阅读说明：本技术 可快速拆装的铰链装置 (Hinge device capable of being quickly disassembled and assembled ) 是由 刘慧� 于 2020-11-05 设计创作，主要内容包括：本发明公开了一种可快速拆装的铰链装置,包括第一组件、第二组件和连接组件,第一组件的侧面安装有第二组件,第一组件和第二组件的下端安装有连接组件,当柜门需要拆卸时,可向上推动伸缩柱,使伸缩柱侧壁开设的梯形槽能够对准限位头的两端,此时向下拉动底板,使限位头能够被倒置平顶圆锥体结构的伸缩孔挤压回缩,从而能够使连接柱从第一连接孔脱落,使柜门带着第一组件被快速拆卸下,相比传统需要拆卸完螺栓才能拿下,这种结构更架快速,当柜门需要进行安装时,第二连接角的上端对准第三连接角的下端,且第二连接角上端一侧开设的斜面槽能够对着伸缩头的下端,横向移动第二连接角,在斜面槽的结构下,使第二连接角在安装对接时更加的方便。(The invention discloses a hinge device capable of being quickly disassembled and assembled, which comprises a first component, a second component and a connecting component, wherein the second component is arranged on the side surface of the first component, the connecting component is arranged at the lower ends of the first component and the second component, when a cabinet door needs to be disassembled, a telescopic column can be pushed upwards, a trapezoidal groove formed in the side wall of the telescopic column can be aligned to two ends of a limiting head, a bottom plate is pulled downwards at the moment, the limiting head can be extruded and retracted by a telescopic hole of an inverted flat-top cone structure, so that a connecting column can fall off from a first connecting hole, the cabinet door can be quickly disassembled with the first component, compared with the traditional method that a bolt can be disassembled, the structure is more quick, when the cabinet door needs to be assembled, the upper end of a second connecting angle is aligned to the lower end of a third connecting angle, and an inclined plane groove formed in one side of the upper end of the second connecting angle can, the second connecting angle is moved transversely, and under the structure of the inclined plane groove, the second connecting angle is more convenient to mount and butt joint.)

1. The utility model provides a but quick assembly disassembly's hinge means, includes first subassembly (1), second subassembly (2) and coupling assembling (3), and the side-mounting of first subassembly (1) has second subassembly (2), and coupling assembling (3), its characterized in that are installed to the lower extreme of first subassembly (1) and second subassembly (2): the first assembly (1) comprises a first connecting piece (11), a first mounting hole (12), a first connecting angle (13), a first connecting hole (14) and a second connecting angle (15), the front surface of the first connecting piece (11) is provided with the first mounting hole (12) in a penetrating manner, the lower end of one side of the first connecting piece (11) is provided with a pair of first connecting angles (13), the upper end of the first connecting angle (13) is provided with the first connecting hole (14), the upper end of one side of the first connecting piece (11) is provided with the second connecting angle (15), and one side of the first connecting piece (11) is provided with the second assembly (2);

the second assembly (2) comprises a second connecting piece (21), a second mounting hole (22), a third connecting angle (23) and a fourth connecting angle (24), the front face of the second connecting piece (21) is provided with the second mounting hole (22) in a penetrating mode, the upper end of one side of the second connecting piece (21) is provided with the third connecting angle (23), and the lower end of one side of the second connecting piece (21) is provided with a pair of fourth connecting angles (24);

the connecting component (3) comprises a bottom plate (31) and a connecting column (32), and the connecting column (32) is installed at the upper end of the bottom plate (31).

2. The quick release hinge assembly of claim 1, wherein: the second connecting angle (15) comprises an inclined plane groove (151) and a telescopic hole (152), the inclined plane groove (151) is formed in one side of the upper end of the second connecting angle (15), the telescopic hole (152) is formed in the upper end of the second connecting angle (15) in a penetrating mode, and the telescopic hole (152) is of an inverted flat-top cone structure.

3. The quick release hinge assembly of claim 2, wherein: the telescopic hole (152) comprises a lifting groove (1521), a conical block (1522) and a limiting rod (1523), the lifting groove (1521) is formed in the wall of the inner cavity of the telescopic hole (152), the conical block (1522) is installed in the inner cavity of the telescopic hole (152), and the limiting rod (1523) is installed at the two ends of the conical block (1522).

