JPH074130A - Tilt type hinge - Google Patents

Abstract

PURPOSE:To facilitate assembly due to a small number of parts and open the cover of an equipment easily. CONSTITUTION:In this tilt type hinge 5, the sliding part 3b shown in (b) is fitted to the column 3a-2 of a cam part 3a' shown in (a), a washer 3c is fitted as shown in (c) from the top to caulk the top end part of the column 3a-2 for assembling. A hexagon column 3a-1 is fitted in the cover of an equipment to fix a frame part 3b-1 on an equipment body with a set screw and mount it. When the cover is kept fully open, the spring projection 3b-3 of the sliding part 3b is fitted to one recessed part 3a-5 of the cam part 3a' with some play. When the cover is kept middle-open, the spring projection 3b-3 moves onto the cam surface 3a-4' to press the cam surface with spring force, restraining rotation by its dead weight of the cover with friction. With the cover closed and locked, the positions of two recessed parts 3a-6, 3a-6 are switched to each other, the spring projection 3b-3 is brought into contact with the boundary of the eccentric recessed part 3a-6 to energize the recessed part 3a-6 in such a direction as it fits to the spring projection 3b-3. As a result, the cover hops up when the locking is released.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tilt type hinge, and more particularly to a tilt type hinge that holds an opened lid at a stepless arbitrary opening angle and pops up the lid when the lid is opened. .

[0002]

2. Description of the Related Art Conventionally, there are electronic devices such as an electronic notebook as shown in FIGS. 8 (a) and 8 (b). 1A is a plan view of the electronic notebook 1 opened, and FIG. 1B is a side view. The main body 1a is provided with a large number of keys for data input, and the lid 1b is provided with a liquid crystal panel for data display. The lid 1b can be opened and closed arbitrarily as shown by an arrow A in FIG. 2B when the closing lock (not shown) is released. At this time, in order to support the lid 1b in the open position, usually, one of the two engaging portions of the main body 1a and the lid 1b, for example, the right engaging portion 1c shown in FIG. A hinge is attached.

As shown in FIG. 9 (a), this free-form hinge is composed of nine parts from the washer 2a to the support shaft 2i. As shown in FIG. 6B, these nine parts are assembled and the tip of the support shaft 2i is caulked to complete the hinge 2. FIG. 3C is a front view of the completed hinge 2. This hinge 2 is the right side engaging portion 1 of the electronic notebook shown in FIG. 8 (a).
It is attached to c by screwing.

10 (a) to 10 (c) show an enlarged view of the portion of the hinge 2 attached by screwing. Same figure (a) ~
The correspondence between each part shown in (c) and the numbers given to them is the same as in the case of FIGS. The figure (a) shows a state in which the lid 1b is opened flat, the figure (b) shows a state in which the lid 1b is partially opened, and the lid 1b in the figure (c) is closed.

In the state where the lid 1b shown in FIG. 1 (a) is opened flat, the slide pins 2f and 2g of the hinge 2 are in the recesses in the inner wall of the pressing cylinder 2c and are free from external force. Therefore, there is some play in the engagement between the lid 1b and the main body 1a. The hinge 2 is in the state shown in FIG.
The same applies to the case where b is closed.

On the other hand, in the state where the lid 1b shown in FIG. 1B is partially opened, the slide pins 2f and 2g are held by the pressing cylinder 2.
c It moves from the concave portion of the inner wall to the inner wall surface and is pressed from the inner wall surface. As a result, the lid 1b is fixed in position in a partially opened state.

