JP2007173469A - Leg adjusting mechanism and electronic apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a leg adjusting mechanism with workability in assembling/disassembling raised therein. <P>SOLUTION: The leg adjusting mechanism includes: an engagement hole 12 arranged in an electronic apparatus; screw hole members 13 to be engaged with the engagement hole 12, having a screw hole 18; and a support leg 14 for supporting the electronic apparatus, having a screw shaft 26 to be inserted to the screw hole 18. The screw hole members 13 have a cylindrical peripheral wall 17 with the screw hole 18 formed in the inner periphery. An engagement piece 21 to be engaged with the engagement hole 12 is formed in part of each peripheral wall 17 so as to be elastically deformable in the diameter direction of the screw hole 18. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a leg adjustment mechanism for adjusting the height of an electronic device with respect to an installation surface of the electronic device, and an electronic device including the leg adjustment mechanism.

  As a conventional leg adjusting mechanism, a configuration in which a leg end member provided with a screw hole is press-fitted into the lower end of a table leg, and a male screw portion of an adjuster bolt is inserted into the screw hole of the leg end member is disclosed. (For example, refer to Patent Document 1). In this leg adjustment mechanism, the height from the floor surface of each leg can be adjusted by rotating the adjuster bolt with respect to the leg end member.

  In addition, as an electronic device, for example, in a projector that projects an image on a projection surface such as a screen, a leg adjustment mechanism including a support leg is provided on the bottom surface of the housing. In the projector, when adjusting the projection position of the image, the height of the support leg and the inclination state of the projection optical axis with respect to the installation surface are adjusted by adjusting the length of the support leg by the leg adjustment mechanism.

  In this type of so-called screw-type leg adjustment mechanism, the support leg is rotated as necessary to change the insertion amount of the screw shaft of the support leg inserted into the screw hole of the housing, thereby supporting the leg. The length of the leg is changed so that the height of the housing relative to the installation surface can be arbitrarily adjusted.

  In general, in an electronic device, a resin casing is used in order to reduce the weight of the entire device and reduce the manufacturing cost. Therefore, in a conventional leg adjusting mechanism having a screw-type support leg that is assembled to a housing of an electronic device, a structure in which a metal nut is press-fitted into a resin casing and is heat-welded, or an inner surface of the casing On the side, a configuration is adopted in which a metal plate provided with a screw hole is screwed and assembled.

  For example, as shown in FIG. 5, a conventional leg adjusting mechanism 101 includes a shaft hole 112 provided in a casing 111 of an electronic device, a metal screw hole member 113 joined to the shaft hole 112, and a screw. And a support leg 114 to be inserted into the hole member 113.

  The shaft hole 112 is formed in the resin casing 111, and a cylindrical peripheral wall 112a is integrally formed. The screw hole member 113 is formed in a cylindrical shape from a metal material, and a screw hole 116 is formed in the inner periphery. The support leg 114 is formed of a metal material, and includes a screw shaft 118 that is inserted into the screw hole 116 of the screw hole member 113 and a leg portion 119 that supports the electronic device.

In the step of assembling the conventional leg adjusting mechanism 101 configured as described above to the housing 111 of the electronic device, the screw hole member 113 is heated and pressed into the shaft hole 112 by using a press-fitting tool. The screw hole member 113 is thermally welded and joined in 112. The length of the support leg 114 can be adjusted by inserting the screw shaft 118 into the screw hole 116 of the screw hole member 113 joined to the shaft hole 112.
Japanese Patent Laying-Open No. 2005-137715 (FIG. 5)

  However, in the conventional leg adjusting mechanism described above, when attaching the screw hole member to the resin casing, it is necessary to perform press-fitting work and screwing work using various tools, and the assembly work and the disassembly work are complicated. There was a problem that there was.

  In addition, when reusing materials after disassembly, the conventional leg adjustment mechanism needs to separate and collect the resin casing, metal screw hole member, metal support legs, etc., and the separation work is troublesome. There is an inconvenience. In particular, in the case where the support leg has a structure in which a resin leg is provided on a metal screw shaft, there is an inconvenience that separation of materials at the time of disassembly is complicated.

  Accordingly, an object of the present invention is to provide a leg adjusting mechanism and an electronic apparatus that enable assembly work and disassembly work without using various tools and can improve workability during assembly and disassembly.

