A high-precision positioning structure for vehicle lights

Abstract

The present invention provides a high-precision positioning structure for a vehicle lamp, comprising a limiting body and a limiting bearing. The limiting body is provided with a limiting structure 1 and a limiting structure 2, both of which can realize elastic deformation, wherein the limiting structure 1 is in the shape of petals, and the limiting structure 2 is in the shape of parentheses, and the limiting bearing is provided with a circular through hole 1 and a circular through hole 2 that match the limiting structure 1 and the limiting structure 2. The limiting structure 1 and the limiting structure 2 are inserted into the circular through hole 1 and the circular through hole 2 of the limiting bearing, and the limiting bearing is accurately positioned on the limiting body by relying on the cooperation of the limiting structure 1 and the limiting structure 2 of the limiting body. The elastic deformation generated by the limiting structure 1 and the limiting structure 2 can realize zero-gap fit and preferably interference fit, thereby reducing the limiting gap between the limiting body and the limiting bearing, effectively solving the problem that the positioning accuracy is low and cannot meet the design requirements in the traditional design due to the use of a columnar structure matching a waisted round hole limit method.

Description

Technical Field

[0001] The invention relates to the technical field of automobile lamps, and in particular to a high-precision positioning structure for automobile lamps. Background Art

[0002] As the diversity and complexity of headlight shapes continue to increase, automobile OEMs have higher and higher requirements for the optical performance of headlights, and have put forward extremely high precision requirements for headlight parts, especially optical parts. At present, the positioning between traditional parts is to design two positioning columns on one of the two parts, and design a waist hole and a round hole on the other part. The two positioning columns cooperate with the waist hole and the round hole to achieve positioning. Due to the unavoidable manufacturing tolerance and assembly tolerance of the parts themselves, this traditional waist round hole positioning solution needs to be designed with a clearance fit between the positioning column and the waist round hole when designing. The clearance fit design will inevitably cause deviations in the positioning of the two parts, so it is impossible to achieve high-precision positioning between the two parts, and it is difficult to achieve better optical performance. Summary of the invention

[0003] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a high-precision positioning structure for a vehicle lamp, which realizes a zero-gap fit or an interference fit between a limiting body and a limiting bearing member through a petal-shaped limiting structure 1 and a bracket-shaped limiting structure 2 that can produce elastic deformation, thereby realizing precise positioning of the limiting body and the limiting bearing member and solving the problems arising in the background technology.

[0004] The present invention provides a high-precision positioning structure for a vehicle lamp, comprising a limiting body and a limiting bearing member, the limiting body member is provided with an elastically deformable limiting structure 1 and a limiting structure 2, the limiting bearing member is provided with a circular through hole 1 and a circular through hole 2 which are matched with the limiting structure 1 and the limiting structure 2, and the limiting structure 1 and the limiting structure 2 are respectively installed in the circular through hole 1 and the circular through hole 2.

[0005] A further improvement is that the limiting structure is in the shape of petals and is composed of three identical fan-shaped annular rib structures arranged in a ring matrix. The three fan-shaped annular rib structures are disconnected from each other to ensure the elastic deformation of the three fan-shaped annular rib structures of the limiting structure.

[0006] Further improvements are as follows: the second limiting structure is in the shape of a parenthesis, the first limiting structure is composed of two identical fan-shaped annular rib structures 2 which are centrally symmetrical and axially symmetrical, the two fan-shaped annular rib structures 2 are designed to be disconnected from each other to ensure the elastic deformation of the two fan-shaped annular rib structures 2 of the second limiting structure, and the two fan-shaped annular rib structures 2 form two identical disconnected areas.

[0007] Further improvements are as follows: the cross-sections of the three fan-ring rib structures one and the three fan-ring rib structures two are all fan-ring shapes that gradually increase from the top to the root, the roots of the three fan-ring rib structures one and the two fan-ring rib structures two are fan-ring shapes with the largest area, which ensures the strength of the three fan-ring rib structures one and the two fan-ring rib structures two, and ensures that there is no risk of breakage during elastic deformation, the tops of the three fan-ring rib structures one and the two fan-ring rib structures two are fan-ring shapes with the smallest area, and the tops of the three fan-ring rib structures one and the two fan-ring rib structures two are designed with wedge chamfers, which are used as guides during installation.

[0008] A further improvement is that the limiting structure 1 and the limiting structure 2 are arranged at the larger outer contour of the limiting body, and the two completely identical disconnected areas of the two fan-shaped annular rib structures 2 of the limiting structure 2 are on the same straight line as the line connecting the arrangement positions of the limiting structure 1 and the limiting structure 2.

