Hook clamp locking arrangement for a busbar system, particularly for a fuse switch disconnector, and a hook clamp lock for a busbar system, particularly for a fuse switch disconnector

Abstract

The subject of the invention is a locking arrangement (5) for a hook clamp (4) for a busbar system, particularly for a fuse switch disconnector, comprising a complete fuse base (1) which comprises at least one fuse base (2) and at least one hook clamp (4) removably seated in the fuse base (2), which comprises at least one hook (4.1) and at least one hook holder (4.2) seated thereon, characterised in that the fuse base (2) comprises at least one wall (2.2) shaped inwards relative to at least one vertical wall (2.1) of the fuse base (2), while the at least one hook holder (4.2) comprises an upper wall (4.2.1), and a transverse recess (3) is located between the wall (2.2) of the fuse base (2) and the upper wall (4.2.1) of the hook holder (4.2), in which a lock (5) is removably and movably seated. The subject of the invention is also a lock (5) for a hook clamp (4) for a busbar system, characterised in that it has an external cross-sectional profile of the walls in the shape of a quadrilateral and comprises an upper wall (5.1) and a lower wall (5.2) positioned opposite thereto, a front wall (5.4) and a rear wall (5.5) positioned opposite thereto, and a first side wall (5.6) which comprises at least one stabilisation lug (5.7) positioned on its lower and / or upper edge, and a projection (5.3) is positioned on at least one external wall (5.7.1) of the stabilisation lug (5.7).

Description

[0001] Hook clamp locking arrangement for a busbar system, particularly for a fuse switch disconnector, and a hook clamp lock for a busbar system, particularly for a fuse switch disconnector

[0002] The subject of the invention is a hook clamp locking arrangement for a busbar system, particularly for a fuse switch disconnector, and a hook clamp lock for a busbar system, particularly for a fuse switch disconnector.

[0003] Fuse switch disconnectors are mounted to the busbar system by means of hook clamps seated in the base of the disconnector. Busbar systems to which fuse switch disconnectors are mounted typically feature two bar thicknesses: 5 mm and 10 mm. In the current state of the art, various solutions exist for adapting the hook clamp to different thicknesses of the busbar system rails. For example, German patent specification DE102009043174B4 discloses a solution in which a movable holder is located on the clamp. Adaptation of the hook clamp to the appropriate busbar thickness is achieved by changing the position of the movable holder. A solution is also known from European patent EP 2793332B1, in which a complete hook clamp assembly, comprising a hook and a pressure screw, is placed in a holder that moves across the disconnector, and the adjustment for bar thickness is implemented by rotating the pressure screw.

[0004] Solutions involving the simultaneous locking of several hooks in a fuse switch disconnector adapter are known in the state of the art. Conversely, the subject of Polish patent application P.448367 is a hook clamp mounting arrangement, particularly for a fuse switch disconnector adapter for a busbar system, comprising at least one hook clamp removably connected to the adapter, which comprises at least one hook and a hook holder, characterised in that the hook clamp holder comprises at least one wall terminating in at least one catch, the shape of which is matched to at least one first blocking wall in the adapter, and the hook holder comprises at least one beam matched to at least one blocking recess in the adapter.

[0005] The aim of the invention is to enable the positioning and locking of a hook clamp which fasten a fuse switch disconnector or a fuse base to a busbar system in cases where the design of the fuse switch disconnector or the fuse base provides no space for an adapter component. A further aim of the invention is to provide a solution that enables the positioning and locking of each hook clamp securing the fuse switch disconnector or the fuse base to the busbar system to be carried out individually.The subject of the invention is a hook clamp locking arrangement for a busbar system, particularly for a fuse switch disconnector, comprising a complete fuse base which comprises at least one fuse base positioned on the busbar system side and at least one hook clamp removably seated in the fuse base, which comprises at least one hook and at least one hook holder seated thereon, characterised in that the fuse base comprises at least one wall shaped inwards relative to at least one vertical wall of the fuse base, while the at least one hook holder comprises an upper wall, and a transverse recess is located between the wall of the fuse base and the upper wall of the hook holder, in which a lock is removably and movably seated. Due to the mobility of the lock, it is possible to place it in an open position (i.e. outside the transverse recess) - in which case it is possible to remove and change the position of the hook clamp. Conversely, in a closed position (i.e. when the lock is located in the transverse recess) - the hook clamp is locked (immobilised) in a specific position.

