阅读说明：本技术 一种职业卫生检测自动进样管取封塞的装置 (Occupational health detects device that automatic sampling pipe got stopcock ) 是由 向蓉燕 于 2020-12-09 设计创作，主要内容包括：本发明公开了一种职业卫生检测自动进样管取封塞的装置,包括顺序送料组件、装置防护罩壳、送管滑道、送管件一、送管件二、送管驱动组件、取塞组件和出管组件,所述装置防护罩壳设于送管滑道上,所述顺序送料组件一侧连通设于送管滑道上,所述送管件一和送管件二滑动设于送管滑道中,所述送管驱动组件设于送管滑道底部且两端分别滑动贯穿送管滑道设于送管件一和送管件二上,所述取塞组件设于装置防护罩壳上且位于送管滑道的上方,所述出管组件连通设于送管滑道的一侧。本发明涉及职业卫生检测技术领域,具体是提供了一种职业卫生检测自动进样管取封塞的装置,实现进样管的顺序自动化取塞工作,并对拔取后的塞子进行收集。(The invention discloses an automatic sampling tube plug taking and sealing device for occupational health detection, which comprises a sequential feeding assembly, a protective cover, a tube conveying slideway, a tube conveying member I, a tube conveying member II, a tube conveying driving assembly, a plug taking assembly and a tube outlet assembly, wherein the protective cover is arranged on the tube conveying slideway, one side of the sequential feeding assembly is communicated with the tube conveying slideway, the tube conveying member I and the tube conveying member II are arranged in the tube conveying slideway in a sliding manner, the tube conveying driving assembly is arranged at the bottom of the tube conveying slideway, two ends of the tube conveying driving assembly respectively penetrate through the tube conveying slideway in a sliding manner and are arranged on the tube conveying member I and the tube conveying member II, the plug taking assembly is arranged on the protective cover and is positioned above the tube conveying slideway, and the tube. The invention relates to the technical field of occupational health detection, and particularly provides an automatic sampling tube plug taking and sealing device for occupational health detection, which is used for realizing sequential automatic plug taking work of sampling tubes and collecting pulled plugs.)

1. The utility model provides a occupational health detects device that automatic sampling pipe got stopcock which characterized in that: the automatic pipe feeding device comprises a sequential feeding assembly, a protective device casing, a pipe conveying slide way, a first pipe conveying piece, a second pipe conveying piece, a pipe conveying driving assembly, a plug taking assembly and a pipe outlet assembly, wherein the protective device casing is arranged on the pipe conveying slide way, one side of the sequential feeding assembly is communicated and arranged on the pipe conveying slide way, the first pipe conveying piece and the second pipe conveying piece are arranged in the pipe conveying slide way in a sliding manner, the pipe conveying driving assembly is arranged at the bottom of the pipe conveying slide way, two ends of the pipe conveying driving assembly respectively penetrate through the pipe conveying slide way and are arranged on the first pipe conveying piece and the second pipe conveying piece, the plug taking assembly is arranged on the protective device casing and is positioned above the pipe conveying slide way, the pipe outlet assembly is communicated and arranged on one side of the pipe conveying slide way, the sequential feeding assembly comprises an annular protective cover, a sequential feeding disc and a connecting, the sequence feeding plate is rotatably arranged in the annular protective cover, arc-shaped placing grooves are uniformly formed in the side wall of the sequence feeding plate at intervals in the circumferential direction, a motor box is arranged on one side of the connecting slide way, a first motor is arranged in the motor box, a cross stirring piece is rotatably arranged on the motor box and is arranged on an output shaft of the first motor.

