JP2806358B2 - Tilt foot structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tilt foot structure which is disposed on the bottom of a device such as a CRT projector or an LCD projector and which is used when height adjustment is required for changing a projection angle on a screen. ,Especially,
The present invention relates to a tilt foot structure that can be adjusted in height only by a very simple operation without affecting the appearance of the device.

[0002]

2. Description of the Related Art In general, a tilt foot that can be adjusted in a height direction is provided on the bottom surface of various devices such as a CRT projector and an LCD projector in order to change a projection angle of the projector. Conventionally, as this kind of tilt foot structure, for example, Japanese Utility Model Laid-Open No. 2-104681
There is a moving / installation structure of a housing described in Japanese Patent Application Laid-Open Publication No. HEI 10-303, 1988.

FIG. 8 is an enlarged perspective view of a main part showing a tilt foot structure in the moving / installing structure of the housing of Japanese Utility Model Application Laid-Open No. 2-104681. As shown in FIG. 1, this conventional tilt foot structure is used for an apparatus 200 such as a projector.
The casters 100 arranged on the bottom of the
It is configured as a tilt foot that can be adjusted in the height direction of zero.

The caster 100 includes a wheel 101, a support 102, a shaft 103, and a male screw 104, and a hexagon wrench hole 104a is formed in the upper surface of the male screw 104. And this caster 100 is the device 1
The male screw portion 104 is screwed into the female screw portion 201 provided on the bottom surface of the device 1 to be attached to the apparatus 1 side. A leg cover 202 that covers the entire periphery of the caster 100 is attached to the bottom edge of the device 1.

According to the conventional tilt foot structure having such a configuration, since the caster 100 is screwed to the bottom surface of the device 200, the caster 1
The caster 100 is inserted into the hexagonal wrench hole 104a and rotated appropriately, so that the caster 100 is
The height of the device 200 can be adjusted.

[0006] Since the caster 100 is entirely covered and concealed by the leg cover 202 provided on the bottom edge of the device 200, the caster 100 is exposed from the bottom side of the device 200, and the entire device is exposed. There is no loss of aesthetics.

[0007]

However, in such a conventional tilt foot structure, each time the height of the apparatus is adjusted, the caster must be rotated using a tool such as a hexagon wrench. Therefore, there is a problem that the operation is complicated and the height cannot be adjusted without a tool or the like.

In the conventional tilt foot structure, since a cover for covering the tilt foot structure is provided on the bottom side of the apparatus, a cover as a part separate from the apparatus must be added or attached. In addition, there is a problem that the cost of the entire apparatus increases.

Furthermore, in the case of the tilt foot structure requiring a cover as described above, the cover is not sufficient only in a range where the tilt foot structure can be covered and hidden, and is disposed on the entire bottom side of the device in consideration of the design of the entire device. Had to be set up. For this reason, there has also been a problem that the cover is a great constraint on the degree of freedom in designing and designing the apparatus.

The present invention has been proposed in order to solve such problems of the prior art, and the height can be adjusted only by a very simple operation without affecting the appearance of the apparatus. , To provide a tilt foot structure.

[0011]

In order to achieve the above object, a tilt foot structure according to a first aspect of the present invention is a tilt foot structure provided on a bottom surface of an apparatus such as a projector and capable of adjusting a height. A shaft that penetrates a through hole formed in the bottom surface of the device such as the projector, and is mounted so as to be movable in the height direction of the device, and a foot portion that is mounted on a lower end of the shaft and that has a concave shape in longitudinal section And a rib protruding in a cylindrical shape around a through hole through which the shaft penetrates the bottom surface of the projector or the like, and can be stored inside the concave shape of the foot portion, and can be moved to the projector or the like device. And a button that is constantly urged outwardly of the device and that can be repeatedly pressed from outside the device, and that the button is punched in a long hole shape along the moving direction of the button. Been, said shaft anda button through hole penetrating the inner wall of the button through-hole,
The urging force applied to the button portion makes contact with the shaft, and holds the shaft immovably.

