CN1043605C - Fastener means - Google Patents

Abstract

The present invention relates to a fastening device utilizing the attraction of permanent magnets, which is the improvement of a negative member of a sliding block attracted by a permanent magnet of a positive member. Particularly, the improvement relates to a first plate and a second plate in which a sliding block can be inserted in a sliding mode. A stopping block and a notch for containing the stopping block are respectively arranged in the first plate and the second plate, and the first plate and the second plate can be firmly welded together when the stopping block is inserted into the notch.

Description

Fastener

The present invention relates to a kind of fastener, be used for various bags and various chest and belt such as satchel and haversack.It also relates to a kind of fastener of door system on wall that will open.

The invention particularly relates to a kind of improvement of fastener, it comprises that one has the male part of permanent magnet, the female part with ferromagnet slide plate, meshes together with male part by magnetic attraction.

According to fastener of the present invention, its characteristics steadily and reliably move to allow described female part slide plate for being provided with a space interval, and when the projection of male part was inserted female part, described slide plate steadily and was reliably inhaled to this projection.The structure of fastener of the present invention is such, has to make slide plate steadily and the female part of the reliable described space interval that slides can be made easily.

The advantage of utilizing the fastener of permanent magnetism suction is that it is easy to use, breaks away from because female part is easy to inhale in male part with it, and can make structure do fairly simplely.Therefore, magnetic fastener means is widely used in various bags, such as handbag, and various satchels of haversack and briefcase, and be widely used in the similar fastening occasion of various chests and belt and other.

Yet this class fastener is imperfect, and when a power that is better than permanent magnetism suction or impact put on male part and the female part, they tended to be easy to break away from.

In order to overcome this shortcoming, a kind of fastener had been proposed already, comprise a ferromagnet female part, it has a hole to admit the projection of male part; One male part, it has a projection, and the convex head diameter is greater than the diameter of shaft; One permanent magnet is in the bottom of described projection.

For this class securing member, when the projection of male part was inserted in the female part hole, female part was attracted by the permanent magnet of male part, thereby realized preliminary engagement between the negative and positive part.By rotating this projection, from the header arrangement of the projection that shaft extends laterally around near the female part hole, with lock female male part securely.

In this securing member,, be cumbersome yet when the male part projection is inserted in the female part, will rotate the male part projection at every turn though realized the secure engagement of negative and positive parts, especially in order to separate two negative and positive parts, except rotating the male part projection, also to spur two negative and positive parts, make it separately.

In view of top said, various improvement had been proposed already, so that a kind of fastener of easy operating to be provided.The fastener that is proposed by Japanese publication number Hei3-14983 is a typical example.

According to this patent, male part be raised with a head that extends laterally, it or make by permanent magnet, or be provided with permanent magnet.Female part has the hole of an admittance male part projection, when the projection of male part is inserted in it, the ferromagnet plate that inserts female part is slidably attracted by this projection, thereby when applying a power male part being pulled out in female part, this ferromagnet plate just locks together with the described bossing that extends laterally.

This fastener is imperfect naturally, and the assembly of fastener is not necessarily easy to assembly, and the outward appearance of this fastener is very not attractive.

The object of the invention is to improve the invention of Japanese publication number Hei3-14983.

Main purpose of the present invention provides a kind of female part that simplifies the structure, and its component count reduces.

Another object of the present invention is that the assembly of female part is accurately assembled, and like this, the slide plate that inserts in the female part just can correctly be finished its function.

A further object of the present invention is the recess that becomes another assembly by being welded in built in the block on the assembly built in when engagement the time, can make female part easily manufactured.

By following narration, these and other purpose of the present invention will become obvious.

Fig. 1 is a decomposition diagram, and expression is according to the assembly of the female part B-1 of first embodiment of the invention.

Fig. 2 is the phantom drawing of female part B-1.

