阅读说明：本技术 带齿尖定子铁心齿的绕线机构 (Winding mechanism with tooth point stator core teeth ) 是由 张利国 姚大青 肇启鹏 于 2019-09-12 设计创作，主要内容包括：本申请涉及盘式电机技术领域,公开了一种带齿尖定子铁心齿的绕线机构,包括：底座、主动盘、从动盘、至少两个轴承座,主动盘和从动盘安装于底座、且沿第一方向排列,各轴承座沿第一方向排列,且各轴承座安装于底座、且位于主动盘和从动盘之间；主动盘、从动盘以及各轴承座上均可旋转的设有铁心齿夹紧架,各铁心齿夹紧架的旋转轴心线重合、且沿第一方向延伸；每相邻的两个铁心齿夹紧架相互配合形成用于固定一个铁心齿的固定机构；每一个铁心齿夹紧架上形成有用于穿线的走线槽。本申请公开的一种带齿尖定子铁心齿的绕线机构,可以一次性对多个铁心齿进行绕线,且使相邻两个铁心齿之间预留的线长度一致,从而提高产品的质量。(The application relates to the technical field of disc motors, and discloses a winding mechanism with tooth point stator core teeth, which comprises: the driving disc and the driven disc are arranged on the base and are arranged along a first direction, the bearing seats are arranged along the first direction, and the bearing seats are arranged on the base and are positioned between the driving disc and the driven disc; iron core tooth clamping frames are rotatably arranged on the driving disc, the driven disc and the bearing seats, and the rotating axial leads of the iron core tooth clamping frames are overlapped and extend along a first direction; every two adjacent iron core tooth clamping frames are mutually matched to form a fixing mechanism for fixing one iron core tooth; and a wiring groove for threading is formed on each iron core tooth clamping frame. The application discloses a take winding mechanism of prong stator core tooth can once only carry out the wire winding to a plurality of core teeth, and makes the line length of reserving between two adjacent core teeth unanimous to improve the quality of product.)

1. The winding mechanism with the tooth point stator core teeth is characterized by comprising a base, a driving disc, a driven disc and at least two bearing seats, wherein the driving disc and the driven disc are arranged on the base and are arranged along a first direction; wherein;

iron core tooth clamping frames are rotatably arranged on the driving disc, the driven disc and the bearing seats, and the rotating axial leads of the iron core tooth clamping frames are overlapped and extend along the first direction; every two adjacent iron core tooth clamping frames are mutually matched to form a fixing mechanism for fixing one iron core tooth;

and a wiring groove for threading is formed on each iron core tooth clamping frame.

2. A winding mechanism with tooth tipped stator core teeth according to claim 1, characterized in that the bearing housing is detachably provided on the base, and the driving disk and/or the driven disk is/are mounted to the base adjustable in position in a first direction with respect to the base.

3. A winding mechanism for a toothed pointed stator core tooth as claimed in claim 2, wherein said base is provided with mounting areas for mounting said driving disk and said driven disk;

each mounting area is internally provided with a plurality of kidney-shaped holes, the kidney-shaped holes extend along the first direction, and the driving disc and the driven disc are connected with the kidney-shaped holes through connecting pieces.

4. A winding mechanism with teeth pointed stator core teeth as recited in claim 2, characterized in that said base has slide rails at both ends thereof, said slide rails disposed at both ends of said base are located on the same straight line, and said slide rails disposed at both ends of said base extend in said first direction; the driving disc and the driven disc are close to one side of the base and are respectively provided with a sliding groove matched with sliding rails at two ends of the base, and positioning pieces used for enabling the driving disc and the driven disc to be positioned are arranged on the driving disc and the driven disc.

5. A winding mechanism with tooth tipped stator core teeth according to claim 1, characterized in that said core tooth clamping frame connected to said driving disk and said driven disk comprises a first frame body and a fixed shaft fixedly attached to said first frame body;

the fixed shaft is used for being connected with the driving disc or the driven disc, one side, far away from the driving disc or the driven disc, of the first frame body is provided with a first special-shaped hole, and the first special-shaped hole is matched with the end face of the iron core teeth and used for limiting the movement of the iron core teeth in the circumferential direction.