[0006] Advantageously, the wall of the fuse base is rectangular in shape and is positioned perpendicularly inwards relative to the vertical wall of the fuse base.

[0007] Advantageously, the lock comprises an upper wall and a lower wall, which are positioned such that in the closed state of the lock, i.e. when the lock is located in the transverse recess, the upper wall of the lock abuts the wall of the fuse base, while the lower wall of the lock abuts either the upper wall of the hook holder or the hook holder, depending on the position of the hook clamp. Due to the need to adapt the hook clamp to different thicknesses of the rail on the busbar system, the hook clamp is either in an extended position (in which case the lower wall of the lock abuts the upper wall of the hook holder) or a retracted position (in which case the lower wall of the lock abuts the hook holder).

[0008] Advantageously, the fuse base comprises at least one stabilisation recess located at the end of at least one transverse recess, and the stabilisation recess comprises an upper wall located behind the wall of the fuse base, preferably as an extension of the wall of the fuse base, and a lower wall located opposite the upper wall.

[0009] Advantageously, the stabilisation recess comprises at least one groove located on its upper wall and / or lower wall, and the lock comprises a first side wall which comprises at least one stabilisation lug comprising at least one external wall on which at least one projection is located, wherein the lock projection is located on the external wall of the at least one stabilisation lug of the lock in a position matched to the groove of the stabilisation recess, and the lock projection has a shape matched to the internal shape of the groove of the stabilisation recess and is removably and movably positioned in the groove of the stabilisation recess. Due to such a solution, the lock is movably located in the fuse base, allowing it to be tilted from the closed position to the open position and from the open position to the closed position without the need to remove the lock from the fuse base.

[0010] The subject of the invention is also a hook clamp lock for a busbar system, characterised in that its external cross-sectional profile of the walls is in the shape of a quadrilateral and it comprises an upper wall and a lower wall positioned oppositethereto, and a front wall and a rear wall positioned opposite thereto, and a first side wall which comprises at least one stabilisation lug positioned on its lower and / or upper edge, and a projection is positioned on at least one external wall of the stabilisation lug.

[0011] It is advantageous if the external cross-sectional profile of the walls of the lock is rectangular in shape, most preferably square, such that the upper wall and the lower wall are positioned parallel to each other and the front wall and the rear wall are positioned parallel to each other.

[0012] Advantageously, the first side wall has at least two stabilisation lugs, preferably positioned parallel to each other. This increases the stabilisation of the lock in the stabilisation recess.

[0013] Advantageously, the lock comprises a second side wall which comprises a protrusion, preferably positioned coplanar with the front wall. Due to the protrusion, the lock can be easily released manually by prying it using the protrusion.

[0014] Advantageously, at least one hole, preferably a through-hole, is provided in the front wall, which preferably has a rectangular cross-section or a rectangular cross-section with rounded corners.

[0015] Advantageously, the projection has a circular cross-section.

[0016] Advantageously, a recess, preferably in the shape of a rectangular parallelepiped, is provided in the upper wall.

[0017] An advantageous effect of the presented solution is the possibility of stable positioning of the hook clamp in various positions in a fuse switch disconnector or fuse base design where there is no space for an adapter component. Furthermore, the invention enhances the functionality of the fuse switch disconnector or the fuse base by allowing for the individual adjustment of each hook clamp separately, which simultaneously enables the individual (separate) replacement of the hook clamp.

[0018] The subject of the invention in an embodiment is shown in the drawing, in which:

[0019] Fig. 1 shows a fuse switch disconnector in a perspective view from below with the locking arrangement open

[0020] Fig. 2 shows a fuse switch disconnector in a perspective view from below with the locking arrangement closed

[0021] Fig. 3 shows a fuse switch disconnector in a perspective view from above with the locking arrangement open

[0022] Fig. 4 shows a fuse switch disconnector in a perspective view from below without the lock

[0023] Fig. 4.1. shows an enlarged perspective view of detail A marked in Fig. 4, showing the stabilisation recess

[0024] Fig. 5 shows a fuse switch disconnector in a perspective view from above without the lock

[0025] Fig. 5.1. shows an enlarged perspective view of detail B marked in Fig. 5, showing the stabilisation recessFig. 6 shows a hook clamp in a perspective view from above

