Central part for a spectacle hinge and spectacles with such a central part

Abstract

The invention relates to a central part (1) for an eyeglass hinge (3), comprising: - a first articulation region (7), which is designed to connect, with articulation about a first articulation axis (A1), the central part (1) to a frame (11) of eyeglasses (5); - a second articulation region (9), which is designed to connect, with articulation about a second articulation axis (A2), the central part (1) to a temple (13) of the eyeglasses (5); and - a cable guide opening (15), which extends through the central part (1) perpendicularly to the articulation axes (A1, A2) and is designed for the feeding of a cable (17) from the temple (13) to the frame (11) through the central part (1), the cable guide opening (15) being open in the direction of the articulation axes (A1, A2) at least on one side.

Description

[0001] DESCRIPTION

[0002] Central part for a spectacle hinge and spectacles with such a central part

[0003] The invention relates to a central part for a spectacle hinge and to spectacles with such a central part.

[0004] Glasses with electronic functions, such as data glasses, glasses for augmented reality (AR glasses), or glasses for virtual reality (VR glasses), are becoming increasingly important. In such glasses, an electronic functional element, such as a display device or the like, is typically integrated into a frame of the glasses or arranged on the frame, with a control device, such as a controller and / or an electrical storage device, such as a battery or an accumulator, being integrated into a temple of the glasses or arranged on the temple. This then requires an energy and / or data-transmitting connection between the temple on the one hand and the frame on the other.A cable can be provided for this purpose, be it an electrical cable or an optical cable, which must be guided over a hinge that connects the temple to the frame. Conventional glasses and hinges are hardly suitable for this purpose and can only be retrofitted with difficulty or with considerable expense. In particular, there is a need for a cable guide over the hinge that is simply designed and protects the cable in particular from influences from outside the glasses, while at the same time ensuring that the glasses can be easily installed and removed, especially for maintenance purposes. At the same time, functions typical of hinges, such as the most accurate definition possible of various functional positions for the temple, in particular a rest position and a wearing position, must be guaranteed.It is also generally desirable to implement a so-called snap-action effect, whereby the temple piece is automatically shifted into at least one of the aforementioned functional positions as soon as it reaches or exceeds a certain critical angle range relative to the frame. The invention is based on the object of creating a central part for a spectacle hinge and a pair of spectacles with such a central part, which offers at least certain advantages over conventional spectacle hinges, in particular realizing at least one of the aforementioned aspects.

[0005] The object is achieved by providing the present technical teaching, in particular the teaching of the independent claims as well as the embodiments disclosed in the dependent claims and the description.

[0006] The object is achieved in particular by providing a central part for a spectacle hinge, which has a first articulation region which is designed to connect the central part to a spectacle frame in an articulated manner about a first articulation axis. The central part has a second articulation region which is designed to connect the central part to a temple of the spectacles in an articulated manner about a second articulation axis. The central part also has a cable routing recess which penetrates it perpendicular to the articulation axes and is designed to guide a cable from the temple to the frame through the central part, in particular an electronic cable or an optical cable, in particular a cable for energy and / or data transmission. The cable routing recess is open on at least one side in the direction of the articulation axes.The central part proposed here can in particular provide a simple, yet gentle and safe way of guiding a cable from the temple to the frame.

[0007] A pair of glasses comprising the central part is particularly easy to assemble, as the central part is pivotally connected to the frame in the first pivot area, and pivotally connected to the temple in the second pivot area. This simultaneously forms a hinge for the glasses, with the frame, temple, and central part together forming the hinge.

[0008] The cable is protected simply by dividing a pivoting movement of the temple relative to the frame from a rest position to a wearing position and back into two partial pivoting movements: a first partial pivoting movement of the central part relative to the frame about the first joint axis, and a second partial pivoting movement of the temple relative to the central part about the second joint axis. To achieve the full pivoting angle of the temple relative to the frame, typically approximately 90°, only a significantly reduced pivoting angle is required for each of the two partial pivoting movements, in particular—with a symmetrical division of the pivoting movement into the two partial pivoting movements—a respective partial pivoting movement of approximately 45°.Thus, the cable is bent in the region of a transition from the temple to the central part on the one hand and from the central part to the frame on the other hand in any case by less than 90°, preferably in each case by approximately 45°.

[0009] Furthermore, the central part protects the cable, particularly from influences from outside the glasses.

[0010] The pivoting movement of the temple relative to the frame preferably occurs around an imaginary hinge axis, which is not physically formed or manifested in the hinge. Rather, the pivoting movement around the imaginary pivot axis results from the preferably forced movement of the temple relative to the frame, which is determined by the two partial pivoting movements around the two joint axes. However, it is also possible for the pivoting movement to be more complex, in particular as a superposition of several movements, whereby in particular the imaginary hinge axis itself is not spatially fixed, but rather shifts along a specific path.

