Fastening screw

Abstract

The utility model discloses a fastening screw which comprises a screw thread part and a screw end part, the screw thread part comprises a screw rod part and a screw leading-in part arranged below the screw rod part, the screw rod part is provided with first threads arranged at intervals, the leading-in part is provided with second threads, the first threads are arranged in three groups to form two groups of spacing positions, and the second threads are arranged in two groups of spacing positions. The screw end part comprises a first end part, the first end part is connected with the screw rod part, a fixing groove is formed in the center of the upper end surface of the first end part towards one side of the screw rod part, grooves communicated with the fixing groove are formed in two groups of intervals, a positioning plate is arranged in the fixing groove, a limiting part penetrating through the grooves is arranged on the positioning plate, an inserting piece is further arranged in the fixing groove, and the inserting piece limits the positioning plate. The detachable positioning plate and the limiting part are arranged and used for improving the stability of the screw after connection, use is convenient and fast, the structure is stable, and the overall connection fastening performance of the screw is also improved; and meanwhile, the second end part is arranged by using a screw, so that the stability is ensured during rotation.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of connecting piece, concretely relates to a fastening screw. BACKGROUND

[0002] The existing screw structure is generally single, including screw end and screw thread part, the screw thread part is connected with the external position by screwing, and fastening is realized. However, in the above structure, the screw is loose and gradually falls off in the long connection process, and the loosening phenomenon is more obvious when applied to some vibration working conditions. In order to strengthen the fastening property of connection, the existing Chinese utility model patent with application number 202022500717.6 discloses a screw with high fastening property, which achieves the purpose of increasing the stability of connection by setting diagonal lines and milling ribs, but in the above structure, the setting of diagonal lines is relatively complicated, and the fastening effect is also limited, so there is room for improvement. UTILITY MODEL CONTENTS

[0003] The utility model aims at the deficiency in the above background art, and provides a fastening screw with good fastening effect.

[0004] To achieve the above object, the utility model discloses a fastening screw, which adopts the following technical scheme:

[0005] A fastening screw, including screw thread part and screw end, the screw thread part includes screw rod part and screw guide part arranged below the screw rod part, the screw rod part is provided with first threads arranged at intervals, the guide part is provided with second threads, the first threads are provided with three groups of intervals, the screw end includes a first end, the first end is connected with the screw rod part, a fixing groove is formed in the first end and arranged at the center of the upper end face and on one side of the screw rod part, the two groups of intervals are provided with grooves communicated with the fixing groove, a positioning plate is arranged in the fixing groove, the positioning plate is provided with a limiting part penetrating through the groove, and an insert is further arranged in the fixing groove to limit the positioning plate.

[0006] The further improvement of the utility model discloses a fastening screw lies in that the grooves in each group of intervals are arranged in two groups and arranged oppositely, and the positioning plate is arranged in two groups and arranged cooperatively.

[0007] The further improvement of the utility model discloses a fastening screw lies in that the upper end of the positioning plate is provided with a horizontal plate, the upper end face of the first end is provided with a containing groove for containing the horizontal plate, and the containing groove is larger than the horizontal plate.

[0008] The further improvement of the utility model discloses a fastening screw lies in that the first end is provided with a second end above, the upper end of the second end is arc-shaped, the lower end face of the second end is connected with the insert at the center, the upper end face of the first end is provided with a plurality of insertion grooves, and the lower end face of the second end is provided with an insertion rod inserted into the insertion grooves.

[0009] The further improvement of the utility model lies in that the insert is a special-shaped piece for filling the rest space after the positioning plate is arranged in the fixing groove.

[0010] Compared with the prior art, the utility model has the beneficial effects that:

[0011] The positioning plate and the limiting portion which can be disassembled are arranged to increase the stability after the screw is connected, convenient to use, stable in structure, and the overall connection fastening performance of the screw is improved, and meanwhile, the second end portion is arranged to ensure the stability when the screw rotates. BRIEF DESCRIPTION OF DRAWINGS

[0012] Fig. 1 It is a structural schematic view of the utility model;

[0013] Fig. 2 It is a top view structural schematic view of the first end portion and the positioning plate of the utility model;

[0014] Fig. 3 It is a top view structural schematic view of the first end portion of the utility model.

