CN219101804U

CN219101804U - Screw with expansion function for building

Info

Publication number: CN219101804U
Application number: CN202222803360.8U
Authority: CN
Inventors: 陈家栋
Original assignee: Wuxi Ruibeite Fastening System Co ltd
Current assignee: Wuxi Ruibeite Fastening System Co ltd
Priority date: 2022-10-25
Filing date: 2022-10-25
Publication date: 2023-05-30
Anticipated expiration: 2032-10-25

Abstract

The embodiment of the application relates to the technical field of screws for buildings, and discloses a screw with an expansion function for buildings, wherein the screw comprises a screw rod, a screw cap, an expansion groove and a screw rod. The screw rod is connected with the nut, the screw rod has first external screw thread, and the nut has the shoulder hole, the shoulder hole runs through the nut with the screw rod. Through the screw that has expansion properties that this application embodiment provided for the building can be fixed object and building to reduced the injury to the building, the ladder downthehole first internal thread that has, the screw pole has the second external screw thread, and through second external screw thread and first internal screw thread with the screw rod is connected, the screw pole for the screw rod rotates, through setting up first internal screw thread and second external screw thread, so that produce the rotation between screw pole and the screw inner wall, compare in ordinary screw's single thread design, can carry out the adjustment of screw rod after outside first external screw thread is fixed, the convenience is consolidated at the later stage.

Description

Screw with expansion function for building

Technical Field

The embodiment of the application relates to the technical field of screws for buildings, in particular to a screw with an expansion function for a building.

Background

The screw is a tool for fastening the parts of the device step by utilizing the physical and mathematical principles of the inclined circular rotation and friction force of the object. Screws are a common way of speaking fasteners, daily spoken words. Screws are an indispensable industrial necessity in daily life: very small screws for use in cameras, spectacles, watches, electronics, etc.; general screws for televisions, electrical products, musical instruments, furniture, and the like; as for engineering, construction and bridge, large-scale screws and nuts are used; traffic tools, airplanes, electric cars, automobiles and the like are used together by the large screws and the small screws. Screws are an important task in industry, and as long as industry exists on earth, the function of the screw is always important. Screws are a common utility model in production and life of people for thousands of years, and are the first utility model of human beings according to the application field. The screw mainly connects two workpieces together to fasten.

When the large-scale screw used in the building fixes some parts and the building, because of the characteristic of cement concrete, the screw can be inserted only by driving the fixing piece into the interior of the building when the large-scale screw is connected, and because the size of the fixing piece is larger than the outer diameter of the screw, the damage to the wall body is extremely large, and the screw is used along with the use of the screw.

The existing screw not only needs to be installed in advance when in use, but also can enlarge a threaded hole arranged in a building when being rubbed against the building for a long time, and once the threaded hole is enlarged, the screw is fixed loose.

Disclosure of Invention

To the not enough of prior art, this application embodiment provides the screw that has expansion function for the building, possesses in the screw in building stability after, and can adjust the external diameter of screw thread afterbody, save material, dismantle advantages such as convenient after the use, solved the screw at the inside fixed unstable of building concrete, and can not stabilize the inside problem of screw.

(II) technical scheme

For realizing above-mentioned screw in building in after stability good, and can adjust the external diameter of screw thread afterbody, save material, dismantle convenient purpose after the use, this application embodiment provides following technical scheme: the screw with the expansion function for the building comprises a screw rod, a screw cap, an expansion groove and a screw rod;

the screw rod is connected with the screw cap, the screw rod is provided with a first external thread, the screw cap is provided with a stepped hole, and the stepped hole penetrates through the screw cap and the screw rod.

The screw with expansion performance for the building can fix objects and the building, and compared with the fixing mode of the common pre-installation fixing piece, the mode provided by the embodiment of the application can reduce the installation holes formed in the building, thereby reducing the damage to the building,

in one possible implementation, the stepped bore has a first internal thread, the screw shank has a second external thread, and is connected to the threaded rod by the second external thread and the first internal thread, the screw shank rotating relative to the threaded rod.

Through setting up first internal thread and second external screw thread to produce and rotate between messenger's screw rod and the screw rod inner wall, compare in ordinary screw's single thread design, can carry out the adjustment of screw rod after outside first external screw thread is fixed, conveniently consolidate at the later stage.

In one possible implementation, the screw shank is connected with a screw cap and a tapered shaft, the tapered shaft having an outer diameter dimension slightly smaller than an inner diameter dimension of the stepped shaft trapezoidal bore, and the tapered shaft being rotatable relative to the screw.

