camera device

Abstract

The application provides a camera device, comprising: a first housing; a second lens module hung on a side wall of the first housing and driven to rotate around a second axis extending in a horizontal direction by a first driving motor, a second housing of the second lens module being arranged on a support seat protruding from the side wall of the first housing through a rotating pair, and a first driving assembly being arranged in the second housing; and a brake module, comprising: a second driving motor arranged in the second housing, an output shaft of the second driving motor penetrating the second housing along the direction of the second axis; and a brake disc assembly reciprocally moving along the direction of the second axis under the drive of the output shaft; the second housing and the support seat form a gap spaced along the direction of the second axis, and in response to a brake instruction and / or a stop signal of the first motor, the brake module is configured to drive the brake disc assembly to contact and abut against the support seat along the direction of the second axis, so that the second lens module is relatively stationary with the first housing.

Description

Technical Field

[0001] This invention relates to a camera device. Background Technology

[0002] In camera devices with rotating components, gear backlash can cause a small angular shift in the lens. However, in actual imaging, this small angular shift can lead to significant deviations in the angle or position of the image.

[0003] For example, combining Figure 1 As shown in Table 1, with a hanging height of 5.8m and an angular deviation caused by a tooth gap of 0.1°, the observation distance deviation is 1.89m when the observation distance is 80m; 3.11m when the observation distance is 100m; and 12.82m when the observation distance is 200m.

[0004] Table 1

[0005] Summary of the Invention

[0006] To address the above technical problems, the present invention provides a camera device that includes a braking module in a rotating component, which can fix the relative position between the rotating component and the stationary component when the rotating component stops rotating, thereby avoiding positional deviation of the rotating component due to gear backlash.

[0007] One embodiment of the present invention provides a camera device, comprising:

[0008] A first housing, the first housing defining a first axis extending in a longitudinal direction;

[0009] The second lens module is mounted on the side wall of the first housing and rotates in pitch around a second axis extending in the horizontal direction under the drive of the first drive motor. The second housing of the second lens module is mounted on a support protruding from the side wall of the first housing via a rotating joint. The first drive assembly is installed inside the second housing.

[0010] Braking module, the braking module comprising:

[0011] A second drive motor is installed inside the second housing, and the output shaft of the second drive motor passes through the second housing along the direction of the second axis; and

[0012] A brake disc assembly, which is mounted on the end of the output shaft, and reciprocates along the direction of the second axis under the drive of the output shaft;

[0013] The second housing and the support base form a gap spaced along the second axis, and the brake disc assembly is located within this gap.

[0014] In response to a braking command and / or a stop signal from the first motor, the braking module is configured to drive the brake disc assembly to engage with the support along the second axis direction, so that the second lens module is stationary relative to the first housing.

[0015] In one embodiment, the second housing includes a first sidewall and a second sidewall disposed opposite to each other. The first sidewall is rotatably connected to the support base via a first revolute joint, and the second sidewall is rotatably connected to the support base via a second revolute joint. The first revolute joint and the second revolute joint define the second axis.

[0016] The first drive motor is located adjacent to the first sidewall to drive the second lens module to pitch around the second axis via the first rotary joint;

[0017] The second drive motor is adjacent to the second sidewall, and the output shaft of the second drive motor passes through the second sidewall.

[0018] In one embodiment, the second lens module includes:

[0019] A support plate is connected from the outside of the second housing between the first sidewall and the second sidewall to balance the second housing.

[0020] In one embodiment, the brake disc assembly includes:

[0021] A push rod, the push rod being mounted at the end of the output shaft; and

[0022] Brake disc, wherein the brake disc is integrally connected to the support base;

[0023] The push rod includes:

[0024] A first rod portion is mounted at the end of the output shaft and penetrates the second housing;

[0025] The second rod extends radially outward from the end of the first rod and is used to contact the brake disc so that the second lens module is relatively stationary with respect to the first housing.

