KR101369111B1 - Tilt hinge and electronic apparatus with the tilt hinge - Google Patents

Abstract

In order to provide a tilting hinge that can be obtained by a small size and a small size with a simple configuration, a cylindrical cylinder with a bottom portion having a short length and a small diameter mounted on one side of the first and second housings that can be opened and closed, A flange member installed at the open end side of the cylinder and mounted on the other side of the first and second housings, and a hinge shaft and a precushion function fixed to either cylinder or the flange member and rotatably axially supported on the other side; A pre-cushion cam mechanism having a suction function, the pre-cushion cam mechanism is provided with a first cam member provided on the bottom of the cylinder or on one side of the flange member, and a hinge shaft is inserted into the central axis of the first cam portion. A cam member having a second cam portion on the side opposite to the one side, the cam member being slidably and non-rotating in the cylinder, and the first cam portion and the second cam portion; It was composed of an elastic means to press contact with.

Description

Tilt hinge and electronic apparatus with the tilt hinge}

The present invention is capable of opening and closing the device body, which is the first housing, and the display device, which is the second housing, in a small electronic device such as a mobile phone, an electronic dictionary, a toe book, a personal data assistant (PDA), a car navigation device, and the like. It relates to a tilt hinge and a electronic device provided with the tilt hinge.

As described above, in small electronic devices such as mobile phones, electronic dictionaries, notebook computers, PDAs, car navigation devices, and the like, the display device, which is the second housing, is attached to the device body, which is the first housing, to be opened and closed by using the switchgear. . As the opening and closing device, a tilt hinge is used for obtaining the display device by stopping and holding the display device at an arbitrary angle with respect to the apparatus body.

As this kind of tilt hinge, the thing similar to what was described in following patent documents 1-3 is proposed, for example. These tilt hinges are rotatably supported on the hinge shafts on which the display apparatus is mounted, the hinge shafts on which the display apparatus is mounted, while being rotatably supported on the brackets and the brackets mounted on the apparatus main body, and also on the hinge shafts. It is installed on the rotating precushion disc and the hinge shaft that rotates together with the hinge shaft while being movable in the axial direction of the fixed precushion disc and the hinge shaft, which are constrained to the bracket. A plurality of countersunk springs are provided, and the thrust direction friction force is generated on the sliding surface of the precushion disk, and the display device is stopped at an angle with respect to the device body by the precushion torque generated by the action of the friction force. I was supposed to.

The tilt hinge described in these Patent Documents 1 to 3 is provided between the fixed precushion disk and the hinge shaft support portion between the jaw and the fixed precushion disk or the hinge shaft support portion, and the fixed precushion disk and the counter spring. By installing the rotating precushion discs between them and increasing the sliding area between the hinge shaft and the bracket, the required precushion torque can be created, so that the length in the radial direction can be shortened even if the length in the axial direction is increased. It has been used in small electronic devices as described above.

In recent years, however, miniaturization and thinning of electronic devices have been further progressed, and it is desired that the tilt hinge can cope with this. In order to meet this request, if the tilt hinge is to be miniaturized, the diameter of the precushion disc must be made smaller, so that the required precushion torque can be obtained between the precushion discs in order to reduce the precushion area. In order to press hardly, the compression coil spring must be used as an elastic means. In doing so, there was a dilemma that the length of the tilt hinge would increase, making it impossible to answer the request for miniaturization.

[Prior Art Literature]

[Patent Literature]

[Patent Document 1] Patent No. 3655498

[Patent Document 2] Patent No. 3402317

[Patent Document 3] Japanese Patent Application Laid-Open No. 2001-12451

The present invention has been made to solve the problems and dilemmas of the conventional tilt hinge as described above, and in addition to the small size of the hinge, the axial length is also shortened, and the necessary precushion torque can be provided to answer the request for miniaturization. It is to provide a small tilt hinge that can be created.

