阅读说明：本技术 一种具有固定颌面结构的整形美容装置 (Cosmetic device of plastic with fixed jaw face structure ) 是由 沈学良 于 2021-09-14 设计创作，主要内容包括：本发明涉及医疗美容技术领域,具体为一种具有固定颌面结构的整形美容装置,包括底座、控制面板和控制器,所述底座的上方设置有旋转组件,所诉旋转组件包括控制面板,所述底座的上方设置有控制面板,所述底座的上方设置有控制器,所述底座的上方通过活动槽连接有电动气缸,所述电动气缸的另一端通过活动槽连接有靠板,所述底座的外部设置有转动轴,所述转动轴的外部连接有靠板,所述靠板的内部设置有防护垫。本发明能够实现角度调节,从而便于对颌面部边缘部进行操作,提高整形效率,同时也方便对不同部位进行操作,能够适应不同使用者进行颌面部的固定,从而提高装置的使用效率。(The invention relates to the technical field of medical cosmetology, in particular to a plastic cosmetology device with a fixed jaw face structure, which comprises a base, a control panel and a controller, wherein a rotating assembly is arranged above the base and comprises the control panel, the controller is arranged above the base, an electric cylinder is connected above the base through a movable groove, the other end of the electric cylinder is connected with a backup plate through the movable groove, a rotating shaft is arranged outside the base, the backup plate is connected outside the rotating shaft, and a protective pad is arranged inside the backup plate. The invention can realize angle adjustment, thereby facilitating the operation of the edge part of the maxillofacial part and improving the reshaping efficiency, facilitating the operation of different parts, being suitable for different users to fix the maxillofacial part and improving the use efficiency of the device.)

1. A cosmetic device of plastic with fixed jaw face structure, includes base (1), control panel (21) and controller (22), its characterized in that: the top of base (1) is provided with rotating assembly (2), and the rotating assembly (2) of telling includes control panel (21), the top of base (1) is provided with controller (22), the top of base (1) is connected with electric cylinder (23) through activity groove (24), the other end of electric cylinder (23) is connected with backup plate (25) through activity groove (24), the outside of base (1) is provided with axis of rotation (27), the external connection of axis of rotation (27) has backup plate (25), the inside of backup plate (25) is provided with protection pad (26), the horizontal end of backup plate (25) is connected with adjusting part (3), the below of adjusting part (3) is provided with fixed subassembly (4).

2. An orthopaedic device with a fixed maxillofacial structure according to claim 1, wherein: the output of control panel (21) is connected with the receiving terminal of controller (22), electric cylinder (23) are through the bolt rotation with activity groove (24) and are connected, the output of controller (22) is connected with the receiving terminal of electric cylinder (23), electric cylinder (23) are provided with four altogether, backup plate (25) are the semicircle structure, base (1) is through axis of rotation (27) and backup plate (25) and rotates and be connected, the one end of backup plate (25) is circular-arcly, the below of backup plate (25) is provided with two arc recesses, and the arc recess is in the both ends of axis of rotation (27) respectively.

3. An orthopaedic device with a fixed maxillofacial structure according to claim 1, wherein: the adjusting component (3) comprises a sliding plate (31), a sliding rail (33) is arranged below the sliding plate (31), the sliding rail (33) is connected to the horizontal end of the backup plate (25), a handle (32) is connected to the upper portion of the sliding plate (31), a shell (34) is arranged outside the sliding plate (31), and a control component (35) is arranged inside the shell (34).

4. An orthopaedic device with a fixed maxillofacial structure according to claim 3, wherein: slide (31) are C shape structure, slide rail (33) are L shape structure, slide rail (33) are provided with two altogether, and the locating hole has been seted up to the outside of one side slide rail (33), the both ends of slide rail (33) all are provided with guard flap, the inside of casing (34) is provided with the recess, and the inside of recess is provided with direction slider (352).

