Pneumatic and mechanical linkage oscillation mechanism and passenger massage device

Abstract

The utility model provides a pneumatic and mechanical linkage oscillation mechanism and a passenger massage device.The pneumatic and mechanical linkage oscillation mechanism is arranged in a mounting groove of a bearing part and comprises a vibration exciter, the vibration exciter is arranged in the mounting groove, and the vibration exciter can vibrate in the mounting groove at a set frequency; a pneumatic adjusting part is further arranged on the side, close to and / or away from the opening of the mounting groove, of the vibration exciter, is an air bag body with the variable volume through inflation and deflation, and is used for adjusting the distance between the vibration exciter and the opening of the mounting groove and transmitting vibration. By arranging the vibration exciter, the vibration exciter vibrates in the mounting groove at the set frequency, the massage function can be achieved, the pneumatic adjusting part is arranged on the side, close to and / or away from the opening of the mounting groove, of the vibration exciter, and the pneumatic adjusting part can transmit vibration while adjusting the distance between the vibration exciter and the opening of the mounting groove. The vibration amplitude of the vibration exciter transmitted to the passenger position on one side of the opening of the mounting groove is changed, and then the effect of adjusting the massage strength is achieved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of automobile parts, in particular to a pneumatic and mechanical linkage oscillation mechanism and a passenger massage device. BACKGROUND

[0002] With the increase of the number of automobiles and the improvement of people's living standards, more and more attention is paid to the driving comfort of automobiles. Among them, the vibration module is added in the seat to realize the massage function, which can effectively improve the riding experience of the automobile. The automobile seat massage structure in the prior art is mostly directly fixed and assembled in the interior of the automobile seat. Since the ordinary mechanical vibration type massage cannot adjust the vibration amplitude, the massage intensity is fixed, which makes the massage mode relatively single, and the applicability is insufficient for different users. CONTENT OF THE UTILITY MODEL

[0003] In a first aspect, the application provides a pneumatic and mechanical linkage oscillation mechanism arranged in a mounting groove of a bearing member, comprising:

[0004] a vibration exciter arranged in the mounting groove, the vibration exciter can vibrate at a set frequency in the mounting groove;

[0005] a pneumatic adjusting part arranged on the side of the vibration exciter close to and / or away from the mounting groove opening, the pneumatic adjusting part is a gas bag body with variable volume by charging and discharging, and the pneumatic adjusting part is used for adjusting the distance between the vibration exciter and the mounting groove opening and transmitting vibration.

[0006] According to the technical scheme provided by some embodiments of the application, the pneumatic adjusting part comprises a first gas bag body and a second gas bag body, the first gas bag body covers one end of the vibration exciter close to the mounting groove opening, and the second gas bag body covers one end of the vibration exciter away from the mounting groove opening.

[0007] According to the technical scheme provided by some embodiments of the application, further comprising a shell, the shell has an open end, the open end is arranged corresponding to the mounting groove opening, the shell has a first space inside, and the vibration exciter and the pneumatic adjusting part are arranged in the first space.

[0008] According to the technical scheme provided by some embodiments of the application, the vibration exciter and the inner side wall of the shell are connected by an elastic member.

[0009] According to the technical scheme provided by some embodiments of the application, the first gas bag body and the second gas bag body are connected to each other, and an external gas source is connected through an air pipe.

[0010] According to the technical scheme provided in the embodiments of the present application, the first air bag body and the second air bag body are independent of each other and are connected to an external air source through air pipes respectively.

[0011] According to the technical scheme provided in the embodiments of the present application, the pneumatic adjusting part has a first state and a second state, when in the first state, the first air bag body and the second air bag body are inflated and expanded, and when in the second state, the first air bag body and the second air bag body are deflated and contracted.

[0012] According to the technical scheme provided in the embodiments of the present application, the pneumatic adjusting part has a third state and a fourth state, when in the third state, the first air bag body is inflated and expanded, and the second air bag body is deflated and contracted, and when in the fourth state, the first air bag body is deflated and contracted, and the second air bag body is inflated and expanded.