4. The quick release hinge assembly of claim 1, wherein: the third connecting angle (23) comprises a first spring groove (231), a first spring (232) and a telescopic head (233), the first spring groove (231) is formed in an inner cavity of the third connecting angle (23), the first spring (232) is installed at the upper end of the inner cavity of the first spring groove (231), and the telescopic head (233) is installed at the lower end of the first spring (232).

5. The quick release hinge assembly of claim 4, wherein: first spring groove (231) include second spring groove (2311), second spring (2312) and triangle piece (2313), second spring groove (2311) have been seted up to the inner chamber wall of first spring groove (231), and second spring (2312) are installed to the inner chamber of second spring groove (2311), and triangle piece (2313) are installed to the one end of second spring (2312).

6. The quick release hinge assembly of claim 4, wherein: the telescopic head (233) comprises a first retainer ring (2331), a diamond-shaped block (2332), a top plate (2333) and a limiting column (2334), the first retainer ring (2331) is installed at the lower end of the telescopic head (233), the diamond-shaped block (2332) is installed at the upper end of the first retainer ring (2331), the top plate (2333) is installed at the upper end of the telescopic head (233), and the limiting column (2334) is installed at the lower end of the top plate (2333).

7. The quick release hinge assembly of claim 6, wherein: the lower end of the limiting column (2334) is provided with a groove (23341), and the groove (23341) is matched with the upper end of the diamond block (2332).

8. The quick release hinge assembly of claim 1, wherein: the connecting column (32) comprises a telescopic column (321), a third spring (322) and a limiting head (323), the telescopic column (321) is installed in the inner cavity of the connecting column (32), the third spring (322) is installed at the upper end of the telescopic column (321), the limiting head (323) is arranged on the side wall of the connecting column (32), and a trapezoidal groove (3211) is formed in the side wall of the telescopic column (321).

Technical Field

The invention relates to the technical field of hinges, in particular to a hinge device capable of being quickly disassembled and assembled.

Background

Hinges, also known as hinges, are mechanical devices used to connect two solids and allow relative rotation between them. The hinge may be constructed of a movable component or may be constructed of a foldable material. The hinges are mainly installed on doors and windows, and more hinges are installed on cabinets and are mainly classified into stainless steel hinges and iron hinges according to materials.

However, when the hinge of the prior cabinet door installation needs to be disassembled and separated, the bolt needs to be unscrewed, and the cabinet door and the hinge assembly can be separated, so that the bolt on the hinge of the cabinet door is installed at a certain height, and people are inconvenient to disassemble the bolt and cannot achieve quick disassembly and separation.

The problems described above are addressed. To this end, a quick-release hinge device is proposed.

Disclosure of Invention

The invention aims to provide a hinge device capable of being quickly disassembled and assembled, when a cabinet door needs to be disassembled, a telescopic column can be pushed upwards, a trapezoidal groove formed in the side wall of the telescopic column can be aligned to two ends of a limiting head, a bottom plate is pulled downwards at the moment, the limiting head can be extruded and retracted by a telescopic hole of an inverted flat-top cone structure, a connecting column can be made to fall off from a first connecting hole, the cabinet door can be quickly disassembled with a first assembly, compared with the conventional hinge device which can be taken down after a bolt needs to be disassembled, the hinge device is more quick in structure, and the problems in the background technology are solved.

In order to achieve the purpose, the invention provides the following technical scheme: a hinge device capable of being quickly disassembled and assembled comprises a first assembly, a second assembly and a connecting assembly, wherein the second assembly is installed on the side surface of the first assembly, the connecting assembly is installed at the lower ends of the first assembly and the second assembly, the first assembly comprises a first connecting sheet, a first installing hole, a first connecting angle, a first connecting hole and a second connecting angle, the first installing hole is formed in the front surface of the first connecting sheet in a penetrating mode, a pair of first connecting angles are installed at the lower end of one side of the first connecting sheet, the first connecting hole is formed in the upper end of the first connecting angle, the second connecting angle is installed at the upper end of one side of the first connecting sheet, and the second assembly is installed on one side of the first connecting sheet;

the second assembly comprises a second connecting sheet, a second mounting hole, a third connecting angle and a fourth connecting angle, the front surface of the second connecting sheet is provided with the second mounting hole in a penetrating manner, the upper end of one side of the second connecting sheet is provided with the third connecting angle, and the lower end of one side of the second connecting sheet is provided with a pair of fourth connecting angles;

the connecting assembly comprises a bottom plate and a connecting column, and the connecting column is installed at the upper end of the bottom plate.

