A camera accessory and camera system

Abstract

This application discloses a camera accessory configured to be mounted on a camera body having a first mounting base. The camera accessory includes: a second mounting base configured to engage with the first mounting base; a contact holder rotatably disposed on the inner annular surface of the second mounting base, the contact holder having contacts configured to electrically connect with the camera body; and a guide structure disposed between the contact holder and the second mounting base. When the contact holder rotates relative to the second mounting base, the contact holder moves axially along the camera accessory under the action of the guide structure. The contact holder in this camera accessory can be raised and lowered using the rotational axis of the second mounting base, achieving electrical connection with the camera body only after the second mounting base has rotated to its designated position relative to the first mounting base, thus avoiding contact wear during rotation.

Description

Technical Field

[0001] This application relates to the field of camera technology, and in particular to a camera accessory and camera system. Background Technology

[0002] In existing cameras, camera accessories are installed onto the camera body by rotation. In addition to mechanical connections, electrical connections are also achieved through contacts. To enable electrical communication, there are usually multiple contacts arranged circumferentially. Therefore, during rotation, the contacts on the camera accessories and the contacts on the camera body will come into frictional contact, which can easily lead to wear and false triggering between the contacts. Summary of the Invention

[0003] This application provides a camera accessory to solve the problem of easy wear and tear on camera contacts in the prior art.

[0004] To address the aforementioned technical problems, this application provides a camera accessory configured to be mounted on a camera body having a first mounting base. The camera accessory includes: a second mounting base configured to engage with the first mounting base; a contact holder rotatably disposed on the inner annular surface of the second mounting base, the contact holder having contacts configured to be electrically connected to the camera body; and a guide structure disposed between the contact holder and the second mounting base. When the contact holder rotates relative to the second mounting base, the contact holder moves axially along the camera accessory under the action of the guide structure.

[0005] In one embodiment, the guide structure has a guide surface that extends circumferentially and is inclined axially; the contact holder abuts against the guide surface, and when the contact holder rotates relative to the second mounting base, the guide surface generates an axial force on the contact holder, so that the contact holder moves axially.

[0006] In one embodiment, the guiding structure includes a guide post disposed on a contact holder and a guide plate disposed on a second mounting base; the guide plate is fixed to the end face of the second mounting base opposite to the first mounting base, a guide surface is formed on the guide plate, and the guide post abuts against the guide surface.

[0007] In one embodiment, the contact holder includes a rotating ring, an elastic ring, and a retaining portion. The rotating ring is rotatably locked onto the inner ring surface of the second mounting base. The elastic ring connects the rotating ring and the retaining portion. The retaining portion is used to set the contact. A guide post is disposed on the retaining portion.

[0008] In one embodiment, the guiding structure includes a guiding groove and a guiding post. The guiding groove is formed in one of the second mounting base and the contact retainer, and the guiding post is disposed in the other of the second mounting base and the contact retainer. The guiding post passes through the guiding groove, and a guiding surface is formed in the guiding groove.

[0009] In one embodiment, the guide structure further includes a mounting groove communicating with the guide groove. During the process of the contact retainer being axially installed to the second mounting seat, the guide post enters the guide groove from the mounting groove. A limit structure is provided between the contact retainer and the second mounting seat to limit the movement of the guide post in the guide groove.

[0010] In one embodiment, the limiting structure includes a limiting hole extending circumferentially from the second mounting base and a limiting post disposed on the contact retainer, the limiting post being inserted into the limiting hole.

[0011] In one embodiment, the guiding structure includes a guiding hole formed on the second mounting base extending circumferentially, and a guiding post disposed on the contact holder, the guiding post passing through the guiding hole and the guiding surface formed in the guiding hole.

[0012] In one embodiment, the contact holder further includes a fixing ring, an elastic ring, and a retaining part. The fixing ring is fixedly disposed on the second mounting base, the elastic ring is fixedly clipped onto the fixing ring, the retaining part is rotatably disposed on the elastic ring, the retaining part is used to set the contact, and the guide post is disposed on the retaining part.

