Electronic devices

Abstract

The electronic device comprises: a frame; a rotating shaft that rotates around the axis relative to the frame; a supporting member that extends from the rotating shaft in the radial direction thereof and supports the frame in a state in which the angle of the frame relative to the setting surface is adjusted by rotating together with the rotating shaft; a first rotating member that is set around the axis of the rotating shaft and rotates together with the rotating shaft; and a driven member that is driven by the first rotating member in a state in which it abuts against an abutment surface of the first rotating member. With respect to the first rotating member, in a first state in which the driven member abuts against the abutment surface of the first rotating member, the one-way clutch allows the first rotating member to rotate in a first direction around its axis, and the first rotating member is pressed against the driven member due to the rotation of the first rotating member in a second direction around its axis to restrict the rotation of the first rotating member in a second direction. In a second state in which the driven member is separated from the abutment surface of the first rotating member, the one-way clutch is released and allows the first rotating member to rotate in the first direction and the second direction.

Description

Technical Field

[0001] The present invention relates to electronic equipment. Background Art

[0002] In the past, it has been proposed that a pitch mechanism for adjusting the setting angle of a frame is provided in electronic devices such as projection devices and display devices. For example, Japanese Patent Publication No. 2001-128088 discloses a screen angle adjustment device for a display device, which includes a lifting unit for lifting and tilting the display device. The lifting unit includes a first lifting arm and a second lifting arm that are rotatably mounted around the axis of a support shaft. In the screen angle adjustment device, a friction torque is generated when the first lifting arm and the second lifting arm rotate by adjusting the tightness of a fastening nut mounted on the support shaft. Summary of the invention

[0003] Problem that the invention aims to solve

[0004] However, if a pitch mechanism utilizing friction torque is provided as in the angle adjustment device disclosed in Patent Document 1, a force greater than the torque supporting the weight of the frame is required to adjust the setting angle, and excessive force is generated when attempting to forcibly close the frame, risking damage to the pitch mechanism.

[0005] One of the advantages of the present disclosure is to provide an electronic device provided with a pitch mechanism capable of adjusting a setting angle with an appropriate torque.

[0006] Means used to solve problems

[0007] The electronic device disclosed in the present invention comprises: a frame; a rotating shaft that rotates around the axis relative to the frame; a supporting member that extends from the rotating shaft in the radial direction thereof and supports the frame in a state in which the setting angle of the frame relative to the setting surface is adjusted by rotating together with the rotating shaft; a first rotating member that is set around the axis of the rotating shaft and rotates together with the rotating shaft; and a driven member that is driven by the first rotating member in a state in which it abuts against an abutment surface of the first rotating member. With respect to the first rotating member, in a first state in which the driven member abuts against the abutment surface of the first rotating member, a one-way clutch acts, the one-way clutch allowing the first rotating member to rotate in a first direction around its axis, and pressing the driven member due to the first rotating member rotating in a second direction around its axis to restrict the first rotating member from rotating in the second direction, and in a second state in which the driven member is separated from the abutment surface of the first rotating member, the one-way clutch is released and allows the first rotating member to rotate in the first direction and the second direction.

[0008] Effects of the Invention

[0009] According to the present disclosure, it is possible to provide an electronic device provided with a pitch mechanism capable of adjusting a setting angle with an appropriate torque. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a perspective view of the projection device according to the embodiment as viewed from the front and bottom.

[0011] Figure 2 This is an exploded perspective view of the tilt mechanism of the projection device according to the embodiment as viewed from below.

[0012] Figure 3 This is an exploded perspective view of the left side rotation mechanism of the projection device according to the embodiment as viewed from above.

[0013] Figure 4A is a perspective view of a base member in a projection device according to an embodiment, Figure 4B It is a plan view of a base member in the projection device according to the embodiment.

[0014] Figure 5A is a perspective view of a holding member in a projection device according to an embodiment, Figure 5B It is a plan view of a holding member in the projection device according to the embodiment.

[0015] Fig. 6A is a perspective view of a rotating mechanism in a projection device according to an embodiment, Figure 6B It is a top view of a rotating mechanism in the projection device according to the embodiment.

[0016] Figure 7 is a cross-sectional view of a rotating mechanism of a projection device according to an embodiment of the present invention, Fig. 6A Cross-sectional view of section VII-VII in FIG.

[0017] Fig. 8A This is a side view of an arm and a rotating mechanism in the closed state, viewed from the inside of the axis. Figure 8B It is magnified Fig. 8A A side view of the main part of the rotating mechanism surrounded by the dotted line.

[0018] Fig.9A This is a side view of an arm and a rotating mechanism viewed from the axial inside in a state where the arm is rotated from a closed state to an open direction at a predetermined rotation angle, Fig. 9B It is magnified Fig.9A A side view of the main part of the rotating mechanism surrounded by the dotted line.

[0019] Fig. 10AThis is a side view of an arm and a rotating mechanism viewed from the axial inside in a state where the arm is rotated from a closed state to an open direction at a predetermined rotation angle, Fig. 10B It is magnified Fig. 10A A side view of the main part of the rotating mechanism surrounded by the dotted line.

[0020] Fig.11A This is a side view of an arm and a rotating mechanism in the open state, viewed from the inside of the axis. Fig. 11B It is magnified Fig.11A A side view of the main part of the rotating mechanism surrounded by the dotted line.

[0021] Fig. 12A This is a side view of an arm and a rotating mechanism viewed from the axial inside in a state where the arm is rotated from an open state to a closed direction at a predetermined rotation angle, Fig. 12B It is magnified Fig. 12A A side view of the main part of the rotating mechanism surrounded by the dotted line.

[0022] Fig.13A This is a side view of an arm and a rotating mechanism viewed from the axial inside in a state where the arm is rotated from an open state to a closed direction at a predetermined rotation angle, Fig. 13B It is magnified Fig.13A A side view of the main part of the rotating mechanism surrounded by the dotted line. DETAILED DESCRIPTION

[0023] Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. Figure 1 As shown, the projection device (electronic device) 10 of the embodiment has a frame 20, and the frame 20 has six surfaces (upper surface 20a, lower surface 20b, left side surface 20c, right side surface 20d, front surface 20e and rear surface 20f) in a roughly long rectangular box shape with the left and right directions as the longitudinal direction. The projection device 10 has a projection port 11 for emitting projection light on the front surface 20e side. In addition, in the following description, the left and right in the projection device 10 refer to the left and right directions relative to the main emission direction X of the projection light from the projection port 11, and the front and back refer to the emission direction X of the projection light of the projection device 10 and the opposite direction are respectively expressed as the front and back directions. In addition, the upper surface 20a side is the upper side of the projection device 10, and the lower surface 20b side is the lower side of the projection device 10.

[0024] The frame 20 includes an upper housing 21 including an upper surface 20a and a part of a right side surface 20d, and a lower housing 22 including a lower surface 20b and a part of the right side surface 20d. The frame 20 includes a front panel 23 on the front side, a rear panel 24 on the rear side, and a left panel 25 on the left side. The front panel 23 is provided with an opening 23a of the projection port for exposing the projection port 11, an air intake port 23b, and an air exhaust port 23c. The left panel 25 is provided with an air intake port 25a and a connection port 25b for a connector for image input and output. In the projection device 10, a pitch mechanism TL for adjusting the setting angle of the frame 20 is provided on the front side portion of the lower surface 20b of the frame 20.

