JP6620410B2 - Projector support device - Google Patents

Description

  The present invention relates to a technology of a projector support device for attaching a projector to a structure such as a wall or a pillar.

  Conventionally, a technique related to a projector support device installed on a structure such as a wall or a column is known (see, for example, Patent Document 1 and Patent Document 2). These projector support devices include a fixing member that is fixed to the mounting surface of the structure, a support arm that protrudes in a direction orthogonal to the mounting surface of the structure, and a connecting member that supports the projector so as to be supported by the support arm. And. The support arm is coupled to the fixing member so as to be slidable in a direction parallel to the mounting surface.

JP 2013-44853 A JP 2012-226197 A

  In the conventional projector support apparatus configured as described above, a box-shaped member having a plate surface substantially parallel to the fixed member is provided on the base end side of the support arm, and the box-shaped member and the fixed member are slid. By doing so, the support arm is configured to slide with respect to the fixed member.

  However, according to the above configuration, the weight of the projector support device is increased by the box-shaped member. Further, since it is necessary to secure a width for sliding the plate-like member in the box-shaped member, it is difficult to make the projector support device compact. Furthermore, since it is necessary to weld the box-shaped member to the base end portion of the support arm, backlash is likely to occur between the support arm and the fixing member.

  The present invention solves the above problems, and provides a projector support device that is less likely to cause play between a support arm and a fixing member, and that can be made compact and lightweight.

  The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.

That is, in Claim 1, the fixing member fixed to the mounting surface of the structure, the base end connected to the fixing member so as to be slidable in a direction parallel to the mounting surface, and the base end A support arm provided at a front end of the support arm and provided at a front end of the support arm, the projector supporting the projector by supporting the projector. A connecting member connected to the support member, wherein the fixing member is provided with a support shaft having an axial direction directed to a sliding direction of a base end portion of the support arm. A guide hole is opened at the base end of the support shaft, and the support shaft is inserted into the guide hole so that the support arm is slidably connected to the fixing member. In parallel with the support shaft, a position adjusting shaft having a male screw portion formed on the outer peripheral surface thereof is rotatably disposed, and a nut fixing portion is formed at a base end portion of the support arm, and the nut fixing portion A nut having an internal thread portion formed on an inner peripheral surface thereof is fixed, the nut is positioned in the support arm, and the external thread portion of the position adjusting shaft is screwed into the internal thread portion of the nut, By rotating a position adjusting shaft, the position of the support arm on the fixing member is adjusted, and the fixing member includes a cover member that covers a side from which the support arm protrudes, and the cover member has an opening. The support arm is disposed so as to protrude from the opening, and a cover plate that closes the opening from the inside is disposed at the base end of the support arm .

  According to a second aspect of the present invention, a plurality of the support shafts are disposed so as to be parallel, and the position adjusting shaft is disposed between the plurality of support shafts.

  The projector support device according to the present invention has an effect that it is difficult for play to occur between the support arm and the fixing member, and it is possible to reduce the size and weight.

The perspective view of a projector support apparatus. The front view of a projector support apparatus. (A) And (b) is the left view and right view of a projector support apparatus, respectively. The top view of a projector support apparatus. The figure which showed the connection part of a support arm and a fixing member. The figure which removed the cover board in the connection part of a support arm and a fixing member. The figure which showed the positional relationship of a position adjustment axis | shaft and a nut.

  Hereinafter, a projector support device 100 that is an embodiment of the projector support device according to the present invention will be described with reference to FIGS. 1 to 4. In the following description, the direction of the projector support apparatus 100 is defined by the arrows shown in the drawings. That is, in the present embodiment, the projector support device 100 is fixed to the mounting surface 2 that extends in the vertical direction and the horizontal direction in a structure such as a wall, and is disposed so as to protrude forward, which is a direction orthogonal to the mounting surface 2. Is done.

  The projector support device 100 is a device that supports the projector 1, the rear end portion is fixed to the mounting surface 2, and the projector 1 is supported by the front end portion. The projector 1 is a so-called projector and is a device that projects an image on a wall surface, a screen, or the like. The projector 1 is supported by the projector support device 100.

  As shown in FIGS. 1 to 4, the projector support apparatus 100 mainly includes a fixing member 10, a support arm 20, and a connecting member 30.

  The fixing member 10 is a box-shaped member having an internal space, and one end surface on the rear side is fixed to the mounting surface 2. The fixing member 10 includes a base member 11 and a cover member 12 that covers the front side of the base member 11 from which the support arm 20 protrudes.

