Quick connecting device and photographic equipment

Abstract

The utility model belongs to the technical field of photographic equipment, and relates to a quick connecting device and photographic equipment, which comprises a base unit and a quick mounting unit detachably connected with the base unit. The base unit comprises a base and a locking ring, and the locking ring is matched with the base; the locking ring is provided with a containing space and an opening part, and the opening part is communicated with the containing space; the accommodating space is used for accommodating the quick-mounting unit; the opening part is movably connected with a locking unit, and after the locking ring is matched with the base, the base and the containing space form a mounting chamber; after the quick-mounting unit is placed in the mounting chamber, the quick-mounting unit and the base are relatively fixed under the action of the locking ring. After the structure is adopted, the locking mechanism has the beneficial effects that the structure is simple, single-action quick locking / unlocking between equipment can be realized, and the rotating angle is less than or equal to 90 degrees; the force required to be applied by the locking operation is reduced; the rapid plug-in expansion of the intermediate equipment is supported; and the anti-torsion stability in a locking state is ensured.

Description

Technical Field

[0001] This utility model belongs to the field of photographic equipment technology, specifically, it relates to a quick connection device and photographic equipment. Background Technology

[0002] In the field of photographic equipment, the need for quick connections between devices is becoming increasingly prominent. Traditional equipment (such as tripods, ball heads, equatorial mounts, etc.) generally uses standard threaded interfaces (such as 3 / 8-inch screws) for connection.

[0003] Taking the connection between a tripod and a gimbal as an example, the operation requires aligning the screw hole at the bottom of the gimbal with the screw at the top of the tripod and rotating it multiple times to tighten it. When inserting intermediate equipment (such as an equatorial mount), the gimbal must be completely disassembled before installing the new equipment layer by layer. This type of threaded connection has the following inherent drawbacks: 1. Cumbersome operation: Each installation requires multiple rotations (usually 5-10 rotations), and disassembly also requires multiple rotations in the opposite direction; 2. High physical exertion: To ensure equipment stability, a large torque must be applied for tightening, requiring high hand strength; 3. Poor expandability: Inserting intermediate equipment requires complete disassembly of the existing connection structure; 4. Difficult one-handed operation: When the gimbal is already equipped with equipment such as a camera, it is difficult to complete the disassembly and assembly operations with one hand; 5. Limited angle adjustment: Traditional threads cannot achieve quick angle positioning, requiring repeated adjustments to the locking position. Therefore, it is necessary to improve this method. Utility Model Content

[0004] In order to solve the above-mentioned problems in the prior art, this utility model provides a quick connection device and photographic equipment to solve the connection problems existing in traditional threaded connections.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] As one aspect of this utility model, a quick connection device is proposed, which includes: a base unit and a quick-installation unit, wherein the quick-installation unit is detachably connected to the base unit;

[0007] The base unit includes a base and a locking ring, the locking ring cooperating with the base; the locking ring has a receiving space and an opening, the opening communicating with the receiving space; the receiving space is used to accommodate the quick-installation unit;

[0008] A locking unit is movably connected to the opening. After the locking ring cooperates with the base, the base and the receiving space form an installation chamber. After the quick-installation unit is placed into the installation chamber, the quick-installation unit is relatively fixed to the base under the action of the locking ring.

[0009] Optionally, the quick-installation unit includes a quick-installation base that is adapted to an installation chamber formed by a base and a receiving space.

[0010] Optionally, the inner wall of the locking ring is provided with at least two inner connecting grooves at intervals; a snap-fit ​​position is formed between two adjacent inner connecting grooves; the outer side of the quick-release base is provided with an outer connecting groove that mates with the corresponding inner connecting groove.

[0011] Optionally, the base includes a base body, one end of which has a first connecting protrusion formed outward, and the bottom of the locking ring has a first mating protrusion formed towards the receiving space. When the locking ring mates with the base, the first mating protrusion mates with the first connecting protrusion, and the first connecting protrusion is located within the receiving space.

[0012] Optionally, the base body is provided with a second limiting protrusion, which is located below the first connecting protrusion. A mating space is formed between the second limiting protrusion and the first connecting protrusion, and the first mating protrusion mates with the mating space.

[0013] Optionally, the base body has a first positioning element on its side, and the locking ring has a first mating groove that mates with the first positioning element.

[0014] Optionally, the locking unit includes a pull rod that is movably inserted through mounting holes on both sides of the opening of the locking ring. One end of the pull rod is threadedly connected to a limit nut. The other end of the pull rod is movably connected to a locking handle via a connecting pin. The other end of the pull rod forms a third limiting protrusion, and the opening is provided with a limiting groove that mates with the third limiting protrusion.