[0013] According to the technical scheme provided in the embodiments of the present application, the technical scheme further comprises a controller, which is used to control the opening and closing of the air pipe circuit, so as to control the inflation and deflation of the first air bag body and the second air bag body.

[0014] In the second aspect, the present application provides a passenger massage device, which comprises the pneumatic and mechanical linkage oscillation mechanism as described above.

[0015] Compared with the prior art, the present application has the following beneficial effects: the present application provides a pneumatic and mechanical linkage oscillation mechanism and a passenger massage device, the pneumatic and mechanical oscillation mechanism is arranged in a mounting groove of a bearing part, and comprises a vibration exciter, the vibration exciter is arranged in the mounting groove and can vibrate at a set frequency in the mounting groove; the side of the vibration exciter close to and / or away from the mouth of the mounting groove is further provided with a pneumatic adjusting part, the pneumatic adjusting part is an air bag body with a variable volume by inflation and deflation, and is used to adjust the distance between the vibration exciter and the mouth of the mounting groove and to transmit vibration; by arranging the vibration exciter to vibrate at a set frequency in the mounting groove, the vibration massage function can be realized; by arranging the pneumatic adjusting part on the side of the vibration exciter close to and / or away from the mouth of the mounting groove, the pneumatic adjusting part can not only adjust the distance between the vibration exciter and the mouth of the mounting groove, but also transmit vibration, so as to change the vibration amplitude of the vibration exciter transmitted to the side of the mouth of the mounting groove where the passenger is located, and further realize the effect of adjusting the vibration massage intensity.

[0016] It should be understood that the description of technical features, technical solutions, advantages or similar language in the present application does not imply that all features and advantages can be realized in any single embodiment. On the contrary, it can be understood that the description of features or advantages means that the specific technical features, technical solutions or advantages are included in at least one embodiment. Therefore, the description of technical features, technical solutions or advantages in the specification does not necessarily refer to the same embodiment. Further, the technical features, technical solutions and advantages described in the embodiments can be combined in any appropriate manner. Those skilled in the art will understand that the embodiments can be implemented without one or more specific technical features, technical solutions or advantages of the specific embodiments. In other embodiments, additional technical features and advantages can be identified in specific embodiments that do not embody all embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can obtain other drawings from these drawings without creative labor.

[0018] Figure 1 A structural schematic diagram of a pneumatic and mechanical linkage oscillating mechanism provided for Embodiment 1 of the present application;

[0019] Figure 2 A structural schematic diagram of a first air bag body and a second air bag body of a pneumatic and mechanical linkage oscillating mechanism provided for Embodiment 1 of the present application when they are in communication and integrally formed;

[0020] Figure 3 A structural schematic diagram of a first air bag body and a second air bag body of a pneumatic and mechanical linkage oscillating mechanism provided for Embodiment 1 of the present application when they are in communication and independently formed;

[0021] Figure 4 An exploded view of a first air bag body and a second air bag body of a pneumatic and mechanical linkage oscillating mechanism provided for Embodiment 1 of the present application when they are in communication;

[0022] Figure 5 A structural schematic diagram of a first air bag body and a second air bag body of a pneumatic and mechanical linkage oscillating mechanism provided for Embodiment 1 of the present application when they are independent of each other;

[0023] Figure 6 An exploded view of a first air bag body and a second air bag body of a pneumatic and mechanical linkage oscillating mechanism provided for Embodiment 1 of the present application when they are independent of each other;

[0024] Figure 7Structure schematic diagram of a first air bag body and a second air bag body of a pneumatic and mechanical linkage oscillating mechanism provided in Embodiment 1 of the present application when the first air bag body and the second air bag body are independent of each other and in a first state;

[0025] Figure 8 Structure schematic diagram of a first air bag body and a second air bag body of a pneumatic and mechanical linkage oscillating mechanism provided in Embodiment 1 of the present application when the first air bag body and the second air bag body are independent of each other and in a second state;

[0026] Figure 9 Structure schematic diagram of a first air bag body and a second air bag body of a pneumatic and mechanical linkage oscillating mechanism provided in Embodiment 1 of the present application when the first air bag body and the second air bag body are independent of each other and in a third state;

