High-order video camera with fine-adjustable lens

Abstract

The utility model relates to a high-position video camera with a fine-adjustable lens. The high-position video camera comprises a fixed base and a camera module connected to the front end of the fixed base, the camera module is connected with the front end of the fixed base through a fine adjustment device, the fine adjustment device comprises three screw rod adjusting units, the three screw rod adjusting units are distributed in a regular triangle shape, one end of each screw rod adjusting unit is arranged in the fixed base, and the other end of each screw rod adjusting unit is arranged in the fixed base. The end, away from the fixed base, of the lead screw adjusting unit is hinged to the camera module through a ball head. The lead screw adjusting unit stretches out and draws back to achieve angle fine adjustment of the lens. According to the utility model, the angle adjustment principle of the lens is changed, the traditional direct angle adjustment is changed into indirect angle adjustment, the adjustment rod is driven by the screw rod sliding table module to stretch and retract to carry out fine adjustment on the posture of the camera assembly within a certain range, and the lens fine adjustment mode is relatively high in braking stability and is not easy to cause shaking and dislocation of the camera assembly.

Description

Technical Field

[0001] The utility model belongs to the technical field of video cameras, and relates to a high-position video camera, in particular to a high-position video camera with a lens that can be finely adjusted and has strong stability. Background Art

[0002] High-position video technology has now been widely applied in the field of intelligent parking toll collection. In the prior art, the lens of a high-position video camera is usually adjusted by adjusting the camera housing. Since the camera is installed at a high position and has a certain weight, it is difficult to adjust. In addition, there is also an adjustment method that uses a motor to drive the camera module to rotate in two directions. The problem with this adjustment method is that the motor is both a driving part and a part that provides braking. During the lens adjustment process, the shaking of the camera may cause the displacement of the camera module, and the device needs to be adjusted again.

[0003] In summary, the existing camera lens adjustment methods have defects such as complex installation and debugging and poor stability. Therefore, a high-position video camera that is convenient to adjust and has high adjustment stability is needed to solve the problems existing in the prior art. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a high-position video camera with a lens that can be finely adjusted and has high adjustment stability. The high-position video camera drives a regulating rod to stretch through a lead screw sliding table module to finely adjust the posture of the camera module within a certain range. Its braking stability is relatively high, and it is not easy to cause the shaking and displacement of the camera module, effectively solving the problems existing in the prior art.

[0005] The technical solution adopted by the utility model to achieve the above purpose is: a high-position video camera with a lens that can be finely adjusted, including a fixed base and a camera module connected to the front end of the fixed base; the camera module is connected to the front end of the fixed base through a fine adjustment device. The fine adjustment device includes three lead screw adjustment units, and the three lead screw adjustment units are distributed in an equilateral triangle. One end of the lead screw adjustment unit is arranged inside the fixed base, and the end of the lead screw adjustment unit far from the fixed base is hinged to the camera module through a ball head; the telescoping of the lead screw adjustment unit can realize the fine adjustment of the angle of the lens.

[0006] A further technical solution of the utility model is: the lead screw adjustment unit includes a regulating rod and a lead screw sliding table module. One end of the regulating rod is hinged to the camera module through a ball head. The end of the regulating rod far from the camera module passes through the housing of the fixed base and extends into the fixed base. The lead screw sliding table module is fixedly arranged inside the fixed base and corresponds to the position of the regulating rod. The slider of the lead screw sliding table module is connected to the corresponding regulating rod, and the motors of the lead screw sliding table module are electrically connected to the controller respectively.

[0007] A further technical solution of the present utility model is that a guide sleeve is provided at the position where the adjusting rod passes through the housing of the fixed base, and the adjusting rod passes through the corresponding guide sleeve and extends into the fixed base.

[0008] A further technical solution of the present utility model is that a tension spring is also connected between the fixed base and the camera module. One end of the tension spring is connected to the center of the rear end face of the camera module, and the end of the tension spring away from the camera module is connected to the center of the front end face of the fixed base.

