Damping arm
By designing a shock absorber that rotates synchronously with the shock absorber, the vibration problem during motion shooting is solved by using the telescopic rod and spring. The shooting quality and experience are improved.
Patent Information
- Application Number
- CN202422307008.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-20
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-09-20
AI Technical Summary
The existing shock absorber shaking and jittering during motion shooting, affecting the imaging quality of the shooting screen.
A shock absorbing arm is designed, including a connecting arm, a mounting part, a fixing part and a shock absorbing part. The connecting arm rotates simultaneously with the shock absorbing part. The shock absorbing part shakes and shakes through the telescopic rod and the telescopic spring to achieve shock absorbing function.
Effectively reduce the shaking and shaking of the shooting equipment, improve the shooting quality, and enhance the shooting experience.
Smart Images
Figure CN223120499U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of photographic accessories, in particular to a shock-absorbing arm. Background Art
[0002] With the progress of the times, shooting and photography, as one of the popular hobbies of the public, directly holding the camera for shooting will greatly limit the shooting scenarios and requirements. In order to meet the shooting needs of users, various shooting auxiliary brackets have been designed and manufactured to install and support the shooting equipment on other equipment such as cars and bicycles for shooting activities. However, during the process of photography and videography, when the user holds the camera or video camera for moving shooting, the connecting arm of the shock-absorbing arm will shake and vibrate, seriously affecting the imaging quality of the shooting picture. Summary of the Invention
[0003] The utility model aims to provide a shock-absorbing arm to solve the technical problem that the existing shock-absorbing arm shakes and vibrates during moving shooting, seriously affecting the imaging quality of the shooting picture.
[0004] To solve the above technical problem, the utility model adopts the following technical scheme:
[0005] A shock-absorbing arm, comprising:
[0006] A connecting arm having a first end and a second end opposite to each other along its axis, the connecting arm including a pair of opposite and spaced first arm and second arm;
[0007] An installation part rotatably connected to the first end and used for installing a shooting device, the first arm and the second arm being rotatably connected to opposite sides of the installation part;
[0008] A fixing part rotatably connected to the second end and used for connecting an external device, the first arm and the second arm being rotatably connected to opposite sides of the fixing part;
[0009] A shock-absorbing part provided between the first arm and the second arm, the shock-absorbing part including a telescopic rod and a telescopic spring sleeved outside the telescopic rod, the telescopic rod having a third end and a fourth end opposite to each other along its axis, the third end being rotatably connected to the installation part, and the fourth end being rotatably connected to the fixing part; opposite ends of the telescopic spring are respectively fixed to the third end and the fourth end, and the elastic member accumulates or releases elastic force as the telescopic rod expands and contracts;
[0010] The connecting arm and the shock-absorbing part can rotate synchronously to change the length dimension of the telescopic rod.
[0011] In one embodiment, the third end extends radially outward along the telescopic rod to form a first flange, and the fourth end extends radially outward along the telescopic rod to form a second flange; the opposite ends of the telescopic spring are respectively fixed to the first flange and the second flange.
[0012] In one embodiment, the telescopic rod includes a first fixed section, a movable section, and a second fixed section that are sequentially sleeved and connected along its axial direction. The first flange is formed on the outer sidewall of the first fixed section, and the second flange is formed on the outer sidewall of the second fixed section; the movable section can telescopically move relative to one of the first fixed section and the second fixed section, and there is a gap between the inner sidewall of the telescopic spring and the outer sidewall of the movable section.
[0013] In one embodiment, the movable section is internally sleeved in both the first fixed section and the second fixed section. One end of the telescopic spring is in interference fit with the first fixed section, and the other opposite end of the telescopic spring is in interference fit with the second fixed section.
