Rotatable oscillating linearly movable transmission mechanism

Abstract

The utility model relates to a kind of transmission mechanism of rotatable swing can linearly move.Compared with prior art, the utility model is set up long hole on swing lever, and rack structure is equipped on the side long side in long hole.Not complete gear has tooth area and toothless area in periphery, and not complete gear is as driving wheel, swing lever is as driven piece, through the cooperation of different positions of swing lever and not complete gear and the rotation guide and linear guide function of supplementary guide plate, swing lever rotation swing and linear movement two transmission modes can be realized.The transmission mechanism can use a set of driving unit to realize two transmission modes, and the switching of rotation swing and linear movement two transmission modes can be carried out.The transmission mechanism skillfully realizes two transmission modes, reduces the number of parts and reduces product volume, and can greatly reduce manufacturing cost, can complete station conversion in device, object transfer in device and device product state switching and other functions.

Description

Technical Field

[0001] This utility model relates to the field of mechanical transmission technology, and in particular to a transmission mechanism that can rotate, swing, and move linearly. Background Technology

[0002] In the field of mechanical transmission, one transmission method often requires one motor and one transmission structure, while more than one transmission method requires more than one transmission structure and multiple corresponding motors, as well as complex switching devices or control systems.

[0003] In related technologies, some devices or products include multiple sets of transmission mechanisms with different transmission methods and corresponding drive control mechanisms. When the device or product is used in various application scenarios with different transmission methods, multiple sets of transmission mechanisms need to be used in combination to realize the corresponding transmission methods. Moreover, the multiple sets of transmission mechanisms need to be driven and controlled separately by corresponding drive control mechanisms, resulting in high manufacturing costs for the device or product. Summary of the Invention

[0004] The purpose of this invention is to overcome the defects of the existing technology and provide a transmission mechanism that can rotate, swing, and move linearly.

[0005] The objective of this utility model can be achieved through the following technical solutions:

[0006] This utility model provides a transmission mechanism that can rotate, swing, and move linearly, including a swing arm and an incomplete gear;

[0007] The outer periphery of the incomplete gear is a toothed area and a toothless area; an elongated hole is provided on the rocker arm along its length, and a rack structure is provided on one long side of the elongated hole; the incomplete gear is the driving gear, and the rocker arm is the driven member; when the toothed area meshes with the rack structure, the rotation of the incomplete gear drives the rocker arm to move in a straight line.

[0008] The elongated hole is provided at one end of the swing arm, and a first end face is formed at the end of the elongated hole near the swing arm; when the toothless area abuts against the first end face, the teeth of the toothed area hook the swing arm, so that the rotation of the incomplete gear drives the swing arm to rotate and swing.

[0009] Compared with the prior art, this utility model has an elongated hole on the swing arm, and a rack structure is set on the long side of the elongated hole. Through the cooperation of the tooth area of ​​the incomplete gear and the rack structure, the swing arm can be moved linearly by the rotation of the incomplete gear. On the other hand, through the toothless area of ​​the incomplete gear abutting against the first end face, and the tooth area cooperating with the rack structure, the swing arm can also be rotated and oscillated by the rotation of the incomplete gear. This set of transmission mechanisms uses the incomplete gear and the swing arm to perform both rotational oscillation and linear movement of the swing arm. That is, two transmission methods can be realized with one set of transmission mechanisms, and the two transmission methods of rotational oscillation and linear movement can be switched. This can reduce the number of parts, simplify the structure, reduce manufacturing costs, and complete the conversion of work positions, the transfer of objects in the device, and the switching of product status in the device.

[0010] Preferably, the transmission mechanism further includes a guide plate for cooperating with the swing arm to realize the rotational swing action, the guide plate including a base plate, a protrusion block and a rotational guide block;

[0011] The protruding block and the rotating guide block are fixed on the base plate. The outer back surface of the first end face of the swing arm is a rotating arc surface. When the toothless area of ​​the incomplete gear abuts against the first end face, the center of the rotating arc surface is the center of the incomplete gear. The rotating arc surface can slide against the protruding block and the rotating guide block. The protruding block and the rotating guide block abut against the rotating arc surface to provide rotational guidance for the swing arm. The incomplete gear is rotated to drive the swing arm to rotate and swing.