In the tilt foot structure according to the second aspect, the urging means for urging the button portion may include a projection protruding from the button portion, one end wound around the projection, and another. A coil spring whose end side is in contact with the rear end in the movement direction with which the button portion of the device such as the projector engages;
There is a configuration consisting of

According to a third aspect of the present invention, the tilt foot structure engages with a rib on the bottom surface of the apparatus such as the projector so that the rib can protrude and retract from the bottom surface of the rib by its own weight.
An auxiliary cover formed in a cylindrical shape through which the shaft can penetrate is provided.

Further, in the tilt foot structure according to a fourth aspect of the present invention, the projector or the like is provided with a guide member for guiding the movement of the button.

According to the tilt foot structure of the present invention having such a structure, the fixing of the shaft for height adjustment can be released by pressing the button from the outside of the apparatus, and the button can be released by simply releasing the button. Since the shaft is fixed again, only by pressing and releasing the button part,
The height of the device can be easily adjusted.

Further, since the shaft which moves in the height direction is covered by the foot portion and the rib on the bottom surface side of the apparatus, the shaft is not exposed to the outside even if the height of the apparatus is changed, so that the appearance of the apparatus can be improved. Has no effect. As a result, it is not necessary to provide special means such as a cover as in the related art, and the cost of the apparatus can be reduced, and the degree of freedom in design and design can be ensured.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The preferred embodiments of the tilt foot structure of the present invention will be described below with reference to the drawings. [First Embodiment] First, a first embodiment of the tilt foot structure of the present invention will be described with reference to FIGS. FIG. 1 is an overall exploded perspective view showing a tilt foot structure of the present embodiment, and FIG. 2 is a cross-sectional side view of a main part showing a tilt foot structure of the present embodiment with a shaft fixed. FIG. 4 is a cross-sectional side view of a main part in a state where the fixing of the shaft is released. 4 and 5 are overall views showing a projector device using the tilt foot structure according to the present embodiment, wherein FIG. 4 (a) is a front view and FIG. 4 (b) is a right side view.

As shown in these figures, the tilt foot structure according to the present embodiment is disposed on the bottom surface of various devices such as a projector to adjust the height of the devices.
In the present embodiment, an example is shown in which the projector device 10 is attached to two locations on the left and right sides of the bottom surface on the front side.

Reference numeral 20 denotes a shaft.
It penetrates through a pair of upper and lower through holes 12 (12a, 12b) formed in a button engaging portion 11 described later formed on the bottom surface of the device 10 and is attached so as to be movable in the height direction of the device 10. .

Reference numeral 30 denotes a foot portion, which is fixed to and attached to the lower end of the shaft 20. As shown in FIG. 1, the longitudinal section has a concave shape, and a concave portion 31 is formed. The foot portion 30 and the shaft 20 allow the device 10
It constitutes the leg which supports.

Reference numeral 40 denotes a rib, which is a through hole 1 on the bottom of the apparatus 10.
It protrudes in a cylindrical shape around 2b, and can be stored inside the concave shape of the foot portion 30. Reference numeral 50 denotes a button portion, which is movably engaged with button engagement portions 11 formed on the left and right sides of the lower front end of the device 10.

The button engaging portion 11 is formed as a concave portion in which the button portion 50 can be engaged on the left and right sides of the front lower end of the device 10. As described above, the button engaging portion 11 has upper and lower surfaces. Is a pair of through holes 12 (1
2a, 12b) are perforated. A guide wall 11 a for guiding the movement of the button portion 50 is provided on the inner side of the bottom surface of the button engagement portion 11 so as to protrude along the moving direction of the button portion 50.

The button portion 50 engaged with the button engaging portion 11 is always urged by an urging means for urging outwardly of the device 10, from outside the device 10 along the guide wall 11 a. , Can be repeatedly pressed.

The urging means for urging the button unit 50 includes:
As shown in FIGS. 1 to 3, a protrusion 51 protruding from the distal end side of the button portion 50 in the pressing direction, and a coil as an elastic member interposed between the protrusion 51 and the back end of the button engagement portion 12. It comprises a spring 52. And the coil spring 52
Has one end wound around this projection, and the other end,
The button 50 comes into contact with the rear end of the button engaging portion 11 in the moving direction, so that the button 50 can be repeatedly pressed from the outside.