[0013] In one embodiment, the contact retainer further includes a retaining ring and a retaining part. The retaining ring is fixedly disposed on the second mounting base, and the retaining part is rotatably engaged between the retaining ring and the second mounting base. A guide structure is also provided between the retaining part and the retaining ring, and a guide post is disposed on the retaining part. The retaining part is used to set the contact.

[0014] In one embodiment, the guide surface is tilted away from the first mounting base in the mounting rotation direction of the camera accessory relative to the camera body.

[0015] In one embodiment, the first mounting base includes a plurality of first jaws, and the second mounting base includes a plurality of second jaws. The second mounting base rotates relative to the first mounting base between a first state and a second state. In the first state, all second jaws are inserted between the first jaws; in the second state, the second jaws engage with the first jaws. A contact holder is connected to a locking post, which extends out of the outer circumferential surface of the second mounting base. During the process of the second mounting base rotating relative to the first mounting base from the first state to the second state, the first jaws abut against the locking post, so that the contact holder and the first mounting base are relatively fixed in the circumferential direction. The second mounting base and the contact holder rotate relative to each other, and then the contact holder is subjected to an axial force to move axially toward the first mounting base, thereby realizing an electrical connection with the camera body.

[0016] In one embodiment, when the second mounting base is in a first state relative to the first mounting base, the contact retainer is located in a first position relative to the second mounting base; when the second mounting base is in a second state relative to the first mounting base, the contact retainer changes position relative to the second mounting base in the axial and circumferential directions and is located in a second position; a reset elastic member is provided between the contact retainer and the second mounting base, and the contact retainer can return from the second position to the first position under the action of the reset elastic member.

[0017] In one embodiment, the contact holder has a height difference with the surface of the first mounting base, and the contact is flush with the surface with the height difference.

[0018] In one embodiment, the surface of the contact holder facing the first mounting base is flat, the contact is a metal post, and a portion of the contact extends out of the contact holder to create a height difference between the contacts.

[0019] To address the aforementioned issues, this application provides a camera system comprising the aforementioned camera accessories and a camera body adapted to the camera accessories.

[0020] This application's camera accessory is configured to be mounted on a camera body having a first mounting base. The camera accessory includes: a second mounting base configured to engage with the first mounting base; a contact holder disposed on the inner annular surface of the second mounting base, the contact holder having contacts configured to electrically connect with the camera body; and a guide structure disposed between the contact holder and the second mounting base. When the contact holder rotates relative to the second mounting base, the contact holder moves axially along the camera accessory under the action of the guide structure. The contact holder in this application's camera accessory can be raised and lowered using the rotational axis of the second mounting base, achieving electrical connection with the camera body after the second mounting base has rotated to its designated position relative to the first mounting base, thus avoiding contact wear during rotation. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying 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, wherein:

[0022] Figure 1 This is a structural diagram of the camera accessories and camera body of this application;

[0023] Figure 2 This is a structural schematic diagram of the first embodiment of the camera accessory of this application;

[0024] Figure 3 yes Figure 2The diagram shows a schematic representation of the contact holder being positioned in a second position relative to the second mounting base in the first embodiment of the camera accessory shown.

[0025] Figure 4 yes Figure 2 The diagram shows a schematic representation of the contact holder being positioned relative to the second mounting base in a first embodiment of the camera accessory.

