阅读说明：本技术 脲醛树脂发泡保温饰面板连接结构及其施工方法 (Urea-formaldehyde resin foaming heat-preservation veneer connecting structure and construction method thereof ) 是由 潘长根 丁伯生 董善勤 秦鼎 刘猛 于 2020-06-29 设计创作，主要内容包括：本发明涉及一种脲醛树脂发泡保温饰面板连接结构及其施工方法,应用于饰面板安装技术领域,解决了饰面板在安装的过程中容易受损的问题,其包括沿饰面板周缘方向设置的边框,所述边框朝向墙体的一侧设有加强板,所述墙体上设有安装槽,所述安装槽中设有连接块,所述连接块背离安装槽底壁的一侧设有延伸出安装槽的连接座,所述加强板安装在连接座上。本发明通过连接块和连接座便于操作者快速便捷的将饰面板安装到墙体上,并且可以增加饰面板与墙体连接的牢固性,以减少饰面板在安装的过程中出现开裂的可能,提高了饰面板与墙体连接的牢固性,同时可以增加相邻的两个饰面板的贴合度,以提升外饰面外墙的美观度。(The invention relates to a urea-formaldehyde resin foaming heat-preservation veneer connecting structure and a construction method thereof, which are applied to the technical field of veneer installation and solve the problem that a veneer is easy to damage in the installation process. According to the invention, the veneer is conveniently and rapidly installed on the wall body by an operator through the connecting block and the connecting seat, the firmness of the connection between the veneer and the wall body can be increased, the possibility of cracking of the veneer in the installation process is reduced, the firmness of the connection between the veneer and the wall body is improved, and meanwhile, the fitting degree of two adjacent veneers can be increased, so that the attractiveness of the exterior wall of the exterior veneer is improved.)

1. The utility model provides a urea-formaldehyde resin foaming heat preservation decorative board connection structure which characterized in that: including frame (3) that sets up along decorative board (2) peripheral direction, frame (3) are equipped with reinforcing plate (43) towards one side of wall body (1), be equipped with mounting groove (4) on wall body (1), be equipped with connecting block (41) in mounting groove (4), one side that connecting block (41) deviate from mounting groove (4) diapire is equipped with connecting seat (42) that extend mounting groove (4), install on connecting seat (42) reinforcing plate (43).

2. The urea-formaldehyde resin foaming thermal insulation veneer connecting structure according to claim 1, characterized in that: a pair of notches (31) is formed in two adjacent side plates of the frame (3) which are away from the veneer (2), the same pair of notches (31) is formed in two sides of the side plates in the length direction, and a pair of extending edges (32) extends from the other two adjacent side plates;

when the two decorative panels (2) are attached to each other, the extending edge (32) on one frame (3) is embedded into the notch (31) of the other frame (3).

3. The urea-formaldehyde resin foaming thermal insulation veneer connecting structure according to claim 2, characterized in that: the same pair of the side walls of the notches (31) deviating from each other are provided with a clamping groove (33), the clamping groove (33) is formed in the length direction of the notches (31), and the opposite side of the extending edge (32) is provided with a clamping strip (34) which is the same as the clamping groove (33) in size.

4. The urea-formaldehyde resin foaming thermal insulation veneer connecting structure according to claim 3, characterized in that: and a rubber pad (35) is arranged between the two extending edges (32) of the frame (3), and the rubber pad (35) is attached to the side plate of the frame (3).

5. The urea-formaldehyde resin foaming thermal insulation veneer connecting structure according to claim 2, characterized in that: connecting seat (42) include fixed block (421) and regulating block (422), regulating block (422) articulate on fixed block (421) through articulated ball (423), fixed block (421) fixed connection is on connecting block (41), reinforcing plate (43) are connected on regulating block (422).

6. The urea-formaldehyde resin foaming thermal insulation veneer connecting structure according to claim 5, characterized in that: spacing groove (45) have been seted up along vertical direction in one side that regulating block (422) deviate from fixed block (421), reinforcing plate (43) are equipped with spacing strip (46) with spacing groove (45) matched with along vertical direction, spacing strip (46) sliding connection is in spacing groove (45).

