CN215201710U - Tightening and cutting screwdriver head assembly for taking out screw - Google Patents

Abstract

The utility model provides a screwdriver head component for taking out the expansion and incision of a screw, which comprises a screwdriver head and a conical column-shaped expansion plug; one end of the screwdriver head is an insertion end which is inserted into an inner groove body at the top of the screw head; the insertion end comprises an insertion hole arranged inside the insertion end and a plurality of separators which surround the outside of the insertion hole and are arranged at intervals, and the inner surfaces of the separators form the inner wall surface of the insertion hole; the shape of the jack is matched with that of the expansion plug; when the stress end of the screwdriver head is applied with an external force pointing to the insertion end, the bottom surface of the expansion plug is abutted against the top surface of the inner groove body, and the insertion hole is expanded by the inserted expansion plug. The jack is expanded, so that the partition body is in close contact with the inner groove body of the screw head, the cutting edge cuts into the inner wall of the screw head, and the technical effect of more tight connection between the screwdriver head and the screw head is achieved. Aiming at the limit of static electricity prevention, magnetism prevention, redundancy prevention and the like on the environment when the aerospace product is assembled, the tensioning screwdriver head assembly without an electric tool is adopted, and metal chipping is avoided.

Description

Tightening and cutting screwdriver head assembly for taking out screw

Technical Field

The utility model relates to a titanium alloy screw field of space flight usefulness especially relates to a tight batch head subassembly that rises that is arranged in taking out screw in the counter bore.

Background

Titanium alloy screws, i.e., screws, are often used in the aerospace field, and the screws are divided into two parts, namely a threaded screw rod and a threaded screw head. The screw head of titanium alloy screw or the top of screw head are opened there is interior cell body, mostly are the interior cell body of a word, cross or hexagon, and this interior cell body is used for pegging graft mutually with hardware and hardware tools such as electric screwdriver's tool bit to fasten or dismantle the operation. However, the inner groove body of the screw head often has a slipping phenomenon because the hardness of the titanium alloy screw head is not enough, if the screw head leaks out of the plane, the excircle of the screw head can be clamped by a large-force clamp to loosen, but the screw head is difficult to take out if the screw head is screwed into the counter bore.

The hardware tools commonly used in the prior art usually need electric drills for auxiliary work, and a large amount of metal chippings are generated. And the aerospace product needs to be antistatic, antimagnetic, incapable of having various limitations such as redundancy and the like during assembly. The existing tools are difficult to adapt to the requirements of aviation and aerospace products.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve above-mentioned problem, provided one kind and used for taking out the screw tight and the batch head subassembly that cuts in that rises who does not use electric tool, does not produce metal debris. In order to achieve the above purpose, the utility model adopts the following specific technical scheme:

a tensioning and cutting bit assembly for removing a screw, comprising: the screw head is inserted and connected with a screw driver, and the screw driver is provided with a screw driver head and a screw driver head;

one end of the screwdriver head is set to be a stress end, the other end of the screwdriver head is set to be an insertion end, and the insertion end is inserted into the inner groove body;

the insertion end includes a receptacle and a plurality of spacers; the jack is arranged in the insertion end, and the shape of the jack is matched with that of the expansion plug; a plurality of the spacers are arranged around the insertion hole, two adjacent spacers are arranged at intervals, and the inner surfaces of the spacers form the inner wall surface of the insertion hole;

a cutting edge arranged along the length direction of the batch head is arranged outside the separating body;

when the stress end is applied with an external force pointing to the insertion end, the bottom surface of the expansion plug is abutted against the inner groove body, the insertion hole is expanded by the inserted expansion plug, and the cutting edge cuts into the inner groove body.

Furthermore, a plurality of open grooves are formed between the outer surface of the bit and the inner wall surface of the insertion hole, and the open grooves enable the adjacent separating bodies to be arranged at intervals; the edge formed by cutting the outer surface of the batch head by the open slot is set as the cutting edge.

Further, the screw head is a hexagon socket head, the structure of the inner groove body corresponds to a hexagon socket, and the structure of the screwdriver head corresponds to a regular hexagonal prism.

Furthermore, the open grooves are uniformly distributed in the circumferential direction of the jacks.

Furthermore, the number of the open grooves is six, and the open grooves are correspondingly arranged on six lateral edges of the batch head respectively.

The utility model discloses can gain following technological effect:

the utility model provides a pair of a criticize first subassembly that rises and cut for taking out screw is expanded through the jack, makes the interior cell body contact of separating body and screw head, produces and criticizes the blade that connects inseparabler and form between head and the screw head and cut into the internal face's of cell body in the pin fin inner wall promptly technical effect. Aiming at the limit of static electricity prevention, magnetism prevention, redundancy prevention and the like on the environment when the aerospace product is assembled, a tensioning screwdriver head assembly without an electric tool is adopted, and the screw with the screw head slipping can be taken out without metal chipping, so that the aerospace product is suitable for the working environment of aerospace;

the internal groove body at the top of screw head is different with the laminating degree of criticizing the head, or takes out the required power of using of screw head and is different, and this rises and criticizes first subassembly and has the flexibility, and the difference according to the condition of using can control the expansion plug and insert the length in criticizing the head also just different.