6. A winding mechanism for a toothed cusp stator core tooth as recited in claim 5, further characterized in that said first frame body defines a plurality of said routing slots;

the routing groove extends towards a corner near the first profiled aperture.

7. A winding mechanism for a toothed pointed stator core tooth as set forth in claim 1 wherein said core tooth clamping mount mounted on said bearing housing includes a second body;

one side of the second frame body is provided with a second special-shaped hole used for being matched with the tail end of one iron core tooth, the other side of the second frame body is provided with a third special-shaped hole used for being matched with the head end of the iron core tooth adjacent to the tail end of the one iron core tooth, the second special-shaped hole is used for limiting the movement of the iron core tooth matched with the second special-shaped hole in the circumferential direction, and the third special-shaped hole is used for limiting the movement of the iron core tooth matched with the third special-shaped hole in the circumferential direction.

8. A winding mechanism for a toothed cusp stator core tooth as recited in claim 7, wherein said second frame body defines a plurality of said tracking slots;

the wiring groove extends to a corner near the second profile hole and the third profile hole.

Technical Field

The application relates to the technical field of disc motors, in particular to a winding mechanism with tooth point stator core teeth.

Background

The stator of the existing multiphase dual-rotor single-stator disc type motor is composed of a plurality of independent tooth-tip stator core tooth units (called armature teeth) sleeved with coils. A tooth-tip stator core consisting of a plurality of teeth of a traditional double-rotor single-stator disc type motor belongs to an open slot motor. The coil of each iron core tooth of the open slot motor is simple to manufacture, a mold consistent with the iron core is generally manufactured firstly, the coil is wound on the mold, and the mold is removed after the coil is wound, wherein the coil is embodied in patents CN108075589A (application No. 201810024773.1) and CN207910571U (application No. 201820223509.6).

However, the open slot motor has the defects of low magnetic efficiency, large cogging torque fluctuation and large eddy current loss of a permanent magnet, in order to solve the defects of the open slot motor, teeth of a toothed sharp stator core of the motor are provided with teeth points, the toothed sharp stator core formed by a plurality of teeth belongs to a semi-closed slot motor, and the cross section of two ends of each tooth is large. However, when the stator core teeth with tooth tips are wound, only one core tooth can be wound at a time, and after each group of armature teeth is finished, the core on the device needs to be disassembled and then the next group is assembled for winding, so that the working efficiency is low. Meanwhile, a plurality of coils need to be welded and connected into one phase, so that the electrical reliability is reduced, and the quality of a product is reduced.

Disclosure of Invention

The application provides a take winding mechanism of tooth point stator core tooth can once only carry out the wire winding to a plurality of tooth point stator core teeth of taking, and makes the line length of reserving between two adjacent iron core teeth unanimous to improve the quality of product.

In order to achieve the above object, the present application provides a winding mechanism for a tooth-tipped stator core, comprising: the driving disc and the driven disc are arranged on the base and are arranged along a first direction, the bearing blocks are arranged along the first direction, and the bearing blocks are arranged on the base and are positioned between the driving disc and the driven disc; wherein;

iron core tooth clamping frames are rotatably arranged on the driving disc, the driven disc and the bearing seats, and the rotating axial leads of the iron core tooth clamping frames are overlapped and extend along the first direction; every two adjacent iron core tooth clamping frames are mutually matched to form a fixing mechanism for fixing one iron core tooth;

and a wiring groove for threading is formed on each iron core tooth clamping frame.

In the winding mechanism with the tooth-tip stator core teeth, the driving disc and the driven disc are both arranged on the base and are arranged along the first direction, each bearing seat is arranged on the base and is positioned between the driving disc and the driven disc, and each bearing seat is arranged along the first direction; iron core tooth clamping frames are rotatably arranged on the driving disc, the driven disc and the bearing seats, and the rotating axial leads of the iron core tooth clamping frames are overlapped and extend along the first direction; every two adjacent iron core tooth clamping frames are mutually matched to form a fixing mechanism for fixing one iron core tooth, therefore, a plurality of bearing seats are arranged on the base, a plurality of fixing mechanisms can be formed, and then a plurality of teeth-tip-shaped stator iron core teeth can be wound at one time so as to improve the winding speed. In addition, because each iron core tooth clamping frame is provided with a wiring groove for threading, when a copper wire is wound on the next iron core tooth after the last iron core tooth is wound, the copper wire passes through the wiring groove arranged on the iron core tooth clamping frame in the bearing seat, and the wiring grooves on the iron core tooth clamping frames in the bearing seats are the same in length, so that the lengths of the copper wires between the iron core teeth completing the winding are the same, the resistance between the iron core teeth is the same, the electrical reliability is improved, and the product quality is improved.

