Multi-degree-of-freedom mechanical arm for dynamic seat

Abstract

The utility model provides a multi-degree-of-freedom mechanical arm for a dynamic seat, and relates to the technical field of mechanical arms, the multi-degree-of-freedom mechanical arm comprises an integral structure and positioning structures, and the positioning structures are located at the front and back positions, close to the bottom, of the outer surfaces of the two sides of the integral structure; the overall structure comprises a base, sliding grooves are formed in the front positions and the rear positions of the two sides of the inner bottom of the base, sliding blocks are connected to the inner surface walls of the sliding grooves in a sliding mode, and first rotating shafts are rotationally connected to the centers of the tops of the sliding blocks. Through mutual cooperation of a sliding groove, a sliding block, a first rotating shaft, a second rotating shaft, a fixing plate, a first buffer spring and a first damper, energy can be absorbed, the amplitude of vibration is reduced so as to achieve the effect of buffering and vibration reduction, and through mutual cooperation of a second damper and a second buffer spring, the auxiliary effect can be achieved; and the vibration reduction effect can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical arms, in particular to a multi-degree-of-freedom mechanical arm for a dynamic seat. Background Art

[0002] The robot arm is a complex system with high precision, multiple inputs and multiple outputs, high nonlinearity and strong coupling. Due to its unique operational flexibility, it has been widely used in industrial assembly, safety and explosion-proof fields. The robot arm is a complex system with uncertainties such as parameter perturbation, external interference and unmodeled dynamics. Therefore, the modeling model of the robot arm is also uncertain. For different tasks, it is necessary to plan the motion trajectory of the robot arm joint space, so as to cascade and form the terminal posture.

[0003] When the existing robotic arm is moving, it may generate certain noise and vibration, which will interfere with the user's comfort and experience. This requires additional measures to reduce the impact of noise and vibration to provide a better user experience. Therefore, we propose a multi-degree-of-freedom robotic arm for dynamic seats to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to solve the problem that in the prior art, when the mechanical arm moves, certain noise and vibration may be generated, which will cause certain interference to the comfort and experience of the user. This requires additional measures to reduce the impact of noise and vibration to provide a better user experience. A multi-degree-of-freedom mechanical arm for a dynamic seat is proposed.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions: a multi-degree-of-freedom mechanical arm for a dynamic seat, comprising an overall structure and a positioning structure, wherein the positioning structure is located on both sides of the outer surface of the overall structure near the front and rear position of the bottom;

[0006] The overall structure includes a base, wherein sliding grooves are provided on both sides of the inner bottom of the base at front and rear positions, a slider is slidably connected to the inner wall of the sliding groove, a first rotating shaft is rotatably connected at the top center of the slider, a first damper is fixedly installed on the outer surface of the first rotating shaft, a first buffer spring is sleeved on the outer surface of the first damper, a fixing plate is slidably connected to the inner surface of the base near the top position, a second rotating shaft is rotatably connected at both sides of the bottom of the fixing plate, and a second damper is fixedly installed at the front and rear positions of the inner bottom of the base.

[0007] Preferably, one end of the first buffer spring is fixedly connected to the outer surface of the first rotating shaft, the other end of the first buffer spring is fixedly connected to the outer surface of the second rotating shaft, and the extended end of the first damper is fixedly connected to the outer surface of the second rotating shaft.

[0008] Preferably, a second buffer spring is sleeved on the outer surface of the second damper, and the protruding end of the second damper is fixedly connected to the bottom surface of the fixing plate.

[0009] Preferably, one end of the second buffer spring is fixedly connected to the inner bottom of the base, and the other end of the second buffer spring is fixedly connected to the bottom surface of the fixing plate.

[0010] Preferably, a sound insulation board is fixedly connected to the top center of the fixed plate, and a servo motor is fixedly installed at the bottom center of the sound insulation board.

[0011] Preferably, the output end of the servo motor is fixedly connected to a third rotating shaft, and the top end surface of the third rotating shaft is fixedly mounted with a robot arm body.

[0012] Preferably, the positioning structure comprises a connecting block, a positioning pin is provided through the top center of the connecting block, and the outer surface of the connecting block is fixedly connected to the outer surfaces of both sides of the base.

