CN111948880A - Adjustable lens mounting mechanism - Google Patents

Abstract

The invention discloses an adjustable mounting mechanism of a camera. Based on the invention, the first bracket is provided with the cylinder shell of a full-surrounding structure, and the rack is attached to the cylinder wall on one side of the cylinder shell, so that the cylinder shell with higher strength can improve the resistance to stress concentration on one side, and the dislocation offset between the rack attached to the cylinder wall of the cylinder shell and the gear of the driving mechanism is inhibited; furthermore, the elastic force generated by the elastic element can reduce and weaken the stress concentration on one side and reduce the gear-disengaging probability of meshing transmission. Therefore, the stability of the rack is improved, meanwhile, the stress concentration on one side is weakened, the meshing transmission misalignment between the gear and the rack can be reduced or even avoided, and the positioning precision of the lens module is improved. If the first support and the lens module in the lens accommodating cavity both use the cover plate for covering the lens accommodating cavity as a positioning reference, the assembly precision of the lens module and the first support can be further ensured, and the positioning precision of the lens module is further improved.

Description

Adjustable lens mounting mechanism

Technical Field

The invention relates to a lens mounting technology of a camera, in particular to an adjustable lens mounting mechanism.

Background

For scenes with moving objects, such as snapshots, the angle of the lens needs to be adjusted to enable the field of view of the lens to dynamically track the moving object.

In order to adjust the angle of the lens, the lens module can be arranged on the bracket, so that the bracket can rotate around the rotating shaft under the driving of the driving mechanism, and the swinging freedom degree can be provided for the bracket bearing the lens module.

The driving mechanism and the support can be in transmission connection through a gear and a rack so as to realize rotation precision control of the lens support with the tooth pitch as the granularity, and correspondingly, the swing pose of the lens module depends on the rotation angle of the lens support.

However, the transmission connection between the driving mechanism and the bracket is often arranged on the isolated sidewall of only one side of the bracket, so that a single-sided stress concentration is formed on the bracket, and since the isolated sidewall of the bracket is often not strong enough to resist the single-sided stress concentration, the isolated sidewall of the bracket yields to the single-sided stress concentration to generate deformation, and such deformation may cause misalignment between the rack and the pinion, thereby causing meshing transmission misalignment (such as tooth disengagement or tooth locking) between the rack and the pinion, further reducing the rotation accuracy control of the lens bracket, and accordingly, also affecting the positioning accuracy of the lens module.

Therefore, how to improve the positioning accuracy of the lens module becomes a technical problem to be solved in the prior art.

Disclosure of Invention

In one embodiment, there is provided an adjustable lens mounting mechanism comprising:

the first bracket comprises a barrel shell and a rack, the barrel shell surrounds a lens accommodating cavity for accommodating a lens module, one end of the barrel shell in a first direction is provided with a perspective window for avoiding the lens view of the lens module, and the rack is attached to the barrel wall of one side of the barrel shell in a second direction intersecting with the first direction;

a second bracket providing a mounting space for rotatably mounting the first bracket, the second bracket having a lens window exposing the see-through window at one end in the first direction;

the driving mechanism is provided with a gear in meshing transmission with the rack and is used for driving the first bracket to swing relative to the second bracket by utilizing the meshing transmission;

and the elastic element generates elastic force between the first bracket and the second bracket, wherein the elastic force is used for reducing the stress burden of the weight of the lens module on the meshing transmission and inhibiting the backlash in the meshing transmission.

Optionally, an end of the cartridge case opposite to the see-through window in the first direction further has a rib protruding in the second direction, and the rack is further supported by the rib.

Optionally, the lens accommodating chamber is further covered by a cover plate, and the cover plate is assembled with the rib in a stacked manner.

Optionally, the assembly and positioning between the lens module and the first bracket in the lens accommodating cavity of the first bracket use a cover plate for covering the lens accommodating cavity as a positioning reference.

Optionally, the lens module and the barrel shell are in contact fit with the same surface of the cover plate to form an assembly positioning of the first bracket and the lens module in the first direction by taking the cover plate as a positioning reference; the lens module is provided with a lens positioning column, the barrel shell is provided with a barrel shell positioning column on the end face in contact fit with the cover plate, the cover plate is provided with a first cover plate positioning hole and a second cover plate positioning hole, the lens positioning column is in plug-in fit with the first cover plate positioning hole, and the barrel shell positioning column is in plug-in fit with the second cover plate positioning hole, so that assembly positioning of the first support and the lens module in the second direction and a third direction intersecting the first direction and the second direction by taking the cover plate as a positioning reference is formed.