[0007]

By the way, in the hinge 2 shown in FIG. 9, the pressing cylinder 2c is made of an elastic resin member with respect to the metallic slide pins 2f and 2g. A cylindrical leaf spring 2d applies an urging force from the outside to the inside of the pressing cylinder 2c to prevent deformation of the pressing cylinder 2c and effectively press the slide pins 2f and 2g. In this way, the slide pins 2f and 2
Since the holding cylinder 2c, which is constantly engaged with g by the friction, is a resin member, the change over time due to wear is fast, and therefore the tilt function for fixing the position of the lid 1b shown in FIG. There was a problem that it disappeared. Further, the resin member of the holding cylinder 2c has a large variation in characteristics due to temperature changes, and therefore the resistance value (engagement frictional force with the slide pins 2f and 2g) with respect to the rotational torque changes greatly with temperature, and a constant tilt function is obtained. There was a problem of not having. Also, the slide pins 2f and 2
The resistance value with respect to the above-mentioned rotational torque fluctuates greatly even if there is a slight difference in the fitting dimensions of g and the holding cylinder 2c.
Therefore, there is a problem that the design of the device and the hinge is greatly restricted.

Further, the hinge 2 in the same figure is composed of nine parts, and if the number of parts is large like b, not only the man-hours in the factory increase and the cost rises, but also part management. There is a problem in that it takes time and the cost also rises in this respect.

In addition to that, when used in a small electronic device such as an electronic notebook, the hinge must be small. In the case of such a small hinge, for example, in the case of the slide pins 2f and 2g (see FIG. 9 (a)), the dimension is 1 mm (millimeter),
It is extremely fine with a length of 5 mm. Of course, corresponding to these, the other seven parts are also small in size, so that they are not easy to handle at the time of assembling, which causes a problem that the efficiency of the assembling work is reduced.

Further, when the device is downsized and thinned, there is a problem that there is no clue when opening the lid, and the user is dissatisfied that the hand is slippery and it is difficult to open the lid. .

In view of the above conventional circumstances, an object of the present invention is to
An object of the present invention is to provide a tilt-type hinge that has a small number of parts, is easy to assemble, and can easily open a lid of a device.

[0012]

The present invention is applied to a tilt type hinge arranged in a rotation supporting portion of a device body and a lid body rotatably supported by the device body.

The tilt type hinge according to the invention of claim 1 is
A prism that fits into the rotation supporting portion of the device body or the lid,
A hinge cam part integrally formed with a cylinder coaxial with the prism and a cam part having two recesses on the cam surface, which is located between the prism and the cylinder in a brim shape, and a device body or a lid. A screw-fastening frame portion to be fixedly mounted on the rotation supporting portion, a spring portion having a hole which is connected to the screw-fastening frame portion at a right angle and fits into a cylinder of a hinge cam portion in the center, and a screw-fastening portion of the spring portion A hinge sliding part integrally formed with a cam engaging part projecting on the opposite side of the right angle connecting part with the frame part, and a hole in the center of the spring part of the hinge sliding part fits into the cylinder of the hinge cam part. And a washer that presses the hinge sliding part rotatably against the hinge cam part by caulking the cylindrical tip part of the hinge cam part.The spring part of the hinge sliding part is attached to the spring part of the hinge sliding part when the device body is opened. The protruding cam engagement part is the cam of the hinge cam part. Configured to hold the open angle steplessly lid to the device body by moving the cam surface off the fitting of the recess formed in the.

The cam portion of the hinge cam portion is, for example, in the shape of a dish as described in claim 2, and two fan-shaped concave portions centering on the shaft are respectively formed on the cam surface on which the dish-shaped cylinder is formed. It is formed so as to face each other. The cam portion of the hinge cam portion has a cylindrical shape, for example, and two concave portions are formed on the inner surface of the cylindrical portion so as to face each other around the axis.

Further, the two concave portions formed in the cam portion of the hinge cam portion are asymmetrical with respect to the cylinder, and the boundary between the concave portion and the cam surface is formed of a circular portion and an inclined portion.
When the lid is closed, the cam engaging portion projecting from the spring portion of the hinge sliding portion is disengaged from the engagement with the cam portion cam surface of the hinge cam portion, and once fitted into the concave portion, further moved. When the closed lid is unlocked by sliding up the inclined portion formed on the boundary of the other cam surface with the concave portion and stopping at the circular portion, the cam engaging portion is spring-loaded. By the urging force received from the portion, the slanted surface slides down from the stopped circular portion and fits into the concave portion, whereby the lid body is popped up.

