Vehicle-mounted outer support arm

Abstract

The utility model discloses a vehicle-mounted outer supporting arm which comprises a mirror base and a mirror arm lower shell, a rotating base is arranged on the mirror base, a rotating arm is arranged on the mirror arm lower shell, and the rotating arm is located above the rotating base. A first rotating groove is formed in the top of the rotating seat, a plurality of inclined plane grooves are uniformly distributed in the inner edge of the first rotating groove, the side surfaces of the inclined plane grooves are inclined planes, a first annular groove is coaxially formed in the outer edge of the first rotating groove, and a first stop block is arranged in the first annular groove; a second rotating groove is formed in the bottom of the rotating arm, a plurality of inclined plane bosses are evenly distributed on the edge in the second rotating groove, the side faces of the inclined plane bosses are inclined planes, a second annular groove is coaxially formed in the edge outside the second rotating groove, and a second check block is arranged in the second annular groove. According to the utility model, the structural design is reasonable, and the rebounding force of the first elastic piece and the second elastic piece resets to the initial state after the lower shell of the mirror arm rotates.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle-mounted external support arms, in particular to a vehicle-mounted external support arm. Background Art

[0002] CMS (Camera Mi rror System) is a system composed of cameras and monitors for providing indirect vision, providing the driver with the required vision behind, to the side or in front of the vehicle while driving. At the same time, CMS can provide a wider field of view than traditional optical reflectors, reduce blind spots, reduce the wind resistance of the whole vehicle, and also have a good field of view under adverse driving conditions such as night, rain and snow. The folding of the outer arm of CMS for commercial vehicles mainly includes manual folding and electric folding. Since the installation height of the outer arm of commercial vehicles is relatively high, if the outer arm collides with an obstacle during driving, the position of the camera in the outer arm deviates from the designed position, and the folding function of the traditional rearview mirror cannot be automatically reset. At this time, the field of view of CMS changes, and the outer arm is in a position that the driver cannot directly observe, and it is impossible to feedback whether the driver's current field of view meets driving safety. There are safety hazards and traffic accidents are prone to occur. Utility Model Content

[0003] The utility model aims to provide a vehicle-mounted outer support arm, so that the mirror arm can be self-reset after being rotated and folded, thereby improving driving safety.

[0004] In order to achieve the above-mentioned purpose, the technical solution of the utility model provides a vehicle-mounted external support arm, including a mirror seat and a mirror arm lower shell, the mirror seat is provided with a rotating seat, the mirror arm lower shell is provided with a rotating arm, and the rotating arm is located above the rotating seat; the top of the rotating seat is provided with a first rotating groove, the edge of the first rotating groove is evenly distributed with a plurality of inclined grooves, the side of the inclined groove is an inclined surface, the edge outside the first rotating groove is provided with a coaxially arranged first annular groove, and the first annular groove is provided with a first stopper; the bottom of the rotating arm is provided with a second rotating groove, the edge of the second rotating groove is evenly distributed with a plurality of inclined bosses, the side of the inclined boss is an inclined surface, the edge outside the second rotating groove is provided with a coaxially arranged second annular groove, and the second annular groove is provided with a second stopper; The rotating arm can rotate around the vertical center line of the rotating seat, and the rotating arm can move up and down relative to the rotating seat. A second elastic member is provided above the rotating arm, and the second elastic member can apply a downward elastic force to the rotating arm to make the rotating arm close to the rotating seat; the first rotating groove cooperates with the second rotating groove, and the first annular groove cooperates with the second annular groove, and a plurality of the inclined bosses can respectively position and cooperate with a plurality of the inclined grooves downward; a first elastic member is installed between the first annular groove and the second annular groove, and when the rotating arm rotates around the vertical center line of the rotating seat, the first stop block and the second stop block can jointly compress the first elastic member, and a plurality of the inclined bosses can respectively disengage from a plurality of the inclined grooves upward.

[0005] Furthermore, a rotating hole is provided in the middle of the first rotating groove, and a rotating shaft is provided in the middle of the second rotating groove. The rotating shaft is inserted downward into the rotating hole, and the rotating shaft is rotationally matched with the rotating hole and can be movably matched up and down.