[0011] The central part proposed here is advantageously simple and inexpensive to manufacture and can be easily mounted on spectacles, in particular by connecting the first articulation area to the frame and the second articulation area to the temple.

[0012] Since the cable routing recess is open on at least one side, the cable for mounting the central part can be easily inserted into the central part by inserting it into the cable routing recess from the open side. This eliminates the need for complicated threading or threading of the cable into or through the cable routing recess. This design also makes disassembly of the glasses particularly easy, as the cable does not have to be separated from the frame and temples, nor from any electrical or electronic component, in order to remove the central part from the glasses and, in particular, the cable. Rather, the central part can simply be pulled sideways off the cable via the cable routing recess that is open on one side, which significantly simplifies maintenance or modification of the glasses.

[0013] According to a preferred embodiment, the central part is formed as a single piece. Assembly and disassembly of the central part is particularly simple if it is formed as a single piece. The fact that the central part is formed as a single piece means, in particular, that the central part consists only of a base body, which in particular has the two articulation areas and the cable routing recess. In particular, the central part is preferably formed from a single material.

[0014] Due to the easy installation and removal of the central part, it can easily be retrofitted to existing glasses. Furthermore, it features a universally applicable, unobtrusive design.

[0015] According to a further development of the invention, it is provided that the central part has an inner side facing the face of a wearer of the glasses when mounted on the glasses and an outer side facing away from the wearer's face.

[0016] The directional and spatial orientation terms used here and below primarily refer to the arrangement of the central part and the spectacles on the face of the wearer of the spectacles (the "wearer" for short) in their intended condition, with the wearer in an upright, standing posture and looking straight ahead. "Inside" means "facing the wearer's face," "outside" means "facing away from the wearer's weight," "top" means "geodetically above," and "bottom" means "geodetically below."

[0017] The cable routing recess is preferably closed to the outside. In particular, the central part preferably has an outer wall that defines the cable routing recess on the outside. This protects the cable in a particularly advantageous manner from influences from outside the glasses, both in the wearing position and, in particular, in the rest position, when the outer side of the central part is exposed to the outside due to the temple being folded against the frame.

[0018] The wearing position of the temple is in particular a functional position in which the temple is arranged at an angle of approximately 90° to the frame, such that a wearer of the glasses can put on and wear the glasses. The rest position, in contrast, is a functional position in which the temple extends approximately parallel to the frame and is folded in such a way that the glasses cannot be worn, but can also be safely stowed and transported, for example, in a glasses case. The cable routing recess is preferably closed towards the inside. In particular, the central part preferably has an inner wall which delimits the cable routing recess on the inside. In particular, the cable routing recess is preferably closed both on the outside and on the inside. In particular, the central part preferably has both the outer wall and the inner wall.

[0019] In one embodiment of the central part, it is provided that the central part has at least one cooling structure, in particular at least one cooling fin, preferably a plurality of cooling fins, on the outside, in particular on the outer wall. This enables very efficient heat dissipation from an electronic functional element of a pair of glasses having the central part.

[0020] Alternatively or additionally, the central part preferably has at least one cooling structure, in particular at least one cooling fin, preferably a plurality of cooling fins, on the inside, in particular on the inner wall. This configuration also contributes to efficient heat dissipation from an electronic functional element of a pair of glasses comprising the central part. In a preferred configuration, the central part has the at least one cooling structure on both the outside and the inside, in particular on both the outer and inner walls.

[0021] According to a further development of the invention, the central part has, at least in one articulation region selected from the first articulation region and the second articulation region, a first locking element which is designed to define the rest position of the temple. The central part further has, in the at least one articulation region, a second locking element which is designed to define the wearing position of the temple. In an advantageous embodiment, the first locking element and the second locking element enable the temple and / or the frame to at least easily lock into place, on the one hand, in the rest position and, on the other hand, in the wearing position. In this way, accurately defined functional positions for the temple relative to the frame are advantageously achieved.Preferably, the locking elements, particularly in conjunction with a suitably designed, spring-loaded counter-locking element on at least one of the spectacle elements, can achieve a snap-action effect, whereby the temple piece is automatically forced into the nearest functional position upon reaching a predetermined critical angle range, without requiring further interaction by the wearer. In a particularly preferred embodiment, the central part between the first locking element and the second locking element is designed such that a potential maximum must be overcome in order for the counter-locking element to move from the first locking element to the second locking element, whereby it is forced into the respective locking element after overcoming the potential maximum.

[0022] According to a further development of the invention, at least one locking element, selected from the first locking element and the second locking element, is designed as a locking recess. This represents a particularly simple and easy-to-manufacture design of the locking element. The locking element is preferably designed as a circular, preferably trough-shaped, locking recess.