[0026] In one embodiment, the second housing has a shaft hole through which the output shaft passes;

[0027] The brake disc assembly includes a bushing sleeved on the outside of the first rod portion, the bushing being held between the first rod portion and the shaft hole;

[0028] Wherein, the diameter of the shaft hole is larger than the diameter of the first rod portion, and the bushing is interference-fitted with the shaft hole;

[0029] One end of the bushing forms a stepped portion that is axially confined to the outer surface of the second housing.

[0030] In one embodiment, the brake disc assembly includes:

[0031] A first sealing ring is fitted over the outside of the first rod portion and is positioned between the stepped portion and the second rod portion to seal the shaft hole.

[0032] In one embodiment, the brake disc assembly includes:

[0033] The second sealing ring is sleeved on the outside of the first rod portion and is located between the bushing and the first rod portion;

[0034] The first rod portion has a sealing groove for accommodating the second sealing ring.

[0035] In one embodiment, the first rod is threadedly connected to the end of the output shaft, and the output shaft rotates under the drive of the second drive motor;

[0036] The brake disc assembly includes:

[0037] A guide rod is connected between the second housing and the second rod portion and extends along the second axis direction to limit the push rod to move linearly along the second axis direction under the drive of the output shaft.

[0038] In one embodiment, the first end of the guide rod is fixed to the second housing, and the second end passes through the second rod portion.

[0039] In one embodiment, in the longitudinal direction, the first drive motor and the second drive motor are respectively located on both sides of the second axis.

[0040] The height of the first drive motor is higher than that of the second axis, and the height of the second drive motor is lower than that of the second axis.

[0041] In one embodiment, the second lens module includes:

[0042] A lens, which is mounted inside the second housing and captures images via the front surface of the second housing, wherein the height of the lens is higher than the second axis in the longitudinal direction;

[0043] A radar module is installed inside the second housing and captures images via the front surface of the second housing. In the longitudinal direction, the height of the radar module is lower than the second axis. Attached Figure Description

[0044] The following figures are for illustrative purposes only and do not limit the scope of the invention.

[0045] Figure 1 This is a schematic diagram illustrating the imaging deviation caused by backlash in existing camera devices.

[0046] Figure 2 This is a schematic diagram of the camera device of the present invention.

[0047] Figure 3a and Figure 3b This is a schematic diagram of the braking module of the camera device of the present invention.

[0048] Figure 4 This is a partially exploded view of the camera device of the present invention.

[0049] Figure 5 This is a partial cross-sectional view of the camera device of the present invention. Detailed Implementation

[0050] To provide a clearer understanding of the technical features, objectives, and effects of the invention, specific embodiments of the invention are now described with reference to the accompanying drawings, in which the same reference numerals denote the same parts.

[0051] In this document, “illustrative” means “serving as an example, illustration or description”, and any illustration or implementation described herein as “illustrative” should not be construed as a more preferred or advantageous technical solution.

[0052] To keep the drawings concise, only the parts relevant to the invention are shown in each figure, and do not represent the actual structure of the product. Furthermore, to facilitate understanding, in some figures, only one of the components with the same structure or function is shown schematically, or only one is labeled.

[0053] In this article, terms such as "up," "down," "front," "back," "left," and "right" are used only to indicate the relative positional relationship between related parts, rather than to define the absolute position of these related parts.

[0054] In this article, "first," "second," etc., are used only to distinguish one another, and not to indicate degree of importance, order, or prerequisite for each other.

[0055] In this document, terms such as "equal" and "same" are not strict mathematical and / or geometric limitations, but also include errors that are understandable to those skilled in the art and permissible in manufacturing or use. Unless otherwise stated, numerical ranges in this document include not only the entire range within its two endpoints, but also several subranges contained therein.

[0056] The exemplary embodiments will now be described more fully with reference to the accompanying drawings.

[0057] To address the problems in the prior art, the present invention provides a camera device that includes a braking module in a rotating component, which can fix the relative position between the rotating component and the stationary component when the rotating component stops rotating, thereby avoiding positional deviation of the rotating component due to gear backlash.

