Clamping mechanism and supporting device

Abstract

The utility model discloses a clamping mechanism and a supporting device, and relates to the technical field of photographic equipment. The clamping mechanism comprises a shell assembly, a clamping arm assembly, a transmission limiting assembly and a control component. The clamping arm assembly is arranged on the shell assembly in the mode that the clamping arm assembly can be switched between a storage state and an extending state. The transmission limiting assembly is arranged in the shell assembly, and the output end of the transmission limiting assembly is used for limiting the clamping arm assembly to stretch out. The control component is arranged on the shell assembly and connected with the input end of the transmission limiting assembly, and the control component is used for driving the transmission limiting assembly to move under the action of external force so as to release limiting of the clamping arm assembly, so that the clamping arm assembly is switched from the storage state to the stretching state. According to the clamping mechanism, the structure of the clamping mechanism is improved, the clamping arms can be automatically ejected out through one key, operation is more convenient, and compared with a traditional manual clamping structure, the clamping mechanism is more labor-saving and does not clamp hands.

Description

Technical Field

[0001] The utility model relates to the technical field of photographic equipment, in particular to a clamping mechanism and a supporting device. Background Art

[0002] The existing support device includes a handle and a clamping mechanism arranged on the top of the handle. The clamping mechanism is used to clamp and fix electronic devices such as mobile phones, cameras, and tablets. When in use, it is necessary to manually stretch out the clamping arms on both sides of the clamping mechanism, then place the electronic device between the two clamping arms and fit it with the base of the clamping mechanism, and then release the hands so that the electronic device is clamped between the two clamping arms, thereby completing the clamping and fixation.

[0003] Since the support device mainly relies on the clamping force generated by the clamping mechanism to fix the electronic device, the force acting on the elastic member is relatively large. For users with less strength, it is more laborious and inconvenient to use. At the same time, during use, the user may accidentally get his hands pinched. Utility Model Content

[0004] The main purpose of the utility model is to provide a clamping mechanism and a supporting device, aiming to realize the automatic pop-up of the clamping arm with one button, improve the convenience of use, and avoid the situation of pinching the hands.

[0005] To achieve the above objectives, the present invention provides a clamping mechanism comprising:

[0006] housing assembly;

[0007] a clamping arm assembly, switchably disposed on the housing assembly between a retracted state and an extended state;

[0008] a transmission limiting assembly, disposed in the housing assembly, wherein an output end of the transmission limiting assembly is used to limit the extension of the clamping arm assembly; and

[0009] A manipulation component is provided on the shell assembly and connected to the input end of the transmission limit assembly. The manipulation component is used to drive the transmission limit assembly to move under the action of an external force to release the limit on the clamping arm assembly, so that the clamping arm assembly switches from the storage state to the extended state.

[0010] Optionally, the control component is a button, the transmission limit assembly includes a limit member and an elastic member, a partition is provided in the housing assembly, the limit member is rotatably disposed on the partition and connected to the button via the elastic member, and the button is connected to the partition via a return spring;

[0011] In which, a protrusion is provided on the inner side of the button, a pressing arm is provided at a position of the limiting member corresponding to the protrusion, the clamping arm assembly is provided with an abutting protrusion, and the limiting member is provided with a limiting protrusion corresponding to the position of the abutting protrusion; in the stored state, the limiting protrusion abuts against the abutting protrusion, and the protrusion does not contact the pressing arm; when the button is pressed, the protrusion presses down the pressing arm to rotate the limiting member, the limiting protrusion and the abutting protrusion disengage from each other, and the clamping arm assembly switches to the extended state.

[0012] Optionally, the clamp arm assembly includes a first clamp arm, a second clamp arm and a pop-up member, the first clamp arm and the second clamp arm are respectively arranged in the two side walls of the shell assembly and are connected by the pop-up member, and the pop-up member is used to drive the first clamp arm and the second clamp arm to automatically pop out after the limiting protrusion and the abutting protrusion are disengaged from each other.

[0013] Optionally, the clamping mechanism further includes a release mechanism, which is provided on the partition and connected to the first clamping arm and the second clamping arm respectively, and is used to make the first clamping arm and the second clamping arm pop out slowly and smoothly to the outside of the shell assembly.