[0014] In one embodiment, the first end is rotatably connected to the mounting portion through a first rotating shaft, the second end is rotatably connected to the fixing portion through a second rotating shaft, the third end is rotatably connected to the mounting portion through a third rotating shaft, and the fourth end is rotatably connected to the mounting portion through a fourth rotating shaft. The first rotating shaft, the second rotating shaft, the third rotating shaft, and the fourth rotating shaft are parallel to each other and are all perpendicular to the axial direction of the connecting arm;
[0015] On one side of the mounting portion facing the telescopic rod, there are two relatively spaced first lugs. The gap between the two first lugs forms a first avoidance notch. The third rotating shaft sequentially passes through the first lug and the third end, and the third end rotates within the first avoidance notch; on one side of the fixing portion facing the telescopic rod, there are two relatively spaced second lugs. The gap between the two second lugs forms a second avoidance notch. The fourth rotating shaft sequentially passes through the second lug and the fourth end, and the fourth end rotates within the second avoidance notch.
[0016] In one embodiment, the second rotating shaft and the fourth rotating shaft are the same rotating shaft. The second rotating shaft sequentially passes through the first arm, the second lug, the third end, and the second arm; the first rotating shaft and the third rotating shaft are spaced apart at the first end;
[0017] Or, the first rotating shaft and the third rotating shaft are the same rotating shaft. The first rotating shaft sequentially passes through the first arm, the first lug, the fourth end, and the second arm; the second rotating shaft and the fourth rotating shaft are spaced apart at the second end.
[0018] In one embodiment, the number of the first arms and the second arms is two and they are spaced apart, and the two first arms and the two second arms are respectively opposite to each other one by one.
[0019] In one embodiment, both the first arm and the second arm are spaced apart from the telescopic spring.
[0020] In one embodiment, both the first arm and the second arm are provided with threaded holes for threadedly connecting external devices.
[0021] In one embodiment, the mounting portion has a first adapter plate with a first adapter hole through which a transfer shaft passes; and / or, the fixing portion has a second adapter plate with a second adapter hole through which the transfer shaft passes.
[0022] As can be seen from the above technical solutions, the embodiments of the present utility model have at least the following advantages and positive effects:
[0023] The shock-absorbing arm of the embodiment of the present utility model includes a connecting arm, a mounting portion, a fixing portion and a shock-absorbing portion. The connecting arm includes a first arm and a second arm that are opposite and spaced apart. The opposite ends of the connecting arm along its axial direction are respectively rotatably connected to the mounting portion and the fixing portion. The mounting portion is used for mounting a photographing device, the fixing portion is used for connecting an external device, the shock-absorbing portion is disposed between the first arm and the second arm, and the shock-absorbing portion includes a telescopic rod and a telescopic spring sleeved outside the telescopic rod. The opposite ends of the telescopic rod along its axial direction are respectively rotatably connected to the mounting portion and the fixing portion. When the user is using the shock-absorbing arm, the connecting arm and the shock-absorbing portion can rotate synchronously, and the shock-absorbing portion can also rotate and move telescopically synchronously to buffer the shaking and jitter generated by the connecting arm during the photographing process, realizing the shock-absorbing function. Furthermore, especially the telescopic spring in the shock-absorbing portion is sleeved outside the telescopic rod, and the telescopic spring has a reset function, further buffering the vibration deviation of the photographing device during the photographing process to improve the shock-absorbing effect. Thereby stabilizing the photographing orientation, improving the photographing image quality, and obtaining a better photographing experience. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the structures shown in these drawings.