[0016]

Therefore, in the tilt type hinge of the present invention, the hole in the center of the spring portion of the hinge sliding portion fits into the cylinder of the hinge cam portion,
The washer is fitted from above, and the hinge sliding portion is rotatably pressed against the hinge cam portion by caulking the cylindrical tip portion of the hinge cam portion. When the lid is opened, the cam engaging portion projecting from the spring portion of the hinge sliding portion disengages from the recess formed in the cam portion of the hinge cam portion and moves on the cam surface, so that the lid body moves. Is held at a stepless opening angle with respect to the device body.

When the lid is closed, the cam engaging portion of the spring portion stops on the circular portion formed on the boundary surface from the cam surface of the cam portion to the recess, so that the lid is closed and locked. When released, the cam engaging part slides down the slope from the circular part by the biasing force received from the spring to move and fit into the recess, and the hinge sliding part is rotated, thereby popping up the lid. .

[0018]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 (a) is an exploded perspective view of a tilt type hinge according to the first embodiment, FIG. 1 (b) is a perspective view of a completed assembly thereof, and a side view of the perspective view of the completed assembly is turned upside down. It is shown above the figure (c), and its front view is shown below the figure (c).

As shown in FIGS. 1 (a), (b) and (c), the tilt hinge 3 is composed of three parts, a hinge cam portion 3a, a hinge sliding portion 3b and a washer 3c. Hinge cam part 3
Reference character a denotes a prism 3a-1 having a hexagonal cross section that fits into a rotation support portion of a device lid to be described later, a cylinder 3a-2 coaxial with the prism 3a-1, and the prisms 3a-1 and 3a-. A circular cam portion 3a-3 located like a brim is integrally formed between the two. On the cam surface of the circular cam portion 3a-3 on which the cylinder 3a-2 is formed, two fan-shaped recesses 3a-5, 3 are formed.
a-5 'are formed so as to face each other around the axis. The cam surface is divided into two cam surfaces 3a-4 by these two recesses 3a-5 and 3a-5 '.

Further, the hinge sliding portion 3b is provided with a screwed frame portion 3b-1, which is fixed to the rotation supporting portion of the apparatus body,
A spring portion 3b-2 connected to the screwed frame portion 3b-1 at a right angle and a screwed frame portion 3 of the spring portion 3b-2.
On the side opposite to the right-angled connecting portion with b-1, a screwed frame portion 3b
-1 is integrally formed with a cam engaging portion 3b-3 which is provided to project in the opposite direction. At the center of the spring portion 3b-2, a hole 3b-4 that fits into the cylinder 3a-2 of the hinge cam portion 3a.
Is provided.

As shown in FIG. 2B, the hinge cam portion 3a
The washer 3c is fitted from above the central hole 3b-4 of the spring part 3b-2 of the hinge sliding part 3b is fitted to the circular cylinder 3a-2, and the tip end of the circular cylinder 3a-2 of the hinge cam part 3a is caulked. , Press the washer 3c, which causes the hinge slide 3b
Is rotatably pressed against the hinge cam portion 3a. In the figures (b) and (c), the cam engaging portion 3b-3 has a circular cam portion 3a-3.
3 shows a state in which the hinge cam portion 3a is rotated with respect to the hinge sliding portion 3b in the direction indicated by the broken line arrow B in the figure, the spring portion 3b-2 is formed. The protruding cam engaging portion 3b-3 moves onto the cam surface 3a-4 of the circular cam portion 3a-3 and strongly presses the circular cam portion 3a-3 via the cam surface 3a-4.

