CN206293360U - Anti-loose inductive switch - Google Patents

Abstract

A kind of anti-loose inductive switch, the anti-loose inductive switch includes the first conducting terminal, second conducting terminal for including piston part of head and spigot, and at least one electric-conductor comprising an insulation shell, one.The insulation shell include one around an axis and define through hole around face.The through hole has a large aperture section, a small-bore section, and a terrace.The sectional area ratio of the large aperture section axis vertical with small-bore section is more than 1 and no more than 3.There is the head one to be supported shoulder face and first contact surface.The piston part has second contact surface for being separated by a gap with first contact surface.An induction cavity should be jointly defined around face, first contact surface and second contact surface.The electric-conductor is placed in the induction cavity and is rolled between a via positions and an off position.In the via positions, the electric-conductor, first contact surface, and second contact surface form a current path.

Description

Anti-loose inductive switch

Technical field

The utility model is related to a kind of switch, more particularly to a kind of by the flush structure of inter-module, and to reach chain Connect the anti-loose inductive switch of firm effect.

Background technology

Inductive switch be it is a kind of vibrations are sensed by internal conductive component, with to a current loop formation path or The switch of open circuit.Also, due to its sensitive triggering property, and the vibrations of all directions can be sensed, and had quite extensive Application category, indispensable electronic component in even more many electronic products.

But, for current inductive switch, its conductive component is all to be encapsulated in one by a non-conductive shell Body, and during two electrodes define the cavity to be formed, and by the non-conductive housing and an interelectrode inlay card knot Structure strengthens connection relationship between the two.

Wherein, the flush structure, just like the aspect disclosed in the Fig. 1 in Japanese Unexamined Patent Publication the 2003-161653rd, is by two Individual electrode portion material（Numbering A1, A2）Each towards relative chimeric direction（Numbering 10A, 10B）Fill in a cylindrical body（Numbering B）, And allow a cylindric enlarged head of each electrode portion material（Numbering 3）It is embedded in multiple circular protrusions of the cylindrical body（Compile Numbers 7,8,9）Between.But, due to being to allow the electrode portion material easily to be assembled with the cylindrical body, so the circular protrusion Height it is too small relative to the diameter proportion of the cylindric enlarged head, thus result in the electrode portion material cannot securely with this Cylindrical body is connected.

Additionally, also just like another flush structure disclosed in U.S. patent Nos the US7421793B2nd, be directly according to By two end caps（Numbering 110,160）With a central unit（Numbering 140）Between frictional force prevent the end cap from releasing.So And, this will cause the end section of the central unit embedded by the end cap（Numbering 122,172）Certain length is needed, while It is also required to consider the interference engagement of the end section and the central unit, to produce suitable frictional force.In this way, can not only increase Plus the complexity and manufacturing cost of its component procedure for processing, and also probably due to inter-module excessively close-fitting so that the end cap During assembling, extrude the air pressure for producing and outwards push, and cause its connection relationship with the central unit not It is firm, or even the phenomenon such as get loose.

The content of the invention

The purpose of this utility model is that offer is a kind of can consolidate effect by the flush structure of inter-module to reach link Anti-loose inductive switch.

The anti-loose inductive switch of the utility model, comprising an insulation shell, first conducting terminal, one second Conducting terminal, and at least one electric-conductor.

The insulation shell includes one around an axis, and define through hole around face.The through hole has one It is individual it is neighbouring should around the large aperture of face one end section, one it is neighbouring should be around the face other end, and aperture is small less than large aperture section Aperture section, and one be connected to the large aperture section terrace intersegmental with the small-bore.Large aperture section is vertical with small-bore section The sectional area ratio of the axis is more than 1 and no more than 3.

First conducting terminal includes a head for being embedded at large aperture section, and one is embedded at small-bore section Spigot.The head have one be used to being resisted against the terrace to shoulder face, and first contact surface that shoulder face is supported in contrast to this. The spigot is wide along the footpath of the vertical axis direction along the footpath head that is not more than wide in the direction of the vertical axis, and part passes this Through hole.

Second conducting terminal includes a piston part for being embedded at large aperture section.There is one first to be connect with this for the piston part Contacting surface is separated by second contact surface in gap.One should be jointly defined around face, first contact surface, and second contact surface Individual induction cavity.

