A multi-degree-of-freedom adjustable lens structure for a DMS camera

Abstract

The utility model relates to a kind of adjustable lens structure of multiple degrees of freedom for DMS camera, including camera body, support, rectangular frame and damping part, the support is fixedly installed in camera body bottom, the rod body is fixedly installed in support, the rod body is rotatably installed in rectangular frame, the damping part is installed in rectangular frame, for rod body is limited after rotation;The damping part includes gear ring, tooth frame and first spring, when needing to adjust camera to lift head or bow, rotate camera can drive support and rod body rotate, and the gear ring on the surface of rod body will rotate, because gear ring and tooth frame are engaged, to extrude tooth frame to move on push plate, and extrude first spring, first spring provides damping force, when long time use first spring spring constant reduces, manually rotate knob part, adjust rod follows rotation, because adjust rod and screw hole are threadedly installed, to control push plate extrusion second spring, improve damping force.

Description

Technical Field

[0001] This utility model relates to the field of DMS camera technology, specifically to a multi-degree-of-freedom adjustable lens structure for a DMS camera. Background Technology

[0002] The stability of the angle adjustment of the Driver Monitoring System (DMS) camera directly determines the monitoring accuracy. Currently, most non-electrically adjustable DMS cameras rely on damping structures to achieve angle limiting support. The adjusted lens angle is fixed by the friction or meshing force between the damping element and the rotating component. Due to the weight of the camera itself and the movement of the vehicle, the camera is prone to vertical movement. This results in insufficient damping force for vertical rotation adjustment, making it impossible to limit the angle adjustment. Consequently, the lens cannot accurately align with the driver's face, leading to blind spots or misjudgments in the DMS system. Therefore, we need to provide a multi-degree-of-freedom adjustable lens structure for DMS cameras. Utility Model Content

[0003] The purpose of this invention is to provide a multi-degree-of-freedom adjustable lens structure for a DMS camera. A damping element is set within a rectangular frame to adjust the resistance to the rotation of the camera body. As the resistance decreases with prolonged use, the damping element can compress the first spring to increase the damping force, thus solving the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a multi-degree-of-freedom adjustable lens structure for a DMS camera, comprising:

[0005] The camera body comprises a bracket, a rectangular frame, and a damping component. The bracket is fixedly installed at the bottom of the camera body, and a rod is fixedly installed inside the bracket. The rod is rotatably installed inside the rectangular frame, and the damping component is installed inside the rectangular frame to limit the rotation of the rod.

[0006] The damping component includes a toothed ring, a toothed frame, and a first spring. The toothed ring is fixed to the surface of the rod. A push plate is provided inside the rectangular frame. A toothed frame is installed on one side of the push plate via the first spring. The teeth on the surface of the toothed frame mesh with the toothed ring. An adjusting component is provided on one side of the rectangular frame.

[0007] Preferably, the adjusting component includes a threaded hole and an adjusting rod. The adjusting rod is rotatably mounted inside the rectangular frame. A threaded hole for threaded installation of the adjusting rod is provided on one side of the push plate, and a knob is provided at one end of the adjusting rod.

[0008] Preferably, guide rails are slidably mounted on both sides of the push plate, and both guide rails are fixed to the inner wall of the rectangular frame.

[0009] Preferably, a disc is fixedly installed at the bottom of the rectangular frame, and a base is slidably installed at the bottom of the disc, with multiple slots provided on the inner wall of the base.

[0010] Preferably, the disc body is provided with an abutment member that cooperates with the slot. The abutment member includes a groove, an abutment rod, and a second spring. The groove is opened in the disc body, and the abutment rod is slidably installed inside. The second spring is provided between the abutment rod and the inner wall of the groove. One end of the abutment rod is engaged with the slot.

[0011] Preferably, the end of the abutment rod that contacts the slot is hemispherical.

