CN101106037A - Ball switch - Google Patents

Abstract

A ball bearing switch includes a shell and a cover combined together, a conductive ball bearing arranged in the shell and the cover, and two terminal units. The shell has a base wall, which is connected with a plurality of side walls and four jacks penetrating the base wall. The base wall and side walls form a chamber for containing the ball bearing. Each terminal unit includes a connecting block and a two terminals extending from the connecting block. The connecting block has a first contact surface and a first combination surface in reversal direction, and a second combination surface and a third combination surface connecting the contact surface and the first combination surface. Users can insert the terminals into the corresponding jacks until the contact surface is against the base wall, and then, the terminals can extend into the chamber in parallel. In addition, users can select one of the combination surfaces to fixedly connect with a circuit board to lower production cost.

Description

Ball switch

Technical field

The present invention relates to a kind of switch, particularly relate to a kind of ball switch that is used for the conversion of circuit board signal.

Background technology

As shown in Figure 1 and Figure 2, the ball switch 10 of novel No. 155965 patent application in tw Taiwan has a housing 11, a ball 12, a lid 13 and four terminals 14.

This housing 11 is made by plastic cement, has a basal wall 111, and four continuous sidewalls 112 that extend along a length direction from this basal wall 111, and this basal wall 111 cooperates jointly with described sidewall 112 and defines a room 113, reaches an opening 114 that is in reverse to this basal wall 111.

This ball 12 is positioned at this room 113 and can conducts electricity.

This lid 13 is made by plastic cement, fill between the described sidewall 112 in order to this opening 114 of capping, so that this ball 12 is limited in this room 113, this lid 13 has four jacks 131 that run through along this length direction, and each jack 131 is cooperated by four continuous hole walls 132 to form.

Described terminal 14 utilizes the described jack 131 of the powerful insertion of an instrument (figure does not show), can obtain the location by being tight fit between described terminal 14 and the described jack 131, each terminal 14 has a built-in end 141 and that is positioned at this room 113 that is reverse and is positioned at the outer external end 142 of this lid 13, reaches four smooth flanks 143 that link to each other of this built-in end 141 of connection and this external end 142.

During use, described terminal 14 is inserted in the corresponding perforation 21 of a circuit board 20, carrying out the scolding tin operation then makes described terminal 14 be fixedly arranged in this circuit board 20, and then make these ball switch 10 installing and locating in this circuit board 20, then by changing the angle of this ball switch 10, make this ball switch 10 conducting or not conductings, just can produce the signal translation function.

Though this ball switch 10 has above-mentioned function of use, but still there is following improvement place for the treatment of:

One, because user demand difference, so this ball switch 10 is not the state (see figure 2) that all is perpendicular to this circuit board 20, also have and be the state that this ball switch 10 as shown in Figure 3 is parallel to this circuit board 20, in the case, manufactory must require earlier with described terminal 14 bendings according to the buyer, so, the buyer could insert described terminal 14 according to user demand and be welded in this circuit board 20, and then make this housing 11 be parallel to this circuit board 20, in view of the above, this ball switch 10 also has and must bend described terminal 14 and just can meet user demand, causes having processing procedure complicated, production cost is higher treats improvement place.

Two, because described terminal 14 is an independent part, so after described terminal 14 inserts described jack 131 respectively, stretch into the extremely difficult control of concordant degree of the just described built-in end 141 of length in this room 113, improvement place for the treatment of of difficult these ball switch 10 qualities of control is arranged relatively.

Three, because present scolding tin processing temperature greatly about more than 260 ℃, under this processing temperature, this lid 13 of being made by plastic cement very easily produces high temperature deformation, the side 143 of adding described terminal 14 is level and smooth shape, cause described side 143 not good with the bond strength of described hole wall 132, leave described terminal 14 easily produce rock, firm poor effect treat improvement place.

Summary of the invention

First purpose of the present invention, provide a kind of need not bend terminal just can with a circuit board with the different directions winding, the ball switch that can meet user demand, simplify processing procedure, reduce production costs.

Second purpose of the present invention provides the concordant degree of a kind of precisely control terminal, can be easier to the ball switch of controlling performance.

The 3rd purpose of the present invention provides a kind of ball switch that can improve the firm effect of terminal.

Ball switch of the present invention comprises a housing, a ball, a lid and two terminal units.

