Bayonet structure and light device

Abstract

The application provides a bayonet structure and a light device. The bayonet structure comprises: a support module arranged on a first surface of a device body; a pressing plate module threadedly connected with the support module; a device accessory is fixed on the support module by the pressing plate module; a limiting module is arranged between the pressing plate module and the device body; the limiting module is configured to prevent the pressing plate module from continuing to loosen when the pressing plate module loosens to a preset position, the preset position is between a first stroke limit and a second stroke limit, and the pressing plate module remains in a threadedly screwed state with the support module at the preset position; the first stroke limit is a stroke limit of the pressing plate module being screwed to a position of pressing the device accessory; and the second stroke limit is a stroke limit of the pressing plate module being loosened to a position of being completely threadedly separated from the support module. The technical scheme of the application can effectively prevent the pressing plate module from being completely loosened and causing the device accessory to fall off.

Description

Technical Field

[0001] This application belongs to the field of photographic lighting technology, and more specifically, relates to a bayonet structure and lighting equipment. Background Technology

[0002] In the photography industry, some lighting products on the market currently use a threaded snap-fit ​​structure to clamp and fix lighting accessories, such as standard covers, to the main body of the lamp. This snap-fit ​​structure generally consists of a support part and a pressure plate part with snap-fit. The support part is fixed to the main body of the lamp. When the buckle on the lighting accessory is placed between the pressure plate part and the support part through the snap-fit, the change in the thread stroke between the pressure plate part and the support part (i.e., tightening) causes the pressure plate part to press the buckle on the lighting accessory, thereby pressing and fixing the accessory to the support part, thus achieving a tight connection between the lighting accessory and the main body of the lamp. However, in practical applications, it has been found that lighting technicians generally do not immediately remove the equipment accessories from the main body of the lighting fixture after use. As the main body of the lighting fixture and the equipment accessories are continuously moved, used, and dropped over a long period of time, the threaded connection of the bayonet structure is prone to loosening due to accidental contact or other reasons. This causes a gap to appear between the pressure plate and the snap-fit ​​surface of the equipment accessory. If the threaded connection is not tightened in time, over time, the pressure plate may be completely loosened, causing the equipment accessory to detach from the pressure plate and fall off, thus creating a serious safety hazard. Utility Model Content

[0003] This application provides a bayonet structure and a lighting device, aiming to improve the existing lighting devices that use a bayonet structure with built-in threads to fix equipment accessories such as standard covers, which are prone to the problem of accessories detaching from the pressure plate and falling off.

[0004] In a first aspect, embodiments of this application provide a bayonet structure for connecting and fixing the device body and device accessories, the bayonet structure comprising:

[0005] A support module is disposed on the first surface of the main body of the device;

[0006] The pressure plate module is screwed to the support module via threads, and the equipment accessories are pressed and fixed onto the support module by the pressure plate module;

[0007] A limiting module is disposed between the pressure plate module and the main body of the equipment. The limiting module is configured to prevent the pressure plate module from continuing to loosen when the pressure plate module is loosened to a preset position.

[0008] The preset position is located between the first travel limit and the second travel limit, and at the preset position, the pressure plate module is kept in a state of being threadedly engaged with the support module. The first travel limit is the travel limit of the pressure plate module when it is tightened to the position of pressing the equipment accessory, and the second travel limit is the travel limit of the pressure plate module when it is loosened to the position of being completely disengaged from the thread of the support module.

[0009] Optionally, in some embodiments of this application, the limiting module includes an elastic telescopic component and a limiting groove;

[0010] One of the elastic telescopic component and the limiting groove is disposed on the pressure plate module, and the other of the elastic telescopic component and the limiting groove is disposed on the first surface;

[0011] The telescopic part of the elastic telescopic component is driven by elastic force to engage with the limiting groove, thereby preventing the pressure plate module from loosening.

[0012] Optionally, in some embodiments of this application, the pressure plate module includes a pressure plate body and a pressure plate actuating part;

[0013] The pressure plate body is screwed to the support module by threads, and the pressure plate actuating part protrudes from the periphery of the pressure plate body;

[0014] At least a portion of the elastic telescopic component is disposed in the pressure plate actuating part, and the pressure plate actuating part has an avoidance hole on the side facing the main body of the device to avoid the telescopic movement of the telescopic part of the elastic telescopic component.