Optionally, the end of the cartridge case opposite the see-through window in the first direction further has a bead protruding in the second direction, and the cover plate and the bead form the surface contact fit between the cartridge case and the cover plate.

Optionally, the elastic element is on the same side as the rack in the second direction.

Optionally, the first bracket has a pair of coaxially arranged rotating shafts on opposite sides in the second direction; the second bracket is provided with a first shaft sleeve integrated with the second bracket and a second shaft sleeve coaxially arranged with the first shaft sleeve at two opposite sides in the second direction: the first shaft sleeve and the second shaft sleeve are respectively matched with the pair of rotating shafts in a rotating mode, the first shaft sleeve is arranged on the same side of the rack in the second direction, and the elastic element is arranged on one rotating shaft in rotating fit with the first shaft sleeve.

Optionally, the elastic element includes a torsion spring, a ring portion of the torsion spring is sleeved on the shaft seat of the rotating shaft, a first arm of the torsion spring is fixed to the first support, a second arm of the torsion spring abuts against the second support, and the torsion spring is in a compressed state between the first support and the second support.

Optionally, the barrel casing is provided with a spring arm insertion hole and an end face reinforcing rib on the end face forming the perspective window; the end part of the first spring arm is bent to form a hook inserted into the spring arm inserting hole; the end face reinforcing rib is provided with a spring arm crack for clamping the first spring arm.

Based on the above embodiment, the first bracket has the cartridge case of the fully enclosed structure, and the rack abuts against the cartridge case on one side, and the cartridge case has higher strength than the structure in which the rack is arranged on the isolated side wall, so that the resistance to the stress concentration on one side can be improved to suppress the misalignment between the rack abutting against the cartridge case of the cartridge case and the gear of the drive mechanism; furthermore, the elastic force generated by the elastic element can reduce the stress load of the weight of the lens module on the meshing transmission and inhibit the tooth clearance in the meshing transmission, thereby weakening the unilateral stress concentration formed at the transmission connection part of the gear and the rack and reducing the tooth stripping probability of the meshing transmission. Therefore, the stability of the rack is improved, meanwhile, the stress concentration on one side is weakened, meshing transmission misalignment between the gear and the rack can be reduced or even avoided, the rotation precision of the first support is further improved, and accordingly, the positioning precision of the lens module can be improved.

In addition, if the first support and the lens module accommodated in the lens accommodating cavity both use the cover plate for covering the lens accommodating cavity as a positioning reference, the assembly precision of the lens module and the first support can be further ensured, and the positioning precision of the lens module is further improved.

Drawings

The following drawings are only schematic illustrations and explanations of the present invention, and do not limit the scope of the present invention:

FIG. 1 is an exploded view of an adjustable lens mount mechanism according to one embodiment of the present invention;

fig. 2a and 2b are perspective views of a first holder in the lens mount mechanism shown in fig. 1;

FIG. 3 is a schematic view of the first bracket and the lens module of the lens mounting mechanism shown in FIG. 1;

FIG. 4 is a schematic view of an assembly structure of the first bracket and the lens module in the lens mounting mechanism shown in FIG. 1;

FIG. 5 is a schematic view of an optimized transmission principle between the first bracket and the driving mechanism in the lens mounting mechanism shown in FIG. 1;

FIGS. 6a and 6b are schematic views showing the fitting relationship between the second holder and the detachable fitting in the lens mount mechanism shown in FIG. 1;

FIG. 7 is a schematic view of a half-mount structure of the lens mount mechanism shown in FIG. 1;

FIGS. 8a and 8b are schematic views showing an assembling structure of the lens mount mechanism shown in FIG. 1;

FIG. 9 is an exploded view of a lens mount mechanism in another embodiment;

fig. 10a and 10b are schematic views of an assembling structure of the lens mounting mechanism shown in fig. 9.