[0058] Figure 2 This is a schematic diagram of the camera device of the present invention. Figure 3a and Figure 3b This is a schematic diagram showing the state of the braking module of the camera device of the present invention. Figure 2 and Figure 3a As shown, one embodiment of the present invention provides a camera device, including:

[0059] A first housing 10 defines a first axis L1 extending in a longitudinal direction;

[0060] The second lens module 20 is mounted on the side wall of the first housing 10 and rotates in pitch around the second axis L2 extending in the horizontal direction under the drive of the first drive motor 30. The second housing 21 of the second lens module 20 is mounted on the support seat 11 protruding from the side wall of the first housing 10 through the rotating joint 22. The first drive assembly 30 is installed inside the second housing 21.

[0061] Braking module 40, the braking module 40 includes:

[0062] The second drive motor 41 is installed inside the second housing 21, and its output shaft 41a passes through the second housing 21 in a direction parallel to the second axis L2; ​​and

[0063] Brake disc assembly 42 is mounted on the end of output shaft 41a and reciprocates along the direction of the second axis L2 under the drive of output shaft 41a.

[0064] The second housing 21 and the support base 11 form a gap along the second axis L2, and the brake disc assembly 42 is located within this gap.

[0065] In response to a braking command and / or a stop signal from the first motor 30, the braking module 40 is configured to drive the brake disc assembly 42 to engage with the support base 11 along the second axis L2, so that the second lens module 20 is stationary relative to the first housing 10.

[0066] In this embodiment, the camera device can be implemented as a PTZ camera with a rotating camera lens. The first housing 10 is implemented as the main body for mounting the PTZ camera and the camera lens, and it is fixed to the carrier, typically defined as a fixing member. The second lens module 20 is implemented as the camera lens mounted on the first housing 10, and it can tilt and rotate relative to the first housing 10. Furthermore, the first housing 10 can also be equipped with a PTZ camera fixed relative to the first housing 10.

[0067] The second lens module 20 is driven by the first drive assembly 30 and rotates around the second axis L2 with the rotary joint 22 as support. The transmission between the first drive assembly 30 and the rotary joint 22 is a gear transmission. When the first drive assembly 30 stops to allow the second lens module 20 to remain at a certain angle, the gear clearance may cause the second lens module 20 to wobble within a range equal to the gear clearance at the resting position. Although the absolute value of the gear clearance is small, under the weighting of parameters such as lens magnification and shooting distance, it may cause a very large positional deviation of the second lens module 20 during actual imaging.

[0068] To address this issue, this embodiment provides a braking module 40 for the second lens module 20, which is used to fix the relative position of the rotatable component (second lens module 20) relative to the fixed component (first housing 10), so that when the first drive assembly 30 stops, the second lens module 20 and the first housing 10 remain relatively stationary, thereby eliminating the shaking of the second lens assembly 20 at the stationary position caused by gear backlash.

[0069] The braking module 40 is positioned away from the rotating joint 22 so that it can apply a larger braking torque to the first housing 10 with a smaller braking force, which is beneficial for fixing the position of the second lens module 20 and reducing the volume occupied by the braking module 40.

[0070] In this embodiment, the braking module 40 includes a second drive motor 41 and a brake disc assembly 42 driven by the second drive motor 41, wherein the brake disc assembly 42 moves linearly along the direction of the second axis L2 to achieve the following: Figure 3a When it is in contact with the support base 11, it is connected between the second housing 21 and the support base 11, so that the second housing 21 and the first housing 10 are relatively stationary, thereby achieving the purpose of keeping the second lens module 20 and the first housing 10 relatively stationary.

[0071] In this embodiment, although the brake disc assembly 42 moves linearly along the direction of the second axis L2 under the drive of the output shaft 41a of the second drive motor 41, the second drive motor 41 is not limited to a linear motor, and the output shaft 41a is not limited to moving linearly along the direction of the second axis L2. The second drive motor 41 can be selected as a linear motor or a rotary motor, and the movement mode of the brake disc assembly 42 can be limited by the connection structure between the brake disc assembly 42 and the output shaft 41a.

