Splash-proof visor for hygiene requirements with innovative mounting technology

Abstract

A splash guard visor for hygiene requirements, comprising a transparent protective shield (2) covering at least the face of a wearer (7), which is connected to a headband (3) at least partially encompassing the head (6) of a wearer (7), which is connected to the protective shield (2) via lateral attachments, wherein the lateral attachment between the headband (3) and the protective shield (2) is designed as a plug connection (11) consisting of a plug-in flap (18) exposed on one side, which can be inserted into an associated slot (20), characterized in that a longitudinally elastic tension band (4) at least partially spans the back of the wearer's (7) head and is fixed with its ends (14) on both sides to the outside of the protective shield (2) and is passed through two mutually aligned hole recesses (12, 13) of the protective shield (2) and the headband (3).

Description

[0001] The invention relates to a splash protection visor for hygiene requirements according to the preamble of patent claim 1.

[0002] Such splash protection visors are widely used in medicine and essentially consist of a frontal, transparent protective shield, which is attached to a headband that extends over the back of the wearer's head.

[0003] The connection between the protective shield of the splash guard visor and the headband is usually made via a fixed riveted connection, which means that the side areas of the protective shield are riveted to the overlapping areas of the headband.

[0004] Other known splash guard visors provide a swivel joint in this fastening area, so that in this design it is possible to swivel the protective shield upwards with respect to the headband.

[0005] The disadvantage of the well-known splash protection visors is that the screw or rivet connection between the headband and the protective shield is susceptible to dirt and is difficult to clean.

[0006] US 4 920 576 A shows a splash protection visor consisting of a transparent protective shield covering the face of a wearer, which is connected to a headband which surrounds the head of a wearer and is connected to the protective shield via fastenings on each end face, wherein the fastening between the headband and the protective shield is designed as a plug-in connection which consists of several free-standing plug-in tabs which can be inserted into associated slots in the protective shield.

[0007] Mounting the protective shield is complicated due to the numerous plug-in connectors, which must match precisely to ensure a reliable connection. This limits the handling of this visor, especially with regard to cleaning or replacing the protective shield.

[0008] Another disadvantage is the slightly increased weight due to the fastening elements, which impairs wearing comfort.

[0009] The invention is therefore based on the object of developing a splash protection visor of the type mentioned at the outset in such a way that even more weight can be saved and that the connection point between the protective shield and the headband which at least partially encircles the wearer's head is easy to clean and, if necessary, can also be dismantled.

[0010] To achieve the stated object, the invention is characterized by the technical teaching of claim 1.

[0011] A feature of the invention is that a detachable connection takes place between a total of three parts of the injection-molded visor without the need to use foreign parts such as rivets, screws, fastening washers and the like.

[0012] According to a preferred feature of the invention, the lateral fastening between the headband and the protective shield consists of a plug connection.

[0013] This means that the protective shield and the headband can be plugged into each other like a plug-in connection and thus connected to each other - without any additional connecting elements made of foreign material.

[0014] This has the advantage that the connector is easy to remove and therefore also easy to clean, as the protective shield can be pulled out of the connector on the headband and cleaned. This is particularly advantageous. When the connector is removed, the protective shield changes from its curved position to a flat, leaf-like position, ensuring easy cleaning. This also applies to the headband, which changes from its curved position to a straight position and is just as easy to clean.

[0015] To ensure that the plug connection is closed, a tensioning strap is used that at least partially spans the back of the wearer's head and secures the plug connection in place.

[0016] In addition to the two parts for the splash guard visor, namely the headband and the protective shield, a third part is added.

[0017] In an embodiment not covered by the invention, the two parts mentioned in claim 1, headband and protective shield, do not necessarily require a third part, because according to this embodiment it can be provided that the headband spans the entire head of the wearer and is connected like a self-contained band to the lateral areas of the protective shield in the sense of the specified plug connection.

[0018] With such a connection technology, it is of course necessary to ensure that the length of the headband can be adjusted, which can be achieved using known length adjustment means, such as interlocking hole-and-pin arrangements or continuously adjustable length adjustment means, as are part of the state of the art.

[0019] If, however, a third part is added according to the subject matter of claim 1, it is sufficient to allow the headband to extend over only part of the wearer's head and, in particular, to replace the part of the headband that spans the back of the head with a tensioning strap that encircles this back of the head. The tensioning strap is preferably designed to be length-elastic and can be designed like a rubber band. Thus, the length adjustability is achieved by a rubber-elastic tensioning strap, which simultaneously—according to the preferred feature of claim 2—secures the plug-in connection.