[0009] Further improvements are as follows: the limiting structure 1 and the limiting structure 2 are respectively inserted into the circular through hole 1 and the circular through hole 2 of the limiting bearing component, and the limiting bearing component is accurately positioned on the limiting body component by relying on the cooperation of the limiting structure 1 and the limiting structure 2 on the limiting body component. The limiting structure 1 and the limiting structure 2 are zero-clearance fit or interference fit with the matching circular through hole 1 and the circular through hole 2. The elastic deformation of the limiting structure 1 and the limiting structure 2 reduces the limiting gap between the limiting body component and the limiting bearing component, effectively solving the problem in the traditional design that the positioning accuracy is low and cannot meet the design requirements due to the use of a columnar structure matching a waisted round hole limiting method.

[0010] Further improvement lies in that the inner dimensions of the three fan-shaped annular rib structures 1 of the limiting structure 1 and the two fan-shaped annular rib structures 2 of the limiting structure 2 match the corresponding fastening screws. During installation, the three fan-shaped annular rib structures 1 and the two fan-shaped annular rib structures 2 of the limiting main body are respectively inserted into the circular through hole 1 and the circular through hole 2 of the limiting bearing component, and then the screws are installed using universal tools. During the process of screwing in the screws, the three fan-shaped annular rib structures 1 and the two fan-shaped annular rib structures 2 are subjected to the radial force of the screws, and elastically deform outward, thereby achieving an interference fit with the circular through hole 1 and the circular through hole 2 of the limiting bearing component, thereby achieving high-precision fixation.

[0011] The beneficial effects of the present invention are: the petal-shaped limiting structure 1 and the bracket-shaped limiting structure 2 that can produce elastic deformation realize zero clearance fit or interference fit between the limiting body and the limiting carrier, and solve the defect that the traditional positioning column positioning scheme for the waist circular hole cannot guarantee high positioning accuracy due to the need to be designed as a clearance fit due to considerations of manufacturing and assembly tolerances, thereby realizing precise positioning of the limiting body and the limiting carrier, greatly improving the optical performance while reducing the subsequent design and production costs caused by improving the accuracy through parts changes. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is an axonometric view of the limiting body of the present invention.

[0013] Figure 2 The present invention Figure 1 Enlarged cross-sectional view at point C in the middle.

[0014] Figure 3 The present invention Figure 1 Enlarged cross-sectional view at point D in the middle.

[0015] Figure 4 It is a left side view of the limiting body of the present invention.

[0016] Figure 5 The present invention Figure 4 A partial view of the EE section.

[0017] Figure 6 The present invention Figure 4 FF cross-sectional view.

[0018] Figure 7 It is a front view of the limiting body of the present invention.

[0019] Figure 8 It is an axonometric view of the position-limiting bearing member of the present invention.

[0020] Fig. 9 It is an axonometric diagram of the installation of the limiting main body and the limiting bearing member of the present invention.

[0021] Fig.10 It is a front view of the installation of the limiting body component and the limiting bearing component of the present invention.

[0022] Fig.11 It is an axonometric diagram of the fastening effect achieved by the present invention.

[0023] Among them: 1-limiting body, 2-limiting bearing member, 3-circular through hole 1, 4-circular through hole 2, 5-fan ring rib structure 1, 6-fan ring rib structure 2, 7-disconnection area, 8-limiting structure connection line, 9-screw, 10-wedge chamfer, A-limiting structure 1, B-limiting structure 2. DETAILED DESCRIPTION

[0024] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with examples. The examples are only used to explain the present invention and do not constitute a limitation on the protection scope of the present invention.

[0025] In the description of the present invention, it should be noted that the coordinate system in the figure and the terms "top", "root", "outside", "inside", etc. refer to the orientation or position relationship based on the automobile industry and the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the system or element referred to must have a specific orientation, and a specific orientation structure and operation, and therefore cannot be understood as a limitation on the present invention.

[0026] like Figure 1-10 As shown, this embodiment provides a high-precision positioning structure for a vehicle lamp, including a limiting body component 1 and a limiting bearing component 2.

[0027] like Figure 1 As shown, the limiting body 1 is provided with a limiting structure 1 A and a limiting structure 2 B, both of which can realize elastic deformation.

[0028] like Figure 2 As shown, the limiting structure A is in the shape of petals, and is composed of three identical fan-shaped annular rib structures 5 arranged in a ring matrix. The three fan-shaped annular rib structures 5 are disconnected from each other to ensure the elastic deformation of the three fan-shaped annular rib structures 5 of the limiting structure A.

