CN116560166A - Camera accessory and camera system - Google Patents

Abstract

The application discloses a camera accessory configured to be mounted to a camera body having a first mount; the camera accessory includes: the second mounting seat is configured to be in clamping connection with the first mounting seat; a contact holder rotatably provided at an inner circumferential surface of the second mount, the contact holder being provided with a contact thereon configured to be electrically connected with the camera body; the guide structure is arranged between the contact holder and the second mounting seat; when the contact retainer rotates relative to the second mounting seat, the contact retainer moves in the axial direction of the camera accessory under the action of the guide structure. The contact retainer in the camera accessory can utilize the rotation axial lifting of the second mounting seat, and can lift again after the second mounting seat rotates in place relative to the first mounting seat to realize being electrically connected with the camera body, so that contact abrasion in the rotation process is avoided.

Description

Camera accessory and camera system

Technical Field

The present disclosure relates to camera technology, and more particularly, to a camera accessory and a camera system.

Background

In the existing camera, the camera accessory is mounted to the camera body in a rotating mode, and besides mechanical connection, the camera accessory is electrically connected through contacts, so that a plurality of contacts are generally arranged circumferentially for realizing electric communication. Therefore, in the rotating process, the contact points on the camera accessory and the contact points on the camera body can be in friction contact, and abrasion and false triggering among the contact points are easy to cause.

Disclosure of Invention

The application provides a camera accessory to solve among the prior art the problem that camera contact is easy wearing and tearing.

To solve the above technical problem, the present application provides a camera accessory configured to be mounted to a camera body having a first mount; the camera accessory includes: the second mounting seat is configured to be in clamping connection with the first mounting seat; a contact holder rotatably provided at an inner circumferential surface of the second mount, the contact holder being provided with a contact thereon configured to be electrically connected with the camera body; the guide structure is arranged between the contact holder and the second mounting seat; when the contact retainer rotates relative to the second mounting seat, the contact retainer moves in the axial direction of the camera accessory under the action of the guide structure.

In one embodiment, the guiding structure is formed with a guiding surface, and the guiding surface extends in the circumferential direction and is obliquely arranged in the axial direction; the contact holder abuts against the guide surface, and when the contact holder rotates relative to the second mounting seat, the guide surface generates axial force to the contact holder so that the contact holder moves in the axial direction.

In one embodiment, the guiding structure comprises a guiding post arranged on the contact holder and a guiding plate arranged on the second mounting seat; the guide plate is fixed on the end face of the second installation seat, which is away from the first installation seat, the guide surface is formed on the guide plate, and the guide column is propped against the guide surface.

In one embodiment, the contact holder comprises a rotating ring, an elastic ring and a holding part, wherein the rotating ring is rotationally clamped on the inner ring surface of the second mounting seat, the elastic ring is connected with the rotating ring and the holding part, and the holding part is used for setting the contact; the guide post is disposed on the holding portion.

In one embodiment, the guide structure includes a guide groove formed in one of the second mount and the contact holder, and a guide post provided in the other of the second mount and the contact holder; the guide post passes through the guide groove, and the guide surface is formed in the guide groove.

In one embodiment, the guide structure further comprises a mounting groove communicated with the guide groove, and the guide post enters the guide groove from the mounting groove in the process of axially mounting the contact holder on the second mounting seat; a limiting structure is arranged between the contact retainer and the second mounting seat, and the guide post is limited to move in the guide groove.

In an embodiment, the limiting structure comprises a limiting hole which is arranged on the second mounting seat and extends circumferentially, and a limiting column which is arranged on the contact holder and is inserted into the limiting hole.

In an embodiment, the guiding structure includes a guiding hole formed on the second mounting seat and extending circumferentially, and a guiding post disposed on the contact holder, the guiding post is penetrating the guiding hole, and the guiding surface is formed in the guiding hole.

In an embodiment, the contact holder further includes a fixing ring, an elastic ring, and a holding portion, the fixing ring is fixedly disposed on the second mounting seat, the elastic ring is fixedly clamped on the fixing ring, the holding portion is rotatably disposed on the elastic ring, the holding portion is used for setting the contact, and the guide post is disposed on the holding portion.