2 (a) and 2 (b), the tilt type hinge 3 is
The state attached to the electronic notebook is shown. FIG. 7A is a partial top view of the electronic notebook 4 opened, and FIG. 8B is its BB ′ arrow view. As shown in FIGS. 1A and 1B, the tilt hinge 3 is arranged on the right side engaging portion 4c between the main body 4a of the electronic notebook 4 and the lid 4b. The hinge sliding part 3b has a screwed frame part 3b-1 screwed to the main body 4a side, and the hinge cam part 3a has a prism 3a-1 fitted to the lid 4b side and fixed.

FIG. 3 (a) shows an enlarged view of the tilt type hinge 3 arranged on the right side engaging portion 4c of the electronic notebook 4. As shown in FIG. The figure shows that the cam engaging portion 3b-3 of the spring portion 3b-2 (hereinafter, simply referred to as the main body 4a side) of the hinge sliding portion 3b fixed to the main body 4a has a circular shape of the hinge cam portion 3a fixed to the lid 4b. The state is shown in which the cam portion 3a-3 (hereinafter, simply referred to as the lid 4b side) is fitted in the recess portion 3a-5. Then, there is some play in the fitting when the lid 4b is completely opened. In this state, the lid 4b can move up and down to some extent. Without this play, even if the lid 4b seems to be completely opened when the lid 4b is pressed downward (top surface of the desk) with a fingertip, the cam engaging portion 3b-3 and the cam surface 3a- of the tilt hinge 3 are not shown. Since the engagement friction with 4 is extremely strong, the rotational torque from the fingertip is absorbed by the distortion that tends to occur when the lid 4b is not a completely rigid body and is extremely thin. Therefore, the tilt hinge 3 does not rotate to the completely open position and stops at an incomplete rotation angle. Accordingly, when the fingertip is released and the distortion of the lid 4b returns, the lid 4b is lifted from the desk top surface by the angle at which the hinge rotation is incomplete, resulting in extremely poor stability. Due to the above play, the cam engagement portion 3b-before the lid 4b reaches the completely opened position.
3, the engagement between the cam surface 3a-4 and the cam surface 3a-4 is released, and the lid 4b is opened to the completely open position by its own weight. Further, by this, even if the document is placed on a place such as a desk where the documents are cluttered, which is not necessarily uniform, the document is well adapted to the place where it is placed, is stable, and is easy to use.

Next, FIG. 3B shows a state in which the lid 4b is partially opened. When the lid 4b is in the intermediate open state, the lid 4b and the recesses 3a-5, 3 on the lid 4b side are provided.
The a-5 'and the cam surface 3a-4 are rotated counterclockwise from the position shown in FIG. That is, the cam engagement portion 3b-3 on the main body 4a side is disengaged from the fitting with the recessed portion 3a-5 on the lid 4b side and moved onto the cam surface 3a-4. As a result, the cam engagement portion 3b-3 strongly presses the cam surface 3a-4, and the frictional resistance acting between the two prevents the lid 4b from sliding due to its own weight.

As a result, the tilt type hinge 3 has the lid 4
b can be held steplessly with respect to the device body 4a at an arbitrary opening angle. FIG. 6C shows a state in which the lid 4b is closed and a closing lock (not shown) is applied. The same figure (c) shows the lid 4b and the concave portion 3a on the lid 4b side.
5, 3a-5 'is in a state of being rotated by 180 degrees from the completely opened state shown in FIG. 3 (a), and the cam engaging portion 3b-3 on the main body 4a side is the concave portion 3a-5 on the lid 4b side. 'Is fitted. This fitting also has some play, and the lid 4b can be moved up and down by an angle corresponding to this play. Therefore, the lid 4
When opening b, it is easy to release the closing lock and slide the lid 4b up with the pad of the finger to make an opening. Also, insert the fingertip into this opening and pull the lid 4b open. Figure
It is easy to make the open state shown in (b) or (c).

