JP2012211629A - Tilt hinge, and electronic apparatus with the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tilt hinge whose diameter and size can be reduced with a simple configuration.SOLUTION: The tilt hinge is composed of: a bottomed hollow cylinder with a small diameter and a short length, mounted to one of the first and second cases openably connected; a flange member disposed at the opening side of the cylinder, and mounted to the other remaining one of the first and second cases; a hinge shaft fixed to either one of the cylinder or the flange member, and axially rotatably supported at the other; and a friction cum structure having a friction function and a suction function. The friction cum structure is constituted of: a cum member having a first cum part disposed at the cylinder bottom or one face of the flange member, and the second cum part disposed at a side facing the first cum, being penetrated with a hinge shaft in the central axis direction; and an elastic means for press-attaching the first cum part and the second cum part to each other.

Description

  The present invention relates to a device body as a first housing and a display as a second housing in a small electronic device such as a mobile phone, an electronic dictionary, a notebook computer, a PDA (Personal Data Assistant), a car navigation device, and the like. The present invention relates to a tilt hinge that connects an apparatus to each other so as to be openable and closable, and an electronic apparatus including the tilt hinge.

  In a small electronic device such as a mobile phone, an electronic dictionary, a notebook personal computer, a PDA, or a car navigation device as described above, the display device as the second housing has an opening / closing device with respect to the device body as the first housing. It is attached so that opening and closing is possible. As the opening / closing device, a tilt hinge is used for allowing the display device to be stopped and held at an arbitrary angle with respect to the apparatus main body.

  As this kind of tilt hinges, for example, those described in the following Patent Documents 1 to 3 have been proposed. The tilt hinges are mounted on the apparatus main body, are rotatably supported by the bracket and are mounted on the display device, and are movable in the axial direction of the hinge shaft and rotatable on the hinge shaft. The fixed friction disk restrained by the bracket, the rotary friction disk that is movable in the axial direction of the hinge shaft and rotates together with the hinge shaft, and the fixed friction disk and the rotary friction disk that are provided on the hinge shaft are mutually connected. A plurality of disc springs that are pressed against each other in the direction, and a frictional force in the thrust direction is generated on the sliding surface of the friction disk. The friction torque generated by this frictional force causes the display device to be of It was to be stopped and held in degrees.

  The tilt hinges described in these Patent Documents 1 to 3 are provided between the flange portion and the fixed friction disc or the hinge shaft support portion, between the fixed friction disc and the hinge shaft support portion, and between the fixed friction disc and the disc spring. Each of the two friction friction discs can be provided to create the necessary friction torque by increasing the sliding area between the hinge shaft and the bracket, so the radial length can be increased even if the axial length is increased. It can be shortened and has been used for such small electronic devices.

  However, in recent years, electronic devices have been further reduced in size and thickness, and a tilt hinge that can cope with this has been desired. In order to meet this requirement, if the diameter of the tilt hinge is reduced, the diameter of the friction disk must be reduced, and if this is done, the friction area will be reduced. Therefore, the compression coil spring must be used as the elastic means. Then. There is a dilemma that the length of the tilt hinge becomes longer and it becomes impossible to meet the demand for miniaturization.

Japanese Patent No. 3655498 Japanese Patent No. 3402317 JP 2001-12451 A

  An object of the present invention is to solve the above-described problems and dilemmas of a conventional tilt hinge, and it is possible to meet the demand for miniaturization by reducing the length of the hinge and reducing the axial length. In addition, we intend to provide a small tilt hinge that can create the necessary friction torque.

  To achieve the above object, a tilt hinge according to the present invention described in claim 1 has a small diameter and a length attached to either one of a first casing and a second casing that are connected to each other so as to be opened and closed. A cylindrical cylinder with a short bottom, a flange member provided on the open end side of the cylinder and attached to the other one of the first casing and the second casing, and an axial direction of the center of the cylinder A hinge shaft fixed to one of the cylinder and the flange member and rotatably supported on the other, and a friction cam mechanism having a friction function and a suction function. The first cam portion provided on either the bottom of the cylinder or one side of the flange member, and the hinge shaft are inserted in the axial direction of the central portion thereof, A cam member having a second cam portion on the side facing the first cam portion, slidable in the axial direction in the cylinder and provided non-rotatably, the first cam portion and the second cam portion And elastic means provided in the cylinder in order to bring them into pressure contact with each other.