7. The urea-formaldehyde resin foaming thermal insulation veneer connecting structure according to claim 6, characterized in that: the two ends of the reinforcing plate (43) in the vertical direction are respectively hung with a tension spring (44), one end, far away from the reinforcing plate (43), of each tension spring (44) is hung on the adjusting block (422), and in a normal state, each tension spring (44) is in a partial stretching state.

8. The urea-formaldehyde resin foaming thermal insulation veneer connecting structure according to claim 1, characterized in that: connecting block (41) sliding connection is in mounting groove (4), a plurality of recess (411) have been seted up towards one side of mounting groove (4) lateral wall in connecting block (41) along length direction, swivelling joint has in recess (411) and mounting groove (4) lateral wall inconsistent gyro wheel (412).

9. A construction method for applying the connection structure of the urea resin foaming thermal insulation veneer as claimed in the above claims 1-8, comprising the following steps:

the method comprises the following steps: embedding the veneer (2) into the frame (3);

step two: connecting the connecting seat (42) with the frame (3);

step three: fixedly connecting the connecting seat (42) to the connecting block (41);

step four: the connecting block (41) is embedded into the mounting groove (4).

Technical Field

The invention relates to the technical field of veneer installation, in particular to a urea resin foaming heat-preservation veneer connecting structure and a construction method thereof.

Background

At present, the veneer decoration is a key area for the decoration of the outer wall of a building, the veneer can protect the wall body, the firmness and the durability of the wall body are enhanced, and the service life of the wall body is prolonged.

Chinese patent with publication number CN207110332U discloses a combined pendant for detachable dry-hanging stone or ceramic tile, which comprises a flat-tooth expansion bolt fastening component and a flat-tooth rotary fastening component, wherein one end of the flat-tooth expansion bolt fastening component adopts an expansion bolt form and a base body (wall body) fixed connection, the other end of the flat-tooth expansion bolt fastening component is connected with the flat-tooth rotary fastening component through a flat-tooth lap joint and buckle combination form, the flat-tooth rotary fastening component adopts a thread form and is fixedly connected with the stone or ceramic tile, and the back of the stone or ceramic tile is provided with an internal thread counter bore.

The above prior art solutions have the following drawbacks: the exterior finish outer wall adopts the ceramic tile as the decorative board usually, and above-mentioned scheme need process out the internal thread counter bore at the ceramic tile back earlier when being connected to the wall body, because ceramic tile self hardness is higher to the position that is equipped with the internal thread counter bore is comparatively weak, therefore the ceramic tile is at the in-process of installation, causes internal thread counter bore department to produce the crack easily, influences the structural strength that the ceramic tile is connected.

Disclosure of Invention

Aiming at the defects in the prior art, one of the purposes of the invention is to provide a connection structure of a urea resin foaming heat-preservation veneer and a construction method thereof, and the connection structure has the following effects: the operator is convenient for install the decorative board on the wall body through connecting block and connecting seat fast convenient to can increase decorative board and wall connection's fastness, with reduce the possibility that the fracture appears at the in-process of installation in the decorative board, improve decorative board and wall connection's fastness, can increase the laminating degree of two adjacent decorative boards simultaneously, with the pleasing to the eye degree that promotes the exterior finish outer wall.

The above object of the present invention is achieved by the following technical solutions:

the utility model provides a urea-formaldehyde resin foaming heat preservation decorative board connection structure, includes the frame that sets up along decorative board circumferencial direction, one side that the frame was equipped with the reinforcing plate towards the wall body, be equipped with the mounting groove on the wall body, be equipped with the connecting block in the mounting groove, one side that the connecting block deviates from the mounting groove diapire is equipped with the connecting seat that extends the mounting groove, the reinforcing plate is installed on the connecting seat.

By adopting the technical scheme, an operator firstly fixedly connects the mounting groove on the wall body in the process of mounting the veneer, then the operator inserts the connecting block into the mounting groove, the operator pushes the veneer at the moment, the veneer drives the connecting block to slide along the length direction of the mounting groove through the connecting seat, the mounting groove limits the moving direction of the connecting block so as to increase the stability of the veneer when moving until the veneer is moved to a proper position, and in the moving process of the veneer, the frame can protect the edge of the veneer so as to increase the stability of the veneer and reduce the possibility of collision damage of the veneer, meanwhile, the connecting block and the connecting seat are convenient for the operator to rapidly and conveniently mount the veneer on the wall body, further the firmness of connection between the veneer and the wall body is increased, so as to reduce the possibility of cracking of the veneer in the mounting process, the firmness of the connection of the veneer and the wall is improved, the two adjacent veneers are closely attached, and the attractiveness of the exterior wall of the exterior veneer can be improved.