[0012] Preferably, a limiting plate is fixedly installed at the bottom of the disc body, and a circular groove adapted to the limiting plate is provided in the base.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This invention incorporates a damping component within a rectangular frame, which adjusts the resistance to the rotation of the camera body. As the resistance decreases with prolonged use, the damping component can compress the first spring, increasing the damping force. This eliminates the need to replace components, effectively extending the service life of the damping structure and preventing the camera from shifting at an angle due to insufficient resistance, thus ensuring the monitoring accuracy of the DMS system. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0016] Figure 2 This is a three-dimensional sectional view of the rectangular frame of this utility model;

[0017] Figure 3 This is a perspective view of the damping component of this utility model;

[0018] Figure 4 This is a perspective view of the contact element of this utility model.

[0019] In the diagram: 1. Camera body; 2. Bracket; 3. Rectangular frame; 4. Damping component; 41. Toothed ring; 42. Toothed frame; 43. First spring; 5. Rod; 6. Push plate; 7. Adjusting component; 71. Threaded hole; 72. Adjusting rod; 8. Guide rail plate; 9. Disc; 10. Base; 11. Slot; 12. Abutting component; 121. Groove; 122. Abutting rod; 123. Second spring; 13. Limiting disc; 14. Circular groove. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-4 This utility model provides a technical solution: a multi-degree-of-freedom adjustable lens structure for a DMS camera, comprising:

[0022] The camera body 1, bracket 2, rectangular frame 3 and damping component 4 are provided. The bracket 2 is fixedly installed at the bottom of the camera body 1. The rod 5 is fixedly installed inside the bracket 2. The rod 5 is rotatably installed inside the rectangular frame 3. The damping component 4 is installed inside the rectangular frame 3 and is used to limit the rotation of the rod 5.

[0023] The damping component 4 includes a toothed ring 41, a toothed frame 42 and a first spring 43. The toothed ring 41 is fixed on the surface of the rod body 5. A push plate 6 is provided inside the rectangular frame 3. The toothed frame 42 is installed on one side of the push plate 6 through the first spring 43. The teeth on the surface of the toothed frame 42 mesh with the toothed ring 41. An adjusting component 7 is provided on one side of the rectangular frame 3.

[0024] Specifically, the damping component 4 is set within the rectangular frame 3, which can adjust the resistance to the rotation of the camera body 1. As the resistance decreases with prolonged use, the damping component 4 can compress the first spring 43 to increase the damping force. There is no need to replace the components, which effectively extends the service life of the damping structure and prevents the camera from shifting at an angle due to insufficient resistance, thus ensuring the monitoring accuracy of the DMS system. The adjustment process only requires mechanical operation and does not rely on the vehicle power supply or additional power device. It can still be used normally in scenarios such as vehicle power failure and circuit failure, and is suitable for various complex vehicle environments.

[0025] The adjusting component 7 includes a threaded hole 71 and an adjusting rod 72. The adjusting rod 72 is rotatably installed inside the rectangular frame 3. The push plate 6 has a threaded hole 71 on one side for threaded installation of the adjusting rod 72, and a knob is provided at one end of the adjusting rod 72.

[0026] Guide rails 8 are slidably installed on both sides of the push plate 6, and both guide rails 8 are fixed to the inner wall of the rectangular frame 3.

[0027] A plate 9 is fixedly installed at the bottom of the rectangular frame 3, and a base 10 is slidably installed at the bottom of the plate 9. The inner wall of the base 10 is provided with multiple slots 11.

[0028] The disc body 9 is provided with a contact member 12 that works with the slot 11. The contact member 12 includes a groove 121, a contact rod 122 and a second spring 123. The groove 121 is opened in the disc body 9 and the contact rod 122 is slidably installed inside it. The second spring 123 is provided between the contact rod 122 and the inner wall of the groove 121. One end of the contact rod 122 is engaged with the slot 11.

[0029] The end of the abutment rod 122 that contacts the slot 11 is set in a hemispherical shape.

[0030] A limiting plate 13 is fixedly installed at the bottom of the plate body 9, and a circular groove 14 adapted to the limiting plate 13 is provided in the base 10.

[0031] All threaded mounting surfaces in this application utilize a modified triangular thread with a self-locking function. The thread helix angle is designed to be 1.5°-2.5° to enhance the anti-loosening effect. After phosphating, the thread surface is coated with an 8-12μm Dacromet coating and impregnated with silicone sealant to form a sealing layer, resulting in excellent corrosion resistance. In addition, the thread can effectively expel dust, and it can still be used normally even if a small amount of dust adheres to it.

