An internal locking device for a vehicle-mounted observation mirror turntable

Abstract

The present invention relates to the technical field of vehicle-mounted observation mirror turntables, and particularly relates to an internal locking device for a vehicle-mounted observation mirror turntable, which includes: a head housing, a pitching bracket, a side cover plate, and a locking mechanism. The head housing is installed on the pitching bracket through a rotating shaft, and the side cover plate is installed on the side wall of the pitching bracket through screws. That is, the internal cavity of the above-mentioned side cover plate and the pitching bracket constitutes the installation space of the locking mechanism, so that the bolt is located in the sealed installation space. The locking mechanism includes: a locking cylinder base, an outer ring of the locking motor, a bolt, a driving cylinder, an inner ring of the locking motor, a square guide groove, and a limit seat; the locking cylinder base is installed at the shaft end of the rotating shaft of the head housing through screws, the outer ring of the locking motor is installed in the locking cylinder base through screws, and a square guide groove is axially opened on the left side wall of the locking cylinder base; The present invention provides an internal locking device for a vehicle-mounted observation mirror turntable, which has the advantages of high sealing performance, high convenience, good maintainability, high position accuracy, and good locking effect.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle-mounted observation mirror turntables, and particularly to an internal locking device for a vehicle-mounted observation mirror turntable. Background Art

[0002] With the widespread application of vehicle-mounted observation and aiming mirrors in various heavy and light vehicles in our country, the observation mirror turntable plays the role of eyes and plays a crucial role. Most modern vehicle-mounted observation mirrors adopt a servo system with azimuth and elevation rotation to achieve a larger observation range. The vehicle-mounted observation mirror mainly includes an elevation bracket, a head housing, and an azimuth component. The head housing can rotate within the elevation bracket and the elevation bracket and the head housing can rotate on the azimuth component through a motor. When the vehicle-mounted observation mirror is working, the position of the observation mirror can be controlled after the motor is powered on; when the observation mirror is in a non-working state, the observation mirror needs to return to the set position and be locked, and needs to be unlocked during work.

[0003] Generally speaking, the usage environments of various vehicle equipment are quite harsh. When the vehicle is driving on rough ground, it will cause the head of the observation mirror to move up and down and left and right. Long-term impacts and shakes will damage various precision optical instruments installed inside the vehicle-mounted observation mirror, greatly reducing the reliability of the observation mirror. Therefore, the locking device solves such problems and can lock the observation mirror when it is in a non-working state to prevent the shaking and sagging of the observation mirror in the non-working state. However, most traditional elevation locking mechanisms of observation mirrors are electric drive mechanical locking structures installed inside the elevation bracket; when the locking mechanism is working, a section of the bolt will be exposed outside, which will cause corrosion after long-term use. Similar locking mechanisms are mostly sealed by rubber rings, and the sealing performance will be greatly reduced after long-term use, resulting in water ingress into the equipment. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the present invention provides an internal locking device for a vehicle-mounted observation mirror turntable, which has the advantages of high sealing performance, high convenience, good maintainability, high position accuracy, and good locking effect.

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

[0006] An internal locking device for a vehicle-mounted observation mirror turntable, comprising: a head housing, a pitching bracket, a side cover plate and a locking mechanism. The head housing is mounted on the pitching bracket through a rotating shaft. The side cover plate is mounted on the side wall of the pitching bracket through screws. The locking mechanism includes: a locking cylinder seat, an outer locking motor ring, a bolt, a driving cylinder, an inner locking motor ring, a square guiding groove and a limiting seat. The locking cylinder seat is mounted on the shaft end of the rotating shaft of the head housing through screws. The outer locking motor ring is mounted in the locking cylinder seat through screws. The square guiding groove is axially formed on the left side wall of the locking cylinder seat. The bolt is coaxially mounted in the locking cylinder seat, and the left end of the bolt is inserted into the square guiding groove. The driving cylinder is threadedly sleeved on the middle part of the bolt. The outer wall of the driving cylinder is mounted with the inner locking motor ring through screws. The outer locking motor ring and the inner locking motor ring are coaxially arranged. The limiting seat is mounted on the side cover plate through screws, and the bolt can be inserted into the limiting seat when moving rightward.

[0007] Preferably, the bolt includes: a guiding boss, a limiting ring, a threaded part and a limiting boss. The guiding boss is integrally formed and sequentially connected with the limiting ring, the threaded part and the limiting boss at the right end. The guiding boss is slidably inserted into the square guiding groove. The limiting boss is slidably inserted into the square limiting groove formed on the limiting seat.

[0008] Preferably, the ends of the guiding boss and the limiting boss, and the openings of the square guiding groove and the square limiting groove are all provided with rounded corner structures.