  In order to achieve the above-described object, a leg adjusting mechanism according to the present invention includes an engagement hole provided in an electronic device, a screw hole member provided with a screw hole and engaged with the engagement hole, and inserted into the screw hole. And a support leg that supports the electronic device. The screw hole member has a cylindrical peripheral wall in which a screw hole is formed in the inner peripheral portion, and an engaging portion that engages with the engaging hole is formed in a part of the peripheral wall in the radial direction of the screw hole. It is formed to be elastically deformable.

  The leg adjusting mechanism according to the present invention configured as described above is configured to elastically deform the engaging portion of the screw hole member toward the center side in the radial direction of the screw hole when the screw hole member is assembled to the engagement hole of the electronic device. Then, the engagement portion is returned to the engagement hole to be engaged with the engagement hole. The support leg is provided such that its length can be adjusted by inserting a screw shaft into the screw hole of the screw hole member. And, in a state where the screw shaft of the support leg is inserted into the screw hole of the screw hole member, the elastic deformation of the engaging portion toward the radial center of the screw hole is restricted by the screw shaft. The engagement state of the screw hole member with respect to the engagement hole is kept good.

  An electronic apparatus according to the present invention includes the above-described leg adjusting mechanism of the present invention.

  As described above, according to the present invention, the screw hole member can be easily assembled by engaging the screw hole member with the engagement hole by elastically deforming the engaging portion. Assembly work and disassembly work can be easily performed.

  Hereinafter, specific embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
As shown in FIGS. 1 and 2, the leg adjusting mechanism 1 includes an engagement hole 12 provided in a housing 11 of an electronic device, a screw hole member 13 engaged with the engagement hole 12, and a screw. And a support leg 14 to be inserted into the hole member 13.

  The engagement hole 12 is formed in a circular shape in the housing 11 made of a resin material, and a cylindrical peripheral wall 12a protrudes toward the inside of the housing 11 and is integrally formed. A rotation restricting groove 15 for restricting the rotation of the screw hole member 13 relative to the housing 11 is formed at a position facing the inner peripheral portion of the engagement hole 12.

  The screw hole member 13 is formed in a cylindrical shape by a resin material, and is configured by combining a pair of constituent members 13a and 13b. As shown in FIG. 2, each component member 13a, 13b is formed with an engaging convex portion and an engaging concave portion which are combined with each other.

  The screw hole member 13 formed by combining the constituent members 13a and 13b has a substantially cylindrical peripheral wall 17 in which a screw hole 18 into which the support leg 14 is inserted is formed. A pair of engagement pieces 21 that are engaged with the engagement holes 12 are cut out at opposing positions on the inner peripheral portion of the peripheral wall 17 so as to be elastically deformable in the radial direction of the screw holes 18. . On the outer peripheral side of each engagement piece 21, an engagement claw 21 a that engages with one end surface of the peripheral wall 12 a of the engagement hole 12 is formed at one end facing the inside of the housing 11. A part of the screw hole 18 is formed on the inner peripheral side of each engagement piece 21.

  Moreover, the recessed part 22 in which the engaging claw 21a of the engaging piece 21 of the screw hole member 13 is inserted is formed in the position which the inner peripheral part of the engaging hole 12 opposes, respectively. When the screw hole member 13 is engaged with the engagement hole 12, each engagement piece 21 is elastically displaced toward the center side in the radial direction of the screw hole 18, so that each engagement claw 21 a is moved along the recess 22. After the insertion, the engaging pieces 21 that have been elastically deformed are returned to engage the engaging claws 21a with the end surfaces of the peripheral wall 12a.

  Further, a rotation restricting convex portion 24 that is engaged with the rotation restricting groove 15 of the engagement hole 12 is integrally formed at one end portion of the peripheral wall 17 of the screw hole member 13.

  The support leg 14 is made of a resin material, and has a cylindrical screw shaft 26 inserted into the screw hole 18 of the screw hole member 13, and a leg portion 27 formed integrally with one end of the screw shaft 26. have. The screw shaft 26 has a male screw formed on the outer peripheral portion, and is formed in a cylindrical shape with a relatively large outer diameter to ensure mechanical strength.

  Regarding the leg adjusting mechanism 1 configured as described above, a state where it is attached to the housing 11 and a state where it is detached from the housing 11 and disassembled will be described.

  First, the screw hole member 13 is configured by combining a set of constituent members. The leg adjusting mechanism 1 elastically deforms each engagement piece 21 of the screw hole member 13 toward the radial center of the screw hole 18 when the screw hole member 13 is assembled to the engagement hole 12 of the housing 11. Thus, the engaging claws 21 a of the engaging pieces 21 are inserted along the recesses 22 of the engaging holes 12. After each engaging claw 21a is inserted through each recess 22, the screw hole member 13 is returned to each engaging claw of each engaging piece 21 by returning each engaging piece 21 that has been elastically deformed. 21a is engaged with the end surface of the peripheral wall 12a of the engagement hole 12, respectively.