[0072] As described above, the brake disc assembly 42 moves linearly along the direction of the second axis L2, so as... Figure 3a When it is in contact with the support base 11, it is connected between the second housing 21 and the support base 11, so that the second housing 21 and the first housing 10 are relatively stationary, thereby achieving the purpose of keeping the second lens module 20 relatively stationary with respect to the first housing 10. Or as shown in Figure 3b When the second housing 21 is disengaged from the support base 11, the positional relationship between the second housing 21 and the support base 11 is released, thereby releasing the lock between the second lens module 20 and the first housing 10, so that the second lens module 20 can be tilted and rotated relative to the first housing 10 under the drive of the first drive motor 30.

[0073] In this embodiment, the braking module 40 is used to eliminate errors caused by backlash in the transmission structure when it is stationary. Therefore, the first drive motor 31 and the second drive motor 41 do not operate simultaneously. The second drive motor 41 can be started in response to a stop signal from the first drive motor 31 or a braking command issued by the user or controller. When the second drive motor 41 starts in response to a braking command, the first drive motor 31 is always in a stopped state. Conversely, the first drive motor 31 can also be started in response to a stop signal from the second drive motor 41 or a start command issued by the user or controller. When the first drive motor 31 starts in response to a start command, the second drive motor 41 is always in a stopped state.

[0074] Specifically, such as Figure 2 and Figure 4 As shown, the second housing 21 includes a first sidewall 21a and a second sidewall 21b disposed opposite to each other. The first sidewall 21a is rotatably connected to the support base 11 through a first rotating joint 22a, and the second sidewall 21b is rotatably connected to the support base 11 through a second rotating joint 22b. The first rotating joint 22a and the second rotating joint 22b define the second axis L2.

[0075] The first drive motor 30 is located near the first sidewall 21a to drive the second lens module 20 to pitch and rotate around the second axis L2 via the first rotary joint 22a.

[0076] The second drive motor 41 is adjacent to the second sidewall 21b, and the output shaft 41a of the second drive motor 41 passes through the second sidewall 21b.

[0077] In this example, the first drive motor 30 for driving the first housing 21 to pitch relative to the first housing 10 is selectively connected to a revolute 22, such as the first revolute 22a located on the first sidewall 21a. The braking module 40 for fixing the position of the first housing 21 relative to the first housing 10 is provided at another revolute 22, such as the second revolute 22b located on the second sidewall 21b, so as to brake the first housing 21 from the second sidewall 21b side.

[0078] The height of the first drive motor 30 is higher than that of the second axis L2, and the height of the second drive motor 41 is lower than that of the second axis L2.

[0079] Specifically, the second lens module 20 includes:

[0080] Lens 24 is installed inside the second housing 21 and takes pictures through the front surface of the second housing 21. In the longitudinal direction, the height of lens 24 is higher than the second axis L2.

[0081] The radar module 25 is installed inside the second housing 21 and captures images through the front surface of the second housing 21. In the longitudinal direction, the height of the radar module 25 is lower than the second axis L2.

[0082] Preferably, the second lens module 20 includes:

[0083] Support plate 23 is connected from the outside of the second housing 21 between the first sidewall 21a and the second sidewall 21b to balance the second housing 21.

[0084] Since both the first drive motor 31 and the second drive motor 41 drive structures disposed on one side wall of the second housing 21, in order to increase the stability of unilateral force application, this embodiment provides a support plate 23. The support plate 23 is formed to connect the first side wall 21a and the second side wall 21b, thereby forming a force transmission structure between the first side wall 21a and the second side wall 21b. Preferably, the support plate 23 is formed on the outside of the second housing 21 and may be located at the bottom of the second housing 21 to provide support and protection for the second housing 21.