  The tilt hinge according to claim 2 is characterized in that the hinge shaft is provided integrally with the cylinder or the flange member or separately.

  The tilt hinge according to claim 3 is characterized in that the cam member is engaged with the hinge shaft when the cam member is slidable in the axial direction in the cylinder and non-rotatably provided.

  The tilt hinge according to a fourth aspect is characterized in that the cam member is engaged with the cylinder when the cam member is slidable in the axial direction in the cylinder and non-rotatably provided.

  The tilt hinge according to claim 5 is characterized in that the first cam portion is provided on the flange member side.

  The tilt hinge according to claim 6 is characterized in that the upper surfaces of the convex portions of the first cam portion and the second cam portion are formed flat.

  The tilt hinge according to claim 7 is characterized in that the elastic means is a disc spring, a spring washer, or a rubber member.

  An electronic apparatus according to an eighth aspect of the present invention includes the tilt hinge according to any one of the first to seventh aspects.

  The tilt hinge according to claims 1 to 7 having the above configuration has a simple configuration with a small number of parts and a configuration that can be made small and have a small diameter, and a predetermined closure of the second housing with respect to the first housing. The suction function can be provided during the closing operation from the angle or during the opening operation from the predetermined opening angle, and the fleece is further used at the opening opening angle of the second casing relative to the first casing. The top can be stopped and held.

  According to an eighth aspect of the present invention, there is provided an electronic apparatus that takes advantage of the tilt hinge according to any one of the first to seventh aspects.

It is a perspective view of an electronic device using a tilt hinge according to the present invention. It is the external appearance perspective view of the tilt hinge which concerns on this invention, (a) is the perspective view seen from one side, (b) is the perspective view seen from the other side. It is sectional drawing along the central axis of the tilt hinge which concerns on this invention. It is a disassembled perspective view of the tilt hinge which concerns on this invention. It is a perspective view which shows the 1st cam part provided in the bottom part of the cylinder of the tilt hinge which concerns on this invention. FIG. 6 is an explanatory diagram viewed along the central axis in order to explain the operation of the friction cam mechanism of the tilt hinge according to the present invention. It is sectional drawing along the central axis which shows the other Example of the tilt hinge which concerns on this invention. It is sectional drawing along the central axis which shows the further another Example of the tilt hinge which concerns on this invention. It is sectional drawing along the central axis which shows the further another Example of the tilt hinge which concerns on this invention.

  Embodiments of a tilt hinge according to the present invention will be described below with reference to the drawings. In the following description, an electronic dictionary will be described as an example of an electronic device. However, the electronic device according to the present invention is not limited to an electronic dictionary, but includes a mobile phone, a PDA, a car navigation device, a notebook computer, and other electronic devices. It is included.

  FIG. 1 shows an enlarged view of, for example, an electronic dictionary 2 using a tilt hinge according to the present invention and a tilt hinge 1 installed in a portion A. The electronic dictionary 2 includes a first casing 21 provided with a keyboard portion 21a on an upper surface constituting a device main body, and a second casing 22 provided with a display device 22a. The tilt hinge 1 is used as an opening / closing hinge that supports the first casing 21 and the second casing 22 so as to be opened and closed. In this example, the cylinder 11 of the tilt hinge 1 is fixed to the hinge mounting portion 211 of the first housing 21 of the electronic dictionary 2, and the flange member of the tilt hinge 1 is fixed to the hinge mounting portion 221 of the second housing 22. By fixing 124, the first casing 21 and the second casing 22 of the electronic dictionary 2 are connected so as to be openable and closable. The cylinder 11 may be attached to the second housing 22 side, and the flange member 124 may be attached to the first housing 21 side.

  1 to 6, the tilt hinge 1 of the present invention includes a cylindrical cylinder 11 having a bottom 112, a flange member 124, a hinge shaft 12, a cam member 13, and a plurality of disc springs 14a to 14e. And the cylinder 11 and the flange member 124 are configured to be relatively rotatable via the hinge shaft 12.