2. The occupational health testing autosampler stoppering device of claim 1, wherein: the pipe conveying driving assembly comprises a sliding driving frame, a driving gear, a transmission gear, a motor II, a connecting rod I and a connecting rod II, a sliding through groove I and a sliding through groove II are arranged at the bottom of the pipe conveying slide way, the sliding driving frame is arranged at the bottom of the pipe conveying slide way in a sliding manner, one end of the connecting rod is arranged at one end of the sliding driving frame, the other end of the connecting rod is arranged on the pipe conveying piece I in a sliding and penetrating manner, one end of the connecting rod is arranged at the other end of the sliding driving frame, the other end of the connecting rod is arranged on the pipe conveying piece II in a sliding and penetrating manner, meshing teeth are arranged on two opposite side walls of the sliding driving frame, the driving gear and the transmission gear are rotatably arranged at the bottom of the pipe conveying slide way and are in meshing connection, the driving gear and the transmission gear are positioned in, and the second motor is arranged in the pipe conveying slide way and is connected with the driving gear.

3. The occupational health testing autosampler stoppering device according to claim 2, wherein: the opposite ends of the first pipe conveying piece and the second pipe conveying piece are respectively provided with an internal groove, a first telescopic rod is arranged in the internal grooves, and a stable clamping piece is arranged on the first telescopic rod.

4. The occupational health testing autosampler stoppering device of claim 1, wherein: get the stopper subassembly and include displacement regulation lead screw, motor three, remove seat, telescopic link two, U type frame, centre gripping drive lead screw, motor four, get the stopper and press from both sides one and get the stopper and press from both sides two, displacement regulation lead screw is rotatory to be located on the device protective housing roof, motor three is located in the device protective housing and is located on the displacement regulation lead screw, remove the seat and slide and locate on the device protective housing and cup joint with the displacement regulation lead screw through the screw thread, telescopic link two is located on removing the seat, U type frame is located on the telescopic link two, centre gripping drive lead screw is rotatory to be located on the U type frame, motor four is located on the U type frame and is connected with centre gripping drive lead screw, get the stopper press from both sides one and get the stopper and press from both sides two through the screw thread cup joint locate on the centre gripping drive lead screw and.

5. The occupational health testing autosampler tube stoppering device of claim 3, wherein: the exit tube subassembly includes exit tube protecting crust, telescopic link three and pushes away the piece, one side that the tube conveying slide was located to the exit tube protecting crust intercommunication, tube conveying slide opposite side is equipped with out the mouth of pipe, it sets up with the exit tube protecting crust relatively to go out the mouth of pipe, telescopic link three is located in the exit tube protecting crust, push away the piece and locate telescopic link three on.

6. The occupational health testing autosampler tube stoppering device of claim 4, wherein: the device is characterized in that a collecting box is arranged on one side of the protective housing, a plug discharging port is formed in the side wall of the protective housing, the plug discharging port is communicated with the collecting box, an inclined collecting plate is arranged on the side wall of the protective housing, and the inclined collecting plate is located below the plug discharging port.

7. The occupational health testing autosampler tube stoppering device of claim 5, wherein: the outlet pipe mouth is provided with a pipe connecting groove.

8. The occupational health testing autosampler tube stoppering device of claim 5, wherein: the width of the connecting slide way and the tube conveying slide way is equal to the diameter of the sampling tube.

Technical Field

The invention relates to the technical field of occupational health detection, in particular to a device for automatically taking a sampling tube and plugging in occupational health detection.

Background

Need use the sampling tube to collect and detect the sample in professional health detection to fill in the sampling tube with the stopper and protect the sample, need take out the stopper in later stage sample testing process, traditional plug mode of getting is extracted the stopper for using the pliers manual work, and the process is wasted time and energy, is detecting time measuring in the face of big batch style, and efficiency is extremely low, and stabs the staff easily at the pull-out in-process.

Disclosure of Invention

Aiming at the situation, in order to overcome the defects of the prior art, the invention provides the device for automatically taking the plug of the sampling tube for the occupational health detection, so that the sequential automatic plug taking work of the sampling tube is realized, and the pulled plug is collected.

