JP4040720B2 - Shaft locking device and rotation mechanism using this shaft locking device - Google Patents

Shaft locking device and rotation mechanism using this shaft locking device Download PDF

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Publication number
JP4040720B2
JP4040720B2 JP16272097A JP16272097A JP4040720B2 JP 4040720 B2 JP4040720 B2 JP 4040720B2 JP 16272097 A JP16272097 A JP 16272097A JP 16272097 A JP16272097 A JP 16272097A JP 4040720 B2 JP4040720 B2 JP 4040720B2
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JP
Japan
Prior art keywords
portion
member
shaft
locking device
hinge
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP16272097A
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Japanese (ja)
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JPH116520A (en
Inventor
逸男 安田
博 池田
Original Assignee
日本発条株式会社
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Priority to JP16272097A priority Critical patent/JP4040720B2/en
Publication of JPH116520A publication Critical patent/JPH116520A/en
Application granted granted Critical
Publication of JP4040720B2 publication Critical patent/JP4040720B2/en
Anticipated expiration legal-status Critical
Application status is Expired - Fee Related legal-status Critical

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Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a shaft lock for supporting a member that rotates around a shaft portion, such as a hinge portion of a panel display of a notebook or desktop personal computer or a word processor, or a hinge portion of a rotating member of various machines / equipment. The present invention relates to a rotation mechanism using a device and a shaft locking device.
[0002]
[Prior art]
2. Description of the Related Art A desktop information processing apparatus such as a laptop or laptop personal computer has a panel display that is rotatable with respect to its main body via a hinge. An example of a conventional hinge part includes a base fixed to the main body part, a shaft member fixed to the panel display, a friction plate and a spring for applying a friction torque to the rotational motion of the shaft member, and the like. This kind of hinge part can stop the panel display at a desired angle by frictional torque, but cannot produce a sense of movement (a so-called click feeling) at a desired position (rotation angle). There was room for improvement in the feeling.
[0003]
Based on such a request, the shaft locking device 1 shown in FIG. 42 has been developed. In this shaft locking device 1, a shaft 4 is inserted into a hole 3 formed in a base member 2 so as to be relatively rotatable, and a friction torque is applied to the rotational motion of the shaft 4 by a friction plate 5 and a spring 6. In addition, a click hole 7 and a convex portion 8 are provided in the mutually opposing portion of the base member 2 and the friction plate 5, and when the base member 2 and the shaft 4 reach a predetermined relative rotation angle, the convex portion as shown in FIG. When the portion 8 is engaged with the click hole 7, a click feeling is obtained.
[0004]
[Problems to be solved by the invention]
However, the shaft locking device 1 has a problem that looseness due to play between the click hole 7 and the convex portion 8 easily occurs when the convex portion 8 is fitted in the click hole 7. The backlash tends to appear more prominently as the load applied to the shaft locking device 1 increases, that is, as the liquid crystal panel display becomes larger and heavier.
[0005]
On the other hand, in a personal computer or the like equipped with a relatively large liquid crystal panel display, it is desired to switch the panel display between a horizontal position and a vertical position according to the display contents. That is, as shown in FIG. 41 (A), the panel display is rotated about the longitudinal axis so that the panel display can be switched between a horizontal position and a vertical position as shown in FIG. A rotation mechanism that can be rotated in the range of 90 ° in the direction of arrow Y has been desired.
[0006]
Accordingly, it is an object of the present invention to provide a shaft locking device and a rotation mechanism that can generate a click feeling at a desired angle, suppress backlash, and improve the operational feeling.
[0007]
[Means for Solving the Problems]
  In order to achieve the above object, the shaft lock device of the present invention has a shaft insertion hole and has a shaft insertion hole at a predetermined position around the shaft insertion hole in the axial direction of the shaft insertion hole. A first member formed with a projecting convex portion; a second member having a shaft portion inserted into the shaft insertion hole of the first member and rotatable relative to the first member around the shaft portion; An elastic member for applying a friction torque to the relative rotational movement of the first member and the second member; a friction plate provided on the shaft portion and rotating relative to the first member integrally with the shaft portion; The friction plate extends in the radial direction of the friction plate and is elastically deformable in the axial direction of the shaft portion. When the first member and the second member are brought into contact with the first member, the first member and the second member have a predetermined relative rotation angle. Friction between the first member and the first member ; And a click arm that generates a click feeling increasing torque, the projections of the convex portion is elongated in the circumferential direction of the shaft insertion holeIn the circumferential directionThe width of the click armIn the circumferential directionThe shaft locking device is characterized by being larger than the width.
