JP4762334B2 - magnet catch - Google Patents

Description

  The present invention relates to a magnet catch that is used to connect and hold two objects by magnetic attraction in equipment manufacturing or use sites.

  Conventionally used magnet catches are formed integrally with pedestal portions on the left and right side surfaces of a case main body containing a magnet, and are provided with fixing holes for mounting objects on the pedestal portions (see Patent Document 1).

  In the magnet catch of Patent Document 1, since the left and right pedestal portions do not move relative to the case body, the distance between the fixing holes is constant, and the pitch dimension of the receiving hole on the mounting object side is the fixing distance. When the distance between the holes did not match, it could not be applied to the mounting object.

  Manufacturing the magnet catch in which the distance between the fixing holes is changed every time the pitch dimension of the receiving hole on the mounting object side is different results in the production of a small quantity and a small amount of production cost. In addition, when various types of magnet catches having different distances between the fixing holes are produced, the inventory management becomes complicated.

JP 2008-19646 A

  The subject of this invention is providing the magnet catch which can adjust the distance between the fixing holes of a pair of bases in a wide range corresponding to the pitch dimension of the receiving hole provided in the mounting object.

  The magnet catch of the present invention comprises a case main body containing a magnet and a pair of pedestals for fixing the case main body to a mounting object, and each pedestal is formed from a pedestal insertion opening of the case main body. It is composed of an adjustment arm that appears and disappears in the storage chamber and a pedestal main body that has a fixing hole to the mounting object, and a guide slot is provided at the inner end of each adjustment arm, and the back cover plate of the pedestal storage chamber Guide protrusions to be inserted into the both guide slots are provided, a pair of locking tongues that are elastically deformed in the thickness direction of the side walls are provided on another side wall of the pedestal storage chamber, and the locking tongue pieces are locked. The dentition is fixedly held on the case body, and the distance between the fixing holes of the pair of pedestals is increased / decreased by elastically engaging the dentition with the locked dentition on the side surface of each adjustment arm. To be adjusted.

  As described above, in the magnet catch of the present invention, the difference between the length of the guide slot of the adjustment arm and the length of the guide projection of the back cover plate is calculated by sliding the pair of bases toward or away from each other. Within the double range, the arrangement position of the pair of pedestals with respect to the case body can be changed, and a locking tooth row of a pair of locking tongue pieces provided on another side wall of the pedestal storage chamber is provided. The pair of pedestals can be fixedly held on the case main body at the change position by elastically engaging the locked tooth row of the side surface of each adjustment arm. That is, according to the present invention, the distance between the fixing holes of the pair of pedestals can be adjusted easily and accurately in accordance with the pitch dimension of the receiving holes provided in the mounting target, It can be widely used for various mounting objects having different pitch dimensions of the receiving holes.

  A single type of magnetic catch can be used for many types of mounting objects with different pitch dimensions of the receiving holes, so production costs can be reduced by mass production and inventory management is simplified. .

FIG. 1 is a front view of a magnet catch according to an embodiment of the present invention, in which a pair of left and right pedestals are inserted deepest into a case body. FIG. 2 is a plan view of the magnet catch of FIG. FIG. 3 is a bottom view of the magnet catch of FIG. FIG. 4 is a left side view of the magnet catch of FIG. FIG. 5 is a right side view of the magnet catch of FIG. 6 is a cross-sectional view taken along line AA in FIG. 7 is a cross-sectional view taken along line BB in FIG. 8 is a cross-sectional view taken along the line CC of FIG. 9 is a cross-sectional view taken along the line DD of FIG. FIG. 10 is a front view of a receiver used in combination with the magnet catch of FIG. FIG. 11 is a plan view of the receiver shown in FIG. 12 is a cross-sectional view taken along line EE of FIG. FIG. 13 is a front view of the magnet catch shown in FIG. 1 and the receiving tool shown in FIG. 14 is a front view of the case main body used in the magnet catch of FIG. FIG. 15 is a plan view of the case main body of FIG. FIG. 16 is a left side view of the case main body of FIG. FIG. 17 is a right side view of the case main body of FIG. 18 is a cross-sectional view taken along line FF in FIG. 19 is a cross-sectional view taken along line GG in FIG. 20 is a cross-sectional view taken along line HH in FIG. FIG. 21 is an enlarged view of a chain line circle portion of FIG. 22 is a front view of the left pedestal used in the magnet catch of FIG. FIG. 23 is a rear view of the pedestal of FIG. 24 is a plan view of the pedestal of FIG. 25 is a bottom view of the pedestal of FIG. FIG. 26 is a right side view of the pedestal of FIG. 27 is a cross-sectional view taken along the line II of FIG. FIG. 28 is a front view of the right pedestal used in the magnet catch of FIG. FIG. 29 is a plan view of the pedestal of FIG. FIG. 30 is a bottom view of the pedestal of FIG. FIG. 31 is a left side view of the pedestal of FIG. 32 is a sectional view taken along line JJ of FIG. FIG. 33 is a front view of the back cover plate used in the magnet catch of FIG. FIG. 34 is a plan view of the back cover plate of FIG. FIG. 35 is a right side view of the back cover plate of FIG. 36 is a cross-sectional view taken along the line KK of FIG.

