Locking structure of bayonet

Abstract

The application provides a bayonet lock fixing structure for fixing a lamp and an optical accessory with a bayonet lock, comprising a rotating part and a bayonet set on a front shell of the lamp, the bayonet is set on the circumferential side of the light outlet of the front shell of the lamp, the rotating part is screwed with the bayonet, the bayonet comprises three grooves matched with the protrusions of the bayonet lock, the height of the grooves is lower than that of the protrusions of the bayonet lock, and the rotating part comprises at least a notch part corresponding to the three grooves. The protrusions of the bayonet lock enter the grooves of the bayonet through the notch part of the rotating part, and the grooves limit the circumferential direction of the protrusions; the notch part is dislocated with the groove through the thread cooperation between the rotating part and the bayonet, and the protrusions are pressed tightly to realize the limitation of the protrusions in the vertical direction.

Description

Technical Field

[0001] This invention relates to the field of optical equipment technology, and in particular to a locking structure for a Baorong bayonet. Background Technology

[0002] The Bowen mount is a standard mechanical interface commonly used in film and television lighting equipment. It is used to install various optical accessories that adjust the beam angle, including but not limited to reflectors, diffusers, umbrella diffusers, focusing lenses, and imaging lenses. Film and television lighting equipment typically consists of two parts: the first part is the light source, i.e., the lighting fixture, which generates the light beam; the second part consists of optical accessories mounted on the fixture, used to modify the angle and direction of the beam. For example, a reflector can constrain a large-angle beam to a smaller angle, increasing the intensity at the center of the light spot; a diffuser is used to diffuse the beam, ensuring even illumination of the object. The Bowen mount is a commonly used mechanical interface for optical accessories. To ensure compatibility with optical accessories using the Bowen mount, the lighting fixture mount often uses a common bayonet structure, where the Bowen mount and a snap-fit ​​mechanism work together to secure the optical accessory to the lighting fixture.

[0003] Existing luminaire mount structures compatible with the Bronco mount are designed for simple and lightweight optical accessories and can only secure optical accessories rather loosely. Summary of the Invention

[0004] The purpose of this invention is to provide a locking structure for a Boron mount, solving the technical problem that existing lamp mount structures compatible with Boron mounts can only loosely fix optical accessories.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] This application provides a locking structure for a Bowen bayonet for securing a luminaire to an optical accessory with a Bowen bayonet. The structure includes a rotating component and a bayonet mounted on the front housing of the luminaire. The bayonet is located around the light outlet of the front housing. The rotating component is screwed to the bayonet. The bayonet includes three grooves that engage with a protrusion of the Bowen bayonet. The height of the grooves is lower than the height of the protrusion of the Bowen bayonet. The rotating component includes at least three notches corresponding to the three grooves.

[0007] Optionally, the bayonet includes an inner ring and an outer ring coaxial and parallel to the light outlet, and a connecting portion connecting the inner ring and the outer ring. The inner ring is close to the light outlet, and the outer ring is away from the light outlet. The connecting portion is perpendicularly connected to the inner end of the outer ring and the outer end of the inner ring, respectively.

[0008] Optionally, the outer ring is provided with an internal thread on the side facing the light outlet of the lamp front housing, and the groove is provided in the connecting part.

[0009] Optionally, the rotating member comprises a circular rotating body, an outer periphery of the rotating body is provided with an outer thread matched with the inner thread, and an inner periphery of the rotating member is provided with the notch part.

[0010] Optionally, the rotating member is provided with a rotating handle for rotating the rotating member.

[0011] Optionally, the rotating member is provided with two rotating handles respectively arranged on the rotating member.

[0012] Optionally, the rotating member further comprises a limiting fixed starting point and a limiting fixed ending point arranged on the front shell and located at the side of the bayonet, the rotating handle is arranged between the limiting fixed starting point and the limiting fixed ending point, so that the limiting fixed starting point and the limiting fixed ending point limit the moving distance of the rotating handle, and further limit the displacement of the rotating member in the vertical direction.

[0013] Optionally, the limiting fixed starting point is arranged corresponding to one of the grooves, and the rotating handle is arranged corresponding to one of the notch parts.

[0014] Optionally, the distance between the limiting fixed starting point and the limiting fixed ending point is set according to the displacement of the rotating member in the vertical direction to compress the protrusions of different heights.

