JP2014228095A - Clamp mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a clamp mechanism which can be easily detached, which hardly becomes loose and which can be attached stably with respect to a desk top plate and the like.SOLUTION: A clamp mechanism 1 pivotally supports a fastening tool 3 at an upper lateral piece 5 of a substantially U-shaped fitting 2. The fastening tool 3 is configured by having: a rotary member 9 having a female screw 22; and a fastening member 10 having a male screw 27 which is screwed with the female screw 22, and in which rotation is restricted with respect to the fitting 2. The rotary member 9 is supported in a rotatable manner with respect to a support hole 8 formed at the upper lateral piece 5 of the fitting 2, and an apparatus mounting part 30 is provided at an upper part of the fastening member 10. Thereby, a protrusion amount of the fastening member 10 from the upper lateral piece 5 is made to be small, and a clamp mechanism can be stabilized with respect to an external force. At the same time, even when a direction of the apparatus mounted on the apparatus mounting part 30 is changed, fastening by the fastening member 10 can be made not to become loose.

Description

  The present invention relates to a clamp mechanism for fixing a device such as a lighting device to a tabletop or the like.

  Conventionally, as this type of clamping mechanism, a screw hole having a female screw is provided in a lower horizontal piece of a substantially U-shaped main metal fitting (corresponding to the attachment metal fitting of the present invention), and a screw body is screwed into this screw hole. In addition, there is known a structure in which a tightening body is provided at the upper part of the screw body, and a knob portion for rotating the screw body is provided at the lower part of the screw body (see, for example, Patent Document 1). ). Further, a fastener is pivotally supported on the upper horizontal piece of the substantially U-shaped mounting bracket, and the fastener is provided with an operating member and a male screw provided between the upper horizontal piece and the lower horizontal piece. What comprised the body and the fastening member which has a female screw part is also known. (For example, refer to Patent Document 2).

Japanese Patent No. 4379718 Utility Model Registration No. 3168237

  However, in the structure as disclosed in Patent Document 1, when the clamp mechanism is fixed to a tabletop plate or the like, the screw body positioned below the tabletop plate or the like must be rotated. There was a problem that would be troublesome. This is noticeable when the clamp mechanism is attached to the rear edge side of a tabletop or the like so as not to get in the way.

  On the other hand, in the structure as disclosed in Patent Document 2, the clamp is moved up and down by rotating the operation member above the desk top plate or the like, so that the clamp mechanism can be easily attached to or detached from the table top plate or the like. it can. However, in the structure as disclosed in Patent Document 2, an electric appliance main body such as a lighting fixture is attached to the operation member. Therefore, when the electric appliance main body is rotated in the horizontal direction so as to change the orientation, the operation member is also There was a risk of accidental rotation. And if the said operation member rotates, the said clamping member will move upwards and the problem that the clamping | tightening by the said clamp mechanism will loosen will arise. Further, in the structure as disclosed in Patent Document 2, a male screw body is provided below the upper horizontal piece of the mounting bracket, and a fastening member having a female screw portion is screwed to the male screw body. It was necessary to increase the distance from the horizontal piece to the lower horizontal piece. For this reason, when the thickness of the tabletop or the like is relatively thin, the distance from the upper surface of the tabletop or the like to the upper horizontal piece becomes large, which is not preferable in terms of design, but also unstable to external force. There was also a problem of becoming.

  An object of the present invention is to solve the above-mentioned problems and to provide a clamp mechanism that can be easily attached to and detached from a tabletop plate, is not loosened, and can be stably attached.

  The clamp mechanism according to claim 1 of the present invention is a clamp mechanism having a substantially U-shaped mounting bracket and a clamping tool pivotally supported on an upper horizontal piece of the mounting bracket. A rotating member having a female screw; and a tightening member that has a male screw that engages with the female screw and is restricted from rotating with respect to the mounting bracket. The mounting bracket is rotatably supported with respect to a support hole formed in the upper horizontal piece of the mounting bracket, and an instrument mounting portion is provided on the upper portion of the fastening member.

  The clamp mechanism according to a second aspect of the present invention is the clamp mechanism according to the first aspect, wherein the rotating member is configured by coupling the operating body and the female screw body with the upper lateral piece interposed therebetween, and The operating part of the operating body is provided above the upper horizontal piece.

  A clamp mechanism according to a third aspect of the present invention is the clamp mechanism according to the second aspect, wherein the operating member of the rotating member is provided with a cover that covers the outer side of the male screw of the tightening member.

  Furthermore, a clamp mechanism according to a fourth aspect of the present invention is the clamp mechanism according to the third aspect, wherein the diameter of the cover portion is smaller than the diameter of the operation portion.

