A new type of dimming device for vehicles

Abstract

This utility model discloses a novel dimming device for vehicles, comprising: a housing having a mounting hole; a dimming rod rotatably mounted inside the housing along the Z-axis, the dimming rod having a first driving end and a second driving end opposite to each other, the first driving end extending to the outside of the housing through the mounting hole for cooperating with an external tool to drive the dimming rod to rotate, the dimming rod also having a plurality of elastic wings symmetrically arranged with a degree of freedom of unfolding or closing in the Y-axis direction, the elastic wings being in an unfolded state in their natural state, and having a buckle on them; a motor bracket fixedly mounted inside the housing, having a circular retaining ring for engaging with the buckle; a dimming motor mounted in the motor bracket, the dimming motor having an axially movable motor ball head shaft, the second driving end driving the motor ball head shaft to move in the X-axis direction via a gear; and a sealing ring sleeved on the outside of the first driving end and located at the gap between the first driving end and the mounting hole.

Description

Technical Field

[0001] This utility model relates to the field of vehicle lighting technology, specifically to a novel dimming device for vehicles. Background Technology

[0002] Vehicle dimming devices are an important component of vehicle lights and a crucial guarantee for driving safety. Currently, there are generally two types of external dimming devices on the market. One type uses a dimming adapter structure to connect to the internal dimming motor. This requires additional parts for transmission calibration of the intermediate adapter, which introduces dimming errors during assembly. The other type uses a long dimming assembly (dimmer rod) to connect to the dimming motor and calibrate it. However, due to the excessive length of the dimming rod and its unstable fixation in the middle, this type creates an unstable "cantilever" structure. This "cantilever" structure is prone to seal failure between the dimming rod and the housing during operation, often resulting in water leakage risks and low reliability. Utility Model Content

[0003] The purpose of this invention is to address the problems of insufficient stability and water leakage risk during the dimming process caused by the excessive length of traditional dimming rods, and to design a new dimming device for vehicles to solve the above problems.

[0004] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0005] This utility model designs a novel dimming device for vehicles, which includes the following structural configuration:

[0006] The housing has mounting holes;

[0007] A dimming rod is rotatably mounted inside the housing along the Z-axis. The dimming rod has a first driving end and a second driving end. The first driving end extends to the outside of the housing through the mounting hole and is used to cooperate with an external tool to drive the dimming rod to rotate inside the housing. The dimming rod is also symmetrically provided with a plurality of elastic wings with a degree of freedom to unfold or close in the Y-axis direction. The elastic wings are in the unfolded state in their natural state. The elastic wings are also provided with buckles.

[0008] The motor bracket is fixedly installed inside the housing and has a circular retaining ring for engaging with the buckle. After the buckle engages with the circular retaining ring, the rotation of the dimming rod is not restricted.

[0009] A dimming motor is disposed in the motor bracket. The dimming motor has an axially movable motor ball head shaft. The second drive end drives the motor ball head shaft to move in the X-axis direction through a gear.

[0010] And a sealing ring, which is sleeved on the outside of the first driving end and located in the gap between the first driving end and the mounting hole.

[0011] Furthermore, a novel dimming device for vehicles: the first drive end is also provided with a recessed groove for engaging with an external tool.

[0012] Furthermore, a novel dimming device for vehicles includes: a first annular gear arranged circumferentially on the second drive end; the dimming motor also has a rotatably arranged bushing, the bushing being sleeved outside the motor ball joint shaft, and a second annular gear arranged circumferentially on the bushing, the first gear meshing with the second gear to drive the bushing to rotate, and the bushing rotating to drive the motor ball joint shaft to move in the X-axis direction.

[0013] Specifically, the bushing and the motor ball head shaft form a screw-like structure. The rotation of the bushing can be converted into linear motion of the motor ball head shaft. Therefore, after the bushing is driven to rotate by the dimming rod, it can drive the motor ball head shaft to move in the X-axis direction.

[0014] Furthermore, a novel dimming device for vehicles: the elastic wing arms are configured as two, symmetrically arranged on both sides of the dimming rod in the radial direction.

