JPH078909Y2 - Friction lock device - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention is used for adjusting the angle of a panel display of a laptop computer, word processor, etc., and for preventing falling of various lids such as an electric rice cooker and an electric pot. Also relates to a friction lock device that can be used.

[Prior Art] FIG. 6 (a) is a front view of a conventional hinge used for connecting a compact lid and a compact body used by women, and FIG. 6 (b) is a left side view thereof. FIG. 6 (c) is a right side view thereof, and FIG. 6 (d) is D- shown in FIG. 6 (c).
It is sectional drawing which follows the D line.

In FIG. 6 (a), 10 is a fixing member fixed to the compact body, and as shown in FIG. 6 (c) of the right side view, a plate-like member having a hole 10b in a substantially cylindrical member 10a. The mounting portion 10c is integrally formed.

The fixing member 10 is fixed to the body by inserting a screw into the hole 10b and tightening the screw into the compact body. Element
A hole 10d is penetrated in the axial direction passing through the center of 10a. 11
Is a movable member, and as shown in FIG. 6 (b) which is a left side view, the movable member 11 has a substantially cylindrical shape, and a convex portion 11a is provided at the center of one end face. A compact lid is attached to the convex portion 11a.

A hole 11b penetrates in the axial direction passing through the center of the movable member 11, and the spring pin 5 is press-fitted together with the hole 10d of the fixed member 10 as shown in FIG. 6 (d).

The movable member 11 rotates about the spring pin 5 as a rotation axis.

At this time, the rotational torque generated when the movable member 11 is rotated in both forward and reverse directions is obtained by utilizing the frictional force generated between the inner surface of the hole 11b of the movable member 11 and the outer surface of the spring pin 5. With this rotation torque, the compact lid can be stopped at any position.

[Problems to be Solved by the Invention] In the above-described conventional technique, even if there is a slight variation in the outer surface of the spring pin 5 and the inner surface of the hole 11b of the movable member 11, the rotational torque is greatly affected and the rotational torque is greatly affected. Has greatly varied.

For this reason, the above-mentioned conventional techniques cannot be used for those requiring precision.

Further, in the conventional technique, the same rotation torque is generated when the movable member 11 rotates in both the forward and reverse directions, and the movable member can be operated with a small operation force.
There was a problem that a large operating force was required even if 11 could be operated.

For example, in the case of preventing the lid from falling, it is desirable to prevent the lid from falling by requiring a large operating force to operate in the closing direction, and to require a small operating force to operate in the opening direction to facilitate opening. The conventional technique has a problem that a large operating force is required even in the operation in the opening direction.

In view of the above-mentioned problems, the present invention, even if the outer surface of the spring pin 12 or the inner surface of the hole 11b of the movable member 11 varies,
It is an object of the present invention to provide a friction lock device in which variations in rotational torque do not occur, rotational torque in one direction is small, and rotational torque in other directions is large.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a movable member, a shaft member that is press-fitted into a hole of the movable member and rotates integrally with the movable member, and a force input of the movable member. A fixed member in which the shaft member is press-fitted through a hole with a smaller pressure input, and a cover member that has the same outer diameter as the movable member and is rotatably externally inserted into the shaft member in series with the movable member. A connecting member that is connected to the rotating member, a coil spring that is externally inserted between the connecting member and the movable member with a tight margin, and the shaft member passes through the hole with a pressure input that is smaller than the pressure input to the movable member. And an adjusting member for adjusting the frictional force on the side of the fixed member by being press-fitted and joined to the fixed member.

[Operation] The fixing member is fixed to the main body of the laptop computer, and the connecting member is fixed to the panel display.

A coil spring is externally fitted to the connecting member and the movable member with a tight margin, and the winding direction is opposite to the direction in which the panel display is rotated to open it.

Therefore, when the panel display is opened with respect to the main body, the connecting member rotates. At this time, the rotating direction of the connecting member is opposite to the winding direction of the coil spring, and the coil spring is fastened to the movable member by the rotation of the connecting member. Therefore, the rotation of the connecting member is transmitted to the movable member, and the shaft member also rotates together with the movable member.

The rotation of the shaft member causes a frictional force on the shaft member, the fixed member, and the adjusting member coupled to the fixed member.

The magnitude of this frictional force can be adjusted by increasing or decreasing the adjustment member press-fitted into the shaft member, and a frictional force larger than the rotational torque generated by the weight of the panel display can be generated.

