Spring-return type rearview mirror convenient return device

Abstract

The utility model relates to the technical field of automobile parts, disclose spring reset type rear -view mirror convenient reset device. The device includes mirror shell, rotates and connect reset casing and fixed base at its top, and the inside contains reset mechanism and buffer mechanism. Reset mechanism includes rotating shaft, torque spring and sleeve, is equipped with the sliding column with spiral sliding slot in the sleeve, and drives telescopic link along the axial extension through the limiting rod cooperation, buffer mechanism is located in fixed base, including rotating wheel, rotating block, sliding block and buffer spring, and rotating block abuts and pushes the sliding block compression buffer spring when rotating along the axle. The utility model through buffer mechanism effectively absorbs the impact energy, protects mirror body structure, and through spiral transmission will rotate into telescopic action, utilizes mechanical linkage to realize the intuitive prompt of reset state, solved the existing rear -view mirror easy to be damaged and reset feedback missing problem.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, and in particular to a convenient reset device for a spring-reset rearview mirror. Background Technology

[0002] Rearview mirrors, as essential safety aids for driving, are typically mounted on both sides of the vehicle and extend outwards, forming the outermost part of the vehicle's width. During driving, passing, or parking, these extended rearview mirrors are highly susceptible to scrapes or impacts from external sources, causing them to deflect or become damaged. To prevent direct breakage under stress, existing rearview mirrors are usually designed with folding or spring-loaded return functions. These allow the mirror housing to rotate around its axis when subjected to external impact to absorb some of the force, and then attempt to return to its initial position using the spring's restoring force after the force has dissipated.

[0003] Traditional reset mechanisms lack intuitive mechanical status feedback during impact-induced deflection and subsequent automatic reset. Drivers inside the vehicle often cannot immediately determine whether the rearview mirror has been displaced due to force, or whether it has accurately returned to the preset locking position after reset. This poses a safety hazard of incomplete reset or internal mechanism jamming that goes unnoticed by the driver.

[0004] Therefore, this utility model proposes a spring-reset type rearview mirror convenient reset device to overcome the shortcomings of the prior art. Summary of the Invention

[0005] In view of the problems in the existing technology, such as the lack of intuitive status feedback during the automatic reset process and the potential for incomplete reset, this utility model aims to provide a spring-loaded rearview mirror convenient reset device with an improved structure that can effectively solve the above problems.

[0006] This utility model provides a convenient reset device for a spring-reset rearview mirror, comprising: a mirror housing, a reset housing rotatably connected to the top of the mirror housing, and a fixed base; the reset housing houses a reset mechanism, and the fixed base houses a buffer mechanism; the reset mechanism includes a rotating shaft and a torque spring sleeved on the outer periphery of the rotating shaft; The reset mechanism further includes a sleeve fixedly connected to the top of the rotating shaft. A sliding column is slidably connected to the inner cavity of the sleeve. A spiral groove is formed on the outer wall of the sliding column. A limiting rod is fixedly inserted through the side wall of the sleeve. The end of the limiting rod extends into the groove and slides in cooperation with the groove. Furthermore, the buffer mechanism includes a rotating wheel fixedly connected to the bottom end of the rotating shaft, and a rotating block fixedly connected to the outer periphery of the rotating wheel; a fixed block is fixedly connected inside the fixed seat, a fixed sleeve is fixedly connected to the side of the fixed block, a slider is slidably connected to the inner cavity of the fixed sleeve, a buffer head is provided at one end of the slider facing the rotating block, a buffer spring is sleeved on the outer periphery of the slider, and when the rotating block rotates, it can abut against the buffer head and push the slider to compress the buffer spring.

[0007] Preferably, the reset mechanism further includes a mounting base fixedly connected to the outer periphery of the rotating shaft, the mounting base being located below the torque spring; the bottom end of the torque spring abuts against the mounting base, and the top end abuts against the inner wall of the reset housing, the torque spring being used to provide rotational reset torque for the rotating shaft.

[0008] Preferably, the reset mechanism further includes a telescopic rod, which is fixedly connected to the top of the sliding column. The top end of the telescopic rod passes through the top shell wall of the reset housing and extends to the outside of the reset housing. When the sleeve rotates with the rotating shaft, the limiting rod slides along the groove and drives the sliding column and the telescopic rod to extend outward axially.

