JP2013019440A - Machine supporting arm - Google Patents

Abstract

PROBLEM TO BE SOLVED: To stably hold a monitor and other machines in a predetermined position required by a user for a long time.SOLUTION: The monitor arm 1 has a positioning guide 3 integral with a bearing in the fixed side in one arm and a lever 6 having a positioning guide 4 in the movable side and a pushing and pressing member 51, and a lock part 52 in the other arm. The angle between the respective arm is adjusted in an optional turning angle, and thereafter the lever 6 is turned in a predetermined direction, thereby the positioning guide 4 in the movable side is pushed and pressed toward the positioning guide 3 in the fixed side by the pushing and pressing member 51, and the pressing member 51 and the lock part 52 are engaged by turning the lever, and the turning angle between the respective arms is locked. The lock is released by reverse turning operation of the lever 6.

Description

  The present invention relates to a device support arm that supports a monitor, a personal computer, a television, and various other devices so as to be movable in the left-right direction and the vertical direction.

  Conventionally, various devices such as monitors, personal computers, and televisions are installed and used by various types of device support arms in offices and homes, and in automobiles and other vehicles, airplanes, ships, and the like. In general, the device support arm is connected so that multiple arms can be rotated with each other via a hinge device and each arm can be held at an arbitrary rotation angle, and the proximal end arm is fixed to the attachment destination. In addition, various devices are attached to the arm on the distal end side, and various devices are movably installed at the attachment destination within the range of the length of each arm. This kind of device support arm is proposed by, for example, Japanese Patent Application Laid-Open No. H10-228707. The support arm of this document 1 is connected to a plurality of arms via a joint portion (hinge device) having a rotation resistance, and an information monitor is pivotally supported at the tip of the support arm, so that an information monitor is desired. It is designed to hold in the direction of.

JP-A-9-326980

  However, in the above-described conventional apparatus support arm, each joint member between a plurality of arms is configured by a hinge mechanism that imparts a frictional resistance action between each arm using a disc spring or a washer. Because it receives the load of each monitor and other equipment and the load of each arm only by the frictional resistance action, etc., the load is large for the ability to maintain the angle between each arm of this joint member, and after using this support arm Soon, the ability to support monitors and other devices will gradually decline, and the devices will gradually fall down and cannot be held stably in a predetermined position required by the user. In addition, when this type of device support arm is used in a vehicle or the like, for example, it is susceptible to vibration, so the device is likely to fall down, long at an optimal position for use by the user, and difficult to support stably. There is a problem.

  The present invention solves such a conventional problem, and provides an excellent device support arm that can stably hold a monitor and other various devices at a predetermined position requested by a user for a long time. The purpose.

In order to achieve the above object, the present invention includes a plurality of arms, and the arms are connected to each other via a hinge device so that the arms can rotate with each other and the arms can be held at an arbitrary rotation angle. A device support arm in which the base end arm is fixed to the attachment destination, various devices are attached to the distal end arm, and various devices are installed on the attachment destination in a range of the length of each arm. The hinge device includes a bearing formed at a connection end of each arm, a shaft inserted between the bearings of each arm, and a bearing of at least one of the adjacent arms. A fixed-side positioning guide that is formed in a cylindrical shape and integrally formed on the outer peripheral surface thereof and has a plurality of grooves or holes in the circumferential direction, and is arranged on the other arm so as to be able to advance and retreat toward the fixed-side positioning guide. And a spring hand As a normal condition, the claw or protrusion is arranged at the end facing the fixed side positioning guide and engageable with the groove or hole of the fixed side positioning guide. A movable side positioning guide, a lever that is rotatably disposed on the other arm, and has a pressing member that can press the movable side positioning guide toward the fixed side positioning guide, and the movable side Provided in the positioning guide or the other arm, and the pressing member or another part of the lever is engaged with the movable side positioning guide pressed against the fixed side positioning guide by the pressing member. A locking portion for restricting the movement of the lever, and the arms are moved in the left-right direction or the upper direction depending on the non-engagement state of the positioning guides on the fixed side and the movable side. The movable positioning guide is moved by the pressing member to the fixed side by rotating in the direction, adjusting the rotation angle between the arms to an arbitrary rotation angle, and rotating the levers in a predetermined direction. And pressing the pressing member or another part of the lever and the locking portion to lock the arms at the arbitrary rotation angle, and By rotating in a direction opposite to the predetermined direction to disengage the pressing member or another part of the lever from the lock portion, and releasing the lock between the arms. The gist.
In the present invention, it is preferable that each unit has the following configuration.
(1) The bearing of the other arm is composed of a pair of bearing portions having a shaft insertion portion, and the bearing of one arm is formed in a substantially semi-cylindrical shape so that it can be fitted between the other pair of bearing portions. It comprises a substantially semi-cylindrical bearing having a shaft insertion portion on the core, and the substantially semi-cylindrical bearing of the one arm aligns the shaft core of each shaft insertion portion between the pair of bearing portions of the other arm. The shaft is inserted between the bearings through the shaft insertion portions.
(2) One end side support portion for supporting the claw of the movable side positioning guide or one end portion on the protruding side and the other end portion for supporting the other end portion side in the other arm. A side support portion is provided, and the movable side positioning guide has one end portion supported by the one end side support portion, the other end portion supported by the other end side support portion, and the other end. A coil spring is interposed between the part side and the other end side support part so that the movable side positioning guide can be pulled and urged from the one end side support part side to the other end side support part side; The movable side positioning guide is normally biased by the spring in the pulling direction with respect to the stationary side positioning guide.
(3) A composite-shaped opening is formed between both side surfaces of the movable side positioning guide, and the opening is a substantially elongated hole shape that is long from the other end side to the one end side of the movable side positioning guide. A shaft insertion portion for pivotally supporting the movable side positioning guide is provided on the other end side of the elongated hole shape, and a pressing member is passed through the one end side, A pressed groove for pressing and moving the movable side positioning guide toward the fixed side positioning guide in response to the pressing force of the pressing member, and a locking portion of the pressing member on the terminal side of the pressed groove And a pressing member insertion portion having a lock groove for fitting and fixing the pressing member around the pressing member is provided, and the lever is positioned on the movable side at the lever main body and the pivot side end of the lever main body. Both guide openings And a pair of lever bases having a shaft passage portion and a pressing member passage portion corresponding to the shaft insertion portion and the pressing member insertion portion, and the pair of lever bases on the movable side. A pressing member made of a roller is mounted on both sides of the opening of the positioning guide and is inserted between the pressing member passing portions through a pressing member insertion portion of the movable positioning guide, and these movable members are mounted. A side positioning guide and a lever are disposed between both side surfaces of the other arm, and the lever body protrudes from the inside of the other arm to be disposed between both side surfaces of the other arm. A shaft is inserted through each shaft passage portion of the lever base and a shaft insertion portion of the movable side positioning guide, and the lever is The movable side positioning guide is disposed so as to be tiltable between the other end and the one end, and the pressing member is tilted by the lever into the pressing member insertion portion of the movable positioning guide. The movable side positioning guide is disposed in the other arm so as to be press-contactable with the fixed side positioning guide by the pressing of the pressing member.
(4) The plurality of arms include a proximal end arm, an intermediate arm, and a distal end arm, and the proximal end arm includes a fixing base for supporting and fixing the entire arm to an attachment destination. The side arm is equipped with a pedestal for attaching various devices.
(5) The pedestal and the arm on the front end side are formed by a bearing provided on the back side of the pedestal, a bearing provided on the arm on the front end side, and a shaft inserted between the bearings, and the arm on the front end side. Are attached so as to be rotatable in a direction orthogonal to the rotation direction between the arms, and are arranged in a substantially arc shape around the axis of the bearing of either the pedestal or the arm on the tip side. A lock groove or a lock hole and a rotation of the pedestal about the axis of the other bearing part and relative movement on each lock groove or each lock hole of the one bearing part and to each lock groove or each lock hole At least one guide hole formed so as to be capable of being opposed to each other and disposed on the guide hole of the other bearing portion so as to be able to advance and retreat toward each lock groove or each lock hole, and each lock as a normal state by a spring means Groove A lock pin that is pressed and urged toward each lock hole, and a lock device that engages and disengages the lock pin and each lock groove or each lock hole by a sliding operation of the lock pin, and the tip side of the base The rotation angle with respect to the arm is fixedly held.
(6) The pedestal is formed in a substantially planar shape, and is rotatably attached to a bearing on the back side through a shaft inserted through a substantially center thereof, and the back surface of the pedestal around the shaft is attached to the back side bearing. The rotation angle of the pedestal is fixed and held by a screw-type stopper that is inserted so as to be able to press.

  According to the apparatus support arm of the present invention, the above-described configuration of the hinge device interposes a fixed-side positioning guide having a plurality of grooves or holes between adjacent arms and a movable-side positioning guide having claws or protrusions. Then, by adjusting each arm to an arbitrary rotation angle in the left-right direction or the up-down direction and operating the lever in a predetermined direction, the claw or protrusion of the movable side positioning guide is moved by the pressing member. Because it is pressed toward the groove or hole of the positioning guide on the fixed side, and the other part of the pressing member or lever and the lock part are engaged, so that each arm is locked at an arbitrary rotation angle. Each arm can be easily adjusted to an arbitrary angle and firmly fixed, and the monitor and other various devices can be stably held for a long time at a predetermined position requested by the user. In addition, by rotating the lever in a direction opposite to the predetermined direction, the lock member can be released by releasing the engagement between the pressing member or the other part of the lever and the lock portion. In addition, it is possible to easily change and adjust the angle between the arms.