[0015] From the above technical solution, the present application has at least the following advantages and positive effects:

[0016] The present application provides a locking structure of a retaining bayonet, which is used for locking a lamp and an optical accessory with a retaining bayonet, and comprises a rotating member and a bayonet arranged on a front shell of the lamp. The bayonet is arranged at the side of a light outlet of the front shell of the lamp, the rotating member is screwed with the bayonet, the bayonet comprises three grooves matched with protrusions of the retaining bayonet, the height of the grooves is lower than that of the protrusions of the retaining bayonet, and the rotating member comprises at least three notch parts corresponding to the grooves. The protrusions of the retaining bayonet enter the grooves of the bayonet through the notch parts of the rotating member, and the grooves limit the circumferential direction of the protrusions; the notch parts are dislocated from the grooves through the thread cooperation between the rotating member and the bayonet, and the protrusions are compressed to realize the limiting of the protrusions in the vertical direction. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a structural schematic diagram of an existing optical accessory.

[0018] Figure 2 is a structural schematic diagram of an existing lamp bayonet.

[0019] Figure 3 is a structural schematic diagram of cooperation between an existing optical accessory and a lamp bayonet.

[0020] Figure 4 is another angle structure diagram of the existing optical accessory and the lens mount cooperation.

[0021] Figure 5 is the overall structure diagram of the locking structure provided by the application.

[0022] Figure 6 is the use structure diagram of the locking structure provided by the application.

[0023] The reference signs are explained as follows:

[0024] 10, bayonet mount; 11, protrusion; 20, channel; 21, spring clip; 30, lens front shell; 31, light outlet; 32, lens mount; 321, outer ring; 322, connecting part; 323, inner ring; 324, groove; 325, internal thread; 40, rotating part; 41, external thread; 42, notch part; 43, rotating handle; 50, limit fixing starting point; 60, limit fixing ending point; 100, optical accessory; 200, lens. DETAILED DESCRIPTION

[0025] The typical embodiments embodying the features and advantages of the present application will be described in detail in the following description. It should be understood that the present application can have various changes in different embodiments, which do not deviate from the scope of the present application, and the description and drawings in essence are used as illustration, not to limit the present application.

[0026] Before the present application is described, the bayonet mount 10 will be introduced first. Figure 1 is a structure diagram of the existing bayonet mount 10, as Figure 1 shown, the bayonet mount 10 is a mechanical interface commonly used at the end of the optical accessory 100, including a ring with three protrusions 11 of metal material. As Figure 2 shown, in order to be compatible with the optical accessory 100 with the bayonet mount 10, the video and television lens 200 often uses a common lens mount 32 structure, which includes three channels 20 cooperating with the three protrusions 11 of the bayonet mount 10, and the three channels 20 are concentric circular arc grooves 324, so that the protrusions 11 of the bayonet mount 10 are respectively inserted into the slot of each channel 20, and after that, when the bayonet mount 10 is rotated, the protrusions 11 can be rotated along the channel 20 to the part of the channel 20 covered by the front shell of the video and television lens 200 and then be limited by the front shell of the video and television lens 200; as Figure 4As shown, at the same time, the spring clip 21 is arranged in the channel 20 to prevent the protrusion 11 from continuing to rotate, so as to realize the locking of the security bayonet 10, thereby clamping the optical accessory 100 on the film and television lamp 200; by pressing the plug controlling the spring clip 21 to make the spring clip 21 retract, and then reversely rotating, the optical accessory 100 can be disassembled.

[0027] The existing fixing of the optical accessory 100 through the channel 20, the spring clip 21 and the front shell can only realize the fixing of the optical accessory 100 which is light in weight and has no complex optical structure, and when the optical accessory 100 is larger, heavier and more complex, the existing solution of locking the security bayonet 10 does not have enough precision to realize correct optical alignment, and the strength of the spring clip 21 is too weak to lock the heavy optical accessory 100 containing large glass and metal parts, which causes the optical accessory 100 to still have a large space of movement in the rotating direction. Figure 3 As shown, due to the difference in size of the security bayonet 10 produced by each optical accessory 100 manufacturer, the heights of the three protrusions 11 are not uniform, in order to avoid that the metal protruding structure is too high and the optical accessory 100 cannot be installed, the manufacturer of the lamp 200 can only increase the height of the channel 20 of the recess 324 at the end of the lamp 200 as much as possible, which makes most of the optical accessory 100 still have a space of movement in the vertical direction.

[0028] Please refer to Figure 5 and Figure 6 , the present application provides a locking structure of the security bayonet 10, which can eliminate the rotating gap between the security bayonet 10 attached to the optical accessory 100 and the bayonet 32 of the lamp 200, and also eliminate the gap between the security bayonet 10 (140) and the bayonet 32 of the lamp 200 in the vertical direction. The security bayonet 10 comprises a rotating part 40 and a bayonet 32 arranged on the front shell 30 of the lamp.

