A multifunctional unlocking mechanism for a vehicle-mounted photoelectric turntable

Abstract

The present invention relates to the technical field of vehicle-mounted photoelectric turntables, and in particular to a multifunctional unlocking mechanism for vehicle-mounted photoelectric turntables, comprising: a head assembly, an azimuth turntable, a pitch frame and a locking mechanism, wherein the azimuth turntable is driven to rotate and provided with a pitch frame, the head assembly is mounted on the pitch frame via a rotating shaft, and the locking mechanism comprises: a support, a bearing, an inner shaft, an outer shaft, a worm, a worm wheel, a motor, end face teeth, a limit pin, a spring and a limit block; a support is mounted inside the bottom wall of the pitch frame, an outer shaft is mounted in the axial hole of the support via a bearing, an inner shaft is slidably inserted in the hollow hole of the outer shaft, and the top end face of the outer shaft is meshed with the inner shaft via the end face teeth, and the outer shaft is embedded in the worm wheel, and the worm wheel is meshed with the worm; the device can be unlocked electrically or manually, and can realize the unlocking functions in the pitch direction and the azimuth direction at the same time, thereby solving the problem of the turntable losing function due to failure of the locking device, improving reliability and reducing cost.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle-mounted photoelectric turntables, and in particular to a multifunctional unlocking mechanism for vehicle-mounted photoelectric turntables. Background Art

[0002] With the advancement of technology, combat vehicles are becoming increasingly unmanned and automated. Vehicle-mounted optoelectronic turntables, acting as the vehicle's "eyes," have been widely used in various vehicle models, providing essential support for quickly and effectively acquiring information about the vehicle's surroundings. Generally speaking, vehicle-mounted optoelectronic turntables require a lock / unlock switch between non-operating and operating states. The purpose is to lock the turntable in the non-operating state to prevent violent shaking and impact from the vehicle's acceleration, deceleration, and turbulence. In the operating state, the turntable must be immediately unlocked to enable observation, aiming, and searching.

[0003] The vehicle-mounted optoelectronic turntable primarily consists of a pitch mount, an azimuth turntable, and a head assembly. When not observing a target, the pitch mount and head assembly must be locked, and the rotation limiter must be set to zero the aiming axis and prevent collisions. The side assembly must be unlocked during operation. The unlocking mechanism is a device designed to address the issues of zeroing, locking, and unlocking. Currently, most existing locking devices utilize two separate electric mechanisms for unlocking pitch and azimuth, respectively. These mechanisms cannot be unlocked if the electronic control circuit malfunctions or fails, resulting in a loss of functionality. Summary of the Invention

[0004] In response to the shortcomings of the existing technology, the present invention provides a multifunctional unlocking mechanism for a vehicle-mounted photoelectric turntable, which utilizes a worm gear transmission method and has excellent anti-vibration and impact protection. The device adopts a redundant design and can be unlocked both electrically and manually, and can simultaneously realize the pitch and azimuth unlocking functions, solving the problem of the turntable losing function due to failure of the locking device, thereby improving reliability and reducing costs.

[0005] The present invention is achieved through the following technical solutions:

[0006] A multifunctional unlocking mechanism for a vehicle-mounted photoelectric turntable, comprising: a head assembly, an azimuth turntable, a pitch frame and a locking mechanism, wherein the pitch frame is driven to rotate on the azimuth turntable, and the head assembly is mounted on the pitch frame via a rotating shaft, and the locking mechanism comprises: a support, a bearing, an inner shaft, an outer shaft, a worm, a worm gear, a motor, an end face tooth, a limit pin, a spring and a limit block; the support is mounted inside the bottom wall of the pitch frame, the outer shaft is mounted in the axial hole of the support via the bearing, the inner shaft is slidably inserted in the hollow hole of the outer shaft, and the top end of the outer shaft is fixed with the support. The surface is meshed with the inner shaft through the end face teeth, and the outer shaft is embedded in the worm wheel, the worm wheel is meshed with the worm, the motor is installed on the support, and the output end of the motor is provided with the worm. The upper and lower ends of the inner shaft are detachably locked with the limit pins by screws. The spring is sleeved on the inner shaft so that the upper end of the spring abuts against the bottom end of the outer shaft and the lower end abuts against the upper end of the limit pin on the lower side. The bottom of the head assembly and the top of the azimuth turntable are respectively provided with the limit blocks, which are respectively used to cooperate with the limit pins on the upper and lower sides to limit.