[0006] Furthermore, the rotating hole passes downward through the bottom of the rotating seat, and a flange nut is provided at the bottom of the rotating seat; the rotating shaft passes upward through the top of the rotating arm, and the second elastic member, a gasket, and a bolt are sequentially provided above the rotating arm, the second elastic member is a compression spring, the compression spring is sleeved on the outer circumference of the rotating shaft, and the gasket is located above the rotating shaft; the screw rod of the bolt passes downward through the gasket, the rotating shaft, and the rotating hole in sequence and is threadedly connected to the flange nut, the edge of the gasket presses downward on the top of the compression spring, and there is space between the gasket and the rotating seat for the rotating arm to move up and down.

[0007] Furthermore, an annular plate protruding upward is provided on the top of the rotating arm, the annular plate is located on the outer edge of the rotating shaft and is coaxially arranged, and the compression spring is sleeved between the rotating shaft and the annular plate.

[0008] Furthermore, the side wall of the second rotating groove protrudes downward from the side wall of the second annular groove, the side wall of the second rotating groove is downwardly inserted into the first rotating groove, and the bottom of the side wall of the second annular groove is downwardly butted against the top of the side wall of the first annular groove; a horizontally arranged plane is provided between two adjacent inclined grooves, and a horizontally arranged plane is provided between two adjacent inclined bosses, and the bottom surfaces of the inclined grooves and the bottom surfaces of the inclined bosses are horizontally arranged planes.

[0009] Further, the first elastic member is a return spring, two first blocks are provided in the first annular groove, and two second blocks are provided in the second annular groove, and the two first blocks can correspond to the two second blocks respectively up and down; two return springs are installed between the first annular groove and the second annular groove, and the first block and the second block are separated from the two return springs.

[0010] Furthermore, a first arc-shaped concave surface and a first arc-shaped convex surface are respectively provided on the upper left and right sides of the rotating seat, and a second arc-shaped convex surface and a second arc-shaped concave surface are respectively provided on the left and lower right sides of the rotating arm, and the first arc-shaped concave surface cooperates with the second arc-shaped convex surface, and the first arc-shaped convex surface cooperates with the second arc-shaped concave surface.

[0011] Furthermore, a mounting groove is provided at the upper right end of the rotating seat, a micro switch is installed in the mounting groove, and a V-shaped groove is provided on the right side of the rotating arm; the contact end of the micro switch is in close contact with the V-shaped groove upward, and the micro switch can be triggered when the rotating arm rotates around the vertical center line of the rotating seat.

[0012] Furthermore, a plurality of mounting holes are provided on the mirror base, the lower shell of the mirror arm is horizontally curved, and a camera is mounted on one end of the lower shell of the mirror arm away from the rotating arm.

[0013] Furthermore, an upper shell of the mirror arm is mounted above the lower shell of the mirror arm, and the upper shell of the mirror arm is fixed to the lower shell of the mirror arm by a buckle; a mirror base decorative cover is mounted below the mirror base, and the mirror base is fixed to the mirror base decorative cover by a buckle.