Description of the reference numerals

10 first support

100 perspective window

11 barrel shell

12 annular flange

13 rotating shaft

130 travel limit column

131 axle seat

132 end face reinforcing rib

14 bead

15 rack

160 spring arm adapting groove

161 spring arm plug hole

162 spring arm crack

17 barrel shell positioning column

18 cover plate mounting hole

19 first cable hook

20 first lens module

21 first lens

22 first module body

23 assembly hole

24 Heat dissipation element

240 first module mounting screw

241 element positioning hole

25 interface board

250 interface board mounting screw

26 first cable

29 lens positioning column

30 cover plate

31 heat dissipation opening

32 screw through hole

33 first cover plate positioning hole

34 cover plate screw hole

35 cover plate mounting screw

36 interface board mounting post

37 second cover plate positioning hole

40 driving mechanism

41 Power element

42 gear

43 mounting hanger

44 drive mechanism mounting screw

50 integrated suspension

51 trepan boring

52 module mounting slot

60 second support

600 lens window

61 substrate

62 end plate

63 first side wall

631 position-limiting hole groove

632 spring arm support wall

633 driving mechanism avoiding hole groove

634 driving mechanism mounting hole seat

635 spring limiting rib

64 second side wall

65 first upright post

650 first shaft sleeve

66 second upright post

660 gap

661 positioning arc surface

662 fitting groove

663 fixed hole

664 positioning column

67 inner layer rib plate

68 second cable hook

69 mounting flange

70 demountable fitting

710 second shaft sleeve

721 complementary arc surface

Ear 722

723 through hole

724 locating hole

80 elastic element (torsion spring)

81 ring part

82 first spring arm

83 hook

84 second spring arm

90 second lens module

91 second lens

92 second module body

93 second module mounting post

94 second module positioning column

95 second module mounting screw

96 second cable

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and examples.

FIG. 1 is an exploded view of an adjustable lens mount mechanism according to an embodiment of the present invention. Referring to fig. 1, in this embodiment, an adjustable lens mounting mechanism may include a first bracket 10, a second bracket 60, a driving mechanism 40, and an elastic element 80.

The first holder 10 may include a barrel 11 and a rack 15 (e.g., a curved rack), the barrel 11 may surround a lens accommodating chamber for accommodating a first lens module 20 (e.g., a capture lens module), one end of the barrel 11 in a first direction (e.g., a depth direction parallel to an optical axis direction of the first lens module 20) has a see-through window 100 for avoiding a lens field of view of the first lens module 20, and the rack 15 abuts against a sidewall wall of the barrel 11 in a second direction (e.g., a width direction perpendicular to the optical axis direction of the first lens module 20) intersecting the first direction.

The second bracket 60 may provide a mounting space for rotatably mounting the first bracket 10, and one end of the second bracket 60 in the first direction may have a lens window 600 exposing the see-through window 100.

The drive mechanism 40 may have a gear 42 in meshing engagement with the rack 15 for driving the first carriage 10 to oscillate relative to the second carriage 60 with the meshing engagement. As can be seen in fig. 1, the drive mechanism 40 may also have a power element 41 (e.g., a motor) engaged with the gear 42, and a mounting lug 43 for mounting the power element 41 to the second bracket 60 using a drive mechanism mounting screw 44.

The elastic member 80 may generate an elastic force between the first mount 10 and the second mount 60, which serves to reduce a stress burden of the weight of the first lens module 20 on the engagement transmission and to suppress backlash in the engagement transmission.

Based on the above embodiment, the first holder 10 may have the cartridge case 11 of the full-enclosure structure, and the rack 15 abuts against the cartridge case 11 on one side, and the cartridge case 11 has higher strength than the structure in which the rack is arranged on the isolated side wall, and thus can improve the resistance to the stress concentration on one side to suppress the misalignment between the rack 15 abutting against the cartridge case 11 and the gear 42 of the drive mechanism 40; furthermore, the elastic force generated by the elastic element 80 can reduce the stress load of the weight of the lens module on the meshing transmission, and can inhibit the backlash in the meshing transmission, thereby weakening the unilateral stress concentration formed at the transmission connection part of the gear 42 and the rack 15, and reducing the gear-disengaging probability of the meshing transmission. Accordingly, by weakening the stress concentration on one side while improving the stability of the rack 15, the misalignment of the meshing transmission between the gear 42 and the rack 15 can be reduced or even avoided, and the rotational accuracy of the first mount 10 is improved, and accordingly, the positioning accuracy of the first lens module 20 can be improved.