[0009] Preferably, the reset mechanism further includes a reset spring located inside the sleeve; the two ends of the reset spring abut against the top end of the rotating shaft and the bottom end of the sliding column, respectively, and the reset spring is used to be compressed and store energy when the telescopic rod extends and to assist the sliding column in resetting after the external force disappears.

[0010] Preferably, one end of the buffer spring abuts against the end of the slider, and the other end abuts against the inner bottom wall of the fixed sleeve. The buffer spring is used to absorb the impact force generated when the mirror shell is deflected by an impact.

[0011] Preferably, in the reset mechanism, the sleeve, the sliding column, the sliding groove, the limiting rod, and the telescopic rod together form a telescopic assembly; the telescopic assembly moves synchronously with the rotating shaft.

[0012] Preferably, the rotating wheel is coaxial with the rotating shaft, and the rotating block protrudes radially along the rotating wheel; the direction in which the slider slides along the fixed sleeve is perpendicular to the axial direction of the rotating shaft.

[0013] Preferably, the rotating shaft passes through the center of the mounting base and extends into the interior of the fixed base, and the rotating shaft is rotatably engaged with the fixed base.

[0014] This utility model has the following beneficial effects: 1. This utility model, by setting a telescopic component including a spiral groove and a limiting rod in the reset mechanism, converts the rotational motion of the rotating shaft into the axial extension and retraction motion of the telescopic rod, solves the problem that existing rearview mirrors lack intuitive mechanical status prompts during deflection and automatic reset, and that car owners have difficulty confirming whether the reset mechanism is operating normally. It achieves the technical effect of using mechanical linkage to realize automatic prompts, intuitively display the current status of the rearview mirror, and improve the user experience and interactivity.

[0015] 2. This utility model, by setting a buffer mechanism inside the fixed base, uses a rotating block driven by a rotating shaft to squeeze the slider and compress the buffer spring, converting the rotational motion into linear buffer motion. This solves the problem that existing rearview mirrors lack an effective buffer energy absorption structure when subjected to external force collisions, which leads to the easy breakage and damage of internal rotating shafts or precision components due to rigid impacts. It achieves the technical effects of effectively absorbing the energy generated by the impact, reducing the impact force on the core structure of the rearview mirror, and significantly extending the service life and stability of the device.

[0016] 3. This utility model solves the problems of rearview mirrors easily shaking due to vibration and inaccurate position after being reset under force by using the pre-tightening torque of the torque spring, the axial restoring force of the reset spring, and the guiding and limiting function of the limiting rod in the slide groove. It achieves the technical effect of ensuring the stability of the rearview mirror under normal driving conditions and being able to automatically and accurately return to the initial set position after the external force disappears, thus ensuring driving safety. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of the convenient reset device for the spring-reset type rearview mirror proposed in this utility model. Figure 2 This is a schematic diagram of the mounting base for the spring-reset type rearview mirror convenient reset device proposed in this utility model; Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 This is a schematic diagram of the rotating wheel of the spring-reset type rearview mirror convenient reset device proposed in this utility model; Figure 5 for Figure 4 Enlarged view of point B in the middle.

[0018] Legend: 1. Mirror housing; 2. Reset housing; 3. Fixing base; 4. Reset mechanism; 41. Rotating shaft; 42. Torque spring; 43. Mounting base; 44. Sleeve; 45. Telescopic assembly; 451. Sliding column; 452. Slide groove; 453. Limiting rod; 46. Return spring; 47. Telescopic rod; 5. Buffer mechanism; 51. Rotating wheel; 52. Rotating block; 53. Fixed block; 54. Fixed sleeve; 55. Slider; 56. Buffer spring; 57. Buffer head. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. Example

[0020] Reference Figures 1 to 5 This utility model provides a convenient reset device for a spring-reset rearview mirror, including a mirror housing 1, a reset housing 2, and a fixing base 3. The mirror housing 1 serves as a supporting body for mounting the mirror lens. The reset housing 2 is fixedly connected to the top of the mirror housing 1 and forms an integral part therewith, serving to accommodate internal mechanical components and provide dust protection. The fixing base 3 is used to fix the entire device to the vehicle body and provide a stable support base.

[0021] The reset housing 2 houses the reset mechanism 4, and the fixed base 3 houses the buffer mechanism 5. The rotating shaft 41 serves as the core transmission component, connecting the reset mechanism 4 and the buffer mechanism 5. The rotating shaft 41 is rotatably connected to the top of the fixed base 3 and extends vertically through into the interior of the reset housing 2. A mounting base 43 is fixedly connected to the outer periphery of the rotating shaft 41. The mounting base 43 is located at the bottom of the reset mechanism 4 to provide a support plane.