[0014] Optionally, the release mechanism includes a first rack, a second rack, a first guide rod, a second guide rod, a first gear, a second gear and a third gear respectively arranged on the partition, the first rack is sleeved on the first guide rod and connected to the inner end of the first clamping arm, the toothed portion on one side of the first rack is meshed with the first gear, the second rack is sleeved on the second guide rod and connected to the inner end of the second clamping arm, the toothed portion on one side of the second rack is meshed with the second gear, the first gear and the second gear are both meshed with the third gear, the first guide rod and the second guide rod are respectively sleeved with a first compression spring and a second compression spring, one end of the first compression spring abuts against the first rack, the other end of the first compression spring abuts against the mounting seat of the first guide rod, one end of the second compression spring abuts against the second rack, and the other end of the second compression spring abuts against the mounting seat of the second guide rod.

[0015] Optionally, the first clamping arm and the second clamping arm each include a clamping block and a connecting sleeve, the clamping block of the first clamping arm is connected to the first rack via its connecting sleeve, and the clamping block of the second clamping arm is connected to the second rack via its connecting sleeve;

[0016] In which, the clamping block of the first clamping arm can rotate relative to its connecting sleeve, and the clamping block of the second clamping arm can rotate relative to its connecting sleeve; a rotation limiting structure is provided between the clamping block of the first clamping arm and its connecting sleeve, and between the clamping block of the second clamping arm and its connecting sleeve, and the two rotation limiting structures are respectively used to keep the clamping block of the first clamping arm and its connecting sleeve in a target relative position, and the clamping block of the second clamping arm and its connecting sleeve in a target relative position.

[0017] Optionally, at least one of the first clamping arm and the second clamping arm is adjustable in length on the housing to adjust the size of the clamping space.

[0018] Optionally, the clamping mechanism further includes a rotating member, which is rotatably disposed on the shell assembly and is used to drive the shell assembly and the clamping arm assembly to rotate relative to the partition under the drive of an external force to adjust the direction in which the clamping arm assembly clamps the object.

[0019] Optionally, the clamping mechanism further includes a magnetic component, which is provided on the surface or inside of the shell assembly and is used to absorb and fix the object to be clamped.

[0020] To achieve the above object, the present invention provides a supporting device, comprising a pull rod assembly and the above-mentioned clamping mechanism provided on the top of the pull rod assembly, wherein the clamping mechanism comprises:

[0021] housing assembly;

[0022] a clamping arm assembly, switchably disposed on the housing assembly between a retracted state and an extended state;

[0023] a transmission limiting assembly, disposed in the housing assembly, wherein an output end of the transmission limiting assembly is used to limit the extension of the clamping arm assembly; and

[0024] A manipulation component is provided on the shell assembly and connected to the input end of the transmission limit assembly. The manipulation component is used to drive the transmission limit assembly to move under the action of an external force to release the limit on the clamping arm assembly, so that the clamping arm assembly switches from the storage state to the extended state.

[0025] In the technical solution of the present invention, the clamping mechanism includes a shell assembly, a clamping arm assembly, a transmission limit assembly and a control component; the clamping arm assembly is switchably arranged on the shell assembly between a storage state and an extended state; the transmission limit assembly is arranged in the shell assembly, and the output end of the transmission limit assembly is used to limit the extension of the clamping arm assembly; the control component is arranged on the shell assembly and connected to the input end of the transmission limit assembly, and the control component is used to drive the transmission limit assembly to move under the action of an external force to release the limit on the clamping arm assembly, so that the clamping arm assembly switches from the storage state to the extended state. It can be understood that the present invention adopts an automatic pop-up structure to connect the control component and the clamping arm assembly through the transmission limit assembly, thereby realizing one-button automatic pop-up of the clamping arm, greatly improving the convenience of use, and can avoid the situation of pinching hands, which is safer. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0027] Figure 1 This is a structural diagram of an embodiment of the clamping mechanism of the present utility model;

[0028] Figure 2 This is a schematic diagram of the internal structure of an embodiment of the clamping mechanism of the present utility model;

[0029] Figure 3 This is another schematic diagram of the internal structure of an embodiment of the clamping mechanism of the present invention;

[0030] Figure 4 This is another schematic diagram of the internal structure of an embodiment of the clamping mechanism of the present invention.