In order to better understand the lens mounting mechanism in this embodiment, the respective structures of the respective portions will be described in detail below.

Fig. 2a and 2b are perspective views of the first holder in the lens mount mechanism shown in fig. 1. Referring to fig. 1 in further conjunction with fig. 2a and 2b, the first bracket 10 may further include an annular flange 12 surrounding the see-through window 100 outside the cartridge case 11, wherein the rotation shafts 13 may be arranged in pairs on opposite sides of the annular flange 12 in the second direction.

Since the cartridge case 11 has a full-wrap structure in the circumferential direction, the cartridge case 11 can have a higher strength than a half-wrap structure, and the annular flange 12 surrounding the see-through window 100 can function as a reinforcing rib for further improving the strength, and therefore, the misalignment of the coaxiality due to the deformation of the first holder 10 can be prevented between the rotating shafts 13 arranged in pairs in the annular flange 12, that is, the rotating shafts 13 arranged in pairs in the annular flange 12 can be maintained at a predetermined coaxiality level. In order to further ensure the coaxiality between the rotating shafts 13 by increasing the strength of the rotating shafts 13, the joint of the rotating shafts 13 and the annular flange 12 may be formed with a shaft seat 131 having a diameter larger than that of the rotating shafts 13.

Further, the pair of rotation shafts 13 of the first holder 10 are located at the outer periphery of the see-through window 100 (the outer periphery of the annular flange 12), so that the rotation shafts 13 can be brought close to the front end of the first lens module 20, and at this time, if the first boss 650 and the second boss 710 are located at the end where the lens window 600 is located in the first direction, the distance between the front end of the first lens module 10 and the lens window 600 can be shortened, thereby contributing to avoiding the loss of the angle of view.

Further, the rotating shaft 13 disposed at the outer periphery of the annular flange 12 may be retracted inside the peripheral wall of the barrel case 11 of the first holder 10 to avoid the rotating shaft 13 from protruding from the first holder 10 in the second direction, at which time, the dimension (width dimension) of the mounting space in the second direction provided by the second holder 60 for mounting the first holder 10 may be reduced, thereby contributing to a reduction in the dimension (width dimension) of the second holder 60 in the second direction to save the entire occupied space of the lens mounting mechanism.

In addition, an end of the barrel case 11 of the first bracket 10 opposite to the see-through window 100 in the first direction may further have a rib 14 protruding in the second direction, and the rack 15 may be further supported by the rib 14. This can further increase the resistance to one-side stress concentration, thereby suppressing misalignment between the rack 15 abutting the cylindrical wall of the cylindrical case 11 and the gear 42 of the drive mechanism 40. Preferably, the lens accommodating cavity of the first bracket 10 may be further covered by a cover 30 (e.g., a sheet metal part), and the cover 30 is assembled with the rib 14 in a stacked manner to provide further stable support for the rack 15.

Fig. 3 is a schematic view illustrating an assembly relationship between the first bracket and the lens module in the lens mounting mechanism shown in fig. 1. Fig. 4 is a schematic view of an assembly structure of the first bracket and the lens module in the lens mounting mechanism shown in fig. 1. Referring to fig. 1 in conjunction with fig. 3 and 4, in this embodiment, the first bracket 10 may be assembled with the first lens module 20 by using the cover plate 30 to form an assembly, and in order to further ensure the assembly accuracy of the first lens module 20 and the first bracket 10, thereby further improving the positioning accuracy of the first lens module 20, the first bracket 10 and the first lens module 20 accommodated in the lens accommodating cavity may both use the cover plate 30 covering the lens accommodating cavity as a positioning reference, specifically:

the first lens module 20 and the barrel housing 11 can be in contact fit with the same surface of the cover plate 30 to form an assembly positioning of the first bracket 10 and the first lens module 20 in the first direction with the cover plate 30 as a positioning reference, for example, the first lens module 20 can have a first module main body 22 and a first lens 21 at one end of the first module main body 22, the cover plate 30 can form a surface contact fit of the first lens module 20 and the cover plate 30 with the other end of the first module main body 22, and the cover plate 30 can form a surface contact fit of the barrel housing 11 and the cover plate 30 with the rib 14 of the first bracket 10;

the first lens module 20 may have lens positioning posts 29, the barrel housing 11 may have barrel positioning posts 17 on an end surface in surface contact with the cover plate 30, the cover plate 30 may have first cover plate positioning holes 33 and second cover plate positioning holes 37, and the lens positioning posts 29 may be in insertion fit with the first cover plate positioning holes 33 (the auxiliary guide frame S1 in fig. 3) and the barrel housing positioning posts 17 may be in insertion fit with the second cover plate positioning holes 37 (the auxiliary guide frame S2 in fig. 3) to form an assembly positioning of the first holder 10 and the first lens module 20 with the cover plate 30 as a positioning reference in the second direction and a third direction (e.g., a height direction perpendicular to the optical axis direction of the first lens module 20) intersecting the first direction and the second direction.

