Focusing device and shooting equipment

Abstract

The utility model relates to a focusing device and shooting equipment. The focusing device comprises a camera front cover; the sensor plate and the camera front cover are oppositely arranged in the first direction; the first support is rotatably arranged on the camera front cover around a first axis, the first support is positioned on the camera front cover in a first direction, and an abutting piece is arranged on the first support; the sensor plate is installed on the second support, and the second support is provided with a guide face extending in the circumferential direction of the first axis; the first elastic piece is used for pressing the second bracket to the camera front cover; the abutting piece is pressed on the guide face so that the second support can move relative to the camera front cover in the first direction in the rotating process of the first support.

Description

Technical Field

[0001] The utility model relates to the field of focusing, in particular to a focusing device and shooting equipment. Background Art

[0002] In some shooting devices, the shooting focal length is determined by the distance between the camera front cover and the sensor board. After the shooting device leaves the factory, the distance between the camera front cover and the sensor board is usually unchangeable, that is, the focal length of the shooting device cannot be adjusted during the actual shooting process, which results in the actual shooting capability of the shooting device being difficult to meet the shooting requirements. Utility Model Content

[0003] Based on this, it is necessary to provide a focusing device and a shooting equipment to address the problem that the focal length of the shooting device cannot be adjusted.

[0004] A focusing device, comprising:

[0005] Camera front cover;

[0006] A sensor plate, arranged opposite to the camera front cover in a first direction;

[0007] A first bracket is rotatably disposed on the camera front cover around a first axis, and the first bracket is positioned on the camera front cover in a first direction, and an abutment member is disposed on the first bracket;

[0008] a second bracket, the sensor plate being mounted on the second bracket, and the second bracket being provided with a guide surface extending circumferentially along the first axis;

[0009] A first elastic member, used for pressing the second bracket toward the camera front cover;

[0010] A heat dissipation sheet metal is installed on a side of the sensor board facing away from the camera front cover, and a thermal conductive gel is coated between the heat dissipation sheet metal and the sensor board; and

[0011] A graphite heat sink is mounted on a side of the heat dissipation sheet metal facing away from the sensor board;

[0012] The abutment member is pressed against the guide surface so that the second bracket can move relative to the camera front cover along the first direction during the rotation of the first bracket.

[0013] The first bracket of the utility model is provided with a positioning hole, the abutment member is a ball bearing, and the abutment member is rollingly arranged at the positioning hole.

[0014] In the utility model, a part of the abutment is located outside the positioning hole, and the part of the abutment outside the positioning hole is pressed on the guide surface so that the first bracket and the second bracket are spaced apart.

[0015] The first bracket of the utility model is provided with a positioning hole, the abutment member is installed at the positioning hole, and the positioning hole is a through hole to allow the abutment member to be pressed on the camera front cover.

[0016] The elastic gasket is arranged between the camera front cover and the abutment member of the utility model.

[0017] The extending direction of the first axis of the utility model is parallel to the first direction, and the guide surface extends in a circumferential spiral along the first axis.

[0018] The camera front cover of the utility model is threadedly connected with a first screw, the first screw penetrates the second bracket, and two ends of the first elastic member are respectively abutted against the second bracket and the nut of the first screw.

[0019] The camera front cover of the utility model is provided with a guide column extending along a first direction, the second bracket is provided with a guide hole, and the guide column is inserted into the guide hole.

[0020] The utility model discloses a camera front cover provided with a rotating shaft, a focusing gear and a pressure plate provided on the rotating shaft, the focusing gear being located between the camera front cover and the pressure plate, a second elastic member being provided between the camera front cover and the focusing gear, a third elastic member being provided between the pressure plate and the focusing gear, and a transmission tooth being provided on the first bracket.

[0021] A shooting device comprises a focusing device.

[0022] The beneficial effects of the utility model are:

[0023] Under the extrusion of the first elastic member, the abutment member can always keep in contact with the guide surface, so that the abutment member can contact different parts of the guide surface during the rotation of the first bracket, thereby allowing the second bracket to approach the first bracket or push the second bracket away from the first bracket.

[0024] The utility model converts the rotation action of the first bracket into the movement action of the second bracket under the cooperation of the guide surface, the abutment member and the first elastic member, so as to achieve the purpose of adjusting the distance between the camera front cover and the sensor plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the exploded structure of the shooting device in Example 1 of the utility model;

[0026] Figure 2 for Figure 1 The enlarged structural diagram at A in the middle;

[0027] Figure 3 for Figure 1 The enlarged structural diagram at B in the middle;

[0028] Figure 4 for Figure 1 A schematic diagram of a three-dimensional structure of the first bracket and the second bracket at another viewing angle;

[0029] Figure 5 for Figure 4 A schematic diagram of a three-dimensional structure of the first bracket and the second bracket at another viewing angle;

[0030] Figure 6 The side view of the assembly relationship between the first bracket and the second bracket in Example 1 of the utility model Figure 1 ;

[0031] Figure 7 The side view of the assembly relationship between the first bracket and the second bracket in Example 1 of the utility model Figure 2 ;

[0032] Figure 8 It is a schematic diagram of the cross-sectional structure of the focusing device in Example 1 of the utility model.

