Camera accessory and camera system

Abstract

The utility model discloses a camera accessory and a camera system. The camera accessory is configured to be mounted to a camera body with a first mounting seat; the camera accessory includes: an accessory housing; the second mounting seat is arranged at the end part of the accessory shell, and the second mounting seat is configured to be connected with the first mounting seat in a clamping manner; the contact assembly is arranged on the inner ring surface of the second mounting seat, the contact assembly comprises a contact, and the contact is configured to be electrically connected with a camera body; and the control circuit board is arranged in the accessory shell, and the second mounting seat is electrically connected with the grounding end of the control circuit board. According to the camera accessory, grounding is achieved through the mounting base, and grounding electric connection is more stable.

Description

Technical Field

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

[0002] In existing cameras, camera accessories are installed to the camera body by rotating. In addition to mechanical connection, electrical connection is also achieved through contacts, including ground contacts. There are generally multiple contacts, which are arranged circumferentially. Therefore, during the rotation process, the contacts on the camera accessories and the contacts on the camera body will have friction contact, which can easily cause wear of the contacts and then lead to poor contact. Utility Model Content

[0003] The present application provides a camera accessory to solve the problem of poor contact of ground contacts due to wear in the prior art.

[0004] To solve the above technical problems, the present application provides a camera accessory, which is configured to be installed on a camera body having a first mounting seat; the camera accessory includes: an accessory housing; a second mounting seat, which is arranged at the end of the accessory housing, and the second mounting seat is configured to be engaged and connected with the first mounting seat; a contact assembly, which is arranged on the inner annular surface of the second mounting seat, and the contact assembly includes contacts, and the contacts are configured to be electrically connected to the camera body; a control circuit board, which is arranged in the accessory housing, and the second mounting seat is electrically connected to the ground terminal of the control circuit board.

[0005] In one embodiment, the contact assembly includes communication contacts, power contacts, and no ground contacts.

[0006] In one embodiment, the communication contacts include: a first communication contact and a second communication contact, the first communication contact is used to perform a first communication with a camera body, and the second communication contact is used to perform a second communication with the camera body that is different from the first communication; the power contacts include a first power contact and a second power contact, the first power contact is used to receive a first power, and the second power contact is used to receive a second power.

[0007] In one embodiment, in the axial direction of the camera accessory, the first communication contact and the second communication contact are at a first height, and the first power contact and the second power contact are at a second height.

[0008] In one embodiment, the contact assembly includes a contact holder, and the contact is arranged on the contact holder; a surface of the contact holder facing the first mounting seat has a height difference, and the contact is arranged flush with the surface with the height difference.

[0009] In one embodiment, the contact assembly includes a contact holder, and the contact is arranged on the contact holder; the surface of the contact holder facing the first mounting seat is flat, the contact is a metal column, and part of the contact extends out of the contact holder to form a height difference between the contacts.

[0010] In one embodiment, the first mounting seat includes a first base ring and a plurality of first claws arranged on the first base ring, and the second mounting seat includes a second base ring and a plurality of second claws arranged on the second base ring; the second mounting seat rotates relative to the first mounting seat 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 claws engage with the first claws; the first base ring and the second base ring are tightly connected.

[0011] In one embodiment, a metal sheet is connected to a side of the second base ring facing away from the first base ring, and the second base ring is connected to a ground terminal of the control circuit board through the metal sheet.

[0012] In one embodiment, a plurality of fixing holes are provided on the second base ring, and the second base ring is fixed to the accessory shell through the fixing holes; a base connecting hole is provided on the metal sheet, which is arranged corresponding to the fixing holes, so that the metal sheet is fixedly connected to the second base ring while the first base ring is fixed to the accessory shell.

[0013] In one embodiment, a base connection hole is provided at one end of the metal sheet, and the other end is a ground wire end; a ground wire is provided between the ground wire end and the ground terminal of the control circuit board.

[0014] In order 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.

