CN201343949Y

CN201343949Y - Furniture hinge

Info

Publication number: CN201343949Y
Application number: CNU200920003639XU
Authority: CN
Inventors: 伍志勇
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-01-19
Filing date: 2009-01-19
Publication date: 2009-11-11
Anticipated expiration: 2019-01-19

Abstract

The utility model relates to a furniture hinge, which comprises a base and a hinge cup seat, wherein the base is connected with a furniture main body, the hinge cup seat is articulated with a bearing arm, the base is connected with the bearing arm through an adjusting cover plate, the upper portion of the adjusting cover plate is further equipped with a buffer seat, the hinge cup seat is arranged on a furniture door body, the two sides of an end portion of the adjusting cover plate are connected through a pin shaft, the buffer seat is equipped with a switching button corresponding to the pin shaft, is locked with the pin shaft or the adjusting cover plate, thereby positioning the buffer seat on the direction which is perpendicular to the adjusting cover plate. The two sides of the adjusting cover plate are connected through the pin shaft, thereby greatly increasing the structural stiffness thereof. Furthermore, the buffer seat can be loosed through switching the switching button by fingers without tools through the switching button and the pin shaft. The furniture hinge has simple and reasonable structure, steady connecting, convenient operation, and convenient adjustment.

Description

Hinge for furniture

Technical field

The utility model relates to a kind of hinge for furniture, particularly a kind of American hinge for furniture.

Background technology

Disclose a kind of hinge for furniture among the Chinese patent literature CN101298819 and comprise saddle, described saddle supports the damping tube, and engages first mounting edge of supporting arm from behind.One locking member that is bearing in movably on the saddle has mounting lug outstanding on the side direction, and described mounting lug engages second mounting edge of supporting arm from behind in latched position.Second mounting edge is directed on the contrary mutually with first mounting edge.This rigidity of structure is low, and locking member must be regulated by instrument, installs complicated.

The utility model content

The purpose of this utility model aims to provide a kind of structure hinge for furniture firm, easy for installation, to overcome weak point of the prior art.

A kind of hinge for furniture by this purpose design, comprise base that is connected with the furniture main body and the hinge cup that is hinged with supporting arm, base joins by regulating cover plate and supporting arm, regulate the cover plate top and also be provided with buffing pad, the hinge cup is arranged on the furniture door body, and its architectural feature is to regulate both sides, cover plate one end to link to each other by bearing pin, and the corresponding bearing pin of buffing pad is provided with pulls button, with bearing pin or adjusting cover plate snapping, so that buffing pad is located perpendicular to the direction of regulating cover plate.

Described adjusting cover plate end face is arch, and front end and supporting arm join; The U-shaped axle bed is extended in the two sides, rear end, and pin bearing is connected on the U-shaped axle bed, and the corresponding bearing pin of end face extends postive stop baffle; Perhaps, the contiguous block that is provided with axis hole is extended in the two sides, rear end, and bearing pin is located on the axis hole of two sides; Or middle part, end face rear end or both sides are provided with crimping downward or upward, and bearing pin is arranged in the crimping.

Described buffing pad is square and covers shape, is arranged on to regulate outside the cover plate, and sidepiece or top are provided with the snubber connecting cylinder, and inner top surface is provided with positioning convex point and the adjustable cap plate top surface joins; Pull button and be arranged on the buffing pad rear end, with the bearing pin snapping.

The front limit baffle plate is also extended toward regulating the cover plate direction in described buffing pad rear end, join with bearing pin and/or adjusting cover plate rear end, perhaps, buffing pad upside and/or downside inwall are provided with convex tendon or fluting, regulate the corresponding convex tendon of cover plate upside and/or downside inwall or fluting is provided with fluting or convex tendon is mated, or the buffing pad corresponding bearing pin in both sides up and down is provided with the front and back stopper slot that is the U-shaped of putting upside down, join with bearing pin, the bearing pin two ends extend buffing pad up and down both sides and with its riveted joint; Buffing pad front end upside and/or following side are provided with button piece, buffing pad hook-shaped groove or interior projection, buckle piece, buffing pad hook-shaped groove or interior projection that adjustable cap front edge of board upside and/or following side are provided with breach, projection or cover plate hook-shaped groove and buffing pad join, wherein, Open Side Down or outwards, the opening of cover plate hook-shaped groove makes progress or be outside for the buffing pad hook-shaped groove.