  The base member 11 is a plate-like member that forms a part of the fixing member 10 and is fixed to the mounting surface 2. In this embodiment, as shown in FIGS. 5 to 7, the base member 11 is formed by combining three base plates 11a, 11b, and 11c formed by appropriately bending a metal plate.

  The cover member 12 is a plate-like member that covers the base member 11. In this embodiment, as shown in FIGS. 1 and 2, the cover member 12 is formed of a left cover 12a and a right cover 12b, and the covers 12a and 12b cover the base member 11 from the left and right. When the base member 11 is covered with the cover member 12, the gap formed on the upper surface functions as a cable through hole. The cover member 12 is formed with an opening 12h through which the support arm 20 is inserted at the center in the left-right direction.

  As shown in FIGS. 1 to 4, the support arm 20 is a flat plate-like member that is long in the front-rear direction and shorter in the vertical direction than in the left-right direction. The support arm 20 includes a proximal end portion 21 and a distal end portion 22. The base end portion 21 is connected to the fixing member 10 so as to be slidable in the vertical direction parallel to the mounting surface 2. The distal end portion 22 is provided at the proximal end portion 21 and is disposed so as to protrude in the front-rear direction orthogonal to the mounting surface 2.

  The distal end portion 22 is configured to be able to advance and retract relative to the proximal end portion 21 by sliding. Specifically, a slide groove 21 a is formed on the side surface of the base end portion 21, and a pin 22 a is inserted on the side surface of the distal end portion 22 through the slide groove 21 a. And the front-end | tip part 22 will be in the state accommodated in the base end part 21 by approaching the fixing member 10 side. Further, the distal end portion 22 is extended from the proximal end portion 21 by being separated from the fixing member 10. That is, the support arm 20 is configured to be extendable and retractable when the distal end portion 22 is accommodated or extended with respect to the proximal end portion 21.

  As shown in FIGS. 1 to 4, the connecting member 30 is disposed at the distal end portion 22 of the support arm 20. The connecting member 30 supports the projector 1 to connect the projector 1 to the support arm 20. As a result, the projector 1 is attached to the attachment surface 2 via the connecting member 30, the support arm 20, and the fixing member 10 of the projector support device 100.

  The connecting member 30 includes an arm connecting portion 31, a projector connecting portion 32, a vertical axis adjusting screw 33, a front and rear axis adjusting screw 34, a left and right axis adjusting screw 35, and the like. The arm connecting portion 31 is connected to the distal end portion 22 of the support arm 20. The projector connecting unit 32 is connected to the projector 1. The projector connecting portion 32 is configured to be slidable in the left-right direction relative to the arm connecting portion 31. Specifically, slide grooves 32 a are formed on the front and rear surfaces of the projector connecting portion 32, and pins 31 a are inserted on the front and rear surfaces of the arm connecting portion 31 through the slide grooves 32 a.

  The vertical axis adjusting screw 33, the front and rear axis adjusting screw 34, and the left and right axis adjusting screw 35 rotate the projector connecting portion 32 about the vertical axis, the front and rear axes, and the left and right axes with respect to the arm connecting portion 31, respectively. Can be made. That is, the attitude of the projector 1 with respect to the support arm 20 can be adjusted by the vertical axis adjusting screw 33, the front and rear axis adjusting screw 34, and the left and right axis adjusting screw 35.

  Next, a method for connecting the fixing member 10 and the support arm 20 in the projector support apparatus 100 will be described with reference to FIGS. 6 and 7, for convenience of explanation, the cover plate 23 is removed from the base end portion 21 of the support arm 20.

  As described above, the support arm 20 is disposed so as to be slidable in the vertical direction with respect to the fixing member 10. Specifically, between the upper and lower surfaces of the central base plate 11 a constituting the base member 11, the two support shafts 13 and 13 having the axial center direction in the vertical direction are arranged in parallel to each other. The Further, guide holes 21 b and 21 b penetrating the base end portion 21 in the vertical direction are opened at the rear end portion of the base end portion 21 of the support arm 20. Then, by inserting the support shafts 13 and 13 into the guide holes 21 b and 21 b, the base end portion 21 can be moved up and down along the support shafts 13 and 13, and the support arm 20 is attached to the base member 11 of the fixing member 10. On the other hand, it can slide.