[0031] Description of Figure Numbers:

[0032] 10. Shell assembly; 20. Clamping arm assembly; 30. Transmission limit assembly; 40. Control component; 50. Slow-release mechanism; 60. Rotating member; 31. Limiting member; 32. Elastic member; 101. Partition; 41. Return spring; 311. Limiting protrusion; 201. Abutting protrusion; 21. First clamping arm; 22. Second clamping arm; 23. Pop-up member; 51. First rack; 52. Second rack; 53. First guide rod; 54. First gear; 55. Second gear; 56. Third gear; 210. Connecting rod; 211. Clamping block; 212. Connecting sleeve; 213. Rotation limit structure.

[0033] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0036] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediary, and internal connections between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0037] In addition, the descriptions of "first", "second", etc. in the present utility model are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text is to include three parallel solutions. Taking "A and / or B" as an example, it includes solution A, or solution B, or a solution in which both A and B are satisfied. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0038] The present invention provides a clamping mechanism that can be applied to support devices such as handheld stabilizers and tripods, and can clamp items such as mobile phones, cameras, tablet computers, books, etc., but the scope of application is not limited thereto.

[0039] Reference Figures 1 to 3In one embodiment of the present invention, the clamping mechanism includes a shell assembly 10, a clamping arm assembly 20, a transmission limit assembly 30 and a control component 40; the clamping arm assembly 20 is switchably arranged on the shell assembly 10 between a storage state and an extended state; the transmission limit assembly 30 is arranged in the shell assembly 10, and the output end of the transmission limit assembly 30 is used to limit the extension of the clamping arm assembly 20; the control component 40 is arranged on the shell assembly 10 and connected to the input end of the transmission limit assembly 30, and the control component 40 is used to drive the transmission limit assembly 30 to move under the action of external force to release the limit on the clamping arm assembly 20, so that the clamping arm assembly 20 switches from the storage state to the extended state.

[0040] In this embodiment, the housing assembly 10 may include a plurality of outer shells, inner shells, etc., and the whole may be configured as a cylinder or a rectangular parallelepiped, etc., which is not limited here.

[0041] The transmission limiting assembly 30 may include an elastic reset component, a limiting structure for limiting the movement of the clamping arm, etc., without limitation to the specific embodiments.

[0042] The control component 40 can be a button, a push rod, a knob, etc., which is not limited here.

[0043] It can be understood that the present invention adopts an automatic pop-up structure to connect the control component 40 and the clamping arm assembly 20 through the transmission limit assembly 30, thereby realizing one-button automatic pop-up of the clamping arm, greatly improving the convenience of use, avoiding the situation of pinching hands, and improving safety.

[0044] In order to further improve the convenience of operation, improve the compactness of the clamping mechanism as much as possible, and facilitate the assembly of various components, refer to Figures 1 to 3 In one embodiment, the control component 40 is a button, the transmission limit assembly 30 includes a limit member 31 and an elastic member 32, a partition 101 is provided in the shell assembly 10, the limit member 31 is rotatably set on the partition 101 and is connected to the button through the elastic member 32, and the button is connected to the partition 101 through a reset spring 41.

[0045] Among them, a protrusion is provided on the inner side of the button, a pressing arm is provided at a position corresponding to the protrusion of the limit member 31, the clamping arm assembly 20 is provided with a contact protrusion 201, and the limit member 31 is provided with a limiting protrusion 311 corresponding to the position of the abutting protrusion 201; when in the storage state, the limiting protrusion 311 abuts against the abutting protrusion 201, and the protrusion does not contact the pressing arm; when the button is pressed, the protrusion presses down the pressing arm to rotate the limit member 31, the limiting protrusion 311 and the abutting protrusion 201 disengage from each other, and the clamping arm assembly 20 can be switched to the extended state.

[0046] When in use, first press the button, and the return spring 41 inside the button is compressed. At the same time, the protrusion at the lower end of the button contacts the pressing arm of the limiter 31. Since the middle part of the limiter 31 is hinged on the partition 101, under the action of the button, one end of the limiting protrusion 311 on the limiter 31 is tilted up, releasing the limiting effect of the abutting protrusion 201 of the clamping arm, and the clamping arm assembly 20 can automatically pop out.