[0008]
As described in claim 2, the click arm portion or the convex portion may be provided at a plurality of locations in the circumferential direction of the shaft portion. According to a third aspect of the present invention, the width of the convex portion may be wider than the width of the click arm portion, and a groove into which the click arm portion is fitted may be formed in the convex portion.
[0010]
  Claim 4As described above, a first hinge portion comprising the shaft locking device and a third member rotatable about a second shaft portion in a direction orthogonal to the shaft portion of the first hinge portion. The biaxial rotation mechanism can be configured by providing the second hinge portion with friction generating means.
[0011]
  AlsoClaim 5As described above, by adding the slit and the stopper arm to the shaft lock device according to the first aspect, the rotation angle range between the first member and the second member can be regulated. in this case,Claim 6The engaging portion of the stopper arm may be brought into contact with one end of the slit when the second member rotates relative to the position where the click arm portion climbs over the convex portion as described above, orClaim 7As described above, the engaging portion of the stopper arm may be brought into contact with one end of the slit when the second member rotates relative to the position where the click arm portion rides on the convex portion.
[0012]
Claim 8As described in, a biaxial rotation mechanism may be configured,Claim 9As described above, a triaxial type rotation mechanism can also be configured.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
1 to 11 show a first embodiment of the present invention. The shaft locking device 10 of this embodiment includes a first member 11 and a second member 12 that can rotate relative to each other. A circular shaft insertion hole 15 is formed at the center of the first member 11. The first member 11 is formed by appropriately shaping a thick metal plate or the like, and is fixed to a housing of a main body (keyboard side) such as a personal computer. The first member 11 has a hole 16 through which a fixing member (a screw or a rivet (not shown)) is inserted.
[0014]
The first member 11 has a convex portion 17 at a predetermined position around the shaft insertion hole 15. The convex portion 17 projects in the axial direction of the shaft insertion hole 15 (right side in FIG. 2) so as to face the direction of the click arm portion 50 described below. As shown in FIG. 4 (A), the number of the convex portions 17 may be one. However, as shown in FIG. (For example, 120 ° in the circumferential direction) may be provided.
[0015]
A shaft member 20 extending in the horizontal direction is fixed to the second member 12. The shaft member 20 is generally cylindrical, and is formed with a non-circular detent portion 22 that is cut in parallel with the shaft portion 21 located on one end side thereof. Further, the other end side of the shaft member 20 is also cut in parallel to form a connecting portion 25. The connecting portion 25 is inserted into the hole 26 of the second member 12 and fixed by caulking or the like.
[0016]
The second member 12 is fixed to a rotatable movable frame such as a panel display. Accordingly, when the panel display is rotated, the first member 11 and the second member 12 rotate relative to each other about the shaft portion 21. A disc-shaped flange portion 28 is provided between the shaft portion 21 and the connecting portion 25.
[0017]
In a state where the shaft portion 21 is inserted into the shaft insertion hole 15, a disk-shaped first friction plate 30 is provided between the first member 11 and the flange portion 28. One surface side of the first friction plate 30 is in contact with the first member 11, and the other surface side is in contact with the end surface of the flange portion 28. The friction plate 30 is formed with a hole 31 into which the shaft portion 21 is inserted. The inner peripheral surface of the hole 31 has a shape that is non-rotatably fitted to the rotation preventing portion 22 of the shaft portion 21.
[0018]
Therefore, the friction plate 30 can rotate integrally with the second member 12. The friction plate 30 is formed with a hole 33 for retaining a lubricant penetrating in the plate thickness direction. By filling the hole 33 with a lubricant such as grease for improving the slidability, the rotation of the friction plate 30 is performed. And the lubricant is prevented from flowing out of the friction plate 30.
[0019]
A disk 35 is provided on the distal end side of the shaft portion 21, and a second friction plate 40 and an elastic member 41 are provided between the disk 35 and the first member 11. One surface side of the second friction plate 40 is in contact with the first member 11, and the other surface side is in contact with the elastic member 41. A hole 45 for inserting the shaft portion 21 is formed in the central portion of the friction plate 40. The inner peripheral surface of the hole 45 has a shape that is non-rotatably fitted to the rotation preventing portion 22 of the shaft portion 21. Accordingly, the friction plate 40 can rotate integrally with the second member 12 while being in close contact with the first member 11.