  The clamp mechanism according to the first aspect of the present invention is configured as described above, so that the rotating member positioned above the tabletop plate or the like can be easily rotated with respect to the tabletop plate or the like. Detachable. Moreover, since the screwing position of the female screw and the male screw with respect to the upper horizontal piece of the mounting bracket can be increased, the distance from the upper horizontal piece to the lower horizontal piece of the mounting bracket can be reduced. Then, by reducing the distance from the upper horizontal piece to the lower horizontal piece of the mounting bracket in this way, the amount of protrusion of the fastening member from the upper horizontal piece can be reduced and stabilized against external force. it can. Furthermore, the tightening member that is restricted from rotating relative to the mounting bracket is provided with the fixture mounting portion, so that the tightening can be performed even if the orientation of a fixture such as a lighting fixture attached to the fixture mounting portion is changed. The tightening by the member can be prevented from loosening.

  The rotating member is configured by connecting the operating body and the female screw body with the upper horizontal piece interposed therebetween, and the operation portion of the operating body is provided above the upper horizontal piece. Since the formation position of the female screw can be lowered, the entire length of the clamping member can be shortened, and the entire clamping mechanism can be configured compactly. Further, the turning operation of the turning member can be easily performed.

  In addition, by providing a cover that covers the outer side of the male screw of the tightening member on the operating body of the rotating member, the male screw of the tightening member is not exposed and the appearance is improved. Can do.

  Further, since the diameter of the cover portion is smaller than the diameter of the operation portion, the rotating member is rotated by grasping the cover portion, and the fastening member is moved quickly and roughly. After that, the tabletop or the like can be firmly held between the fastening member and the lower horizontal piece by grasping and rotating the operation portion.

It is a front view of the clamp which shows one Embodiment of this invention. FIG. FIG. It is AA sectional drawing. It is a top view of an attachment bracket same as the above. FIG. 6 is an exploded cross-sectional view of the mounting bracket and the operating body. It is an exploded sectional view of a fastening member same as the above. It is a right view of the state which clamped the table top board similarly. It is principal part sectional drawing of the clamp which shows the modification of this invention.

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 to 8. In the following description, the top and bottom of FIGS. 1, 2, 4, 6, 7, and 8 are the actual top and bottom. Reference numeral 1 denotes a clamping mechanism of the present invention. The clamp mechanism 1 includes a mounting bracket 2, a fastening tool 3, and a contact tool 4.

  The mounting bracket 2 is formed by bending a thick steel plate into a substantially U shape. Note that the length of the upper horizontal piece 5 of the mounting bracket 2 is longer than the length of the lower horizontal piece 6. A vertical piece 7 is provided between the upper horizontal piece 5 and the lower horizontal piece 6. A circular support hole 8 is formed through the upper horizontal piece 5 of the mounting bracket 2, and the fastener 3 is attached to the support hole 8.

The fastening tool 3 includes a rotating member 9 and a fastening member 10. The rotating member 9 includes an operating body 11 provided above and a female screw body 12 provided below. The operating body 11 and the female screw body 12 are coupled with the screw V ₁ through the support hole 8 with the upper horizontal piece 5 sandwiched from above and below. Thereby, the rotation member 9 is supported so as to be rotatable with respect to the support hole 8 of the upper horizontal piece 5. The operating body 11 includes an operating portion 13, a cover portion 14 provided integrally above the operating portion 13, a plurality of boss portions 15 arranged in an annular shape, an annular rib 16 for reinforcement, and an annular shape. The positioning groove 17 is formed. The operation portion 13, the cover portion 14, the annular rib 16, and the groove portion 17 are formed coaxially about the axis X. The plurality of boss portions 15 are provided at equal distances from the axis X, respectively. The outer end distance between the boss portions 15 in the axially symmetric position with respect to the axis X is slightly smaller than the inner diameter of the support hole 8. Further, the outer end distance is larger than the outer diameter of the annular rib 16. Therefore, the rotating member 9 is positioned in the support hole 8 by the plurality of boss portions 15. The operation unit 13 is formed in a substantially disk shape, and a plurality of recesses 18 are formed on the outer periphery thereof. Further, the outer diameter of the operation portion 13 is larger than the outer diameter of the cover portion 14 and larger than the inner diameter of the support hole 8.