[0085] like Figure 4 As shown, the brake disc assembly 42 includes:

[0086] Push rod 421, push rod 421 is mounted at the end of output shaft 41a; and

[0087] Brake disc 422, the brake disc 422 is integrated with the support base 11;

[0088] The pusher 421 includes:

[0089] The first rod portion 4211 is mounted at the end of the output shaft 41a and penetrates the second housing 21;

[0090] The second rod portion 4212 extends radially outward from the end of the first rod portion 4211. The second rod portion 4212 is used to fit and contact the brake disc 422 so that the second lens module 20 is relatively stationary with respect to the first housing 10.

[0091] In this embodiment, both the first rod portion 4211 and the output shaft 41a penetrate the second housing 21, specifically, they penetrate the second sidewall 21b of the second housing 21. Therefore, the first rod portion 4211 and the second housing 21 have a relatively movable positional relationship. Based on the usage environment of the camera device in this embodiment, a dynamic sealing structure needs to be provided at the position of the first rod portion 4211.

[0092] In one embodiment, the second housing 21 has a shaft hole through which the output shaft 41a and the first rod portion 4211 pass;

[0093] Brake disc assembly 42 includes a bushing 423 sleeved on the outside of the first rod portion 4211, the bushing 423 being held between the first rod portion 4211 and the shaft hole;

[0094] The diameter of the shaft hole is larger than the diameter of the first rod portion 4211, and the bushing 423 is interference-fitted with the shaft hole.

[0095] In this embodiment, the bushing 423 is fixed relative to the shaft hole by an interference fit, while the first rod portion 4211 is movable relative to the bushing 423, that is, there is a gap between the outer surface of the first rod portion 4211 and the inner surface of the bushing 423.

[0096] One end of the bushing 423 forms a radially outwardly extending stepped portion 4231 to axially confine the bushing 423 to the outer surface of the second housing 21. The stepped portion 4231 fits against the outer surface of the second housing 21, thereby forming a seal between the second housing 21 and the bushing 423.

[0097] Furthermore, the brake disc assembly 42 includes:

[0098] The first sealing ring 424 is sleeved on the outside of the first rod portion 4211 and is limited between the stepped portion 4231 and the second rod portion 4212 to seal the shaft hole.

[0099] Depend on Figure 5As can be seen, the first sealing ring 424 seals between the step portion 4231 and the second rod portion 4212 from the outside of the second housing 21. It always seals between the step portion 4231 and the second rod portion 4212 when the push rod 421 moves linearly along the direction of the second axis L2, so as to seal the gap between the outer surface of the first rod portion 4211 and the inner surface of the bushing 423 from the outer end (step portion 4231) of the bushing 423.

[0100] Furthermore, the brake disc assembly 42 includes:

[0101] The second sealing ring 425 is sleeved on the outside of the first rod portion 4211 and is located between the bushing 423 and the first rod portion 4211;

[0102] The first rod portion 4211 has a sealing groove 4213 for accommodating the second sealing ring 425.

[0103] The sealing groove 4213 is used to accommodate the second sealing ring 425, but the depth of the sealing groove 4213 is less than the thickness of the second sealing ring 425, so that the second sealing ring 425 can protrude from the outer surface of the first rod portion 4211, thereby filling the gap between the outer surface of the first rod portion 4211 and the inner surface of the bushing 423. When the push rod 421 slides relative to the bushing 423, the second sealing ring 425 is confined within the sealing groove 4213 to always seal the gap between the outer surface of the first rod portion 4211 and the inner surface of the bushing 423 from the inside of the bushing 423.

[0104] In a preferred embodiment, such as Figure 5 As shown, the first rod portion 4211 is threadedly connected to the end of the output shaft 41a, and the output shaft 41a rotates under the drive of the second drive motor 41.

[0105] Brake disc assembly 42 includes:

[0106] Guide rod 426 is connected between the second housing 21 and the second rod portion 4212 and extends along the second axis L2 to limit push rod 421 to move linearly along the second axis L2 under the drive of output shaft 41a.

