阅读说明：本技术 交叉式接引线夹 (Cross lead connecting clamp ) 是由 吴少雷 冯玉 吴凯 骆晨 李君� 李炳侠 冯乔 王志强 韩文涛 何文信 王伟 于 2021-08-09 设计创作，主要内容包括：本发明涉及一种交叉式接引线夹,包括楔形夹紧块,所述楔形夹紧块设置在夹紧轨道上,所述夹紧轨道旁侧设置有第一、第二卡槽,所述第一、第二卡槽分别构成夹持线束的夹持通道,所述楔形夹紧块沿着夹紧轨道滑动且使得第一、第二卡槽的槽口靠近,所述第一、第二卡槽的槽长方向交叉布置,该线夹在实施接线操作也更为便捷,实现在安装和长时间的使用过程中,获得高可靠性的长寿命,为适应现代电动工具的安装模式,提供方便夹持与定位结构,实现主、副线独立夹紧,简化工具的设计与操作的强度,通过自适应的弹性变形,实现微动条件下螺栓自锁；相对高的载流量和用较少的型号对不同线径实现更高的适应性。(The invention relates to a crossed lead connecting clamp, which comprises a wedge-shaped clamping block, wherein the wedge-shaped clamping block is arranged on a clamping track, a first clamping groove and a second clamping groove are arranged beside the clamping track, the first clamping groove and the second clamping groove respectively form a clamping channel for clamping a wire harness, the wedge-shaped clamping block slides along the clamping track and enables the notches of the first clamping groove and the second clamping groove to be close to each other, the groove lengths of the first clamping groove and the second clamping groove are arranged in a crossed manner, the wire connecting clamp is more convenient and fast in implementation of wire connecting operation, high-reliability long service life is achieved in the installation and long-time use processes, a convenient clamping and positioning structure is provided for adapting to the installation mode of a modern electric tool, independent clamping of a main wire and a secondary wire is achieved, the design and the operation strength of the tool are simplified, and self-locking of a bolt under a micro-motion condition is achieved through self-adaptive elastic deformation; the relatively high ampacity and the higher adaptability to different wire diameters with fewer models.)

1. Crossing splicing cable clamp, its characterized in that: including wedge clamping block (100), wedge clamping block (100) set up on pressing from both sides tight track (200), it is provided with first, second draw-in groove (300, 400) to press from both sides tight track (200) side, first, second draw-in groove (300, 400) constitute the centre gripping passageway of centre gripping pencil respectively, wedge clamping block (100) slide and make the notch of first, second draw-in groove (300, 400) be close to along pressing from both sides tight track (200), the groove length direction cross arrangement of first, second draw-in groove (300, 400).

2. The cross-connect clamp of claim 1, wherein: the clamping rail (200) is integrally in a clamping groove plate-shaped structure, wherein the first clamping groove (300) is formed in the groove wall position of one side of the clamping rail (200), and the straight side of the wedge-shaped clamping block (100) is in sliding fit with the groove wall of the other side of the clamping rail (200).

3. The cross-connect clamp of claim 2, wherein: the hypotenuse side of wedge clamp (100) is arranged with first draw-in groove (300) relatively, and the hypotenuse side of wedge clamp (100) be provided with first draw-in groove (300) complex centre gripping mouth (110), centre gripping mouth (110) run through along the length direction of wedge clamp (100) and arrange, constitute the passageway of centre gripping pencil between centre gripping mouth (110) and first draw-in groove (300).

4. The cross-under clamp of claim 3, wherein: the one end of pressing from both sides tight track (200) is extended and is provided with centre gripping subplate (410), it is provided with splint (420) still to slide on the tight track (200) of clamp, be provided with locking bolt (210) between tight piece (100) of wedge clamp and splint (420), locking bolt (210) are arranged along the length direction of wedge clamp piece (100), locking bolt (210) and wedge clamp piece (100) with constitute normal running fit, the cooperation of the screw hole on wedge clamp piece (100) and splint (420), the passageway constitutes second draw-in groove (400) of centre gripping pencil between centre gripping subplate (410) and splint (420).

5. The cross-under clamp of claim 4, wherein: the contact of surface and face is appeared between splint (420) and the tight track (200) of clamp and is leaned on, the bar hole (411) has been seted up on centre gripping accessory plate (410), bar hole (411) are arranged along the groove width of the tight track (200) of clamp, locking bolt (210) pass bar hole (411).