In an embodiment, the contact holder further comprises a fixing ring and a holding part, the fixing ring is fixedly arranged on the second mounting seat, and the holding part is rotationally clamped between the fixing ring and the second mounting seat; a guide structure is also arranged between the holding part and the fixed ring, and the guide column is arranged on the holding part; the holding portion is used for setting the contact.

In an embodiment, the guide surface is inclined in a direction away from the first mount in a mounting rotation direction of the camera accessory relative to the camera body.

In an embodiment, the first mount comprises a plurality of first claws, the second mount comprises a plurality of second claws, the second mount rotates relative to the first mount between a first state and a second state, and in the first state, the second claws are inserted between the first claws; in the second state, the second claw is clamped with the first claw; the contact holder is connected with a clamping column, the clamping column extends out of the outer ring surface of the second mounting seat, the second mounting seat is propped against the clamping column relative to the first mounting seat in the process of rotating from the first state to the second state, the contact holder and the first mounting seat are fixed relatively in the circumferential direction, the second mounting seat and the contact holder rotate relatively, and then the contact holder receives axial acting force to move in the direction close to the first mounting seat in the axial direction, so that the contact holder is electrically connected with a camera body.

In an embodiment, when the second mounting seat is in the first state relative to the first mounting seat, the contact retainer is located at a first position relative to the second mounting seat; when the second mounting seat is in a second state relative to the first mounting seat, the contact retainer is in a second position and is in position change in the axial direction and the circumferential direction relative to the second mounting seat; a reset elastic piece is arranged between the contact retainer and the second mounting seat, and the contact retainer can be reset to the first position from the second position under the action of the reset elastic piece.

In one embodiment, the contact holder has a height difference on a surface facing the first mount, and the contact is disposed flush with the surface having the height difference.

In one embodiment, the surface of the contact holder facing the first mounting seat is planar, the contacts are metal posts, and part of the contacts extend out of the contact holder, so that a height difference is formed between the contacts.

To solve the above problems, the present application provides a camera system, which includes the above camera accessory and a camera body adapted to the camera accessory.

The present camera accessory is configured to mount to a camera body having a first mount; the camera accessory includes: the second mounting seat is configured to be in clamping connection with the first mounting seat; a contact holder provided on an inner circumferential surface of the second mount, the contact holder being provided with a contact configured to be electrically connected with the camera body; the guide structure is arranged between the contact holder and the second mounting seat; when the contact retainer rotates relative to the second mounting seat, the contact retainer moves in the axial direction of the camera accessory under the action of the guide structure. The contact retainer in the camera accessory can utilize the rotation axial lifting of the second mounting seat, and can lift again after the second mounting seat rotates in place relative to the first mounting seat to realize being electrically connected with the camera body, so that contact abrasion in the rotation process is avoided.

Drawings

For a clearer description of the technical solutions in the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art, wherein:

FIG. 1 is a schematic view of the camera accessory and camera body of the present application;

FIG. 2 is a schematic structural view of a first embodiment of the camera assembly of the present application;

FIG. 3 is a schematic view of the first embodiment of the camera accessory of FIG. 2 with the contact holder in a second position relative to the second mount;

FIG. 4 is a schematic view of the first embodiment of the camera accessory of FIG. 2 with the contact holder in a first position relative to the second mount;

FIG. 5 is a schematic structural view of a second embodiment of the camera assembly of the present application;

FIG. 6 is a first perspective view of the second embodiment of the camera accessory of FIG. 5 with the contact holder in a first position relative to the second mount;

FIG. 7 is a second perspective view of the second embodiment of the camera accessory of FIG. 5 with the contact holder in a first position relative to the second mount;

FIG. 8 is an exploded view of the contact holder and second mount of the second embodiment of the camera accessory of FIG. 5;

FIG. 9 is a schematic structural view of a third embodiment of a camera accessory of the present application;

FIG. 10 is another perspective view of the third embodiment of the camera assembly of FIG. 9;

FIG. 11 is a first perspective view of a fourth embodiment of a camera assembly of the present application;

FIG. 12 is a second perspective view of the fourth embodiment of the camera assembly of FIG. 11;

fig. 13 is a third view structural diagram of a fourth embodiment of the camera accessory shown in fig. 11.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not limiting. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present application are shown in the drawings. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a camera accessory and a camera body, that is, a schematic structural diagram of a camera system. The camera accessory 200 is configured to be mounted to a camera body 100 having a first mount 11, with a variety of mounting mating structures between the camera accessory 200 and the camera body 100.