[0007] Preferably, the axial hole of the support further includes an integrally formed stop plate, and the top and bottom of the stop plate are respectively abutted against the bearing.

[0008] Preferably, the locking mechanism also includes a pressure ring, a clamping cover, a locking cover and a sealing groove; the top of the support is detachably locked with the locking cover, and a through hole is provided at the top axis of the locking cover for the upper end of the inner shaft to pass through, and the bottom of the lower side bearing is sequentially abutted against the pressure ring and the clamping cover from top to bottom, and the clamping cover is locked with the bottom axial hole of the support through a thread, and the sealing grooves are respectively provided on the circumferential surfaces of the through hole and the clamping cover, and a rubber sealing ring is provided in the sealing groove.

[0009] Preferably, the upper part of the inner shaft also includes an integrally formed shaft disc portion, the upper part of the outer shaft also includes an integrally formed chuck portion, and the top of the chuck portion is axially provided with a cam portion, the bottom of the shaft disc portion and the top of the cam portion are respectively provided with meshing end face teeth, the top of the worm gear also includes a slot, the chuck portion is pressed and embedded in the slot, and the upper bearing is pressed through the chuck portion.

[0010] Preferably, the locking mechanism also includes a first photoelectric switch, a second photoelectric switch and a limit pin; the first photoelectric switch and the second photoelectric switch are installed at 90° on the top of the support, the limit pin is installed on the top of the chuck part, and the limit pin is arranged in an L-shaped structure.

[0011] Preferably, the limit block is provided in a disc-shaped structure, and a limit groove is provided on the top of the limit block, wherein the limit groove includes a circular groove in the axial direction and strip grooves distributed on both sides of the circular groove and penetrating therethrough.

[0012] Preferably, the strip grooves in the upper and lower limiting grooves are respectively opened in the same direction and parallel to each other.

[0013] Preferably, the limiting pin includes a connecting part at the top and a limiting part at the bottom; a locking hole is provided on the side wall of the connecting part in the lower side limiting pin to facilitate the insertion of an external disassembly rod; among the four side wall surfaces of the limiting part, two opposite side wall surfaces are flat end surfaces, and the other two opposite side wall surfaces are arc-shaped surfaces, so that the limiting part and the circular groove can adapt to each other and limit.

[0014] Preferably, an annular groove is provided to facilitate installation of the locking mechanism.

[0015] Preferably, a certain distance is maintained between the ends of the upper and lower limiting pins and the bottoms of the upper and lower limiting grooves.

[0016] The present invention has the following beneficial effects:

[0017] 1. Multiple functions and low cost: The unlocking device of the present invention is driven by a transmission method of a worm gear and a torque motor combination, which can simultaneously realize the unlocking function in both pitch and azimuth directions, saving a set of mechanisms and electronic components and significantly reducing costs.

[0018] 2. Good operability and low unlocking force: The unlocking device of the present invention is driven by a motor to complete the locking. When there is no power or the motor cannot complete the unlocking, the end face teeth and the spring structure are combined to easily complete the unlocking function manually, which greatly improves the reliability of the turntable.

[0019] 3. Waterproof, shock-resistant, and vibration-resistant: The unlocking mechanism of this invention utilizes a rotary mechanism to unlock, coupled with a radial rubber seal, offering superior water resistance compared to other pull-out locking mechanisms. The worm gear's self-locking properties effectively protect the mechanism from shock and vibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 3D schematic diagram of the optoelectronic turntable according to an embodiment of the present invention.

[0022] Figure 2 Schematic cross-sectional view of the head assembly, azimuth turntable, pitch frame and locking mechanism according to an embodiment of the present invention.

[0023] Figure 3 3D schematic diagram of the locking mechanism according to an embodiment of the present invention.

[0024] Figure 4 This is a three-dimensional schematic diagram of the locking mechanism removing the locking cover according to an embodiment of the present invention.

[0025] Figure 5 2 is a cross-sectional view of a locking mechanism according to an embodiment of the present invention.

[0026] Figure 6 This is a structural diagram of the meshing of the outer shaft and the inner shaft in an embodiment of the present invention.

[0027] Figure 7 This is a structural diagram of the limiting pins and limiting blocks according to an embodiment of the present invention.