[0025] Figure 1 It is a schematic diagram of the overall structure of the shock-absorbing arm for mounting a photographing device in an embodiment of the present application;
[0026] Figure 2 Another perspective structural schematic diagram of the shock-absorbing arm shown Figure 1 ;
[0027] Figure 3 Another perspective structural schematic diagram of the shock-absorbing arm shown Figure 1 ;
[0028] Figure 4 Another perspective structural schematic diagram of the shock-absorbing arm shown Figure 1 ;
[0029] Figure 5 Another perspective structural schematic diagram of the shock-absorbing arm shown Figure 1 ;
[0030] The reference numerals are explained as follows
[0031] 10. Shock-absorbing arm; 100. Connecting arm; 101. First end; 102. Second end; 103. Threaded hole; 110. First arm; 120. Second arm; 200. Mounting part; 201. First surface; 202. Second surface; 210. First adapter plate; 211. First adapter hole; 220. First lug; 221. First relief notch; 300. Fixed part; 301. Third surface; 302. Fourth surface; 310. Second adapter plate; 311. Second adapter hole; 320. Second lug; 321. Second relief notch; 400. Shock-absorbing part; 401. Third end; 402. Fourth end; 403. First flange; 404. Second flange; 410. Telescopic rod; 411. First fixed section; 412. Movable section; 413. Second fixed section; 420. Telescopic spring; 501. First rotating shaft; 502. Second rotating shaft; 503. Third rotating shaft; 504. Fourth rotating shaft; 20. Shooting device; 30. Locking shaft Detailed implementation manners
[0032] Typical implementation manners reflecting the features and advantages of the present utility model will be described in detail in the following description. It should be understood that the present utility model can have various changes in different implementation manners, all of which do not depart from the scope of the present utility model, and the descriptions and illustrations therein are essentially for illustrative purposes and not for limiting the present utility model
[0033] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality of" means two or more unless otherwise specifically defined
[0034] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "arranged", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.
[0035] Reference Figure 1 , the present application provides a shock-absorbing arm 10. When the shooting device performs motion shooting, the shock-absorbing arm 10 can be used as a bracket for mounting the shooting device, effectively reducing the shaking and jitter of the bracket, thereby stabilizing the shooting device 20 and obtaining better shooting image quality and quality. Specifically, the shock-absorbing arm 10 includes a connecting arm 100, a mounting portion 200, a fixing portion 300, and a shock-absorbing portion 400. The connecting arm 100 serves as a supporting body and has a first end 101 and a second end 102 that are opposite to each other along its axial direction. The mounting portion 200 is rotatably connected to the first end 101 and is used for mounting the shooting device. The fixing portion 300 is rotatably connected to the second end 102 and is used for connecting an external device. That is, the mounting portion 200 and the fixing portion 300 are respectively rotatably connected to opposite ends of the connecting arm 100. The first end 101 of the connecting arm 100 mounts the shooting device 20 through the mounting portion 200, and the second end 102 of the connecting arm 100 is connected to other supporting devices through the fixing portion 300, so that the shooting device is indirectly mounted and connected to other supporting devices through the shock-absorbing arm 10. The shock-absorbing portion 400 is used for shock-absorbing functions and is simultaneously connected to the mounting portion 200 and the fixing portion 300. Here, the shooting device includes but is not limited to cameras and video cameras; the supporting device includes but is not limited to bicycles, cars, electric vehicles, and other devices with a supporting surface and a supporting portion. In addition, the user can also hold the connecting arm for motion shooting.
[0036] Combined with reference Figure 1 and Figure 2 , for the convenience of description, along the axial direction of the connecting arm 100, it is defined that the mounting portion 200 has opposite first and second surfaces 201 and 202, and the fixing portion 300 has opposite third and fourth surfaces 301 and 302. The first surface 201 is used for mounting the shooting device, the second surface 202 is used for rotatably connecting to the first end 101, the third surface 301 is spaced opposite to the second surface 202 and is used for rotatably connecting to the second end 102, and the fourth surface 302 is used for connecting to an external supporting device.
[0037] The connecting arm 100 includes a first arm 110 and a second arm 120 which are spaced apart and opposite to each other. At the first end 101, the first arm 110 and the second arm 120 are rotatably connected to opposite sides of the second surface 202; at the second end 102, the first arm 110 and the second arm 120 are rotatably connected to opposite sides of the third surface 301. The first arm 110 and the second arm 120 rotate synchronously. No matter what angular position the connecting arm 100 rotates to, in the axial direction perpendicular to the connecting arm 100, the projections of the first arm 110, the second surface 202, the second arm 120, and the third surface 301 can be sequentially connected to form a structure similar to a parallelogram. That is, the projection lines of the first arm 110 and the second arm 120 are parallel and equal to each other, the projection lines of the second surface 202 and the third surface 301 are parallel and equal to each other, and when all four projection lines are straight lines, the projection forms a parallelogram structure.