6. The cross-connect clamp of claim 1, wherein: it is whole that clamping track (200) is draw-in groove platelike structure to press from both sides, and wherein first draw-in groove (300) set up in one side cell wall position of clamping track (200), the avris of wedge clamp piece (100) constitutes sliding fit with clamping track (200) opposite side cell wall, be provided with vice wedge clamp piece (500) on clamping track (200), vice wedge clamp piece (500) constitute second draw-in groove (400) that sliding fit just constituted the centre gripping pencil between with clamping track (200), vice wedge clamp piece (500) are perpendicular with the moving direction of wedge clamp piece (100).

7. The cross-connect clamp of claim 6, wherein: the hypotenuse side of wedge clamp (100) is arranged with first draw-in groove (300) relatively, and the hypotenuse side of wedge clamp (100) be provided with first draw-in groove (300) complex first centre gripping passageway (120), first centre gripping passageway (120) run through along the length direction of wedge clamp (100) and arrange, constitute the passageway of centre gripping pencil between first centre gripping passageway (120) and first draw-in groove (300).

8. The cross-under clamp of claim 7, wherein: the straight side of the auxiliary wedge-shaped clamping block (500) is matched with an auxiliary clamping track (220) which is convexly extended from the clamping track (200), and the oblique side of the auxiliary wedge-shaped clamping block (500) and a clamping groove which is convexly extended from the clamping track (200) form a second clamping groove (400) for clamping a wiring harness.

9. The cross-connect clamp of claim 8, wherein: the wedge presss from both sides tight piece (100) up-rotating type and is provided with first clamping screw (610), the parallel and one end of length direction of first clamping screw (610) and wedge clamp piece (100) cooperates with the screw hole on pressing from both sides tight track (200), the rotation type is provided with second clamping screw (620) on vice wedge clamp piece (500), the parallel and one end of length direction and the screw hole cooperation on wedge clamp piece (100) of second clamping screw (620) and vice wedge clamp piece (500).

10. The cross-connect clamp of claim 1, wherein: the clamping rail (200) is integrally of a folded plate-shaped structure, the wedge-shaped clamping block (100) is arranged in a clamping groove of the clamping rail (200) in a sliding mode, a first clamping groove (300) for clamping a wire harness is formed by the oblique side of the wedge-shaped clamping block (100) and the corner position of the clamping rail (200), a sliding clamping plate (700) is arranged on the straight side of the wedge-shaped clamping block (100), a clamping hook (230) extends from the clamping rail (200), a second clamping groove (400) for clamping the wire harness is formed between the sliding clamping plate (700) and the clamping hook (230), and the length direction of the clamping hook (230) and the length direction of the first clamping groove (300) are arranged in a crossed mode; sliding clamp plate (700) support and lean on the both sides open position that presss from both sides tight track (200), be provided with screw rod (800) on wedge clamp piece (100), screw rod (800) and wedge clamp piece (100) normal running fit and one end are connected with the screw hole on sliding clamp plate (700), the length direction parallel arrangement of screw rod (800) and wedge clamp piece (100).

Technical Field

The invention relates to the technical field of power wire clamps, in particular to a crossed lead connecting clamp.

Background

With the development of modern society, the requirement of users on the reliability of power supply is higher and higher. The power distribution network is responsible for the tasks of supplying and distributing electric energy to various users on site or step by step, and is the most direct and key link for ensuring the power supply quality. To meet the requirements of mechanical and electrical performance, various types of electrical connectors are being developed, and the connecting wire clamp is one of the electrical connectors that is widely used. The connection wire clamp is used as a hot technology for distribution network line drainage operation, and has succeeded to a certain extent in practical application, however, in recent years, under the dual functions of city development and economic construction, the electricity consumption of life and engineering is greatly increased, and the reliability of the connection wire clamp is seriously challenged. The main failure mode of the connecting wire clamp is electric contact failure which is mainly represented by the sharp rise of contact resistance, and the load causes serious heating and even burning. According to related survey data, the 10kV distribution line fault rate accounts for about 70% of the whole network fault rate, and in the 10kV distribution line fault, the fault rate of the connecting wire clamp accounts for the highest rate, so that serious economic loss and personal safety are caused. In recent years, with the increase of electricity consumption, the load of a circuit is increased, T contacts are increased, the connecting wire clamp is overheated, and serious potential safety hazards exist. In addition, the environmental pollution is serious, the climate change is not constant, the air contains more dust particles, organic pollutants and the like, the connecting wire clamp is generally exposed, the dust particles and the like can cause the problems of contact resistance increase, fretting wear, vibration fatigue and the like of an electric contact interface, and the normal service performance of the connecting wire clamp is seriously influenced. Based on this, the high reliability, the long-life fastener that continues is undoubtedly the important guarantee of modernized high-efficient transmission of electricity.