[0009] Preferably, the locking mechanism further includes: a limiting pin, a photoelectric switch and a weight reduction groove. An installation hole is formed in the upper part of the limiting ring. The limiting pin is mounted on the limiting ring through the installation hole. The upper part of the inner cavity of the locking cylinder seat further includes two horizontally spaced photoelectric switches. The upper end of the limiting pin is located within the stroke of the two photoelectric switches. The left end of the locking cylinder seat further includes a weight reduction groove formed, and the weight reduction groove is in a ring shape and is located outside the square guiding groove.

[0010] Preferably, an installation cavity is formed on the right side wall of the pitching bracket, and a turntable pitching motor is mounted in the installation cavity.

[0011] The present invention has the following beneficial effects:

[0012] 1. High sealing performance: The locking device of the present invention is enclosed inside the pitching bracket. By using the sealing of the bracket and the side cover plate, it has good sealing compared with the traditional locking mechanism.

[0013] 2. High convenience and good maintainability: The locking device of the present invention locks with the side cover plate of the bracket. If a fault occurs in the locking device, the side cover plate can be removed to unlock it.

[0014] 3. High position accuracy: The locking device of the present invention adopts a threaded drive method, combined with a square guide and a rounded corner structure, and has high position accuracy during the unlocking and locking processes, greatly improving the locking rate.

[0015] 4. Good locking effect: The locking device of the present invention adopts the design of a bolt and a square limiting groove. All the resistance generated during locking is on the side cover plate of the pitching bracket and the bolt, and there is no acting force on the locking device motor, etc. After locking, the shaking clearance is small. Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0017] Figure 1 It is a three-dimensional model structure diagram of the vehicle-mounted sight turntable according to the embodiment of the present invention.

[0018] Figure 2 It is a perspective view of the locking mechanism and the side cover plate according to the embodiment of the present invention.

[0019] Figure 3 It is a cross-sectional view of the head housing, the locking mechanism and the side cover plate according to the embodiment of the present invention.

[0020] Figure 4 It is a cross-sectional view of the locking mechanism according to the embodiment of the present invention.

[0021] Figure 5 It is a structure diagram of the bolt according to the embodiment of the present invention.

[0022] In the figure: 1 - head housing, 2 - pitching bracket, 3 - side cover plate, 4 - locking mechanism, 41 - locking cylinder seat, 42 - outer ring of locking motor, 43 - bolt, 431 - guiding boss, 432 - limiting ring, 433 - threaded part, 434 - limiting boss, 44 - driving cylinder, 45 - inner ring of locking motor, 46 - square guiding groove, 47 - limiting seat, 471 - square limiting groove, 48 - limiting pin, 481 - mounting hole, 49 - photoelectric switch, 50 - weight reduction groove, 5 - mounting cavity. Detailed Embodiments

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0024] Please refer to Figures 1-5 , the present invention provides an internal locking device for a vehicle-mounted observation mirror turntable, including: a head housing 1, a pitching bracket 2, a side cover plate 3, and a locking mechanism 4. The head housing 1 is installed on the pitching bracket 2 through a rotating shaft, and the side cover plate 3 is installed on the side wall of the pitching bracket 2 through screws. That is, the internal cavity of the side cover plate 3 and the pitching bracket 2 constitutes the installation space of the locking mechanism 4, so that the bolt 43 is located in the sealed installation space. The locking mechanism 4 includes: a locking cylinder base 41, a locking motor outer ring 42, a bolt 43, a driving cylinder 44, a locking motor inner ring 45, a square guide groove 46, and a limit seat 47. The locking cylinder base 41 is installed at the shaft end of the rotating shaft of the head housing 1 through screws. The locking motor outer ring 42 is installed in the locking cylinder base 41 through screws. A square guide groove 46 is axially opened on the left side wall of the locking cylinder base 41. The bolt 43 is coaxially installed in the locking cylinder base 41, and the left end of the bolt 43 is inserted into the square guide groove 46. A driving cylinder 44 is threadedly sleeved on the middle part of the bolt 43. The outer wall of the driving cylinder 44 is installed with a locking motor inner ring 45 through screws. The locking motor outer ring 42 and the locking motor inner ring 45 are coaxially arranged. The limit seat 47 is installed on the side cover plate 3 through screws, and the bolt 43 can be inserted into the limit seat 47 when moving to the right.

[0025] As Figure 5 shown, in the embodiment of the present invention, the bolt 43 includes: a guiding boss 431, a limiting ring 432, a threaded part 433, and a limiting boss 434. The right end of the guiding boss 431 is integrally formed and sequentially connected with the limiting ring 432, the threaded part 433, and the limiting boss 434. The guiding boss 431 is slidably inserted into the square guide groove 46, and the limiting boss 434 is slidably inserted into the square limiting groove 471 opened on the limit seat 47. The ends of the guiding boss 431 and the limiting boss 434, and the openings of the square guide groove 46 and the square limiting groove 471 are all provided with rounded corner structures.