Compared with the winding mechanism in the prior art, only one iron core tooth can be wound at a time, the length of a copper wire between two adjacent iron core teeth needs to be manually adjusted, and the iron core teeth after winding are connected in a welding mode, so that not only are more welding points generated, but also errors are easily generated by manually adjusting the length. And the winding mechanism of tooth point stator core tooth of taking tooth in this application can once carry out the wire winding to a plurality of core teeth, because be formed with the trough that is used for the threading on each core tooth presss from both sides tight frame to interconnect promptly when the wire winding is accomplished between a plurality of core teeth of messenger's wire winding at every turn, and the distance between two adjacent core teeth is the same, the effectual quality and the winding speed that has improved the product.

Preferably, the bearing seat is detachably arranged on the base, and the driving disc and/or the driven disc can be arranged on the base along a first direction position in an adjustable mode relative to the base.

Preferably, the base is provided with a mounting area for mounting the driving disc and the driven disc;

each mounting area is internally provided with a plurality of kidney-shaped holes, the kidney-shaped holes extend along the first direction, and the driving disc and the driven disc are connected with the kidney-shaped holes through connecting pieces.

Preferably, the two ends of the base are respectively provided with a sliding rail, the sliding rails arranged at the two ends of the base are positioned on the same straight line, and the sliding rails arranged at the two ends of the base extend along the first direction; the driving disc and the driven disc are close to one side of the base and are respectively provided with a sliding groove matched with sliding rails at two ends of the base, and positioning pieces used for enabling the driving disc and the driven disc to be positioned are arranged on the driving disc and the driven disc.

Preferably, the iron core tooth clamping frame connected with the driving disc and the driven disc comprises a first frame body and a fixed shaft fixedly connected to the first frame body;

the fixed shaft is used for being connected with the driving disc or the driven disc, one side, far away from the driving disc or the driven disc, of the first frame body is provided with a first special-shaped hole, and the first special-shaped hole is matched with the end face of the iron core teeth and used for limiting the movement of the iron core teeth in the circumferential direction.

Preferably, a plurality of the wiring grooves are arranged on the first frame body;

the routing groove extends towards a corner near the first profiled aperture.

Preferably, the core tooth clamping frame mounted on the bearing housing includes a second frame body;

one side of the second frame body is provided with a second special-shaped hole used for being matched with the tail end of one iron core tooth, the other side of the second frame body is provided with a third special-shaped hole used for being matched with the head end of the iron core tooth adjacent to the tail end of the one iron core tooth, the second special-shaped hole is used for limiting the movement of the iron core tooth matched with the second special-shaped hole in the circumferential direction, and the third special-shaped hole is used for limiting the movement of the iron core tooth matched with the third special-shaped hole in the circumferential direction.

Preferably, a plurality of wiring grooves are formed in the second frame body;

the wiring groove extends to a corner near the second special-shaped hole and the third special-shaped hole.

Drawings

FIG. 1 is a front view of a winding mechanism for a tooth of a pointed stator core in accordance with an embodiment of the present application;

FIG. 2 is a top view of a winding mechanism for a tooth of a pointed stator core in accordance with an embodiment of the present application;

FIG. 3 is a side view of a first core tooth clamp of a winding mechanism for a pointed stator core tooth in accordance with an embodiment of the present application;

FIG. 4 is a front view of a first core tooth clamp of a winding mechanism for a pointed stator core tooth in accordance with an embodiment of the present application;

5a-5c are side views and front and rear front views of a second core tooth clamp in a winding mechanism for a pointed stator core tooth in accordance with an embodiment of the present application;

fig. 6 is a schematic diagram of core tooth winding in a winding mechanism for a stator core tooth with a tooth point according to an embodiment of the present application.

