Self-adaptive aperture bolt

Abstract

The utility model discloses a self-adaptive aperture bolt, which relates to the technical field of bolts and comprises a first bolt head, the bottom end of the first bolt head is connected with a screw rod, a sleeve penetrates through the inner side of the first bolt head, the top end of the sleeve is connected with a second bolt head, and the bottom end of the sleeve is in threaded connection with a threaded column. A movable frame is fixed to the bottom of the threaded column. According to the utility model, through the arrangement of the sleeve, the threaded column, the circular truncated cone column, the movable frame and the like, when the threaded connection work is carried out between the screw rod and the nut, the external thread of the screw rod and the internal thread of the nut are loosely engaged, and the second bolt head is manually rotated, so that the sleeve is in threaded connection with the threaded column, and the threaded column is driven to move upwards; when the bolt is screwed, the circular truncated cone column and the movable frame move upwards to open the screw rod, the meshing force between the external thread of the screw rod and the internal thread of the nut can be effectively enhanced, the overall meshing effect is excellent, and the flexibility of the bolt adapting to the nut with the small error aperture is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bolts, in particular to an adaptive aperture bolt. Background Art

[0002] A bolt is a mechanical part, a cylindrical threaded fastener that is paired with a nut. It is a type of fastener consisting of a head and a screw (a cylinder with external threads). It needs to be matched with a nut to fasten two parts with through holes.

[0003] Existing bolts often have different degrees of engagement between the external thread of the bolt and the internal thread of the nut when they are threadedly connected to the nut, and the diameter of the bolt rod is difficult to adjust, which makes the bolt prone to falling off or damage. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the existing bolt, which is often prone to different degrees of engagement between the external thread of the bolt and the internal thread of the nut when performing threaded connection between the bolt and the nut, and the bolt rod diameter is difficult to adjust, which makes the bolt prone to falling off or damage. An adaptive aperture bolt is proposed.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] An adaptive aperture bolt, comprising:

[0007] The first bolt head, the bottom end of the first bolt head is connected to a screw rod, and a sleeve is passed through the inner side of the first bolt head, the top end of the sleeve is connected to the second bolt head, and the bottom end of the sleeve is threadedly connected to a threaded column, a movable frame is fixed to the bottom of the threaded column, and a slider is connected to the outer wall of the movable frame, a frustum column is sleeved on the middle part of the outer wall of the threaded column, an inner cavity is opened on the inner side of the screw rod, and a sliding groove is opened on the inner wall of the inner cavity, and the sliding groove and the slider are slidably connected.

[0008] Preferably, the screw rods are distributed in four groups, and the screw rods and the first bolt heads are slidingly arranged.

[0009] Preferably, the frustum column and the threaded column are welded, and the frustum column and the screw rod are abutted.

[0010] Preferably, the movable frame is a cross-shaped structure, and the movable frame forms a sliding structure through a slider, a sliding groove and a screw.

[0011] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0012] 1. In the present invention, by arranging the sleeve, threaded column, conical column and movable frame, when the screw and the nut are threadedly connected, the engagement between the external thread of the screw and the internal thread of the nut is loose, the second bolt head is manually rotated to thread the sleeve and the threaded column, thereby driving the threaded column to move upward, and the conical column and the movable frame are both moved upward to spread the screw, which can effectively enhance the engagement strength between the external thread of the screw and the internal thread of the nut, making the overall engagement effect excellent, and effectively improving the flexibility of the bolt to adapt to nuts with small error apertures. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the overall front structure of the present utility model;

[0014] Figure 2 This is a schematic diagram of the overall internal structure of the utility model;

[0015] Figure 3 This is a schematic diagram of the screw distribution structure in the utility model;

[0016] Figure 4 It is a schematic diagram of the structure of the movable frame in the utility model.