[0026] Fig. 7 shows the lock in a perspective view from above

[0027] Fig. 8 shows the lock in a perspective view from below

[0028] E m b o d i m e n t s

[0029] Example I

[0030] The complete fuse base 1 of the fuse switch disconnector comprises one fuse base 2 positioned on the busbar system side, which comprises three vertical walls 2.1 and three walls 2.2 positioned perpendicularly inwards relative to the vertical walls 2.1 of the fuse base 2. Three hook clamps 4 for a busbar system are removably seated in three recesses in the fuse base 2, with one hook clamp 4 in each recess respectively. The recesses in the fuse base 2 for the hook clamps 4 have a shape corresponding to the hook clamps 4. Each of the three hook clamps 4 comprises two hooks 4.1 with one hook holder 4.2 seated thereon. In each hook clamp 4, the hook holder 4.2 forms a connector between the two hooks 4.1. Each hook holder 4.2 has a horizontal upper wall 4.2.1 at the top. The walls 2.2 of the fuse base 2 and the upper walls 4.2.1 of the hook holders 4.2 are positioned opposite each other in the fuse base 2 such that transverse recesses 3 are located between them. A lock 5 is movably seated in each transverse recess 3, meaning that in this embodiment, three locks 5 are seated. Each of the three locks 5 has an external cross-sectional profile of the walls in the shape of a rectangle, the longer sides of which are formed by the upper wall 5.1 and the lower wall 5.2 positioned parallel thereto, while the shorter sides are formed by the front wall 5.4 and the rear wall 5.5 positioned parallel thereto. Each of the three locks 5 is movably seated such that in the closed state, the lock 5 is located inside the transverse recess 3, locking (preventing) the removal of the hook clamp 4. Releasing the lock 5 and placing it in the open state is achieved by sliding the lock 5 out of the transverse recess 3, thereby enabling the removal of the hook clamp 4 and the setting of its alternative position on the busbar system. In the closed state of the lock 5, the upper wall 5.1 of the lock 5 abuts the wall 2.2 of the fuse base 2, while the lower wall 5.2 of the lock 5 abuts either the upper wall 4.2.1 of the hook holder 4.2 (when the hook clamp is in the extended position) or the hook holder 4.2 (when the hook clamp is in the retracted position). The position of the hook clamp 4 (extended or retracted) depends on the thickness of the busbar system rail on which it is located. Each of the three locks also comprises a first side wall

[0031] 5.6. located on the left side as in the perspective view from below (Fig. 8), and each first side wall 5.6 has two stabilisation lugs 5.7 positioned on the upper and lower edges of the first side wall 5.6, parallel to each other. Each stabilisation lug 5.7 has an external wall 5.7.1 on which the projections 5.3 are located. On the left sides of each transverse recess 3 as in the perspective view from below (Fig. 4), the fuse base 2 has one stabilisation recess 6 as in the perspective view from below (Fig.

[0032] 4.1); thus, in the embodiment, the fuse base 2 has three stabilisation recesses 6 located at the ends of the transverse recesses 3. Each stabilisation recess 6 comprises an upper wall 6.1 positioned behind the wall 2.2 of the fuse base 2 and ina plane parallel to the wall 2.2 of the fuse base 2, forming a horizontal extension of the wall 2.2 of the fuse base 2. Each stabilisation recess 6 also has a lower wall 6.2 positioned parallel to the upper wall 6.1. One groove 6.3 is located in the upper wall 6.1 of each stabilisation recess 6 and in the lower wall 6.2 of each stabilisation recess 6. Each projection 5.3 of each lock 5 is situated in a position corresponding to the groove 6.3 of the stabilisation recess 6. Each groove

[0033] 6.3 in the stabilisation recess 6 has a shape matched to each projection 5.3 of the lock 5. The projections 5.3 of the lock 5 are removably and movably positioned in the grooves 6.3 of the stabilisation recesses 6. Due to such a solution, the lock 5 is movably located in the fuse base 2, allowing for the tilting of the lock 5 from the closed position to the open position and from the open position to the closed position without the need to remove the lock 5 from the fuse base 2. This solution enables the position of each of the three hook clamps 4 to be changed individually, with minimal effort and without the need to remove the lock 5 from the fuse base 2.

[0034] Example II

[0035] A hook clamp locking arrangement for a busbar system was produced with a design analogous to that in Example I, except that the walls 2.2 of the fuse base 2 are rectangular in shape and are positioned inwards of the fuse base 2 at an angle of 45 degrees relative to the vertical wall 2.1. Simultaneously, the locks 5 have a trapezium shape in the external cross-sectional profile of the walls, where the upper wall 5.1. forms its obtuse leg at an angle of 135 degrees relative to the base constituting the rear wall 5.5 of the lock 5.

