JP4138947B2 - Hinge device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a hinge device used for portable articles such as a cellular phone and an electronic notebook.
[0002]
[Prior art]
With the development of electronics technology in recent years, various portable devices such as mobile phones and electronic notebooks equipped with key panels and liquid crystal screens have been developed and have been widely put into practical use. These devices have a size that is easy to use during use, are compact when carried, and may accidentally press the key panel or damage the LCD screen in a bag or pocket. In order to prevent this from happening, a two-fold structure that allows opening and closing of the two members is employed.
For example, in a mobile phone, a main body member having operation keys arranged on one surface and a main body member rotatably connected to the main body member are folded to a position where the operation keys are covered while being carried, while being opened at the time of use. There is a two-fold type comprising an opening / closing member such as a transmitter that is arranged to enable key operation and function as a sound collecting member. Also, some electronic notebooks have a two-fold type consisting of a main body member on which operation keys are arranged and an opening / closing member such as a liquid crystal display unit that is opened and closed with respect to the main body member.
By the way, conventionally, in such a two-fold portable article, a hinge device is used to connect the main body member and the opening / closing member so as to be freely opened and closed. As the hinge device, for example, a pair of cams are provided so that their axes are aligned with each other so that they can rotate relative to each other, and can be moved toward and away from each other. It is known that one of the cams is rotatably provided on a shaft portion and the other cam is provided on the shaft portion so as to be movable along the axis.
[0003]
[Problems to be solved by the invention]
However, since the conventional hinge device requires a pair of cams, a shaft portion, and a biasing means, the number of parts is increased, and it takes time and effort to assemble and the structure is complicated. There is.
The present invention has been made in view of the above circumstances, and the object thereof is to reduce the number of parts by using the biasing means as one cam, and to assemble it easily. In addition, an object of the present invention is to provide a hinge device capable of simplifying the structure.
[0004]
[Means for Solving the Problems]
According to a first aspect of the present invention, a pair of cams are provided so as to be able to rotate relative to each other and to be close to and away from each other, and the cam surfaces of these cams are urged so as to be in close contact with each other. A hinge device for changing the angular relationship between the two cams by relatively moving the two cams along their axial lines when the two cams rotate relative to each other. One of the cams is constituted by a biasing means, and the base end portion of the biasing means is supported by a support member, and the tip of the biasing means passes through the other cam facing the support member, and this cam The urging means is pressed against the cam surface of the other cam by being engaged with the cam surface of the other cam.
According to a second aspect of the present invention, the pair of cams are provided so that their axis lines coincide with each other so that they can rotate relative to each other, and can approach and separate from each other, and the cam surfaces of these cams are urged so as to be in close contact with each other. A hinge device for changing the angular relationship between the two cams by relatively moving the two cams along their axial lines when the two cams rotate relative to each other. One of the cams is composed of a biasing means, and the biasing means is provided on the shaft portion of the support member, and the tip of the biasing means is pressed against the cam surface of the other cam facing the support member. Is.
According to a third aspect of the present invention, a pair of cams are provided such that their axis lines coincide with each other so that they can rotate relative to each other, and can approach and separate from each other, and the cam surfaces of these cams are urged so as to be in close contact with each other. A hinge device for changing the angular relationship between the two cams by relatively moving the two cams along their axial lines when the two cams rotate relative to each other. One of the cams is constituted by a biasing means, and the biasing means is provided inside the shaft portion of the support member, and this biasing means is pressed against the cam surface of the other cam facing the support member. Is.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 is a sectional view showing a first embodiment of the present invention, FIG. 2 is a right side view of FIG. 1, FIG. 3 is a left side view of FIG. 1, and FIG. 4 is taken along line IV-IV in FIG. It is sectional drawing.
In these drawings, reference numeral 10 denotes a spring member (biasing means). The spring member 10 is formed by bending a round bar-shaped wire, the base end portion 100 of the spring member 10 is curved in a loop shape, and the distal end 101 of the spring member 10 is in a perpendicular direction. It is bent. Further, at the base end portion 100 of the spring member 10 curved in a loop shape, as shown in FIG. The cylindrical projection 112 is inserted into the base end portion 100 and the projection 112 is fitted in the hole 113 of the other component member 111.
Further, the tip 101 side of the spring member 10 is inserted through the center hole 130 of the substantially disc-shaped cam 13 and is engaged with the cam groove 132 of the surface (cam surface) 131 of the cam 13. The cam groove 132 is formed in a straight line with the center hole 130 interposed therebetween. The center hole 130 of the cam 13 is formed in a state in which a deep groove 134 is formed along the center hole 130 in the cam 13 and the center hole 130 is left after the tip 101 side of the spring member 10 is mounted. The deep groove 134 is formed by backfilling with a closing member 136.