[0023] According to a further development of the invention, the central part has, in both the first articulation region and the second articulation region, a first locking element for defining the rest position of the temple and a second locking element for defining the wearing position of the temple. In particular, a first locking element for defining the rest position and a first second locking element for defining the wearing position are arranged in the first articulation region. A second locking element for defining the rest position and a second locking element for defining the wearing position are arranged in the second articulation region. The rest position and the wearing position can thus advantageously be defined in a particularly stable manner.

[0024] According to a further development of the invention, the central part has an upper side and a lower side, viewed in the direction of the joint axes. In the intended wearing position of the central part on a pair of glasses - as explained above - the upper side is arranged geodetically at the top, and the lower side is arranged geodetically at the bottom. At least in one articulation region, selected from the first articulation region and the second articulation region, the central part has, on at least one side, selected from the upper side and the lower side, a screw connecting element for establishing the articulated connection with the respectively associated spectacle element, i.e. the temple or the frame. The screw connecting element enables a simple and cost-effective articulated connection between the spectacle element and the central part, which is also stable.At the positions where no screw connection element is provided, the articulated connection may instead be provided in the form of an axle stub or projection engaging in a suitable recess, wherein the axle stub or projection may be provided on the central part and the recess on the spectacle element, or conversely the axle stub or projection may be provided on the spectacle element and the recesses on the central part.

[0025] Preferably, the central part has a screw connecting element in the at least one articulation region on both the top side and the bottom side.

[0026] Preferably, the central part has a screw connecting element on at least one side, selected from the top side and the bottom side, both in the first articulation region and in the second articulation region.

[0027] A particularly preferred embodiment is one in which a screw connecting element is provided in each of the two articulation regions, i.e. the first articulation region and the second articulation region, on both sides, i.e. on the top side and on the bottom, for establishing the articulated connection with the respectively associated spectacle element. In the first articulation region, a screw connecting element is provided on both the top side and the bottom for establishing the articulated connection with the frame; in the second articulation region, a screw connecting element is provided on both the top side and the bottom for establishing the articulated connection with the temple. This enables a particularly stable articulated connection of the central part to the spectacle elements, which is also easy to separate.

[0028] According to a further development of the invention, the screw connection element is designed as a thread. A suitable screw can engage in the thread to connect the central part to the associated spectacle element in an articulated manner. In a preferred embodiment, the associated spectacle element can have a through-hole through which the screw extends, then meshing with the thread of the central part and thus creating the articulated connection between the spectacle element and the central part.

[0029] According to a further preferred embodiment, in particular for producing a particularly narrow spectacle hinge, the screw connection element can also be designed as a continuous thread or as a through-hole, wherein the continuous thread or the through-hole extends from the top side to the bottom side in the associated articulation region. A counter-connection element such as a screw or a bolt is then inserted into the through-hole or the continuous thread, preferably from one side selected from the top side and the bottom side, whereby the central part is articulated to the associated spectacle element. The screw can then cooperate in particular with a thread provided in the spectacle element if the central part has a through-hole as a screw connection element.

[0030] According to a further development of the invention, the central part is formed from a metal. This provides a design for the central part that is both stable and valuable, yet also simple and cost-effective to manufacture. Preferably, the central part is made of a metal. The term "metal" includes, in particular, a metal alloy.

[0031] In a preferred embodiment, the central part is formed from metal using a metal powder injection molding process. Alternatively, it is possible for the central part to be formed from a metal using a sintering process. Alternatively, it is possible for the central part to be formed from a metal using a generative manufacturing process, in particular an additive manufacturing process, preferably a powder-bed-based manufacturing process such as selective elastomer melting or selective elastomer sintering. In this way, the central part can be manufactured very simply and preferably without mechanical rework, with high precision and freedom in the specific design.

[0032] According to an alternative preferred embodiment, the central part is formed from a plastic. It preferably consists of a plastic. In this way, the central part can be particularly lightweight and cost-effective. The plastic can, in particular, be a fiber-reinforced plastic. The central part is preferably manufactured by injection molding or generative manufacturing, in particular additive manufacturing.

[0033] According to a further development of the invention, the cable routing recess is open on a first side in the direction of the joint axes and closed on a second opposite side. On the second side, on which the cable routing recess is closed, the central part has a base region for the cable routing recess. With this embodiment, the cable is not only easily inserted into the cable routing recess, but is also advantageously supported and guided by the base region. At the same time, disassembly of the central part is easy, in particular without having to disconnect the cable from the temple or frame and / or from an electrical or electronic component to which the cable is connected.

[0034] In a particularly preferred embodiment, the cable routing recess is open on the top side and closed on the bottom side, with the base region located on the underside of the central part. Thus, the cable is advantageously held in the cable routing recess and thus in the central part by gravity when the central part is properly positioned on a pair of glasses worn by a wearer.