This housing comprises a basal wall along first direction extension, from this basal wall along a plurality of sidewalls that link to each other that extend with the vertical second direction of this first direction, reach four jacks that run through this basal wall and space along this second direction, each jack is cooperated by a plurality of continuous hole wall to form, and this basal wall cooperates jointly with this sidewall and defines the opening that a room and is in reverse to this basal wall.

This ball is positioned at this room and can conducts electricity.

This lid in order to this opening of capping so that this ball be limited in this room.

Each terminal unit respectively comprises a contiguous block, and extends also two terminals of space from this contiguous block.This contiguous block has a conflict face, that extends along this first direction and is in reverse to one first junction of this conflict face and space, and connects one second junction and one the 3rd junction of this conflict face and this first junction.Each terminal respectively has one and extends in order to insert the insertion section of this jack along this second direction from this conflict face, and one is positioned at built-in section of this room, and is arranged at this insertion section at least one Access Division in order to combine with the mutual holding of the hole wall of this jack.

By above-mentioned composition, only need powerful corresponding two jacks that insert this housing of two terminals of this terminal unit, touch this basal wall up to this conflict face, just can make that described terminal is concordant to be stretched in this room, finish the assembling of this terminal unit and this housing simultaneously, then, the user can select this first junction or this second junction or the 3rd junction are fixed in a circuit board according to user demand, the present invention is had to meet user demand, can reduce production costs, the concordant degree of described terminal can be conveniently controlled, and the characteristic of the firm effect of described terminal can be strengthened.

Description of drawings

Fig. 1 is an exploded perspective view of novel No. 155965 patent application in tw Taiwan;

Fig. 2 is an assembled sectional view of novel No. 155965 patent application in tw Taiwan, and the state of a ball switch perpendicular to a circuit board is described;

Fig. 3 is the view of a similar Fig. 2, illustrates that this ball switch is parallel to the state of this circuit board;

Fig. 4 is an exploded perspective view of ball switch one first preferred embodiment of the present invention;

Fig. 5 is a combination stereogram of this first preferred embodiment, illustrates that this ball switch vertically is fixed in the state of a circuit board;

Fig. 6 is the view of a similar Fig. 5, and the parallel state that is fixed in this circuit board of this ball switch is described;

Fig. 7 is along the obtained profile of the line 7-7 among Fig. 5, illustrates that four terminals of ball contact make this ball switch be in conducting state;

Fig. 8 is along the obtained profile of the line 8-8 among Fig. 5, illustrates that this ball switch is in conducting state;

Fig. 9 is the view of a similar Fig. 7, illustrates that this ball breaks away from described terminal and makes this ball switch be in nonconducting state;

Figure 10 is the view of a similar Fig. 8, illustrates that this ball switch is in nonconducting state;

Figure 11 is the view of a similar Fig. 4, illustrates that a terminal unit also comprises a pin;

Figure 12 is a user mode figure of this first preferred embodiment, and the state that one first junction is fixed in this circuit board is described;

Figure 13 is a user mode figure of this first preferred embodiment, and the state that is fixed in this circuit board is inserted this pin in explanation;

Figure 14 is the view of a similar Figure 12, explanation with this first junction bevel so that this ball switch perpendicular to the state of a horizontal plane;

Figure 15 is the view of a similar Figure 13, illustrates one second junction bevel so that this ball switch is parallel to the state of this horizontal plane;

Figure 16 is the view of a similar Fig. 7, illustrates that an Access Division is a projection;

Figure 17 is the view of a similar Figure 16, illustrates that the two-terminal of a terminal unit is the different length design;

Figure 18 is an exploded perspective view of ball switch one second preferred embodiment of the present invention;

Figure 19 is a combination stereogram of this second preferred embodiment;

Figure 20 is an assembled sectional view of this second preferred embodiment, illustrates that this ball switch is in conducting state;

Figure 21 is the view of a similar Figure 20, illustrates that this ball switch is in nonconducting state;

Figure 22 is the view of a similar Figure 18, illustrates that a terminal unit also comprises a pin;

Figure 23 is the combination stereogram that picks up from Figure 22;

Figure 24 is a user mode figure of this second preferred embodiment, and the state that one first junction is fixed in this circuit board is described;

Figure 25 is a user mode figure of this second preferred embodiment, and the state that is fixed in this circuit board is inserted this pin in explanation;

Figure 26 is the view of a similar Figure 24, explanation with this first junction bevel so that this ball switch perpendicular to the state of this horizontal plane;

Figure 27 is the view of a similar Figure 25, illustrates one second junction bevel so that this ball switch is parallel to the state of this horizontal plane.

