ES2366054T3 - PROTECTION DEVICE - Google Patents

Abstract

Housing of a measuring device (46, 124, 144), such as a housing of a laser device, with a protection device that surrounds said housing as sections, where the protection device consists of a core (22, 130 , 132, 134, 136, 138, 140, 142, 146, 148) surrounding at least by way of sections the housing of the measuring device and a cover (24, 128, 150), characterized in that the core is a core of thermoplastic material that protects against impacts to the housing of the measuring device and is housed tightly by way of sections by the housing of the measuring device and because the cover is a cover that surrounds the core and protects the core from abrasion and the penetration of pointed objects and is composed of at least one material from the group of elastic materials of rubber, rubber, thermoplastic elastomeric material, ethylene propylene diene monomer (EPDM) or consists of a film that is formed from the core through heat treatment or consists of a sheet that is attached to the core or a laminated material that is on the core.

Description

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The present invention refers to a housing of a measuring device, such as the housing of a laser device, with a protective device surrounding it as sections.

A protective housing for a laser leveler is known from the application DE-U-200 21 781. The laser device is completely housed in the protective housing and consists of plastic. For the use of the laser device, the protective housing must be open and the laser device must be located on an outer surface of the protective housing.

To protect a laser device, the device housing is surrounded by a protective housing as a housing, according to the application EP-B-1 376 055. The protective housing has U-shaped metal stirrups that can be surrounded as sections by a shock absorbing plastic material.

The application US-A-6,128,326 results in a construction laser with a housing having handles that are composed of a hard plastic core and an expanded plastic cover.

An intermittent warning light, in accordance with the application DE-A-20 29 968, is surrounded by two half-shells that can fit together and can be separated as protection. Semi-helmets that are made of plastic, to slow down a slide, can have flexible rubber or soft plastic pads.

To protect a laser device, it is suggested in application JPA-2002 071 350 that the housing be surrounded by a rubber compound cap.

Application US-A-2006/0013278 refers to a laser device, the housing of which consists of hard plastic, where the device has a handle composed of a soft material.

According to the application EP-A-0 219 191, a thermoplastic material head is sealed from this housing of a laser device with respect to the device, where a pentaprism is arranged.

According to the application WO-A-98/32472, a housing surrounding an electronic measuring device is surrounded by a frame that provides protection, which has arms that extend along the housing, which are located composed, for example, of steel, aluminum, polyamide or PEEK and a cover of a flexible material.

According to US-B-6,938,350, a laser device has a frame structure that extends between annular metal composite elements. In this way, an upper annular element can be surrounded by an impact absorbing element, for example EPDM.

Application EP-A-1 507 158 results in a protective wrap for an optical device such as a telescope. The protective wrapper comprises a thermoformed plastic that is formed in such a way that at least partially envelops the optical device. Preferably, the thermoformed plastic is at least partially covered by an elastic textile material. During the use of the optical device the protective wrap can be separated from it.

The unpublished WO-A-2008/009839 application refers to a protective envelope for, among others, a laptop, and is composed of a layer of buffer polymer, surrounded by a thermoplastic polymer material with incisions to achieve greater flexibility.

It is an object of the present invention to perfect a housing of a measuring device of the kind mentioned in the introduction, so as to provide protection against impacts to a sufficient extent, while at the same time ensuring that in the case of impacts strong damage to the protective device itself is avoided.

To achieve this object, in the present invention it is essentially provided that the protection device is composed of a core that surrounds, at least as sections, the housing of the measuring device and a cover, where the core is a core of thermoplastic material that protects against impacts to the housing of the measuring device and is housed tightly by way of sections by the housing of the device

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of measurement and where the cover is a cover that surrounds the core and protects the core against abrasion and penetration of pointed objects and is composed of at least one material from the group of rubber, rubber, elastic materials thermoplastic elastomer material, ethylene propylene diene monomer (EPDM) or consists of a film that is formed from the core through heat treatment

or consists of a sheet that is attached to the core or a laminated material that is on the core. In particular, the protection device, at angles and / or edges of the housing of the measuring device, comprises support elements that are arranged spaced apart from each other, which are connected by the cover and / or are surrounded by sections by it. In this way, the cover can fix the protection device on the housing.

The core must be composed of expanded polypropylene (EPP).