In this embodiment, the first mounting base 11 includes a plurality of first claws 111 thereon. The camera accessory 200 includes a second mount 21, the second mount 21 including a plurality of second claws 211; the second mount 21 rotates relative to the first mount 11 between a first state in which the second claws 211 are inserted between the first claws 111; in the second state, the second claw 211 engages with the first claw 111.

In this application, the camera body 100 and the camera accessory 200 are separately disposed, and the camera accessory 200 is detachably mounted on the camera body 100. The camera accessory 200 may be a lens or an adapter ring, and if the camera accessory 200 is a lens, the camera accessory may be directly connected to the camera body 100 to form a shooting camera; if the lens is an adapter ring, lenses with different bayonets are connected to the camera body 100 to form a shooting camera.

The camera body 100 and the camera accessory 200 are mounted through the cooperation of mounting seats, the first mounting seat 11 of the camera body 100 is provided with a plurality of first clamping claws 111, the second mounting seat 21 of the camera accessory 200 is provided with a plurality of second clamping claws 211, and the first mounting seat 11 and the second mounting seat 21 are embedded, clamped and dismounted through rotation between the first clamping claws 111 and the second clamping claws 211.

Specifically, the second mounting seat 21 rotates between a first state and a second state relative to the first mounting seat 11, the first state is an embedded and detached state, the second clamping jaws 211 are all inserted between the first clamping jaws 111, for example, three first clamping jaws 111 are arranged in the first mounting seat 11, and three first clamping grooves are formed between the first clamping jaws 111; the second mounting seat 21 is provided with three second clamping claws 211, and the three second clamping claws 211 are inserted into the three first clamping grooves to realize embedding. The second state is a clamping state, the camera accessory 200 and the camera body 100 are in butt joint, at this time, the second clamping jaw 211 is clamped with the first clamping jaw 111, and after the second clamping jaw 211 is inserted between the first clamping jaws 111, the second clamping jaw 211 rotates to overlap with the first clamping jaw 111, so that the clamping between the first clamping jaw and the second clamping jaw can be realized, and the camera accessory 200 can be stably fixed on the camera body 100.

The camera accessory 200 and the camera body 100 connected by the claws take the weight of the camera accessory 200 by the engaging force between the claws. Therefore, the first mounting seat 11 and the second mounting seat 21 have high strength requirements, and are generally made of metal materials, but high-strength plastic materials can also be selected.

The camera accessory 200 and the camera body 100 can be fastened and fixed structurally by the claws, and in this embodiment, there is also an electrical connection between the camera accessory 200 and the camera body 100 to realize communication control.

Referring specifically to fig. 2, fig. 2 is a schematic structural diagram of a first embodiment of the camera accessory of the present application. The second mounting seat 21 on the camera accessory 200 is annular, and comprises an inner annular surface 212 and an outer annular surface 213, the outer annular surface 213 is jointed with the first mounting seat 11, and the inner annular surface 212 is provided with an electrical connection contact and is electrically connected with the camera body 100.

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 ring surface 212 of the second mounting seat 21, that is, is rotatable relative to the second mounting seat 21. The contact holder 22 is used to carry contacts for making electrical connection with the camera body 100.

The contact holder 22 and the contacts of the present embodiment are both arranged in cooperation with the contacts on the camera body 100, if the contacts on the camera body are arranged flatly, the contacts are at the same height; the surface of the contact holder 22 facing the first mounting seat 11 is also planar, and the contacts may be columnar, inserted into the contact holder 22, and flush with the surface; the contacts may also be sheet-like and attached to a surface.

If the plurality of contacts on the camera body have height differences, the surface of the contact holder 22 may be a surface with the height differences, and the contacts may be columnar or sheet-like and level with the surface; i.e. the height difference of the contacts is realized by the height difference of the surface, so that the camera can be docked with the height difference contacts on the camera body.

The surface of the contact holder 22 may also be planar, the contacts being metal posts inserted into the contact holder 22, with portions of the contacts protruding from the surface, so that the contacts achieve a height difference. Compared with the sheet-shaped contact, the columnar contact has more stable electric signal transmission performance.

The guide structure 23 is for guiding the contact holder 22 to move in the axial direction, and is provided between the contact holder 22 and the second mount 21; when the contact holder 22 and the second mount 21 are rotated relatively, the contact holder 22 moves in the axial direction of the camera accessory 200 by the guide structure 23.