Embodiment

Below in conjunction with accompanying drawing and preferred embodiment the ball switch that foundation the present invention proposes is elaborated.

Before the present invention is described in detail, be noted that, employed relative position term in the following description content, as " first direction X ", " second direction Y " is to be benchmark with the direction shown in each figure, and this first direction X is perpendicular to one another with this second direction Y, and similar elements is with identical label declaration.

As Fig. 4, Fig. 5, shown in Figure 7, ball switch one first preferred embodiment of the present invention comprises a housing 30, a ball 40, a lid 50 and two-terminal unit 60.

This housing 30 is made with plastic cement, comprises a basal wall 31 that extends along this first direction X, four continuous sidewalls 32 extending along this second direction Y of the periphery of this basal wall 31 certainly, and run through four jacks 33 of this basal wall 31 and space along this second direction Y.This basal wall 31 defines the opening 35 that a room 34 and is in reverse to this basal wall 31 with these 32 common cooperations of sidewall.

Each jack 33 is by a square opening that forms that four continuous hole walls 331 cooperate.

This ball 40 is positioned at this room 34 and can conducts electricity.

This lid 50 is set mutually with described sidewall 32 and is combined this opening 35 of capping simultaneously, so that this ball 40 is limited in this room 34.

Each terminal unit 60 respectively comprises a contiguous block 61, and from this contiguous block 61 along this second direction Y extend and the space in order to insert two terminals 62 of corresponding two jacks 33.

This contiguous block 61 has a conflict face 611 that extends along this first direction X, one is in reverse to one first junction 612 of this conflict face 611 and space, and connects one second junction 613 and one the 3rd junction 614 of this conflict face 611 and this first junction 612 along this second direction Y.And the distance between this second junction 613 and the 3rd junction 614 is more than or equal to the distance between two sidewalls 32 of this housing 30.

In this preferred embodiment, this first junction 612 has a recess and is non-flat to be faced directly, has to make things convenient for the production controller to watch scolding tin result's effect.

Each terminal 62 respectively has one and extends insertion section 621 in order to insert this jack 33 from this conflict face 611 along this second direction Y, one is positioned at built-in section 622 of this room 34, and is arranged at least one Access Division 623 that this insertion section 621 is also faced described hole wall 331.This Access Division 623 can be groove design, also can be as shown in figure 16 be projection design.

What deserves to be explained is, in the present invention, this terminal unit 60 is adopted the punch forming mode and is made, the dimensions of prepared each terminal unit 60 is all identical, when two terminals 62 powerful insertions corresponding two jacks 33 of the instrument of use (figure does not show) with this terminal unit 60, touch this basal wall 31 up to this conflict face 611, just the assembling of this terminal unit 60 and this housing 30 has been finished in expression, not only assembling is quite convenient, and can be easy, two terminals 62 controlling this terminal unit 60 accurately stretch into the length in this room 33, the concordant degree of just described terminal 62.

Assembled when this ball switch and to have finished, as shown in Figure 5, the user can carry out the scolding tin operation and adopt surface adhering technology (Surface Mount Technology) that this first junction 612 is fixed in a circuit board 100 according to user demand, after winding was finished, this ball switch was perpendicular to this circuit board 100.

As shown in Figure 6, the user also can adopt the surface adhering technology that this second junction 613 or the 3rd junction 614 are fixed in this circuit board 100 according to user demand, and after winding was finished, this ball switch was parallel to this circuit board 100.

In view of the above as can be known, ball switch of the present invention has the characteristic that the user can select this first junction 612 or this second junction 613 or the 3rd junction 614 are fixed in this circuit board 100 according to user demand, that is to say that ball switch of the present invention can meet the user demand on user's the different directions, can simplify processing procedure relatively and can reduce production costs, and when carrying out the scolding tin operation, this housing 30 can make this hole wall 331 correspond to the part distortion and then the mutual holding (see figure 7) of this Access Division 623 because of high temperature deformation, can effectively strengthen the firm effect of described terminal 62 relatively.