[0012] Preferably, the guide plate is also used to cooperate with the swing arm to achieve linear movement. The guide plate also includes a guide wall fixed on the base plate. The wall surface of the guide wall is in the same direction as the linear movement direction of the swing arm. The outer back of the rack structure on the swing arm has an abutment surface for sliding against the guide wall. When the abutment surface abuts against the guide wall, the guide wall restricts the swing arm's rotation and swing, thereby guiding the swing arm to move linearly.

[0013] Preferably, the rotating guide block has a guide arc surface. When the toothless area abuts against the first end face, the rotating arc surface fits against the guide arc surface, and the guide arc surface and the rotating arc surface are concentric.

[0014] The rotating guide block is also fixedly connected to the guide wall. One end of the guide arc surface is connected to the wall surface of the guide wall. The tangential direction of the guide arc surface at the position where it connects to the guide wall is consistent with the direction of the wall surface of the guide wall. The rotating arc surface is connected to the abutment surface. The tangential direction of the rotating arc surface at the position where it connects to the abutment surface is the direction of the abutment surface.

[0015] Compared with the prior art, in the present invention, when the gear is in partial contact with the first end face, the rotating arc surface of the swing arm end fits against the guide arc surface on the guide plate, which can ensure the correctness of the swing arm's rotation and swing, and prevent the swing arm from malfunctioning. In addition, when the contact surface of the swing arm abuts against the guide wall on the guide plate, it can restrict and guide the swing arm to move in a straight line, ensuring the stability of the swing arm's straight line movement.

[0016] Preferably, in the toothless abutment state of the first end face, the protrusion is located outside the rotating arc surface and is tangent to the rotating arc surface; The rotating arc surface is provided with a notch for the protrusion to pass through. When the contact surface abuts against the guide wall, the protrusion is directly opposite the notch. When the swing rod moves in a straight line, the protrusion passes through the notch.

[0017] Preferably, the protrusion has a concave arc surface, and the center of the concave arc surface and the center of the guide arc surface are the same; when the toothless area abuts against the first end face, the rotating arc surface also fits against the concave arc surface.

[0018] Compared with the prior art, in the present invention, when the gear is not fully in contact with the first end face, the rotating arc surface of the swing arm end fits against the concave arc surface on the guide plate, further ensuring the correctness of the swing arm's rotation and oscillation, and preventing malfunctions of the swing arm.

[0019] Preferably, the transmission mechanism further includes a drive unit, and the center of the incomplete gear is provided with a single flat shaft hole. The incomplete gear is sleeved on the single flat output shaft of the drive unit through the single flat shaft hole, and the incomplete gear is concentric with the single flat output shaft, so that the drive unit acts as a power output source to drive the incomplete gear to rotate synchronously, and the rotation of the incomplete gear drives the rocker arm to move.

[0020] Preferably, the base plate is fixed to the output shaft end face of the drive unit, the rocker arm abuts against the base plate, the elongated hole has a recessed step corresponding to the toothless area at the hole edge away from the base plate, and there is an overlapping edge above the toothless area, the overlapping edge overlaps and matches the recessed step, the top of the single flat output shaft has an internal threaded hole; and the overlapping edge is threaded and pressed against the recessed step by a pan head screw through a flat washer and the internal threaded hole, so as to block the rocker arm and prevent the rocker arm from detaching from the base plate.

[0021] Preferably, the drive unit is a geared motor.

[0022] Preferably, the teeth of the arc-length toothed region are arranged around the central axis of the incomplete gear outside the incomplete gear; the toothless region forms an arc surface around the central axis of the incomplete gear outside the incomplete gear; the teeth of the rack structure are arranged along the length direction of the rocker arm.