Fig. 3 is an expression block 11 with recess 10 sectional view welded together;

Fig. 4 is the sectional view that expression is welded in side;

Fig. 5 and Fig. 6 are the sectional views of the preliminary engagement of negative and positive part, the state before wherein Fig. 5 table meshes, the state when Fig. 6 then represents to mesh;

Fig. 7 and 8 expressions are in male part A-1 inserts female part B-1 the time, slide plate 5 mobile, and first plate 3 is removed from female part B-1, and wherein Fig. 7 represents the protruding E when male part A-1 is inserting; And Fig. 8 represents the protruding E of male part after insertion.

Fig. 9 represents the sectional view according to the fastener of second embodiment, wherein also not engagement of negative and positive part;

Figure 10 and 11 expressions are according to the view of the female part B-3 of the 3rd embodiment, and wherein Figure 10 represents described assembly with decomposition diagram, and Figure 11 represents female part B-3 with decomposition diagram;

Figure 12 to 15 expression is according to the female part B-4 of the 4th embodiment, and wherein Figure 12 is the decomposition diagram of expression female part B-4, the phantom drawing of Figure 13 one expression female part B4, and Figure 14 and 15 expressions are according to the sectional view of the negative and positive part engagement of the 4th embodiment.

Now, by means of each embodiment, be described in detail male part A and female part B.

Narration is according to male part A-1 that is illustrated in first embodiment among Fig. 1-8 and female part B-1 now.

Male part A-1 has a protruding E, and it comprises the permanent magnet 1 in cylinder 2 and the insertion cylinder 2.

Cylinder 2 has an inner chamber, and it extends to head from the bottom of projection 2a, and projection 2a is rectangle basically in its plan view.The vertical cross-section of its head is an arc, inserts reposefully in the female part B-1 to allow.

The engagement recess 12 that has oral area 9 along the length setting of protruding E.

Be provided with the stage portion 13 that constitutes engagement recess 12 in the bottom of 2a portion, seat 2b is from bottom cycle side direction and whole extension of projection 2a.Side 2c extends downwards around seat 2b.The bottom of the seat 2b that is surrounded by side 2c is provided with navel 2d, as the fastening devices of supporting member 14.

Supporting member 14 comprises supporting slice 14a, and supporting slice 14a is inserted in the seam of pad 15, and makes its bending by inserting the cladding basic material such as certain bag that this fastener will connect, to reach the strong bonded of fastener.Supporting member 14 is made into the recess of present 2b bottom formation suitable, to cover the cavity in the projection 2.Make aperture in supporting member, like this, when supporting member 14 fastening present 2b bottoms, described navel just protrudes in this aperture.Navel 2d is pressing supporting member 14, makes supporting member 14 energy and projection 2 engagements.

Permanent magnet 1 and ferromagnetic plate 16 are contained in the projection 2 that is made into like this.Supporting member 14 also cooperates with the seat 2b of projection 2.Thereby permanent magnetism 1 and ferromagnetic plate 16 are contained in the projection 2 securely, have the male part A-1 of protruding E with formation.Male part A-1 is connected in basic material C then.The supporting slice 14a of A-1 spare is inserted in the basic material C, and pad 15 is contained on the supporting slice 14a.Supporting slice 14a is bent towards basic material, thereby A-1 spare is securely fixed on the basic material C.

Should be noted that described ferromagnetic plate 16 has play a part to attract slide plate 5 effectively, this point illustrates below.Therefore, plate 16 preferably is exposed to the window that is provided with in the protuberance of projection 2.

The described stage portion 13 that is provided with at protuberance 2a has play a part to make protruding E with female part B-1 secure engagement.

The projection of male part A-1 comprises projection 2 and permanent magnet 1.Permanent magnet be by, for example iron is coated with oxygen and makes, and by projection 2 cappings.Perhaps, except the fixture such as supporting member 14, male part A-does as a whole, and available permanent magnet is made such as plastic magnet.

In the case, the magnetic force of male part A will be greater than the magnetic force of the male part A-1 of the foregoing description with equal volume, thereby male part A can also do smallerly.

Also can adopt ferromagnetic material to make the protuberance 2a of the projection 2 that constitutes protruding E.This structure has prevented to constitute the magnetic leakage of the permanent magnet 1 of protruding E.