[0038] Reference Figure 1 , the shock absorption part 400 is arranged between the first arm 110 and the second arm 120. The shock absorption part 400 includes a telescopic rod 410 and a telescopic spring 420 sleeved outside the telescopic rod 410. The telescopic rod 410 has a third end 401 and a fourth end 402 which are opposite to each other along its axis. The third end 401 is rotatably connected to the second surface 202 of the mounting part 200, and the fourth end 402 is rotatably connected to the third surface 301 of the fixing part 300. The opposite ends of the telescopic spring 420 are respectively fixed to the third end 401 and the fourth end 402. The telescopic spring 420 and the telescopic rod 410 expand and contract synchronously, that is, the telescopic spring 420 accumulates or releases elastic force as the telescopic rod 410 expands and contracts.
[0039] Continue to refer to Figure 1 , both the first end 101 and the third end 401 are rotatably connected to the second surface 202, and both the second end 102 and the fourth end 402 are rotatably connected to the third surface 301. The connecting arm 100 and the shock absorption part 400 can rotate synchronously to synchronously change the length dimension of the telescopic rod 410, that is, the shock absorption part 400 can rotate and move telescopically synchronously to buffer the shaking and jitter generated by the connecting arm during the shooting process and achieve the shock absorption function. Furthermore, especially, the telescopic spring 420 in the shock absorption part 400 is sleeved outside the telescopic rod 410, and the telescopic spring 420 has a reset function, which further buffers the vibration offset of the shooting device during the shooting process to improve the shock absorption effect, thereby stabilizing the shooting orientation, improving the shooting image quality, and enabling the user to obtain a better shooting experience.
[0040] It should be noted that in this application, the shock-absorbing part 400 is arranged between the first arm 110 and the second arm 120 to protect the shock-absorbing part 400 from being exposed to the air, which may cause wear, erosion, and damage. The number of the first arm 110 and the second arm 120 is the same and they are spaced relatively. The shapes of any pair of opposite first arm 110 and second arm 120 can be the same or different, and the two can rotate synchronously to change the linear distance between the mounting part 200 and the fixing part 300, and change the length dimension of the telescopic rod 410 (the length dimension of the shock-absorbing part 400).
[0041] Preferably, referring to Figure 2 , in this embodiment, the number of the first arm 110 and the second arm 120 is two each and they are spaced relatively, and the two first arms 110 and the second arms 120 are respectively opposite to each other one by one. In theory, the more the number of the connecting arms 100, the better the shock-absorbing effect. However, according to the actual processing situation, factors such as appearance coordination, structural compactness, and processing difficulty also need to be considered. Therefore, the structure of two pairs of the first arm 110 and the second arm 120 can already meet the purposes of protecting the shock-absorbing part 400 and improving the shock-absorbing effect. Therefore, in this application, the number of the connecting arms 100 is not limited, as long as the number of the first arm 110 and the second arm 120 is the same and they are aligned one by one.
[0042] Preferably, referring to Figure 1 , in this embodiment, the first arm 110 and the second arm 120 are both spaced apart from the telescopic spring 420 and do not contact it, which enables the shock-absorbing part 400 to rotate freely between the first arm 110 and the second arm 120, and the telescopic spring 420 is protected from frictional damage. It should be understood that in this application, whether the first arm 110 and the second arm 120 are spaced apart from the telescopic spring 420 is not limited.
[0043] Preferably, referring to Figure 1 , in this embodiment, threaded holes 103 are provided on the first arm 110 and the second arm 120. The threaded holes 103 are used for threaded connection with external devices, such as photographic auxiliary accessories like fill lights and flashlights. It should be understood that the threaded holes 103 are only extended external interfaces of the shock-absorbing arm 10 to increase its practicality. In this application, whether the threaded holes 103 are provided, the number, and the setting positions are not limited.