[0025] like Figure 1 and 2 As shown in FIG. 1 , the tilt mechanism TL is configured to include a pair of arms (support members) 34R and 34L, a connecting plate 36, and a rotating mechanism 40 for rotating the two arms 34R and 34L relative to the frame 20. The connecting plate 36 is in an elongated shape along the left-right side of the front surface 20e, and the pair of arms 34R and 34L are installed to extend from the left and right ends of the connecting plate 36 to the rear surface 20f. The pair of arms 34R and 34L are rotated to the lower side by the rotating mechanism 40. The pair of arms 34R and 34L and the connecting plate 36 are arranged on the installation surface IS (refer to FIG. 1 ) relative to the installation surface IS of the projection device 10. Fig. 8A and Figure 8B ) The frame body 20 is supported in a state where the setting angle of the frame body 20 is adjusted.

[0026] In the tilt mechanism TL, the pair of arms 34R and 34L are in a state where they are closed relative to the lower surface 20b of the frame 20, in other words, the pair of arms 34R and 34L are in a state where they are at an angle of 0° relative to the lower surface 20b of the frame 20 ( Figure 1 The state indicated by the solid line in FIG. 20. Hereinafter referred to as the "closed state"), and the state in which the pair of arms 34R and 34L are opened in such a manner that they are lowered at an angle of approximately 90° relative to the lower surface 20b of the frame body 20 ( Figure 1 The projection device 10 can project at any setting angle (elevation angle) within the range of the dotted line in the middle. Hereinafter, the shapes and connection directions of the components constituting the pitch mechanism TL are described based on the closed state.

[0027] The pair of arms 34R and 34L and the pair of rotating mechanisms 40 are provided on both left and right end sides of the lower surface 20b of the frame 20 (the end edges of the opposite sides of the frame 20). The connecting plate 36 connects the pair of arms 34R and 34L and is provided at the above-mentioned installation angle with the installation surface IS (refer to FIG. 1 ). Fig. 8A and Figure 8B) abut. The pair of arms 34R and 34L are symmetrical in shape and are metal plate members having first arm plates 34R1 and 34L1 and second arm plates 34R2 and 34L2, respectively. The first arm plates 34R1 and 34L1 are plate-shaped so that the width in the vertical direction increases as the two plate surfaces face the left-right direction.

[0028] like Figure 3 As shown, the base end side (rear end side) of the first arm plate 34L1 of the left arm 34L has: a shaft support hole 34L1a, through which a mounting screw 41 of a rotating mechanism 40 described later is inserted and shaft supported; and a locking recess 34L1b, which locks one end SPa of a coil spring SP described later. The opening end of the shaft support hole 34L1a is set to a substantially rectangular shape with arcs on the upper and lower sides and straight lines on the left and right sides. In addition, although not shown in the figure, the shaft support hole and the locking recess are also provided on the first arm plate 34R1 of the right arm 34R.

[0029] The second arm plates 34R2 and 34L2 of each arm 34R and 34L are plate-shaped and are provided at the portion of each arm 34R and 34L except the rear end portion in a posture in which the plate surface thereof is parallel to the lower surface 20b of the frame 20 (in a posture in which the plate surface of the first arm plates 34R1 and 34L1 is substantially perpendicular). In addition, a first arm receiving groove 26a is provided on the lower surface 20b of the frame 20, and in the closed state, the first arm plates 34R1 and 34L1 of each arm 34R and 34L are received in the first arm receiving groove 26a. A second arm receiving groove 26b is provided on the front side of the first arm receiving groove 26a, and the second arm receiving groove 26b is in a shallow concave shape opened toward the lower side, and receives the second arm plates 34R2 and 34L2 of each arm 34R and 34L.

[0030] The connecting plate 36 is a substantially rectangular metal plate member that matches the size of the long side direction of the frame 20. Both ends of the connecting plate 36 in the long side direction are connected to the front ends of the arms 34R and 34L by screw members 35, and connect the arms 34R and 34L. In the closed state where the pair of arms 34R and 34L are accommodated in the first arm accommodation groove 26a and the second arm accommodation groove 26b, the upper surface of the connecting plate 36 abuts against the lower surface 20b of the frame 20, and the lower surface of the connecting plate 36 protrudes downward from the lower surface 20b of the frame 20 (see FIG. 2 ). Figure 1 Therefore, in order to adjust the height so that the frame 20 is laid horizontally when the lower surface 20b of the frame 20 is facing downward in the closed state, a pair of setting members 50 made of rubber material or the like are provided at the rear side portion of the lower surface 20b of the frame 20.

[0031] Next, a pair of rotating mechanisms 40 for rotating the arms 34R and 34L relative to the lower surface 20b of the frame 20 will be described in detail. Each member of the pair of rotating mechanisms 40 has a shape and structure that is bilaterally symmetrical, and the rotating mechanism 40 provided on the left side of the lower surface 20b of the frame 20 will be described below. In addition, on the lower surface 20b of the frame 20, on the rear side of each first arm receiving groove 26a, a mounting portion 27 for mounting each rotating mechanism 40 on the lower surface 20b of each frame 20 is provided. Each mounting portion 27 is composed of a receiving recess 27a, which is provided in a continuous form from the first arm receiving groove 26a and accommodates the rotating mechanism 40, and a mounting surface 27b, which is provided in a continuous form from the lower surface 20b of the frame 20 and mounts the rotating mechanism 40. Two screw holes 27b1 are provided on the mounting surface 27b, into which the base member 46 of the rotating mechanism 40 is screwed. Although there are two screw holes 27b1 and two screws to be mounted in the screw holes 27b1, at least one screw is sufficient.

[0032] like Figure 3 As shown, the rotating mechanism 40 has a mounting screw 41, a roller member (driven member) 42, a retaining member 43, a rotating shaft 44, a coil spring (coil spring member) SP, a base member 46, a rotating sleeve (first rotating member) SL, a rotating washer (second rotating member) 48, a first washer W1, a second washer W2, a third washer W3 and a fastening nut 49. The details will be described later, but the rotating mechanism 40 causes the torque limiter to function when a torque (rotation torque) greater than a predetermined torque is generated around the axis of the rotating shaft 44. In addition, the rotating mechanism 40 is configured to transition between a state in which a one-way clutch is functioning and a state in which the one-way clutch is released and the one-way clutch is not functioning. The one-way clutch restricts rotation in a rotation direction to become a closed state when a pair of arms 34L and 34R are open relative to the lower surface 20b of the frame 20.