5. An orthopaedic device with a fixed maxillofacial structure according to claim 3, wherein: the control assembly (35) includes and presses down depression bar (351), press down one side outer wall that depression bar (351) run through casing (34), the other end of pressing down depression bar (351) is connected with direction slider (352), the external connection of direction slider (352) has gag lever post (353), the outside of gag lever post (353) is provided with limiting plate (354), the outside of gag lever post (353) is provided with spring (355), the one end of spring (355) is connected with the outer wall of limiting plate (354), the other end of spring (355) is connected with the baffle, the center of direction slider (352) is provided with the oblique spout, and the internal connection of spout has and presses down depression bar (351), the other end of gag lever post (353) is pegged graft inside the outside locating hole of slide rail (33).

6. An orthopaedic device with a fixed maxillofacial structure according to claim 1, wherein: fixed subassembly (4) are including drive shell (41), the outside at casing (34) is connected in drive shell (41), the inside of drive shell (41) is provided with drive shaft (42), the external connection of drive shaft (42) has first toper tooth (43), the external connection of first toper tooth (43) has second toper tooth (44), the external connection of first toper tooth (43) has third toper tooth (45), the internal connection of third toper tooth (45) has lead screw (46), the external connection of lead screw (46) has nut vice (47), the external connection of nut vice (47) has anchor clamps (48).

7. An orthopaedic cosmetic device with a fixed maxillofacial structure according to claim 6, wherein: the outside of drive shaft (42) has been seted up logical groove, and leads to the center that the groove corresponds lead screw (46), two spouts have been seted up to the outside of drive shaft (42), and the inside of spout is provided with nut pair (47), the one end of drive shaft (42) is connected with rotatory handle, the other end of drive shaft (42) is connected with ball bearing, and ball bearing connects the inside at drive shell (41), be connected with ball bearing between drive shell (41) and drive shaft (42).

8. An orthopaedic cosmetic device with a fixed maxillofacial structure according to claim 6, wherein: the utility model discloses a lead screw, including lead screw (46), nut pair (47), first toper tooth (43), second toper tooth (44), third toper tooth (45), lead screw (46) and nut pair's (47) connected mode are the meshing and are connected, the external connection of nut pair (47) has anchor clamps (48), and anchor clamps (48) sliding connection is in the outside of drive shell (41), first toper tooth (43) are meshing connection with second toper tooth (44) and third toper tooth (45), second toper tooth (44) exterior structure is the same with the exterior structure of third toper tooth (45), lead screw (46), nut pair (47) and anchor clamps (48) are provided with two sets ofly altogether, the outside of lead screw (46) is provided with the bearing housing.

9. An orthopaedic cosmetic device with a fixed maxillofacial structure according to claim 6, wherein: the clamp (48) comprises an adjusting plate (481), the adjusting plate (481) is connected to the outer portion of the rotating shaft (27), the other end of the adjusting plate (481) is connected with a clamping plate (482), and a sponge cushion (483) is connected to the outer portion of the clamping plate (482).

10. An orthopaedic cosmetic device with a fixed maxillofacial structure according to claim 9, wherein: the adjustable clamp is characterized in that a plurality of groups of adjusting holes are formed in the outer portion of the adjusting plate (481), one end of the clamping plate (482) is in a step shape, the step shape is in plug-in connection with the adjusting plate (481), the other end of the clamping plate (482) is in a circular structure, a positioning hole is formed in the step shape of the clamping plate (482), and the positioning hole and the inner portion corresponding to the adjusting holes are connected with a hexagon bolt.

Technical Field

The invention relates to the technical field of medical cosmetology, in particular to a plastic cosmetology device with a fixed maxillofacial structure.

Background

The plastic beauty treatment refers to the scientific, technical and artistic medical science with the purposes of repairing and remolding the appearance and the shapes of all parts of a human body by using operations, medicines, medical instruments and other medical technical methods and further enhancing the external aesthetic feeling of the human body.

However, in the process of using the existing maxillofacial fixing device for medical beauty device, most of the devices fix the maxillofacial region by means of fixing the fixing plate through a binding band, in the fixing process, the angle deviation of the maxillofacial region of a user cannot be realized, and further in the process of performing cosmetic shaping operation, the angle rotation of the maxillofacial region of the user cannot be realized, and further in the cosmetic shaping process, an operator cannot perform the angle deviation of the maxillofacial region of the user according to the optimal operation angle, so that the difficulty of the cosmetic shaping process is improved, and meanwhile, the optimal proportion of the cosmetic shaping operation of the maxillofacial region cannot be ensured, so that the quality of the cosmetic shaping operation is reduced, and the shaping efficiency is affected, therefore, the cosmetic shaping device with the fixed maxillofacial structure needs to be designed urgently to solve the problems.