[0020]
The second friction plate 40 is also formed with a hole 46 for retaining a lubricant penetrating in the thickness direction. By filling the hole 46 with a lubricant such as grease for improving the slidability, the friction plate The wear due to the rotation of 40 is suppressed, and the lubricant is prevented from flowing out of the friction plate 40.
[0021]
The friction plate 40 is made of an elastically deformable spring material such as spring steel, and a tongue-like click arm portion 50 is integrally provided on the outer periphery thereof. The click arm portion 50 projects in the radial direction of the friction plate 40 and is elastically deformable in the axial direction of the shaft portion 21 (left and right direction in FIG. 2). Then, when the first member 11 and the second member 12 reach a predetermined relative rotation angle, the click arm portion 50 rides on the convex portion 17 so that a click feeling is obtained by increasing the friction torque.
[0022]
As shown in FIG. 5 (A), the click arm 47 may be at least at one place, but at two places as shown in FIG. 5 (B), or at a predetermined angle as shown in FIG. It may be provided at three positions of 120 °.
[0023]
In the shaft lock device 10 having the above-described configuration, frictional force is hardly generated between the click arm 50 and the first member 11 in a state where the click arm 50 is not in contact with the convex portion 17. As shown, when the click arm portion 50 rotates to the position where it rides on the convex portion 17, the click arm portion 50 is flexed by an amount corresponding to the height of the convex portion 17, and a relatively large friction torque is generated. FIG. 6 shows an example in which the convex portions 17 are provided at two locations.
[0024]
An elastic member 41 for giving a friction torque to the relative rotational movement between the first member 11 and the second member 12 is disposed between the disk 35 and the friction plate 40. A hole 55 through which the shaft portion 21 is inserted is formed in the central portion of the elastic member 41. The elastic member 41 has a function of pressing the friction plates 30 and 40 against both the front and back surfaces of the first member 11 by a repulsive load generated when the elastic member 41 is bent in the plate thickness direction, and is a disc spring or a wave spring (wave washer). Various types of springs can be used, including the like.
[0025]
A hole 60 for inserting the shaft portion 21 is also formed in the disk 35. The inner peripheral surface of the hole 60 has a shape in which the rotation preventing portion 22 of the shaft portion 21 is fitted so as not to rotate. Accordingly, the disk 35 rotates integrally with the second member 12. The disk 35 is held so as not to come out of the shaft portion 21 by a retaining portion 61 (shown in FIG. 3) that is plastically deformed in the direction in which the tip portion of the shaft portion 21 is expanded. The retaining portion 61 of this embodiment is caulked at the end portion of the shaft portion 21. However, the present invention is not limited to this. For example, a disk is formed by screwing a nut into a male screw portion formed at the end portion of the shaft portion 21. 35, the elastic member 41, etc. may be prevented from coming off.
[0026]
As shown in FIG. 7, the width of the convex portion 17 may be equal to or less than the width of the click arm portion 50, or the convex portion 17 may be inserted into the shaft insertion hole 15 as shown in FIGS. You may make it the width | variety of the convex part 17 become wider than the width | variety of the click arm part 50 by setting it as a shape long in the circumferential direction. In this case, the friction torque can be increased by the click arm portion 50 riding on the convex portion 17 as shown in FIGS.
[0027]
As shown in FIG. 11A, when a groove 65 having a width W2 equivalent to the width W1 of the click arm portion 50 is formed in the convex portion 17, the click arm portion 50 is fitted in the groove 65. Sometimes you can get more click and lock.
[0028]
Further, as shown in FIG. 11B, a groove 65 having a width W2 wider than the width W1 of the click arm portion 50 is formed in the convex portion 17, so that the width in the state where the click arm portion 50 enters the groove 65 is increased. Since the click arm portion 50 can move in a certain range in the direction, a characteristic in which the friction torque changes in two steps can be obtained.
[0029]
Next, a shaft locking device 10A according to a second embodiment shown in FIGS. 12 to 16 will be described. In addition, the same code | symbol is attached | subjected to the site | part common to the axis | shaft locking apparatus 10 of the said 1st Embodiment, description is abbreviate | omitted, and both different locations are demonstrated below.
[0030]