The described button side of pulling is hook-shaped, and the inboard, lower end is provided with fastener, joins with bearing pin, and upper outside is extended spanner, and the inboard is provided with the torsion spring placed cavity, is provided with torsion spring in the torsion spring placed cavity, and both sides are coaxially arranged with first pin-and-hole; Buffing pad rear end correspondence is pulled button and is provided with and pulls the button placed cavity, pulls corresponding first pin-and-hole in button placed cavity both sides and is coaxially arranged with second pin-and-hole, pull button and be arranged on and pull in the button placed cavity, by short pin shaft with to pull the button placed cavity hinged; Torsion spring set is located on the short pin shaft, two ends respectively with the torsion spring placed cavity and pull the button placed cavity against; Wherein, pull the button inboard and also extend interior position-limit foot, placed cavity is spacing joins with pulling button.

The described button of pulling is made by shell fragment, and the inboard, upper end is provided with the connection flange, fixedlys connected with the buffing pad rear end, and the inboard corresponding bearing pin in lower end is provided with fastener, joins with bearing pin, and the fastener end is provided with spanner to turning up.

Be bent with junction plate under the described adjustable cap front edge of board end face, the same direction of junction plate two side direction is provided with flange one time, and an inside punching press of flange is provided with the projection of secondary flange or outer recessed convex, and and junction plate between be formed with left and right sides chute; Supporting arm is slidingly arranged on the chute of the left and right sides, and joins by protruding nail of left and right adjusting and junction plate.

Described adjusting cover plate is by the metal punching moulding, oblique flange or end face that the inside punching press in two sides is formed with the protruding position of outer recessed convex, horizontal flange, oblique adjusting cover plate inner top surface bend towards the corner flange of regulating the cover plate inner top surface, and be formed with the front and back chute respectively and between the adjusting cover plate inner top surface, be slidingly connected with base; The base rear and front end is respectively to being arranged with one or above card base, join with the furniture main body, flanging is extended in both sides, and be slidingly arranged in the chute of front and back, and by regulating protruding nail and regulate cover plate and join in front and back, the end face middle part also is provided with the up-down adjustment slotted hole, and connector passes the up-down adjustment slotted hole fixedlys connected base with the furniture main body, and the corresponding up-down adjustment slotted hole of adjustable cap plate top surface is provided with keeps away a hole.

Described base top surface rear end is provided with diving board, and is provided with perforate below the corresponding diving board, and the edge that diving board one end is relative with perforate joins; Regulate the cover plate slip cap and be connected on the base, the rear end is regulated protruding nail and base or diving board by front and back and is joined, and front end joins by left and right adjusting screw and base.

Described base is by the metal punching moulding, and end face middle part in rear end stamps out diving board by the bottom surface toward end face, and diving board one end is connected with the base one, and other three ends and base top surface are torn, and the below is formed with perforate.

Adjusting cover plate of the present utility model both sides connect by bearing pin, improve its rigidity of structure greatly, and in addition, buffing pad need not be used instrument by pulling button and bearing pin, pulls button by finger and can unclamp.It is simple and reasonable, connection is firm, easy to operate, be convenient to regulate.

Description of drawings

Fig. 1 is the utility model first embodiment decomposition texture schematic diagram.

Fig. 2 assembles the back structural representation for Fig. 1.

Fig. 3 is Fig. 1 master's TV structure schematic diagram.

Fig. 4 is an A-A sectional structure schematic diagram among Fig. 3.

Fig. 5 is a B-B sectional structure schematic diagram among Fig. 3.

Fig. 6 and Fig. 7 are two angle structural representations of buffing pad.

Fig. 8 is for pulling the buckle structure schematic diagram.

Fig. 9 and Figure 10 are for regulating two angle structural representations of cover plate.

Figure 11 is the understructure schematic diagram.

Figure 12 takes out partly cut-away's structural representation behind the buffing pad for Fig. 2.

Figure 13 is the E place structure for amplifying schematic diagram of Figure 12.

Figure 14 is Fig. 1 user mode structural representation.

Figure 15 is the utility model second example structure schematic diagram.

Figure 16 and Figure 17 are respectively buffing pad and adjustable cap plated construction schematic diagram among the utility model the 3rd embodiment.