Disclosure of Invention

The invention aims to provide a plastic cosmetic device with a fixed maxillofacial structure, which aims to solve the problem that the angle of the offset of the maxillofacial part cannot be effectively adjusted after the maxillofacial part is fixed in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a cosmetic device of plastic with fixed jaw face structure, includes base, control panel and controller, the top of base is provided with rotating assembly, and the rotating assembly of telling includes control panel, the top of base is provided with the controller, the top of base is connected with electric cylinder through movable groove, electric cylinder's the other end is connected with the backup plate through movable groove, the outside of base is provided with the axis of rotation, the external connection of axis of rotation has the backup plate, the inside of backup plate is provided with the protection and fills up, the horizontal end of backup plate is connected with adjusting part, adjusting part's below is provided with fixed subassembly.

Preferably, control panel's output is connected with the receiving terminal of controller, electric cylinder is through the bolt with the activity groove and rotates the connection, the output of controller is connected with electric cylinder's receiving terminal, electric cylinder is provided with four altogether, the backup plate is the semicircle structure, the base is through axis of rotation and backup plate to be rotated and be connected, the one end of backup plate is circular-arcly, the below of backup plate is provided with two arc recesses, and the arc recess is in the both ends of axis of rotation respectively.

Preferably, the adjusting component comprises a sliding plate, a sliding rail is arranged below the sliding plate, the sliding rail is connected to the horizontal end of the backup plate, a handle is connected to the upper portion of the sliding plate, a shell is arranged outside the sliding plate, and a control component is arranged inside the shell.

Preferably, the slide is C shape structure, the slide rail is L shape structure, the slide rail is provided with two altogether, and the outside of one side slide rail has seted up the locating hole, the both ends of slide rail all are provided with guard flap, the inside of casing is provided with the recess, and the inside of recess is provided with the direction slider.

Preferably, the control assembly includes according to the depression bar, according to one side outer wall that the depression bar runs through the casing, the other end according to the depression bar is connected with the direction slider, the external connection of direction slider has the gag lever post, the outside of gag lever post is provided with the limiting plate, the outside of gag lever post is provided with the spring, the one end of spring is connected with the outer wall of limiting plate, the other end of spring is connected with the baffle, the center of direction slider is provided with the oblique spout, and the internal connection of spout has the depression bar, the other end of gag lever post is pegged graft inside the outside locating hole of slide rail.

Preferably, the fixed subassembly includes the drive shell, the outside at the casing is connected to the drive shell, the inside of drive shell is provided with the drive shaft, the external connection of drive shaft has first toper tooth, the external connection of first toper tooth has second toper tooth, the external connection of first toper tooth has third toper tooth, the internal connection of third toper tooth has the lead screw, the external connection of lead screw has the nut vice, the external connection of nut vice has anchor clamps.

Preferably, a through groove is formed in the outer portion of the driving shaft, the through groove corresponds to the center of the screw, two sliding grooves are formed in the outer portion of the driving shaft, a nut pair is arranged in each sliding groove, one end of the driving shaft is connected with a rotating handle, the other end of the driving shaft is connected with a ball bearing, the ball bearing is connected to the inner portion of the driving shell, and the ball bearing is connected between the driving shell and the driving shaft.

Preferably, the screw is in meshed connection with the nut pair in a connection mode, the nut pair is externally connected with a clamp, the clamp is slidably connected to the outside of the driving shell, the first conical tooth is in meshed connection with the second conical tooth and the third conical tooth, the external structure of the second conical tooth is the same as that of the third conical tooth, the screw, the nut pair and the clamp are provided with two sets, and a bearing sleeve is arranged outside the screw.

Preferably, the anchor clamps include the regulating plate, the outside at the axis of rotation is connected to the regulating plate, the other end of regulating plate is connected with splint, the external connection of splint has the foam-rubber cushion.