[0032] The base 10 of this device is installed inside the vehicle using 3M adhesive. First, the rectangular frame 3 is rotated horizontally, causing the chassis to rotate. Because the bottom limiting plate 13 of the chassis rotates within the circular groove 14, it prevents the chassis from detaching from the base 10. Since one end of the abutment rod 122 is hemispherical, as the chassis rotates, the abutment rod 122 continuously compresses the second spring 123 within the groove 121 until it is adjusted to a suitable position. Then, one end of the abutment rod 122 is locked in place within the slot 11. The second spring 123 has a relatively large elastic coefficient. Simultaneously, during vehicle operation, the horizontal force is relatively small, preventing the chassis from becoming dislodged. When manually adjusted, the camera rotates to adjust its tilt. Rotating the camera will cause the bracket 2 and the rod 5 to rotate, and the toothed ring 41 on the surface of the rod 5 will rotate. Since the toothed ring 41 meshes with the toothed frame 42, it will squeeze the toothed frame 42 to move on the push plate 6 and squeeze the first spring 43. The first spring 43 provides damping force. When the spring force coefficient of the first spring 43 decreases after long-term use, the knob can be manually rotated, and the adjusting rod 72 will rotate accordingly. Since the adjusting rod 72 is threaded into the threaded hole 71, it controls the push plate 6 to squeeze the second spring 123, thereby increasing the damping force.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-degree-of-freedom adjustable lens structure for a DMS camera, characterized in that, include: The camera body (1), bracket (2), rectangular frame (3) and damping component (4) are provided. The bracket (2) is fixedly installed at the bottom of the camera body (1). A rod (5) is fixedly installed inside the bracket (2). The rod (5) is rotatably installed inside the rectangular frame (3). The damping component (4) is installed inside the rectangular frame (3) and is used to limit the rotation of the rod (5). The damping component (4) includes a toothed ring (41), a toothed frame (42), and a first spring (43). The toothed ring (41) is fixed on the surface of the rod (5). A push plate (6) is provided inside the rectangular frame (3). The toothed frame (42) is installed on one side of the push plate (6) through the first spring (43). The teeth on the surface of the toothed frame (42) mesh with the toothed ring (41). An adjusting component (7) is provided on one side of the rectangular frame (3).

2. The multi-degree-of-freedom adjustable lens structure for a DMS camera according to claim 1, characterized in that: The adjusting component (7) includes a threaded hole (71) and an adjusting rod (72). The adjusting rod (72) is rotatably installed inside the rectangular frame (3). The push plate (6) has a threaded hole (71) on one side for threaded installation with the adjusting rod (72), and a knob is provided at one end of the adjusting rod (72).

3. The multi-degree-of-freedom adjustable lens structure for a DMS camera according to claim 2, characterized in that: The push plate (6) is slidably mounted on both sides of the guide rail plate (8), and both guide rail plates (8) are fixed to the inner wall of the rectangular frame (3).

4. The multi-degree-of-freedom adjustable lens structure for a DMS camera according to claim 1, characterized in that: The bottom of the rectangular frame (3) is fixedly installed with a disc body (9), and the bottom of the disc body (9) is slidably installed with a base (10). The inner wall of the base (10) is provided with multiple slots (11).

5. A multi-degree-of-freedom adjustable lens structure for a DMS camera according to claim 4, characterized in that: The disc body (9) is provided with an abutment (12) that works with the slot (11). The abutment (12) includes a groove (121), an abutment rod (122), and a second spring (123). The groove (121) is opened in the disc body (9), and the abutment rod (122) is slidably installed inside. The second spring (123) is provided between the abutment rod (122) and the inner wall of the groove (121). One end of the abutment rod (122) is engaged with the slot (11).

6. The multi-degree-of-freedom adjustable lens structure for a DMS camera according to claim 5, characterized in that: The end of the abutment rod (122) that contacts the slot (11) is set in a hemispherical shape.

7. A multi-degree-of-freedom adjustable lens structure for a DMS camera according to claim 4, characterized in that: The bottom of the disc body (9) is fixedly installed with a limiting disc (13), and the base (10) is provided with a circular groove (14) that is adapted to the limiting disc (13).

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