[0015] Optionally, in some embodiments of this application, the elastic telescopic component includes a spring pin, a spring pin spring, a button, and a button spring;

[0016] At least a portion of the button is elastically mounted in the pressure plate toggle part by the button spring, and the button can move in a first direction parallel to the first surface when pressed by an external force;

[0017] The spring pin is elastically mounted in the pressure plate actuation part by the spring pin spring, and is set to abut against the button by the inclined surface. The end of the spring pin protrudes from the relief hole. When the button is subjected to force and moves in the first direction, the inclined surface of the button pushes the spring pin to retract in the second direction perpendicular to the first surface and disengage from the limiting groove.

[0018] Optionally, in some embodiments of this application, the limiting groove is disposed on the first surface, and the limiting groove extends along the loosening direction of the pressure plate module;

[0019] The depth of the limiting groove gradually increases from the detachment direction of the pressure plate module, so that the bottom of the limiting groove is an inclined surface.

[0020] Optionally, in some embodiments of this application, the limiting module includes a movable component and a limiting groove;

[0021] One of the movable component and the limiting groove is disposed on the pressure plate module, and the other of the movable component and the limiting groove is disposed on the first surface;

[0022] The movable part of the active component is actively driven by the power part to engage with the limiting groove, thereby preventing the pressure plate module from loosening.

[0023] Optionally, in some embodiments of this application, in the loosening direction of the pressure plate module, the stroke interval between the first stroke limit and the second stroke limit is set as the first stroke interval, and the stroke interval between the preset position and the second stroke limit is set as the second stroke interval;

[0024] The second travel interval is greater than or equal to 0.3 times the first travel interval.

[0025] Optionally, in some embodiments of this application, the support module includes a support block and a central ring;

[0026] The support block is detachably mounted on the first surface;

[0027] The middle ring is detachably mounted on the second surface of the support block, and the circumference of the middle ring is screwed to the pressure plate module by threads.

[0028] Optionally, in some embodiments of this application, the bayonet structure further includes a first limiting member and a second limiting member;

[0029] When the pressure plate module is tightened, the first limiting member will ultimately limit the pressure plate module to the first stroke limit.

[0030] When the pressure plate module is released, the second limiting member ultimately limits the pressure plate module to the second stroke limit.

[0031] Secondly, embodiments of this application provide a lighting device, including a device body and at least one device accessory. One side surface of the device body is provided with a bayonet structure as described above for fixing the device accessory.

[0032] The bayonet structure and lighting equipment provided in this application embodiment, wherein the lighting equipment uses a bayonet structure for fixing equipment accessories, adds a limiting module between the original support module and pressure plate module, which are screwed together, and the side surface of the equipment body where the support module is located. This limiting module prevents the pressure plate module from further loosening when it has loosened to a preset position. Even after long-term use, if the pressure plate module becomes slightly loose due to accidental contact, the limiting module prevents it from loosening further to the second stroke limit position, thus avoiding complete loosening due to accidental contact. Therefore, even if the lighting technician does not remove the equipment accessories from the equipment body after using the lighting equipment, the accessories will not fall off due to the loosening or falling of the pressure plate module after long-term use, preventing serious safety hazards. It is evident that the technical solution of this application can effectively prevent the pressure plate module from completely loosening, which could lead to the detachment of equipment accessories. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a schematic diagram of the bayonet structure in use as provided in the embodiments of this application;

[0035] Figure 2 for Figure 1 The diagram shows the disassembled structure of the bayonet.

[0036] Figure 3 for Figure 1 The diagram shows the upper cover of the bayonet structure without the pressure plate actuating part.

[0037] Figure 4 for Figure 1 A schematic diagram showing the disassembled structure of the pressure plate actuating part and the elastic telescopic component of the bayonet structure shown.

[0038] Figure 5 for Figure 3 A magnified schematic diagram of part I of the bayonet structure shown.

[0039] The following are the labeling elements in the figure:

[0040] 10. Bayonet structure; 11. Support module; 111. Support block; 1111. Second surface; 112. Middle ring; 12. Pressure plate module; 121. Pressure plate body; 1211. Circular bayonet; 1212. Clearance notch; 122. Pressure plate actuating part; 1221. Clearance hole; 1222. Upper cover; 1223. Lower cover; 13. Limiting module; 131. Elastic telescopic component; 1311. Spring pin; 1312. Spring pin spring; 1313. Button; 1314. Button spring; 132. Limiting groove; 141. First limiting component; 142. Second limiting component; 20. Equipment body; 21. First surface. Detailed Implementation

[0041] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0042] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0043] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and 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. Therefore, they should not be construed as limitations on this application.