  Although the cylinder 11 is illustrated in an enlarged manner, in practice, for example, the cylinder 11 has a bottomed cylindrical shape with a small diameter and a short length such as an outer diameter of 5 mm or less and a length of 10 mm or less (particularly FIG. 5). As described above, the bottom 112 is provided on one of the cylindrical body portions 111 having the inner peripheral surface 114 and the outer peripheral surface 115, and the opening 117 is provided on the other. A shaft support hole 116 on the distal end side of the hinge shaft 12 is provided in the axial direction of the center of the bottom 112. Further, a first cam portion 113 is integrally formed on the inner surface side of the bottom portion 112 and acts with a second cam portion 133 formed on a cam member 13 described later to generate friction torque, tilt operation, and suction operation. The predetermined functions such as these are achieved. In order to achieve these functions, as shown in FIG. 5 in particular, the first cam portion 113 includes a pair of convex portions 1131 having flat upper portions provided at equal intervals across the shaft support hole 116, and the pair of the first cam portions 113. Similarly, a pair of concave portions 1132 having flat bottom portions provided at equal intervals with the shaft support holes 116 sandwiched between the convex portions 1131 and inclined portions 1133 from the convex portions 1131 toward the concave portions 1132 are formed. ing. In addition, there is no limitation about the arrangement position, shape, size, and the like of the convex portion 1131 and the concave portion 1132.

  Further, on the outer peripheral surface 115 of the cylinder 11, there is a protrusion locking portion 1151 for preventing rotation when attached to the mounting hole 212 (see FIG. 3) of the hinge mounting portion 211, and the outer peripheral surface 115 of the cylinder 11. By deleting in the axial direction, a pair is formed at opposing positions. If comprised in this way, the outer diameter of the cylinder 11 will not spread, but it can contribute to the diameter reduction and size reduction of the tilt hinge 1. FIG. Further, the cylinder 11 is usually made of sintered metal, but is not necessarily limited thereto.

  The flange member 124 is provided so as to close the opening 117 side of the cylinder 11. The outer diameter of the flange member 124 is substantially the same as that of the cylinder 11, and is inserted and locked in the mounting hole 222 provided in the hinge mounting portion 221 of the second housing 22. In order to prevent the rotation in the mounting hole 222, a pair of protrusion locking portions 126 for preventing rotation in the axial direction are provided at opposite positions on the outer periphery of the flange member 124 by deleting the outer peripheral surface. ing.

  The hinge shaft 12 protrudes integrally from one side of the flange member 124. The flange member 124 and the hinge shaft 12 may be made of an integrally molded sintered metal, but are not limited to this, and may be a pulled object by lathe processing, for example. The hinge shaft 12 has a main shaft portion 121. As shown in FIGS. 3 and 4, the hinge shaft 12 is mounted with the elastic means 14 composed of a plurality of disc springs 14a to 14e and the cam member 13, and then the central axis of the cylinder 11 is mounted. Is inserted into the cylinder 11. The front end of the main shaft 121 passes through the shaft support hole 116 provided in the bottom 112 of the cylinder 11 in a rotatable manner, and the friction washer 15 is fitted to the front end protruding from the shaft support hole 116. The caulking portion 128 (see FIGS. 2 and 3) having an enlarged diameter is formed by caulking the tip portion. The friction washer 15 is provided with a deformation hole 152 through which the deformation tip of the hinge shaft 12 is inserted and engaged in the main body 151.

  The side close to the flange member 124 of the main shaft portion 121 of the hinge shaft 12 is formed as a mounting portion 122 whose axial cross section is circular. The disc springs 14a to 14e constituting the plurality of (five in the illustrated embodiment) elastic means 14 fitted to the mounting portion 122 are circular insertion holes 141a to 141e, respectively, as shown particularly in FIG. By inserting the mounting portion 122 of the hinge shaft 12 into the insertion holes 141a to 141e, the disc springs 14a to 14e are mounted on the mounting portion 122 of the hinge shaft 12 so as to be displaceable in the axial direction. ing. That is, the elastic spring 14 is mounted on the mounting portion 122 of the hinge shaft 12 in such a state that the deformation of the disk spring itself according to the increase / decrease of the axial pressure applied to the disk springs 14a to 14e of the elastic means 14 is freely allowed. Yes.

  In addition, the shape, the number, and the arrangement method of the disc springs 14a to 14e of the elastic means 14 are not limited to the illustrated embodiment, and various shapes and shapes can be used depending on conditions such as required elastic modulus and arrangement space. The number or arrangement form is possible. However, if the number is too large, it will not comply with the demand for downsizing the tilt hinge.