  In the illustrated embodiment, a magnet body 2 and a pedestal storage chamber 3 are provided adjacent to a case body 1 formed of a magnetic flux permeable synthetic resin, and a pair of left and right side walls 4 of the pedestal storage chamber 3 are provided. , 5 are provided with base insertion openings 6, 7. After the magnet 8 is housed in the magnet housing chamber 2, the inner lid plate 10 is lightly press-fitted into the step portion 9 between the magnet housing chamber 2 and the pedestal storage chamber 3, and the inner lid plate 10 is sealed to the case body 1 by welding. Has been. Thus, the magnet catch can be applied to a clean room of a semiconductor manufacturing facility.

  The pair of left and right pedestals 11 and 12 are pedestal main bodies 16 and 17 having adjustment arms 13 and 14 which are projected and retracted from the pedestal insertion openings 6 and 7 into the pedestal storage chamber 3 and fixing holes 18 and 19 to the mounting object 15. Are integrally formed. The pedestal insertion openings 6 and 7 are formed by forming recesses 20 and 21 in an offset shape on one long side of the rectangle, and are fitted in the recesses 20 and 21 on the outer peripheral contours of the cross-sections of the adjustment arms 13 and 14. Convex portions 22 and 23 are formed. Further, a recess 24 is formed on the upper surface of the adjustment arm 13 of the left pedestal 11 adjacent to the convex portion 22, and the lower surface of the adjustment arm 14 of the right pedestal 12 is adjacent to the convex portion 23. Thus, the raised portion 25 is formed, and the raised portion 25 is fitted into the recessed portion 24. As a comprehensive action of these fittings, the pair of left and right pedestals 11 and 12 are closely assembled and do not fluctuate at any position that slides relatively in the left and right direction.

  The back opening of the pedestal storage chamber 3 is provided with check projections 27 and 28 having a right triangle shape on the front and rear sides of the back cover plate 26, and a pair of front and rear side walls of the pedestal storage chamber 3 corresponding to this. The inner surfaces of 29 and 30 are provided with non-return recesses 31 and 32 having a triangular cross section. When the back cover plate 26 is fitted into the back surface opening of the pedestal storage chamber 3 with pressure applied, the back protrusions 27 and 28 engage with the check recesses 31 and 32, so that the back cover plate 26 is attached to the case body 1. It is firmly fixed. These right-angled triangular check protrusions and check recesses can also be provided on the four sides of the front, rear, left and right.

  Guide slots 33 and 34 that are long in the sliding direction of the pedestal are provided at the inner ends of the adjustment arms 13 and 14 of the pair of left and right pedestals 11 and 12. When the adjusting arms 13 and 14 are pushed into the pedestal storage chamber 3 most deeply, the root portions of the guide slots 33 and 34 overlap each other. A guide projection 35 to be inserted into both guide slots 33 and 34 is provided at substantially the center of the inner surface of the back cover plate 26. The distal end surface of the guide protrusion 35 is in contact with the inner lid plate 10 together with the adjustment arm 14 of the right pedestal 12. The inner surface of the main part of the back plate 26 is in contact with the adjustment arm 13 of the left pedestal 11.