In order to achieve the above object, the tilt hinge according to the present invention described in claim 1 is short in length with a small diameter attached to either one of the first housing and the second housing that are connected to each other so as to be open and close to each other. A cylindrical cylinder including a bottom portion, a flange member provided on the open end side of the cylinder and mounted on the other remaining portions of the first housing and the second housing, and installed in the axial direction of the center of the cylinder; And a pre-cushion cam mechanism fixed to one of the cylinders or the flange member, rotatably axially rotatable on the other side, and a pre-cushion cam mechanism having a pre-cushion function and a suction function. The first cam portion provided on either the bottom portion of the flange member or one side of the flange member and the hinge shaft are inserted in the axial direction of the central portion thereof to face the first cam portion. A cam member having a second cam portion on the side and slidably or non-rotating in the axial direction in the cylinder, and elastic means provided in the cylinder to press-contact the first cam portion and the second cam portion to each other; It is characterized by.

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

The tilt hinge according to claim 3 is characterized in that the cam member is slidably axially and non-rotating in the cylinder, so that the cam member is engaged with the hinge shaft.

The tilt hinge according to claim 4 is characterized in that the cam member is engaged with the cylinder when the cam member is slidably axially and non-rotating in the cylinder.

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

The tilt hinge according to claim 6 is characterized in that each of the first and second cam portions has a flat upper surface.

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

The electronic device according to the present invention according to claim 8 is provided with the tilt tilt hinge as described in any one of claims 1 to 7.

The tilt hinge according to claims 1 to 7 having the above-described configuration is a simple configuration of small parts and a configuration that can be made small or small in diameter, from a predetermined closing angle with respect to the first housing of the second housing. The suction function can be provided during the closing operation or the opening operation from the predetermined opening angle, and furthermore, it is possible to stop and stop free-stop at the operating opening angle with respect to the first housing of the second housing. will be.

The electronic device of Claim 8 is obtained by providing the electronic device utilizing the advantage of the tilt hinge of any one of Claims 1-7.

1 is a perspective view of an electronic device using a tilt hinge according to the present invention.
2 is an external perspective view of the tilt hinge according to the present invention, (a) is a perspective view seen from one side, and (b) is a perspective view seen from the other side.
3 is a cross-sectional view along the central axis of the tilt hinge according to the present invention.
4 is an exploded perspective view of the tilt hinge according to the present 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.
6 is an explanatory view divided along the central axis in order to explain the operation of the precushion cam mechanism of the tilt hinge according to the present invention.
7 is a cross-sectional view along a central axis showing another embodiment of the tilt hinge according to the present invention.
8 is a cross-sectional view along a central axis showing still another embodiment of the tilt hinge according to the present invention.
9 is a cross-sectional view along a central axis showing still another embodiment of the tilt hinge according to the present invention.

Example

EMBODIMENT OF THE INVENTION Below, the Example of the tilt hinge which concerns on this invention is described based on drawing. In the following description, an electronic dictionary is described as an electronic device by way of example. However, the electronic device according to the present invention includes not only the electronic dictionary but also mobile phones, PDAs, car navigation devices, notebook computers, and other electronic devices.

[Example 1]

1 shows, for example, an electronic dictionary 2 using a tilt hinge according to the present invention and an enlarged tilt hinge 1 provided at a portion of the A city. This electronic dictionary 2 has a first housing 21 in which a keyboard portion 21a is provided and a second housing 22 in which a display device 22a is provided, on the upper surface of the device body. The tilt hinge according to the present invention is used as an opening / closing hinge for supporting the first housing 21 and the second housing 22 so as to be openable and openable. In this example, the cylinder 11 of the tilt hinge 1 is fixed to the hinge attaching portion 211 of the first housing 21 of the electronic dictionary 2, and the hinge attaching portion 221 of the second housing 22 is fixed. The first housing 21 and the second housing 22 of the electronic dictionary 2 are connected to each other so that the flange member 124 of the tilt hinge 1 can be opened and closed with each other. In addition, the cylinder 11 may be mounted on the second housing 22 side, and the flange member 124 may be mounted on the first housing 21 side.

As shown in FIGS. 1 to 6, the tilt hinge 1 of the present invention has a cylindrical cylinder 11 having a bottom portion 112, a flange member 124, a hinge shaft 12, and a cam member 13. ) And elastic means (14) made of a plurality of dish springs (14a) to (14e), so that the cylinder (11) and the flange member (124) are relatively rotatable using the hinge shaft (12). Consists of.