[0015] Optionally, it also includes an anti-loosening unit, which includes an elastic plunger connected to the side of the quick-release base and a pin mounting through hole provided on the locking ring. The plunger end of the elastic plunger engages with the pin mounting through hole. The inner end face of the pin mounting through hole forms a guide slope.

[0016] An unlocking pin is movably inserted through the pin mounting hole; the inner end face of the unlocking pin mates with the plunger end face of the corresponding elastic plunger, and the outer end face of the unlocking pin extends to the outside of the locking ring.

[0017] Optionally, the unlocking pin has a travel limiting groove on its side, and the locking ring has a pin limiting hole that communicates with the pin mounting through hole; a limiting pin is connected to the pin limiting hole, and part of the limiting pin cooperates with the travel limiting groove.

[0018] As another aspect of this invention, a photographic apparatus is proposed, which includes the quick-connect device as described above.

[0019] The advantages of this utility model's quick-connect device and photographic equipment are specifically reflected in the following aspects: 1. Simple structure, enabling quick locking / unlocking of devices with a single action, rotation angle ≤90°; reducing the force required for locking operations; supporting quick insertion and expansion of intermediate devices; allowing the entire operation process to be completed with one hand; ensuring torsional stability in the locked state. 2. Quick alignment and disassembly are achieved through the locking unit's cooperation with the quick-connect unit. Attached Figure Description

[0020] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention.

[0021] Figure 1 This is a front view of the structure of the quick-connect device according to Embodiment 1 of this utility model;

[0022] Figure 2 This is a rear view of the quick-connect device according to Embodiment 1 of this utility model;

[0023] Figure 3 This is a cross-sectional view of the quick-connect device according to Embodiment 1 of this utility model;

[0024] Figure 4 This is an exploded front view of the quick-connect device according to Embodiment 1 of this utility model;

[0025] Figure 5 This is an exploded bottom view of the quick-connect device according to Embodiment 1 of this utility model;

[0026] Figure 6 This is an exploded view of the base and locking ring of Embodiment 1 of this utility model;

[0027] Figure 7 This is a schematic diagram of the locking unit of Embodiment 1 of this utility model;

[0028] Figure 8 This is a three-dimensional structural view of the quick-connect device according to Embodiment 2 of this utility model;

[0029] Figure 9 This is a schematic diagram of the anti-loosening unit in Embodiment 2 of this utility model;

[0030] Figure 10 This is an exploded view of the anti-loosening unit of Embodiment 2 of this utility model;

[0031] Figure 11 This is an exploded view of the anti-loosening unit of Embodiment 2 of this utility model. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0033] Example 1

[0034] One embodiment of this application provides a quick connection device, such as... Figures 1-7 As shown, it includes: a base unit 1, which serves as a support and connection.

[0035] Quick-connect unit 2 is detachably connected to base unit 1. In use, base unit 1 can be detachably connected to a tripod or equatorial mount, etc.; quick-connect unit 2 is connected to the equatorial mount or gimbal. In this way, the equatorial mount can be detachably connected to the tripod, and the gimbal can be detachably connected to the equatorial mount, realizing quick connection of different components.

[0036] It should be noted that this quick-connect device and photographic equipment are not limited to connecting photographic equipment, but are also applicable to assembly parts that need to be disassembled.

[0037] Specifically, in this embodiment, such as Figures 1-6 As shown, the base unit 1 includes a base 11 and a locking ring 12. The base 11 is connected to the carrier to be connected. The locking ring 12 cooperates with the base 11. The locking ring 12 has a receiving space 121 and an opening 122, and the opening 122 is connected to the receiving space 121. The receiving space 121 is used to receive the quick-installation unit 2. A locking unit 13 is movably connected to the opening 122. After the locking ring 12 cooperates with the base 11, the base 11 and the receiving space 121 form an installation chamber. After the quick-installation unit 2 is placed into the installation chamber, the locking unit 13 locks it. Under the action of the locking ring 12, the quick-installation unit 2 is relatively fixed to the base 11, achieving a quick connection between the quick-installation unit 2 and the base unit 1.

[0038] Specifically, in this embodiment, the quick-installation unit 2 includes a quick-installation base 21, which is adapted to the installation chamber formed by the base 11 and the accommodating space 121. The locking ring 12 locks the quick-installation base 21 to realize the connection between the quick-installation unit 2 and the base unit 1.

