阅读说明：本技术 一种健美操运动员身体协调性训练装置及系统 (Aerobics exercises sportsman's health harmony trainer and system ) 是由 祁鸿雁 钟华 王亮 于 2021-05-17 设计创作，主要内容包括：本发明公开了一种健美操运动员身体协调性训练装置及系统,包括训练组件、调节组件和防摔组件；所述调节组件固定安装于所述训练组件上,所述防摔组件固定安装于所述调节组件上；所述训练组件包括套环、固定板、第一连杆和第二连杆,四个所述套环均与所述固定板固定连接,所述固定板的一端转动连接有调节杆,所述调节杆的一侧开设有螺纹孔,所述调节杆通过所述螺纹孔螺纹连接有螺杆,所述螺杆与另一个所述固定板固定连接。本发明的训练组件可以训练健美操运动员身体协调性,调节组件用于调节训练组件的高度,适合不同身高的使用者,训练过程中,防摔组件用于防止使用者摔倒受伤,提高安全性能,使用方便简单。(The invention discloses a body coordination training device and a body coordination training system for aerobics athletes, which comprise a training component, an adjusting component and an anti-falling component; the adjusting assembly is fixedly arranged on the training assembly, and the anti-falling assembly is fixedly arranged on the adjusting assembly; the training subassembly includes the lantern ring, fixed plate, first connecting rod and second connecting rod, four the lantern ring all with fixed plate fixed connection, the one end of fixed plate is rotated and is connected with the regulation pole, threaded hole has been seted up to one side of adjusting the pole, adjust the pole and pass through threaded hole threaded connection has the screw rod, screw rod and another fixed plate fixed connection. The training component can train the body coordination of the aerobics athletes, the adjusting component is used for adjusting the height of the training component, the training component is suitable for users with different heights, the falling-preventing component is used for preventing the users from falling down and being injured in the training process, the safety performance is improved, and the training component is convenient and simple to use.)

1. A device for training the physical coordination of a aerobics athlete, comprising: the training component (1), the adjusting component (2) and the anti-falling component (3);

the adjusting component (2) is fixedly arranged on the training component (1), and the anti-falling component (3) is fixedly arranged on the adjusting component (2);

training subassembly (1) includes four lantern rings (13), fixed plate (14), first connecting rod (18) and second connecting rod (19), four lantern ring (13) all with fixed plate (14) fixed connection, the one end of fixed plate (14) is rotated and is connected with regulation pole (17), threaded hole (171) have been seted up to one side of adjusting pole (17), adjust pole (17) through threaded hole (171) threaded connection has screw rod (172), screw rod (172) and another fixed plate (14) fixed connection, slide opening (181) have been seted up to one side of first connecting rod (18), the one end fixedly connected with slide bar (191) of second connecting rod (19), slide bar (191) slide insert the inside of slide opening (181).

2. A bodybuilder's body coordination training device according to claim 1, wherein: three fixed orificess (15) of arranging in proper order are seted up to one side of fixed plate (14), one side of fixed plate (14) is passed through fixed orificess (15) threaded connection has fixing bolt (16), screw has all been seted up to first connecting rod (18) with the one end of second connecting rod (19), fixing bolt (16) one end with the screw phase-match.

3. A bodybuilder's body coordination training device according to claim 1, wherein: the training assembly (1) further comprises a base frame (11) and a sliding block (12), wherein the sliding block (12) is connected to the top of the base frame (11) in a sliding mode.

4. A bodybuilder exerciser body coordination training device according to claim 3, wherein: adjusting part (2) include roof-rack (21), first motor (22), first lead screw (23) and guide bar (24), first lead screw (23) with guide bar (24) rotate connect in the top of slider (12), the top of guide bar (24) rotate connect in the bottom of roof-rack (21), the top of first lead screw (23) is run through roof-rack (21), first motor (22) pass through bolt fixed connection in the top of roof-rack (21), the output shaft of first motor (22) weld in the one end of first lead screw (23).

5. A bodybuilder exerciser body coordination training device according to claim 4, wherein: fixedly connected with action wheel (25) on first lead screw (23), fixedly connected with follows driving wheel (26) on guide bar (24), action wheel (25) pass through belt (27) with follow driving wheel (26) transmission is connected.