Figure 18 and Figure 19 are respectively buffing pad and adjustable cap plated construction schematic diagram among the utility model the 4th embodiment.

Figure 20 regulates another embodiment structural representation of cover plate among the 4th embodiment.

Figure 21 is the utility model the 5th example structure schematic diagram.

Figure 22 is an adjustable cap plated construction schematic diagram among the utility model the 6th embodiment.

Figure 23 is an adjustable cap plated construction schematic diagram among the utility model the 7th embodiment.

Figure 24 is this utility model the 8th example structure schematic diagram.

Figure 25 assembles back one cross section structure schematic diagram for Figure 24.

Figure 26 is a base master TV structure schematic diagram among Figure 24.

Figure 27 is a C-C sectional structure schematic diagram among Figure 26.

Figure 28 is a D-D sectional structure schematic diagram among Figure 26.

Figure 29 assembles back user mode structural representation for Figure 24.

Among the figure: 1 is snubber, 2 is buffing pad, 2.1 be the snubber connecting cylinder, 2.2 button piece, 2.3 be positioning convex point, 2.4 be second pin-and-hole, 2.5 for pulling the button placed cavity, 2.6 be the front limit baffle plate, 3 is the buffer adaptation part, 4 for pulling button, 4.1 be fastener, 4.2 be interior position-limit foot, 4.3 be spanner, 4.4 be torsion spring placed cavity 4.4,4.5 be first pin-and-hole, 5 is torsion spring, 6 is short pin shaft, 7 is base, 7.1 be card base, 7.2 be flanging, 7.3 be the up-down adjustment slotted hole, 8 for regulating cover plate, 8.1 be breach, 8.2 be junction plate, 8.3 be protruding position, 8.4 be the U-shaped axle bed, 8.5 be a flange, 8.6 be the secondary flange, 8.7 be postive stop baffle, 8.8 be the front and back chute, 8.9 be left and right sides chute, 9 is bearing pin, 10 is supporting arm, 11 are the hinge cup, 12 is second torsion spring, 13 is the U-shaped pin, 14 is the protruding nail of left and right adjusting, 15 for regulating protruding nail in front and back, 16 is connector, 17 is the furniture main body, 18 is the furniture door body.

The specific embodiment

Below in conjunction with drawings and Examples the utility model is further described.

First embodiment

Referring to Fig. 1-Figure 14, this furniture hinge, comprise the base 7 that is connected with furniture main body 17 and by the hinged hinge cup 11 of U-shaped pin 13 and second torsion spring 12 that is arranged on hinge cup 11 left and right sides and supporting arm 10, base joins with supporting arm by regulating cover plate 8, regulate the cover plate top and also be provided with buffing pad 2, the hinge cup is arranged on the furniture door body 18, regulating cover plate 8 rearward end both sides links to each other by bearing pin 9, buffing pad 2 corresponding bearing pins 9 are provided with pulls button 4, with the bearing pin snapping, so that buffing pad is located perpendicular to the direction of regulating cover plate.

Referring to Fig. 9-Figure 11, regulate cover plate 8 by the metal punching moulding, end face is arch, front end sidepiece up and down is provided with breach 8.1, be bent with junction plate 8.2 under the front end end face, the same direction of junction plate two side direction is provided with flange 8.5 one time, an inside punching press of flange is provided with secondary flange 8.6, and and junction plate between be formed with left and right sides chute 8.9, upper and lower sides also inwardly punching press be formed with the protruding position 8.3 of outer recessed convex, and and regulate be formed with between the cover plate inner top surface before and after chute 8.8, U-shaped axle bed 8.4 is extended in the two sides, rear end, bearing pin 9 is undertaken on the U-shaped axle bed, and the corresponding bearing pin of end face extends postive stop baffle 8.7.Supporting arm 10 is slidingly arranged on the left and right sides chute 8.9, and joins with junction plate 8.2 by the protruding nail 14 of left and right adjusting.The base rear and front end is respectively to being arranged with two card bases 7.1, join with furniture main body 17, flanging 7.2 is extended in both sides, and be slidingly arranged in the chute 8.8 of front and back, and by regulating protruding nail 15 and regulate cover plate 8 and join in front and back, the end face middle part also is provided with up-down adjustment slotted hole 7.3, and connector 16 passes the up-down adjustment slotted hole fixedlys connected base with the furniture main body, and the corresponding up-down adjustment slotted hole of adjusting cover plate 8 end faces is provided with keeps away a hole.Surface, bearing pin 9 one or both ends also is provided with annular knurl, with U-shaped axle bed 8.4 interference fit.

