Multi-optical-axis repeated installation anti-backlash mechanism

Abstract

The utility model relates to a multi-optical-axis repeated installation anti-backlash mechanism, which comprises a holder, an installation seat and a protective cover, the installation seat is fixed on the holder, the protective cover is fixed on the installation seat, and the assembly clearance is eliminated through the matching surfaces of the installation seat and the protective cover. A wedge block with a first inclined surface is arranged on the mounting seat, and the protective cover is provided with a second inclined surface matched with the first inclined surface of the wedge block. During production, the mounting positions of the protective cover and the mounting seat are adjusted, the protective cover can be directly mounted on site, errors caused by mounting the protective cover for multiple times can be well eliminated through inclined plane matching, re-adjustment is not needed during field mounting, and the mounting efficiency is improved.

Description

Technical Field

[0001] The utility model relates to a multi-optical axis repeated installation clearance elimination mechanism, belonging to the field of surveillance pan-tilt heads. Background Art

[0002] In recent years, with the emergence of infrared thermal imaging technology, it has also been applied to surveillance pan-tilt head cameras, adding night vision functions in low-light and night environments. With the assistance of visible light components in the second shield, all-weather surveillance can be achieved. Therefore, a surveillance pan-tilt head camera needs to include a camera component in the first shield, a visible light component in the second shield, and a thermal imaging component in the third shield. During use, the picture heights of the second shield and the third shield need to be aligned with that of the first shield, otherwise the pictures will be misaligned. Especially in long-distance surveillance pan-tilt heads, the misalignment error is greater as the distance increases. Moreover, since the shields and the pan-tilt head are shipped separately and installed on-site during transportation. Even if the shields are adjusted in place during production, the above problems will still exist during on-site installation. Therefore, as long as the error caused by repeated installation of the shields can be solved, the above problems can be well solved. Summary of the Invention

[0003] The purpose of the utility model is to provide a multi-optical axis repeated installation clearance elimination mechanism that can solve the installation error caused by repeated installation of the shields and improve the installation efficiency.

[0004] To achieve the above purpose, the technical solution of the utility model is: a multi-optical axis repeated installation clearance elimination mechanism, including a pan-tilt head, a mounting base, and a shield. The mounting base is fixed on the pan-tilt head, the shield is fixed on the mounting base, and the assembly clearance is eliminated through the mating surfaces of the mounting base and the shield that cooperate with each other.

[0005] Preferably, the mating surface is a wedge block provided with a first inclined surface on the mounting base, and the shield has a second inclined surface that cooperates with the first inclined surface of the wedge block. Using the wedge block to provide an inclined surface does not require modifying the existing structure of the mounting base, which is convenient for subsequent rectification on the basis of the existing mounting base.

[0006] Preferably, both the upper and lower parts of the first inclined surface of the wedge block have flat surfaces. If dust and tiny particles adhere to the first inclined surface, then the dust and tiny particles will be squeezed into the gap formed by the flat surfaces during installation, avoiding affecting the fitting accuracy.

[0007] Preferably, the mounting base includes a mounting main body with a portal structure and an L-shaped mounting plate fixed on the mounting main body. The mounting main body covers the upper part of the pan-tilt head. The connection of the mounting main body is more reliable, and the L-shaped mounting plate can well support the weight of the shield, making the installation fit more firm.

[0008] Preferably, a wedge block is fixed at the L-shaped internal angle of the mounting plate, and the length of the wedge block is equal to the width of the mounting plate. The wedge block is fixed at the L-shaped internal angle and can abut against two perpendicular reference surfaces of the mounting plate, enabling more accurate installation.

[0009] Preferably, the bottom of the protective cover is fixedly connected with a mounting bottom plate. A second inclined surface is provided inside the mounting bottom plate, and the outside is fixedly connected with the mounting plate by screws. The second inclined surface inside the mounting bottom plate is matched with the first inclined surface of the wedge block for installation, and by screwing the screws, the cooperation of the two inclined surfaces becomes more reliable after the screws are tightened.

[0010] Preferably, a positioning pin is provided on the outside of the mounting plate, and a positioning hole matching the positioning pin is provided on the mounting bottom plate. The positioning pin prevents the protective cover from being installed reversely, avoiding installation errors.