[0036] Example III

[0037] A hook clamp locking arrangement for a busbar system was produced with a design analogous to that in Example I, except that the fuse base 2 comprises one removably seated hook clamp 4, which comprises one hook 4.1 and one hook holder 4.2 seated thereon. The fuse base 2 comprises one wall

[0038] 2.2 shaped at a right angle inwards relative to the vertical wall 2.1. One hook holder 4.2 comprises an upper wall 4.2.1, and one transverse recess 3 is located between it and the wall 2.2, in which a lock 5 is movably seated. In this embodiment, a stabilisation recess 6 is not present, therefore, in order to remove the hook clamp 4 and change its position on the busbar system, the lock 5 is manually pried and removed from the fuse base 2.

[0039] Example IV

[0040] A hook clamp lock 5 for a busbar system was produced as described in Example I.

[0041] Example V

[0042] A hook clamp lock 5 for a busbar system was produced as described in Example I,wherein the external cross-sectional profile of the walls of the lock 5 is square, while the first side wall 5.6 has one stabilisation lug 5.7 positioned on its upper edge.

[0043] Example VI

[0044] A hook clamp lock 5 for a busbar system was produced as described in Example V, wherein one stabilisation lug 5.7 is positioned on the lower edge of the first side wall 5.6, while the lock projection 5.3 has a circular cross-section.

[0045] Example VII

[0046] A hook clamp lock 5 for a busbar system was produced as described in Example I, wherein the lock 5 comprises a second side wall 5.8 positioned parallel to the first side wall 5.6. The second side wall 5.8 comprises a protrusion 5.9 positioned coplanar with the front wall 5.4. Due to this solution, the lock 5 can be easily pried manually and its position changed from closed to open and vice versa without the use of additional tools.

[0047] Example VIII

[0048] A hook clamp lock 5 for a busbar system was produced as described in Example I, wherein a single through-hole 5.10, having a rectangular cross-section with rounded corners,

[0049] is provided in the front wall 5.4 of the lock 5.

[0050] Example IX

[0051] A hook clamp lock 5 for a busbar system was produced as described in Example VIII, wherein the hole 5.10 is not a through-hole and has a rectangular cross-section. In turn, a recess in the shape of a rectangular parallelepiped is located on the upper wall 5.1.

[0052] The presented embodiments of the invention are for illustrative purposes only and in no way limit the claimed invention.

[0053] List of Reference Signs

[0054] 1. Complete fuse base

[0055] 2. Fuse base

[0056] 2.1. Vertical wall (of the fuse base)

[0057] 2.2. Wall (of the fuse base)

[0058] 3. Transverse recess

[0059] 4. Hook clamp

Claims

AMENDED CLAIMSreceived by the International Bureau on 28 July 2026 (28.07.2026)Patent claims1. A locking arrangement (5) for a hook clamp (4) for a busbar system, particularly for a fuse switch disconnector, comprising a complete fuse base (1) which comprises at least one fuse base (2) and at least one hook clamp (4) removably seated in the fuse base (2), which comprises at least one hook (4.1) and at least one hook holder (4.2) seated thereon, characterised in that the fuse base (2) comprises at least one wall (2.2) shaped inwards relative to at least one vertical wall (2.1) of the fuse base (2), while the at least one hook holder (4.2) comprises an upper wall (4.2.1), and a transverse recess (3) is located between the wall (2.2) of the fuse base (2) and the upper wall (4.2.1) of the hook holder (4.2), in which a lock (5) is removably and movably seated.

2. The locking arrangement according to claim 1, characterised in that the wall (2.2) of the fuse base (2) is rectangular in shape and is positioned perpendicularly inwards relative to the vertical wall (2.1) of the fuse base (2).

3. The locking arrangement according to claim 1 or 2, characterised in that the lock (5) comprises an upper wall (5.1) and a lower wall (5.2) positioned such that in the closed state of the lock (5), when the lock (5) is located in the transverse recess (3), the upper wall (5.1) of the lock (5) abuts the wall (2.2) of the fuse base (2), while the lower wall (5.2) of the lock (5) abuts either the upper wall (4.2.1) of the hook holder (4.2) or the hook holder (4.2), depending on the position of the hook clamp (4).