Referring to Fig. 6 and Fig. 7, buffing pad 2 is square and covers shape, is arranged on to regulate outside the cover plate 8, sees Fig. 1, and sidepiece is provided with snubber connecting cylinder 2.1, and inner top surface is provided with positioning convex point 2.3 and joins with adjusting cover plate 8 end faces; Pull button 4 and be arranged on the buffing pad rear end, with bearing pin 9 snappings.The breach 8.1 of sidepiece correspondence adjusting cover plate 8 is provided with and buckles piece 2.2 about buffing pad 2 front ends, and front limit baffle plate 2.6 is also stretched out in the rear end under adjusting cover plate direction is prolonged, and joins with bearing pin and adjusting cover plate rear end.Be provided with snubber 1 in the snubber connecting cylinder 2.1, the corresponding snubber in rear end is provided with buffer adaptation part 3.

Referring to Fig. 8, to pull button 4 sides and be hook-shaped, the inboard, lower end is provided with fastener 4.1, join with bearing pin 9, see Fig. 5, upper outside is extended spanner 4.3, the inboard is provided with torsion spring placed cavity 4.4, is provided with torsion spring 5 in the torsion spring placed cavity, and both sides are coaxially arranged with first pin-and-hole 4.5.Buffing pad rear end correspondence is pulled button and is provided with and pulls button placed cavity 2.5, pulls corresponding first pin-and-hole in button placed cavity both sides and is coaxially arranged with second pin-and-hole 2.4, sees Fig. 7, pull button and be arranged on and pull in the button placed cavity, by short pin shaft 6 with to pull the button placed cavity hinged.Torsion spring 5 is set on the short pin shaft 6, two ends respectively with torsion spring placed cavity 4.4 and pull button placed cavity 2.5 against; Wherein, pull the button inboard also extend in position-limit foot 4.2, placed cavity is spacing joins with pulling button, sees Fig. 5.

Among Figure 14, coordinate F direction be left to, G direction be the place ahead to, the H direction is last direction.

Second embodiment

Referring to Figure 15, the buffing pad 22 rear ends up and down corresponding bearing pin in both sides are provided with the front and back stopper slot 22.1 that is the U-shaped of putting upside down, join with bearing pin 9, the bearing pin two ends extend buffing pad up and down both sides and with its riveted joint.Other does not state part with first embodiment.

The 3rd embodiment

Referring to Figure 16 and Figure 17, buffing pad 32 is square and covers shape, and the upper and lower sides inwall is provided with convex tendon 32.1, and the convex tendon that the corresponding convex tendon of adjusting cover plate upper and lower sides inwall is provided with fluting 28.2 and buffing pad joins, and realizes that front and back are spacing.Buffing pad 32 is arranged on to be regulated outside the cover plate 28, and sidepiece is provided with snubber connecting cylinder 32.6, and inner top surface is provided with positioning convex point 32.2 and regulates cover plate 28 end faces and join, and rear end also correspondence is pulled button and is provided with and pulls button placed cavity 32.5.The breach of sidepiece correspondence adjusting cover plate 28 is provided with and buckles piece 32.3 about buffing pad 2 front ends, and front limit baffle plate 32.4 is also stretched out in the rear end under adjusting cover plate direction is prolonged, and joins with bearing pin and adjusting cover plate rear end.Other does not state part with first embodiment.

The 4th embodiment

Referring to Figure 18 and Figure 19, buffing pad 42 is square and covers shape, and front end is provided with buffing pad hook-shaped groove 42.1 in both sides up and down, and Open Side Down for the buffing pad hook-shaped groove.Sidepiece is provided with projection 38.3 about regulating cover plate 38 front ends, joins with buffing pad hook-shaped groove 42.1, and the contiguous block 38.1 that is provided with axis hole 38.2 is extended in the two sides, rear end, and bearing pin is located on the axis hole of two sides.Perhaps, referring to Figure 20, regulate cover plate 48 front ends and be wholely set supporting arm 48.1, the front end both sides are provided with projection 48.2, and buffing pad front end both sides up and down is provided with the buffing pad hook-shaped groove and projection joins.Regulate cover plate 48 slip caps and be connected on the base, the rear end regulates protruding nail by front and back and base joins, and front end joins by left and right adjusting screw and base.Other does not state part with first embodiment.

