DE102004047109A1 - Plug for housing of electronic unit has through-openings at top side in tubular extension with a peripheral wall which has outside and inside diameter whereby outside diameter of wall can be decreased - Google Patents

Abstract

The plug (10) has through-openings (12) at the top side (10a) in tubular extension (20) with a peripheral wall (22). Peripheral wall has an inside diameter (dUi) and an outside diameter (dUa1,dUa2,dUa3). The plug has an medium (30) by which outside diameter of the peripheral wall can be decreased. An independent claim is also included for the electrolytic capacitor.

Description

The The invention relates to a plug for a housing of an electronic component, in particular an electrolytic capacitor according to the preamble of the claim 1 and provided with such a plug electrolytic capacitor.

Known are plugs for closing of substantially cup-shaped housings for electronic Components, in particular for Electrolytic capacitors, which consist of a substantially round disc exist, the at least one passage opening for carrying out the connections the electronic component, in particular the electrolytic capacitor, exhibit. The outer diameter the connections of the electrolytic capacitor is slightly larger than the inner diameter the passage openings of the plug, so when inserting the connections in the passage opening the deformable plug bears against the surface of the connection, whereby a sealing of the through holes are granted should.

The Stoppers are out of one slightly deformable plastic, in particular made of rubber and are inserted into the opening to be closed. To the case seal, for example so that no electrolyte fluid out of the case can escape, the housing becomes along the outer circumference compressed the plug.

adversely in the known plug is that when compressing the housing a uneven pressure on the individual passage openings acts, so leaks along the through holes can arise.

The The object of the invention is a plug for a housing of a electronic component, in particular an electrolytic capacitor, and an electrolytic capacitor per se, in which the seal between the terminals of the electronic component, in particular of the electrolytic capacitor even after pressing the plug in the housing guaranteed is.

The The object is achieved by a stopper for a housing an electronic component, in particular an electrolytic capacitor with the characterizing features of claim 1.

advantageous Embodiments and developments of the invention are specified in the subclaims.

The Task will continue with an electrolytic capacitor according to claim 15 solved.

According to the invention at least one of the passage openings at the top of the plug in a tubular extension with a peripheral wall continued with an inner diameter and an outer diameter, wherein the plug means for reducing the outer diameter of the peripheral wall having. Will the outer diameter reduces the peripheral wall, the peripheral wall is crushed and to the through the passage opening out Pressed connection, causing improves the seal between the passage opening and the guided through the passage port becomes. By the additional Means for reducing the outer diameter, which improves the seal between the port and the port, deformations of the plug, which by the Verpressend the plug in the Ge housing an electronic component can be caused on the seal between the passage opening and the guided through the passage port is not out, so even after pasting of the plug in the housing ensures the seal between the passage opening and the connection is.

Preferably is the means to both the outer and the inner Diameter of the peripheral wall provided. As already stated, causes a reduction. the outer diameter the peripheral wall is a compression of the peripheral wall. Has a through the passage opening guided Connection one Outer diameter, which corresponds to the inner diameter of the peripheral wall or even slightly is bigger, changed the inner diameter of the peripheral wall when using the agent according to the invention not, but a reduction in the outer diameter of the peripheral wall elevated exclusively the pressure exerted by the peripheral wall on the guided through the through-hole connection. Is the outside diameter of the through the passage opening out Connection, however, less than the inner diameter of the peripheral wall, is at a reduction in the outer diameter the peripheral wall first also reduces the inner diameter of the peripheral wall, until this on the outside surface of the through the passage opening out Terminal rests, whereupon further reducing the outer diameter the peripheral wall of the pressure of the peripheral wall is increased to the terminal.

In an advantageous embodiment of Er invention, the means has at least one passage opening into which the tubular extension of the plug engages. This design of the means assures that the means applies pressure evenly from all sides around the peripheral wall to the peripheral wall to reduce the outer diameter of the passageway wall, thereby ensuring that a uniform seal along the outer periphery of the passageway through the passageway Connection takes place.

advantageously, the peripheral wall has a first one starting from the top of the plug axial region in which the outer diameter of the peripheral wall is larger as the inner diameter of the passage opening of the agent. Thereby is achieved when inserting of the tubular Extension in the passage opening the mean of the outer diameter the peripheral wall is compressed and thus reduced. Especially will be evenly pressure from all sides exerted on the peripheral wall, for a uniform seal the passage opening across from to ensure the connection.

at an advantageous embodiment of the invention, the means between a non-clamping position and a clamping position movable. In the non-clamping position of the agent is in particular, if the outer diameter of the Connection is less than the inner diameter of the passage opening, a seal between the terminal and the through hole still not guaranteed and a simple introduction of the Connection in the passage opening possible. First after the plug has been placed with the agent on the housing, wherein the connections of the electronic component or of the electrolytic capacitor the passageways guided The means from the non-clamping position in the moved clamping position, causing the seal between the connections and the passage openings by reducing the outer diameter the respective peripheral wall and thus pressing the peripheral wall reached the connection becomes.