[0044] Preferably, referring to Figure 1, in this embodiment, the first surface 201 of the mounting portion 200 has a first adapter plate 210 protruding and extending outward. The first adapter plate 210 is provided with a first adapter hole 211 through which the locking shaft 30 is inserted to mount the photographing device on the first surface 201; the fourth surface 302 of the fixing portion 300 has a second adapter plate 310 protruding and extending outward. The second adapter plate 310 is provided with a second adapter hole 311 through which the locking shaft 30 is inserted to externally connect the shock-absorbing arm 10 equipped with the photographing device to other devices. It should be understood that in this application, the connection method for mounting the photographing device on the first surface 201 is not limited, and the connection method for externally connecting the fixing portion 300 to other supporting devices is not limited. That is, as long as the shock-absorbing arm 10 can mount the photographing device and externally connect to other devices, it should be protected by this application.
[0045] Reference Figure 2 , the first end 101 is rotatably connected to the mounting portion 200 through two first rotating shafts 501, the second end 102 is rotatably connected to the fixing portion 300 through two second rotating shafts 502, the third end 401 is rotatably connected to the mounting portion 200 through a third rotating shaft 503, and the fourth end 402 is rotatably connected to the fixing portion 300 through a fourth rotating shaft 504. The first rotating shaft 501, the second rotating shaft 502, the third rotating shaft 503, and the fourth rotating shaft 504 are parallel to each other and perpendicular to the axial direction of the connecting arm 100.
[0046] Specifically, with reference to Figure 3 and Figure 4 , the second surface 202 (the side of the mounting portion 200 facing the telescopic rod 410) protrudes with two relatively spaced first lugs 220. The gap between the two first lugs 220 forms a first avoidance notch 221. The third rotating shaft 503 sequentially passes through the first lug 220 and the third end 401 to realize the rotational connection of the third end 401 to the mounting portion 200, and the third end 401 rotates within the first avoidance notch 221. The third surface 301 (the side of the fixing portion 300 facing the telescopic rod 410) protrudes with two relatively spaced second lugs 320. The gap between the two second lugs 320 forms a second avoidance notch 321. The fourth rotating shaft 504 sequentially passes through the second lug 320 and the fourth end 402 to realize the rotational connection of the fourth end 402 to the fixing portion 300, and the fourth end 402 rotates within the second avoidance notch 321. It should be understood that in this application, the connection method for the telescopic rod 410 to be rotatably connected to the mounting portion 200 is not limited; the connection method for the telescopic rod 410 to be rotatably connected to the fixing portion 300 is not limited.
[0047] Preferably, with reference to Figure 2 and Figure 4, in this embodiment, one of the second rotating shafts 502 and the fourth rotating shaft 504 is the same rotating shaft. At this time, at the second end 102, the aforementioned second rotating shaft 502 sequentially passes through the first arm 110, the second lug 320, the fourth end 402, and the second arm 120, so as to simultaneously realize the rotational connection of the connecting arm 100 and the telescopic rod 410 to the mounting portion 200. Moreover, in this case, the first rotating shaft 501 and the third rotating shaft 503 cannot be coaxial, and the two are spaced apart at the first end 101. Thus, the connecting arm 100 and the telescopic rod 410 are connected to the mounting portion 200 at the same position, while being connected to the fixing portion 300 at different positions, that is, the axial extension direction of the telescopic rod 410 is always inclined to the axis of the connecting arm 100. In this way, during the synchronous rotation of the connecting arm 100 and the telescopic rod 410, the telescopic rod 410 can synchronously expand and contract to change the length dimension.
[0048] It should be understood that in another embodiment of the present application, one of the first rotating shafts 501 and the third rotating shaft 503 can be the same rotating shaft. At this time, at the first end 101, the aforementioned first rotating shaft 501 sequentially passes through the first arm 110, the first lug 220, the third end 401, and the second arm 120, so as to simultaneously realize the rotational connection of the connecting arm 100 and the telescopic rod 410 to the mounting portion 200. Moreover, in this case, the second rotating shaft 502 and the fourth rotating shaft 504 cannot be coaxial, and the two are spaced apart at the second end 102. Thus, the connecting arm 100 and the telescopic rod 410 are connected to the mounting portion 200 at the same position, while being connected to the fixing portion 300 at different positions. In this way, during the synchronous rotation of the connecting arm 100 and the telescopic rod 410, the telescopic rod 410 can synchronously expand and contract to change the length dimension. The coaxial design in the above two embodiments makes the structure of the shock-absorbing arm 10 more compact, the volume tend to be miniaturized, and the processing cost lower, only need to satisfy the coaxiality of one of the relative ends of the connecting arm 100 and the telescopic rod 410. It should be understood that on the premise of not considering the more compact structure of the shock-absorbing arm 10, in the present application, whether the second rotating shaft 502 and the fourth rotating shaft 504 are coaxial is not limited; whether the first rotating shaft 501 and the third rotating shaft 503 are coaxial is not limited.