[0027] Figure 10 Structure schematic diagram of a first air bag body and a second air bag body of a pneumatic and mechanical linkage oscillating mechanism provided in Embodiment 1 of the present application when the first air bag body and the second air bag body are independent of each other and in a fourth state;

[0028] Figure 11 Control gas path schematic diagram of a pneumatic and mechanical linkage oscillating mechanism provided in Embodiment 1 of the present application;

[0029] Figure 12 Structure schematic diagram of a passenger massage device suitable for a back provided in Embodiment 2 of the present application;

[0030] Figure 13 Structure schematic diagram of a passenger massage device suitable for a thigh and a hip provided in Embodiment 2 of the present application;

[0031] Figure 14 Structure schematic diagram of a passenger massage device suitable for a calf provided in Embodiment 2 of the present application;

[0032] Figure 15 Structure schematic diagram of a passenger massage device suitable for a foot provided in Embodiment 2 of the present application.

[0033] The text annotations in the figure represent:

[0034] 1, shell; 2, comfort sponge; 3, exciter; 4, pneumatic adjusting part; 5, air pipe; 6, external air source; 7, elastic member; 8, controller; 9, switch; 10, seat cover; 11, back cushion; 12, seat cushion; 13, leg support cushion; 14, footboard; 41, first air bag body; 42, second air bag body. DETAILED DESCRIPTION

[0035] In order to make the technical solution of the present application better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings, and the description in this part is only exemplary and explanatory, and should not have any limiting effect on the protection scope of the present application. Specifically, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the protection scope of the present application.

[0036] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0037] Embodiment 1

[0038] As mentioned in the background, in order to solve the problems in the prior art, the present embodiment provides a pneumatic and mechanical linkage oscillation mechanism arranged in a mounting groove of a bearing member, comprising:

[0039] The exciter 3 is arranged in the mounting groove, and the exciter 3 can vibrate at a set frequency in the mounting groove;

[0040] The pneumatic adjusting part 4 is arranged on the side of the exciter 3 close to and / or away from the mounting groove, and the pneumatic adjusting part 4 is a gas bag body with variable volume by charging and discharging, and the pneumatic adjusting part 4 is used to adjust the distance between the exciter 3 and the mounting groove and to transmit vibration.

[0041] As Figure 1As shown, the exciter 3 is a device that can be set to a frequency to vibrate after being powered on, such as a vibration motor, and the carrier can be selected from a seat cushion, a seat pad, a leg support pad, or a foot pedal foam. An installation slot is opened on the side of the foam close to the human body for accommodating the exciter 3. The exciter 3 is further provided with a seat cover 10 and a comfort sponge 2 between the passenger. The carrier can also be a shell with an installation slot inside. A groove is opened on the side of the foam away from the human body. The installation slot is installed with the slot opening facing the bottom of the groove. The exciter 3 is further provided with a seat cover 10, a comfort sponge 2, and a foam between the passenger.

[0042] By setting the exciter 3 to vibrate at a set frequency in the installation slot, the vibration massage function can be achieved. The pneumatic adjusting part 4 is set on the side of the exciter 3 close to and / or away from the installation slot opening. The pneumatic adjusting part 4 can adjust the distance between the exciter 3 and the installation slot opening while also transmitting vibrations to change the vibration amplitude of the passenger on the side of the installation slot opening, thereby achieving the effect of adjusting the vibration massage intensity.

[0043] In a preferred embodiment, the pneumatic adjusting part 4 includes a first air bag body 41 and a second air bag body 42. The first air bag body 41 covers one end of the exciter 3 close to the installation slot opening. The second air bag body 42 covers one end of the exciter 3 away from the installation slot opening.