Preferably, a plurality of groups's regulation hole is seted up to the outside of regulating plate, the one end of splint is the step form, and the step form is plug-in connection with the regulating plate, the other end of splint is circular structure, the locating hole has been seted up to the step form of splint, and the locating hole has the hex bolts with the internal connection who corresponds the regulation hole.

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

1. this cosmetic device of plastic with fixed jaw face structure passes through the setting of four cylinders, can cooperate the setting of axis of rotation, the realization is adjusted the inclination of backup plate, thereby it is fixed to the head to pass through fixing device, can realize the fixing to the head, further through the regulation of angle, can realize carrying out effectual regulation to user's jaw face inclination, thereby can make the user when cosmetic in plastic, realize angle modulation through operator's control, thereby be convenient for operate jaw face edge part, the plastic efficiency is improved, simultaneously also convenient to operate different positions.

2. This cosmetic device of plastic with fixed jaw face structure passes through adjusting component and fixed subassembly mutually support, can adapt to different users and carry out the fixed of jaw face to improve the availability factor of device, the simple operation simultaneously, it is more convenient to use, can be effectively quick realization to the fixed of user's head, and then realize the fixed to jaw face, conveniently carry out the cosmetic operation of plastic, avoid the in-process of the cosmetic operation of plastic to appear the removal of jaw face.

Drawings

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

FIG. 2 is a schematic top view of the present invention;

FIG. 3 is a schematic diagram of the overall structure of the adjusting group price of the present invention;

FIG. 4 is an enlarged view of the structure A in FIG. 3 according to the present invention;

FIG. 5 is a schematic view of the overall structure of the fixing assembly of the present invention;

FIG. 6 is an enlarged view of B of FIG. 5 according to the present invention;

FIG. 7 is a schematic view of a partially exploded configuration of the conditioning assembly of the present invention;

FIG. 8 is a partial overall view of the fixing member of the present invention;

FIG. 9 is an enlarged view of the structure of C in FIG. 8 according to the present invention;

FIG. 10 is a schematic view of the entire structure of a rotating shaft according to the present invention;

fig. 11 is a schematic view of the overall structure of the electric cylinder according to the present invention.

In the figure: 1. a base; 2. a rotating assembly; 21. a control panel; 22. a controller; 23. an electric cylinder; 24. a movable groove; 25. a backup plate; 26. a protective pad; 27. a rotating shaft; 3. an adjustment assembly; 31. a slide plate; 32. a grip; 33. a slide rail; 34. a housing; 35. a control component; 351. a pressing lever; 352. a guide slider; 353. a limiting rod; 354. a limiting plate; 355. a spring; 4. a fixing assembly; 41. a drive case; 42. a drive shaft; 43. a first conical tooth; 44. a second tapered tooth; 45. a third tapered tooth; 46. a lead screw; 47. a nut pair; 48. a clamp; 481. an adjusting plate; 482. a splint; 483. a spongy cushion.

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. 1-11, an embodiment of the present invention:

a cosmetic device of plastic with structure of fixed jaw face, including the base 1, control panel 21 and controller 22, there are swivel assemblies 2 above the base 1, the swivel assembly 2 includes the control panel 21, there are control panels 21 above the base 1, there are controllers 22 above the base 1, there are electric cylinders 23 above the base 1 through the activity trough 24, the other end of the electric cylinder 23 connects with the backup plate 25 through the activity trough 24, there are axis of rotation 27 outside the base 1, the external connection of the axis of rotation 27 has backup plates 25, there are protective pads 26 inside the backup plate 25, can realize carrying on the angle regulation to the user's head through the arrangement of the structure, after fixing user's head through regulating assembly 3 and fixed assembly 4, can navigate and can through the stock in cosmetic, according to the appropriate operating angle, realize the skew to the user head, thereby improve the cosmetic comfort level of plastic, the convenience is operated the processing to the different positions of user, output control through control panel 21, further realize the control to electric cylinder 23 through controller 22, thereby realize the angle skew through electric cylinder 23's jacking, protection pad 26 adopts the silica gel cushion, improve the comfort level of user head, the horizontal end of backup plate 25 is connected with adjusting part 3, adjusting part 3's below is provided with fixed subassembly 4.