Although the cylinder 11 is shown in an enlarged manner, in reality, the cylinder 11 has a small diameter and a short bottomed cylindrical shape such as an outer diameter of 5 mm or less and a length of 10 mm or less, and is illustrated (especially FIG. 5). As shown, the bottom part 112 is provided in one side of the cylindrical eastern part 111 which has the inner peripheral surface 114 and the outer peripheral surface 115, and the opening part 117 is provided in the other. The axial hole 116 of the front end side of the hinge shaft 12 is provided in the axial direction of the center part of the bottom part 112. As shown in FIG. In addition, the first cam portion 113 is integrally formed on the inner surface side of the bottom portion 112, and acts as the second cam portion 133 formed on the cam member 13 to be described later, thereby generating precushion torque, tilting motion, A predetermined function such as a suction operation is achieved. In order to achieve these functions, the first cam portion 113, in particular, as shown in Fig. 5, has a pair of upper portions 1131 and a pair of upper portions having a flat upper portion provided at equal intervals by sandwiching the bearing holes 116. The same shaft hole 116 is sandwiched between 1113 and a pair of flat portions 1132 having equally spaced bottom portions and each inclined portion 1133 from each of the convex portions 1131 to the respective convex portions 1132. Formed. In addition, there are no limitations on the arrangement position, the shape, the size, and the like of the recess portion 1131 and the recess portion 1132.

In addition, on the outer circumferential surface 115 of the cylinder 11, a tone stopper 1151 for stopping the circumference when it is mounted in the mounting hole 212 (see Fig. 3) of the hinge mounting portion 211 is the cylinder 11. The outer circumferential surface 115 is removed in the axial direction so that a pair is formed at the opposite position. With this configuration, the outer diameter of the cylinder 11 does not become wider, and the smaller size of the tilt hinge 1 can also contribute to the smaller size. Moreover, although the cylinder 11 is normally made of sintered metal, it is not necessarily limited to this.

The flange member 124 is provided so as to close the opening portion 117 side of the cylinder 11. The outer diameter of this flange member 124 is substantially the same as the cylinder 11, and is inserted and held in the mounting hole 222 provided in the hinge attaching part 221 of the 2nd housing 22. As shown in FIG. In order to prevent the rotation in the mounting hole 222 at the opposite position of the outer periphery of the flange member 124, a pair of fabric stoppers 126 for preventing rotation are provided in the axial direction by removing the outer peripheral surface thereof. have.

On one side of the flange member 124, the hinge shaft 12 protrudes integrally. The flange member 124 and the hinge shaft 12 may be made of a sintered metal molded in one piece, but are not limited thereto. For example, the flange member 124 and the hinge shaft 12 may be formed by lathe machining. The hinge shaft 12 has a main shaft portion 121, and as shown in Figs. 3 and 4, on which the elastic means 14 and the cam member 13 made of a plurality of counter-springs 14a to 14e are mounted. The cylinder 11 is inserted into the cylinder 11 along the central axis of the cylinder 11. The front end of the main shaft portion 121 rotatably penetrates the axial hole 116 provided in the bottom portion 112 of the cylinder 11, and the precushion washer 15 is protruded from the axial hole 116. The caulking part 128 (refer FIG. 2, FIG. 3) is formed by caulking the front-end | tip part of the main shaft part 121 on the fitting. The precushion washer 15 is provided with a deformation hole 152 for inserting and engaging the deformation end of the hinge shaft 12 in the main body portion 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 having a circular right angled cross section. The plate springs 14a to 14e constituting the resilient means 14 of the plurality of sheets (five in the illustrated embodiment) fitted to the mounting portion 122 are each shovels of a circular shape, as shown in FIG. The plate springs 14a to 14e have through holes 141a to 141e and the insertion portions 122 of the hinge shafts 12 are inserted into the insertion holes 141a to 141e. It is mounted on the mounting portion 122 of the hinge shaft 12 so as to be displaceable in the axial direction thereof. That is, the mounting portion 122 of the hinge shaft 12 in such a state that the deformation of the dish spring itself due to the increase or decrease of the axial pressing force with respect to the dish springs 14a to 14e of the elastic means 14 is allowed freely. Mounted on the

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

In addition, spring washers and rubber members are included as the elastic means other than the counter-spring, which is preferably used in the present invention, and the elastic means having a high modulus of elasticity can be formed in a small space.