The 5th embodiment

Referring to Figure 21, to pull button 24 and make by shell fragment, the inboard, upper end is provided with and connects flange 24.1, fixedlys connected with buffing pad 52 rear ends, and the inboard corresponding bearing pin in lower end is provided with fastener 24.2, joins with bearing pin, and the fastener end is provided with spanner 24.3 to turning up.Other does not state part with first embodiment.

The 6th embodiment

Referring to Figure 22, regulate cover plate 58 by the metal punching moulding, the inside punching press in both sides is formed with end face and bends towards the corner flange 58.1 of regulating the cover plate inner top surface, and and regulate be formed with between the cover plate inner top surface before and after chute 58.2, be slidingly connected with base.Other does not state part with first embodiment.

The 7th embodiment

Referring to Figure 23, regulate cover plate by the metal punching moulding, the inside punching press in both sides is formed with the oblique flange 68.1 of oblique adjusting cover plate inner top surface, and and regulate be formed with between the cover plate inner top surface before and after chute 68.2, be slidingly connected with base.Other does not state part with first embodiment.

The 8th embodiment

Referring to Figure 24-Figure 25, base 27 is by the metal punching moulding, and end face middle part in rear end stamps out diving board 27.1 by the bottom surface toward end face, and diving board front end and both sides and base top surface are torn, and the rear end is connected with the base one, and the below is formed with perforate 27.5.Regulate cover plate 78 slip caps and be connected on the base, the rear end is regulated protruding nail 15 by front and back and is joined with diving board 27.1, and front end joins by left and right adjusting screw 19 and base 27.Base 27 end face both sides also punching press are formed with the projection of up protruding down 27.2 are arranged, and the rear and front end, bottom surface joins with furniture main body 17 respectively to being arranged with two card bases 27.4, and front end is provided with draw-in groove 27.3, with the slip clamping of left and right adjusting screw lower end.Left and right adjusting screw 19 lower ends are provided with dop 19.1, join with draw-in groove 27.3, and the upper end is threaded with adjusting cover plate 78 end faces.Other does not state part with first embodiment.

Claims

1. hinge for furniture, comprise base (7) that is connected with furniture main body (17) and the hinge cup (11) that is hinged with supporting arm (10), base joins with supporting arm by regulating cover plate (8), regulate the cover plate top and also be provided with buffing pad (2), the hinge cup is arranged on the furniture door body (18), it is characterized in that regulating both sides, cover plate one end and links to each other by bearing pin (9), and the corresponding bearing pin of buffing pad is provided with pulls button, with bearing pin or adjusting cover plate snapping, so that buffing pad is located perpendicular to the direction of regulating cover plate.

2. according to the described hinge for furniture of claim 1, it is characterized in that described adjusting cover plate end face is arch, front end and supporting arm join; U-shaped axle bed (8.4) is extended in the two sides, rear end, and pin bearing is connected on the U-shaped axle bed, and the corresponding bearing pin of end face extends postive stop baffle (8.7); Perhaps, the contiguous block (38.1) that is provided with axis hole (38.2) is extended in the two sides, rear end, and bearing pin is located on the axis hole of two sides; Or middle part, end face rear end or both sides are provided with crimping downward or upward, and bearing pin is arranged in the crimping.

3. according to the described hinge for furniture of claim 1, it is characterized in that described buffing pad is square to cover shape, be arranged on and regulate outside the cover plate, sidepiece or top are provided with snubber connecting cylinder (2.1), and inner top surface is provided with positioning convex point (2.3) and joins with the adjustable cap plate top surface; Pull button and be arranged on the buffing pad rear end, with the bearing pin snapping.