The electric-conductor is placed in the induction cavity, and is rolled between a via positions and an off position.It is logical at this During the position of road, the electric-conductor, first contact surface, and second contact surface form a current path；In the off position, The electric-conductor, first contact surface and second contact surface do not form the current path.

It is preferred that the piston part of second conducting terminal also has a plug side face for being connected to second contact surface, and extremely A few overhead kick for being formed at the plug side face.The overhead kick includes a stopping surface.The insulation shell also includes that at least one coordinates The overhead kick and be recessed and be formed at the groove around face.The stopping surface phase buckle of the groove and the overhead kick of the piston part, to place restrictions on this Second conducting terminal is in reverse to the direction displacement that the piston part is embedded in large aperture section.

It is preferred that the spigot of first conducting terminal has a bolt side face around the axis, and at least one forms In the overhead kick of the bolt side face.The overhead kick includes a stopping surface.The insulation shell is also recessed including at least one cooperation overhead kick Fall into and be formed at the groove around face.The stopping surface phase buckle of the groove and the overhead kick of the spigot, to place restrictions on first conducting end Son is in reverse to the direction displacement that the spigot is embedded in small-bore section.

It is preferred that the insulation shell also includes first end face, the second end face in contrast to the first end face, and One shell surface being connected between the first end face and the second end face.There is the first end face one to connect small-bore section First opening.The second end face has second opening for connecting large aperture section.The spigot also has one and is connected to this First connecting end surface of bolt side face.Second conducting terminal also includes an end cap for linking the piston part.The end cap has one Lid stopping surface for being resisted against the second end face, and second connecting end surface in contrast to the lid stopping surface.

It is preferred that the spigot also has first electric terminal for being convexly equipped in first connecting end surface.The end cap also has There is second electric terminal for being convexly equipped in second connecting end surface.First electric terminal passes first opening.This second Electric terminal passes second opening.

It is preferred that the end cap also has a lid side face being connected between the lid stopping surface and second connecting end surface.Should Lid side face includes at least one contact edge substantially flushed with the shell surface.

It is preferred that the inductive switch also includes a pin set.The pin set is electrically connected to first conduction including one First pin part of terminal, and a second pin part for being electrically connected to second conducting terminal.The first pin part with this Two pin parts are all direct insertion pin.

It is preferred that the inductive switch also includes a pin set.The pin set is electrically connected to first conduction including one First pin part of terminal.The insulation shell also includes one from the recessed pin groove of the first end face.The pin groove has one The individual central portion that section is connected with the small-bore, and at least one external connection portion for extending to the shell surface by the central portion.This One pin part is to be embedded at the central portion and the external connection portion, and with an attachment face substantially flushed with the shell surface.

It is preferred that the inductive switch also includes a pin set.The pin set includes a first pin part.The insulation shell Body also includes that at least one is recessed from the shell surface, and is communicated to the pin groove of the first end face.The first pin part is in L Shape, and with an erection part for being electrically connected to first conducting terminal, and one is connected with the erection part, and can be embedded at The horizontal flat portion of the pin groove.

It is preferred that first contact surface can define the one of which of plane and groove.

It is preferred that second contact surface can define plane, groove, and projection one of which.

It is preferred that the groove of first contact surface is curved, V-arrangement, and U-shaped one of which；Second contact surface it is recessed Groove is curved, V-arrangement, and U-shaped one of which.

The beneficial effects of the utility model are：Large aperture section is put into by the assembly orientation by first conducting terminal In, this is resisted against the terrace to shoulder face, the area of fixing, and the overhead kick by the spigot and the insulation shell can not only be increased The groove of body forms the structure of mutual inlay card, prevents from releasing and linking firm effect to reach.

Brief description of the drawings

Other features of the present utility model and effect, will clearly be presented in the implementation method with reference to schema, wherein：

Fig. 1 is first embodiment three-dimensional cutaway view of the anti-loose inductive switch of the utility model；

Fig. 2 is a front view of Fig. 1, illustrates in the first embodiment around an axis, and defines one The insulation shell of individual through hole, and the assembly orientation for defining；

Fig. 3 is an incomplete three-dimensional cutaway view, illustrates the through hole defined by the insulation shell, and be formed at The insulation shell is open along one first opening at the axis two ends with one second；

Fig. 4 is second embodiment three-dimensional cutaway view of the anti-loose inductive switch of the utility model；

Fig. 5 is 3rd embodiment three-dimensional cutaway view of the anti-loose inductive switch of the utility model；