[0039] The quick-release base 21 is provided with a connector 22, which is used to connect photographic components such as gimbals, cameras, and equatorial mounts. As an example, the connector 22 is a connecting screw.

[0040] Furthermore, a first connecting step hole 23 is formed on the quick-release base 21, and the connector 22 is connected to the first connecting step hole 23 to connect photographic components such as gimbals, cameras, and equatorial mounts to the quick-release base 21.

[0041] Furthermore, one or more tightening screws 24 are movably connected to the quick-release base 21 to tighten photographic components such as the gimbal, camera, and equatorial mount, preventing them from coming loose.

[0042] Furthermore, the quick-release base 21 has one or more first screw holes 25, through which screws are used to fasten photographic components such as the gimbal, camera, and equatorial mount.

[0043] Furthermore, in this embodiment, as Figures 3-7 As shown, the inner wall of the locking ring 12 is provided with at least two inner connecting grooves 125 at intervals, and the inner connecting grooves 125 are horizontal; a snap-fit ​​position is formed between two adjacent inner connecting grooves 125; as an example, the inner connecting groove 125 is a threaded groove; the outer side of the quick-release base 21 is provided with an outer connecting groove 211 that mates with the corresponding inner connecting groove 125. When the quick-release base 21 mates with the locking ring 12, the outer connecting groove 211 enters the receiving space 121 from the snap-fit ​​position formed between the two inner connecting grooves 125. Then, the quick-release unit 2 or the base unit 1 is rotated to make the outer connecting groove 211 mate with the inner connecting groove 125. After locking, an interlocking force is formed between the outer connecting groove 211 and the inner connecting groove 125 to achieve relative fixation of the connecting parts.

[0044] Furthermore, in this embodiment, as Figure 3 As shown, the base 11 includes a base body 111. A first connecting protrusion 112 is formed outward at one end of the base body 111. A first mating protrusion 123 is formed at the bottom of the locking ring 12 towards the receiving space 121. When the locking ring 12 is engaged with the base 11, the first mating protrusion 123 engages with the first connecting protrusion 112, and the first connecting protrusion 112 is located within the receiving space 121. In the locked state, the outer wall of the first connecting protrusion 112 is in contact with the receiving space 121, so that the locking ring 12 and the base 11 are relatively limited and fixed.

[0045] Furthermore, such as Figure 3As shown, in this embodiment, the base body 111 is provided with a second limiting protrusion 113, which is located below the first connecting protrusion 112. A mating space is formed between the second limiting protrusion 113 and the first connecting protrusion 112. The first mating protrusion 123 mates with the mating space, facilitating the clamping operation of the first mating protrusion 123. As an example, in this embodiment, the second limiting protrusion 113 is composed of multiple spaced limiting screws. The multiple limiting screws are spaced and connected to the base body 111. A mating space is formed between the nut of the limiting screw and the first connecting protrusion 112, and the first mating protrusion 123 moves within this mating space. The use of limiting screws facilitates the assembly of the locking ring 12.

[0046] Furthermore, such as Figure 3 and Figure 5 As shown, in this embodiment, the base body 111 is provided with a first clearance hole 114 to facilitate the clearance installation of components.

[0047] Furthermore, such as Figure 4 As shown, in this embodiment, the base body 111 is provided with a plurality of first mounting holes 115 at intervals, which facilitates the connection of the base unit 1 to the corresponding component.

[0048] Furthermore, such as Figures 6-7 As shown, in this embodiment, the base body 111 is provided with a first positioning member 116 on its side. The first positioning member 116 is a positioning pin. The locking ring 12 is provided with a first mating groove 124 that cooperates with the first positioning member 116. The cooperation between the first positioning member 116 and the first mating groove 124 prevents relative rotation between the locking ring 12 and the base 11.

[0049] Specifically, in this embodiment, such as Figure 7As shown, the locking unit 13 includes a pull rod 131, which is movably inserted through mounting through holes 1221 on both sides of the opening 122 of the locking ring 12. The center of the mounting through holes 1221 is perpendicular to the opening direction of the opening 122 for optimal effect. Pulling the pull rod 131 can increase or decrease the size of the opening 122. When the opening 122 is increased, the locking ring 12 is in a locked state; when the opening 122 is decreased, the locking ring 12 is in a loosened state. One end of the pull rod 131 is threadedly connected to a limit nut 132; the other end of the pull rod 131... A locking handle 134 is movably connected via a connecting pin 133. The end of the locking handle 134 near the pull rod 131 forms a first mating part 135 and a second mating part 136 that cooperate with the opening 122. When the locking handle 133 is moved away from the limiting nut 132, the first mating part 135 of the locking handle 133 is engaged with the opening 122, and the locking ring 12 is in a locked state. When the locking handle 133 is moved closer to the limiting nut 132, the second mating part 136 of the locking handle 133 is engaged with the opening 122, and the locking ring 12 is in a loosened state.