The present invention in a preferred example may be further configured to: the frame is provided with a pair of notches on two adjacent side plates which are away from the veneer, the same pair of notches are arranged on two sides of the side plates along the length direction, and a pair of extending edges extend from the other two adjacent side plates; when the two decorative panels are jointed, the extended edge on one frame is embedded into the gap of the other frame.

By adopting the technical scheme, after an operator installs one layer of veneer, the operator installs a second layer of veneer, at the moment, a pair of edges in the horizontal direction on the second layer of frame are matched with a pair of notches in the horizontal direction on the first layer of frame, the inner walls of the extending edges are attached to the side walls of the notches, then the operator pushes the veneer to move, the notch limits the moving direction of the extending edge, thereby the notch and the extending edge play a role in guiding the veneer on the second layer, thereby increasing the stability of the veneer when moving, when two veneers on the same layer are jointed, the notches of the two frames in the vertical direction are matched with the extending edge, so as to increase the fit degree between the two decorative panels, and the extending edge and the gap increase the contact area between the two frames, thereby improving the sealing performance between the two veneer panels to reduce the possibility of water seepage between the two veneer panels.

The present invention in a preferred example may be further configured to: the same pair of the side walls of the gaps, which deviate from each other, are provided with a clamping groove, the clamping grooves are arranged along the length direction of the gaps, and the same pair of the opposite sides of the extending edges are provided with clamping strips with the same size as the clamping grooves.

Through adopting above-mentioned technical scheme, when the limit that prolongs on two adjacent frames matches with the breach, the card strip is embedded into the draw-in groove, and card strip protrusion is on the surface of prolonging the limit, the draw-in groove can carry on spacingly to the card strip this moment, thereby increase the joint strength of two adjacent frames, and then increase the firm in connection of two adjacent decorative boards, and increased and prolonged limit and breach complex stability, take place with the condition that the reduction was prolonged the limit and is broken away from the breach, the leakproofness between two decorative boards has further been promoted.

The present invention in a preferred example may be further configured to: the rubber pads are arranged between the same pair of extending edges of the frame and attached to the side plates of the frame.

Through adopting above-mentioned technical scheme, the operator is when promoting the decorative board and removing, the rubber pad can increase the compliance between two frames, in order to eliminate the abnormal sound that two frames friction each other produced, when two decorative boards on the same layer are inconsistent, the rubber pad can cushion the energy-absorbing to the decorative board, in order to reduce the decorative board because of striking the too big impaired possibility that appears of dynamics, the gap between two adjacent frames can be filled up to the rubber pad simultaneously, thereby the leakproofness between two adjacent decorative boards has further been increased, in order to reduce the possibility that the infiltration appears between two adjacent decorative boards.

The present invention in a preferred example may be further configured to: the connecting seat comprises a fixed block and an adjusting block, the adjusting block is hinged to the fixed block through a hinge ball, the fixed block is fixedly connected to the connecting block, and the reinforcing plate is connected to the adjusting block.

Through adopting above-mentioned technical scheme, after the operator imbeds the connecting block in the installation, the operator can be through adjusting the decorative board with the breach with prolong the limit and align, the operator is at the in-process of adjustment decorative board, the decorative board passes through the regulating block and drives the hinge ball and rotate on the fixed block to increase the flexibility of decorative board self, and then be convenient for the operator fast convenient with the breach with prolong the limit and cooperate.

The present invention in a preferred example may be further configured to: the limiting groove has been seted up along vertical direction to one side that the regulating block deviates from the fixed block, the reinforcing plate is equipped with along vertical direction with limiting groove matched with spacing, spacing sliding connection is in the limiting groove.

Through adopting above-mentioned technical scheme, the operator with at the in-process of adjusting the decorative board, the operator can carry out the regulation of vertical direction to the decorative board, the decorative board moves the decorative board through the reinforcing plate and does the removal of vertical direction this moment, the spacing groove carries on spacingly and direction to the decorative board through spacing to reach the effect of diversified regulation decorative board, thereby further increase the flexibility ratio of decorative board, so that the operator adjusts the decorative board.