[0015] Furthermore, a novel dimming device for vehicles includes a limit buckle on the elastic wing arm, which cooperates with the latch to limit the dimming rod in the Z-axis direction. Specifically, through the structural arrangement of the limit buckle and the latch on the elastic wing arm, the combined action of the two ensures that the dimming rod cannot move freely in the Z-axis direction after it is installed in place (i.e., installed into the housing). When the elastic wing arm is closed, the latch disengages from the circular retaining ring, thus releasing the restriction on the movement of the dimming rod in the Z-axis direction.

[0016] Furthermore, a novel dimming device for vehicles includes a beveled surface on the buckle, which guides the buckle to smoothly engage with the circular retaining ring.

[0017] Specifically, the beveled structure of the buckle allows it to be inserted unobstructed into the bottom of the circular retaining ring during the installation of the dimmer rod, thus achieving a smooth engagement between the buckle and the circular retaining ring.

[0018] Furthermore, a novel dimming device for vehicles: the motor bracket and the dimming motor are fixed together by a knob structure.

[0019] Specifically, the dimming rod designed in this utility model has an elastic wing arm, one end of which is inclined on the dimming rod (i.e., the elastic wing arm and the dimming rod have a certain angle), which can ensure the inward spring-loaded (closing) space during the locking process. The wing arm is equipped with a buckle, which has an inclined surface for guiding. At the same time, the buckle and the limiting buckle together restrict the displacement of the dimming rod in the Z-axis direction after the circular retaining ring on the motor bracket engages with the dimming rod, while the Y-axis direction is limited by the rebound force of the elastic wing arm itself. This enhances the stability of the dimming rod and allows direct connection between the dimming rod and the motor bracket, aligning the first gear (bevel gear) at the bottom of the dimming rod with the second gear (cylindrical gear) on the motor. This invention allows the dimmer lever to be rotated by inserting a cross-groove tool directly into the groove (which can be set as an internal hexagonal groove) on the outside of the housing. Through the axial transmission between the first gear of the dimmer lever and the second gear of the motor, the movement is converted into the linear motion of the motor ball joint shaft, thereby achieving manual dimming. This enhances the effective driving force and stability of the lighting unit's dimming.

[0020] The beneficial effects of this utility model are:

[0021] (1) In order to avoid the "cantilever" structure caused by the excessive length of the dimming rod, this novel dimming device for vehicles is designed with an elastic wing arm on the dimming rod and a circular retaining ring structure added to the motor bracket below the dimming rod. The circular retaining ring contacts the elastic wing arm to restrict the movement of the dimming rod in the Y-axis direction. At the same time, a buckle and a limit buckle are also provided on the elastic wing arm to restrict the movement of the dimming rod in the Z-axis direction. This achieves the restriction of the movement of the dimming rod in the Y-axis and Z-axis directions, making it more stable. This avoids the "cantilever" structure caused by the excessive length of the dimming rod and effectively solves the problem of sealing failure between the dimming rod and the housing caused by the excessive length of the dimming rod. Therefore, there is no risk of water leakage due to sealing failure during operation, and the reliability is high.

[0022] (2) The new dimming device for vehicles designed in this utility model has a dimming rod that directly meshes with the motor via gears and is fixed by a circular retaining ring structure above the motor bracket. This simplifies the manual dimming device, shortens the dimming path, and effectively reduces dimming errors. By simply rotating the dimming rod, the dimming motor can be manually checked, thereby enhancing the effective driving force and stability of the lighting unit dimming.

[0023] (3) This novel vehicle dimming device, designed according to this utility model, uses an elastic wing arm on the dimming rod and a circular retaining ring on the motor bracket for locking and fixing. This effectively secures the dimming rod, ensuring its stability and dimming reliability. It also cleverly utilizes the motor bracket to achieve a stable connection with the dimming rod, eliminating the need for additional parts to fix the dimming rod, thus saving manufacturing costs while ensuring the flexibility of the dimming rod's axial movement. This novel dimming device reduces the need for traditional dimming adapter structures, minimizes assembly errors between parts, and avoids water leakage problems. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 A schematic diagram of the structure of this novel dimming device for vehicles designed according to Embodiment 1 of this utility model;

[0026] Figure 2 This is a front view of the dimming rod, motor bracket, and dimming motor assembled in Example 1;

[0027] Figure 3 This is an assembly diagram of the dimming rod and dimming motor in Example 1;

[0028] Figure 4 This is a side view of the dimming rod, motor bracket, and dimming motor assembled in Example 1;

[0029] Figure 5 for Figure 2 or Figure 3 An explosion diagram;

[0030] Figure 6 This is a partial structural schematic diagram of the novel dimming device for vehicles according to Example 1.