Based on the above-mentioned assembling positioning, the first lens module 20 and the cover plate 30 can be assembled and fixed by the first module mounting screws 240 passing through the assembly holes 23 of the other end of the first module main body 22 and the screw through holes 32 of the cover plate 30, and the barrel case 11 and the cover plate 30 can be assembled and fixed by the cover plate mounting screws 35 passing through the cover plate mounting holes 18 of the barrel case 11 and the cover plate screw holes 34 of the cover plate 30.

As best seen in fig. 3, the cover plate 30 may further have a heat dissipation opening 31 partially exposing the first lens module 22, and the assembly component including the first bracket 10, the first lens module 20 and the cover plate 30 may further include a heat dissipation element 24, the heat dissipation element 24 may be fixedly mounted on the cover plate 30 by using the first module mounting screws 240 and cover the heat dissipation opening 31 (the auxiliary frame S2 in fig. 3) to achieve a heat-conductive fit with the first lens module 22, and the heat dissipation element 24 may further include an element positioning hole 241 for cooperating with the lens positioning post 29 to achieve an assembly positioning between the heat dissipation element 24 and the first lens module 22.

Moreover, the assembly including the first bracket 10, the first lens module 20, the cover plate 30 and the heat dissipation member 24 may further include an interface board 25, the interface board 25 may be fixedly mounted on the interface board mounting post 36 of the cover plate 30 by an interface board mounting screw 250 (an auxiliary frame S3 in fig. 3), and the interface board 25 is in signal connection with the first lens module 20 and is supported by the interface board mounting post 36 to be spaced apart from the heat dissipation member 24, so as to achieve signal interaction between the first lens module 20 and a rear-end device and avoid affecting the heat dissipation effect of the heat dissipation member 24.

As shown in fig. 3, the heat dissipation member 24 and the interface board 25 are mounted to the cover plate 30 in a stacked manner in a single direction, and therefore, the assembly process of the aforementioned assembly can be simplified.

Fig. 5 is a schematic diagram of an optimized transmission principle between the first bracket and the driving mechanism in the lens mounting mechanism shown in fig. 1. Referring to fig. 5 in conjunction with fig. 1, as a preferred implementation, the elastic element 80 may be a torsion spring. When the elastic element 80 is a torsion spring, the ring portion 81 of the torsion spring may be sleeved on the axle seat 131 of the rotating shaft 13, the first arm 82 of the torsion spring may be fixed to the first bracket 10, the second arm 82 of the torsion spring may abut against the second bracket 60, and the torsion spring may be in a compressed state between the first bracket 10 and the second bracket 60.

Accordingly, the barrel case 11 of the first bracket 10 may have a spring arm fitting groove 160 that fits the inclined posture of the first spring arm 82 at the end surface forming the see-through window 100, and an end surface reinforcing rib 132 that is opened in a spring arm insertion hole 161 of the spring arm fitting groove 160 and is arranged around the annular flange 12, the end portion of the first spring arm 82 may be bent to form a hook 83 that is inserted in the spring arm insertion hole 161, and the end surface reinforcing rib 132 may be opened with a spring arm slit 162 that catches the first spring arm 82.

Preferably, the elastic element 80 may be disposed on the same side as the rack 15 in the second direction, so that the elastic force generated thereby can be more efficiently used to reduce the stress burden of the weight of the lens module on the meshing transmission and to suppress backlash in the meshing transmission. Furthermore, to ensure that the installation of the elastic member 80 is not affected by the demountable fitting 70, the first bushing 650 integrally formed with the second bracket 60 may be disposed on the same side as the elastic member 80 and the rack 15, i.e., a torsion spring serving as the elastic member 80 may be installed at one of the rotation shafts 13 rotatably fitted with the first bushing 650.

