Concrete mixer door mirror system with telescopic support
By designing a concrete mixing door mirror system with telescopic support, the problem of blind spots when the engineering vehicle turns right is solved, the field of view is significantly improved and the safety is improved, and the vehicle width standard is met.
Patent Information
- Application Number
- CN202421407011.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-19
- Publication Date
- 2025-02-11
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The prior art is difficult to effectively eliminate the blind spots of concrete mixers when turning right, resulting in the occurrence of safety accidents.
A concrete mixing door mirror system with telescopic brackets is designed, including a door mirror combination, a telescopic bracket and a drive device. Through the free telescopic brackets, the right field of view of the engineering vehicle driver is enhanced.
It significantly improves the blind spot problem when the construction vehicle turns right, improves the driver's driving safety, and avoids the risk of increasing the width of the vehicle, which is easy to install, low cost and good reliability.
Smart Images
Figure CN222452079U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of automobile blind spot mirror products, in particular to a concrete mixer car door mirror system with a telescopic bracket. Background Art
[0002] When large engineering transport vehicles such as concrete mixer trucks turn right, due to the different driving trajectories of the front and rear wheels, there is an inner wheel difference, which forms a dangerous area similar to a crescent on the right side of the vehicle body, called the "death crescent". The reason why the "death crescent" is dangerous is that it belongs to the driver's blind spot. It is easy to roll non-motor vehicles and pedestrians running in the same direction under the vehicle, causing serious safety accidents. This phenomenon is called "eating people right turn" in the industry. According to the analysis and statistical data of the causes of truck traffic accidents in cities, about 40% are caused by truck blind spots, of which about 25% occur when turning right. In order to prevent right turn accidents of engineering vehicles, a series of technical measures have been taken in China. For example, blind spot mirrors are arranged around the front of the vehicle; a perspective window (i.e. "OK window") is set at the lower part of the right door; a horn plays a prompt sound when turning right; an anti-collision undercarriage bar is set; a striking blind spot sign is drawn on the ground at the intersection; an electronic rearview mirror; an electronic blind spot warning system; a 360-degree all-round camera monitoring system, etc. However, there are many problems with the above measures. For example, the viewing area of the traditional door mirror of a construction vehicle is 1.5 meters outside the door, while the distance between the cyclist and the construction vehicle is often more than 3 meters, which is not within the observation range. If the door mirror bracket is lengthened, the observation field of view can be effectively expanded, but this will easily cause the width of the construction vehicle to exceed the national standard; the "OK window" can effectively improve the right turn blind spot problem, but the limitation is that the co-pilot seat cannot be occupied; although the relevant technical measures using electronic cameras are effective, the installation procedure is complicated and costly, and once the camera line fails, the construction vehicle driver will be in a very passive situation. Summary of the invention
[0003] In view of the problems existing in the background technology, the utility model provides a door mirror system for a concrete mixer truck with a telescopic bracket, aiming to further eliminate the blind spot when the engineering vehicle turns right and ensure driving safety. It is characterized by: a door mirror system for a concrete mixer truck with a telescopic bracket, comprising a door mirror assembly, a telescopic bracket and a driving device, the door mirror assembly comprising a main door mirror, a secondary door mirror one and a secondary door mirror two, the main door mirror is hollow inside and contains two channels, the telescopic bracket comprises a bracket rod and a rotating pair, one end of the telescopic bracket is connected to the driving device, and the other end is connected to the secondary door mirror one and the secondary door mirror two, the driving device comprises a base, a slider, a slide groove, a connecting rod, a pin, a spring, a pulley block, a traction line, and a pull ring, one end of the connecting rod is connected to the base by the rotating pair, and the other end is connected to the pin, and the pin is embedded in the slide groove.
[0004] Furthermore, the mirror surface of the main door mirror is at an angle of 45 degrees to the horizontal ground, the channel cross-section of the main door mirror is a rectangle, and the dimension of each side of the rectangle exceeds the corresponding dimension of the auxiliary door mirror 1 and the auxiliary door mirror 2 by no less than 2 mm.