Furthermore, the second connecting angle comprises an inclined plane groove and a telescopic hole, the inclined plane groove is formed in one side of the upper end of the second connecting angle, the telescopic hole is formed in the upper end of the second connecting angle in a penetrating mode, and the telescopic hole is of an inverted flat-top cone structure.

Furthermore, the telescopic hole comprises a lifting groove, a conical block and a limiting rod, the lifting groove is formed in the wall of the inner cavity of the telescopic hole, the conical block is installed in the inner cavity of the telescopic hole, and the limiting rod is installed at two ends of the conical block.

Furthermore, the third connecting angle comprises a first spring groove, a first spring and a telescopic head, the first spring groove is formed in an inner cavity of the third connecting angle, the first spring is installed at the upper end of the inner cavity of the first spring groove, and the telescopic head is installed at the lower end of the first spring.

Furthermore, the first spring groove comprises a second spring groove, a second spring and a triangular block, the second spring groove is formed in the wall of the inner cavity of the first spring groove, the second spring is installed in the inner cavity of the second spring groove, and the triangular block is installed at one end of the second spring.

Furthermore, the telescopic head comprises a first check ring, a diamond block, a top plate and a limiting column, the first check ring is installed at the lower end of the telescopic head, the diamond block is installed at the upper end of the first check ring, the top plate is installed at the upper end of the telescopic head, and the limiting column is installed at the lower end of the top plate.

Furthermore, the lower end of the limiting column is provided with a groove, and the groove is matched with the upper end of the diamond block.

Furthermore, the connecting column comprises a telescopic column, a third spring and a limiting head, the telescopic column is installed in the inner cavity of the connecting column, the third spring is installed at the upper end of the telescopic column, the limiting head is arranged on the side wall of the connecting column, and a trapezoidal groove is formed in the side wall of the telescopic column.

Compared with the prior art, the invention has the following beneficial effects:

1. according to the hinge device capable of being quickly disassembled and assembled, when the cabinet door needs to be disassembled, the telescopic column can be pushed upwards, the trapezoid-shaped groove formed in the side wall of the telescopic column can be aligned to two ends of the limiting head, the bottom plate is pulled downwards at the moment, the limiting head can be extruded and retracted by the telescopic hole of the inverted flat-top cone structure, the connecting column can fall off from the first connecting hole, the cabinet door can drive the first assembly to be quickly disassembled, and compared with the traditional hinge device which can be disassembled by bolts, the hinge device is quick in structure.

2. According to the hinge device capable of being quickly disassembled and assembled, when a cabinet door needs to be installed, the upper end of the second connecting angle is aligned to the lower end of the third connecting angle, the inclined plane groove formed in one side of the upper end of the second connecting angle can face the lower end of the telescopic head, the second connecting angle is transversely moved, the second connecting angle can be more convenient to install and butt joint under the structure of the inclined plane groove, the telescopic head is compressed at the moment, when the telescopic hole perpendicularly faces the lower end of the telescopic head, the telescopic head rebounds under the elastic force of the first spring, the telescopic head can be clamped into the telescopic hole, therefore, the second connecting angle can achieve the pre-alignment limiting effect when being installed, and the second connecting angle can be prevented from sliding down after being aligned.