[0029] like Figure 3 As shown, the limiting structure 2B is in the shape of a parenthesis, and is two identical fan-shaped annular rib structures 26 that are centrally symmetrical and axially symmetrical. The two fan-shaped annular rib structures 26 are designed to be disconnected from each other to ensure the elastic deformation of the two fan-shaped annular rib structures 26 of the limiting structure 2B. The two fan-shaped annular rib structures 26 form two identical disconnection areas 7.

[0030] like Figure 4As shown in Figures 5 and 6, the three fan-shaped annular rib structures 1 5 and the two fan-shaped annular rib structures 2 6 are preferably of completely identical structures, but are not limited to completely identical structures. The cross-sections of the three fan-shaped annular rib structures 1 5 and the three fan-shaped annular rib structures 2 6 are all fan-shaped shapes that gradually increase from the top to the root. The roots of the three fan-shaped annular rib structures 1 5 and the two fan-shaped annular rib structures 2 6 are fan-shaped with the largest area. In order to ensure the strength of the three fan-shaped annular rib structures 1 5 and the two fan-shaped annular rib structures 2 6 and to ensure that there is no risk of breakage during elastic deformation, the tops of the three fan-shaped annular rib structures 1 5 and the two fan-shaped annular rib structures 2 6 are fan-shaped with the smallest area. In order to facilitate installation, the tops of the three fan-shaped annular rib structures 1 5 and the two fan-shaped annular rib structures 2 6 are designed with wedge chamfers 10, which are used as guides during installation.

[0031] like Figure 7 As shown, the limiting structure 1A and the limiting structure 2B are preferably arranged at the larger outer contour of the limiting body 1, wherein the two completely identical disconnected areas 7 of the two fan-shaped annular rib structures 2 6 of the limiting structure 2B are on the same straight line as the line connecting the arrangement positions of the limiting structure 1A and the limiting structure 2B. This arrangement avoids over-positioning of the limiting bearing member 2 by the limiting structure 1A and the limiting structure 2B.

[0032] like Figure 8 As shown, the limiting bearing member 2 is provided with a circular through hole 1 3 and a circular through hole 2 4 which are matched with the limiting structure 1A and the limiting structure 2B.

[0033] like Fig. 9 As shown in Figure 10, during installation, the limiting structure 1A and the limiting structure 2B on the limiting body 1 are respectively inserted into the circular through hole 13 and the circular through hole 24 of the limiting bearing member 2. The limiting structure 1A on the limiting body 1 and the limiting structure 2B cooperate to achieve accurate positioning of the limiting bearing member 2 on the limiting body 1. The limiting structure 1A and the limiting structure 2B are zero-clearance fit or interference fit with the matching circular through hole 13 and the matching circular through hole 24. The limiting structure 1A matches the circular through hole 13 to limit the movement of the limiting bearing member 2 along the positive direction of the X-axis, the negative direction of the X-axis, the positive direction of the Y-axis, and the negative direction of the Y-axis, and to limit the rotation of the limiting bearing member 2 around the X-axis and around the Y-axis. The limiting structure 2B matches the circular through hole 24 to limit the rotation of the limiting bearing member 2 around the Z-axis. The limiting body 1 as a whole also limits the movement of the limiting bearing member 2 along the negative direction of the Z-axis. The elastic deformation produced by the limiting structure 1A and the limiting structure B reduces the positioning gap between the limiting body 1 and the limiting bearing member 2, effectively solving the defect in the traditional design that the limiting method using a columnar structure to match a waisted round hole results in low positioning accuracy and cannot meet the design requirements.

[0034] The high-precision positioning structure for the vehicle lamp of this embodiment can be used as a design scheme for achieving the positioning function and can also be used as a mounting structure for fasteners.

[0035] like Fig.11 As shown, the limiting bearing member 2 is as follows Figure 1-10 As shown, the positioning on the limiting body 1 is realized by adjusting the inner dimensions of the three fan-shaped annular rib structures 1 5 of the limiting structure 1A and the two fan-shaped annular rib structures 2 6 of the limiting structure 2B to match the matching fastening screws 9. During installation, the three fan-shaped annular rib structures 1 5 and the two fan-shaped annular rib structures 2 6 of the limiting body 1 are respectively inserted into the circular through hole 1 3 and the circular through hole 2 4 of the limiting bearing member 2, and then the screws 9 are installed using a universal tool. During the process of screwing in the screws 9, the three fan-shaped annular rib structures 1 5 and the two fan-shaped annular rib structures 2 6 are subjected to the radial force of the screws, and elastically deform outward, thereby achieving an interference fit with the circular through hole 1 3 and the circular through hole 2 4 of the limiting bearing member 2, and achieving high-precision fixation.