[0009] Due to adopting the above structure, a high-position video camera with a fine-tunable lens of the present utility model has the following beneficial effects:

[0010] 1. The present utility model can control the movement of the slider of the corresponding lead screw slide table module through the controller, thereby driving the corresponding adjusting rod to expand and contract. When one of the adjusting rods expands and contracts, the camera module will make a slight rotation around the straight line formed by the hinge points of the other two adjusting rods, so as to realize the fine adjustment of the lens angle. By changing the lens angle adjustment principle, the present utility model changes from the traditional direct angle adjustment to indirect angle adjustment. The lead screw slide table module drives the adjusting rod to expand and contract to finely adjust the posture of the camera assembly within a certain range. This lens fine adjustment method has high braking stability and is not easy to cause the camera assembly to shake and lose its position.

[0011] 2. The present utility model is provided with a tension spring between the fixed base and the camera module. Since the adjusting rod and the camera module are connected by a ball head hinge, and there is a certain gap in the ball head hinge, the ball head gap will affect the accuracy and stability of the lens angle fine adjustment. Therefore, by applying a pre-tightening force to the fixed base and the camera module through the tension spring, the influence of the ball head gap on the accuracy and stability of the lens angle fine adjustment can be eliminated.

[0012] The following further describes a high-position video camera with a fine-tunable lens of the present utility model in conjunction with the drawings and embodiments. Description of the Drawings

[0013] Figure 1 is a schematic structural diagram of a high-position video camera with a fine-tunable lens of the present utility model;

[0014] Figure 2 is a schematic structural diagram of a high-position video camera with a fine-tunable lens of the present utility model in another direction;

[0015] Figure 3 is a schematic structural diagram of the connection between the adjusting rod, the tension spring and the camera module;

[0016] Figure 4 is a schematic structural diagram of the lead screw adjustment unit;

[0017] Description of the reference numerals in the drawings: 1 - fixed base, 2 - camera module, 3 - lead screw adjustment unit, 31 - adjustment rod, 32 - lead screw slide module, 321 - slider, 322 - motor, 4 - tension spring, 5 - guide sleeve. Detailed implementation manner

[0018] As Figures 1 to 4 shown, a high-position video camera with a fine-tunable lens according to the present invention includes a fixed base 1 and a camera module 2 connected to the front end of the fixed base 1. The camera module 2 is connected to the front end of the fixed base 1 through a fine-tuning device. The fine-tuning device of the present invention includes 3 lead screw adjustment units 3, and the 3 lead screw adjustment units 3 are distributed in an equilateral triangle. The center of the equilateral triangle is the center of the front end face of the fixed base 1. One end of the lead screw adjustment unit 3 is arranged in the fixed base 1, and the end of the lead screw adjustment unit 3 far from the fixed base 1 is connected to the camera module 2 through a ball joint.

[0019] As Figure 4 shown, the lead screw adjustment unit 3 of the present invention includes an adjustment rod 31 and a lead screw slide module 32. One end of the adjustment rod 31 is connected to the camera module 2 through a ball joint. The end of the adjustment rod 31 far from the camera module 2 passes through the housing of the fixed base 1 and extends into the fixed base 1. The lead screw slide module 32 is fixedly arranged in the fixed base 1 and corresponds to the position of the adjustment rod 31. The slider 321 of the lead screw slide module 32 is connected to the corresponding adjustment rod 31. The motors 322 of the lead screw slide module 32 are respectively electrically connected to the controller. The controller can control the movement of the slider of the corresponding lead screw slide module, thereby driving the adjustment rod 31 to expand and contract. Since the structure, installation and working principle of the lead screw slide module 32 are prior arts, no detailed description will be given here.