Fig. 6a and 6b are schematic views showing the assembling relationship between the second holder and the detachable assembly in the lens mounting mechanism shown in fig. 1. Fig. 7 is a schematic view of a half-assembling structure of the lens mounting mechanism shown in fig. 1. Fig. 8a and 8b are schematic views of an assembling structure of the lens mounting mechanism shown in fig. 1. Referring to fig. 1 in conjunction with fig. 6a and 6b, fig. 7 and fig. 8a and 8b, the second bracket 60 may have, on opposite sides in the second direction, first sleeves 650 integrally formed with the second bracket 60, and notches 660 for coaxially mounting the second sleeves 710 with the first sleeves 650, and the lens mounting mechanism may further include a detachable mounting element 70, the detachable mounting element 70 may have the aforementioned second sleeves 710, and the detachable mounting element 70 may be in positioning fit with the second bracket 60, so that the second sleeves 710 are maintained at a predetermined coaxial degree with the first sleeves 650 at the notches 660, and the first sleeves 650 and the second sleeves 710 are respectively in rotating fit with a pair of coaxially arranged rotating shafts 13 of the first bracket 10, wherein the positioning fit of the detachable mounting element 70 with the second bracket 60 may include:

(1) positioning and matching the first shaft sleeve 650 by taking the axis of the first shaft sleeve as a reference;

(2) a detachable fastening connection using a connection member 730 (e.g., a screw); and the number of the first and second groups,

(3) and the auxiliary positioning fit is used for inhibiting the positioning offset generated by the detachable fastening connection mentioned in the point (2) to the reference positioning fit mentioned in the point (1).

Based on the rotational engagement of the first hub 650 and the second hub 710 with the pair of coaxially arranged rotating shafts 13 of the first bracket 10, respectively, the driving mechanism 40 may drive the first bracket 10 to swing relative to the second bracket 60 through the rotational engagement of the rotating shafts 13 with the first hub 650 and the second hub 710 to control the angle of the lens field of view of the first lens module 20. Since the coaxiality between the first boss 650 and the second boss 710 can be controlled by the positioning assembly between the detachable assembly 70 and the second bracket 60, the swinging precision of the first bracket 60 relative to the first boss 650 and the second boss 710 is improved, and the adjustment precision of the first lens module 20 carried by the first bracket 10 is improved.

Specifically, the second bracket 60 may have a first pillar 65 and a second pillar 66 disposed at opposite sides of the lens window 600 in the second direction.

For example, the second bracket 60 may include a base plate 61, an end plate 62 positioned at one end of the base plate 61 in the first direction, and first and second sidewalls 63 and 64 positioned at opposite sides of the base plate 61 in the second direction, respectively. Accordingly, the lens window 600 may be open to the end plate 62, for example, the lens window 600 may be a cutout formed in the end plate 62 at the arc-shaped edge, the first pillar 65 may be formed at the junction of the first sidewall 63 and the end plate 62, and the second pillar 66 may be formed at the junction of the second sidewall 64 and the end plate 62.

Based on the above structure, the first sleeve 650 may be integrally integrated with the extended top end of the first upright 65 in the third direction, the notch 660 may be located at the extended top end of the second upright 66 in the third direction, and the detachable assembly 70 and the second upright 66 form an arc surface fit, a threaded connection, and a radial stop fit, at this time:

the datum alignment as mentioned in point (1) above may include: the demountable fitting 70 and the second bracket 60 are fitted with the above-mentioned arc surface with reference to the axis of the first bushing 650, for example, the second bracket 60 may have a positioning arc surface 661 at the edge of the notch 660, and the demountable fitting 70 may have a complementary arc surface 721 complementary to the positioning arc surface 661 at the outer circumference of the second bushing 710, wherein the central axis of the positioning arc surface 661 and the axis of the first bushing 650 have a predetermined coaxiality, and the positioning arc surface 661 and the complementary arc surface 721 form the arc surface fitting;

the releasable fastening connection mentioned in the aforementioned point (2) includes: with the screw coupling formed by the coupling member 730 in parallel with the axis of the first bushing 650, for example, the second bracket 60 may have a fixing hole 663 in parallel with the axis of the first bushing 650 at a side of the second upright post 66 facing away from the first upright post 65, the detachable fitting member 70 may have an ear portion 722 coupled to the second bushing 710, the ear portion 722 may have a through hole 723, wherein the coupling member 730 passes through the through hole 723 and is screwed into the fixing hole 663 to form the screw coupling;

the auxiliary positioning cooperation mentioned in the aforementioned point (3) may include: for example, the second bracket 60 may have a positioning column 664 and a positioning hole 724 on a side of the second upright post 66 facing away from the first upright post 65, which is parallel to the axis of the first sleeve 650, and the ear portion 722 of the detachable fitting 70 may have a positioning hole 724, wherein the positioning column 664 and the positioning hole 724 are inserted to form the radial stop fit.