[0014] In summary, the technical solution of the utility model has the following beneficial effects: the structural design of the utility model is reasonable, (1) by including a mirror base and a mirror arm lower shell, a rotating base is provided on the mirror base, a rotating arm is provided on the mirror arm lower shell, and the rotating arm is located above the rotating base; thereby, the rotating base and the mirror arm lower shell can be rotated and matched with each other as well as the upper and lower matching. (2) a first rotating groove is provided on the top of the rotating base, a plurality of inclined grooves are evenly distributed on the edge of the first rotating groove, the side of the inclined groove is an inclined surface, a first annular groove is coaxially arranged on the edge outside the first rotating groove, and a first stopper is provided in the first annular groove; a second rotating groove is provided on the bottom of the rotating arm, a plurality of inclined bosses are evenly distributed on the edge of the second rotating groove, the side of the inclined boss is an inclined surface, a second annular groove is coaxially arranged on the edge outside the second rotating groove, and a second stopper is provided in the second annular groove; the rotating arm can rotate around the vertical center line of the rotating base, and the rotating arm can move up and down relative to the rotating base, and a second elastic member is provided on the top of the rotating arm, and the second elastic member is provided on the top of the rotating arm. The elastic member can exert a downward elastic force on the rotating arm to make the rotating arm approach the rotating seat; the first rotating groove cooperates with the second rotating groove, the first annular groove cooperates with the second annular groove, and a plurality of inclined bosses can be respectively positioned downward with a plurality of inclined grooves; thus, in the initial state, the lower shell of the mirror arm and the mirror seat are pressed tightly under the elastic force of the second elastic member, and a plurality of inclined bosses are respectively positioned downward with a plurality of inclined grooves, and the rotation of the lower shell of the mirror arm needs to overcome the elastic force of the second elastic member to "climb the slope", and the elastic force of the second elastic member increases, which is similar to the meshing of gears, thereby realizing the positioning and cooperation of the rotating arm and the rotating seat, thereby avoiding the shaking of the mirror seat and the lower shell of the mirror arm during driving. (3) The first elastic member is installed between the first annular groove and the second annular groove. When the rotating arm rotates around the vertical center line of the rotating seat, the first stopper and the second stopper can jointly compress the first elastic member, and the plurality of inclined bosses can respectively disengage from the plurality of inclined grooves upward; thus, when the external force works to fold and rotate the lower shell of the mirror arm, the first elastic member is jointly compressed by the first stopper and the second stopper and the elastic potential energy will gradually increase. At the same time, the inclined surface of the inclined boss begins to slide in contact with the inclined surface of the inclined groove, and the elastic potential energy of the second elastic member will gradually increase. When the inclined boss disengages from the inclined groove upward, the positioning fit between the rotating arm and the rotating seat disappears, and the lower shell of the mirror arm can continue to rotate. After the external force disappears, the compressed first elastic member and the second elastic member will rebound, and the lower shell of the mirror arm will rebound to the initial state. From this analysis, it can be seen that when the mirror arm (i.e., the lower shell of the mirror arm) collides, rotates, folds, and moves upward, it can self-reset to its initial state through the rebound force of the first elastic member and the second elastic member, thereby improving driving safety, and the structure is simple, reliable, and low-cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the explosion structure of the utility model;

[0016] Figure 2 yes Figure 1 Magnified image of the upper side;

[0017] Figure 3 yes Figure 1 A magnified view of the lower side;

[0018] Figure 4 It is a top view of the stereoscopic structure of the mirror base of the utility model;

[0019] Figure 5 It is a bottom-up three-dimensional structural schematic diagram of the lower shell of the mirror arm of the utility model;

[0020] Figure 6 It is a schematic diagram of the cross-sectional structure of the inclined surface groove and the inclined surface boss of the utility model when they are positioned and matched;

[0021] Figure 7 It is a top view of the three-dimensional structure of the mirror holder of the utility model when it cooperates with the first elastic member;

[0022] Figure 8 It is a schematic cross-sectional structure diagram of the first elastic member of the utility model when it cooperates with the first stopper and the second stopper;

[0023] Fig. 9 It is a schematic diagram of the cross-sectional structure of the micro switch of the utility model when it is matched with the V-shaped groove;

[0024] Fig.10 It is a top view of the three-dimensional structure of the utility model when the upper shell of the mirror arm is removed;

[0025] Fig.11 This is a schematic diagram of the three-dimensional structure when the mirror base is removed when viewed from above;

[0026] Fig.12 It is a top view of the three-dimensional structure of the utility model when the upper shell of the mirror arm and the lower shell of the mirror arm are removed;

[0027] Fig.13 It is a schematic diagram of the upward-looking three-dimensional structure of the mirror base of the utility model;

[0028] Fig.14 It is a three-dimensional structural schematic diagram of the first viewing angle of the utility model;

[0029] Fig.15 It is a schematic diagram of the three-dimensional structure of the utility model from a second viewing angle;

[0030] Explanation of the reference numerals: 1-mirror base, 2-mirror arm lower shell, 3-first elastic member, 4-second elastic member, 5-gasket, 6-bolt, 7-flange nut, 8-micro switch, 9-camera, 10-mirror arm upper shell, 11-mirror base decorative cover.

[0031] 101-rotating seat, 102-first rotating groove, 103-inclined groove, 104-first annular groove, 105-first stopper, 106-rotating hole, 107-first arcuate concave surface, 108-first arcuate convex surface, 109-mounting groove, 110-mounting hole; 201-rotating arm, 202-second rotating groove, 203-inclined boss, 204-second annular groove, 205-second stopper, 206-rotating shaft, 207-annular plate, 208-second arcuate convex surface, 209-second arcuate concave surface, 210-V-shaped groove. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention, but this does not constitute a limitation on the protection scope of the present invention.