[0044] As shown in FIG. 1, the seat cushion 1 is provided with an exciter 3, a pneumatic adjusting part 4, a seat cover 10, and a comfort sponge 2. The exciter 3 is a device that can be set to a frequency to vibrate after being powered on, such as a vibration motor, and the carrier can be selected from a seat cushion, a seat pad, a leg support pad, or a foot pedal foam. An installation slot is opened on the side of the foam close to the human body for accommodating the exciter 3. The exciter 3 is further provided with a seat cover 10 and a comfort sponge 2 between the passenger. The carrier can also be a shell with an installation slot inside. A groove is opened on the side of the foam away from the human body. The installation slot is installed with the slot opening facing the bottom of the groove. The exciter 3 is further provided with a seat cover 10, a comfort sponge 2, and a foam between the passenger. Figure 1As shown, the pneumatic adjusting part 4 includes a first air bag body 41 and a second air bag body 42, which cover both sides of the exciter 3 and are fixed to the exciter 3 by adhesion; both have the same structure, and in this embodiment, each is composed of two air bags in communication with each other. The number of air bags in each air bag body is not specially limited, and in other embodiments of the application, an air bag body composed of any number of air bags can be selected according to actual conditions.

[0045] In a preferred embodiment, the shell 1 has an open end corresponding to the installation groove, and the shell 1 has a first space inside, and the exciter 3 and the pneumatic adjusting part 4 are arranged in the first space.

[0046] As shown in Figure 1 , the shell 1 is approximately a cuboid shell arranged in the installation groove, and the open end of the shell 1 is in the same direction as the installation groove; the first space is the internal space of the shell 1 for arranging the exciter 3 and the pneumatic adjusting part 4.

[0047] In a preferred embodiment, the exciter 3 is connected to the inner side wall of the shell 1 by an elastic member 7.

[0048] As shown in Figure 1 , the elastic member 7 is a spring, and the exciter 3 is elastically connected to the inner side wall of the shell 1 by four springs. By arranging the springs, the exciter 3 is suspended inside the shell 1, so that the exciter 3 can move a certain distance inside the shell 1 when vibrating, avoiding the exciter 3 from being burned out due to excessive pressure when in use, and the exciter 3 can move according to the expansion of the air bag body.

[0049] In a preferred embodiment, the first air bag body 41 and the second air bag body 42 are in communication with each other and are connected to the external air source 6 by the air pipe 5.

[0050] As shown in Figure 2 and Figure 4 , the first air bag body 41 and the second air bag body 42 are in communication with each other and are inflated / deflated by the same air pipe 5. In this embodiment, the pneumatic adjusting part 4 has a foldable structure and includes the first air bag body 41, a communication part, and the second air bag body 42 in communication with each other. In the initial uninflated state, the first air bag body 41 and the second air bag body 42 are parallel to each other and are located at both ends of the exciter 3, the communication part is located at one side of the exciter 3 and is perpendicular to the first air bag body 41 and the second air bag body 42, and the first air bag body 41 is connected to the external air source 6 by the air pipe 5. As shown in Figure 3 , in other embodiments, the exciter 3 can also be arranged between the first air bag body 41 and the second air bag body 42, and the edges of the first air bag body 41 and the second air bag body 42 can be welded to fix them, and the second air bag body 42 is connected to the external air source 6 by the air pipe 5.

[0051] In a preferred embodiment, the first air bag body 41 and the second air bag body 42 are independent of each other and are connected to the external air source 6 through the two air tubes 5 respectively.

[0052] As shown in Figure 5 and Figure 6 , the first air bag body 41 and the second air bag body 42 are independent of each other and are connected to the external air source 6 through the two air tubes 5 respectively, through the above setting, the first air bag body 41 and the second air bag body 42 can be inflated and deflated respectively, that is, when the first air bag body 41 is inflated and expanded, the second air bag body 42 is deflated and contracted, or when the first air bag body 41 is deflated and contracted, the second air bag body 42 is inflated and expanded, thereby compared with the first air bag body 41 and the second air bag body 42 being connected to each other, more adjustment modes of the vibrator 3 can be realized, and then more massage modes can be realized.

[0053] In a preferred embodiment, the pneumatic adjustment part 4 has a first state and a second state, when in the first state, the first air bag body 41 and the second air bag body 42 are inflated and expanded; when in the second state, the first air bag body 41 and the second air bag body 42 are deflated and contracted.