[0044] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0045] Furthermore, the accompanying drawings are not drawn to a 1:1 scale, and the relative dimensions of the components are shown in the drawings only as examples and not necessarily to actual scale.

[0046] In the photography industry, some lighting products on the market currently use a threaded snap-fit ​​structure to clamp and fix lighting accessories, such as standard covers, to the main body of the lamp. This snap-fit ​​structure generally consists of a support part and a pressure plate part with snap-fit. The support part is fixed to the main body of the lamp. When the buckle on the lighting accessory is placed between the pressure plate part and the support part through the snap-fit, the change in the thread stroke between the pressure plate part and the support part (i.e., tightening) causes the pressure plate part to press the buckle on the lighting accessory, thereby pressing and fixing the accessory to the support part, thus achieving a tight connection between the lighting accessory and the main body of the lamp. However, in practical applications, it has been found that lighting technicians generally do not immediately remove the equipment accessories from the main body of the lighting fixture after use. As the main body of the lighting fixture and the equipment accessories are continuously moved, used, and dropped over a long period of time, the threaded connection of the bayonet structure is prone to loosening due to accidental contact or other reasons. This causes a gap to appear between the pressure plate and the snap-fit ​​surface of the equipment accessory. If the threaded connection is not tightened in time, over time, the pressure plate may be completely loosened, causing the equipment accessory to detach from the pressure plate and fall off, thus creating a serious safety hazard.

[0047] Therefore, it is necessary to provide a bayonet structure and lighting device to improve the existing lighting device, which uses a bayonet structure with built-in threads to fix equipment accessories such as standard covers, which is prone to the problem of accessories detaching from the pressure plate and falling off.

[0048] Please see Figures 1 to 5 The bayonet structure 10 provided in this application embodiment will now be described. The bayonet structure 10 mainly includes a support module 11, a pressure plate module 12, and a limiting module 13. The support module 11 is mainly disposed on the first surface 21 of the equipment body 20. The pressure plate module 12 is mainly screwed to the support module 11, and equipment accessories (not shown) are pressed and fixed to the support module 11 by the pressure plate module 12. The limiting module 13 is mainly disposed between the pressure plate module 12 and the equipment body 20, and is configured to prevent the pressure plate module 12 from further loosening when it is loosened to a preset position. The preset position is located between the first stroke limit and the second stroke limit. At this preset position, the pressure plate module 12 is kept in a threaded state with the support module 11. The first stroke limit is the stroke limit when the pressure plate module 12 is tightened to the position of the pressing equipment accessory. The second stroke limit is the stroke limit when the pressure plate module 12 is loosened to the position where it is completely disengaged from the thread of the support module 11 (i.e., the pressure plate module 12 is completely loosened).

[0049] It should be noted that the bayonet structure 10 in this embodiment is mainly used to connect and fix the device body 20 and the device accessories. Here, the device body 20 and the device accessories generally refer to lighting equipment in the shooting or photography industry. These lighting equipment use the bayonet structure 10 with its own threads to connect and fix the device body 20 and the device accessories such as standard covers.

[0050] The aforementioned support module 11 is disposed on the first surface 21 of the equipment body 20. Specifically, the support module 11 can be detachably and fastened to the first surface 21 of the equipment body 20, or the support module 11 and the first surface 21 of the equipment body 20 can be an integral structure.

[0051] The aforementioned limiting module 13 is disposed between the pressure plate module 12 and the equipment body 20. Specifically, one part of the limiting module 13 is disposed on the pressure plate module 12, and the other part is disposed on the equipment body 20. The movable limiting mechanism between the two parts achieves corresponding activity restriction, meaning that the limiting mechanism between the two parts can freely switch between a limited state and a released state. Thus, when the pressure plate module 12 is released to a preset position, the limiting mechanism between the two parts prevents the pressure plate module 12 from further releasing, avoiding complete release due to accidental contact or other reasons. When necessary, the limiting mechanism between the two parts can be switched to the released state, allowing the pressure plate module 12 to continue releasing until it reaches the second stroke limit, thus completing the release operation of the pressure plate module 12.

