DE6935736U - PLUGS FOR ANTENNA ELEMENTS OR ANTENNA SUPPORT TUBES - Google Patents

Description

10 15

Sealing plug for antenna element or antenna support tubes

The innovation relates to a sealing plug for the open ends of tubular antenna elements or antenna support tubes.

It is known to close the open ends of tubular Use antenna elements or antenna support tubes plugs made of plastic to prevent the ingress of moisture and to prevent water in the pipes and the whistling of the wind on the free edges of the open pipe ends.

The be.- imvcen stopper c.i mostly consist of stiff Volli;: ·: ccril, r; jnd ooi: üt not elastically deformable and white the same cross-sectional shape as the pipe. You can :, therefore only for pipes of certain cross-sectional shapes and defined wall thicknesses can be used. As a consequence. the same:;!; relatively minor for the wall thickness different pipe ends different designs of closure toufs are required-

A slotted stopper is also known, which can be actuated by means of a screw Wedge can be widened somewhat and can bridge different wall thicknesses to a small extent. at this known arrangement, however, becomes too great an expense

25 causes »

The object of the innovation is to provide a sealing plug for tubular antenna elements or antenna carriers

PA 9/442/16 HB / May

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To create pipes that are as simple as possible and without impairing a tight fit in the pipe ends can bridge different wall thicknesses and pipe tolerances.

According to the innovation, which relates to a stopper of the type mentioned, these requirements are fulfilled in that the in the open ends of the antenna elements or antenna support tubes insertable region of the closure plug made of elastic material approximately ring-shaped in the longitudinal direction of the stopper, preferably thin-walled part is formed, and that the outer width of the annular part is chosen to be slightly larger is the clear inside width of the open ends of the antenna elements or antenna support tubes. Because the is a hollow, elastically deformable part in the region of the elastic sealing plug that can be introduced into the open ends and its original outside width is chosen to be slightly larger, old the clear inside width of the open pipe ends, that will be ring-shaped part when inserted into the open ends according to the different inner width at different Pipes compressed differently. This allows different pipe wall thicknesses and profile pipe tolerances to a certain extent Scope to be balanced. A tight fit of the plug in the pipe ends due to the elasticity of the Material and the preload with which the ring-shaped part is accommodated in the pipe ends is always guaranteed »In addition Such a sealing plug is simply constructed and can be adapted to the respective conditions without tools »

The sealing plug advantageously consists of a plastic injection-molded part, preferably of polyethylene. at Using polyethylene, the modulus of elasticity of the material is expediently chosen so that the material

69 ovtÖO

is not too flexible and not too stiff. For this purpose, a medium-density polyethylene or, in the case of a particularly thin-walled ring-shaped part, a high-density polyethylene can come into consideration. A less elastic Mp.oorial, that such a high modulus _s is one vorteilhal'terv / use EIOC with thin-walled annular parts, while a high elastic material? So one with a lower modulus of elasticity, in the case of thick-walled ones

annular parts is chosen.
10

The compression of the ring-shaped part is achieved during insertion facilitated by the fact that on the one hand the annular part is rounded at its free end and on the other hand at the approach of the annular part on the protruding from the open end of the antenna element or the antenna support tube A constriction is provided for the collar of the stopper. In a preferred embodiment of the innovation here is the annular part is closed at its free end on the end face of the sealing plug

20th

The sealing plug can be used primarily for all square and rectangular profile tubes and has for this purpose an annular part with a - viewed in cross section - rectangular shape. Such sealing plugs can also be used for other tubes, e.g. circular profile tubes.

For approximately circular profile tubes, however, an annular part with an - viewed in cross section - etv / a is preferably used circular shape used »

An embodiment of the innovation and further details are described in more detail with reference to drawings =

FIGS. 1 and 2 show the sealing plug according to the invention for the open ends of tubular antenna elements

6f \ <* | g * > -j fcj / a

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or antenna support tubes in a side view or ο in one Top view.

The closure stop 1 is made of elastic material and is made of a plastic injection-molded part made of polyethylene. It is preferred to use a medium-density polyethylene, i.e. a material that is neither too flexible nor too rigid. The stopper 1 has a collar 2 which, in the inserted state of the stopper, rests against the end face of the tubular body to be closed and closes the end face f. The in the open ends of tubular antei. The region of the stopper which can be inserted into elements or antenna support tubes is formed by a thin-walled part 3 which is approximately ring-shaped in the longitudinal direction of the stopper and which is hereinafter referred to as a ring for the sake of simplicity. The outside width of the ring 3, ie the outside dimension that the ring has before insertion, is selected to be somewhat larger than the clear inside width of the open ends of the corresponding antenna elements or antenna support rails. The wall thickness a of the ring 3 is here about half as large as the clear inner width b of the ring 3. The one in Pig. 2 visible width of the ring corresponds to eow, the inside width of the pipe end to be closed;:. The ring is expediently closed at its free end on the end face of the sealing plug. In addition, the ring 3 is rounded at its free end, while a constriction 4 is provided at the base of the ring on the collar 2 of the 3 sealing plug 1 protruding from the open end of the antenna element or antenna support tube provided with lugs 7 and 3, which further improve the fit of the plug. Purely square or rectangular profile tubes, the ring of the stopper - viewed in cross section - has a rectangular shape.