In the second embodiment, a click hole 70 is formed in the first member 11, and a convex locking portion 71 is formed in the click arm portion 50 of the friction plate 40. The click hole 70 penetrates in the axial direction of the shaft insertion hole 15 (the thickness direction of the first member 11). However, the click hole 70 may be a concave portion in which the side facing the click arm portion 50 is recessed. As shown in FIGS. 13 and 14, the click arm portion 50 extends in the radial direction integrally with the outer peripheral portion of the friction plate 40, and can be elastically deformed in the axial direction of the friction plate 40 (the axial direction of the shaft portion 21). It is. As shown in FIG. 15A, the click hole 70 may be provided at one place, but may be provided at a plurality of places as required, for example, at four places as shown in FIG.
[0031]
The locking portion 71 formed on the click arm portion 50 generates a feeling of clicking by entering the click hole 70 when the first member 11 and the second member 12 reach a predetermined relative rotation angle. ing. In the example shown in FIG. 16, while the shaft portion 21 makes one rotation in the direction of the arrow R, the click portions 70 are sequentially engaged with the four click holes 70 in the circumferential direction, thereby causing a click feeling by 90 °. .
[0032]
The shaft locking device 10 according to the first embodiment or the shaft locking device 10A according to the second embodiment can be applied to a rotation mechanism 80 as shown in FIG. The rotation mechanism 80 includes a first hinge portion 81 composed of the shaft locking device 10 (or 10A) and a direction orthogonal to the shaft portion (first shaft portion) 21 of the shaft locking device 10 (or 10A). A second hinge portion 83 having a second shaft portion 82 is provided.
[0033]
The second hinge portion 83 includes a friction member 85 such as a disc spring or a wave spring as friction generating means for applying a friction torque to the rotational motion of the third member 84 around the shaft portion 82. Accordingly, the rotation mechanism 80 can generate a click feeling when the first member 11 and the second member 12 rotate relative to each other about the first shaft portion 21, and also center on the second shaft portion 82. The third member 84 can also rotate.
[0034]
A rotation mechanism 90 shown in FIG. 18 includes a first hinge portion 81 made of the shaft locking device 10 (or 10A) and a second shaft in a direction orthogonal to the shaft portion 21 of the shaft locking device 10 (or 10A). A second hinge part 83 having a part 82 is provided. The second hinge portion 83 includes a coil spring 91 as friction generating means for giving a friction torque to the rotational motion of the third member 84.
[0035]
The second shaft portion 82 is rotatably fitted on the outer peripheral side of the small-diameter portion 93, the large-diameter portion 92 formed in the intermediate portion in the axial direction, the small-diameter portion 93 formed on both sides of the large-diameter portion 92, and The outer cylinder 94 is fixed to the first member 11. The outer diameter of the outer cylinder 94 is equal to the outer diameter of the large diameter portion 92. The inner diameter of the coil spring 91 in a free state (a state in which no external force is applied) is slightly smaller than the outer diameter of the large-diameter portion 92 and the outer cylinder 94. Wound around both sides. The second shaft portion 82 is fixed to the third member 84.
[0036]
The rotation mechanism 90 using such a coil spring 91 for generating friction is such that when the first member 11 and the third member 84 rotate relative to each other about the second shaft portion 82, the outer diameter portion 92 and the outer The cylinders 94 rotate relative to each other. For this reason, the inner peripheral surface of the coil spring 91 rotates and slides with frictional resistance on one of the large-diameter portion 92 and the outer cylinder 94 and is in a fixed state with respect to the other, so that frictional torque is generated. To do. The configuration and operation of the first hinge portion 81 are the same as those of the shaft locking devices 10 and 10A of the first embodiment or the second embodiment described above.
[0037]
In the rotation mechanism 100 shown in FIG. 19, the first member 11 and the third member 84 are rotatably connected by a second hinge portion 83 having a pair of left and right second shaft portions 82. The second shaft portion 82 has a large-diameter portion 92 and a small-diameter portion 93, and an outer cylinder 94 is fitted on the outer peripheral side of the small-diameter portion 93, and a coil spring extends over the large-diameter portion 92 and the outer cylinder 94. 91 is wound.
[0038]
The rotation mechanism 100 having such a configuration also generates a friction torque between the coil spring 91 and the shaft portion 82 when the first member 11 and the third member 84 rotate relative to each other. The configuration and operation of the first hinge portion 81 are the same as those of the shaft locking devices 10 and 10A of the first embodiment or the second embodiment described above.
[0039]
20 to 30 show a shaft locking device 10B according to a third embodiment of the present invention. In this embodiment, a stopper arm 110 and a slit 111 are added to the shaft locking device 10 of the first embodiment (FIGS. 1 to 11) described above. That is, an arcuate slit 111 centered on the shaft insertion hole 15 is formed in the first member 11. A stopper arm 110 is interposed between the friction plate 40 and the elastic member 41, and a hook-shaped engagement portion 112 is formed on the stopper arm 110. The engaging part 112 is inserted into the slit 111. The hole 113 formed in the center of the stopper arm 110 has a shape that can prevent rotation with respect to the shaft portion 21, and the stopper arm 110 can rotate integrally with the shaft portion 21. ing.
