CN213165108U

CN213165108U - Fastener for accommodating internal hexagonal wrench

Info

Publication number: CN213165108U
Application number: CN202022206134.2U
Authority: CN
Inventors: 马卓
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-09-30
Filing date: 2020-09-30
Publication date: 2021-05-11
Anticipated expiration: 2030-09-30

Abstract

The utility model belongs to the technical field of fasteners, in particular to a fastener for accommodating an inner hexagonal wrench; the fastener comprises a fastener body, wherein the fastener body comprises a thread part and a driving part, and the thread part is arranged on the outer side of the fastener body; the driving part is a concave accommodating space at the end part of the fastener body; the drive section includes: cutting edges, wherein the number of the cutting edges is six, and the cutting edges are used for forming a hexagonal accommodating space; the notch is arranged at the junction of the adjacent trimming edges; the number of the interference parts is n, and n is 1, 2, 3, 4, 5 or 6; the attaching parts are arranged between the adjacent notches and are complete planes, the number of the attaching parts is m, and m = 6-n; the trimming is used for being in contact with the outer wall surface of the inner hexagonal wrench, and transmitting the torque obtained from the inner hexagonal wrench from the driving part to the threaded part so as to realize torque transmission; can accommodate the inner hexagon spanner in the prior art and simultaneously reduce the angle grinding and the slipping during the use.

Description

Fastener for accommodating internal hexagonal wrench

Technical Field

The utility model belongs to the technical field of the fastener, concretely relates to fastener of holding allen key.

Background

Fasteners are a generic term for a class of mechanical parts used to fasten two or more parts (or components) together as a unit. The end of the inner hexagonal fastener is provided with a concave hexagonal cylindrical deep hole, and the inner hexagonal fastener comprises an inner hexagonal bolt, an inner hexagonal screw rod, an inner hexagonal stud and the like.

For socket head fasteners, a tool such as a socket head wrench applies torque to the fastener through its hexagonally shaped blind hole.

However, in the process of implementing the technical solution of the invention in the embodiments of the present application, the inventors of the present application find that the above technical problems at least have the following technical problems:

however, due to such engagement, the corresponding socket wrench may be aged and fatigued in advance and fail due to repeated pressure applied to the inner wall of the socket deep hole of the socket fastener by its own top corner, and the hexagonal inner corner of the socket fastener may be worn, especially when the bolt is rusted to cause large loosening force or is too hard to tighten. After torque is applied to the fastener by the wrench, the fastener may become easily stripped due to worn internal corners and insufficient interaction with the wrench, and even damage the socket head fastener, rendering it impossible to remove.

The inner plum blossom fastener (such as an inner plum blossom bolt) is changed to enter and exit on the basis of the inner hexagonal driving part, but the contact surface of the inner plum blossom fastener and a wrench is too small when the inner plum blossom fastener is used, the inner plum blossom fastener is easy to slip when being screwed and disassembled, and some inner plum blossom fasteners need to use corresponding wrenches. Other dysmorphism hole fasteners need corresponding special spanner, are difficult to popularize and apply.

Therefore, the conventional fastener capable of accommodating the allen key (also called an allen key) often generates corner grinding and slipping phenomena during use, which causes inconvenience to users.

Disclosure of Invention

In order to overcome the disadvantages of the prior art, the utility model provides a fastener of a holding inner hexagonal wrench which can hold the inner hexagonal wrench in the prior art and can simultaneously reduce the angle grinding and the slipping during the use.

The utility model discloses a realize through following technical scheme: a fastener for accommodating a socket head wrench comprises a fastener body, wherein the fastener body comprises a thread part and a driving part,

the thread part is arranged on the outer side of the fastener body;

the driving part is a concave accommodating space at the end part of the fastener body; the driving part includes:

the number of the trimming edges is six, and the trimming edges are used for forming the hexagonal accommodating space;

the notch is arranged at the junction of the adjacent cutting edges;

the number of the interference parts is n, and n is 1, 2, 3, 4, 5 or 6;

the attaching parts are arranged between the adjacent notches and are a complete plane, the number of the attaching parts is m, and m = 6-n;

the cutting edge consists of the abutting part or the abutting part and the attaching part;

the notch can accommodate each convex angle of the inner hexagonal wrench, the trimming edge is used for being in contact with the outer wall surface of the inner hexagonal wrench, the inner hexagonal wrench transmits torque to the driving part, and the driving part transmits the torque to the threaded part so as to realize torque transmission.

Further, the notch is tangent to the cut edge at the junction.

Further, the notches are arranged at equal intervals.

Further, the cross section of the notch is U-shaped, circular arc-shaped, rectangular, V-shaped or trapezoidal.

Further, all of the notches in the driving portion have the same cross-sectional shape.

Further, the cross section of the protrusion on the interference part is U-shaped, circular arc-shaped, rectangular, V-shaped or trapezoidal.

Further, the protrusions on the interference part are arranged at equal intervals.

Further, conflict portion quantity n is 3, laminating portion quantity m is 3, conflict portion with laminating portion is in interval arrangement in the drive division.