[0049] Preferably, referring to Figure 5 , in this embodiment, the third end 401 extends radially outwards along the telescopic rod 410 to form a first flange 403, and the fourth end 402 extends radially outwards along the telescopic rod 410 to form a second flange 404. The two ends of the telescopic spring 420 are respectively fixed to the first flange 403 and the second flange 404. It should be understood that the first flange 403 and the second flange 404 are only a specific way to fix the two ends of the telescopic spring 420. Therefore, any method that can fix the two ends of the telescopic spring 420 should fall within the protection scope of the present application, that is, in the present application, the fixing method of the telescopic spring 420 is not limited.
[0050] Continue to refer to Figure 5 , the telescopic rod 410 includes a first fixed section 411, a movable section 412 and a second fixed section 413 which are sleeved along its axial direction in sequence. The front first flange 403 is formed on the outer side wall of the first fixed section 411, and the second flange 404 is formed on the outer side wall of the second fixed section 413. One end of the movable section 412 is fixed to the first fixed section 411, and the other end of the movable section 412 can telescopically move relative to the second fixed section 413. Preferably, the movable section 412 is simultaneously sleeved inside the first fixed section 411 and the second fixed section 413, and the radial dimensions of the first fixed section 411 and the second fixed section 413 are both larger than the radial dimension of the movable section 412, so that there is a gap between the inner side wall of the telescopic spring 420 and the outer side wall of the movable section 412 to reduce the frictional damping between the movable section 412 and the telescopic spring 420 during the telescopic movement. It should be understood that, first, the manner in which the telescopic rod 410 realizes the telescopic change of length is not limited. Second, in this application, it is necessary to satisfy both the smooth and free telescopic movement of the telescopic rod 410 and the stable fixation of the telescopic spring 420. Therefore, the telescopic rod 410 is divided into three sections, with a thick design at both ends and a thin design in the middle.
[0051] Preferably, in the embodiment of this application, one end of the telescopic spring 420 is in interference fit with the first fixed section 411, that is, the inner side wall of the telescopic spring 420 tightly fits against the outer side wall of the first fixed section 411; the other opposite end of the telescopic spring 420 is in interference fit with the second fixed section 413, that is, the inner side wall of the telescopic spring 420 tightly fits against the outer side wall of the second fixed section 413. The above design makes the telescopic spring 420 further stably sleeved on the outer side of the telescopic rod 410 to buffer the deflection vibration during the rotational telescopic process of the telescopic rod 410, thereby further improving the damping effect of the damping arm 10. It should be understood that, on the premise of not considering the stable sleeving degree of the telescopic spring 420, whether the telescopic spring 420 and the two ends of the telescopic rod 410 are in interference fit and the positions of the interference fit are not limited.
[0052] Although the present utility model has been described with reference to several exemplary embodiments, it should be understood that the terms used are descriptive and exemplary, rather than restrictive. Since the present utility model can be embodied in many forms without departing from the spirit or essence of the invention, it should be understood that the above-described embodiments are not limited to any of the foregoing details, but should be broadly construed within the spirit and scope defined by the appended claims. Therefore, all changes and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.