[0015] In the drawing: 1, screw rod portion, 2, screw lead-in portion, 3, first thread, 4, second thread, 5, first end portion, 6, second end portion, 7, groove, 8, fixing groove, 9, accommodating groove, 10, insertion groove, 11, horizontal plate, 12, positioning plate. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0017] As shown in the drawing, Figs. 1 to 3 A fastening screw, including screw thread portion and screw end portion, the screw thread portion includes screw rod portion 1 and screw lead-in portion 2 arranged below the screw rod portion, the screw rod portion is provided with first thread 3 arranged at intervals, the screw lead-in portion is provided with second thread 4, the first thread is provided with three groups of intervals, the screw end portion includes first end portion 5, the first end portion is connected with the screw rod portion, and the upper end face of the first end portion is a plane. The fixed groove 8 is arranged on the upper end face center of the first end portion to one side of the screw rod portion, the two groups of intervals are provided with the groove 7 communicated with the fixed groove, the positioning plate 12 is arranged in the fixed groove, the limiting portion is arranged through the groove on the positioning plate, and the insert is further arranged in the fixed groove. The reverse thread can be arranged on the outer side of the limiting portion.

[0018] The recesses at each group of intervals are provided with two groups, which are oppositely arranged, and the positioning plates are provided with two groups of matched arrangement.

[0019] The upper end of the positioning plate is provided with a horizontal plate 11, and the upper end face of the first end portion is provided with a containing groove 9 for containing the horizontal plate, and the containing groove is larger than the horizontal plate. The positioning plate can be an arc-shaped long plate, and the arc shape is matched with the groove wall of the fixing groove.

[0020] Further, the first end portion is provided with a second end portion 6 above, the upper end of the second end portion is arc-shaped, the second end face is connected to the plug-in part in the center of the lower end face, the upper end face of the first end portion is provided with a plurality of insertion grooves 10, and the lower end face of the second end portion is provided with an insertion rod inserted into the insertion groove.

[0021] Further, the plug-in part is a special-shaped part for filling the remaining space after the positioning plate is arranged in the fixing groove. The stability during screw rotation is ensured. The upper end of the second end portion is further provided with a cross groove.

[0022] The working principle of the utility model is as follows: the second end portion is inserted into the first end portion, then the screw works is connected, after being in place, the second end portion is pulled out, the positioning plate is arranged in the fixing groove, then the second end portion is inserted again, at this time, the limiting part abuts against the external connecting groove, the loosening is prevented, and the connection fastening is improved.

[0023] It is obvious for those skilled in the art that the utility model is not limited to the details of the above-mentioned exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the utility model is defined by the appended claims instead of the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model. Any reference signs in the claims should not be regarded as limiting the involved claims.

Claims

1. A fastening screw, characterized in that: The screw includes a screw thread portion and a screw end portion. The screw thread portion includes a screw shank portion and a screw guide portion located below the screw shank portion. The screw shank portion has a first thread arranged at intervals, and the guide portion has a second thread. The first thread has three sets forming two sets of intervals. The screw end portion includes a first end portion connected to the screw shank portion. The center of the upper end face of the first end portion is provided with a fixing groove on one side of the screw shank portion. The two sets of intervals are provided with grooves communicating with the fixing grooves. A positioning plate is provided in the fixing groove. The positioning plate has a limiting portion passing through the groove. An insert is also provided in the fixing groove, and the insert limits the positioning plate.

2. A fastening screw according to claim 1, characterized in that: Two sets of grooves are provided at each interval, arranged opposite each other, and two sets of positioning plates are provided to cooperate with each other.

3. A fastening screw according to claim 2, characterized in that: The positioning plate has a horizontal plate at its upper end, and the upper surface of the first end has a receiving groove for accommodating the horizontal plate, the receiving groove being larger than the horizontal plate.

4. A fastening screw according to claim 3, characterized in that: A second end is provided above the first end. The upper end of the second end is arc-shaped. The center of the lower end face of the second end is connected to the plug. The upper end face of the first end is provided with multiple slots, and the lower end face of the second end is provided with a plug rod for inserting into the slots.

5. A fastening screw according to claim 4, characterized in that: The plug-in is an irregularly shaped part that is adapted to fill the remaining space after the positioning plate is placed in the fixed groove.

Images