[0052] Generally speaking, when the pressure plate module 12 performs a tightening motion (i.e., along...) Figure 1 When the pressure plate module 12 moves clockwise as shown in the diagram, if it reaches the first travel limit, it is in a fully tightened state (i.e., in the position of the clamping device accessory). When the pressure plate module 12 loosens (i.e., along...), it is in a fully tightened state (i.e., in the position of the clamping device accessory). Figure 1 When the pressure plate module 12 moves counterclockwise as shown in the diagram, if it moves to the second stroke limit, the pressure plate module 12 is in a completely detached state (i.e., it is in a position where it is completely disengaged from the thread of the support module 11). At this time, the pressure plate module 12 can be separated from the support module 11, or the corresponding equipment accessories can be picked up or put away.

[0053] In this way, the bayonet structure 10 provided in this embodiment, based on the original screw-tight connection between the support module 11 and the pressure plate module 12, adds a limiting module 13 between the pressure plate module 12 and the side surface of the equipment body 20 where the support module 11 is located. This limiting module 13 prevents the pressure plate module 12 from further loosening when it has loosened to a preset position. Even after long-term use, if the pressure plate module 12 becomes slightly loose due to accidental contact, the limiting module 13 can prevent it from loosening further to the second stroke limit position of complete loosening, thus avoiding the problem of complete loosening of the pressure plate module 12 due to accidental contact. Therefore, even if the lighting technician does not remove the equipment accessories from the equipment body 20 after using the lighting equipment, the equipment accessories will not fall off due to the loosening or falling of the pressure plate module 12 after long-term use, thus preventing serious safety hazards.

[0054] In some examples, such as Figures 1 to 4 As shown, the limiting module 13 includes an elastic telescopic component 131 and a limiting groove 132. One of the elastic telescopic component 131 and the limiting groove 132 is disposed on the pressure plate module 12, and the other of the elastic telescopic component 131 and the limiting groove 132 is disposed on the first surface 21. The telescopic portion of the elastic telescopic component 131 is driven by an elastic force to engage with the limiting groove 132, thereby preventing the pressure plate module 12 from loosening.

[0055] Thus, with the above structural arrangement, when the pressure plate module 12 is released to the preset position, the telescopic part of the elastic telescopic component 131 is driven by elastic force to engage with the limiting groove 132. The limiting engagement between the telescopic part and the limiting groove 132 restricts the release of the pressure plate module 12. When needed, external force can be used to make the telescopic part of the elastic telescopic component 131 exit the limiting groove 132, thereby releasing the limiting engagement between the telescopic part and the limiting groove 132, so that the pressure plate module 12 can complete the corresponding release operation normally.

[0056] It should be noted that in this example, one of the elastic telescopic component 131 and the limiting groove 132 is disposed on the pressure plate module 12, and the other of the elastic telescopic component 131 and the limiting groove 132 is disposed on the first surface 21. Specifically, when the elastic telescopic component 131 is disposed on the pressure plate module 12, the limiting groove 132 is disposed on the first surface 21, and when the limiting groove 132 is disposed on the pressure plate module 12, the elastic telescopic component 131 is disposed on the first surface 21. Both can effectively perform the corresponding activity restriction.

[0057] In some examples, such as Figures 1 to 4As shown, the pressure plate module 12 includes a pressure plate body 121 and a pressure plate actuating part 122. The pressure plate body 121 is screwed to the support module 11 via threads, and the pressure plate actuating part 122 protrudes from the periphery of the pressure plate body 121. An elastic telescopic component 131 is disposed in the pressure plate actuating part 122, and the side of the pressure plate actuating part 122 facing the equipment body 20 has a clearance hole 1221 to avoid the telescopic movement of the telescopic part of the elastic telescopic component 131.

[0058] Thus, through the above structural arrangement, the elastic telescopic component 131 is well positioned on the pressure plate module 12, and the limiting groove 132 is positioned on the first surface 21. Simultaneously, the pressure plate actuating part 122 facilitates the corresponding tightening movement of the pressure plate body 121 via a toggling motion (i.e.,...). Figure 1 The clockwise rotation shown) or loosening motion (i.e. Figure 1 (The counterclockwise rotation shown). In addition, the elastic telescopic component 131 is provided in the pressure plate actuation part 122, and its service life can be extended by the enclosure formed by the pressure plate actuation part 122.

