JP2007255683A - Position adjustment fixing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a position adjustment fixing device having simpler construction than conventional one while reducing the number of components. <P>SOLUTION: The position adjustment fixing device 1 is provided for moving a member and fixing it to a predetermined position. It comprises a shaft member 10, a cylinder member 20, and a turning member 30. The shaft member 10 has a screwed outer peripheral face 11. The cylinder member 20 is arranged around the shaft member 10 and has a hole through which the shaft member 10 is inserted. The turning member 30 has a lock pawl 31 to be locked to the screwed outer peripheral face 11 of the shaft member 10. It is mounted on the cylinder member 20 so that the lock pawl 31 is turned between a lock position where it is locked to the screwed outer peripheral face 11 of the shaft member 10 and a release position where it is released from the screwed outer peripheral face 11 of the shaft member 10. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention generally relates to a position adjustment fixing device, and more particularly to a position adjustment fixing device used for height adjustment of a predetermined member of a chair.

2. Description of the Related Art Conventionally, as a height adjusting device for adjusting the height of furniture, electronic / electrical equipment, etc., a device capable of switching a screwing position with respect to a screw shaft with one touch is disclosed in, for example, JP-A-2005-180471. (Patent Document 1).
JP 2005-180471 A

  However, since the conventional apparatus is configured using a slide pin or the like that engages with the cam hole, it is necessary to manufacture a component having a complicated shape. For this reason, there exists a problem that the structure of an apparatus is complicated and the number of parts increases.

  An object of the present invention is to provide a position adjusting and fixing device that can be simplified in configuration as compared with conventional devices and can reduce the number of parts.

  A position adjusting and fixing device according to the present invention is a position adjusting and fixing device for moving a member and fixing it to a predetermined position, and includes a shaft member, a cylindrical member, and a rotating member. The shaft member has an outer peripheral surface formed in a screw shape or an uneven shape. The cylindrical member is disposed around the shaft member and has a hole through which the shaft member is inserted. The rotating member has an engaging claw that engages with the outer peripheral surface of the shaft member. It is attached to the cylindrical member so as to be rotated.

  Since it is constituted in this way, by setting the latching claw of the rotating member attached to the cylindrical member to the release position away from the outer peripheral surface formed in the screw shape or uneven shape of the shaft member, the cylindrical member Can be moved relative to the shaft member. In addition, the position of the cylindrical member is fixed to the shaft member by engaging the locking claw of the rotating member attached to the cylindrical member with the outer peripheral surface of the shaft member formed in a screw shape or an uneven shape. be able to. The locking claw may be formed by processing a fastening member such as a nut because it can be formed in a shape that can be locked to the outer peripheral surface of the shaft member that is formed into a screw shape or an uneven shape.

  In the position adjusting and fixing device of the present invention, it is preferable that the rotating member is arranged so as to bias the locking claw to the lock position by the weight of the rotating member.

  By comprising in this way, the position along a perpendicular direction can be fixed using the weight of a rotation member.

  The position adjusting and fixing device of the present invention further includes a biasing member disposed between the cylindrical member and the rotating member, and the biasing member is configured to always bias the locking claw to the lock position. It is preferable that

  With this configuration, the position along the direction other than the vertical direction can be fixed by the biasing member.

  In this case, the urging member is preferably a torsion coil spring attached to the rotating shaft of the rotating member.

  As described above, according to the present invention, the position adjustment and fixing device can be simplified and the number of components can be reduced as compared with the conventional device.

  One embodiment of the present invention will be described with reference to FIGS.

  FIG. 1 is a top view (A) and a front view (B) showing a position adjustment fixing device in a release position as one embodiment of the present invention. FIG. 2 is a top view (A) and a front view (B) showing a position adjusting / fixing device in a locked position as one embodiment of the present invention.

  As shown in FIGS. 1 and 2, the position adjustment fixing device 1 for moving and fixing a member to a predetermined position includes a shaft member 10, a cylindrical member 20, and a rotating member 30.

  The shaft member 10 has an outer peripheral surface formed in a screw shape or an uneven shape. In this embodiment, for example, the shaft member 10 has a screw-shaped outer peripheral surface 11. A base plate 12 is fixed to one end of the shaft member 10 as an example of a device mounting bracket. A plurality of mounting holes 13 are formed in the base plate 12 in order to fix the position adjustment fixing device 1 of the present invention to furniture such as a chair or equipment.