Based on the disclosure according to the invention, the advantage is provided that a housing of a measuring device is provided with a protective device that allows high deformations without permanent damage. In this way, the excellent elastic behavior of the EPP and its excellent properties related to the absorption of impacts are used for the core, which can also be produced simply and cost-effectively. Unprotected thermoplastic material offers reduced resistance to abrasion and only reduced protection against the penetration of sharp objects such as stones. However, through a core coating, these disadvantages can be avoided, since the coating adapts to core deformations also in case of high forces.

It is known to use expanded polypropylene as impact protection and as an insulator, for example, for transport boxes or as packaging. However, the boxes, as well as the packaging, do not have covers. In many occasions the production of damages in the outer layer is observed. It is also known, in the case of computers, the introduction of insert plates in EPP housings. They are, therefore, surrounded by a sheet metal housing. Within the technical area related to vehicles, bumper systems composed of an EPP core that are surrounded by a stiffer plastic are implemented. In these cases the production of breaks in the case of very high loads should be considered.

The core of the protective device, as well as the protective housing, must be composed of sections that can be assembled, as well as embedded. With this, the core surrounds in a tight way, as a section, the housing of the device, as well as is fixed therein. For this, the core can have arms with cylindrical sections that start from a frame, where the cylindrical sections of the arms are accommodated tightly, as sections, by hollowed cylindrical arms of the device housing that have longitudinal grooves. In this way, the edge areas of the arms are hooked in the longitudinal grooves. Preferably, the frame has a rectangular geometry, where respectively an arm in the form of a plate should be formed. Between the arms formed in the form of plates, therefore, an element extends as a tube element or as a handle bar, such that additional protection of the device housing is obtained.

With this, the protective housing, preferably, has a parallelepiped-shaped frame like the core, with longitudinal and transverse arms, where the transverse arms form the respective frame.

Preferably, the core and the cover are parts that are manufactured separately, where the thickness of the material should be between 0.5 mm and 5 mm. In the case of protective housings determined for laser devices, the cover thicknesses of 2 mm to 3 mm are indicated as the EPDM material. The cover surrounds the core in a very tight way. For fixing the cover, it is fixed as sections between the core and the sections of the device housing, as well as fixed by tightening.

Likewise, a refinement of the invention, in the case of a use for laser devices, provides that from the frame on the upper side of the protective housing an additional piece that surrounds the laser optics of the laser device is spaced apart. In this way, the added piece should be composed of a first annular element that is attached to the upper side frame for example by means of a pressure or plug connection, and of a second annular element that is connected to it by flat souls , wherein said second element is composed of a core composed of a thermoplastic material such as EPP and a rubber composite cover such as EPDM surrounding the core.

There is also the possibility that the second annular element is composed, for example, of metal or plastic as fiber reinforced plastic, where said element, according to the disclosure according to the invention, is at least partially surrounded, namely by a core that is surrounded by a thermoplastic material, which in turn is surrounded by a cover as a wrapper. Regardless of this, the first annular element, as well as flat souls, must be composed of plastic such as fiber reinforced plastic, such as fiberglass reinforced polyamide. Flat souls and the first ring element are separate elements, where flat souls can be attached to the second ring element. This may have

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place through a pressure connection. An integral conformation of the second annular element and souls is also possible.

The first annular element is further characterized by being the housing for the laser, as well as for the laser optics, and can have a control panel.

For fixing the annular element, the flat souls are supported by sections on the first annular element which, in turn, is supported on the device housing. The extensions of the souls are designed as sleeves and have internal threads, where bolts can be screwed, as fixing bolts, which start from the base plate of the housing. The bolts, such as the fixing bolts, also pass through the passage openings of the protection device, as well as the protection housing, in particular the arms thereof, so that the same protection housing is simply fixed .

Other details, advantages and features of the present invention result not only from the claims, from the characteristics that result therefrom - in themselves or in combination - but also from the following description of a preferred embodiment example that is represented in the drawing.

The figures show:

Figure 1: a laser device surrounded by a protective housing;

Figure 2: Sections of a core of the protective housing according to Figure 1;

Figure 3: the assembled sections of the core according to figure 2;

Figure 4: a section of a protective housing that is inserted into a housing of the device;

Figure 5: the sections according to figure 2, which are attached to the housing of the device according to figure 4;

Figure 6: a segment of the protective housing according to figure 1;

Figure 7: elements of the protective housing surrounding the laser device in an exploded view;

Figure 8: another embodiment of a protective housing surrounding a device;

Figure 9: A third embodiment of a protective housing surrounding a housing; Y

Figure 10: the protective housing according to figure 9 in an exploded view.