[0020] This means that the tensioning strap solves two different tasks, namely, on the one hand, ensuring the length adjustability of the headband and, on the other hand, securing the plug-in state of the connector.

[0021] The plug connection can only be released when the tensioning strap is removed from its securing position from the plug connection between the headband and the protective shield.

[0022] According to a further preferred feature, the plug connection between the headband and the protective shield consists of a plug-in tab which is exposed on one side at the end of the headband by a punching and which can be inserted into an associated slot on the side wall of the protective shield.

[0023] In kinematic reversal between the location of the plug-in tab and the associated slot into which the plug-in tab is inserted, according to the subject matter of claim 5, the slot is arranged at the end of the headband and the plug-in tab obtained by the free punching and formed to be resilient on one side is arranged on the protective shield.

[0024] Having already mentioned that the third element of the splash guard visor, namely the length-elastic tensioning band, serves to secure the plug connection, according to a further feature of the invention it is preferred that in order to secure the position of the plug connection between the headband and the protective shield, the two adjacent parts of the headband and the protective shield have aligned hole recesses through which one end of the tensioning band passes.

[0025] This secures the plug connection against accidental loosening, as the tensioning strap engages through the two aligned holes in the two adjacent areas of the headband and protective shield, thus preventing the two areas from shifting relative to each other.

[0026] According to a further feature of the invention, when securing such a plug connection, it is further provided that the clamping band passing through the two aligned hole recesses is plugged onto the plug-in tab of the plug connection.

[0027] This means that the end of the tensioning strap is fixed, which can then be adjusted in length using the slots incorporated in the tensioning strap and can be plugged onto the plug-in tabs of the plug-in connection at any desired length.

[0028] For the special securing of this plug connection, it is further preferred if each plug-in tab has lateral, opposing, arcuate incisions, through which the tensioning band engages with the slots arranged therein and is tensioned there.

[0029] The opposing, curved incisions, which form a mutual, reduced distance in relation to the other areas of the plug-in tab, thus have the advantage that the slots of the tensioning strap, which lie in these curved incisions, are secured in position and the tensioning strap cannot be pulled out of the slot-plug-in tab connection without counterforce.

[0030] The subject matter of the present invention results not only from the subject matter of the individual patent claims, but also from the combination of the individual patent claims with one another.

[0031] All information and features disclosed in the documents, including the abstract, in particular the spatial configuration depicted in the drawings, could be claimed as essential to the invention, insofar as they are novel, individually or in combination, compared to the prior art. The use of the terms "essential" or "according to the invention" or "essential to the invention" is subjective and does not imply that the features so named must necessarily be part of one or more patent claims.

[0032] The invention is explained in more detail below with reference to drawings illustrating only one embodiment. Further essential features and advantages of the invention will become apparent from the drawings and their description.

[0033] They show: Fig. 1: schematically shows the type and arrangement of a splash guard, without details of the invention Fig. 2: the view in the direction of arrow II in Fig. 1 on the mounted splash guard visor Fig. 3: a development of the three parts laid out in the plane with representation of their assignment Fig. 4: a section through the connector along the line IV-IV in Fig. 2 Fig. 5: the side view of the connector in the direction of arrow V in Fig. 2, but without securing strap Fig. 6: the same representation as Fig. 5, but with the retracted tensioning strap, which secures the plug-in fastening

[0034] In Fig. 1 shows a splash guard visor 1 only schematically, which essentially consists of a protective shield 2 which is transparent and, in a curved position, covers at least the front face area of ​​a wearer 7 and partially also the head 6, wherein it is known from the prior art that a headband 3 spans the entire head 6 of the wearer and thus forms a closed, band-shaped element for attachment to the protective shield 2.

[0035] The Fig. 1 now shows a first feature of the invention, wherein it can be seen that the front end region is spanned by the headband 3, while a plug-in fastening 5 according to the invention is present in the side region of the protective shield 2 and the rear part of the headband 3 is formed by a length-elastic tensioning band 4, which spans the back of the wearer's head 7 in the manner of a slotted rubber band.

[0036] In Fig. 2 is the bottom view of the splash guard visor 1 in the direction of arrow II Fig. 1, where it can be seen that the protective shield 2 has a curvature with a larger radius and the headband 3 extends in the interior of the protective shield 2, which headband 3 can be coated with a padding band 9 in its forehead area 8, so that the forehead of the wearer 7 rests on the inside of the headband 3 approximately between the positions 24.

[0037] The two curved parts 2, 3 overlap in the side area of ​​the protective shield 2 in an overlap area 10, in which the said plug-in fastening 5 is arranged according to the invention.