[0033] In the present invention, for a clearer description, the following explanation is made: the observer faces the attached Figure 1 For observation, the left side of the observer is set as left, the right side of the observer is set as right, the front of the observer is set as front, the rear of the observer is set as rear, the top of the observer is set as top, and the bottom of the observer is set as bottom. It should be pointed out that the terms "front end", "rear end", "left side", "right side", "middle", "top", "bottom" and the like in the text indicate the orientation or position relationship based on the orientation or position relationship set in the drawings, which is only for the convenience of clearly describing the utility model, and does not indicate or imply that the structure or component referred to must have a specific orientation or be constructed in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third", and "fourth" are only used for the purpose of clarity or simplification of description, and cannot be understood as indicating or implying relative importance or quantity.

[0034] See also Figures 1 to 15The present embodiment provides a vehicle-mounted outer support arm, including a mirror base 1 and a mirror arm lower shell 2. The mirror base 1 is provided with a rotating base 101, and the mirror arm lower shell 2 is provided with a rotating arm 201, and the rotating arm 201 is located above the rotating base 101; a first rotating groove 102 is provided at the top of the rotating base 101, and a plurality of inclined grooves 103 are evenly distributed on the edge of the first rotating groove 102, and the side of the inclined groove 103 is an inclined surface, and a first annular groove 104 is coaxially arranged on the edge outside the first rotating groove 102, and a first stopper 105 is arranged in the first annular groove 104; a second rotating groove 202 is provided at the bottom of the rotating arm 201, and a plurality of inclined bosses 203 are evenly distributed on the edge inside the second rotating groove 202, and the side of the inclined boss 203 is an inclined surface, and a second annular groove 204 is coaxially arranged on the edge outside the second rotating groove 202, and a second stopper 205 is arranged in the second annular groove 204 ; The rotating arm 201 can rotate around the vertical center line of the rotating seat 101, and the rotating arm 201 can move up and down relative to the rotating seat 101. A second elastic member 4 is provided above the rotating arm 201, and the second elastic member 4 can apply a downward elastic force to the rotating arm 201 to make the rotating arm 201 close to the rotating seat 101; the first rotating groove 102 cooperates with the second rotating groove 202, the first annular groove 104 cooperates with the second annular groove 204, and a plurality of inclined surface bosses 203 can respectively position and cooperate with a plurality of inclined surface grooves 103 downward; a first elastic member 3 is installed between the first annular groove 104 and the second annular groove 204, and when the rotating arm 201 rotates around the vertical center line of the rotating seat 101, the first stopper 105 and the second stopper 205 can jointly compress the first elastic member 3, and a plurality of inclined surface bosses 203 can respectively disengage from a plurality of inclined surface grooves 103 upward. Function: (1) It includes a mirror base and a mirror arm lower shell, wherein the mirror base is provided with a rotating base, and the mirror arm lower shell is provided with a rotating arm, and the rotating arm is located above the rotating base; thereby utilizing the rotating coordination and up-and-down coordination between the rotating arm and the rotating base to achieve the rotating coordination and up-and-down coordination between the mirror base and the mirror arm lower shell.(2) A first rotating groove is provided at the top of the rotating seat, and a plurality of inclined grooves are evenly distributed on the edge of the first rotating groove, and the side of the inclined groove is an inclined surface. A first annular groove is coaxially arranged on the edge outside the first rotating groove, and a first stopper is provided in the first annular groove; a second rotating groove is provided at the bottom of the rotating arm, and a plurality of inclined bosses are evenly distributed on the edge inside the second rotating groove, and the side of the inclined boss is an inclined surface. A second annular groove is coaxially arranged on the edge outside the second rotating groove, and a second stopper is provided in the second annular groove; the rotating arm can rotate around the vertical center line of the rotating seat, and the rotating arm can move up and down relative to the rotating seat. A second elastic member is provided above the rotating arm, and the second elastic member is provided on the top of the rotating arm. The elastic member can exert a downward elastic force on the rotating arm to make the rotating arm approach the rotating seat; the first rotating groove cooperates with the second rotating groove, the first annular groove cooperates with the second annular groove, and a plurality of inclined bosses can be respectively positioned downward with a plurality of inclined grooves; thus, in the initial state, the lower shell of the mirror arm and the mirror seat are pressed tightly under the elastic force of the second elastic member, and a plurality of inclined bosses are respectively positioned downward with a plurality of inclined grooves, and the rotation of the lower shell of the mirror arm needs to overcome the elastic force of the second elastic member to "climb the slope", and the elastic force of the second elastic member increases, which is similar to the meshing of gears, thereby realizing the positioning and cooperation of the rotating arm and the rotating seat, thereby avoiding the shaking of the mirror seat and the lower shell of the mirror arm during driving. (3) The first elastic member is installed between the first annular groove and the second annular groove. When the rotating arm rotates around the vertical center line of the rotating seat, the first stopper and the second stopper can jointly compress the first elastic member, and the plurality of inclined bosses can respectively disengage from the plurality of inclined grooves upward; thus, when the external force works to fold and rotate the lower shell of the mirror arm, the first elastic member is jointly compressed by the first stopper and the second stopper and the elastic potential energy will gradually increase. At the same time, the inclined surface of the inclined boss begins to slide in contact with the inclined surface of the inclined groove, and the elastic potential energy of the second elastic member will gradually increase. When the inclined boss disengages from the inclined groove upward, the positioning fit between the rotating arm and the rotating seat disappears, and the lower shell of the mirror arm can continue to rotate. After the external force disappears, the compressed first elastic member and the second elastic member will rebound, and the lower shell of the mirror arm will rebound to the initial state. From this analysis, it can be seen that when the mirror arm (i.e., the lower shell of the mirror arm) collides, rotates, folds, and moves upward, it can self-reset to its initial state through the rebound force of the first elastic member and the second elastic member, thereby improving driving safety, and the structure is simple, reliable, and low-cost.