[0022] The reset mechanism 4 includes a torque spring 42 sleeved on the outer periphery of the rotating shaft 41. The torque spring 42 is located above the mounting base 43. The bottom end of the torque spring 42 abuts against the upper surface of the mounting base 43, and the top end of the torque spring 42 abuts against the inner top wall of the reset housing 2. After assembly, the torque spring 42 is in a torsional pre-tightened state. It uses its own elastic torque to force the rotating shaft 41 to remain at a preset angle, thereby maintaining the stability of the mirror housing 1 under normal driving conditions and preventing shaking.

[0023] The bottom end of the rotating shaft 41 extends into the internal cavity of the fixed base 3 and is connected to the buffer mechanism 5. The top end of the rotating shaft 41 extends to the upper part of the reset housing 2 and is connected to the telescopic component 45 in the reset mechanism 4. The deflection force on the mirror housing 1 is transmitted to the internal functional components through the rotating shaft 41, realizing the linkage control of force buffering and automatic reset.

[0024] The telescopic assembly 45 includes a sleeve 44, a sliding column 451, a groove 452, a limiting rod 453, a return spring 46, and a telescopic rod 47. The sleeve 44 is fixedly connected to the top of the rotating shaft 41 and rotates synchronously with the rotating shaft 41. The sleeve 44 has a hollow tubular structure, and its interior forms a cylindrical inner cavity for accommodating the sliding column 451. A through hole is provided on the side wall of the sleeve 44 for fixing and installing the limiting rod 453. One end of the limiting rod 453 extends inward through the side wall of the sleeve 44 and into the groove 452 opened on the outer wall of the sliding column 451.

[0025] The sliding column 451 is slidably fitted into the inner cavity of the sleeve 44. The groove 452 on the outer wall of the sliding column 451 is spirally distributed and has a certain helical angle. This allows the limiting rod 453 to convert the rotational motion of the sleeve 44 into the axial linear motion of the sliding column 451 when it slides relative to the groove 452. The end of the limiting rod 453 slides with the groove wall of the groove 452, which plays a guiding and limiting role, ensuring that the sliding column 451 moves stably along the axis of the rotating shaft 41 without jamming.

[0026] A telescopic rod 47 is fixedly connected to the top of the sliding column 451. The top end of the telescopic rod 47 passes through the through hole reserved in the top shell wall of the reset housing 2 and extends to the outside of the reset housing 2. The telescopic rod 47 is used to provide the user with an intuitive mechanical position indication when it is extended, indicating that the rearview mirror is currently in an abnormal deflection state.

[0027] The sleeve 44 is also equipped with a return spring 46, which is located between the top surface of the rotating shaft 41 and the bottom surface of the sliding column 451. The two ends of the return spring 46 abut against the rotating shaft 41 and the sliding column 451 respectively. The return spring 46 is in a pre-compressed or free state in its natural state. When the sliding column 451 is driven to move downward or upward by the limit rod 453, the return spring 46 can provide a reverse elastic restoring force to help the sliding column 451 quickly return to its original position after the external force disappears, thus eliminating mechanical transmission gaps. The limit rod 453 forcibly drives the sliding column 451 to move axially, thereby driving the telescopic rod 47 to extend out of the housing, realizing the transformation of the rotation action into an intuitive telescopic action, and using mechanical linkage logic to complete the status prompt function.

[0028] In a preferred embodiment, the buffer mechanism 5 is disposed in the internal cavity of the fixed base 3. The buffer mechanism 5 includes a rotating wheel 51, a rotating block 52, a fixed block 53, a fixed sleeve 54, a slider 55, a buffer spring 56, and a buffer head 57. The rotating wheel 51 is fixedly connected to the bottom end of the rotating shaft 41 and rotates synchronously with the rotating shaft 41. The rotating block 52 is fixedly connected to the outer circumferential surface of the rotating wheel 51. The rotating block 52 protrudes outward along the radial direction of the rotating wheel 51 to form a force-applying part.

[0029] The fixing block 53 is fixedly connected to the inner wall of the fixing seat 3. The fixing sleeve 54 is fixedly connected to the side of the fixing block 53. The fixing sleeve 54 has a cavity inside for accommodating the sliding of the slider 55. The slider 55 is slidably connected to the inner cavity of the fixing sleeve 54. The sliding direction of the slider 55 is perpendicular to the axis of the rotating shaft 41. A hemispherical or arc-shaped buffer head 57 is fixedly provided at one end of the slider 55 facing the rotating block 52. The buffer head 57 is used to abut against the rotating block 52.