  The cylindrical member 20 is disposed around the shaft member 10 and has a hole through which the shaft member 10 is inserted. The cylindrical member 20 has an inner diameter that is larger than the outer diameter of the shaft member 10. Thereby, the cylinder member 20 is movable along the shaft member 10. A bearing member 21 is fixed to one end of the cylindrical member 20. A rotation shaft 22 is attached to the bearing member 21. A load receiving member 23 is attached to the other end of the tubular member 20 to attach another member that can move together with the tubular member 20. The load receiving member 23 is formed with a plurality of mounting holes 24 for mounting a movable member that is moved by the position adjusting and fixing device 1 of the present invention. The load receiving member 23 is configured so that the load of the movable member is applied.

  The rotating member 30 has a locking claw 31 at one end. The locking claw 31 has a shape that can be locked to the screw-like outer peripheral surface 11 of the shaft member 10. In this embodiment, for example, the locking claw 31 has a shape in which a nut is cut in half. The inner thread portion of the nut can be locked to the threaded outer peripheral surface 11 of the shaft member 10. Further, at one end of the rotation member 30, there is a bearing portion 32 to which the rotation shaft 22 is attached. A lever portion 33 extends on the other end side of the rotating member 30, and a handle portion 34 is attached to the end portion of the lever portion 33. For example, a magnet 35 is attached to the handle portion 34 as a fixing member. Since it is configured in this manner, as shown in FIG. 1, the handle portion 34 is held by the magnet 35 to hold the release position where the locking claw 31 is separated from the screw-like outer peripheral surface 11 of the shaft member 10. As shown in FIG. 2, the downward movement of the cylindrical member 20 is locked at a locking position where the locking claw 31 is locked to the screw-shaped outer peripheral surface 11 of the shaft member 10. Between the position shown in FIG. 1 and the position shown in FIG. 2, the turning member 30 can turn around the turning shaft 22.

  FIG. 3 is a front view showing a state in which the downward movement is locked in the position adjusting / fixing device as one embodiment of the present invention. FIG. 4 is a front view showing a state in which the position adjustment and fixing device as one embodiment of the present invention can move upward.

  As shown in FIG. 3, the downward movement of the tubular member 20 is locked at the locking position where the locking claw 31 is locked to the threaded outer peripheral surface 11 of the shaft member 10. At this time, since the gravity W corresponding to the weight of the rotating member 30 works in the vertical direction, a pressure corresponding to the gravity W is applied to the screw-like outer peripheral surface 11 of the shaft member 10. Thereby, the load receiving member 23 cannot move in the direction of the load P.

  On the other hand, as shown in FIG. 4, when the load receiving member 23 is moved in the upward direction indicated by the arrow Q, the cylindrical member 20 tends to move along the shaft member 10. At this time, the rotating member 30 rotates in the direction indicated by the arrow R so that the locking claw 31 is separated from the screw-like outer peripheral surface 11 of the shaft member 10, but the shaft member depends on the gravity W of the rotating member 30. The cylindrical member 20 can be moved in the upward direction indicated by the arrow Q along the shaft member 10 with a force that overcomes the pressure applied to the ten screw-like outer peripheral surfaces 11, that is, with a force that overcomes the frictional force.

  When the locking claw 31 is locked to the screw-like outer peripheral surface 11 of the shaft member 10 in this way, the cylindrical member 20 can be moved upward with respect to the shaft member 10, but cannot be moved downward. .

  FIG. 5 is a front view showing a state in which the downward movement is locked in the position adjustment fixing device as another embodiment of the present invention. FIG. 6 is a front view showing a state in which the position adjustment fixing device according to another embodiment of the present invention can move upward.

  As shown in FIG. 5, the position adjustment fixing device 2 is different from the position adjustment fixing device 1 shown in FIGS. 1 to 4, and a torsion coil spring 40 is used as a biasing member between the tubular member 20 and the rotation member 30. Is arranged. The torsion coil spring 40 is attached to the rotation shaft 22 of the rotation member 30 and is configured to always urge the locking claw 31 to the lock position.

  Since it is configured in this way, the cylinder member 20 is not only moved downward but also moved in the horizontal direction at the locking position where the locking claw 31 is locked to the screw-like outer peripheral surface 11 of the shaft member 10. Can be locked. That is, even if the gravity W according to the weight of the rotating member 30 does not work in the vertical direction, the pressure according to the urging force of the torsion coil spring 40 is applied to the screw-like outer peripheral surface 11 of the shaft member 10. Thereby, the load receiving member 23 cannot move in the direction of the arrow P.

  On the other hand, as shown in FIG. 6, when the load receiving member 23 is moved in the direction indicated by the arrow Q, the cylindrical member 20 tends to move along the shaft member 10. At this time, the rotating member 30 rotates in the direction indicated by the arrow R so that the locking claw 31 is separated from the screw-like outer peripheral surface 11 of the shaft member 10, but the shaft member depends on the urging force of the torsion coil spring 40. The cylindrical member 20 can be moved along the shaft member 10 in the direction indicated by the arrow Q with a force that overcomes the pressure applied to the ten screw-like outer peripheral surfaces 11, that is, with a force that overcomes the frictional force.