As described above, by using the tilt type hinge 3 composed of only three parts, a wide variety of hinge functions can be achieved. Next, FIGS. 4 (a), (b) and (c) show a second embodiment of the present invention. The tilt hinge of this embodiment is also composed of three parts. The same figure (a) is a side view and a plan view of the hinge cam portion 3a ', the same figure (b) is a side view and a plan view of the hinge sliding portion 3b, and the same figure (c) is a tilt type hinge 5 of which assembly is completed. It is a side view and a front view. 1A, 1B, and 1C, the same components as those of the tilt hinge 3 shown in FIG. 1 are shown with the same numbers as in FIG.

In the tilt type hinge 5 of the second embodiment, as shown in FIG. 4 (a), the arrangement of the concave portion formed in the circular cam portion 3a-3 'of the hinge cam portion 3a' is shown in FIG. This is different from the configuration of the tilt type hinge 3 shown. That is, the recess 3a
When -5 is used as a reference, the concave portion 3a-6 facing the concave portion 3a-5 is not symmetrical about the axis but is displaced to the one side by the angle α.

On the other hand, the hinge sliding part 3 shown in FIGS. 4 (b) and 4 (c).
The configurations of b and the washer 3c are the same as the configurations of the components of the tilt hinge 3 shown in FIG. FIG. 3C shows the cam engaging portion 3
It shows a state in which b-3 is fitted in the concave portion 3a-5 of the circular cam portion 3a-3 '. Also in this case, the hinge cam portion 3
When a'rotates with respect to the hinge sliding portion 3b in the direction shown by the broken line arrow B in the figure, the cam engaging portion 3 of the hinge sliding portion 3b.
b-3 moves onto the cam surface 3a-4 'of the circular cam portion 3a-3', and the circular cam portion 3a- via the cam surface 3a-4 '.
Firmly press 3 '.

5 (a) to 5 (d) show a state in which the tilt type hinge 5 is arranged on the right side engaging portion 4c of the electronic notebook 4. As shown in FIG. In the same figure (a), the cam engaging portion 3b-3 on the side of the main body 4a has a lid 4b.
It shows a state of being fitted in the concave portion 3a-5 on the side. The presence of some play in this fitted state is the same as in the first embodiment.

FIG. 3B shows a state in which the lid 4b is closed and a closing lock (not shown) is applied. In this state, together with the lid 4b, the concave portions 3a-5, 3a- on the lid 4b side.
6 is a state in which the cam engaging portion 3b-3 on the main body 4a side is displaced by 180 degrees from the completely opened state shown in FIG. It abuts on a boundary portion 3a-6-1 between the cam surface 3a-4 'and the cam surface 3a-6' (see a side view of only the hinge shown on the right side of FIG. 3B). A strong pressing force is applied to this contact portion by the urging force of the spring portion 3b-2. The boundary portion 3a-6-1 has a cam surface 3a-
4'is composed of a circular portion and an inclined portion extending from the circular portion to the concave portion 3a-6, and the abutting portion of the cam engaging portion 3b-3 abutting on the circular portion is urged by the strong pressing force. The closing lock restrains the force of sliding down (sliding up in the figure) from the circular portion to the inclined portion and from the inclined portion to the concave portion 3a-6.

As shown in FIG. 3C, when the restraint by the closing lock of the lid 4b is released, the cam engaging portion 3b-3
And the contact portion of the boundary portion 3a-6-1 is the angle α shown in FIG. 4 (a).
Just slide. If the main body 4a is used as a reference (considered to be fixed on a desk), the boundary portion 3a-6-1 on the lid 4b side slides with respect to the cam engaging portion 3b-3 by an angle α, and the concave portion 3a-6 cams. It fits in the engaging portion 3b-3. The sliding causes the lid 4b to pop up by an angle α.

Therefore, when the lid 4b is opened, the opening lock is automatically opened simply by releasing the closing lock, and the lid 4b is pulled open by inserting a fingertip into the opening.
The open state shown in (d) can be easily achieved.