The disclosure according to the invention is explained in Figures 1 to 7 by a protective housing 12 that surrounds a laser device 10, without this being considered a restrictive case. Rather, the disclosure according to the invention is valid for any protective housing that, preferably, should surround devices that are sensitive to impacts. Among these are in particular the measuring devices.

As regards its general aspects, the present invention refers to a protection device for a housing, where the protection device must only cross-section the housing. In this way, there is the possibility that the protection device is composed of corner elements that are supported on the vertices of the housing and that are attached to each other in the manner described below.

In the exemplary embodiment of Figures 1 to 7, the protective housing 12 is composed of a two-piece base piece 15, as well as an added piece 18 surrounding the laser output optics 20 of the laser device 10. However , the added part 18 is not an element that is required on a mandatory basis. It is also not essential that the protective housing 12 be composed of two or more pieces. Rather, the protective housing 12, in principle, can be designed in one piece.

Independently of this, however, the protective housing 12 is characterized by being composed of a core 22 and a cover 24, as shown mainly in the segment according to Figure 6. Thus, this segment represents a section of an arm of the protective housing 12. The cover 24 can thus be designed almost as a wrap around the core 22.

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According to the invention, the core 22 is composed of a thermoplastic material that has excellent properties related to shock absorption. In this regard, expanded polypropylene (EPP) should preferably be mentioned.

The cover 24 may consist of a sheet that is adhered to the core or a laminated material that is located over the core. There is also the possibility of forming the cover 24 through a heating of the core 22, such that, like the cover, a film is formed.

Preferably, the cover 24, however, is composed of a flexible rubber material such as rubber, where EPDM (ethylene propylene diene monomer) should be highlighted. In this case, the cover 24 is made separately with respect to the core 22. Whenever the cover 24, as well as the envelope, has a sufficient thickness, it is properly rigid. On the other hand, the cover 24 surrounds the core 22 in a very tight manner, in particular on the circumferential side. A fixation of the cover and with it a transformation of the core 22, takes place after the union, as well as the fixing of the protective housing on a housing of the device, as explained below.

The use of the EPDM cover 24 has the advantage that the cover 24 follows the deformation of the core 22, so that at the same time it is ensured that the core is protected against abrasion or damage caused for example by objects pointed.

In the exemplary embodiment, the protective housing 12 comprises three pieces, of which two pieces 14 and 16, which can be formed equally, form the core 22 (Figure 2). Each piece 14, 16 is composed of a frame 26, 28 with arms 30, 32, 34, 36; as well as 38, 40, 42, 44 that start from it. As shown in Figure 3, pieces 14, 16; that is to say the sections of the core 22, can be assembled, where the arms 30, 40, 32, 38, 34, 44, 36, 42, 44 are joined together in an aligned manner. The assembled parts or sections 14, 16 thus form a framework in the form of a parallelepiped that surrounds the housing of the device 46 in its entire circumference, as clearly shown in Figures 1 to 5.

A radial fixation of the pieces or sections 14, 16 in the protection housing 46 takes place by means of the arms 30, 32, 34, 36, 38, 40, 42, 44; namely, by means of the cylindrical sections that are located inside, of which some of them, by way of example, are indicated by the reference signs 48, 50. The cylindrical sections 48, 50 are associated with cylindrical housings 52 , 54 in the device housing 46, which have longitudinal grooves 56, 58 that are limited by souls 60, 62, 64, 66. Souls 60, 62, 64, 66; in this way, they engage in the recesses 68, 70, 72, 74 that delimit the cylindrical sections 48, 50.

The envelope, as well as cover 24, which surrounds the core 22, as well as the pieces or sections 14, 16, which must not be joined by adhesion of materials to the core 22, can be fixed by means of the souls 60, 62, 64 , 66 of the device housing 46, which are engaged in the recesses 68, 70, 72, 74. In other words, between the core 22 and the device housing 46, by tightening, a fixing of the cover 24 takes place. Other measures are also possible. Nor is it excluded that there is at least one bond by adhesion of materials, by way of points, between the cover 24 and the core 22.