[0030] The slider 55 has a T-shaped structure. The diameter of the part of the slider 55 inside the fixed sleeve 54 is larger than the part that extends out of the fixed sleeve 54 and connects to the buffer head 57. A buffer spring 56 is sleeved on the outer periphery of the slider 55. One end of the buffer spring 56 abuts against the end flange of the slider 55, and the other end abuts against the inner bottom wall of the fixed sleeve 54. The buffer spring 56 is in a compressed and pre-tightened state. It uses its own elastic restoring force to force the slider 55 and the buffer head 57 to always maintain the tendency to push out towards the rotating block 52. When the rotating shaft 41 drives the rotating wheel 51 to rotate, the rotating block 52 rotates accordingly and hits the buffer head 57, pushing the slider 55 to overcome the elastic force of the buffer spring 56 and slide into the fixed sleeve 54, thereby compressing the buffer spring 56 to absorb the impact energy.

[0031] The implementation principle of this embodiment is as follows: The resetting rearview mirror convenient reset device consists of a mirror housing 1 and a reset housing 2 rotatably connected to its top, a fixed base 3, a reset mechanism 4, and a buffer mechanism 5. During normal driving, the torque spring 42 of the reset mechanism 4 keeps the rearview mirror stable. When the rearview mirror is impacted by an external force, the mirror housing 1 deflects around the rotation axis 41, and the torque spring 42 is twisted to store energy. At the same time, the buffer mechanism 5 absorbs the impact force through the deformation of the buffer spring 56, protecting the mirror structure. After the external force disappears, the torque spring 42 releases its rebound force, driving the rotation axis 41 to rotate and reset. The telescopic component 45 inside the reset mechanism 4 moves synchronously with the rotation axis 41, and the telescopic rod 47 retracts back to the return housing 2, realizing mechanical reset and indicating to the driver that the rearview mirror has been reset.

[0032] First, under normal driving conditions, the torque spring 42 is pre-tightened and provides stable torque, keeping the rotating shaft 41 in the set working state, thereby ensuring that the rearview mirror is in a normal working posture and does not wobble or shift.

[0033] When the rearview mirror is deflected by an external impact, the mirror housing 1 drives the rotating shaft 41 to rotate around its own axis, and the torque spring 42 is further twisted and stores elastic potential energy. At the same time, the rotational motion of the rotating shaft 41 is transmitted to the telescopic assembly 45, in which the sleeve 44 rotates synchronously with the rotating shaft 41. When the sleeve 44 rotates, it drives the fixed limiting rod 453 inside to slide along the preset sliding groove 452 on the inner sliding column 451, so that the sliding column 451 slides inside the sleeve 44. Under the guidance and limiting action of the limiting rod 453, the telescopic rod 47 is pushed outward, and the return spring 46 is compressed and stores energy.

[0034] When the external impact force disappears, the torque spring 42 releases the stored elastic potential energy, driving the rotating shaft 41 to rotate in the opposite direction, causing the rearview mirror to return to its initial position. At this time, during the rotation of the rotating shaft 41, the telescopic component 45 moves synchronously, the sliding column 451 resets, the reset spring 46 releases its elastic force, and the telescopic rod 47 retracts to its initial position, realizing mechanical reset and positioning indication, ensuring that the rearview mirror accurately and stably returns to its normal working posture.

[0035] Secondly, during the process of the rearview mirror deflecting due to an external impact, the deflection force is transmitted to the rotating wheel 51 in the mounting base 43, causing the rotating wheel 51 to rotate synchronously with the rearview mirror. The rotating wheel 51 drives the rotating block 52 to rotate, and the rotating block 52 and the fixed block 53 form relative motion. When the rotating block 52 rotates to contact the buffer head 57, it pushes the slider 55 to slide axially along the inner cavity of the fixed sleeve 54, thereby compressing the buffer spring 56. The buffer spring 56 absorbs the impact energy generated by the impact during the compression deformation process, reducing the impact on the internal structure and rotating parts of the rearview mirror, and achieving buffer protection.