When window in ferromagnetic plate 16 is located at projection 2 as mentioned above was other, this ferromagnetic plate 16 was used for the capping window covering inner permanent magnet, and the magnetic field of a magnetic pole of convergence magnet 1, and the slide plate 5 of female part B-1 can firmly and stably be absorbed.

Also can only adopt permanent magnet 1 and without ferromagnetic plate 6.The described cavity that is used to hold permanent magnet 1 can be made into the region between the heart and the diaphragm hole, and window is not set.

At the configurable ferromagnetic plate in each magnetic sheet place of permanent magnet 1.The ferromagnetic plate at these magnetic pole places can extend to the side of permanent magnet.This has just prevented the leakage of magnetic flux.But these magnetic poles of permanent magnet 1 are with respect to Fig. 5 arranged perpendicular.

The structure of the engagement recess 12 that is provided with on protruding E can be such, and when slide plate 5 during by the attracted by surfaces of protruding E below oral area 9, the upper surface of the slide plate 5 of its female part B-1 can be near the oral area of recess 12.When the slide plate 5 of female part B-1 was inhaled in oral area 9, negative and positive part A and B be engagement securely just.

Although on protruding E, be provided with engagement recess 12, make by the oral area 9 of slide plate 5 side end faces of suction in recess 12, yet in protruding E, also oral area 9 can only be set, and save stage portion 13 near recess 12 upper limbs.

In other words, can protrude, like this upper surface of slide plate 5a energy and meshing flake 9a engagement at the meshing flake 9a shown in Fig. 9.

Meshing flake 9a also can be a flange of going up protrusion from protruding E.

Meshing flake 9a can also make a pin or go up the little projection of protrusion from protruding E.

Described supporting member 14 can be made with ferromagnetic material, produces magnetic leakage to prevent permanent magnet 1.Supporting member 14 also can be made with nonmagnetic substance, and in the case, base plate 14a is not as the flux path to the pad 15 that is connected in basic material C from permanent magnet 1.

Female part B-1 is described now.

Male part B-1 comprises a female part framework F, and framework F comprises first plate 3 and the 2nd plate 4, and the slide plate of being made by ferromagnetic material 5, and it is inserted between first and second plates 3,4 of female part framework F.

Here used a kind of like this material of slide plate 5 usefulness is made, and such as the so-called ferromagnetic material with fabulous magnetic conductivity, can be attracted effectively by permanent magnet 1.

First and second plates 3,4 can by various welding methods, can make these plates link together securely with making such as metal that is suitable for welding or plastics.

If first and second plates the 3, the 4th of female part framework F are made with nonmagnetic substance, the protruding E of male part A-1 can easily insert female part B-1, and slide plate 5 can steadily and correctly move.

If these plates 3,4 are made by ferromagnetic material, when female part meshes, can prevent the magnetic leakage that produces by fastener.

When second plate, 4 usefulness ferromagnetic materials were made, cathode frame F can be inhaled on the permanent magnet 1 of male part A-1 securely, no matter first plate 3 is magnetic or nonmagnetic.

First plate 3 is described now.

First plate 3 comprises two relative side plate 3a, and it is to be formed by the bending of the plate at two side places, and described like this slide plate 5 inserts between two opposing sideplates slidably.

Block 11 protrudes upward from the upper limb of biside plate 3a.The block 11 of arbitrary number can be set, depend on female part framework F shape and size.Its width also can be selected arbitrarily.

Generally speaking, block 11 can be made the height identical with second plate, 4 width or short a little, like this, and block 11 recess 10 of can packing into easily.Will be described below.

In addition, be provided with an opening 6 on first plate 3, the protruding E of male part A-1 inserts through this opening.First plate 3 also comprises board 3b and 3d, and they extend to more than the position at 3a place, two sides.The part of board 3b is used for fastener is fixed in basic material D such as suitcase.