In the intermediate open state shown in FIG.
Similar to the case shown in (b), the cam engaging portion 3 on the main body 4a side
b-3 is disengaged from the fitting with the recess 3a-6 on the lid 4b side,
It moves to the cam surface 3a-4 ', and this cam surface 3a-4'
Is strongly pressed, and the frictional resistance generated thereby presses the lid 4
Prevent sliding due to the weight of b. As a result, the tilt hinge 5 can hold the lid 4b with respect to the device body 4a steplessly at an arbitrary opening angle.

Next, FIGS. 6A and 6B show a third embodiment of the present invention. 1A and 1B, the same components as those of the tilt type hinge 3 shown in FIG. 1 are designated by the same reference numerals.

As shown in FIG. 3A, the tilt type hinge 6 of the third embodiment is also composed of three parts, a hinge cam portion 6a, a hinge sliding portion 6b and a washer 3c. The hinge cam portion 6a is integrally formed with a prism 3a-1, a cylinder 3a-2, and a cylindrical cam portion 6a-1 located between the prism 3a-1 and the cylinder 3a-2 in a brim shape. Two concave portions 6a-2 are formed on the inner surface of the cylindrical cam portion 6a-1,
6a-3 are formed to face each other around the axis, and a cam surface 6a-4 is formed between the two recesses 6a-2 and 6a-3.

Further, the hinge sliding portion 6b includes a screw-fastened frame portion 3b-1, a spring portion 6b-1 which is connected to the screw-fastened frame portion 3b-1 at a right angle, and a semicircular spring 6b- of the spring portion 6b-1. The cam engaging portion 6b-3, which is provided to project at 2, is integrally formed. A hole 3b-4 that fits into the cylinder 3a-2 of the hinge cam portion 6a is provided at the center of the spring portion 6b-1.

As shown in FIG. 3B, the hinge cam portion 6a
The cylinder 3a-2 is fitted with the washer 3c from above the central hole 3b-4 of the spring portion 6b-1 of the hinge sliding portion 6b, and the tip end of the cylinder 3a-2 of the hinge cam portion 6a is caulked. , The washer 3c is pressed, and thereby the hinge sliding part 6b
Is rotatably pressed against the hinge cam portion 6a.

If this tilt type hinge 6 is arranged on the electronic notebook 4 like the tilt type hinge 3 shown in FIG. 1 and the lid 4b is closed or fully opened, the cam engaging portion 6b-3 becomes a cylindrical cam. The recess 6a-2 or 6a-3 of the portion 6a-1 is fitted with play to allow the lid 4b to freely move up and down at a constant angle. When the lid 4b is opened in the middle, the cam engaging portion 6b-
3 moves on the cam surface 6a-4 to generate frictional resistance, and the lid 4
b can be held steplessly with respect to the device body 4a at an arbitrary opening angle.

Further, the two concave portions 6a-2 and 6a-3 formed on the inner surface of the cylindrical cam portion 6a-1 are not symmetrically formed about the axial center but one concave portion is displaced by an angle α. Then, the lid 4b can be popped up when the lid 4b is opened.

Next, FIGS. 7A and 7B show a fourth embodiment of the present invention. 1A and 1B, the same components as those of the tilt type hinge 3 shown in FIG. 1 are designated by the same reference numerals.

As shown in FIG. 7A, the tilt type hinge 7 of the fourth embodiment is composed of four parts, that is, a hinge cam portion 7a, a hinge sliding portion 3b, a washer 3c and a shaft column 7a-2. It The hinge cam portion 7a is a screwed frame portion 7a.
-1, and a circular cam portion 3a-3 that is connected to the screwed frame portion 7a-1 at a right angle are integrally formed. Axis pillar 7
In a-2, only the cylinder 3a-2 of the hinge cam portion 3a in FIG. 1 is an independent component. Other components are the same as those of the tilt hinge 3 shown in FIG.