Icon: 1-a base; 2-driving disk; 3-a first iron core tooth clamping frame; 4-a second iron core tooth clamping frame; 5, bearing seats; 6-driven disc; 7-core teeth; 31-a first frame body; 32-a fixed shaft; 311-a first profiled hole; 312-a first cabling channel; 41-a second frame body; 411-a second cabling channel; 412-a second shaped aperture; 413-third differential pore.

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.

Referring to fig. 1 and 2, an embodiment of the present application provides a winding mechanism for a tooth of a stator core with a tooth tip, including: the device comprises a base 1, a driving disc 2, a driven disc 6 and at least two bearing seats 5, wherein the driving disc 2 and the driven disc 6 are arranged on the base 1 and are arranged along a first direction, the bearing seats 5 are arranged along the first direction, and the bearing seats 5 are arranged on the base 1 and are positioned between the driving disc 2 and the driven disc 6; wherein;

iron core tooth clamping frames are rotatably arranged on the driving disc 2, the driven disc 6 and the bearing seats 5, and the rotating axial leads of the iron core tooth clamping frames are overlapped and extend along the first direction; every two adjacent iron core tooth clamping frames are mutually matched to form a fixing mechanism for fixing one iron core tooth 7;

and a wiring groove for threading is formed on each iron core tooth clamping frame.

Wherein, the first direction is the same as the length direction of the base 1.

In the winding mechanism with the tooth tip stator core teeth in the embodiment of the application, a driving disc 2, a driven disc 6 and bearing blocks 5 arranged between the driving disc 2 and the driven disc 6 are all arranged on a base 1 and are arranged along a first direction; iron core tooth clamping frames are rotatably arranged on the driving disc 2, the driven disc 6 and the bearing seats 5, and the rotating axial leads of the iron core tooth clamping frames are overlapped and extend along the first direction; every two adjacent iron core tooth clamping frames are matched with each other to form a fixing mechanism for fixing one iron core tooth 7, so that a plurality of bearing seats 5 are arranged on the base 1, a plurality of fixing mechanisms can be formed, and the iron core teeth 7 can be wound at one time to improve the winding speed. In addition, because each iron core tooth clamping frame is provided with a wiring groove for threading, when a copper wire is wound on the next iron core tooth 7 after the previous iron core tooth 7 is wound, the copper wire passes through the wiring groove arranged on the iron core tooth clamping frame in the bearing seat 5, and the wiring grooves on the iron core tooth clamping frames in the bearing seats 5 are the same in length, so that the lengths of the copper wires between a plurality of iron core teeth completing the winding are the same, the same resistance among a plurality of groups of iron core teeth is ensured, the electrical reliability is improved, and the quality of products is improved.

Compared with the winding mechanism in the prior art, only one iron core tooth 7 can be wound at a time, the length of a copper wire between two adjacent iron core teeth 7 needs to be manually adjusted, and the iron core teeth 7 after winding are connected in a welding mode, so that not only are a plurality of welding points generated, but also errors are easily generated by manually adjusting the length. And the winding mechanism of the tooth point stator core tooth in this application can once carry out the wire winding to a plurality of core teeth 7, because each core tooth 7 presss from both sides and is formed with the trough that is used for the threading on the tight frame to interconnect promptly when the wire winding is accomplished between a plurality of core teeth 7 of making at every turn wire winding, and the distance between two adjacent core teeth 7 is the same, the effectual quality and the winding speed that have improved the product.

Alternatively, the bearing seat 5 may be detachably provided on the base 1, and the driving disk 2 and/or the driven disk 6 may be mounted on the base 1 at a first direction position adjustable with respect to the base 1.

Wherein, the installation mode that the position of the driving disc 2 and/or the driven disc 6 is adjustable along the first direction relative to the base 1 has a plurality of, for example: the base 1 is provided with an installation area for installing the driving disc 2 and the driven disc 6; and a plurality of kidney-shaped holes are formed in each mounting area, the kidney-shaped holes extend along the first direction, and the driving disc 2 and the driven disc 6 are connected with the kidney-shaped holes through connecting pieces. The connecting piece can be a bolt and a nut, the bolt penetrates through the bottom of the driving disk 2 or the driven disk 6 and enters the kidney-shaped hole, the driving disk 2 or the driven disk 6 is adjusted to a proper position, and the bolt is locked by the nut so that the driving disk 2 or the driven disk 6 is fixed.