[0047] During this pressing process, the elastic member 32 is in a compressed state. When the external force applied to the button is cancelled, the elastic member 32 resets, the limiting protrusion 311 moves to the initial position, and the reset spring 41 recovers its deformation, and the button returns to its original state.

[0048] After use, the ejected clamp arm can be gently pushed into the opening of the housing assembly 10 by hand to complete storage.

[0049] In this embodiment, the shell assembly 10 is provided with an opening for accommodating the clamp arm and allowing the clamp arm to pass through. When in the storage state, the clamp arm assembly 20 is embedded in the opening and the outer end surface of the clamp arm assembly 20 covers the opening. The outer end surface can be adapted to the shape of the outer wall surface of the shell assembly 10, so that the clamping mechanism after storage is more coordinated and beautiful as a whole.

[0050] To achieve rapid ejection of the clamp arm, the clamp arm assembly 20 may further include a first clamp arm 21, a second clamp arm 22, and an ejection member 23. The first clamp arm 21 and the second clamp arm 22 are respectively disposed in the two side walls of the housing assembly 10 and are connected by the ejection member 23. The ejection member 23 is used to drive the first clamp arm 21 and the second clamp arm 22 to automatically eject after the limiting protrusion 311 and the abutting protrusion 201 are disengaged from each other. Specifically, under the action of the ejection member 23, the two clamp arms move back to back toward the two sides of the housing assembly 10, thereby extending out of the housing assembly 10. In this embodiment, the outer end surfaces of the first clamp arm 21 and the second clamp arm 22 can both be curved surfaces that are compatible with the cylindrical shell, thereby improving the overall integrity of the product.

[0051] It should be noted that the elastic member 32 and the pop-up member 23 of this embodiment can both be springs, elastic plastic members or elastic components, etc., which are not limited here.

[0052] In order to enable the clamping mechanism to clamp more objects of different sizes and further improve its applicability, in this embodiment, referring to Figures 1 to 4 At least one of the first clamping arm 21 and the second clamping arm 22 is adjustable in length on the housing to adjust the size of the clamping space. To facilitate storage, the first clamping arm 21 and the second clamping arm 22 each include a clamping block and a stretching rod. The clamping block and the stretching rod are rotatably connected, allowing the clamping block to be stored in the opening of the housing assembly 10 and rotated to switch to a clamping position.

[0053] Furthermore, in order to make the two clamp arms pop out and retract more smoothly and ensure safety, refer to Figures 1 to 4 In one embodiment, the clamping mechanism may further include a release mechanism 50, which is provided on the partition 101 and is connected to the first clamping arm 21 and the second clamping arm 22 respectively. The release mechanism 50 is used to make the first clamping arm 21 and the second clamping arm 22 slowly and smoothly pop out to the outside of the shell assembly 10.

[0054] In this embodiment, the slow-release mechanism 50 is a gear set, which includes a first rack 51, a second rack 52, a first guide rod 53, a second guide rod (not shown), a first gear 54, a second gear 55 and a third gear 56, which are respectively provided on the partition 101. The first rack 51 is sleeved on the first guide rod 53 and connected to the inner end of the first clamping arm 21. The teeth on one side of the first rack 51 are engaged with the first gear 54. The second rack 52 is sleeved on the second guide rod and connected to the inner end of the second clamping arm 22. The teeth on one side of the second rack 52 are engaged with the second gear 55. The first gear 54 and the second gear 55 are both engaged with the third gear 56. The first guide rod 53 and the second guide rod are respectively sleeved with a first compression spring and a second compression spring. One end of the first compression spring abuts against the first rack 51, and the other end of the first compression spring abuts against the mounting seat of the first guide rod 53. One end of the second compression spring abuts against the second rack 52, and the other end of the second compression spring abuts against the mounting seat of the second guide rod.