Further, the accommodating space is arranged at the center of the end part of the fastener body.

Further, when the number n of the interference parts is greater than 1, the shapes of the interference parts are the same.

The utility model has the advantages that: the utility model has the advantages that by adding the collision part and the notch structure, when the inner hexagonal wrench is contacted with the fastener, six contact surfaces are still arranged between the fastener and the wrench, the stress is sufficient, the fastener is not easy to damage, and the advantages of the inner hexagonal fastener in the prior art are retained; meanwhile, the contact part is taken as an acting point, and a plurality of salient points are arranged on the contact part, so that the engagement and the abutting force of the contact surface of the inner hexagonal wrench are increased, and the occurrence of slipping is reduced; the notch is used for accommodating the convex angle of the inner hexagonal wrench, so that the hexagonal inner angle of the fastener is prevented from being worn; because the existing internal hexagonal wrench can be still accommodated, a special wrench is not needed to be correspondingly used, and the popularization range is wider.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural view of a first embodiment of the present invention;

FIG. 2 is a schematic view of the socket head wrench of FIG. 1;

FIG. 3 is a perspective cross-sectional view of FIG. 1;

fig. 4 is a schematic structural diagram of a second embodiment of the present invention;

FIG. 5 is a schematic view of the socket head wrench of FIG. 4;

FIG. 6 is a perspective cross-sectional view of FIG. 4;

fig. 7 is a schematic structural diagram of a third embodiment of the present invention;

FIG. 8 is a perspective cross-sectional view of FIG. 7;

FIG. 9 is a schematic structural diagram of a fourth embodiment of the present embodiment;

fig. 10 is a schematic structural view of a fifth embodiment of the present invention;

in the figure, 1, a thread part, 2, a driving part, 2-1, a cutting edge, 2-2, a notch, 2-3, an interference part, 2-4, a fitting part, 3 and an inner hexagonal wrench.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

The invention will be further explained below with reference to the drawings and examples.

As shown in fig. 1 to 10, a fastener for receiving an allen wrench comprises a fastener body including a threaded portion 1 and a driving portion 2,

the threaded portion 1 is provided outside the fastener body.

The driving part 2 is a concave accommodating space at the end part of the fastener body, specifically, the driving part 2 is arranged at the end part of the fastener body, and the driving part 2 is of a blind hole structure; the bottom of the drive part may preferably be a concave funnel-shaped platform, and the drive part 2 comprises:

the number of the cutting edges 2-1 is six, and the six cutting edges 2-1 are sequentially connected to form a closed ring to form the hexagonal accommodating space.

The notches 2-2 are arranged at the junctions of the adjacent cutting edges 2-1, namely, one notch 2-2 is formed at the junction of every two cutting edges 2-1, six notches 2-2 are formed in the six cutting edges 2-1 of the accommodating space, and the notches 2-2 are used for accommodating convex angles of the hexagon socket wrench 3. As a modification of the application, the notch 2-2 is tangent to the cut edge 2-1 at the junction, and the junction is in smooth transition. As a preference of the present application, the notches 2-2 are arranged at equal intervals in the accommodating space; as a preference of the present application, the cross-sectional shape of the notch 2-2 may be any one of a U-shape, a circular arc shape, a rectangular shape, a V-shape, or a trapezoidal shape. Meanwhile, all the recesses 2-2 in the driving part 2 have the same cross-sectional shape for the convenience of processing.

Conflict portion 2-3 sets up between adjacent notch 2-2, conflict portion contains a plurality of archs towards the accommodation space, conflict portion quantity is n, and n gets 1, 2, 3, 4, 5 or 6. As a preference of the present application, the cross-sectional shape of the protrusion on the interference part 2-3 may be any one of a U shape, a circular arc shape, a rectangular shape, a V shape, or a trapezoidal shape. Preferably, the protrusions on the interference parts 2-3 are arranged at equal intervals. When the number of the interference parts 2-3 arranged in the driving part 2 is larger than 1, the interference parts 2-3 are all in the same structure in appearance for convenience of processing.

The attaching parts 2-4 are arranged between the adjacent notches 2-2 and are complete planes, the number of the attaching parts is m, and m = 6-n; in the application, the number of the collision parts 2-3 and the number of the joint parts 2-4 can be six, and the number of the collision parts 2-3 is at least 1, namely, the number of the joint parts 2-4 can be 5 at most, and the number of the joint parts 2-4 can also be 1, and only the number of the collision parts 2-3 is set. The contact parts 2-3 or the contact parts 2-3 and the joint parts 2-4 correspond to the six cut edges 2-1 one by one.

The cut edge 2-1 is composed of the abutting part 2-3, or the abutting part 2-3 and the attaching part 2-4 (when the attaching part 2-4 exists in the driving part 2); the collision part 2-3 and the attaching part 2-4 (when the attaching part 2-4 exists in the driving part 2) are used for being in contact with the outer wall surface of the inner hexagonal wrench 3, so that torque transmission is realized.