[0033] Reference numerals:

[0034] 1. Camera front cover; 11. First screw; 12. Elastic gasket; 13. Rotating shaft; 131. Focusing gear; 132. Pressing plate; 2. Sensor plate; 3. First bracket; 31. Abutment; 32. Positioning hole; 33. Transmission gear; 4. Second bracket; 41. Guide surface; 42. Base plate; 43. Bump; 5. First elastic member; 6. Heat dissipation sheet metal; 7. Graphite heat sink. DETAILED DESCRIPTION

[0035] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0036] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0037] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0038] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0040] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0041] Embodiment 1:

[0042] See also Figure 1-Figure 3 , this embodiment provides a shooting device, including a focusing device.

[0043] The focusing device comprises a camera front cover 1 and a sensor plate 2, wherein the sensor plate 2 is arranged opposite to the camera front cover 1 in a first direction. The camera front cover 1 is provided with a light-intake hole at the center. In this embodiment, the sensor plate 2 and the camera front cover 1 can move relative to each other in the first direction, thereby changing the distance between the sensor plate 2 and the light-intake hole in the first direction, thereby achieving the purpose of adjusting the focal length of the shooting device.

[0044] See also Figure 1 , Figure 3-Figure 7 In order to achieve the purpose of changing the relative position of the sensor board 2 and the camera front cover 1 in the first direction, the focusing device further includes a first elastic member 5, a first bracket 3 and a second bracket 4. The first bracket 3 and the second bracket 4 are both located between the camera front cover 1 and the sensor board 2 and are opposite to each other in the first direction. The middle parts of the first bracket 3 and the second bracket 4 are both provided with a avoidance opening so that the light at the light-inlet through hole on the camera front cover 1 can be smoothly projected to the sensor board 2. The first elastic member 5 can be a spring.

[0045] The first bracket 3 is rotatably arranged on the camera front cover 1 around the first axis. In this embodiment, the first axis is parallel to the first direction. In some other embodiments, there may be a certain angle between the first axis and the first direction, as long as the first axis and the first direction are not perpendicular. In addition, the first bracket 3 is positioned on the camera front cover 1 in the first direction, that is, the first bracket 3 and the camera front cover 1 will not produce relative displacement in the first direction. The first bracket 3 is provided with an abutment 31, and the first bracket 3 can drive the abutment 31 to rotate around the first axis, and the abutment 31 is also positioned on the camera front cover 1 in the first direction. As long as the above conditions are met, the connection relationship between the abutment 31 and the first bracket 3 can be a fixed connection or a movable connection, and the fixed connection method includes but is not limited to adhesion, welding, integrated molding and the like.

[0046] The sensor board 2 is mounted on the second bracket 4 so that the sensor board 2 can move synchronously with the second bracket 4. Further, a guide column extending along the first direction is provided on the camera front cover 1, and a guide hole is provided on the second bracket 4. The guide column is plugged into the guide hole. Accordingly, the second bracket 4 can only move radially along the first direction on the camera front cover 1.

[0047] The second bracket 4 is provided with a guide surface 41, which extends circumferentially along the first axis. In this embodiment, the second bracket 4 includes a substrate 42 and a bump 43, the sensor plate 2 is mounted on a side of the substrate 42 away from the first bracket 3, and the bump 43 is fixed on a side of the substrate 42 close to the first bracket 3, wherein the guide surface 41 is the outer wall surface of the bump 43 away from the substrate 42. Different parts of the bump 43 have different thicknesses in the first direction (for the convenience of description, hereinafter referred to as thickness), that is, the spacing between different parts of the guide surface 41 and the substrate 42 will also be different.

[0048] One end of the first elastic member 5 is pressed against the base plate 42 , thereby pressing the guide surface 41 toward the camera front cover 1 in the first direction until the abutting member 31 is pressed against the guide surface 41 .

[0049] This embodiment provides a specific setting method for the first elastic member 5. A first screw 11 is threadedly connected to the camera front cover 1. The first screw 11 passes through the second bracket 4. The first elastic member 5 is sleeved on the first screw 11, so that the two ends of the first elastic member 5 are respectively abutted against the second bracket 4 and the nut of the first screw 11.

