Fine adjustment screw positioning structure

Abstract

The utility model belongs to the field of automobile ball screw installation, and particularly relates to a fine adjustment screw positioning structure which comprises a ball screw and a support, a sleeve is sleeved on the ball screw, a screw hole is formed in the support, protruding limiting ribs are arranged on two sides of the screw hole, a cavity is formed in the sleeve, one end of the ball screw is located in the cavity, and the other end of the ball screw is located in the cavity. One end of the ball screw is a ball head, a buckle ring is arranged below the ball head, the diameter of the buckle ring is a, the diameter of the ball head is b, a is larger than b, the ball screw is connected to the cavity wall of the sleeve in a clamped mode through the buckle ring, the sleeve is screwed so that the ball screw can be separated from the sleeve to be fixed in the screw hole, and in the screwing process of the ball screw in the screw hole, the ball screw can be screwed tightly. The sleeve abuts against the limiting rib for limiting. Through the interference of the sleeve and the limiting rib, the sleeve continuously rotates to be separated from the ball screw in the sleeve, so that the ball screw is self-positioned and mounted in place.

Description

Technical Field

[0001] The utility model belongs to the field of automobile ball head screw installation, and in particular relates to a fine-tuning screw positioning structure. Background Art

[0002] Due to the uncertainty of light projection and focusing, automobile lights often need to be adjusted in a series of ways to achieve the best light projection. The ball screw structure set in the lamp housing is the main component for adjusting the light projection of the lamp reflector. In the existing design, it is usually necessary to use tooling to install the ball screw in place, which is troublesome and inconvenient. Utility Model Content

[0003] In order to solve the above problems existing in the prior art, the utility model provides a fine-tuning screw positioning structure. Through the interference between the sleeve and the limiting rib, the sleeve continues to rotate to disengage the ball head screw therein, so that the ball head screw can be self-positioned and installed in place.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a fine-tuning screw positioning structure, including a ball head screw and a bracket, a sleeve is sleeved on the ball head screw, a screw hole is arranged on the bracket, and raised limiting ribs are arranged on both sides of the screw hole. The ball head screw is disengaged from the sleeve and fixed in the screw hole by screwing the sleeve. When the ball head screw is tightened in the screw hole, the sleeve and the limiting ribs are in contact with each other to limit the position.

[0005] Furthermore, a cavity is provided on the sleeve, and one end of the ball screw is located in the cavity.

[0006] Furthermore, one end of the ball head screw is a ball head, and a snap ring is arranged below the ball head. The diameter of the snap ring is a, and the diameter of the ball head is b, a>b. The ball head screw is snapped onto the cavity wall of the sleeve through the snap ring.

[0007] Furthermore, the distance between the two limiting ribs is c, a<c.

[0008] Furthermore, a screw column is provided below the ball head on the ball head screw, and the screw column below the snap ring is fixed in the screw hole.

[0009] Compared with the prior art, the beneficial effects of the utility model are: the utility model has a clever structural design, and the sleeve on the ball head screw interferes with the limiting rib on the bracket, so that the sleeve continues to rotate and the ball head screw thereon is disengaged, so that the snap ring on the ball head screw is located on the upper part of the limiting rib. At this time, the ball head screw is installed in place, and no tooling is required during the installation process to ensure that the ball head screw is installed in the pre-designed position. The operation is simple and quick, and the positioning is accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1This is a schematic diagram of the structure of the utility model after the ball head screw is installed in place;

[0011] Figure 2 This is a top view of the utility model after the ball head screw is installed in place;

[0012] Figure 3 for Figure 2 Sectional view at the middle BB;