[0040]
Therefore, the shaft locking device 10B is configured such that when the first member 11 and the second member 12 reach a predetermined relative rotation angle, the engaging portion 112 of the stopper arm 110 hits the end 111a (or 111b) of the slit 111. Further rotation is prevented. As shown in FIG. 25, when the slit 111 is provided in the range of about 90 ° with the shaft insertion hole 15 as the center, the rotation region of the first member 11 and the second member 12 is restricted to the range of 90 °. Can do.
[0041]
In the example shown in FIG. 26, when the shaft portion 21 (second member 12) rotates relative to the position where the click arm portion 50 gets over the convex portion 17, the engaging portion 112 contacts the one end 111 a or the other end 111 b of the slit 111. It comes to touch. As shown in FIG. 27, the slit 111 may be formed over an angle range θ other than 90 ° as necessary.
[0042]
As shown in FIGS. 28 to 30, the convex portion 17 may be longer in the circumferential direction of the shaft insertion hole 15, so that the width of the convex portion 17 may be wider than the width of the click arm portion 50. In this case, as shown in FIG. 29, when the shaft portion 21 (second member 12) rotates relative to the position where the click arm portion 50 rides on the convex portion 17, the engaging portion 112 has one end 111a or the other end of the slit 111. It comes in contact with 111b. As shown in FIG. 30, the slit 111 may be formed over an angle range θ other than 90 ° as necessary.
[0043]
31 to 33 show a shaft locking device 10C according to a fourth embodiment of the present invention. In this embodiment, a stopper arm 110 and a slit 111 are added to the shaft locking device 10A of the second embodiment (FIGS. 12 to 16) described above. That is, an arcuate slit 111 centered on the shaft insertion hole 15 is formed in the first member 11. A stopper arm 110 is interposed between the friction plate 40 and the elastic member 41, and a hook-shaped engagement portion 112 is formed on the stopper arm 110. The engaging part 112 is inserted into the slit 111. The hole 113 formed in the center of the stopper arm 110 has a shape that can prevent rotation with respect to the shaft portion 21, and the stopper arm 110 can rotate integrally with the shaft portion 21. Yes.
[0044]
Therefore, the shaft locking device 10C is configured such that when the first member 11 and the second member 12 reach a predetermined relative rotation angle, the engaging portion 112 of the stopper arm 110 hits the end 111a (or 111b) of the slit 111. Further rotation is prevented. As shown in FIG. 32, when the slit 111 is provided in the range of 90 ° around the shaft insertion hole 15, the rotation region of the first member 11 and the second member 12 can be restricted to 90 °. it can.
[0045]
As shown in FIG. 33, when the shaft portion 21, that is, the second member 12 is rotated relative to the position where the locking portion 71 of the click arm portion 50 engages with the click hole 70, the engaging portion 112 of the stopper arm 110 is moved. The slit 111 is made to hit one end 111a or the other end 111b.
[0046]
The shaft locking device 10B of the third embodiment or the shaft locking device 10C of the fourth embodiment can be applied to a rotation mechanism 120 as shown in FIG. The rotation mechanism 120 includes a first hinge portion 81 made of the shaft locking device 10B (or 10C) and a second shaft portion 82 in a direction orthogonal to the shaft portion 21 of the shaft locking device 10B (or 10C). The second hinge portion 83 is provided.
[0047]
The second hinge portion 83 includes a friction member 85 as friction generating means for applying a friction torque to the rotational motion of the third member 84 around the shaft portion 82. Accordingly, the rotation mechanism 120 can generate a click feeling when the first member 11 and the second member 12 rotate relative to each other about the first shaft portion 21, and the rotation range is set by the stopper arm 110. Further, the third member 84 can be rotated around the second shaft portion 82.
[0048]
The rotation mechanism 130 shown in FIG. 35 includes a first hinge portion 81 made of the shaft locking device 10B (or 10C) and a second shaft in a direction orthogonal to the shaft portion 21 of the shaft locking device 10B (or 10C). A second hinge part 83 having a part 82 is provided. The second hinge portion 83 includes a coil spring 91 as a friction generating means for applying a friction torque to the rotational motion of the third member 84.
[0049]
The second shaft portion 82 is rotatably fitted to the large-diameter portion 92 formed at the intermediate portion in the axial direction, the small-diameter portions 93 formed on both sides of the large-diameter portion 92, and the outer peripheral side of the small-diameter portion 93. The outer cylinder 94 is fixed to the first member 11. The outer diameter of the outer cylinder 94 is equal to the outer diameter of the large diameter portion 92. The inner diameter of the coil spring 91 in the free state is slightly smaller than the outer diameters of the large diameter portion 92 and the outer cylinder 94, and therefore the coil spring 91 is wound around both the large diameter section 92 and the outer cylinder 94 in the free state. The second shaft portion 82 is fixed to the third member 84.
