CN215059263U

CN215059263U - Transmission mechanism

Info

Publication number: CN215059263U
Application number: CN202120940510.2U
Authority: CN
Inventors: 傅珂珂; 李进
Original assignee: Yongkang Guangyi Technology Co ltd
Current assignee: Yongkang Guangyi Technology Co ltd
Priority date: 2021-04-30
Filing date: 2021-04-30
Publication date: 2021-12-07
Anticipated expiration: 2031-04-30
Also published as: WO2022228466A1

Abstract

The application relates to a transmission mechanism, reciprocating shaft is last to be provided with reciprocating groove, and reciprocating body locates reciprocating shaft one end, spheroid be configured into spacing in reciprocating body with between the reciprocating groove, and roll connection in reciprocating body with reciprocating groove. The reciprocating groove surrounds the axis of the reciprocating shaft and is provided with a closed path, so that the reciprocating body can be axially displaced relative to the reciprocating shaft in the rotating process. The transmission mechanism is in rolling connection with the reciprocating groove through the ball body, rolling friction is far smaller than sliding friction, and abrasion of the ball body and the reciprocating groove is reduced.

Description

Transmission mechanism

Technical Field

The application relates to the technical field of mechanical transmission, in particular to a transmission mechanism suitable for converting rotary motion into linear reciprocating motion.

Background

In the mechanical field it is often necessary to convert a rotary motion into a linear reciprocating motion. In the prior art, a device for realizing the motion conversion is provided, and the device realizes that the rotation of the rotating shaft is converted into the linear reciprocating motion of the reciprocating shell by arranging a guide groove on the rotating shaft and arranging a pin which is in sliding connection with the guide groove and fixed in the reciprocating shell.

However, in the prior art, when the power of the rotating shaft is larger, the abrasion of the workpiece is larger.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is necessary to provide a transmission mechanism suitable for different powers and reducing wear, aiming at the problem of excessive wear of the workpiece when the rotating shaft is under high power.

According to one aspect of the present application, there is provided a transmission mechanism comprising:

the reciprocating shaft is provided with a reciprocating groove;

the reciprocating body is arranged at one end of the reciprocating shaft;

the transmission mechanism further includes:

a ball configured to be confined between the reciprocating body and the reciprocating groove and to be roll-connected to the reciprocating body and the reciprocating groove; and

the reciprocating groove surrounds the axis of the reciprocating shaft and is provided with a closed path, so that the reciprocating body can be axially displaced relative to the reciprocating shaft in the rotating process.

The transmission mechanism is in rolling connection with the reciprocating groove through the ball body, rolling friction is far smaller than sliding friction, and abrasion of the ball body and the reciprocating groove is reduced.

In one embodiment, the reciprocating body is slidably connected with the outer side wall of the reciprocating shaft; or

The reciprocating body and the reciprocating shaft are arranged at intervals.

In one embodiment, the transmission mechanism further comprises a ball support;

the ball support is fixed on the reciprocating body through a clamp spring or a screw, and the ball body is connected between the ball support and the reciprocating groove in a rolling mode.

In one embodiment, the reciprocating shaft has a first symmetrical plane passing through the axis thereof;

the reciprocating grooves comprise a plurality of grooves, each reciprocating groove is provided with a second symmetrical surface along the lengthwise extending direction of the reciprocating groove, the second symmetrical surfaces are obliquely arranged relative to the first symmetrical surfaces, and each reciprocating groove is respectively in rolling connection with one sphere.

In one embodiment, after rotating around the axis of the reciprocating shaft by a preset angle, one reciprocating groove coincides with the other reciprocating groove;

the plane where the central connecting lines of the spheres are located is vertical to the axis of the reciprocating shaft; or

The reciprocating grooves are distributed in parallel at intervals, and the central connecting lines of the spheres are parallel to the axis of the reciprocating shaft.