3. The invention provides a hinge device capable of being quickly disassembled and assembled, when a connecting component needs to be installed and fixed, a connecting column penetrates through a first connecting angle and a fourth connecting angle, the pushed telescopic column is loosened, the telescopic column is pushed back under the elastic force of a third spring, so that a limiting head can be pushed out and clamped in an inner cavity of a telescopic hole, the connecting column can be limited and prevented from falling due to the fact that the inner cavity of the telescopic hole is of an inverted flat-top cone structure, when the connecting column rises in the inner cavity of the second connecting angle, the upper end of the connecting column pushes a cone-shaped block to move upwards, the cone-shaped block pushes the telescopic head to retract, after the connecting column is installed, the upper end of the cone-shaped block is clamped into the inner cavity of a first spring groove, at the moment, a triangular block is clamped at the lower end of the limiting column, so that the telescopic head cannot hinder the disassembly of a cabinet door, when the telescopic head needs to be limited, make the triangle-shaped piece remove to the lower extreme of diamond-shaped piece, loosen the flexible head that promotes this moment, flexible head makes flexible head downstream under the elasticity rebound of first spring, and flexible head downstream makes the upper end of diamond-shaped piece can block into the recess, and under the lasting rebound of first spring, the lower extreme of diamond-shaped piece makes the triangle-shaped piece retract to make the triangle-shaped piece block the lower extreme at the roof once more, thereby make things convenient for flexible head to connect the angle to the second once more and play the effect of location.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a partially disassembled view of the first assembly of the present invention;

FIG. 3 is a schematic view of the internal structure of the first assembly of the present invention;

FIG. 4 is a schematic view of a second assembly of the present invention;

FIG. 5 is an enlarged view of the structure at A in FIG. 4 according to the present invention;

FIG. 6 is a schematic bottom view of the spacing post of the present invention;

FIG. 7 is a schematic view of a connecting assembly of the present invention;

fig. 8 is a schematic view of the internal structure of the connecting assembly of the present invention.

In the figure: 1. a first component; 11. a first connecting piece; 12. a first mounting hole; 13. a first connection angle; 14. a first connection hole; 15. a second connecting angle; 151. an inclined plane groove; 152. a telescopic hole; 1521. a lifting groove; 1522. a conical block; 1523. a limiting rod; 2. a second component; 21. a second connecting sheet; 22. a second mounting hole; 23. a third connecting angle; 231. a first spring groove; 2311. a second spring groove; 2312. a second spring; 2313. a triangular block; 232. a first spring; 233. a telescopic head; 2331. a first retainer ring; 2332. diamond-shaped blocks; 2333. a top plate; 2334. a limiting column; 23341. a groove; 24. a fourth connecting angle; 3. a connecting assembly; 31. a base plate; 32. connecting columns; 321. a telescopic column; 3211. a trapezoidal groove; 322. a third spring; 323. a limiting head.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

Referring to fig. 1-3, a hinge device capable of being quickly disassembled and assembled includes a first assembly 1, a second assembly 2 and a connection assembly 3, the second assembly 2 is installed on a side surface of the first assembly 1, the connection assembly 3 is installed on lower ends of the first assembly 1 and the second assembly 2, the first assembly 1 includes a first connection sheet 11, a first installation hole 12, a first connection angle 13, a first connection hole 14 and a second connection angle 15, the second connection angle 15 includes an inclined plane groove 151 and a telescopic hole 152, the telescopic hole 152 includes a lifting groove 1521, a conical block 1522 and a limit rod 1523, a lifting groove 1521 is installed on an inner cavity wall of the telescopic hole 152, the conical block 1522 is installed in an inner cavity of the telescopic hole 152, the limit rod 3 is installed on two ends of the conical block 1522, the inclined plane groove 151 is installed on one side of an upper end of the second connection angle 15215, the telescopic hole 152 penetrates through an upper end of the second connection angle 15, and the telescopic hole 152 is of a flat top, and, first mounting hole 12 has been seted up in the front of first connecting piece 11 through, and a pair of first connection angle 13 is installed to one side lower extreme of first connecting piece 11, and first connecting hole 14 has been seted up to the upper end of first connection angle 13, and second connection angle 15 is installed to one side upper end of first connecting piece 11, and second subassembly 2 is installed to one side of first connecting piece 11.