[0038] The Fig. 2 shows only schematically that the plug connection is secured by the longitudinally elastic tensioning band 4, which passes through two overlapping hole recesses 12 and 13 and is clamped in a positionally secured manner on the outside of the protective shield 2 in the area of ​​the plug-in tab 18 arranged there.

[0039] The three parts mentioned are in the processing in Fig. 3. The protective shield 2 has lateral projections 15, in the outer regions of which a hole 13 is provided for the passage of the end of the tensioning strap 4. Furthermore, an approximately horizontal slot 20 is incorporated into the material of the protective shield 2, which extends through the material.

[0040] The headband 3 shown above has a hole recess 12 at each end, which, when mounted, is aligned with the hole recess 13 in the protective shield 2.

[0041] According to the invention, in a first embodiment, a single-sided resilient plug-in flap 18 is punched out of the material of the headband 3 by means of a cut-out 19 on both sides in the area of ​​the headband 3, whereby it is preferred if the headband 3 is made of a polycarbonate plastic. For better ventilation, one or more perforations 17 can also be provided in the front area of ​​the headband. In this area, the Fig. 2 shown cushioning band 9 may be arranged.

[0042] As can be seen from Fig. 3, the length of the headband 3 is shorter than the length between the two opposing holes 13 in the protective shield 2. This distance 21 ensures that when the holes 12, 13 are superimposed, the protective shield 2 transitions into a curved state and thereby acquires a dimensionally stable curvature, which is retained even when the protective shield 2 is made of a very thin material, for example, in the range of one-tenth to five-tenths of a millimeter. The entire protective shield 2 weighs approximately 20 to 60 g, preferably approximately 30 g.

[0043] Above the headband 3 is Fig. 3 shows the top view of the longitudinally elastic tensioning band 4, which can preferably consist of a trouser elastic having a number of slits 16. According to Fig. 2, the longitudinally elastic tensioning band 4 spans the back of the wearer’s head 7.

[0044] The Fig. 4 shows a schematic section through the plug connection 11 according to the invention, where it can be seen that the headband 3 and the protective shield 2 lie flush against one another in the region of their overlapping area 10 and the plug-in tab 18 formed by the punched-out portion 19 extends through an associated slot 20 on the protective shield and is anchored behind the slot.

[0045] This protects the two adjacent parts against longitudinal and transverse displacement in the plane of the Fig. 4 secured.

[0046] For further securing the position, it is intended that the aligned hole recesses 12, 13 are held together in a position-secured manner by the clamping band end 14 of the clamping band 4. For this purpose, the clamping band 4 is guided through the two hole recesses 12, 13 and is plugged onto the plug-in tab 18 with one of its slots 16 and secured there. This is shown in Fig. 4 shown.

[0047] The Fig. Figure 5 shows the same connector 11 in the assembled state. To better distinguish the associated parts, the parts of the protective shield 2 are shown in dashed lines, while the parts of the headband are shown in solid lines.

[0048] The Fig. Figure 5 shows the assembled state of the plug connection 11, where it can be seen that the one-sided spring-loaded plug-in tab 18 has already been pushed through the slot 20 in the headband 3 and extends beyond the slot, thus providing a position-secured plug connection. Fig. 5 also shows that the two aligned holes 12, 13 are present, through which the tensioning strap 4 will later be pulled. Fig. 5 also shows that, in a preferred embodiment, the plug-in tab 18 has two opposing notches 23, which are directed toward one another and are opposite one another, onto which the respective slot 16 of the tensioning strap 4 is then clamped. Since these notches 23 are spaced closer together than the overlying sections of the plug-in tab 18, the slot of the tensioning strap 4 cannot slip out of the notches 23. Only when a tensile force is exerted on the tensioning strap 4 in the direction of arrow 22 does the slot length 16 increase, allowing the tensioning strap to be removed from its secured position from the plug-in tab 18.

[0049] The Fig. 6 shows the fully assembled plug connection with the three parts mentioned, whereby for the sake of clarity the parts of the protective shield 2 are shown in dashed lines, while the parts of the tensioning strap 4 are shown in dash-dotted lines and the parts of the headband 3 are shown in solid lines.

[0050] Out of Fig. 6 it can now be seen that the tensioning strap 4 has been pulled through the two mutually aligned hole recesses 12, 13 with its end 14 and is inserted with a slot 16 into the opposite notches 23 on the plug-in tab 18, so that the plug-in tab 18 can no longer be pulled downwards out of the headband-side slot 20 of the headband 3.