[0015] The camera accessory of the present application is configured to be mounted on a camera body having a first mounting seat; the camera accessory comprises: an accessory housing; a second mounting seat, which is arranged at the end of the accessory housing, and the second mounting seat is configured to be snap-connected with the first mounting seat; a contact assembly, which is arranged on the inner annular surface of the second mounting seat, and the contact assembly comprises contacts, and the contacts are configured to be electrically connected to the camera body; a control circuit board, which is arranged in the accessory housing, and the second mounting seat is electrically connected to the grounding end of the control circuit board. The camera accessory of the present application uses the mounting seat to achieve grounding. Since the mounting seat has a large contact surface and less wear during installation, the use of the mounting seat for grounding electrical connection can make the connection more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0017] Figure 1 It is a schematic diagram of the structure of the camera accessory and the camera body of the present application;

[0018] Figure 2 It is a schematic diagram of the exploded structure of an embodiment of the camera accessory of the present application. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. It will be appreciated that the specific embodiments described herein are only used to explain the present application, rather than to limit the present application. It should also be noted that, for ease of description, only some but not all structures related to the present application are shown in the drawings. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the art without making creative work are within the scope of protection of the present application.

[0020] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0021] See also Figure 1 , Figure 1 The camera accessory 200 of the present application is configured to be mounted on a camera body 100 having a first mounting seat 11, and there are multiple mounting and matching structures between the camera accessory 200 and the camera body 100.

[0022] In this embodiment, the first mounting seat 11 includes a plurality of first claws 111. The camera accessory 200 includes a second mounting seat 21, and the second mounting seat 21 includes a plurality of second claws 211; the second mounting seat 21 rotates relative to the first mounting seat 11 between a first state and a second state, in the first state, the second claws 211 are inserted between the first claws 111; in the second state, the second claws 211 are engaged with the first claws 111.

[0023] In the present application, the camera body 100 and the camera accessory 200 are separately arranged, and the camera accessory 200 can be detachably mounted 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.

[0024] The camera body 100 and the camera accessory 200 are installed by the cooperation of the mounting seats. The first mounting seat 11 of the camera body 100 has a plurality of first claws 111, and the second mounting seat 21 of the camera accessory 200 has a plurality of second claws 211. The first mounting seat 11 and the second mounting seat 21 are rotated to achieve the embedding, engagement and disassembly between the first claws 111 and the second claws 211.

[0025] Specifically, the second mounting seat 21 rotates relative to the first mounting seat 11 between a first state and a second state. The first state is an embedding and disassembly state, and the second claws 211 are all inserted between the first claws 111. For example, there are three first claws 111 in the first mounting seat 11, and three first slots are formed between the first claws 111; there are three second claws 211 in the second mounting seat 21, and the three second claws 211 are inserted into the three first slots to achieve embedding. The second state is a snap-fit ​​state, and the camera accessory 200 and the camera body 100 are docked and installed. At this time, the second claw 211 is snap-fitted with the first claw 111. After the second claw 211 is inserted between the first claws 111, it rotates to overlap with the first claw 111, and then the snap-fit ​​between the two can be achieved, so that the camera accessory 200 can be stably fixed on the camera body 100.

[0026] The camera accessory 200 and the camera body 100 connected by the claws use the clamping force between the claws to bear the weight of the camera accessory 200. Therefore, the first mounting seat 11 and the second mounting seat 21 have high strength requirements, and are generally made of metal, but high-strength plastic materials can also be used.

[0027] The camera accessory 200 and the camera body 100 can be structurally fixed by means of a clamping claw. In this embodiment, there is also an electrical connection between the camera accessory 200 and the camera body 100 to achieve communication control.

[0028] Please refer to Figure 2 , Figure 2 The camera accessory 200 further includes an accessory housing 22 , a contact assembly 23 and a control circuit board 24 .

[0029] The accessory housing 22 is the housing of the camera accessory 200, and the second mounting seat 21 is arranged at the end of the accessory housing 22. If the camera accessory 200 is a lens, an optical lens module, a circuit board and other structures are also arranged in the accessory housing 22. If the camera accessory 200 is an adapter ring, one end is provided with the second mounting seat 21 matched with the camera body 100, and the other end is provided with a mounting seat matched with the adapter lens, and a circuit structure can also be arranged inside the adapter ring.