[0033] The mounting screw 41 is a screw-shaped member, which is inserted from the outside into the shaft support hole 34L1a of each arm 34R and 34L. The roller member 42 is a roughly cylindrical member or a cylindrical member with a hollow interior, and is configured so that the axial direction of the column or cylinder is oriented in the left-right direction. The retaining member 43 is an elastic member that retains the roller member 42 in a manner that allows it to rotate around its axis, and is provided by bending a metal leaf spring. The structure of the retaining member 43 will be described in detail later. The coil spring SP is assembled around the axis of the rotating shaft 44, and one end SPa of the coil spring is locked with the locking recess 34L1b of the arm 34L, so that as the arm 34L rotates, the other end SPb of the coil spring abuts against the lower surface 20b of the frame 20. With one end of the coil spring SP locked in the locking recess 34L1 b and the other end SPb in contact with the lower surface 20 b of the frame 20 , the arm 34L is biased in a direction to close relative to the lower surface 20 b of the frame 20 by the coil spring SP.

[0034] The rotating shaft 44 is a shaft-shaped member, and is rotatably arranged relative to the frame 20 in a posture where its axial direction is consistent with the left-right direction. The rotating shaft 44 has: a large diameter portion 44a, which is arranged on the outside in the axial direction; a small diameter portion 44b, which is arranged on the inside of the large diameter portion 44a in the axial direction and has a smaller diameter than the large diameter portion 44a; a retained portion 44c, which is arranged between the large diameter portion 44a and the small diameter portion 44b, and has a smaller diameter than the large diameter portion 44a and larger than the small diameter portion 44b; and a protrusion 44d, which protrudes slightly outward from the axially outer side of the large diameter portion 44a. The end of the large diameter portion 44a side of the rotating shaft 44 is connected to the arms 34R and 34L. In other words, the arms 34R and 34L extend from the rotating shaft 44 in its radial direction.

[0035] The outer diameter of the large diameter portion 44a is set to be one circle smaller than the inner diameter of the winding portion of the coil spring SP. In addition, a part of the small diameter portion 44b is missing along the axial direction of the rotating shaft 44, and due to this missing, a flat surface shape that is regarded as a flat surface is not formed in the rotating shaft 44 (hereinafter, the portion regarded as a flat surface shape is referred to as "flat surface shape portion 44b1"). On the rotating shaft 44, a pair of such flat surface shape portions 44b1 are set at positions relative to each other. Then, a thread groove 44G is provided between the pair of flat surface shape portions 44b1 on the rotating shaft 44, that is, on the outer peripheral surface around the axis where the flat surface shape portion 44b1 is not provided. The protrusion 44d is provided with a threaded hole 44d1, and the threaded hole 44d1 faces axially outward ( Figure 3The screw hole 44d1 is shaped so as to be concave-convex with the tip of the screw 41, so as to be screwed with the mounting screw 41 via the shaft support hole 34L1a in the arm 34L. In addition, the protrusion 44d is configured to have a substantially identical shape to the shaft support hole 34L1a in the arm 34L, and the outer peripheral dimension of the protrusion 44d is slightly smaller than the inner peripheral dimension of the shaft support hole 34L1a, so that the protrusion 44d is inserted into the shaft support hole 34L1a in the arm 34L and fixed to the arm 34L.

[0036] In addition, hereinafter, the outer side of the rotating shaft 44 in the rotating mechanism 40 in the axial direction is referred to as the "axial outer side", and the inner side of the rotating shaft 44 in the axial direction is referred to as the "axial inner side". That is, in the rotating mechanism 40 provided on the right side of the pair of rotating mechanisms 40, "axial outer side" refers to the right side, and "axial inner side" refers to the left side. On the other hand, in the rotating mechanism 40 provided on the left side, "axial outer side" refers to the left side, and "axial inner side" refers to the right side. In addition, hereinafter, the axis around the rotating shaft 44 is simply referred to as "around the axis".

[0037] The base member 46 is a member for rotatably holding the rotating shaft 44 relative to the lower surface 20b of the frame 20 and mounting the rotating mechanism 40 on the frame 20. Specifically, the base member 46 holds the held portion 44c of the rotating shaft 44. The rotating sleeve SL is a short cylindrical rubber member having a sleeve through hole SL1 as a through hole provided inside, and is arranged around the axis of the rotating shaft 44. The portion of the small diameter portion 44b of the rotating shaft 44 that does not form the flat surface shape portion 44b1 is inserted into the sleeve through hole SL1. The inner diameter of the sleeve through hole SL1 is substantially equal to the outer diameter of the portion of the small diameter portion 44b of the rotating shaft 44 that does not form the flat surface shape portion 44b1. Therefore, since the small diameter portion 44b is inserted into the sleeve through hole SL1, and the friction force acts between the rotating sleeve SL and the rotating shaft 44, the rotating sleeve SL rotates together with the rotating shaft 44.

[0038] like Figure 3As shown in the enlarged view E1 of , the rotating washer 48 is a washer-shaped member, which is arranged on the axial inner side of the base member 46. The rotating washer 48 has a roughly plate-shaped washer plate surface 48a and a raised portion 48b that is raised in a roughly cylindrical shape from the surface facing the axial outer side on the washer plate surface 48a. The raised portion 48b is set so that its outer diameter is roughly equal to the outer diameter of the retained portion 44c of the rotating shaft 44. A washer through hole 48c is set as a through hole on the inner side of the washer plate surface 48a and the raised portion 48b. The washer through hole 48c is set so that at its opening, it has a shape that is roughly the same as the outer shape of the flat surface shape portion 44b1 and the thread groove 44G of the rotating shaft 44, and the size of the inner circumference of the opening is slightly larger than the outer circumferential size of the flat surface shape portion 44b1 and the thread groove 44G. Therefore, by inserting the flat surface shape portion 44 b 1 of the rotating shaft 44 into the washer through-hole 48 c , the rotating washer 48 is fitted to the rotating shaft 44 , and the rotating washer 48 can rotate together with the rotating shaft 44 .

[0039] In addition, the washer plate surface 48a has a pair of feather portions 48a1 and 48a2 extending in a feather-like manner in the radial direction of the rotating washer 48 (in the radial direction of the rotating shaft 44 when the rotating shaft 44 is inserted into the washer through hole 48c). The pair of feather portions 48a1 and 48a2 are respectively arranged at positions that are approximately 180° relative to the center of the rotating washer 48. The first washer W1 and the second washer W2 are both disc-shaped washers (disc spring washers), and the third washer W3 is a flat washer, and they are all arranged on the axial inner side of the rotating washer 48. The small diameter portion 44b of the rotating shaft 44 is inserted into the inner side of each washer W1, W2, and W3. The fastening nut 49 is a nut-shaped component and is arranged at the innermost side in the axial direction in the rotating mechanism 40. The fastening nut 49 is screwed and fastened on the thread groove 44G provided on the small diameter portion 44b of the rotating shaft 44. Here, the first washer W1 and the second washer W2 are opposed to each other and sandwiched between the third washer W3 and the rotating washer 48 , and the axial pressing force of the rotating shaft 44 is adjusted by tightening the tightening nut 49 from the inside.