In one embodiment, the plurality of reciprocating slots are divided into two groups, and each group comprises a plurality of the reciprocating slots;

the group of reciprocating grooves is arranged at one end of the reciprocating shaft, and in the group of reciprocating grooves, one reciprocating groove is superposed with the other reciprocating groove after rotating around the axis of the reciprocating shaft for a preset angle; the plane where the central connecting lines of the corresponding spheres are located is vertical to the axis of the reciprocating shaft;

the other group of reciprocating grooves is arranged at the other end of the reciprocating shaft, a plurality of reciprocating grooves are distributed in the group of reciprocating grooves at intervals in parallel, and the central connecting line of the corresponding plurality of spheres is parallel to the axis of the reciprocating shaft.

In one embodiment, the number of the reciprocating grooves is one, and the track of the reciprocating groove is sinusoidal;

the track of the reciprocating groove comprises a plurality of complete sine curve cycles, and the number of the sine curve cycles forming the reciprocating groove is equal to the number of the spheres;

the plane where the central connecting lines of the spheres are located is perpendicular to the axis of the reciprocating shaft.

In one embodiment, the device further comprises a rear connection part, a front connection part, a sliding part and a linear guide structure;

the reciprocating shaft is rotatably connected to the rear connection, one end of the sliding part is fixed to one end, far away from the rear connection, of the reciprocating body, and the other end of the sliding part is connected to the front connection in a sliding mode;

the linear guide structure comprises a guide post and a sliding sleeve; the axis of the guide post is parallel to the axis of the reciprocating shaft, one end of the guide post is inserted into the rear connection, the other end of the guide post is inserted into the front connection, the sliding sleeve is fixed on the outer peripheral side of the reciprocating body, and the sliding sleeve is sleeved on the guide post and is in sliding connection with the guide post.

In one embodiment, the sliding part is configured to be cylindrical, and the axis of the sliding part is parallel to and does not coincide with the axis of the reciprocating shaft; or

The sliding part comprises a main body and a boss arranged on the main body, and the boss extends along the lengthwise direction of the sliding part.

In one embodiment, the reciprocating shaft comprises an inner sliding sleeve, the inner sliding sleeve is embedded in the inner side wall of the reciprocating body sleeve outside the reciprocating shaft, and the inner sliding sleeve is connected with the outer side wall of the reciprocating shaft in a sliding mode.

Drawings

FIG. 1 is a cross-sectional view of a transmission mechanism in an embodiment of the present application;

FIG. 2 is a top view of the reciprocating shaft of the embodiment of FIG. 1;

FIG. 3 is a left side view of the reciprocating shaft of the embodiment of FIG. 1;

FIG. 4 is a top view of a reciprocating shaft according to another embodiment of the present application;

FIG. 5 is a top view of a reciprocating shaft according to yet another embodiment of the present application;

FIG. 6 is a left side view of the reciprocating shaft of the embodiment of FIG. 5;

FIG. 7 is a top view of a reciprocating shaft according to an embodiment of the present application;

FIG. 8 is a top view of a reciprocating shaft according to another embodiment of the present application;

FIG. 9 is a top view of a reciprocating shaft according to yet another embodiment of the present application;

FIG. 10 is a top view of a drive mechanism according to an embodiment of the present application;

FIG. 11 is a left side view of the transmission mechanism of the embodiment of FIG. 10;

FIG. 12 is a left side view of the drive mechanism of an embodiment of the present application;

FIG. 13 is a top plan view of the transmission mechanism of the embodiment of FIG. 12;

figure 14 shows a plan view of a reciprocating body in an embodiment of the present application;

fig. 15 shows a cross-sectional view of a sliding part in another embodiment of the present application.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiments in many different forms than those described herein and that modifications may be made by one skilled in the art without departing from the spirit and scope of the application and it is therefore not intended to be limited to the specific embodiments disclosed below.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

At present, there are various mechanisms for converting rotary motion into linear reciprocating motion, and in the existing design, the mechanism for realizing the motion conversion mainly comprises a crank link mechanism, a gear rack mechanism, a lead screw, a cam mechanism and the like, and the mechanisms mainly have the problems of complex structure and poor stability. In order to solve the problems, a device for converting rotary motion into linear reciprocating motion is provided, the device is provided with a guide groove on a rotating shaft, a reciprocating shell is sleeved at one end of the rotating shaft, a pin is fixed in the reciprocating shell, when the rotating shaft rotates, the end face of the pin slides in the guide groove and drives the reciprocating shell to move along the axial direction, and the rotary motion of the rotating shaft is converted into the linear reciprocating motion of the reciprocating shell.