In the process of rotationally mounting the second mounting seat 21 on the first mounting seat 11, the contact holder 22 and the first mounting seat 11 can be fixed relatively in the circumferential direction by utilizing the structure on the first mounting seat 11 or other related structures operated by a user, and then the second mounting seat 21 and the contact holder 22 can rotate relatively, and the contact holder 22 can axially move relative to the first mounting seat 11 under the action of the guide structure 23.

As the contact holder 22 is axially movable, this is achieved; the contact holder 22 is axially spaced from the first mount 11 when the second mount 21 is rotated between the first state and the second state with respect to the first mount 11, so that the contact 221 on the contact holder 22 and the contact on the camera body 100 do not come into contact and wear does not occur when rotated. Before the second mount 21 rotates relative to the first mount 11 to the second state, the second mount 21 moves relative to the contact holder 22, during which the contact holder 22 approaches the first mount 21 in the axial direction, and when rotated to the second state, the contacts 221 on the contact holder 22 come into contact with the contacts on the camera body 100, thereby making electrical connection.

Referring to fig. 3-4, fig. 3 is a schematic structural view of the first embodiment of the camera accessory shown in fig. 2, in which the contact holder is located at the second position with respect to the second mounting seat, and fig. 4 is a schematic structural view of the first embodiment of the camera accessory shown in fig. 2, in which the contact holder is located at the first position with respect to the second mounting seat.

The guide structure 23 is formed with a guide surface 231, and the guide surface 231 is provided to extend in the circumferential direction and to be inclined in the axial direction, and the contact holder 22 abuts against the guide surface 231. Thus, during rotation of the contact holder 22 relative to the second mounting seat 21, the axially inclined guide surface 231 may exert an axial force on the contact holder 22 to cause the contact holder 22 to move in an axial direction.

In order that the contact holder 22 can move toward the first mount 11 during the rotation from the first state to the second state, the guide surface 231 is inclined in a direction away from the first mount 11 in the mounting rotation direction a of the camera accessory 200 with respect to the camera body 100. The guide surface 231 has a proximal end near the first mount 11 and a distal end far from the first mount 11, and the contact holder 22 is moved from the distal end to the proximal end, i.e., gradually approaches the first mount 11 in the axial direction, during the rotation of the first state to the second state.

In the present embodiment, the first claw is used to achieve the relative fixation of the contact holder 22 and the first mount 11. The contact holder 22 is connected with a locking post 223, the locking post 223 extends out of the outer annular surface 213 of the second mounting seat 21, and in the process that the second mounting seat 21 rotates from the first state to the second state relative to the first mounting seat 11, the first claw 111 abuts against the locking post 223, so that the contact holder 22 and the first mounting seat 11 are relatively fixed in the circumferential direction, the second mounting seat 21 and the contact holder 22 can relatively rotate, and then the contact holder 22 is subjected to axial acting force to move towards the direction approaching the first mounting seat 11 in the axial direction, so that the electric connection with the camera body 100 is realized.

The outer ring surface 213 is provided with a locking hole 214 corresponding to the locking post 223, the locking hole 214 extends circumferentially, and the mating locking post 223 gives way to the rotation of the second mounting seat 21 relative to the contact holder 22.

In the present embodiment, when the second mounting seat 21 is in the first state relative to the first mounting seat 11, the contact holder 22 is located at the first position relative to the second mounting seat 21; when the second mounting seat 21 is in the second state relative to the first mounting seat 11, the contact holder 22 is changed in position relative to the second mounting seat 21 in the axial direction and the circumferential direction under the action of the guide structure 23, and is located at the second position.

During the lens removal process, the contact holder 22 can be manually pulled back to the first position, avoiding contact wear of the contacts during the removal rotation. In this embodiment, in order to achieve automation and facilitate user operation, a return elastic member is disposed between the contact holder 22 and the second mounting seat 21, and the contact holder 22 can return to the first position from the second position under the action of the return elastic member.

When the second mounting seat 21 and the contact holder 22 are rotated relatively, the return elastic member generates elastic force, and the return elastic member maintains the elastic force due to the first jaw 111. When the second mounting seat 21 is disassembled to rotate, the first jaw 111 is not acted, so that the elastic force of the reset elastic member can restore the contact point retainer 22 to the first position.