Fig. 6 is fourth embodiment three-dimensional cutaway view of the anti-loose inductive switch of the utility model；

Fig. 7 is a three-dimensional cutaway view of the 5th embodiment of the anti-loose inductive switch of the utility model；

Fig. 8 is sixth embodiment three-dimensional cutaway view of the anti-loose inductive switch of the utility model；

Fig. 9 is a three-dimensional cutaway view of the 7th embodiment of the anti-loose inductive switch of the utility model；

Figure 10 is a three-dimensional cutaway view of the 8th embodiment of the anti-loose inductive switch of the utility model；

Figure 11 is a three-dimensional cutaway view of the 9th embodiment of the anti-loose inductive switch of the utility model；

Figure 12 is a three-dimensional cutaway view of the tenth embodiment of the anti-loose inductive switch of the utility model；

Figure 13 is a three-dimensional cutaway view of the 11st embodiment of the anti-loose inductive switch of the utility model.

Specific embodiment

Before the utility model is described in detail, it shall be noted that in the following description content, similar component be with It is identically numbered to represent.

Refering to Fig. 1, Fig. 2 and Fig. 3, a first embodiment of the anti-loose inductive switch of the utility model is exhausted comprising one Edge housing 100, first conducting terminal, 200, second conducting terminal 300, and an electric-conductor 400.

The insulation shell 100 includes one around an axis L, and define through hole 600 around face 110, extremely Few one coordinates the structure of first conducting terminal 200 and is recessed and is formed at the groove 120, at least one around face 110 and matches somebody with somebody Close the structure of second conducting terminal 300 and be recessed and be formed at the 121, first end face 130, of groove around face 110 The individual second end face 140, in contrast to the first end face 130 is connected between the first end face 130 and the second end face 140 Shell surface 150, and one from the recessed pin groove 160 of the first end face 130.The groove 120,121 is distinguished in the present embodiment It is two.Wherein, the through hole 600 have one it is neighbouring should around the large aperture of the one end of face 110 section 610, is neighbouring should be around The other end of face 110, and aperture less than the large aperture section 610 small-bore section 620, and one be connected to the large aperture section 610 with Terrace 630 between small-bore section 620, specifically, large aperture section 610 is adjacent to the second end face 140, small-bore section 620 adjacent to the first end face 130.In addition, the first end face 130 has first opening for connecting small-bore section 620 131；The second end face 140 has second opening 141 for connecting large aperture section 610；And, the pin groove 160 has One central portion 161 being connected with small-bore section 620, and multiple extends to the outer of the shell surface 150 by the central portion 161 Socket part 162.The external connection portion 162 is multiple in the present embodiment, but it is understood that the external connection portion 162 can also be one.Will Illustrate, the sectional area ratio of large aperture section 610 and 620 vertical axis L of small-bore section between 1 to 3, equally Ground, sectional area ratio that the depth around face 110 constituted is depressed in also between 1 to 3 relative to the groove 121,120 Between, that is, the sectional area ratio of the groove 121 axis L vertical with the groove 120 is also the sectional area ratio between 1 to 3 Smaller then anti-loose effect can be poorer, but ratio is excessive and has the problem of process capability, thus the sectional area ratio between 1 to Between 3, with more than 1 and no more than 3 is optimal.In the present embodiment, the sectional area ratio is preferably between 1.3 to 1.6, but It is not limited, also such as the implementation aspect of Figure 11 it can be made to be preferably between 1 to 1.5, and is also contained in the utility model In the range of.Additionally, define parallel axis L, and by the second end face 140 towards the direction of the first end face 130 be a group Dress direction X.

First conducting terminal 200 includes a head 210, and a spigot 220 for linking the head 210.It is noted that , because the spigot 220 is along the footpath footpath for being not more than the head 210 along vertical axis L directions wide in vertical axis L directions Width, and small-bore section 620 is wide between the head 210 and the spigot 220 along the footpath in vertical axis L directions.So will When first conducting terminal 200 is assembled in into the insulation shell 100, it is necessary to be first put into this along assembly orientation X with the spigot 220 In large aperture section 610, then allow the spigot 220 to be embedded at small-bore section 620, and cause that the head 210 is embedded at the large aperture Section 610, the part of spigot 220 passes the through hole 600.Wherein, the head 210 has one and is used to be resisted against the terrace 630 To shoulder face 211, and first contact surface 212 that shoulder face 211 is supported in contrast to this.Additionally, there is the spigot 220 one to surround being somebody's turn to do The bolt side face 221 of axis L, multiple overhead kicks 222, for being formed at the bolt side face 221 are connected to the first company of the bolt side face 221 Contact surface 223, and first electric terminal 224 for being convexly equipped in first connecting end surface 223.The overhead kick 222 is in the present embodiment It is multiple, but it is understood that can also be one.

