CN211039335U

CN211039335U - Cross countersunk screw

Info

Publication number: CN211039335U
Application number: CN201921947861.5U
Authority: CN
Inventors: 林乾来; 陈光赢; 曹江华; 林晓丽
Original assignee: Shanghai Hongting Fastener Manufacturing Co ltd
Current assignee: Shanghai Hongting Fastener Manufacturing Co ltd
Priority date: 2019-11-11
Filing date: 2019-11-11
Publication date: 2020-07-17
Anticipated expiration: 2029-11-11

Abstract

The utility model relates to a cross counter bore screw belongs to the technical field of fastener, and it includes the nut, is provided with the cross recess on the nut, deviates from the one end fixedly connected with screw rod of cross recess on the nut, the tip of being connected with the screw rod on the nut is provided with the strengthening rib corresponding and evenly distributed with the cross recess. The utility model discloses the effect of nut intensity is strengthened to the utensil.

Description

Cross countersunk screw

Technical Field

The utility model belongs to the technical field of the technique of fastener and specifically relates to a cross counter sink screw is related to.

Background

The cross recessed countersunk head screw belongs to one type of screw, and the head of the cross recessed countersunk head screw is flat-headed and is also countersunk or semi-countersunk. The countersunk head screw can also be called a flat head screw, a countersunk head screw, a semi-countersunk head screw and a semi-countersunk head screw. Screws are used as connecting members for connecting two objects, and the head of the screw generally protrudes above the surface of the object to be connected, so that the surface is not flat. The countersunk head screw can sink to the lower surface to enable the surface to be flat, and a countersunk hole needs to be drilled at the corresponding position of the countersunk head for a hard object.

Countersunk head screws are mostly used in places which need to be installed and the surfaces of parts cannot be provided with protrusions, in the conventional screw, as shown in fig. 1, a screw 1 comprises a nut 2 and a screw rod 3, the top end of the screw rod 3 is a conical drill bit 502, and a cross groove 201 is formed in the end face, far away from the drill bit 502, of the nut 2. In order to meet the normal use of the screw 1, the depth of the cross-shaped groove 201 is generally enough to allow the tip of the screwdriver to be inserted into the cross-shaped groove 201, so that the end surface of the nut 2 facing away from the cross-shaped groove 201 is weak, and the nut 2 may be damaged after a long time.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a cross counter sink screw, it has the effect of strengthening nut intensity.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme: the cross countersunk head screw comprises a screw cap, wherein a cross groove is formed in the screw cap, a screw rod is fixedly connected to one end, deviating from the cross groove, of the screw cap, and reinforcing ribs which correspond to the cross groove and are uniformly distributed are arranged at the end part, connected with the screw rod, of the screw cap.

By adopting the technical scheme, the reinforcing ribs corresponding to the cross grooves are arranged on the back surfaces of the cross grooves on the screw cap, so that the positions of the cross grooves on the screw cap can be enhanced, and the cross grooves are prevented from being damaged when the screw driver is used for screwing the cross grooves.

The utility model discloses further set up to: and an annular plate is connected between every two adjacent reinforcing ribs.

Through adopting above-mentioned technical scheme, through connect the annular slab on two adjacent strengthening ribs, can form netted additional strengthening alternately with the strengthening rib.

The utility model discloses further set up to: and a reinforcing surface which is contacted with the nut and the two adjacent reinforcing ribs is arranged at the position of a sharp corner which is formed by the end surface of the nut and the two adjacent reinforcing ribs.

Through adopting above-mentioned technical scheme, can form further the enhancement to the closed angle position that two adjacent strengthening ribs and nut terminal surface formed through setting up the reinforced surface, prevent that closed angle position from taking place to tear.

The utility model discloses further set up to: and a rubber pad is fixedly connected to the side wall in the cross groove.

Through adopting above-mentioned technical scheme, set up the rubber pad on cross recess inside lateral wall, can alleviate the degree of damage of screwdriver to cross recess

The utility model discloses further set up to: the cross groove is long and short in two directions.

Through adopting above-mentioned technical scheme, when "cross" screwdriver caused the damage to the cross recess and made the screw can't dismantle, can utilize "a font" screwdriver to dismantle, realize dismantling the screw through inserting "a font" screwdriver in longer groove.

The utility model discloses further set up to: the screw rod is connected with a drill body at one end far away from the screw cap, and the drill body is provided with a chip removal groove for storing sundry chips.