The application of connecting wire clamps in 10kV distribution lines is more, such as C-shaped wire clamps, puncture wire clamps, parallel groove wire clamps and the like (shown in figure 2). The working purpose of the connecting wire clamp is to complete the connecting work of the drainage wire of the main overhead transmission line in the uninterrupted operation, compared with the traditional line connecting technology, the connecting wire clamp has the advantage of being more matched with the line power supply form, and meanwhile, the uninterrupted operation mode of the connecting wire clamp creates huge economic benefits for power supply enterprises. The parallel groove clamp is good in overcurrent capacity and is welcomed in the early stage, the parallel groove clamp is mounted by tightening a screw, and the screw is easily loosened due to the influence of environment and current to cause poor line contact. Use this product to need often to maintain, cause cost of maintenance huge, this fastener needs to realize insulating through the winding of insulating tape equally, has foreign object potential safety hazard of electrocuting. In recent years, the puncture wire clamp introduced abroad is simple in construction operation, can be directly installed without peeling, but is easy to cause conductor puncture due to too deep puncture or incomplete puncture, and the adopted needle point type contact has small contact surface and weak overcurrent capacity, so that a plurality of potential safety hazards still exist in practical use. So far, the connection mode of the C-shaped wire clamp which is generally accepted has reasonable design and strong overcurrent capacity, and can self-lock under an ideal state. However, in the actual use process, due to the fact that the size of the wire clamp and the outer diameter of the wire are deviated, when the outer diameter of the conductor of the wire is small, a certain gap is formed between the wire clamp and the wire, and poor contact is caused. When the outer diameter of the conductor of the wire is larger, the wire clamp and the wire cannot be flattened and self-locking cannot be realized. Furthermore, the C-shaped clamps have more than forty types and specifications, which causes difficulty in first-aid repair and large spare parts. In addition, all the existing connecting wire clamps are products in the manual operation era, the design of the wire clamps is fundamentally simplified by the flexibility of people, and the wire clamps are not suitable for the development trend of performing live installation operation by using an automatic tool in modern times.

Disclosure of Invention

The purpose of the invention is: the cross-type lead connecting clamp can conveniently realize cross-type power connection between a main line and a branch line, realize self-locking under the condition that the clamp is damaged, and can adapt to the wiring operation of various types of main lines and branch lines in a line system.

In order to achieve the purpose, the invention adopts the technical scheme that:

crossing lead connecting clamp, including the tight piece of wedge clamp, the tight piece setting of wedge clamp is on pressing from both sides tight track, it is provided with first, second draw-in groove to press from both sides tight track side, first, second draw-in groove constitute the centre gripping passageway of centre gripping pencil respectively, the tight piece of wedge clamp slides and makes the notch of first, second draw-in groove be close to along pressing from both sides tight track, the groove length direction cross arrangement of first, second draw-in groove.

The invention also has the following features:

the whole clamping rail is of a clamping groove plate-shaped structure, wherein the first clamping groove is formed in the groove wall position of one side of the clamping rail, and the straight side of the wedge-shaped clamping block is in sliding fit with the groove wall of the other side of the clamping rail.

The hypotenuse side of wedge clamp splice is arranged with first draw-in groove relatively, and the hypotenuse side of wedge clamp splice be provided with first draw-in groove complex centre gripping mouth, the centre gripping mouth runs through along the length direction of wedge clamp splice and arranges, constitute the passageway of centre gripping pencil between centre gripping mouth and the first draw-in groove.