It is noted that first electric terminal 224 passes first opening 131, and protrude from the first end face 130, and can be with a circuit node（It is not shown）It is attached；And, the groove 120 is extruded by the overhead kick 222 Formed, so the groove 120 is corresponding with the number of the overhead kick 222.In addition, each overhead kick 222 includes a block Face 225 so that when the spigot 220 is embedded at small-bore section 620, the stopping surface 225 can be with the groove of the insulation shell 100 120 phase buckles, assembly orientation X displacements are in reverse to place restrictions on first conducting terminal 200.

Second conducting terminal 300 includes a piston part 310, and an end cap 320 for linking the piston part 310.It is noted that , in the present embodiment, the piston part 310 is along the footpath end cap 320 that is less than wide in vertical axis L directions along the vertical axis The footpath in L directions is wide, and large aperture section 610 along vertical axis L directions footpath it is wide be equally less than the end cap 320, so will When second conducting terminal 300 is assembled in into the insulation shell 100, it is necessary to be first put into this along assembly orientation X with the piston part 310 In large aperture section 610, the piston part 310 could be allowed to be embedded at large aperture section 610.Also, the piston part 310 have one with this One contact surface 212 is separated by 311, plug side face 312 for being connected to second contact surface 311 of the second contact surface in gap, And multiple is formed at the overhead kick 313 of the plug side face 312.The overhead kick 313 is multiple in the present embodiment, but it is understood that also may be used Being one.Additionally, the end cap 320 has a lid stopping surface 321, for being used to be resisted against the second end face 140 opposite In 322, second electric terminal for being convexly equipped in second connecting end surface 322 of the second connecting end surface of the lid stopping surface 321 323, and a lid side face 324 being connected between the lid stopping surface 321 and second connecting end surface 322.It is noted that should Second electric terminal 323 passes second opening 141；And, the groove 121 is to be extruded to be formed by the overhead kick 313, institute It is corresponding with the number of the overhead kick 313 with the groove 121.In addition, each overhead kick 313 includes a stopping surface 314, make Obtain the piston part 310 be embedded at the large aperture section 610 when, the stopping surface 314 can mutually block with the groove 121 of the insulation shell 100 Button, assembly orientation X displacements are in reverse to place restrictions on second conducting terminal 300.Additionally, the lid side face 324 includes multiple and is somebody's turn to do The contact edge 325 that shell surface 150 substantially flushes.The contact edge 325 is multiple in the present embodiment, but it is understood that also may be used Being one.In the present embodiment, due to the insulation shell 100 generally be in cuboid, and the end cap 320 be in cylinder, and its All it is symmetrical in axis L so that the contact edge 325 is at least upper and lower two；Wherein, be can with second electric terminal 323, Or the contact edge 325 and another circuit node flushed with the bottom surface of shell surface 150（It is not shown）It is attached.

And after first conducting terminal 200 is assembled in into the insulation shell 100, the electric-conductor 400 just can be along the assembling Direction X is put into large aperture section 610.Then, then by second conducting terminal 300 it is assembled in the insulation shell 100.Now, An induction cavity 700 should be jointly defined around face 110, first contact surface 212, and second contact surface 311 so that the conduction Part 400 is placed in the induction cavity 700, and can be rolled between a via positions and an off position.It is noted that In the present embodiment, the groove that first contact surface 212 and second contact surface 311 are defined is all curved, but not as Limit, the trapezoidal, U-shaped and V-arrangement that also can be respectively presented such as Fig. 5, Fig. 6 and Fig. 7, or even the form that plane can be also presented；Also, should The plane that second contact surface 311 can be also presented such as Fig. 8, or the embodiment as be described hereinafter such as the projection presented such as Fig. 9 and Figure 10 Other shapes.Though additionally, the number of the electric-conductor 400 the present embodiment be one, be not limited, also can for one with On, as shown in Figures 4 to 7, using two electric-conductors 400；Meanwhile, can also be led using different size of as shown in Fig. 8 and Fig. 9 Electric part 400（400’）.However, for the inductive switch, the number and size of the electric-conductor 400 are to be relevant to triggering The sensitivity of open circuit, so different use demands are must account for, to configure suitable electric-conductor 400.

