CN214632879U - Lifting mechanism for rhythm machine and rhythm machine - Google Patents

Abstract

The utility model discloses a elevating system for rule moves machine, its characterized in that: the lifting mechanism comprises a base, a lifting surface, a driving piece, at least two groups of lifting components and a connecting structure; the base is used for bearing the driving piece, at least two groups of lifting components and a connecting structure; each group of lifting components comprises four connecting rods which are hinged to form a rhombic lifting component, wherein two fixed ends which are oppositely arranged on the rhombic lifting component are respectively hinged to the lifting surface and the base, and any one or two free ends of the other two free ends are connected with the driving part through a connecting structure to form transmission; the driving piece is arranged on the base, is connected with the connecting structure and drives the two groups of lifting components to act through the connecting structure; the utility model provides an elevating system and law motivation solves current elevating platform and/or elevating platform connecting rod vertical power and horizontal torsion scheduling problem simultaneously, promotes use comfort and stability.

Description

Lifting mechanism for rhythm machine and rhythm machine

Technical Field

The utility model relates to a body-building equipment trade especially relates to a elevating system and regular motion machine that is used for law machine.

Background

With the accelerated pace of life and work, most consumers do not have enough time to do outdoor physical exercise, and the rhythm machine as a household sports apparatus is more popular among the consumers;

the law motivation is to realize the high-frequency lifting of the lifting platform by utilizing a lifting mechanism, so that a consumer can obtain the amount of exercise like a running state; however, the existing lifting structure of the law motivation has some defects: the experience feeling is poor, the damage is easy, and the service life is short; the method comprises the following specific steps: current elevating system receives vertical power and horizontal torsion when promoting the connecting rod of elevating platform displacement from top to bottom and drive mechanism cooperation linkage at power transmission in-process, and the user on the elevating platform is in unstable state for two kinds of power effects, reduces to use at high frequency lift in-process and experiences and feels, is as patent number: 200610090741.9, the patent names: a body-building training device simulating qigong cycle vibration; the device adopts a lever lifting mode, swings with a fulcrum as a circle center, leads a connecting rod to simultaneously bear vertical force and transverse torque force, and leads the knees of consumers standing on a lifting platform to be easily damaged by the forces in two directions in the movement process; as another example, the patent numbers are: 202010338213.0, the patent names: a right angle turning law engine drives a connecting rod to rotate 90 degrees and then realize lifting, the connecting rod needs to swing greatly, the torsion is large, more importantly, great driving force is needed, the cost of the whole equipment is overhigh, and similarly, the connecting rod swings in a large direction and high frequency in a reciprocating swing mode, and the knees of a consumer standing on a lifting platform are easily damaged; moreover, the existing lifting structure of the lifting mechanism can only be prepared by metal parts with high hardness, otherwise, the phenomenon of fracture and damage is very easy to occur, so that the whole weight of the lifting mechanism becomes heavier, the production and manufacturing cost is greatly improved, the sale price is higher, and the market competitiveness is not existed;

in conclusion, the existing motivations are to be further improved.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to solve the problem in the prior art, provide a elevating system and rule motivation for rule motivation, its simple structure, reasonable in design and easy realization solve current elevating platform and/or elevating platform connecting rod vertical power and horizontal torsion scheduling problem simultaneously, promote use comfort and stability.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a lifting mechanism for a motor, comprising: the lifting mechanism comprises a base, a lifting surface, a driving piece, at least two groups of lifting components and a connecting structure;

the base is used for bearing the driving piece, at least two groups of lifting components and a connecting structure;

each group of lifting components comprises four connecting rods which are hinged to form a rhombic lifting component, wherein two fixed ends which are oppositely arranged on the rhombic lifting component are respectively hinged to the lifting surface and the base, and any one or two free ends of the other two free ends are connected with the driving part through a connecting structure to form transmission;

the driving piece is arranged on the base, is connected with the connecting structure and drives the two groups of rhombic lifting components to synchronously lift through the connecting structure;

the driving part drives the connecting structure to move so as to link the free ends of the two groups of rhombic lifting components connected with the connecting structure to synchronously change the positions, so that the lifting surface hinged on the fixed end moves up and down relative to the base.