[0040] Next, refer to Figure 4A and Figure 4B The structure of the base member 46 will be described in detail. Figure 4A and Figure 4BAs shown, the base member 46 has a bottom plate 46a provided with an opening in the center, a pair of side plates 46b rising upward from the left and right sides of the bottom plate 46a, and a rear end plate 46c rising upward from the rear end of the bottom plate 46a. Two mounting threaded holes H1 and H2 are arranged in the front-back direction on the bottom plate 46a, and the two mounting threaded holes H1 and H2 are used to screw the base member 46 into the screw hole 27b1 of the mounting surface 27b of the frame 20. In addition, there are two screws for mounting the threaded holes H1 and H2 and two screws for mounting the threaded holes H1 and H2, but at least one is sufficient. The base member 46 is arranged in the receiving recess 27a with the bottom plate 46a side facing the lower side, and is positioned so that the mounting threaded holes H1 and H2 overlap with each screw hole 27b1 and are screwed from the lower side of the frame 20, thereby being mounted on the frame 20.

[0041] A pair of side plates 46b are of substantially the same shape and are arranged at intervals in the left-right direction. On the side plate 46b arranged on the axial inner side of each side plate 46b, a protrusion (engaging portion) 46b1 that protrudes slightly toward the rear side is provided. In addition, a circular missing portion 46b2 that is missing a substantially circular shape in a form open to the rear side is provided on each side plate 46b. The inner diameter of each circular missing portion 46b2 is slightly larger than the outer diameter of the retained portion 44c of the rotating shaft 44 and the outer diameter of the raised portion 48b of the rotating washer 48. The retained portion 44c is rotatably retained in the circular missing portion 46b2 arranged on the axial outer side of each circular missing portion 46b2, and the raised portion 48b is rotatably retained in the circular missing portion 46b2 arranged on the axial inner side.

[0042] On the rear side of the circular missing portion 46b2 in each side plate 46b, a circular arc missing portion 46b3 is provided in a connected form, wherein the circular arc missing portion 46b2 is missing from the circular arc missing portion 46b2 to the lower side. On the rear side of each circular arc missing portion 46b3, an inclined portion 46b4 is provided in a connected form, wherein the circular arc missing portion 46b3 is inclined toward the rear side and upward. Each circular arc missing portion 46b3 and each inclined portion 46b4 are smoothly formed so that the outer peripheral surface 42a of the roller member 42 slides on each circular arc missing portion 46b3 and each inclined portion 46b4 while the roller member 42 rotates. A rear end plate opening 46c1 is provided in a substantially central portion of the rear end plate 46c, which opens in a substantially rectangular shape in the front-rear direction. In addition, a small gap 46S is provided in the front-rear direction between the rear end plate 46c and the front end portion of each side plate 46b.

[0043] Next, refer to Figure 5 Figure 5A and Figure 5B The structure of the holding member 43 and the holding method of the roller member 42 held by the holding member 43 are described in detail. Figure 5A and Figure 5BAs shown in FIG. 1 , the holding member 43 is provided in a generally U-shape that is open downward as a whole when viewed from the left and right directions. The holding member 43 includes a curved portion 43a that is curved upward in a generally arc shape, a front plate portion 43b provided at an end portion on the front side of the curved portion 43a, a rear plate portion 43c provided at an end portion on the rear side of the curved portion 43a, and a roller holding portion 43d provided at the lower side of the front plate portion 43b.

[0044] A first rectangular opening 43b1 opening in a substantially rectangular shape in the front-to-back direction is provided in the axially inner portion of the front plate portion 43b. A first bent portion (engaged portion) 43b2 bent at a substantially right angle toward the rear side in the first rectangular opening 43b1 is provided at the upper opening end of the first rectangular opening 43b1. The first bent portion 43b2 engages with the protrusion 46b1 by abutting against the protrusion 46b1 when the protrusion 46b1 of the base member 46 enters the first rectangular opening 43b1. On the other hand, an abutment portion 43b3 bent toward the front side in a substantially V-shape when viewed from the side is provided at the upper end of the axially outer portion of the front plate portion 43b. The abutment portion 43b3 restricts the front plate portion 43b from abutting against the side plate 46b in the axially outer side of the base member 46 when the retaining member 43 is assembled to the base member 46.

[0045] The rear plate portion 43c is provided on the lower side of the front plate portion 43b. A second rectangular opening 43c1 is provided at the substantially central portion of the rear plate portion 43c, which is opened in a substantially rectangular shape in the front-rear direction. A second bent portion 43c2 bent toward the rear side is provided at the lower opening end of the second rectangular opening 43c1. As described later, the second bent portion 43c2 is locked in the rear end plate opening 46c1 of the base member 46 when the rear plate portion 43c is accommodated in the gap 46S of the base member 46.

[0046] The roller retaining portion 43d has: a first plate portion 43d1, which is bent at an approximately right angle from the lower end of the front plate portion 43b toward the rear side; a second plate portion 43d2, which is bent at an approximately right angle toward the lower side in a manner open to the front side from a part of the rear end of the first plate portion 43d1 (the central portion in the left-right direction) and opened toward the front side; and a pair of third plate portions 43d3, which are bent at an approximately right angle from both ends of the first plate portion 43d1 in the left-right direction toward the lower side. The distal end of the second plate portion 43d2 is bent at an approximately right angle toward the front side. The space surrounded by the first plate portion 43d1, the second plate portion 43d2 and the pair of third plate portions 43d3 is a receiving space 43S (refer to Figure 3The left and right portions of the front and rear sides of the storage space 43S where the second plate portion 43d2 is not provided are open, and the storage space 43S is set to a size that allows the roller member 42 to be stored therein with a small gap between the roller member 42 and the plate portions 43d1, 43d2, and 43d3.

[0047] The outer peripheral surface 42a of the roller member 42 accommodated in the accommodation space 43S is in contact with or close to the first plate portion 43d1 and the second plate portion 43d2, and both ends thereof are in contact with or close to the pair of third plate portions 43d3. In addition, when the roller member 42 is accommodated in the accommodation space 43S, the portions of the outer peripheral surface 42a of the roller member 42 that are not opposite to the second plate portion 43d2 on the front side and the rear side are exposed from the accommodation space 43S. Therefore, as described later, when the portion of the roller member 42 exposed from the accommodation space 43S is in contact with the base member 46 or the rotating sleeve SL, the roller member 42 rotates and slides around its axis as the rotating sleeve SL rotates.

[0048] Next, refer to Figure 3 and Fig. 6A and Figure 6B , the assembly method of each component constituting the rotating mechanism 40 is described. Fig. 6A and Figure 6B , a rotating mechanism 40 is illustrated which is arranged on the left side of the lower surface 20b of the frame 20. First, the small diameter portion 44b of the rotating shaft 44 is inserted into the sleeve through hole SL1. Next, the retained portion 44c of the rotating shaft 44 is embedded into the circular missing portion 46b2 arranged on the axial outer side of each circular missing portion 46b2 of the base member 46, so that the rotating sleeve SL is arranged between a pair of circular missing portions 46b. Next, the rotating washer 48 is inserted into the flat surface shape portion 44b1 of the rotating shaft 44 exposed from the axial inner side of the base member 46, and the raised portion 48b of the rotating washer 48 is embedded into the circular missing portion 46b2 arranged on the axial inner side of each circular missing portion 46b2. Thus, in a state where the rotating sleeve SL is located between a pair of side plates 46b of the base member 46, the rotating shaft 44 is maintained to be rotatable around its axis relative to the base member 46.