  Further, examples of the elastic means other than the disc spring that are preferably used in the present invention include a spring washer and a rubber member, and these can also constitute a space-saving and high elastic modulus elastic means.

  The front end side of the mounting portion 122 of the hinge shaft 12 is formed as a cam member mounting portion 123, and four spline grooves 127 extending in the axial direction are formed on the outer peripheral surface thereof, and the cam member 13 is connected to the hinge shaft. The cam member mounting portion 123 of 12 is movable in the axial direction and is held so as not to rotate with respect to the hinge shaft 12. That is, the shape of the hinge shaft insertion hole 132 of the cam member 13 is not circular but corresponds to the shape of the cam member mounting portion 123 of the hinge shaft 12 in which the four spline grooves 127 are formed. Thus, the cam member 13 and the hinge shaft 12 do not rotate relative to each other.

  As shown in FIG. 4, the cam member 13 is provided with the hinge shaft insertion hole 132 in the main body portion 131, and on the surface of the inner surface of the bottom portion 112 of the cylinder 11 facing the first cam portion 113. Two cam portions 133 are formed. In the illustrated embodiment, the second cam portion 133 has a pair of convex portions with a flat and wide upper portion provided at equal intervals across the hinge shaft insertion hole 132, particularly as shown in FIG. 1331, a pair of concave portions 1332 having a flat bottom and a narrow width, with the hinge shaft insertion holes 132 sandwiched between the pair of convex portions 1331, and from each convex portion 1331 toward each concave portion 1332 All of the inclined portions 1333 are formed. In addition, although the arrangement position, shape, size, and the like of the convex portion 1331 and the concave portion 1332 are generally related to the first cam portion 113, there is no limitation. Further, the shapes of the first cam portion 113 and the second cam portion 133 may be interchanged. The cam member 13 is urged toward the distal end side of the hinge shaft 12 by the disc springs 14 a to 14 e of the elastic means 14, and the second cam portion 133 on the front surface of the cam member 13 is the first inner surface of the bottom portion of the cylinder 11. One cam portion 113 can be brought into pressure contact. The cam member 13 is also usually made of sintered metal, but may be manufactured by forging, casting or other means.

  In the above configuration, when the cylinder 11 and the flange member 124 are rotated relative to the hinge shaft 12 as a fulcrum, the cam member 13 rotates relative to the cylinder 11 together with the hinge shaft 12. Accordingly, the cylinder 11 and the hinge are formed in accordance with the concavo-convex shape of the two cam portions of the second cam portion 133 formed on the cam member 13 and the first cam portion 113 formed on the cylinder 11 pressed against the second cam portion 133. The rotational torque with the shaft 12 changes. At this time, the cam member 13 has an uneven shape of the first and second cam portions in the axial direction on the cam member mounting portion 123 of the hinge shaft 12 under the action of the spring force of the disc springs 14a to 14e of the elastic means 14. Slide according to. Therefore, the first cam portion 113 of the cylinder 11, the second cam portion 133 of the cam member 13, and the elastic means 14 constitute a friction cam mechanism 17. The cylinder 11 is filled with lubricating grease (not shown) as necessary.

  The shapes of the first cam portion 113 and the second cam portion 133 are such that when the first casing 21 and the second casing 22 come to a predetermined closing angle, the plates of the elastic means 14 are thereafter used. The springs 14a to 14e are formed so as to automatically rotate (so-called suction operation) to the closed position by the restoring force of the springs 14a to 14e. The specific shapes of the first cam portion 113 and the second cam portion 133 can be various. For example, the starting position of the suction operation, the magnitude of the rotational torque of the second casing 22, other The design is changed in various ways according to various design conditions.

  Hereinafter, the function and effect of the tilt hinge 1 will be described.

  The cylinder 11 of the tilt hinge 1 is inserted into and fixed to a mounting hole 212 provided in the hinge mounting portion 211 of the first housing 21 to be connected to each other so as to be openable and closable, and the flange member 124 is hinged to the second housing 22. It is inserted and fixed in a mounting hole 222 provided in the mounting portion 221.