The top view of the apparatus support arm in one embodiment of this invention Left side view of the equipment support arm Front view of the equipment support arm Sectional view from the bottom side of the equipment support arm Sectional view from the right side of the equipment support arm Cross-sectional view from the front side of the equipment support arm, especially the middle arm Perspective view of movable side positioning guides, levers, pressing members, locks, etc. used in the equipment support arm The figure which shows operation | movement of the apparatus support arm, and shows the state which adjusts the angle of the left-right direction or the up-down direction of the whole arm by rotating an intermediate arm to the left-right direction or an up-down direction with respect to the arm of a base end side. The figure which shows operation | movement of the apparatus support arm, and shows the state which adjusts the angle of the left-right direction or an up-down direction of a base plate by rotating the arm at the front end side to the left-right direction or an up-down direction with respect to an intermediate arm The operation of the device support arm is shown, and the mounting bracket on the back of the pedestal plate is rotated in the vertical direction or the horizontal direction with respect to the arm on the tip side, and the state in which the vertical or horizontal angle of the pedestal plate is adjusted is shown. Figure The figure which shows the operation of the equipment support arm, and shows the state of adjusting the rotation angle of the pedestal plate by rotating the pedestal plate about the axis with respect to the mounting bracket on the back of the pedestal plate

  Next, embodiments for carrying out the present invention will be described with reference to the drawings. In this embodiment, the device support arm is exemplified as a vehicle monitor arm for installing the monitor in a vehicle such as a passenger car or a truck. In the following description, the device support arm is referred to as a monitor arm. Called.

1 to 6 show a monitor arm, and FIG. 7 shows a main part thereof. As shown in FIGS. 1 and 2, the monitor arm 1 includes a plurality of arms 11, 12, and 13, and the arms 11, 12, and 13 are connected to each other in the horizontal direction (left and right direction) via the hinge devices 2 and 2. The arms 11, 12, and 13 are connected so as to be rotatable in the vertical direction (up and down direction) and held at an arbitrary rotation angle. The base end arm 11 is provided with a fixing base 14 for supporting and fixing the entire arms 11 to 13 in the vehicle interior (the instrument panel or the like) as a mounting destination, and the monitor is attached to the arm 13 on the distal end side. A pedestal plate 15 is provided.
In the case of the monitor arm 1, the plurality of arms 11, 12, and 13 includes three arms, and includes a base end side arm 11, an intermediate arm 12, and a tip end side arm 13.
In this case, the intermediate arm 12 is the longest, the proximal end arm 11 is the shortest, the distal end arm 13 is shorter than the intermediate arm 12, and is longer than the proximal end arm 11.

As shown in FIGS. 1 and 2, the intermediate arm 12 is formed of an aluminum plate in the shape of a long rectangular tube having a predetermined length, and has an upper surface 121, a lower surface 122, and both side surfaces 123, 123. The front and rear end surfaces that are the connecting ends with the arms 13 and 11 on the distal end side and the proximal end side are opened, and bearings 22 and 22 are formed on the front and rear end surfaces, respectively. In this case, the upper arm member and the lower arm member having a substantially inverted U-shaped cross section and a U-shaped cross section, which are divided into two vertically, are joined together to form an intermediate arm 12 in a hollow, generally rectangular tube shape. Composed. The upper and lower surfaces 121 and 122 are formed in an elongated rectangular shape, and both front and rear end portions thereof are projected in a substantially arc shape in the front and rear direction from both end portions of both side surfaces 123 and 123, respectively, and shaft insertion portions 220 and 220 are formed at the centers thereof. Is formed as a pair of bearing portions 221, 221 221 221 into which the arms 13 and 11 (the bearings 23 and 21 thereof) on the distal end side and the proximal end side can be fitted. Further, a slit 124 for passing a rear lever 6 described later is formed in the center of the rear half surface of the upper surface 121 in the front-rear direction, and a front lever 6 described later is passed through the center of the front half surface of the lower surface 122. The slit 125 is formed in the front-rear direction. Both side surfaces 123 and 123 are formed in an elongated rectangular shape, and the both side surfaces 123 and 123 are arranged at predetermined positions corresponding to the centers in the front and rear direction of the slits 124 and 125 of the upper and lower surfaces 121 and 122, respectively. Shaft insertion portions 126, 126, 126, 126 for supporting the levers 6, 6 are formed. A clamp 127 for restraining various cables extending from the monitor is attached to the upper surface 121, the lower surface 122, and both side surfaces 123, 123 of the arm 12 at appropriate positions.
As shown in FIGS. 4 and 5, the shaft 12 is inserted into the arm 12 at the inner side of the pair of front and rear bearings 221, 221 and 221, 221 on both side surfaces 123, 123. 126, 126, and 126, one end side support portions 24 and 24 that support one end side of each of the movable side positioning guides 4 and 4 that will be described later, and the other end opposite thereto, respectively, at predetermined positions before and after. The other end side support parts 25 and 25 which support the part side are provided. In this case, each of the one end side support portions 24, 24 has a frame structure that can be fitted into the middle arm 12, and one end portion of the movable positioning guides 4, 4 is slid in the approximate center. Frames 241 and 241 that can be held are provided, and these support portions 24 and 24 are respectively attached to the predetermined positions on both end sides in the middle arm 12 by screws adjacent to the pair of bearing portions 221 and 221. It is done. Each of the other end side support portions 25, 25 has a plate shape that can be fitted into the intermediate arm 12, and the other end portion of the movable side positioning guides 4, 4 can be slid to the approximate center thereof. Insertion holes 250 and 250 for insertion and support are provided, and these support portions 25 and 25 are respectively attached to predetermined positions on the center side by screws in the intermediate arm 12.

  As shown in FIG. 1 and FIG. 2, the base end side arm 11 is entirely formed of aluminum alloy into a block shape having a predetermined length, and has a substantially cylindrical shape at the front end portion serving as a connection end with the intermediate arm 12. The fixed-side positioning guide 3 including a plurality of grooves or holes in the circumferential direction is also formed on the outer peripheral surface of the bearing 21. In this case, the arm 11 on the proximal end side is composed of a block having a composite shape in which the front end portion is a semi-cylindrical shape and the rear end portion is a rectangular tube shape. The front end portion is formed in a semi-cylindrical shape having a size that can be fitted between the pair of bearing portions 221 and 221 at the rear end portion of the intermediate arm 12, and the shaft insertion portion 210 is formed through the shaft core. A semi-cylindrical bearing 21 is formed. As shown in FIGS. 2 and 4, a plurality of grooves (vertical grooves) 301 are integrally formed on the outer peripheral surface of the bearing 21 in the circumferential direction, and the outer peripheral surface of the bearing 21 has a gear shape. It has become. This gear shape forms a fixed-side positioning guide 3 to be described later. The rear end portion is formed in a rectangular tube shape on the extension of the rear portion of the bearing 21, the rear surface is formed in a substantially rectangular concave shape, and screw holes 110 for mounting the fixed base are provided at the four corners.

  As shown in FIGS. 1 and 2, the front arm 13 is entirely formed of aluminum alloy into a block shape having a predetermined length, and has a substantially cylindrical shape at the rear end portion that serves as a connection end with the intermediate arm 12. The fixed-side positioning guide 3 including a plurality of grooves or holes in the circumferential direction is also formed on the outer peripheral surface of the bearing 23. In this case, the arm 13 on the distal end side is composed of a composite block having a semi-cylindrical rear end portion and a pair of arc-shaped flat plates at the front end portion. The rear end portion is formed in a substantially semi-cylindrical shape having a size that can be fitted between the pair of bearing portions 221 and 221 at the front end portion of the intermediate arm 12 in the same manner as the front end portion of the arm 11 on the base end side. A shaft insertion portion 230 is formed through the shaft core to form a semi-cylindrical bearing 23. As shown in FIGS. 2 and 4, a plurality of grooves (vertical grooves) 301 are integrally formed on the outer peripheral surface of the bearing 23 in the circumferential direction, and the outer peripheral surface of the bearing 23 has a gear shape. It has become. This gear shape forms a fixed-side positioning guide 3 to be described later. The front end portion is composed of a pair of arc-shaped flat plates 131 and 131, and protrudes forward from the front portion of the outer peripheral surface of the bearing 23 (with a certain distance between the flat plates 131 and 131). The shaft insertion portions 130 and 130 are formed through the centers of the flat plates 131 and 131 to form a pair of bearing portions (131 and 131) for attaching the base plate 15. Further, a plurality of small grooves or holes are substantially formed around the shaft insertion portion 130 of each of the flat plates 131, 131 of the pair of bearing portions or one of the flat plates 131 in this case along the arc-shaped end edge portion. They are formed side by side in an arc. These grooves or holes form a lock groove 81 (or lock hole) of the lock device 8 described later.