The technical scheme adopted by the invention is as follows: the invention relates to an automatic sampling tube plug taking and sealing device for occupational health detection, which comprises a sequential feeding assembly, a protective cover, a tube conveying slideway, a tube conveying piece I, a tube conveying piece II, a tube conveying driving assembly, a plug taking assembly and a tube outlet assembly, wherein the protective cover is arranged on the tube conveying slideway, one side of the sequential feeding assembly is communicated with the tube conveying slideway, the tube conveying piece I and the tube conveying piece II are arranged in the tube conveying slideway in a sliding manner, the tube conveying driving assembly is arranged at the bottom of the tube conveying slideway, two ends of the tube conveying driving assembly respectively penetrate through the tube conveying slideway and are arranged on the tube conveying piece I and the tube conveying piece II in a sliding manner, the plug taking assembly is arranged on the protective cover and is positioned above the tube conveying slideway, the tube outlet assembly is communicated with one side of the tube conveying slideway, the sequential feeding assembly comprises an annular protective cover, annular protection casing intercommunication is located on connecting the slide, connect the slide and be located the tangential direction of annular protection casing, the order pay-off dish is rotatory to be located in the annular protection casing, order pay-off dish lateral wall is equipped with the arc along the circumferencial direction on even interval and places the recess, during the use, places the recess through inserting the sample pipe in the arc, utilizes the order pay-off dish to rotate and sends the sample pipe into and connect the slide, it is equipped with the motor case to connect slide one side, be equipped with motor one in the motor case, the rotatory cross that is equipped with on the motor case dials the piece, the cross dials the piece and locates on the output shaft of motor one, utilizes the cross to dial the sample pipe order that will get into in connecting the slide to send the pipe slide in, conveniently dials the work of getting the stopper to the sample.

Further, the pipe conveying driving assembly comprises a sliding driving frame, a driving gear, a transmission gear, a motor II, a connecting rod I and a connecting rod II, a sliding through groove I and a sliding through groove II are formed in the bottom of the pipe conveying slide way, the sliding driving frame is slidably arranged at the bottom of the pipe conveying slide way, one end of the connecting rod I is arranged at one end of the sliding driving frame, the other end of the connecting rod II slidably penetrates through the sliding through groove I and is arranged on the pipe conveying piece I, one end of the connecting rod II is arranged at the other end of the sliding driving frame, the other end of the connecting rod II slidably penetrates through the sliding through groove II and is arranged on the pipe conveying piece II, meshing teeth are arranged on two opposite side walls of the sliding driving frame, the driving gear and the transmission gear are rotatably arranged at the bottom of the pipe conveying slide way, the transmission gear is meshed with the meshing teeth on the other side of the sliding driving frame, the motor II is arranged in the pipe conveying slide and is connected with the driving gear, the cross stirring piece is used for stirring a sample inlet pipe in the pipe conveying slide to be conveyed to a position between the pipe conveying piece I and the pipe conveying piece II, then the motor II is used for rotating to drive the sliding driving frame to move through gear tooth transmission, and the sample inlet pipe is moved to the position below the plug taking assembly through the pipe conveying piece I and the pipe conveying piece II.

Further, send pipe fitting one and send two looks remote ends of pipe fitting all to be equipped with built-in groove, be equipped with telescopic link one in the built-in groove, be equipped with stable holder on the telescopic link one, send pipe fitting one and send pipe fitting two to remove the sampling pipe to the below of getting the stopper subassembly after, utilize telescopic link one to extend and drive two sets of stable holders and be close to each other and stabilize the centre gripping with the sampling pipe, make things convenient for follow-up plug pulling operation.

