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 main shell, a clamping arm assembly, a gear transmission mechanism and a rotary knob. The clamping arm assembly is arranged on the main shell in the mode that the clamping arm assembly can be switched between a storage state and an extending state. The gear transmission mechanism is arranged in the main shell, and the output end of the gear transmission mechanism is connected with the clamping arm assembly. The knob is arranged on the main shell and connected with the input end of the gear transmission mechanism, and the knob is used for driving the gear transmission mechanism to move under the action of external force and driving the clamping arm assembly to be switched from the storage state to the stretching state. The clamping structure of the supporting device is improved, the operation convenience is improved, more labor is saved, and the application range is wide.

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, which is used to clamp 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 place it against the base of the clamping mechanism, and then release the handle so that the electronic device is clamped between the two clamping arms, thereby completing the clamping and fixing.

[0003] However, the support device mainly relies on the clamping force generated by the clamping mechanism to fix the electronic device, so the force acting on the elastic member is relatively large. For users with less strength, the manual stretching process of the clamping arm is relatively laborious and inconvenient to use. Utility Model Content

[0004] The main purpose of the utility model is to provide a clamping mechanism and a supporting device, aiming to improve the convenience of operating the clamping mechanism of the supporting device.

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

[0006] main shell;

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

[0008] a gear transmission mechanism disposed in the main housing, wherein an output end of the gear transmission mechanism is connected to the clamping arm assembly; and

[0009] A knob is provided on the main housing and connected to the input end of the gear transmission mechanism. The knob is used to drive the gear transmission mechanism to move under the action of an external force and drive the clamping arm assembly to switch from the storage state to the extended state.

[0010] Optionally, the clamp arm assembly includes a first clamp arm and a second clamp arm, and the first clamp arm and the second clamp arm each include a clamp block and a connecting rod connected to the clamp block;

[0011] The gear transmission mechanism includes a driving gear, a first transmission gear, a second transmission gear, a first rack and a second rack. The driving gear is connected to the knob and meshes with the first transmission gear and the second transmission gear respectively. A positioning ring is provided in the main housing. The first transmission gear and the second transmission gear are both rotatably set on the positioning ring. The positioning ring is provided with an avoidance hole for the side of the driving gear connected to the knob to pass through. The first transmission gear is meshed with the first rack, the first rack is connected to the first clamping arm, the second transmission gear is meshed with the second rack, and the second rack is connected to the second clamping arm.

[0012] Optionally, the first rack includes a first rack body and a first hollow output shaft connected to the first rack body, the first rack body is provided with a first accommodating groove communicating with the first hollow output shaft, and the first hollow output shaft is connected to the connecting rod of the first clamping arm; the second rack includes a second rack body and a second hollow output shaft connected to the second rack body, the second rack body is provided with a second accommodating groove communicating with the second hollow output shaft, and the second hollow output shaft is connected to the connecting rod of the second clamping arm;

[0013] The first rack cover is disposed on the second rack, and the first hollow output shaft is accommodated in the second accommodating groove, and the second hollow output shaft is accommodated in the first accommodating groove.

[0014] Optionally, a boss is provided on the positioning ring, the avoidance hole is opened on the boss, a plurality of spaced notches are provided on the outer periphery of the boss, the knob is provided on the main shell through a knob seat, the knob seat is sleeved on the outer periphery of the boss and at least one elastic damping member is provided therebetween, a positioning groove is provided on the inner peripheral wall of the knob seat for accommodating one end of the elastic damping member, and the other end of the elastic damping member is placed in one of the notches.

[0015] Optionally, the elastic damping member includes a spring and a ball disposed at an end of the spring, and the ball is rollably disposed on the outer peripheral wall of the boss.

[0016] Optionally, the clamping block of the first clamping arm can rotate relative to the first hollow output shaft, and the clamping block of the second clamping arm can rotate relative to the second hollow output shaft; a rotation limiting structure is provided between the clamping block of the first clamping arm and the outer end portion of the first hollow output shaft, and between the clamping block of the second clamping arm and the outer end portion of the second hollow output shaft, and the two rotation limiting structures are respectively used to keep the clamping block of the first clamping arm and the first hollow output shaft in a target relative position, and the clamping block of the second clamping arm and the second hollow output shaft in a target relative position.

[0017] Optionally, the clamping mechanism further includes a magnetic component, which is disposed in the main shell and is used to absorb and fix the object to be clamped.

[0018] Optionally, two opposite receiving grooves are provided on the outer periphery of the main shell, and in the receiving state, the clamping block of the first clamping arm and the clamping block of the second clamping arm are respectively received in the receiving grooves.

[0019] Optionally, the main shell is cylindrical, the clamping block is an arc-shaped block structure whose curvature is consistent with the curvature of the outer peripheral wall of the main shell, and the receiving groove is adapted to the shape of the clamping block.