Preferably has the peripheral wall following the first axial region a second axial region in which the outer diameter the peripheral wall is smaller than the inner diameter of the through hole of the Agent. Is the agent in this second axial region the peripheral wall, no pressure is exerted on the peripheral wall, so that the agent is in a non-clamping position. To is preferably the axial length of the second axial region greater than the height of the agent.

advantageously, has the peripheral wall following the second axial region a third axial region in which the outer diameter the peripheral wall is larger as the inner diameter of the passage opening of the agent. This axial area serves to move the means into the second axial area, in which it is in the non-clamping position, too Keep and prevent the agent from transporting the plug detached from the stopper becomes. Since usually the plugs for housings of electronic components of other manufacturers are produced than the electrolytic capacitors itself, thereby enabling to transport the stopper and the agent together, where the agent is in a non-clamping position. Only after All ingredients of the final product, the plug can on the housing be set up and then the means from the non-clamping position to the clamping position be moved.

Preferably the plug has two through holes, each one in a tubular shape Extension to be continued with a peripheral wall. So these are Stoppers especially for housings of Electrolytic capacitors suitable, which have only two terminals, suitable.

Prefers the one means has at least two passage openings whose distance the axes to each other the distance between the axes of the peripheral walls of the Through openings of the plug corresponds. This remedy can be applied to both at the same time peripheral walls the plug are placed, at the same time the seal the passage openings across from through the through holes out connections is reached.

Preferably the plug has an axial along an outer circumference Footbridge on whose height in about the axial length which corresponds to at least one peripheral wall. The axially extending The web of the plug forms the bearing surface of the plug in the housing.

Advantageously, the plug on means for increasing the inner diameter of the circumferential ridge of the plug. In this way, once the plug has been inserted into the housing, the inner diameter and thus the outer diameter of the circumferential ridge are increased and pressed against the inner wall of the housing, whereby a seal of the plug relative to the housing wall is achieved. In particular, in this type of seal, in which the plug is "increased from the inside out", no forces exerted outside of the plug, which may be the seal between the peripheral walls of the through holes and the could interfere with them passed through connections.

Preferably has the axial web from the top of the plug one first axial region in which the inner diameter of the Bridge is smaller than the outer diameter of the Agent. If then the agent is pressed in the first axial region, is the inner diameter of the web increases and thus pressure of the Plug on the housing wall applied whereby the seal between the plug and the housing wall is reached. In particular, pressure is uniform from all sides from the plug to the housing wall applied so that a uniform seal of the plug opposite the housing wall guaranteed is.

advantageously, points the axial ridge following the first axial region a second axial region in which the inner diameter the bridge is larger as the outer diameter of the agent. Is the agent in this axial region, No pressure on the inner wall of the web and thus on the housing wall applied so that the agent is in a non-clamping position. In this state lets the plug with the agent simply insert into the housing. Becomes then the means from the non-clamping position to the first shifted axial area, the seal between the plug and the housing achieved.

Preferably the means comprises an axial along the outer circumference Bridge on which the agent held in the manufacturing and in the plug can be used. In addition, this jetty lies in the clamping position of the agent on the inside of the axial extending ridge of the plug, so over a larger area pressure on the inside of the footbridge becomes.

at a preferred embodiment The invention is the means of metal, preferably of aluminum or an aluminum alloy. This will ensure that when inserting the agent in the stopper in particular in the clamping position no deformations of the agent can occur and sufficient stability guaranteed is sufficient pressure to seal the through holes across from the carried out connections and be able to exercise to seal the plug relative to the housing.

The Invention is illustrated by the in the following figures embodiment in detail explained. It shows

1 an axial section through a first embodiment of a plug with a separately arranged means,

2 an axial section through the embodiment according to 1 with the agent in a non-clamping position,

3 an axial section through the embodiment according to 1 with the agent in a clamped position,

4 an axial section through the embodiment according to 3 with the plug inserted in a housing in the installed state and

5 a perspective view of the plug according to the invention with the inventive agent from above (left) and from below (right).

