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CN-122029710-A - Mounting portion with fixing mechanism, adapter for electrical installation apparatus, and electrical installation apparatus

CN122029710ACN 122029710 ACN122029710 ACN 122029710ACN-122029710-A

Abstract

A mounting portion of an electrical installation device, the mounting portion being attachable to at least one current busbar, the mounting portion comprising a hooking mechanism arranged on the mounting portion and adapted to hook onto the at least one busbar, a securing mechanism comprising a latch arm arranged on the mounting portion, the latch arm being adapted to grasp an attachment point fixed relative to the at least one busbar, the latch arm being further adapted to engage with the attachment point when the mounting portion is attached to the at least one busbar, the latch arm comprising an arm portion defining a concave arc having a predefined radius, the arm portion being adapted to sit on a section of the mounting portion defining a convex arc having a predefined radius and having a centre point located behind the attachment point when the mounting portion is attached to the at least one busbar.

Inventors

  • D. Maizel
  • J. SCHWARTZ

Assignees

  • 维纳尔产业有限公司

Dates

Publication Date
20260512
Application Date
20240828
Priority Date
20230901

Claims (16)

  1. 1. A mounting portion (10) of an electrical installation device, the mounting portion being attachable to at least one current busbar (20 a,20b,20 c), the mounting portion comprising: a hooking mechanism (40) arranged on the mounting portion (10) and adapted to hook onto the at least one busbar (20A, 20B, 20C), A securing mechanism (400), the securing mechanism comprising: A latch arm (420), said latch arm (420) being arranged on said mounting portion (10), said latch arm (420) being adapted to grasp an attachment point (26, 226), said attachment point (26, 226) being fixed with respect to said at least one busbar (20A, 20B, 20C), The latch arm (420) is further adapted to engage with the attachment point (26, 226) when the mounting portion (10) is attached to the at least one busbar (20A, 20B, 20C), The latch arm (420) comprises an arm portion (410) defining a concave arc having a predefined radius (r), the arm portion (410) being adapted to sit on a section (110) of the mounting portion (10) defining a convex arc having the predefined radius (r) and having a center point (16) located behind the attachment point (26, 226) when the mounting portion (10) is attached to the at least one busbar (20 a,20b,20 c).
  2. 2. The mounting portion (10) of claim 1, wherein the center point (16) is located above an uppermost bus bar (20A) of the at least one bus bar (20A, 20b,20 c) when the mounting portion (10) is attached to the at least one bus bar (20A, 20b,20 c).
  3. 3. The mounting portion (10) according to one of the preceding claims, wherein the latch arm (420) is adapted to be permanently pressed in an upward direction to the attachment point (26, 226).
  4. 4. The mounting portion (10) according to one of the preceding claims, wherein the arm portion (410) is adapted to be slidingly seated on the section (110).
  5. 5. The mounting portion (10) according to one of the preceding claims, wherein the attachment point (26, 226) is located below a top edge (21) of the uppermost one (20) of the at least one busbar (20 a,20b,20 c) when the mounting portion (10) is attached to the at least one busbar (20).
  6. 6. The mounting portion (10) according to one of the preceding claims, wherein the latch arm (420) has a saw tooth profile (430) adapted to grasp the attachment point (26, 226).
  7. 7. The mounting portion (10) according to one of the preceding claims, wherein the attachment point (26, 226) is a lower front edge (26) of one of the at least one busbar (20A, 20b,20 c), in particular of the uppermost busbar (20A), when the mounting portion (10) is attached to the at least one busbar (20A, 20b,20 c).
  8. 8. The mounting portion (10) of one of the preceding claims, wherein the attachment point (26, 226) is located at a touch protection cover (200) adapted to be mounted in front of the at least one busbar (20 a,20b,20 c).
  9. 9. The mounting portion (10) according to one of the preceding claims, wherein the securing mechanism (400) further comprises a spring member (440) for generating a clamping force adapted to act on the latch arm (420) to permanently press the latch arm (420) against the attachment point (26, 226) when the mounting portion (10) is attached to the at least one busbar (20 a,20b,20 c).
  10. 10. The mounting portion (10) according to one of the preceding claims, wherein the section (110) is formed by a rib.
  11. 11. The mounting portion (10) according to one of claims 1 to 9, wherein the section (110) is formed by a plurality of ribs (150) spaced apart from each other.
  12. 12. The mounting portion (10) according to one of the preceding claims, further comprising a section (165) adapted to support the arm portion (410) when the mounting portion (10) is attached to the at least one busbar (20), the section (165) defining the same concave arc as the arm portion (410).
  13. 13. The mounting portion (10) according to one of the preceding claims, wherein the securing mechanism (400) comprises a release mechanism (450) adapted to be operated to release the locking arm (420) from the attachment point (26, 226).
  14. 14. An adapter comprising a mounting portion (10) according to one of the preceding claims and designed to receive an electrical installation device on the mounting portion (10) and to electrically connect the electrical installation device with a bus bar system.
  15. 15. Mounting device or electrical assembly having a mounting portion (10) according to one of the preceding claims 1 to 13.
  16. 16. The electrical installation device or electrical component according to the preceding claim, wherein the electrical installation device or component is one of an engine control unit, a power supply unit, an adapter for an electrical device, a measuring device, a display device, a converter unit, a fuse holder, a switch isolator with a fuse, a fuse switch isolator, an overvoltage protection device, a lightning protection device, a communication device, a leakage protector, an interference suppression device, a controller.