Drawings

Fig. 1 is a schematic structural diagram of a batch head assembly disclosed by the present invention;

fig. 2 is a schematic view of a three-dimensional structure of a batch head disclosed in the present invention.

Reference numerals:

1. a batch head; 11. a jack; 12. a separator; 13. an open slot; 14. cutting edges; 2. an expansion plug; 3. an inner groove body.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not constitute limitations on the invention.

The utility model aims at providing a need not electric tool, not produce the bits of metal piece one kind and be used for taking out the screw rise tightly and the batch head subassembly that cuts in. The following will explain the tightening and cutting bit assembly for taking out the screw according to the present invention in detail through specific embodiments.

Fig. 1 shows the main structure of the batch head assembly of the present invention, as shown in fig. 1, including: the screwdriver head 1 and the expansion plug 2 are inserted, and the expansion plug 2 is in a conical column shape.

Fig. 2 shows the main structure of the batch head 1 of the present invention, as shown in fig. 2, wherein the batch head 1 is a cylinder with an opening. The bit 1 has two ends, one end is an insertion end and the other end is a stress end. The inserting end comprises an inserting hole 11 arranged in the inserting end, the inserting hole 11 is in a taper hole shape, the shape of the inserting hole 11 is matched with that of the expansion plug 2, and the inserting end is conveniently and closely attached to the outer surface of the expansion plug 2.

The insertion end of the batch head 1 further comprises a plurality of division bodies 12 surrounding the outside of the insertion hole 11, two adjacent division bodies 12 are arranged at intervals, the inner surfaces of the division bodies 12 form the inner wall surface of the insertion hole 11, and the number of the division bodies 12 is at least 2. The partition body 12 is provided with a cutting edge 14 arranged along the length direction of the batch head 1, and the cutting edge 14 is arranged on the outer surface of the partition body 12 and can be cut into the inner groove body. Edges may be provided on the partition body 12 as cutting edges 14.

The expansion plug 2 is integrally in a shape of a cone frustum or a cone column and is arranged between the internal groove body 3 at the top of the screw head and the screwdriver head 1 in the vertical direction. In the radial direction, the expansion plug 2 is sleeved in the screwdriver head 1, and the screwdriver head 1 is sleeved in the inner groove body 3 of the screw to be taken out. Initially, the expansion plug 2 is inserted into the insertion hole 11 and leaks out a part to be exposed out of the bit 1, and a gap is left between the insertion hole 11 and the expansion plug 2 for further changing the position of the expansion plug 2. When the screwdriver head 1 is inserted into the expansion plug 2, the inner wall surface of the insertion hole 11 is a circle of conical hole surface matched with the expansion plug 2 in shape. The diameter of the insertion hole 11 is larger closer to the screw head, and the diameter of the corresponding expansion plug 2 is larger closer to the screw head. Therefore, the insertion hole 11 and the expansion plug 2 are tightly matched in a conical surface mode, the longer the insertion depth is, the larger the contact area between the insertion hole 11 and the expansion plug 2 is, and the bit 1 and the expansion plug 2 are fastened by the conical surface.

When the screwdriver bit is used, the force bearing end of the screwdriver bit 1 is applied with external force pointing to the insertion end, and force is applied to the end face of the force bearing end. The bottom surface of the expansion plug 2 is abutted against the top surface of the inner groove body 3, the expansion plug 2 can continuously move forward along the inner wall surface of the insertion hole 11, the contact surface between the expansion plug 2 and the insertion hole is enlarged, and the automatic locking of the batch head 1 and the expansion plug 2 is completed. Meanwhile, the insertion hole 11 is expanded, so that the separating body 12 can move to the radial outer side of the insertion hole 11, the radial size of the bit 1 is increased, and the rotation between the bit 1 and the inner groove body 3 is effectively prevented. The spacer 12 protruding from the bit 1 acts like a support, strongly preventing the bit 1 from turning with the screw screwed in; in addition, a plurality of division bodies 12 are placed in the gap between the batch head 1 and the inner tank 3. If the gap is not uniform, the partition body 12 has a certain flexibility because only one end of the partition body 12 is connected with the bit 1 and is spaced from each other. The screwdriver head can deform between gaps, adapts to the initial gap, and further increases the attaching degree of the screwdriver head 1 and the inner groove body 3; in addition, the cutting edge 14 is also expanded by the bit 1, and the position of the cutting edge 14 in the radial direction of the bit 1 is moved outward to contact the inner groove. Particularly, the screw material of the titanium alloy material is softer than that of the screwdriver bit 1, and the cutting edge 14 is more easily cut into the inner groove body, so that the screwdriver bit 1 and the screw are fixed into a whole; finally, the bit 1 is designed with the cutting edge 14, compared with the traditional bit, the bit 1 can be fastened with the screw without completely entering the inner groove body, and the bit is particularly convenient for the slippage of the top of the screw head and the abrasion damage in the inner groove body.