Or, the two ends of the base 1 are respectively provided with a sliding rail, the sliding rails arranged at the two ends of the base 1 are positioned on the same straight line, and the sliding rails arranged at the two ends of the base 1 extend along the first direction; the driving disc 2 and the driven disc 6 are close to one side of the base 1 and are respectively provided with a sliding groove matched with sliding rails at two ends of the base 1, and positioning pieces used for enabling the driving disc 2 and the driven disc 6 to be positioned are arranged on the driving disc 2 and the driven disc 6. The positions of the driving disk 2 and the driven disk 6 relative to the base 1 can be adjusted by sliding the driving disk 2 and the driven disk 6.

In addition, the bearing seat 5 and the base 1 can also be connected in a bolt and nut mode, and a plurality of kidney-shaped holes are arranged at the corresponding positions of the base 1, so that the position of the bearing seat 5 can be conveniently adjusted.

In this embodiment, the driving disk 2 and/or the driven disk 6 are/is adjusted to increase the distance between the driving disk 2 and the driven disk 6, and further, the number of the bearing seats 5 arranged between the driving disk 2 and the driven disk 6 can be increased, so that the number of the formed fixing mechanisms for fixing the iron core teeth 7 is increased, and the purpose of winding more iron core teeth 7 at a time is achieved; the driving disk 2 and/or the driven disk 6 are adjusted to reduce the distance between the driving disk 2 and the driven disk 6, and further the number of the bearing blocks 5 arranged between the driving disk 2 and the driven disk 6 is reduced, so that the number of the formed fixing mechanisms for fixing the core teeth 7 is reduced, and the number of the core teeth 7 wound at one time is reduced.

As an alternative, with continued reference to fig. 3, the core tooth clamping frame connected to the driving disk 2 and the driven disk 6 includes a first frame body 31 and a fixed shaft 32 fixedly connected to the first frame body 31; the fixed shaft 32 is used for being connected with the driving disk 2 or the driven disk 6, one side of the first frame body 31, which is far away from the driving disk 2 or the driven disk 6, is provided with a first special-shaped hole 311, and the first special-shaped hole is matched with the end face of the iron core teeth 7 and used for limiting the movement of the iron core teeth 7 in the circumferential direction.

The iron core tooth clamping frame connected with the driving disk 2 and the driven disk 6 is a first iron core tooth clamping frame 3.

In this embodiment, the fixed shaft 32 is used to connect with the driving disk 2 or the driven disk 6, so that the first frame body 31 can be driven by the driving disk 2, or the first frame body 31 can be rotatably disposed on the driven disk 6, thereby ensuring that the core teeth 7 can be wound with the rotation of the driving disk 2 after being matched with the first special-shaped holes 311 on the first frame body 31; in addition, the arrangement of the first special-shaped hole 311 ensures the stability of the copper wire when the copper wire is wound while ensuring that the core teeth 7 rotate along with the rotation of the first frame body 31.

As an alternative, please continue to refer to fig. 4, a plurality of the cabling slots are disposed on the first frame body 31; the routing grooves extend towards the corners close to the first profiled hole 311.

The wiring duct provided on the first frame body 31 is a first wiring duct 312.

In this embodiment, the wiring groove formed on the first frame body 31 extends to a corner near the first special-shaped hole 311, so that when winding is performed, the copper wire starts to be wound from the end of the core tooth 7, and the winding arrangement is more compact.

As an alternative, with continued reference to fig. 5a-c, the core tooth clamping frame mounted on the bearing housing 5 comprises a second frame body 41;

a second special-shaped hole 412 for matching with the tail end of one core tooth 7 is arranged at one side of the second frame body 41, a third special-shaped hole 413 for matching with the head end of the core tooth 7 adjacent to the tail end of the one core tooth 7 is arranged at the other side of the second frame body 41, the second special-shaped hole 412 is used for limiting the movement of the core tooth 7 matched with the second special-shaped hole in the circumferential direction, and the third special-shaped hole 413 is used for limiting the movement of the core tooth 7 matched with the third special-shaped hole in the circumferential direction.

A plurality of wiring grooves are formed in the second frame body 41; the wiring groove extends towards a corner near the second and third profiled holes 412, 413.