The utility model discloses a clamping device, including clamping block, wedge, locking bolt, clamping vice board, clamping block, clamping vice board, the one end that presss from both sides the tight track extends and is provided with the centre gripping subplate, it is provided with splint still to slide on the tight track of clamp, be provided with the locking bolt between wedge clamping block and the splint, the locking bolt is arranged along the length direction that the wedge pressed from both sides the tight block, locking bolt and wedge press from both sides tight block and constitute normal running fit, the wedge presss from both sides the tight block and cooperates with the screw hole on the splint, the passageway constitutes the second draw-in groove of centre gripping pencil between centre gripping subplate and the splint.

The contact of surface and face is presented between splint and the tight track of clamp and is leaned on, the bar hole has been seted up on the centre gripping subplate, the bar hole is arranged along the groove width that presss from both sides tight track, the locking bolt passes the bar hole.

The clamping rail is integrally in a clamping groove plate-shaped structure, a first clamping groove is formed in the groove wall position of one side of the clamping rail, the straight side of the wedge-shaped clamping block and the groove wall of the other side of the clamping rail form sliding fit, an auxiliary wedge-shaped clamping block is arranged on the clamping rail, the auxiliary wedge-shaped clamping block and the clamping rail form sliding fit, a second clamping groove for clamping a wire harness is formed between the auxiliary wedge-shaped clamping block and the clamping rail, and the auxiliary wedge-shaped clamping block is perpendicular to the moving direction of the wedge-shaped clamping block.

The hypotenuse side of wedge clamp splice is arranged with first draw-in groove relatively, and the hypotenuse side of wedge clamp splice be provided with the first centre gripping passageway of first draw-in groove complex, first centre gripping passageway runs through along the length direction of wedge clamp splice and arranges, constitute the passageway of centre gripping pencil between first centre gripping passageway and the first draw-in groove.

The straight edge side of the auxiliary wedge-shaped clamping block is matched with the auxiliary clamping rail which is convexly arranged on the clamping rail, and the oblique edge side of the auxiliary wedge-shaped clamping block and the clamping groove which is convexly arranged on the clamping rail form a second clamping groove for clamping the wiring harness.

The wedge-shaped clamping block is rotatably provided with a first clamping screw, the first clamping screw is parallel to the length direction of the wedge-shaped clamping block, one end of the first clamping screw is matched with a threaded hole in a clamping track, the auxiliary wedge-shaped clamping block is rotatably provided with a second clamping screw, and the second clamping screw is parallel to the length direction of the auxiliary wedge-shaped clamping block and one end of the second clamping screw is matched with the threaded hole in the wedge-shaped clamping block.

The whole folded plate form structure that is of tight track of clamp, wedge clamping block slides and sets up in pressing from both sides tight orbital draw-in groove, the oblique avris that the wedge pressed from both sides tight piece and the first draw-in groove that presss from both sides tight orbital turning position constitution centre gripping pencil, the straight flange side that the wedge pressed from both sides tight piece is provided with the slip splint, it is provided with the trip to extend on the tight track of clamp, constitute the second draw-in groove of centre gripping pencil between slip splint and the trip, the length direction and the first draw-in groove length direction cross arrangement of trip.

The sliding clamping plate is abutted against the opening positions on the two sides of the clamping track, the wedge-shaped clamping block is provided with a screw rod, the screw rod is in running fit with the wedge-shaped clamping block, one end of the screw rod is connected with a threaded hole in the sliding clamping plate, and the screw rod and the wedge-shaped clamping block are arranged in parallel in the length direction.

Compared with the prior art, the invention has the beneficial effects that: when the wire harness is clamped, the wedge-shaped clamping block is used for adjusting the clamping channel, so that the clamping operation of the wire harness is realized, and therefore, when the wire clamp is used for clamping the wire harness, the clamping operation can be finished only by adjusting the wedge-shaped clamping block, the wire clamp can realize self-locking of the wire harness and can be adapted to the wiring operation of branch lines and main lines of various types, the wiring operation is more convenient, the high-reliability long service life is obtained in the installation and long-time use processes, a convenient clamping and positioning structure is provided for adapting to the installation mode of modern electric tools, the main line and the auxiliary line are independently clamped, the design and operation strength of the tools is simplified, and the self-locking of bolts under the micro-motion condition is realized through self-adaptive elastic deformation; the relatively high ampacity and the higher adaptability to different wire diameters with fewer models.