Further, as shown in FIGS. 1 to 3, the button portion 50 is provided with an elongated button through hole 53. The button through-hole 53 is formed in a long hole shape along the moving direction of the button 50 so that the shaft 20 that has passed through the device 10 can pass through. And
The inner wall of the button through-hole 53 comes into contact with the penetrating shaft 20 by the urging force of the coil spring 52 to the button part 50, and holds the shaft 20 immovably.

Next, the operation of the tilt foot structure according to the present embodiment having such a configuration will be described. First, normally, the button portion 50 is urged toward the outside of the device 10 by the urging force of the coil spring 52, and
Since the shaft 20 is held by the inner wall of No. 3,
This tilt foot structure is used as a leg of the device 10 as the device 1
0 is maintained at a constant height and angle (the state shown in FIG. 2).

Next, when changing the height of the front side of the apparatus 10, the button 50 is first pressed. When the button portion 50 is pressed, the coil spring 52 is compressed, and the button portion 50 moves inside the button engaging portion 11 toward the inside of the device. When the button part 50 moves, the long button-shaped button through-hole 53 also moves toward the inside of the device, and the shaft 20 held by the inner wall of the button through-hole 53 is released from being fixed. As a result, the shaft 20 is in a state in which the shaft 20 can move in the vertical direction (the state shown in FIG. 3).

Therefore, in this state, the shaft 20 can be moved up and down to a desired height. And
After the height of the shaft 20 is set, by releasing the button 50, the button 50 returns to the original position again by the resilient force of the coil spring 52, and the inner wall of the elongated button through hole 53 is formed. Abuts on the shaft 20, and the shaft 20 is held and fixed at the set position.

In this way, by changing and adjusting the height of the front side of the apparatus 10, the projection angle of the projector can be easily changed to an arbitrary angle as shown in FIGS. it can.

Then, at this time, in the case shown in FIG.
The ribs 40 are housed in the foot portion 30, and when viewed from the entirety of the device 10, the ribs 40 do not appear to be visible, but appear to be attached to the bottom of the device 10. On the other hand, in the case shown in FIG.
Since the shaft 20 is housed in the foot portion 30 and the rib 40, the shaft 20 is not visible, and the foot portion 30 and the rib 40 appear to be attached to the bottom of the device 10.

As described above, according to the tilt foot structure of the present embodiment, the fixing of the height adjusting shaft 20 can be released by pressing the button portion 50 from outside the device.
The shaft 20 can be fixed again simply by releasing the button portion 50. Thus, the height of the device 10 can be easily adjusted only by the operation of pressing and releasing the button unit 50.

The shaft 20 moving in the height direction
Is covered with the foot portion 30 and the ribs 40 on the bottom surface side of the device, so that the shaft 20 is not exposed to the outside even if the height of the device 10 is changed, and the tilt foot structure of the device 10 Does not affect appearance. As a result, it is not necessary to provide special means such as a cover as in the related art, and it is possible to reduce the cost of the device 10 and to secure a wide degree of freedom in design and design.

[Second Embodiment] Next, a second embodiment of the tilt foot structure of the present invention will be described. FIG.
FIG. 7 is a cross-sectional side view of a main part showing a tilt foot structure of the present embodiment with a shaft fixed, and FIG. 7 is a cross-sectional side view of a main part also showing a state where the shaft is unlocked.

As shown in these figures, the tilt foot structure of the present embodiment is a modified embodiment of the above-described first embodiment, and has a cylindrical rib 40 protruding from the bottom surface of the device 10.
An auxiliary cover 60 formed in a cylindrical shape through which the shaft 20 can penetrate is provided. This auxiliary cover 60 is provided with the rib 4
The shaft 20 is formed in a tubular shape that can be stored in the inside of the shaft.