[0050]
The rotation mechanism 130 using such a coil spring 91 for generating friction has a large diameter portion 92 and an outer cylinder when the first member 11 and the third member 84 rotate relative to each other about the second shaft portion 82. 94 rotate relative to each other. For this reason, the inner peripheral surface of the coil spring 91 rotates and slides with frictional resistance on one of the large-diameter portion 92 and the outer cylinder 94 and is in a fixed state with respect to the other, so that frictional torque is generated. To do. The configuration and operation of the first hinge portion 81 are the same as those of the shaft locking devices 10B and 10C of the third embodiment or the fourth embodiment described above.
[0051]
In the rotation mechanism 140 shown in FIG. 36, the first member 11 and the third member 84 are rotatably connected by a second hinge portion 83 having a pair of left and right second shaft portions 82. The second shaft portion 82 has a large-diameter portion 92 and a small-diameter portion 93, and an outer cylinder 94 is fitted on the outer peripheral side of the small-diameter portion 93, and a coil spring extends over the large-diameter portion 92 and the outer cylinder 94. 91 is wound.
[0052]
The rotation mechanism 140 having such a configuration also generates a friction torque between the coil spring 91 and the shaft portion 82 when the first member 11 and the third member 84 rotate relative to each other. The configuration and operation of the first hinge portion 81 are the same as those of the shaft locking devices 10B and 10C of the third embodiment or the fourth embodiment described above.
[0053]
The shaft locking devices 10, 10A, 10B, and 10C of the above-described embodiments can be applied to a three-axis type rotation mechanism 150 as shown in FIG. 37 and FIG. The rotation mechanism 150 includes a first hinge portion 81 composed of the shaft lock device 10 (or 10A, 10B, 10C) and a second shaft portion in a direction orthogonal to the first shaft portion 21 of the hinge portion 81. A second hinge portion 83 having a third member rotatable about 82 and a third shaft portion 151 in a direction orthogonal to the first shaft portion 21 and the second shaft portion 82. The third hinge portion 152 includes a friction member 153 such as a disc spring or a wave spring as friction generating means for applying a friction torque to the rotational motion of the third shaft portion 151 (shown in FIG. 38). It has.
[0054]
Therefore, the rotation mechanism 150 generates a click feeling when the first member 11 and the second member 12 rotate relative to each other about the first shaft portion 21, and the rotation range thereof is restricted by the stopper arm 110. Moreover, the third member 84 can rotate around the second shaft portion 82, and the fourth member 155 can also rotate around the third shaft portion 151.
[0055]
In the electronic device 160 such as a desktop personal computer shown in FIGS. 39 and 40, the above-described rotation mechanism 150 can be employed as means for rotatably supporting the panel display 162 on the main body portion 161. In this case, swinging in the horizontal direction around the third shaft 151 (rotation in the direction of arrow X shown in FIG. 41A) and switching between the vertical position and the horizontal position around the first shaft 21 are performed. (Rotation in the direction of arrow Y shown in FIG. 41B) and vertical inclination adjustment (rotation in the direction of arrow Z shown in FIG. 41C) about the second shaft portion 82 are made possible.
[0056]
Needless to say, the present invention is not limited to the desktop information processing apparatus described above, and can be applied to a rotation mechanism that supports a rotating member in various devices, facilities, and the like.
[0057]
【The invention's effect】
According to the shaft locking device of the first aspect, when the first member and the second member reach a desired angle with each other according to the positions of the click arm portion and the convex portion, the click feeling can be generated. In this case, since the click arm portion is elastically ridden on the convex portion, the occurrence of backlash is suppressed. According to the configuration described in claim 2, it is possible to generate a click feeling at a desired angle according to the position or number of the click arm portion or the convex portion. According to the third aspect, the friction torque can be changed in two steps at a desired angle.
[0059]
  Claim 4According to the claim1In addition to the effects of the described shaft lock device, a biaxial rotation mechanism that can rotate around the second shaft portion and can stop at a desired position can be obtained.
[0060]
  Claim 5According to the shaft lock device described in (1), it is possible to generate a click feeling at a desired angle, and it is possible to regulate the rotation range of the first member and the second member according to the slit.
[0061]
  Claim 6Accordingly, the relative rotation between the first member and the second member can be stopped when the click arm portion gets over the convex portion.Claim 7Accordingly, the relative rotation between the first member and the second member can be stopped in a state where the click arm portion rides on the convex portion.The