[0051] This results in a particularly simple attachment between a protective shield, a headband, and a tensioning strap, without the use of foreign material components such as screws, rivets, length-adjustable sleeves, etc. This significantly reduces the weight of the entire splash guard visor, and cleaning is particularly easy, as disassembling the plug-in connection reveals the Fig. 3 parts shown, which are particularly easy to clean and sterilize.

[0052] The plug connection 11 mentioned has a high load-transmitting capacity, since the downward tilting moment, which acts on the protective shield 2 due to its weight, is absorbed by the slot walls of the slot 2 with the surfaces of the plug-in tab 18 lying thereon, whereby Fig. 6 The proportions are not shown to scale. In the assembled state, the plug-in tab 18 engages with only slight play through the headband-side slot 20, thus transferring the weight-related torque exerted by the protective shield to the headband 3.

[0053] Furthermore, it is shown only schematically that the slot 16 sits completely and flush in the opposite notches 23 of the plug-in tab 18 and is fixed there elastically. The drawing in Fig. 6, however, shows a greater length of the slot 16 of the tensioning band 4 compared to the distance between the incisions 23 in order to better illustrate their layer assignment.

[0054] In practice, the slot length 16 in the tensioning band 4 is considerably shorter than the mutual distance between the notches 23 on the plug-in tab 18, in order to plug the tensioning band 4 onto the plug-in connection under permanently elastic pre-tension and thus to secure the plug-in tab 18 in its plug-in connection in the slot 20. Drawing legend 1 splash guard visor 2 protective shield 3 Headband 4 tensioning strap 5 Plug-in fastening 6 heads 7 carriers 8 Forehead area 9 Upholstery tape 10 Overlap area 11 Plug connection 12 hole recess (of 3) 13 hole recess (of 2) 14 Strap end 15 Approach (of 2) 16 slots (in 4) 17 perforations (in 3) 18 plug-in flaps (in 3) 19 Free punching (in 3) 20 slots (in 2) 21 distance (between 12 and 13) 22 Arrow direction 23 incision (in 18) 24 positions

Claims

[1] Splash protection visor for hygiene requirements consisting of a transparent protective shield (2) covering at least the face of a wearer (7), which is connected to a headband (3) at least partially enclosing the head (6) of a wearer (7), which is connected to the protective shield (2) via lateral fastenings, wherein the lateral fastening between the headband (3) and the protective shield (2) is designed as a plug-in connection (11) consisting of a plug-in tab (18) exposed on one side, which can be inserted into an associated slot (20), characterized by that a length-elastic tensioning band (4) at least partially spans the back of the wearer's head (7) and is fixed by its ends (14) on both sides to the outside of the protective shield (2) and is guided through two mutually aligned hole recesses (12, 13) in the protective shield (2) and the headband (3). [2] Splash guard visor according to claim 1, characterized by that the locking state of the plug connection (11) is secured by the clamping band (4) which overlaps the plug connection (11). [3] Splash guard visor according to claim 1 or 2, characterized by that the tensioning band (4) has a number of slots (16) which are spaced longitudinally apart from one another. [4] Splash guard visor according to one of claims 1 to 3, characterized by that the plug connection (11) between the headband (3) and the protective shield (2) consists of a plug-in tab (18) which is exposed on one side at the end of the headband (3) by a punched-out section (19) and which can be inserted into the associated slot (20) on the side wall of the protective shield (2). [5] Splash guard visor according to one of claims 1 to 3, characterized bythat the plug connection (11) between the headband (3) and the protective shield (2) consists of the slot (20) arranged at the end of the headband (3), through which the plug-in tab (18) exposed on one side by a punched-out opening (19) in the protective shield (2) can be inserted. [6] Splash guard visor according to one of claims 1 to 5, characterized by in that, in order to secure the position of the plug connection (11) between the headband (3) and the protective shield (2), the aligned hole recesses (12, 13) of the two adjoining parts are penetrated by the end of the tensioning strap. [7] Splash guard visor according to claim 6, characterized by that the clamping band (4) passing through the two aligned hole recesses (12, 13) for further securing the plug connection (11) is plugged onto the plug-in tab (18) of the plug connection (11). [8] Splash guard visor according to one of claims 1 to 7, characterized bythat the plug-in tab (18) has lateral, mutually opposite arcuate incisions (23) over which the tensioning band (4) with the slots (16) arranged therein is tensioned under rubber-elastic stretching. [9] Splash guard visor according to one of claims 1 to 8, characterized by that the headband (3) has one or more perforations (17) or a padding band (9) in the front area. [10] Splash guard visor according to one of claims 1 to 8, characterized by that the plug connection (11) between the headband (3) and the protective shield (2) and the tensioning strap (4) can be easily disassembled.

Images