[0005] Furthermore, the two support rods at the near-door mirror end of the retractable support are provided with slide rails, and the slide rails are connected by pins; one of the two support rods at the far-door mirror end is connected to the base, and the other is connected to the slider.
[0006] Furthermore, the pulley block includes a movable pulley and a fixed pulley, and the fixed pulley is fixed to the base.
[0007] Furthermore, one end of the traction line is connected to the pull ring, and the other end is connected to the slider after passing around the pulley block.
[0008] Compared with the prior art, the beneficial effects of the present invention are as follows: First, the door mirror system in the present invention can be freely extended and retracted with the help of the bracket, which improves the right field of vision of the engineering vehicle driver and significantly improves the blind spot problem when the engineering vehicle turns right. At the same time, when the door mirror system is extended, the two auxiliary door mirrors will slide out of the main door mirror, further improving the field of vision of the engineering vehicle driver. When not in use, it can be manually retracted with the help of the pull ring, which does not violate the national standard for the width of engineering vehicles. Secondly, the door mirror system in the present invention is manually mechanically operated and does not rely on the circuit system. It is easy to install, low cost, simple to operate, and has good reliability. It can effectively eliminate the blind spot of the engineering vehicle when turning right and improve the driver's driving safety. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0010] Figure 1 It is a perspective axonometric drawing of the door mirror system when it is retracted;
[0011] Figure 2 for Figure 1 Schematic diagram of top view;
[0012] Figure 3 It is a top view schematic diagram of the door mirror system when it is extended;
[0013] Figure 4 for Figure 3 Schematic diagram from top view;
[0014] Figure 5 for Figure 3 Schematic side view of .
[0015] In the figure: 1. main door mirror; 2. auxiliary door mirror 1; 3. auxiliary door mirror 2; 4. bracket rod; 5. rotating pair; 6. slide rail; 7. pin shaft; 8. connecting rod; 9. pin; 10. slider; 11. slide groove; 12. spring; 13. fixed pulley; 14. movable pulley; 15. traction line; 16. pull ring; 17. base; 18. channel; 19. mirror surface. DETAILED DESCRIPTION
[0016] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.
[0017] The embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings.
[0018] like Figure 1 to Figure 2 As shown, a preferred embodiment of the utility model is a door mirror system of a concrete mixer truck with a telescopic bracket, comprising a door mirror assembly, a telescopic bracket and a driving device.
[0019] The door mirror assembly comprises a main door mirror (1), a secondary door mirror 1 (2) and a secondary door mirror 2 (3). The main door mirror (1) is hollowed out inside and includes two channels (18). The purpose of providing the hollow channels is, firstly, to store the secondary door mirror 1 (2) and the secondary door mirror 2 (3), and secondly, to ensure the free sliding of the secondary door mirror 1 (2) and the secondary door mirror 2 (3).
[0020] The retractable bracket includes a bracket rod (4) and a rotating pair (5). One end of the retractable bracket is connected to the driving device, and the other end is connected to the auxiliary door mirror 1 (2) and the auxiliary door mirror 2 (3). With the help of the driving device, the retractable bracket can be freely extended, thereby effectively improving the right turn field of vision of the engineering vehicle driver. Figure 3 shown.
[0021] The driving device comprises a base (17), a slider (10), a slide groove (11), a connecting rod (8), a pin (9), a spring (12), a pulley block, a traction line (15), and a pull ring (16). One end of the connecting rod (8) is connected to the base (17) by a rotating pair (5), and the other end is connected to the pin (9). The pin (9) is embedded in the slide groove (11). When the pull ring (16) is pulled, the slider (10) slides relative to the base (17) under the action of traction, and the pin (9) moves in a directional manner in the slide groove (11). Due to the special structure of the slide groove (11), when the pin (9) moves to a specific position, the automatic locking and automatic release functions are triggered, thereby realizing the free extension and retraction of the retractable bracket.