[0023] And / or, in the state where the toothless area abuts against the first end face, the teeth at one end of the toothed area engage with the teeth at one end of the rack structure, and the teeth at the other end of the toothed area rest on the sinking step on the swing arm. Attached Figure Description

[0024] Figure 1 This is an outline drawing of the rotatable, swingable, and linearly movable transmission mechanism of this utility model;

[0025] Figure 2 This is an external view of the swing arm in this utility model;

[0026] Figure 3 This is the external view of the incomplete gear in this utility model;

[0027] Figure 4 This is an external view of the guide plate in this utility model;

[0028] Figure 5 This is a diagram showing the utility model in a rotating and swinging state;

[0029] Figure 6 This is a diagram showing the state of the present invention in linear motion;

[0030] Figure 7 This is an exploded view of the transmission mechanism of this utility model, which can rotate, swing, and move linearly.

[0031] Reference numerals: 1. Rocker arm; 101. Long slot; 102. Rack structure; 103. First end face; 104. Abutment surface; 105. Rotating arc surface; 106. Notch; 107. Recessed step; 2. Incomplete gear; 201. Toothed area; 202. Toothless area; 203. Single flat shaft hole; 204. Overlapping edge; 3. Guide plate; 301. Base plate; 302. Guide wall; 303. Protrusion block; 304. Rotating guide block; 305. Concave arc surface; 306. Guide arc surface; 4. Drive unit; 401. Output shaft end face; 402. Single flat output shaft; 403. Threaded hole; 5. Countersunk screw; 6. Flat washer; 7. Pan head screw. Detailed Implementation

[0032] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. This embodiment is based on the technical solution of the present invention and provides detailed implementation methods and specific operating procedures; however, the scope of protection of the present invention is not limited to the following embodiments.

[0033] This specification provides an embodiment of a transmission mechanism that can rotate, swing, and move linearly, such as... Figure 1 , Figure 2 as well as Figure 3As shown, the device includes a rocker arm 1 and an incomplete gear 2. The incomplete gear 2 has a toothed area 201 and a toothless area 202 on its periphery. An elongated hole 101 is provided along the length of the rocker arm 1, and a rack structure 102 is located on one long side of the elongated hole 101. The incomplete gear 2 is the driving gear, and the rocker arm 1 is the driven member. When the toothed area 201 meshes with the rack structure 102, the rotation of the incomplete gear 2 causes the rocker arm 1 to move linearly. The periphery of the incomplete gear 2 consists of a toothed area 201 with an arc length of 210° and a toothless area 202 with an arc length of 150°, so that the arc-shaped toothed area 202 and the toothless area 202 together form the outer circumference of the incomplete gear 2. Furthermore, the central axis of the incomplete gear 2 is perpendicular to the length direction of the rocker arm 1. The incomplete gear 2, as the driving gear, drives the driven rack structure 102, thereby further driving the rocker arm 1 to move.

[0034] An elongated hole 101 is provided at one end of the rocker arm 1, and a first end face 103 is formed at the end of the elongated hole 101 near the rocker arm 1. When the toothless region 202 abuts against the first end face 103, the teeth of the toothed region 201 engage the rocker arm 1, which is used to drive the rocker arm 1 to rotate and swing when the incomplete gear 2 rotates. The other end of the rocker arm 1 serves as the rocker arm end. The incomplete gear is a specially shaped half gear, which can have a structure where the outer part has teeth and the outer part has no teeth.

[0035] In one embodiment, the swing arm 1 requires the cooperation of the guide plate 3 to achieve both rotational swing and linear movement. The transmission mechanism also includes the guide plate 3 for cooperating with the swing arm 1 to achieve the rotational swing action. The guide plate 3 includes a base plate 301, a protrusion 303, and a rotational guide block 304.