Whereby, as shown in Fig. 2 when the electric-conductor 400 is in the via positions, that is, represent the electric-conductor 400, this first Contact surface 212, and second contact surface 311 is contacting one another, to form a current path, the circuit node can be passed through The current path transmits electric signal.Another situation, when the electric-conductor 400 is in the off position, that is, represents the electric-conductor 400th, at least both do not contact with each other between first contact surface 212, and second contact surface 311, thus do not form the electric current Path so that electric signal cannot be transmitted between the circuit node.

As described above, an assemble method of the inductive switch can be summarized.Coordinate and refer to Fig. 1, Fig. 2 and Fig. 3, the assembling Method is comprised the steps of：

(A) first conducting terminal 200 is put into large aperture section 610 along assembly orientation X.Wherein, it is with the spigot 220 are first put into large aperture section 610.

(B) first conducting terminal 200 is pushed, this is resisted against the terrace 630 to shoulder face 211.Now, the spigot 220 Be embedded at the small-bore section 620, and the spigot 220 overhead kick 222 with the phase buckle of the groove 120 to increase frictional resistance, and By the overhead kick 222 in the direction opposite assembly orientation X, and prevent first conducting terminal 200 and the insulation shell 100 Generation is released.

(C) electric-conductor 400 is put into large aperture section 610 along assembly orientation X.

(D) piston part 310 of second conducting terminal 300 is embedded at large aperture section 610 along assembly orientation X, and is pushed away Second connecting end surface 322 is pressed, the lid stopping surface 321 is resisted against the second end face 140.Now, the overhead kick of the piston part 310 313 with the phase buckle of the groove 121 to increase frictional resistance, and by the overhead kick 313 in the direction opposite the assembly orientation X, and prevent second conducting terminal 300 from being produced with the insulation shell 100 and release.Also, should be around face 110, first contact Face 212, and second contact surface 311 defines the induction cavity 700 jointly, and the electric-conductor 400 can rollably be placed in the sense Answer in chamber 700.

It should be noted that in above-mentioned steps flow, the description of any process or mode should be considered as the mould of the work flow Block, fragment, part, or step, it includes the specific function that one or more implement to present in the work flow, if energy The mode understood by those skilled in the art enters row order exchange, to reach identical function or effect, ought to be included in this In the range of utility model.

In addition, referring to Figure 11, the 9th embodiment of the anti-loose inductive switch of the utility model includes an insulation Housing 100 ', first conducting terminal 200 ', 300, two electric-conductors 400 of second conducting terminal, and a pin set 500。

Wherein, it is following several at the Main Differences between the 9th embodiment and the first embodiment：

(1) the sectional area ratio of the large aperture section 610 ' of the insulation shell 100 ' and small-bore section 620 ' vertical axis L Between 1 to 1.5.Also, multiple pin grooves 160 ' of the insulation shell 100 ' are recessed from the shell surface 150, and are communicated to The first end face 130.The pin groove 160 ' is multiple in the present embodiment, but it is understood that can also be one.

(2) head 210 ' and spigot 220 ' of first conducting terminal 200 ' respectively to should large aperture section 610 ' and should The aperture of small-bore section 620 '.

(3) pin set 500 includes a first pin part 510.Wherein, the first pin part 510 is L-shaped, and tool There are an erection part 511, and a horizontal flat portion 512 being connected with the erection part 511.It is noted that implementing the 9th In example, the erection part 511 is formed with an embedding hole 513 so that first electric terminal 224 can be embedded at the embedding hole 513, and electric It is connected to first conducting terminal 200 '.In addition, the horizontal flat portion 512 also can accordingly be embedded at one of pin groove 160 '； Also, the bottom surface in the horizontal flat portion 512 slightly protrudes from the bottom surface on the shell surface 150, and can be connected with one of circuit node.