As shown in FIG. 7B, the shaft 7a-2 is
The hinge cam portion 7a and the hinge sliding portion 3b are sequentially fitted, the washer 3c is fitted from above, and the tip portion of the shaft column 7a-2 is caulked, and the washer 3c is pressed, whereby the hinge sliding portion 3b is moved. The hinge cam portion 7a is rotatably pressed.

When the tilt type hinge 7 is arranged in the electronic notebook 4, instead of the prism 3a-1 fitted in the engaging portion of the lid 4b, the screwed frame portion 7a-1 is attached to the lid 4b. It is screwed to the joint. In this state, the engagement state between the cam engagement portion 3b-3 and the circular cam portion 7a when the lid 4b is fully opened or closed is shown in FIGS. 3 (a) and 3 (c). -3 and the circular cam portion 3a (3a-5, 3a-5 ') are engaged with each other. Further, the engagement state between the cam engagement portion 3b-3 and the circular cam portion 7a when the lid 4b is opened in the middle is shown in FIG.
The cam engaging portion 3b-3 shown in (b) and the circular cam portion 3a (3
a-4) is the same as the engaged state, that is, the lid 4b
Can be continuously held at an arbitrary opening angle with respect to the device body 4a.

Also in the case of this embodiment, the circular cam portion 3a is formed.
Two concave portions 3a-5, 3a- formed on the cam surface of -3.
5'is not formed symmetrically with respect to the axial center, and one recess 3a-
By disposing 5'displaced by an angle α, the lid 4b can be popped up when the lid 4b is opened.

In the first, second and third embodiments described above, the cross section of the prism of the hinge cam portion is hexagonal, but it is not limited to hexagonal and can be fitted and fixed to the equipment. Any cross section may be used.

[0046]

As described above in detail, according to the present invention, since the tilt hinge composed of three or four decimal components is used, the number of steps is small and the labor can be saved, thus reducing the cost. Further, since the number of parts is small, it is easy to manage parts, and the management cost is also reduced in this respect.
Further, since the structure of each part is integrally formed and integrated into 3 or 4 parts, even a small hinge can be easily handled, and therefore the efficiency of the assembling work is increased.
Further, since the resistance force to the turning torque can be adjusted by the degree of crimping of the tip of the cylinder having a simple structure, it is possible to freely design without being restricted. Further, since the hinge cam portion and the hinge sliding portion, which are always engaged by frictional force for fixing the position of the lid, are metal members, they are less likely to be worn, and therefore the tilt function can be maintained for a long period of time with little change over time. Further, since the hinge cam portion and the hinge sliding portion are both metal members, there is almost no characteristic change at room temperature, and therefore deterioration of the tilt function due to temperature can be eliminated. Further, since one concave portion of the cam surface is displaced and arranged, when the lid is opened, the lid pops up to automatically provide a clue of the opening, and therefore, the device can be miniaturized and thinned. Also, the user can easily open the lid.

[Brief description of drawings]

1A is an exploded perspective view of a tilt type hinge according to a first embodiment, FIG. 1B is a perspective view of a completed assembly thereof, and FIG. It is a front view.

FIG. 2A is a partial top view of the electronic notebook with the tilt hinge according to the first embodiment opened, and FIG. 2B is a BB ′ arrow view thereof.

FIG. 3A is a diagram illustrating a state in which the lid of the electronic notebook provided with the tilt hinge of the first embodiment is completely opened, and FIG. 3B is a diagram illustrating a state in which the lid is opened halfway. , (C) are views for explaining a state in which the lid is closed and locked.

4 (a), (b) and (c) are views showing a tilt type hinge of a second embodiment. FIG.

5A is a diagram illustrating a state in which a lid of an electronic notebook provided with a tilt hinge of the second embodiment is completely opened, and FIG. 5B is a diagram illustrating a state in which the lid is closed and locked; (c) is a diagram illustrating a pop-up of the lid, and (d) is a diagram illustrating a state in which the lid is partially opened.