When a sufficiently large frictional force is generated, the rotational torque for rotating the panel display becomes large due to this frictional force, and if the operator rotates 90 ° or more to a position where the panel display can be seen, this rotation is performed. The panel display can be stopped at any position by the torque.

On the contrary, when the panel display is closed to the main body, the rotation direction is opposite to that when the panel display is opened, and the connecting member rotates in the same direction as the winding direction of the coil spring.
Therefore, the diameter of the coil spring is increased, and the rotation of the connecting member is not transmitted to the rotating member.

The connecting member can freely rotate with respect to the shaft member, and since the member that interlocks with the connecting member disappears due to the expanded diameter of the coil spring, the panel display rotates with a small rotational torque.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

The same components as those of the conventional technique are designated by the same reference numerals and the description thereof will be omitted.

In FIG. 1 (a), 1 is a friction lock device, which is a connecting device between a laptop personal computer and its panel display.

1 (a) is its front view, FIG. 1 (b) is its right side view, FIG. 1 (c) is its left side view, and FIG. 1 (d) is FIG. 1 (b). It is sectional drawing which follows the AA line in FIG.

Reference numeral 2 is a fixing member to which the main body of the laptop personal computer is attached, and is a front view of FIG. 2 (a), its left side view is FIG. 2 (b), and its right side view is second. As shown in FIG. 2 (d), which is a cross-sectional view taken along the line BB in FIGS. 2 (c) and 2 (c), a plate-shaped mounting portion 2a is integrally formed on a substantially cylindrical member 2c. Has been done.

An axial hole 2d passing through the center of the member 2c is penetrated, and one end face thereof is provided with a fan-shaped convex portion 2e having an angle that equally divides the end face.

The mounting portion 2a is provided with a hole 2b, and the fixing member 2 is fixed to the main body of the laptop computer by inserting a screw into the hole 2b and tightening the screw on the main body of the laptop computer.

The spring pin 5 is press-fitted into the hole 2d of the member 2c as shown in FIG. 1 (d).

Reference numeral 3 denotes an adjusting member adjacent to the fixing member 2, which is a front view of FIG. 3 (a), a right side view of FIG. 3 (b), and a line CC of FIG. 3 (b). As shown in FIG. 3 (c), which is a sectional view taken along the line, it has a substantially cylindrical shape, and a hole 3a is penetrated in the axial direction passing through the center thereof.

The diameter of the adjusting member 3 is the same as the member 2c of the fixed member 2,
On both end faces, a protrusion 3b having the same shape as the protrusion 2e provided on the end face of the member 2c is provided.

When the spring pin 5 is press-fitted into the hole 3a of the adjusting member 3, as shown in FIGS. 1 (a) and 1 (d),
2e and the convex portion 3b are arranged so as to be fitted alternately, and when the adjusting member 3 is added, the convex portions 3b are press fitted into the spring pin 5 so as to fit alternately.

Next to the adjusting member 3, a pressing member 4 is press-fitted to the spring pin 5 to prevent the adjusting member 3 from coming off. FIG. 4 (a) is a front view of the pressing member 4, and FIG. 4 is a left side view of the pressing member 4. As shown in (b), the pressing member 4 is a thick disk and has a hole 4a at its center. A spring pin 5 is press-fitted into the hole 4a as shown in FIGS. 1 (a), 1 (b) and 1 (d).

Further, the movable member 6 is press-fitted adjacent to the fixed member 2 of the spring pin 5, and the force input thereof is larger than the force input of the spring pin 5 press-fitted into the fixed member 2 and the adjustment member 3.

The movable member 6 has a columnar shape as shown in FIGS. 1 (c) and 1 (d), and has a hole 6a penetrating in the axial direction passing through the center.

Further, a connecting member 7 is rotatably externally attached to the spring pin 5 adjacent to the movable member 6. The connecting member 7 is its front view, FIG. 5 (a), and its right side view, FIG.
As shown in FIG. 5 (b) and its left side view, FIG. 5 (c), it has a substantially cylindrical shape, and a hole 7a penetrates in the axial direction passing through the center. One end of the connecting member 7 is cut out at a position facing each other by a plane parallel to its axial direction.

A panel display 7b of a laptop personal computer is attached to the connecting member 7 as shown in FIG. 1 (d).