The female screw body 12 includes a short cylindrical female screw portion 19, a retaining flange portion 20 formed on the outer periphery of the female screw portion 19, and an annular protrusion provided corresponding to the groove portion 17. It has a strip 21 and is configured. The female screw part 19 is open at both ends in the direction of the axis X, and a female screw 22 is formed on the inner surface thereof. Further, screw holes 23 are formed through the flange portion 20 so as to correspond to the plurality of boss portions 15. Then, the screw V ₁ is screwed into the boss portion 15 through the screw hole 23. Further, the protruding portion 21 is formed at the upper end portion of the female screw portion 19. The outer diameter of the flange portion 20 is formed larger than the inner diameter of the support hole 8. As described above, the rotation member 9 is attached to the support hole 8, so that the rotation member 9 can be rotated while being prevented from being detached from the attachment fitting 2.

  The female screw body 12 is formed such that the lower end of the female screw portion 19 is substantially equal to the lower end of the flange portion 20. That is, the rotating member 9 protrudes below the upper horizontal piece 5 of the mounting bracket 2 by the thickness of the flange portion 20. Therefore, the downward protrusion amount of the upper horizontal piece 5 of the mounting member 2 of the rotating member 9 can be kept small. That is, the position of the female screw 22 provided on the rotating member 9 with respect to the upper horizontal piece 5 can be made higher than that of the conventional structure. This means that the height of the screwing position of the female screw 22 and the male screw 27 with respect to the upper horizontal piece 5 can be made higher than that of the conventional structure. For this reason, the downward protrusion amount of the tightening body 25 from the upper horizontal piece 5 can also be suppressed small. Thereby, compared with the conventional structure, the length of the vertical piece 7 of the mounting bracket 2 can be shortened, and the distance between the upper horizontal piece 5 and the lower horizontal piece 6 can be reduced. The lower end of the female screw 22 is formed from the vicinity of the lower end of the female screw portion 19 and is located at substantially the same height as the upper horizontal piece 5 as a whole. Therefore, since the length from the lower end of the male screw 27 screwed with the female screw 22 to the lower end of the tightening body 25 can be shortened, the entire length of the tightening member 10 can be shortened. it can. With such a structure, the entire clamp mechanism 1 can be configured compactly.

  The fastening member 10 includes a male screw body 24, a fastening body 25, and a contact member 26 such as rubber. The male screw body 24 is formed in a hollow cylindrical shape having an open upper end, and a male screw 27 is formed on the outer surface thereof. A plurality of ribs 28 and protrusions 29 are formed inside the male screw body 24. The plurality of ribs 28 have the same height. The plurality of rib protrusions 29 insert and fit the lower end of an appliance such as a lighting device (not shown), and the plurality of ribs 28 regulate the insertion depth of the lower end of the appliance. Accordingly, the male screw body 24 is provided with an instrument mounting portion 30 in which a plurality of the ribs 28 and the protrusions 29 are formed. A boss receiving portion 31 is formed at the lower portion of the male screw body 24, and a screw hole 32 is formed in the boss receiving portion 31. In addition, a plurality of positioning and detent projections 33 are formed in the lower portion of the male screw body 24.

The fastening body 25 includes a boss 34, a positioning and anti-rotation recess 35 corresponding to the protrusion 33, and a rotation restricting guide 36 formed around the boss 34. It is comprised. Then, the boss portion 34, while being inserted into the boss receiving portion 31 of the male screw member 24, by screwing the screws V ₂ through the screw hole 32 in the boss portion 34, and the male screw member 24 The fastening body 25 is fixed. In the state where the tightening member 10 is screwed to the rotating member 9, the tightening body 25 rotates with respect to the mounting bracket 2 by the guide portion 36 and the vertical piece 7 of the mounting bracket 2. Be regulated. The contact member 26 is attached to the lower end of the tightening body 25. The contact tool 4 is provided at a position facing the contact member 26 of the lower horizontal piece 6.

  The male screw 27 is covered with the cover 14 in the state where the fastening member 10 is attached to the rotating member 9. Accordingly, the male screw 27 is not exposed above the operating body 11 of the rotating member 9, so that the appearance can be improved.

  Next, the operation of this embodiment will be described. First, the user moves the fastening body 25 of the fastening member 10 up and down by grasping and turning the operating body 11 of the turning member 9 of the fastening tool 3. As a result, the distance between the abutting member 26 provided at the lower end of the fastening member 10 and the abutting tool 4 attached to the lower horizontal piece 6 of the mounting bracket 2 is set between them. Adjust roughly so that the plate D can be inserted. At this time, the user may hold the operating portion 13 of the operating body 11 to rotate the rotating member 9, but hold the cover portion 14 instead of the operating portion 13. It may be rotated. This is because the load is small before the clamp mechanism 1 is attached to the tabletop plate D, and a strong force is not required to rotate the rotating member 9, so that the cover portion thinner than the operation portion 13 is used. This is because even if the rotating member 9 is rotated by gripping 14, it is not difficult to rotate the rotating member 9. Conversely, if the amount of movement of the gripping finger is the same by gripping and rotating the cover portion 14, the rotation member 9 is rotated more than when the operation portion 13 is gripped. Therefore, the fastening member 10 having the male screw 27 screwed with the female screw 22 of the rotating member 9 can be quickly moved up and down.