  As shown in FIGS. 4 and 5, the hinge devices 2, 2 are respectively bearings 21, 22, 23 formed at connecting ends of the arms 11, 12, 13 and bearings of the arms 11, 12, 13. The shafts 212, 222 inserted between the shafts 21, 22, 23 and the adjacent arms 11, 12, 13 of the adjacent arms 11, 12, 13, the bearings 21, 23 of at least one arm 11, 13 are formed in a substantially cylindrical shape, and the outer periphery thereof The fixed-side positioning guide 3 formed integrally with the surface and having a plurality of grooves 301 in the circumferential direction, and disposed on the other arm 12 so as to be able to advance and retreat toward the fixed-side positioning guide 3 and spring means. As a normal condition, the movable side positioning member is arranged so as to be separated from the fixed side positioning guide 3 and has a claw 401 that can be engaged with the groove 301 of the fixed side positioning guide 3 at the end of the fixed side positioning guide 3. Ga , A lever 6 having a pressing member 51 which is rotatably disposed on the other arm 12 and can press the movable side positioning guide 4 toward the stationary side positioning guide 3, and a movable side positioning guide. 4, and a lock portion 52 that engages the pressing member 51 and restricts the movement of the lever 6 in a state where the movable positioning guide 4 is pressed against the fixed positioning guide 3 by the pressing member 51.

  In this case, as described above, the front and rear bearings 22 and 22 of the intermediate arm 12 include a pair of bearing portions 221 and 221 having shaft insertion portions 220 and 220, respectively. 13 bearings 21, 23 are formed in a substantially semi-cylindrical shape so that they can be fitted between a pair of bearing portions 221, 221, 221, 221 of the intermediate arm 12. A plurality of grooves (vertical grooves) 301 are integrally formed on the outer peripheral surfaces of the bearings 21 and 23 in the circumferential direction, and are integrated with the bearings 21 and 23. In this case, each groove 301 is formed on the outer peripheral surface of each bearing 21, 23 in increments of 10 °. The bearings 21 and 23 of the arms 11 and 13 on the base end side and the tip end side are fitted between the pair of bearing portions 221 and 221 and 221 and 221 before and after the intermediate arm 12, respectively. Washers 26, 26, 26, 26 are arranged concentrically with the shaft insertion portions 210, 230 on both sides of each of the bearings 221, 221, 221, 221 on both sides of the intermediate arm 12. Washers 26, 26, 26, 26 and disc spring washers 27, 27, 27, 27 are sequentially arranged concentrically with the shaft insertion portions 220, 220, and the shafts 212, 222 are between the bearings 22, 21, 22, 23 are inserted through the shaft insertion portions 220 and 210 and the shaft insertion portions 220 and 230. In this way, the bearings 21 and 23 of the arms 11 and 13 on the base end side and the tip end side respectively connect the shafts 212 and 222 between the pair of bearing portions 221 and 221 before and after the intermediate arm 12 and 221 and 221, respectively. The fixed-side positioning guides 3, 3 integrated with these bearings 21, 23 are arranged opposite to the front and rear end openings of the intermediate arm.

  On the other hand, in the middle arm 12, as described above, one end side support portions 24 and 24 that support one end side of the movable positioning guide 4 and the other end side opposite thereto are supported. End side support portions 25, 25 are provided. Then, the movable side positioning guides 4 and 4 are attached to the one end side support portions 24 and 24 and the other end side support portions 25 and 25, respectively. Each of the movable side positioning guides 4 and 4 is formed in an approximately rectangular plate shape having an uneven shape in the upper part or the lower part by an aluminum alloy.

  In the case of the rear movable side positioning guide 4 (4R), as shown in FIGS. 5 and 7, the front end side slightly from the approximate center of the upper surface 41 (the end portion on the rear fixed side positioning guide 3 side) A locking projection 411 is formed on the opposite end side. The lower surface 42 is formed in a planar shape. The rear end face 43 (one end face directed to the fixed positioning guide 3) is formed with three claws 401 extending in the vertical direction that can be engaged with the grooves 301 of the fixed positioning guide 3 in this case. The front end surface 44 (the other end surface on the opposite side) is formed in a flat shape. The left and right side surfaces 45, 45 are formed in a planar shape, and a notch 455 and a composite-shaped opening 450 are formed between the side surfaces 45, 45. The notch 455 is formed in a substantially U shape from the front end side to approximately the center (in this case, the upper portion of the approximately U shape is on the front end side, and the lower portion is approximately U-shaped sideways toward the center). A protrusion 456 extending from the front end portion toward the vicinity of the center is provided. A coil spring 53 is attached to the protruding portion 456. The opening 450 is formed in a substantially elongated hole shape extending from the front end surface 44 side to the rear end surface 43 side of the movable positioning guide 4, and the movable positioning guide 4 is pivoted on the front side of the elongated hole shape. A shaft insertion portion 451 for the shaft 7 to be supported is provided, and the pressing member 51 is passed through the rear side, and the rear positioning guide 4 on the rear side is received by the pressing force of the pressing member 51. The groove 453 to be pressed to move toward the positioning guide 3 and the lock member 52 of the pressing member 51 are formed on the lower end side of the groove 453 to be pressed. A pressing member insertion portion 452 having a lock groove 454 is provided. The pressing member 51 is attached to the movable positioning guide 4 together with the lever 6. The pressing member 51 includes a roller 510. The lever 6 is formed so that it can be arranged in parallel with both sides of the lever body 61 and the opening 450 of the movable guide 4 on the rear side at the pivot end of the lever body 61, and the shaft of the movable side guide 4 is inserted through the shaft. A pair of lever bases 62 and 62 having a shaft passing part 621 and a pressing member passing part 622 corresponding to the part 451 and the pressing member insertion part 452 are integrally provided. In this case, the lever 6 is formed by joining two lever base members each having a long lever body shape portion and a composite lever base shape portion in which the upper portion is rectangular and the lower portion is formed by combining two large and small circles horizontally. Formed. The operating pin 63 is inserted between the upper portions of the lever bases 62 and 62. In this way, as shown in FIG. 6, the lever 6 has a pair of lever bases 62, 62 arranged on both sides of the opening 450 of the movable positioning guide 4 from above, and between the pressing member passing portions 622, 622. The roller 510 of the pressing member 51 is attached to the movable side positioning guide 4 through the pressing member insertion portion 452 of the movable side positioning guide 4, and the pressing member 51 is integrated with the movable side positioning guide 4 together with the lever 6. Assembled.

  As shown in FIG. 5, the front movable side positioning guide 4F has the same shape and structure as the rear movable side positioning guide 4R, but is 180 ° with respect to the rear movable side positioning guide 4R. Since it is attached in the reversed direction, the direction of each part is opposite to the positioning guide 4R on the rear movable side. That is, the locking protrusion 411 is formed on the rear end side slightly from the substantially center of the lower surface 41 (on the end portion side opposite to the end portion on the positioning guide 3 side on the front fixed side). The upper surface 42 is formed in a planar shape. The front end face 43 (one end face directed to the positioning guide 3 on the fixed side on the front side) is formed with three vertically extending claws 401 that can be engaged with the respective grooves 301 of the positioning guide 3 on the fixed side. The The rear end face 44 (the other end face on the opposite side) is formed in a flat shape. The left and right side surfaces 45, 45 are formed in a planar shape, and a notch 455 and a composite-shaped opening 450 are formed between the side surfaces 45, 45. The notch 455 is formed in a substantially U shape from the rear end side to approximately the center (in this case, the upper portion of the approximately U shape is on the rear end side, and the lower portion is approximately U-shaped sideways toward the center). A protruding portion 456 extending from the rear end portion toward the vicinity of the center is provided in the notch 455. A coil spring 53 is attached to the protruding portion 456. The opening 450 is formed in a substantially elongated hole shape extending from the rear end surface 44 side to the front end surface 43 side of the movable positioning guide 4, and the movable positioning guide 4 is pivotally supported on the rear side of the elongated hole shape. A shaft insertion portion 451 is provided to pass the pressing member 51 on the front side, and the front movable side positioning guide 4 receives the pressing force of the pressing member 51 to the front fixed side positioning guide 3. A groove 453 to be pressed and moved, and a lock groove 454 which is formed as a lock portion 52 of the pressing member 51 on the upper end side of the groove 453 to be pressed, and which locks and fixes the pressing member 51 around it. A pressing member insertion portion 452 having the above is provided. The pressing member 51 is attached to the movable positioning guide 4 together with the lever 6. The pressing member 51 includes a roller 510. The lever 6 is formed so that it can be arranged in parallel on both sides of the opening 450 of the front movable side positioning guide 4F at the end of the lever main body 61 and the pivot side of the lever main body 61, and the shaft insertion portion of the movable side positioning guide 4 A pair of lever bases 62 and 62 having a shaft passing part 621 and a pressing member passing part 622 corresponding to the 451 and the pressing member inserting part 452 are integrally provided. In this case, the lever 6 is composed of a long lever body shape portion and a lever base shape portion having a composite lever base shape portion in which the lower portion is rectangular and the upper portion is horizontally combined with two large and small circles. It is formed by fastening with screws. The operating pin 63 is inserted between the lower portions of the lever bases 52. In this way, the lever 6 has a pair of lever bases 62, 62 arranged on both sides of the opening 450 of the movable side positioning guide 4 from below, and the movable side positioning guide 4 between the pressing member passing portions 622, 622. The roller 510 of the pressing member 51 is mounted via a roller shaft 511 inserted through the pressing member insertion portion 452, and the pressing member 51 is assembled together with the lever 6 together with the positioning guide 4 on the movable side.