The 1 to 5 each show a plug according to the invention 10 and an agent according to the invention 30 in different relative positions and views. The same parts have the same reference numbers. For a better overview, not all parts in all figures are designated by reference numerals.

1 and 2 show an axial section through the plug 10 with a top 10a and a bottom 10b , The stopper 10 has a substantially circular outer periphery and is made of a slightly deformable material, for example made of rubber.

The stopper 10 has two through holes parallel to its axis 12 on top of that 10a of the plug 10 each in a tubular extension 20 which is substantially perpendicular to the top 10a of the plug 10 extends, continue. The tubular extension 20 the two through holes 12 has a peripheral wall 22 with an inner diameter d _Ui and an axial length l _U on. Through the passage openings 12 will ever be a connection 50 a non-illustrated electrolytic capacitor out (see 3 and 4 ). The connections 50 have an outer diameter d _Aa , which is slightly smaller than the inner diameter d _{Ui of} the peripheral walls 22 is, so the connections 50 easy in the through holes 12 can be introduced.

The perimeter walls 22 the two through holes 12 pointing away from the top 10a of the plug 10 a first axial region 25 with an axial length l _U1 and an outer diameter d _Ua1 . At the first axial area 25 closes a second axial area 26 with an axial length l _U2 and an outer diameter d _Ua2 , which is smaller than the Au ßendurchmesser d _{Ua1 of} the first axial region 25 is. To the second axial area 26 closes a third axial area 27 on which the free end of the tubular extension 20 forms and has an outer diameter d _Ua3 . The outer diameter d _{Ua3 of} the third axial region 27 is in turn larger than the outer diameter d _{Ua2 of} the second axial region 26 and corresponds approximately to the outer diameter d _{Ua1 of} the first axial region 25 , In this way, in the second axial region 26 an outer peripheral side on the peripheral wall 22 circumferential groove 28 educated.

The stopper 10 has a means 30 for reducing the outer diameter of the peripheral wall 22 in at least one of the axial regions 25 . 26 . 27 on which in the in the 1 to 5 illustrated embodiments consists of a substantially circular disc with a height h _M , in which parallel to the axis of the means 30 two through holes 32 are arranged. The distance of the axes of the through holes 32 of the agent 30 corresponds to the distance between the axes of the through holes 12 of the plug 10 (see. 1 ).

The middle 30 is made of metal, for example aluminum or an aluminum alloy.

The passage openings 32 of the agent 30 have an inner diameter d _Mi which is smaller than the outer diameter d _{Ua1 of} the first axial region 25 and as the outer diameter d _{Ua3 of} the third axial region 27 which is greater than the outer diameter d _{Ua2 of} the second axial region 26 , The middle 30 can thus with slight deformation of the third axial region 27 the perimeter walls 22 the two through holes 12 of the plug 10 so on the plug 10 be placed on the two tubular extensions 20 in the through holes 32 of the agent 30 intervene and the means 30 at the level of the second axial region 26 comes to rest, with the through holes 32 of the agent 30 each in the circumferential groove 28 the tubular extensions 20 intervene (cf. 2 ). For this purpose, in particular the length l _{U2 of} the second axial region 26 at least as great as the height h _{M of} the agent 30 ,

Is the agent located? 30 at the level of the second axial region 26 , is from the agent 30 no pressure on the peripheral wall 22 the passage opening 12 exercised, since the inner diameter d _{Mi of} the through hole 32 of the agent 30 is greater than the outer diameter d _{Ua2 of} the second axial region 26 the peripheral wall 22 , This position of the agent 30 is defined as a non-clamping position. It is through the through openings 32 of the agent 30 projecting third axial area 27 prevents the agent 30 from the stopper 10 solves. In this position, therefore, the plug 10 with the agent 30 be transported to a place where the plug 10 with an electrolytic capacitor and a corresponding housing 40 should be composed.

To the stopper 10 including the agent 30 with the electrolytic capacitor and the housing 40 to assemble, first, the connections 50 the electrolytic capacitor, not shown, or any other electronic component through the two passage openings 12 of the plug 10 guided. Subsequently, the agent 30 from the second axial region 26 in the first axial area 25 pressed (compare 3 ). This position of the agent 30 is referred to as a stuck position. As the inner diameter d _{Mi of} the through holes 32 of the agent 30 smaller than outer diameter d _{Ua1 of} the first axial region 25 the peripheral wall 22 , the outer diameter of the peripheral wall 22 in this first axial region 25 reduced, causing a pressure of the peripheral wall 22 to the connection 50 the electrolytic capacitor and thus a sealing of the passage openings 12 opposite the connections 50 is reached.