[0062]
  Claim 8According to the configuration described inClaim 5In addition to the effects of the shaft locking device described in (2), it is possible to obtain a biaxial type rotation mechanism that can rotate around the second shaft portion and can stop at a desired position.Claim 9According to the configuration described inClaim 8In addition to the effect of the rotation mechanism described in (3), a three-axis type rotation mechanism that can be rotated about the third shaft portion and can be stopped at a desired position can be obtained.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of a shaft locking device showing a first embodiment of the present invention.
FIG. 2 is a side view showing a partial cross section of the shaft locking device in an exploded state.
FIG. 3 is a side view of the shaft lock device assembled.
FIG. 4 is a front view of a first member of the shaft locking device.
FIG. 5 is a front view of a friction plate of the shaft locking device.
FIG. 6 is a front view showing a first member and a click arm portion of the shaft locking device.
FIG. 7 is a cross-sectional view showing a click arm portion and a convex portion of the shaft locking device.
FIG. 8 is a front view showing a modification of the first member.
FIG. 9 is a front view showing a modified example of the first member and a click arm portion.
FIG. 10 is a plan view showing a modification example of a click arm portion and a convex portion.
FIG. 11 is a plan view showing still another modified example of the convex portion.
FIG. 12 is a side view, partly in cross section, in an exploded state of the shaft locking device showing the second embodiment of the present invention.
13 is a front view of a friction plate used in the shaft locking device shown in FIG.
14 is a sectional view of a friction plate used in the shaft locking device shown in FIG.
15 is a side view of a first member used in the shaft locking device shown in FIG.
16 is a front view showing a first member and a click arm portion of the shaft locking device shown in FIG.
FIG. 17 is a side view of a rotation mechanism provided with the shaft locking device.
FIG. 18 is a side view showing a modification of the rotation mechanism provided with the shaft locking device in a partial cross section.
FIG. 19 is a side view showing a partial cross section of still another modification of the rotation mechanism provided with the shaft locking device.
FIG. 20 is an exploded perspective view of a shaft locking device showing a third embodiment of the present invention.
FIG. 21 is a side view, partly in cross section, of the shaft locking device shown in FIG. 20 in an exploded state.
22 is a side view showing a state in which the shaft locking device shown in FIG. 20 is assembled.
FIG. 23 is a front view of a stopper arm used in the shaft locking device shown in FIG. 20;
24 is a cross-sectional view of a stopper arm used in the shaft locking device shown in FIG.
FIG. 25 is a front view of a first member used in the shaft lock device shown in FIG. 20;
FIG. 26 is a side view showing a first member and a stopper arm of the shaft locking device shown in FIG. 20;
FIG. 27 is a front view showing a modification of the first member of the shaft locking device shown in FIG. 20;
FIG. 28 is a front view showing still another modification of the first member of the shaft locking device shown in FIG. 20;
FIG. 29 is a front view of the shaft locking device shown in FIG. 20;
FIG. 30 is a front view showing a modification of the first member having a slit.
FIG. 31 is a side view, partly in cross section, in an exploded state of a shaft locking device showing a fourth embodiment of the present invention.
32 is a front view of a first member used in the shaft locking device shown in FIG. 31. FIG.
FIG. 33 is a front view of the shaft locking device shown in FIG. 31;
FIG. 34 is a side view of a rotation mechanism having the shaft locking device.
FIG. 35 is a side view showing in partial cross section a modification of the rotation mechanism having the shaft locking device.
FIG. 36 is a side view showing, in partial cross section, still another modification of the rotation mechanism having the shaft locking device.
FIG. 37 is a rear view of a three-axis type rotation mechanism having the shaft locking device.
38 is a side view of the rotation mechanism shown in FIG. 37. FIG.
FIG. 39 is a side view of a desktop electronic device having a panel display.
40 is a rear view of the desktop electronic device shown in FIG. 39. FIG.
FIG. 41 is a schematic diagram illustrating an operation mode of a desktop electronic device.
42 is an exploded perspective view showing a conventional shaft locking device. FIG.
43 is a sectional view of the shaft locking device shown in FIG. 42. FIG.
[Explanation of symbols]
10, 10A, 10B, 10C ... Shaft locking device
11 ... 1st member
12 ... Second member
15 ... Shaft insertion hole
17 ... convex
21 ... Shaft
40 ... friction plate
50 ... Click arm
80 ... Rotation mechanism
81 ... 1st hinge part
82 ... Second shaft portion
83 ... 2nd hinge part
84 ... Third member
90 ... Rotation mechanism
100 ... Rotation mechanism
110 ... Stopper arm
111 ... Slit
112 ... engaging portion
120, 130, 140, 150 ... rotation mechanism
151. Third shaft portion
152 ... Third hinge
155 ... Fourth member