  In this manner, the movable side positioning guides 4R and 4F are each supported in the middle arm 12 by inserting one end portion on the claw 401 side into the frame 241 of the one end side support portion 24 and the other end portion. Is inserted into the insertion hole 250 of the support portion 25 on the other end side and is supported, and a coil spring 53 mounted on a projecting portion 456 formed by cutting away from the other end portion side of the movable positioning guide 4 is provided. Compressed between the end portion of the notch 455 and the other end side support portion 25, the movable side positioning guides 4 are pulled and urged in the pulling direction with respect to the fixed side positioning guides 3. Further, along with the mounting of the movable positioning guides 4 and 4, the lever body 61 of the rear lever 6 protrudes from the inside of the intermediate arm 12 to the outside through the slit 124 on the upper surface, and the lever body 61 of the front lever 6. Is projected from the inside of the intermediate arm 12 to the outside through the slit 125 on the lower surface. And (refer to FIG. 6), the two shafts 7 and 7 are respectively a pair of front and rear levers between the front and rear shaft insertion portions 126 and 126 on both side surfaces 123 and 123 of the intermediate arm 12, and between 126 and 126, respectively. The bases 62, 62, 62, 62 are inserted between the shaft passing portions 621, 621, 621, 621, and the shaft insertion portions 451, 451 of each movable side positioning guide 4. 12 is pivotally supported between the other end portion and one end portion of each of the movable side positioning guides 4 and 4 so as to be tiltable. In this way, the levers 6 and 6 and the pressing members 51 and 51 are operatively connected to the movable side positioning guides 4 and 4 to tilt the levers 6 and 6 in the directions of the fixed side positioning guides 3 and 3. Thus, the pressing members 51, 51 press the pressed grooves 453, 453 in the pressing member insertion portions 452, 452 of the movable positioning guides 4, 4, and are fitted into the lock grooves 454, 454, respectively. The movable side positioning guides 4 and 4 are pressed against the fixed side positioning guides 3 and 3 so as to fix and hold this state, and the levers 6 and 6 are tilted in the opposite directions, whereby the levers 6 and 6 are tilted in opposite directions. 6 operating pins 63 and 63 are engaged with the locking projections 411 and 411 of the movable side positioning guides 4 and 4, respectively, and the movable side positioning guides 4 and 4 are pulled back to fix the fixed side positioning guides 5 and 5. To pull away from There.

  As shown in FIGS. 4 and 5, the fixed base 14 is entirely formed of a steel material in a substantially rectangular plate shape, and has screw insertion holes at four corners corresponding to the screw holes 110 on the rear surface side of the arm 11 on the proximal end side. 140 is provided, and a plurality of screw insertion holes 141 for attaching the fixed base 14 in the vehicle compartment are further provided therearound. The fixed base 14 is attached to the rear surface of the arm 11 on the base end side by inserting screws from the screw insertion holes 140 of the fixed base 14 and fastening the screws to the screw holes 110 of the arm 11.

As shown in FIG. 3, the pedestal plate 15 is formed of a steel material in a substantially rectangular flat plate shape having a predetermined size, and a concave portion 151 is formed so as to protrude convexly on the back side at the center of the front surface. Bolt insertion holes 152 are drilled in the holes. As shown in FIGS. 4 and 5, a mounting bracket 16 is provided at the rear portion of the base plate 15. The mounting bracket 16 is made of steel and has a U-shaped cross section. A mounting hole 160 for mounting the pedestal plate 15 is formed in the front surface 161, and both side surfaces 162 and 162 are respectively formed on the left and right sides of the front surface 161. A pair of front bearings 131, 131 are projected in a substantially trapezoidal shape or a substantially triangular shape from the left and right sides of the front surface 161 toward the rear at an interval at which the front pair of bearings 131 can be fitted. 163 is bored to form a pair of bearing portions 164 and 164. In this way, the washer is disposed concentrically with the mounting hole 160 on the front surface 161 of the mounting bracket 16 so that the pedestal plate 15 is overlapped, and the mounting hole 160 of the mounting bracket and the bolt insertion hole 152 of the pedestal plate 15 are aligned. In this state, a washer, a disc spring washer, and a flat washer are sequentially arranged concentrically on the bolt insertion hole 152 on the pedestal plate 15, and the bolt 153 passes through the holes 160, 152 from the front surface of the pedestal plate 15. The mounting plate 16 is screwed into the nut 154 on the back side of the front surface 161 of the mounting bracket 16 so that the base plate 15 can rotate on the front surface 161 of the mounting bracket 16 with the bolt 153 as a center of rotation and by frictional resistance by a washer or the like. Attached so as to be held at a rotation angle.
The mounting bracket 16 of the base 15 is hinged to the arm 13 on the distal end side. In this case, the pair of bearing portions 131 and 131 of the arm 13 on the distal end side are disposed between the pair of bearing portions 164 and 164 of the mounting bracket 16, and the respective shaft insertion portions 163, 163, 130, and 130 are aligned. From this state, a cylindrical spacer 165 is disposed between the shaft insertion portions 130 and 130 of the bearing portions 131 and 131 of the arm 13 on the distal end side, and a torsion coil spring 166 is wound on the spacer 165 in a predetermined direction. Is done. In this case, one locking end of the torsion coil spring 166 is locked (fixed) to the front surface 161 of the mounting bracket 16, and the other locking end is locked (fixed) to the front surface of the arm 13 on the distal end side. Then, washers 168 are arranged concentrically with the shaft insertion portions 130, 130 on both sides of the pair of bearing portions 131, 131 of the arm 13 on the distal end side, and on one side of the bearing portions 164, 164 of the mounting bracket 16. A flat washer 169 and a disc spring washer 170 are arranged in order concentrically with the shaft insertion portion 163, and a flat washer 169 is arranged concentrically with the shaft insertion portion 163 on one side, and the mounting bracket 16 and the arm on the distal end side are arranged. A pin 171 is inserted between the 13 bearing portions 164, 164, 131, 131 from one side of the mounting bracket 16 through the shaft insertion portions 163, 163, 130, 130 and the spacers 165, and is caulked. In this way, the bearing portions 164 and 164 of the mounting bracket 16 and the bearing portions 131 and 131 of the arm 13 on the distal end side are tightened together via the washer 168, the flat washer 169 and the disc spring washer 170, and the spacer 165. One locking end of the upper torsion coil spring 166 is locked (fixed) to the front surface 161 of the mounting bracket 16, and the other locking end is locked (fixed) to the front surface of the arm 13 on the distal end side. Since the bracket 16 is urged by a predetermined spring force in a direction in which the bracket 16 rotates upward with respect to the distal arm 13, the washer 168, the plain washer 169, and the like when the base plate 15 is rotated in the vertical direction. The disc spring washer 170 generates between the pair of bearing portions 164 and 164 of the mounting bracket and the pair of bearing portions 137 and 137 of the arm 13 on the distal end side. The vertical direction between the mounting bracket 16 and the distal arm 13 is the combined force of the frictional resistance action and the force that pivots the mounting bracket 16 upward against the distal arm 13 by the torsion coil spring 166. The pedestal plate 15 is held at an arbitrary angle and can be adjusted to an arbitrary angle in the vertical direction.