  Further, the screw hole member 13 is restricted from rotating around the axis of the engagement hole 12 with respect to the housing 11 by the rotation restriction convex portion 24 engaging with the rotation restriction groove 15 of the engagement hole 12. Has been. Subsequently, the screw adjustment shaft 26 of the support leg 14 is inserted into the screw hole 18 of the screw hole member 13 engaged with the engagement hole 12 of the housing 11, so that the leg adjusting mechanism 1 is attached to the housing 11. Assembled.

  In a state where the screw shaft 26 of the support leg 14 is inserted into the screw hole 18 of the screw hole member 13, the engagement piece 21 of the screw hole member 13 is elastically moved toward the radial center side of the screw hole 18 by the screw shaft 26. Deformation is restricted. For this reason, in the screw hole member 13, the engagement state between the engagement claw 21a and the end surface of the peripheral wall 12a of the engagement hole 12 is maintained well, and the screw hole member 13 is prevented from dropping from the engagement hole 12. ing.

  The leg adjusting mechanism 1 supports the housing 11 by adjusting the insertion amount of the screw shaft 26 by rotating the screw shaft 26 of the support leg 14 with respect to the screw hole 18 of the screw hole member 13. The length of the leg 14 is adjusted, and the height relative to the installation surface of the electronic device is adjusted.

  Further, when the leg adjusting mechanism 1 is detached from the housing 11 and disassembled, the screw shaft 26 of the support leg 14 is extracted from the screw hole 18 of the screw hole member 13. The screw hole member 13 can elastically deform each engagement piece 21 toward the radial center of the screw hole 18 in a state where the screw shaft 26 of the support leg 14 is not inserted into the screw hole 18. Become. The screw hole member 13 is easily removed from the engagement hole 12 by elastically deforming each engagement piece 21 and inserting each engagement claw 21a along each recess 22.

  Therefore, the leg adjusting mechanism 1 is attached to and detached from the engagement hole 12 of the housing 11 without using various tools.

  As described above, according to the leg adjusting mechanism 1, the screw hole member 13 that is engaged with the engagement hole 12 is provided. Thus, the press-fitting work and screwing work are not necessary, and the assembly work and the disassembly work of the leg adjusting mechanism 1 can be easily performed without using various tools.

  In addition, the leg adjusting mechanism 1 has a structure in which a resin screw hole member 13 and a resin support leg 14 are assembled in the engagement hole 12 of the resin casing 11 so that the work of separating materials at the time of disassembly is simplified. This is preferable in that the material is reused.

(Second Embodiment)
Next, the leg adjusting mechanism of the second embodiment will be described with reference to the drawings. In addition, since the support leg in 2nd Embodiment is the same structure as the support leg in 1st Embodiment except the external thread shape formed in the screw shaft, it attaches | subjects the same code | symbol and abbreviate | omits description.

  As shown in FIGS. 3 and 4, the leg adjusting mechanism 2 of the second embodiment includes an engagement hole 32 provided in a housing 31 of an electronic device and a screw hole engaged with the engagement hole 32. A member 33 and a support leg 14 inserted into the screw hole member 33 are provided.

  The engagement hole 32 is formed in a circular shape in the housing 31 made of a resin material. The screw hole member 33 is formed in a cylindrical shape from a resin material, and is configured by combining a pair of constituent members 33a and 33b. The screw hole member 33 formed by combining these constituent members 33a and 33b has a cylindrical peripheral wall 37 in which a screw hole 38 into which the screw shaft 26 of the support leg 14 is inserted is formed.

  One component 33 a is formed integrally with the engagement hole 32 of the housing 31. An engagement piece 41 engaged with the engagement hole 32 is cut out in a part of the peripheral wall 37 of the other component member 33b, and is formed so as to be elastically deformable in the radial direction of the screw hole 38. On the outer peripheral side of the engagement piece 41, an engagement claw 41 a that engages with the peripheral edge of the engagement hole 32 is formed at one end facing the bottom surface side of the housing 31. A part of the screw hole 38 is formed on the inner peripheral side of the engagement piece 41.

  In addition, a semi-disc-shaped flange portion 42 that is in contact with the peripheral edge portion of the engagement hole 32 is formed integrally with the component member 33b. When the component member 33 b is assembled in the engagement hole 32, the engagement claw 41 a is inserted along the engagement hole 32 by elastically deforming the engagement piece 41 toward the radial center of the screw hole 38. Is done.