[0026] Figure 5 This is a structural schematic diagram of the second embodiment of the camera accessory of this application;

[0027] Figure 6 yes Figure 5 A schematic diagram of the first view structure of the contact holder in the second embodiment of the camera accessory shown, with the contact holder in a first position relative to the second mounting base;

[0028] Figure 7 yes Figure 5 A schematic diagram of the second-view structure of the camera accessory shown in the second embodiment, in which the contact holder is located in a first position relative to the second mounting base;

[0029] Figure 8 yes Figure 5 Exploded view of the contact holder and the second mounting base in the second embodiment of the camera accessory shown;

[0030] Figure 9 This is a structural schematic diagram of the third embodiment of the camera accessory of this application;

[0031] Figure 10 yes Figure 9 Another viewpoint structural schematic diagram of the third embodiment of the camera accessory shown;

[0032] Figure 11 This is a first-view structural diagram of the fourth embodiment of the camera accessory of this application;

[0033] Figure 12 yes Figure 11 A schematic diagram of the second-view structure of the fourth embodiment of the camera accessory shown;

[0034] Figure 13 yes Figure 11 The diagram shows a third-view structure of the fourth embodiment of the camera accessory. Detailed Implementation

[0035] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. It is understood that the specific embodiments described herein are only for explaining this application and not for limiting it. Furthermore, it should be noted that, for ease of description, only the parts related to this application are shown in the accompanying drawings, not all structures. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0036] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0037] Please see Figure 1 , Figure 1 This is a structural schematic diagram of the camera accessory and camera body of this application, that is, a structural schematic diagram of the camera system. The camera accessory 200 of this application is configured to be installed on the camera body 100 having a first mounting base 11, and there are various mounting and mating structures between the camera accessory 200 and the camera body 100.

[0038] In this embodiment, the first mounting base 11 includes a plurality of first latches 111. The camera accessory 200 includes a second mounting base 21, which includes a plurality of second latches 211. The second mounting base 21 rotates relative to the first mounting base 11 between a first state and a second state. In the first state, all the second latches 211 are inserted between the first latches 111. In the second state, the second latches 211 engage with the first latches 111.

[0039] In this application, the camera body 100 and the camera accessory 200 are separately configured, and the camera accessory 200 can be detachably installed on the camera body 100. The camera accessory 200 can be a lens or an adapter ring. If the camera accessory 200 is a lens, it can be directly connected to the camera body 100 to form a shooting camera; if it is an adapter ring, lenses with different mounts can be connected to the camera body 100 to form a shooting camera.

[0040] The camera body 100 and the camera accessory 200 are installed by the cooperation of the mounting base. The first mounting base 11 of the camera body 100 has multiple first claws 111, and the second mounting base 21 of the camera accessory 200 has multiple second claws 211. The first mounting base 11 and the second mounting base 21 are rotated to achieve the insertion, engagement and disengagement of the first claws 111 and the second claws 211.

[0041] Specifically, the second mounting base 21 rotates relative to the first mounting base 11 between a first state and a second state. The first state is the insertion and disassembly state, in which the second claws 211 are inserted between the first claws 111. For example, the first mounting base 11 has three first claws 111, which together form three first slots; the second mounting base 21 has three second claws 211, which are inserted into the three first slots to achieve insertion. The second state is the engagement state, in which the camera accessory 200 is docked and installed with the camera body 100. At this time, the second claws 211 engage with the first claws 111. After the second claws 211 are inserted between the first claws 111, they rotate to overlap with the first claws 111, thereby achieving engagement between the two and allowing the camera accessory 200 to be stably fixed on the camera body 100.

[0042] The camera accessory 200 and the camera body 100 are connected by clips, and the weight of the camera accessory 200 is supported by the clamping force between the clips. Therefore, the first mounting base 11 and the second mounting base 21 require high strength, and are generally made of metal, but high-strength plastic materials can also be used.

[0043] The camera accessory 200 and the camera body 100 can be structurally engaged and fixed by a locking claw. In this embodiment, there is also an electrical connection between the camera accessory 200 and the camera body 100 to achieve communication control.

[0044] Please refer to the details. Figure 2 , Figure 2 This is a structural schematic diagram of the first embodiment of the camera accessory of this application. The second mounting base 21 on the camera accessory 200 is annular, including an inner annular surface 212 and an outer annular surface 213. The outer annular surface 213 is engaged with the first mounting base 11, and the inner annular surface 212 is provided with an electrical connection contact point for electrical connection with the camera body 100.