Further, control panel 21's output is connected with controller 22's receiving terminal, electric cylinder 23 is through the bolt rotation with activity groove 24 and is connected, controller 22's output is connected with electric cylinder 23's receiving terminal, two electric cylinder 23 that can the simultaneous control homonymy through controller 22's setting work, and then realize the angle skew control to backup plate 25, electric cylinder 23 is provided with four altogether, and per two divide into a set of, when one of them is a set of to carry out the jacking, corresponding another group is accomodate, thereby realize the deflection to backup plate 25, backup plate 25 is the semicircle structure, base 1 is the rotation through axis of rotation 27 and backup plate 25 and is connected, backup plate 25's one end is circular-arcly, backup plate 25's below is provided with two arc recesses, and the arc recess is in axis of rotation 27's both ends respectively, be convenient for backup plate 25's rotation.

Further, the adjusting component 3 includes the slide 31, the below of slide 31 is provided with slide rail 33, slide rail 33 connects the horizontal end at backup plate 25, the top of slide 31 is connected with handle 32, the outside of slide 31 is provided with casing 34, the inside of casing 34 is provided with control assembly 35, can realize the position control to fixed subassembly 4 through the setting of this structure, thereby reach the position according to user's temple and adjust, and then guarantee that fixed subassembly 4 is fixed to user's effective centre gripping, through the control of control assembly 35, can realize the slip of slide 31 and slide rail 33, thereby can realize the position control to slide 31, and through the setting of handle 32, can conveniently be to the further control of slide 31, handle 32 is being held through the hand, the thumb presses down the depression bar 351, can realize the removal processing to slide 31.

Further, slide 31 is C shape structure, and slide rail 33 is L shape structure, and slide rail 33 is provided with two altogether, and the locating hole has been seted up to the outside of one side slide rail 33 for cooperation gag lever post 353's grafting is fixed, realizes the spacing fixed to slide 31, and the both ends of slide rail 33 all are provided with guard flap, play certain limiting displacement, and the inside of casing 34 is provided with the recess, and the inside of recess is provided with direction slider 352.

Further, the control assembly 35 includes a pressing rod 351, the pressing rod 351 penetrates through the outer wall of one side of the housing 34, the other end of the pressing rod 351 is connected with a guiding slider 352, the outside of the guiding slider 352 is connected with a limiting rod 353, the outside of the limiting rod 353 is provided with a limiting plate 354, the outside of the limiting rod 353 is provided with a spring 355, one end of the spring 355 is connected with the outer wall of the limiting plate 354, the other end of the spring 355 is connected with a baffle plate, the center of the guiding slider 352 is provided with an inclined sliding groove, the inside of the sliding groove is connected to one side of the pressing rod 351 through a bolt, the other end of the limiting rod 353 is inserted into a positioning hole outside the sliding rail 33, pushing of the guiding slider 352 can be realized through pressing the pressing rod, further, pulling of the limiting rod 353 is realized through movement of the guiding slider 352, separation of the limiting rod 353 from the positioning hole is realized, and sliding of the sliding plate 31 and the sliding rail 33 can be realized, when the hand loosens the pressure of pressing the pole 351, through the elasticity of spring 355, can realize can realizing bouncing to gag lever post 353, further make gag lever post 353 peg graft inside the outside locating hole of slide rail 33 to the realization is to slide 31 fixed.

Further, the fixing assembly 4 includes a driving shell 41, the driving shell 41 is connected to the outside of the housing 34, a driving shaft 42 is disposed inside the driving shell 41, a first tapered tooth 43 is connected to the outside of the driving shaft 42, a second tapered tooth 44 is connected to the outside of the first tapered tooth 43, a third tapered tooth 45 is connected to the outside of the first tapered tooth 43, a lead screw 46 is connected to the inside of the third tapered tooth 45, a nut pair 47 is connected to the outside of the lead screw 46, and a clamp 48 is connected to the outside of the nut pair 47, by the arrangement of the structure, the head to be used can be clamped and fixed, the driving shaft 42 is rotated to drive the first tapered tooth 43 to rotate, further rotation of the second tapered tooth 44 and the third tapered tooth 45 is realized, rotation of the lead screw 46 is respectively realized by rotation of the second tapered tooth 44 and the third tapered tooth 45, further position adjustment of the clamp 48 is realized by movement of the nut pair 47 outside the lead screw 46, the head of a user can be clamped, the screw rod 46 in the second conical teeth 44 and the third conical teeth 45 are in opposite thread shapes, and the nut pairs 47 on the two sides can be guaranteed to move towards the middle or the outside simultaneously.