[0036] This positioning structure achieves zero-gap fit, preferably interference fit, between the limiting body and the limiting carrier, solving the problem that the traditional positioning column positioning scheme for the matching waist round hole needs to be designed as a clearance fit due to considerations of manufacturing and assembly tolerances, resulting in the inability to ensure high positioning accuracy. This achieves precise positioning of the limiting body and the limiting carrier, greatly improves the optical performance, and reduces the design and production costs caused by subsequent changes in parts to improve accuracy.

Claims

1. A high-precision positioning structure for a vehicle lamp, characterized by: The invention comprises a limiting body (1) and a limiting bearing member (2), wherein the limiting body (1) is provided with an elastically deformable limiting structure 1 (A) and a limiting structure 2 (B), and the limiting bearing member (2) is provided with a circular through hole 1 (3) and a circular through hole 2 (4) which are matched with the limiting structure 1 (A) and the limiting structure 2 (B), and the limiting structure 1 (A) and the limiting structure 2 (B) are respectively installed in the circular through hole 1 (3) and the circular through hole 2 (4); The limiting structure (A) is in the shape of petals, and is composed of three identical fan-shaped annular rib structures (5) arranged in a ring matrix. The three fan-shaped annular rib structures (5) are disconnected from each other to ensure the elastic deformation of the three fan-shaped annular rib structures (5) of the limiting structure (A). The limiting structure 2 (B) is in the shape of a parenthesis. The limiting structure 1 (B) is composed of two identical fan-shaped annular rib structures 2 (6) that are centrally symmetrical and axially symmetrical. The two fan-shaped annular rib structures 2 (6) are designed to be disconnected from each other to ensure the elastic deformation of the two fan-shaped annular rib structures 2 (6) of the limiting structure 2 (B). The two fan-shaped annular rib structures 2 (6) form two identical disconnected areas (7). The cross sections of the three fan annular rib structures (5) and the three fan annular rib structures (6) are all fan annular in shape that gradually increases in size from the top to the root. The roots of the three fan annular rib structures (5) and the two fan annular rib structures (6) are fan annular in shape with the largest area, which ensures the strength of the three fan annular rib structures (5) and the two fan annular rib structures (6), and ensures that there is no risk of breakage during elastic deformation. The tops of the three fan annular rib structures (5) and the two fan annular rib structures (6) are fan annular in shape with the smallest area. The tops of the three fan annular rib structures (5) and the two fan annular rib structures (6) are all designed with wedge chamfers (10) to serve as guides during installation. The limiting structure 1 (A) and the limiting structure 2 (B) are arranged at the larger outer contour of the limiting body (1), and the two identical disconnected areas (7) of the two fan-shaped annular rib structures 2 (6) of the limiting structure 2 (B) are on the same straight line as the line connecting the arrangement positions of the limiting structure 1 (A) and the limiting structure 2 (B).

2. The high-precision positioning structure for a vehicle lamp according to claim 1, characterized in that: The limiting structure 1 (A) and the limiting structure 2 (B) are respectively inserted into the circular through hole 1 (3) and the circular through hole 2 (4) of the limiting bearing member (2). The limiting bearing member (2) is accurately positioned on the limiting body member (1) by relying on the matching of the limiting structure 1 (A) and the limiting structure 2 (B) on the limiting body member (1). The limiting structure 1 (A) and the limiting structure 2 (B) are zero-clearance matched or interference matched with the matching circular through hole 1 (3) and the circular through hole 2 (4). The elastic deformation generated by the limiting structure 1 (A) and the limiting structure 2 (B) reduces the limiting clearance between the limiting body member (1) and the limiting bearing member (2), effectively solving the problem in the traditional design that the positioning accuracy is low and cannot meet the design requirements due to the use of a columnar structure matching a waisted round hole limiting method.

3. A high-precision positioning structure for a vehicle lamp according to claim 1 or 2, characterized in that: The inner dimensions of the three fan-shaped annular rib structures (5) of the limiting structure (A) and the two fan-shaped annular rib structures (6) of the limiting structure (B) match the corresponding fastening screws (9). During installation, the three fan-shaped annular rib structures (5) and the two fan-shaped annular rib structures (6) of the limiting main body (1) are respectively inserted into the circular through hole (3) and the circular through hole (4) of the limiting bearing component (2), and then the screws (9) are installed using a universal tool. During the screwing process of the screws (9), the three fan-shaped annular rib structures (5) and the two fan-shaped annular rib structures (6) are subjected to the radial force of the screws (9) and are elastically deformed outward, thereby achieving an interference fit with the circular through hole (3) and the circular through hole (4) of the limiting bearing component (2), thereby achieving high-precision fixation.

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