Furthermore, refering to Figure 12, the tenth embodiment of the anti-loose inductive switch of the utility model includes an insulation 300, two electric-conductors 400 of the second conducting terminal of the first conducting terminal 200, of housing 100, and a pin set 500’。

Wherein, it is at the Main Differences between the tenth embodiment and the first embodiment：

The pin set 500 ' includes a first pin part 510 ' for being electrically connected to first conducting terminal 200, and one It is electrically connected to the second pin part 520 ' of second conducting terminal 300.Wherein, the first pin part 510 ' and the second pin part 520 ' are all direct insertion pin, and have an embedding hole 513 ' and an embedding hole 523 ' respectively, and can respectively for first electricity Gas contact 224 and second electric terminal 323 are embedded.The first pin part 510 ' can be inserted respectively with the second pin part 520 ' Located at a circuit board（It is not shown）On through hole, or be plugged on a DIP（Dual In-line Package）Socket （It is not shown）On.

Finally, refering to Figure 13, the 11st embodiment of the anti-loose inductive switch of the utility model is exhausted comprising one 300, two electric-conductors 400 of the second conducting terminal of the first conducting terminal 200, of edge housing 100, and a pin set 500”。

Wherein, it is at the Main Differences between the 11st embodiment and the first embodiment：

The pin set 500 " is in cuboid including one, and is embedded at the central portion 161（See Fig. 1）It is external with one of them Portion 162（See Fig. 1）And it is electrically connected to the first pin part 510 of first conducting terminal 200 ".Also, the first pin part 510 " It is used for the embedding hole 513 that allows first electric terminal 224 to be embedded with one ", and one substantially flush with the shell surface 150 Attachment face 514 ".And, in the 11st embodiment, the first pin part 510 " it is the pin for being embedded the insulation shell 100 In groove 160, and cause the attachment face 514 " and the contact edge 325 with each can be connected with the circuit node.

It should be noted that the pair relationhip of both first contact surface 212 of above-mentioned Fig. 1 to Figure 13 and the second contact surface 311 It is not limited with the drawing, but can be mutually arranged in pairs or groups, for example, is arranged in pairs or groups curved with the first trapezoidal contact surface 212 Two contact surfaces 311, are similarly included in the range of the utility model.

In sum, the anti-loose inductive switch of the utility model has effect and advantage as described below, so really can Reach the purpose of this utility model：

First, by the overhead kick 222（313）Stopping surface 225（314）, the groove 120 with the insulation shell 100（121） Phase buckle is placed restrictions on first conducting terminal 200 to increase frictional resistance, effectively and is in reverse to the group with second conducting terminal 300 Dress direction X displacements, and reach the firm effect of link.

2nd, it is put into large aperture section 610 by assembly orientation X by first conducting terminal 200, this is supported shoulder face 211 are resisted against the terrace 630, to increase fixing area, so as to avoid first conducting terminal 200 in second conducting terminal During 300 are assembled in the insulation shell 100, the air pressure of the generation that is squeezed and along assembly orientation X push displacement, Reach the effect for preventing from releasing.

3rd, using the overhead kick 222（313）It is embedded in the insulation shell 100 and is recessed and forms the groove 120（121）'s Design so that large aperture section 610 can correspond to the groove with the sectional area ratio of 620 vertical axis L of the small-bore section 120（121）Depth adjust roughly, with response to different use conditions.For example, under the violent environment of temperature change, institute State groove 120（121）Depth should deepen, i.e., described overhead kick 222（313）Thickness increase so that the sectional area ratio increase Plus, to avoid first conducting terminal 200 with second conducting terminal 300 because expanding with heat and contract with cold, and release in the insulation shell 100。

As described above, embodiment only of the present utility model, when can not with this limit the utility model implementation Scope, i.e., all simple equivalence changes made according to the utility model claims and description and modification, all still belong to Scope of the present utility model.

Claims (12)

1. a kind of anti-loose inductive switch, comprising an insulation shell, the first conducting terminal, second conducting end Son, and at least one electric-conductor；It is characterized in that：

The insulation shell includes one around an axis, and define through hole around face, the through hole has a neighbour Closely should around the large aperture of face one end section, one it is neighbouring should be around the face other end, and aperture is less than the small-bore of large aperture section Section, and one be connected to the large aperture section terrace intersegmental with the small-bore, large aperture section axle vertical with the small-bore section The sectional area ratio of line is more than 1 and no more than 3；

First conducting terminal includes a head for being embedded at large aperture section, and a bolt for being embedded at small-bore section Portion, the head have one be used to being resisted against the terrace to shoulder face, and first contact surface that shoulder face is supported in contrast to this should Spigot is wide along the footpath of the vertical axis direction along the footpath head that is not more than wide in the direction of the vertical axis, and part passes this and leads to Hole；

Second conducting terminal includes a piston part for being embedded at large aperture section, and the piston part has one with first contact surface It is separated by second contact surface in gap, should jointly defines a sense around face, first contact surface and second contact surface Answer chamber；And

The electric-conductor is placed in the induction cavity, and is rolled between a via positions and an off position, in path position When putting, the electric-conductor, first contact surface, and second contact surface form a current path, and in the off position, this is led Electric part, first contact surface, and second contact surface do not form the current path.