[0020] To achieve the above object, the present invention further provides a supporting device, comprising the above-mentioned clamping mechanism, wherein the clamping mechanism comprises:

[0021] main shell;

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

[0023] a gear transmission mechanism disposed in the main housing, wherein an output end of the gear transmission mechanism is connected to the clamping arm assembly; and

[0024] A knob is provided on the main housing and connected to the input end of the gear transmission mechanism. The knob is used to drive the gear transmission mechanism to move under the action of an external force and drive the clamping arm assembly to switch from the storage state to the extended state.

[0025] In the technical solution of the present invention, the clamping mechanism includes a main housing, a clamping arm assembly, a gear transmission mechanism, and a knob; the clamping arm assembly is switchably arranged on the main housing between a retracted state and an extended state; the gear transmission mechanism is arranged in the main housing, and the output end of the gear transmission mechanism is connected to the clamping arm assembly; the knob is arranged on the main housing and connected to the input end of the gear transmission mechanism, and the knob is used to drive the gear transmission mechanism to move under the action of an external force and drive the clamping arm assembly to switch from the retracted state to the extended state. It can be understood that the present invention improves the structure of the clamping mechanism. When in use, the clamping arm assembly can be opened by manually rotating the knob, which is more labor-saving and greatly improves the convenience of operating the clamping mechanism. 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 1This is a structural diagram of an embodiment of the clamping mechanism of the present utility model;

[0028] Figure 2 An exploded view of an embodiment of the clamping mechanism of the present invention;

[0029] Figure 3 This is another exploded view of an embodiment of the clamping mechanism of the present invention;

[0030] Figure 4 This is another exploded view of an embodiment of the clamping mechanism of the present invention;

[0031] Figure 5 This is a schematic diagram of the connection between the gear transmission mechanism and the clamping arm assembly in one embodiment of the clamping mechanism of the present invention.

[0032] Description of Figure Numbers:

[0033] 10. Main housing; 20. Clamp arm assembly; 30. Gear transmission mechanism; 40. Knob; 11. Positioning ring; 111. Boss; 10a. Receiving groove; 21. First clamp arm; 22. Second clamp arm; 203. Rotation limiting structure; 31. Drive gear; 32. First transmission gear; 33. Second transmission gear; 34. First rack; 35. Second rack; 341. First rack body; 342. First hollow output shaft; 351. Second rack body; 351a. Second accommodating groove; 41. Knob seat; 411. Elastic damping member; 60. Connecting member.

[0034] 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

[0035] 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 making creative efforts are within the scope of protection of the present invention.

[0036] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications 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 indications will also change accordingly.

[0037] 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.

[0038] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. 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 such features. In addition, if the meaning of "and / or" appearing in the full text is to include three parallel schemes, taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. 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 invention.

[0039] 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.

[0040] Reference Figures 1 to 4 In one embodiment of the present invention, the clamping mechanism includes a main shell 10, a clamping arm assembly 20, a gear transmission mechanism 30 and a knob 40; the clamping arm assembly 20 is switchably arranged on the main shell 10 between a storage state and an extended state; the gear transmission mechanism 30 is arranged in the main shell 10, and the output end of the gear transmission mechanism 30 is connected to the clamping arm assembly 20; the knob 40 is arranged on the main shell 10 and connected to the input end of the gear transmission mechanism 30, and the knob 40 is used to drive the gear transmission mechanism 30 to move under the action of external force and drive the clamping arm assembly 20 to switch from the storage state to the extended state.

[0041] In this embodiment, the main shell 10 can be a shell, or can include several outer shells, inner shells, etc. The whole can be set to be a cylinder or a rectangular parallelepiped, etc., which is not limited here.

[0042] The gear transmission mechanism 30 may include a plurality of gears, and the type and size of the gears are not limited here.

[0043] It can be understood that the present invention improves the clamping structure of the support device, and drives the clamping arm assembly 20 to move by providing a knob 40 and a gear transmission mechanism 30, which greatly improves the convenience of operating the clamping mechanism and is more labor-saving than the existing technology.

[0044] In order to achieve better switching between the stowed state and the extended state of the clamping arm assembly 20, further improve the convenience of operation, and improve the compactness of the clamping mechanism structure, refer to Figures 1 to 5 In one embodiment, the clamping arm assembly 20 includes a first clamping arm 21 and a second clamping arm 22, and the first clamping arm 21 and the second clamping arm 22 both include a clamping block and a connecting rod connected to the clamping block; the gear transmission mechanism 30 may include a driving gear 31, a first transmission gear 32, a second transmission gear 33, a first rack 34 and a second rack 35, the driving gear 31 is connected to the knob 40 and meshes with the first transmission gear 32 and the second transmission gear 33 respectively, a positioning ring 11 is provided in the main shell 10, the first transmission gear 32 and the second transmission gear 33 are both rotatably set on the positioning ring 11, the positioning ring 11 is provided with an avoidance hole for the side connected to the drive gear 31 and the knob 40 to pass through, the first transmission gear 32 is meshed with the first rack 34, the first rack 34 is connected to the first clamping arm 21, the second transmission gear 33 is meshed with the second rack 35, and the second rack 35 is connected to the second clamping arm 22.