[0045] The camera accessory 200 also includes a contact holder 22 and a guide structure 23. The contact holder 22 is rotatably disposed on the inner annular surface 212 of the second mounting base 21, allowing it to rotate relative to the second mounting base 21. The contact holder 22 carries the contacts, which are used to establish an electrical connection with the camera body 100.

[0046] In this embodiment, both the contact holder 22 and the contact are configured to match the contact on the camera body 100. If the multiple contacts on the camera body are arranged flat, that is, at the same height, then the surface of the contact holder 22 facing the first mounting base 11 is also flat. The contact can be columnar, inserted into the contact holder 22, and flush with the surface; the contact can also be sheet-like, attached to the surface.

[0047] If there is a height difference between multiple contacts on the camera body, the surface of the contact holder 22 can be a surface with a height difference, and the contacts can also be columnar or sheet-like, flush with the surface; that is, the height difference of the contacts is achieved by using the height difference of the surface, so that they can be connected with the high and low contact points on the camera body.

[0048] The surface of the contact holder 22 can also be flat, with the contacts being metal pillars inserted into the contact holder 22, and a portion of the contacts extending beyond the surface, thus creating a height difference between the contacts. Compared to sheet contacts, pillar-shaped contacts offer more stable electrical signal transmission performance.

[0049] The guide structure 23 is used to guide the contact holder 22 to move in the axial direction. It is disposed between the contact holder 22 and the second mounting base 21. When the contact holder 22 rotates relative to the second mounting base 21, the contact holder 22 moves in the axial direction of the camera accessory 200 under the action of the guide structure 23.

[0050] During the process of the second mounting base 21 being rotatably mounted on the first mounting base 11, the contact holder 22 can be fixed relative to the first mounting base 11 in the circumferential direction by using the structure on the first mounting base 11 or other related structures operated by the user. Then, relative rotation will occur between the second mounting base 21 and the contact holder 22, and the contact holder 22 can move axially relative to the first mounting base 11 under the action of the guide structure 23.

[0051] Because the contact holder 22 is axially movable, it is possible to achieve the following: when the second mounting base 21 rotates relative to the first mounting base 11 between the first and second states, the contact holder 22 maintains a certain axial distance from the first mounting base 11. Therefore, during rotation, the contacts 221 on the contact holder 22 and the contacts on the camera body 100 will not come into contact, and no wear will occur. Before the second mounting base 21 rotates relative to the first mounting base 11 to the second state, the second mounting base 21 will have relative movement with the contact holder 22. During this process, the contact holder 22 moves axially closer to the first mounting base 21. When rotating to the second state, the contacts 221 on the contact holder 22 make contact with the contacts on the camera body 100, thereby establishing an electrical connection.

[0052] Specifically, please refer to Figure 3-4 , Figure 3 yes Figure 2 The diagram shows a schematic representation of the contact holder being positioned in a second position relative to the second mounting base in the first embodiment of the camera accessory. Figure 4 yes Figure 2 The diagram shows a schematic of the contact holder being positioned relative to the second mounting base in the first embodiment of the camera accessory.

[0053] The guide structure 23 has a guide surface 231 that extends circumferentially and is inclined axially. The contact holder 22 abuts against the guide surface 231. Therefore, during the rotation of the contact holder 22 relative to the second mounting base 21, the axially inclined guide surface 231 can generate an axial force on the contact holder 22, so that the contact holder 22 can move axially.

[0054] In order for the contact holder 22 to move toward the first mounting base 11 during the rotation from the first state to the second state, the guide surface 231 is inclined in the mounting rotation direction A of the camera accessory 200 relative to the camera body 100, toward a direction away from the first mounting base 11. The guide surface 231 has a proximal end close to the first mounting base 11 and a distal end away from the first mounting base 11. During the rotation from the first state to the second state, the contact holder 22 abuts from the distal end to the proximal end, that is, it gradually moves closer to the first mounting base 11 in the axial direction.