[0035] In one embodiment of the central part, the central part is designed and, in particular, matched to a pair of glasses for which the central part is used, such that the cable guide recess is arranged in the region of an imaginary neutral fiber or zero line of the glasses. In particular, in this way a cable arranged in the cable guide recess can run in the region of or preferably along the imaginary neutral fiber or zero line, so that a path over which the cable is laid remains at least largely unchanged, preferably unchanged, between the rest position and the wearing position of the glasses. In this way, stretching and / or compression of the cable can be at least largely avoided, and this can prevent the cable from being subjected to mechanical stress or, in the worst case, from becoming trapped.In particular, the central part is preferably adapted to the temples and the frame of the glasses. In particular, the arrangement of the cable routing recess on the central part is adapted accordingly.

[0036] In the context of the present technical teaching, an imaginary neutral fiber or zero line is understood in particular to be an imaginary line that runs through the frame and the temple of the glasses, and whose length does not change when the temple is pivoted between the rest position and the wearing position. In deviation from the use of the terms "neutral fiber" or "zero line" in strength of materials, it is possible and even preferably provided in the context of the present technical teaching that the imaginary neutral fiber or zero line does not run through the material of the temple and the frame, but rather through recesses arranged in the temple on the one hand and in the frame on the other, in particular recesses that are provided to accommodate at least one cable. The object is also achieved by creating glasses that have a frame and a temple.The frame is, in particular, an element that encloses at least one spectacle lens, in particular two spectacle lenses, and holds it to the spectacles. In particular, the frame is a central part of the spectacles. The temple is pivotally connected to the frame via a central part according to the invention or a central part according to one of the previously described embodiments, between the previously defined rest position and the likewise previously defined wearing position. In conjunction with the spectacles, the advantages already explained in connection with the central part are realized in particular.

[0037] Preferably, the spectacles have two temples and two central parts, wherein a first temple, for example a left temple, is connected to the frame via a first central part, wherein a second temple, for example a right temple, is connected to the frame via a second central part.

[0038] In a preferred embodiment, the glasses are designed as data glasses, in particular as glasses for augmented reality, or as glasses for virtual reality. It is also preferably possible for the glasses to be designed as sensor glasses, with at least one sensor, in particular for monitoring a physical condition of the wearer. Furthermore, it is preferably possible for the glasses to be designed as audio glasses, in particular as an audio headset or with an audio headset.

[0039] According to a further development of the invention, the frame is hingedly connected to the central part in its first hinge region, and the temple is hingedly connected to the central part in its second hinge region. The frame, the central part, and the temple together form a hinge of the spectacles.

[0040] This spectacle hinge preferably has an imaginary hinge axis around which the temple pivots when moving from the rest position to the wearing position - and vice versa.

[0041] The pivoting movement actually breaks down into two partial pivoting movements, namely a first partial pivoting movement of the central part about the first hinge axis relative to the frame, and a second partial pivoting movement of the temple about the second hinge axis relative to the central part. In particular, the hinge thus formed does not have a hinge axis that is either material or materialized in the form of a shaft or the like.

[0042] According to a further development of the invention, at least one spectacle element, selected from the temple and the frame, has an elastically prestressed counter-locking element configured to interact with the first locking element of the central part, which is assigned to the spectacle element, to define the rest position, and to interact with the second locking element of the central part, which is assigned to the spectacle element, to define the wearing position. Due to the elastic prestress, the counter-locking element can advantageously achieve the snap effect already described above in the respective functional position, i.e., the wearing position and / or the rest position.

[0043] In a preferred embodiment, both eyeglass elements, the temple and the frame, each have such an elastically preloaded counter-locking element. This enables a particularly pronounced and stable snap-action effect and, at the same time, a stable, accurate, and distinct definition of the functional position.

[0044] According to a further development of the invention, the counter-locking element is designed as a spring-loaded piston guided in a receiving bore of the respective eyeglass element. The first locking element and the second locking element are each designed as locking recesses into which the spring-loaded piston is preloaded in the respective assigned functional position, i.e., the rest position and the wearing position. This represents a simple, cost-effective, and stable design of the counter-locking element.

[0045] Preferably, a helical spring is assigned to the counter-locking element as a pre-tensioning element, which is preferably arranged in the receiving bore.

[0046] According to a further development of the invention, a cable, in particular an electrical cable or an optical cable, is routed from the temple to the frame in the cable guide recess of the central part. This particularly realizes the aforementioned advantages. According to a further development of the invention, the cable is designed as a ribbon cable or as an FPC (flexible printed circuit) connector. The aforementioned advantages are particularly advantageously realized with a ribbon cable or FPC connector.