The present invention in a preferred example may be further configured to: the reinforcing plate has all been articulated at the both ends along vertical direction and has been had a extension spring, the extension spring is kept away from the one end of reinforcing plate and is articulated on the regulating block, and during the normality, the extension spring is in partial tensile state.

Through adopting above-mentioned technical scheme, the operator is at the in-process of installation decorative board, and the decorative board produces easily and rocks, and the decorative board is tensile motion to the extension spring this moment, and the extension spring is stretched and is had elastic shrinkage power to the extension spring is under the effect of elastic shrinkage power, and the extension spring cushions energy-absorbing and slow release energy to the decorative board, thereby the extension spring has played the absorbing effect of buffering to the decorative board, and then increases the stability of decorative board, with the impaired possibility of vibrations appear in the reduction decorative board.

The present invention in a preferred example may be further configured to: connecting block sliding connection is in the mounting groove, a plurality of recess has been seted up along length direction to one side of mounting groove lateral wall to the connecting block, it is connected with the gyro wheel inconsistent with the mounting groove lateral wall to rotate in the recess.

Through adopting above-mentioned technical scheme, the operator is promoting the in-process that the decorative board removed, the connecting block drives the gyro wheel and slides along the length direction of mounting groove, the lateral wall and the gyro wheel of mounting groove produce the friction this moment, make the gyro wheel roll on the connecting block, the gyro wheel can convert the friction between connecting block and the mounting groove into rolling friction when rolling, thereby the gyro wheel has reduced the frictional force between connecting block and the mounting groove, and then be convenient for quick convenient removal decorative board of operator, in order to save operator's labour.

The second aim of the invention is realized by the following technical scheme: the method comprises the following steps: embedding the veneer into the frame; step two: connecting the connecting seat with the frame; step three: fixedly connecting the connecting seat to the connecting block; step four: and embedding the connecting block into the mounting groove.

Through adopting above-mentioned technical scheme, the operator fixes the decorative board in the frame earlier, then the operator passes through the reinforcing plate and connects the frame on the connecting seat, then the operator is connected connecting seat and connecting block, at last with the connecting block embedding mounting groove, the mounting groove is spacing to the connecting block this moment, in order to reach the effect of being connected the decorative board to on the wall body, simultaneously the operator promotes the length direction removal of decorative board along the mounting groove, laminate until two decorative boards, thereby be convenient for the operator install the decorative board fast convenient, and then increase decorative board and wall connection's fastness, in order to reduce the decorative board impaired possibility of appearing in the installation.

In summary, the invention includes at least one of the following beneficial technical effects:

1. the veneer is convenient for an operator to install on a wall body quickly and conveniently through the connecting block and the connecting seat, the firmness of the connection between the veneer and the wall body can be improved, the possibility of cracking of the veneer in the installation process is reduced, the firmness of the connection between the veneer and the wall body is improved, and meanwhile, the fitting degree of two adjacent veneers can be increased, so that the attractiveness of an exterior veneer outer wall is improved;

2. the veneer is guided by the notch and the extending edge, so that the stability of the veneer during movement can be improved, the fit degree between the two veneers can be increased, the contact area between the two frames is increased, the sealing property between the two veneers is improved, and the possibility of water seepage between the two veneers is reduced;

3. the hinge ball is driven to rotate on the fixing block through the adjusting block, so that the flexibility of the veneer can be improved, and an operator can rapidly and conveniently match the notch with the extending edge.

Drawings

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

Fig. 2 is a schematic structural diagram of the connecting socket according to the embodiment.

Fig. 3 is a schematic structural diagram for embodying an extended edge in the present embodiment.