Furthermore, the connecting structure comprises a transmission shaft, a cam seat and a first connecting piece, wherein the cam seat is arranged on the transmission shaft in a rotation stopping manner; one end of the first connecting piece is sleeved on the cam seat, and the other end of the first connecting piece is hinged with the free end of the rhombic lifting component; the driving piece drives the transmission shaft to rotate, and the cam seats arranged at the two ends of the transmission shaft are linked to rotate, so that the first connecting piece sleeved on the cam seats is driven to push the free end of the rhombic lifting assembly to change positions.

Furthermore, the lifting mechanism comprises a first group, a second group, a third group and a fourth group of rhombic lifting components, and the first group and the third group of rhombic lifting components, the second group and the fourth group of rhombic lifting components are respectively distributed along two sides of the axis of the transmission shaft; the first group of rhombic lifting components and the second group of rhombic lifting components are respectively connected with the two cam seats on the transmission shaft through the first connecting piece, and the deflection moving directions of the two cam seats are opposite when the two cam seats rotate along with the transmission shaft; the third group and the fourth group of rhombic lifting assemblies are respectively connected with the two cam seats on the transmission shaft through the first connecting piece, and the deflection moving directions of the two cam seats are opposite when the two cam seats rotate along with the transmission shaft.

Furthermore, the device also comprises an auxiliary structure which comprises a second connecting piece and an auxiliary cam; the auxiliary cam is arranged on the transmission shaft in a rotation stopping manner; one end of the second connecting piece is hinged to the other free end of the rhombic lifting component, and the other end of the second connecting piece is sleeved on the auxiliary cam; the cam seat and the auxiliary cam which are correspondingly sleeved and connected with the first connecting piece and the second connecting piece which are hinged on the same group of rhombic lifting structures have opposite deflection displacement directions.

Further, the driving member is a motor.

Further, the motor drives the transmission shaft to rotate through a transmission belt.

Furthermore, the connecting rod of the rhombic lifting component is made of a nylon material.

A rhythm machine comprises a shell, a fixed seat and a bearing platform; the lifting mechanism is also included; the shell and the lifting mechanism are integrally formed or are arranged in the shell; the fixed end of the lifting structure is hinged with the base; the bearing platform is connected with the lifting surface or integrally formed.

Technical scheme for prior art, the beneficial effect who gains is:

(1) the utility model provides a lifting mechanism and rule motivation for rule motivation, its simple structure, reasonable in design and easy realization, the principle of the displacement volume that produces among the transmission process is decomposed to deformation based on two sets of diagonal of rhombus, utilizes at least two sets of rhombus lifting unit to support the lifting surface to the steady displacement about going up and down of driving the lifting surface specifically does: the four connecting rods are hinged to form the rhombic lifting assembly, when the driving piece transmits force to the rhombic lifting assembly through the connecting structure, transverse torsion is eliminated through the rhombic structure formed by the four connecting rods, the lifting surface is guaranteed to move only in the vertical direction, transverse deviation cannot occur, the comfort level in use is improved, more importantly, after the transverse torsion is eliminated, the stability of the whole lifting structure is better, the lifting structure is not easy to damage, the service life is longer, the plastic parts can be adopted for assembly, and the cost is reduced; moreover, the structure is simpler to manufacture, lower in cost, lower in selling price compared with the selling price of the existing law motivation and more popular with consumers;

(2) the utility model adopts the transmission shaft, the cam seat and the first connecting piece as the connecting structure with the transmission force of the rhombic lifting components, the structure is simpler, the force transmission of at least two rhombic lifting components is realized through one transmission shaft, the loss is not easy to occur in the force transmission process, the lifting function can be realized only by easily driving any free end in the rhombic lifting components, and compared with the existing lever mechanism and the lever plus torsion mechanism, the connecting structure of the utility model has more direct force transmission and better stability;

(3) the utility model ensures the stability in the lifting process through four groups of rhombic lifting components, the four groups of rhombic lifting components are respectively arranged at four corners of the lifting surface, and the four groups of rhombic lifting components are realized through one transmission shaft, the force transmission is more synchronous, the lifting process approaches to the horizontal state, and the experience sense of a consumer when standing on the lifting surface for exercise is better;