If the radial fixation of the sections 14, 16 is carried out through cylindrical sections 48, 50 and of their engagement in the cylindrical housings 52, 54, then an axial connection takes place by means of the perforations 76, 78, 80, 82 which extend in the souls or arms 30, 32, 34, 36, 38, 40, 42, 44. These, partially, are pierced by studs 83 that can be screwed into threaded bushings. Other axial fixing options are equally possible.

Also, the representations show that respectively one arm of the frames 26, 28 is designed more flat than the remaining arms. In the exemplary embodiment these are the arms of the frame 182, 84. In the case of an assembled protective housing that surrounds the housing of the device 46 (Figure 1, Figure 4), between the flat arms 182, 84 it is fixed a handle 86, so that it should not start directly from the laser device 10, due to which additional protection against impacts is provided.

To also protect the laser output optics 20, according to the invention, the added part 18 is provided which is attached to the frame extending from the upper side, that is to the frame 28 of the upper section 16, preferably through joints Pressurized or plug connections. In this case, the added piece 18 is composed of a crown or ring 88 which is preferably composed of glass fiber reinforced plastic such as polyamide, where said ring, by means of flat souls 90, 92, 94, 96 is attached to a upper annular element 98 which is surrounded by a protective device which, according to the disclosure according to the invention, is composed of a core and a cover or envelope.

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As in particular of the exploded view according to Figure 7, the crown or ring 88 houses the output optics 100 of the laser device. The output optics 100 can be housed, as well as being surrounded, by a support which in turn is surrounded by sections of the lower ring or crown 88, being fixed through it.

The flat souls 90,92, 94, 96 that can be indicated as a base, are attached to the upper ring 98, for example through plug connections. An integral conformation can also take place. Thus, the upper ring 98 is surrounded by a core 102 which is composed of EPDM and which has an annular shape, which in turn is covered by an envelope 104 forming the cover, as shown in the representations of figure 7.

The lower ring, as well as the crown 88, also houses a control panel 106 by which the laser device can be operated.

For positioning and fixing of the lower ring 88, extensions 108, 110, 112, 114 of the souls or bases 90, 92, 94, 96 are engaged in housings 116, 118, 120 suitable as ring sleeves or of the crown 88, fulfilling the function of internal threaded bushings in which stud bolts can be screwed which in turn start from a base plate 102, as well as can be screwed thereto, where said plate closes the laser housing 46 on the side of base. For this, the base plate 122, for example, as sections, protrudes inside the housing 46 with a circumferential core and protrudes therefrom, for example with a flange-like edge, with an amplitude such that studs can be screwed into corresponding threads. Likewise, the studs go through the perforations 76, 78, 80, 82 in the souls 30, 32, 34, 36, 38, 40, 42, 44; due to which the protective housing 12 is axially secured. In this way, the protective housing 12, in the proper sense, is axially fixed between the ring or crown 88 extending from the side of the housing and presenting the control panel 106, and the base plate 122. The ring lower 88 is secured by studs between the bases or souls 90, 92, 94, 96 and the base plate

122.

As a result of a comparison of the figures, in addition, the lower frame 26 of the protective housing 12 surrounds the base plate 122 in an amplitude such that it is protected against impacts. The upper frame 28 surrounds the lower ring 88 with the control panel 106 in an amplitude such that it, as well as the panel, are in turn protected against impacts. The souls or bases 90, 92, 94, 96 extend so displaced with respect to the circumferential surface of the upper frame 28 and the protection surrounding the upper ring 98, than the first of the ends of the envelope, extended by the upper protection ring 102, 104 and the protection housing 12, extends displaced inwards.

According to the exemplary embodiment of Figures 1 to 7, the protective housing is in the form of a parallelepiped, so that, according to the invention, there is also the possibility that a housing to be protected is secured in such a way that elements of the expanded polypropylene core, designed as corner elements, are arranged at the corners of a housing, where the corner elements are joined together by bands or ribbons composed of an elastic rubber material, so that, with respect to the corner elements and bands or tapes, is a form of construction that distinguishes the protective housing according to the invention. The corner elements fulfill the function of absorbing impacts, in such a way that protection against abrasion and penetration of pointed objects is provided through the cover of elastic rubber material, such as in particular EPDM.