[0045] When in use, the knob 40 is manually rotated, and driven by the knob 40, the drive gear 31 rotates, and through the cooperation of the transmission gear and the rack, the first clamping arm 21 and the second clamping arm 22 are unfolded, thereby achieving auxiliary clamping of the electronic device.

[0046] Furthermore, please combine Figure 3 and Figure 5 The first rack 34 includes a first rack body 341 and a first hollow output shaft 342 connected to the first rack body 341. The first rack body 341 defines a first receiving groove that communicates with the first hollow output shaft 342, which is connected to the connecting rod of the first clamping arm 21. The second rack 35 includes a second rack body 351 and a second hollow output shaft connected to the second rack body 351. The second rack body 351 defines a second receiving groove 351a that communicates with the second hollow output shaft, which is connected to the connecting rod of the second clamping arm 22. The first rack 34 is mounted on the second rack 35, with the first hollow output shaft 342 received in the second receiving groove 351a and the second hollow output shaft received in the first receiving groove. This not only achieves synchronized movement of the first and second clamping arms 21 and 22, further improving the ease of operation of the clamping mechanism, but also helps to further improve the compactness of the internal structure of the clamping mechanism, further reducing its overall size.

[0047] Main reference Figure 3 and Figure 4 In one embodiment, the positioning ring 11 may be provided with a boss 111, with an avoidance hole defined in the middle of the boss 111. The outer periphery of the boss 111 is provided with a plurality of spaced notches. The knob 40 is mounted on the main housing 10 via a knob seat 41. The knob seat 41 is sleeved around the outer periphery of the boss 111, with at least one elastic damping member 411 disposed therebetween. The inner wall of the knob seat 41 is provided with a positioning groove for accommodating one end of the elastic damping member 411, with the other end of the elastic damping member 411 disposed within one of the notches. This effectively restricts the knob 40 assembly, ensuring that the knob 40 can only rotate when a certain force is applied to the knob 40, thereby effectively preventing accidental activation that could cause the clamp arm assembly 20 to deploy.

[0048] In this embodiment, the elastic damping member 411 may include a spring and a ball disposed at the end of the spring. The ball may be rollably disposed on the outer peripheral wall of the boss 111 to ensure smooth rotation of the knob 40 and provide a damping feeling.

[0049] In order to further expand the support angle range of the clamping mechanism for clamping objects and ensure the stability of the clamping arm assembly 20 for clamping objects, further, mainly referring to Figure 5 The clamping block of the first clamping arm 21 can rotate relative to the first hollow output shaft 342, and the clamping block of the second clamping arm 22 can rotate relative to the second hollow output shaft; a rotation limiting structure 203 is provided between the clamping block of the first clamping arm 21 and the outer end of the first hollow output shaft 342, and between the clamping block of the second clamping arm 22 and the outer end of the second hollow output shaft. The two rotation limiting structures 203 are respectively used to keep the clamping block of the first clamping arm 21 and the first hollow output shaft 342 in the target relative position, and the clamping block of the second clamping arm 22 and the second hollow output shaft in the target relative position.

[0050] Specifically, the rotation limiting structure 203 of this embodiment may include an adapter block provided on the clamping block and a mating portion provided on the hollow output shaft. 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. This engaging limiting effect enables the clamping block to rotate at a specific angle, preventing displacement of the clamping block 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 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.

[0051] In order to further improve the compactness of the clamping mechanism structure and reduce the product volume, refer to Figures 1 to 3In one embodiment, the outer periphery of the main housing 10 may be provided with two opposing receiving grooves 10a. In the stowed state, the clamping blocks of the first clamping arm 21 and the second clamping arm 22 are respectively accommodated within the receiving grooves 10a. Preferably, the main housing 10 may be cylindrical, and the clamping blocks are curved blocks with a curvature consistent with that of the outer periphery of the main housing 10. The receiving grooves 10a are adapted to the shape of the clamping blocks. This results in a smaller size of the clamping mechanism in the stowed state, resulting in a more aesthetically pleasing product.