[0050] Furthermore, such as Figure 7 As shown, the other end of the pull rod 131 forms a third limiting protrusion 137, and the opening 122 is provided with a limiting groove 138 that cooperates with the third limiting protrusion 137; a preset distance is formed between the third limiting protrusion 137 and the limiting nut 132, and the optimal locking force is achieved by adjusting this preset distance.

[0051] Another embodiment of this application provides a photographic apparatus that includes the quick-connect device described above.

[0052] The advantages of the quick-connect device and photographic equipment described above are as follows: 1. Improved operating efficiency: the locking operation rotation angle is ≤90°, and the time taken for a single action is <3 seconds; 2. Ergonomic optimization: all operations can be completed with one hand, reducing the locking force requirement; 3. Enhanced structural stability: the clamping force of the clamp is large, and the torsional torque is large; 4. Expanded compatibility: it supports the series installation of multiple devices and is compatible with 3 / 8-inch standard interfaces.

[0053] Use case 1:

[0054] The equatorial mount is directly fixed to the tripod. The base unit is fixed to the top of the equatorial mount, and the quick-release unit is fixed to the bottom of the gimbal. To quickly connect the gimbal and the equatorial mount, slide the quick-release unit into the base unit along the vertical slot, rotate the gimbal, and close the locking unit to complete the locking operation. To unlock, simply repeat the above steps in reverse.

[0055] Use case 2:

[0056] The first base unit is fixed to the top of the tripod, the second base unit is fixed to the top of the equatorial mount, the first quick-release unit is fixed to the bottom of the equatorial mount, and the second quick-release unit is fixed to the bottom of the gimbal.

[0057] When the user is not using the equatorial mount, the gimbal and tripod can be quickly connected directly through the first base unit and the second quick-release unit;

[0058] When the user needs to use the equatorial mount, quickly unlock the first base unit and the first quick-release unit, quickly connect the equatorial mount and tripod through the first base unit and the first quick-release unit, and quickly connect the equatorial mount and gimbal through the second base unit and the second quick-release unit.

[0059] Example 2

[0060] like Figures 8-11 As shown, the difference between Embodiment 2 and Embodiment 1 is that Embodiment 2 further includes an anti-loosening unit 3. The quick-release unit 2 and the base unit 1 are properly engaged, and the anti-loosening unit 3 limits the movement of the two.

[0061] Specifically, the anti-loosening unit 3 includes an elastic plunger 31 connected to the side of the quick-release base 21. The plunger end face of the elastic plunger 31 protrudes from the side of the quick-release base 21, and the plunger end face of the elastic plunger 31 is lower than the outer side of the outer connecting groove 211. It should be noted that the plunger end face of the elastic plunger 31 can descend into the plunger body under external force. After the external force is removed, the plunger end face returns to the initial position. The structure of the elastic plunger 31 is existing technology and will not be described in detail here. There are three elastic plungers 31, which are spaced apart and located on the side of the corresponding outer connecting groove 211. This arrangement ensures that at least one elastic plunger 31 can play its corresponding role no matter from which position the operator mates the quick-release unit 2 with the base unit 1.

[0062] The anti-loosening unit 3 also includes a pin mounting through hole 35 provided on the locking ring 12. The plunger end of the elastic plunger 31 cooperates with the pin mounting through hole 35 to achieve a locking effect. The inner end face of the pin mounting through hole 35 forms a guide slope 36, which facilitates the plunger end of the elastic plunger 31 to enter or leave the pin mounting through hole 35.

[0063] An unlocking pin 33 is movably inserted through the pin mounting through hole 35. The unlocking pin 33 is inserted through the pin mounting through hole 35 without external force. The inner end face of the unlocking pin 33 is a beveled end face 34, which cooperates with the plunger end face of the corresponding elastic plunger 31. The outer end face of the unlocking pin 33 extends to the outside of the locking ring 12, which facilitates pressing the unlocking pin 33. When the outer end of the unlocking pin 33 is pressed by external force, the inner end face of the unlocking pin 33 presses down on the plunger end face of the corresponding elastic plunger 31, causing the plunger end of the corresponding elastic plunger 31 to leave the pin mounting through hole 35. At this time, rotating the quick-release base 21 can release the anti-disengagement restriction.