In the figure, 1, a wall body; 2. a veneer; 3. a frame; 31. a notch; 32. edge extension; 33. a card slot; 34. clamping the strip; 35. a rubber pad; 4. mounting grooves; 41. connecting blocks; 411. a groove; 412. a roller; 42. a connecting seat; 421. a fixed block; 422. an adjusting block; 423. hinging the ball; 43. a reinforcing plate; 44. a tension spring; 45. a limiting groove; 46. and (5) a limiting strip.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 and 2, the connection structure of the urea resin foaming thermal insulation veneer and the construction method thereof disclosed by the invention comprises an installation groove 4, wherein the installation groove 4 is fixedly connected to a wall body 1 through an expansion bolt, and a connection block 41 is slidably connected in the installation groove 4. Connecting block 41 deviates from one side fixedly connected with of wall body 1 and extends the connecting seat 42 of mounting groove 4, connecting seat 42 includes fixed block 421 of fixed connection on connecting block 41, the one end that connecting block 41 was kept away from to fixed block 421 articulates through articulated ball 423 has regulating block 422, the one end that fixed block 421 was kept away from to regulating block 422 is equipped with reinforcing plate 43, one side fixedly connected with that reinforcing plate 43 deviates from regulating block 422 is used for fixed decorative board 2's frame 3, decorative board 2 inlays in frame 3.

Referring to fig. 1 and 2, during the process of installing the veneer 2, an operator first inserts the veneer 2 into the frame 3. Then the operator inserts the connecting block 41 into the mounting groove 4, and the mounting groove 4 limits the connecting seat 42 through the connecting block 41, so as to achieve the effect of connecting the veneer 2 to the wall 1. Then the operator promotes decorative board 2, and decorative board 2 passes through reinforcing plate 43 and connecting seat 42 and drives connecting block 41 and slide in mounting groove 4 to mounting groove 4 restricts connecting block 41's moving direction, makes decorative board 2 be linear motion, with the stability when increasing decorative board 2 and removing. Simultaneously decorative board 2 is at the in-process that removes, and frame 3 can be consolidated the edge of decorative board 2 to frame 3 has played the guard action to decorative board 2, and then reduces decorative board 2 and appear impaired possibility because of the striking. After the operator finishes the installation of veneer, two adjacent decorative boards 2 are laminated mutually, can promote the whole pleasing to the eye degree of outer veneer outer wall.

Referring to fig. 1 and 2, a set of grooves 411 is respectively opened towards both sides of two opposite side walls of the mounting groove 4 of the connecting block 41, and a plurality of grooves 411 are opened along the length direction of the connecting block 41. The roller 412 is rotatably connected in the groove 411, and the surface of the roller 412 protrudes out of the groove 411 and abuts against the side wall of the mounting groove 4. When an operator pushes the veneer 2 to move, the connecting block 41 drives the roller 412 to slide in the mounting groove 4, and at the moment, the roller 412 generates friction with the side wall of the mounting groove 4, so that the roller 412 rolls. The roller 412 can convert the friction between the connecting block 41 and the side wall of the mounting groove 4 into rolling friction in the rolling process, so that the roller 412 can reduce the friction between the connecting block 41 and the mounting groove 4, thereby increasing the smoothness of the connecting block 41 during sliding, and facilitating the operator to quickly push the veneer 2 to move.

Referring to fig. 1 and 2, the regulating block 422 has been seted up along vertical direction towards the one end of decorative board 2 by spacing groove 45, and spacing groove 45 runs through regulating block 422, and sliding connection has spacing strip 46 in the spacing groove 45, and spacing strip 46 fixed connection is on reinforcing plate 43, and spacing strip 46 sets up along the vertical direction of reinforcing plate 43 to the cross section of spacing strip 46 and spacing groove 45 is the T font. Two ends of the reinforcing plate 43 in the vertical direction are respectively provided with a tension spring 44 in a hanging manner, the other end of each tension spring 44 is connected to the adjusting block 422 in a hanging manner, and in a normal state, the two tension springs 44 are both in a partial stretching state.

Referring to fig. 1 and 2, the operator is at the in-process of installation decorative board 2, and decorative board 2 produces easily and rocks, and decorative board 2 drives spacing 46 and rocks together this moment, and spacing groove 45 restricts spacing 46's moving direction for decorative board 2 is linear motion, stability when in order to increase decorative board 2 and remove. Meanwhile, the veneer 2 continues to stretch the tension spring 44, the tension spring 44 has elastic contraction force when being stretched, and under the action of the elastic contraction force, the tension spring 44 buffers and absorbs energy and slowly releases energy to the veneer 2, so that the tension spring 44 plays a role in buffering and damping the veneer 2, and the stability of the veneer 2 is further improved. Meanwhile, the flexibility of the veneer 2 during connection is increased, so that the situation that the veneer 2 is damaged due to the fact that stress is increased at the joint of the veneer 2 is reduced.