(4) the utility model discloses still add auxiliary structure, still set up the second connecting piece on each group of rhombus lifting unit and guarantee and promote the stability of rhombus lifting unit, under the condition that first connecting piece became invalid, the second connecting piece also can realize the drive, in addition, in first connecting piece driving process, the second connecting piece can assist the support, the whole structure goes up and down more steadily, is difficult for appearing the beat, intensity and steadiness are better;

(5) the utility model adopts the connecting structure and the connecting rod which can be made of nylon, thereby not only ensuring the strength and the wear resistance of the whole lifting mechanism, but also reducing the overall weight of the rhythm machine and the production cost compared with the existing metal material parts;

(6) rhythm machine simple structure, stability good, with low costs, holistic experience is felt and life promotes by a wide margin, more receives consumer favor.

Drawings

The accompanying drawings, which are described herein, serve to provide a further understanding of the invention and constitute a part of this specification, and the exemplary embodiments and descriptions thereof are provided for explaining the invention without unduly limiting it. In the drawings:

fig. 1 is a schematic perspective view of the lifting mechanism of the present invention;

fig. 2 is a schematic view of a three-dimensional exploded structure of the lifting mechanism of the present invention;

fig. 3 is a schematic view of a three-dimensional exploded structure of the rhombic lifting assembly of the present invention;

fig. 4 is a schematic diagram of the action direction of the rhombic elevating mechanism of the present invention.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention clearer and more obvious, the following description of the present invention with reference to the accompanying drawings and embodiments is provided for further details. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

The exercise machine is mainly used for a consumer (user) to exercise by simulating running exercise indoors, and mainly utilizes the lifting mechanism to drive the user standing on the lifting platform to lift at high frequency so as to achieve the effects of relaxing and tensing and dredging channels and transmit the vibration force to the whole body to realize the exercise effect;

as shown in fig. 1-4, the lifting mechanism for a rhythm machine of the present invention comprises a base 1, a lifting surface 2, a driving member 3, at least two sets of lifting components 4 and a connecting structure 5;

the base 1 is used for bearing the driving piece 3, at least two groups of lifting components 4 and a connecting structure 5;

at least two groups of lifting components 4, each group of lifting components 4 includes four connecting rods 41, 42, 43, 44 (the connecting rods 41, 42, 43, 44 of the present invention are made of nylon material, the four connecting rods 41, 42, 43, 44 are hinged to form a rhombic lifting component 4, wherein two relatively arranged fixed ends 410, 430 on the rhombic lifting component 4 are hinged to the lifting surface 2 and the base 1 respectively, and any one or two free ends 420, 440 of the other two free ends 420, 440 are connected with the driving member 3 through the connecting structure 5 to form transmission;

the driving piece 3 is arranged on the base 1, is connected with the connecting structure 5 and drives the two groups of lifting components 4 to synchronously lift through the connecting structure 5; the driving member 3 of the present invention is exemplified by a servo motor, and of course, other driving members 3 can be used, and all the members having driving function belong to the category of the driving member 3 of the present invention;

the connecting structure 5 comprises a transmission shaft 51, a cam seat 52 and a first connecting piece 53, wherein the cam seat 52 is arranged on the transmission shaft 51 in a rotation stopping manner; one end 531 of the first connecting piece 53 is sleeved on the cam seat 52, and the other end 532 is hinged with the free end 420 of the rhombic lifting component 4; the driving part 3 drives the transmission shaft 51 to rotate, and the cam seats 52 respectively arranged at the two ends of the transmission shaft 51 are linked to rotate, so as to drive the first connecting part 53 sleeved on the cam seat 52 to push the free ends 420 and 440 of the rhombic lifting assembly 4 to change positions;

the driving member 3 drives the connecting structure 5 to move so as to link the free ends 420 and 440 of the diamond-shaped lifting assembly 4 connected therewith to change positions synchronously, so that the lifting surface 2 hinged on the fixed ends 410 and 430 moves up and down relative to the base 1.