[0055] Based on the above embodiments, mainly referring to Figure 3 and Figure 4 Furthermore, the first clamping arm 21 and the second clamping arm 22 both include a clamping block 211 and a connecting sleeve 212. The clamping block 211 of the first clamping arm 21 is connected to the first rack 51 through its connecting sleeve 212, and the clamping block 211 of the second clamping arm 22 is connected to the second rack 52 through its connecting sleeve 212; wherein, the clamping block 211 of the first clamping arm 21 can rotate relative to its connecting sleeve 212, and the clamping block 211 of the second clamping arm 22 can rotate relative to its connecting sleeve 212; a rotation limiting structure 213 is provided between the clamping block 211 of the first clamping arm 21 and its connecting sleeve 212, and between the clamping block 211 of the second clamping arm 22 and its connecting sleeve 212. The two rotation limiting structures 213 are respectively used to keep the clamping block 211 of the first clamping arm 21 and its connecting sleeve 212 in the target relative position, and the clamping block 211 of the second clamping arm 22 and its connecting sleeve 212 in the target relative position.

[0056] Specifically, if Figure 4As shown, the rotation limiting structure 213 of this embodiment may include an adapter block provided on the clamping block 211 and a mating portion provided on the connecting sleeve 212. The adapter block may be provided with a plurality of engaging protrusions, and the mating portion may be a plurality of grooves that engage with the adapter block. The engaging limiting effect enables the clamping block 211 to rotate at a specific angle, preventing the clamping block 211 from shifting during use and providing more stable clamping. It should be noted that the number of engaging protrusions may be less than the number of grooves. The clamping block 211 has multiple stable support angles. These support angles are related to the number and distribution of the engaging protrusions and grooves, and can be designed accordingly according to the specific application scenario, which is not limited here.

[0057] Main reference Figure 1 and Figure 2 In some embodiments, the clamping mechanism may further include a rotating member 60, which is rotatably disposed on the shell assembly 10 and is used to drive the shell assembly 10 and the clamping arm assembly 20 to rotate relative to the partition 101 under the drive of an external force to adjust the direction of the clamping arm assembly 20 clamping the object.

[0058] In this embodiment, the rotating part 60 is a knob mounted on the outer periphery of the shell assembly 10. When the user rotates the knob, the entire shell can be rotated, while the partition 101 remains stationary, and the clamping arm assembly 20 is adjusted to the target position, thereby meeting the requirements for the clamping angle in different scenarios.

[0059] In order to further improve the reliability of the clamping mechanism in supporting and fixing the object, in some embodiments, the clamping mechanism may further include a magnetic member, which is provided on the surface or inside of the shell assembly 10 and is used to adsorb and fix the object to be clamped.

[0060] In addition, a wireless charging coil, an interface for wired charging, etc. can be set in the shell assembly 10 to realize the charging function, which helps to extend the battery life of the electronic device to be supported and is more convenient for users to use.

[0061] The present invention also proposes a supporting device, which includes a pull rod assembly and a clamping mechanism arranged on the top of the pull rod assembly. The specific structure of the clamping mechanism refers to the above-mentioned embodiment. Since the supporting device proposed by the present invention includes all schemes of all embodiments of the above-mentioned clamping mechanism, it has at least the same technical effect as the above-mentioned clamping mechanism, which will not be elaborated here one by one.

[0062] like Figure 1 As shown, in this embodiment, the end of the pull rod assembly and the main body of the clamping mechanism can be connected by a connecting rod 210. The connecting rod 210 may include two parts, one of which is connected to the pull rod assembly and the other is connected to the main body of the clamping mechanism. A rotational connection can be adopted between the two so that the clamping mechanism can perform pitch motion relative to the pull rod assembly, thereby meeting the requirements for support angles in scenarios such as overhead or downward shooting.

[0063] The above description is merely an optional embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by utilizing the contents of the present invention specification and drawings under the inventive concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A clamping mechanism, characterized in that: include: housing assembly; a clamping arm assembly, switchably disposed on the housing assembly between a retracted state and an extended state; A transmission limiting assembly is provided in the housing assembly, wherein the output end of the transmission limiting assembly is used to limit the extension of the clamping arm assembly; as well as A manipulation component is provided on the shell assembly and connected to the input end of the transmission limit assembly. The manipulation component is used to drive the transmission limit assembly to move under the action of an external force to release the limit on the clamping arm assembly, so that the clamping arm assembly switches from the storage state to the extended state.