[0026] As Figure 4As shown, the locking mechanism 4 further includes: a limit pin 48, a photoelectric switch 49, and a weight-reducing groove 50; an installation hole 481 is provided in the upper part of the limit ring 432, the limit pin 48 is installed on the limit ring 432 through the installation hole 481, and the upper part of the inner cavity of the locking cylinder base 41 further includes two horizontally spaced photoelectric switches 49, and the upper end of the limit pin 48 is within the stroke of the two photoelectric switches 49; the left end of the locking cylinder base 41 further includes a weight-reducing groove 50, the weight-reducing groove 50 is arranged as an annular groove and is located outside the square guide groove 46.

[0027] As Figure 3 As shown, an installation cavity 5 is provided in the right side wall of the pitching bracket 2, and a turntable pitching motor is installed in the installation cavity 5. That is, the rotating shaft of the head housing 1 is successively provided with a turntable pitching motor and a locking mechanism 4 from left to right. Substantially, the rotor of the turntable pitching motor is sleeved and connected to the rotating shaft of the head housing 1, and the locking mechanism 4 is connected to the right end of the rotating shaft through the locking cylinder base 41.

[0028] When the embodiment of the present invention is specifically used, it further includes: when it is necessary to lock the observation mirror, the locking motor rotates to make the inner ring 45 of the locking motor rotate, and drives the driving cylinder 44 to rotate. Under the action of the thread force transmission between the driving cylinder 44 and the threaded part 433 of the bolt 43, since the guiding boss 431 of the bolt 43 is in the square guide groove 46, the bolt 43 axially moves along the square guide groove 46 towards the side cover plate 3. When the limit pin 48 touches the right photoelectric switch 49, the locking motor stops rotating after receiving the signal, and the bolt 43 stops moving. At this time, the limit boss 434 at the right end of the bolt 43 enters the square limit groove 471 of the limit seat 47, and at this time the locking device is locked. When the observation mirror needs to be unlocked, the steps are opposite to the locking steps. When the limit pin 48 touches the left photoelectric switch 49, the locking motor stops rotating after receiving the signal, and the bolt 43 stops moving. At this time, the limit boss 434 at the right end of the bolt 43 disengages from the square limit groove 471 of the limit seat 47, and at this time the locking device is unlocked.

[0029] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. An internal locking device for a vehicle-mounted observation mirror turntable, comprising: A head housing (1), a pitching bracket (2), a side cover plate (3), and a locking mechanism (4), characterized in that the head housing (1) is mounted on the pitching bracket (2) through a rotating shaft, the side cover plate (3) is mounted on the side wall of the pitching bracket (2) through screws, and the locking mechanism (4) includes: a locking cylinder seat (41), an outer locking motor ring (42), a bolt (43), a driving cylinder (44), an inner locking motor ring (45), a square guiding groove (46), and a limiting seat (47); the locking cylinder seat (41) is mounted on the shaft end of the rotating shaft of the head housing (1) through screws, the outer locking motor ring (42) is mounted in the locking cylinder seat (41) through screws, the square guiding groove (46) is axially formed in the left side wall of the locking cylinder seat (41), the bolt (43) is coaxially mounted in the locking cylinder seat (41), and the left end of the bolt (43) is inserted into the square guiding groove (46), a driving cylinder (44) is threadedly sleeved on the middle part of the bolt (43), the outer wall of the driving cylinder (44) is mounted with the inner locking motor ring (45) through screws, the outer locking motor ring (42) and the inner locking motor ring (45) are coaxially arranged, the limiting seat (47) is mounted on the side cover plate (3) through screws, and the bolt (43) can be inserted into the limiting seat (47) when moving rightward; The bolt (43) includes: a guiding boss (431), a limiting ring (432), a threaded part (433), and a limiting boss (434); the guiding boss (431) is integrally formed and sequentially connected with the limiting ring (432), the threaded part (433), and the limiting boss (434) at the right end, the guiding boss (431) is slidably inserted into the square guiding groove (46), and the limiting boss (434) is slidably inserted into a square limiting groove (471) formed on the limiting seat (47); An installation cavity (5) is formed in the right side wall of the pitching bracket (2), and a turntable pitching motor is installed in the installation cavity (5).

2. The internal locking device of a vehicle-mounted observation mirror turntable according to claim 1, characterized in that, The ends of the guiding boss (431) and the limiting boss (434), and the openings of the square guiding groove (46) and the square limiting groove (471) are all provided with rounded corner structures.

3. The internal locking device of a vehicle-mounted observation mirror turntable according to claim 1, characterized in that, The locking mechanism (4) further includes: a limiting pin (48), a photoelectric switch (49), and a weight reduction groove (50); an installation hole (481) is formed in the upper part of the limiting ring (432), the limiting pin (48) is installed on the limiting ring (432) through the installation hole (481), two photoelectric switches (49) are horizontally and spaced apart in the upper part of the inner cavity of the locking cylinder seat (41), and the upper end of the limiting pin (48) is within the stroke of the two photoelectric switches (49); a weight reduction groove (50) is further formed in the left end of the locking cylinder seat (41), the weight reduction groove (50) is formed as an annular groove and is located outside the square guiding groove (46).

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