A circular recess 133 is formed on the back surface side (support member 11 side) of the cam 13, and a protrusion 114 formed on the support member 11 is fitted in the recess 133. Furthermore, shallow grooves 115 and 135 are formed on the outer peripheral surfaces of the support member 11 and the cam 13 at positions symmetrical with respect to their axes.
[0006]
In the hinge device configured as described above, when the cam 13 is rotated around its axis with respect to the support member 11, the tip 101 of the spring member 10 that has been caught in the cam groove 132 of the cam 13 until then is The cam 13 is elastically deformed in a direction away from the cam surface 131 and jumps out of the cam groove 132. As a result, since the engagement state between the cam groove 132 of the cam 13 and the tip 101 of the spring member 10 is released, the cam 13 biases the spring 13 against the support member 11. Rotates smoothly while resisting When the cam 13 rotates 180 degrees, the tip 101 of the spring member 10 is again fitted into the cam groove 132 of the cam 13 and the cam 13 and the spring member 10 are engaged. Thereby, in the portable article incorporating this hinge device, the opening / closing operation of the opening / closing member can be performed smoothly and reliably.
[0007]
5 and 6 show a second embodiment of the present invention. FIG. 5 is a front view and FIG. 6 is a cross-sectional view taken along line VI-VI in FIG.
Reference numeral 20 in the figure denotes a support member, and a head 200 of the support member 20 is attached to the fixed member 1. A deep groove 202 is formed in the shaft portion 201 of the support member 20 from the front end side to the intermediate portion, and a coil-shaped compression spring (biasing means) with the front end straight portion 210 fitted in the deep groove 202. 21 is attached to the shaft portion 201. A cam 22 attached to the movable member 2 is rotatably mounted on the shaft portion 201, and linear cam grooves 221 are formed on both end surfaces (cam surfaces) 220 of the cam 22. ing. Further, a compression spring 21 having the same configuration as that of the compression spring 21 is mounted on the shaft portion 201, and in the state where the pair of left and right compression springs 21 sandwich the cam 22, the straight end portion 210 of the distal end thereof is a cam groove. The cam 22 and the two compression springs 21 are engaged with each other by being fitted in 221. Further, a fixed member 203 is attached to the tip of the shaft portion 201, and this fixed member 203 is in a free (free fitting) state in the movable side member 2.
[0008]
In the hinge device configured as described above, when the movable side member 2 is opened and closed with respect to the fixed side member 1, the cam 22 rotates around its axis, and the compression spring 21 is retracted. The straight end portion 210 of the compression spring 21 that is stuck in the cam groove 221 of the cam 22 is pushed out from the cam groove 221. As a result, the engagement state between the cam groove 221 of the cam 22 and the straight end portion 210 of the compression spring 21 is released, so that the cam 22 presses both the cam surfaces 220 of the cam 22. Smooth rotation while resisting urging force. When the cam 22 is rotated 180 degrees, the compression spring 21 is extended, and the straight end portion 210 of the compression spring 21 is again fitted into the cam groove 221 of the cam 22 so that the cam 22 and the compression spring 21 are engaged. Thereby, opening / closing operation | movement of the movable side member 2 is performed smoothly and reliably.
[0009]
FIG. 7 is a front view showing a third embodiment of the present invention. This embodiment is the same as the second embodiment except that the compression spring 21 and the fixing member 203 on the distal end side of the shaft portion 201 are removed, and the other configuration is the same as that of the second embodiment. The same reference numerals are given and description thereof is omitted.
The hinge device configured as described above has the same effects as those of the second embodiment, can open and close the movable side member 2 smoothly and reliably, and reduces the number of parts. it can.
[0010]
8 is a front view showing a fourth embodiment of the present invention, FIG. 9 is a cross-sectional view of FIG. 8, and FIG. 10 is a cross-sectional view taken along line XX of FIG. In this embodiment, instead of the compression spring 21 of the second and third embodiments, a substantially U-shaped spring member (biasing means) 30 is mounted in the deep groove 202 of the support member 20, The deep groove 202 is closed by the fixing member 204 on the distal end side of the shaft portion 201.
In the hinge device configured as described above, when the movable side member 2 is opened and closed with respect to the fixed side member 1 as in the second and third embodiments, the cam 22 rotates around its axis. Then, the spring member 30 is elastically deformed in a direction in which both end portions thereof are separated from each other, and both end portions of the spring member 30 that have been stuck in the cam groove 221 of the cam 22 are pushed out from the cam groove 221. As a result, since the engagement state between the cam groove 221 of the cam 22 and both ends of the spring member 30 is released, the cam 22 is biased by the spring member 30 that presses both the cam surfaces 220 of the cam 22. Rotates smoothly while resisting Then, when the cam 22 rotates 180 degrees, both end portions of the spring member 30 fit into the cam groove 221 of the cam 22 again, and the cam 22 and the spring member 30 are engaged. Thereby, the movable side member 2 is opened and closed smoothly and reliably.