In the first embodiment shown in fig. 2-4, the guide structure 23 comprises a guide post 232 provided on the contact holder 22, and a guide plate 233 provided on the second mount 21; the guide plate 233 is fixed to an end surface of the second mounting seat 21 facing away from the first mounting seat 11, the guide surface 231 is formed on the guide plate 233, and the guide post 232 abuts against the guide surface 231.

The contact holder 22 includes a rotary ring 224, an elastic ring 225, and a holding portion 226, the rotary ring 224 is rotatably clamped on the inner ring surface of the second mounting seat 21, the elastic ring 225 connects the rotary ring 224 and the holding portion 226, and the holding portion 226 is used for setting contacts; the guide post 232 is provided to the holding portion 226. Wherein 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, so that the contact holder 22 can be circumferentially rotated by the rotating ring 224 and axially moved by the elastic ring 225.

The guide structure is mainly provided between the contact holder 22 and the second mount 21, the contact relationship of the contact holder 22 and the second mount 21 is multifaceted, and in the above-described first embodiment, the guide structure is provided between the contact holder 22 and the second mount 21 in the axial direction. In other embodiments, the guide structure may also be circumferentially disposed between the contact holder 22 and the second mount 21

Fig. 5-8 are schematic structural views of a second embodiment of the camera accessory according to the present application, fig. 6 is a schematic structural view of a first view of the contact holder in a first position with respect to the second mount in the second embodiment of the camera accessory shown in fig. 5, fig. 7 is a schematic structural view of a second view of the contact holder in a first position with respect to the second mount in the second embodiment of the camera accessory shown in fig. 5, and fig. 8 is an exploded view of the contact holder and the second mount in the second embodiment of the camera accessory shown in fig. 5.

In the second embodiment, the serial numbers of the camera accessory are 300, wherein the numbers of the components correspond to those of the first embodiment, and other structures except for the guiding structure 33 and related structures are substantially the same as those of the first embodiment, and detailed descriptions thereof are omitted.

The guide structure 33 in the second embodiment includes a guide groove 332 and a guide post 333, the guide groove 332 being formed in one of the second mount 31 and the contact holder 32, the guide post 333 being provided in the other of the second mount 31 and the contact holder 32. The guide post 333 is disposed through the guide groove 332, and the guide surface 331 is formed in the guide groove 332, i.e., 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, the guide structures 33 may be provided in plural groups, and in this embodiment, three groups of guide structures 33 are uniformly provided in the circumferential direction.

To facilitate the assembly between the contact holder 32 and the second mount 31, the guide structure 33 further includes a mounting groove 334 communicating with the guide groove 332, and the guide post 333 enters the guide groove 332 from the mounting groove 334 during the axial mounting of the contact holder 32 to the second mount 31.

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

The limiting structure may specifically be a limiting hole 314 extending circumferentially on the second mounting seat 31, and a limiting post 323 disposed on the contact holder 32, where the limiting post 323 is inserted into the limiting hole 314. The stopper post 323 and the stopper hole 314 can serve as both the stopper post 223 and the stopper hole 214 as in the first embodiment.

As in the first embodiment, in the second embodiment, a return elastic member is further disposed between the contact holder 32 and the second mounting seat 31, and in this embodiment, the return elastic member is a spring, and other elastic members may be used.

Also for example, a third embodiment shown in fig. 9-10, fig. 9 is a schematic structural view of the third embodiment of the camera accessory of the present application, and fig. 10 is another schematic structural view of the third embodiment of the camera accessory of fig. 9;

in the third embodiment, the camera accessory is numbered in series at 400, with the number of each component corresponding to the number in the first embodiment. The other structures except for the guiding structure 33 and the related structures thereof are substantially the same as those in the first embodiment, and detailed descriptions thereof are omitted.

The working logic of the guide structure 43 in the third embodiment is identical to that of the guide structure 33 in the second embodiment, and the guide structure 43 includes a guide hole 432 formed on the second mounting seat 41 and extending circumferentially, and a guide post 433 provided on the contact holder 42, the guide post 433 penetrating the guide hole 432, a guide surface 431 being formed in the guide hole 432, the guide hole 432 extending circumferentially as the guide groove 332 and being inclined in the axial direction. To ensure a stable movement of the contact holder 42, the guide structure 43 may be provided with a plurality of sets.