By adopting the technical scheme, the chip groove is formed in the drill body, so that generated impurity chips can be stored in the chip groove when the screw is screwed into a plate.

The utility model discloses further set up to: the screw is provided with threads, one end of each thread, which is adjacent to the drill body, is provided with a notch, and the notches enable the threads to be communicated with the chip grooves.

By adopting the technical scheme, when the storage capacity of the sundry chips in the chip groove is overlarge, the sundry chips can slide into the thread of the screw rod along the notch.

The utility model discloses further set up to: the tail end of the drill body is a conical drill bit.

Through adopting above-mentioned technical scheme, the drill bit adopts the toper structure, can reduce required power when screwing the screw into panel to alleviate the degree of cross recess damage.

To sum up, the utility model discloses a beneficial technological effect does:

1. the reinforcing ribs corresponding to the cross grooves are arranged on the back surfaces of the cross grooves on the screw cap, so that the strength of the cross grooves on the screw cap can be enhanced, and the cross grooves are prevented from being damaged when being screwed by a screwdriver;

2. the strength of the nut can be further enhanced by arranging a reinforcing surface which is in contact with the nut at the position of a sharp corner formed by the end surface of the nut and two adjacent reinforcing ribs and connecting an annular plate between the two adjacent reinforcing ribs;

3. the rubber pad is arranged on the side wall of the cross groove, so that the degree of abrasion of the cross groove by a screwdriver can be reduced.

Drawings

Fig. 1 is a schematic structural diagram of the background art.

Fig. 2 is a schematic structural diagram of the first embodiment.

FIG. 3 is a schematic view of a nut according to an embodiment of the present invention.

Fig. 4 is a schematic structural diagram of the second embodiment.

FIG. 5 is a schematic structural view of a second nut according to the embodiment.

In the figure, 1, screw; 2. a nut; 201. a cross groove; 202. a rubber pad; 3. a screw; 301. a thread; 302. a notch; 4. a reinforcing portion; 401. reinforcing ribs; 402. a connecting surface; 403. a reinforcing surface; 404. an annular plate; 5. a drill body; 501. a polish rod; 502. a drill bit; 503. a chip groove.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The first embodiment is as follows: as shown in fig. 2 and 3, for the utility model discloses a cross counter sink screw, including screw 1, the one end of screw 1 is circular shape nut 2, be provided with the cross recess 201 isometric and not contact with nut 2 border on two directions on nut 2's terminal surface, deviate from one end with cross recess 201 on nut 2 and be connected with screw rod 3, be provided with the rib 4 that is used for strengthening nut 2 in the junction of screw rod 3 and nut 2, the one end of keeping away from rib 4 on screw rod 3 is connected with bores body 5, is provided with screw thread 301 on screw rod 3 between rib 4 and the bore body 5.

The reinforcing part 4 comprises four reinforcing ribs 401 uniformly distributed on the end surface of the nut 2, and the four reinforcing ribs 401 exactly correspond to the four parts of the cross-shaped groove 201. Four strengthening ribs 401 surround the tip that screw rod 3 is close to nut 2 and are the circumference array and arrange, and be connected between two adjacent strengthening ribs 401, and the face relative with the screw rod 3 lateral wall is the face 402 of connecting that inclines, and the one end that is close to nut 2 on the face 402 of connecting is connected with the outer edge of nut 2, and the one end that is close to screw rod 3 on the face 402 of connecting is connected with the lateral wall of screw rod 3.

The end of the drill body 5 connected with the screw 3 is a polished rod 501, the other end of the polished rod 501 is connected with a conical drill 502, the drill body 5 is provided with a chip groove 503, and when the screw 1 is screwed into a plate, generated scraps can be stored in the chip groove 503. The chip grooves 503 are communicated with the screw threads 301 through the notches 302, so that the generated chips can continuously slide upwards along the screw threads 301 on the screw rod 3 from the chip grooves 503.

The implementation principle of the embodiment is as follows: in the use process, the screw 1 is screwed to enable the screw 1 to be positioned in two plates to be connected, in the screwing process, sundries on the plates can be stored in the chip removing groove 503, and when the storage amount is too large, the sundries can slide into the thread 301 of the screw rod 3 along the notch 302. Because the cross-shaped groove 201 required by screwing is formed in the nut 2, the position of the cross-shaped groove 201 on the nut 2 is weak, the nut 2 is easy to damage in the screwing process, and the nut 2 can be reinforced by arranging the four reinforcing ribs 401 on the nut 2 at the positions corresponding to the cross-shaped groove 201, so that the possibility that the nut 2 is damaged is reduced.