  When the first housing 21 and the second housing 22 are in a closed state, the convex portion of the second cam portion 133 of the cam member 13 is moved to the concave portion 1132 of the first cam portion 113 on the cylinder 11 side. Since 1331 is fitted and the second housing 22 is locked in a closed state with respect to the first housing 21, no other locking means is required.

  When the second casing 22 is gradually opened with respect to the first casing 21 from this closed state, the hinge shaft 12 integral with the flange member 124 rotates little by little and rotates together with the hinge shaft 12. The convex portion 1331 of the second cam portion 133 of the cam member 13 that moves away from the concave portion 1132 of the first cam portion 113 on the inner surface of the bottom portion 112 of the cylinder 11 and gradually runs onto the convex portion 1131 (of the first cam portion 113). The inclined portion 1133 and the inclined portion 1333 of the second cam portion 133 slide). At this time, the cam member 13 resists the elasticity of the disc springs 14 a to 14 e of the elastic means 14 and the bottom portion 112 of the cylinder 11. Will gradually go away (see FIG. 6). Therefore, in order to open the second housing 22 in this state, the friction between the inclined portion 1133 of the first cam portion 113 and the inclined portion 1333 of the second cam portion 133 that are pressed by the elastic means 14. It is necessary to open with a relatively strong force against the resistance (forming friction torque) and the frictional resistance between the friction washer 15 and the outside of the bottom 112 of the cylinder 11. If the hand is released from the second casing 22 in this state, the second casing 22 returns to the original closed state by the restoring force of the disc springs 14a to 14e of the elastic means 14.

  When the second housing 22 is opened to a predetermined angle and the convex portion 1331 of the second cam portion 133 and the convex portion 1131 of the first cam portion 113 are in contact with each other, both upper surfaces are flat and convex for a while. The parts 1331 and 1131 come into contact with each other and slide to generate a frictional force. Even if the hand is released halfway through the frictional force and the frictional force of the friction washer 15, the second casing 22 The first housing 21 is stopped and held in a free stop at an arbitrary opening / closing angle.

  When the second casing 22 is further opened, the convex portion 1331 of the second cam portion 133 of the cam member 13 reaches a position where it fits into the concave portion 1132 next to the first cam portion 113 in the fully opened state. By the restoring force of the disc springs 14a to 14e of the elastic means 14, the convex portion 1331 is automatically fitted into the concave portion 1132 by the suction function, and the second housing 22 is locked in the opened state. Become. This opening angle is 180 ° in the example.

  When closing the fully opened second casing 22, the procedure returns to the original closed state through a procedure reverse to the above operation. Even in the stage immediately before reaching the closed state, the convex portion 1331 of the second cam portion 133 automatically enters the concave portion 1132 of the first cam portion 113 by the restoring force of the disc springs 14 a to 14 e of the elastic means 14. Therefore, the suction operation during the closing operation is performed.

  FIG. 7 shows another embodiment of the tilt hinge according to the present invention in a sectional view along the central axis. In the tilt hinge 1A of the second embodiment, the flange member 124 is formed with a boss portion 124a that fits into the cylinder 11, so that misalignment can be prevented when the cylinder 11 and the flange member 124 rotate relative to each other. ing. Other components are the same as those in the first embodiment, and the same components are denoted by the same instruction symbols.

  FIG. 8 shows still another embodiment. In the first embodiment, the hinge shaft 12 and the flange member 124 are integrally formed. However, in the tilt hinge 1B of the third embodiment, the hinge shaft 120 is configured as an independent member from the flange member 1240. That is, a deformed shaft portion 1243 having, for example, a substantially elliptical cross section is formed on the flange member 1240 side of the hinge shaft 120. The deformed shaft portion 1243 is inserted into the deformed mounting hole 1244 provided in the flange member 1240, and its exposed end The hinge shaft 120 is fixed to the flange member 1240 by caulking the portion to form the caulking portion 1245. The other end portion of the hinge shaft 120 is a caulking portion 1246 via a friction washer 150 as in the previous embodiments, and is rotatably held on the bottom portion 112 of the cylinder 11.