  After the engaging claw 41 a is inserted along the engaging hole 32, the engaging piece 41 that has been elastically deformed is returned, so that the component claw 41 a is engaged with the peripheral edge of the engaging hole 32. The flange 42 is brought into contact with the peripheral edge on the opposite side of the engagement hole 32 while being engaged. Therefore, the constituent member 33 b is engaged with the engagement hole 32 by sandwiching the peripheral edge portion of the engagement hole 32 between the engagement claw 41 a and the flange portion 42.

  Further, the constituent member 33 b is combined with one constituent member 33 a formed on the casing 31, so that the rotation with respect to the casing 31 is reliably restricted. Therefore, the screw hole member 33 does not need to be provided with a rotation restricting groove or a rotation restricting convex portion like the screw hole member 13 described above.

  Further, in the screw hole member 33, the engagement piece 41 is restricted from being elastically deformed toward the center in the radial direction by the screw shaft 26 in a state where the screw shaft 26 is inserted into the screw hole 38. For this reason, the screw hole member 33 is kept in a good engagement state with the engagement hole 32, and is prevented from falling off the engagement hole 32.

  In the leg adjusting mechanism 2 according to the present embodiment, one component member 33a constituting the screw hole member 33 is formed integrally with the engagement hole 32 of the housing 31, so that the other component member 33b is formed in the engagement hole 32. By engaging only the screw hole member 33, the screw hole member 33 can be more easily engaged with the engagement hole 32. For this reason, according to this leg adjustment mechanism 2, workability | operativity at the time of an assembly and a decomposition | disassembly can further be improved.

  In the first embodiment described above, the screw hole member 13 is composed of a pair of constituent members 13a and 13b. However, the screw hole member 13 may be constituted by one screw hole member. Further, in each of the embodiments described above, a configuration in which the engagement hole is provided in the resin casing is employed. However, for example, the screw member is engaged with a metal chassis assembled to the casing of the electronic device. Of course, the structure provided with the engaging hole may be taken.

  Finally, a projector will be briefly described as an example of an electronic apparatus including the leg adjustment mechanism of the above-described embodiment.

  Although not shown, the projector according to the embodiment is provided with the above-described leg adjusting mechanisms at the four corners of the bottom surface of the casing, and the supporting legs are adjusted by each leg adjusting mechanism, so that the casing with respect to the installation surface can be adjusted. The inclination of the projection optical axis relative to the height of the body and the projection surface such as a screen is adjusted.

  According to the projector of the embodiment, the assembly work and the disassembly work of the leg adjustment mechanism can be easily performed, so that the productivity can be improved and the manufacturing cost can be reduced.

It is sectional drawing which shows the leg adjustment mechanism of 1st Embodiment. It is a disassembled perspective view which shows the leg adjustment mechanism of 1st Embodiment. It is sectional drawing which shows the leg adjustment mechanism of 2nd Embodiment. It is a disassembled perspective view which shows the leg adjustment mechanism of 2nd Embodiment. It is sectional drawing which shows the conventional leg adjustment mechanism.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Leg adjustment mechanism 11 Housing | casing 12 Engagement hole 13 Screw hole member 14 Support leg 17 Peripheral wall 18 Screw hole 21 Engagement piece 21a Engagement claw 26 Screw shaft

Claims (7)

An engagement hole provided in the electronic device;
A screw hole member provided with a screw hole and engaged with the engagement hole;
A screw shaft to be inserted into the screw hole, and a support leg for supporting the electronic device;
The screw hole member has a cylindrical peripheral wall in which the screw hole is formed in an inner peripheral portion, and an engaging portion that engages with the engaging hole is part of the peripheral wall. A leg adjusting mechanism formed to be elastically deformable in the radial direction.   The leg adjusting mechanism according to claim 1, wherein the engagement hole is formed in a resin casing of the electronic device.   The leg adjusting mechanism according to claim 2, wherein the screw hole member is formed of a resin material.   The leg adjusting mechanism according to claim 3, wherein the support leg is integrally formed of a resin material with the screw shaft and a leg portion that supports the electronic device.   The leg adjusting mechanism according to claim 1, wherein the screw hole member is a combination of a plurality of constituent members.   The leg adjusting mechanism according to claim 5, wherein the screw hole member is formed by combining a pair of constituent members, and one of the constituent members is formed integrally with the engagement hole.   An electronic device comprising the leg adjustment mechanism according to claim 1.

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