Example two: a cross countersunk head screw, as shown in fig. 4 and 5, is different from the first embodiment in that, since two adjacent reinforcing ribs 401 and the end surface of a nut 2 enclose a sharp corner, the sharp corner may be damaged by the action of a screwdriver force during screwing, in order to strengthen the strength of the sharp corner, a reinforcing surface 403 is arranged at the sharp corner, and the reinforcing surface is in contact with the end surface of the nut 2 and two adjacent reinforcing ribs 401, and an annular plate 404 with an outer surface flush with the connecting surface 402 is connected to the middle position of two adjacent reinforcing ribs 401.

Due to the fact that the plates after combination often need to be detached due to actual requirements, the screw 1 needs to be detached from the plates by screwing the cross groove 201 on the screw cap 2 with the screwdriver, in the process, the sharp corner of the cross groove 201 is ground flat due to friction between the screwdriver and the cross groove 201, and therefore the screw 1 cannot be detached, and the degree of abrasion of the cross groove 201 can be reduced by bonding the rubber pad 202 on the cross groove 201.

By replacing the cross-shaped grooves 201 having the same length in both directions with the cross-shaped grooves 201 extending in one direction to the boundary position of the nut 2, and by extending the cross-shaped grooves 201 in one direction, it is possible to remove the screw 1 by inserting a driver into the longer grooves with a "straight" driver after the cross-shaped grooves 201 are worn.

The implementation principle of the embodiment is as follows: in the use process, the screw 1 is screwed to enable the screw 1 to be positioned in two plates to be connected, in the screwing process, sundries on the plates can be stored in the chip removing groove 503, and when the storage amount is too large, the sundries can slide into the thread 301 of the screw rod 3 along the notch 302. The nut 2 can be further reinforced by providing a reinforcing surface 403 at the position of the sharp corner formed by the two adjacent ribs 401 and the end surface of the nut 2, and by coupling the annular plate 404 between the two adjacent ribs 401. The rubber pad 202 is arranged at the position of the cross-shaped groove 201, so that the abrasion degree of the position of the cross-shaped groove 201 when the screw 1 is screwed by a screwdriver can be prevented. By setting the cross-shaped groove 201 to be long and short, when the screw 1 cannot be detached by the cross-shaped screwdriver after the cross-shaped groove 201 is worn, the screw 1 can be detached by inserting the screwdriver into the long groove by the aid of the straight screwdriver.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a cross counter sink screw, includes nut (2), is provided with cross recess (201) on nut (2), deviates from one end fixedly connected with screw rod (3) of cross recess (201) on nut (2), its characterized in that: the end part of the screw cap (2) connected with the screw rod (3) is provided with reinforcing ribs (401) which correspond to the cross groove (201) and are uniformly distributed, and an annular plate (404) is connected between every two adjacent reinforcing ribs (401).

2. A cross countersunk head screw according to claim 1, wherein: and a reinforcing surface (403) which is in contact with the end surface of the nut (2) and the sharp corner position surrounded by the two adjacent reinforcing ribs (401) is arranged at the position of the sharp corner surrounded by the end surface of the nut and the two adjacent reinforcing ribs.

3. A cross countersunk head screw according to claim 1, wherein: and a rubber pad (202) is fixedly connected to the inner side wall of the cross groove (201).

4. A cross countersunk head screw according to claim 1, wherein: the cross groove (201) is a cross groove (201) which is long and short in two directions.

5. A cross countersunk head screw according to claim 1, wherein: one end of the screw rod (3) far away from the screw cap (2) is connected with a drill body (5), and a chip discharge groove (503) for storing sundry chips is arranged on the drill body (5).

6. A cross countersunk head screw according to claim 5, wherein: the screw rod (3) is provided with threads (301), one end of each thread (301) close to the drill body (5) is provided with a notch (302), and the notches (302) enable the threads (301) to be communicated with the chip grooves (503).

7. A cross countersunk head screw according to claim 5, wherein: the tail end of the drill body (5) is provided with a conical drill bit (502).