure. Through the interact of right inclined plane 511 and chute basal plane 341, can make the lower extreme rear side of aluminium alloy dress trim cover 3 remove to just can make the lower extreme of aluminium alloy dress trim cover 3 sticis on the front surface of aluminium alloy seat 2, help improving the reliability of aluminium alloy dress trim cover 3 installation, location like this, thereby help improving the reliability of wood table board decoration safe edge structure. Through offering out mounting groove 11 on the antetheca of wood table board 1 to make aluminium alloy seat 2 inlay and put in mounting groove 11, can play certain hidden effect to aluminium alloy seat 2 like this, thereby can avoid it to influence the aesthetic property of wood table board decoration safe edge structure. The upper limiting groove 22 is formed in the upper groove wall of the embedding groove 21, and the limiting convex strip 33 is embedded in the upper limiting groove 22, so that the upper part of the aluminum profile decorating cover 3 can be well limited; through the arrangement of the chute bottom plane 341, the left inclined plane 411 and the right inclined plane 511 are tightly pressed on the chute bottom plane 341, so that the lower part of the aluminum profile decorative cover 3 can be well limited; the aluminum section decorative cover 3 can not fall off even if the aluminum section decorative cover is collided, and the reliability of the wood table board decorative edge protection structure is improved. Because the wood table board decorative edge protecting structure is provided with the left elastic limiting component 4 and the right elastic limiting component 5, and the aluminum section decorative cover 3 can be positioned through the left jacking block 41 in the left elastic limiting component 4 and the right jacking block 51 in the right elastic limiting component 5; and can make the business turn over constant head tank 34 of left top briquetting 41 through the handheld piece 44 in the left side of pulling on the spacing subassembly 4 of left elasticity, can make the business turn over constant head tank 34 of right top briquetting 51 through the handheld piece 54 in the right side of promotion on the spacing subassembly 5 of right elasticity, just so can play the positioning action to aluminium alloy dress trim cover 3 fast, and can make aluminium alloy dress trim cover 3 lose the positioning action fast, thereby just can install or dismantle aluminium alloy dress trim cover 3 fast, and then can improve the installation of aluminium alloy dress trim cover 3 greatly, the convenience of change, therefore, can improve the more new convenience of aluminium alloy dress trim cover 3 like this. Because, this wood table board is decorated safe edge structure need not use glue completely, consequently, this wood table board is decorated safe edge structure ten minutes's environmental protection.

As shown in fig. 1 and 5, a lower limiting groove 25 is formed on a lower groove wall of the embedding groove 21, the lower limiting groove 25 extends along the length direction of the aluminum profile seat 2, and the lower limiting groove 25 extends to end faces at two ends of the aluminum profile seat 2; the left through hole 23 and the right through hole 24 are both formed at the bottom of the lower limit groove 25, and the lower end of the left spring 43 and the lower end of the right spring 53 are both arranged in the lower limit groove 25 in a penetrating manner. Through the establishment of lower spacing groove 25, can play certain limiting displacement to left spring 43, right spring 53 to help improving the reliability of wood table board decoration safe edge structure.

Because the aluminum profile seat 2 adopts the aluminum profile structure, in the forming process, the structures such as the embedding groove 21, the upper limiting groove 22, the lower limiting groove 25 and the like can be formed together, and after the aluminum profile seat 2 is formed, the needed aluminum profile seat 2 can be obtained by cutting, forming the left through hole 23, forming the right through hole 24 and providing the hole for the positioning screw 6 to penetrate through.

As shown in fig. 7, a reinforcing strip 321 is provided on the top surface of the lower ridge portion 32, the reinforcing strip 321 is in contact with the rear surface of the aluminum profile decorative cover 3, and the longitudinal direction of the reinforcing strip 321 is in the same direction as the longitudinal direction of the lower ridge portion 32. The provision of the reinforcing bar 321 contributes to further improving the structural strength of the lower convex portion 32, thereby contributing to improvement in the reliability of the wood desk board decorative safe edge structure.

Because the aluminum profile decorative cover 3 adopts the aluminum profile structure, in the forming process, the structures such as the upper convex strip portion 31, the lower convex strip portion 32, the limiting convex strip 33, the positioning groove 34, the chute bottom plane 341, the reinforcing strip 321 and the like can be formed together, and the required aluminum profile decorative cover 3 can be quickly obtained by cutting after the forming is finished. Thus, the aluminum section decorative cover 3 can be produced conveniently and rapidly during mass production.