[0035] Specifically, a rotation hole 106 is provided in the middle of the first rotation groove 102, and a rotation shaft 206 is provided in the middle of the second rotation groove 202. The rotation shaft 206 is inserted downward into the rotation hole 106, and the rotation shaft 206 and the rotation hole 106 are rotationally matched and can be moved up and down. Function: Through the rotational match and the up and down movement match of the rotation shaft 206 and the rotation hole 106, the lower shell 2 of the mirror arm can be rotated relative to the rotating mirror base 1 and can move up and down.

[0036] Specifically, the rotating hole 106 passes downward through the bottom of the rotating seat 101, and a flange nut 7 is provided below the rotating seat 101; the rotating shaft 206 passes upward through the top of the rotating arm 201, and the second elastic member 4, the gasket 5, and the bolt 6 are provided above the rotating arm 201 in sequence. The second elastic member 4 is a compression spring, which is sleeved on the outer circumference of the rotating shaft 206, and the gasket 5 is located above the rotating shaft 206; the screw of the bolt 6 passes downward through the gasket 5, the rotating shaft 206, and the rotating hole 106 in sequence and is threadedly connected with the flange nut 7, and the edge of the gasket 5 presses down on the top of the compression spring, and there is space between the gasket 5 and the rotating seat 101 for the rotating arm 201 to move up and down. Function: In the initial state, the lower shell of the mirror arm and the mirror seat are pressed tightly under the elastic force of the compression spring. The rotation of the lower shell of the mirror arm needs to overcome the elastic force of the compression spring to "climb" and do work, and the elastic force of the compression spring increases, which is similar to gear meshing.

[0037] Specifically, an annular plate 207 protruding upward is provided on the top of the rotating arm 201, the annular plate 207 is located at the outer edge of the rotating shaft 206 and is coaxially arranged, and the compression spring is sleeved between the rotating shaft 206 and the annular plate 207. Function: The setting of the annular plate 207 can protect the compression spring.