Periphery at the opening 6 of board 3c side also is provided with block 3c, in the time of in protruding E inserts opening 6, in order to block the head of protruding E.

Second plate 4 is described now.

Second plate 4 comprises the part 4a corresponding to the board 3b of first plate 3, and this plate 4a extends outside kink 4b.Be provided with recess 10 folding on the board both sides 4c on first plate, the 3 biside plate 3a, to admit each block 11 of first plate 3.At the opposition side of board 4a, respectively establish a meshing flake 17, it is folded into downwards on the surface of plate 3.

The recess 10 that is provided with on second plate 4 preferably has the degree of depth of same thickness substantially with biside plate 3a, and this model 3 has a kind of overall appearance when 4 are connected.

On board 4a, be provided with screw through-hole 18, and be provided with the opening 7 that is communicated with the opening on first plate 36 on the board 4c.Opening 7 has a kind of like this size, and it can admit the bottom of the protruding E of male part A-1 loosely.

The slide plate 5 between first and second plates 3 and 4 is inserted in explanation now.Slide plate 5 also has an opening 8, and it vertically is being wider than opening 6 and 7.Slide plate 5 also comprises the board 5b of the biside plate 3a that adapts to first plate 3 and the lip spare 5a of a slight bending that is used to operate, when first and second plates 3 when 4 are connected, it a little outwards protrudes.Be shaped on groove 19 on the edge that extends between operation lip spare 5a and the board 5b, the meshing flake 17 of plate 4 is placed in respectively in this groove.

Insert the slide plate 5 in the female part framework F, be provided with opening 8 in the side of its lip spare 5a, wide than the opening 6 and 7 of first and second plates 3 and 4 respectively.In slide plate 5 preferably was pressed under the female part framework in this manner, the peripheral 8b of the opening 8 on lip spare 5a opposition side alignd respectively with the hole 6 of first and second plates 3 and 4 and 7 periphery basically.

In order to obtain this position relation of slide plate 5 and female part framework F, described meshing flake 17 and groove 19 must be gone up in position respectively to make in advance and go.

Explanation now comprises the assembling of the female part B-1 of above-mentioned parts.

At first slide plate 5 is placed on the position such between the biside plate 3a of first plate 3, operation lip spare 5a is a little outwards protruded from board 3d place.

Then second plate 4 is placed the top between the biside plate 3a, like this, at block 11 civilian dresses that are provided with on the biside plate 3a in the recess 10 of second plate 4.When doing like this, the meshing flake 17 of plate 4 is positioned in the groove of slide plate 5.

Pack in the recess 10 by means of described block 11, first and second plates 3 and 4 civilian dresses are joined, and it is welded together to press confined state.

Described recess 10 and the block 11 of packing in it can be by being weldingly fixed on together as shown in Figure 3.Perhaps, first plate 3 and second plate 4 also can stably be assembled together by means of the engagement of block 11 and recess 10, by the upper end of the biside plate 3a of first plate 3 being welded together as shown in Figure 4 with the surface of second plate 4 that is in contact with it and finally being fixed together.

Also have a kind of method to be, can be welded in the contact position of first and second plates except above-mentioned.Though two boards is welded in the drawings on its surface that is in contact with one another of representing with blacking, yet can be welded in the side of their contact surfaces, or the side of weldment.In addition, can all weld along its contact portion, and can partly weld, as long as they do not separate.

Here for the fixing welding method that adopts comprises such as melting welding, Pressure Welding, the well-known process of diffusion welding (DW) and braze and such as the typical electrical welding resistance of spot welding, arc-welding and hard solder.

With regard to the negative frame F of said structure, slide plate 5 does not skid off because meshing flake 17 places in the groove 19 of slide plate 5, and just its operation lip spare 5a a little outwards protrudes from framework F; Also be inserted in slidably between first and second plates 3 and 4 owing to slide plate 5.

Opening 7 on the opening 6 on first plate 3 and second plate 4 and be inserted in that the opening 8 of the slide plate 5 in the female part framework F all is interconnected is so that allow the protruding E of male part A-1 freely to insert or shift out. Opening 6 and 7 has a kind of like this size respectively, allows protruding E to pack into.Each opening is all admitted protruding E even as big as no play.