[0049] Next, the holding member 43 holding the roller member 42 is assembled to the base member 46. Specifically, first, the roller member 42 is accommodated in the accommodation space 43S of the holding member 43. Next, the roller holding portion 43d is accommodated toward each arc missing portion 46b3 so that the second plate portion 43d2 of the holding member 43 is accommodated between the pair of side plates 46b, and the portion of the roller member 42 exposed from the accommodation space 43S is in contact with or close to each arc missing portion 46b3 of the base member 46. Then, the rear plate portion 43c of the holding member 43 is accommodated in the gap 46S of the base member 46 so that the second bent portion 43c2 is locked in the rear end plate opening 46c1. Thus, the holding member 43 is assembled to the base member 46. In addition, without limitation to the above, even if there is no gap 46S, the rear plate portion 43c of the holding member 43 may be bonded to the rear end plate 46c of the base member 46 by an adhesive, or joined using a solder alloy or the like.

[0050] The length of the holding member 43 in the front-to-back direction in the state of being assembled to the base member 46 is shorter than the length of the holding member 43 in the front-to-back direction in the open state. Therefore, by assembling the holding member 43 to the base member 46, the elastic force of the leaf spring constituting the holding member 43 is applied from the curved portion 43a to the roller holding portion 43d side, so that the roller holding portion 43d and the roller member 42 held by the roller holding portion 43d are applied to the side (lower side) of each circular arc missing portion 46b3. In addition, the protrusion 46b1 of the base member 46 is located on the side opposite to the holding member 43. In addition, the front plate portion 43b of the holding member 43 and the portion of the roller member 42 exposed from the roller holding portion 43d are arranged on the rotation track of the feather portions 48a1 and 48a2 of the rotating washer 48. That is, the front plate portion 43b of the holding member 43 and the roller member 42 are arranged at a position that interferes with the feather portions 48a1 and 48a2 due to the rotation of the rotating washer 48 around the axis. Therefore, as described later, the rotating feather portion 48a1 utilizes the stress generated by the contact with the front plate portion 43b to bend the front plate portion 43b rearward relative to the protrusion 46b1 engaged with the first bending portion 43b2, thereby releasing the engagement between the protrusion 46b1 and the first bending portion 43b2, and the rotating feather portion 48a2 utilizes the stress generated by the contact with the roller member 42 to move the roller member 42 and the retaining member 43 upward along the inclined portion 46b4.

[0051] Here, if Figure 8BAs shown, in the state where the holding member 43 is assembled to the base member 46, the size S1 of the gap formed between the rotating sleeve SL and each arc missing portion 46b3 is smaller than the outer diameter of the roller member 42, and the size S2 of the gap formed between the rotating sleeve SL and each inclined portion 46b4 is larger than the outer diameter of the roller member 42. Then, the size of the gap formed between the rotating sleeve SL and each arc missing portion 46b3 gradually becomes shorter as it moves downward, so when the roller member 42 slides toward the side of each arc missing portion 46b3, the roller member 42 is sandwiched between the rotating sleeve SL and each arc missing portion 46b3 (each inclined portion 46b4), and the roller member 42 is pressed against the outer peripheral surface (contact surface) of the rotating sleeve SL, and the rotating sleeve SL becomes non-rotatable. On the other hand, when the roller member 42 slides toward the opposite side (upper side) of the side of each arc missing portion 46b3, the roller member 42 separates from the outer peripheral surface of the rotating sleeve SL, and the rotating sleeve SL becomes rotatable.

[0052] Returning to the description of the assembly method of the rotating mechanism 40, the rotating shaft 44, the base member 46 and the retaining member 43 are then assembled to the arm 34L. First, the winding portion of the coil spring SP is assembled around the large diameter portion 44a of the rotating shaft 44. At this time, one end SPa of the coil spring SP is locked in the locking recess 34L1b of the arm 34L. Next, the protruding portion 44d of the rotating shaft 44 is inserted into the shaft support hole portion 34L1a of the arm 34L from the axial inside, and the mounting screw 41 is screwed into the threaded hole 44a1 to fix the rotating shaft 44 to the arm 34L. Next, the first to third washers W1 to W3 are inserted into the small diameter portion 44b of the rotating shaft 44 that is exposed from the axial inside of the rotating washer 48.

[0053] Finally, the fastening nut 49 is fastened to the thread groove 44G of the rotating shaft 44, and the fastening nut 49 is installed. Through the above steps, the rotating mechanism 40 is assembled to the arm 34L, and the rotating shaft 44 rotates around its axis together with the arm 34L. In addition, as the rotating shaft 44 rotates, the rotating sleeve SL pressed into the rotating shaft 44 rotates around the axis together with the rotating shaft 44. In addition, the above-mentioned assembly of the holding member 43 with respect to the base member 46 can be performed after the rotating shaft 44, the base member 46 and the holding member 43 are assembled to the arm 34L.

[0054] Next, refer to Figure 7 The operation of the torque limiter acting in the rotating mechanism 40 is described below. Figure 7As shown, by tightening the fastening nut 49 in the assembly process of the rotating mechanism 40, the rotating washer 48 is pressed against the rotating sleeve SL via the first to third washers W1 to W3. As a result, the rotating sleeve SL is clamped between the rotating washer 48 and the retained portion 44c of the rotating shaft 44 in the left-right direction, and the rotating sleeve SL rotates around the axis together with the rotating shaft 44 due to the friction force (static friction force) acting between these components. In addition, the magnitude of the static friction force acting between the rotating washer 48 and the rotating sleeve SL and between the rotating shaft 44 and the rotating sleeve SL can be adjusted by changing the tightening load of the fastening nut 49.

[0055] On the other hand, when the rotating sleeve SL becomes non-rotatable due to the roller member 42 being pressed against the outer peripheral surface of the rotating sleeve SL, the rotating shaft 44 and the arm 34L also become non-rotatable together with the rotating sleeve SL. However, when excessive rotation torque acts on the rotating shaft 44 and the arm 34L, in other words, when a torque greater than a predetermined torque is generated around the axis of the rotating shaft 44 and the arm 34L, the torque exceeds the static friction force acting between the rotating washer 48 and the rotating sleeve SL and between the rotating shaft 44 and the rotating sleeve SL, and the rotating shaft 44 starts to slide relative to the rotating sleeve SL. As a result, the rotating sleeve SL does not rotate, and only the rotating shaft 44 and the arm 34L rotate around the axis. That is, the torque limiter acts.

