CN201851466U

CN201851466U - Conical cross recessed countersunk nut

Info

Publication number: CN201851466U
Application number: CN2010202966536U
Authority: CN
Inventors: 郑达铿
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-08-18
Filing date: 2010-08-18
Publication date: 2011-06-01
Anticipated expiration: 2020-08-18

Abstract

The utility model relates to a conical cross recessed countersunk nut comprising a cone (1), an upper end surface (2) vertical to the central line of the cone and a lower end surface (3) parallel to the upper end surface (2), wherein a central through hole which runs through the upper end surface (2) and the lower end surface (3) is internally provided with a thread (4), the upper end surface (2) is provided with four grooves (5) which are uniformly arranged around the periphery of the threaded hole, the extension line of each groove passes through the central point of the cone to form a crisscross. The conical cross recessed countersunk nut can enable a fastener to be hidden in a connector by matching with the existing cross recessed countersunk screw during use, can produce good firm and attractive effect, and is simple and convenient for application.

Description

A kind of cone cross countersunk nut

Technical field:

A kind of cone cross countersunk head mother Luo belongs to the fastening piece class in universal machine field.

Background technique:

Luo silk and mother Luo are the most frequently used fastening meanss, can two or many objects be connected and fixed by through hole.When self containing the Luo line that is complementary with the Luo silk in the connected piece, just do not need mother's Luo help, otherwise the Luo silk must rely on mother Luo just can play the effect that is connected and fixed.Certainly, be connected and fixed in addition other methods, as riveted joint, welding, bonding, heat seal etc., but these methods all exist inconvenience to change and the shortcoming of dismounting.Also have a kind of self tapping Luo silk, under the less demanding situation of join strength, use.Therefore, the most general fastening means of the female Cheng Liao of the Luo silk of all size, size, shape and Luo.

Luo silk in the market is all kinds of more, and hexagon head is arranged, hexagon socket head, semicircle one word, crosshead, the Luo silk of countersunk head (cone head) word, the first-class various sizes of cross and specification.It is then less to be attached thereto the female kind of the Luo that connects, and mostly is hexagonal mother Luo, the stubborn butterfly Luo mother of a kind of hand and cylindrical body mother Luo of uniform striped or reticulate pattern is also arranged, but use less.

When needs require the applied fastening piece of link (Luo silk and mother Luo) not exposed, and requirement and link are when coincideing, a kind of cone cross countersunk head Luo parent phase fit applications of countersunk head cross Luo silk and the design just can address the above problem effectively, and uses comparatively simple, convenient.

The model utility content:

The problem that the utility model patent need solve, i.e. the purpose of this patent, be by a kind of cone cross countersunk head Luo female with cross countersunk head Luo silk fit applications, attractive in appearance, firm purpose when reaching connected piece and connecting.

The technical problem of the utility model patent can adopt following measure to solve:

A kind of cone cross countersunk head mother Luo, it is characterized in that: mainly by cone (1), the upper-end surface vertical (2) with the cone center line, the lower end surface (3) parallel with upper-end surface (2), lower end surface (3) diameter is less than upper-end surface (2), in the central through bore of perforation upper-end surface (2) and lower end surface (3) Luo line (4) is set, upper-end surface (2) are provided with around the stupid Luo pit of four road grooves (5), and the elongation line of per pass groove is formed cross by the circular cone central point.

The technical problem of the utility model patent can also adopt following measure to solve:

1, a kind of cone cross countersunk head mother Luo, four each bottom land of road groove (5) of described upper-end surface (2) are tilted toward interior (cone center) by outer, and groove 5 can coincide with cross Luo silk screwdriver bit.

2, a kind of cone cross countersunk head mother Luo, four each bottom land of road groove (5) of described upper-end surface (2) are parallel, can coincide with a word Luo silk screwdriver bit.

3, a kind of cone cross countersunk head mother Luo, described through hole Luo line (4) is the blind hole inner thread, to the some degree of depth of cone (1), upper-end surface (2) set cross recess (5) coincide with cross Luo silk screwdriver bit the blind hole inner thread by lower end surface (3).

4, a kind of cone cross countersunk head mother Luo, described through hole Luo line (4) is the blind hole inner thread, to the some degree of depth of cone (1), (2) are cylindrical body (7) to the blind hole inner thread to the upper-end surface by blind hole inner thread (4) end by lower end surface (3).

5, a kind of cone cross countersunk head mother Luo, cone (1) and cylindrical body (7) process respectively, by butt-joint processing integrator.

6, a kind of cone cross countersunk head mother Luo, uniform four road grooves (6) around described cone (1) the awl body with the same horizontal plane of groove (5) of upper-end surface (2), are convenient to add clamping apparatus location in man-hour.

7, a kind of cone cross countersunk head mother Luo, the angle that described cone (1) tapering is decided to be international bit is 120 °.

The beneficial effect of model utility is:

1, because a kind of cone cross countersunk head mother Luo of the utility model patent, with (cone) cross countersunk head Luo silk fit applications, fastening piece two is hidden fully and be fit in the connected piece, both reached and be fastenedly connected, exposed again aesthetic also can make connected piece reduce windage simultaneously and the fluid mechanics effect that produces.