[0028] In the figure: 1-head assembly, 2-azimuth turntable, 3-pitch frame, 4-locking mechanism, 41-support, 42-bearing, 43-inner shaft, 431-shaft disk portion, 44-outer shaft, 441-chuck portion, 442-convex disc portion, 45-worm, 46-worm gear, 47-motor, 48-end face gear, 49-limiting pin, 491-connecting portion, 492-limiting portion, 493-unlocking hole, 50-spring, 51-limiting block, 511-limiting groove, 52-stop plate, 53-pressing ring, 54-pressing cover, 55-locking cover, 551-through hole, 56-sealing groove, 57-first photoelectric switch, 58-second photoelectric switch, 59-limiting pin, 6-annular groove. DETAILED DESCRIPTION

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0030] Please refer to Figure 1-7The present invention provides a multifunctional unlocking mechanism for a vehicle-mounted photoelectric turntable, comprising: a head assembly 1, an azimuth turntable 2, a pitch frame 3 and a locking mechanism 4, wherein the azimuth turntable 2 is provided with a pitch frame 3 for driving rotation (that is, the driving shaft end of the azimuth turntable 2 is connected to the bottom axis of the pitch frame 3 to drive the pitch frame 3 to move in a circle), the head assembly 1 is installed on the pitch frame 3 through a rotating shaft, and the locking mechanism 4 comprises: a support 41, a bearing 42, an inner shaft 43, an outer shaft 44, a worm 45, a worm gear 46, a motor 47, an end face tooth 48, a limiting pin 49, a spring 50 and a limiting block 51; a support 41 is installed inside the bottom wall of the pitch frame 3, an outer shaft 44 is installed in the axial hole of the support 41 through a bearing 42, an inner shaft 43 is slidably inserted in the hollow hole of the outer shaft 44, and the top end face of the outer shaft 44 is meshed with the end face tooth 48. The inner shaft 43 and the outer shaft 44 are embedded in the worm gear 46, the worm gear 46 is meshed with the worm 45, the motor 47 is installed on the support 41, and the output end of the motor 47 is provided with a worm 45. The upper and lower ends of the inner shaft 43 are respectively removably locked with the limit pins 49 by screws, and the spring 50 is sleeved on the inner shaft 43 so that the upper end of the spring 50 abuts against the bottom end of the outer shaft 44 and the lower end abuts against the upper end of the lower limit pin 49. The bottom of the head assembly 1 and the top of the azimuth turntable 2 are respectively provided with limit blocks 51 (here the lower limit block 51 is specifically arranged on the top shell of the azimuth turntable 2 when connected to the azimuth turntable 2, and the driving shaft end of the azimuth turntable 2 is connected to the pitch frame 3, which can drive the pitch frame 3 to move in the circumferential azimuth direction without driving the lower limit block 51 to move), which are respectively used to cooperate with the upper and lower limit pins 49 for limiting.

[0031] like Figure 5 As shown, the axial hole of the support 41 further includes an integrally formed stop plate 52 , and the top and bottom of the stop plate 52 are respectively abutted against the bearing 42 .

[0032] The locking mechanism 4 also includes a pressure ring 53, a clamping cover 54, a locking cover 55 and a sealing groove 56; the top of the support 41 is detachably locked with a locking cover 55, and a through hole 551 is provided at the top axis of the locking cover 55 for the upper end of the inner shaft 43 to pass through. The bottom of the lower side bearing 42 is sequentially abutted with the pressure ring 53 and the clamping cover 54 from top to bottom. The clamping cover 54 is locked with the bottom axial hole of the support 41 through a thread, and sealing grooves 56 are respectively provided on the circumferential surfaces of the through hole 551 and the clamping cover 54, and a rubber sealing ring is provided in the sealing groove 56.

[0033] like Figure 6As shown, the upper part of the inner shaft 43 also includes an integrally formed shaft disc portion 431, and the upper part of the outer shaft 44 also includes an integrally formed chuck portion 441, and the top of the chuck portion 441 is axially provided with a cam portion 442, and the bottom of the shaft disc portion 431 and the top of the cam portion 442 are respectively provided with meshing end face teeth 48, and the top of the worm gear 46 also includes a slot, and the chuck portion 441 is pressed and embedded in the slot, and at the same time, the upper bearing 42 is pressed by the chuck portion 441.

[0034] like Figure 4 As shown, the locking mechanism 4 also includes a first photoelectric switch 57, a second photoelectric switch 58 and a limit pin 59; the first photoelectric switch 57 and the second photoelectric switch 58 are installed at 90° on the top of the support 41, and the limit pin 59 is installed on the top of the chuck part 441, and the limit pin 59 is arranged in an L-shaped structure.