[0013] Compared with the prior art, the advantages and positive effects of the utility model are:

[0014] 1. In the utility model, the vibration force generated when the robot arm body moves can absorb energy and reduce the amplitude of vibration through the cooperation of the slide groove, the slider, the first rotating shaft, the second rotating shaft, the fixed plate, the first buffer spring and the first damper, so as to achieve the effect of buffering and vibration reduction. And through the cooperation of the second damper and the second buffer spring, an auxiliary role can be achieved to improve the effect of vibration reduction.

[0015] 2. In the utility model, by setting the sound insulation board, the noise generated by the servo motor can be reduced to a minimum, so that the user can have a better experience. By cooperating with the servo motor and the third rotating shaft, the angle of the robot body can be adjusted, so that the flexibility of the robot body can be improved. By setting the connecting block and the positioning pin, the stability of the whole during use can be improved, and it is also convenient for the user to fix the whole in any place. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The utility model provides a three-dimensional structural schematic diagram of a multi-degree-of-freedom mechanical arm for a dynamic seat;

[0017] Figure 2 The utility model proposes a multi-degree-of-freedom mechanical arm for a dynamic seat Figure 1 A schematic cross-sectional structure diagram of ;

[0018] Figure 3 is a schematic diagram of the three-dimensional structure of the chute;

[0019] Figure 4 It is a schematic diagram of the three-dimensional structure of the slider, the first damper, the first buffer spring and the first rotating shaft.

[0020] Legend: 1. Overall structure; 2. Positioning structure; 101. Base; 102. Robot arm body; 103. Fixed plate; 104. Servo motor; 105. Third rotating axis; 106. Sound insulation board; 107. Slide groove; 108. Second damper; 109. Second buffer spring; 110. Second rotating axis; 111. Slider; 112. First rotating axis; 113. First damper; 114. First buffer spring; 201. Connecting block; 202. Positioning pin. DETAILED DESCRIPTION

[0021] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0022] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0023] Embodiment 1, as Figure 1-Figure 4 As shown, a multi-degree-of-freedom mechanical arm for a dynamic seat includes an overall structure 1 and a positioning structure 2, wherein the positioning structure 2 is located on both sides of the outer surface of the overall structure 1 near the front and rear positions of the bottom; the overall structure 1 includes a base 101, and slide grooves 107 are provided at the front and rear positions of both sides of the inner bottom of the base 101, and a slider 111 is slidably connected to the inner surface wall of the slide groove 107, and a first rotating shaft 112 is rotatably connected to the top center of the slider 111, and a first damper 113 is fixedly installed on the outer surface of the first rotating shaft 112, and a first buffer spring 114 is sleeved on the outer surface of the first damper 113, and a fixed plate 103 is slidably connected to the inner surface of the base 101 near the top position, and a second rotating shaft 110 is rotatably connected to the front and rear positions of both sides of the bottom of the fixed plate 103, and a second damper 108 is fixedly installed at the front and rear positions of the inner bottom of the base 101.

[0024] The effect achieved by the entire embodiment 1 is as follows: Figure 3 and Figure 4As shown, when the robot body 102 is moving, the vibration force generated can be transmitted downward to the fixed plate 103, and the vibration force can be reduced through the cooperation of the slide groove 107, the slider 111, the first damper 113, the first buffer spring 114, the first rotating shaft 112 and the second rotating shaft 110, so that the amplitude of the vibration can be reduced to achieve a buffering effect, and the noise generated when the servo motor 104 is running can be reduced to a minimum through the setting of the sound insulation board 106, and the material of the sound insulation board 106 is composed of polyester fiber.

[0025] Embodiment 2, as Figure 1-Figure 4 As shown, one end of the first buffer spring 114 is fixedly connected to the outer surface of the first rotating shaft 112, the other end of the first buffer spring 114 is fixedly connected to the outer surface of the second rotating shaft 110, the extended end of the first damper 113 is fixedly connected to the outer surface of the second rotating shaft 110, the outer surface of the second damper 108 is sleeved with a second buffer spring 109, the extended end of the second damper 108 is fixedly connected to the bottom surface of the fixing plate 103, one end of the second buffer spring 109 is fixedly connected to the inner bottom of the base 101, and the second buffer spring 109 is fixedly connected to the inner bottom of the base 101. The other end is fixedly connected to the bottom surface of the fixed plate 103, a sound insulation board 106 is fixedly connected to the top center of the fixed plate 103, a servo motor 104 is fixedly installed at the bottom center of the sound insulation board 106, an output end of the servo motor 104 is fixedly connected to the third rotating shaft 105, a robot body 102 is fixedly installed on the top end surface of the third rotating shaft 105, the positioning structure 2 includes a connecting block 201, a positioning pin 202 is penetrated at the top center of the connecting block 201, and the outer surface of the connecting block 201 is fixedly connected to the outer surfaces on both sides of the base 101.