During use, as Fig. 7, shown in Figure 8, when this circuit board 100 is parallel to a horizontal plane I, then this ball 40 falls to putting automatically and contacts built-in section 622 of described terminal 62, and then makes this ball switch maintain a conducting state.

As Fig. 9, shown in Figure 10, when this circuit board 100 favours this horizontal plane I or is given a shock, then this ball 40 will move and break away from built-in section 622 of described terminal 62, and then make this ball switch maintain a nonconducting state.

As shown in figure 11, preferably, this terminal unit 60 also comprises a pin 63 that extends along this first direction X from this second junction 613 or the 3rd junction 614, so, as shown in figure 12, the user can adopt the surface adhering technology that this first junction 612 is fixed in this circuit board 100 according to user demand, as shown in figure 13, the user can insert this pin 63 jack 101 of this circuit board 100 according to user demand, touch this circuit board 100 up to this second junction 613, carry out the scolding tin operation again this pin 63 is welded in this circuit board 100.

What deserves to be explained is, above-mentionedly touch face 611 with this first junction 612 and this and be parallel to each other and describe, as shown in figure 14, but when this circuit board 100 is installed on an electronic product (figure does not show) obliquely, when just having an angle theta between this circuit board 100 and this horizontal plane I, can be when this terminal unit 60 of punching out, this first junction 612 is made non-parallel in the relative inclined-plane that is formed with identical angle theta between the two of this conflict face 611, so, when this first junction 612 is fixed in this circuit board 100, just can make this ball switch perpendicular to this horizontal plane I.As shown in figure 15, also this second junction 613 can be made inclined-plane non-perpendicular to this conflict face 611, so, when the jack 101 that this pin 63 is inserted this circuit board 100, touch this circuit board 100 up to this second junction 613, then this lid 50, this housing 30 touch this circuit board 100 simultaneously and can form a strong point, carry out the scolding tin operation again this pin 63 is welded in this circuit board 100, just can make this ball switch be parallel to this horizontal plane I.

In addition, as shown in figure 17, the two-terminal 62 of this terminal unit 60 can be arranged to different length, to satisfy different user demands.

As Figure 18, Figure 19, shown in Figure 20, ball switch one second preferred embodiment of the present invention comprises a pedestal 70, a lid 80, two-terminal unit 90 and a ball 40.

This pedestal 70 comprises a basal wall 71 along this first direction X extension, four continuous sidewalls 72 that extend along this second direction Y from the periphery of this basal wall 71, reach four jacks 73 that run through this basal wall 71 and space along this second direction Y, this basal wall 71 defines one first room 74 with described 72 common cooperations of sidewall.

Each jack 73 is cooperated by four continuous hole walls 731 to form.

This lid 80 has a roof 81, and extend and to be nested with four continuous sidewalls 72 at this pedestal 70 outer and set four sidewalls 82 of combination mutually along this second direction Y from the periphery of this roof 81, this roof 81 defines one second room 83 with described 82 common cooperations of sidewall.

Each terminal unit 90 respectively comprises a contiguous block 91, extend and two of space install piece 92 along this second direction Y from an end face 911 of this contiguous block 91, and extend in order to insert two terminals 93 of corresponding two jacks 73 along this second direction Y undergauge from the described piece 92 that installs.This installs two shoulders 94 of common parallel this first direction X of formation of piece 92 and these terminal 93 intersections.

This contiguous block 91 has this end face 911 and one first junction 912 that is reverse, and connects one second junction 913 and one the 3rd junction 914 of this conflict face 911 and this first junction 912.And the distance between this second junction 913 and the 3rd junction 914 is more than or equal to the distance between two sidewalls 82 of this lid 80.

Each terminal 93 respectively has one and installs piece 92 from this and extend insertion section 931 in order to insert this jack 83, one is positioned at built-in section 932 of this first room 74, and be arranged at this insertion section 931 and in the face of at least one Access Division 933 of described hole wall 731, this Access Division 933 can be groove, also can be projection.

When first room 74 of this ball 40 being inserted this pedestal 70, again these lid 80 lids are put outside this pedestal 70, this ball 40 will be limited in the enclosure space of being made up of this second room 83 and this first room 74, use two terminals 93 powerful insert in corresponding two jacks 73 of an instrument (figure does not show) then with this terminal unit 90, touch this basal wall 71 up to described shoulder 94, just can finish the assembling of this terminal unit 90 and this pedestal 70, at last, resin can be injected between this lid 80 and this pedestal 70 and this terminal unit 90, behind this resin solidification, can form a sealant 110, make ball switch of the present invention have splendid sealing.