  The base plate 11a is provided with a position adjusting shaft 14 between the support shafts 13 and 13 so as to be parallel to the support shafts 13 and 13. The position adjusting shaft 14 is rotatable about the axis, and an adjusting portion 14a is formed at the lower end thereof. A male screw portion 14 b is formed on the outer peripheral surface of the upper end portion of the position adjusting shaft 14. On the other hand, a nut fixing portion 24 through which the position adjusting shaft 14 can be inserted is formed in the central portion of the rear end of the base end portion 21 of the support arm 20 as shown in FIGS. 6 and 7. Is fixed. A female thread portion is formed on the inner peripheral surface of the nut 25.

  Then, the male screw portion 14 b of the position adjusting shaft 14 is screwed into the female screw portion of the nut 25. In the projector support device 100 configured as described above, when the user rotates the adjustment portion 14 a of the position adjustment shaft 14, the nut 25 moves in the vertical direction that is the axial direction of the position adjustment shaft 14. Thereby, the support arm 20 moves in the up-down direction in the fixing member 10. That is, the operator can adjust the vertical position of the support arm 20 on the fixing member 10 by rotating the position adjusting shaft 14.

  In the projector support device 100 according to this embodiment, as described above, the support shafts 13 and 13 are inserted into the base end portion 21 of the support arm 20, and the support arm 20 is slid up and down along the support shafts 13 and 13. It is configured. Thereby, since it is not necessary to provide a box-shaped member at the base end portion of the support arm 20 as in the prior art, the support arm 20 and the projector support device 100 can be reduced in weight.

  Further, since the projector support device 100 does not need to secure a width for sliding the plate-like member as in the prior art, the vertical width of the base end portion 21 of the support arm 20 can be reduced, and the entire device can be moved vertically. It becomes possible to make it compact. In addition, since it is not necessary to weld the box-shaped member at the base end portion 21 of the support arm 20 as in the prior art, it is possible to make it difficult to generate play between the support arm 20 and the fixing member 10.

  Further, in the present embodiment, two support shafts 13 and 13 are disposed so as to be parallel to each other, and the position adjusting shaft 14 is disposed between the two support shafts 13 and 13. Thereby, when the support arm 20 is slid up and down, the force applied to the support shafts 13 and 13 can be equalized, so that the support arm 20 can be moved stably. Note that a configuration in which only one support shaft 13 is disposed, or a configuration in which three or more support shafts 13 are disposed are possible.

  In the present embodiment, the fixing member 10 includes a cover member 12 that covers the front side from which the support arm 20 protrudes, and the cover member 12 has an opening 12h. And the support arm 20 is arrange | positioned so that it may protrude from the opening part 12h. Further, as shown in FIG. 5, a cover plate 23 that closes the opening 12 h from the inside is disposed at the base end portion 21 of the support arm 20. Thereby, even when the support arm 20 is positioned on the upper side of the fixing member 10, the internal structure can be prevented from being seen through the opening 12h, and the design of the projector support device 100 can be improved.

DESCRIPTION OF SYMBOLS 1 Projector 2 Mounting surface 10 Fixing member 13 Support shaft 14 Position adjustment shaft 20 Support arm 21 Base end part 21b Guide hole 30 Connecting member 100 Projector support apparatus

Claims (2)

A fixing member fixed to the mounting surface of the structure;
A base end portion connected to the fixing member so as to be slidable in a direction parallel to the mounting surface; a tip portion provided at the base end portion and projecting in a direction perpendicular to the mounting surface; A support arm comprising:
A connecting member that is disposed at a distal end of the support arm and connects the projector to the support arm by supporting the projector;
The fixing member is provided with a support shaft oriented in the axial direction in the sliding direction of the base end portion of the support arm,
A guide hole is opened at the base end of the support arm,
By inserting the support shaft into the guide hole, the support arm is slidably connected to the fixing member,
In the fixing member, a position adjusting shaft having a male screw portion formed on the outer peripheral surface thereof is rotatably arranged in parallel with the support shaft,
A nut fixing portion is formed at the base end portion of the support arm,
A nut having a female thread portion formed on the inner peripheral surface thereof is fixed to the nut fixing portion,
The nut is located in the support arm;
The male screw portion of the position adjustment shaft is screwed into the female screw portion of the nut, and the position of the support arm on the fixing member is adjusted by rotating the position adjustment shaft .
The fixing member includes a cover member that covers a side from which the support arm protrudes.
An opening is formed in the cover member,
The support arm is disposed so as to protrude from the opening,
A cover plate that closes the opening from the inside is disposed at the base end of the support arm .
Projector support device. A plurality of the support shafts are arranged so as to be parallel,
The position adjusting shaft is disposed between the plurality of support shafts;
The projector support device according to claim 1.

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