2, because a kind of cone cross countersunk head mother Luo of the utility model patent, with (cone) cross countersunk head Luo silk fit applications, as long as with connected piece through hole chamfering (identical) with Luo female coupling tap body angle, just can be wherein with the female income of Luo, simply, quick and easy, can improve work efficiency.

3, owing to a kind of cone cross countersunk head mother Luo of the utility model patent, with (cone) cross countersunk head Luo silk fit applications, applied assistant tool is that an existing cross and a word Luo silk are criticized, and need not to acquire other instruments.

4, because the female upper-end surface of a kind of cone cross countersunk head Luo (2) is provided with cross recess (5) and cone (1) is bored body groove (6) all around, can locate the worker and press from both sides the position, no matter impact briquetting, punching, boring, tapping spot welding all can be used respective planes groove (5) and cone groove (6) as worker's folder of location, process also very convenient.

5, because a kind of cone cross countersunk head Luo female coupling tap body (1) tapering can be decided to be 120 ° of international bits, processing and assembling can reach standardization.

Description of drawings:

Fig. 1 is a kind of cone cross countersunk head mother's Luo a sectional view

Fig. 2 is a kind of cone cross countersunk head mother's Luo a plan view

Fig. 3 is a kind of cone cross countersunk head mother's Luo a rear view

Fig. 4 Fig. 5 is the female cross-sectional schematic of a kind of cone cross countersunk head mother's Luo blind hole Luo

Fig. 6 is a kind of cone cross countersunk head mother's Luo upper-end surface (a 2) plan view

Fig. 7 is the female connection diagram of countersunk head Luo silk and a kind of cone cross countersunk head Luo

Fig. 8 Fig. 9 is countersunk head Luo silk and a kind of cone cross countersunk head mother Luo (blind threaded) connection diagram

Embodiment:

1, from Fig. 1,2,3 a kind of cone cross countersunk head mother Luo of the utility model patent as can be known, comprise: mainly by cone (1), the upper-end surface vertical (2) with the cone center line, the lower end surface (3) parallel with upper-end surface (2), in the central through bore of perforation upper-end surface (2) and lower end surface (3) Luo line (4) is set, upper-end surface (2) is provided with around the uniform Luo pit of four road grooves (5), and the elongation line of per pass groove is formed cross by the circular cone central point.

2, a kind of cone cross countersunk head mother Luo of the utility model patent as can be seen from Figure 1, comprising: described four each bottom land of road groove (5) are parallel, can coincide with a word Luo silk screwdriver bit.

3, from Fig. 4,5,6 a kind of cone cross countersunk head mother Luo of the utility model patent as can be known, comprise: described through hole Luo line (4) is the blind hole inner thread, to the some degree of depth of cone (1), upper-end surface (2) set cross recess (5) coincide with cross Luo silk screwdriver bit the blind hole inner thread by lower end surface (3).

4, a kind of cone cross countersunk head Luo of the utility model patent is female built-in in the connected piece body with cross countersunk head Luo silk fit applications as can be known from Fig. 7,8,9.

Claims

1. cone cross countersunk head mother Luo, it is characterized in that: cone (1), the upper-end surface vertical (2) with the cone center line, the lower end surface (3) parallel with upper-end surface (2), lower end surface (3) diameter is less than upper-end surface (2), in the central through bore of perforation upper-end surface (2) and lower end surface (3) Luo line (4) is set, upper-end surface (2) are provided with around the uniform Luo pit of four road grooves (5), and the elongation line of per pass groove is formed cross by the circular cone central point.

2. a kind of cone cross countersunk head mother Luo according to claim 1, four each bottom land of road groove (5) of described upper-end surface (2) are by being that cone is centroclinal toward in outward, groove 5 can coincide with cross Luo silk screwdriver bit.

3. a kind of cone cross countersunk head mother Luo according to claim 1, four each bottom land of road groove (5) of described upper-end surface (2) are parallel, can coincide with a word Luo silk screwdriver bit.

4. a kind of cone cross countersunk head mother Luo according to claim 1, described through hole Luo line (4) is the blind hole inner thread, to the some degree of depth of cone (1), upper-end surface (2) set cross recess (5) coincide with cross Luo silk screwdriver bit the blind hole inner thread by lower end surface (3).

5. a kind of cone cross countersunk head mother Luo according to claim 1, described through hole Luo line (4) is the blind hole inner thread, to the some degree of depth of cone (1), (2) are cylindrical body (7) to the blind hole inner thread to the upper-end surface by blind hole inner thread (4) end by lower end surface (3).

6. a kind of cone cross countersunk head mother Luo according to claim 1, cone (1) and cylindrical body (7) process respectively, by butt-joint processing integrator.

7. a kind of cone cross countersunk head mother Luo according to claim 1, uniform four road grooves (6) around described cone (1) the awl body are with the same horizontal plane of groove (5) of upper-end surface (2).

8. a kind of cone cross countersunk head mother Luo according to claim 1, the angle that described cone (1) tapering is decided to be international bit is 120 °.