[0059] It should be noted that the pressure plate body 121 in this example can preferably be adopted. Figure 1 The disc structure shown facilitates a screw-on connection between the disc and the support module 11, specifically, the inner circumference of the pressure plate body 121 is screwed onto the outer circumference of the support module 11. Furthermore, to facilitate the insertion of accessory clips into the equipment attachment when the pressure plate module 12 is in its second stroke limit position, three clearance notches 1212 are provided around the circular notch 1211 of the pressure plate body 121 to correspond to the three accessory clips of the equipment attachment. Thus, once the three accessory clips are positioned through the corresponding clearance notches 1212, the screwing motion of the pressure plate body 121 presses the three accessory clips evenly between the support module and the pressure plate body 121, achieving a fixed connection between the equipment attachment and the equipment body 20.

[0060] In some examples, such as Figure 2 , Figure 4 and Figure 5 As shown, the elastic telescopic assembly 131 includes a spring pin 1311, a spring pin spring 1312, a button 1313, and a button spring 1314. At least a portion of the button 1313 is elastically mounted in the pressure plate actuating portion 122 via the button spring 1314. When pressed by an external force, the button 1313 can move along a first direction parallel to the first surface 21 (i.e., Figure 3The spring pin 1311 moves in the direction indicated by the middle arrow X. The spring pin 1311 is elastically mounted in the pressure plate actuating part 122 via the spring pin spring 1312, and abuts against the button 1313 via an inclined surface. The end of the spring pin 1311 protrudes from the clearance hole 1221. When the button 1313 is subjected to force and moves in the first direction, the inclined surface of the button 1313 pushes the spring pin 1311 in a second direction perpendicular to the first surface 21 (i.e.,...). Figure 3 (In the direction indicated by the middle arrow Y) it retracts and disengages from the limiting groove 132.

[0061] Thus, with the above structural configuration, when it is necessary to release the limiting engagement between the telescopic part (i.e., the spring pin 1311) and the limiting groove 132, it is only necessary to press the button 1313 with external force to drive the button 1313 to move along the first direction. At this time, not only is the button spring 1314 compressed and elastically deformed, giving it an elastic force that forces the button 1313 to reset, but the inclined surface also compresses the spring pin 1311, causing the spring pin 1311 to move away from the limiting groove 132 along the second direction, thereby releasing the limiting engagement between the two. At the same time, the spring pin spring 1312 is also compressed and elastically deformed, giving it an elastic force that forces the spring pin 1311 to reset. In this way, when it is necessary to restore the limiting engagement state between the telescopic part (i.e., the spring pin 1311) and the limiting groove 132, simply release the button 1313. At the same time, the button 1313 resets under the elastic force of the button spring 1314, and the spring pin 1311 resets under the elastic force of the spring pin spring 1312, that is, it re-engages into the limiting groove 132 to restore the limiting engagement state between the telescopic part and the limiting groove 132.

[0062] It should be noted that the button 1313 in this example may specifically include a pressing part and a driving part. Specifically, the assembly method of the button 1313 in the pressure plate actuating part 122 may be as follows: the driving part is elastically assembled into the pressure plate actuating part 122 via a button spring 1314, and the pressing part is exposed on the surface of the pressure plate actuating part 122. Thus, when the pressing part is pressed by an external force, the driving part can be driven to move in the first direction. The spring needle 1311 in this example may specifically include a needle body part and an assembly part. Specifically, the assembly method of the spring needle 1311 in the pressure plate actuating part 122 may be as follows: the assembly part is elastically assembled into the pressure plate actuating part 122 via a spring needle spring 1312, and abuts against the driving part of the button 1313 through a beveled engagement. Thus, when the driving part of the button 1313 moves in the first direction, the assembly part can be driven by the beveled pressure of the driving part to move the needle body away from the limiting groove 132 in the second direction. To facilitate better assembly of the elastic telescopic component 131 into the pressure plate actuating part 122, the pressure plate actuating part 122 mainly adopts a separable structure, namely, it includes a separable upper cover 1222 and a lower cover 1223, which together form a mounting cavity for assembling the elastic telescopic component 131. Furthermore, the surface of the lower cover 1223 has multiple protrusions extending in different directions to accommodate the mounting environment of the various components forming the elastic telescopic component 131. In this case, the aforementioned needle portion is preferably along the second direction (i.e.,... Figure 3 The assembly part extends in the direction indicated by the arrow Y to facilitate the corresponding telescopic movement of the needle body along its extension direction. The aforementioned assembly part has a recessed groove at its end away from the needle body in the second direction to better accommodate one end of the assembly spring 1312, while the other end of the button spring 1314 abuts against the upper cover 1222, so that the assembly part is elastically assembled into the pressure plate actuating part 122 via the spring spring 1312. The aforementioned driving part is a rectangular structure with a notch on one side. One side wall of the driving part, opposite to the notch, has one surface connected to the pressing part, and the other surface elastically abuts against a protrusion on the lower cover 1223 via the button spring 1314, so that the driving part is elastically assembled into the pressure plate actuating part 122 via the button spring 1314. Furthermore, the aforementioned assembly part preferably adopts a T-shaped structure to facilitate better abutment connection between the assembly part and the driving part through a beveled fit.