The front end side of the hinge shaft 12 is formed as the cam member mounting portion 123, and four spline holes 127 extending in the axial direction are formed on the outer circumferential surface thereof, and the cam member 13 is hinged. The cam member mounting portion 123 of the shaft 12 is movable in the axial direction and is held so as not to rotate relative to the hinge shaft 12. That is, the shape of the shaft right angle cross section of the hinge shaft insertion hole 132 of the cam member 13 is not circular, and the cam member mounting portion 123 of the hinge shaft 12 having the four spline holes 127 is formed. It is formed in a generally cross shape corresponding to the axial right sectional shape, whereby the cam member 13 and the hinge shaft 12 do not rotate relatively.

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 the first surface of the inner surface of the bottom portion 112 of the cylinder 11 is formed. The second cam portion 133 is formed on the surface facing the first cam portion 113. In addition, in the illustrated embodiment, as shown in FIG. 4, the second cam portion 133 has a pair of flat and wide upper portions 1331 having a flat top and a wider width with the hinge shaft insertion holes 132 inserted therebetween. The same hinge shaft insertion hole 132 is sandwiched between the pair of convex portions 1331, and each of the convex portions is formed from a pair of flat and narrow convex portions 1332 and each convex portion 1331 at the bottom portions provided at equal intervals. It is formed of the inclined portion 1333 toward the portion 1332. In addition, the arrangement position, the shape, the size, and the like of the recess portion 1331 and the recess portion 1332 are normally associated with the first cam portion 113, but there is no limitation. The shapes of the first cam portion 113 and the second cam portion 133 may be interchanged. The cam member 13 exerts a force toward the distal end side of the hinge shaft 12 by the counter-springs 14a to 14e of the elastic means 14, and the cam member 13 The two cam portions 133 are pressed against the first cam portion 113 on the inner surface of the bottom of the cylinder 11 and tightened. The cam member 13 is also usually made of sintered metal, but may be manufactured by forging, casting or other means.

In such a configuration, when the cylinder 11 and the flange member 124 are rotated relatively to the hinge shaft 12 to the point, the cam member 13 is connected to the cylinder 11 together with the hinge shaft 12. Rotate relative to Accordingly, the cylinder 11 and the hinge shaft correspond to the shape of both 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 which is pressed against and tightened thereto. Rotational torque between (12) changes. At this time, the cam member 13 is placed on the cam member mounting portion 123 of the hinge shaft 12 in the axial direction thereof under the action of the spring force of the counter springs 14a to 14e of the elastic means 14. And slide in accordance with the shape of the second cam portion. Therefore, the precushion cam mechanism 17 is comprised by the 1st cam part 113 of the cylinder 11, the 2nd cam part 133 of the cam member 13, and the elastic means 14. As shown in FIG. The cylinder 11 is filled with grease for lubrication, not shown, as needed.

The shape of the first cam portion 113 and the second cam portion 133 is such that when the first housing 21 and the second housing 22 come to a predetermined closing angle, the elastic means 14 thereafter. It is formed so as to automatically rotate (so-called suction operation) to the closed position by the restoring force of the disc springs 14a to 14e. In addition, the specific shape of the first cam portion 113 and the second cam portion 133 can be in various forms, for example, the starting position of the suction operation, the magnitude of the rotation torque of the second housing 22, and other various shapes. Depending on the design conditions, the design is changed in various ways.

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

The cylinder 11 of the tilt hinge 1 is inserted into and fixed in the mounting hole 212 provided in the hinge mounting portion 211 of the first housing 21, which is naturally connected to be opened and closed with each other, so that the flange member 124 is It is inserted and fixed in the mounting hole 222 provided in the hinge attaching portion 221 of the second housing 22.