  When the locking claw 31 is locked to the screw-like outer peripheral surface 11 of the shaft member 10 in this way, the cylindrical member 20 moves in the direction indicated by the arrow Q with respect to the shaft member 10 against the urging force of the torsion coil spring 40. Can be moved, but cannot be moved in the direction indicated by the arrow P. In this embodiment, since the biasing force of the torsion coil spring 40 is used and gravity is not used, the position adjustment fixing device 2 is moved not only in the vertical direction but also in a direction other than the vertical direction. For example, the present invention can also be applied to horizontal movement.

  FIG. 7 is a schematic top view (A) showing a chair as viewed from above, and a schematic side view (when viewed from the side) as an example to which the position adjustment fixing device of the present invention can be applied. B).

  As shown in FIG. 7, the chair 100 includes a seat part 110 and a backrest part 120. Armrests 130 and 140 are attached to both sides of the seat 110. The armrests 130 and 140 are attached to the slide bars 150 and 160. A base plate 170 is attached to the lower ends of the slide bars 150 and 160. The seat 110 moves up and down along the slide bars 150 and 160 in accordance with the urging force of the compression coil spring 180 or a force that opposes the urging force. The cylinder member 20 of the position adjustment fixing device 1 of the present invention, that is, the load receiving member 23 is attached to the lower portion of the seat portion 110. A base plate 170 is attached to the lower end of the shaft member 10 of the position adjustment fixing device 1. Therefore, the seat 110 moves up and down between the armrests 130 and 140 and the base plate 170 along the slide rods 150 and 160 and the shaft member 10 of the position adjusting and fixing device 1.

  FIG. 8 is a side view showing a state in which the downward movement of the seat portion is locked in the chair shown in FIG. 7. FIG. 9 is a side view showing a state in which the chair shown in FIG. 7 can move upward.

  As shown in FIG. 7, when a person sits on the seat 110 when the rotating member 30 is in the release position, the person sits in the direction indicated by the arrow P along the slide bars 150 and 160 and the shaft member 10. The part 110 moves downward. At this time, the seat part 110 moves downward by the weight applied to the seat part 110 against the urging force of the compression coil spring 180. With the person sitting on the seat 110, the rotating member 30 is rotated in the direction indicated by the arrow L as shown in FIG. Lock to surface 11. This locked state is held by the gravity W of the rotating member 30.

  Next, as shown in FIG. 9, when a person stands up, the seat 110 tries to move upward in the direction indicated by the arrow Q. The load receiving member 23 also moves in the upward direction indicated by the arrow Q, and the cylindrical member 20 tends to move along the shaft member 10. At this time, the rotating member 30 rotates in the direction indicated by the arrow R so that the locking claw 31 is separated from the screw-like outer peripheral surface 11 of the shaft member 10, but the shaft member depends on the gravity W of the rotating member 30. The cylindrical member 20 can be moved in the upward direction indicated by the arrow Q along the shaft member 10 with a force that overcomes the pressure applied to the ten screw-like outer peripheral surfaces 11, that is, with a force that overcomes the frictional force. In this case, the seat portion 110 tends to rise according to the biasing force of the compression coil spring 180 that overcomes the frictional force.

  However, if a person tries to sit down on the seat 110 while supporting the armrests 130 and 140 in this process, the weight is added to the seat 110 again. At this time, the seat 110 is held against the biasing force of the compression coil spring 180 at that position, and the rotating member 30 is rotated in the direction indicated by the arrow L, and the locking claw 31 is locked at the locked position. Is locked to the screw-like outer peripheral surface 11 of the shaft member 10. This locked state is held by the gravity W of the rotating member 30.

  In this way, at the position of the seat 110 shown in FIG. 7, an elderly person or the like sits on the chair 100 with the armrests 130 and 140 supported, and locks the seat as shown in FIG. From the locked position, the chair 100 can be used as a nursing chair because the chair 100 can be used as a nursing chair because the armrests 130 and 140 are supported to support the armrests 130 and 140. Safety can be increased.

  FIG. 10 is a schematic side view showing a shelf as seen from the side as another example to which the position adjustment fixing device of the present invention can be applied.

  As shown in FIG. 10, the support base 210 of the shelf 200 is attached to the cylindrical member 20 of the position adjustment fixing device 1 of the present invention. By doing so, even if an object is placed on the support base 210, the cylinder member 20 can be locked so as not to move by the gravity P. Further, by moving the cylindrical member 20 in the direction opposite to the arrow P, the position of the support base 210 can be adjusted. Thereby, in the shelf 200, a plurality of sets of the position adjusting and fixing device 1 and the support base 210 can be provided, and the position of each support base 210, that is, the display position can be changed.