The slide plate 5 that inserts in the female part framework F that slides has an opening 8a in the side of its operation lip spare 5a, along being wider than opening 6 and 7 on the direction of lip spare 5a.In addition, the peripheral 8b at the opening 8 of lip spare 5a opposition side outwards protrudes (referring to Fig. 5) from opening 6 and 7.

The female part B-1 of said structure is connected on the basic material D by means of screw 20, because basic material D is inserted between the 4a portion of the 3b portion of first plate 3 and second plate 4, reaches kink 4b.

A-1 of sun portion and private parts B-1 assemble as illustrated in Figures 5 and 6.

Along with slide plate 5 inside roof pressures, the positive A-1 of portion unclamps from female part B-1, and holds female part B-1 in some way, makes the lip spare 5a of slide plate 5 protruding.

As a result, male part A-1 is with female part B-1 engagement, and the recess that is used to mesh 12 that is provided with on protruding E is the lip spare 5a of the female part B-1 direction of stretching out dorsad.

When male part A-1 connected female part B-1, as shown in Figure 6, a peripheral 8b of the opening 8 on the slide plate 5 was held by the permanent magnet 1 of protruding E, and its suction is greater than the power that acts on another peripheral 8c.Because on protruding E, in the side near peripheral 8b, be provided with engagement recess 12, the peripheral 8b of slide plate 5 just can be adsorbed in the surface of recess 12 internal projection E.

As a result, if male part A-1 outwards pulls out from female part B-1, protruding E will can not move along pull-out direction, because slide plate 5 absorption thereon.Because the oral area 9 of recess 12 prevents just that near the upper surface of peripheral 8b male part A-1 from skidding off.

When the negative and positive part was in such engagement, they can be by along the direction of arrow among Fig. 6, promptly moved by protruding E along the direction that press-fits slide plate 5 and held slide plate 5 recess 12 in, spurred their simultaneously and separated and break away from and mesh.

Referring now to Fig. 9, the second embodiment fastener is described.

The negative and positive assembly B-2 of second embodiment and A-2 be identical with first embodiment basically.These have the parts of said function.With identical label mark, it illustrates omission.

The male part A-1 of this embodiment is provided with engagement 9a, and it extends from the head of protruding E.Meshing flake 9a works by the 12 identical modes of the engagement recess on the protruding E of the first embodiment male part A-1.

In other words, the protruding E among the male part A-2 has a protuberance at its head, and as shown in Figure 9, the periphery of slide plate 5 can be drawn onto on the surface of the protruding E that is in meshing flake 9a below.

Should be noted that meshing flake 9a is not limited to a kind of shown in the figure, a flange can be set, extend from protruding E.Meshing flake 9a may be made in pin or its class jljl, goes out E from projection and extends.

Peripheral 8e, the 8f of the opening of the slide plate 5 under the female part, the position relation that put upside down with first embodiment at opening 7 places of the opening 6 of first plate 3 and second plate 4.

Especially, when outwards pulling out slide plate 5, at the peripheral 8f of the opening 8 of operation lip spare 5a one side just with the perimeter alignment of opening 6 and 7 or protrude a bit a little.Leave the 8d of side direction broad with opening 6 and 7 at the peripheral 8e of an opposite side.

When connecting male part A-2 and female part B-2 by this embodiment rightabout, when promptly oriented manipulation lip spare 5a installed the meshing flake 9a of protruding E, the engagement/disengagement of negative and positive part was to operate by the mode of putting upside down.In the time of in male part A-2 inserts female part B-2, the slide plate 5 of female part B-2 is inwardly attracted by protruding E, and its peripheral 8f is drawn onto on the protruding E.When protruding E when detaching direction spurs, the upper surface of peripheral 8f skids off to prevent protruding E near meshing flake 9a.