Description

Mounting portion with fixing mechanism, adapter for electrical installation apparatus, and electrical installation apparatus Technical Field The present invention relates to a mounting portion having a fixing mechanism, an adapter for an electrical mounting apparatus, and an electrical mounting apparatus or assembly having such a mounting portion. Background The mounting portion or adapter is used in electrical installations to attach electrical mounting equipment to the current bus system. The current bus bar system includes one or several bus bars, and optionally a touch protection device that covers the bus bars of the bus bar system. Typically, the current bus system is enclosed in a switchgear cabinet along with the mounting equipment mounted thereon. The known mounting portion and adapter are equipped with fastening members (e.g. hooks, clamps) by means of which the mounting portion or adapter is attached to the bus bar. In this way, they mechanically and electrically couple the mounting device with the bus bar system. In addition to the fastening members, the mounting portion, adapter or mounting device may be provided with a securing mechanism that protects the mounting portion or adapter from unintended detachment from the bus bar system. Such a securing mechanism may include an arm that is hinged to the mounting portion and grips the bus bar system or touch protection device, if present. The arm should create additional self-enhancing clamping force when attempting to lift the mounting portion. But lifting only causes such self-enhancing clamping force if this would cause a rotational movement of the mounting portion about a pivot point located behind the front surface of the busbar or cover to which the arm is attached. The arm is then additionally pressed against the bus bar system instead of being released from the bus bar, and the mounting portion or adapter is additionally secured against lifting. However, in some cases it is not possible or desirable to place the pivot point of the latch arm behind the front surface of the busbar or cover, respectively, for example, because this space is used or should remain free for other elements. Disclosure of Invention Accordingly, it is desirable to provide a mounting portion, an adapter, and a mounting apparatus having a securing mechanism that alleviates this disadvantage. This object is solved by a mounting device having the features according to claim 1. Advantageous embodiments of the invention are defined in the dependent claims. Accordingly, there is provided a mounting portion of an electrical mounting apparatus, the mounting portion being attachable to at least one current bus bar, the mounting portion comprising: a hooking mechanism arranged on the mounting portion and adapted to hook onto at least one busbar, A securing mechanism, the securing mechanism comprising: A latch arm arranged on the mounting portion, the latch arm being adapted to grasp an attachment point, the attachment point being fixed relative to the at least one busbar, The latch arm is further adapted to engage with the attachment point when the mounting portion is attached to the at least one busbar, The latch arm comprises an arm portion defining a concave arc having a predefined radius, the arm portion being adapted to sit on a section of the mounting portion defining a convex arc having a predefined radius and having a center point located behind the attachment point when the mounting portion is attached to the at least one busbar. Advantageous embodiments may include the following features. When the mounting portion is attached to at least one busbar, the center point may be located above an uppermost busbar of the at least one busbar. The latch arm may be adapted to be permanently pressed in an upward direction to the attachment point. The arm portion may be adapted to be slidably seated on the section. When the mounting portion is attached to the at least one busbar, the attachment point may be located below a top edge of an uppermost busbar of the at least one busbar. The latch arm may have a saw tooth profile adapted to grasp the attachment point. When the mounting portion is attached to the at least one busbar, the attachment point may be a lower front edge of one of the at least one busbar, in particular a lower front edge of an uppermost busbar. Alternatively, the attachment point may be located at a touch protection cover that is mounted in front of at least one busbar. The securing mechanism may further comprise a spring member for generating a clamping force adapted to act on the latch arm to permanently press the latch arm against the attachment point when the mounting portion is attached to the at least one busbar. The section may be formed by a rib. Alternatively, the section may be formed from a plurality of ribs spaced apart from one another. The mounting portion may further comprise a section adapted to support the arm portion when the mounting portion i