[0031] The markings in the image are as follows:

[0032] 1-Housing, 2-Dimming rod, 3-Motor bracket, 4-Dimming motor, 5-Sealing ring, 11-Mounting hole, 21-First drive end, 22-Second drive end, 23-Elastic wing arm, 24-Snap fastener, 25-Groove, 26-First gear, 27-Limit buckle, 28-Bevel, 31-Circular retaining ring, 41-Motor ball head shaft, 42-Shaft sleeve, 43-Second gear. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0034] In the description of this utility model, it should be understood that the terms "upper," "lower," "left," "right," "top," and "bottom," etc., indicating orientation or positional relationships, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of that feature. Moreover, the terms "first," "second," etc., are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of this utility model described herein can be implemented in orders other than those illustrated or described herein.

[0035] Example 1

[0036] like Figures 1-6 As shown in the figure, this embodiment 1 designs a novel dimming device for vehicles, characterized in that the dimming device includes the following structural configuration:

[0037] Housing 1, having mounting holes 11 thereon;

[0038] A dimming rod 2 is rotatably mounted inside the housing 1 along the Z-axis. The dimming rod 2 has a first driving end 21 and a second driving end 22. The first driving end 21 extends to the outside of the housing 1 through the mounting hole 11 and is used to cooperate with an external tool to drive the dimming rod 2 to rotate. A sealing ring 5 is sleeved on the outside of the first driving end 21 to seal the gap between the first driving end 21 and the mounting hole 11. The first driving end 21 is also provided with a recessed groove 25 (which can be set as an internal hexagonal groove) for cooperating with an external tool. A ring-shaped first gear 26 is provided in the circumferential direction of the second driving end 22. Several elastic wings 23 (made of plastic) with Y-axis degree of freedom of unfolding or closing are symmetrically inclined on the dimming rod 2 near the second driving end 22. The elastic wings 23 are in the unfolded state in their natural state and can be closed under the action of external force. The elastic wings 23 are also provided with a buckle 24 and a limit buckle 27.

[0039] The motor bracket 3 is fixed inside the housing 1 by screws. It is provided with a circular retaining ring 31 for engaging with the buckle 24. After the buckle 24 and the circular retaining ring 31 are engaged, the rotation of the dimming rod 2 is not restricted. At the same time, after engagement, the circular retaining ring 31 is located between the buckle 24 and the limit buckle 27, thereby restricting the movement of the dimming rod 2 in the Z-axis direction. The inclined surface 28 provided on the buckle 24 can help guide the buckle 24 to smoothly enter under the circular retaining ring 31 during the engagement process, so as to complete the engagement action.

[0040] And a dimming motor 4, which is disposed in the motor bracket 3, the dimming motor 4 has an axially movable motor ball head shaft 41 and a rotatable bushing 42. The bushing 42 is sleeved on the outside of the motor ball head shaft 41 and the bushing 42 and the motor ball head shaft 41 cooperate to form a "lead screw" structure. A ring-shaped second gear 43 is disposed on the circumference of the bushing 42. The first gear 26 meshes with the second gear 43 to drive the bushing 42 to rotate. After the bushing 42 rotates, it drives the motor ball head shaft 41 to move in the X-axis direction, thereby realizing the function of checking the dimming motor 4 and enhancing the effective driving performance and stability of the lighting unit dimming.

[0041] Specifically, the novel vehicle dimming device designed in Embodiment 1 above includes a housing 1, a dimming rod 2, a motor bracket 3, a dimming motor 4, and a sealing ring 5. One end (first drive end 21) of the dimming rod 2 has an internal hexagonal groove 25, which can cooperate with an external dimming tool to rotate the dimming rod 2. At the same time, a sealing ring 5 is provided at the point where the dimming rod 2 presses against the housing 1 to prevent water leakage. Below the dimming rod 2 (i.e., the second drive end 22), a first gear 26 is provided, which meshes with a second gear 43 on the dimming motor 4. This allows the dimming rod 2 to rotate from the outside, causing it to rotate on its own. The gear meshing then directly drives the bushing 42 to rotate, and the bushing 42 converts the rotation into a reciprocating motion of the motor ball joint shaft 41 in the X-axis direction, thus achieving the purpose of dimming.