In order to limit the radial offset generated by the threaded connection to a controllable range of auxiliary positioning fit, a fixing hole 663 may be arranged between the positioning cambered surface 661 and the positioning column 664, and a through hole 723 may be arranged between the complementary cambered surface 721 and the positioning hole 724.

The second upright post 66 may further have a fitting groove 622 on a side facing away from the first upright post 65 in the second direction, the ear portion 722 of the detachable fitting member 70 may have a shape complementary to the fitting groove 622, and the ear portion 722 is fixed in the fitting groove 622, so that the detachable fitting member 70 and the second upright post 66 fitted to each other may form a cylindrical whole body having a relatively smooth outer contour.

Directing attention to fig. 6a in particular, the first side wall 63 of the second bracket 60 may have a limit hole slot 631 for slidably cooperating with the stroke limit post 130 at the side wall of the cartridge case 11 of the first bracket 10 to limit the stroke limit of the first bracket 10 swinging relative to the second bracket 60; the first side wall 63 of the second bracket 60 may also have a drive mechanism escape hole groove 633 complementary to the profile of the power element 41 (e.g., motor) of the drive mechanism 40, and a drive mechanism mounting hole seat for securing the drive mechanism mounting screw 44.

With particular attention to fig. 6b, in order to avoid the deflection between the first upright 65 and the second upright 66 caused by the deformation of the base plate 61 under force, thereby affecting the coaxiality between the first axle seat 650 and the second axle seat 710, the base plate 61 may have an inner rib 67 connected between the first upright 65 and the second upright 66. Further, the second bracket 60 forms a spring arm support wall 632 at a side of the end plate 62 near the first pillar 65 for abutment with the second spring arm 84 of the torsion spring serving as the elastic member 80, and the second bracket 60 also forms a spring stopper rib 635 at the end plate 62 that prevents the second spring arm 84 from deviating to the spring arm support wall 632 in the second direction.

Directing attention to fig. 8b, the first bracket 10 may have a first cable hook 19, the second bracket 60 may have a second cable hook 68, and the first cable 26 exiting the interface board 25 may be hooked to at least one of the first cable hook 19 and the second cable hook 68. Also, the second bracket 60 may further have a mounting rim 69 for integrally mounting the lens mounting mechanism.

Fig. 9 is an exploded view of a lens mount mechanism according to another embodiment. Fig. 10a and 10b are schematic views of an assembling structure of the lens mounting mechanism shown in fig. 9. Referring to fig. 9 and fig. 10a and 10b, in another embodiment, in order to improve the integration of the lens mounting, the second bracket 60 may further have an integrated suspension 50.

The integrated suspension 50 may be integrally formed on the base plate 61 of the second bracket 60 outside the installation space for rotatably installing the first bracket 10, and the integrated suspension 50 may have a trepan 51 and a module installation slot 52.

The second lens module 90 (e.g., a monitoring lens module) has a second lens 91 protruding from a second module main body 92, the second lens 91 can be inserted into the sleeve hole 51 of the integrated suspension 50, a second module positioning post 94 protruding from the second module main body 92 in the same direction as the second lens 91 is positioned in the positioning hole (hidden in the figure) of the integrated suspension 50, and a second module mounting post 93 protruding from the second module main body 92 in the same direction as the second lens 91 can be fixed to the module mounting groove hole 52 of the integrated suspension 50 by a second module mounting screw 95.