[0063] In some examples, such as Figure 1 , Figure 2 and Figure 5 As shown, a limiting groove 132 is disposed on the first surface 21, and the limiting groove 132 extends along the loosening direction of the pressure plate module 12. The groove depth of the limiting groove 132 gradually increases from the loosening direction of the pressure plate module 12, so that the bottom of the limiting groove 132 is an inclined surface.

[0064] Thus, through the above structural arrangement, the limiting groove 132 can form a corresponding limiting engagement with the elastic telescopic component 131 only in the loosening direction of the pressure plate module 12. When the pressure plate module 12 is tightened, the elastic telescopic component 131 can gradually disengage from the limiting groove 132 under the guidance of the inclined structure, so that it will not restrict the tightening movement of the pressure plate module 12.

[0065] It should be noted that the loosening direction of the pressure plate module 12 in this example is specifically the direction in which the pressure plate module 12 moves loosely, that is, along the circumference of the pressure plate module 12, from the first stroke limit to the second stroke limit. Figure 1 The direction of counterclockwise movement is shown in the example. The limiting groove 132 in this example is preferably... Figure 2 The arc-shaped groove structure shown, and the limiting groove 132 sequentially includes a first end (i.e., ...) in the direction of the loosening movement along the pressure plate module 12. Figure 2 The right end shown) and the second end (i.e. Figure 2 As shown in the left end), at this time, the groove depth of the limiting groove 132 in this example gradually increases from the loosening direction of the pressure plate module 12. Specifically, the groove depth of the limiting groove 132 is almost zero at the first end, and gradually increases along the loosening direction of the pressure plate module 12 until it has the maximum groove depth of the entire limiting groove 132 at the second end.

[0066] In some examples, the limiting module 13 may also include a movable component and a limiting groove 132. One of the movable component and the limiting groove 132 is disposed on the pressure plate module 12, and the other of the movable component and the limiting groove 132 is disposed on the first surface 21. The movable portion of the movable component is actively driven by the power component to engage with the limiting groove 132 to prevent the pressure plate module 12 from becoming detached.

[0067] Thus, with the above structural configuration, when the pressure plate module 12 is released to the preset position, the movable part of the movable component can be actively driven by the power part to engage in the limiting groove 132. The limiting engagement between the movable part and the limiting groove 132 restricts the release of the pressure plate module 12. When needed, the movable part of the movable component can be actively driven by the power part to exit the limiting groove 132, thereby releasing the limiting engagement between the movable part and the limiting groove 132, so that the pressure plate module 12 can complete the corresponding release operation normally.

[0068] It should be noted that the movable component in this example differs from the elastic telescopic component 131 in the previous example in that the elastic telescopic component 131 only requires user operation (such as pressing the button 1313) when the telescopic part is disengaged from the limiting groove 132. In contrast, the movable component in this example requires user operation (i.e., active drive from the power unit to move the movable part away from or into the limiting groove 132) regardless of whether the movable part is engaged or disengaged from the limiting groove 132. The movable component in this example generally includes a movable rod and a power structure. Driven by the power structure, the movable rod can move back and forth along a second direction (i.e., perpendicular to the side surface of the pressure plate actuating part 122 facing the device body 20) to move away from or into the limiting groove 132. The aforementioned power structure can be a gear-driven power structure or a screw-driven power structure, driving the movable rod to move back and forth under the drive of a motor or the twisting of a knob.

[0069] In some examples, such as Figure 1 and Figure 2 As shown, in the loosening direction of the pressure plate module 12, the stroke interval between the first stroke limit and the second stroke limit is set as the first stroke interval, and the stroke interval between the preset position and the second stroke limit is set as the second stroke interval. The second stroke interval is greater than or equal to 0.3 times the first stroke interval.

[0070] Thus, by setting the above parameters, it can be ensured that the preset position is at a sufficient distance from the second stroke limit, so that the pressure plate module 12 can be loosened to the preset position after being tightened. When the movement is restricted by the limit module 13, the current loosening degree of the pressure plate module 12 will not cause it to easily separate from the support module 11. That is, at this time, the pressure plate module 12 can still be kept in the state of being threadedly engaged with the support module 11, so as to ensure the anti-loosening effect of the limit module 13.