[0035] like Figure 7 As shown, the limit block 51 is a disc-shaped structure with a limit slot 511 formed on the top of the limit block 51. The limit slot 511 includes a circular slot located in the axial direction and strip slots extending through the circular slot on both sides. The strip slots in the upper and lower limit slots 511 are respectively formed in the same direction and parallel to each other.

[0036] The limiting pin 49 includes a connecting portion 491 at the top and a limiting portion 492 at the bottom; a locking hole 493 is provided on the side wall of the connecting portion 491 in the lower side limiting pin 49 to facilitate the insertion of an external disassembly rod; among the four side wall surfaces of the limiting portion 492, two opposite side wall surfaces are flat end surfaces, and the other two opposite side wall surfaces are arc-shaped surfaces, so that the limiting portion 492 can adapt to the circular groove for limiting.

[0037] The annular groove 6 is also provided to facilitate the installation of the locking mechanism 4. Specifically, when the azimuth turntable 2 rotates, it drives the locking mechanism 4 to rotate synchronously, allowing the lower limit pin 49 to perform a circular motion within the annular groove 6. The annular groove 6 provides a clearance for the lower limit pin 49 to perform the circular motion, and the lower limit block 51 is fixed within the annular groove 6 without displacement.

[0038] A certain distance is maintained between the ends of the limit pins 49 on the upper and lower sides and the bottom of the limit grooves 511 on the upper and lower sides, so that when in the manual unlocking mode, the external disassembly rod is inserted to drive the inner shaft 43 and its limit pins 49 to move upward. This distance should be the axial avoidance space when the inner shaft 43 moves upward.

[0039] When the embodiment of the present invention is used specifically, it also includes: the locking motor 47 is divided into automatic mode and manual mode when it is implemented. Under normal circumstances, the locking mechanism 4 is in automatic mode. When the equipment cannot provide power supply, the manual mode can be used to complete the unlocking.

[0040] After the pitch and azimuth of the pitch frame 3 are reset to zero, when the locking mechanism 4 needs to be locked, the motor 47 drives the worm 45, which in turn rotates the worm gear 46. The worm gear 46 is rigidly connected to the outer shaft 44, causing the outer shaft 44 to rotate simultaneously. Because the outer shaft 44 meshes with the inner shaft 43 via the end teeth 48, and a spring 50 is located below, the inner shaft 43 also rotates with it. This rotation of the inner shaft 43 drives the stop pin 49. During this rotation, the stop pin 59 moves out of the second photoelectric switch 58 and into the first photoelectric switch 57, whereupon the motor 47 stops. At this point, the stop pin 49 cannot escape the stop block 51, and the locking mechanism 4 is locked. To unlock, the above steps are reversed.

[0041] When unlocked, the relationship between the limit pin 49 and the limit groove 511 on the limit block 51 should be: the flat end surface side wall of the limit pin 49 is parallel to the strip groove of the limit groove 511, that is, the limit pin 49 can slide out of the limit groove 511 at this time, and when locked, the arcuate side wall of the limit pin 49 intersects the strip groove at 90°, that is, the arcuate side wall of the limit pin 49 is in the same direction as the circular groove, so that the limit pin 49 cannot slide out of the strip groove.

[0042] When the device cannot be powered, it can be manually unlocked. When it needs to be unlocked, the disassembly rod with a rod-like exterior is inserted into the disassembly hole, and the inner shaft 43 is pulled upward to overcome the force of the spring 50, so that the outer shaft 44 is disengaged from the end face teeth 48 of the inner shaft 43. At this time, the inner shaft 43 can be rotated so that the limit pin 49 is disengaged and cannot be disengaged from the limit block 51, and the manual unlocking is completed.