Further, the plug taking assembly comprises a displacement adjusting screw rod, a third motor, a moving seat, a second telescopic rod, a U-shaped frame, a clamping driving screw rod, a fourth motor, a first plug taking clamp and a second plug taking clamp, the displacement adjusting screw rod is rotatably arranged on the top wall of a protective housing of the device, the third motor is arranged in the protective housing of the device and is arranged on the displacement adjusting screw rod, the moving seat is slidably arranged on the protective housing of the device and is sleeved with the displacement adjusting screw rod through threads, the second telescopic rod is arranged on the moving seat, the U-shaped frame is arranged on the second telescopic rod, the clamping driving screw rod is rotatably arranged on the U-shaped frame, the fourth motor is arranged on the U-shaped frame and is connected with the clamping driving screw rod, the first plug taking clamp and the second plug taking clamp are sleeved on the clamping driving screw rod through threads and are slidably arranged on the U-shaped frame, and the first plug taking clamp and the second plug taking clamp, when the sampling tube is transferred to the lower part of the first plug taking clamp and the lower part of the second plug taking clamp by the first tube conveying piece and the second tube conveying piece, the first plug taking clamp and the second plug taking clamp are driven to move downwards into the sampling tube by the extension of the second telescopic rod and are contacted with the plug, then the first plug taking clamp and the second plug taking clamp are driven to mutually approach by the rotation of the fourth motor to clamp the plug, and the plug is extracted by the contraction of the second telescopic rod.

Further, the exit tube subassembly includes exit tube protecting crust, three telescopic links and pushes away the piece, one side of sending the pipe slide is located to the exit tube protecting crust intercommunication, send the pipe slide opposite side to be equipped with out the mouth of pipe, it sets up with the exit tube protecting crust relatively to go out the mouth of pipe, the exit tube protecting crust is located to the telescopic link three, push away the piece and locate on the telescopic link three, after the stopper was extracted in advancing the appearance pipe, a shrink of telescopic link will advance the appearance pipe pine and take off, then three extensions of telescopic link utilize to push away the piece and will advance the appearance pipe and push out the mouth of pipe.

Furthermore, a collecting box is arranged on one side of the protective cover shell of the device, a plug discharging port is formed in the side wall of the protective cover shell of the device and communicated with the collecting box, an inclined collecting plate is arranged on the side wall of the protective cover shell of the device and located below the plug discharging port, a plug taking clamp I and a plug taking clamp II take out the plug and then move to the upper portion of the inclined collecting plate to release the plug, and the plug slides through the plug discharging port along the inclined collecting plate to enter the collecting box.

Further, the outlet pipe mouth is provided with a pipe receiving groove.

Further, the width of the connecting slide and the tube conveying slide is equal to the diameter of the sampling tube.

The invention with the structure has the following beneficial effects: this scheme utilization order pay-off subassembly will advance the appearance pipe in order to send into one by one send the pipe chute to the utilization send pipe fitting one, send pipe fitting two to move into the appearance pipe to get and fill up the automatic work of getting of accomplishing in subassembly below, and will get the appearance pipe after filling up and the stopper separately deposits, degree of automation is high, convenient to use, greatly improves work efficiency, liberation labour.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic view of the overall structure of an automatic sampling tube plugging device for occupational health detection according to the present invention;

FIG. 2 is a schematic structural diagram of a sequential feeding assembly of the device for sampling and plugging the automatic sampling tube for occupational health detection according to the invention;

FIG. 3 is a schematic structural diagram of a tube feeding driving assembly of an automatic sampling tube plugging device for occupational health testing according to the present invention;

fig. 4 is a schematic structural diagram of a plug taking assembly of the automatic sampling tube plug taking device for occupational health detection.

Wherein, 1, a sequential feeding component, 2, a device protective housing, 3, a tube feeding slideway, 4, a tube feeding component I, 5, a tube feeding component II, 6, a tube feeding driving component, 7, a plug taking component, 8, a tube outlet component, 9, an annular protective cover, 10, a sequential feeding disc, 11, a connecting slideway, 12, a motor box, 13, a cross toggle piece, 14, an arc placing groove, 15, a sliding driving frame, 16, a driving gear, 17, a transmission gear, 18, a motor II, 19, a connecting rod I, 20, a connecting rod II, 21, a sliding through groove I, 22, a sliding through groove II, 23, an internal groove, 24, a telescopic rod I, 25, a stable clamping component, 26, a displacement adjusting screw rod, 27, a motor III, 28, a moving seat, 29, a telescopic rod II, 30, a U-shaped frame, 31, a clamping driving screw rod, 32, a motor IV, 33, a plug taking clamp I, 34, a plug taking clamp II, 35 and a tube outlet protective housing, 36. the device comprises a pushing piece, 37, a pipe outlet, 38, a collecting box, 39, a plug discharging port, 40, an inclined collecting plate, 41 and a pipe connecting groove.