[0042] To ensure stable dimming, an elastic wing arm 23 is provided in the middle of the dimming rod 2, and a buckle 24 and a limiting buckle 27 are provided on it. The contact between the elastic wing arm 23 and the circular retaining ring 31 can limit the dimming rod 2 in the Y-axis direction (that is, the elastic force of the elastic wing arm 23 can limit its displacement in the Y-axis direction). The buckle 24 and the circular retaining ring 31 are engaged together with the limiting buckle 27 to limit the dimming rod 2 in the Z-axis direction, thereby ensuring the stability of the dimming rod 2 and enabling stable dimming.

[0043] Compared to traditional dimming devices, the novel dimming device designed in Example 1 directly connects the dimming rod 2 to the motor bracket 3 inside the housing 1, effectively reducing the need for intermediate dimming adapter rods. The dimming rod 2 can be rotated directly outside the lamp using dimming tools. At the same time, the gear transmission between the dimming rod 2 and the dimming motor 4 drives the motor ball head shaft 41 on the dimming motor 4 to directly reciprocate in the X-axis direction, realizing manual calibration of the dimming motor 4. This saves costs while further reducing assembly errors and avoiding water leakage problems.

[0044] The above-described preferred embodiments of this utility model are for illustrative purposes only and are not intended to limit the scope of this utility model. Any obvious variations or modifications derived from the technical solutions of this utility model are still within the protection scope of this utility model.

Claims

1. A novel dimming device for vehicles, characterized in that, The dimming device includes the following structural configuration: The housing (1) has mounting holes (11); A dimming rod (2) is rotatably mounted inside the housing (1) along the Z-axis. The dimming rod (2) has a first driving end (21) and a second driving end (22) opposite to each other. The first driving end (21) extends to the outside of the housing (1) through the mounting hole (11) and is used to cooperate with external tools to drive the dimming rod (2) to rotate. The dimming rod (2) is also symmetrically provided with a number of elastic wings (23) with a degree of freedom to unfold or close in the Y-axis direction. The elastic wings (23) are in the unfolded state in their natural state and are also provided with buckles (24). The motor bracket (3) is fixedly installed inside the housing (1) and is provided with a circular retaining ring (31) for engaging with the buckle (24); A dimming motor (4) is disposed in the motor bracket (3). The dimming motor (4) has an axially movable motor ball head shaft (41). The second drive end (22) drives the motor ball head shaft (41) to move in the X-axis direction through gears. And a sealing ring (5), which is sleeved on the outside of the first driving end (21) and located in the gap between the first driving end (21) and the mounting hole (11).

2. The novel dimming device for vehicles according to claim 1, characterized in that, The first drive end (21) is also provided with an indented groove (25) for cooperating with an external tool.

3. A novel dimming device for vehicles according to claim 1, characterized in that, The second drive end (22) is provided with a ring-shaped first gear (26) in the circumferential direction; The dimming motor (4) also has a rotatably mounted bushing (42), which is sleeved on the outside of the motor ball head shaft (41). A ring-shaped second gear (43) is arranged on the circumference of the bushing (42). The first gear (26) meshes with the second gear (43) to drive the bushing (42) to rotate. After the bushing (42) rotates, it drives the motor ball head shaft (41) to move in the X-axis direction.

4. A novel dimming device for vehicles according to claim 1, characterized in that, The elastic wing arms (23) are configured as two, which are symmetrically arranged on both sides of the dimming rod (2) in the radial direction.

5. A novel dimming device for vehicles according to claim 1 or 4, characterized in that, The elastic wing arm (23) is also provided with a limit buckle (27), which is used to cooperate with the buckle (24) to limit the dimming rod (2) in the Z-axis direction.

6. A novel dimming device for vehicles according to claim 1 or 4, characterized in that, The buckle (24) is provided with a bevel (28), which is used to guide the buckle (24) to smoothly engage with the circular retaining ring (31).

7. A novel dimming device for vehicles according to claim 1, characterized in that, The motor bracket (3) and the dimming motor (4) are fixed together by a knob structure.

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