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

When the second housing 22 is gradually opened with respect to the first housing 21 from this closed state, the hinge member 12 integrally with the flange member 124 rotates little by little, and the hinge shaft 12 and The convex part 1331 of the second cam part 133 of the cam member 13 which rotates out of the convex part 1132 of the first cam part 113 of the inner surface of the bottom part 112 of the cylinder 11, The inclined portion 1133 of the first cam portion 113 and the inclined portion 1333 of the second cam portion 133, which gradually rise and fall on the convex portion 1131, are formed, but at this time, the cam member 13 is elastic In contrast to the elasticity of the counter-springs 14a to 14e of the means 14, it is gradually separated from the bottom 112 of the cylinder 11 (see Fig. 6).

Therefore, in order to open the second housing 22 in this state, the inclined portion 1133 of the first cam portion 113 and the inclined portion 1333 of the second cam portion 133 are pressed by the elastic means 14. It is necessary to open with a relatively strong force against the frictional resistance between the frictional force (forms a precushion torque) and the frictional resistance between the precushion washer 15 and the outside of the bottom portion 112 of the cylinder 11. If the hand is released from the second housing 22 in this state, the second housing 22 returns to its original closed state by the restoring force of the counter-springs 14a to 14e of the elastic means 14.

When the second housing 22 is opened to a predetermined angle, the upper part 1331 of the second cam part 133 and the upper part 1131 of the first cam part 113 come into contact with each other, and there are a little upper surfaces there. Even if the flat convex portion 1331 and 1131 come into contact with each other and come into contact with each other, the friction force is generated, and even when the hand is released in the middle by the friction force and the friction force of the precushion washer 15, the second housing 22 The first housing 21 is stopped freely at any opening and closing angle.

When the second housing 22 is further opened, the convex portion 1331 of the second cam portion 133 of the cam member 13 is opened in the next convex portion 1132 of the first cam portion 113 in a deployed state. With the restoring force of the counter-springs 14a to 14e of the elastic means 14, the proximal portion 1331 is automatically infiltrated into the proximal portion 1132 by the suction function, and the second housing 22 is to be locked in an open state. This open angle is 180 ° in the example.

When closing the 2nd housing 22 of a developed state, it reverses the said operation and it returns to the original closed state. Also in the step immediately before reaching the closed state, the convex portion 1331 of the second cam portion 133 is the first cam portion 113 by the restoring force of the counter-springs 14a to 14e of the elastic means 14. In order to automatically penetrate into the convex portion 1132, the suction operation during the closing operation is performed.

[Example 2]

In Fig. 7, another embodiment of the tilt hinge according to the present invention is shown in a sectional view along its central axis. In the tilt hinge 1A of the second embodiment, the boss 124a penetrating the inside of the cylinder 11 is formed in the flange member 124, and the shim when the cylinder 11 and the flange member 124 rotate relative to each other. It is possible to prevent and obtain misalignment. The same components as those of the first embodiment and the other components are given the same reference numerals.

[Example 3]

8, yet another embodiment is shown. In the first embodiment, the hinge shaft 12 and the flange member 124 are integrally formed, but in the tilt hinge 1B of the third embodiment, the hinge shaft 120 is independent of the flange member 1240. It is configured as. That is, for example, a deformation shaft portion 1243 having an elliptical shape in cross section is generally formed on the flange member 1240 side of the hinge shaft 120, and the deformation mounting hole 1244 having the deformation shaft portion 1243 provided on the flange member 1240 is provided. ), The hinge shaft 120 is fixed to the flange member 1240 by forming a caulking portion 1245 to caulk the exposed side end. The other end portion of the hinge shaft 120 is rotatably held at the bottom portion 112 of the cylinder 11 by the caulking portion 1246 using the precushion washer 150 as in the above embodiment. .