[0064] Furthermore, the quick-install base 21 has a side mounting hole 32 on its side, which is used to install the elastic plunger 31.

[0065] Furthermore, in this embodiment, to prevent the unlocking pin 33 from falling out of the pin mounting through hole 35 due to its own weight, a travel limiting groove 331 is provided on the side of the unlocking pin 33, and a pin limiting hole 37 is provided on the locking ring 12. The center line of the pin limiting hole 37 is perpendicular to the center line of the pin mounting through hole 35. The pin limiting hole 37 is connected to the pin mounting through hole 35. A limiting pin 38 is connected to the pin limiting hole 37, and part of the limiting pin 38 cooperates with the travel limiting groove 331, thereby limiting the unlocking pin 33.

[0066] In this embodiment, after the quick-release unit 2 is installed into the base unit 1, the quick-release unit 2 is rotated counterclockwise so that the plunger end of the elastic plunger 31 engages with the pin mounting through hole 35 to achieve a locking effect; when releasing the anti-disengagement mechanism, the unlocking pin 33 is pressed, and then the quick-release unit 2 is rotated clockwise so that the plunger end of the elastic plunger 31 disengages from the pin mounting through hole 35 to achieve release.

[0067] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0068] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0069] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0070] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0071] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0072] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" 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 a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0073] The above description is only a preferred embodiment of the present utility model. All equivalent changes and modifications made within the scope of the patent application of the present utility model shall be covered by the present utility model.

Claims

1. A quick-connect device, characterized in that, It includes: A base unit and a quick-installation unit, wherein the quick-installation unit is detachably connected to the base unit; The base unit includes a base and a locking ring, the locking ring cooperating with the base; The locking ring has a receiving space and an opening, and the opening is connected to the receiving space; the receiving space is used to accommodate the quick-assembly unit. A locking unit is movably connected to the opening. After the locking ring cooperates with the base, the base and the receiving space form an installation chamber. After the quick-installation unit is placed into the installation chamber, the quick-installation unit is relatively fixed to the base under the action of the locking ring.

2. The quick connection device as described in claim 1, characterized in that, The quick-installation unit includes a quick-installation base, which is adapted to the installation chamber formed by the base and the accommodating space.

3. The quick connection device as described in claim 2, characterized in that, The inner wall of the locking ring is provided with at least two inner connecting grooves at intervals; a snap-fit ​​position is formed between two adjacent inner connecting grooves; the outer side of the quick-release base is provided with an outer connecting groove that mates with the corresponding inner connecting groove.

4. The quick connection device as described in claim 1, characterized in that, The base includes a base body, one end of which has a first connecting protrusion extending outward, and the bottom of the locking ring has a first mating protrusion extending into the receiving space. When the locking ring mates with the base, the first mating protrusion mates with the first connecting protrusion, and the first connecting protrusion is located within the receiving space.

5. The quick connection device as described in claim 4, characterized in that, The base body is provided with a second limiting protrusion, which is located below the first connecting protrusion. A mating space is formed between the second limiting protrusion and the first connecting protrusion, and the first mating protrusion mates with the mating space.

6. The quick connection device as described in claim 4, characterized in that, The base body has a first positioning element on its side, and the locking ring has a first mating groove that mates with the first positioning element.

7. The quick connection device as described in claim 1, characterized in that, The locking unit includes a pull rod, which is movably inserted through the mounting through holes on both sides of the opening of the locking ring. One end of the pull rod is threaded with a limit nut; the other end of the pull rod is movably connected to a locking handle via a connecting pin; the other end of the pull rod forms a third limiting protrusion, and the opening is provided with a limiting groove that cooperates with the third limiting protrusion.

8. The quick connection device as described in claim 2, characterized in that, It also includes an anti-loosening unit, which includes an elastic plunger connected to the side of the quick-release base and a pin mounting through hole provided on the locking ring. The plunger end of the elastic plunger engages with the pin mounting through hole. The inner end face of the pin mounting through hole forms a guide slope. An unlocking pin is movably inserted through the pin mounting hole; the inner end face of the unlocking pin mates with the plunger end face of the corresponding elastic plunger, and the outer end face of the unlocking pin extends to the outside of the locking ring.

9. The quick connection device as described in claim 8, characterized in that, The unlocking pin has a travel limit groove on its side, and the locking ring has a pin limit hole that is connected to the pin mounting through hole. A limit pin is connected to the pin limit hole, and part of the limit pin cooperates with the travel limit groove.

10. A photographic device, characterized in that, It includes the quick-connect device as described in any one of claims 1-9.

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