[0022] Furthermore, the mirror surface (19) of the main door mirror is at an angle of 45 degrees to the horizontal ground. Figure 4 and Figure 5 As shown. The cross-sectional shape of the channel (18) of the main door mirror (1) is a rectangle. The size of each side of the rectangle exceeds the corresponding size of the auxiliary door mirror 1 (2) and the auxiliary door mirror 2 (3) by not less than 2 mm, so that the auxiliary door mirror 1 (2) and the auxiliary door mirror 2 (3) can slide freely in and out of the main door mirror (1).
[0023] Furthermore, the two support rods at the near-door mirror end of the retractable support are provided with a slide rail (6). The slide rail (6) is connected by a pin shaft (7). This ensures that when the auxiliary door mirror 1 (2) and the auxiliary door mirror 2 (3) slide in the main door mirror (1), the support can be freely extended and retracted without getting stuck. One of the two support rods at the far-door mirror end is connected to the base (17), and the other is connected to the slider (10). Therefore, the two support rods will extend or contract with the relative movement of the slider, thereby achieving the extension and shortening of the entire retractable support.
[0024] Furthermore, the pulley block comprises a movable pulley (14) and a fixed pulley (15). The fixed pulley (15) is fixed to the base (17). The purpose of providing the pulley block is to help the engineering vehicle driver save effort when pulling the pull ring (16).
[0025] Furthermore, one end of the traction wire (15) is connected to the pull ring (16), and the other end is connected to the slider (10) after passing through the pulley block. The direct effect of this connection is that when the pull ring (16) is pulled, the slider (10) will slide relative to the base (17), thereby driving the extension and retraction of the bracket and the relative sliding of the auxiliary door mirror 1 (2) and the auxiliary door mirror 2 (3).
[0026] Finally, it should be noted that the above embodiments are merely explanations of the present invention, and are not limitations of the present invention. After reading this specification, those skilled in the art may make modifications to the embodiments without any creative contribution as needed, but as long as they are within the scope of the claims of the present invention, they are protected by the patent law.
Claims
1. A door mirror system for a concrete mixer truck with a telescopic bracket, comprising a door mirror assembly, a telescopic bracket and a driving device, characterized in that: The door mirror assembly includes a main door mirror, auxiliary door mirror one and auxiliary door mirror two. The main door mirror is hollow inside and contains two channels. The retractable bracket includes a bracket rod and a rotating pair. One end of the retractable bracket is connected to the driving device, and the other end is connected to the auxiliary door mirror one and the auxiliary door mirror two. The driving device includes a base, a slider, a slide groove, a connecting rod, a pin, a spring, a pulley block, a traction line, and a pull ring. One end of the connecting rod is connected to the base via the rotating pair, and the other end is connected to the pin. The pin is embedded in the slide groove.
2. A concrete mixer truck door mirror system with a telescopic bracket according to claim 1, characterized in that: The mirror surface of the main door mirror is at an angle of 45 degrees to the horizontal ground. The channel cross-section of the main door mirror is rectangular, and the dimension of each side of the rectangle exceeds the corresponding dimension of the auxiliary door mirror 1 and the auxiliary door mirror 2 by no less than 2 mm.
3. A concrete mixer truck door mirror system with a telescopic bracket according to claim 1, characterized in that: The two support rods at the near-door mirror end of the retractable support are provided with slide rails, and the slide rails are connected by pins. One of the two support rods at the far-door mirror end is connected to the base, and the other is connected to the slider.
4. A door mirror system for a concrete mixer truck with a telescopic bracket according to claim 1, characterized in that: The pulley block comprises a movable pulley and a fixed pulley, and the fixed pulley is fixed to the base.
5. The door mirror system of a concrete mixer truck with a telescopic bracket according to claim 1, characterized in that: One end of the traction line is connected to the pull ring, and the other end is connected to the slider after passing around the pulley block.