The screw rod can be expanded by the aid of the conical shaft under the pushing of the screw rod, a threaded hole formed in a building is enlarged for a long time relative to a common screw, screw fixation is loosened, the size of the tail of the screw rod can be adjusted by means of the conical shaft, and accordingly tightness of the screw and the building is always kept.

In one possible implementation, the expansion slots extend transversely through the screw, and the screw may be expanded under the urging of the tapered shaft.

The screw can be expanded by arranging the expansion groove without damaging threads on the outer wall of the screw, so that the force used by the conical shaft for expanding the screw can be reduced, the screw can be used for a second time, and the waste of the screw is avoided.

In one possible implementation, the screw cap has a cross-shaped recess, and the screw cap may be rotated by a cross-shaped screwdriver.

The cross groove is arranged, so that an operator can conveniently adjust the inner screw rod, and the cross groove plays a role in conveniently rotating the screw rod because the screw cap is arranged in the trapezoid groove and is difficult to rotate under the condition that the cross groove is not formed.

In one possible implementation, the cross slot is located at a central location of the nut.

The screw rod can be accurately rotated through the design that the cross groove is positioned in the center, and damage to the threads driven by the offset of the force application point of an operator can be avoided.

In one possible implementation, the screw has a washer outside, and the washer may create friction between the nut and the building.

The damage to the building by the screw cap can be reduced by arranging the screw cap, and the damage to the building is smaller than the screw cap because the contact area of the gasket and the building is smaller than the contact area of the screw cap and the building, and the object and the building can be conveniently fixed because of the elasticity of the gasket.

Compared with the prior art, the embodiment of the application provides a screw with expansion function for building, possesses following beneficial effect:

1. according to the screw nut, the screw nut is arranged outside the screw nut, materials for producing the screw nut can be saved, the screw nut is attractive compared with a common six-foot screw nut, attractive influence caused by the hexagonal screw nut is avoided during use and installation, the screw nut can be conveniently expanded through the arrangement of the expansion groove, the structural strength of the screw nut cannot be influenced, the inclination angle of one side of the screw nut, which is close to the screw nut, is larger than the inclination angle of one side, which is far away from the screw thread, of the screw thread, and the external pulling capacity of the screw thread is remarkably improved after the screw thread is screwed in.

2. According to the screw cap, the screw driver can conveniently work through the screw cap arranged inside the screw, the screw cap can be rotated to be converted into the movement of the screw rod by utilizing the first internal thread and the second external thread inside the screw rod, so that the conical shaft is pushed to move, one side of the screw rod provided with the expansion groove is expanded at any time, and the combination tightness of the screw and a building is ensured.

Drawings

FIG. 1 is a main structure diagram of a screw with expansion function for construction according to an embodiment of the present application;

FIG. 2 is a cross-sectional view of a screw rod structure with expansion function for construction according to an embodiment of the present application;

FIG. 3 is a block diagram of a screw rod with expansion function for construction according to an embodiment of the present application;

FIG. 4 is a structural view of a screw rod with expansion function for construction according to an embodiment of the present application;

FIG. 5 is a block diagram of a screw expansion slot with expansion function for construction according to an embodiment of the present application;

fig. 6 is a position structure diagram of a screw washer with expansion function for construction according to the embodiment of the present application.

Wherein: 1 screw rod, 2 nuts, 3 first external screw threads, 4 expansion grooves, 5 stepped holes, 6 screw caps, 7 screw rods, 8 conical shafts, 9 cross grooves, 10 first internal screw threads, 11 second external screw threads and 12 washers.

Detailed Description

The following description of the technical solutions in the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, but not all embodiments.

Examples of the embodiments are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements throughout or elements having like or similar functionality. The embodiments described below by referring to the drawings are exemplary and intended for the purpose of illustrating the embodiments of the present application and are not to be construed as limiting the embodiments of the present application.

In the description of the embodiments of the present application, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," etc. indicate or are based on the orientation or positional relationship shown in the drawings, merely for convenience of describing the embodiments of the present application and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore should not be construed as limiting the embodiments of the present application.

In the embodiments of the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present application will be understood by those of ordinary skill in the art according to the specific circumstances.

As shown in fig. 1-2, the embodiment of the present application provides a technical solution: the screw for building has expansion function, and the screw includes screw rod 1, nut 2, expansion groove 4 and screw rod 7, and screw rod 1 is connected with nut 2, and screw rod 1 has first external screw thread 3, and nut 2 has shoulder hole 5, and shoulder hole 5 runs through nut 2 and screw rod 1.

in one possible implementation, as shown in fig. 3-4, the stepped bore 5 has a first internal thread 10 therein, the screw shank 7 has a second external thread 11, and the screw shank 7 is connected to the screw 1 by the second external thread 11 and the first internal thread 10, and rotates relative to the screw 1.