However, the above device for converting rotary motion into linear reciprocating motion is easy to cause workpiece abrasion when operated under high power. The inventors of the present application have found that the above problems occur because the frictional force of the contact surface has an important influence on the fatigue wear, and if the frictional force acts to cause the maximum shear stress to approach the surface, the possibility of crack generation increases, and the tensile stress caused by the frictional force accelerates the crack propagation, so that the sliding friction between the pin and the guide groove in the above-described device greatly increases the fatigue wear of the surfaces of both.

On the other hand, the magnitude of the contact stress has a great influence on fatigue wear, and since the force of the rotating shaft on the reciprocating housing acts on the end face of a single pin in the above device, the end face of the pin is stressed more when the power is increased, and the wear is accelerated.

Therefore, there is a need for a transmission mechanism that is adaptable to different powers and that reduces wear.

FIG. 1 illustrates a cross-sectional view of a transmission mechanism in an embodiment of the present application; FIG. 2 shows a top view of the reciprocating shaft of the embodiment of FIG. 1; figure 3 shows a left side view of the reciprocating shaft of the embodiment of figure 1. For ease of description and understanding, the drawings show only the structures relevant to the present application.

Referring to fig. 1 to 3, the transmission mechanism in one embodiment of the present application includes a rear connection 1, a reciprocating shaft 3, a ball 4, a ball support 5, a reciprocating body 6, a sliding portion 7, and a front connection 9.

The reciprocating shaft 3 is rotatably connected to the rear connection 1. Specifically, a through hole is formed in the center of the rear connection 1, and the reciprocating shaft 3 penetrates through the through hole to realize the rotary connection of the reciprocating shaft 3 and the rear connection. In some embodiments, the through hole is a circular hole, and the cross-sectional shape of the reciprocating shaft 3 is adapted to the shape and size of the circular hole and is rotatably connected in the circular hole. In other embodiments, the rotational connection with the rear connection 1 can also be realized through the rear bearing 2, which is not limited herein.

The reciprocating body 6 is arranged at one end of the reciprocating shaft 3 far away from the rear connection 1 and is connected with the outer side wall of the reciprocating shaft 3 in a sliding manner. Specifically, the inner sliding sleeve 10 is embedded in the inner side wall of the reciprocating body 6 and is in sliding connection with the outer side wall of the reciprocating shaft 3, so that the inner sliding sleeve can be replaced to prevent the abrasion failure of the reciprocating body due to the abrasion of the reciprocating shaft of the reciprocating body 6, and the reliability of the transmission mechanism is improved. In particular, in some embodiments, the inner sliding sleeve 10 may be a sliding and rolling standard member capable of supporting a reciprocating motion, such as a wear-resistant steel sleeve, a copper sleeve, a composite bearing, an oilless bushing, and a linear bearing, so as to reduce a frictional resistance between the reciprocating body 6 and the reciprocating shaft 3.

One end of the sliding part 7 is fixed at one end of the reciprocating body 6 far away from the rear connection 1, and the other end of the sliding part 7 is connected with the front connection 9 in a sliding manner. As a preferred embodiment, the sliding part 7 is in sliding connection with the front connection 9 via a front bearing 8 to reduce frictional resistance and surface wear.

The reciprocating shaft 3 is provided with a reciprocating groove 12, the ball support 5 is fixed on the reciprocating body 6, and the ball body 4 is configured to be limited between the ball support 5 and the reciprocating groove 12 and is connected with the ball support 5 and the reciprocating groove 12 in a rolling manner. In some embodiments, the ball support 5 may be fixed to the reciprocating body 6 by a snap spring 11, as shown in fig. 1. In other embodiments, the ball support 5 can be fixed on the reciprocating body 6 by a screw or a ring.