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.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

As shown in figures 1-4, the automatic sampling tube plug taking device for occupational health detection comprises a sequential feeding assembly 1, a device protective housing 2, a tube conveying slideway 3, a tube conveying piece I4, a tube conveying piece II 5, a tube conveying driving assembly 6, a plug taking assembly 7 and a tube outlet assembly 8, wherein the device protective housing 2 is arranged on the tube conveying slideway 3, one side of the sequential feeding assembly 1 is communicated with the tube conveying slideway 3, the tube conveying piece I4 and the tube conveying piece II 5 are slidably arranged in the tube conveying slideway 3, the tube conveying driving assembly 6 is arranged at the bottom of the tube conveying slideway 3, two ends of the tube conveying driving assembly respectively penetrate through the tube conveying slideway 3 and are arranged on the tube conveying piece I4 and the tube conveying piece II 5, the plug taking assembly 7 is arranged on the device protective housing 2 and is positioned above the tube conveying slideway 3, the tube outlet assembly 8 is communicated with one side of the tube conveying slideway 3, and the sequential feeding assembly 1, The automatic feeding device comprises a sequential feeding disc 10 and a connecting slide 11, wherein the connecting slide 11 is communicated with and arranged on a pipe conveying slide 3, an annular protective cover 9 is communicated with and arranged on the connecting slide 11, the connecting slide 11 is positioned in the tangential direction of the annular protective cover 9, the sequential feeding disc 10 is rotatably arranged in the annular protective cover 9, arc-shaped placing grooves 14 are uniformly formed in the side wall of the sequential feeding disc 10 along the circumferential direction at intervals, a motor box 12 is arranged on one side of the connecting slide 11, a first motor (not shown in the figure) is arranged in the motor box 12, a cross stirring piece 13 is rotatably arranged on the motor box 12, and the cross stirring piece 13 is arranged on an output shaft of the first motor.

The pipe conveying driving assembly 6 comprises a sliding driving frame 15, a driving gear 16, a transmission gear 17, a motor II 18, a connecting rod I19 and a connecting rod II 20, a sliding through groove I21 and a sliding through groove II 22 are formed in the bottom of the pipe conveying slide way 3, the sliding driving frame 15 is arranged at the bottom of the pipe conveying slide way 3 in a sliding mode, one end of the connecting rod I19 is arranged at one end of the sliding driving frame 15, the other end of the connecting rod II 20 penetrates through the sliding through groove I21 in a sliding mode and is arranged on the pipe conveying piece I4, one end of the connecting rod II 20 is arranged at the other end of the sliding driving frame 15, the other end of the connecting rod II 20 penetrates through the sliding through groove II 22 in a sliding mode and is arranged on the pipe conveying piece II 5, meshing teeth are arranged on two opposite side walls of the sliding driving frame 15, the driving gear 16 and the transmission gear, the driving gear 16 is meshed with meshing teeth on one side of the sliding driving frame 15, the transmission gear 17 is meshed with meshing teeth on the other side of the sliding driving frame 15, the motor II 18 is arranged in the pipe conveying slide way 3 and is connected with the driving gear 16, opposite ends of the pipe conveying piece I4 and the pipe conveying piece II 5 are respectively provided with an internal groove 23, a telescopic rod I24 is arranged in the internal groove 23, a stable clamping piece 25 is arranged on the telescopic rod I24, the plug taking assembly 7 comprises a displacement adjusting screw rod 26, a motor III 27, a moving seat 28, a telescopic rod II 29, a U-shaped frame 30, a clamping driving screw rod 31, a motor IV 32, a plug taking clamp I33 and a plug taking clamp II 34, the displacement adjusting screw rod 26 is rotatably arranged on the top wall of the protective cover 2 of the device, the motor III 27 is arranged in the protective cover 2 of the device and arranged on the displacement adjusting screw rod 26, the moving seat 28 is slidably arranged on the protective cover 2 of the, the second telescopic rod 29 is arranged on the moving seat 28, the U-shaped frame 30 is arranged on the second telescopic rod 29, the clamping driving screw rod 31 is rotatably arranged on the U-shaped frame 30, the fourth motor 32 is arranged on the U-shaped frame 30 and connected with the clamping driving screw rod 31, the first plug taking clamp 33 and the second plug taking clamp 34 are sleeved on the clamping driving screw rod 31 through threads and are arranged on the U-shaped frame 30 in a sliding manner, the outlet pipe assembly 8 comprises an outlet pipe protective shell 35, a third telescopic rod (not shown in the figure) and a pushing piece 36, the outlet pipe protective shell 35 is communicated and arranged on one side of the pipe conveying slide 3, an outlet pipe opening 37 is arranged on the other side of the pipe conveying slide 3, the outlet pipe opening 37 and the outlet pipe protective shell 35 are arranged oppositely, the third telescopic rod is arranged in the outlet pipe protective shell 35, the pushing piece 36 is arranged on the third telescopic rod, a collecting box 38 is arranged on one side of the device protective shell 2, and, the plug discharging port 39 is communicated with the collecting box 38, the side wall of the device protective housing 2 is provided with an inclined collecting plate 40, the inclined collecting plate 40 is positioned below the plug discharging port 39, the pipe outlet port 37 is provided with a pipe receiving groove 41, and the width of the connecting slide 11 and the pipe conveying slide 3 is equal to the diameter of the sampling pipe.