Drawings

FIGS. 1 and 2 are schematic views of a first embodiment of a cable clamp from two different perspectives;

FIGS. 3 and 4 are schematic views of the first embodiment of the wire clamp showing two different views of the slot and the clamping rail;

FIG. 5 and FIG. 6 are schematic views of a second embodiment of a cable clamp;

FIG. 7 is a schematic structural view of a wedge-shaped clamping block in a second embodiment of the contact wire clamp;

FIGS. 8 and 9 are schematic views of a third embodiment of a cable clamp from two different perspectives;

fig. 10 is a schematic view of a separate clamping rail configuration of a third embodiment of the wire clamp.

Detailed Description

The invention will be further explained with reference to fig. 1 to 10:

crossing lead connecting clamp, including wedge clamping block 100, wedge clamping block 100 sets up on pressing from both sides tight track 200, it is provided with first, second draw-in groove 300, 400 to press from both sides tight track 200 side, first, second draw-in groove 300, 400 constitute the centre gripping passageway of centre gripping pencil respectively, wedge clamping block 100 slides and makes first, second draw-in groove 300, 400's notch be close to along pressing from both sides tight track 200, the groove length direction cross arrangement of first, second draw-in groove 300, 400.

When the wire harness is clamped, the clamping channel is adjusted through the wedge-shaped clamping block 100, so that the clamping operation of the wire harness is realized, when the wire harness is clamped, the wire clamp can be completed only by adjusting the wedge-shaped clamping block 100, the wire clamp can realize the self-locking of the wire harness, can be adapted to the wiring operation of branch lines and main lines of various types, and is more convenient and faster to implement the wiring operation, the groove length directions of the first clamping groove 300 and the second clamping groove 400 are crosswise arranged, so that the main line and the branch lines can be in cross connection, the wire breaking caused by wind power is avoided, the high-reliability long service life is obtained in the installation and long-time use processes, a convenient clamping and positioning structure is provided for adapting to the installation mode of modern electric tools, the independent clamping of the main line and the auxiliary line is realized, the design and the operation strength of the tools are simplified, and the self-adaptive elastic deformation is realized, self-locking of the bolt under the micro-motion condition is realized; the relatively high ampacity and the higher adaptability to different wire diameters with fewer models.

As a first embodiment of the present invention, referring to fig. 1 to 4, the clamping rail 200 is integrally formed in a slot plate shape, wherein the first slot 300 is disposed at a slot wall position on one side of the clamping rail 200, and a straight side of the wedge-shaped clamping block 100 is slidably engaged with a slot wall on the other side of the clamping rail 200.

When the wiring connection operation is carried out, the wiring harness is clamped in the first clamping groove 300, and the other wiring harness is clamped in the second clamping groove 400, and the clamping of the wiring harness is realized by adjusting the wedge-shaped clamping block 100.

Preferably, the oblique side of the wedge-shaped clamping block 100 is arranged opposite to the first clamping groove 300, the oblique side of the wedge-shaped clamping block 100 is provided with a clamping opening 110 matched with the first clamping groove 300, the clamping opening 110 penetrates along the length direction of the wedge-shaped clamping block 100, and a channel for clamping a wire harness is formed between the clamping opening 110 and the first clamping groove 300.

More preferably, the one end of pressing from both sides tight track 200 extends and is provided with centre gripping subplate 410, it is provided with splint 420 still to slide on the tight track 200 to press from both sides, be provided with locking bolt 210 between wedge clamping block 100 and splint 420, locking bolt 210 arranges along the length direction of wedge clamping block 100, locking bolt 210 and wedge clamping block 100 with constitute normal running fit, the screw hole cooperation on wedge clamping block 100 and the splint 420, the passageway constitutes the second draw-in groove 400 of centre gripping pencil between centre gripping subplate 410 and the splint 420.

Specifically, the surface-to-surface contact between the clamping plate 420 and the clamping rail 200 is abutted, a strip-shaped hole 411 is formed in the clamping auxiliary plate 410, the strip-shaped hole 411 is arranged along the groove width of the clamping rail 200, and the locking bolt 210 penetrates through the strip-shaped hole 411.