The reciprocating groove 12 surrounds the axis of the reciprocating shaft 3 and has a closed path so that the reciprocating body 6 has a displacement in the axial direction during the rotation relative to the reciprocating shaft 3. In some embodiments, the reciprocating shaft 3 has a first plane of symmetry passing through its axis, and the reciprocating groove 12 has a second plane of symmetry along its longitudinal extension, said second plane of symmetry being disposed obliquely with respect to said first plane of symmetry, as shown in fig. 2. Thus, since the ball 4 is limited between the ball support 5 and the reciprocating groove 12, when the reciprocating shaft 3 rotates, the ball 4 moves along the reciprocating groove 12 relative to the reciprocating shaft 3, and the relative movement causes the ball 4 to have axial displacement, thereby driving the ball support 5 and the reciprocating body 6 to move along the axis of the reciprocating shaft. Illustratively, when the ball 4 moves from the lowest point to the highest point of the reciprocating groove 12, the reciprocating body 6 extends in a direction away from the rear connection 1, and when the ball 4 moves from the highest point to the lowest point of the reciprocating groove 12, the reciprocating body 6 retracts in a direction towards the rear connection 1, so that the reciprocating body 6 continuously outputs linear reciprocating motion through continuous unidirectional rotation of the reciprocating shaft 3.

It will be appreciated that the ball 4 and the ball support 5 and the reciprocating groove 12 are rolling friction, which is much less than sliding friction, and therefore the friction of the workpiece contact surface is less, thereby reducing the formation of fatigue wear on the workpiece surface.

In some embodiments of the present application, the reciprocating groove 12 comprises a plurality of grooves, and each groove is in rolling connection with one ball 4. Therefore, the acting force of the reciprocating shaft 3 acts on the reciprocating body 6 through the plurality of balls 4, so that the acting force applied to a single ball is small, namely, the contact stress applied to each ball, the ball support and the corresponding reciprocating groove is small, and the abrasion is reduced. When the transmission mechanism works under high power, a large number of reciprocating grooves can be adopted, and when the transmission mechanism works under low power, a small number of reciprocating grooves can be adopted, so that the stress of a single ball 4 can be kept in a small range under different powers, and further the abrasion is reduced.

FIG. 4 illustrates a top view of a reciprocating shaft in an embodiment of the present application; FIG. 5 shows a top view of a reciprocating shaft in another embodiment of the present application; FIG. 6 illustrates a left side view of the reciprocating shaft illustrated in FIG. 5; figure 7 shows a top view of a reciprocating shaft in a further embodiment of the present application.

Referring to fig. 2 to 4, in some embodiments, the reciprocating grooves 12 include a plurality of grooves, one of the grooves is overlapped with another groove after rotating around the axis of the reciprocating shaft 3 by a predetermined angle, and a plane where the center lines of the plurality of balls 4 are located is perpendicular to the axis of the reciprocating shaft 3. It will be appreciated that the above-mentioned predetermined angle is inversely proportional to the number of reciprocating grooves, for example, when the reciprocating grooves 12 comprise two reciprocating grooves, as shown in fig. 2 and 3, one of the reciprocating grooves is rotated 180 ° around the axis of the reciprocating shaft 3 and then coincides with the other reciprocating groove; when the reciprocating groove 12 includes four reciprocating grooves, as shown in fig. 4, after any one of the reciprocating grooves rotates by 90 ° around the axis of the reciprocating shaft 3, it coincides with another reciprocating groove, and so on.

In addition, the centers of the plurality of spheres 4 are all located on the same plane, and the plane is parallel to the axis of the reciprocating shaft 3, so when the reciprocating shaft 3 rotates, the displacements of the plurality of spheres 4 along the axis direction of the reciprocating shaft 3 are always the same, and the axial reciprocating motion of the reciprocating body 6 is realized. In a preferred embodiment, the reciprocating shaft 3 may be provided with a plurality of ventilation and oil-through grooves 13 parallel to its own axis, so that the friction between the balls 4 and the reciprocating grooves 12 is reduced by gas or liquid lubrication, thereby further reducing the wear of the balls 5 and the reciprocating grooves 12.

