Fine adjustment positioning screw

Abstract

The utility model relates to the technical field of positioning screws and discloses a fine adjustment positioning screw which comprises a screw body, the screw body comprises a screw head, a screw rod and a connecting block, the screw rod is arranged on the lower surface of the screw head, the connecting block is arranged at the end, away from the screw head, of the screw rod, and an installation groove and a limiting groove are formed in the upper surface of the screw head. One end of the mounting groove penetrates through the screw head and extends into the screw rod, an adjusting structure is mounted in the mounting groove, the two limiting grooves are fixed and are symmetrically arranged, the adjusting structure comprises a spring, a supporting block and a connecting rod, the spring is mounted on the lower surface of the supporting block, and the other end of the spring is mounted at the inner bottom of the mounting groove; and two mounting openings are formed in the upper surface of the supporting block and are symmetrically arranged, and pin rods are mounted in the mounting openings. The spring, the supporting block and the connecting rod are used in cooperation, a screw can be screwed by hand without the help of a screwdriver, and use is convenient and fast.

Description

Technical Field

[0001] The utility model relates to the technical field of positioning screws, in particular to a fine-tuning positioning screw. Background Art

[0002] Positioning screws are a type of fastener that is used in various fields. Screws are generally composed of a screw head and a screw rod.

[0003] The utility model patent application document with the publication number "CN210240242U" discloses a positioning screw, which is mainly composed of a screw head and a screw rod. The positioning screw groove of the technical solution passes through the head and extends to the connecting part, so even if the notch of the head is damaged, the thin wedge-shaped head of the screwdriver can be inserted into the groove part located at the connecting part for screwing, and the inner side wall of the groove part is bent toward the side wall of the connecting part, which also increases the contact area between the groove part and the thin wedge-shaped head. The positioning screw has a simple structure, is easy to use, has high practicality, and can be widely used.

[0004] The positioning screw disclosed in the above document has the following defects: when tightening or loosening the positioning screw, a screwdriver is usually required to overcome the resistance during twisting. If the staff does not have a screwdriver or other tools at hand, the screw cannot be unscrewed, which has poor practicality.

[0005] It can be seen from this that the existing positioning screws do not have a structure that is convenient for adjusting tightness, and it is necessary to improve the existing deficiencies and provide a fine-tuning positioning screw. Utility Model Content

[0006] The utility model aims to provide a fine-tuning positioning screw to solve the problems raised in the above-mentioned background technology.

[0007] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0008] The utility model discloses a fine-tuning positioning screw, comprising a screw body, the screw body comprising a screw head, a screw rod and a connecting block, the lower surface of the screw head is provided with a screw rod, the end of the screw rod away from the screw head is provided with a connecting block, the upper surface of the screw head is provided with a mounting groove and a limiting groove, one end of the mounting groove passes through the screw head and extends to the inside of the screw rod, an adjustment structure is installed inside the mounting groove, the limiting groove is fixed as two and symmetrically arranged, the adjustment structure comprises a spring, a support block and a connecting rod, a spring is installed on the lower surface of the support block, the other end of the spring is installed on the inner bottom of the mounting groove, the upper surface of the support block is provided with a mounting opening, the mounting opening is fixed as two and symmetrically arranged, a pin rod is installed inside the mounting opening, and the outer surface of the pin rod is rotatably connected with the connecting rod.

[0009] Furthermore, a guide groove is formed on the inner surface of the limiting groove, and a guide rod is formed on the outer surface of the connecting rod, and the guide rod is slidably connected inside the guide groove.

[0010] Furthermore, the outer surface of the screw head is provided with anti-slip lines, and the outer surface of the screw rod is provided with external threads.

[0011] Furthermore, a limiting structure is clamped inside the installation slot.

[0012] Furthermore, the limiting structure includes a pull ring and a limiting column, the limiting column is clamped in the inside of the installation groove, the upper surface of the limiting column is provided with a groove, the inside of the groove is provided with a pull ring, and the outer surface of the limiting column is in contact with the outer surface of the connecting rod.

[0013] Furthermore, a sponge protective layer is provided on the inner surface of the pull ring.

[0014] The utility model has the following beneficial effects:

[0015] (1) The utility model uses a spring, a support block and a connecting rod in coordination, so that the screw can be tightened by hand without the aid of a screwdriver, which is convenient and quick to use.

[0016] (2) The utility model can limit and fix the position of the connecting rod by setting a limit column, so as to prevent the connecting rod from popping out from the inside of the installation groove when not in use, thereby achieving a better fixing effect.

[0017] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a cross-sectional view of the overall structure of the utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the utility model when the connecting rod is unfolded;

[0022] Figure 4 This is a cross-sectional view of the screw head and screw rod structure of the utility model;

[0023] Figure 5 It is a schematic diagram of the adjustment structure and the limit structure of the utility model;

[0024] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0025] In the figure: 101, screw head; 10101, installation groove; 10102, limiting groove; 10103, guide groove; 10104, anti-slip texture; 102, screw rod; 10201, external thread; 103, connecting block; 2, adjustment structure; 201, spring; 202, support block; 20201, installation port; 203, connecting rod; 20301, guide rod; 3, pin rod; 4, limiting structure; 401, pull ring; 402, limiting column; 40201, groove. DETAILED DESCRIPTION

[0026] 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.