[0043] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A multifunctional unlocking mechanism for a vehicle-mounted photoelectric turntable, comprising: A head assembly (1), an azimuth turntable (2), a pitch frame (3) and a locking mechanism (4), wherein the azimuth turntable (2) is provided with the pitch frame (3) for driving rotation, and the head assembly (1) is installed on the pitch frame (3) through a rotating shaft, and is characterized in that the locking mechanism (4) comprises: a support (41), a bearing (42), an inner shaft (43), an outer shaft (44), a worm (45), a worm wheel (46), a motor (47), an end face tooth (48), a limit pin (49), a spring (50) and a limit block (51); the support (41) is installed inside the bottom wall of the pitch frame (3), the outer shaft (44) is installed in the axial hole of the support (41) through the bearing (42), the inner shaft (43) is slidably inserted in the hollow hole of the outer shaft (44), and the top of the outer shaft (44) is fixed to the support (41). The end face of the inner shaft (43) is meshed with the end face teeth (48), and the outer shaft (44) is embedded in the worm wheel (46), and the worm wheel (46) is meshed with the worm (45). The motor (47) is installed on the support (41), and the output end of the motor (47) is provided with the worm (45). The upper and lower ends of the inner shaft (43) are detachably locked with the limiting nails (49) by screws. The spring (50) is sleeved on the inner shaft (43) so that the upper end of the spring (50) abuts against the bottom end of the outer shaft (44) and the lower end abuts against the upper end of the limiting nail (49) on the lower side. The bottom of the head assembly (1) and the top of the azimuth turntable (2) are respectively provided with the limiting blocks (51), which are respectively used to cooperate with the limiting nails (49) on the upper and lower sides for limiting. The axial hole of the support (41) further includes a stopper plate (52) integrally formed therein, and the top and bottom of the stopper plate (52) are respectively abutted against the bearing (42); The upper part of the inner shaft (43) also includes an integrally formed shaft disc portion (431), the upper part of the outer shaft (44) also includes an integrally formed chuck portion (441), and the top of the chuck portion (441) is axially provided with a cam portion (442), the bottom of the shaft disc portion (431) and the top of the cam portion (442) are respectively provided with meshing end face teeth (48), the top of the worm gear (46) also includes a slot, the chuck portion (441) is pressed and embedded in the slot, and at the same time, the upper bearing (42) is pressed by the chuck portion (441).

2. The multifunctional unlocking mechanism for a vehicle-mounted photoelectric turntable according to claim 1, characterized in that: The locking mechanism (4) further comprises a pressure ring (53), a pressing cover (54), a locking cover (55) and a sealing groove (56); the top of the support (41) is detachably locked with the locking cover (55); a through hole (551) is provided at the top axis of the locking cover (55) for the upper end of the inner shaft (43) to pass through; the bottom of the lower side bearing (42) is sequentially abutted with the pressure ring (53) and the pressing cover (54) from top to bottom; the pressing cover (54) is locked with the bottom axial hole of the support (41) through a thread; the sealing groove (56) is respectively provided on the circumferential surface of the through hole (551) and the pressing cover (54); a rubber sealing ring is provided in the sealing groove (56).

3. The multifunctional unlocking mechanism for a vehicle-mounted photoelectric turntable according to claim 1, characterized in that: The locking mechanism (4) further comprises a first photoelectric switch (57), a second photoelectric switch (58) and a limit pin (59); the first photoelectric switch (57) and the second photoelectric switch (58) are installed at 90 degrees on the top of the support (41), the limit pin (59) is installed on the top of the chuck portion (441), and the limit pin (59) is arranged in an L-shaped structure.

4. The multifunctional unlocking mechanism for a vehicle-mounted photoelectric turntable according to claim 1, characterized in that: The limiting block (51) is provided in a disc-shaped structure, and a limiting groove (511) is provided on the top of the limiting block (51), wherein the limiting groove (511) comprises a circular groove in the axial direction and strip grooves distributed on both sides of the circular groove and penetrating therethrough.

5. The multifunctional unlocking mechanism for a vehicle-mounted photoelectric turntable according to claim 4, characterized in that: The strip grooves in the upper and lower limiting grooves (511) are respectively opened in parallel in the same direction.

6. The multifunctional unlocking mechanism for a vehicle-mounted photoelectric turntable according to claim 4, characterized in that: The limiting nail (49) includes a connecting portion (491) at the top and a limiting portion (492) at the bottom; a locking hole (493) is provided on the side wall of the connecting portion (491) in the lower side limiting nail (49) to facilitate the insertion of an external disassembly rod; among the four side wall surfaces of the limiting portion (492), two opposite side wall surfaces are arranged as flat end surfaces, and the other two opposite side wall surfaces are arranged as arc-shaped surfaces, so that the limiting portion (492) and the circular groove are adapted to limit the position.

7. The multifunctional unlocking mechanism for a vehicle-mounted photoelectric turntable according to claim 4, characterized in that: It also includes an annular groove (6) to facilitate the installation of the locking mechanism (4).

8. The multifunctional unlocking mechanism for a vehicle-mounted photoelectric turntable according to claim 4, characterized in that: A certain distance is maintained between the ends of the upper and lower limiting pins (49) and the bottoms of the upper and lower limiting grooves (511).

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