2. The clamping mechanism according to claim 1, wherein: The control component is a button, the transmission limit assembly includes a limit member and an elastic member, a partition is provided in the housing assembly, the limit member is rotatably mounted on the partition and connected to the button via the elastic member, and the button is connected to the partition via a return spring; In which, a protrusion is provided on the inner side of the button, a pressing arm is provided at a position of the limiting member corresponding to the protrusion, the clamping arm assembly is provided with an abutting protrusion, and the limiting member is provided with a limiting protrusion corresponding to the position of the abutting protrusion; in the stored state, the limiting protrusion abuts against the abutting protrusion, and the protrusion does not contact the pressing arm; when the button is pressed, the protrusion presses down the pressing arm to rotate the limiting member, the limiting protrusion and the abutting protrusion disengage from each other, and the clamping arm assembly switches to the extended state.

3. The clamping mechanism according to claim 2, wherein: The clamp arm assembly includes a first clamp arm, a second clamp arm and a pop-up member. The first clamp arm and the second clamp arm are respectively arranged in the two side walls of the shell assembly and are connected by the pop-up member. The pop-up member is used to drive the first clamp arm and the second clamp arm to automatically pop out after the limiting protrusion and the abutting protrusion are disengaged from each other.

4. The clamping mechanism according to claim 3, wherein: The clamping mechanism further includes a slow-release mechanism, which is disposed on the partition and connected to the first clamping arm and the second clamping arm, respectively, and is used to allow the first clamping arm and the second clamping arm to slowly and smoothly pop out to the outside of the shell assembly.

5. The clamping mechanism according to claim 4, wherein: The slow release mechanism includes a first rack, a second rack, a first guide rod, a second guide rod, a first gear, a second gear and a third gear respectively arranged on the partition, the first rack is sleeved on the first guide rod and connected to the inner end of the first clamp arm, the toothed portion on one side of the first rack is meshed with the first gear, the second rack is sleeved on the second guide rod and connected to the inner end of the second clamp arm, the toothed portion on one side of the second rack is meshed with the second gear, the first gear and the second gear are both meshed with the third gear, the first guide rod and the second guide rod are respectively sleeved with a first compression spring and a second compression spring, one end of the first compression spring abuts against the first rack, the other end of the first compression spring abuts against the mounting seat of the first guide rod, one end of the second compression spring abuts against the second rack, and the other end of the second compression spring abuts against the mounting seat of the second guide rod.

6. The clamping mechanism according to claim 5, wherein: The first clamping arm and the second clamping arm each include a clamping block and a connecting sleeve, the clamping block of the first clamping arm is connected to the first rack via its connecting sleeve, and the clamping block of the second clamping arm is connected to the second rack via its connecting sleeve; In which, the clamping block of the first clamping arm can rotate relative to its connecting sleeve, and the clamping block of the second clamping arm can rotate relative to its connecting sleeve; a rotation limiting structure is provided between the clamping block of the first clamping arm and its connecting sleeve, and between the clamping block of the second clamping arm and its connecting sleeve, and the two rotation limiting structures are respectively used to keep the clamping block of the first clamping arm and its connecting sleeve in a target relative position, and the clamping block of the second clamping arm and its connecting sleeve in a target relative position.

7. The clamping mechanism according to claim 3, wherein: At least one of the first clamping arm and the second clamping arm is adjustable in length on the housing to adjust the size of the clamping space.

8. The clamping mechanism according to claim 2, wherein: The clamping mechanism also includes a rotating member, which is rotatably arranged on the shell assembly and is used to drive the shell assembly and the clamping arm assembly to rotate relative to the partition under the drive of an external force to adjust the direction of the clamping arm assembly clamping the object.

9. The clamping mechanism according to claim 1, wherein: The clamping mechanism further includes a magnetic member, which is disposed on the surface or inside of the housing assembly and is used to absorb and fix the object to be clamped.

10. A supporting device, characterized in that: The invention comprises a pull rod assembly and a clamping mechanism according to any one of claims 1 to 9, which is arranged on the top of the pull rod assembly.

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