When the negative and positive part is in engagement, along separating (along the direction of arrow among Fig. 9) direction pulling slide plate 5, the negative and positive part is drawn back, and break away from engagement.

Referring to Figure 10 and 11, the fastener of the 3rd embodiment is described.

The female part B-3 of the 3rd embodiment is except recess 10 ' be located at the both sides 3a of first plate 3, and is structurally substantially the same in first embodiment.Be loaded on the block 11 of recess 10 ' interior ' protrude from the side of second plate 4.Assembly with identical function is with identical label mark, and it illustrates omission.

According to the 3rd embodiment, slide plate 5 and the 3rd plate 4 are connected in first plate 3 of female part B-3 by the same mode of first embodiment.At this moment,, with the recess 10 of block 11 ' the 3rd plate 3 of packing into ' in, by welding, first plate 3 is connected securely with second plate 4.

According to the used constructed and mode of first and second plates of the female part B-1 of first embodiment,, first and second plates 3 and 4 can be fixed together by welding.

Be loaded on the block 11 of recess 10 ' interior ' can be welded in this recess, or the side of both sides 3a can be welded in the both sides of the contact both sides 3a of second plate 4.Can on the parts outside above-mentioned, weld.

Adopt the female part B-3 of the 3rd embodiment by the identical mode of first embodiment, and adopt structurally with the identical male part of male part A-1.Therefore, its explanation is omitted.

Referring to Figure 12 to 15, the fastener of the 4th embodiment is described.Except the outward appearance that changes male part A-4 and ferromagnet plate 16 also be provided with ferromagnetic plate 16 ', the fastener of the 4th embodiment is substantially the same in first embodiment.Female part B-4 is also substantially the same in first embodiment.Assembly with identical function is with identical label mark, and except the assembly that changes, it illustrates omission.

First plate 103 that constitutes female part framework F comprises both sides 3a, inserts the opening 6 of male part, the block 3c on 6 jiaos of openings, and in the hole 22 of 3b portion one side.Salient angle 3e protrudes on the limit, two ends of 3d portion, to form recess 21.Block 11 is located on the 3a of both sides, and they are loaded in the recess 10 of second plate 104.

Second plate 104 comprises an opening 7, and female part A-4 inserts in it.Plate 104 is to constitute like this, and it can be connected in first plate between the both sides 3a of first plate 103.Described recess 10 is located at both sides to admit block 11.In addition, be provided with catch 23 and 24, it is folded into first plate 103 downwards.

Catch 23,24 is located at the slip side of slide plate 105, and slide plate 105 is inserted in again between first plate 103 and second plate 104 of female part framework F.The dual-side 3a of the catch 23,24 and first plate 103 skids off in order to anti-limited slip plate 105 together.

Catch 23,24 is located on the angle of plate 105, and interval therebetween allows operation lip spare 5a not push or release with having play.

Side plate 105 comprises a bigger opening 8, and the latter is communicated with opening 6 and 7, and its shape is made and can be slidably inserted in the female part framework F.Be provided with operation lip spare 5a, it protrudes along its glide direction, and its width is less than slide plate 105.

The slide plate 105 of said structure is inserted between first and second plates 103 and 104 in some way, and lip spare 105 can be stretched between two catch 23.Described block 11 assembles by the identical mode of first embodiment, with first and second plates 103 and 104 that are meshed of welding securely, thereby constitutes female part B-4.

The catch 23 of second plate 104 is near the salient angle 3e of first plate 103, and therefore, the edge 21a of the recess 21 on first plate 103 and the edge of second plate 104 are arranged in the same plane basically.

When causing that the lip spare 5a that inserts the slide block 105 in the female part framework F shifts out framework F, the convex shoulder 27 of lip spare 5a will abut against on the inserted sheet 23.The shape of lip spare 5a is made such, and when catch 23 blocked convex shoulder 27, it can be tried one's best from the line place on continuous salient angle 3e top and stretch littlely.