[0050] As the first bracket 3 rotates, the abutting member 31 can abut different parts of the guide surface 41. Specifically, when the abutting member 31 turns to the thicker part of the protrusion 43, the abutting member 31 will push the guide surface 41 away from the first bracket 3 and further squeeze the first elastic member 5, thereby increasing the distance between the first bracket 3 and the second bracket 4 in the first direction. When the abutting member 31 turns to the thinner part of the protrusion 43, the abutting member 31 will be displaced in the first direction away from the guide surface 41. At the same time, the first elastic member 5 gradually recovers, thereby pushing the second bracket 4 toward the first bracket 3, so that the abutting member 31 is always in contact with the guide surface 41, thereby reducing the distance between the first bracket 3 and the second bracket 4 in the first direction. Under the coordinated action of the guide surface 41, the abutting member 31 and the first elastic member 5, the rotation of the first bracket 3 is converted into the translation of the second bracket 4. During the rotation of the first bracket 3, the sensor plate 2 on the second bracket 4 can be displaced in the first direction relative to the camera front cover 1, thereby achieving the purpose of changing the focal length.

[0051] From the analysis of the above movement process, it can be seen that during the focal length adjustment process, the abutment 31 needs to slide on the guide surface 41. For this reason, in this embodiment, the guide surface 41 extends circumferentially spirally along the first axis, so that the guide surface 41 is constructed into a smooth inclined surface without obvious bending parts, thereby reducing the occurrence of the abutment 31 getting stuck during the sliding process on the guide surface 41.

[0052] In order to further reduce the resistance of the abutment 31 during its sliding on the guide surface 41, a positioning hole 32 is provided on the first bracket 3 of this embodiment. The abutment 31 is a ball bearing, and the abutment 31 is rollingly arranged in the positioning hole 32. Therefore, during the rotation of the first bracket 3, rolling friction with smaller friction force is generated between the abutment 31 and the guide surface 41, rather than sliding friction.

[0053] In this embodiment, the abutment 31 is not completely located in the positioning hole 32, but a part of it is located outside the positioning hole 32. The part of the abutment 31 outside the positioning hole 32 presses on the guide surface 41. Therefore, when the abutment 31 slides on the guide surface 41, a certain distance is always maintained between the first bracket 3 and the second bracket 4, so that the rotation process of the first bracket 3 will not be interfered by the second bracket 4.

[0054] In some embodiments, the positioning hole 32 can be a blind hole, and the guide surface 41 can abut the abutment 31 against the end wall of the positioning hole 32. Since the first bracket 3 has been positioned on the camera front cover 1 in the first direction, the abutment 31 is also positioned in the first direction on the camera front cover 1 through the end wall of the positioning hole 32.

[0055] See also Figure 8 In this embodiment, the positioning hole 32 is a through hole, so that the guide surface 41 can press the abutment 31 at one end of the positioning hole 32, so that the abutment 31 is pressed on the camera front cover 1 at the other end of the positioning hole 32. In this way, the abutment 31 can be directly positioned on the camera front cover 1 in the first direction.

[0056] In contrast, during the rotation of the first bracket 3, the abutment 31 will generate friction with the camera front cover 1, which may cause wear of the camera front cover 1 and / or the abutment 31. Since the abutment 31 is relatively small, the abutment 31 may completely enter the positioning hole 32 during the wear process. At this time, due to the obstruction of the edge of the positioning hole 32, the abutment 31 cannot contact the guide surface 41. For this reason, in this embodiment, an elastic gasket 12 is provided between the camera front cover 1 and the abutment 31. The elastic gasket 12 can extend circumferentially along the first axis, so that the abutment 31 is always in contact with the elastic gasket 12 during the rotation of the first bracket 3. When the abutment 31 and / or the elastic gasket 12 are less worn, the abutment 31 causes the elastic gasket 12 to undergo a greater deformation under the extrusion of the guide surface 41. As the wear increases, the portion of the elastic gasket 12 at the positioning hole 32 and / or the volume of the abutment 31 will decrease. At this time, the elastic gasket 12 can recover to a certain extent, thereby stably pushing a portion of the abutment 31 out of the positioning hole 32 and into contact with the guide surface 41.

[0057] In this embodiment, a gear transmission is adopted to control the rotation of the first bracket 3. A rotating shaft 13 is provided on the camera front cover 1. One end of the rotating shaft 13 is assembled on the camera front cover 1, and the other end is assembled with a pressure plate 132. A focusing gear 131 is also assembled on the rotating shaft 13. The focusing gear 131 is arranged at intervals relative to both ends of the rotating shaft 13, so the focusing gear 131 is located between the camera front cover 1 and the pressure plate 132.

[0058] When the focus gear 131 is meshed with the transmission gear 33 , the focus gear 131 can perform transmission control on the first bracket 3 .