2. anti-loose inductive switch according to claim 1, it is characterised in that：The piston part of second conducting terminal also has There is a plug side face for being connected to second contact surface, and at least one overhead kick for being formed at the plug side face, the overhead kick includes one Individual stopping surface, the insulation shell also includes that at least one coordinates the overhead kick and be recessed and be formed at the groove around face, the groove With the stopping surface phase buckle of the overhead kick of the piston part, with place restrictions on second conducting terminal be in reverse to the piston part be embedded in the large aperture section Direction displacement.

3. anti-loose inductive switch according to claim 1, it is characterised in that：The spigot of first conducting terminal has One bolt side face around the axis, and at least one overhead kick for being formed at the bolt side face, the overhead kick include a stopping surface, should Insulation shell also includes that at least one coordinates the overhead kick and be recessed and be formed at the groove around face, and the groove falls with the spigot The stopping surface phase buckle of hook, the direction displacement that the spigot is embedded in small-bore section is in reverse to place restrictions on first conducting terminal.

4. anti-loose inductive switch according to claim 3, it is characterised in that：The insulation shell also includes one first End face, a second end face in contrast to the first end face, and a shell being connected between the first end face and the second end face Surface, the first end face has first opening for connecting small-bore section, and the second end face has one and connects the macropore Second opening of footpath section, the spigot also has first connecting end surface for being connected to the bolt side face, and second conducting terminal is also Including an end cap for linking the piston part, the end cap has a lid stopping surface for being used to be resisted against the second end face, and one In contrast to the second connecting end surface of the lid stopping surface.

5. anti-loose inductive switch according to claim 4, it is characterised in that：The spigot also has one and is convexly equipped in this First electric terminal of the first connecting end surface, the end cap is also convexly equipped in the second of second connecting end surface and electrically connects with one Point, first electric terminal passes first opening, and second electric terminal passes second opening.

6. anti-loose inductive switch according to claim 4, it is characterised in that：The end cap also has one and is connected to this Lid side face between lid stopping surface and second connecting end surface, the lid side face includes that at least one substantially flushes with the shell surface Contact edge.

7. anti-loose inductive switch according to claim 4, it is characterised in that：The inductive switch also includes a pin Group, the pin set includes a first pin part for being electrically connected to first conducting terminal, and one is electrically connected to this and second leads The second pin part of electric terminal, the first pin part is all direct insertion pin with the second pin part.

8. anti-loose inductive switch according to claim 4, it is characterised in that：The inductive switch also includes a pin Group, the pin set includes a first pin part for being electrically connected to first conducting terminal, and the insulation shell also includes one certainly The recessed pin groove of the first end face, the pin groove has a central portion being connected with small-bore section, and at least one The external connection portion on the shell surface is extended to by the central portion, the first pin part is to be embedded at the central portion and the external connection portion, and tool There is an attachment face substantially flushed with the shell surface.

9. anti-loose inductive switch according to claim 4, it is characterised in that：The inductive switch also includes a pin Group, the pin set includes a first pin part, and the insulation shell also includes that at least one is recessed from the shell surface, and is communicated to The pin groove of the first end face, the first pin part is L-shaped, and is electrically connected to the upright of first conducting terminal with one Portion, and one be connected with the erection part, and the horizontal flat portion of the pin groove can be embedded at.

10. anti-loose inductive switch according to claim 1, it is characterised in that：First contact surface can define flat Face and the one of which of groove.

11. anti-loose inductive switches according to claim 1, it is characterised in that：Second contact surface can define flat The one of which of face, groove, and projection.

The 12. anti-loose inductive switch according to the one of which of claim 10 and 11, it is characterised in that：First contact The groove in face is curved, V-arrangement, and U-shaped one of which；The groove of second contact surface is curved, V-arrangement, and U-shaped wherein one Person.