4. according to claim 1 or 3 described hinge for furniture, it is characterized in that described buffing pad rear end also extends front limit baffle plate (2.6) toward regulating the cover plate direction, join with bearing pin and/or adjusting cover plate rear end, perhaps, buffing pad upside and/or downside inwall are provided with convex tendon (32.1) or fluting, regulate the corresponding convex tendon of cover plate upside and/or downside inwall or fluting is provided with fluting (28.2) or convex tendon is mated, or, the buffing pad corresponding bearing pin in both sides up and down is provided with the front and back stopper slot (22.1) that is the U-shaped of putting upside down, join with bearing pin, the bearing pin two ends extend buffing pad up and down both sides and with its riveted joint; Buffing pad front end upside and/or following side are provided with button piece (2.2), buffing pad hook-shaped groove (42.1) or interior projection, buckle piece, buffing pad hook-shaped groove or interior projection that adjustable cap front edge of board upside and/or following side are provided with breach (8.1), projection (38.3) or cover plate hook-shaped groove and buffing pad join, wherein, Open Side Down or outwards, the opening of cover plate hook-shaped groove makes progress or be outside for the buffing pad hook-shaped groove.

5. according to claim 1 or 3 described hinge for furniture, it is characterized in that described button (4) side of pulling is hook-shaped, the inboard, lower end is provided with fastener (4.1), join with bearing pin, upper outside is extended spanner (4.3), the inboard is provided with torsion spring placed cavity (4.4), is provided with torsion spring (5) in the torsion spring placed cavity, and both sides are coaxially arranged with first pin-and-hole (4.5); Buffing pad rear end correspondence is pulled button and is provided with and pulls button placed cavity (2.5), pulls corresponding first pin-and-hole in button placed cavity both sides and is coaxially arranged with second pin-and-hole (2.4), pull button and be arranged on and pull in the button placed cavity, by short pin shaft (6) with to pull the button placed cavity hinged; Torsion spring set is located on the short pin shaft, two ends respectively with the torsion spring placed cavity and pull the button placed cavity against; Wherein, pull the button inboard and also extend interior position-limit foot (4.2), placed cavity is spacing joins with pulling button.

6. according to claim 1 or 3 described hinge for furniture, it is characterized in that the described button (24) of pulling made by shell fragment, the inboard, upper end is provided with and connects flange (24.1), fixedly connected with the buffing pad rear end, the inboard corresponding bearing pin in lower end is provided with fastener (24.2), join with bearing pin, the fastener end is provided with spanner (24.3) to turning up.

7. according to claim 1 or 2 described hinge for furniture, it is characterized in that being bent with junction plate (8.2) under the described adjustable cap front edge of board end face, the same direction of junction plate two side direction is provided with a flange (8.5), an inside punching press of flange is provided with the projection of secondary flange (8.6) or outer recessed convex, and and junction plate between be formed with left and right sides chute (8.9); Supporting arm is slidingly arranged on the chute of the left and right sides, and joins by protruding nail of left and right adjusting (14) and junction plate.

8. according to the described hinge for furniture of claim 7, it is characterized in that described adjusting cover plate is by the metal punching moulding, oblique flange (68.1) or end face that the inside punching press in both sides is formed with protruding (8.3), horizontal flange of outer recessed convex, oblique adjusting cover plate inner top surface bend towards the corner flange (58.1) of regulating the cover plate inner top surface, and be formed with front and back chute (8.8), (68.2), (58.2) respectively and between the adjusting cover plate inner top surface, be slidingly connected with base; The base rear and front end is respectively to being arranged with one or above card base (7.1), join with the furniture main body, flanging (7.2) is extended in both sides, and be slidingly arranged in the chute of front and back, and by regulating protruding nail (15) and regulate cover plate and join in front and back, the end face middle part also is provided with up-down adjustment slotted hole (7.3), and connector (16) passes the up-down adjustment slotted hole fixedlys connected base with the furniture main body, and the corresponding up-down adjustment slotted hole of adjustable cap plate top surface is provided with keeps away a hole.

9. according to the described hinge for furniture of claim 1, it is characterized in that described base (27) end face rear end is provided with diving board (27.1), and corresponding diving board below is provided with perforate (27.5), the edge that diving board one end is relative with perforate; Regulate the cover plate slip cap and be connected on the base, the rear end is regulated protruding nail and base or diving board by front and back and is joined, and front end joins by left and right adjusting screw (19) and base.

10. according to the described hinge for furniture of claim 9, it is characterized in that described base by the metal punching moulding, end face middle part in rear end stamps out diving board by the bottom surface toward end face, and diving board one end is connected with the base one, and other three ends and base top surface are torn, and the below is formed with perforate.