[0038] Specifically, the side wall of the second rotating groove 202 protrudes downward from the side wall of the second annular groove 204, and the side wall of the second rotating groove 202 is inserted downward into the first rotating groove 102, and the bottom of the side wall of the second annular groove 204 is downwardly abutted against the top of the side wall of the first annular groove 104; there is a horizontally set plane between two adjacent inclined grooves 103, and there is a horizontally set plane between two adjacent inclined bosses 203, and the bottom surfaces of the inclined grooves 103 and the bottom surfaces of the inclined bosses 203 are horizontally set planes. Function: In the initial state, the bottom surface of the inclined boss 203 contacts and cooperates with the bottom surface of the inclined groove 103, the inclined surface of the inclined boss 203 contacts and cooperates with the inclined surface of the inclined groove 103, and the plane between the two inclined bosses 203 contacts and cooperates with the plane between the two inclined grooves 103; when the lower shell of the mirror arm is folded and rotated, the inclined surface of the inclined boss 203 slides upward and contacts and cooperates with the inclined surface of the inclined groove 103. When the inclined boss is disengaged from the inclined groove upward, the inclined surface contact is converted into plane contact, and the bottom surface of the inclined boss 203 contacts the plane between the two inclined grooves 103. The elastic force of the compression spring is stable, and the compression spring no longer does work. At this time, rotating the lower shell of the mirror arm only needs to overcome the sliding friction between the lower shell of the mirror arm and the mirror seat and the rebound force of the reset spring (that is, the preferred first elastic member 3, the reset spring will be mentioned below). After the external force disappears, the compressed return spring will rebound, and the rebound force will be greater than the sliding friction force, which will rebound the lower shell of the mirror arm to its initial state in the horizontal direction. Then the elastic force of the compression spring will rebound the lower shell of the mirror arm to its initial state in the vertical direction, thus achieving self-reset to the initial state.

[0039] Specifically, the first elastic member 3 is a return spring, two first blocks 105 are arranged in the first annular groove 104, and two second blocks 205 are arranged in the second annular groove 204, and the two first blocks 105 can correspond to the two second blocks 205 up and down respectively; two return springs are arranged between the first annular groove 104 and the second annular groove 204, and the two return springs are separated by the first block 105 and the second block 205. Function: when the lower shell of the mirror arm is folded and rotated, one of the first blocks 105 and one of the second blocks 205 compress one of the return springs, and the other first block 105 and the other second block 205 compress the other return spring. When the external force works to make the lower shell of the mirror arm fold and rotate, the two return springs are compressed at the same time. When the inclined surface boss is upwardly disengaged from the inclined surface groove, the elastic force of the compression spring is stable, and the compression spring no longer works. At this time, rotating the lower shell of the mirror arm only needs to overcome the sliding friction between the lower shell of the mirror arm and the mirror seat and the rebound force of the return spring. After the external force disappears, the compressed return spring will rebound, and the rebound force is greater than the sliding friction force, rebounding the lower shell of the mirror arm to the initial state in the horizontal direction, and then the elastic force of the compression spring rebounds the lower shell of the mirror arm to the initial state in the vertical direction, thus achieving self-reset to the initial state. Preferably, the two first stoppers 105 are symmetrically arranged, and the two second stoppers 205 are symmetrically arranged.

[0040] Specifically, the upper left and right sides of the rotating seat 101 are respectively provided with a first arc-shaped concave surface 107 and a first arc-shaped convex surface 108, and the left and right sides of the rotating arm 201 are respectively provided with a second arc-shaped convex surface 208 and a second arc-shaped concave surface 209, the first arc-shaped concave surface 107 cooperates with the second arc-shaped convex surface 208, and the first arc-shaped convex surface 108 cooperates with the second arc-shaped concave surface 209. Function: Through the cooperation of the arc-shaped convex surface and the arc-shaped concave surface, the rotation cooperation of the rotating arm 201 and the rotating seat 101 can be more convenient.

[0041] Specifically, a mounting groove 109 is provided at the upper right end of the rotating seat 101, and a micro switch 8 is installed in the mounting groove 109. A V-shaped groove 210 is provided on the right side of the rotating arm 201; the contact end of the micro switch 8 is in close contact with the V-shaped groove 210 upward, and the micro switch 8 can be triggered when the rotating arm 201 rotates around the vertical center line of the rotating seat 101. Function: The micro switch is arranged on the mirror seat. Under the design state, the micro switch is in "normally open" or "normally closed". As the lower shell of the mirror arm folds left and right and rotates, the micro switch will be triggered after exceeding a certain angle. After the micro switch is triggered, the circuit is connected or disconnected, thereby triggering an alarm.