[0052] Furthermore, to further enhance the stability of the clamping mechanism and expand its scope of application, in one embodiment, the clamping mechanism may further include a magnetic element disposed within the main housing 10 and configured to attract and secure the object to be clamped. This arrangement utilizes magnetic attraction in conjunction with the clamping arm assembly 20 to ensure a more secure grip of the electronic device by the clamping mechanism.

[0053] The present invention also proposes a supporting device, which includes a clamping mechanism. 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 effects as the above-mentioned clamping mechanism, which will not be elaborated here one by one.

[0054] In one embodiment of the present invention, the support device further comprises a handle or a pull rod assembly, such as Figure 1 As shown, the handle or pull rod assembly and the clamping mechanism can be connected through a rod-shaped connecting member 60. The clamping mechanism as a whole can rotate relative to the handle or pull rod assembly. The clamping mechanism can swing and perform pitch motion to maximize the angle range of the object supported by the support device and meet the support requirements in more application scenarios.

[0055] 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: main shell; a clamping arm assembly, switchably disposed on the main housing between a retracted state and an extended state; the clamping arm assembly comprises a first clamping arm and a second clamping arm, each of the first clamping arm and the second clamping arm comprising a clamping block and a connecting rod connected to the clamping block; A gear transmission mechanism is disposed in the main housing, wherein an output end of the gear transmission mechanism is connected to the clamping arm assembly; the gear transmission mechanism includes a driving gear, a first transmission gear, a second transmission gear, a first rack and a second rack; as well as A knob is provided on the main housing and connected to the input end of the gear transmission mechanism. The knob is used to drive the gear transmission mechanism to move under the action of external force and drive the clamping arm assembly to switch from the storage state to the extended state; the driving gear is connected to the knob and is respectively engaged with the first transmission gear and the second transmission gear. A positioning ring is provided in the main housing. The first transmission gear and the second transmission gear are both rotatably arranged on the positioning ring. The positioning ring is provided with an avoidance hole for the side of the driving gear connected to the knob to pass through. The first transmission gear is engaged with the first rack, the first rack is connected to the first clamping arm, the second transmission gear is engaged with the second rack, and the second rack is connected to the second clamping arm.

2. The clamping mechanism according to claim 1, wherein: The first rack includes a first rack body and a first hollow output shaft connected to the first rack body, the first rack body defines a first receiving groove communicating with the first hollow output shaft, and the first hollow output shaft is connected to the connecting rod of the first clamping arm; the second rack includes a second rack body and a second hollow output shaft connected to the second rack body, the second rack body defines a second receiving groove communicating with the second hollow output shaft, and the second hollow output shaft is connected to the connecting rod of the second clamping arm; The first rack cover is disposed on the second rack, and the first hollow output shaft is accommodated in the second accommodating groove, and the second hollow output shaft is accommodated in the first accommodating groove.

3. The clamping mechanism according to claim 1, wherein: A boss is provided on the positioning ring, the avoidance hole is opened on the boss, a plurality of notches are provided at intervals on the outer periphery of the boss, the knob is provided on the main shell through a knob seat, the knob seat is sleeved on the outer periphery of the boss and at least one elastic damping member is provided between the two, a positioning groove is provided on the inner peripheral wall of the knob seat for accommodating one end of the elastic damping member, and the other end of the elastic damping member is placed in one of the notches.

4. The clamping mechanism according to claim 3, wherein: The elastic damping member includes a spring and a ball disposed at the end of the spring, and the ball is rollably disposed on the outer peripheral wall of the boss.

5. The clamping mechanism according to claim 2, wherein: The clamping block of the first clamping arm can rotate relative to the first hollow output shaft, and the clamping block of the second clamping arm can rotate relative to the second hollow output shaft; a rotation limiting structure is provided between the clamping block of the first clamping arm and the outer end portion of the first hollow output shaft, and between the clamping block of the second clamping arm and the outer end portion of the second hollow output shaft, and the two rotation limiting structures are respectively used to maintain the clamping block of the first clamping arm and the first hollow output shaft in a target relative position, and the clamping block of the second clamping arm and the second hollow output shaft in a target relative position.

6. The clamping mechanism according to claim 1, wherein: The clamping mechanism further includes a magnetic component, which is disposed in the main shell and is used to absorb and fix the object to be clamped.

7. The clamping mechanism according to claim 1, wherein: Two opposite receiving grooves are provided on the outer periphery of the main shell. In the receiving state, the clamping block of the first clamping arm and the clamping block of the second clamping arm are respectively received in the receiving grooves.

8. The clamping mechanism according to claim 7, wherein: The main shell is cylindrical, the clamping block is an arc-shaped block structure whose curvature is consistent with the curvature of the outer peripheral wall of the main shell, and the receiving groove is adapted to the shape of the clamping block.

9. A supporting device, characterized in that: It comprises the clamping mechanism according to any one of claims 1 to 8.

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