Further, in the mounting of the pedestal plate 15, an arbitrary rotation between the pair of bearing portions is provided between the pair of bearing portions 164 and 164 of the mounting bracket 16 and the pair of bearing portions 131 and 131 of the arm 13 on the distal end side. In order to more securely fix and hold the angle, a lock device 8 is also provided.
As shown in FIGS. 1 and 4, the lock device 8 includes a plurality of lock grooves 81 (arranged in a substantially arc shape around the shaft of the bearing portion of either the mounting bracket 16 or the arm 13 on the distal end side. Or a lock hole), and the base plate 15 is rotated around the axis of the other bearing portion, and can be relatively moved on each lock groove 81 (or each lock hole) of one bearing portion and each lock groove 81 (or each At least one guide hole 82 formed so as to face the lock hole), and on the guide hole 82 of the other bearing portion so as to be able to advance and retreat toward each lock groove 81 (or each lock hole), and a spring The lock pin 83 is normally pressed and urged toward each lock groove 81 (or each lock hole) by the means, and the lock pin 83 and each lock groove 81 (or each lock hole) are operated by sliding the lock pin 83. There engagement and disengagement can be configured.
In this case, as described above, a plurality of small lock grooves 81 are formed in a pair of bearing portions 131 of the arm 13 on the distal end side along the arc-shaped end edge portion so as to be substantially arc-shaped (see FIG. 5). Two lock holes 82 are formed at predetermined positions on the front side corresponding to the respective lock grooves 81 of the arm 13 on the distal end of the pair of bearing portions 164 of the mounting bracket 16 with the front center of the bearing portion 164 as the center of symmetry. It is formed at a symmetrical position. In this case, the plurality of lock grooves 81 are formed in 10 ° increments in the pair of bearing portions 131 of the arm 13 on the distal end side, and each guide hole 82 is formed in the pair of bearing portions 164 of the mounting bracket 16. It is formed so that it can respond to any two of these. A pin case 85 is installed and fixed to the side surface of one bearing portion 164 of the mounting bracket 16, and a lock pin 83 is disposed via the pin case 85. The pin case 85 extends in a cylindrical shape coaxially with the two guide holes 82 of the mounting bracket 16, and has a pin insertion portion 851 having a diameter larger than that of the guide hole 82 and one end on each guide hole 82 side. And a pair of pin guides 850 (see FIG. 2) for guiding the lock pins 83 toward the respective guide holes 82, and between these pin guides 850. A connecting portion 853 (see FIG. 2) for connecting the pin guides 850 to each other, and each pin guide 850 is formed in a flat plate shape so that it can be installed on the two guide holes 82 of the mounting bracket 16, and screwed at both ends. And a fixing portion 854 having an insertion portion. The lock pin 83 is formed in a cylindrical shape having a tapered tip and a slightly smaller diameter than the inner diameter of the lock groove 81 and the guide hole 82 and is longer than the length of the pin guide 850, and is slightly lower from the tip toward the rear end side. The pin guide 850 has a flange 832 that can be arranged in the large-diameter pin insertion portion 851, and a pair of pins 831 that can be inserted into the pin guides 850 of the pin case 85, and the base end side of the pair of pins 831 And a handle 833 (see FIG. 3) having a fingertip engaging portion that is attached to the pin 831 by a screw or the like and is hooked with the fingertip. Before the handle 833 is attached to the lock pin 83, the pair of pins 831 are arranged from the base end portion of each pin 831 in a state where the coil spring 84 is wound around each pin 831 and locked to the flange 832. The pin guides 850 of the pin case 85 are passed through the large-diameter pin insertion portions 851 and are inserted through the pin case 85. Then, a handle 833 is attached to the base end portion of each pin 831 penetrated through each pin guide 850, and the lock pin 83 and the pin case 85 are assembled. By this assembly, each pin 831 of the lock pin 83 is urged by each coil spring 84 disposed in each pin guide 850, and the tip side of each pin 831 is projected from the tip of each pin guide 850. . Thus, the lock pin 83 attached to the pin case 85 has each pin 831 inserted into the two guide holes 82 of the mounting bracket 16, and the pin case 85 is installed in one bearing portion 164 of the mounting bracket 16. It is fixed to one bearing portion 164 by a screw passed through the screw insertion portion of the fixing portion 854. In this way, the lock pin 83 is disposed on the guide hole 82 of one of the bearing portions 164 of the mounting bracket 16 so as to be able to advance and retreat toward the lock grooves 81, and each lock groove 83 as a normal state by the urging force of the coil spring 84. The lock pins 83 are separated from the lock grooves 81 when the lock pins 83 are slid in the pulling direction by operating the handle 833. .

Further, in the mounting of the pedestal plate 15, a screw-type stopper 9 is also provided on the back side of the pedestal plate 15 in order to securely fix and hold the pedestal plate 15 on the front surface 161 of the mounting bracket 16 at an arbitrary rotation angle. It is done.
As shown in FIGS. 2 and 5, the screw-type stopper 9 includes a pair of screws formed around the bolt 153 on the front surface 161 of the mounting bracket 16 on the back side of the base plate 15, in this case, on both sides of the front surface 161. Holes 90, screw shafts 911 that are screwed into these screw holes 90 so as to be able to advance and retreat toward the back surface of the pedestal plate 15, and friction coefficients that are fixed to the tips of the screw shafts 911 and are in surface contact with the back surface of the pedestal plate 15 A contact member 912 made of a high-quality material, and a pair of stopper main bodies 91 each including a knob 913 that is rotatably attached to the screw shaft 911 at the rear end of the screw shaft 911. The pair of stopper main bodies 91 are mounting brackets. The back surface of the base plate 15 is inserted on both sides of the front surface 161 of the 16 so that it can be pressed. In this way, by rotating the knob 913 in the direction in which the screw shaft 911 is sent toward the back surface of the pedestal plate 15 for each stopper body 91, the contact member 912 is pressed and brought into contact with the back surface of the pedestal plate 15. The contact member 912 is separated from the back surface of the pedestal plate 15 to allow the pedestal plate 15 to rotate by pressing the back surface to restrict the movement in the rotation direction and turning the knob 913 in the opposite direction.

In this way, the monitor arm 1 has the base-side arm 11 fixed to the instrument panel or the like in the vehicle interior by the fixed base 14, and the monitor is attached to the pedestal plate 15 attached to the tip-side arm 13. Is installed in the vehicle compartment so as to be movable (adjustable) within the range of the length of each arm 11, 12, 13.
The monitor arm 1 is fixed to the attachment destination with the levers 6 and 6 facing up and down, so that the intermediate arm 12 rotates in the left-right direction around the shaft 212 with respect to the arm 11 on the base end side. The arm 13 on the distal end side can be rotated in the left-right direction around the shaft 222 with respect to the intermediate arm 12, and the mounting bracket 16 of the base plate 15 is centered on the pin 171 with respect to the arm 13 on the distal end side. The pedestal plate 15 can be rotated around the bolt 153 on the front surface 161 of the mounting braret 16. Further, when the monitor arm 1 is fixed to the attachment destination with the levers 6 and 6 directed in the left-right direction, the intermediate arm 12 can be rotated up and down around the shaft 212 with respect to the arm 11 on the base end side. Thus, the arm 13 on the distal end side can be rotated in the vertical direction around the shaft 222 with respect to the intermediate arm 12, and the mounting bracket 16 of the pedestal plate 15 is left and right about the pin 171 with respect to the arm 13 on the distal end side. The base plate 15 can be rotated around the bolt 153 on the front surface 161 of the mounting braret 16.

When adjusting the position of the monitor with the monitor arm 1, the arms 11, 12, 13 are moved in the horizontal direction or the vertical direction from the disengaged state of the fixed side and movable side positioning guides 3, 4. And the arm 11, 12, 13 is adjusted to an arbitrary rotation angle.
FIG. 8 shows a state in which the intermediate arm 12 is rotated in the left-right direction (or up-down direction) with respect to the proximal-side arm 11 to adjust the angle of the entire arm 1 in the left-right direction (or up-down direction). Yes. As shown in FIG. 8, between the proximal arm 11 and the intermediate arm 12, the intermediate arm 12 rotates in the left-right direction (or front-rear direction) via the shaft 212. In a state where the movable side positioning guide 4 of the intermediate arm 12 is separated from the fixed side positioning guide 3 of the base end side arm 11, the base end side arm 11 is separated from the base end side arm 11. When the intermediate arm 12 is rotated rightward or leftward (or vertically), the movable positioning guide 4 moves around the plurality of grooves 301 of the fixed positioning guide 3 along with the movement of the intermediate arm 12. When the intermediate arm 12 is moved without contact and the rotation of the intermediate arm 12 is stopped, the claw 401 of the movable side positioning guide 4 is rotated into a part of the groove 301 of the fixed side positioning guide 3 and the intermediate arm 12 is rotated. Stopped It is opposite in location. In this way, the intermediate arm 12 is rotated in an arbitrary direction with respect to the proximal end side arm 11 to set an arbitrary rotation angle.
FIG. 9 shows a state where the arm 13 on the distal end side is rotated in the left-right direction (or up-down direction) with respect to the intermediate arm 12 to adjust the angle in the left-right direction (or up-down direction) of the base plate 15. . As shown in FIG. 9, between the intermediate arm 12 and the distal arm 13, the distal arm 13 can rotate in the left-right direction (or vertical direction) via the shaft 222. In the state where the movable positioning guide 4 of the intermediate arm 12 is separated from the fixed positioning guide 3 of the distal arm 13, the distal arm is connected to the intermediate arm 12. When the arm 13 is rotated rightward or leftward (or up and down), the fixed-side positioning guide 3 does not contact the claw 401 of the movable-side positioning guide 4 with the movement of the arm 13 on the distal end side. When moving and stopping the rotation of the arm 13 on the distal end side, the claw 401 of the positioning guide 4 on the movable side is stopped in the groove 301 in a part of the positioning guide 3 on the fixed side, and the rotation of the arm 13 on the distal end side is stopped. Is opposed position. In this way, the arm 13 on the distal end side is rotated in an arbitrary direction with respect to the intermediate arm 12 to set an arbitrary rotation angle.
By adjusting the angle between the arms 11, 12, and 13, the arms 11, 12, and 13 are entirely directed straight from the fixed base 14 toward the front, and obliquely directed rightward or leftward (or vertically). Extend in a straight line to the right or left (or up and down) at right angles, and each arm 11, 12, 13 extends in a zigzag or Z shape from the fixed base 14 toward the front. Fold diagonally in the right or left direction (or up and down direction) in a zigzag or Z shape, bend in a zigzag shape or Z shape in a right direction in the right direction or left direction (or up and down direction), and each arm 11, 12, 13 can be folded on the fixed base 14.