6. A bodybuilder exerciser body coordination training device according to claim 4, wherein: the anti-falling assembly (3) comprises a side plate (31), a first holding rod (36) and a second holding rod (37), the first screw rod (23) is rotatably connected with the guide rod (24) and the side plate (31), the side plate (31) is slidably connected with the second holding rod (37), the first holding rod (36) is slidably connected with the other side plate (31), and one end of the first holding rod (36) is fixedly connected with an extension rod inserted into the second holding rod (37).

7. A bodybuilder exerciser body coordination training device according to claim 6, wherein: one of the side plates (31) is fixedly connected with a support (32), the support (32) is connected with a second lead screw (34) in a rotating mode, the second lead screw (34) is connected with a sliding ring (35) in a threaded mode, one end of the sliding ring (35) penetrates through the side plates (31) and is fixedly connected with the first holding rod (36), the support (32) is provided with a second motor (33), an output shaft of the second motor (33) penetrates through the support (32) and is fixedly connected with the second lead screw (34), the first holding rod (36) and the second holding rod (37) are both sleeved with sliding leather sleeves (361), the first holding rod (36) and the second holding rod (37) are both fixedly connected with induction stress pieces (39), and the induction stress pieces (39) are provided with ring induction contacts.

8. A bodybuilder's body coordination training device according to claim 7, wherein: an operation button plate (38) is arranged on the second holding rod (37).

9. A bodybuilder's body coordination training device according to claim 1, wherein: the outer side of the adjusting rod (17) is bonded with an anti-slip sleeve.

10. A aerobics exercises sportsman's health coordination training system which characterized in that: the device for training the body coordination of the aerobics exercises athletes as claimed in any one of claims 1-9, further comprising a self-detection module for the height of the user and an induction detection module, wherein the self-detection module for the height of the user comprises a height detection sensor and a DSP controller, the height detection sensor is mounted on a top frame (21), the height detection sensor is used for detecting the height of the user, the signal output end of the height detection sensor is electrically connected with the signal input end of the DSP controller, the control output end of the DSP controller is electrically connected with the electric control end of a first motor (22) in an adjusting component (2), the first motor (22) is set as a forward and reverse rotation stepping motor, an initialization module is further arranged in the induction detection module, the induction detection module is used for detecting the change of the potential difference, and the induction detection module is in signal connection with the PLC controller, the PLC is electrically connected with the second motor (33).

Technical Field

The invention relates to the technical field of sports, in particular to a body coordination training device and a body coordination training system for aerobics athletes.

Background

The aerobics exercises are sports which are popular with the masses and widely popularized and integrate gymnastics, dancing, music, body building and entertainment. The movements of upper and lower limbs, trunk, head and neck and foot stepping in disco dance, jazz dance and thunderbolt dance, especially the hip movement, are absorbed in a large amount in the aerobics exercises, so that the vitality of the aerobics exercises is increased, the accumulation of fat at the hip and the abdomen is reduced, and the coordination and the flexibility of the movement are improved.

The body coordination of the aerobics athletes is very important, some tools for training the body coordination are simple, and the adjustability is weak, so that the aerobics athletes body coordination training device and the aerobics athletes body coordination training system are provided.

Disclosure of Invention

The invention aims to provide a device and a system for training the body coordination of a aerobics player, which aim to solve the problems in the prior art.

In order to achieve the purpose, the invention provides the following technical scheme: a aerobics athlete body coordination training device, comprising: the training assembly, the adjusting assembly and the anti-falling assembly;

the adjusting assembly is fixedly arranged on the training assembly, and the anti-falling assembly is fixedly arranged on the adjusting assembly;

the training subassembly includes four lantern rings, fixed plate, first connecting rod and second connecting rod, four the lantern ring all with fixed plate fixed connection, the one end of fixed plate is rotated and is connected with the regulation pole, the threaded hole has been seted up to one side of adjusting the pole, it has the screw rod to adjust the pole through threaded hole threaded connection has, the screw rod with another fixed plate fixed connection, the slide opening has been seted up to one side of first connecting rod, the one end fixedly connected with slide bar of second connecting rod, the slide bar slides and inserts the inside of slide opening.