[0107] In this embodiment, the second drive motor 41 can be selected as a common motor that outputs rotational power. The first rod 4211 is threadedly connected to the end of the output shaft 41a. By using a guide rod 426 that restricts the second rod 4212 from rotating with the output shaft 41a in the circumferential direction, the second rod 4212 can be made not to rotate with the output shaft 41a, but to move linearly along the extension direction of the output shaft 41a by being threaded into or out of the end of the output shaft 41a.

[0108] The first end of the guide rod 426 is fixed to the second housing 21, and the second end passes through the second rod portion 4212. The guide rod 426 not only restricts the rotation of the second rod portion 4212 in the circumferential direction, but also guides the movement direction of the second rod portion 4212.

[0109] Within the second housing 21, in the longitudinal direction, the first drive motor 30 and the second drive motor 41 are respectively located on both sides of the second axis L2.

[0110] This embodiment provides a structure that enables linear movement of the push rod using a rotary motor. However, this embodiment is not limited to this; structures that enable linear movement using pneumatic push rods, hydraulic push rods, etc., can also be employed.

[0111] As can be seen from the above technical solutions, this embodiment provides a braking module 40 for the second lens module 20, which is used to fix the relative position of the rotatable part (second lens module 20) relative to the fixed part (first housing 10), so that when the first drive component 30 stops, the second lens module 20 and the first housing 10 are relatively stationary, thereby eliminating the shaking of the second lens component 20 at the stationary position caused by gear backlash.

[0112] The first sealing ring 424 seals the space between the step portion 4231 and the second rod portion 4212 from the outside of the second housing 21. It remains sealed between the step portion 4231 and the second rod portion 4212 as the push rod 421 moves linearly along the direction of the second axis L2, so as to seal the gap between the outer surface of the first rod portion 4211 and the inner surface of the bushing 423 from the outer end (step portion 4231) of the bushing 423.

[0113] The sealing groove 4213 is used to accommodate the second sealing ring 425, but the depth of the sealing groove 4213 is less than the thickness of the second sealing ring 425, so that the second sealing ring 425 can protrude from the outer surface of the first rod portion 4211, thereby filling the gap between the outer surface of the first rod portion 4211 and the inner surface of the bushing 423. When the push rod 421 slides relative to the bushing 423, the second sealing ring 425 is confined within the sealing groove 4213 to always seal the gap between the outer surface of the first rod portion 4211 and the inner surface of the bushing 423 from the inside of the bushing 423.

[0114] The detailed descriptions listed above are merely specific descriptions of feasible embodiments of the present invention and are not intended to limit the scope of protection of the present invention. All equivalent implementation schemes or modifications made without departing from the spirit of the present invention, such as combinations, divisions or repetitions of features, should be included within the scope of protection of the present invention.

Claims

1. A camera device, characterized in that, include: A first housing (10) defines a first axis (L1) extending in the longitudinal direction. The second lens module (20) is mounted on the side wall of the first housing (10) and rotates in pitch around the second axis (L2) extending in the horizontal direction under the drive of the first drive motor (30). The second housing (21) of the second lens module (20) is mounted on the support seat (11) protruding from the side wall of the first housing (10) through a rotating joint (22). The first drive motor (30) is installed inside the second housing (21). Braking module (40), the braking module (40) includes: A second drive motor (41) is installed inside the second housing (21), and the output shaft (41a) of the second drive motor (41) passes through the second housing (21) along the direction of the second axis (L2); and Brake disc assembly (42), which is mounted on the end of the output shaft (41a) and reciprocates along the direction of the second axis (L2) under the drive of the output shaft (41a); The second housing (21) and the support base (11) form a gap spaced along the second axis (L2), and the brake disc assembly (42) is located within the gap; In response to a braking command and / or a stop signal from the first drive motor (30), the braking module (40) is configured to drive the brake disc assembly (42) to engage with the support base (11) along the second axis (L2) so that the second lens module (20) is stationary relative to the first housing (10).