[0042] Specifically, the mirror base 1 is provided with a plurality of mounting holes 110, the mirror arm lower shell 2 is horizontally curved, and a camera 9 is mounted on one end of the mirror arm lower shell 2 away from the rotating arm 201. Function: The camera 9 is arranged at this position to better play the role of the camera.

[0043] Specifically, the upper part of the mirror arm lower shell 2 is equipped with the upper part of the mirror arm 10, and the upper part of the mirror arm 10 is fixed to the lower part of the mirror arm 2 by buckles; the lower part of the mirror base 1 is equipped with a mirror base decorative cover 11, and the mirror base 1 is fixed to the mirror base decorative cover 11 by buckles. Function: The upper part of the mirror arm 10 and the mirror base decorative cover 11 can better protect and decorate the outer arm.

[0044] The assembly process of the solution:

[0045] 1. Two return springs and micro switches are installed on the mirror base;

[0046] 2. The camera is fixed to the lower shell of the mirror arm;

[0047] 3. Put the lower shell of the mirror arm on the mirror base, and fix the lower shell of the mirror arm and the mirror base together with the compression spring, gasket, bolts, and flange nuts;

[0048] 4. The upper shell of the mirror arm is fixed to the lower shell of the mirror arm by buckles;

[0049] 5. Finally, install the mirror base cover. The mirror base cover and the mirror base are fixed with buckles.

[0050] Technical effects achieved

[0051] 1. The outer arm can be manually folded. When it is folded due to collision, it will be reset by two reset springs. The structure is simple, reliable and low cost.

[0052] 2. The micro switch can not only monitor the automatic reset status, but also monitor whether the mirror arm is in the design-allowed state and the accuracy of the camera field of view, thereby improving driving safety.

[0053] To sum up, this solution specifically provides a manual folding and automatic reset mechanism for the CMS outer arm of a commercial vehicle. The mirror arm can reset itself after being rotated and folded. At the same time, it is equipped with a sensor (i.e., a micro switch) to monitor whether the mirror arm is in the designed state and whether there is an angle deviation, thereby improving driving safety.

[0054] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the protection scope of the present invention.

Claims

1. A vehicle-mounted external support arm, comprising a mirror base (1) and a mirror arm lower shell (2), characterized in that: The mirror base (1) is provided with a rotating base (101), the mirror arm lower shell (2) is provided with a rotating arm (201), and the rotating arm (201) is located above the rotating base (101); a first rotating groove (102) is provided on the top of the rotating base (101), a plurality of inclined grooves (103) are evenly distributed on the edge of the first rotating groove (102), the side surface of the inclined groove (103) is an inclined surface, a first annular groove (104) is coaxially arranged on the edge outside the first rotating groove (102), and the first A first stopper (105) is provided in the annular groove (104); a second rotating groove (202) is provided at the bottom of the rotating arm (201); a plurality of inclined bosses (203) are evenly distributed on the edge of the second rotating groove (202); the side of the inclined boss (203) is an inclined surface; a coaxially arranged second annular groove (204) is provided on the edge outside the second rotating groove (202); a second stopper (205) is provided in the second annular groove (204); the rotating arm (201) can be rotated around the vertical axis of the rotating seat (101); The rotating arm (201) can be rotated along the center line of the rotating base (101), and the rotating arm (201) can move up and down relative to the rotating base (101). A second elastic member (4) is provided above the rotating arm (201), and the second elastic member (4) can exert a downward elastic force on the rotating arm (201) so that the rotating arm (201) is close to the rotating base (101); the first rotating groove (102) cooperates with the second rotating groove (202), the first annular groove (104) cooperates with the second annular groove (204), and a plurality of the inclined convex The platform (203) can be respectively positioned and matched with the plurality of the inclined grooves (103) downward; a first elastic member (3) is installed between the first annular groove (104) and the second annular groove (204); when the rotating arm (201) rotates around the vertical center line of the rotating seat (101), the first stopper (105) and the second stopper (205) can jointly compress the first elastic member (3), and the plurality of the inclined bosses (203) can be respectively disengaged from the plurality of the inclined grooves (103) upward.