[0055] In this embodiment, the contact holder 22 and the first mounting base 11 are relatively fixed using the first claw. The contact holder 22 is connected to a locking post 223, which extends out of the outer ring surface 213 of the second mounting base 21. During the process of the second mounting base 21 rotating relative to the first mounting base 11 from the first state to the second state, the first claw 111 abuts against the locking post 223, so that the contact holder 22 and the first mounting base 11 are relatively fixed in the circumferential direction. The second mounting base 21 can rotate relative to the contact holder 22, and then the contact holder 22 is subjected to an axial force to move axially toward the first mounting base 11, thereby realizing an electrical connection with the camera body 100.

[0056] A locking hole 214 corresponding to the locking post 223 is provided on the outer ring surface 213. The locking hole 214 extends circumferentially and cooperates with the locking post 223 to make room for the rotation of the second mounting base 21 relative to the contact retainer 22.

[0057] In this embodiment, when the second mounting base 21 is in a first state relative to the first mounting base 11, the contact retainer 22 is located in a first position relative to the second mounting base 21; when the second mounting base 21 is in a second state relative to the first mounting base 11, the contact retainer 22 changes position relative to the second mounting base 21 in the axial and circumferential directions under the action of the guide structure 23, and is located in a second position.

[0058] During lens disassembly, the contact holder 22 can be manually moved back to the first position to avoid contact wear of the contacts during disassembly rotation. In this embodiment, to achieve automation and facilitate user operation, a reset elastic element is provided between the contact holder 22 and the second mounting base 21. Under the action of the reset elastic element, the contact holder 22 can return from the second position to the first position.

[0059] When the second mounting base 21 rotates relative to the contact holder 22, the reset elastic element generates a spring force. Due to the action of the first pawl 111, the reset elastic element maintains the spring force. When the second mounting base 21 is disassembled and rotated, the first pawl 111 no longer acts, so the spring force of the reset elastic element can return the contact holder 22 to the first position.

[0060] exist Figure 2-4 In the first embodiment shown, the guide structure 23 includes a guide post 232 disposed on the contact holder 22 and a guide plate 233 disposed on the second mounting base 21; the guide plate 233 is fixed to the end face of the second mounting base 21 facing away from the first mounting base 11, the guide surface 231 is formed on the guide plate 233, and the guide post 232 abuts against the guide surface 231.

[0061] The contact holder 22 includes a rotating ring 224, an elastic ring 225, and a holding portion 226. The rotating ring 224 is rotatably engaged on the inner ring surface of the second mounting base 21. The elastic ring 225 connects the rotating ring 224 and the holding portion 226, and the holding portion 226 is used to set the contact. A guide post 232 is disposed on the holding portion 226. One end of the elastic ring 225 is fixed to the rotating ring 224, and the other end is fixed to the contact holder 22. Therefore, the contact holder 22 can achieve circumferential rotation through the rotating ring 224 and axial movement through the elastic ring 225.

[0062] The guiding structure is mainly disposed between the contact holder 22 and the second mounting base 21. The contact relationship between the contact holder 22 and the second mounting base 21 is multifaceted. In the first embodiment described above, the guiding structure is disposed axially between the contact holder 22 and the second mounting base 21. In other embodiments, the guiding structure may also be disposed circumferentially between the contact holder 22 and the second mounting base 21.

[0063] like Figure 5-8 The second embodiment shown, Figure 5 This is a structural schematic diagram of the second embodiment of the camera accessory of this application. Figure 6 yes Figure 5 The diagram shown is a first-view structural diagram of the contact holder in the second embodiment of the camera accessory, with the contact holder positioned relative to the second mounting base in a first position. Figure 7 yes Figure 5 The diagram shows a second-view structure of the camera accessory in the second embodiment, where the contact holder is located in a first position relative to the second mounting base. Figure 8 yes Figure 5 Exploded view of the contact holder and the second mounting base in the second embodiment of the camera accessory shown.