The upper end and the lower end of the left connecting rod 42 are respectively connected with the left jacking block 41 and the left holding block 44 in a welding mode; during installation, the left pressing block 41 and the left connecting rod 42 are welded together, and then the left connecting rod 42 passes through the left spring 43 and the left through hole 23 and then is welded with the left holding block 44.

As shown in fig. 8, a left insertion hole 441 is formed on the left hand-held block 44; through the opening of the left penetrating hole 441, the left hand-held block 44 can be conveniently pulled by a hooking tool, so that the operation convenience of the left elastic limiting assembly 4 is improved.

The upper end and the lower end of the right connecting rod 52 are respectively connected with the right jacking block 51 and the right hand-held block 54 in a welding way; when the device is installed, the right jacking block 51 and the right connecting rod 52 are welded together, and then the right connecting rod 52 passes through the right spring 53 and the right through hole 24 and then is welded with the right hand-held block 54.

As shown in fig. 9, the right hand-held block 54 is provided with a right insertion hole 541; through the opening of the right penetrating hole 541, the right hand-held block 54 can be conveniently pulled by a hooking tool, so that the operation convenience of the right elastic limiting assembly 5 is improved.

As shown in fig. 8, the left elastic limiting assembly 4 further includes a left limiting fixture block 45, and a left slot 451 is formed on a slot wall of the left limiting fixture block 45; the left limiting clamping block 45 is arranged below the aluminum profile seat 2, the left limiting clamping block 45 is clamped on the left connecting rod 42 through the left clamping groove 451, the left hand-held block 44 is tightly pressed on the bottom surface of the left limiting clamping block 45, the left spring 43 is compressed at the moment, and when the lower convex strip portion 32 is embedded in the embedding groove 21, the left top pressing block 41 cannot be in contact with the lower convex strip portion. As shown in fig. 9, the right elastic limiting component 5 further includes a right limiting fixture block 55, and a right slot 551 is formed on a slot wall of the right limiting fixture block 55; the right limit fixture block 55 is arranged below the aluminum profile seat 2, the right limit fixture block 55 is clamped on the right connecting rod 52 through the right clamping groove 551, the right hand-held block 54 is tightly pressed on the bottom surface of the right limit fixture block 55, the right spring 53 is compressed at the moment, and when the lower convex strip portion 32 is embedded in the embedding groove 21, the right top press block 51 can not be contacted with the lower convex strip portion. Through the structural design, the left limiting fixture block 45 can be clamped on the left connecting rod 42 and the right limiting fixture block 55 can be clamped on the right connecting rod 52 before the aluminum section decorative cover 3 is installed; after the upper convex strip portion 31 and the lower convex strip portion 32 are embedded in the embedding groove 21 and the limiting convex strip 33 is embedded in the upper limiting groove 22, the left inclined plane 411 and the right inclined plane 511 are pressed on the chute bottom plane 341 by moving out the left limiting fixture block 45 and the right limiting fixture block 55; this contributes to improvement in convenience in mounting the aluminum profile trim cover 3. The left limiting fixture block 45 and the right limiting fixture block 55 both belong to installation auxiliary tools, and only when the left limiting fixture block 45 and the right limiting fixture block 55 are installed or disassembled, the left limiting fixture block 45 and the right limiting fixture block 55 are used.

As shown in fig. 1, the upper portions of the left pressing block 41 and the right pressing block 51 are embedded in the positioning groove 34.

And plastic covers are covered on the end parts of the two ends of the aluminum section seat 2 and are covered on the two ends of the aluminum section decorative cover 3. Wherein the plastic cap has an embedding part on the inside thereof, which is positioned by embedding the embedding part in the embedding groove 21.