Through adopting above-mentioned technical scheme, the training subassembly is used for training aerobics exercises sportsman health harmony, and the regulating assembly is used for adjusting the height of training subassembly, and the training in-process prevents falling the subassembly and is used for preventing that the user from falling down the injury.

Preferably, three fixing holes which are arranged in sequence are formed in one side of the fixing plate, a fixing bolt is connected to one side of the fixing plate through the fixing holes in a threaded mode, screw holes are formed in one ends of the first connecting rod and the second connecting rod, and one end of the fixing bolt is matched with the screw holes.

Through adopting above-mentioned technical scheme, insert inside relative fixed orifices respectively two sets of relative fixing bolt to through fixed first connecting rod of screw and second connecting rod, because all be provided with three fixed orifices on every fixed plate, when fixing bolt inserted different fixed orificess, can adjust the clearance between two sets of first connecting rods.

Preferably, the training assembly further comprises a base frame and a slider, wherein the slider is slidably connected to the top of the base frame.

Through adopting above-mentioned technical scheme, the chassis is used for supporting whole trainer.

Preferably, the adjusting assembly comprises a top frame, a first motor, a first lead screw and a guide rod, the first lead screw and the guide rod are rotatably connected to the top of the sliding block, the top of the guide rod is rotatably connected to the bottom of the top frame, the top of the first lead screw penetrates through the top frame, the first motor is fixedly connected to the top of the top frame through a bolt, and an output shaft of the first motor is welded to one end of the first lead screw.

Through adopting above-mentioned technical scheme, first motor drives first lead screw and rotates to through belt transmission guide bar, guide bar and lantern ring threaded connection, first lead screw and lantern ring threaded connection, therefore can adjust the height of the lantern ring, and then adjust the height of fixed plate, first connecting rod and second connecting rod.

Preferably, a driving wheel is fixedly connected to the first screw rod, a driven wheel is fixedly connected to the guide rod, and the driving wheel is in transmission connection with the driven wheel through a belt.

Through adopting above-mentioned technical scheme for first lead screw and guide bar synchronous rotation.

Preferably, the anti-falling assembly comprises a side plate, a first holding rod and a second holding rod, the first screw rod is rotatably connected with the guide rod and the side plate, the side plate is slidably connected with one of the second holding rods, the first holding rod is slidably connected with the other side plate, and one end of the first holding rod is fixedly connected with an extension rod inserted into the second holding rod.

Through adopting above-mentioned technical scheme, when using trainer, can hold first holding rod and second holding rod with the hand, prevent to jump the in-process and fall and be injured.

Preferably, a support is fixedly connected to one of the side plates, a second lead screw is rotatably connected to the support, a slip ring is connected to the second lead screw in a threaded manner, one end of the slip ring penetrates through the side plate and is fixedly connected with the first holding rod, a second motor is mounted on the support, an output shaft of the second motor penetrates through the support and is fixedly connected with the second lead screw, sliding leather sleeves are sleeved on the first holding rod and the second holding rod, induction stress pieces are fixedly connected to the first holding rod and the second holding rod, and induction contacts are arranged on the induction stress pieces.

Through adopting above-mentioned technical scheme, the second motor drives the second lead screw and rotates for the sliding ring removes, drives first holding rod and second holding rod and removes, makes the in-process that the user jumps the march, and the hand can directly hold on first holding rod and second holding rod.

Preferably, the second holding rod is provided with an operation button plate.

Through adopting above-mentioned technical scheme, install the button that is used for controlling first motor and second motor on the operation button board.

Preferably, the outer side of the adjusting rod is bonded with an anti-slip sleeve.

Through adopting above-mentioned technical scheme, conveniently rotate the regulation pole, rotate the regulation pole and can make the screw rod stretch out to adjust the distance between two fixed plates, adjust the distance between the first connecting rod.