2. The camera device according to claim 1, characterized in that, The second housing (21) includes a first sidewall (21a) and a second sidewall (21b) disposed opposite to each other. The first sidewall (21a) is rotatably connected to the support base (11) via a first rotating joint (22a), and the second sidewall (21b) is rotatably connected to the support base (11) via a second rotating joint (22b). The first rotating joint (22a) and the second rotating joint (22b) define the second axis (L2). The first drive motor (30) is adjacent to the first sidewall (21a) to drive the second lens module (20) to pitch around the second axis (L2) via the first rotary joint (22a); The second drive motor (41) is adjacent to the second sidewall (21b), and the output shaft (41a) of the second drive motor (41) passes through the second sidewall (21b).

3. The camera device according to claim 2, characterized in that, The second lens module (20) includes: A support plate (23) is connected from the outside of the second housing (21) between the first sidewall (21a) and the second sidewall (21b) to balance the second housing (21).

4. The camera device according to claim 1, characterized in that, The brake disc assembly (42) includes: A push rod (421), said push rod (421) being mounted at the end of the output shaft (41a); and Brake disc (422), the brake disc (422) and the support base (11) are connected as one unit; The push rod (421) includes: The first rod portion (4211) is mounted on the end of the output shaft (41a) and penetrates the second housing (21). The second rod (4212) extends radially outward from the end of the first rod (4211) and is used to fit and contact the brake disc (422) so that the second lens module (20) is relatively stationary with respect to the first housing (10).

5. The camera device according to claim 4, characterized in that, The second housing (21) has a shaft hole through which the output shaft (41a) passes; The brake disc assembly (42) includes a bushing (423) sleeved on the outside of the first rod portion (4211), the bushing (423) being held between the first rod portion (4211) and the shaft hole; Wherein, the diameter of the shaft hole is larger than the diameter of the first rod portion (4211), and the bushing (423) is interference-fitted with the shaft hole; One end of the bushing (423) forms a stepped portion (4231) that is axially confined to the outer surface of the second housing (21).

6. The camera device according to claim 5, characterized in that, The brake disc assembly (42) includes: The first sealing ring (424) is sleeved on the outside of the first rod portion (4211) and is located between the stepped portion (4231) and the second rod portion (4212) to seal the shaft hole.

7. The camera device according to claim 5, characterized in that, The brake disc assembly (42) includes: The second sealing ring (425) is sleeved on the outside of the first rod portion (4211) and located between the bushing (423) and the first rod portion (4211); The first rod portion (4211) has a sealing groove (4213) for accommodating the second sealing ring (425).

8. The camera device according to claim 4, characterized in that, The first rod portion (4211) is threadedly connected to the end of the output shaft (41a), and the output shaft (41a) rotates under the drive of the second drive motor (41); The brake disc assembly (42) includes: A guide rod (426) is connected between the second housing (21) and the second rod portion (4212) and extends along the second axis (L2) to limit the push rod (421) to move linearly along the second axis (L2) under the drive of the output shaft (41a).

9. The camera device according to claim 8, characterized in that, The first end of the guide rod (426) is fixed to the second housing (21), and the second end passes through the second rod portion (4212).

10. The camera device according to claim 1, characterized in that, In the longitudinal direction, the first drive motor (30) and the second drive motor (41) are located on both sides of the second axis (L2), respectively. The height of the first drive motor (30) is higher than that of the second axis (L2), and the height of the second drive motor (41) is lower than that of the second axis (L2).

11. The camera device according to claim 1, characterized in that, The second lens module (20) includes: The lens (24) is installed inside the second housing (21) and takes pictures through the front surface of the second housing (21). In the longitudinal direction, the height of the lens (24) is higher than the second axis (L2). The radar module (25) is installed inside the second housing (21) and takes pictures via the front surface of the second housing (21). In the longitudinal direction, the height of the radar module (25) is lower than the second axis (L2).

Images