The stopper 10 has an axial web extending along the outer circumference 15 with a height h _S , whose height h _{S is} approximately the length l _{U of} the peripheral walls 22 the tubular extensions 20 equivalent. Starting from the top 10a of the plug 10 indicates the footbridge 15 a first axial region 15a with an inner diameter d _Si1 and an axial length l _S1 , wherein the inner diameter d _{Si1 is} smaller than the outer diameter d _{Ma of} the agent 30 , At the first axial area 15a of the footbridge 15 closes a second axial area 15b with an inner diameter d _Si2 and an axial length l _S2 , wherein the inner diameter d _{Si2 is} greater than the outer diameter d _{Ma of} the agent 30 , The axial length l _{S1 of} the first axial region 15b corresponds to the axial length l _{U1 of} the first axial region 26 the perimeter walls 22 ,

Is the agent located? 30 at the level of the second axial region 15b of the footbridge 15 , is from the agent 30 no pressure on the bridge 15 of the plug 10 exercised, since the inner diameter d _{Si2 of} the web 15 is greater than the outer diameter d _{Ma of} the agent 30 , Since the axial length l _{S1 of} the first axial region 15b the axial length l _{U1 of} the first axial region 26 the perimeter walls 22 corresponds, the mean is at the same time at the level of the second axial region 15b of the web and at the level of the second axial region 26 the scope walls. This position of the agent 30 has already been defined as a non-clamping position.

For complete assembly of the plug 10 including the agent 30 with the housing 40 becomes the stopper 10 in the case 40 used, it either on a winding, not shown, of the electrolytic capacitor or on a on the inner wall of the housing 40 circumferential bead rests.

Will the agent 30 from the non-clamping position to the first axial area 15a of the web and thus simultaneously in the first axial region 25 the peripheral wall 22 pressed, is from the agent 30 because in this axial area 15a the outer diameter d _{Ma of} the agent 30 greater than the inner diameter d _{Si1 of} the web 15 is, the inner diameter d _{Si1 of} the web 15 enlarged and the footbridge 15 pushed outward. Thus, at the same time the sealing of the through holes 12 opposite to the connections passed through it 50 and the sealing of the plug 10 opposite the housing 40 achieved (cf. 3 ).

Furthermore, the means 30 also one along the outer periphery of the agent 30 extending axial web 35 with a height h _SM , which is approximately the height h _{S of} the web 15 of the plug 10 equivalent.

In 4 is the stopper 10 including the agent 30 shown in the installed state. After sealing the plug 10 against the case 40 and the passage openings 12 against the connections 50 by moving the agent 30 in the clamping position becomes the outer edge 44 of the housing 40 flared so that the outer edge 44 including the internal bridge 15 of the plug 10 is bent over and on the axial web 35 of the agent 30 rests.

The present embodiments show the connections 50 all with a circular cross-section, which in the through holes 12 in the perimeter walls 22 with likewise round cross-section of both the inner contour and the outer contour of the peripheral wall 22 be guided.

However, the invention is not limited to such embodiments of the outer contour of the terminals 50 and the inner and outer contour of the peripheral walls 22 limited. Also conceivable are connections 50 with a square or rectangular cross section or an outer contour of any polygon, which in correspondingly shaped passages 12 be guided. Also, the outer contour of the peripheral wall 22 may have any cross-sections, the corresponding means 30 is formed such that it is the outer cross section of the peripheral wall 22 reduced. For this example, the peripheral wall 22 have an outer contour, which in different axial regions, a proportional increase or decrease of the inner contour of the through holes 29 of the agent 30 represents.

10

Plug

10a

top

10b

bottom

11

Through hole (of plug)

15

web (of the plug)

15a

first axial area

15b

second axial area

20

tubular extension

22

peripheral wall

25

first axial area

26

second axial area

27

third axial area

28

groove

30

medium

32

Through hole (of means)

35

web (the agent)

38

recess

40

casing

44

outer edge

50

Connection

d _Ui

Inner diameter (the peripheral wall)

d _Ua1

outer diameter (the peripheral wall in the first axial area)

d _Ua2

outer diameter (The peripheral wall in the second axial

Area)

d _Ua3

outer diameter (The peripheral wall in the third axial

Area)

_Wed

Inner diameter (the passage opening of the means)

d _Si2

Inner diameter (the web of the plug in the first axial region)

d _Si2

Inner diameter (the web of the plug in the second axial region)

d _Aa

outer diameter (of the connection)

d _Ma

outer diameter (the agent)

l _U

Length (the Peripheral wall)

l _U1

Length (of first axial portion of the peripheral wall)

l _U2

Length (of second axial portion of the peripheral wall)