When the position of the pedestal plate 15 (that is, the position of the monitor) is determined in this way, each of the front and rear levers 6 and 6 is rotated in a predetermined direction as shown in FIGS. The pressing members 51, 51 press the movable side positioning guides 4, 4 toward the fixed side positioning guides 3, 3, and engage the pressing members 51, 51 with the lock portions 52, 52. Thus, the arm 11, 12, 13 is locked at an arbitrary rotation angle.
In this case, as shown in FIG. 5, when the lever 6 on the rear side of the intermediate arm 12 is pushed rearward and tilted, the pressing member 51 attached to the lower portion of the lever 6 rotates rearward. Then, the pressed groove 453 of the rear movable side positioning guide 4 is pressed rearward, and the entire rear movable side positioning guide 4 is pressed and moved toward the rear fixed side positioning guide 3. The claw 401 of the movable positioning guide 4 and the partial groove 301 of the fixed positioning guide 3 are strongly engaged. When the lever 6 is pushed a little hard and pushed, the pressing member 51 gets over the convex portion between the pressed groove 453 and the locking groove 454 and is fitted into the locking groove 454, and the pressing member 51 is inserted into the locking groove 454. It is fixed by restraint. As a result, the intermediate arm 12 is locked at an arbitrary rotation angle with respect to the proximal end arm 11. In this case, since the plurality of grooves 301 are formed in 10 ° increments on the outer peripheral surface of the bearing 21 of the base end side arm 11, the intermediate arm 12 is in 10 ° increments with respect to the base end side arm 11. The angle can be adjusted with. Similarly, when the lever 6 on the front side of the intermediate arm 12 is pushed forward and tilted, the pressing member 51 attached to the upper portion of the lever 6 is rotated forward to position the movable side on the front side. The pressed groove 453 of the guide 4 is pressed forward, the entire movable guide 4 on the front side is pressed toward the fixed guide 3 on the front fixed side, and the claw 401 of the movable guide 4 is positioned. And a part of the groove 301 of the positioning guide 3 on the fixed side is strongly engaged. When the lever 6 is pushed a little hard and pushed, the pressing member 51 gets over the convex portion between the pressed groove 453 and the locking groove 454 and is fitted into the locking groove 454, and the pressing member 51 is inserted into the locking groove 454. It is fixed by restraint. As a result, the distal arm 13 is locked at an arbitrary rotation angle with respect to the intermediate arm 12. In this case, since the plurality of grooves 301 are formed in 10 ° increments on the outer peripheral surface of the bearing 23 of the arm 13 on the distal end side, the arm 13 on the distal end side is angled with respect to the intermediate arm 12 in increments of 10 °. Adjustment is possible.

When the mounting bracket 16 of the pedestal plate 15 is attached to the distal arm 13 so as to be pivotable in the vertical direction, the monitor arm 1 has a washer 168, a plain washer 169, a disc spring, as shown in FIG. Friction resistance action generated between the pair of bearing portions 164 and 164 of the mounting bracket 16 by the washer 170 and the pair of bearing portions 131 and 131 of the arm 13 on the distal end side, and a pair of the mounting bracket 16 by the torsion coil spring 166 The mounting bracket 16 of the pedestal plate 15 and the arm 13 on the distal end side are obtained by the resultant force of the bearing portions 164, 164 and the force for rotating and biasing the bearing portions 164 and 164 upward with respect to the pair of bearing portions 131 and 131 of the arm 13 on the distal end side. Is maintained at an arbitrary angle in the vertical direction, so that the (front) direction of the base plate 15 is adjusted to an arbitrary angle in the vertical direction. In performance, it is held at an arbitrary angle.
In addition, as shown in FIG. 10, the monitor arm 1 is provided with a lock device 8, and the lock device 8 can more reliably fix the rotation angle of the base plate 15. In this case, the pair of pins 831 of the lock device 8 are disposed on the two guide holes 82 of the one bearing portion 164 of the mounting bracket 16 so as to be able to advance and retract toward the two lock grooves 81, and the coil spring. Is normally engaged with each of the two lock grooves 81 by the urging force, and the pair of pins 831 are slid in the pulling direction by the operation of the handle 833, so that the pair of pins 831 has two lock grooves 81. 10 and 11, the handle plate 833 is pulled, and the pair of pins 831 are detached from the two lock grooves 81 and the pedestal plate 15 is rotated as shown in FIGS. When the angle is adjusted and the rotation angle is adjusted, if the handle 833 is released, the pair of pins 831 are inserted into the two lock grooves 81 at positions corresponding to the rotation angle. And, by the engagement between the lock groove 81 of the pair of pins 831 and two positions, the rotational movement of the pedestal plate 15 is restricted, the rotation angle of the base plate 15 is fixed and held. In this case, since the plurality of lock grooves 81 are formed in 10 ° increments in the pair of bearing portions 131 of the arm 13 on the distal end side, the angle of the pedestal plate 15 can be adjusted in 10 ° increments.
Further, in the monitor arm 1, as shown in FIG. 11, the pedestal plate 15 is rotatable around the bolt 153 on the front surface of the mounting bracket, and the rotation angle of the pedestal plate 15 is as shown in FIG. Further, it can be fixed and held by two screw type stoppers 9 provided on the back side of the base plate 15. In this case, the contact member 912 is pressed against the back surface of the pedestal plate 15 by turning the knob 913 in a direction in which the screw shaft 911 is sent toward the back surface of the pedestal plate 15 for each stopper main body 91, so Since the contact member 912 is separated from the pedestal plate 15 by rotating the knob 913 in the opposite direction by pressing the, and the rotation of the pedestal plate 15 is permitted. When the pedestal plate 15 is arbitrarily rotated from the loosened state 9 and the rotation angle is determined, the respective rotation angles are fixedly held by tightening the stoppers 9.

  In this way, the monitor is stably maintained at a position desired by the user for a long time by the monitor arm 1. When changing the installation position of the monitor, the levers 6 and 6 are tilted in the direction opposite to the predetermined direction to disengage the pressing members 51 from the lock portions 52, thereby making the coils. Since the lock between the arms 11, 12, 13 is automatically released by the action of the spring 53, the arms 11, 12, 13 are again connected to each other via the positioning guides 3, 4 on the fixed side and the movable side. After rotating in the left-right direction (or up-down direction) and adjusting to an arbitrary rotation angle, as described above, by tilting the levers 6 and 6 in a predetermined direction, the arms 11, 12 and 13 are moved. What is necessary is just to lock a space | interval to arbitrary rotation angles. The orientation and rotation angle of the pedestal plate 15 are also adjusted appropriately by releasing the fixed state of the pedestal plate 15 by the locking device 8 and the stopper 9. After the adjustment, the pedestal plate 15 is moved by the locking device 8 and the stopper 9. What is necessary is just to fix similarly.

  As described above, the monitor arm 1 includes the base end side arm 11, the intermediate arm 12, and the front end side arm 13, and the hinge devices 2, 2 that connect these arms 11, 12, 13 are respectively provided. , Bearings 21, 22, 23 formed at the connecting ends of the arms 11, 12, 13, and shafts 212, 222 inserted between the bearings 21, 22, 22, 23 of the arms 11, 12, 13, , At least one of the adjacent arms, in this case, the bearings 21 and 23 of the arms 11 and 13 on the base end side and the tip end side are formed in a substantially cylindrical shape and integrally formed on the outer peripheral surface thereof in the circumferential direction. The fixed-side positioning guide 3 having a plurality of grooves 301, and in this case, in this case, the intermediate arm 12 and the fixed-side positioning guides 3 and 3 are respectively disposed on the rear side and the front side of the intermediate arm 12. Advance and retreat In the normal state, it is arranged apart from the fixed side positioning guides 3 and 3 via the spring means, and the groove 301 of the fixed side positioning guides 3 and 3 is provided at the end of the fixed side positioning guides 3 and 3. , 301 are movable side positioning guides 4, 4 having claws 401, 401 engageable with them, and the intermediate arm 12 is rotatably arranged so that the movable side positioning guides 4, 4 are fixed side positioning guides. 3 and 3 are provided on levers 6 and 6 having pressing members 51 and 51 that can be pressed toward 3 and 3 and movable positioning guides 4 and 4, and movable positioning guides 4 and 4 are fixed by pressing members 51 and 51. Locking members 52 and 52 that engage with the pressing members 51 and 51 to restrict the movement of the levers 6 and 6 while being pressed by the positioning guides 3 and 3 on the side, and fix the arms 11, 12 and 13 to each other. Side and movable When the positioning guides 3 and 4 are not engaged, the positioning guides 3 and 4 are rotated in the left-right direction or the up-and-down direction so that the arms 11, 12 and 13 are adjusted to arbitrary rotation angles, and the levers 6 and 6 are moved in a predetermined direction. The movable side positioning guides 4, 4 are pressed toward the fixed side positioning guides 3, 3 by the pressing members 51, 51, thereby engaging the pressing members 51, 51 with the lock parts 52, 52. The arm 11, 12, 13 is locked at an arbitrary rotation angle, so that each arm 11, 12, 13 can be adjusted to an arbitrary angle and firmly fixed, The monitor can be held stably in a predetermined position requested by the user for a long time, even in a vehicle cabin that is susceptible to being damaged. Further, by rotating the levers 6 and 6 in a direction opposite to the predetermined direction, the engagement between the pressing members 51 and 51 and the lock portions 52 and 52 is released, and the action of each coil spring 53 causes each arm to move. Since the lock between 11, 12, and 13 can be automatically released, the change and adjustment of the angle between the arms 11, 12, and 13 can be easily performed.