[0047] In one embodiment of the spectacles, at least one element selected from the frame and the temples has a heat dissipation recess through which a fluidic connection is established from an external environment to the outer side, in particular the outer wall, of the central part, and / or through which the outer side, in particular the outer wall, of the central part is accessible in the wearing position, i.e., exposed to an external environment. In this way, heat can be efficiently dissipated from the central part, so that it can advantageously contribute to cooling an electronic functional element of the spectacles.

[0048] Preferably, the central part has at least one cooling structure on the outside and / or on the inside.

[0049] In one embodiment of the glasses, the heat dissipation recess is provided only on the temples. In another embodiment of the glasses, the heat dissipation recess is provided only on the frame.

[0050] In another embodiment of the spectacles, the heat dissipation recess is formed, at least in the wearing position, by a first partial recess formed on the temple and a second partial recess formed on the frame, wherein the heat dissipation recess is formed in the wearing position by combining the two partial recesses into the heat dissipation recess by pivoting the temple relative to the frame in the wearing position.

[0051] In yet another embodiment, the temple piece has a first heat dissipation recess that establishes a first fluidic connection to the outside of the central part, while the frame simultaneously has a second heat dissipation recess that establishes a second fluidic connection to the outside of the central part. Overall, this creates a flow path through which air can flow from the external environment via the first fluidic connection to the outside of the central part and exit back into the external environment via the second fluidic connection. In this way, a cooling air flow over the outside of the central part can be realized.Of course, the airflow can also take the opposite path, i.e., flowing into the outer side of the central part via the second flow connection and exiting back into the outside environment via the first flow connection. In this embodiment, the outer side of the central part itself can be visually concealed from the observer when the device is in the worn position.

[0052] In one embodiment of the glasses, it is provided that the cable guide recess of the central part is arranged in the region of the imaginary neutral fiber or zero line of the glasses, in particular the temple and the frame.

[0053] The invention is explained in more detail below with reference to the drawings, which show:

[0054] Figure 1 shows a representation of a first embodiment of a central part for a spectacle hinge with a cable;

[0055] Figure 2 is an exploded view of a detail of a first embodiment of spectacles with the central part according to Figure 1;

[0056] Figure 3 shows a detail of the glasses according to Figure 2 in two different functional positions;

[0057] Figure 4 is an exploded view of a detail of a second embodiment of spectacles with a second embodiment of a central part;

[0058] Figure 5 shows a representation of a third embodiment of a central part;

[0059] Figure 6 is a view of a detail of a third embodiment of spectacles with the central part according to Figure 5, and

[0060] Figure 7 shows a detail of a fourth embodiment of spectacles with the central part according to Figure 5.

[0061] Fig. 1 shows a first embodiment of a central part 1 for a spectacle hinge 3, shown in particular in Figure 3, of a pair of spectacles 5, also at least partially shown in Figure 3, wherein the central part 1 has a first articulation region 7 and a second articulation region 9. The first articulation region 7 is designed to connect the central part 1 in an articulated manner about a first articulation axis A1 to a frame 11, again shown in particular partially in Figure 3, of the spectacles 5, and wherein the second articulation region 9 is designed to connect the central part 1 in an articulated manner about a second articulation axis A2 to a spectacle temple 13, also shown partially in Figure 3, of the spectacles 5. The central part 1 has a cable guide recess 15, which is designed to pass a cable 17 through the central part 1 from the spectacle temple 13 to the frame 11.The cable guide recess 15 is open at least on one side in the direction of the joint axes A1, A2. This allows the central part 1 to be arranged very easily on the cable 17, in particular by inserting the cable 17 into the cable guide recess 15 from the open side, or by sliding the central part 1 with the cable guide recess 15 onto the cable 17 from the open side. The central part 1 can be removed just as easily from the glasses 5 and in particular from the cable 17, in particular without having to separate the cable 17 from the frame 11, the temple 13, or an electrical or electronic component to which the cable 17 is connected.

[0062] Preferably, the central part 1 is formed in one piece.

[0063] At the same time, the central part 1 protects the cable 17, in particular from mechanical influences, in particular in a rest position of the temple 13, in particular from effects from outside the glasses 5. The hinge 3, which is formed by the temple 13, the frame 11 and the central part 1, can be of simple construction, yet stable, easy to assemble and disassemble, and thereby optimally protect the cable 17.

[0064] The central part 1 has an inner side 19 facing the face of a spectacle wearer when mounted on the spectacles 5, which inner side also faces the viewer in Figure 1a). It also has an outer side 21 facing away from the face of the spectacle wearer when mounted on the spectacles 5, which outer side 21 faces away from the viewer in Figure 1a), but faces the viewer in Figure 1b).