_S1

Length (of first axial portion of the plug)

l _S2

Length (of second axial region of the plug)

_hm

Height (of means)

h _S

Height (of Bridge of the plug)

h _SM

Height (of Bridge of the agent)

Claims (16)

Plug ( 10 ) for a housing ( 40 ) of an electronic component, in particular an electrolytic capacitor with a top side ( 10a ) and a bottom ( 10b ), and with at least one passage opening ( 12 ), characterized in that at least one of the passage openings ( 12 ) at the top ( 10a ) of the plug ( 10 ) in a tubular extension ( 20 ) with a peripheral wall ( 22 ) with an inner diameter (d _Ui ) and an outer diameter (d _Ua1 , d _Ua2 , d _Ua3 ) is continued, and that the plug ( 10 ) Medium ( 30 ) for reducing the outer diameter (d _Ua1 , d _Ua3 ) of the peripheral _wall ( 22 ) having. Stopper according to claim 1, characterized in that the means ( 30 ) both for reducing the outer diameter (d _Ua1 , d _Ua3 ) and the inner diameter (d _Ui ) of the peripheral wall ( 22 ) is provided. Plug according to claim 1 or 2, characterized in that the means ( 30 ) at least one passage opening ( 32 ), in which the tubular extension ( 20 ) of the plug ( 10 ) intervenes. Plug according to one of the preceding claims, characterized in that the peripheral wall ( 22 ) starting from the top ( 10a ) of the plug ( 10 ) a first axial region ( 25 ), in which the outer diameter (d _Ua1 ) of the peripheral _wall ( 22 ) is greater than the inner diameter (d _Mi ) of the passage opening ( 32 ) of the agent ( 30 ). Stopper according to one of the preceding claims, characterized in that the means ( 30 ) is displaceable between a non-clamping position and a clamping position. Plug according to claim 4 or 5, characterized in that the peripheral wall ( 22 ) following the first axial region ( 25 ) a second axial region ( 26 ), in which the outer diameter (d _Ua2 ) of the peripheral _wall ( 22 ) is smaller than the inner diameter (d _Mi ) of the passage opening ( 32 ) of the agent ( 30 ). Plug according to claim 6, characterized in that the peripheral wall ( 22 ) following the second axial region ( 26 ) a third axial region ( 27 ), in which the outer diameter (d _Ua3 ) of the peripheral _wall ( 22 ) is greater than the inner diameter (d _Mi ) of the passage opening ( 32 ) of the agent ( 30 ). Stopper according to one of the preceding claims, characterized in that the stopper ( 10 ) two passage openings ( 12 ), which in each case in a tubular extension ( 20 ) with a peripheral wall ( 22 ). Stopper according to one of the preceding claims, characterized in that the means ( 30 ) at least two through holes ( 32 ), whose distance between the axes to each other the distance of the axes of the peripheral walls ( 22 ) of the passage openings ( 12 ) of the plug ( 10 ) corresponds. Stopper according to one of the preceding claims, characterized in that the stopper ( 10 ) an axial web extending along the outer circumference ( 15 ) having an inner diameter (d _Si1 , d _Si2 ) whose height (h _S ) is approximately the axial length (l _U ) of the at least one peripheral wall ( 22 ) corresponds. Plug according to claim 10, characterized in that the plug means ( 30 ) to increase the inner diameter (d _Si1 ) of the circumferential ridge ( 15 ) having. Plug according to claim 11, characterized in that the axial web ( 15 ) starting from the top ( 10a ) of the plug ( 15 ) a first axial region ( 15a ), in which the inner diameter (d _Si1 ) of the web ( 15 ) is smaller than the outer diameter (d _Ma ) of the agent ( 30 ). Plug according to claim 13, characterized in that the axial web ( 15 ) following the first axial region ( 15a ) a second axial region ( 15b ), in which the inner diameter (d _Si2 ) of the web is greater than the outer diameter (d _Ma ) of the agent ( 30 ). Stopper according to one of the preceding claims, characterized in that the means ( 30 ) an axial web extending along the outer circumference ( 35 ) having. Stopper according to one of the preceding claims, characterized in that the means ( 30 ) made of metal, preferably made of aluminum or an aluminum alloy. Electrolytic capacitor with a cup-shaped housing ( 40 ) with a stopper ( 10 ) is closed according to one of the preceding claims.