The guide post 433 is disposed through the guide hole 432 and can extend out of the outer ring 413 of the second mounting seat 41, so that the guide post 433 can be used as the locking post 223 in the first embodiment, and cooperates with the first claw 111 to fix the contact holder 42 and the first mounting seat 11 relatively.

In this embodiment, the contact holder 42 further includes a fixing ring 423, an elastic ring 424, and a holding portion 425, where the fixing ring 423 is fixedly disposed on the second mounting seat 41, the elastic ring 424 is fixedly clamped on the fixing ring 423, the holding portion 425 is rotatably disposed on the elastic ring 424, the holding portion 425 is used for disposing the contact 421, and the guide post 433 is disposed on the holding portion 425.

As in the first embodiment, in the third embodiment, a return elastic member is further provided between the contact holder 42 and the second mounting seat 41, and in this embodiment, the return elastic member is a spring, and other elastic members may be used. Specifically, a hook structure 426 may be provided at one end of the contact holder 42, a fixing post 414 may be provided on the second mounting seat 41, and a return elastic member may be connected between the hook structure 426 and the fixing post 414.

Fig. 11 is a schematic view of a first view angle structure of a fourth embodiment of the camera accessory according to the present application, fig. 12 is a schematic view of a second view angle structure of the fourth embodiment of the camera accessory shown in fig. 11, and fig. 13 is a schematic view of a third view angle structure of the fourth embodiment of the camera accessory shown in fig. 11.

In the fourth embodiment, the camera accessory is numbered in series with 500, wherein the numbers of the respective components correspond to those in the first embodiment, and other structures except for the guide structure 53 and related structures thereof are substantially the same as those in the first embodiment, and detailed descriptions thereof are omitted.

The guide structure 53 in the fourth embodiment is substantially 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 is that the contact holder 42 is arranged, in this embodiment, the contact holder 52 further includes a fixing ring 523 and a holding portion 524, the fixing ring 523 is fixedly arranged on the second mounting seat 51, and the holding portion 524 is rotationally clamped between the fixing ring 523 and the second mounting seat 51; a guide structure 53 is also provided between the holding portion 524 and the fixing ring 523, and a guide post 533 is provided to the holding portion 524; the holding portion 524 is used to set the contact 521.

As in the first embodiment, in the fourth embodiment, a return elastic member is further provided between the contact holder 52 and the second mounting seat 51, and in this embodiment, the return elastic member is a spring, and other elastic members may be used.

In summary, the present camera accessory is configured to mount to a camera body having a first mount; the camera accessory includes: the second mounting seat is configured to be in clamping connection with the first mounting seat; a contact holder provided on an inner circumferential surface of the second mount, the contact holder being provided with a contact configured to be electrically connected with the camera body; the guide structure is arranged between the contact holder and the second mounting seat; when the contact retainer rotates relative to the second mounting seat, the contact retainer moves in the axial direction of the camera accessory under the action of the guide structure. The contact retainer in the camera accessory can utilize the rotation axial lifting of the second mounting seat, and can lift again after the second mounting seat rotates in place relative to the first mounting seat to realize being electrically connected with the camera body, so that contact abrasion in the rotation process is avoided.

The terms "first," "second," "third," and the like in this application are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", and "a third" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise. All directional indications (such as up, down, left, right, front, back … …) in the embodiments of the present application are merely used to explain the relative positional relationship, movement, etc. between the components in a particular gesture (as shown in the drawings), and if the particular gesture changes, the directional indication changes accordingly. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus.

The foregoing is only the embodiments of the present application, and not the patent scope of the present application is limited by the foregoing description, but all equivalent structures or equivalent processes using the contents of the present application and the accompanying drawings, or directly or indirectly applied to other related technical fields, which are included in the patent protection scope of the present application.

Claims (15)

1. A camera accessory configured to be mounted to a camera body having a first mount, the camera accessory comprising:

the second installation seat is configured to be in clamping connection with the first installation seat;

a contact holder rotatably provided on an inner circumferential surface of the second mount, the contact holder being provided with a contact configured to be electrically connected with the camera body;

a guide structure disposed between the contact holder and the second mount; when the contact retainer and the second mounting seat rotate relatively, the contact retainer moves in the axial direction of the camera accessory under the action of the guide structure.