Further, the monitor arm 1 has the following effects.
(1) The bearing 22 of the intermediate arm 12 includes a pair of bearing portions 221 and 221 having shaft insertion portions 220 and 220, and the bearings 21 and 23 of the arms 11 and 13 on the proximal end side and the distal end side are respectively intermediate. A substantially semi-cylindrical bearing that is formed in a substantially semi-cylindrical shape so that it can be fitted between a pair of bearing portions 221 and 221 of the arm 12 and has shaft insertion portions 210 and 230 on its axis, The bearings 21 and 23 of the arms 11 and 13 on the distal end side are arranged between the pair of bearing portions 221 and 221 of the intermediate arm 12, and the shaft cores of the shaft insertion portions 210, 220, 230 and 220 between the 221 and 221. The shafts 212 and 222 are inserted between the bearings 22 and 21 and between the shafts 22 and 23 through the shaft insertion portions 220, 210, 220, and 230, respectively. 3 is respectively Since it is integrally formed on the outer peripheral surfaces of the bearings 21 and 23 of the arms 11 and 13 on the end side and the tip side, the fixed side is connected together with the arms 11, 12 and 13 on the base end side, the intermediate side and the tip side. The positioning guides 3 and 3 can be easily incorporated.
(2) One end side support portions 24, 24 for supporting one end portion on the claw 401, 401 side of the front and rear movable side positioning guides 4, 4 on the rear side and the front side in the intermediate arm 12, respectively. And other end side support portions 25 and 25 for supporting the other end side on the opposite side, and the front and rear movable side positioning guides 4 and 4 are mounted in the intermediate arm 12. In contrast, one of the front and rear movable side positioning guides 4 and 4 is inserted and supported by the frames 241 and 241 of the one end side support portions 24 and 24, and the other end portion is supported by the other end side. Are inserted and supported in the insertion holes 250 and 250 of the portions 25 and 25, and the movable side positioning guides 4 and 4 are placed between the other end side and the other end side support portions 25 and 25 on the one end side support portions 24 and 24 side. Pull to the other end side support part 25, 25 side Since the coil springs 53 and 53 are interposed, the movable side positioning guides 4 and 4 are normally urged by the coil springs 53 and 53 in the pulling direction with respect to the fixed side positioning guides 3 and 3. The movable-side positioning guides 4 and 4 can be easily incorporated into the intermediate arm 12, and the movable-side positioning guides 4 and 4 are kept in a normal state and reliably pulled away from the fixed-side positioning guides 3 and 3. Can be tensioned.
(3) The front and rear positioning guides 4 and 4 are respectively formed with composite shaped openings 450 and 450 between both side surfaces 45 and 45, and the openings 450 and 450 are formed on the respective movable sides. The positioning guides 4 and 4 are formed in a substantially long hole shape from the other end side toward the one end side, and the movable side positioning guides 4 and 4 are formed on the other end side of the long hole shape. Shaft insertion portions 451, 451 are provided to support the shaft, and the pressing members 51, 51 are passed through one end side of the shaft, and the movable side positioning guide 4, receiving the pressing force of the pressing members 51, 51, 4 are formed as pressed grooves 453 and 453 for pressing and moving the guide 4 toward the fixed side positioning guides 3 and 3, and lock members 52 and 52 of the pressing member on the terminal side of the pressed grooves 453 and 453. Inserting the members 51 and 51 Pressing member insertion portion 452,452 having a locking groove 454,454 for restraining fixing the circumference are provided. On the other hand, the levers 6 and 6 can be arranged in parallel on both sides of the openings 450 and 450 of the movable body positioning guides 4 and 4 at the end portions of the lever bodies 61 and 61 and the pivotal support sides of the lever bodies 61 and 61, respectively. A pair of lever bases 62, 62, 62, 62 that are formed and have shaft passage portions 621, 621 and pressing member passage portions 622, 622 corresponding to the shaft insertion portions 451, 451 and the pressing member insertion portions 452, 452. A pair of lever bases 62, 62, 62, 62 are arranged on both sides of the openings 450, 450 of the movable side positioning guides 4, 4, and between the pressing member insertion portions 452, 452, Pressing portion comprising rollers 510 and 510 via roller shafts 511 and 511 inserted through the pressing member passing portions 622 and 622 of the positioning guides 4 and 4. 51 and 51 is mounted. Thus, the movable side positioning guides 4, 4 and the levers 6, 6 are arranged between the side surfaces 123, 123 of the intermediate arm 12, and the lever bodies 61, 61 are moved from the inside of the intermediate arm 12 to the outside. The shafts 7, 7 disposed between the side surfaces 123, 123 of the intermediate arm 12 are projected between the shaft passing portions 621, 621 of the pair of lever bases 62, 62, 62, 62, 621, 621. The levers 6, 6 are tilted between the other end and one end of the movable positioning guides 4, 4 by being inserted into the shaft insertion portions 451, 451 of the movable positioning guides 4, 4. The pressing members 51, 51 can be pressed into the pressing grooves 453, 453 by tilting the levers 6, 6 into the pressing member insertion portions 452, 452 of the movable positioning guides 4, 4. The movable positioning guides 4 and 4 can be fitted into the locking grooves 454 and 454 so that they can be pressed against the fixed positioning guides 3 and 3 by pressing the pressing members 51 and 51 in the intermediate arm 12. Therefore, the movable side positioning guides 4 and 4 and the levers 6 and 6 are simply operatively connected, and by operating the levers 6 and 6, the movable side positioning guides 4 and 4 are fixed to the fixed side positioning guides 3 and 3. The movable side positioning guides 4 and 4 can be reliably fixed at the pressing position.
(4) The pedestal plate 15 and the arm 13 on the distal end side include a pair of bearing portions 164 and 164 provided on the back side of the pedestal plate 15, a pair of bearing portions 131 and 131 provided on the arm 13 on the distal end side, and these bearings. With the pin 171 inserted between the portions 164, 164, 131, 131, the pedestal plate 15 can be rotated in the direction orthogonal to the rotation direction between the arms 11, 12, 13 by the arm 13 on the distal end side. And a pair of bearing portions 131, 131 of the pedestal plate 15 or a pair of bearing portions 131, 131 of the arm on the distal end side, in this case, a pair of bearing portions 131 of the arm 13 on the distal end side. , 131 and a plurality of lock grooves 81 (or lock holes) formed side by side in a substantially arc shape, and around the other axis, in this case, a pair of bearing portions 164 of the base plate 15 64, the base plate 15 is rotated so as to be relatively movable on each lock groove 81 (or each lock hole) of the arm 13 on the distal end side and opposed to each lock groove 81 (or each lock hole). In this case, the two guide holes 82 and the guide holes 82 of the pair of bearing portions 164 and 164 of the base plate 15 are disposed so as to be able to advance and retract toward the lock grooves 81 (or the lock holes), and the springs. The lock pin 83 is normally pressed and urged toward each lock groove 81 (or each lock hole) by the means, and the lock pin 83 and each lock groove 81 (or each lock hole) are operated by sliding the lock pin 83. The locking device 8 that engages and disengages the rotation angle of the base plate 15 with respect to the arm 13 on the distal end side is fixed and held, so that the wedge action by the lock pin 83 of the locking device 8 is achieved. Therefore, the arbitrary rotation angle between the mounting bracket 16 of the pedestal plate 15 and the arm 13 on the distal end side can be completely fixed, so that the pedestal rate 15 is directed to an arbitrary angle in the vertical direction. It can be fixed securely.
(5) The pedestal plate 15 is formed in a substantially flat shape, and is rotatably attached to the front surface 161 of the mounting bracket 16 on the back side via a bolt 153 inserted through the substantially center thereof. Since the rotation angle of the pedestal plate 15 is fixed and held by the screw-type stopper 9 that is inserted so that the back surface of the pedestal plate 15 can be pressed around the periphery, the pedestal plate 15 is adjusted to an arbitrary rotation angle and securely fixed. Can do.

  In this embodiment, in the hinge device 2, the groove 301 is provided at the end of the fixed positioning guide 3 and the claw 401 is provided at the end of the movable positioning guide 4. A hole may be provided at the end of the positioning guide 3 on the fixed side, and a protrusion that can be engaged with the hole may be provided at the end of the positioning guide 4 on the movable side. The effect of this can be obtained. Further, in this hinge device 2, in order to fix the pressing state of the pressing member 51 against the movable side positioning guide 4, a lock groove 454 that can be fitted and restrained on the movable side positioning guide 4 is provided. Such a lock-shaped portion may be formed on the intermediate arm 12 side. Further, in order to fix the pressing state of the pressing member 51 against the movable side positioning guide 4, a part of the lever 6 is engaged and a lockable lock part is provided on the movable side positioning guide 4 or the arm 12. Also good. Even if it does in this way, the effect similar to the said embodiment can be acquired.

  In this embodiment, the device support arm 1 is configured by the proximal arm 11, the intermediate arm 12, and the distal arm 13, but is configured by the proximal arm and the distal arm. Alternatively, the intermediate arm may be composed of a plurality of arms, and even in this case, by connecting the arms by the hinge device 2, the same effects as those of the above embodiment can be obtained. it can.

  Furthermore, in this embodiment, in order to install the locking device 8, a plurality of lock holes 81 are formed in a substantially arc shape at the ends of the pair of bearing portions 131, 131 of the arm 13 on the distal end side. The guide holes 82 are formed at predetermined positions corresponding to the end portions of the bearing portions 131 and 131 of the arm 13 on the distal end side on the side surfaces of the pair of bearing portions 164 and 164 of the mounting bracket 16. The bearing portions 164 and 164 may be disposed in the pair of bearing portions 131 and 131 of the arm 13 on the distal end side. In this case, a plurality of substantially arc-shaped ends are provided at the ends of the bearing portions 164 and 164 of the mounting bracket 16. The guide holes are formed at predetermined positions corresponding to the ends of the bearing portions 164 and 164 of the mounting bracket 16 on both side surfaces of the bearing portions 131 and 131 of the arm 13 on the distal end side. Good. The plurality of holes 81 may be replaced with a plurality of grooves. Even if it does in this way, the effect similar to the said embodiment can be acquired.