After the upper main line and the branch line are respectively clamped in the first clamping groove 300 and the second clamping groove 400, the clamping plate 420 and the clamping rail 200 are in surface-to-surface contact and abut against by rotating the locking bolt 210, so that the clamping plate 420 slides along the clamping rail 200, consciousness realizes sliding of the wedge-shaped clamping block 100 along the clamping rail 200, and accordingly changes of the first clamping groove 300 and the second clamping groove 400 are realized, and clamping operation of the main line and the branch line is realized.

As a second embodiment of the present invention, referring to fig. 5 to 7, the clamping rail 200 is configured as a clamping groove plate as a whole, wherein a first clamping groove 300 is disposed at a groove wall position on one side of the clamping rail 200, a straight side of the wedge-shaped clamping block 100 is in sliding fit with a groove wall on the other side of the clamping rail 200, a secondary wedge-shaped clamping block 500 is disposed on the clamping rail 200, the secondary wedge-shaped clamping block 500 is in sliding fit with the clamping rail 200 and forms a second clamping groove 400 for clamping a wire harness therebetween, and the secondary wedge-shaped clamping block 500 is perpendicular to a moving direction of the wedge-shaped clamping block 100.

The main line and the branch line are respectively clamped in the first clamping groove 300 and the second clamping groove 400, and the groove widths of the first clamping groove 300 and the second clamping groove 400 are changed by adjusting the wedge-shaped clamping block 100 and enabling the auxiliary wedge-shaped clamping block 500 to clamp the main line and the branch line, so that the main line and the branch line are locked, and the power connection operation is completed.

Preferably, the oblique side of the wedge-shaped clamping block 100 is arranged opposite to the first clamping groove 300, and the oblique side of the wedge-shaped clamping block 100 is provided with a first clamping channel 120 matched with the first clamping groove 300, the first clamping channel 120 penetrates along the length direction of the wedge-shaped clamping block 100, and a channel for clamping a wire harness is formed between the first clamping channel 120 and the first clamping groove 300.

Preferably, the straight side of the sub wedge-shaped clamping block 500 is matched with the sub clamping rail 220 protruding from the clamping rail 200, and the oblique side of the sub wedge-shaped clamping block 500 and the clamping groove protruding from the clamping rail 200 form a second clamping groove 400 for clamping the wiring harness.

When the wedge-shaped clamping block 100 and the auxiliary wedge-shaped clamping block 500 are locked, the wedge-shaped clamping block 100 is rotatably provided with a first clamping screw 610, the first clamping screw 610 is parallel to the length direction of the wedge-shaped clamping block 100, one end of the first clamping screw is matched with a threaded hole in the clamping track 200, the auxiliary wedge-shaped clamping block 500 is rotatably provided with a second clamping screw 620, and the second clamping screw 620 is parallel to the length direction of the auxiliary wedge-shaped clamping block 500, and one end of the second clamping screw 620 is matched with a threaded hole in the wedge-shaped clamping block 100.

As a third embodiment of the present invention, referring to fig. 8 to 10, the entire clamping rail 200 is a folded plate structure, the wedge-shaped clamping block 100 is slidably disposed in the slot of the clamping rail 200, the oblique side of the wedge-shaped clamping block 100 and the corner position of the clamping rail 200 form a first slot 300 for clamping the wire harness, the straight side of the wedge-shaped clamping block 100 is provided with a sliding clamp plate 700, the clamping rail 200 is provided with a hook 230 in an extending manner, a second slot 400 for clamping the wire harness is formed between the sliding clamp plate 700 and the hook 230, and the length direction of the hook 230 and the length direction of the first slot 300 are arranged in a crossing manner.

When the main line and the branch line are connected, the main line is clamped between the oblique side of the wedge-shaped clamping block 100 and the corner position of the clamping track 200, the branch line is clamped between the clamping hook 230 and the sliding clamping plate 700, the oblique side of the wedge-shaped clamping block 100 and the corner position of the clamping track 200 are reduced by adjusting the wedge-shaped clamping block 100, the sliding clamping plate 700 moves upwards, and the main line and the branch line are clamped.

More preferably, the sliding clamping plate 700 abuts against the opening positions on the two sides of the clamping track 200, a screw 800 is arranged on the wedge-shaped clamping block 100, the screw 800 is in running fit with the wedge-shaped clamping block 100, one end of the screw 800 is connected with a threaded hole on the sliding clamping plate 700, and the screw 800 and the wedge-shaped clamping block 100 are arranged in parallel in the length direction.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.