[0036] After the external force is removed, the buffer spring 56 releases its elastic potential energy, pushing the slider 55 to reset. The slider 55 then pushes the rotating block 52 and the rotating wheel 51 to rotate in the opposite direction. This, in conjunction with the reset mechanism 4, resets the entire endoscope, ensuring a smooth reset process without rigid impact and improving the service life and operational stability of the internal core components.

[0037] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A spring-loaded rearview mirror easy-reset device, comprising: The mirror housing (1), the reset housing (2) rotatably connected to the top of the mirror housing (1), and the fixed seat (3); the reset housing (2) contains a reset mechanism (4), and the fixed seat (3) contains a buffer mechanism (5); the reset mechanism (4) includes a rotating shaft (41) and a torque spring (42) sleeved on the outer periphery of the rotating shaft (41). The reset mechanism (4) is characterized in that it further includes a sleeve (44) fixedly connected to the top end of the rotating shaft (41), a sliding column (451) is slidably connected to the inner cavity of the sleeve (44), a spiral groove (452) is opened on the outer wall of the sliding column (451), a limiting rod (453) is fixedly passed through the side wall of the sleeve (44), and the end of the limiting rod (453) extends into the groove (452) and slides in cooperation with the groove (452).

2. The spring-reset type convenient rearview mirror reset device according to claim 1, characterized in that, The reset mechanism (4) further includes a mounting base (43) fixedly connected to the outer periphery of the rotating shaft (41). The mounting base (43) is located below the torque spring (42). The bottom end of the torque spring (42) abuts against the mounting base (43), and the top end abuts against the inner wall of the reset housing (2). The torque spring (42) is used to provide rotational reset torque for the rotating shaft (41).

3. The convenient reset device for a spring-reset rearview mirror according to claim 1, characterized in that, The reset mechanism (4) also includes a telescopic rod (47), which is fixedly connected to the top of the sliding column (451). The top end of the telescopic rod (47) passes through the top shell wall of the reset housing (2) and extends to the outside of the reset housing (2). When the sleeve (44) rotates with the rotating shaft (41), the limiting rod (453) slides along the slide groove (452) and drives the sliding column (451) and the telescopic rod (47) to extend outward along the axial direction.

4. The convenient reset device for a spring-reset rearview mirror according to claim 3, characterized in that, The reset mechanism (4) further includes a reset spring (46), which is located inside the sleeve (44). The two ends of the reset spring (46) abut against the top end of the rotating shaft (41) and the bottom end of the sliding column (451), respectively. The reset spring (46) is used to be compressed and stored when the telescopic rod (47) is extended, and to assist the sliding column (451) in resetting after the external force disappears.

5. The spring-reset type convenient rearview mirror reset device according to claim 1, characterized in that, The buffer mechanism (5) includes a rotating wheel (51) fixedly connected to the bottom end of the rotating shaft (41) and a rotating block (52) fixedly connected to the outer periphery of the rotating wheel (51). A fixed block (53) is fixedly connected inside the fixed seat (3). A fixed sleeve (54) is fixedly connected to the side of the fixed block (53). A slider (55) is slidably connected to the inner cavity of the fixed sleeve (54). A buffer head (57) is provided at one end of the slider (55) facing the rotating block (52). A buffer spring (56) is sleeved on the outer periphery of the slider (55). When the rotating block (52) rotates, it can abut against the buffer head (57) and push the slider (55) to compress the buffer spring (56). One end of the buffer spring (56) abuts against the end of the slider (55), and the other end abuts against the inner bottom wall of the fixed sleeve (54). The buffer spring (56) is used to absorb the impact force generated when the mirror shell (1) is deflected by an impact.

6. The spring-reset type convenient rearview mirror reset device according to claim 3, characterized in that, The sleeve (44), sliding column (451), sliding groove (452), limiting rod (453) and telescopic rod (47) in the reset mechanism (4) together form a telescopic assembly (45), and the telescopic assembly (45) moves synchronously with the rotating shaft (41).

7. The spring-reset type convenient rearview mirror reset device according to claim 5, characterized in that, The rotating wheel (51) is coaxially arranged with the rotating shaft (41), the rotating block (52) protrudes radially along the rotating wheel (51), and the slider (55) slides along the fixed sleeve (54) in a direction perpendicular to the axis of the rotating shaft (41).

8. The spring-reset type convenient rearview mirror reset device according to claim 2, characterized in that, The rotating shaft (41) passes through the center of the mounting base (43) and extends into the interior of the fixed base (3), and the rotating shaft (41) is rotatably engaged with the fixed base (3).

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