  FIG. 11 is a schematic side view showing a folding chair in a release position of the device as viewed from the side, as yet another example to which the position adjustment fixing device of the present invention can be applied. FIG. 12 is a schematic side view showing a folding chair in a locked position of the device as viewed from the side as yet another example to which the position adjustment fixing device of the present invention can be applied.

  As shown in FIG. 11, the support bar 320 of the folding chair 300 is supported by the support bar receiving member 330 attached to the cylindrical member 20 of the position adjusting and fixing device 1 of the present invention. A seat portion 310 is attached to one end of the shaft member 10 of the position adjustment fixing device 1 and one end of the support bar 320 via rotation shafts 331 and 321. The other end of the shaft member 10 and the other end of the support bar 320 are in contact with the ground. Since the rotating member 30 is in the release position, the cylindrical member 20 of the position adjusting and fixing device 1 can move along the shaft member 10, so that the support bar 320 supported by the support bar receiving member 330 according to the movement is provided. Move the slide. That is, since the angle at which the shaft member 10 and the support bar 320 intersect can be changed, the height of the seat portion 310 can be changed.

  Then, as shown in FIG. 12, when the height of the seat portion 310 is set to a predetermined position, the rotation member 30 of the position adjustment fixing device 1 is rotated to the lock position. This locked state is held by the gravity W of the rotating member 30. In this manner, the height position of the folding chair can be adjusted and fixed using the position adjustment fixing device of the present invention.

  In addition, although the above embodiment demonstrated the example in the case of applying the position adjustment fixing device of this invention to adjustment mechanisms, such as the height of a chair or a shelf, not only height adjustment but FIGS. By using the position adjustment and fixing device as shown in Fig. 1, the position adjustment and fixing device of the present invention can be applied to instruments and devices that require position adjustments other than the vertical direction, for example, horizontal position adjustments. .

  The embodiment disclosed above should be considered as illustrative in all points and not restrictive. The scope of the present invention is shown not by the above embodiments but by the scope of claims, and includes all modifications and variations within the meaning and scope equivalent to the scope of claims.

It is the top view (A) and front view (B) which show the position adjustment fixing device in a cancellation | release position as one embodiment of this invention. It is the top view (A) and front view (B) which show the position adjustment fixing device in a locked position as one embodiment of this invention. It is a front view which shows the state in which the downward movement is locked in the position adjustment fixing device as one embodiment of this invention. It is a front view which shows the state which can move to the upper direction in the position adjustment fixing device as one embodiment of this invention. It is a front view which shows the state where the downward movement is locked in the position adjustment fixing device as another embodiment of this invention. It is a front view which shows the state which can move to the upper direction in the position adjustment fixing device as another embodiment of this invention. As one example to which the position adjustment fixing device of the present invention can be applied, there are a schematic top view (A) showing a chair as viewed from above, and a schematic side view (B) as viewed from the side. . It is a side view which shows the state by which the downward movement of a seat part is locked in the chair shown by FIG. FIG. 8 is a side view showing a state in which the chair shown in FIG. 7 can move upward. It is a schematic side view which shows a shelf as seen from the side as another example to which the position adjustment fixing device of the present invention can be applied. FIG. 6 is a schematic side view showing a folding chair in a release position of the device as viewed from the side, as yet another example to which the position adjustment fixing device of the present invention can be applied. FIG. 6 is a schematic side view showing a folding chair in a locked position of the device as viewed from the side, as yet another example to which the position adjustment fixing device of the present invention can be applied.

Explanation of symbols

  1, 2: Position adjustment fixing device, 10: Shaft member, 11: Screw-shaped outer peripheral surface, 20: Tube member, 30: Rotating member, 31: Locking claw, 40: Torsion coil spring.

Claims (4)

A position adjustment fixing device for moving a member and fixing it at a predetermined position,
A shaft member having an outer peripheral surface formed in a screw shape or an uneven shape;
A cylindrical member disposed around the shaft member and having a hole through which the shaft member is inserted;
There is a locking claw that engages with the outer peripheral surface of the shaft member. The locking claw rotates between a locking position where the locking claw engages with the outer peripheral surface of the shaft member and a release position that is separated from the outer peripheral surface of the shaft member. A position adjustment fixing device comprising: a rotation member attached to the cylinder member so as to move.   The position adjusting and fixing device according to claim 1, wherein the rotating member is arranged to urge the locking claw to the lock position by a weight of the rotating member.   The biasing member arranged between the cylinder member and the rotation member is further provided, and the biasing member is configured to always bias the locking claw to the lock position. 2. The position adjustment fixing device according to 1.   The position adjusting and fixing device according to claim 3, wherein the biasing member is a torsion coil spring attached to a rotating shaft of the rotating member.

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