  FIG. 9 shows still another embodiment. In the tilt hinge 1C of the fourth embodiment, a hinge shaft 34 having a substantially elliptical cross section formed by scraping both sides with a head portion 341 from the bottom portion 331 side of the cylinder 33 through a shaft support hole 333 is provided with the head portion 341 and the bottom portion. A friction washer 35 is interposed between the flange member 331 and the front end thereof is fixed to the flange member 36. The fixing means is fixed by passing a hinge shaft 34 having a substantially elliptical cross section through a deformation mounting hole 361 provided in the flange member 36 and caulking the exposed end to form a caulking portion 342. A boss portion 362 fitted into the cylinder 33 is provided on the flange member 36 side, a first cam portion 363 is provided on the boss portion 362, and a cam member 37 is provided in an insertion hole 371 provided in the axial direction of the shaft center portion. The hinge shaft 34 is rotatably inserted, and a pair of guide projections 373 provided at opposite positions on the outer periphery of the hinge shaft 34 are engaged with a pair of guide grooves 334 provided on the inner wall of the cylinder 33, thereby enabling non-rotation and axial direction. It is provided to be slidable. The cam member 37 is provided with a second cam portion 372 on the side facing the first cam portion 363. The configuration of the first cam portion 363 and the second cam portion 372 and the configuration of the elastic means 14 including the disc springs 14a to 14e are the same as those of the first embodiment. Even with such a configuration, the object of the present invention can be achieved.

  An electronic device according to the present invention (for example, in addition to the electronic dictionary 2, includes a mobile phone, a PDA, a car navigation device, a notebook computer, and other small electronic devices) includes the tilt hinge 1 as described above. Thus, the electronic device takes advantage of the tilt hinge as described above.

  The present invention is not limited to the above-described embodiments, and the shape of the cylinder and the hinge shaft, the means for attaching the hinge shaft to the cylinder, the shapes of the convex portions and the concave portions of the first and second cam portions, the plate of the elastic means The shape and number of the springs, etc. are appropriately changed in design depending on the purpose of use and usage of the tilt hinge, and therefore the present invention encompasses all the modified embodiments included in the claims. .

  As described above, the present invention has a simple configuration, has a small diameter and a small size, can create a necessary friction torque, and also has a suction function of the second casing with respect to the first casing. The present invention can be widely used as a tilt hinge that connects the first housing and the second housing of various thin electronic devices so as to be openable and closable and an electronic device using the tilt hinge.

1, 1A, 1B, 1C Tilt hinge 2 Electronic dictionary (electronic equipment)
11, 33 Cylinder 12, 120, 34 Hinge shaft 13, 37 Cam member 14 Elastic means 14a-14e Belleville spring 17 Friction cam mechanism 21 First housing 22 Second housing 113, 363 First cam portion 124, 1240 36 Flange members 133, 372 Second cam portions 211, 221 Hinge mounting portions 1131, 1331 Convex portions

Claims (8)

A cylindrical cylinder with a bottom having a small diameter and a short length, which is attached to either one of the first housing and the second housing which are connected to each other so as to be openable and closable,
A flange member provided on the open end side of the cylinder and attached to the other one of the first casing and the second casing;
A hinge shaft provided in the axial direction of the center of the cylinder, fixed to one of the cylinder or the flange member, and rotatably supported on the other;
It consists of a friction cam mechanism with a friction function and a suction function,
The friction cam mechanism includes a first cam portion provided on one of the bottom of the cylinder or one surface of the flange member, and the hinge shaft inserted through the central shaft in the axial direction. A cam member that has a second cam portion on the opposite side and is slidable in the axial direction in the cylinder and provided non-rotatably, and the first cam portion and the second cam portion are brought into pressure contact with each other. Therefore, the tilt hinge comprises elastic means provided in the cylinder.   The tilt hinge according to claim 1, wherein the hinge shaft is provided integrally with the cylinder or the flange member or separately.   2. The tilt hinge according to claim 1, wherein the cam member is engaged with the hinge shaft when the cam member is slidable and non-rotatable in the axial direction in the cylinder.   2. The tilt hinge according to claim 1, wherein the cam member is engaged with the cylinder when the cam member is slidable and non-rotatable in the axial direction in the cylinder.   The tilt hinge according to claim 1, wherein the first cam portion is provided on the flange member side.   The tilt hinge according to claim 1, wherein upper surfaces of the convex portions of the first cam portion and the second cam portion are formed flat.   2. The tilt hinge according to claim 1, wherein the elastic means is a disc spring, a spring washer, or a rubber member.   An electronic apparatus comprising the tilt hinge according to any one of claims 1 to 7.

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