The invention also provides a body coordination training system for the body-building exercises, which comprises the body coordination training device for the body-building exercises, and further comprises a user height self-detection module and an induction detection module, wherein the user height self-detection module comprises a height detection sensor and a DSP (digital signal processor) controller, the height detection sensor is installed on the top frame and is used for detecting the height of a user, the signal output end of the height detection sensor is electrically connected with the signal input end of the DSP controller, the control output end of the DSP controller is electrically connected with the electric control end of a first motor in the adjusting component, the first motor is a forward and reverse rotation stepping motor, an initialization module is also arranged in the induction detection module and is used for detecting the change of potential difference, and the induction detection module is in signal connection with the PLC controller, the PLC controller is electrically connected with the second motor.

Through adopting above-mentioned technical scheme, when user's height surpassed 180cm, the first motor of DSP controller control started, adjusts the rising and prevents falling the height of the first connecting rod and the second connecting rod of subassembly, makes it be convenient for grip, and when user's height was less than 180cm, the first motor of DSP controller control started, adjusts the height that reduces the first connecting rod and the second connecting rod of preventing falling the subassembly, automatically regulated.

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

the training assembly can train the body coordination of the aerobics athletes, the adjusting assembly is used for adjusting the height of the training assembly, the training assembly is suitable for users with different heights, the falling-preventing assembly is used for preventing the users from falling down and being injured in the training process, the safety is improved, the use is convenient and simple, and the falling-preventing assembly is automatically controlled and is more convenient.

Drawings

FIG. 1 is a schematic view showing the structure of a device for training the physical coordination of an aerobics athlete in accordance with the present invention;

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

FIG. 3 is a schematic view of the connection of a first link to a second link according to the present invention;

FIG. 4 is a perspective view of an adjustment lever of the present invention;

FIG. 5 is a top view of the fall arrest assembly of the present invention;

FIG. 6 is one of the block diagrams of the aerobics athlete's body coordination training system of the present invention;

fig. 7 is a second block diagram of the aerobics athlete's body coordination training system of the present invention.

In the figure: 1. a training component; 2. an adjustment assembly; 3. a fall-resistant assembly; 11. a chassis; 12. a slider; 13. a collar; 14. a fixing plate; 15. a fixing hole; 16. fixing the bolt; 17. adjusting a rod; 171. a threaded hole; 172. a screw; 18. a first link; 19. a second link; 181. a slide hole; 191. a slide bar; 21. a top frame; 22. a first motor; 23. a first lead screw; 24. a guide bar; 25. a driving wheel; 26. a driven wheel; 27. a belt; 31. a side plate; 32. a support; 33. a second motor; 34. a second lead screw; 35. a slip ring; 36. a first holding rod; 37. a second holding rod; 38. an operation button plate; 361. sliding the leather sheath; 39. and (4) inducing a stress sheet.

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. 1-7, the present invention provides a technical solution:

a aerobics athlete body coordination training device, comprising: the training assembly 1, the adjusting assembly 2 and the anti-falling assembly 3; the adjusting component 2 is fixedly arranged on the training component 1, and the anti-falling component 3 is fixedly arranged on the adjusting component 2;

the training assembly 1 comprises four lantern rings 13, a fixing plate 14, a first connecting rod 18 and a second connecting rod 19, the four lantern rings 13 are fixedly connected with the fixing plate 14, one end of the fixing plate 14 is rotatably connected with an adjusting rod 17, one side of the adjusting rod 17 is provided with a threaded hole 171, the adjusting rod 17 is in threaded connection with a screw rod 172 through the threaded hole 171, the screw rod 172 is fixedly connected with the other fixing plate 14, one side of the first connecting rod 18 is provided with a sliding hole 181, one end of the second connecting rod 19 is fixedly connected with a sliding rod 191, and the sliding rod 191 is inserted into the sliding hole 181 in a sliding mode. Three fixing holes 15 arranged in sequence are formed in one side of the fixing plate 14, a fixing bolt 16 is connected to one side of the fixing plate 14 through the fixing holes 15 in a threaded mode, screw holes are formed in one ends of the first connecting rod 18 and the second connecting rod 19, and one end of the fixing bolt 16 is matched with the screw holes. Two sets of opposite fixing bolts 16 are respectively inserted into the opposite fixing holes 15 and fix the first connecting rod 18 and the second connecting rod 19 through screw holes, and since three fixing holes 15 are provided on each fixing plate 14, when the fixing bolts 16 are inserted into different fixing holes 15, a gap between the two sets of first connecting rods 18 can be adjusted. The training assembly 1 further comprises a base frame 11 and a slider 12, the slider 12 being slidably connected to the top of the base frame 11. The chassis 11 is used to support the entire exercise apparatus. An operation button plate 38 is mounted on the second grip 37, and the operation button plate 38 is used for manually controlling the first motor 22 and the second motor 33.