When the sampling tube inserting device is used specifically, the sampling tube is inserted into the arc-shaped placing groove 14, the sequential feeding plate 10 rotates to feed the sampling tube into the connecting slide way 11, the starting motor drives the cross stirring piece 13 to rotate by 90 degrees to stir the sampling tube entering the connecting slide way 11 into the tube feeding slide way 3 sequentially, the sampling tube is fed between the tube feeding piece I4 and the tube feeding piece II 5, then the starting motor II 18 rotates to drive the sliding driving frame 15 to move through gear transmission, the sampling tube is moved to the position below the plug taking assembly 7 through the tube feeding piece I4 and the tube feeding piece II 5, at the moment, the first telescopic rod 24 extends to drive the two groups of stable clamping pieces 25 to approach each other to stably clamp the sampling tube, the first plug taking clamp 33 and the second plug taking clamp 34 are positioned at one end of the tube feeding slide way 3 in an initial state, when the sampling tube is transferred to the first plug taking clamp 33 and the second plug taking clamp 34 by the tube feeding piece I4 and the tube feeding piece II 5, the second telescopic rod 29 is extended to drive the first plug taking clamp 33 and the second plug taking clamp 34 to move downwards into the sampling tube and contact with the plug, then the fourth starting motor 32 rotates to drive the first plug taking clamp 33 and the second plug taking clamp 34 to approach each other to clamp the plug, the second telescopic rod 29 is contracted to pull out the plug, then the third starting motor 27 drives the displacement adjusting screw 26 to rotate to drive the plug to move to the upper part of the inclined collecting plate 40, then the fourth starting motor 32 rotates again to drive the first plug taking clamp 33 and the second plug taking clamp 34 to move away from the plug to be loosened, the plug slides along the inclined collecting plate 40 through the plug discharging port 39 to enter the collecting box 38, meanwhile, the first telescopic rod 24 is contracted to loosen the sampling tube after plugging, then the third telescopic rod is extended to push the sampling tube out of the tube port 37 to the tube connecting groove 41 by using the pushing piece 36, so that a worker can conveniently take out the sampling tube, then the second starting motor 18 again drives the first pipe feeding piece 4 and the second pipe, meanwhile, the third starting motor 27 rotates to reset the first plug taking clamp 33 and the second plug taking clamp 34, and the next operation is convenient to perform.

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.

While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

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