[0029] For the convenience of explanation and understanding, it is defined that the axial direction of the light outlet 31 of the front shell 30 of the lamp in Figure 5 is the vertical direction, and the inner and outer sides of the front shell 30 are the inner and outer directions.

[0030] The front shell 30 of the lamp has a light outlet 31 for the light of the lamp 200 to pass through, and the bayonet 32 is arranged on the circumferential side of the light outlet 31. The bayonet 32 is a circular annular stepped groove, comprising an inner ring 323 close to the light outlet 31, an outer ring 321 away from the light outlet 31, and a connecting part 322 connecting between the outer ring 321 and the inner ring 323.

[0031] The inner ring 323 and the outer ring 321 are coaxial and parallel to the light outlet 31, and the connecting portions 322 are respectively connected perpendicularly to the inner end of the outer ring 321 and the outer end of the inner ring 323. Specifically, the lamp front shell 30 extends inwardly and perpendicularly to form the outer ring 321, then extends perpendicularly towards the light outlet 31 to form the connecting portions 322, and then continues to extend inwardly and perpendicularly near the circumferential side of the light outlet 31 to form the inner ring 323, so that the bayonet 32 has the shape of a stepped groove. The side of the outer ring 321 towards the light outlet 31 is provided with internal threads 325; the connecting portions 322 are provided with grooves 324 that cooperate with the three protrusions 11 of the bayonet 10 of the optical accessory 100, and the size of the grooves 324 can limit the circumferential movement of the protrusions 11, and the height of the grooves 324 is lower than the height of the protrusions 11.

[0032] The rotating member 40 is a ring coaxially arranged with the bayonet 32, and the center of the rotating member 40 can allow the bayonet 10 of the optical accessory 100 to pass through. The outer periphery of the rotating member 40 is provided with external threads 41, and the inner periphery of the rotating member 40 is provided with notched portions 42. The rotating member 40 is screwed with the internal threads 325 of the outer ring 321 of the bayonet 32 through the external threads 41, so as to realize the screw connection between the rotating member 40 and the bayonet 32. Specifically, in this embodiment, the notched portions 42 are three, and the three notched portions 42 correspond one-to-one to the three grooves 324. In other embodiments, the number of notched portions 42 can be greater than three, as long as there are at least three corresponding to the three grooves 324.

[0033] In use, first screw the rotating member 40 into the bayonet 32 until the notched portions 42 align with the grooves 324, then pass the bayonet 10 of the optical accessory 100 through the center of the rotating member 40, so that the three protrusions 11 pass through the notched portions 42 and enter the grooves 324, and then the circumferential movement of the protrusions 11 is limited by the grooves 324. At this time, rotate the rotating member 40 so that the notches on the rotating member 40 are misaligned with the grooves 324 while continuing to screw, and because the height of the protrusions 11 is higher than the height of the grooves 324, the rotating member 40 can be rotated to press the protrusions 11, thereby eliminating the gap between the rotating member 40 and the protrusions 11. In this way, the grooves 324 and the rotating member 40 limit the movement of the bayonet 10 in the circumferential and vertical directions respectively, thereby ensuring the firmness of the installation.

[0034] Further, the rotating member 40 is provided with a rotating handle 43 to facilitate the rotation of the rotating member 40. The rotating handle 43 can be fixed to the outer periphery of the rotating member 40, or can be detachably connected to the outer periphery of the rotating member 40. Specifically, the rotating member 40 is provided with two handles respectively. It can be understood that the number of rotating members 40 can be set as needed.

[0035] Further, the locking structure further comprises a limiting fixed starting point 50 and a limiting fixed ending point 60 arranged on the front shell 30 of the lamp and located at the periphery of the bayonet 32. The rotating handle 43 is arranged between the limiting fixed starting point 50 and the limiting fixed ending point 60, so that the limiting fixed starting point 50 and the limiting fixed ending point 60 limit the movement distance of the rotating handle 43 and further limit the displacement of the rotating member 40 in the vertical direction.