[0011] Preferably, the surface of the mounting plate has a wire groove communicating horizontally and vertically. This facilitates wire routing, and the hidden wire routing improves the aesthetics.

[0012] Preferably, mounting plates are fixed on both sides of the mounting body, and protective covers are fixed on the mounting plates. A visible light component or a thermal imaging component is installed inside the protective cover. A visible light component and a thermal imaging component can be respectively installed in the two protective covers.

[0013] Preferably, the first inclined surface of the wedge block forms an obtuse angle with the bottom surface, and the second inclined surface of the mounting bottom plate forms an acute angle with the bottom surface. This inclined surface cooperation makes the inclined surface cooperation between the mounting bottom plate and the wedge block closer.

[0014] After adopting the above structure, since the present utility model eliminates the assembly gap through the mutual inclined surface cooperation of the mounting seat and the protective cover. Therefore, after adjusting the installation position of the protective cover and the mounting seat during production, it can be directly installed on-site. The inclined surface cooperation can well eliminate the errors caused by installing the protective cover multiple times, and no further adjustment is required during on-site installation, improving the installation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a perspective view of the present utility model;

[0016] Figure 2 is Figure 1 the exploded view after the protective cover in

[0017] Figure 3 is the installation schematic diagram of the pan-tilt and the mounting seat of the present utility model;

[0018] Figure 4 is Figure 1 the enlarged view of part A of

[0019] Figure 5 is Figure 4 the enlarged view of part B of DETAILED DESCRIPTION OF THE INVENTION

[0020] The following embodiments given in conjunction with the accompanying drawings further illustrate the present utility model in detail.

[0021] Embodiment 1, a multi-optical axis repeated installation backlash elimination mechanism, includes a pan-tilt 1, a mounting base 2, and a protective cover 3. Among them, a left-right rotation mechanism is installed inside the housing at the bottom of the pan-tilt 1, which can drive the upper housing to rotate left and right in the vertical direction. A horizontal rotation mechanism is installed inside the upper housing, which can drive the mounting base 2 to rotate horizontally.

[0022] See Figure 1 、 2 As shown in FIGS. 3 and 5, the mounting base 2 includes a mounting main body 21 with a portal structure and two L-shaped mounting plates 22 respectively fixed on both sides of the mounting main body 21 by bolts. The mounting main body 21 covers the upper part of the pan-tilt 1. Protective covers 3 are respectively fixed on the mounting plates 22, and a visible light component and a thermal imaging component are respectively installed inside the protective covers 3. Another set of visible light components or thermal imaging components can be installed on the top of the mounting main body 21.

[0023] The horizontal surface of the mounting plate 22 has a wire groove 23 that is horizontally and vertically connected, facilitating wire routing.

[0024] See Figure 1 and 4 As shown in FIGS., a mounting base plate 31 is fixed to the bottom of the protective cover 3 by bolts. A second inclined surface 6 is provided inside the mounting base plate 31, and the second inclined surface 6 can cooperate with the first inclined surface 4. The outer side of the mounting base plate 31 is fixedly connected to the mounting plate 22 by a horizontal screw 8. The horizontal screw 8 is provided to facilitate installation, and the two inclined surfaces are tightened more and more by the screw 8 during installation, without gaps. A positioning pin 9 is provided on the outer side of the mounting plate 22, and a positioning hole matching the positioning pin 9 is provided on the mounting base plate 31. During installation, the positioning pin 8 cooperates with the positioning hole to prevent installation errors when the protective cover 3 is installed.

[0025] It should be noted that the mating surfaces in this embodiment are two inclined surfaces, namely the inclined surface mating of the first inclined surface 4 and the second inclined surface 6. Of course, it can also be the mating of a convex arc surface and a concave arc surface, or the mating of a groove and a convex block, etc. Various mating surface forms can enable the protective cover 3 and the mounting base 2 to be repeatedly assembled to eliminate assembly gaps.