Wherein, the iron core teeth clamping frame installed on the bearing seat 5 is a second iron core teeth clamping frame 4, and the wiring groove arranged on the second frame body 41 is a second wiring groove 411.

In this embodiment, one end of the wiring groove on the second frame body 41 near the corner of the second special-shaped hole 412 may be in an inclined state to change the length of the copper wire between two adjacent core teeth 7; the length of the copper wire between two adjacent iron core teeth 7 can be changed by adjusting the width of the second frame body 41; the second body 41 is provided with a second special-shaped hole 412 so that the second body 41 can be connected to the first body 31 or the second body 41 via the core teeth 7.

In addition, the structures of the first, second, and third irregularly-shaped holes 311, 412, and 413 may be the same, and the first, second, and third irregularly-shaped holes 311, 412, and 413 each have four corners.

The winding mechanism of the stator core tooth with the tooth tip in the embodiment of the application specifically winds the core tooth 7 and comprises the following steps;

firstly, covering the surface of the iron core teeth 7 which need to be wound with an insulating material; or directly adopting the iron core teeth 7 coated with insulating materials on the surface;

fixing the driven disc 6 on the base 1 through a connecting piece, and adjusting a chuck of the driven disc 6 and a fixed shaft 32 on a core tooth clamping frame connected with the driven disc 6 to proper positions; then, the end face of the core tooth 7 is placed in the first special-shaped hole 311 arranged on the first frame body 31, the core tooth clamping frame is installed on the bearing seat 5, and the position of the bearing seat 5 on the base 1 is adjusted, so that the second special-shaped hole 412 or the third special-shaped hole 413 arranged on the core tooth clamping frame is tightly matched with the end part of the core tooth 7, thereby the core tooth 7 is firmly fixed, and after the plurality of bearing seats 5 are sequentially installed and the driving disk 2 is installed according to the method, the positions of the bearing seat 5 and the driving disk 2 are adjusted and fastened.

Referring to fig. 6, one end of the copper wire is fixed on the driving disk 2, and the winding operation is started by rotating the driving disk 2. The following rules should be met during winding:

if N layers are supposed to be wound together, the number of winding turns of each layer is consistent with that the 1 st layer and the last N layer are S turns, and the rest 2 to (N-1) layers are (S-1) turns;

the winding directions of the adjacent layers are opposite: that is, if the first layer is wound from top to bottom, the second layer is wound from bottom to top, and the process is repeated until the winding is finished, or vice versa.

The winding direction on the adjacent core teeth 7 may be the same as or opposite to the starting winding direction of the first group of core teeth 7, depending on design requirements.

When in specific winding, firstly, a copper wire with proper length is intercepted, then one end of the copper wire is fixed on a fixed shaft 32 on an iron core tooth clamping frame connected with a driving disc 2, and the copper wire penetrates through a wiring groove on the iron core tooth clamping frame to be wound on an iron core tooth 7, the other end of the copper wire needs to provide tension capable of keeping the whole copper wire in a tight state in the winding process, a rubber hammer auxiliary tool is adopted during winding, the copper wire is enabled to be arranged on the iron core tooth 7 in a compact and orderly manner by knocking the copper wire, after a group of coils are completed, a binding belt is adopted for binding and fastening, after the fixation is completed, the rest copper wire penetrates through the wiring groove on the iron core tooth clamping frame adjacent to the previous iron core tooth clamping frame, the length of the reserved wire between two adjacent iron core teeth 7 is the length of the wire bottom part, the iron core teeth 7 continue to be wound according to the designed winding direction, the above process is repeated until all coil windings are completed.

After the last group of coils is wound, all coils are prevented from loosening: the outside is bound and fastened by a binding belt, and the assembly tool can be taken off in the reverse order.

Winding and tightly wrapping the coil by adopting a polytetrafluoroethylene film, heating the coil and insulating paint together to 70 ℃ for 1 hour, dripping proper insulating paint (the same treatment is carried out on the two sides) into gaps between the periphery of the iron core and the copper wire, heating to 160 ℃, keeping the temperature for 6 hours, taking out, and finishing curing.

It will be apparent to those skilled in the art that various changes and modifications may be made in the embodiments of the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.