[0036] Specifically, the limiting fixed starting point 50 is arranged corresponding to one of the grooves 324, and the rotating handle 43 is arranged corresponding to one of the notch portions 42. The distance between the limiting fixed starting point 50 and the limiting fixed ending point 60 is set according to the displacement of the rotating member 40 in the vertical direction to compress the protrusions 11 of different heights. In use, the clockwise rotation of the rotating handle 43 locks the lamp 200 with the optical accessory 100 with the bayonet 10; the counterclockwise rotation of the rotating handle 43 makes the rotating handle 43 and the corresponding notch portion 42 rotate to the position of the limiting fixed starting point 50 and the corresponding groove 324, so that the notch portion 42 overlaps with the groove 324, and the counterclockwise rotation of the rotating handle 43 makes the rotating member 40 move in the opposite direction to be unlocked.

[0037] The present application provides a locking structure of a bayonet 10 for locking a lamp 200 with an optical accessory 100 with the bayonet 10, comprising a rotating member 40 and a bayonet 32 arranged on the front shell 30 of the lamp, the bayonet 32 comprising three grooves 324 matched with the protrusions 11 of the bayonet 10 and an internal thread 325 arranged in the bayonet 32, the height of the groove 324 being lower than that of the protrusion 11 of the bayonet 10, the rotating member 40 comprising a rotating member body, at least three notch portions 42 arranged on the rotating member body corresponding to the three grooves 324, and an external thread 41 arranged at the periphery of the rotating body, the bayonet 32 and the rotating member 40 being screwed by the internal thread 325 and the external thread 41. The protrusion 11 of the bayonet 10 enters the groove 324 of the bayonet 32 through the notch portion 42 of the rotating member 40, and the groove 324 limits the circumferential direction of the protrusion 11; the notch portion 42 is dislocated from the groove 324 by the thread cooperation between the rotating member 40 and the bayonet 32, and the protrusion 11 is compressed to realize the limiting in the vertical direction of the protrusion 11. The locking structure provided by the present application eliminates any looseness of the connection point of the lamp 200 and the optical accessory 100 with the bayonet 10. On the one hand, it allows the installation of heavier optical accessories for the film and television lamp, and on the other hand, it ensures the precise docking of the optical accessory, such as a complex lens assembly, with the light source of the lamp, and guarantees the optical quality.

[0038] While the application has been described with reference to several exemplary embodiments, it is to be understood that the use of other words or terminologies used herein is intended to convey a practical and conceptual understanding of the present application to others skilled in the art. As such, it is submitted that the foregoing description and examples have been apparent in terms of their structures and functions, and are susceptible to various changes without departing from the spirit or essence thereof. Consequently, it is respected that all equivalent variations and modifications are intended to be included within the scope of the appended claims and their equivalents.

Claims

1. A bayonet lock structure for locking a light fixture with a bayonet light accessory, comprising a rotating member and a bayonet provided on a front shell of the light fixture, characterized in that, The bayonet is arranged on the side of the light outlet of the front shell of the lamp, the rotating member is screwed with the bayonet, the bayonet comprises three grooves matched with the protrusions of the bayonet, the height of the grooves is lower than that of the protrusions of the bayonet, the rotating member comprises at least three notched portions corresponding to the grooves; The bayonet comprises an inner ring coaxial and parallel with the light outlet, an outer ring coaxial and parallel with the light outlet, and a connecting portion connecting the inner ring and the outer ring, the inner ring is close to the light outlet, the outer ring is away from the light outlet, and the connecting portion is perpendicular to the inner end of the outer ring and the outer end of the inner ring, respectively; The outer ring is provided with an internal thread on the side facing the light outlet of the front shell of the lamp, and the grooves are arranged on the connecting portion; The rotating member comprises a circular rotating body, the outer periphery of the rotating body is provided with an external thread matched with the internal thread, and the inner periphery of the rotating member is provided with the notched portions.

2. The locking structure according to claim 1, wherein The rotating member is provided with rotating handles for rotating the rotating member.

3. The locking structure according to claim 2, wherein The rotating handles are two, and are arranged on the rotating member, respectively.

4. The locking structure according to claim 2, wherein Further comprising a limiting fixed starting point and a limiting fixed ending point arranged on the front shell and located on the side of the bayonet, the rotating handles are arranged between the limiting fixed starting point and the limiting fixed ending point, so that the limiting fixed starting point and the limiting fixed ending point limit the moving distance of the rotating handles, and further limit the displacement of the rotating member in the vertical direction.

5. The locking structure according to claim 4, wherein The limiting fixed starting point is arranged corresponding to one of the grooves, and the rotating handle is arranged corresponding to one of the notched portions.

6. The locking structure according to claim 5, wherein The distance between the limiting fixed starting point and the limiting fixed ending point is set according to the displacement of the rotating member in the vertical direction, so as to compress the protrusions with different heights.

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