[0065] In Figure 1, the central part 1 can thus be seen, particularly in a) from a first side, namely, looking toward the inner side 19, and in b) from the other side, namely, looking toward the outer side 21. In the two views according to Figure 1, it can be seen that the cable routing recess 15 is closed toward the outer side 21. In particular, it has an outer wall 23 on the outer side 21, through which the cable 17 is protected from the outside.

[0066] The cable guide recess 15 is preferably also closed toward the inner side 19. In particular, the central part 1 preferably has an inner wall 20 that delimits the cable guide recess 15 inwardly.

[0067] The cable guide recess 15 is open upwards, towards an upper side 25, wherein in the region of the upper side 25 in particular a slot 26 is formed through which the cable 17 can be inserted into the cable guide recess 15.

[0068] The cable guide recess 15 is closed on a bottom side 27 opposite the top side 25 in the direction of the joint axes A1, A2, wherein the central part 1 here has, in particular, a bottom area 29 for the cable guide recess 15. In particular, the cable 17 can be supported on the bottom area 29.

[0069] The central part 1 has, in the first articulation region 7, a first first locking element 31.1 of two first locking elements 31 for defining the rest position of the temple 13, as well as a first second locking element 33.1 of two second locking elements 33 for defining a wearing position of the temple 13. In the second articulation region 9, the central part 1 has a second first locking element 31.2 of the two first locking elements 31, as well as a second second locking element of the two second locking elements 33, which is hidden from the viewer due to the perspective of the various representations.

[0070] The locking elements 31, 33 are all designed as locking recesses.

[0071] On the top side 25, the central part 1 has a first screw connection element 35 in the first articulation area 7. In the first articulation area 7, a second screw connection element is also provided on the bottom side 27, although this is hidden from the viewer's view due to the perspective. The central part 1 also has a first second screw connection element 37 in the second articulation area 9 on the top side 25, and also a second second screw connection element in the second articulation area 9 on the bottom side 27, which is also hidden from the viewer's view. The screw connection elements 35, 37 each serve to establish the articulated connection with the respectively associated spectacle element, selected from the temple 13 and the frame 11. In the first exemplary embodiment shown here, the screw connection elements 35, 37 are all designed as threads.

[0072] The central part 1 is preferably made of metal, which includes a metal alloy; in particular, the central part 1 is preferably made of a metal, which in turn includes a metal alloy. The central part 1 is preferably formed using a metal powder injection molding process, a sintering process, or a generative manufacturing process. Alternatively, the central part 1 is made of a plastic. It is preferably made of a plastic. The plastic can, in particular, be a fiber-reinforced plastic. The central part 1 is preferably manufactured from the plastic by means of injection molding or generative manufacturing, in particular additive manufacturing.

[0073] Fig. 2 shows an exploded view of a detail of the glasses 5 with the frame 11, the temple 13 and the central part 1.

[0074] Identical and functionally identical elements are provided with the same reference symbols in all figures, so that reference is made to the preceding description in each case.

[0075] In the assembled state, the temple piece 13 is pivotally connected to the frame 11 via the central part 1 between its rest position and its wearing position.

[0076] In particular, the frame 11 is pivotally connected to the central part 1 in its first pivot region 7, while the temple 13 is pivotally connected to the central part 1 in its second pivot region 9. The frame 11, the central part 1, and the temple 13 together form the hinge 3.

[0077] The frame 11 has a first, elastically prestressed counter-locking element 39, which is configured to interact with the first locking element 31.1 of the central part 1 to define the rest position of the temple 13. It is further configured to interact with the first second locking element 33.1 to define the wearing position of the temple 13.

[0078] The temple 13 has a second elastically prestressed counter-locking element 41, which is configured in a corresponding manner to cooperate with the second first locking element 31.2 of the central part 1 to define the rest position of the temple 13, and to cooperate with the second second locking element to define the wearing position of the temple 13.

[0079] The counter-locking elements 39, 41 are designed as spring-loaded pistons guided in a receiving bore of the respectively associated spectacle element, whereby only the receiving bore 43 provided in the temple 13 is visible here. A corresponding receiving bore is also formed in the frame 11. In the respectively associated functional positions, i.e., the rest position on the one hand and the wearing position on the other, the spring-loaded pistons are pushed under preload into the respective locking elements 31, 33 designed as locking recesses. A helical spring is each assigned to the counter-locking elements 39, 41 as a preloading element 45. These preloading elements 45 are also arranged in the respectively associated receiving bore 43 and act upon the counter-locking elements 39, 41 designed as pistons, respectively, to move into the respective functional positions.

[0080] The articulated connections between the central part 1 and the frame 11 on the one hand and the temple 13 on the other hand are effected here by screws 46, which each pass through through holes 49 of the spectacle elements and interact with the screw connecting elements 35, 37 designed as threads in order to produce the respective articulated connections.