More specifically, the partition body 12 is formed by providing an open groove 13 on the outer surface of the batch head 1. The open groove 13 communicates the insertion hole 11 with the outer surface of the insertion end to divide a plurality of division bodies 12. It is easy to imagine that the number of open slots 13 varies with the number of separating bodies 12. And the open slots 11 are uniformly arranged along the circumferential direction of the jack 11, so that the shapes of the plurality of separating bodies 12 are consistent, and the screwdriver head 1 and the expansion plug 2 are more smoothly assembled together. The open slot cuts the outer surface of the complete batch head 1, and the cut edge, namely the cutting edge 14, is easily realized.

In a preferred embodiment of the present invention, the screw head is a hexagon socket head, and the structure of the inner groove 3 corresponds to a hexagon socket, and the shape of the screwdriver head 1 also corresponds to a regular hexagonal prism. When the titanium alloy screw is sunk into the counter bore, the head of the internal hexagonal screw is threaded and the common hexagonal wrench cannot be disassembled. The screwdriver head assembly is placed in the inner groove body 3 in the screw head, the top of the screwdriver head 1 is knocked to enable the bottom of one end with a large diameter of the expansion plug 2 to touch the bottom, the insertion end of the screwdriver head 1 is expanded and tightly attached to the inner groove body 3, meanwhile, the partition body 2 formed by the open slot 13 is formed, the edge of the partition body 2 located on the outer surface of the screwdriver head 1 forms a cutting edge 14 which is axially arranged along the screwdriver head 1, the cutting edge 14 can be cut into the inner wall of the inner groove body 3, the fastening force is increased, and the screwdriver head 1 can be taken out by screwing the wrench in the screwing-out direction.

More specifically, six open grooves 13 are correspondingly formed on the side edges of the batch head 1. The side edges of the batch head 1 with the regular hexagonal prism structure are easy to identify, and the processing and positioning of the opening groove 13 are easier to realize by utilizing the existing side edges. And the side edges contact the inner groove body 3 earlier than the side surfaces, so that the opening grooves 13 are formed in the side edges, and the rotation stopping between the screwdriver bit 1 and the inner groove body 3 is realized quickly.

In a preferred embodiment of the present invention, the open grooves 13 are uniformly distributed in the circumferential direction of the insertion hole 11. The open slot 11 points to the center of the jack 11. The batch head 1 is convenient to process, the appearance is neat, and the symmetrical structure enables the batch head 1 to be even in stress and not easy to damage.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

The above detailed description of the present invention does not limit the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the protection scope of the claims of the present invention.

Claims (5)

1. A tensioning and cutting bit assembly for removing screws, comprising: the screw driver comprises a screw driver head (1) and a conical columnar expansion plug (2) which are inserted, wherein the expansion plug (2) is arranged between an inner groove body (3) at the top of a screw head of a screw to be taken out and the screw driver head (1);

one end of the screwdriver head (1) is set as a stress end, the other end of the screwdriver head (1) is set as an insertion end, and the insertion end is inserted into the inner groove body (3);

the insertion end comprises a receptacle (11) and a plurality of spacers (12); the insertion hole (11) is arranged inside the insertion end, and the shape of the insertion hole (11) is matched with that of the expansion plug (2); a plurality of the division bodies (12) are arranged around the insertion hole (11), two adjacent division bodies (12) are arranged at intervals, and the inner surfaces of the division bodies (12) form the inner wall surface of the insertion hole (11);

a cutting edge (14) arranged along the length direction of the batch head (1) is arranged outside the separating body (12);

when the stress end is applied with an external force pointing to the insertion end, the bottom surface of the expansion plug (2) is abutted to the inner groove body (3), the insertion hole (11) is expanded by the inserted expansion plug (2), and the cutting edge (14) cuts into the inner groove body (3).

2. The tightening and cutting bit assembly for taking out screws as claimed in claim 1, wherein a plurality of open grooves (13) are provided between the outer surface of the bit (1) and the inner wall surface of the insertion hole (11), the open grooves (13) enabling the adjacent division bodies (12) to be arranged at intervals; the edge formed by cutting the outer surface of the batch head (1) by the open slot (13) is set as the cutting edge (14).

3. The tightening and cutting bit assembly for taking out screws as claimed in claim 2, wherein the screw head is a hexagon socket head, the structure of the socket body (3) corresponds to a hexagon socket hole, and the bit (1) corresponds to a regular hexagonal prism.

4. Tensioning and cutting bit assembly for extracting screws according to claim 2 or 3, characterized in that the open grooves (13) are uniformly distributed in the circumferential direction of the insertion hole (11).

5. Tensioning and cutting bit assembly for screw extraction according to claim 3, characterized in that the number of the open slots (13) is six, and six open slots (13) are respectively provided on six lateral edges of the bit (1).

Images