[0030] The second mounting seat 21 on the camera accessory 200 is annular, including an inner ring surface and an outer ring surface, the outer ring surface is engaged with the first mounting seat 11, and the inner ring surface is provided with electrical connection contacts, which are electrically connected to the camera body 100. The contact assembly 23 is provided on the inner ring surface of the second mounting seat 21, and the contact assembly 23 includes contacts 231, and the contacts 231 are used to achieve electrical connection with the camera body 100.

[0031] The control circuit board 24 is disposed in the accessory housing 22, and is used to realize the electrical control of the camera accessory 200, and is electrically connected to the contact 231. There is a ground terminal on the control circuit board 24, so the ground terminal of the control circuit board 24 can be used to realize the grounding of the camera accessory 200 when it is electrically connected to the camera body 100. In this embodiment, the second mounting seat 21 is used to realize the grounding. The second mounting seat 21 is set to a conductive material, such as metal. It is electrically connected to the ground terminal of the control circuit board 24, and the grounding of the camera accessory 200 when it is electrically connected to the camera body 100 can be realized.

[0032] The second mounting base 21 made of conductive material is in full contact with the first mounting base 11 made of conductive material, and there will be no problem of poor contact, thereby ensuring stable grounding.

[0033] Specifically, the first mounting seat 11 includes a first base ring 112 and a first claw 111 disposed on the first base ring 112, and the second mounting seat 21 includes a second base ring 212 and a second claw 211 disposed on the second base ring 212. When the second mounting seat 21 rotates relative to the first mounting seat 11 between the first state and the second state, in the second state, the first base ring 112 and the second base ring 212 are fitted and connected.

[0034] A metal sheet 25 is connected to a side of the second base ring 212 facing away from the first base ring 112 , and the second base ring 212 is connected to a ground terminal of the control circuit board 24 via the metal sheet 25 .

[0035] Specifically, the second base ring 212 is mounted on the accessory housing 22 by screws, and a plurality of fixing holes 213 are provided on the second base ring 212. The metal sheet 25 can be connected to the second base ring by using the fixing holes 213 to simplify the structure. The metal sheet 25 is also provided with a base connection hole 251, which corresponds to the fixing hole 213. When the second mounting seat 21 is fixed by bolts, studs or screws, the metal sheet 25 can also be fixed on the second mounting seat 21.

[0036] The metal sheet 25 is in a strip shape, one end of which is provided with a base connection hole, and the other end is a ground wire end, which is connected to the ground terminal of the control circuit board 24 through a ground wire 26 .

[0037] In this embodiment, the second mounting base 21 is used to achieve grounding, so the contact assembly 23 of the camera accessory 200 may no longer include a grounding contact, and may only include a communication contact and a power contact. During the installation process of the camera accessory 200, the contact may be worn, so grounding is not achieved through the grounding contact, but through a more stable connection of the mounting base, which can ensure the stability of the grounding.

[0038] The communication contacts include a first communication contact and a second communication contact, wherein the first communication contact is used for performing a first communication with the camera body, and the second communication contact is used for performing a second communication with the camera body which is different from the first communication, so as to match various communication modes applicable to the camera body 100 .

[0039] The power contacts include a first power contact and a second power contact, the first power contact is used to receive a first power, the second power contact is used to receive a second power, and the first power and the second power can be used as communication power and driving power, respectively.

[0040] In this embodiment, the first communication contact and the second communication contact can be arranged at a first height in the axial direction of the camera accessory 200, and the first power contact and the second power contact can be arranged at a second height in the axial direction of the camera accessory 200, so as to match the camera body 100 with a height difference of the contacts.

[0041] The contact assembly 23 also includes a contact holder 232, and the contact 231 is arranged on the contact holder 232. In this embodiment, the contact holder 232 and the contact 231 both cooperate with the contact arrangement on the camera body 100. If the multiple contacts on the camera body are arranged flatly, that is, at the same height; then the surface of the contact holder 232 facing the first mounting seat 11 is also a plane, and the contact 231 can be columnar, inserted in the contact holder 232, flush with the surface; the contact 231 can also be sheet-shaped and attached to the surface.