[0059] In some other embodiments, a second elastic member is provided between the camera front cover 1 and the focus gear 131, and the second elastic member may be a spring. A third elastic member is provided between the pressure plate 132 and the focus gear 131, and the third elastic member may be a damping ring. When the elastic forces of the second elastic member and the damping ring are balanced, the focus gear 131 and the transmission gear 33 are in a separated state, and the focal length is locked by the elastic force of the first elastic member 5. When the focal length needs to be adjusted, the focus gear 131 can be manually pushed so that the focus gear 131 and the transmission gear 33 are engaged. During this process, one of the second elastic member and the third elastic member is further deformed, and then the focus gear 131 is rotated to adjust the focal length. After the adjustment is completed, the focus gear 131 is released. Under the resetting action of the second elastic member or the third elastic member, the focus gear 131 moves again and separates from the transmission gear 33 until the forces of the second elastic member and the third elastic member on the focus gear 131 return to a balanced state.

[0060] See also Figure 1In order to dissipate heat well for the sensor board 2, the focusing device of this embodiment further includes a heat dissipation sheet metal 6 and a graphite heat sink 7. The sensor board 2, the heat dissipation sheet metal 6 and the graphite heat sink 7 are arranged in sequence in the first direction. The heat dissipation sheet metal 6 is installed on the side of the sensor board 2 away from the camera front cover 1, and the graphite heat sink 7 is installed on the side of the heat dissipation sheet metal 6 away from the sensor board 2. A heat conductive gel is coated between the heat dissipation sheet metal 6 and the sensor board 2. The heat conductive gel is in the form of toothpaste and has good thermal conductivity and ductility, thereby reducing the stress of the heat dissipation sheet metal 6 on the sensor board 2 and reducing the occurrence of defocus.

[0061] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0062] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A focusing device, characterized in that: include: Camera front cover (1); A sensor plate (2) arranged opposite to the camera front cover (1) in a first direction; A first bracket (3) is rotatably arranged on the camera front cover (1) around a first axis, and the first bracket (3) is positioned on the camera front cover (1) in a first direction, and an abutment member (31) is arranged on the first bracket (3); A second bracket (4), the sensor plate (2) being mounted on the second bracket (4), the second bracket (4) being provided with a guide surface (41) extending circumferentially along the first axis; A first elastic member (5) used for pressing the second bracket (4) toward the camera front cover (1); a heat dissipation sheet metal (6) mounted on a side of the sensor plate (2) facing away from the camera front cover (1), with heat-conducting gel coated between the heat dissipation sheet metal (6) and the sensor plate (2); and A graphite heat sink (7) mounted on a side of the heat dissipation sheet metal (6) facing away from the sensor plate (2); The abutment member (31) is pressed against the guide surface (41) so that the second bracket (4) can move relative to the camera front cover (1) along a first direction during the rotation of the first bracket (3).

2. The focusing device according to claim 1, characterized in that: The first bracket (3) is provided with a positioning hole (32), the abutment member (31) is a ball bearing, and the abutment member (31) is rollingly arranged at the positioning hole (32).

3. The focusing device according to claim 2, characterized in that: A portion of the abutment member (31) is located outside the positioning hole (32), and the portion of the abutment member (31) outside the positioning hole (32) is pressed on the guide surface (41) so that the first bracket (3) and the second bracket (4) are spaced apart.

4. The focusing device according to claim 3, characterized in that: The first bracket (3) is provided with a positioning hole (32), the abutment member (31) is installed at the positioning hole (32), and the positioning hole (32) is a through hole to allow the abutment member (31) to be pressed on the camera front cover (1).

5. The focusing device according to claim 4, characterized in that: An elastic gasket (12) is provided between the camera front cover (1) and the abutment member (31).

6. The focusing device according to claim 1, characterized in that: The extension direction of the first axis is parallel to the first direction, and the guide surface (41) extends in a circumferential spiral along the first axis.

7. The focusing device according to claim 1, characterized in that: A first screw (11) is threadedly connected to the camera front cover (1), the first screw (11) passes through the second bracket (4), and two ends of the first elastic member (5) are respectively abutted against the second bracket (4) and the nut of the first screw (11).

8. The focusing device according to claim 1, characterized in that: The camera front cover (1) is provided with a guide column extending along a first direction, the second bracket (4) is provided with a guide hole, and the guide column is inserted into the guide hole.

9. The focusing device according to claim 1, characterized in that: The camera front cover (1) is provided with a rotating shaft (13), the rotating shaft (13) is provided with a focus gear (131) and a pressure plate (132), the focus gear (131) is located between the camera front cover (1) and the pressure plate (132), a second elastic member is provided between the camera front cover (1) and the focus gear (131), a third elastic member is provided between the pressure plate (132) and the focus gear (131), and the first bracket (3) is provided with a transmission tooth (33).

10. A photographing device, characterized in that: It comprises the focusing device as claimed in any one of claims 1 to 9.

Images