2. The camera accessory of claim 1, wherein the guide structure is formed with a guide surface that extends in a circumferential direction and is disposed obliquely in an axial direction; the contact holder abuts against the guide surface, and when the contact holder rotates relative to the second mounting seat, the guide surface generates axial force to the contact holder so that the contact holder moves in the axial direction.

3. The camera accessory of claim 2, wherein the guide structure comprises a guide post disposed on the contact holder, and a guide plate disposed on the second mount; the guide plate is fixed on the end face, away from the first mounting seat, of the second mounting seat, the guide surface is formed on the guide plate, and the guide column abuts against the guide surface.

4. A camera accessory according to claim 3, wherein the contact holder includes a rotary ring rotatably engaged with an inner annular surface of the second mount, an elastic ring connecting the rotary ring and the holding portion, and a holding portion for setting the contact; the guide post is provided to the holding portion.

5. The camera accessory of claim 2, wherein the guide structure includes a guide slot formed in one of the second mount and the contact holder and a guide post disposed in the other of the second mount and the contact holder; the guide post is arranged in the guide groove in a penetrating mode, and the guide surface is formed in the guide groove.

6. The camera accessory of claim 5, wherein the guide structure further comprises a mounting slot in communication with the guide slot, the guide post entering the guide slot from the mounting slot during axial mounting of the contact holder to the second mount;

a limit structure is arranged between the contact retainer and the second mounting seat to limit the guide post to move in the guide groove.

7. The camera accessory of claim 6, wherein the limit structure includes a circumferentially extending limit hole provided on the second mount, and a limit post provided on the contact holder, the limit post being inserted into the limit hole.

8. The camera accessory of claim 2, wherein the guide structure includes a circumferentially extending guide hole formed in the second mount, and a guide post provided on the contact holder, the guide post passing through the guide hole, the guide surface being formed in the guide hole.

9. The camera accessory of claim 8, wherein the contact holder further comprises a fixing ring fixedly provided to the second mount, an elastic ring fixedly engaged to the fixing ring, and a holding portion rotatably provided to the elastic ring, the holding portion being for setting the contact, the guide post being provided to the holding portion.

10. The camera accessory of claim 8, wherein the contact holder further comprises a retaining ring fixedly disposed on the second mount, and a retaining portion rotatably captured between the retaining ring and the second mount; the guide structure is also arranged between the holding part and the fixed ring, and the guide column is arranged on the holding part; the holding portion is used for setting the contact.

11. The camera accessory of claim 2, wherein the guide surface is inclined away from the first mount in a mounting rotational direction of the camera accessory relative to the camera body.

12. The camera accessory of claim 1, wherein the first mount includes a plurality of first jaws and the second mount includes a plurality of second jaws, the second mount rotating relative to the first mount between a first state in which the second jaws are each interposed between the first jaws and a second state; in the second state, the second claw is clamped with the first claw;

the contact holder is connected with a clamping column, the clamping column extends out of the outer ring surface of the second mounting seat, the second mounting seat is opposite to the first mounting seat, in the process of rotating from a first state to a second state, the first clamping claw abuts against the clamping column, so that the contact holder and the first mounting seat are relatively fixed in the circumferential direction, the second mounting seat and the contact holder relatively rotate, and then the contact holder receives axial acting force to move towards the direction close to the first mounting seat in the axial direction, and electric connection with the camera body is achieved.

13. The camera accessory of claim 12, wherein the contact holder is in a first position relative to the second mount when the second mount is in a first state relative to the first mount; when the second mounting seat is in a second state relative to the first mounting seat, the contact retainer is in a second position and is in a position change in the axial direction and the circumferential direction relative to the second mounting seat;

and a reset elastic piece is arranged between the contact retainer and the second mounting seat, and the contact retainer can be reset to the first position from the second position under the action of the reset elastic piece.

14. The camera accessory of claim 1, wherein a surface of the contact holder facing the first mount has a height differential, the contact being disposed flush with the surface having the height differential; or,

the surface of the contact retainer facing the first mounting seat is a plane, the contacts are metal columns, and part of the contacts extend out of the contact retainer so that a height difference is formed between the contacts.

15. A camera system, characterized in that it comprises the camera accessory of any one of claims 1-14, and a camera body adapted to the camera accessory.