Other examples of execution of the disclosure according to the invention result from figures 8 to 10. Thus, in figure 8 it is shown how a housing of a measuring device 124 is surrounded by a protective housing 126 composed of a core of thermoplastic material such as expanded polypropylene (EPP), where said core is composed of corner elements 130, 132, 134, 136, 138, 140, 142. The core is surrounded and fixed by a cover 128 which, according to the disclosure according to the invention, is designed of an elastic rubber material such as rubber. The cover 128 consists of a wrap around the corner elements 130, 132, 134, 136, 138, 140, 142; but without covering the housing of the measuring device 124 in areas that must be free in relation to its operation.

The exemplary embodiment shown in Figures 9 and 10 again illustrates the fact that the protective housing according to the invention is composed of a two-piece core and a cover - also referred to as a lining or wrapper - that surrounds One piece to the core. Thus, a housing of a measuring device 144, which may again consist of a laser housing, is surrounded by sections 146, 148 in a tightly adjusted manner, which form the core of thermoplastic material. After the core 146, 148 has been placed on the housing of the measuring device 144, a wrapper or cover 150 composed of an elastic rubber material such as rubber is practically placed on the core sections 146, 148; so that, first, sections 146, 148 of the core are fixed to a sufficient extent on the housing of the measuring device 144 and, secondly, sections 146, 148 are protected against abrasion and penetration of pointed objects. The cover

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150 is composed of an elastic rubber material and is therefore expandable. In this way, the cover 150, when covering the sections 146, 148, is expandable in an amplitude such that it is possible to be placed upwards.

Reference List

10 Laser device 12 Protection housing 14 Protection housing part 15 Base part 16 Protection housing part 18 Added part 20 Laser output optics 22 Core 24 Cover 26 Frame 28 Frame 30 Arm 32 Arm 34 Arm 36 Arm 38 Arm 38 40 Arm 42 Arm 44 Arm 46 Device housing 48 Arm section 50 Arm section 52 Housing 54 Housing 56 Longitudinal groove 58 Longitudinal groove 60 Soul 62 Soul 64 Soul 66 Soul 68 Rebate 70 Rebate 72 Rebate 74 Rebate 76 Perforation 78 Perforation 80 Perforation 82 Drilling 83 Stud bolt 182 Frame arm 84 Frame arm 86 Handle 88 Ring 90 Flat soul 92 Flat soul 94 Flat soul 96 Flat soul 98 Ring 100 Exit optics 102 Core 104 Wrap 106 Control panel 108 Extension 110 Extension 112 Extension 114 Extension 116 Housing 118 Housing 120 Housing 122 Motherboard 124 Device housing 126 Protection housing 128 Cover 13 0 Element of a core

5 132 Element of a core 134 Element of a core 136 Element of a core 138 Element of a core 140 Element of a core

10 142 Element of a core 144 Device housing 146 Section of a core 148 Section of a core 150 Cover

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Claims (16)

one.

Housing of a measuring device (46, 124, 144), such as a housing of a laser device, with a protection device that surrounds said housing as sections, where the protection device consists of a core (22, 130 , 132, 134, 136, 138, 140, 142, 146, 148) surrounding at least by way of sections the housing of the measuring device and a cover (24, 128, 150), characterized in that the core is a core of thermoplastic material that protects against impacts to the housing of the measuring device and is housed tightly by way of sections by the housing of the measuring device and because the cover is a cover that surrounds the core and protects the core from abrasion and the penetration of pointed objects and is composed of at least one material from the group of elastic materials of rubber, rubber, thermoplastic elastomeric material, ethylene propylene diene monomer (EPDM) or consists of a film that is formed from the core through heat treatment or consists of a sheet that is attached to the core or a laminated material that is on the core.

2.

Housing of a measuring device according to claim 1, characterized in that as the core, the protective device, at angles and / or edges of the housing of the measuring device (46, 124, 144), it comprises support elements (130 , 132, 134, 136, 138, 140, 142, 146, 148) that are arranged spaced apart from each other, which are joined by the cover (128) and / or are surrounded by sections by the same.

3.

Housing of a measuring device according to claim 1 or 2, characterized in that the cover (150) fixes the core (146, 148) on the housing of the measuring device (46, 124, 144).