[0081] The cable 17 is designed in particular as an electrical cable or as an optical cable, in particular as a ribbon cable or FPC connector.

[0082] The glasses 5 are preferably data glasses, in particular glasses for augmented reality, or glasses for virtual reality. It is also preferably possible for the glasses 5 to be designed as sensor glasses, with at least one sensor, in particular for monitoring a physical condition of the wearer. Furthermore, it is preferably possible for the glasses 5 to be designed as audio glasses, in particular as an audio headset or with an audio headset.

[0083] Fig. 3 shows at a) a detailed view of the spectacles 5 in the wearing position of the temple arm 13. The temple arm 13 pivots relative to the frame 11 from the wearing position into the rest position shown at b). In the case of the spectacle hinge 3 proposed here, this pivoting movement is broken down into two partial pivoting movements, one about the first joint axis A1 and the other about the second joint axis A2. At b), the temple arm 13 is shown in its folded-in rest position. This clearly shows that, due to the two partial pivoting movements and the associated smaller partial pivoting angles in the area of ​​the joint axes A1, A2, the cable 17 is bent less sharply than if the pivoting movement were to occur directly about a material hinge axis, for example a cardan shaft or the like, wherein the cable 17 is deflected here in particular twice by approximately 45° instead of once by 90°.On the other hand, it is clear that the cable 17 is protected from influences from outside the glasses 5 by the outer wall 23 of the central part 1, towards the outside 21.

[0084] The cable routing recess 15 of the central part 1 is preferably arranged in the region of an imaginary neutral fiber or zero line of the spectacles 5, in particular of the temple 13 and the frame 11. In particular, the cable 17 preferably runs along the imaginary neutral fiber or zero line. Stretching and / or compression of the cable 17 is then preferably minimal when pivoting the temple 13 relative to the frame 11 from the wearing position to the rest position and back.

[0085] Fig. 4 shows an exploded view of a detail of a second embodiment of the spectacles 5 with a second embodiment of the central part 1. The cable 17 has been omitted for clarity. In this second embodiment, the frame 11 and the temple 13 are narrower, and the central part 1 is also narrower. The screw connection elements 35 and 37 are designed as through-holes that extend from the top side 25 to the bottom side 27 of the central part 1.Accordingly, in comparison to the first embodiment according to Figure 2, only two longer screws 46 are provided, each of which, in the assembled state, completely penetrates an associated through-bore of the central part 1, selected from the first screw connection element 35 and the second screw connection element 37, wherein the screws 46 are each inserted through the through-bores 49 into the associated spectacle elements. The spectacle elements, in turn, have mating connection elements 51, although here only one mating connection element 51 of the temple 13 is visible to the observer. These mating connection elements 51 are designed as threads with which the screws 46 cooperate to connect the central part 1 to the spectacle elements in an articulated manner.

[0086] Fig. 5 shows a representation of a third embodiment of a central part 1. The central part 1 has at least one first cooling structure 53 on the outer side 21, in particular on the outer wall 23, in particular at least one first cooling fin 55, preferably a plurality of first cooling fins 55. For the sake of clarity, only one of the first cooling fins 55 is identified here with the corresponding reference numeral.

[0087] In the embodiment shown here, the central part 1 additionally has at least one second cooling structure 57, in particular at least one second cooling fin 58, preferably a plurality of second cooling fins 58, on the inner side 19, in particular on the inner wall 20.

[0088] Fig. 6 shows a representation of a detail of a third embodiment of a pair of spectacles 5 with the central part 1 according to Fig. 5. In this third embodiment, the spectacles 5 have a first partial recess 59 on the temple 13, and they also have a second partial recess 61 on the frame 11.

[0089] In a) it is shown that the partial recesses 59, 61 are pivoted away from each other in the rest position so that the first cooling structure 53 is freely accessible.

[0090] In b), it is shown that the partial recesses 59, 61 are pivoted relative to one another in the wearing position such that they jointly form a heat dissipation recess 63 through which the first cooling structure 53 is accessible from an external environment 65 of the goggles 5. In this way, heat can be dissipated from the first cooling structure 53 through the heat dissipation recess 63 into the external environment 65.

[0091] Fig. 7 shows a detail of a fourth exemplary embodiment of spectacles 5 with the central part 1 according to Figure 5, wherein the spectacles are shown in a) the resting position and in b) the wearing position. In this fourth exemplary embodiment of the spectacles 5, the temple 13 has a first heat dissipation recess 67, which establishes a first fluidic connection to the outer side 21 of the central part 1 and thus to the first cooling structure 53, wherein at the same time the frame 11 has a second heat dissipation recess 69, which establishes a second fluidic connection to the first cooling structure 53. Overall, this creates a flow path through which air can flow from the external environment 65 via the first fluidic connection to the first cooling structure 53 and exit back into the external environment 65 via the second fluidic connection.In this way, a cooling air flow can be realized over the first cooling structure 53. The air flow can, of course, also take the opposite path, i.e., flow into the first cooling structure 53 via the second fluidic connection and exit back into the external environment 65 via the first fluidic connection. In this embodiment, the outer side 21 and thus also the first cooling structure 53 of the central part 1 are visually concealed from the observer in the carrying position.