[0054] As shown in Figure 7 and Figure 8 , the pneumatic adjustment part 4 is inflated by using the external air source 6 through the air tube 5, that is, the above-mentioned first state, when the pneumatic adjustment part 4 is inflated and expanded, the first air bag body 41 and the second air bag body 42 can be respectively abutted against the comfort sponge 2 or the foam and the bottom of the shell 1, when the pneumatic adjustment part 4 is deflated and contracted, the gap between the vibrator 3 and the comfort sponge 2 or the foam and the bottom of the shell 1 appears again, that is, the above-mentioned second state, by setting the pneumatic adjustment part 4 and inflating / deflating the pneumatic adjustment part 4, the distance between the vibrator 3 and the open end of the shell 1 can be effectively changed, and then the contact force of the vibrator 3 with the human body when vibrating is different, and the massage force is changed.

[0055] In a preferred embodiment, the pneumatic adjustment part 4 has a third state and a fourth state, when in the third state, the first air bag body 41 is inflated and expanded, and the second air bag body 42 is deflated and contracted; when in the fourth state, the first air bag body 41 is deflated and contracted, and the second air bag body 42 is inflated and expanded.

[0056] As shown in Figure 9 and Figure 10As shown, when the first airbag 41 is inflated and the second airbag 42 is not inflated and is in a contracted state, i.e., the third state mentioned above, the vibrator 3 can be stretched away from the first airbag 41 through the elastic connection between it and the outer shell 1 when vibrating. The first airbag 41 can act as a buffer between the vibrator 3 and the comfort sponge 2 or foam. When the first airbag 41 is not inflated and is in a contracted state, and the second airbag 42 is inflated and is inflated, i.e., the fourth state mentioned above, the vibrator 3 is limited by the expansion of the second airbag 42 and abuts against the comfort sponge 2 or foam through the first airbag 41. When the vibrator 3 vibrates, it can be stretched closer to the comfort sponge 2 or foam through the elastic connection between it and the outer shell 1, thereby increasing the contact force with the human body and making the massage force in the fourth state greater than that in the third state.

[0057] In a preferred embodiment, a controller 8 is further included, which is used to control the opening and closing of the air passage of the trachea 5 to control the inflation / deflation of the first airbag 41 and the second airbag 42.

[0058] like Figure 11 As shown, the controller 8 is located between the external air source 6 and the first airbag 41 and the second airbag 42. Its input end is connected to the external air source 6 through an air tube 5, and its two output ends are connected to the first airbag 41 and the second airbag 42 through two other air tubes 5 respectively. The controller 8 is electrically connected to a switch 9 and is connected to a power source through a wiring harness. The controller 8 can control the opening and closing of the air tubes 5 connected to the first airbag 41 and the second airbag 42 respectively, thereby realizing the simultaneous / separate inflation / deflation of the first airbag 41 and the second airbag 42.

[0059] Working principle: Initially, the pneumatic adjustment unit 4 is in a deflated and contracted state, i.e., the second state mentioned above. The vibrator 3 is activated, and it reciprocates along the first direction, transmitting the vibration to the outer shell 1 through the elastic connection with the outer shell 1 to massage the human body. The external air source 6 is then activated, simultaneously inflating the first airbag 41 and the second airbag 42, i.e., the first state mentioned above. After the first airbag 41 inflates, it causes the vibrator 3 to move away from the human body, thus reducing the vibration felt by the human body. If the second airbag 42 inflates to the bottom of the outer shell 1 at this time, the vibration of the vibrator 3... The amplitude of movement is further restricted, at which point the vibration felt by the human body is the weakest. The controller 8 controls the airway 5 to cause the second airbag 42 to deflate and contract, while the first airbag 41 remains inflated, which is the third state mentioned above. At this time, the vibrator 3 is farther away from the human body than in the second state. At the same time, due to the buffering effect of the first airbag 41, the vibration felt by the human body is smaller than in the second state. The second airbag 42 is inflated, while the first airbag 41 is deflated and contracted, which is the fourth state mentioned above. The vibrator moves closer to the human body, at which point the vibration felt by the human body is the greatest.