[0026] See Figure 2 、 3 As shown in FIGS. 3 and 5, the wedge block 5 is fixed to the L-shaped inner corner of the mounting plate 22 by bolts, so that installation can be carried out with a vertical surface and a horizontal surface as references to avoid error generation. See Figure 5As shown, both the upper and lower parts of the first inclined surface 4 of the wedge block 5 have flat surfaces 7. If fine particulate dust appears on the first inclined surface 4, it will be squeezed into the gap formed by the flat surfaces 7 during installation, without installation errors. The length of the wedge block 5 is equal to the width of the mounting plate 22, which can increase the area of the inclined surface fit and improve the fitting accuracy. The first inclined surface 4 of the wedge block 5 forms an obtuse angle with the bottom surface, and the second inclined surface 6 of the mounting base plate 31 forms an acute angle with the bottom surface. When the mounting base plate 31 is installed, it will be squeezed into the acute angle gap formed by the first inclined surface 4, making the equipment more reliable and not prone to displacement.

[0027] When the present utility model is debugged and installed during production, first, the mounting body 21 is fixed on the pan-tilt 1, then the two mounting plates 22 on both sides are fixed by bolts, and then the combination of the mounting base plate 31 and the protective cover 3 is tightened and fixed by screws 8, so that the first inclined surface 4 and the second inclined surface 6 cooperate with each other. Then, the positions of the visible light component and the thermal imaging component can be finely adjusted to ensure that the picture is correct. After the debugging is completed, the combination of the protective cover and the mounting base plate 31 can be removed and loaded for shipment. After on-site installation, since the debugging has been completed during production. Therefore, as long as the first inclined surface 4 and the second inclined surface 6 are made to cooperate with each other during on-site installation and tightened with screws 8. There will be no installation deviation, and the inclined surface fit can well eliminate the errors caused by installing the protective cover 3 multiple times. No further adjustment is required during on-site installation, improving the installation efficiency.

[0028] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the inventive concept of the present utility model, several modifications and improvements can still be made, and these all belong to the protection scope of the present utility model.

Claims

1. A multi-optical axis repeated installation backlash elimination mechanism, comprising a pan head (1), a mounting seat (2) and a protective cover (3), wherein the mounting seat (2) is fixed on the pan head (1), characterized in that: The shield (3) is fixed on the mounting seat (2), and the mounting seat (2) and the shield (3) have mutually matching surfaces to eliminate assembly clearance.

2. A multi-optical axis repeated installation backlash elimination mechanism according to claim 1, characterized in that: The matching surface is a wedge block (5) having a first inclined surface (4) arranged on the mounting seat (2), and the shield (3) has a second inclined surface (6) matching the first inclined surface (4) of the wedge block (5).

3. A multi-optical axis repeated installation backlash elimination mechanism according to claim 2, characterized in that: The first inclined surface (4) of the wedge block (5) has a plane (7) at the upper and lower parts.

4. The multi-optical axis repeated installation backlash elimination mechanism according to claim 1, characterized in that: The mounting seat (2) comprises a mounting body (21) of a door-shaped structure and an L-shaped mounting plate (22) fixed on the mounting body (21); the mounting body (21) covers the upper part of the pan / tilt head (1).

5. The multi-optical axis repeated installation backlash elimination mechanism according to claim 4, characterized in that: A wedge block (5) is fixed at the L-shaped inner corner of the mounting plate (22), and the length of the wedge block (5) is equal to the width of the mounting plate (22).

6. The multi-optical axis repeated installation backlash elimination mechanism according to claim 1, characterized in that: The bottom of the shield (3) is fixedly connected to a mounting base plate (31), the inner side of the mounting base plate (31) is provided with a second inclined surface (6), and the outer side is fixedly connected to the mounting plate (22) via screws (8).

7. The multi-optical axis repeated installation backlash elimination mechanism according to claim 4, characterized in that: A positioning pin (9) is provided on the outer side of the mounting plate (22), and a positioning hole matching the positioning pin (9) is provided on the mounting base plate (31).

8. The multi-optical axis repeated installation backlash elimination mechanism according to claim 4, characterized in that: The surface of the mounting plate (22) is provided with a wiring groove (23) which is connected in the horizontal and vertical directions.

9. The multi-optical axis repeated installation backlash elimination mechanism according to claim 4, characterized in that: Mounting plates (22) are fixed on both sides of the mounting body (21), and protective covers (3) are fixed on the mounting plates (22), wherein a visible light component and a thermal imaging component are respectively installed in the protective covers (3).

10. The multi-optical axis repeated installation backlash elimination mechanism according to claim 2, characterized in that: The first inclined surface (4) of the wedge block (5) forms an obtuse angle with the bottom surface, and the second inclined surface (6) of the mounting base plate (31) forms an acute angle with the bottom surface.

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