[0056] Next, the operation of the one-way clutch that functions in the rotating mechanism 40 will be described. Fig. 8A and Figure 8B In the closed state shown in FIG. 1 , the roller member 42 is urged (pressed) toward the arc missing portion 46b3 by the elastic force of the leaf spring constituting the retaining member 43, and the roller member 42 abuts against the outer peripheral surface of the rotating sleeve SL. From this state, when the operator resists the force of the coil spring SP and rotates the arm 34L (rotating shaft 44) in the direction of opening relative to the lower surface 20b of the frame 20 (hereinafter referred to as the "opening direction (first direction) D1"), the rotating sleeve SL and the rotating washer 48 are in the closed state. Fig. 8A and Figure 8B The roller member 42 is driven by the rotating sleeve SL to rotate counterclockwise, and the roller member 42 slides upward along each inclined portion 46b4 against the elastic force of the holding member 43. In this way, the arm 34L (rotating shaft 44) is allowed to rotate in the opening direction D1.

[0057] On the other hand, when the operator rotates the arm 34L (rotation shaft 44) in a direction to close the lower surface 20b of the frame 20 (hereinafter referred to as the "closing direction (second direction) D2") with respect to the lower surface 20b of the frame 20 while the arm 34L is opened to a predetermined angle as described above, the rotating sleeve SL and the rotating washer 48 are rotated in a direction to close the lower surface 20b of the frame 20. Fig. 8A and Figure 8B The roller member 42 rotates counterclockwise in the middle, and the roller member 42 is driven by the rotating sleeve SL and rotates clockwise. The roller member 42 is pressed downward due to the elastic force of the retaining member 43, and slides downward along each inclined portion 46b4 toward each arc missing portion 46b3. As a result, the roller member 42 is sandwiched between the rotating sleeve SL and each arc missing portion 46b3 (each inclined portion 46b4), and the roller member 42 is pressed against the outer peripheral surface of the rotating sleeve SL, so that the rotating sleeve SL cannot rotate. In this way, the rotation of the arm 34L (rotating shaft 44) in the closing direction D2 is restricted. As described above, in the rotating mechanism 40, the one-way clutch that restricts the rotation in one direction around the axis plays a role.

[0058] Next, refer to Fig. 8A and FIG. 8B to FIG. 13A and Fig. 13B The following describes the operation of opening the arm 34L (34R) to a desired angle and closing the opened arm 34L (34R) in the tilt mechanism TL of the projection device 10 of the present embodiment. Fig. 8A and Figure 8B When the closed state shown in the figure is rotated in the opening direction within the range of the rotation angle of 5° to 80°, the roller member 42 is in a state of contact with the outer peripheral surface of the rotating sleeve SL (hereinafter referred to as the "contact state (first state)"), so the one-way clutch acts on the rotating mechanism 40. For example, Fig.9A and Fig. 9B As shown, when the operator rotates the arm 34L (34R) in the opening direction at a rotation angle θ1 = 45°, the one-way clutch operates to allow rotation in the opening direction, so the arm 34L (34R) can be rotated with a light force.

[0059] On the other hand, when the operator rotates the arm 34L (34R) in the opening direction and then rotates it in the closing direction, the one-way clutch acts to restrict the rotation in the closing direction. In addition, even when the rotation of the arm 34L (34R) in the closing direction is restricted by the one-way clutch, it is possible to cause the torque limiter to act on the rotating mechanism 40 and rotate the arm 34L (34R) in the closing direction by trying to rotate the arm 34L (34R) in the closing direction with excessive force.

[0060] When the operator moves the arm 34L (34R) from Fig.9A and Fig. 9B When the state shown is further rotated toward the opening direction by a rotation angle θ2 = 80° (refer to Fig. 10A ),like Fig. 10BAs shown, the feather portion 48a2 located at the lower side in the closed state of the feather portions 48a1 and 48a2 of the rotating washer 48 interferes with the roller member 42 from the lower side due to rotation from the lower side to the upper side. Then, when the operator moves the arm 34L (34R) from Fig. 10A and Fig. 10B When the state shown is further rotated toward the opening direction to a rotation angle θ3 = 90° (refer to Fig.11A ),like Fig. 11B As shown, the feather portion 48a2 on one side interfering with the roller member 42 pushes the roller member 42 upward together with the roller holding portion 43d and slides them, thereby moving the front plate portion 43b of the holding member 43 upward. During this period, since the roller member 42 located between the rotating sleeve SL and the inclined portion 46b4 creates a gap between the rotating sleeve SL and the inclined portion 46b4, the arm 34L can easily rotate to the rotation angle θ3.

[0061] So, if Fig. 11B As shown, the first rectangular opening 43b1 of the holding member 43 moves upward toward the protrusion 46b1 of the base member 46, and the protrusion 46b1 enters the first rectangular opening 43b1. When the operator returns the arm 34L (34R) to the closing direction from this state to, for example, the rotation angle θ4 = 80° (see Fig. 12A ),like Fig. 12B As shown, the first bent portion 43b2 of the holding member 43 is hooked on the protrusion 46b1, and the first bent portion 43b2 is engaged with the protrusion 46b1. As a result, the front plate portion 43b is fixed at this position, and the roller holding portion 43d and the roller member 42 are restricted from moving downward (toward the arc missing portion 46b3), so that the roller member 42 is separated from the outer peripheral surface of the rotating sleeve SL (hereinafter referred to as the "separated state (second state)"), and the one-way clutch is released.

[0062] Thus, in the disengaged state in which the one-way clutch is released, rotation in the opening direction and the closing direction is allowed, and only the force of the coil spring SP acts on the arm 34L (34R). Therefore, in the disengaged state, even if the operator does not apply force to the arm 34L (34R), the projection 46b1 remains engaged with the first bent portion 43b2 due to the force of the coil spring SP, and the arm 34L (34R) rotates toward the closing direction.

[0063] When the arm 34L (34R) returns to the closing direction to the rotation angle θ5 = 13° in the separated state (see FIG. 13a), as shown in FIG. Fig. 13BAs shown, of the feather portions 48a1 and 48a2 of the rotating washer 48, the feather portion 48a1 located on the upper side in the closed state rotates from the rear side toward the front side, thereby interfering with the front plate portion 43b of the retaining member 43 from the front side. When the operator further rotates the arm 34L (34R) in the closing direction from this state, the front plate portion 43b is pressed toward the rear side by the feather portion 48a1, and the first bent portion 43b2 is disengaged from the protrusion 46b1. When the first bent portion 43b2 is disengaged from the protrusion 46b1, since the restriction of the protrusion 46b1 on the retaining member 43 is released, the roller retaining portion 43d and the roller member 42 slide toward the lower side (the side of each arc missing portion 46b3) due to the elastic force of the leaf spring constituting the retaining member 43, as shown in FIG. Fig. 8A and Figure 8B As shown in FIG. 1 , the roller member 42 abuts against the outer peripheral surface of the rotating sleeve SL and changes to the abutting state. That is, the one-way clutch is activated again.

[0064] Thus, in the pitch mechanism TL of the projection device 10 of the present embodiment, the rotation mechanism 40 is transformed between the contact state in which the one-way clutch works and the separation state in which the one-way clutch is released. In addition, in the rotation mechanism 40, when excessive force acts on the arm 34L (34R), the torque limiter works. Therefore, the arm 34L (34R) can be rotated to the desired rotation angle and the arm 34L (34R) can be held with a relatively light force, and the arm 34L (34R) can be closed by making the torque limiter work even in the contact state. In addition, for example, when the rotation angle of the arm 34L (34R) is to be changed from 45° to 30°, compared with making the torque limiter work and making the arm 34L (34R) rotate in the closing direction, the arm 34L (34R) can be rotated in the opening direction to 90° and become a separation state with a relatively light force, and the arm 34L (34R) is temporarily closed and reopened to make the rotation angle 30°. Furthermore, the rotation angles θ1 to θ5 are not limited to those described above, and can be set to any values ​​as long as the conditions of θ1<θ2<θ3 and θ5<θ4<θ3 are satisfied.