In order to adjust the height of the training assembly 1, an adjusting assembly 2 is provided, the adjusting assembly 2 comprises an upper frame 21, a first motor 22, a first screw rod 23 and a guide rod 24, the first screw rod 23 and the guide rod 24 are rotatably connected to the top of the sliding block 12, the top of the guide rod 24 is rotatably connected to the bottom of the upper frame 21, the top of the first screw rod 23 penetrates through the upper frame 21, the first motor 22 is fixedly connected to the top of the upper frame 21 through a bolt, and an output shaft of the first motor 22 is welded to one end of the first screw rod 23. The first motor 22 drives the first lead screw 23 to rotate, so that the guide rod 24 is driven by the belt 27, the guide rod 24 is in threaded connection with the lantern ring 13, the first lead screw 23 is in threaded connection with the lantern ring 13, and therefore the height of the lantern ring 13 can be adjusted, and further the heights of the fixing plate 14, the first connecting rod 18 and the second connecting rod 19 can be adjusted.

In order to enable the first screw rod 23 and the guide rod 24 to synchronously rotate, a driving wheel 25 is fixedly connected to the first screw rod 23, a driven wheel 26 is fixedly connected to the guide rod 24, and the driving wheel 25 is in transmission connection with the driven wheel 26 through a belt 27.

In order to prevent injury caused by falling in the jumping process, when the training device is used, a user can hold the first holding rod 36 and the second holding rod 37 by hands, the anti-falling assembly 3 comprises a side plate 31, the first holding rod 36 and the second holding rod 37, the first screw 23 is rotatably connected with the guide rod 24 and the side plate 31, the side plate 31 is slidably connected with one of the second holding rods 37, the first holding rod 36 is slidably connected with the other side plate 31, and one end of the first holding rod 36 is fixedly connected with an extension rod inserted into the second holding rod 37.

In order to enable the hands of the user to be always held on the first holding rod 36 and the second holding rod 37, the second motor 33 drives the second lead screw 34 to rotate, so that the sliding ring 35 moves to drive the first holding rod 36 and the second holding rod 37 to move, and the hands of the user can be always placed on the first holding rod 36 and the second holding rod 37 in the process of jumping and going forward. Fixedly connected with support 32 on one of them curb plate 31, it is connected with second lead screw 34 to rotate on the support 32, threaded connection has sliding ring 35 on the second lead screw 34, curb plate 31 and first holding rod 36 fixed connection are passed to sliding ring 35's one end, install second motor 33 on the support 32, the output shaft of second motor 33 runs through support 32 and 34 fixed connection of second lead screw, all overlap on first holding rod 36 and the second holding rod 37 and be equipped with slip leather sheath 361, equal fixedly connected with response stress piece 39 on first holding rod 36 and the second holding rod 37, be provided with circle inductive contact on the response stress piece 39.

To control the first motor 22 and the second motor 33, an operation button plate 38 is mounted on the second grip 37.

In order to adjust the distance between the first connecting rods 18 and conveniently rotate the adjusting rods 17, anti-skid sleeves are bonded on the outer sides of the adjusting rods 17. Turning the adjustment lever 17 allows the threaded rod 172 to extend, thereby adjusting the distance between the two fixed plates 14.

The invention also provides a body coordination training system for the aerobics player, which comprises the body coordination training device for the aerobics player, and further comprises a user height self-detection module and an induction detection module, wherein the user height self-detection module comprises a height detection sensor and a DSP (digital signal processor) controller, the height detection sensor is installed on the top frame 21 and used for detecting the height of the user, the signal output end of the height detection sensor is electrically connected with the signal input end of the DSP controller, the control output end of the DSP controller is electrically connected with the electric control end of the first motor 22 in the adjusting component 2, and the first motor 22 is set as a forward and reverse stepping motor. When user's height surpassed 180cm, DSP controller control first motor 22 starts, adjust the rising and prevent falling the height of first connecting rod 18 and the second connecting rod 19 of subassembly 3, make it be convenient for grip, when user's height is less than 180cm, DSP controller control first motor 22 starts, adjust the height that falls first connecting rod 18 and the second connecting rod 19 of preventing falling subassembly 3, automatically regulated, still be provided with the initialization module in the response detection module, the response detection module is used for detecting the change of potential difference, response detection module and PLC controller signal connection, PLC controller and second motor 33 electric connection.