[0036] The protrusion 303 and the rotating guide block 303 are fixed on the base plate 301. The outer back of the first end face 103 on the rocker arm 1 is a rotating arc surface 105. When the toothless area 202 of the incomplete gear 2 abuts against the first end face 103, the center of the rotating arc surface 105 is the center of the incomplete gear 2. The rotating arc surface 105 can slide against the protrusion 303 and the rotating guide block 304. The maximum central angle formed by the positions of the protrusion 303 and the rotating guide block 304 abutting against the rotating arc surface 105 and the center of the rotating arc surface 105 is greater than 90 degrees and less than 180 degrees, so that the protrusion 303 and the rotating guide block 304 abut against the rotating arc surface 105 and provide rotational guidance for the rocker arm 1, rotating the incomplete gear 2 to drive the rocker arm 1 to rotate and swing. The maximum central angle can be 135 degrees.

[0037] In one embodiment, the guide plate 3 is also used to cooperate with the swing arm 1 to achieve linear movement. The guide plate 3 also includes a guide wall 302 fixed on the base plate 301. The wall surface direction of the guide wall 302 is the same as the linear movement direction of the swing arm 1. The outer back side of the rack structure 102 on the swing arm 1 is formed with an abutment surface 104 for sliding against the guide wall 302. When the abutment surface 104 abuts against the guide wall 302, the guide wall 302 restricts the swing arm 1 to rotate and swing, thereby guiding the swing arm 1 to move linearly.

[0038] The other long side of the elongated hole 101 forms a sliding surface, which is slidably connected to the toothless area 202 of the incomplete gear 2.

[0039] In one embodiment, the rotating guide block 304 has a guide arc surface 306, the center of which is the center of the incomplete gear 2. When the toothless area 202 abuts against the first end face 103, the rotating arc surface 105 fits against the guide arc surface 306. The guide arc surface 306 and the rotating arc surface 105 are concentric. The guide arc surface (306) also plays a rotational guiding role when the rocker arm (1) rotates.

[0040] The rotating guide block 304 is also fixedly connected to the guide wall 302. One end of the guide arc surface 306 is connected to the wall surface of the guide wall 302. The tangential direction of the position where the guide arc surface 306 connects to the guide wall 302 is the direction of the wall surface of the guide wall 302. The rotating arc surface 105 connects to the abutment surface 104. The tangential direction of the position where the rotating arc surface 105 connects to the abutment surface 104 is the direction of the abutment surface 104. The rotating arc surface 105 can be, for example, a semi-circular surface, which slides and fits precisely with the arc surface.

[0041] In one embodiment, when the toothless area 202 abuts against the first end face 103, the protrusion 303 is located on the side of the rotating arc surface 105 away from the swing rod 1 in the linear movement direction, and is located outside the rotating arc surface 105 and tangent to the rotating arc surface 105.

[0042] The rotating arc surface 105 is provided with a notch 106 for the protrusion 303 to pass through. When the contact surface 104 abuts against the guide wall 302, the protrusion 303 is directly facing the notch 106. When the rocker arm 1 moves in a straight line, the protrusion 303 passes through the notch 106.

[0043] Specifically, there is a square notch 106 in the center of the semicircular surface. When the abutting surface 104 abuts against the guide wall 302, the protruding block 303 is directly opposite the square notch 106. When the rocker arm 1 moves in a straight line, the protruding block 303 passes through the square notch 106. In one embodiment, the protruding block has a concave arc surface, and the centers of the concave arc surface 305 and the guide arc surface 306 are the same. When the toothless area 202 abuts against the first end face 103, the rotating arc surface 105 also fits against the concave arc surface 305 and the guide arc surface 306.

[0044] The central axes of the concave arc surface 305, the guide arc surface 306, and the rotating arc surface 105 are all the central axes of the incomplete gear.