[0071] It should be noted that, in this example, the first stroke interval specifically refers to the stroke traveled by the pressure plate module 12 from the first stroke limit to the second stroke limit during its release movement. The second stroke interval specifically refers to the stroke traveled by the pressure plate module 12 from the preset position to the second stroke limit during its continued release movement.

[0072] In some examples, such as Figure 1 and Figure 2 As shown, the support module 11 includes a support block 111 and a middle ring 112. The support block 111 is detachably mounted on the first surface 21. The middle ring 112 is detachably mounted on the second surface 1111 of the support block 111, and the periphery of the middle ring 112 is screwed to the pressure plate module 12 via threads.

[0073] Thus, through the above structural arrangement, a separable structure can be formed between the support block 111 and the middle ring 112, so that the easily damaged middle ring 112 can be replaced separately when needed, thereby reducing its replacement and maintenance costs.

[0074] It should be noted that the detachable design mentioned in this example can be achieved through common detachable connection structures such as screw structures and snap-fit ​​structures.

[0075] In some examples, such as Figure 1 and Figure 2 As shown, the bayonet structure 10 also includes a first limiting member 141 and a second limiting member 142. When the pressure plate module 12 is tightened, the first limiting member 141 ultimately limits the pressure plate module 12 to the first stroke limit. When the pressure plate module 12 is released, the second limiting member 142 ultimately limits the pressure plate module 12 to the second stroke limit.

[0076] Thus, through the above structural settings, the stroke limits of the tightening and loosening movements of the pressure plate module 12 can be achieved respectively. At the same time, the position positioning of the second limiting member 142 can also achieve accurate alignment of the assembly device of the pressure plate module 12. Furthermore, the position limiting of the first limiting member 141 can prevent damage caused by the pressure plate module 12 continuing to tighten after it has been tightened.

[0077] It should be noted that, in this example, the first limiting member 141 and the second limiting member 142 can specifically be cylindrical structures, preferably disposed on the first surface 21 or Figure 3 On the support module 11 shown (which can further be the second surface 1111 of the support block 111), the pressure plate actuating part 122 mentioned above can be used for corresponding stroke limiting. That is, when the pressure plate module 12 performs a tightening movement until the pressure plate actuating part 122 abuts against the first limiting member 141, the first limiting member 141 can ultimately limit the pressure plate module 12 to the first stroke limit. When the pressure plate module 12 performs a loosening movement until the pressure plate actuating part 122 abuts against the second limiting member 142, the second limiting member 142 can ultimately limit the pressure plate module 12 to the second stroke limit. In addition, when the first limiting member 141 and the second limiting member 142 in this example are specifically provided on the first surface 21, and the limiting groove 132 mentioned above is also provided on the first surface 21, the limiting groove 132 should be located between the first limiting member 141 and the second limiting member 142 in the loosening direction of the pressure plate module 12.

[0078] In one embodiment, this application provides a lighting device including a device body 20 and at least one device accessory. One side surface of the device body 20 is provided with a bayonet structure 10 as described above for fixing the device accessory. In this way, when the lighting technician finishes using the lighting device, even if the device accessory is not removed from the device body 20, the device accessory will not fall off due to the loosening or falling of the pressure plate module 12 after long-term use, thus avoiding serious safety hazards.

[0079] It should be noted that the lighting equipment in this application embodiment can specifically be a studio flash, LED film and television light, spotlight / floodlight, and portable fill light, etc. When it is specifically a studio flash, it can be used with accessories such as a standard diffuser, softbox, and honeycomb grid. When it is specifically an LED film and television light, it can be used with accessories such as a softbox, snoot, and radome. When it is specifically a spotlight / floodlight, it can be used with accessories such as a four-blade baffle and color filter. When it is specifically a portable fill light, it can be used with accessories such as a softbox and grid.