The outer sides of the first holding rod 36 and the second holding rod 37 are provided with a sliding leather sheath 361 sleeved on the first holding rod 36 and the second holding rod 37, the inner side of the sliding leather sheath 361 is provided with a plurality of level-uniform arranged salient points, the first holding rod 36 and the second holding rod 37 are provided with induction stress sheets 39, the induction stress sheets 39 are provided with a plurality of circle induction contacts, when the sliding leather sheath 361 rotates up and down, the induction detection module detects the change of potential difference, according to the change of the potential difference, the second motor 33 is driven by the PLC controller to drive the second lead screw 34 to rotate, the slip ring 35 moves, and hands of a user can be placed on the first holding rod 36 and the second holding rod 37 all the time in the process of jumping.

The induction detection module is used for detecting the change of potential difference to judge whether the rotation is initiated from bottom to top or from top to bottom, when the rotation is initiated from bottom to top, every time the salient point passes through one circle of induction contact, the potential difference generates a unit of positive change, at the moment, the second motor 33 is driven to drive the second screw rod 34 to rotate positively, the sliding ring 35 is driven to move positively, when the rotation is initiated from top to bottom, every time the salient point passes through one circle of induction contact, the potential difference generates a unit of negative change, at the moment, the second motor 33 is driven to drive the second screw rod 34 to rotate reversely, and the sliding ring 35 is driven to move reversely.

The induction detection module is also internally provided with an initialization module which is used for detecting the change of the potential difference within the set period time T, when the potential difference does not change within two continuous period times T, the potential difference return-to-zero processing is carried out on the salient points and the induction contacts, namely, no matter which level of the salient points is combined with the induction contacts, once the condition of the initialization module is triggered, the potential difference return-to-zero processing is carried out, so that the initial point of the change of the potential difference is not required to be detected during the next rotation, and each rotation only needs to know that the potential difference changes by a few units in the positive direction or the negative direction.

The structure principle is as follows: training subassembly 1 is used for training aerobics exercises sportsman's health harmony, and adjusting part 2 is used for adjusting training subassembly 1's height, and the training in-process prevents falling subassembly 3 and is used for preventing that the user from falling down the injury. Turning the adjustment lever 17 allows the threaded rod 172 to extend, thereby adjusting the distance between the two fixed plates 14. Two sets of opposite fixing bolts 16 are respectively inserted into the opposite fixing holes 15 and fix the first connecting rod 18 and the second connecting rod 19 through screw holes, and since three fixing holes 15 are provided on each fixing plate 14, when the fixing bolts 16 are inserted into different fixing holes 15, a gap between the two sets of first connecting rods 18 can be adjusted. The first motor 22 drives the first lead screw 23 to rotate, so that the guide rod 24 is driven by the belt 27, the guide rod 24 is in threaded connection with the lantern ring 13, the first lead screw 23 is in threaded connection with the lantern ring 13, and therefore the height of the lantern ring 13 can be adjusted, and further the heights of the fixing plate 14, the first connecting rod 18 and the second connecting rod 19 can be adjusted. The hands of the user can be directly held on the first holding rod 36 and the second holding rod 37, the second motor 33 drives the second screw rod 34 to rotate, so that the sliding ring 35 moves to drive the first holding rod 36 and the second holding rod 37 to move, and the hands of the user can be always placed on the first holding rod 36 and the second holding rod 37 in the process of jumping and advancing. During training, a user places both feet between the two first links 18, jumps immediately and slightly forwards, enables the feet to stand outside the chassis 11 after jumping, and takes the feet between the two first links 18 through jumping again, and trains the body to be flexible circularly.

The parts not involved in the present invention are the same as or can be implemented by the prior art. Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.