  Furthermore, in this embodiment, the device support arm 1 is exemplified as a vehicle monitor arm for installing the monitor in a vehicle such as a passenger car or a truck, but the device support arm 1 is not limited to the monitor. It can also be used in the same way when various devices such as personal computers and televisions are installed in offices and homes, or installed in airplanes or ships in addition to automobiles and other vehicles. It is possible to obtain the same effect as that of the embodiment.

1 Monitor arm (equipment support arm)
11 Base end side arm 110 Screw hole 12 Middle arm 121 Upper surface 122 Lower surface 123 Side surface 124 Slit 125 Slit 126 Shaft insertion part 127 Clamp 13 Tip side arm 130 Shaft insertion part 131 Arc-shaped flat plate (bearing part)
14 Fixed base 140 Screw insertion hole 141 Screw insertion hole 15 Pedestal plate (pedestal)
151 Concave portion 152 Bolt insertion hole 153 Bolt (shaft)
154 Nut 155 Washer 16 Mounting bracket 160 Mounting hole 161 Front surface 162 Side surface 163 Shaft insertion portion 164 Bearing portion (bearing)
165 Spacer 166 Torsion spring 168 Washer 169 Flat washer 170 Belleville spring washer 171 Pin (shaft)
2 Hinge device 21 Bearing 210 Shaft insertion portion 212 Shaft 22 Bearing 220 Shaft insertion portion 221 Bearing portion 222 Shaft 23 Bearing 230 Shaft insertion portion 24 One end side support portion 241 Frame 25 Other end side support portion 250 Insertion hole 26 Washer 27 Disc spring washer 3 Positioning guide 301 on the fixed side Groove 4 Positioning guide 401 on the movable side Claw 4F Positioning guide 4R on the front side of the movable side Positioning guide 41 on the back side of the movable side Upper surface (lower surface)
411 Locking projection 42 Lower surface (upper surface)
43 Rear end face (front end face)
44 Front end face (rear end face)
45 Side 450 Opening 451 Shaft insertion portion 452 Press member insertion portion 453 Pressed groove 454 Lock groove 455 Notch 456 Protruding portion 51 Press member 510 Roller 511 Roller shaft 52 Lock portion 53 Coil spring 6 Lever 61 Lever body 62 Lever base 621 Shaft passage portion 622 Press member passage portion 63 Actuating pin 7 Shaft 8 Lock device 81 Lock groove (or lock hole)
82 Guide hole 83 Lock pin 831 Pin 832 Flange 833 Handle 84 Coil spring 85 Pin case 850 Pin guide 851 Pin insertion part 852 Pin insertion part 853 Connection part 854 Fixing part 9 Screw type stopper 90 Screw hole 91 Stopper body 911 Screw shaft 912 Contact member 913 knob

Claims (7)

It has a plurality of arms, and the arms are connected to each other via a hinge device so that the arms can rotate with each other and the arms can be held at an arbitrary rotation angle. In the device support arm in which various devices are attached to the arm on the tip side, and various devices are movably installed in the range of the length of each arm at the attachment destination,
The hinge device is
A bearing formed at the connecting end of each arm;
A shaft inserted between the bearings of the arms;
Of the adjacent arms, at least one arm bearing is formed in a substantially cylindrical shape and integrally formed on the outer peripheral surface thereof, and a fixed positioning guide having a plurality of grooves or holes in the circumferential direction, and the other The arm is arranged so as to be able to advance and retreat toward the fixed-side positioning guide, and is normally disposed away from the fixed-side positioning guide via a spring means, and is opposed to the fixed-side positioning guide. A movable side positioning guide having a claw or a protrusion that can be engaged with a groove or a hole of the fixed side positioning guide on the part;
A lever having a pressing member that is rotatably disposed on the other arm and that can press the movable side positioning guide toward the stationary side positioning guide;
Provided on the movable side positioning guide or the other arm, the pressing member or another part of the lever is engaged in a state where the movable side positioning guide is pressed against the fixed side positioning guide by the pressing member. And a lock part for restricting the movement of the lever;
With
The arms are rotated in the left-right direction or the up-down direction depending on the non-engaged state of the positioning guides on the fixed side and the movable side, and the arms are adjusted to an arbitrary rotation angle.
By rotating each lever in a predetermined direction, the pressing member presses the movable side positioning guide toward the fixed side positioning guide, and the pressing member or another part of the lever. And the lock portion are engaged, and the respective arms are locked at the arbitrary rotation angle,
By rotating the lever in a direction opposite to the predetermined direction, the locking member is disengaged from the pressing member or another part of the lever and the lock between the arms is released. ,
A device support arm characterized by that.   The bearing of the other arm is composed of a pair of bearing portions having a shaft insertion portion, and the bearing of one arm is formed in a substantially semi-cylindrical shape so as to be fitted between the other pair of bearing portions, and on the shaft core. It comprises a substantially semi-cylindrical bearing having a shaft insertion portion, and the substantially semi-cylindrical bearing of the one arm is fitted between the pair of bearing portions of the other arm with the axis of each shaft insertion portion aligned. The equipment support arm according to claim 1, wherein the shaft is inserted between the bearings through the shaft insertion portions.   One end side support part for supporting one end part of the claw or protrusion side of the movable side positioning guide in the other arm and the other end side support part for supporting the other end side opposite thereto The movable side positioning guide has one end supported by the one end support, the other end supported by the other end support, and the other end A coil spring is interposed between the other end side support part so that the movable side positioning guide can be pulled and urged from the one end side support part side to the other end side support part side. The apparatus support arm according to claim 1 or 2, wherein the movable side positioning guide is normally biased in a pulling direction with respect to the fixed side positioning guide.   A compound-shaped opening is formed between both side surfaces of the movable positioning guide, and the opening is formed in a substantially long hole shape that is long from the other end side to the one end side of the movable positioning guide. A shaft insertion portion for pivotally supporting the movable positioning guide is provided on the other end portion side of the elongated hole shape, and a pressing member is passed through the one end portion, and the pressing member Is formed as a pressed groove for pressing and moving the movable side positioning guide toward the fixed side positioning guide, and as a locking portion of the pressing member on the terminal side of the pressed groove, A pressing member insertion portion having a lock groove for fitting and fixing the pressing member around the pressing member is provided. The lever includes a lever main body and an opening of the movable positioning guide at a pivot side end of the lever main body. Side by side A pair of lever bases formed so as to be arranged and having a shaft insertion portion and a pressing member insertion portion corresponding to the shaft insertion portion and the pressing member insertion portion, and the pair of lever bases is the movable side positioning guide A pressing member composed of a roller is mounted via a roller shaft that is disposed on both sides of the opening of the movable side through the pressing member insertion portion of the movable side positioning guide. A positioning guide and a lever are disposed between both side surfaces of the other arm, and a shaft is disposed between both side surfaces of the other arm with the lever body projecting from the inside of the other arm to the outside. The lever is inserted into each shaft passage portion of the lever base and the shaft insertion portion of the movable side positioning guide, and the lever is moved to the movable side. It is arranged so that it can tilt between the other end of the positioning guide and one end, and the pressing member can press the pressed groove by tilting the lever into the pressing member insertion portion of the positioning guide on the movable side. The movable positioning guide is disposed in the other arm so as to be press-contactable with the fixed positioning guide by pressing of the pressing member. 4. The equipment support arm according to any one of 3 above.   The plurality of arms include a proximal arm, an intermediate arm, and a distal arm, and the proximal arm includes a fixing base for supporting and fixing the entire arm to the attachment destination. The apparatus support arm according to claim 1, further comprising a pedestal for mounting various apparatuses.   The pedestal and the arm on the front end side are each provided with a bearing provided on the back side of the pedestal, a bearing provided on the arm on the front end side, and a shaft inserted between the bearings. A plurality of locking grooves which are attached so as to be rotatable in a direction perpendicular to the rotation direction between them, and are arranged in a substantially arc shape around the axis of one of the bearings of the pedestal or the arm on the distal end side, or Along with the rotation of the pedestal about the axis of the lock hole and the other bearing part, it can be relatively moved on each lock groove or each lock hole of the one bearing part and can be opposed to each lock groove or each lock hole At least one guide hole formed, and arranged on the guide hole of the other bearing portion so as to be able to advance and retreat toward each lock groove or each lock hole, and each lock groove or each as a normal state by a spring means B A lock pin that is pressed and urged toward the hole, and a lock device that engages and disengages the lock pin and the lock grooves or the lock holes by sliding operation of the lock pin. The apparatus support arm according to claim 5, wherein a rotation angle with respect to the arm is fixed and held.   The pedestal is formed in a substantially flat shape, and is rotatably attached to the bearing on the back side via a shaft inserted through the approximate center thereof, and the back side of the pedestal can be pressed around the shaft to the bearing on the back side The equipment support arm according to claim 5 or 6, wherein a rotation angle of the pedestal is fixed and held by a screw-type stopper inserted into the base.

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