Referring to fig. 5, in other embodiments, the reciprocating grooves 12 are spaced in parallel, and the center line of the spheres 4 is parallel to the axis of the reciprocating shaft 3. Specifically, the reciprocating groove 12 may include two parallel reciprocating grooves spaced apart from each other, as shown in fig. 5 and 6, and a central connecting line of the two spheres 4 is parallel to the axis and jointly bears a force for axially reciprocating the reciprocating body 6.

It will be appreciated that the reciprocating slots may be arranged in other ways, for example, in still other embodiments, the reciprocating slots 12 are divided into two groups, each group including a plurality of reciprocating slots. As shown in fig. 7, a set of reciprocating grooves 12 is disposed at one end of the reciprocating shaft 3, and in the set of reciprocating grooves 12, after one reciprocating groove rotates a preset angle around the axis of the reciprocating shaft 3, it coincides with the other reciprocating groove, and the plane where the central connecting lines of the corresponding spheres 4 are located is perpendicular to the axis of the reciprocating shaft 3. The other set of reciprocating grooves 12 is disposed at the other end of the reciprocating shaft 3, and in the set of reciprocating grooves 12, a plurality of reciprocating grooves are distributed in parallel at intervals, and the central connecting line of the corresponding plurality of spheres 4 is parallel to the axis of the reciprocating shaft 3. Through setting up two sets of reciprocating grooves 12 in the different parts of reciprocating shaft 3, make reciprocating grooves 12 can include more quantity, correspondingly, including more spheroid 4 bear the atress of reciprocating body 6 jointly, make drive mechanism can work under bigger power.

FIG. 8 illustrates a top view of a reciprocating shaft in an embodiment of the present application; figure 9 shows a top view of a reciprocating shaft in another embodiment of the present application.

Referring to fig. 8 and 9, in some embodiments, there is one reciprocating groove 12, and the track of the reciprocating groove 12 is sinusoidal, and the track of the reciprocating groove 12 includes a plurality of complete sinusoidal cycles, and the number of sinusoidal cycles constituting the reciprocating groove 12 is equal to the number of the spheres 4; and the plane of the central connecting line of the plurality of spheres 4 is vertical to the axis of the reciprocating shaft 3. In a particular embodiment, as shown in fig. 8, the trajectory of the reciprocating groove 12 comprises two complete sinusoidal cycles and the spheres 4 comprise two such that, during the unidirectional rotation of the reciprocating shaft 3, both spheres are at the lowest point of the sinusoidal curve when the reciprocating body 6 is located in its reciprocating trajectory closest to the rear connection 1 and both spheres are at the highest point of the sinusoidal curve when the reciprocating body 6 is located closest to the front connection 9. In another embodiment, as shown in FIG. 9, the trajectory of the reciprocating slots 12 comprises four complete sinusoidal cycles and the spheres 4 comprise four.

Fig. 10 shows a top view of the transmission mechanism in an embodiment of the present application, and fig. 11 shows a left side view of the transmission mechanism in the embodiment of fig. 10.

Referring to fig. 10 and 11, in some embodiments of the present invention, the reciprocating body 6 is disposed at one end of the reciprocating shaft 3 and spaced apart from the reciprocating shaft 3. In particular, the sphere 4 comprises two and is symmetrical with respect to the axis of the reciprocating shaft 3. Further, the reciprocating body 6 is constructed in a U-shaped structure, the reciprocating shaft 3 is located in the open end of the U-shaped structure, and two arms of the U-shaped structure are respectively provided with a hemispherical groove on a plane close to the reciprocating shaft 3, so that the sphere 4 is limited between the reciprocating body 6 and the reciprocating groove 12 and is connected with the reciprocating body 6 and the reciprocating groove 12 in a rolling manner. The reciprocating body 6 and the reciprocating shaft 3 are arranged at intervals, so that the structure of the transmission mechanism is simplified and the friction is reduced.

Fig. 12 shows a left side view of the transmission mechanism in an embodiment of the present application, and fig. 13 shows a top view of the transmission mechanism in the embodiment of fig. 12.