Claims

1. The utility model provides a safe edge structure is decorated to wood table board which characterized in that: the wood table comprises a wood table plate (1), an aluminum section seat (2), an aluminum section decorative cover (3), a left elastic limiting component (4), a right elastic limiting component (5) and a plurality of positioning screws (6), wherein a mounting groove (11) is formed in the lower edge of the front wall of the wood table plate (1), and the mounting groove (11) extends to the end faces of two ends of the wood table plate (1); the aluminum profile seat (2) is of a rod-shaped structure with a rectangular cross section, the front surface of the aluminum profile seat (2) is provided with an embedding groove (21), the embedding groove (21) extends along the length direction of the aluminum section bar seat (2), the embedding groove (21) extends to the end faces of the two ends of the aluminum section bar seat (2), the upper groove wall of the embedding groove (21) is provided with an upper limiting groove (22), the upper limiting groove (22) extends along the length direction of the aluminum section bar seat (2), the upper limiting groove (22) extends to the end faces of the two ends of the aluminum section bar seat (2), the lower groove wall of the embedding groove (21) is respectively provided with a left perforation (23) and a right perforation (24), the left through hole (23) and the right through hole (24) are arranged side by side from left to right, and the left through hole (23) and the right through hole (24) penetrate through the bottom surface of the aluminum profile seat (2); the aluminum profile decorating cover (3) is of a strip structure, an upper convex strip portion (31) and a lower convex strip portion (32) which are arranged up and down are arranged on the rear surface of the aluminum profile decorating cover (3), the length direction of the upper convex strip portion (31) and the length direction of the lower convex strip portion (32) are in the same direction as the length direction of the aluminum profile decorating cover (3), a limiting convex strip (33) is arranged on the top surface of the upper convex strip portion (31), the length direction of the limiting convex strip (33) is in the same direction as the length direction of the upper convex strip portion (31), a positioning groove (34) is formed in the bottom surface of the lower convex strip portion (32), the positioning groove (34) extends along the length direction of the lower convex strip portion (32), the positioning groove (34) extends to the end faces of the two ends of the lower convex strip portion (32), a chute bottom plane (341) is arranged at the bottom of the positioning groove (34), one end, close to the aluminum profile decorating cover (3), of the chute bottom plane ( One end of the material decorative cover (3); the left elastic limiting assembly (4) comprises a left top pressing block (41), a left connecting rod (42), a left spring (43) and a left holding block (44), wherein a left inclined plane (411) is arranged on the top surface of the left top pressing block (41), and the front edge of the left inclined plane (411) is higher than the rear edge of the left inclined plane (411); the middle part of the left connecting rod (42) is movably arranged in the left through hole (23) in a penetrating mode, the left spring (43) is arranged in the embedding groove (21), the left spring (43) is sleeved on the left connecting rod (42), the left top pressing block (41) is arranged in the embedding groove (21), the bottom of the left top pressing block (41) is fixedly connected with the upper end of the left connecting rod (42), the upper end and the lower end of the left spring (43) are respectively and elastically acted on the bottom of the left top pressing block (41) and the lower groove wall of the embedding groove (21), the left hand-held block (44) is arranged below the aluminum profile seat (2), and the top of the left hand-held block (44) is fixedly connected with the lower end of the left connecting rod (42); the right elastic limiting component (5) comprises a right top pressing block (51), a right connecting rod (52), a right spring (53) and a right hand-held block (54), wherein a right inclined plane (511) is arranged on the top surface of the right top pressing block (51), and the front edge of the right inclined plane (511) is higher than the rear edge of the right inclined plane (511); the middle part of the right connecting rod (52) is movably arranged in the right through hole (24), the right spring (53) is arranged in the embedding groove (21), the right spring (53) is sleeved on the right connecting rod (52), the right top pressing block (51) is arranged in the embedding groove (21), the bottom of the right top pressing block (51) is fixedly connected with the upper end of the right connecting rod (52), the upper end and the lower end of the right spring (53) respectively and elastically act on the bottom of the right top pressing block (51) and the lower groove wall of the embedding groove (21), the right hand-held block (54) is arranged below the aluminum profile seat (2), and the top of the right hand-held block (54) is fixedly connected with the lower end of the right connecting rod (52); the aluminum profile base (2) is embedded in the installation groove (11), the positioning screws (6) are arranged in the embedding groove (21) side by side, the positioning screws (6) penetrate through the aluminum profile base (2) and then are screwed on the front wall of the wood desk plate (1), the aluminum profile decorative cover (3) covers the front wall of the wood desk plate (1) and the front wall of the aluminum profile base (2), the upper convex strip portion (31) and the lower convex strip portion (32) are embedded in the embedding groove (21), the limiting convex strip (33) is embedded in the upper limiting groove (22), and the left inclined plane (411) and the right inclined plane (511) are pressed on the inclined groove bottom plane (341).