[0064] In the second embodiment, the camera accessories are serialized with 300, and the number of each component corresponds to the number in the first embodiment. Except for the guide structure 33 and its related structures, the other structures are generally the same as those in the first embodiment, and will not be described in detail here.

[0065] In the second embodiment, the guide structure 33 includes a guide groove 332 and a guide post 333. The guide groove 332 is formed in one of the second mounting base 31 and the contact holder 32, and the guide post 333 is disposed in the other of the second mounting base 31 and the contact holder 32. The guide post 333 passes through the guide groove 332, and the guide surface 331 is formed in the guide groove 332. That is, the guide groove 332 extends in the circumferential direction and is inclined in the axial direction. To ensure stable movement of the contact holder 32, multiple sets of guide structures 33 can be provided. In this embodiment, three sets of guide structures 33 are evenly provided in the circumferential direction.

[0066] To facilitate the assembly between the contact retainer 32 and the second mounting base 31, the guide structure 33 also includes a mounting groove 334 that connects to the guide groove 332. During the process of axially installing the contact retainer 32 to the second mounting base 31, the guide post 333 enters the guide groove 332 from the mounting groove 334.

[0067] To prevent the contact retainer 32 from sliding out of the second mounting seat 31 through the mounting groove 334 during rotation, a limit structure is provided between the contact retainer 32 and the second mounting seat 31 to limit the movement of the guide post 333 in the guide groove 332.

[0068] Specifically, the limiting structure may be a limiting hole 314 extending circumferentially from the second mounting base 31, and a limiting post 323 disposed on the contact retainer 32, with the limiting post 323 inserted into the limiting hole 314. The limiting post 323 and the limiting hole 314 can also be used as the locking post 223 and locking hole 214 as in the first embodiment.

[0069] As in the first embodiment, in the second embodiment, a reset elastic element is also provided between the contact holder 32 and the second mounting base 31. In this embodiment, the reset elastic element is a spring, but other elastic elements may also be selected.

[0070] For example Figure 9-10 The third embodiment shown, Figure 9 This is a structural schematic diagram of the third embodiment of the camera accessory of this application. Figure 10 yes Figure 9 Another viewpoint structural schematic diagram of the third embodiment of the camera accessory shown;

[0071] In the third embodiment, camera accessories are serialized using the number 400, with each component number corresponding to the numbering in the first embodiment. Except for the guide structure 33 and its related structures, the other structures are largely the same as in the first embodiment, and will not be described in detail further.

[0072] The working logic of the guide structure 43 in the third embodiment is the same as that of the guide structure 33 in the second embodiment. The guide structure 43 includes a guide hole 432 extending circumferentially from the second mounting base 41, and a guide post 433 disposed on the contact holder 42. The guide post 433 passes through the guide hole 432, and a guide surface 431 is formed in the guide hole 432. The guide hole 432, like a guide groove 332, extends circumferentially and is inclined axially. To ensure stable movement of the contact holder 42, multiple sets of guide structures 43 can be provided.

[0073] The guide post 433 passes through the guide hole 432 and can extend out of the outer ring surface 413 of the second mounting base 41. Therefore, the guide post 433 can also be used as the locking post 223 as in the first embodiment, and cooperate with the first claw 111 to achieve relative fixation between the contact retainer 42 and the first mounting base 11.

[0074] In this embodiment, the contact holder 42 further includes a fixing ring 423, an elastic ring 424, and a holding part 425. The fixing ring 423 is fixedly disposed on the second mounting base 41, the elastic ring 424 is fixedly clipped onto the fixing ring 423, the holding part 425 is rotatably disposed on the elastic ring 424, the holding part 425 is used to set the contact 421, and the guide post 433 is disposed on the holding part 425.

[0075] As in the first embodiment, in the third embodiment, a reset elastic element is further provided between the contact retainer 42 and the second mounting base 41. In this embodiment, the reset elastic element is a spring, but other elastic elements may also be selected. Specifically, a hook-shaped structure 426 can be provided at one end of the contact retainer 42, and a fixing post 414 can be provided on the second mounting base 41. The reset elastic element is connected between the hook-shaped structure 426 and the fixing post 414.