Identical with first preferred embodiment, the user can select to adopt the surface adhering technology to be fixed in this circuit board 100 first junction 912 of this terminal unit 90 or second junction 913 or the 3rd junction 914 according to user demand.

As shown in figure 20, make this ball switch perpendicular to this circuit board 100 when this first junction 912 being fixed in this circuit board 100, and this circuit board 100 is parallel to a horizontal plane I, then built-in section 932 of the described terminal 93 of these ball 40 contacts, and then make this ball switch maintain a conducting state.

As shown in figure 21, when this circuit board 100 favours this horizontal plane I or is given a shock, then this ball 40 moves and breaks away from built-in section 932 of described terminal 93, and then makes this ball switch maintain a nonconducting state.

As Figure 22, shown in Figure 23, preferably, this terminal unit 90 also comprises a pin 95 that extends along this first direction X from this second junction 913 or the 3rd junction 914, so, as shown in figure 24, the user can adopt the surface adhering technology that this first junction 912 is fixed in this circuit board 100 according to user demand, as shown in figure 25, the user can carry out the scolding tin operation this pin 95 is welded in this circuit board 100 according to the jack 101 of user demand with these pin 95 these circuit boards 100 of insertion again.

In addition, as shown in figure 26, when this circuit board 100 is installed on an electronic product (figure does not show) obliquely, when just having an angle theta between this circuit board 100 and this horizontal plane I, can be when this terminal unit 90 of punching out, this first junction 912 is made non-parallel in the relative inclined-plane that is formed with identical angle theta between the two of described shoulder 94, so, when this first junction 912 is fixed in this circuit board 100, just can make this ball switch perpendicular to this horizontal plane I.As shown in figure 27, also this second junction 913 can be made inclined-plane non-perpendicular to described shoulder 94, so, when the jack 101 that this pin 95 is inserted this circuit board 100, touch this circuit board 100 up to this second junction 913, then this lid 80 touches this circuit board 100 simultaneously and can form a strong point, carries out the scolding tin operation again this pin 95 is welded in this circuit board 100, just can make this ball switch be parallel to this horizontal plane I.

In sum, ball switch of the present invention has effect as described below and advantage, so can reach the object of the invention really:

One, because the present invention can be by described terminal unit 60,90 first junction 612,912 or second junction 613,913 or the 3rd junction 614,914 or pin 63,95 be fixed in described circuit board 100, can meet the characteristic that different user demands directly are fixed in described circuit board 100 so have, have relatively and can simplify processing procedure, the effect that can reduce production costs and advantage.

Two, because terminal unit 60 of the present invention comprises a contiguous block 61 and two terminals 62 that extend along described second direction Y from the conflict face 611 of described contiguous block 61, so when assembling, only need two terminals 62 powerful two jacks 33 inserting described housing 30 of tool using with described terminal unit 60, touch described basal wall 31 up to described conflict face 611, just can finish the assembling of described terminal unit 60 and described housing 30, not only assembling is quite convenient, and has and can be easier to, accurately the described terminal 62 of control stretches into the length in the described room 33, the effect of concordant degree and advantage.

Three, because terminal unit 90 of the present invention comprises a contiguous block 91, two from described contiguous block 91 along described second direction Y extension install piece 92, and from described two terminals 93 that install the extension of piece 92 undergauges, so when assembling, only need two terminals 93 powerful two jacks 73 inserting described pedestal 70 of tool using with described terminal unit 90, a plurality of shoulders 94 up to described terminal unit 90 touch described basal wall 71, just can finish the assembling of described terminal unit 90 and described pedestal 70, not only assembling is quite convenient, and has and can be easier to, accurately the described terminal 93 of control stretches into the length in described first room 74, the effect of concordant degree and advantage.

Four, because the insertion section 621,931 of terminal 62,93 of the present invention is provided with Access Division 623,933, then in carrying out the scolding tin operation process, described housing 30 or described pedestal 70 are because of high temperature deformation, just can make described hole wall 331,731 produce distortion with respect to the part of described Access Division 623,933, and then mutual holding combination is to strengthen bond strength, the present invention is had the effect and the advantage that can effectively improve described terminal 62,93 firm effects.