[0020] During installation, the high-position video camera of the present invention can be installed on the high-position mounting bracket by fixedly connecting the fixed base 1 with the high-position mounting bracket. When it is necessary to finely adjust the lens angle of the high-position video camera, the controller is used to control the movement of the slider of the corresponding lead screw slide module, thereby driving the corresponding adjustment rod to expand and contract. Since the 3 adjustment rods 31 and the camera module 2 are all connected through ball joints, there is a certain degree of freedom between the adjustment rod 31 and the camera module 2. As Figure 3 shown, when one of the adjustment rods expands and contracts, the camera module 2 will make a small rotation around the straight line AB formed by the hinge points of the other two adjustment rods, thereby realizing the fine adjustment of the lens angle.

[0021] By changing the lens angle adjustment principle, the present invention changes from the traditional direct angle adjustment to indirect angle adjustment. The lead screw slide module drives the adjustment rod to expand and contract to finely adjust the posture of the camera assembly within a certain range. This lens fine adjustment method has high braking stability and is not easy to cause the camera assembly to shake and lose its position.

[0022] In addition, a guide sleeve 5 is provided at the position where the adjusting rod 31 passes through the housing of the fixed base 1. The adjusting rod 31 passes through the corresponding guide sleeve 5 and extends into the fixed base 1, making the sliding of the adjusting rod 31 along the guide sleeve 5 more stable.

[0023] It is worth mentioning that a tension spring 4 is also connected between the fixed base 1 and the camera module 2. One end of the tension spring 4 is connected to the center of the rear end face of the camera module 2, and the end of the tension spring 4 away from the camera module 2 is connected to the center of the front end face of the fixed base 1. Since the adjusting rod 31 of the present invention is connected to the camera module 2 by a ball joint, and there is a certain gap in the ball joint, the ball joint gap will affect the accuracy and stability of the fine adjustment of the lens angle. Therefore, a tension spring 4 is arranged between the fixed base 1 and the camera module 2, and a pre-tightening force is applied to the fixed base 1 and the camera module 2 through the tension spring 4 to eliminate the influence of the ball joint gap on the accuracy and stability of the fine adjustment of the lens angle.

[0024] The above embodiments are only the preferred embodiments of the present invention, and the structure of the present invention is not limited to the forms listed in the above embodiments. Any modifications, equivalent replacements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A high-position video camera with fine-tunable lens, comprising a fixed base (1) and a camera module (2) connected to the front end of the fixed base (1); characterized in that: The camera module (2) is connected to the front end of the fixed base (1) through a fine-tuning device. The fine-tuning device includes three screw rod adjustment units (3), and the three screw rod adjustment units (3) are distributed in an equilateral triangle. One end of the screw rod adjustment unit (3) is arranged in the fixed base (1), and the end of the screw rod adjustment unit (3) far from the fixed base (1) is connected to the camera module (2) through a ball joint connection; the telescoping of the screw rod adjustment unit (3) can achieve fine adjustment of the angle of the lens.

2. The high-position video camera with fine-tunable lens according to claim 1, characterized in that: The screw rod adjustment unit (3) includes an adjustment rod (31) and a screw rod slide table module (32). One end of the adjustment rod (31) is connected to the camera module (2) through a ball joint connection. The end of the adjustment rod (31) far from the camera module (2) passes through the housing of the fixed base (1) and extends into the fixed base (1). The screw rod slide table module (32) is fixedly arranged in the fixed base (1) and corresponds to the position of the adjustment rod (31). The slider (321) of the screw rod slide table module (32) is connected to the corresponding adjustment rod (31), and the motors (322) of the screw rod slide table module (32) are respectively electrically connected to the controller.

3. The high-position video camera with fine-tunable lens according to claim 2, characterized in that: A guide sleeve (5) is provided at the place where the adjustment rod (31) passes through the housing of the fixed base (1). The adjustment rod (31) passes through the corresponding guide sleeve (5) and extends into the fixed base (1).

4. A high-position video camera with fine-tunable lens according to claim 1, characterized in that: A tension spring (4) is also connected between the fixed base (1) and the camera module (2). One end of the tension spring (4) is connected to the center of the rear end face of the camera module (2), and the end of the tension spring (4) far from the camera module (2) is connected to the center of the front end face of the fixed base (1).

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