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Section viewed - cine are approximately circular in shape,

Look the Pig. 3a "to 3c is now the assembly of the sealing plug 1 explained. Fig. 3a shows a side view of the plug 1 again in the unformed state of the Ring 3 before assembly. Before inserting the stopper the ring 3 is inserted into the open end of the pipe (Fig. 31>) Usually in the middle in a straight line, i.e. across to the longitudinal direction of the ring, by hand slightly so a-10 pressed so that it is slightly arched inwards. When the ring 3 is pressed together, four light ones are created Curvatures 9j 10 and 11, 12, which as a result of the constriction 4 formed easily and by itself on the collar 2 of the plug 1 and the rounding on the closed end face will. The ring 3 is expediently compressed to such an extent that its outer surface is in the one shown in FIG. 3b Condition is smaller than the clear inside width of the pipe end to be closed. The compressed ring 3 leaves insert yourself more easily into the pipe end and then springs up again so that it is held in the pipe under pretension. The ring 3 compressed in this way is now, as shown in more detail in Figo 3c, correspondingly far into the profile tube '13 bushed and then pushed all the way into the pipe,

4 and 5, the plug 1 is shown in the inserted state with cut pipe ends. The inwardly arched ring 3 rests on four studs 9, 10 and 11, 12 on the inner wall of the respective pipe 13 or 14 with a tight fit topfcns 1 compressed differently. In Fig. '· 1d ^j : uer ring ' ·) press n ^ u together only very slightly and through ^ c-wüj-ut. In the event that the clear inside width etv / u de :; Outer dimensions of the Rin ^ · ^ corresponds to this without Durciuvelbun ^ almost in the verf orr.t '..inter Press it "·

PA 9/442/16

in the end of the pipe gohalbon. In Figure "5, however, the ring 3 _5" is conditioned 14 _S somewhat more compressed by the tube 15 against the larger Wanddickc of the tube.

Because the area of the sealing plug inserted into the pipe end hollow - here vortoilhaftorv / cisc is in the form of a ring, consists of an elastic suitable material and in the unpreformed state is larger than the opening of the profile tube to be closed, a tight fit of the sealing plug is achieved Always guaranteed even with pipe tolerances or different wall thicknesses ο

10 claims for protection
5 figures

ΡΛ 9/442/16 -7-

Claims (1)

ö C XJ. TJl "CZ et Xl SP 2? \ X O ■ ** 6 1. Sealing plugs for the open ends of tubular Antenna elements or antenna support tubes, thereby characterized in that the insertable into the open ends of the antenna elements or antenna support tubes Area of the sealing plug made of elastic material (1) of an approximately ring-shaped in the longitudinal direction of the plug (1), preferably thin-walled, part (3) is formed, and that the outer width of the annular part (3) is chosen to be slightly larger is than the inside width of the open ends of the Antenna element or antenna support tube / ο sealing plug according to claim 1, characterized in that that the annular part (3) at its free end on the end face of the sealing plug (1) is closed »^ ο sealing plug according to one of claims 1 or 2, characterized in that the annular part (3) is rounded at its free end. 4. Closure plug according to one of the preceding claims , characterized in that a constriction (4) is provided on the shoulder of the annular part (3) on the collar (2) of the closure plug (1) protruding from the open end of the antenna element or the antenna support tube » > 5c stopper according to one of the preceding claims; dad α rchg ■ _ · ke η η ζ calibrated η et - that the Ver :: ehliiios pot (1) aiu- a plastic injection-molded part; preferably from Polvä uV>'Ie: i. ordered" . ΡΛ 9/442/16 ^ <, _ ί »J fi -8- * 4 -8th- 6. Closure plug according to one of the preceding claims, characterized in that the annular part \ J>) of the VerscMußstopfens (1) - im. Cross-section viewed - has a rectangular shape = ο Sealing plug according to one of Claims 1 to 5, characterized in that the ring-shaped part (3) of the sealing plug (1) - viewed in cross section - has an approximately circular shape. , 8ο sealing plug according to one of the preceding claims, characterized in that the annular part (3) is provided with lateral lugs (7-8). y 9ο sealing plug according to one of the preceding claims, characterized in that the wall thickness of the annular part (3) is approximately half as great how the clear inside width of the ring-shaped part (3) is selected .κ-Ο. Sealing plug according to one of the preceding claims, characterized in that the Width of the annular part (3) approximately equal to the clear inner width of the open ends of the antenna elements or Antenna support tubes is selected. PA 9/442/16