[0011]
【The invention's effect】
This onset Ming, a pair of cams, to match the axis of each other, relatively rotatable and close to each other, provided to be spaced, it cam surfaces of these cams are urged to close to each other, A hinge device that changes the angular relationship between the two cams by relatively moving along the axis of the two cams when the cams are relatively rotated. Since the cam is constituted by the biasing means, and this biasing means is pressed against the cam surface of the other cam, the biasing means is pressed against the cam surface of the other cam by the biasing force. When the biasing means and the other cam rotate relative to each other, the biasing means and the other cam can be moved relative to each other along their axes so that the angular relationship between them is smooth and reliable. Can be changed. Therefore, by using the urging means as one cam, the number of parts can be reduced, the assembly can be easily performed, and the structure can be simplified.
Then, a first aspect of the present invention, the base end portion of the biasing means is supported by the support member, the tip of the urging means, through the other cam to be opposed to the support member, the cam of the cam Since the other cam is sandwiched between the front end and the base end of the urging means, the urging force of the urging means causes the front end of the urging means to move to the other cam. When the leading end of the biasing means and the other cam rotate relative to each other, the leading end of the biasing means is moved along their axes according to the cam surface of the other cam. And the mutual angular relationship can be easily changed.
Further, Claim 2 of the present invention, the biasing means provided on the shaft portion of the support member, the tip of the urging means, in which pressed against the cam surface of the other cam facing the supporting member From the above, when the tip of the biasing means and the other cam rotate relative to each other by pressing the tip of the biasing means provided on the shaft portion of the support member against the cam surface of the other cam, The leading ends can be moved along their axes in accordance with the cam surface of the other cam, and the mutual angular relationship can be changed smoothly.
In the third aspect of the present invention, the biasing means is provided inside the shaft portion of the support member, and the biasing means is pressed against the cam surface of the other cam facing the support member. When the urging means provided in the shaft portion of the support member is pressed against the cam surface of the other cam, the urging means is moved to the other cam when the urging means and the other cam rotate relatively. In accordance with the cam surface, it can be moved along their axes, and the mutual angular relationship can be reliably changed.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing a first embodiment of the present invention.
FIG. 2 is a right side view of FIG.
FIG. 3 is a left side view of FIG. 1;
4 is a cross-sectional view taken along line IV-IV in FIG.
FIG. 5 is a front view showing a second embodiment of the present invention.
6 is a cross-sectional view taken along line VI-VI in FIG.
FIG. 7 is a front view showing a third embodiment of the present invention.
FIG. 8 is a front view showing a fourth embodiment of the present invention.
9 is a cross-sectional view of FIG.
10 is a cross-sectional view taken along line XX of FIG.
[Explanation of symbols]
10, 30 Spring member (biasing means)
11, 20 Support members 13, 22 Cam 21 Compression spring (biasing means)
100 Base end 101 Tip 131 Surface (cam surface)
201 Shaft portion 210 Tip straight portion 220 End face (cam face)

Claims (3)

A pair of cams are provided so that their axes coincide with each other so that they can rotate relative to each other and can be moved toward and away from each other, and the cam surfaces of these cams are urged so that they are in close contact with each other. The two cams move relative to each other along their axes to change the angular relationship between the two cams,
One of the two cams is composed of a biasing means, and a base end portion of the biasing means is supported by a support member, and a tip of the biasing means penetrates the other cam facing the support member. The hinge device is characterized in that the biasing means is pressed against the cam surface of the other cam by being engaged with the cam surface of the other cam. A pair of cams are provided so that their axes coincide with each other so that they can rotate relative to each other and can be moved toward and away from each other, and the cam surfaces of these cams are urged so that they are in close contact with each other. The two cams move relative to each other along their axes to change the angular relationship between the two cams,
One of the two cams is composed of a biasing means, the biasing means is provided on the shaft portion of the support member, and the tip of the biasing means is the cam surface of the other cam facing the support member. A hinge device that is pressed against the hinge. A pair of cams are provided so that their axes coincide with each other so that they can rotate relative to each other and can be moved toward and away from each other, and the cam surfaces of these cams are urged so that they are in close contact with each other. The two cams move relative to each other along their axes to change the angular relationship between the two cams,
One of the two cams is composed of a biasing means, and the biasing means is provided inside the shaft portion of the support member, and this biasing means is the cam surface of the other cam facing the support member. A hinge device that is pressed against the hinge.

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