[0017] Legend:

[0018] 1. First bolt head; 2. Second bolt head; 3. Screw; 4. Casing; 5. Threaded column; 6. Cone column; 7. Movable frame; 8. Inner cavity; 9. Slide groove; 10. Slider. DETAILED DESCRIPTION

[0019] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] Reference Figure 1-4, an adaptive aperture bolt, comprising a first bolt head 1, the bottom end of the first bolt head 1 is connected to a screw rod 3, and the inner side of the first bolt head 1 is penetrated by a sleeve 4, the screw rod 3 is distributed in four groups, and the screw rod 3 and the first bolt head 1 are slidingly arranged, and four groups of screw rods 3 are provided, which can slide a certain distance in all directions, so as to enhance the bite force between the nut sleeved on the outside thereof, the top end of the sleeve 4 is connected to the second bolt head 2, and the bottom end of the sleeve 4 is threadedly connected to a threaded column 5, the bottom of the threaded column 5 is fixed with a movable frame 7, and the outer wall of the movable frame 7 is connected to a slider 10, the middle part of the outer wall of the threaded column 5 is sleeved with a frustum column 6, and the inner side of the screw rod 3 is provided with an inner cavity 8, A sliding groove 9 is provided on the inner wall of the inner cavity 8, and a sliding connection is formed between the sliding groove 9 and the slider 10. The conical column 6 and the threaded column 5 are welded, and the conical column 6 and the screw 3 are in contact. The conical column 6 moves up synchronously with the threaded column 5, and can expand the screw 3. The movable frame 7 has a cross-shaped structure, and the movable frame 7 forms a sliding structure with the slider 10, the sliding groove 9 and the screw 3. After the movable frame 7 moves up with the threaded column 5, the slider 10 on the outer wall of the movable frame 7 moves along the inclined sliding groove 9 on the upper part, so that the screw 3 can be expanded, and the conical column 6 is cooperated to complete the two-point expansion of the screw 3 to ensure that the screw 3 moves in the direction perpendicular to itself.

[0021] Working principle: When in use, the staff first threadedly connects the bolt and the nut. When the engagement between the external thread of the screw 3 and the internal thread of the nut is loose, the second bolt head 2 is manually rotated to thread the sleeve 4 and the threaded column 5, thereby driving the threaded column 5 to move upward, and the frustum column 6 and the movable frame 7 are both moved upward to support the screw 3, which can effectively enhance the engagement strength between the external thread of the screw 3 and the internal thread of the nut, making the overall engagement effect excellent, so that the bolt can adapt to nuts with small error apertures and complete the threaded connection work with them.

[0022] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An adaptive aperture bolt, comprising: The first bolt head (1) is characterized in that: the bottom end of the first bolt head (1) is connected to a screw rod (3), and a sleeve (4) is passed through the inner side of the first bolt head (1), the top end of the sleeve (4) is connected to the second bolt head (2), and the bottom end of the sleeve (4) is threadedly connected to a threaded column (5), a movable frame (7) is fixed to the bottom of the threaded column (5), and the outer wall of the movable frame (7) is connected to a slider (10), a truncated cone column (6) is sleeved on the middle part of the outer wall of the threaded column (5), an inner cavity (8) is opened on the inner side of the screw rod (3), and a sliding groove (9) is opened on the inner wall of the inner cavity (8), and the sliding groove (9) and the slider (10) are slidably connected.

2. The adaptive aperture bolt according to claim 1, characterized in that: The screw rods (3) are distributed in four groups, and the screw rods (3) and the first bolt heads (1) are arranged in a sliding manner.

3. The adaptive aperture bolt according to claim 1, characterized in that: The truncated cone column (6) and the threaded column (5) are welded, and the truncated cone column (6) and the screw rod (3) are in abutment with each other.

4. The adaptive aperture bolt according to claim 1, characterized in that: The movable frame (7) is a cross-shaped structure, and the movable frame (7) forms a sliding structure through a slider (10), a sliding groove (9) and a screw rod (3).

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