Through setting up first internal thread 10 and second external screw thread 11 to make produce the rotation between screw pole 7 and the screw rod 1 inner wall, compare in ordinary screw's single thread design, can carry out the adjustment of screw rod 1 after outside first external screw thread 3 is fixed, the convenience is consolidated at the later stage.

In particular, as shown in fig. 3-4, in one possible implementation, the screw shank 7 is connected with a screw cap 6 and a tapered shaft 8, the tapered shaft 8 having an outer diameter dimension slightly smaller than the inner diameter dimension of the stepped shaft trapezoidal bore, and the tapered shaft 8 being rotatable relative to the screw 1.

The screw rod 1 can be expanded by the aid of the conical shaft 8 under the pushing of the screw rod 7, a threaded hole formed in a building is enlarged for a long time relative to a common screw, screw fixation is loosened, the size of the tail of the screw rod 1 can be adjusted by means of the conical shaft 8, and accordingly tightness of the screw and the building is always kept.

In one possible implementation, as shown in fig. 5, expansion slots 4 extend transversely through screw 1, and screw 1 may be expanded under the urging of tapered shaft 8.

The screw thread on the outer wall of the screw 1 can not be damaged when the bolt is expanded by arranging the expansion groove 4, the force used by the conical shaft 8 for expanding the screw 1 can be reduced, the screw can be used for a second time, and the waste of the screw is avoided.

In one possible implementation, as shown in fig. 6, the screw 1 has a washer 12 outside, and the washer 12 can create friction between the nut 2 and the building.

The damage to the building caused by the nut 2 can be reduced by arranging the nut 2, and the damage to the building is smaller than the nut 2 because the contact area between the washer 12 and the building is smaller than the contact area between the nut 2 and the building, and the washer 12 can be convenient for fixing the object and the building because of the elasticity.

In addition, this application embodiment still provides the use method of screw that has expansion function for building, when using the screw, will need the fixed position at first to beat the screw hole, screw thread threaded hole through the spanner, packing ring 12 and building contact, guarantee the combination of screw closely, first screw thread and building contact, because the contained angle of first screw thread near nut 2 one side and screw rod 1 is greater than the one side that keeps away from nut 2, so the threaded rod is difficult to be pulled out under the effect of external force, use screwdriver rotation inside screw cap 6, inside screw cap 6 drives screw pole 7 rotation, screw pole 7 inwards rotates, conical shaft 8 expands screw rod 1 along with the removal of threaded rod, screw rod 1 internal opening makes the contact of screw and building screw hole inseparabler, dismantle the need first with screw cap 6 rotation, withdraw conical shaft 8, the expansion of screw rod 1 is lost the support, the screw is unloaded to the reuse spanner.

Although embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the embodiments of the application, the scope of which is defined in the appended claims and their equivalents.

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other.

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. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the present application. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the application, its application, or uses. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

Claims

1. Screw for building that has expansion function, its characterized in that: the screw comprises a screw rod (1), a screw cap (2), an expansion groove (4) and a screw rod (7);

the screw rod (1) with nut (2) are connected, screw rod (1) have first external screw thread (3), nut (2) have shoulder hole (5), shoulder hole (5) run through nut (2) with screw rod (1).

2. The screw with expansion function for construction according to claim 1, wherein: the stepped hole (5) is internally provided with a first internal thread (10), the screw rod (7) is provided with a second external thread (11) and is connected with the screw rod (1) through the second external thread (11) and the first internal thread (10), and the screw rod (7) rotates relative to the screw rod (1).

3. The screw with expansion function for construction according to claim 2, wherein: the screw rod (7) is connected with a screw cap (6) and a conical shaft (8), the outer diameter size of the conical shaft (8) is slightly smaller than the inner diameter size of the stepped hole (5), and the conical shaft (8) can rotate relative to the screw rod (1).

4. A screw for construction having an expansion function according to claim 3, wherein: the expansion groove (4) transversely penetrates through the screw rod (1), and the screw rod (1) can be expanded under the pushing of the conical shaft (8).

5. A screw for construction having an expansion function according to claim 3, wherein: the screw cap (6) is provided with a cross groove (9), and the cross screw driver can be utilized to drive the screw cap (6) to rotate.

6. The screw with expansion function for construction according to claim 5, wherein: the cross groove (9) is positioned at the center of the screw cap (6).

7. The screw with expansion function for construction according to claim 1, wherein: the screw (1) is provided with a washer (12) outside, and the washer (12) can generate friction between the screw cap (2) and a building.