[0065] As described above, the projection device 10 of the present embodiment includes: a frame 20; a rotating shaft 44 that rotates around the axis relative to the frame 20; arms 34R and 34L that extend from the rotating shaft 44 in the radial direction thereof, and support the frame 20 according to the setting angle of the frame 20 relative to the setting surface IS by rotating together with the rotating shaft 44; a rotating sleeve SL that is set around the axis of the rotating shaft 44, rotates together with the rotating shaft 44, and slides relative to the rotating shaft 44 when a torque greater than a predetermined torque is generated around the axis of the rotating shaft 44; and a roller member 42 that is driven by the rotating sleeve SL in a state of abutting against the outer peripheral surface of the rotating sleeve SL, allows the rotating sleeve SL to rotate in the opening direction in an abutting state in which the roller member 42 abuts against the outer peripheral surface of the rotating sleeve SL, and releases the one-way clutch to allow the rotating sleeve SL to rotate in the opening direction and the closing direction in a disengaged state in which the roller member 42 is separated from the outer peripheral surface of the rotating sleeve SL by rotating in the closing direction and pressing against the roller member 42, and the one-way clutch is released to allow the rotating sleeve SL to rotate in the opening direction and the closing direction.

[0066] The projection device 10 of the present embodiment has the above-mentioned structure, so when the rotating shaft 44 is rotated in the opening direction together with the rotating sleeve SL (when the arms 34R and 34L are opened relative to the frame 20), by making the roller member 42 in abutment state and activating the one-way clutch, the rotating shaft 44 and the rotating sleeve SL can be rotated in the opening direction with a relatively light force, and the rotation in the closing direction can be restricted, and the setting angle can be adjusted to a desired setting angle. On the other hand, when the rotating shaft 44 is rotated in the closing direction together with the rotating sleeve SL (when the arms 34R and 34L are closed relative to the frame 20), by making the roller member 42 in a separated state and releasing the one-way clutch, the rotating shaft 44 and the rotating sleeve SL can be rotated in the opening direction with a relatively light force.

[0067] In addition, in the projection device 10 of the present embodiment, even when the arms 34R and 34L are forced to close due to excessive force when the one-way clutch works (when a torque greater than a specified torque is generated around the axis of the rotation shaft 44), the rotating sleeve SL slides relative to the rotation shaft 44. Therefore, even if the rotating sleeve SL cannot rotate in the closing direction (even if the rotation in the closing direction is restricted), the rotation shaft 44 can be rotated in the closing direction, the arms 34R and 34L can be closed, and the arms 34R and 34L can be prevented from being damaged. In this way, in the present embodiment, the projection device 10 that can adjust the setting angle with appropriate torque can be realized. In this way, the projection device 10 of the present embodiment can adjust the setting angle with a lighter force, and will not be damaged even in the case of forced closure.

[0068] In addition, the projection device 10 includes a rotating washer 48 that rotates together with the rotating shaft 44. When the rotating washer 48 rotates in the opening direction by more than a predetermined angle in the contact state, the rotating washer 48 slides in the direction of separating the roller member 42 from the outer peripheral surface of the rotating sleeve SL and changes to the separated state. When the rotating washer 48 rotates in the closing direction by more than a predetermined angle in the separated state, the rotating washer 48 slides in the direction of contacting the roller member 42 with the outer peripheral surface of the rotating sleeve SL and changes to the contact state. According to this structure, since the rotating washer 48 that rotates together with the rotating shaft 44 is provided, the roller member 42 is changed to the separated state by opening the arms 34R and 34L to more than a predetermined angle in the contact state, and the arms 34R and 34L are closed to more than a predetermined angle in the separated state, a specific structure for changing the roller member 42 to the contact state can be provided.

[0069] In addition, the projection device 10 includes a base member 46 that rotatably holds the rotating shaft 44 on the frame 20, and a holding member 43 that rotatably holds the roller member 42 on the base member 46, and the roller member 42 slides on the holding member 43. According to this structure, by making the member that holds the rotating shaft 44 and the member that holds the roller member 42 different members, it is possible to provide a specific structure for pressing the roller member 42 against the rotating sleeve SL provided around the axis of the rotating shaft 44, and a specific structure for separating the roller member 42 from the rotating sleeve SL.

[0070] In addition, in the projection device 10, the base member 46 forms a gap between the base member 46 and the rotating sleeve SL that is less than or smaller than the outer diameter of the roller member 42, and the holding member 43 has elasticity, and applies force to the roller member 42 toward the gap side. When the rotating sleeve SL rotates in the closing direction, the roller member 42 is pressed against the rotating sleeve SL between the rotating sleeve SL and the holding member 43 by the holding member 43. When the rotating sleeve SL rotates in the opening direction, the roller member 42 resists the force of the holding member 43 and is driven by the rotation of the rotating sleeve SL. According to this structure, by utilizing the force of the holding member 43 having elasticity, a specific structure for pressing the roller member 42 against the rotating sleeve SL as the rotating sleeve SL rotates in the closing direction can be realized.

[0071] In addition, in the projection device 10, the base member 46 has a protrusion 46b1 arranged on the side opposite to the retaining member 43, and the retaining member 43 has a first bent portion 43b2 that engages with the protrusion 46b1 at a position where the roller member 42 is separated from the rotating sleeve SL. By rotating the rotating washer 48 in the opening direction by more than a prescribed angle in the abutting state, the rotating washer 48 interferes with the roller member 42, and the retaining member 43 slides together with the roller member 42, and the first bent portion 43b2 engages with the protrusion 46b1. By rotating the rotating washer 48 in the closing direction by more than a prescribed angle in the separated state, the rotating washer 48 interferes with the retaining member 43, and the roller member 42 slides together with the retaining member 43, and the protrusion 46b1 detaches from the first bent portion 43b2.

[0072] According to the above structure, the roller member 42 is separated from the rotating sleeve SL by rotating the rotating washer 48 in the opening direction by more than a predetermined angle, and the first bent portion 43b2 is engaged with the protrusion 46b1, so that the separated state can be maintained. Then, the protrusion 46b1 is disengaged from the first bent portion 43b2 by rotating the rotating washer 48 in the closing direction by more than a predetermined angle, and the separated state is changed to the contact state. In this way, a specific structure for maintaining the separated state in the separated state until the rotating washer 48 rotates in the closing direction by more than a predetermined angle can be provided.