In addition, the second cable 96 led out from the second lens module 90 may be hooked on at least one of the first cable hook 19 and the second cable hook 68.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims (10)

1. An adjustable lens mounting mechanism, comprising:

the first bracket (10) comprises a barrel shell (11) and a rack (15), the barrel shell (11) surrounds a lens accommodating cavity for accommodating a lens module (20), one end of the barrel shell (11) in a first direction is provided with a perspective window (100) for avoiding the lens view of the lens module (20), and the rack (15) is attached to one side barrel wall of the barrel shell (11) in a second direction intersecting with the first direction;

a second bracket (60), the second bracket (60) providing a mounting space for rotatably mounting the first bracket (10), one end of the second bracket (60) in the first direction having a lens window (600) exposing the see-through window (100);

a drive mechanism (40), wherein the drive mechanism (40) is provided with a gear (42) in meshing transmission with the rack (15) and is used for driving the first bracket (10) to swing relative to the second bracket (60) by the meshing transmission;

an elastic element (80), wherein the elastic element (80) generates an elastic force between the first bracket (10) and the second bracket (60), wherein the elastic force is used for reducing stress load of the weight of the lens module (20) on the meshing transmission and inhibiting backlash in the meshing transmission.

2. The lens mounting mechanism according to claim 1, wherein an end of the barrel case (11) opposite to the see-through window (100) in the first direction further has a rib (14) protruding in the second direction, and the rack gear (15) is further supported by the rib (14).

3. The lens mounting mechanism according to claim 2, wherein the lens accommodating chamber is further covered with a cover plate (30), and the cover plate (30) is stack-fitted with the rib (14).

4. The lens mounting mechanism according to claim 1, wherein the fitting positioning between the lens module (20) and the first holder (10) in the lens receiving cavity of the first holder (10) is based on a positioning of a cover plate (30) that covers the lens receiving strength.

5. The lens mounting mechanism according to claim 4,

the lens module (20) and the barrel shell (11) are in contact fit with the same surface of the cover plate (30) to form the assembly positioning of the first bracket (10) and the lens module (20) in the first direction by taking the cover plate (30) as a positioning reference;

the lens module (20) is provided with a lens positioning column (29), the barrel shell (11) is provided with a barrel shell positioning column (17) on the end face in surface contact fit with the cover plate (30), the cover plate (30) is provided with a first cover plate positioning hole (33) and a second cover plate positioning hole (37), the lens positioning column (29) is in plug fit with the first cover plate positioning hole (33), and the barrel shell positioning column (17) is in plug fit with the second cover plate positioning hole (37), so that assembly positioning of the first support (10) and the lens module (20) in the second direction and a third direction intersecting the first direction and the second direction by taking the cover plate (30) as a positioning reference is formed.

6. The lens mounting mechanism according to claim 5, wherein an end of the barrel case (11) opposite to the see-through window (100) in the first direction further has a bead (14) protruding in the second direction, and the cover plate (30) and the bead (14) form the surface contact fit between the barrel case (11) and the cover plate (30).

7. The lens mounting mechanism according to claim 1, wherein the elastic member (80) is on the same side as the rack (15) in the second direction.

8. The lens mounting mechanism of claim 7,

the first bracket (10) is provided with a pair of rotating shafts (13) which are coaxially arranged at two opposite sides in the second direction;

the second bracket (60) has a first boss (650) integrated with the second bracket (60) and a second boss (710) coaxially mounted with the first boss (650) on opposite sides in the second direction;

wherein the first shaft sleeve (650) and the second shaft sleeve (710) are respectively rotationally fitted with a pair of the rotating shafts (13), the first shaft sleeve (650) is on the same side as the rack (15) in the second direction, and the elastic member (80) is installed at one of the rotating shafts (13) rotationally fitted with the first shaft sleeve (650).

9. The lens mounting mechanism according to claim 8, wherein the elastic element (80) comprises a torsion spring, the ring portion (81) of the torsion spring is sleeved on the axle seat (131) of the rotating shaft (13), the first arm (82) of the torsion spring is fixed on the first bracket (10), the second arm (84) of the torsion spring abuts on the second bracket (60), and the torsion spring is in a compressed state between the first bracket (10) and the second bracket (60).

10. The lens mounting bracket of claim 9,

the barrel shell (11) is provided with a spring arm inserting hole (161) and an end face reinforcing rib (132) on the end face forming the perspective window (100);

the end part of the first spring arm (82) is bent to form a hook (83) inserted into the spring arm insertion hole (161);

the end surface reinforcing ribs (132) are provided with spring arm cracks (162) for clamping the first spring arm (82).

Images