[0013] Figure 4 This is a schematic diagram of the structure of a ball head screw and a sleeve according to the utility model. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0015] See also Figure 1-4 The technical solution provided by the utility model is: a fine-tuning screw positioning structure, including a ball screw 1 and a bracket 3, a sleeve 2 is sleeved on the ball screw 1, a screw hole 32 is arranged on the bracket 3, and raised limiting ribs 31 are arranged on both sides of the screw hole 32. The two limiting ribs 31 are arc-shaped, and the ball screw 1 is installed in the screw hole 32. During installation, one end of the ball screw 1 is first placed in the screw hole 32, and the sleeve 2 is screwed to make the ball screw 1 come out of the sleeve 2 and the ball screw 1 is fixed in the screw hole 32. During the process of tightening the ball screw 1 in the screw hole 32, the sleeve 2 will conflict with the limiting rib 31 to limit the position, and then continue to screw the sleeve 2. At this time, the ball screw 1 will come out of the sleeve 2, so that the ball screw 1 is installed in place.

[0016] Specifically, a cavity 21 is provided on the sleeve 2 , and one end of the ball screw 1 is located in the cavity 21 .

[0017] Specifically, one end of the ball head screw 1 is a ball head 12, and a snap ring 11 is arranged below the ball head 12. The diameter of the snap ring 11 is a, and the diameter of the ball head 12 is b, a>b. The ball head screw 1 is snapped onto the wall of the cavity 21 on the sleeve 2 through the snap ring 11. The ball head 12 is located in the cavity 21, and the snap ring 11 is snapped onto the wall of the mouth of the cavity 21, so that the ball head screw 1 can be smoothly removed from the sleeve 2.

[0018] Specifically, the distance between the two limiting ribs 31 is c, a<c, there is a gap between the snap ring 11 and the two limiting ribs 31 , and the limiting ribs 31 will not hinder the ball head screw 1 from being assembled into the screw hole 32 of the bracket 3 .

[0019] Specifically, below the ball head 12 on the ball head screw 1 is a screw column 13 , and the screw column 13 below the snap ring 11 is fixed in the screw hole 32 .

[0020] The installation process of the utility model is as follows: first, the screw column 13 of the ball head screw 1 is inserted into the screw hole 32, and then the sleeve 2 on the ball head screw 1 is screwed. As the sleeve 2 is screwed, the ball head screw 1 gradually passes through the screw hole 32. At this time, the sleeve 2 and the limiting ribs 31 on the bracket 3 are restrained. As the sleeve 2 continues to be screwed, the snap ring 11 on the ball head screw 1 in the sleeve 2 is released from the sleeve 2. At this time, the snap ring 11 on the ball head screw 1 is located at the upper part of the opening of the two limiting ribs 31, and the ball head screw 1 is installed to the pre-set position. The installation is in place and accurate, and the operation is simple and convenient.

[0021] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A fine-tuning screw positioning structure, comprising a ball head screw (1) and a bracket (3), characterized in that: The ball screw (1) is sleeved with a sleeve (2), the bracket (3) is provided with a screw hole (32), and raised limiting ribs (31) are provided on both sides of the screw hole (32). By screwing the sleeve (2), the ball screw (1) is released from the sleeve (2) and fixed in the screw hole (32). When the ball screw (1) is tightened in the screw hole (32), the sleeve (2) and the limiting ribs (31) are in contact with each other to limit the position.

2. A fine-tuning screw positioning structure according to claim 1, characterized in that: The sleeve (2) is provided with a cavity (21), and one end of the ball head screw (1) is located in the cavity (21).

3. A fine-tuning screw positioning structure according to claim 2, characterized in that: One end of the ball head screw (1) is a ball head (12), a snap ring (11) is arranged below the ball head (12), the diameter of the snap ring (11) is a, the diameter of the ball head (12) is b, a>b, and the ball head screw (1) is snap-connected to the wall of the cavity (21) on the sleeve (2) through the snap ring (11).

4. A fine-tuning screw positioning structure according to claim 3, characterized in that: The distance between the two limiting ribs (31) is c, a<c.

5. A fine-tuning screw positioning structure according to claim 4, characterized in that: Below the ball head (12) on the ball head screw (1) is a screw column (13), and the screw column (13) below the snap ring (11) is fixed in the screw hole (32).

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