A pressing member 8 is press-fitted adjacent to the connecting member 7, and as shown in FIG. 1 (c) which is a left side view of the friction lock device 1, the pressing member 8 is a thick disk and has a central portion. In the hole
8a is provided. The spring pin 5 is press-fitted into the hole 8a, and the pressing member 8 prevents the connecting member 7 from coming off.

A coil spring 9 having a tight margin is externally inserted between the connecting member 7 and the movable member 6, and the coil spring 9 is right-handed.

Therefore, when the panel display 7b is rotated counterclockwise from the main body of the laptop computer, the connecting member 7 is also rotated counterclockwise as shown in FIG. The spring 9 is entangled with the rotation of the connecting member 7 to tighten the movable member 6 and transmit the rotation of the connecting member 7 to the movable member 6.

Since the force input for pressing the spring pin 5 into the movable member 6 is larger than the force input for pressing the spring pin 5 into the adjusting member 3 and the fixed member 2, the spring pin 5 and the movable member 6
Rotate together, and the rotation of the spring pin 5 causes a frictional force between the spring pin 5 and the fixing member 2 and the adjusting member 3.

Since this frictional force is sufficiently large and is larger than the rotational torque generated by the weight of the panel display 7b, the panel display 7b is stationary if no force is applied to the panel display 7b.

The frictional force is press-fitted into the spring pin 5 and the adjusting member 3
The size can be adjusted by the number of.

When the panel display 7b is rotated clockwise to close it, the connecting member 7 is rotated clockwise as shown in FIG. 1 (c). When the connecting member 7 rotates to the right, the coil spring 9 rotates in the same direction as the winding direction, and thus the coil spring 9 rotates.
Of the connecting member 7 is not transmitted to the movable member 6.

Therefore, since the connecting member 7 can freely rotate with respect to the spring pin 5, the rotational torque becomes small.

In addition to the spring pin 5, a hollow shaft or a tapered shaft may be used as the rotating shaft.

[Effects of the Invention] As described above in detail with reference to the embodiments, according to the present invention, the rotational torque of the component that rotates with respect to other components such as the lid is large in one direction and is large in the opposite direction. Can be made smaller.

Therefore, if the rotating torque is rotated in a large direction, parts such as the lid will not move unless there is a large force, so it is possible to prevent these parts from falling or to stop these parts during rotation. Available and has a wide range of uses.

[Brief description of drawings]

1 (a) is a front view of a friction lock device according to an embodiment of the present invention, FIG. 1 (b) is a right side view thereof, FIG. 1 (c) is a left side view thereof, and FIG. ) Is a sectional view taken along the line AA of FIG. 1 (b), FIG. 2 (a) is a front view of the fixing member, and FIG.
FIG. 2B is a left side view thereof, FIG. 2C is a right side view thereof, FIG. 2D is a sectional view taken along the line BB of FIG. 2B, and FIG. ) Is a front view of the adjusting member device, FIG. 3 (b) is a right side view thereof, FIG. 3 (c) is a sectional view taken along the line CC of FIG. 3 (b), and FIG. 4 (a). Is a front view of the pressing member, FIG. 4 (b) is a left side view thereof, FIG. 5 (a) is a front view of the connecting member, FIG. 5 (b) is a right side view thereof, and FIG. 5 (c). Is a left side view thereof, FIG. 6 (a) is a front view of a conventional friction lock device, FIG. 6 (b) is a left side view thereof, and FIG. 6 (c) is a right side view thereof, FIG. 6D is a sectional view taken along the line D-D in FIG. 6C. In the figure, 1 ... Friction lock device, 2 ... Fixing member, 3 ... Adjusting member, 4,
8 ... Pressing member, 5 ... Spring pin, 6 ... Movable member,
7 ... Connection member, 9 ... Coil spring.

Claims (1)

[Scope of utility model registration request] 1. A movable member, a shaft member that is press-fitted into a hole of the movable member and rotates integrally with the movable member, and the shaft member is press-fitted through the hole with a pressure input smaller than that of the movable member. Fixed member, a connecting member that has the same outer diameter as the movable member and is connected in series to the movable member, and is connected to a rotated member that is rotatably inserted on the shaft member, and the connecting member. A coil spring externally inserted to the movable member with a tight margin, and the shaft member is press-fitted through the hole with a pressure input smaller than the pressure input to the movable member, and the shaft member is joined to the fixed member to cause friction on the fixed member side. A friction lock device comprising an adjusting member for adjusting force.