Claims
1. A shock-absorbing arm, characterized in that, Comprising: A connecting arm having a first end and a second end opposite to each other along its axis, the connecting arm including a pair of opposite and spaced first arm and second arm; A mounting portion rotatably connected to the first end and for mounting a photographing device, the first arm and the second arm being rotatably connected to opposite sides of the mounting portion; A fixing portion rotatably connected to the second end and for connecting an external device, the first arm and the second arm being rotatably connected to opposite sides of the fixing portion; A shock-absorbing portion provided between the first arm and the second arm, the shock-absorbing portion including a telescopic rod and a telescopic spring sleeved outside the telescopic rod, the telescopic rod having a third end and a fourth end opposite to each other along its axis, the third end being rotatably connected to the mounting portion, and the fourth end being rotatably connected to the fixing portion; opposite ends of the telescopic spring are respectively fixed to the third end and the fourth end, and the elastic member accumulates or releases elastic force as the telescopic rod expands and contracts; The connecting arm and the shock-absorbing portion can rotate synchronously to change the length dimension of the telescopic rod.
2. The shock-absorbing arm according to claim 1, wherein The third end extends radially outwards from the telescopic rod to form a first flange, and the fourth end extends radially outwards from the telescopic rod to form a second flange; opposite ends of the telescopic spring are respectively fixed to the first flange and the second flange.
3. The shock-absorbing arm according to claim 2, characterized in that, The telescopic rod includes a first fixed section, a movable section and a second fixed section which are sequentially sleeved and connected along its axis, the first flange is formed on the outer side wall of the first fixed section, and the second flange is formed on the outer side wall of the second fixed section; the movable section can telescopically move relative to one of the first fixed section and the second fixed section, and there is a gap between the inner side wall of the telescopic spring and the outer side wall of the movable section.
4. The shock-absorbing arm according to claim 3, characterized in that, The movable section is simultaneously sleeved inside the first fixed section and the second fixed section, one end of the telescopic spring is in interference fit with the first fixed section, and the other opposite end of the telescopic spring is in interference fit with the second fixed section.
5. The shock-absorbing arm according to claim 1, characterized in that, The first end is rotatably connected to the mounting portion through a first rotating shaft, the second end is rotatably connected to the fixing portion through a second rotating shaft, the third end is rotatably connected to the mounting portion through a third rotating shaft, the fourth end is rotatably connected to the mounting portion through a fourth rotating shaft, the first rotating shaft, the second rotating shaft, the third rotating shaft and the fourth rotating shaft are parallel to each other and are all perpendicular to the axis of the connecting arm; On one side of the mounting portion facing the telescopic rod, there are two opposite and spaced first lugs, the gap between the two first lugs forms a first avoidance notch, the third rotating shaft sequentially passes through the first lug and the third end, and the third end rotates and moves within the first avoidance notch; on one side of the fixing portion facing the telescopic rod, there are two opposite and spaced second lugs, the gap between the two second lugs forms a second avoidance notch, the fourth rotating shaft sequentially passes through the second lug and the fourth end, and the fourth end rotates and moves within the second avoidance notch.
6. The shock-absorbing arm according to claim 5, characterized in that, The second rotating shaft and the fourth rotating shaft are the same rotating shaft, and the second rotating shaft sequentially penetrates through the first arm, the second lug, the third end and the second arm; the first rotating shaft and the third rotating shaft are spaced apart at the first end; Alternatively, the first rotating shaft and the third rotating shaft are the same rotating shaft, and the first rotating shaft sequentially penetrates through the first arm, the first lug, the fourth end and the second arm; the second rotating shaft and the fourth rotating shaft are spaced apart at the second end.
7. The shock-absorbing arm according to claim 1, characterized in that, The number of the first arms and the second arms is two and they are spaced apart, and the two first arms and the two second arms are respectively opposite to each other one by one.
8. The shock-absorbing arm according to claim 1, wherein, Both the first arm and the second arm are spaced apart from the telescopic spring.
9. The shock-absorbing arm according to claim 1, characterized in that, Both the first arm and the second arm are provided with threaded holes for threadedly connecting external devices.
10. The shock-absorbing arm according to claim 1, characterized in that, The mounting portion has a first adapter plate with a first adapter hole for a transfer shaft to pass through; and / or, the fixing portion has a second adapter plate with a second adapter hole for a transfer shaft to pass through.