[0027] See also Figure 1 - Figure 5 As shown, the utility model is a fine-tuning positioning screw, including a screw body, the screw body including a screw head 101, a screw rod 102 and a connecting block 103, the lower surface of the screw head 101 is provided with a screw rod 102, the end of the screw rod 102 away from the screw head 101 is provided with a connecting block 103, the upper surface of the screw head 101 is provided with a mounting groove 10101 and a limiting groove 10102, one end of the mounting groove 10101 passes through the screw head 101 and extends to the inside of the screw rod 102, and the inside of the mounting groove 10101 is provided with a mounting groove 10101. There is an adjustment structure 2, the limit grooves 10102 are fixed into two and symmetrically arranged, the adjustment structure 2 includes a spring 201, a support block 202 and a connecting rod 203, the spring 201 is installed on the lower surface of the support block 202, the other end of the spring 201 is installed on the inner bottom of the installation groove 10101, the upper surface of the support block 202 is provided with an installation opening 20201, the installation opening 20201 is fixed into two and symmetrically arranged, a pin rod 3 is installed inside the installation opening 20201, and the outer surface of the pin rod 3 is rotatably connected to the connecting rod 203.

[0028] A guide groove 10103 is formed on the inner surface of the limiting groove 10102 , and a guide rod 20301 is formed on the outer surface of the connecting rod 203 . The guide rod 20301 is slidably connected to the inside of the guide groove 10103 .

[0029] The outer surface of the screw head 101 is provided with anti-slip patterns 10104 , and the outer surface of the screw rod 102 is provided with external threads 10201 .

[0030] The interior of the installation groove 10101 is clamped with the limiting structure 4.

[0031] The limiting structure 4 includes a pull ring 401 and a limiting column 402. The limiting column 402 is clamped in the inside of the installation groove 10101. The upper surface of the limiting column 402 is provided with a groove 40201. The pull ring 401 is installed in the groove 40201. The outer surface of the limiting column 402 abuts against the outer surface of the connecting rod 203.

[0032] The inner surface of the pull ring 401 is provided with a sponge protective layer.

[0033] When in use, first place the finger inside the pull ring 401, and then pull the pull ring 401 outward, so that the limiting column 402 is disengaged from the inside of the installation groove 10101, and the spring 201 recovers its elasticity, pushing the support block 202 to move upward, and while the support block 202 moves, the guide rod 20301 slides inside the guide groove 10103, so that the connecting rod 203 enters the inside of the limiting groove 10102 from the inside of the installation groove 10101, and a part of the connecting rod 203 extends out from the inside of the limiting groove 10102, and then the screw rod 102 is placed inside the installation hole, and then the finger pushes against the limiting column 402 to release the limiting column 402. Hold the connecting rod 203 and rotate the connecting rod 203 clockwise so that the screw rod 102 is fixed and installed through the external thread 10201. After the screw rod 102 is installed, place your finger inside the pull ring 401, place the limit column 402 at the entrance of the installation groove 10101, and push the limit column 402 to make the limit column 402 squeeze the connecting rod 203 and the support block 202 to move downward and reset. The position of the connecting rod 203 can be limited and fixed by the set limit column 402 to prevent the connecting rod 203 from popping out from the inside of the installation groove 10101 when not in use, thereby achieving a better fixing effect.

[0034] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A fine-tuning positioning screw, comprising a screw body, characterized in that: The screw body comprises a screw head (101), a screw rod (102) and a connecting block (103); the screw rod (102) is provided on the lower surface of the screw head (101); the connecting block (103) is provided on one end of the screw rod (102) away from the screw head (101); a mounting groove (10101) and a limiting groove (10102) are provided on the upper surface of the screw head (101); one end of the mounting groove (10101) passes through the screw head (101) and extends to the inside of the screw rod (102); an adjusting structure (2) is installed inside the mounting groove (10101); and the limiting grooves (10102) are fixed in two and symmetrically arranged; The adjustment structure (2) comprises a spring (201), a support block (202) and a connecting rod (203); the spring (201) is mounted on the lower surface of the support block (202); the other end of the spring (201) is mounted on the inner bottom of the mounting groove (10101); the upper surface of the support block (202) is provided with a mounting opening (20201); the mounting openings (20201) are fixed in two and symmetrically arranged; a pin rod (3) is mounted inside the mounting opening (20201); and the outer surface of the pin rod (3) is rotatably connected to the connecting rod (203).

2. A fine-tuning positioning screw according to claim 1, characterized in that: The inner surface of the limiting groove (10102) is provided with a guide groove (10103), the outer surface of the connecting rod (203) is provided with a guide rod (20301), and the guide rod (20301) is slidably connected inside the guide groove (10103).

3. The fine-tuning positioning screw according to claim 1, characterized in that: The outer surface of the screw head (101) is provided with anti-slip patterns (10104), and the outer surface of the screw rod (102) is provided with external threads (10201).

4. The fine-tuning positioning screw according to claim 1, characterized in that: The interior of the installation groove (10101) is snap-connected with the limiting structure (4).

5. A fine-tuning positioning screw according to claim 4, characterized in that: The limiting structure (4) comprises a pull ring (401) and a limiting column (402); the limiting column (402) is clamped inside the mounting groove (10101); a groove (40201) is provided on the upper surface of the limiting column (402); a pull ring (401) is installed inside the groove (40201); and the outer surface of the limiting column (402) abuts against the outer surface of the connecting rod (203).

6. A fine-tuning positioning screw according to claim 5, characterized in that: The inner surface of the pull ring (401) is provided with a sponge protective layer.

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