2. The vehicle-mounted external support arm according to claim 1, characterized in that: A rotating hole (106) is provided in the middle of the first rotating groove (102), and a rotating shaft (206) is provided in the middle of the second rotating groove (202). The rotating shaft (206) is inserted downward into the rotating hole (106), and the rotating shaft (206) and the rotating hole (106) are rotationally matched and movablely matched up and down.

3. The vehicle-mounted external support arm according to claim 2, characterized in that: The rotating hole (106) passes downward through the bottom of the rotating seat (101), and a flange nut (7) is provided at the bottom of the rotating seat (101); the rotating shaft (206) passes upward through the top of the rotating arm (201), and the upper part of the rotating arm (201) is provided with the second elastic member (4), a gasket (5), and a bolt (6) in sequence, wherein the second elastic member (4) is a compression spring, and the compression spring is sleeved on the outer circumference of the rotating shaft (206), and the gasket (5) is located above the rotating shaft (206); the screw rod of the bolt (6) passes downward through the gasket (5), the rotating shaft (206), and the rotating hole (106) in sequence and is threadedly connected with the flange nut (7), the edge of the gasket (5) presses downward on the top of the compression spring, and there is a space between the gasket (5) and the rotating seat (101) for the rotating arm (201) to move up and down.

4. The vehicle-mounted external support arm according to claim 3, characterized in that: An upwardly protruding annular plate (207) is provided at the top of the rotating arm (201); the annular plate (207) is located at the outer edge of the rotating shaft (206) and is coaxially arranged; and the compression spring is sleeved between the rotating shaft (206) and the annular plate (207).

5. The vehicle-mounted external support arm according to any one of claims 1 to 4, characterized in that: The side wall of the second rotating groove (202) protrudes downward from the side wall of the second annular groove (204), the side wall of the second rotating groove (202) is inserted downward into the first rotating groove (102), and the bottom of the side wall of the second annular groove (204) is downwardly abutted against the top of the side wall of the first annular groove (104); there is a horizontally arranged plane between two adjacent inclined grooves (103), and there is a horizontally arranged plane between two adjacent inclined bosses (203), and the bottom surfaces of the inclined grooves (103) and the bottom surfaces of the inclined bosses (203) are horizontally arranged planes.

6. The vehicle-mounted external support arm according to any one of claims 1 to 4, characterized in that: The first elastic member (3) is a return spring. Two first blocks (105) are arranged in the first annular groove (104), and two second blocks (205) are arranged in the second annular groove (204). The two first blocks (105) can correspond to the two second blocks (205) up and down respectively. Two return springs are arranged between the first annular groove (104) and the second annular groove (204), and the first block (105) and the second block (205) are arranged between the two return springs.

7. The vehicle-mounted external support arm according to any one of claims 1 to 4, characterized in that: The upper left and right sides of the rotating seat (101) are respectively provided with a first arc-shaped concave surface (107) and a first arc-shaped convex surface (108); the left side and the lower right side of the rotating arm (201) are respectively provided with a second arc-shaped convex surface (208) and a second arc-shaped concave surface (209); the first arc-shaped concave surface (107) cooperates with the second arc-shaped convex surface (208), and the first arc-shaped convex surface (108) cooperates with the second arc-shaped concave surface (209).

8. The vehicle-mounted external support arm according to any one of claims 1 to 4, characterized in that: The upper right end of the rotating seat (101) is provided with a mounting groove (109), a micro switch (8) is installed in the mounting groove (109), and the right side of the rotating arm (201) is provided with a V-shaped groove (210); the contact end of the micro switch (8) is in close contact with the V-shaped groove (210) upward, and the micro switch (8) can be triggered when the rotating arm (201) rotates around the vertical center line of the rotating seat (101).

9. The vehicle-mounted external support arm according to any one of claims 1 to 4, characterized in that: The mirror base (1) is also provided with a plurality of mounting holes (110); the mirror arm lower shell (2) is horizontally curved; and a camera (9) is mounted on one end of the mirror arm lower shell (2) away from the rotating arm (201).

10. The vehicle-mounted external support arm according to any one of claims 1 to 4, characterized in that: An upper mirror arm shell (10) is mounted above the lower mirror arm shell (2), and the upper mirror arm shell (10) is fixed to the lower mirror arm shell (2) via a buckle; a mirror base decorative cover (11) is mounted below the mirror base (1), and the mirror base (1) is fixed to the mirror base decorative cover (11) via a buckle.

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