[0076] like Figure 11-13 The fourth embodiment shown, Figure 11 This is a first-view structural diagram of the fourth embodiment of the camera accessory of this application. Figure 12 yes Figure 11 The diagram shown is a second-view structural diagram of the fourth embodiment of the camera accessory. Figure 13 yes Figure 11 The diagram shows a third-view structure of the fourth embodiment of the camera accessory.

[0077] In the fourth embodiment, the camera accessories are serialized with 500, and the number of each component corresponds to the number in the first embodiment. Except for the guide structure 53 and its related structures, the other structures are generally the same as those in the first embodiment, and will not be described in detail.

[0078] In the fourth embodiment, the guide structure 53 is largely the same as the guide structure 43 in the third embodiment, and the guide structure 53 also includes a guide post 533 and a guide hole 532. The specific difference lies in the arrangement of the contact holder 42. In this embodiment, the contact holder 52 also includes a fixing ring 523 and a holding part 524. The fixing ring 523 is fixedly disposed on the second mounting base 51, and the holding part 524 is rotatably engaged between the fixing ring 523 and the second mounting base 51. A guide structure 53 is also provided between the holding part 524 and the fixing ring 523, and the guide post 533 is disposed on the holding part 524. The holding part 524 is used to set the contact 521.

[0079] As in the first embodiment, in the fourth embodiment, a reset elastic element is also provided between the contact holder 52 and the second mounting base 51. In this embodiment, the reset elastic element is a spring, but other elastic elements may also be selected.

[0080] In summary, the camera accessory of this application is configured to be installed onto a camera body having a first mounting base. The camera accessory includes: a second mounting base configured to engage with the first mounting base; a contact holder disposed on the inner annular surface of the second mounting base, the contact holder having contacts and configured to be electrically connected to the camera body; and a guide structure disposed between the contact holder and the second mounting base. When the contact holder rotates relative to the second mounting base, the contact holder moves axially along the camera accessory under the action of the guide structure. The contact holder in the camera accessory of this application can be raised and lowered using the rotational axis of the second mounting base, and can achieve electrical connection with the camera body by raising and lowering the second mounting base after it has rotated to the correct position relative to the first mounting base, thus avoiding contact wear of the contacts during rotation.

[0081] The terms "first," "second," and "third" in this application are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. All directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationships and movements between components in a specific orientation (as shown in the figures). If the specific orientation changes, the directional indications also change accordingly. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or devices.

[0082] The above are merely embodiments of this application and do not limit the scope of this patent application. Any equivalent structural or procedural changes made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of this application.

Claims

1. A camera accessory, characterized in that, The camera accessory is configured to be mounted on a camera having a first mounting base. The camera body, and the camera accessories include: The second mounting base is configured to engage with the first mounting base; A contact holder is rotatably disposed on the inner annular surface of the second mounting base. The contact holder is provided with a contact and is configured to be electrically connected to the camera body. The contact holder is fixed relative to the first mounting base in the circumferential direction, wherein the circumferential direction is the circumferential direction of the second mounting base. A guiding structure is disposed between the contact holder and the second mounting base; the contact holder and the second mounting base... When the two mounting bases rotate relative to each other, the contact holder is subjected to an axial force under the action of the guide structure, so as to move in the axial direction toward the first mounting base to realize electrical connection with the camera body, wherein the axial direction is the axial direction of the second mounting base; The guide structure has a guide surface that extends circumferentially and is inclined axially. The contact holder abuts against the guide surface. When the contact holder rotates relative to the second mounting base, the guide surface generates an axial force on the contact holder, so that the contact holder can move axially. The guide surface is inclined away from the first mounting base in the mounting rotation direction of the camera accessory relative to the camera body.