6 (a) and 6 (b) are views showing a tilt type hinge of a third embodiment.

7 (a) and 7 (b) are views showing a tilt type hinge of a fourth embodiment.

8A and 8B are diagrams illustrating opening and closing of an electronic device such as an electronic notebook.

9A is an exploded perspective view of a conventional hinge, FIG. 9B is a perspective view of completed assembly, and FIG. 9C is a front view thereof.

10A to 10C are enlarged views of a state in which a conventional hinge is attached to a rotating portion of an electronic notebook.

[Explanation of symbols]

3, 5, 6, 7 Tilt type hinge 3a, 3a ', 6a, 7a Hinge cam part 3a-1 Square column 3a-2 Cylinder 3a-3, 3a-3' Circular cam part 3a-4, 3a-4 ', 6a- 4 Cam surfaces 3a-5, 3a-5 ', 3a-6, 6a-2, 6a-3
Recessed portion 3a-6-1 Boundary portion 3b, 6b Hinge sliding portion 3b-1, 7a-1 Screwed frame portion 3b-2, 6b-1 Spring portion 3b-3, 6b-3 Cam engagement portion 3b-4 Hole 3c Washer 4 Electronic notebook 4a Main body 4b Lid 4c Right side engaging portion 6a-1 Cylindrical cam portion 6b-2 Semi-circular spring 7a-2 Shaft column

Claims (4)

[Claims] 1. A tilt type hinge provided in a rotation support portion of a device body and a lid body rotatably supported by the equipment body, wherein the tilt hinge is fitted to the rotation support portion of the equipment body or the lid body. A prism that meets
A hinge cam part integrally formed with a cylinder coaxial with the prism, and a cam part located between the prism and the cylinder in a flange shape and having two recesses on a cam surface, and the device body or lid. A screw-fastened frame portion fixed to the rotation support portion of the body, a spring portion that is connected to the screw-fastened frame portion at a right angle, and has a hole at the center that fits into the cylinder of the hinge cam portion, and a spring portion of the spring portion. A hinge sliding part integrally formed with a cam engaging part projecting on the opposite side of the right-angled connecting part with the screwed frame part, and a center of a spring part of the hinge sliding part on a cylinder of the hinge cam part. And a washer that presses the hinge sliding portion rotatably against the hinge cam portion by caulking the columnar tip end portion of the hinge cam portion. When the body is opened, the spring of the hinge sliding part Of the hinge cam portion is disengaged from the recess formed in the cam portion of the hinge cam portion, and the cam surface is moved to open the lid steplessly from the device body. Tilt-type hinge that is held at an angle. 2. The cam portion of the hinge cam portion is dish-shaped, and two fan-shaped concave portions are formed to face each other about an axis on a cam surface on which the dish-shaped cylinder is formed. The tilt hinge according to claim 1, wherein the hinge is a hinge. 3. The tilt type according to claim 1, wherein the cam portion of the hinge cam portion has a cylindrical shape, and two concave portions are formed on an inner surface of the cylindrical shape so as to face each other around an axis. Hinge. 4. The two recesses formed in the cam portion of the hinge cam portion are asymmetrical about the cylinder, and the boundary between the recess and the cam surface is formed by a circular portion and an inclined portion, and the lid body is When closed, the cam engaging portion projecting on the spring portion of the hinge sliding portion disengages from the engagement with the cam portion cam surface of the hinge cam portion, and once moves into the concave portion and then further moves. When the inclined portion formed at the boundary of the other cam surface with the concave portion slides up and stops at the circular portion and the closed lid is unlocked, the cam engaging portion is a spring portion. The tilt type hinge according to claim 1, 2 or 3, wherein an urging force received from the sliding member slides down the slanted surface from the stopped circular portion to fit the recessed portion, thereby popping up the lid body. .