[0045] In one embodiment, the transmission mechanism further includes a drive unit 4. The center of the incomplete gear 2 is provided with a single flat shaft hole 203. The incomplete gear 2 is sleeved on the single flat output shaft 402 of the drive unit 4 through the single flat shaft hole 203. The incomplete gear 2 and the single flat output shaft 402 are concentric and coaxial, so that the drive unit 4 acts as a power output source to drive the incomplete gear 2 to rotate synchronously. The rotation of the incomplete gear 2 drives the rocker arm 1 to move.

[0046] In one embodiment, the base plate 301 is fixed on the output shaft end face 401 of the drive unit 4, the rocker arm 1 abuts against the base plate 301, and a recessed step 107 corresponding to the toothless area 202 is formed at the edge of the elongated hole 101 away from the hole of the base plate 301. There is an overlapping edge 204 above the toothless area 202, and the overlapping edge 204 overlaps and matches the recessed step 107. The top of the single flat output shaft 402 has an internal threaded hole 403. The overlapping edge 204 is threaded and pressed onto the recessed step 107 by passing through the flat washer 6 with the pan head screw 7 and the internal threaded hole 403, so as to press the rocker arm 1 and prevent the rocker arm 1 from detaching from the base plate 301.

[0047] For example, the base plate 301 is fixed to the output shaft end face 401 of the drive unit 4 by two countersunk screws 5.

[0048] In one embodiment, the drive unit 4 is a geared motor.

[0049] In one embodiment, the teeth of the arc-shaped toothed region 201 are arranged around the central axis of the incomplete gear 2 outside the incomplete gear 2; the central angle of the toothed region 201 is 210 degrees; the toothless region 202 forms an arc surface around the central axis of the incomplete gear 2 outside the incomplete gear 2, and the central angle of the toothless region 202 is 150 degrees; the teeth of the rack structure 102 are arranged along the length direction of the rocker arm 1.

[0050] And / or, in the state where the toothless region 202 abuts against the first end face 103, the teeth at one end of the toothed region 201 engage with the teeth at one end of the rack structure 102, and the teeth at the other end of the toothed region 201 rest on the sinking step 107 on the slide rod 1.

[0051] The end of the elongated hole 101 away from the rocker arm 1 has a second end face. When the toothless area 202 abuts against the second end face, the teeth at the other end of the toothed area 201 engage with the teeth at the other end of the rack structure 102.

[0052] Figure 1 The complete appearance view of this utility model includes a rocker arm 1, an incomplete gear 2, a guide plate 3, and a drive unit 4.

[0053] Figure 2 The diagram shows the outline of the rocker arm 1. An elongated hole 101 is provided along the length of the rocker arm 1, and a rack structure 102 is located on one long side of the elongated hole 101. The elongated hole 101 is located near one end of the rocker arm 1, and a first end face 103 is formed at the end of the elongated hole 101 near the rocker arm 1. The outer back side of the elongated hole 101 is an abutting surface 104 opposite to the outer back side of the rack structure 102. The outer back side of the end of the elongated hole 101 is a semi-circular rotating arc surface 105, with a square notch 106 at the center of the semi-circular surface.

[0054] Figure 3 The structure of each part of the incomplete gear 2 is as follows: toothed area 201, toothless area 202, single flat shaft hole 203, and overlapping edge 204.

[0055] Figure 4 The guide plate consists of three parts: base plate 301, guide wall 302, protrusion block 303, rotating guide block 304, concave arc surface 305, and guide arc surface 306.

[0056] like Figure 5 As shown, the toothless region 202 of the incomplete gear abuts against the first end face 103, the semicircular surface of the rocker arm 1 is in contact with the two arc-shaped surfaces on the guide plate 3, and the centers of the rotating arc surface 105 and the two arc-shaped surfaces are concentric with the center of the incomplete gear 2. Therefore, in Figure 5 In this state, the two arc-shaped surfaces on the guide plate 3 have a restrictive guiding effect on the rocker arm 1. Under this restrictive guiding effect, the rocker arm 1 can only rotate and swing around the center of the incomplete gear 2 as the incomplete gear 2 rotates.