Claims

REQUIREMENTS 1. Central part (1) for a spectacle hinge (3), comprising a first pivot area (7) configured to pivot about a first pivot axis (Al) to a frame (11) of spectacles (5), a second pivot area (9) configured to pivot about a second pivot axis (A2) to a temple (13) of the spectacles (1), and a cable guide recess (15) penetrating the central part (1) perpendicular to the pivot axes (A1,A2) and configured to guide a cable (17) from the temple (13) to the frame (11) through the central part (1), wherein the cable guide recess (15) is open at least on one side in the direction of the pivot axes (A1,A2).

2. Central part (1) according to claim 1, wherein the central part (1) has an inner side (19) facing the face of a wearer of the glasses (5) when mounted on a pair of glasses (5) and an outer side (21) facing away from the wearer's face, wherein the cable guide recess (15) is closed towards the outer side (21).

3. Central part (1) according to one of the preceding claims, wherein the central part (1) has at least in one pivot area (7, 9), selected from the first pivot area (7) and the second pivot area (9), a first detent element (31) for defining a rest position of the temple (13) and a second detent element (33) for defining a wearing position of the temple (13).

4. Central part (1) according to one of the preceding claims, wherein at least one locking element (31, 33), selected from the first locking element (31) and the second locking element (33), is designed as a locking recess.

5. Central part (1) according to one of the preceding claims, wherein the central part (1) has a first detent element in the first pivot area (7) and in the second pivot area (9). (31) for defining the rest position of the temple (13) and a second locking element (33) for defining the wearing position of the temple (13).

6. Central part (1) according to one of the preceding claims, wherein the central part (1) has a top (25) and a bottom (27) viewed in the direction of the joint axes (A1,A2), wherein the central part (1) has at least in one pivot area (7,9), selected from the first pivot area (7) and the second pivot area (9), preferably in each of the pivot areas (7,9), at least on one side, selected from the top (25) and the bottom (27), preferably each on the top (25) and on the bottom (27) or continuously from the top (25) to the bottom (27), a screw connecting element (35,37) for producing the articulated connection with the respective associated spectacle element, selected from the temple (13) and the frame (11).

7. Central part (1) according to one of the preceding claims, wherein the screw connection element (35, 37) is designed as a thread or as a through hole.

8. Central part (1) according to one of the preceding claims, wherein the central part (1) is formed from a metal or a plastic, preferably in a metal powder injection molding process or plastic injection molding process, a sintering process, or an additive manufacturing process.

9. Central part (1) according to one of the preceding claims, wherein the cable guidance recess (15) is open on a first side and closed on an opposite second side in the direction of the joint axes (A1,A2), wherein the central part (1) has a bottom area (29) for the cable guidance recess (15) on the second side.

10. Eyeglasses (5), comprising a frame (11) and an eyeglass temple (13), wherein the eyeglass temple (13) is pivotably connected to the frame (11) via a central part (1) according to any one of claims 1 to 9 between a rest position and a wearing position.

11. Eyeglasses (5) according to claim 10, wherein the frame (11) is pivotally connected to the central part (1) in its first pivot area (7), wherein the temple (13) is pivotally connected to the central part (1) in its second pivot area (9), and wherein the The frame (11), the central part (1) and the temple (13) together form a hinge (3) of the glasses (5).

12. Eyeglasses (5) according to one of claims 10 or 11, wherein at least one eyeglass element, selected from the temple (13) and the frame (11), has an elastically prestressed counter-locking element (39, 41) which is configured to interact with the first locking element (31) of the central part (1) associated with the eyeglass element to define the rest position, and to interact with the second locking element (33) of the central part (1) associated with the eyeglass element to define the wearing position.

13. Glasses (5) according to one of claims 10 to 12, wherein the counter-locking element (39, 41) is designed as a spring-loaded piston guided in a receiving bore (43), wherein the first locking element (31) and the second locking element (33) are each designed as locking recesses into which the spring-loaded piston is pressed under preload in the respective associated functional position, selected from the rest position and the wearing position.

14. Glasses (5) according to one of claims 10 to 13, wherein in the cable guide recess (15) of the central part (1) a cable (17), in particular an electrical cable or an optical cable, is guided from the temple (13) to the frame (11).

15. Glasses (5) according to one of claims 10 to 14, wherein the cable (17) is designed as a flat ribbon cable or as an FPC connector.