Furthermore, the accommodating space is arranged at the center of the end part of the fastening piece body. Namely, the central point of the accommodating space is positioned on the axis or the axis extension line of the threaded part of the fastener. The product appearance is more beautiful on the whole, the eccentric center is formed, the punching needle of a production tool is easy to break, the most serious problem is the broken end and the like, and the problem can be reduced by the central arrangement.

The utility model discloses a first embodiment: as shown in fig. 1 to 3, 6 interference portions 2-3 are disposed in the driving portion 2, the interference portions 2-3 include a plurality of protrusions facing the accommodating space, the notches 2-2 are circular, and when the socket wrench 3 drives the fastener, the protrusions of the interference portions 2-3 serve as force application points of the socket wrench 3.

The utility model discloses a second embodiment: as shown in fig. 4 to 6, 3 of the interference portions 2-3, 3 of the attachment portions 2-4 are provided, the interference portions 2-3 and the attachment portions 2-4 are arranged in the driving portion at intervals, and the notches 2-2 are circular arc-shaped. When the inner hexagonal wrench 3 drives the fastener, the abutting part 2-3 and the attaching part 2-4 are used for contacting with the outer wall surface of the inner hexagonal wrench 3 so as to realize torque transmission. The increase symmetry is beautiful, and is whole pleasing to the eye, conflict portion symmetrical arrangement, and the atress is even.

The utility model discloses a third embodiment: as shown in fig. 7 and 8, as a modification of the third embodiment, the recess 2-2 is designed in a trapezoidal shape; the convex angle of the inner hexagonal wrench can be abutted and fixed on the notch, so that the mutual abrasion of the inner angles of the inner hexagonal wrench and the fastener is reduced, and a certain anti-skidding effect is generated due to the abutting and fixing.

The fourth embodiment of the present invention: as shown in fig. 9, there are 1 interference part 2-3 and 5 attachment parts 2-4.

The fifth embodiment of the present invention: as shown in fig. 10, the cross-sectional shape of the protrusion of the interference part 2-3 is V-shaped.

The fastener of the present application includes both headed and non-headed fasteners; the fastener comprises a driving part arranged at one end and a fastener body with driving parts arranged at two ends.

In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise; the inner hexagonal wrench finger is a general name for tools for screwing an inner hexagonal fastener, and the name of the tool comprises a hexagonal wrench, an Allen wrench, an inner hexagonal wrench and an inner hexagonal screwdriver.

The utility model has the advantages that by adding the collision part and the notch structure, when the inner hexagonal wrench is contacted with the fastener, six contact surfaces are still arranged between the fastener and the wrench, the stress is sufficient, the fastener is not easy to damage, and the advantages of the inner hexagonal fastener in the prior art are retained; meanwhile, the contact part is taken as an acting point, and a plurality of salient points are arranged on the contact part, so that the engagement and the abutting force of the contact surface of the inner hexagonal wrench are increased, and the occurrence of slipping is reduced; the notch is used for accommodating the convex angle of the inner hexagonal wrench, so that the hexagonal inner angle of the fastener is prevented from being worn; because the existing internal hexagonal wrench can be still accommodated, a special wrench is not needed to be correspondingly used, and the popularization range is wider.

The foregoing is directed to embodiments of the present application and it is noted that numerous modifications and adaptations may be made by those skilled in the art without departing from the principles of the present application and are intended to be within the scope of the present application.

Claims

1. A fastener for accommodating an internal hexagonal wrench is characterized in that: comprises a fastener body, the fastener body comprises a thread part and a driving part,

the thread part is arranged on the outer side of the fastener body;

the notch is arranged at the junction of the adjacent cutting edges;

the number of the interference parts is n, and n is 1, 2, 3, 4, 5 or 6;

2. A fastener for receiving a allen wrench as defined in claim 1, wherein: the notch is tangent to the cutting edge at the junction.

3. A fastener for receiving a allen wrench as defined in claim 1, wherein: the notches are arranged at equal intervals.

4. A fastener for receiving a allen wrench as defined in claim 1, wherein: the cross section of the notch is U-shaped, circular arc-shaped, rectangular, V-shaped or trapezoidal.

5. A fastener for receiving a allen wrench as defined in claim 1, wherein: all of the notches in the drive portion have the same cross-sectional shape.

6. A fastener for receiving a allen wrench as defined in claim 1, wherein: the cross section of the protrusion on the contact part is U-shaped, circular arc-shaped, rectangular, V-shaped or trapezoidal.

7. A fastener for receiving a allen wrench as defined in claim 1, wherein: the protrusions are arranged on the interference parts at equal intervals.

8. A fastener for receiving a allen wrench as defined in claim 1, wherein: conflict portion quantity n is 3, laminating portion quantity m is 3, conflict portion with laminating portion is in interval arrangement in the drive division.

9. A fastener for receiving a allen wrench as defined in claim 1, wherein: the accommodating space is arranged at the center of the end part of the fastening piece body.

10. A fastener for receiving a allen wrench as defined in claim 1, wherein: when the number n of the interference parts is greater than 1, the appearance of the interference parts is the same.