Claims (9)

  1. A first member having a shaft insertion hole and having a convex portion protruding in the axial direction of the shaft insertion hole at a predetermined position around the shaft insertion hole;
    A second member having a shaft portion inserted into the shaft insertion hole of the first member and rotatable relative to the first member around the shaft portion;
    An elastic member for applying a friction torque to the relative rotational movement between the first member and the second member;
    A friction plate provided on the shaft portion and rotating relative to the first member integrally with the shaft portion;
    The friction plate extends in the radial direction of the friction plate and is elastically deformable in the axial direction of the shaft portion and comes into contact with the first member to generate a friction torque, whereby the first member and the second member reach a predetermined relative rotation angle. A click arm portion that increases the friction torque with the first member by riding on the convex portion and generates a click feeling,
    Shaft lock device the protrusions, wherein the width in the circumferential direction in a long shape of the convex portion above the circumferential direction of the shaft insertion hole is larger than the circumferential width of the click arm portion.
  2.   The shaft lock device according to claim 1, wherein the click arm portion or the convex portion is provided at a plurality of locations in a circumferential direction of the shaft portion.
  3. 2. The circumferential width of the convex portion is wider than the circumferential width of the click arm portion, and a groove into which the click arm portion is fitted is formed in the convex portion. The shaft locking device as described.
  4.   A second hinge having a first hinge portion comprising the shaft locking device according to claim 1 and a third member rotatable about a second shaft portion in a direction orthogonal to the shaft portion of the shaft locking device. A rotation mechanism, wherein the second hinge portion is provided with friction generating means for applying a friction torque to the rotational motion of the third member.
  5. An arcuate slit formed in the first member over a predetermined angular range centered on the shaft insertion hole;
    It has an engaging portion that can rotate integrally with the shaft portion and is inserted into the slit, and hits the end of the slit when the first member and the second member reach a predetermined relative rotation angle. A stopper arm that prevents further rotation by
    The shaft locking device according to claim 1, comprising:
  6.   6. The shaft lock device according to claim 5, wherein when the second member rotates relative to a position where the click arm part passes over the convex part, the engaging part of the stopper arm comes into contact with one end of the slit. .
  7.   6. The shaft locking device according to claim 5, wherein when the second member rotates relative to a position where the click arm portion rides on the convex portion, the engaging portion of the stopper arm comes into contact with one end of the slit. .
  8.   A second hinge having a first hinge portion comprising the shaft locking device according to claim 5 and a third member rotatable about a second shaft portion in a direction orthogonal to the shaft portion of the shaft locking device. A rotation mechanism, wherein the second hinge part includes a friction generating means for applying a friction torque to the rotational movement of the third member.
  9.   A third hinge portion having a fourth member rotatable about a shaft portion of the first hinge portion and a third shaft portion orthogonal to the shaft portion of the second hinge portion; 9. The rotation mechanism according to claim 8, wherein the hinge portion includes a friction generating means for applying a friction torque to the rotational motion of the fourth member.
JP16272097A 1997-06-19 1997-06-19 Shaft locking device and rotation mechanism using this shaft locking device Expired - Fee Related JP4040720B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16272097A JP4040720B2 (en) 1997-06-19 1997-06-19 Shaft locking device and rotation mechanism using this shaft locking device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16272097A JP4040720B2 (en) 1997-06-19 1997-06-19 Shaft locking device and rotation mechanism using this shaft locking device

Publications (2)

Publication Number Publication Date
JPH116520A JPH116520A (en) 1999-01-12
JP4040720B2 true JP4040720B2 (en) 2008-01-30

Family

ID=15760006

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16272097A Expired - Fee Related JP4040720B2 (en) 1997-06-19 1997-06-19 Shaft locking device and rotation mechanism using this shaft locking device

Country Status (1)

Country Link
JP (1) JP4040720B2 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100846893B1 (en) * 2001-08-17 2008-07-17 엘지전자 주식회사 Stand for LCD monitor
US8495796B2 (en) 2005-08-04 2013-07-30 Beckman Coulter, Inc. Opening-and-closing mechanism and latching mechanism
JP4772595B2 (en) * 2006-06-07 2011-09-14 株式会社東芝 Electronics
CA2644950C (en) * 2006-06-28 2013-11-19 Alcon, Inc. Control display positioning system
JP5706166B2 (en) * 2011-01-13 2015-04-22 下西技研工業株式会社 Hinge
JP6163993B2 (en) * 2013-09-17 2017-07-19 富士通株式会社 Electronics

Also Published As

Publication number Publication date
JPH116520A (en) 1999-01-12

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