Detailed description of the preferred embodimentsthe present invention, as shown in fig. 1-4, is illustrated by a rhythm machine with four diamond-shaped lifting assemblies, which mainly comprises the following components: the device comprises a shell 1, a fixed seat 9, a bearing table 2, a motor 3, a first group, a second group, a third group and a fourth group of rhombic lifting components 4A, 4B, 4C and 4D, a transmission shaft 51, a plurality of cam seats 52, a plurality of first connecting pieces 53, a plurality of second connecting pieces 6 and a plurality of auxiliary cams 7;

during actual assembly and use, (1) hinge seats 9 (namely, fixed seats 9) are arranged at four points on the inner part of the shell 1, so as to be hinged with fixed ends 410 and 430 of the rhombic lifting assembly 4 subsequently; (2) two bearing seats A are arranged in the shell 1 for rotatably mounting the transmission shaft 51; (3) a motor 3 (servo motor) is fixed in the shell 1, and an output shaft of the motor 3 is connected with a transmission shaft 51 through a transmission belt 8, so that the transmission shaft 51 is driven to rotate when the motor 3 works (it should be noted that the output shaft of the motor 3 can directly act on the transmission shaft 51 to drive the transmission shaft 51 to rotate); (4) assembling four groups of rhombic lifting assemblies 4 (namely a first group, a second group, a third group and a fourth group of rhombic lifting assemblies 4A, 4B, 4C and 4D), wherein the four groups of rhombic lifting assemblies 4A, 4B, 4C and 4D are respectively provided with four connecting rods 41, 42, 43 and 44 and are formed by hinging the four connecting rods 41, 42, 43 and 44, the hinged ends vertical to the bottom surface of the shell 1 are fixed ends 410 and 430, and one fixed end 410 is hinged and matched with a hinged seat 9 pre-arranged in the shell 1; in this embodiment, the first and third groups of rhombic lifting assemblies 4A and 4C and the second and fourth groups of rhombic lifting assemblies 4B and 4D are respectively arranged along two sides of the axis of the transmission shaft 51; the first and second groups of rhombic lifting components 4A and 4B are respectively connected with the two cam seats 52A and 52B on the transmission shaft 51 through the first connecting pieces 53A and 53B, and the deflection moving directions of the two cam seats 52A and 52B are opposite when the two cam seats 52A and 52B rotate along with the transmission shaft 51; the third group and the fourth group of diamond- shaped lifting components 4C and 4D are respectively connected with the two cam seats 52C and 52D on the transmission shaft 51 through the first connecting pieces 53C and 53D, and the deflection moving directions of the two cam seats 52C and 52D when the two cam seats rotate along with the transmission shaft 51 are opposite; (5) after four groups of rhombic lifting assemblies 4 are arranged, the transmission shaft 51 is connected with the rhombic lifting assemblies 4A, 4B, 4C and 4D through the connecting structure 5 and the auxiliary structure, and the method specifically comprises the following steps: a plurality of cam seats 52A, 52B, 52C and 52D are sleeved and fixed on the transmission shaft 51, wherein the protruding directions of the cam seats 52 respectively arranged at the two axial sides of the transmission shaft 51 are opposite (namely the protruding directions of the cam seats 52A and 52B acting on the first and second groups of rhombic lifting components 4A and 4B are opposite), then one end of the first connecting piece 53A is sleeved on the cam seat 52A, and the other end of the first connecting piece 53A is hinged with the free end 420 of the rhombic lifting component 4; in this way, the first, second, third and fourth groups of rhombic lifting assemblies 4A, 4B, 4C and 4D are correspondingly connected with the 4 cam seats 52A, 52B, 52C and 52D on the transmission shaft 51 through the 4 first connecting pieces 53A, 53B, 53C and 53D respectively; (6) installing an auxiliary structure, in the same way, sleeving a plurality of auxiliary cams 7 on the transmission shaft 51, and connecting the other free end 440 of the rhombic lifting component 4 with the auxiliary cams 7 through a second connecting piece 6 to form eccentric fit; it should be noted that the directions of the deflection displacements of the cam seats 52 and the second auxiliary cams 7 correspondingly sleeved on the first connecting member 53 and the second connecting member 6 hinged to the same group of rhombic lifting structures are opposite, for example, the directions of the cam seats 52 correspondingly matched with the first connecting member 52A and the second connecting member 6A and the convex parts of the auxiliary cams 7 are opposite to each other when the first connecting member 53 and the second connecting member 6 are applied to the first group of rhombic lifting assemblies 4 and the first connecting member 53A and the second connecting member 6A are applied to the two free ends 420 and 440; (7) after 4 groups of rhombic lifting components 4 are respectively connected and matched with the same transmission shaft 51, the bearing table 2 (lifting surface 2) is fixed with the other fixed end 430 of the rhombic lifting component 4 to complete the whole assembly process;