A pair of left and right engaging tongues 36 and 37 are provided on the front side wall 42 of the pedestal storage chamber 3 orthogonal to the side walls 4 and 5 provided with the pedestal insertion openings 6 and 7. The locking tongue pieces 36 and 37 have three rectangular sides cut from the base material of the side wall 42, and elastically deform in the thickness direction of the side wall 42 with the remaining one side as a fulcrum. It is. Two locking tooth rows 38 and 39 are provided on the inner surface side of the front end of each locking tongue piece 36 and 37. On the side surfaces of the adjusting arms 13 and 14, six locked tooth rows 40 and 41 are provided. The bases 11 and 12 are firmly held with respect to the case body 1 by elastically engaging the locking tooth rows 38 and 39 with the locked tooth rows 40 and 41.
The distance between the fixing holes 18 and 19 of the pedestal main bodies 16 and 17 to the mounting object 15 is changed by taking the positions where the pedestals 11 and 12 are close to the case main body 1 or separated from the case main body 1.

  The holder 44 that is magnetically attracted to the magnet catch 43 is one in which a magnetic plate 46 is accommodated in a case 45 formed of a magnetic flux permeable synthetic resin, and then a back plate 47 is welded and sealed. The magnet catch 43 is fastened and fixed to the mounting object 15 by synthetic resin bolts and nuts 50 and 51 inserted into the receiving holes 48 and 49 of the mounting object 15 from the fixing holes 18 and 19 of the base bodies 16 and 17. The The receiver 44 is fastened and fixed to another mounting object 54 by synthetic resin bolts and nuts 57 and 58 inserted into the receiving holes 55 and 56 of the other mounting object 54 from the fixing holes 52 and 53 of the case 45. Is done.

DESCRIPTION OF SYMBOLS 1 Magnet catch case body 2 Magnet storage chamber 3 Pedestal storage chamber 4 Side wall of pedestal storage chamber 5 Side wall of pedestal storage chamber 6 Pedestal insertion opening 7 Pedestal insertion opening 8 Magnet 9 Step part 10 Inner lid plate 11 Pedestal 12 Pedestal 13 Adjustment arm 14 Adjustment arm 15 Magnet catch mounting object 16 Pedestal body 17 Pedestal body 18 Fixing hole 19 to the mounting object 19 Fixing hole 20 to the mounting object Recess 21 of the base insertion opening Recess of the base insertion opening 22 Convex part of adjustment arm 23 Convex part of adjustment arm 24 Indentation part 25 of adjustment arm 25 Raised part 26 of adjustment arm Back cover plate 27 Back projection of back cover plate 28 Back projection of back cover plate 29 Side wall 30 of storage chamber Side wall 31 of base storage chamber Non-return recess 32 of base storage chamber Non-return recess 33 of base storage chamber Guide slot 34 of adjustment arm Arm guide slot 35 guide protrusion 36 locking tongue piece 37 locking tongue piece 38 locking tooth row 39 locking tooth row 40 locked tooth row 41 locked tooth row 42 front surface of base storage chamber Side wall 43 Magnetic catch 44 Receiving member 45 Receiving case 46 Magnetic plate 47 Receiving back plate 48 Receiving hole 49 for mounting object Receiving hole 50 for mounting object Bolt / nut 51 Bolt / nut 52 Fixing hole 53 for case Case Fixing hole 54 of another mounting object 55 Receiving hole 56 of another mounting object 56 Receiving hole 57 of another mounting object 57 Bolt / nut 58 Bolt / nut

Claims (1)

  A case main body containing a magnet and a pair of pedestals for fixing the case main body to an object to be mounted are configured as separate bodies, and the respective bases are adjusted so as to be projected and retracted from the pedestal insertion opening of the case main body into the pedestal storage chamber And a pedestal main body having a fixing hole for an object to be mounted. A guide slot is provided at an inner end of each of the adjustment arms, and is inserted into the guide slots on the back cover plate of the pedestal storage chamber. And a pair of locking tongues that elastically deform in the thickness direction of the side wall on the other side wall of the pedestal storage chamber. A magnet catch that allows the base to be fixedly held on the case body by elastically engaging the locked tooth row of the side surface of the arm for use, and the distance between the fixing holes of the pair of bases to be increased or decreased. .

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