Four.

Housing of a measuring device according to at least one of the preceding claims, characterized in that the core (22, 130, 132, 134, 136, 138, 140, 142, 146, 148) is composed of expanded polypropylene (EPP ).

5.

Housing of a measuring device according to one of the preceding claims, characterized in that the core (22, 146, 148) of the protection device is composed of sections that can be assembled (14, 16, 146, 148) and / or The cover (24, 128, 150) is designed in one or several pieces.

6.

Housing of a measuring device according to one of the preceding claims, characterized in that the core (22) consists of a parallelepiped frame with longitudinal and transverse arms (30, 32, 34, 36, 38, 40, 42, 44, 182, 84), where especially the core (22) comprises arms (30, 32, 34, 36, 38, 40, 42) that start from a frame (26, 28) that preferably has a rectangular geometry and has cylindrical sections (48 , 50) which, by way of sections, are housed tightly by recessed cylindrical sections of the housing of the measuring device (46), where each section has a longitudinal groove (56, 58).

7.

Housing of a measuring device according to at least one of the preceding claims, characterized in that the sections (14, 16) of the core (22) are joined by connecting elements, such as studs, which extend into their longitudinal arms (30, 32, 34, 36, 38, 30, 32, 34, 36, 38, 40, 42, 44).

8.

Housing of a measuring device according to at least one of the preceding claims, characterized in that the cover (24) and the core (22) are components that are manufactured separately.

9.

Housing of a measuring device according to at least one of the preceding claims, characterized in that the cover (24) is fixed between the core (22) and sections (60, 62, 64, 66) of the housing of the device measurement (46), as well as fixed by tightening, where in particular the cover (24) is fixed between recesses (68, 70, 72, 74) of longitudinal arms (30, 32, 34, 36, 38, 40, 42 , 44) of the core

(22) of the protection device and soul-like sections (60, 62, 64, 66) of the housing of the measuring device (46) that engage in the recesses.

10.

Housing of a measuring device according to at least one of the preceding claims, characterized in that the core has a lower side frame and an upper side frame (26, 28) with respectively a flat arm (82, 84) defining a plane, between which a handle (86) extends, where in particular the handle is fixed between the frames (26, 28), as well as fixed by tightening.

eleven.

Housing of a measuring device according to claim 10, characterized in that from the frame

(28) on the upper side part an added part (18) that preferably surrounds distantly to a laser optic, where preferably the added part (18) is attached to the frame (28) of the upper side by means of a pressure connection or a plug connection. . 12. Housing of a measuring device according to claim 11, characterized in that the part added (18) is composed of a first annular element (88) that starts from the frame (28) of the upper side and a second annular element (98) which is preferably attached to it by means of flat souls (90, 92, 94, 96), wherein said second annular element is preferably composed of a core 5 composed of expanded polypropylene (EPP) and a cover that is composed for example of rubber such as EPDM surrounding the core, where preferably the first annular element (88) and / or the flat souls (90, 92, 94, 96 ) are made of plastic such as fiber reinforced plastic, in particular fiberglass reinforced polyamide. 13. Housing of a measuring device according to claim 12, characterized in that the first element annular (88) is a housing for a laser, as well as for a section thereof and in particular it has a control panel (106). 14. Housing of a measuring device according to claim 12, characterized in that the first annular element (88) by means of the souls, such as flat souls (90, 92, 94, 96), is secured with respect to the device housing of measurement (46), where the souls (90, 92, 94, 96) preferably have extensions (108, 110, 112, 114) as sleeves, with internal threads, where they can be screwed 15 connection elements as studs, which start from a base plate (122) of the housing of the measuring device (46), as well as can be screwed thereon and where, preferably, the connection elements as studs they cross the longitudinal arms (30, 32, 34, 36, 38, 40, 42, 44). 15. Housing of a measuring device according to claim 12, characterized in that the souls (90, 92, 94, 96) with the second annular element (98) which is preferably composed of plastic as 20 fiber reinforced plastic is particularly connected through plug connections or is integrally formed therewith. 16. Housing of a measuring device according to claim 12, characterized in that the second annular element (98) is at least partially surrounded by a core (102) in the form of an annular element that is composed of a thermoplastic material and it is covered by a cover like 25 a wrapper (104).