RO116669B1

RO116669B1 - Device for fastening onto flat surfaces

Info

Publication number: RO116669B1
Application number: RO96-01394A
Authority: RO
Inventors: Adrian Munteanu
Original assignee: Adrian Munteanu
Priority date: 1996-07-08
Filing date: 1996-07-08
Publication date: 2001-04-30

Abstract

The invention relates to a device for fastening onto flat surfaces such as vehicle-body sheet iron, stoneware tiles or glass sheet, by means of a spherical vault suction-stiffened onto the desired surface. The claimed device comprises a sealing plug (3) integral with a rod (6) passing through a partition wall (5) and engaging some toothed wheels (7) guided by some guiding rods (8) restrained in a rubber wall (9). When the pump (10) is screwed into the cap of the spherical vault (1), the pump (10) pushes the rubber wall (9) and moves the rod (6) and the plug (3) by means of the guiding rods (8) and the toothed wheels (7), thereby compressing a spring (4) secured between the sealing plug (3) and the partition wall (5). The depression needed for fastening is obtained by pushing the piston (12) of the pump (10) in the direction of sucking the air in the spherical vault, unscrewing the pump from the body of the spherical vault, thereby releasing said spring (4) and clogging the communication opening existing between the spherical vault and the cylindrical body wherefrom the pump (10) had been removed by means of the sealing plug (3).

Description

RO 116669 BRO 116669 B

Invenția se referă la un dispozitiv de fixare pe suprafețe plane, cum ar fi table auto, plăci de faianță sau de sticlă, cu ajutorul unei cupole ce se rigidizează pe suprafața dorită.The invention relates to a fixing device on flat surfaces, such as car panels, tiles or glass, with the help of a dome that stiffens on the desired surface.

Sunt cunoscute dispozitive de fixare cu ventuză, care realizează în interiorul ventuzei presiuni mai mici decât presiunea atmosferică. Dezavantajul acestor dispozitive constă în aceea că presiunea din interiorul ventuzei nu poate fi oricât de mică. Ea este dependentă de volumul de aer dislocuit și deci forța de prindere este relativ mică.Fastening devices with a suction cup are known, which achieve pressures lower than atmospheric pressure inside the suction cup. The disadvantage of these devices is that the pressure inside the suction cup cannot be low. It is dependent on the volume of displaced air and therefore the clamping force is relatively small.

Problema tehnică, pe care o rezolvă invenția, constă în aceea că, în interiorul cupolei, se realizează o presiune foarte mică, aproape vid, cu ajutorul unei pompe ce aspiră aerul din cupolă.The technical problem, which the invention solves, consists in the fact that, inside the dome, a very low pressure, almost vacuum, is created with the help of a pump that sucks the air from the dome.

Dispozitivul de fixare, conform invenției, înlătură dezavantajele soluției tehnice cunoscute, prin aceea că este prevăzut cu o cupolă, o garnitură de etanșare și o pompă cu tijă și piston, înfiletată în corpul cupolei, pentru realizarea depresiunii de fixare. Dispozitivul are în componență un dop de etanșare solidarizat cu o tijă care trece printrun perete despărțitor și angrenează niște roți dințate, ghidate de niște tije de ghidare, fixate într-un perete de cauciuc. în momentul înfiletării pompei în corpul cupolei, pompa împinge peretele de cauciuc, deplasând tija cu dopul de etanșare, prin intermediul tijelor de ghidare și al roților dințate, comprimând un arc fixat între dopul de etanșare și peretele despărțitor, asigurându-se astfel comunicarea dintre cupolă și pompă.The fixing device, according to the invention, removes the disadvantages of the known technical solution, in that it is provided with a dome, a sealing gasket and a pump with rod and piston, threaded into the body of the dome, to achieve the fixing depression. The device consists of a sealing plug solidarized with a rod that passes through the partition wall and engages some gears, guided by some guide rods, fixed in a rubber wall. when the pump is threaded into the dome body, the pump pushes the rubber wall, moving the rod with the sealing plug, through the guide rods and gears, compressing a spring fixed between the sealing plug and the partition wall, thus ensuring communication between the dome and pump.

în scopul realizării depresiunii necesare fixării, se deplasează pistonul pompei, în sensul aspirației aerului din cupolă, apoi se deșurubează pompa de corpul cupolei. Peretele de cauciuc se află în permanent contact cu corpul pompei, pe tot parcursul deșurubării, contactul fiind asigurat de destinderea arcului menționat. Deplasarea peretelui de cauciuc asigură închiderea, prin intermediul tijelor și al roților dințate, a dopului de etanșare și astuparea orificiului de comunicare dintre cupolă și corpul cilindric, din care s-a deșurubat pompa.in order to achieve the depression necessary for fixing, move the pump piston in the direction of air suction from the dome, then unscrew the pump from the dome body. The rubber wall is in permanent contact with the pump body, throughout the unscrewing, the contact being ensured by the expansion of the mentioned spring. The movement of the rubber wall ensures the closure, by means of the rods and gears, of the sealing plug and the plugging of the communication hole between the dome and the cylindrical body, from which the pump was unscrewed.

Invenția prezintă avantajul realizării unei forțe de prindere relativ mari.The invention has the advantage of achieving a relatively high clamping force.