Further, logical groove has been seted up to drive shaft 42's outside, and lead to the center that the groove corresponds lead screw 46, two spouts have been seted up to drive shaft 42's outside, and the inside of spout is provided with nut pair 47, the one end and the lead screw 46 of nut pair 47 mesh, the other end and the drive shell 41 of nut pair 47 slide, the one end of drive shaft 42 is connected with rotatory handle, conveniently rotate drive shaft 42, the other end of drive shaft 42 is connected with ball bearing, and ball bearing connects the inside at drive shell 41, be connected with ball bearing between drive shell 41 and the drive shaft 42 and be used for the auxiliary stay of drive shaft 42, guarantee drive shaft 42's rotation.

Further, the lead screw 46 is connected with the nut pair 47 in a meshing manner, so that the nut pair 47 can move by rotation of the lead screw 46, a clamp 48 is connected to the outside of the nut pair 47, the clamp 48 is slidably connected to the outside of the driving shell 41, the first conical teeth 43 are connected with the second conical teeth 44 and the third conical teeth 45 in a meshing manner, the external structure of the second conical teeth 44 is the same as that of the third conical teeth 45, two sets of the lead screw 46, the nut pair 47 and the clamp 48 are arranged, a bearing sleeve is arranged on the outside of the lead screw 46, and the bearing sleeve is arranged on two sides of the lead screw 46 and used for auxiliary support when the lead screw 46 rotates.

Further, anchor clamps 48 includes regulating plate 481, regulating plate 481 is connected in the outside of axis of rotation 27, regulating plate 481's the other end is connected with splint 482, splint 482's external connection has foam-rubber cushion 483, setting through this structure, realize the head centre gripping to the user, and can realize the altitude mixture control from top to bottom, guarantee the accurate nature of centre gripping, through the regulation of splint 482 with regulating plate 481 mounted position, can realize the regulation of splint 482 centre gripping height, and can improve the comfort level of user's head centre gripping through the setting of foam-rubber cushion 483, avoid appearing pain.

Further, a plurality of groups of adjusting holes are formed in the outer portion of the adjusting plate 481, one end of the clamping plate 482 is in a step shape and is in plug-in connection with the adjusting plate 481, the other end of the clamping plate 482 is in a circular structure, positioning holes are formed in the step shape of the clamping plate 482, and the positioning holes and the corresponding adjusting holes are connected with hexagonal bolts.

The working principle is as follows: when the sliding plate 31 is used, a user firstly lays the head in the backup plate 25, the position of the sliding plate 31 is further adjusted, the handle 32 is held by the hand, the pressing rod 351 is further pressed by the thumb, the guide sliding block 352 can be pushed, the limiting rod 353 is pulled through the movement of the guide sliding block 352, the limiting rod 353 is separated from the positioning hole, the sliding between the sliding plate 31 and the sliding rail 33 can be realized, the pressing of the pressing rod 351 is released after the sliding plate 31 is moved to a proper position, the limiting rod 353 can be bounced through the elasticity of the spring 355, the limiting rod 353 is further inserted into the positioning hole outside the sliding rail 33, and the sliding plate 31 is fixed.

Further through rotating the drive shaft 42, can drive first toper tooth 43 and rotate, further realize the rotation to second toper tooth 44 and third toper tooth 45, realize respectively the rotation to lead screw 46 through the rotation of second toper tooth 44 and third toper tooth 45, further realize the position control to adjusting plate 481 through the removal of the outside nut pair 47 of lead screw 46 to the centre gripping of user's head is fixed through splint 482 realization.

In the operation process, the backup plate 25 can be turned and adjusted through the control and adjustment of the electric cylinder 23, so that the head can be rotated according to different operation positions of the jaw face in the shaping process, and the shaping operation of an operator is facilitated.

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.