Example 2

Referring to fig. 4, the second assembly 2 includes a second connecting piece 21, a second mounting hole 22, a third connecting angle 23 and a fourth connecting angle 24, the second mounting hole 22 is formed through the front surface of the second connecting piece 21, the third connecting angle 23 is mounted at the upper end of one side of the second connecting piece 21, and a pair of fourth connecting angles 24 is mounted at the lower end of one side of the second connecting piece 21.

Example 3

Referring to fig. 5-6, the third connecting corner 23 includes a first spring groove 231, the first spring groove 231 includes a second spring groove 2311, a second spring 2312 and a triangular block 2313, the inner cavity wall of the first spring groove 231 is provided with the second spring groove 2311, the inner cavity of the second spring groove 2311 is provided with the second spring 2312, one end of the second spring 2312 is provided with the triangular block 2313, the first spring 232 and the telescopic head 233, the telescopic head 233 includes a first retainer ring 2331, a diamond block 2332, a top plate 2333 and a stopper pillar 2334, the lower end of the stopper pillar 2334 is provided with a groove 23341, the groove 23341 is matched with the upper end of the diamond block 2332, the lower end of the telescopic head 233 is provided with the first retainer ring 2331, the upper end of the first retainer ring 2331 is provided with the diamond block 2332, the upper end of the telescopic head 233 is provided with the top plate 2333, the lower end of the top plate 2333 is provided with the stopper pillar 2334, when the connecting pillar connecting assembly 3 needs to be installed and fixed, the connecting pillar 32, at this time, the pushed telescopic column 321 is released, the telescopic column 321 is pushed back by the elastic force of the third spring 322, so that the limiting head 323 can be pushed out to be clamped in the inner cavity of the telescopic hole 152, the connecting column 32 can be limited to prevent falling because the inner cavity of the telescopic hole 152 is of an inverted flat cone structure, and when the connecting column 32 rises in the inner cavity of the second connecting corner 15, the upper end of the connecting column 32 pushes the conical block 1522 to move upwards, the conical block 1522 pushes the telescopic head 233 to retract, after the connecting column 32 is installed, the upper end of the conical block 1522 is clamped in the inner cavity of the first spring groove 231, at this time, the triangular block 2313 is clamped at the lower end of the limiting column 2334, so that when the cabinet door is disassembled, the telescopic head 233 cannot obstruct the disassembly of the cabinet door, when the telescopic head 233 needs to be limited again, the telescopic head 233 can be manually pushed upwards to move the triangular block 2313 to the lower end of the diamond block 2332, the retractable head 233 is rebounded by the elastic force of the first spring 232 to move the retractable head 233 downward, the retractable head 233 moves downward to allow the upper end of the diamond block 2332 to be engaged into the groove 23341, the lower end of the diamond block 2332 retracts the triangular block 2313 under the continuous rebounding of the first spring 232, so that the triangular block 2313 can be engaged with the lower end of the top plate 2333 again, thereby facilitating the retractable head 233 to have a positioning effect on the second connecting corner 15 again, the inner cavity of the third connecting corner 23 is opened with the first spring groove 231, the upper end of the inner cavity of the first spring groove 231 is installed with the first spring 232, the lower end of the first spring 232 is installed with the retractable head 233, when the door needs to be installed, the upper end of the second connecting corner 15 is aligned with the lower end of the third connecting corner 23, and the inclined plane groove 151 opened at one side of the upper end of the second inclined plane connecting corner 15 can be aligned with the lower end of the retractable head 233, the second connecting corner 15 is moved laterally, under the structure of the cabinet, can make second connection angle 15 more convenient when the installation butt joint, the flexible head 233 is compressed this moment, and when flexible hole 152 was perpendicular to the lower extreme of flexible head 233, flexible head 233 made flexible head 233 can block into flexible hole 152 under the elasticity rebound of first spring 232 to make second connection angle 15 play the spacing effect of lining up in advance when the installation, and can prevent that second connection angle 15 from landing after lining up.