An engagement cover projection 61 is provided on the outer peripheral edge of the upper end opening of the auxiliary cover 60 so as to project therefrom. The rib 40 also has a rib projection 41 for engagement formed on the inner peripheral edge of the bottom opening, and the rib projection 41 and the cover projection 61 of the auxiliary cover 60 are engaged with each other.

According to the tilt foot structure of the present embodiment, the auxiliary cover 60 is normally housed in the rib 40 (the state shown in FIG. 6), and the shaft 20 is When moved downward, the auxiliary cover 60
Is exposed by its own weight from the bottom opening of the rib 40, and the cover projection 61 is held in a state of being in contact with and engaging with the rib projection 41 (the state shown in FIG. 7).

Thus, even if the shaft 20 is further moved downward to protrude the tilt foot longer toward the apparatus bottom side than in the case of the above-described first embodiment, the shaft 20 is covered by the auxiliary cover 61. Therefore, the shaft 20 is not seen from the outside of the device 10. Therefore, according to the tilt foot structure of the present embodiment, the tilt foot structure can be used for a device that requires a larger change in height.

[0038]

As described above, according to the tilt foot structure of the present invention, without affecting the appearance of the device.
The height can be adjusted only by a very simple operation.

[Brief description of the drawings]

FIG. 1 is an overall exploded perspective view showing a tilt foot structure according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional side view of a main part showing a tilt foot structure according to the first embodiment of the present invention, with a shaft fixed.

FIG. 3 is a cross-sectional side view of a main part of the tilt foot structure according to the first embodiment of the present invention in a state where a shaft is released from being fixed.

FIGS. 4A and 4B are overall views showing a projector device using the tilt foot structure according to the first embodiment of the present invention, wherein FIG. 4A is a front view and FIG.

FIGS. 5A and 5B are overall views showing a projector device using the tilt foot structure according to the first embodiment of the present invention, wherein FIG. 5A is a front view and FIG. 5B is a right side view.

FIG. 6 is a cross-sectional side view of a main part showing a tilt foot structure according to a second embodiment of the present invention, with a shaft fixed.

FIG. 7 is a cross-sectional side view of a main part of a tilt foot structure according to a second embodiment of the present invention, showing a state where a shaft is not fixed.

FIG. 8 is an enlarged perspective view of a main part showing a conventional tilt foot structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Projector apparatus 11 ... Button engaging part 12 ... Through-hole 20 ... Shaft 30 ... Foot part 31 ... Depression 40 ... Rib 50 ... Button part 51 ... Projection 52 ... Coil spring 53 ... Button through-hole 60 ... Auxiliary cover

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) F16M 7/00 F16M 11/24

Claims (4)

(57) [Claims] 1. A height adjustable tilt foot structure provided on a bottom surface of a device such as a projector, wherein the tilt foot structure penetrates a through hole formed in a bottom surface of the device such as the projector and the height of the device. A shaft mounted movably in the direction, a foot portion having a concave longitudinal section mounted on a lower end of the shaft, and a cylindrical projection around a through hole through which the shaft penetrates a bottom surface of the apparatus such as the projector. A rib provided inside the concave portion of the foot portion and movably engaged with a device such as the projector, and constantly urged outward from the device, and repeatedly pressed from outside the device. A button portion, and a button through hole, which is formed in the button portion in a long hole shape along the moving direction of the button portion and through which the shaft passes. A tilt foot structure wherein an inner wall abuts on the shaft by an urging force on the button portion, and holds the shaft immovably. 2. An urging means for urging the button portion comprises: a projection protruding from the button portion; one end wound around the projection; and the other end side of the device such as the projector. 2. The tilt foot structure according to claim 1, further comprising: a coil spring abutting on a rear end in the movement direction with which the button portion engages. 3. An auxiliary cover formed in a rib on a bottom surface of an apparatus such as the projector so as to protrude and retract from the bottom surface of the rib by its own weight, and is formed in a cylindrical shape through which the shaft can pass. Item 3. The tilt foot structure according to Item 1 or 2. 4. The device such as the projector, further comprising a guide member for guiding the movement of the button unit.
4. The tilt foot structure according to 2 or 3.