[0026] The effect achieved by the entire embodiment 2 is as follows: Figure 1 and Figure 2 As shown, when the third rotating shaft 105 is rotated by the servo motor 104, the robot body 102 will also be driven to rotate, so that the angle of the robot body 102 can be adjusted for subsequent use. Through the cooperation of the connecting block 201 and the positioning pin 202, it is convenient for the user to fix the whole at any location, and the stability of the whole during use can also be improved.

[0027] Working principle: When the vibration generated by the robot arm body 102 during operation is transmitted downward to the fixed plate 103, the vibration force can be reduced and the amplitude of the vibration can be reduced through the cooperation of the second rotating shaft 110, the first damper 113, the first buffer spring 114, the slider 111, the first rotating shaft 112 and the slide groove 107 to achieve the effect of buffering and vibration reduction. The second damper 108 and the second buffer spring 109 can play an auxiliary role to improve the overall buffering effect. When the angle of the robot arm body 102 needs to be adjusted, the servo motor 104 starts to run first to enable the third rotating shaft 105 to rotate. When the third rotating shaft 105 can rotate, it will drive the robot arm body 102 to rotate. The angle of the Shudie robot arm body 102 can be adjusted for subsequent use, and the noise generated when the servo motor 104 is running can be reduced to a minimum through the cooperation of the sound insulation board 106.

[0028] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A multi-degree-of-freedom mechanical arm for a dynamic seat, characterized in that: include: An overall structure (1) and a positioning structure (2), wherein the positioning structure (2) is located on the outer surfaces of both sides of the overall structure (1) near the front and rear positions of the bottom; The overall structure (1) comprises a base (101), wherein slide grooves (107) are provided at front and rear positions on both sides of the inner bottom of the base (101), a slider (111) is slidably connected to the inner surface wall of the slide groove (107), a first rotating shaft (112) is rotatably connected to the top center of the slider (111), a first damper (113) is fixedly installed on the outer surface of the first rotating shaft (112), a first buffer spring (114) is sleeved on the outer surface of the first damper (113), a fixed plate (103) is slidably connected to the inner surface of the base (101) near the top position, a second rotating shaft (110) is rotatably connected to the front and rear positions on both sides of the bottom of the fixed plate (103), and a second damper (108) is fixedly installed at the front and rear positions of the inner bottom of the base (101).

2. The multi-degree-of-freedom mechanical arm for a dynamic seat according to claim 1, characterized in that: One end of the first buffer spring (114) is fixedly connected to the outer surface of the first rotating shaft (112), the other end of the first buffer spring (114) is fixedly connected to the outer surface of the second rotating shaft (110), and the protruding end of the first damper (113) is fixedly connected to the outer surface of the second rotating shaft (110).

3. The multi-degree-of-freedom mechanical arm for a dynamic seat according to claim 1, characterized in that: A second buffer spring (109) is sleeved on the outer surface of the second damper (108), and the protruding end of the second damper (108) is fixedly connected to the bottom surface of the fixing plate (103).

4. The multi-degree-of-freedom mechanical arm for a dynamic seat according to claim 3, characterized in that: One end of the second buffer spring (109) is fixedly connected to the inner bottom of the base (101), and the other end of the second buffer spring (109) is fixedly connected to the bottom surface of the fixing plate (103).

5. The multi-degree-of-freedom mechanical arm for a dynamic seat according to claim 1, characterized in that: A sound insulation board (106) is fixedly connected to the top center of the fixed plate (103), and a servo motor (104) is fixedly installed to the bottom center of the sound insulation board (106).

6. The multi-degree-of-freedom mechanical arm for a dynamic seat according to claim 5, characterized in that: The output end of the servo motor (104) is fixedly connected to a third rotating shaft (105), and the top end surface of the third rotating shaft (105) is fixedly mounted with a mechanical arm body (102).

7. The multi-degree-of-freedom mechanical arm for a dynamic seat according to claim 1, characterized in that: The positioning structure (2) comprises a connecting block (201), a positioning pin (202) is provided through the top center of the connecting block (201), and the outer surface of the connecting block (201) is fixedly connected to the outer surfaces of both sides of the base (101).

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