Example 4

Referring to fig. 7-8, the connecting assembly 3 includes a bottom plate 31 and a connecting column 32, the connecting column 32 includes a telescopic column 321, a third spring 322 and a limiting head 323, the telescopic column 321 is installed in the inner cavity of the connecting column 32, the third spring 322 is installed at the upper end of the telescopic column 321, the limiting head 323 is installed on the side wall of the connecting column 32, the trapezoidal groove 3211 is installed on the side wall of the telescopic column 321, when the cabinet door needs to be disassembled, the telescopic column 321 can be pushed upwards to make the trapezoidal groove 3211 formed on the side wall of the telescopic column 321 align with the two ends of the limiting head 323, at this time, the bottom plate 31 is pulled downwards to make the limiting head 323 be extruded and retracted by the telescopic hole 152 of the inverted flat-top cone structure, thereby can make spliced pole 32 drop from first connecting hole 14, make the cabinet door take first subassembly 1 to be dismantled down fast, compare the tradition and need dismantle the bolt just can take down, this kind of structure is more quick, and spliced pole 32 is installed to the upper end of bottom plate 31.

In summary, the following steps: the invention provides a hinge device capable of being quickly disassembled and assembled, which comprises a first component 1, a second component 2 and a connecting component 3, wherein the second component 2 is arranged on the side surface of the first component 1, the connecting component 3 is arranged at the lower ends of the first component 1 and the second component 2, when a cabinet door needs to be disassembled, a telescopic column 321 can be upwards pushed, a trapezoidal groove 3211 formed in the side wall of the telescopic column 321 can be aligned to two ends of a limiting head 323, at the moment, a bottom plate 31 is downwards pulled, the limiting head 323 can be extruded and retracted by a telescopic hole 152 of an inverted flat-top cone structure, so that a connecting column 32 can fall off from a first connecting hole 14, the cabinet door can be quickly disassembled with the first component 1, compared with the conventional mode that the cabinet door can be taken down after a bolt is disassembled, the structure is more quick, when the cabinet door needs to be assembled, the upper end of a second connecting angle 15 is aligned to the lower end of a third connecting angle 23, and a groove 151 formed in one side of the upper end of the second, the second connecting angle 15 is moved transversely, under the structure of the inclined plane groove 151, the second connecting angle 15 can be more conveniently mounted and butted, at the moment, the telescopic head 233 is compressed, when the telescopic hole 152 vertically faces the lower end of the telescopic head 233, the telescopic head 233 rebounds under the elastic force of the first spring 232, the telescopic head 233 can be clamped into the telescopic hole 152, so that the second connecting angle 15 can achieve the pre-alignment limiting effect when being mounted, and the second connecting angle 15 can be prevented from slipping off after being aligned, when the connecting assembly 3 needs to be mounted and fixed, the connecting column 32 penetrates through the first connecting angle 13 and the fourth connecting angle 24, at the moment, the pushed telescopic column 321 is loosened, the telescopic column 321 is pushed back under the elastic force of the third spring 322, so that the limiting head 323 can be pushed out to be clamped in the inner cavity of the telescopic hole 152, because the inner cavity of the telescopic hole 152 is of an inverted flat-top cone structure, the connecting column 32 can be limited, the falling is prevented, when the connecting column 32 rises in the inner cavity of the second connecting corner 15, the upper end of the connecting column 32 pushes the conical block 1522 to move upwards, the conical block 1522 pushes the telescopic head 233 to retract, when the connecting column 32 is installed, the upper end of the conical block 1522 is clamped in the inner cavity of the first spring groove 231, the triangular block 2313 is clamped at the lower end of the limiting column 2334, so that the telescopic head 233 cannot obstruct the disassembly of the cabinet door when the cabinet door is disassembled, when the telescopic head 233 needs to be limited again, the telescopic head 233 can be manually pushed upwards, the triangular block 2313 moves to the lower end of the diamond block 2312, the pushed telescopic head 233 is loosened, the telescopic head 233 rebounds under the elastic force of the first spring 232, the telescopic head 233 moves downwards, the upper end of the diamond block 2332 can be clamped in the groove 23141, under the continuous rebounding of the first spring 232, the lower end of the diamond block 2332 retracts the triangular block 2313, so that the triangle block 2313 can be clamped at the lower end of the top plate 2333 again, thereby facilitating the telescopic head 233 to play a positioning role again for the second connecting angle 15.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.