The opening 8 of slide block 105 respectively with the opening 6 of first and second plates 103,104 of female part framework F and 7 position relation with being the same among first embodiment.Opening 8a is along the direction broad of lip spare 5a.Its peripheral 8c follows the periphery of opening 6,7 to leave distance on one side of opening 8a, and peripheral 8b is located at the described periphery near opening 6 and 7.

The board 3b of first plate 103 is connected in basic material D, and the fixed head 25 with hole 25a is connected on the basic material D.Pin with a head passes hole 25a separately, and by means of the other end of pressing cotter pin, B-4 is connected on the basic material female part.

The present embodiment fastener is by same mode engagement/disengagement and the operation of first embodiment.Thereby omission explanation.

According to the 4th embodiment, the lip spare 5a of slide plate 105 only is configured in the recess 21 of plate 103, the line on extended basically two salient angle 3e tops.This topology layout is convenient to slide plate and is pressed in the recess 21, and prevents that lip spare 5a is undesirable and skid off.

In the various embodiments described above, block 11,11 ' be arranged on first plate 103 or second plate 104, recess 10,10 ' be arranged on first plate 103 or second plate 104.Block 11,11 ' and recess 10,10 ' can be arranged on the both sides 3a of first plate 103, corresponding block 10,10 ' and recess 11,11 ' be arranged on second plate 4,104.

Should be noted that the present invention is limited to these embodiment by no means.Therefore, can on the slide plate in inserting the female part framework, a little protuberance be set, so that it protrudes from female part framework outside.

Also an opening can be set in the female part framework, pass this opening so that operate described slide plate.

Except other favourable characteristics, the present invention also has many advantages, wherein can easy and accurately weld, position error can not appear because before welding by means of block 11,11 ' adapt to recess 10,10 ' in assemble first plate 3,103 and second plate 4,104.

Claims (11)

1. fastener comprises:

A projection or a male part that is provided with or makes by permanent magnet with projection of permanent magnet,

A female part, it comprises what a female part framework of being made up of first and second plates and one were made by ferromagnetic material, be inserted in slidably between described first and second plates, and from the slide plate of female part framework peripheral operation, described first and second plates and slide plate have the opening of connection, the projection of male part is passed therebetween, the side that projection in the described insertion female part is attracted by the permanent magnet of projection at slide plate is provided with or an engagement recess or a meshing flake, the periphery of slide plate opening is drawn onto on the face of described recess internal projection, or be drawn onto on the face of the projection that is in the meshing flake below

It is characterized in that described first plate of female part framework comprises the relative biside plate that bends inwards along the edge and the recess and/or the block that are positioned at described biside plate upper end, described second plate has the block of adaptive described recess on its both sides of the edge, or admit the recess of described block

Inserting first plate and second plate that are assembled up in the recess by means of block meshes together by firm welding ground.

2. by the described fastener of claim 1, it is characterized in that first and/or second plate made by ferromagnetic material.

3. by the described fastener of claim 1, it is characterized in that first and second plates are made by nonmagnetic substance.

4. by the described fastener of claim 1, it is characterized in that the part of described slide plate is outwards protruded from described female part framework.

5. by the described fastener of claim 1, it is characterized in that the part of described female part framework is cut, the part of described slide plate is divided the opening that forms via this cut-away and is exposed.

6. by the described fastener of claim 1, it is characterized in that described slide plate is loaded in the described female part framework, when described slide plate was attracted by described female part, it was protruding from the female part framework.

7. by the described fastener of claim 1, it is characterized in that at the engagement recess that is provided with on the male part projection be the stage portion as groove of making on described projection.

8. by the described fastener of claim 1, it is characterized in that the described meshing flake on the male part projection is a part of extending from convex top, be step.

9. by the described fastener of claim 1, it is characterized in that described welding is at recess and is assemblied between the block in this recess and carries out.

10. by the described fastener of claim 1, it is characterized in that described welding is to carry out between the part of end in contact on the upper end of the side plate of first plate and second plate and on first plate.

11. by the described fastener of claim 1, it is characterized in that welding and be in the side of the side plate of first plate and contact between the side of second plate of the described side of first plate and carry out.

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