[0042] If there are height differences between multiple contacts on the camera body, the surface of the contact retaining member 232 can be a surface with the height difference, and the contact 231 can also be cylindrical or sheet-shaped, flush with the surface; that is, the height difference of the contact 231 is achieved by utilizing the height difference of the surface, so that it can be docked with the height difference contacts on the camera body.

[0043] The surface of the contact holder 232 can also be a plane, and the contact 231 is a metal column inserted in the contact holder 232, and part of the contact 231 extends out of the surface 232, so that the contact achieves a height difference. Compared with the sheet contact, the columnar contact has a more stable performance in electrical signal transmission.

[0044] The camera accessory in the present application is configured to be mounted on a camera body having a first mounting seat; the camera accessory includes: an accessory housing; a second mounting seat, which is arranged at the end of the accessory housing, and the second mounting seat is configured to be snap-connected with the first mounting seat; a contact assembly, which is arranged on the inner annular surface of the second mounting seat, and the contact assembly includes contacts, and the contacts are configured to be electrically connected to the camera body; a control circuit board, which is arranged in the accessory housing, and the second mounting seat is electrically connected to the grounding end of the control circuit board. The camera accessory in the present application uses the mounting seat to achieve grounding, and the grounding electrical connection is more stable.

[0045] The terms "first", "second", "third" in this application are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined as "first", "second", "third" can expressly or implicitly include at least one of the features. In the description of this application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. In the embodiments of this application, all directional indications (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication also changes accordingly. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the steps or units listed, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or devices.

[0046] The above are only implementation methods of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A camera accessory, characterized in that: The camera accessory is configured to be mounted on a camera body having a first mounting seat, the first mounting seat is made of a conductive material, and the camera accessory includes: Accessory housing; A second mounting seat, the second mounting seat is made of a conductive material and is disposed at an end of the accessory housing, and the second mounting seat is configured to be engaged and connected with the first mounting seat; a contact assembly, arranged on the inner annular surface of the second mounting seat, the contact assembly comprising contacts, the contacts comprising communication contacts and power contacts, but excluding ground contacts, the contacts being configured to be electrically connected to the camera body; wherein the communication contacts comprise a first communication contact and a second communication contact, the first communication contact being used for performing a first communication with the camera body, and the second communication contact being used for performing a second communication with the camera body that is different from the first communication; The power contact includes a first power contact and a second power contact, the first power contact is used to receive a first power, and the second power contact is used to receive a second power; The first communication contact and the second communication contact are at a first height, and the first power contact and the second power contact are at a second height; A control circuit board is arranged in the accessory housing, and the second mounting seat is electrically connected to the ground terminal of the control circuit board.

2. The camera accessory according to claim 1, characterized in that: The contact assembly comprises a contact holder, and the contact is arranged on the contact holder; The surface of the contact holder facing the first mounting seat has a height difference, and the contact is arranged flush with the surface with the height difference; or, the surface of the contact holder facing the first mounting seat is a plane, the contact is a metal column, and part of the contact extends out of the contact holder to form a height difference between the contacts.

3. The camera accessory according to claim 1, characterized in that: The first mounting seat comprises a first base ring and a plurality of first claws arranged on the first base ring, and the second mounting seat comprises a second base ring and a plurality of second claws arranged on the second base ring; The second mounting seat rotates relative to the first mounting seat 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 engaged with the first claw; and the first base ring and the second base ring are closely connected.

4. The camera accessory according to claim 3, characterized in that: A metal sheet is connected to a side of the second base ring facing away from the first base ring, and the second base ring is connected to a ground terminal of the control circuit board through the metal sheet.

5. The camera accessory according to claim 4, characterized in that: The second base ring is provided with a plurality of fixing holes, through which the second base ring is fixed to the accessory shell; the metal sheet is provided with a base connecting hole, which is arranged corresponding to the fixing holes, so that the metal sheet is fixedly connected to the second base ring while the first base ring is fixed to the accessory shell.

6. The camera accessory according to claim 5, characterized in that: One end of the metal sheet is provided with the base connection hole, and the other end is a ground wire end; a ground wire is provided between the ground wire end and the ground terminal of the control circuit board.

7. A camera system, characterized in that: The camera system comprises the camera accessory according to any one of claims 1 to 6, and a camera body adapted to the camera accessory.

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