[0060] Example 2

[0061] This embodiment provides a passenger massage device, including the aforementioned pneumatic and mechanical linkage oscillation mechanism.

[0062] like Figures 12-14 As shown, the occupant massage device includes a seat frame, a backrest 11, a seat cushion 12, and a leg support pad 13. The backrest 11, seat cushion 12, and leg support pad 13 each have multiple mounting slots for placing the vibration mechanism. The slot openings are covered with a covering layer made of an elastic material, such as comfort sponge 2 or a combination of comfort sponge 2 and seat cover 10, to increase massage comfort. By separately mounting the vibration mechanism on the backrest 11, seat cushion 12, and leg support pad 13, different parts of the user's body can be massaged separately. In other embodiments of this application, such as... Figure 15 As shown, a mounting groove can also be provided on the foot pedal 14 to place the vibration mechanism, thereby enabling foot massage.

[0063] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. The above descriptions are only preferred embodiments of this application. It should be noted that due to the limitations of written expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of this invention, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of this application.

Claims

1. A pneumatic and mechanical linkage oscillating mechanism provided in a mounting groove of a carrier, characterized in that, It comprises: a vibration exciter (3) arranged in the mounting groove, which can vibrate at a set frequency in the mounting groove; a pneumatic adjusting part (4) arranged on the side of the vibration exciter (3) close to and / or away from the mounting groove opening, which is a gas bag body with variable volume by charging and discharging, and is used to adjust the distance between the vibration exciter (3) and the mounting groove opening and transmit vibration.

2. A pneumatic and mechanical linkage oscillating mechanism according to claim 1, wherein, The pneumatic adjusting part (4) comprises a first gas bag body (41) covering one end of the vibration exciter (3) close to the mounting groove opening and a second gas bag body (42) covering one end of the vibration exciter (3) away from the mounting groove opening.

3. A pneumatic and mechanical linkage oscillating mechanism according to claim 2, wherein, It further comprises a housing (1) with an open end corresponding to the mounting groove opening, which has a first space inside, and the vibration exciter (3) and the pneumatic adjusting part (4) are arranged in the first space.

4. A pneumatic and mechanical linkage oscillating mechanism according to claim 3, wherein, An elastic member (7) is connected between the vibration exciter (3) and the inner side wall of the housing (1).

5. A pneumatic and mechanical linkage oscillating mechanism according to claim 4, wherein, The first gas bag body (41) and the second gas bag body (42) are in communication with each other and connected to an external air source (6) through an air pipe (5).

6. A pneumatic and mechanical linkage oscillating mechanism according to claim 4, wherein, The first gas bag body (41) and the second gas bag body (42) are independent of each other and connected to an external air source (6) through an air pipe (5) respectively.

7. A pneumatic and mechanical linkage oscillating mechanism according to claim 5 or 6, wherein The pneumatic adjusting part (4) has a first state and a second state, when in the first state, the first gas bag body (41) and the second gas bag body (42) are inflated and expanded; when in the second state, the first gas bag body (41) and the second gas bag body (42) are deflated and contracted.

8. A pneumatic and mechanical linkage oscillating mechanism according to claim 6, wherein, The pneumatic adjusting part (4) has a third state and a fourth state, when in the third state, the first gas bag body (41) is inflated and expanded, and the second gas bag body (42) is deflated and contracted; when in the fourth state, the first gas bag body (41) is deflated and contracted, and the second gas bag body (42) is inflated and expanded.

9. A pneumatic and mechanical linkage oscillating mechanism according to claim 5 or 6, wherein It further comprises a controller (8) for controlling the on-off of the air path of the air pipe (5) to control the inflation / deflation of the first gas bag body (41) and the second gas bag body (42).

10. A passenger massaging device characterized by comprising: It comprises a pneumatic and mechanical linkage oscillation mechanism as claimed in any one of claims 1-9. It comprises a pneumatic and mechanical linkage oscillation mechanism as claimed in any one of claims 1-9.

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