Classifications

• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
  • E05C3/00—Fastening devices with bolts moving pivotally or rotatively
  • E05C3/02—Fastening devices with bolts moving pivotally or rotatively without latching action
  • E05C3/04—Fastening devices with bolts moving pivotally or rotatively without latching action with operating handle or equivalent member rigid with the bolt
  • E05C3/041—Fastening devices with bolts moving pivotally or rotatively without latching action with operating handle or equivalent member rigid with the bolt rotating about an axis perpendicular to the surface on which the fastener is mounted
  • E05C3/042—Fastening devices with bolts moving pivotally or rotatively without latching action with operating handle or equivalent member rigid with the bolt rotating about an axis perpendicular to the surface on which the fastener is mounted the handle being at one side, the bolt at the other side or inside the wing
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
  • E05B1/00—Knobs or handles for wings; Knobs, handles, or press buttons for locks or latches on wings
  • E05B1/0069—Sanitary doorknobs or handles, e.g. comprising a disinfectant
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
  • E05B15/00—Other details of locks; Parts for engagement by bolts of fastening devices
  • E05B15/16—Use of special materials for parts of locks
  • E05B15/1635—Use of special materials for parts of locks of plastics materials
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
  • E05B17/00—Accessories in connection with locks
  • E05B17/002—Weather or dirt protection
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
  • E05B35/00—Locks for use with special keys or a plurality of keys ; keys therefor
  • E05B35/008—Locks for use with special keys or a plurality of keys ; keys therefor for simple tool-like keys

Definitions

• This invention relates to a locking device for an electrical panel .
• this invention relates to a locking device for an electrical panel suitable for use in particular in hygienic conditions , such as may exist , for example , in the food industry .
• Locking devices are thus known, which are made of metallic material , in which a metal part generally rotates a quarter turn to release a latch and allow the cover of the electrical panel to be opened .
• the locking of the device with respect to the cover is achieved by pressing the bushing between the cover and the device . I f the elements are not tightened properly, the bushing may wear out prematurely .
• FIG. 1 shows schematically a side view of a locking device according to an embodiment of the present invention
• FIG. 2 shows schematically a front view of a locking device according to an embodiment of the present invention
• FIG. 3 shows schematically a side view in cross section of a locking device according to an embodiment of this invention
• FIG. 3A and 3B show schematically two details of Fig . 3 ;
• FIG. 4 shows schematically a perspective view of a portion of a panel according to an embodiment of the present invention .
• a locking device 12 according to the present invention is indicated with the reference number 12 .
• the locking device 12 comprises a body 14 and a rotating element 16 .
• the body 14 is provided with a striker collar 18 proj ecting in a radial direction, and with an insertion portion 20 adapted to be inserted within a hole 22 provided on a locking element 24 .
• locking element 24 means , for example , a cover of an electrical panel 120 as shown in Fig . 4 .
• such reference is given for illustrative purposes only and is not limiting with respect to possible applications to which the principles of this invention may be applied .
• the locking device 12 further comprises a fastener 26 adapted to engage a thread 28 provided on the insertion portion 20 , so as to tighten a portion of the locking element 24 between the striker collar 18 and said fastener 26 .
• the striker collar 18 is provided with a first bushing 30 made of a polymeric material , adapted to be interposed between the striker collar 18 and the locking element 24 .
• the rotating element 16 is provided with a rotating head 32 , an elongated shank 33 housed within a through- hole 34 provided on the body 14 , and, in a position opposite to the rotating head 32 , with locking means 36 such that a rotation of the rotating head 32 causes a rotation of the locking means 36 .
• a second bushing 38 made of a polymeric material is provided at the interface between the rotating element 16 and the body 14 , which in use is exposed.
• the striker collar 18 may comprise a radial seat 40 for the first bushing 30 .
• the radial seat 40 may be substantially a step wherein the first bushing 30 may be housed .
• the first bushing 30 may protrude in a longitudinal direction toward the locking means 36 from the radial seat 40 .
• the longitudinal extension of the bushing 30 may allow an adj ustment of the pressure to which the bushing 30 is subj ected, since the bushing will deform until metal-to- metal contact is made between the body 14 and the locking element 24 .
• the first bushing 30 may be adapted to be interposed between the body 14 and the locking element 24 to avoid an exposed metal-to-metal contact zone .
• the rotating head 32 may proj ect in a radial direction with respect to the body 14 .
• the second bushing 38 may be radially interposed between the body 14 and the rotating head 32 .
• the portion of the second bushing 38 axially arranged between the rotating head 32 and the body 14 may be minimi zed .
• the portion of the second bushing 38 that in use is subj ect to the axial resultant of the forces acting between the rotating head 32 and the body 14 is minimal .
• This axial resultant depends essentially on the tightening between the locking means and the rotating element .
• the forces applied on the second bushing 38 are essentially design forces due to the coupling with the rotating head and the body, and thus may be established in the des ign so that they are not dependent on how the locking device i s installed .
• the first bushing 30 and the second bushing 38 may be made of silicone .
• the rotating head 32 may comprise a containment portion 44 adapted to partially contain the second bushing 38 .
• the containment portion 44 may have a substantially C-shaped longitudinal section facing the longitudinal axis x of the locking device 12 .
• the C shape of the containment portion 44 is adapted to prevent accidental extraction of the second bushing 38 from the rotating head .
• the rotating head 32 may comprise a raised form 46 adapted to be engaged by a counter- form seat to rotate said rotating head 32 relative to said body 14 .
• the raised form may be, for example , a trilobate form, hexagonal form, or the like .
• the locking means 36 may comprise a lever 48 proj ecting in a radial direction, adapted to engage corresponding striking means .
• the lever 48 may comprise a first portion 482 arranged substantially longitudinally, and a second portion 484 , distal to the body 14 , having a substantially radial development .
• the lever 48 may be attached to the rotating element 16 by means of a screw 50 .
• the fastener 26 may have an outer surface having a substantially hexagonal cross section adapted to engage with a corresponding key to lock the body 14 in place with respect to the locking element 24 .
• the locking device 12 may be advantageously used in electrical panels intended for use in environments subj ect to EHEDG and hygienic design guidelines .
• enclosures/ structures in this category are installed in environments (such as in meat processing, pharmaceuticals ) where the level of contamination and deposition must be minimi zed and easily removable .
• the locking device according to this invention has two possibilities for being locked, either by means of a tool adapted to engage the form provided on the rotating head, or directly with the hands , since the radial head protrudes radially .
• all exposed metal-to-metal interfaces are separated from each other by bushings made of polymeric material .
• bushing wear may be controlled at the design stage , since it is independent of installation conditions .

Landscapes

• Health & Medical Sciences (AREA)
• Epidemiology (AREA)
• Public Health (AREA)
• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Lock And Its Accessories (AREA)

Priority Applications (1)

Applications Claiming Priority (2)

Publications (1)

Family

ID=75252726

Family Applications (1)

Country Status (3)

Cited By (1)

Citations (3)

• 2021
  • 2021-01-18 IT IT102021000000761A patent/IT202100000761A1/it unknown
  • 2021-12-30 WO PCT/IB2021/062456 patent/WO2022153124A1/en unknown
  • 2021-12-30 EP EP21840179.2A patent/EP4278055A1/en active Pending

Patent Citations (3)

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