in actual use, the motor 3 is electrified to work, an output shaft of the motor rotates, and a transmission shaft 51 is driven to rotate through a transmission belt 8 (a belt); the transmission shaft 51 rotates, the cam seat 52 and the auxiliary cam 7 thereon also rotate, the cam seat 52 and the convex part of the auxiliary cam 7 drive the first and second connecting members 53, 6 to drive the two free ends 420, 440 of the four groups of diamond-shaped lifting components 4 to displace in the rotating process (for example, under the action of the cam seat 52, the first connecting member 53 drives one free end 420 to displace away from the transmission shaft 51, and synchronously, under the action of the auxiliary cam 7, the second connecting member 7 drives the other free end 440 to move towards the transmission shaft 51, and further drives the upper fixed ends 430 of the 4 hinged connecting rods 41, 42, 43, 44 to move downwards, and conversely, when the cam seat 52 rotates 180 degrees along with the transmission shaft 51, the first connecting member 53 and the second connecting member 6 drive the two free ends 420, 440 to move oppositely and to swing back and forth in an alternating manner, so as to realize the lifting and lowering of the receiving platform 2 on the upper fixed end 430, and the rest of the second group, the auxiliary cam 7, and the cam seat 52 and the cam 7 drive the two free ends 420 to displace in the displacement towards the direction away from the transmission shaft 51, and move downwards, Lifting is realized in the same way of the third group and the fourth group of rhombic lifting components 4B, 4C and 4D; the cam seats 52 of the rhombic lifting assemblies 4 and the convex parts of the auxiliary cams 7 which are arranged on the two sides of the transmission shaft 51 need to be arranged in opposite directions to realize synchronous lifting and descending.

The utility model provides a lifting mechanism and rule motivation for rule motivation, its simple structure, reasonable in design and easy realization, the principle of the displacement volume that produces among the transmission process is decomposed to deformation based on two sets of diagonal of rhombus, utilizes at least two sets of rhombus lifting unit to support the lifting surface to the steady displacement about going up and down of driving the lifting surface specifically does: the four connecting rods are hinged to form the rhombic lifting assembly, when the driving piece transmits force to the rhombic lifting assembly through the connecting structure, transverse torsion is eliminated through the rhombic structure formed by the four connecting rods, the lifting surface is guaranteed to move only in the vertical direction, transverse offset cannot occur, the comfort level in use is improved, more importantly, after the transverse torsion is eliminated, the stability of the whole lifting structure is better, the lifting structure is not easy to damage, the service life is longer, the assembly can be completed by adopting nylon parts, and the cost is reduced; moreover, the structure is simpler to manufacture and lower in cost, and the economic benefit of enterprises is improved; the utility model adopts the transmission shaft, the cam seat and the first connecting piece as the connecting structure with the transmission force of the rhombic lifting components, the structure is simpler, the force transmission of at least two rhombic lifting components is realized through one transmission shaft, the loss is not easy to occur in the force transmission process, the lifting function can be realized only by easily driving any free end in the rhombic lifting components, and compared with the existing lever mechanism and the lever plus torsion mechanism, the connecting structure of the utility model has more direct force transmission and better stability; the utility model ensures the stability in the lifting process through four groups of rhombic lifting components, the four groups of rhombic lifting components are respectively arranged at four corners of the lifting surface, and the four groups of rhombic lifting components are realized through one transmission shaft, the force transmission is more synchronous, the lifting process approaches to the horizontal state, and the experience sense of a consumer when standing on the lifting surface for exercise is better; the utility model discloses still add auxiliary structure, still set up the second connecting piece on each group of rhombus lifting unit and guarantee and promote the stability of rhombus lifting unit, under the condition that first connecting piece became invalid, the second connecting piece also can realize the drive, in addition, in first connecting piece driving process, the second connecting piece can assist the support, the whole structure goes up and down more steadily, is difficult for appearing the beat, intensity and steadiness are better; the utility model adopts the connecting structure and the connecting rod which can be made of nylon, thereby not only ensuring the strength and the wear resistance of the whole lifting mechanism, but also reducing the overall weight of the rhythm machine and the production cost compared with the existing metal material parts; rhythm machine simple structure, stability good, with low costs, holistic experience is felt and life promotes by a wide margin, more receives consumer favor.