Referring to fig. 1 and 3, a pair of gaps 31 are respectively provided on two side plates which are deviated from the veneer 2 and are intersected with each other on the frame 3, the same pair of gaps 31 are respectively provided along two sides of the length direction of the side plate of the frame 3, a pair of extending edges 32 are respectively extended outwards on the other two intersected side plates, and the size of each gap 31 is the same as that of each extending edge 32. In the process of installing the veneer 2, an operator pushes one veneer 2 to approach the other veneer 2 until the frames 3 on the two veneer 2 are mutually inconsistent. At this time, a pair of extending edges 32 in the vertical direction is embedded into the gap 31 in the vertical direction of the other frame 3, so that the contact area between two adjacent frames 3 is increased, and the extending edges 32 and the gap 31 increase the sealing performance between two adjacent decorative panels 2, thereby reducing the possibility of water seepage between two adjacent decorative panels 2.

Referring to fig. 1 and 3, after the operator completes the installation of the first veneer 2, the operator performs the installation of the second veneer 2. Then, the operator matches the extending edge 32 in the horizontal direction on the second layer of frame 3 with the notch 31 in the horizontal direction on the first layer of frame 3, and the side wall of the notch 31 is abutted against the inner wall of the extending edge 32. Then the operator promotes decorative board 2 and slides, and breach 31 and continuation limit 32 restrict decorative board 2's moving direction this moment to play the effect of direction to decorative board 2, and then stability when increasing decorative board 2 and removing. Meanwhile, the adjusting block 422 (shown in fig. 2) is movably connected with the fixing block 421, so that the flexibility of the veneer 2 can be increased, and the operator can adjust the veneer 2 conveniently, so that the operator can insert the extending edge 32 into the notch 31 quickly.

Referring to fig. 1 and 3, the same pair of two notches 31 are provided with a clamping groove 33 along the length direction on the side wall deviating from, the same pair of two extending edges 32 are provided with a clamping strip 34 on the opposite side, and the longitudinal sections of the clamping strip 34 and the clamping groove 33 are semicircular. The operator cooperatees the draw-in groove 33 of the card strip 34 of horizontal direction on the second floor with the first floor horizontal direction earlier, when the operator promoted two decorative board 2 of the same layer inconsistent, make card strip 34 on the vertical direction imbed in the draw-in groove 33 of another vertical direction, draw-in groove 33 was spacing to extending limit 32 through card strip 34 this moment, thereby increase and extend limit 32 and breach 31 complex fastness, and then increased the stability of connecting between two adjacent decorative board 2. Meanwhile, the clamping strips 34 and the clamping grooves 33 increase the contact area of the extending edges 32 and the notches 31 so as to increase the sealing performance between two adjacent veneer sheets 2.

Referring to fig. 1 and 3, the rubber pad 35 is adhered to the side plate of the frame 3 between the pair of extending edges 32, and the rubber pad 35 is made of rubber, which is soft and easily deformed. When the operator moves the decorative panel 2 and contradicts with another decorative panel 2, rubber pad 35 can cushion decorative panel 2 to rubber pad 35 has played buffering and absorbing effect to decorative panel 2, appears impaired possibility because of the striking with the reduction decorative panel 2. And the rubber pad 35 can eliminate abnormal noise generated by friction between the two frames 3 in the moving process of the veneer 2. Meanwhile, the rubber pad 35 can fill the gap between the two frames 3, so that the sealing performance between the two decorative panels 2 is further improved, and the possibility of water seepage between the two decorative panels 2 is reduced.

The implementation principle of the embodiment is as follows: the operator imbeds decorative panel 2 in the frame 3 earlier, welds reinforcing plate 43 on frame 3 again, and the operator is connected connecting seat 42 and frame 3 afterwards to with connecting seat 42 fixed connection on connecting block 41, then imbeds connecting block 41 in mounting groove 4. At this moment, the operator pushes the veneer 2 to slide along the length direction of the mounting groove 4 until the veneer 2 is attached to another veneer 2, so as to achieve the effect of connecting the veneer 2 to the wall body 1.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.