  Then, after roughly adjusting the distance between the abutting member 26 and the abutting tool 4, the clamp mechanism 1 is fixed to the desk so that the outer edge portion of the table top plate D is sandwiched between the fastening member 10 and the abutting tool 4. Attach to top plate D. At this time, the user moves the tightening member 10 downward by grasping and rotating the operation portion 13 of the operation body 11 of the rotation mechanism 9. In addition, since the operation unit 13 is provided above the upper horizontal piece 5, the operation unit 13 can be easily rotated. By this operation, the tabletop plate D is sandwiched between the fastening member 10 and the contact tool 4. Further, the tabletop plate D can be strongly tightened by gripping and rotating the operation portion 13 having a large diameter. In addition, since the protrusion amount of the fastening body 25 downward from the upper horizontal piece 5 can be reduced as described above, the appearance when attached to the tabletop plate D can be improved. In addition, stability against external force can be improved. Further, as described above, the female screw 22 is formed at substantially the same height as the upper horizontal piece 5. Thereby, the distance between the screwing position of the female screw 22 and the male screw 27, which is a support position when the tabletop plate D is clamped, and the contact position of the contact member 26 and the tabletop plate D is shortened. Therefore, stability against external force can be further improved.

  After the clamp mechanism 1 is attached to the tabletop board D in this way, the lower end portion of an appliance (not shown) is inserted and attached to the appliance attachment portion 30. And if it rotates around the axis X and changes the direction of the said instrument, the force which rotates around the axis X will be added to the said fastening member 10 in which the said instrument attachment part 30 was provided. However, since the guide portion 36 abuts against the vertical piece 7 of the mounting bracket 2, the rotation of the fastening member 10 with respect to the mounting bracket 2 is restricted. The tightening of the tightening member 10 with the male screw 27 can be prevented from loosening. Further, even if the orientation of the device is changed, the tightening by the tightening member 10 does not loosen, so that the lower end portion of the device can be press-fitted into the device mounting portion 30, and the device is attached to the clamp mechanism 1. It can be attached stably.

  In addition, this invention is not limited to the above embodiment, A various deformation | transformation implementation is possible within the range of the summary of invention. For example, in the above embodiment, the rotating member is constituted by the operating body and the female screw body. However, as shown in FIG. 9A, the female screw 41 is formed on the rotating member 40, and the upper horizontal piece 5 A ring-shaped member 42 for preventing the removal may be coupled to the rotating member 40 from below. Further, as shown in FIG. 9B, a female screw 51 is formed in the lower part of the female screw body 50, and the upper end of the female screw body 50 is extended to form a cover 52, which is removed from above the upper horizontal piece 5. An operation body 53 for stopping and turning may be coupled to the female screw body 50.

  The clamp mechanism of the present invention can be used for the purpose of fixing a lighting device, a monitor, a telephone stand or the like to a tabletop or the like.

DESCRIPTION OF SYMBOLS 1 Clamp mechanism 2 Mounting bracket 3 Fastening tool 5 Upper horizontal piece 8 Support hole 9 Rotating member 10 Tightening member 11 Operation body 12 Female screw body 13 Operation part 14 Cover part 22 Female screw 27 Male screw 30 Instrument mounting part 36 Guide Part D Tabletop

Claims (4)

In a clamp mechanism having a substantially U-shaped mounting bracket and a fastener pivotally supported on an upper horizontal piece of the mounting bracket,
The fastener includes a turning member having a female screw, and a fastening member that has a male screw that is screwed with the female screw and is restricted from rotating with respect to the mounting bracket;
The rotating member is rotatably supported with respect to a support hole formed in an upper horizontal piece of the mounting bracket,
A clamp mechanism, wherein an instrument mounting portion is provided on an upper portion of the tightening member.   The rotating member is configured by connecting an operating body and a female screw body with the upper horizontal piece interposed therebetween, and an operation portion of the operating body is provided above the upper horizontal piece. The clamping mechanism according to claim 1.   The clamp mechanism according to claim 2, wherein a cover for covering an outer side of the male screw of the tightening member is provided on the operating body of the rotating member.   The clamp mechanism according to claim 3, wherein a diameter of the cover portion is smaller than a diameter of the operation portion.

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