Se dă, în continuare, un exemplu de realizare a invenției, în conformitate și cu fig. 1 și 2 care reprezintă:An example of an embodiment of the invention is given below, also in accordance with fig. 1 and 2 which represent:

- fig. 1, secțiune axială prin dispozitivul de fixare în poziția de montaj;- fig. 1, axial section through the fixture in the mounting position;

-fig. 2, secțiune axială prin dispozitivul de fixare în poziția de lucru.-fig. 2, axial section through the fixture in the working position.

Dispozitivul conform invenției este alcătuit dintr-o cupolă 1 care este prevăzută, la margine, cu o garnitură de cauciuc 2. Dispozitivul mai este prevăzut cu un dop de etanșare 3, un arc 4, un perete despărțitor 5 prin care trece o tijă 6 care angrenează niște roți dințate 7. Roțile dințate 7 sunt antrenate în mișcare de rotație, de niște tije de ghidare 8, care sunt solidare cu un perete de cauciuc 9. Roțile 7 amintite sunt fixate de corpul cilindric aflat în prelungirea cupolei 1, prin niște brațe de prindere 11. De prelungirea cilindrică a cupolei 1, se asamblează, prin filet, o pompă 10. Pompa este prevăzută cu un piston 12, o tijă filetată 13 și un mâner 14. La montaj, pompa IO se înfiletează în corpul cilindric al cupolei, deplasându-se de la dreapta spre stânga și împingând peretele de cauciuc 9 și tijele de ghidare 8. Prin deplasarea tijelor 8 înspre stânga sunt puse în mișcare roțile dințate 7, fapt ce duce la deplasarea tijei 6 și, implicit, a dopului de etanșare 3 de la stânga la dreapta, asigurându-se astfel comunicarea între cupolă și pompă, prin deschiderea locașului dopului 3.The device according to the invention consists of a dome 1 which is provided, at the edge, with a rubber gasket 2. The device is also provided with a sealing plug 3, a spring 4, a partition wall 5 through which a rod 6 passes which gears some gear wheels 7. The gear wheels 7 are driven in rotation by some guide rods 8, which are integral with a rubber wall 9. The mentioned wheels 7 are fixed to the cylindrical body located in the extension of the dome 1, by means of some arms clamp 11. A pump 10 is assembled by threading the cylindrical extension of the dome 1. The pump is equipped with a piston 12, a threaded rod 13 and a handle 14. During assembly, the IO pump is threaded into the cylindrical body of the dome , moving from right to left and pushing the rubber wall 9 and the guide rods 8. By moving the rods 8 to the left, the gears 7 are set in motion, which leads to the displacement of the rod 6 and, implicitly, the sealing plug 3 from the stable ga to the right, thus ensuring communication between the dome and the pump, by opening the plug housing 3.

Claims

RO 116669 B at this moment the spring 4 is compressed and the device is mounted, and the dome 45 1 is attached to the plate to be fixed. To fix it, turn the handle 14, which is integral with the threaded rod 13 of the pump, in the direction of the movement of the piston 12 to the right, thus sucking in the air from the dome. Throughout the suction, the spring 4 remains compressed, the plug 3 raised, and the wall 9 in permanent contact with the pump 10, to ensure tightness. When the piston 12 has reached the end of the stroke, the pump body 50 is unscrewed, which allows the spring 4 to expand and press the plug 3 in its seat. The permanent sealing during the unscrewing of the pump from the cylindrical body of the dome is ensured with the help of the spring 4, which by means of the plug 3, the rod 6, the gears 7 and the guide rods 8 keeps the rubber wall 9 pressed, permanently, on the body the pump. The wall 9 will be in permanent contact with the body 55 of the pump 10 both during the screwing and unscrewing operation of the pump, ensuring, with its movement to the left, respectively to the right, the unclogging, respectively the plugging of the communication hole between the dome and pump. In the clamping and fixing dome, very low pressures, near vacuum, can be achieved by using a large volume pump or by repeatedly using the maneuver with a small size pump 60. demand

1. Fixing device on flat surfaces, equipped with a dome, a 65 sealing gasket and a pump with rod and piston, threaded into the body of the dome, for achieving the depression of fixation, characterized by the fact that it has, in its composition, a plug of seal (3), solidarized with a rod (6) that passes through a partition wall [5] and engages some gears [7], guided by some guide rods (8], fixed in a rubber wall (9 ), and at the moment of threading the pump (10) into the body of the dome (1), the pump 70 pushes the rubber wall (9), moving the rod [6] and the plug (3) by means of the guide rods (8) and gears ( 7), compressing a spring [4] fixed between the sealing plug (3) and the partition wall [5), thus ensuring communication between the dome and the pump.

2. Device according to claim 1, characterized in that, in order to achieve the depression necessary for fixing, the piston (12) of the pump (10) is moved in the direction 75 of air suction from the dome, then the pump is unscrewed from the body of the dome, the rubber wall ( 9) being in permanent contact with the pump body throughout the unscrewing, the contact being ensured by the expansion of the mentioned spring (4), the movement of the rubber wall (9) ensuring closure, by means of the rods (8 and 6) and the gears ( 7], of the sealing plug (3] and plugging the communication hole between the dome so and the cylindrical body from which the pump (10) was unscrewed.

The president of the examination committee: Eng. Cârstea Constantin

Examiner: Eng. Rusanu Irina