As shown in fig. 12 and 13, the transmission mechanism in one embodiment of the present application further includes a linear guide structure including a guide post 14 and a sliding sleeve 15. The axis of the guide post 14 is parallel to the axis of the reciprocating shaft 3, one end of the guide post 14 is inserted on the rear connector 1, and the other end of the guide post 14 is inserted on the front connector 9. The sliding sleeve 15 is fixed on the periphery of the reciprocating body 6, and the sliding sleeve 15 is sleeved on the guide post 14 and is connected with the guide post 14 in a sliding manner. Thus, when the reciprocating body 6 reciprocates, the sliding sleeve 15 reciprocates along the guide post 14. Through setting up guide post 14 and sliding sleeve 15, realize reciprocating body 6 along axial steady motion, avoid reciprocating body 6 to appear deflecting in reciprocating motion.

In some specific embodiments, the linear guide structure comprises a first guide post 14a, a second guide post 14b, a first sliding sleeve 15a and a second sliding sleeve 15 b. Further, the first guiding column 14a and the second guiding column 14b are symmetrically arranged about the reciprocating shaft 3, the first sliding sleeve 15a is sleeved on the first guiding column 14a, and the second sliding sleeve 15b is sleeved on the second guiding column 15 b. The transmission mechanism has higher stability by arranging a linear guide structure which is symmetrical about the axis of the reciprocating shaft 3.

Figure 14 shows a plan view of a reciprocating body in an embodiment of the present application; fig. 15 shows a cross-sectional view of a sliding part in another embodiment of the present application.

In some embodiments of the present application, as shown in fig. 14, the sliding portion 7 is configured to have a cylindrical shape, and an axis of the sliding portion 7 is parallel to and does not coincide with an axis of the reciprocating shaft 3. In other embodiments, the cross section of the sliding part 7 is as shown in fig. 13, the sliding part 7 includes a main body 16 and a boss 17 provided on the main body, and the boss 17 extends in the longitudinal direction of the sliding part 7. In other embodiments, the sliding portion 7 may be configured as any structure capable of preventing the reciprocating body 6 from deflecting, such as a rectangular parallelepiped, and is not limited herein. The sliding part 7 has a linear guiding function in the above mode, so that the reciprocating body 6 is prevented from deflecting in the motion, and the transmission mechanism is small in size and simple in structure while improving the stability.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A transmission mechanism, comprising:

the reciprocating shaft is provided with a reciprocating groove;

the reciprocating body is arranged at one end of the reciprocating shaft;

the transmission mechanism further includes:

2. The transmission mechanism according to claim 1, wherein the reciprocating body is slidably connected to an outer side wall of the reciprocating shaft; or

The reciprocating body and the reciprocating shaft are arranged at intervals.

3. The transmission mechanism as claimed in claim 1, further comprising a ball mount;

4. The transmission mechanism as claimed in claim 1, wherein the reciprocating shaft has a first plane of symmetry passing through its axis;

5. The transmission mechanism according to claim 4, wherein one of the reciprocating grooves is overlapped with the other reciprocating groove after rotating around the axis of the reciprocating shaft for a preset angle;

6. The transmission mechanism as claimed in claim 4, wherein the plurality of reciprocating slots are divided into two groups, each group including a plurality of the reciprocating slots;

7. The transmission mechanism according to claim 1, wherein the reciprocating groove is one, and a track of the reciprocating groove is sinusoidal;

8. The transmission mechanism as claimed in any one of claims 1 to 7, further comprising a rear link, a front link, a sliding portion and a linear guide structure;

9. The transmission mechanism according to claim 8, wherein the sliding portion is configured to have a cylindrical shape, and an axis of the sliding portion is parallel to and does not coincide with an axis of the reciprocating shaft; or

10. The transmission mechanism as claimed in claim 8, comprising an inner sliding sleeve embedded in an inner sidewall of the reciprocating body sleeve outside the reciprocating shaft, wherein the inner sliding sleeve is slidably connected with an outer sidewall of the reciprocating shaft.