4. The locking arrangement according to claim 1 or 2 or 3, characterised in that the fuse base (2) comprises at least one stabilisation recess (6) located at the end of at least one transverse recess (3), and the stabilisation recess (6) comprises an upper wall (6.1) positioned behind the wall (2.2) of the fuse base (2), preferably as an extension of the wall (2.2) of the fuse base (2), and a lower wall (6.2) positioned opposite the upper wall (6.1).

5. The locking arrangement according to claim 1 or 2 or 3 or 4, characterised in that the stabilisation recess (6) comprises at least one groove (6.3) located on its upper wall (6.1) and / or lower wall (6.2), and the lock (5) comprises a first side wall (5.6) which comprises at least one stabilisation lug (5.7) comprising at least one external wall (5.7.1) on which at least one projection (5.3) is located, wherein the projection (5.3) of the lock (5) is located on the external wall (5.7.1) of at least one stabilisation lug (5.7) of the lock (5) in a position matched to the groove (6.3) of the stabilisation recess (6), and the projection (5.3) of the lock (5) has a shape matched to the internal shape of the groove (6.3) of the stabilisation recess (6) and is removably and movably positioned in the groove (6.3) of the stabilisation recess (6).

6. A lock (5) for a hook clamp (4) for a busbar system, particularly for a fuse switch disconnector, characterised in that it is removably and movably seated in transverse recess (3) of the locking arrangement according to claims 1 or 2 or 3 or 4 or 5, and it has an external cross-sectional profile of the walls in the shape of a quadrilateral and comprises an upper wall (5.1) and a lower wall (5.2) positioned opposite thereto, as well as a front wall (5.4) and a rear wall (5.5) positioned opposite thereto, and a first side wall (5.6) which comprises at least one stabilisation lug (5.7) positioned on its lower and / orupper edge, and a projection (5.3) is positioned on at least one external wall (5.7.1) of the stabilisation lug (5.7).

7. The lock according to claim 6, characterised in that the external cross-sectional profileof the walls of the lock (5) is rectangular in shape, preferably square, such that the upper wall (5.1) and the lower wall (5.2) are positioned parallel to each other and the front wall (5.4) and the rear wall (5.5) are positioned parallel to each other.

8. The lock according to claim 6 or 7, characterised in that the first side wall (5.6) has at least two stabilisation lugs (5.7), preferably positioned parallel to each other.

9. The lock according to claim 6 or 7 or 8, characterised in that it comprises a secondside wall (5.8) which comprises a protrusion (5.9), preferably positioned coplanar with the front wall (5.4).

10. The lock according to claim 6 or 7 or 8 or 9, characterised in that at least one hole (5.10), preferably a through-hole, is provided in the front wall (5.4), which preferably has a rectangular cross-section or a rectangular cross-section with rounded corners.

11. The lock according to claim 6 or 7 or 8 or 9 or 10, characterised in that the projection (5.3) has a circular cross-section.

12. The lock according to claim 6 or 7 or 8, or 9 or 10 or 11, characterised in that a recess, preferably in the shape of a rectangular parallelepiped, is provided in the upper wall (5.1).The amendment in Claim 6 is done to remedy ISA indication, that the unity of invention is lacking, as there are no special technical features common to claim 1 and claim 6. In particular, it was pointed that the locking system defined in claims 6-12 may be used both in the solution according to claim 1 and other fuse switch disconnector arrangements known from the prior art. ISA suggested to amend independent patent claims in order to clearly define the technical feature and the technical and functional linkage between independent claims 1 and 6.Claim 6 has been amended at lines 2 and 3. After amendment it indicates that a lock (5) for a hook clamp (4) for a busbar system, particularly for a fuse switch disconnector „is removably and movably seated in transverse recess (3) of the locking arrangement according to claims 1 or 2 or 3 or 4 or 5”.The amended Claim 6 remedy objection raised by ISA:a) it relates precisely only to solution according to claims 1-5, and not to other fuse switch disconnector arrangements known from the prior art,b) the lock is removably and movably seated in transverse recess of the locking arrangement according to claims 1-5, which means that solutions in claim 1 and claim 6 are technically connected and relate to a single inventive concept.<IMG file=null he=null id=imgf000012_0001 img-content=null img-format=null inline=null orientation=null wi=null>Katarzyna Krupa-Lipińska representative

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