[0057] like Figure 6 As shown: When the swing arm 1 rotates and swings until the first bottom interface 104 abuts against the guide wall 302 on the guide plate 3, the guide wall 302 will restrict the swing arm 1 from continuing to rotate and swing, thus guiding it to move in a straight line. At the same time, the protrusion 303 on the guide plate 3 can also enter and exit through the square notch 106 on the swing arm 1.

[0058] Figure 7The transmission mechanism is shown to consist of a rocker arm 1, an incomplete gear 2, a guide plate 3, a drive unit 4, countersunk screws 5, flat washers 6, and pan head screws 7. First, the guide plate 3 is fixed to the output shaft end face 401 using countersunk screws 5, utilizing two screw holes; the remaining two screw holes are reserved for securing the entire transmission mechanism. The rocker arm 1 rests against the base plate 301 of the guide plate 3. The incomplete gear 2 is fitted onto the single flat output shaft 402 of the drive unit 4 and fixed in the internal threaded hole 403 using pan head screws 7 and flat washers 6. The overlapping edge 204 on the incomplete gear 2 overlaps with the recessed step 107 on the rocker arm 1, preventing the rocker arm 1 from dislodging during movement. When the rocker arm 1, incomplete gear 2, and guide plate 3 are used together, the incomplete gear 2 acts as the driving wheel, the rocker arm 1 as the driven member, and the guide plate 2 guides the movement. The rocker arm 1 can achieve rotational oscillation and linear movement at different positions.

[0059] This utility model has two motion modes, thus realizing two transmission methods of rotational swing and linear movement with only one geared motor and one set of mechanical structure. The two transmission methods can be realized with only one motor or power device, reducing the number of parts, reducing the size and reducing the cost.

[0060] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A transmission mechanism that can rotate, swing, and move linearly, characterized in that, Includes a rocker arm (1) and an incomplete gear (2); The incomplete gear (2) has a toothed area (201) and a toothless area (202) on its periphery; the rocker arm (1) has an elongated hole (101) along its length direction, and a rack structure (102) is provided on one long side of the elongated hole (101); the incomplete gear (2) is the driving gear, and the rocker arm (1) is the driven member; when the toothed area (201) meshes with the rack structure (102), the rotation of the incomplete gear (2) drives the rocker arm (1) to move in a straight line; The elongated hole (101) is provided at one end of the swing rod (1), and a first end face (103) is formed at the end of the elongated hole (101) near the swing rod (1); when the toothless area (202) abuts against the first end face (103), the teeth of the toothed area (201) hook the swing rod (1) so that the rotation of the incomplete gear (2) can drive the swing rod (1) to rotate and swing.

2. The rotatable, oscillating, and linearly movable transmission mechanism according to claim 1, characterized in that, The transmission mechanism also includes a guide plate (3) for cooperating with the swing arm (1) to realize the rotational swing action. The guide plate (3) includes a base plate (301), a protrusion (303) and a rotating guide block (304). The protrusion (303) and the rotating guide block (304) are fixed on the base plate (301). The outer back of the first end face (103) on the swing rod (1) is a rotating arc surface (105). When the toothless area (202) abuts against the first end face (103), the center of the rotating arc surface (105) is the center of the incomplete gear (2). The rotating arc surface (105) can slide against the protrusion (303) and the rotating guide block (304). The protrusion (303) and the rotating guide block (304) abut against the rotating arc surface (105) to rotate and guide the swing rod (1). The incomplete gear (2) is rotated to drive the swing rod (1) to rotate and swing.

3. The rotatable, oscillating, and linearly movable transmission mechanism according to claim 2, characterized in that, The guide plate (3) is also used to cooperate with the swing rod (1) to achieve linear movement. The guide plate (3) also includes a guide wall (302) fixed on the base plate (301). The wall direction of the guide wall (302) is the same as the linear movement direction of the swing rod (1). The outer back of the rack structure (102) on the swing rod (1) has an abutment surface (104) for sliding against the guide wall (302). When the abutment surface (104) abuts against the guide wall (302), the guide wall (302) restricts the swing rod (1) to rotate and swing, thereby guiding the swing rod (1) to move linearly.