While the foregoing description shows and describes the preferred embodiments of the present invention, it is to be understood that the invention is not limited to the forms disclosed herein, but is not intended to be exhaustive or to exclude other embodiments and may be used in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.

Claims (8)

1. A lifting mechanism for a motor, comprising: the lifting mechanism comprises a base, a lifting surface, a driving piece, at least two groups of lifting components and a connecting structure;

the base is used for bearing the driving piece, at least two groups of lifting components and a connecting structure;

each group of lifting components comprises four connecting rods which are hinged to form a rhombic lifting component, wherein two fixed ends which are oppositely arranged on the rhombic lifting component are respectively hinged to the lifting surface and the base, and any one or two free ends of the other two free ends are connected with the driving part through a connecting structure to form transmission;

the driving piece is arranged on the base, is connected with the connecting structure and drives the two groups of rhombic lifting components to synchronously lift through the connecting structure;

the driving part drives the connecting structure to move so as to link the free ends of the two groups of rhombic lifting components connected with the connecting structure to synchronously change the positions, so that the lifting surface hinged on the fixed end moves up and down relative to the base.

2. A lift mechanism for a motor according to claim 1, wherein: the connecting structure comprises a transmission shaft, a cam seat and a first connecting piece, wherein the cam seat is arranged on the transmission shaft in a rotation stopping manner; one end of the first connecting piece is sleeved on the cam seat, and the other end of the first connecting piece is hinged with the free end of the rhombic lifting component; the driving piece drives the transmission shaft to rotate, and the cam seats arranged at the two ends of the transmission shaft are linked to rotate, so that the first connecting piece sleeved on the cam seats is driven to push the free end of the rhombic lifting assembly to change positions.

3. A lift mechanism for a motor according to claim 2, wherein: the lifting mechanism comprises a first group, a second group, a third group and a fourth group of rhombic lifting components, wherein the first group and the third group of rhombic lifting components and the second group and the fourth group of rhombic lifting components are respectively distributed along two sides of the axis of the transmission shaft; the first group of rhombic lifting components and the second group of rhombic lifting components are respectively connected with the two cam seats on the transmission shaft through the first connecting piece, and the deflection moving directions of the two cam seats are opposite when the two cam seats rotate along with the transmission shaft; the third group and the fourth group of rhombic lifting assemblies are respectively connected with the two cam seats on the transmission shaft through the first connecting piece, and the deflection moving directions of the two cam seats are opposite when the two cam seats rotate along with the transmission shaft.

4. A lifting mechanism for a motor according to claim 2 or 3, wherein: the auxiliary structure comprises a second connecting piece and an auxiliary cam; the auxiliary cam is arranged on the transmission shaft in a rotation stopping manner; one end of the second connecting piece is hinged to the other free end of the rhombic lifting component, and the other end of the second connecting piece is sleeved on the auxiliary cam; the cam seat and the auxiliary cam which are correspondingly sleeved and connected with the first connecting piece and the second connecting piece which are hinged on the same group of rhombic lifting structures have opposite deflection displacement directions.

5. A lift mechanism for a motor according to claim 2, wherein: the driving piece is a motor.

6. The lift mechanism for a motor of claim 5, wherein: the motor drives the transmission shaft to rotate through a transmission belt.

7. The lift mechanism for a motor of claim 5, wherein: the connecting rod of the rhombic lifting component is made of a nylon material.

8. A rhythm machine comprises a shell, a fixed seat and a bearing platform; the method is characterized in that: further comprising a lifting mechanism as claimed in any one of claims 1 to 7; the shell and the lifting mechanism are integrally formed or are arranged in the shell; the fixed end of the lifting structure is hinged with the base; the bearing platform is connected with the lifting surface or integrally formed.

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