Example 4

9, yet another embodiment is shown. In the tilt hinge 1C of the fourth embodiment, an elliptical hinge having a cross section formed by shaving both sides including the head 341 using the axial hole 333 on the bottom 331 side of the cylinder 33. The shaft 34 is inserted between the head 341 and the bottom 331 with the precushion washer 35 interposed therebetween, and the tip thereof is fixed to the flange member 36. The fixing means is fixed by caulking its exposed end to form a caulking portion 342 through a deformation attaching hole 361 provided with an elliptical hinge shaft 34 in the flange member 36. have. Then, the boss portion 362 fitted into the cylinder 33 is provided on the flange member 36 side, and the first cam portion 363 is provided on the boss portion 362, and the cam member 37 is formed by the shaft. The hinge shaft 34 is rotatably inserted into the insertion hole 371 provided in the core axial direction, and a pair of guide teeth 373 provided at opposite positions of the outer circumference thereof is mounted on the inner wall of the cylinder 33. Non-rotation and slidability are provided by engaging with the pair of guide spheres 334. The cam member 37 has the 2nd cam part 372 in the side which opposes the 1st cam part 363. As shown in FIG. The structure of the 1st cam part 363 and the 2nd cam part 372, and the structure of the elastic means 14 which consist of dish springs 14a-14e are the same as that of Example 1. Even if it is comprised together, the objective of this invention can be achieved.

The electronic device according to the present invention (including the electronic dictionary 2, a mobile phone, a PDA, a navigation device, a notebook computer, and other small electronic devices) includes the tilt hinge 1 as described above. It is to be made, and to become an electronic device utilizing the advantages of the tilt hinge as described above.

In addition, the present invention is not limited to the above embodiment, but is a shape of a cylinder or a hinge shaft, a means for attaching a hinge shaft to a cylinder, a shape of a concave portion and a concave portion of the first and second cam portions, and a shape of a plate spring of the elastic means. The number of sheets, the number of sheets, and the like are appropriately changed according to the purpose of use of the tilt hinge, the use situation, and the like. Therefore, the present invention includes all modified embodiments included in the claims.

As described above, the present invention has a simple configuration, can produce a necessary precushion torque with a small diameter and a small size, and has various small and thin electrons in that it has a suction function with respect to the first housing of the second housing thereon. As a tilt hinge which connects the 1st housing | casing of a device and a 2nd housing so that opening and closing is possible, and an electronic device using this tilting hinge, it is widely applicable.

1, 1A, 1B, 1C: Tilt hinge
2: Electronic dictionary (electronic device)
11, 33: cylinder
12, 120, 34: hinge shaft
13, 37: cam member
14 elastic means
14a ~ 14e: Dish spring
17: Pre-cushion cam mechanism
21: first housing
22: second housing
113, 363: 1st cam part
124, 1240, 36: flange member
133, 372: 2nd cam part
211, 221: hinge mounting
1131, 1331:

Claims (8)

A cylindrical cylinder having a bottom portion at one end side of the first housing and the second housing connected to each other so as to be openable and close to each other, and having an opening provided at the other end side, and the opening side of the cylinder. A flange member installed at the other side of the first housing and the second housing and installed in the axial direction of the center of the cylinder, the one end of which is fixed to either the cylinder or the flange member, An end portion is formed from a hinge shaft rotatably axially axially oriented in one of the cylinder or the flange member, and a precushion cam mechanism having a precushion function and a suction function. The bottom portion of the cylinder and the first cam portion provided on either side of the one side of the flange member and the hinge shaft, The cam member which is inserted in the direction and has a second cam portion on the side opposite to the first cam portion, and is slidably and non-rotating in the axial direction in the cylinder, and the first cam portion and the second cam portion are mutually different. Tilt hinge, characterized in that composed of elastic means provided in the cylinder to make a pressure contact state. The tilt hinge according to claim 1, wherein the hinge shaft is provided integrally with the cylinder or the flange member or separately from the cylinder or the flange member. The tilt hinge according to claim 1, wherein the cam member is slidably and non-rotating in the axial direction in the cylinder to engage the cam member with the hinge shaft. The tilt hinge according to claim 1, wherein the cam member is slidably and non-rotating in the cylinder in the axial direction to engage the cam member with the cylinder. The tilt hinge according to claim 1, wherein the first cam portion is provided in the flange member, and the second cam portion is provided in a bottom portion of the cylinder. The tilt hinge according to claim 1, wherein the first cam portion and the second cam portion are each formed of a concave portion and a concave portion, and each of the concave portions has a flat upper surface. The tilt hinge according to claim 1, wherein the elastic means is a spring, a spring washer, or a rubber member. An electronic device comprising the tilt hinge according to claim 1.

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