4. The rotatable, oscillating, and linearly movable transmission mechanism according to claim 3, characterized in that, The rotating guide block (304) has a guide arc surface (306). When the toothless area (202) abuts against the first end face (103), the rotating arc surface (105) fits against the guide arc surface (306), and the guide arc surface (306) and the rotating arc surface (105) are concentric. The rotating guide block (304) is also fixedly connected to the guide wall (302). One end of the guide arc surface (306) is connected to the wall surface of the guide wall (302). The tangential direction of the guide arc surface (306) connecting to the guide wall (302) is consistent with the direction of the wall surface of the guide wall (302). The rotating arc surface (105) is connected to the abutment surface (104). The tangential direction of the rotating arc surface (105) connecting to the abutment surface (104) is the direction of the abutment surface (104).

5. The rotatable, oscillating, and linearly movable transmission mechanism according to claim 4, characterized in that, When the toothless area (202) abuts against the first end face (103), the protrusion (303) is located outside the rotating arc surface (105) and is tangent to the rotating arc surface (105); The rotating arc surface (105) is provided with a notch (106) for the protrusion (303) to pass through. When the contact surface (104) abuts against the guide wall (302), the protrusion (303) is facing the notch (106). When the swing rod (1) moves in a straight line, the protrusion (303) passes through the notch (106).

6. The rotatable, oscillating, and linearly movable transmission mechanism according to claim 4, characterized in that, The protrusion has a concave arc surface (305), and the center of the concave arc surface (305) and the center of the guide arc surface (306) are the same center; when the toothless area (202) abuts against the first end face (103), the rotating arc surface (105) also fits against the concave arc surface (305).

7. The rotatable, oscillating, and linearly movable transmission mechanism according to claim 2, characterized in that, The transmission mechanism also includes a drive unit (4). The center of the incomplete gear (2) is provided with a single flat shaft hole (203). The incomplete gear (2) is sleeved on the single flat output shaft (402) of the drive unit (4) through the single flat shaft hole (203). The incomplete gear (2) and the single flat output shaft (402) are concentric, so that the drive unit (4) acts as a power output source to drive the incomplete gear (2) to rotate synchronously. The rotation of the incomplete gear (2) drives the rocker arm (1) to move.

8. The rotatable, oscillating, and linearly movable transmission mechanism according to claim 7, characterized in that, The base plate (301) is fixed on the output shaft end face (401) of the drive unit (4). The swing arm (1) abuts against the base plate (301). The elongated hole (101) forms a recessed step (107) corresponding to the toothless area (202) at the hole edge away from the base plate (301). There is an overlapping edge (204) above the toothless area (202). The overlapping edge (204) overlaps and matches the recessed step (107). The top of the single flat output shaft (402) has an internal threaded hole (403). The overlapping edge (204) is threaded and pressed against the recessed step (107) by passing through the flat washer (6) through the pan head screw (7) and the internal threaded hole (403) to block the swing arm (1) and prevent the swing arm (1) from detaching from the base plate (301).

9. The rotatable, oscillating, and linearly movable transmission mechanism according to claim 8, characterized in that, The drive unit (4) is a geared motor.

10. The rotatable, oscillating, linearly movable transmission mechanism according to any one of claims 1 to 9, characterized in that, The teeth of the toothed area (201) are arranged around the central axis of the incomplete gear (2) outside the incomplete gear (2); the toothless area (202) forms an arc surface around the central axis of the incomplete gear (2) outside the incomplete gear (2); the teeth of the rack structure (102) are arranged along the length direction of the rocker arm (1). And / or, when the toothless area (202) abuts against the first end face (103), the teeth at one end of the toothed area (201) engage with the teeth at one end of the rack structure (102), and the teeth at the other end of the toothed area (201) rest on the sinking step (107) on the swing arm (1).

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