[0080] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A bayonet structure (10) for connecting and fixing the equipment body (20) and equipment accessories, characterized in that, The bayonet structure (10) includes: A support module (11) is disposed on the first surface (21) of the main body (20) of the device; The pressure plate module (12) is screwed to the support module (11) by threads, and the equipment accessory is pressed and fixed on the support module (11) by the pressure plate module (12); A limiting module (13) is disposed between the pressure plate module (12) and the equipment body (20). The limiting module (13) is configured to prevent the pressure plate module (12) from continuing to loosen when the pressure plate module (12) is loosened to a preset position. The preset position is located between the first stroke limit and the second stroke limit. At the preset position, the pressure plate module (12) is kept in a state of being threadedly engaged with the support module (11). The first stroke limit is the stroke limit when the pressure plate module (12) is tightened to the position of pressing the equipment accessory. The second stroke limit is the stroke limit when the pressure plate module (12) is loosened to the position of being completely disengaged from the thread of the support module (11).

2. The bayonet structure (10) as described in claim 1, characterized in that, The limiting module (13) includes an elastic telescopic component (131) and a limiting groove (132); One of the elastic telescopic component (131) and the limiting groove (132) is disposed on the pressure plate module (12), and the other of the elastic telescopic component (131) and the limiting groove (132) is disposed on the first surface (21); The telescopic portion of the elastic telescopic component (131) is driven by elastic force to engage with the limiting groove (132) to prevent the pressure plate module (12) from loosening.

3. The bayonet structure (10) as described in claim 2, characterized in that, The pressure plate module (12) includes a pressure plate body (121) and a pressure plate actuating part (122); The pressure plate body (121) is screwed to the support module (11) by threads, and the pressure plate actuating part (122) protrudes from the periphery of the pressure plate body (121); At least a portion of the elastic telescopic component (131) is disposed in the pressure plate actuating part (122), and the pressure plate actuating part (122) facing the main body of the equipment (20) has an avoidance hole (1221) for avoiding the telescopic movement of the telescopic part of the elastic telescopic component (131).

4. The bayonet structure (10) as described in claim 3, characterized in that, The elastic telescopic component (131) includes a spring pin (1311), a spring pin spring (1312), a button (1313), and a button spring (1314); At least a portion of the button (1313) is elastically mounted in the pressure plate toggle part (122) by the button spring (1314), and the button (1313) can move in a first direction parallel to the first surface (21) when pressed by an external force; The spring pin (1311) is elastically mounted in the pressure plate actuating part (122) by the spring pin spring (1312), and abuts against the button (1313) by the inclined surface. The end of the spring pin (1311) protrudes from the relief hole (1221). When the button (1313) is subjected to force and moves in the first direction, the inclined surface of the button (1313) pushes the spring pin (1311) to retract in the second direction perpendicular to the first surface (21) and disengage from the limiting groove (132).

5. The bayonet structure (10) as described in claim 2, characterized in that, The limiting groove (132) is disposed on the first surface, and the limiting groove (132) extends along the loosening direction of the pressure plate module (12); The depth of the limiting groove (132) gradually increases from the loosening direction of the pressure plate module (12) so that the bottom of the limiting groove (132) is an inclined surface.

6. The bayonet structure (10) as described in claim 1, characterized in that, The limiting module (13) includes a movable component and a limiting groove (132); One of the movable component and the limiting groove (132) is disposed on the pressure plate module (12), and the other of the movable component and the limiting groove (132) is disposed on the first surface (21); The active part of the active component is actively driven by the power part and engages in the limiting groove (132) to prevent the pressure plate module (12) from loosening.

7. The bayonet structure (10) as described in claim 1, characterized in that, In the loosening direction of the pressure plate module (12), the stroke interval between the first stroke limit and the second stroke limit is set as the first stroke interval, and the stroke interval between the preset position and the second stroke limit is set as the second stroke interval; The second travel interval is greater than or equal to 0.3 times the first travel interval.

8. The bayonet structure (10) as described in claim 1, characterized in that, The support module (11) includes a support block (111) and a central ring (112); The support block (111) is detachably mounted on the first surface (21); The middle ring (112) is detachably mounted on the second surface (1111) of the support block (111), and the periphery of the middle ring (112) is screwed to the pressure plate module (12) by threads.

9. The bayonet structure (10) as described in any one of claims 1-8, characterized in that, The bayonet structure (10) further includes a first limiting member (141) and a second limiting member (142); When the pressure plate module (12) is tightened, the first limiting member (141) ultimately limits the pressure plate module (12) to the first stroke limit. When the pressure plate module (12) is released, the second limiting member (142) ultimately limits the pressure plate module (12) to the second stroke limit.

10. A lighting device, characterized in that, The device includes a main body (20) and at least one device accessory, wherein one side surface of the main body (20) is provided with a bayonet structure (10) as described in any one of claims 1-9 for securing the device accessory.

Images