[0073] In addition, in the projection device 10, the rotating washer 48 has the feathers 48a1 and 48a2 extending in the radial direction thereof, the roller member 42 slides due to the interference of the feathers 48a1 and 48a2 with the roller member 42, and the holding member 43 slides due to the interference of the feathers 48a1 and 48a2 with the holding member 43. According to this structure, by arranging the roller member 42 and the holding member 43 on the rotation tracks of the feathers 48a1 and 48a2, a specific structure for sliding the roller member 42 and the holding member 43 using the rotating washer 48 can be provided.

[0074] In the projection device 10, a pair of feathers 48a1 and 48a2 are provided at intervals around the axis of the second rotating member. According to this structure, when one of the pair of feathers 48a1 and 48a2 is changed from the contact state to the separated state, it can be used to slide the roller member 42 and the holding member 43, and when the other is changed from the separated state to the contact state, it can be used to slide the roller member 42 and the holding member 43. Therefore, the rotation washer 48 can realize the change from the contact state to the separated state and the change from the separated state to the contact state within a predetermined rotation angle range.

[0075] In addition, the projection device 10 is provided with a coil spring SP, which is arranged around the axis of the rotating shaft 44 and applies force to the rotating shaft 44 in the closing direction. According to this structure, in the separation state where the one-way clutch does not act, the rotating shaft 44 can be rotated in the closing direction by the action force of the coil spring SP without applying force to the arms 34R and 34L. That is, a structure that can realize the automatic closing of the arms 34R and 34L in the separation state.

[0076] In addition, in the projection device 10, the rotating shaft 44, the arms 34R and 34L, the rotating sleeve SL, the rotating washer 48, and the roller member 42 are respectively arranged on the edge sides of the opposite sides constituting the frame body 20, and the arms 34R and 34L are arranged in a form of connecting between a pair of rotating shafts 44. According to this structure, the frame body 20 can be supported by the arms 34R and 34L on the edge sides of the opposite sides constituting the frame body 20, and the frame body 20 can be stably supported at an arbitrary setting angle.

[0077] Furthermore, in the projection device 10, the housing 20 has the opening 23a of the projection port. Thus, the projection device 10 capable of performing projection at a desired installation angle can be realized with a compact and simple structure.

[0078] In the present disclosure, unless otherwise specified, the phrase "at least" includes multiple combinations or quantities greater than the number shown, for example, "at least one of A, B, and C" means "A, B, (C), (A and B), (A and C), (B and C), or (A, B and C)". In addition, for example, when C is plural, the phrase "at least one of A, B, and C" means "A, B, (at least one or more C), (A and B), (A and at least one or more C), (B and at least one or more C) or (A, B and at least one or more C)". The case where A is plural or B is plural is also interpreted as being handled in the same manner as above.

[0079] The terms "first", "second", and "third", etc., unless otherwise specified, are used only for convenience in description to distinguish from others, and their numerical values ​​do not imply any other type of ordering (e.g., spatial, temporal, logical, etc.). Unless otherwise specified, the term "or" is used to refer to non-exclusive (things), for example, the phrase "A or B" means "any one of (A but not B), (B but not A), and (A and B)".

[0080] In addition, the embodiments described above are proposed as examples and are not intended to limit the scope of the invention. These new embodiments can be implemented in various other ways, and various omissions, substitutions and changes can be made without departing from the scope of the present invention. These embodiments and their variations are included in the scope and spirit of the present invention, and are included in the invention recorded in the scope of the claim and its equivalent.

Claims

1. An electronic device, wherein: have: Frame; A rotation axis, rotating around an axis relative to the frame; a supporting member extending from the rotating shaft in a radial direction thereof and supporting the frame body in a state where the frame body is adjusted in an installation angle relative to an installation surface by rotating together with the rotating shaft; a first rotating member disposed around an axis of the rotating shaft and rotating together with the rotating shaft; and The driven member is driven by the first rotating member in a state of being in contact with the contact surface of the first rotating member. With respect to the first rotating member, in a first state in which the driven member abuts against the abutment surface of the first rotating member, the one-way clutch operates, the one-way clutch allowing the first rotating member to rotate in a first direction about its axis, and pressing the driven member due to the first rotating member rotating in a second direction about its axis to restrict the first rotating member from rotating in the second direction, and in a second state in which the driven member is separated from the abutment surface of the first rotating member, the one-way clutch is released and allows the first rotating member to rotate in the first direction and the second direction.

2. The electronic device according to claim 1, wherein: A second rotating member is provided which rotates together with the rotating shaft, In the first state, the second rotating member rotates relative to the frame body in the first direction by a first angle or more, so that the second rotating member causes the driven member to slide in a direction away from the contact surface of the first rotating member and transition to the second state. In the second state, the second rotating member rotates relative to the frame at a second angle or more in the second direction, so that the second rotating member slides the driven member in a direction to contact the contact surface of the first rotating member and transitions to the first state.

3. The electronic device according to claim 1, wherein: have: a base member that holds the rotation shaft so as to be rotatable relative to the frame; and a holding member that holds the driven member rotatably relative to the base member, The driven member slides on the retaining member.

4. The electronic device according to claim 3, wherein: The base member defines a gap between the base member and the first rotating member that is smaller than or equal to the outer diameter of the driven member. The holding member has elasticity and applies force to the driven member toward the gap side. Regarding the driven member, through the rotation of the first rotating member in the second direction, the driven member is forced toward the gap side by the retaining member, and is pressed against the first rotating member between the first rotating member and the retaining member. Through the rotation of the first rotating member in the first direction, the driven member resists the force of the retaining member and is driven by the rotation of the first rotating member.

5. The electronic device according to claim 3, wherein: A second rotating member is provided which rotates together with the rotating shaft, The base member has a snap-fit ​​portion disposed on a side opposite to the holding member, The holding member includes an engaged portion that engages with the engaging portion at a position where the driven member is separated from the first rotating member. In the first state, the second rotating member is rotated relative to the frame body in the first direction to a first angle or more, the second rotating member interferes with the driven member, the holding member slides together with the driven member, and the engaged portion is engaged with the engaging portion. In the second state, the second rotating member rotates relative to the frame body in the second direction at a second angle or more, so that the second rotating member interferes with the holding member, the driven member slides together with the holding member, and the engaging portion is disengaged from the engaged portion.

6. The electronic device according to claim 5, wherein: The second rotating member has a feather portion extending in a radial direction thereof, The feather part interferes with the driven member to slide the driven member, The feather portion interferes with the holding member to slide the holding member.

7. The electronic device according to claim 6, wherein: The vane portions are provided in pair at an interval around the axis of the second rotating member.

8. The electronic device according to claim 2, wherein: A coil spring member is further provided. The coil spring member is provided around the axis of the rotating shaft and biases the rotating shaft in the second direction.

9. The electronic device according to claim 2, wherein: The rotating shaft, the supporting member, the first rotating member, the second rotating member, and the driven member are respectively disposed on both end edge sides of opposite sides constituting the frame body. The support member is provided so as to connect the pair of rotation shafts.

10. The electronic device according to claim 1, wherein: The first rotating member slides relative to the rotating shaft when a torque equal to or greater than a predetermined torque is generated around the axis line of the rotating shaft.

11. The electronic device according to any one of claims 1 to 10, wherein: The frame is a projection device having an opening of a projection port.

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