2. The camera accessory according to claim 1, characterized in that, The guiding structure includes a guide post disposed on the contact holder and a guide plate disposed on the second mounting base; the guide plate is fixed to the end face of the second mounting base opposite to the first mounting base, the guide surface is formed on the guide plate, and the guide post abuts against the guide surface.

3. The camera accessory according to claim 2, characterized in that, The contact retainer includes a rotating ring, an elastic ring, and a retaining portion. The rotating ring is rotatably engaged on the inner ring surface of the second mounting base, and the elastic ring is connected to the rotating ring. The retaining part is used to house the contact; the guide post is disposed on the retaining part.

4. The camera accessory according to claim 1, characterized in that, The guiding structure includes a guide groove and a guide post. The guide groove is formed in one of the second mounting base and the contact retainer, and the guide post is disposed in the second mounting base. The other of the two mounting bases and the contact retainer; the guide post passes through the guide groove, and the guide surface is formed in the guide groove.

5. The camera accessory according to claim 4, characterized in that, The guiding structure also includes a mounting groove communicating with the guiding groove. During the axial installation of the contact retainer to the second mounting seat, the guiding post is formed by the... The mounting groove enters the guide groove; a limit structure is provided between the contact retainer and the second mounting seat to limit the movement of the guide post in the guide groove.

6. The camera accessory according to claim 5, characterized in that, The limiting structure includes a limiting hole extending circumferentially from the second mounting base, and a limiting post disposed on the contact retainer, the limiting post being inserted into the... The limiting hole is described.

7. The camera accessory according to claim 1, characterized in that, The guiding structure includes a guiding hole extending circumferentially in the second mounting base and a guiding post disposed on the contact retainer, the guiding post passing through the guiding hole and the guiding surface being formed in the guiding hole.

8. The camera accessory according to claim 7, characterized in that, The contact retainer further includes a fixing ring, an elastic ring, and a retaining part. The fixing ring is fixedly disposed on the second mounting base, the elastic ring is fixedly snapped into the fixing ring, and the retaining part is rotatably disposed on the elastic ring. The retaining part is used to set the contact, and the guide post is disposed on the mounting base. The section on maintenance.

9. The camera accessory according to claim 7, characterized in that, The contact retainer further includes a fixing ring and a retaining part. The fixing ring is fixedly disposed on the second mounting base, and the retaining part is rotatably engaged between the fixing ring and the second mounting base. A guide structure including a guide post and a guide hole is also provided between the retaining part and the fixing ring, and the guide post is disposed on the retaining part. The retaining part is used to set the contact.

10. The camera accessory according to claim 1, characterized in that, The first mounting base includes a plurality of first claws, and the second mounting base includes a plurality of second claws. The second mounting base rotates relative to the first mounting base between a first state and a second state. In the first state, all the second claws are inserted between the first claws; in the second state, the second claws engage with the first claws. The contact retainer is connected to a locking post, which extends out of the outer circumferential surface of the second mounting base. During the process of the second mounting base rotating relative to the first mounting base from a first state to a second state, the first claw abuts against the locking post, so that the contact retainer and the first mounting base are relatively fixed in the circumferential direction, and the second mounting base and the contact retainer rotate relative to each other.

11. The camera accessory according to claim 10, characterized in that, When the second mounting base is in a first state relative to the first mounting base, the contact retainer is located in a first position relative to the second mounting base; when the second mounting base is in a second state relative to the first mounting base, the contact retainer changes position relative to the second mounting base in both the axial and circumferential directions, and is located in a second position. A reset elastic element is provided between the contact holder and the second mounting base, and the contact holder can return from the second position to the first position under the action of the reset elastic element.

12. The camera accessory according to claim 1, characterized in that, The contact holder has a height difference with the surface of the first mounting base, and the contact is flush with the surface with the height difference; or... The surface of the contact holder facing the first mounting base is flat, the contact is a metal post, and a portion of the contact extends out of the contact holder to create a height difference between the contacts.

13. A camera system, characterized in that, The camera system includes a camera accessory as described in any one of claims 1-12, and a camera body adapted to the camera accessory.

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