Claims (10)

1. ball switch, be fixed in a circuit board in order to the conversion signal, described ball switch comprises a housing and a lid that is nested with combination mutually, and one is positioned at the ball of described housing and described lid, and be inserted in two terminal units of described housing, it is characterized in that:

Described housing comprises a basal wall along first direction extension, from the periphery of described basal wall along a plurality of sidewalls that link to each other that extend with the vertical second direction of described first direction, and running through four jacks of described basal wall and space along described second direction, described basal wall cooperates jointly with described sidewall and defines the opening that a room and is in reverse to basal wall;

Described ball is positioned at described room and can conducts electricity;

Described lid is limited in the described room described ball in order to the described opening of capping;

Each terminal unit comprises a contiguous block respectively, and from described contiguous block along described second direction extend and the space in order to insert corresponding two jacks and to stretch into two terminals in the described room, described contiguous block has a conflict face that extends and touch described basal wall along described first direction, one is in reverse to first junction of described conflict face and space, and connects one second junction, one the 3rd junction of described conflict face and described first junction.

2. ball switch according to claim 1 is characterized in that:

Described terminal unit also comprises a pin that extends along described first direction from described second junction.

3. ball switch according to claim 1 is characterized in that:

Described housing is made with plastic cement, described jack is cooperated by four continuous hole walls to form, described terminal has one and extends and insert insertion section in the described jack from described conflict face, one is positioned at built-in section of described room, and at least one Access Division that is arranged at described insertion section and combines with the mutual holding of described hole wall.

4. ball switch according to claim 2 is characterized in that:

Described first junction is one non-parallel in the inclined-plane of described conflict face, and described first junction is fixed in described circuit board, and described ball switch is perpendicular to a horizontal plane.

5. ball switch according to claim 2 is characterized in that:

Described second junction is an inclined-plane non-perpendicular to described conflict face, and described pin is fixed in described circuit board, and described ball switch is parallel to a horizontal plane.

6. ball switch, be fixed in a circuit board in order to the conversion signal, described ball switch comprises a pedestal and a lid that is nested with combination mutually, and one is installed in the ball in described pedestal and the described lid, and be inserted in two terminal units of described pedestal, it is characterized in that:

Described pedestal comprises a basal wall along first direction extension, from the periphery of described basal wall along a plurality of sidewalls that link to each other that extend with the vertical second direction of described first direction, and running through four jacks of described basal wall and space along described second direction, described basal wall cooperates jointly with described sidewall and defines one first room;

Described ball can conduct electricity;

Described lid comprises a roof, and extend along described second direction from the periphery of described roof and to link to each other and be nested with a plurality of sidewalls outside the sidewall at described pedestal, described roof cooperates jointly with described sidewall and defines one second room, and described second room cooperates jointly with described first room and forms one in order to be installed in the enclosure space of described ball;

Each terminal unit comprises a contiguous block respectively, two from described contiguous block along described second direction extension and space install piece, and extend in order to insert corresponding two jacks and to stretch into two terminals in the described room along described second direction undergauge from the described piece that installs, describedly install common formation of piece and described terminal intersection and be parallel to two shoulders of described first direction in order to the described basal wall of conflicting, described contiguous block has an end face and one first junction that is reverse, and connects one second junction of described end face and described first junction, one the 3rd junction.

7. ball switch according to claim 6 is characterized in that:

Described terminal unit also comprises the pin that extends along described first direction from described second junction.

8. ball switch according to claim 6 is characterized in that:

Described pedestal is made with plastic cement, described jack is cooperated by continuous four hole walls to form, described terminal has one from the described insertion section that installs the piece extension and insert described jack, one is positioned at built-in section of described first room, and at least one Access Division that is arranged at described insertion section and combines with the mutual holding of described hole wall.

9. ball switch according to claim 7 is characterized in that:

Described first junction is one non-parallel in the inclined-plane of described conflict face, and described first junction is fixed in described circuit board, and described ball switch is perpendicular to a horizontal plane.

10. ball switch according to claim 7 is characterized in that:

Described second junction is an inclined-plane non-perpendicular to described shoulder, and described pin is fixed in described circuit board, and described ball switch is parallel to a horizontal plane.

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