CN220204318U - Combined screw - Google Patents

Abstract

The utility model discloses a combined screw in the technical field of screws, which comprises a threaded column, clamping blocks and a guide column, wherein a screw cap is welded at the top of the threaded column, a screw hole and a mounting hole are formed in the threaded column, the screw hole and the mounting hole are vertically distributed, the two clamping blocks are positioned in the mounting hole and are in contact with each other, and a threaded groove formed in the end part of each clamping block corresponds to a threaded groove formed in the outer side wall of the threaded column; this set up of combination screw, structural design is reasonable, through internally mounted at the screw thread post has guide post and fixture block, after screw thread post carries out threaded connection with external part, the rotatory guide post of rethread hexagonal wrench for two fixture blocks of bottom downwardly moving and extrusion of guide post, make the fixture block follow the inside of screw thread post shift out and block in the bottom of part, after the screw thread post is passed in the vibrations that the part produced, thereby can effectually prevent that screw thread post from taking place the rotation and make the junction of part take place not hard up.

Description

Combined screw

Technical Field

The utility model relates to the technical field of screws, in particular to a combined screw.

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.

The existing screw is used for connecting and fixing two parts, and when vibration of the parts is transmitted to the screw for a long time, the screw can rotate, so that loose installation stability is caused at the joint of the two parts. For this reason, new solutions need to be designed to solve.

Disclosure of Invention

The utility model aims to provide a combined screw, which is used for solving the problem that when the screw is used, two parts are connected and fixed, and when vibration of the parts is transmitted to the screw for a long time, the screw can rotate, so that the connection part of the two parts is loosened, and the installation stability is guaranteed.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a combination screw, includes screw thread post, fixture block and guide post, the top welding of screw thread post has the nut, screw and mounting hole are opened to the inside of screw thread post, the screw with the mounting hole distributes perpendicularly, two the fixture block is located in the mounting hole to two fixture blocks contact each other, open the tip of fixture block have the screw thread groove with the screw thread groove of screw thread post lateral wall is corresponding, the lateral wall of guide post is opened there is the screw thread groove, the guide post with screw threaded connection, the bottom of guide post is located two the centre department of fixture block.

In order to prevent the clamping block from falling from the mounting hole, as one combination screw of the utility model, preferably, a protruding block is welded at the upper part of the clamping block, and the protruding block is in sliding contact with the inner side wall of the mounting hole.

For the convenience of using the hexagonal column for rotation, as a preferable combination screw of the utility model, the top of the guide column is provided with a clamping hole, and the clamping hole is hexagonal.

In order to block the protruding block, preferably, as a combined screw of the utility model, the outer part of the threaded column is sleeved with two clamping rings, the two clamping rings are mutually spliced to form an annular structure, the outer part of the threaded column is sleeved with the annular structure, and the bottom of the clamping ring is contacted with the top of the clamping block.

In order to effectively extrude the clamping blocks to lead out the two clamping blocks from the mounting holes, the combined screw is preferably provided with a wedge-shaped surface at the contact position of the two clamping blocks, the bottom end of the guide post is a conical end, and the bottom end of the guide post is in contact with the wedge-shaped surface of the clamping blocks.

In order to prevent rainwater from entering the screw hole and making the guide post rust in the screw hole, the combined screw is preferably provided with a plug inserted into the top of the inner cavity of the screw hole, and the plug is contacted with the inner wall of the screw hole.

In order to match with the screw hole in the external part, the combined screw is preferably provided with a thread groove formed in the outer side wall of the clamping ring and corresponding to the thread groove of the outer wall of the thread column.

Compared with the prior art, the utility model has the beneficial effects that: this set up of combination screw, structural design is reasonable, through internally mounted at the screw thread post has guide post and fixture block, after screw thread post carries out threaded connection with external part, the rotatory guide post of rethread hexagonal wrench for two fixture blocks of bottom downwardly moving and extrusion of guide post, make the fixture block follow the inside of screw thread post shift out and block in the bottom of part, after the screw thread post is passed in the vibrations that the part produced, thereby can effectually prevent that screw thread post from taking place the rotation and make the junction of part take place not hard up.

Drawings

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a schematic cross-sectional view of the present utility model;

FIG. 3 is a schematic top view of the present utility model;

fig. 4 is a schematic diagram of a snap ring structure according to the present utility model.

In the figure: 1. a threaded column; 2. a screw cap; 3. a screw hole; 4. a clamping block; 5. a clasp; 6. a guide post; 7. a bump; 8. a clamping hole; 9. a mounting hole; 10. a plug.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-4, the present utility model provides a technical solution: comprises a threaded column 1, a clamping block 4 and a guide column 6.

In the technical scheme, the combined screw comprises a threaded column 1, clamping blocks 4 and a guide column 6, wherein a screw cap 2 is welded at the top of the threaded column 1, a screw hole 3 and a mounting hole 9 are formed in the threaded column 1, the screw hole 3 and the mounting hole 9 are vertically distributed, two clamping blocks 4 are positioned in the mounting hole 9, the two clamping blocks 4 are in mutual contact, a threaded groove formed in the end part of each clamping block 4 corresponds to a threaded groove formed in the outer side wall of the threaded column 1, a threaded groove is formed in the outer side wall of the guide column 6, the guide column 6 is in threaded connection with the screw hole 3, and the bottom end of the guide column 6 is positioned in the middle of the two clamping blocks 4;

in this kind of technical scheme, screw thread post 1 and nut 2 mutually support and use can be connected with external part to with the locking that two parts are tight, guide post 6 is used for outwards deriving two fixture blocks 4, makes the part contact that exposes, and then can avoid screw thread post 1 to take place the gyration and avoid two part connection to take place not hard up.

In some technical solutions, referring to fig. 2, a bump 7 is welded on the upper portion of the clamping block 4, and the bump 7 is in sliding contact with the inner sidewall of the mounting hole 9.

In this solution, the use of the projection 7 enables the latch 4 to move horizontally along the mounting hole 9 and prevents the latch 4 from falling out of the mounting hole 9.

In some technical schemes, referring to fig. 2-3, a clamping hole 8 is formed in the top of the guide post 6, and the clamping hole 8 is hexagonal.

In this kind of technical scheme, the use of card hole 8 can be convenient make external hexagonal post dock and rotate guide post 6.

In some technical schemes, referring to fig. 1, 2 and 4, two clamping rings 5 are sleeved on the outer portion of the threaded column 1, the two clamping rings 5 are mutually spliced to form an annular structure, the annular structure is sleeved on the outer portion of the threaded column 1, and the bottoms of the clamping rings 5 are in contact with the top of the clamping block 4.

In this technical solution, the outer wall of the snap ring 5 is connected with the thread groove of the thread post 1, and the snap ring 5 is located in the threaded hole of the part, and the use of the snap ring 5 can conveniently place the clamping block 4 in the mounting hole 9.

In some technical solutions, referring to fig. 2, a wedge surface is formed at the contact position of two clamping blocks 4, the bottom end of the guiding column 6 is a conical end, and the bottom end of the guiding column 6 contacts with the wedge surface of the clamping block 4.

In this technical scheme, utilize the wedge face can be convenient extrude fixture block 4 for two fixture blocks 4 change the separation state from contact state.

In some technical solutions, referring to fig. 2, a plug 10 is inserted into the top of the inner cavity of the screw hole 3, and the plug 10 contacts with the inner wall of the screw hole 3.

In the technical scheme, 10 pairs of through holes of the 3 are used for sealing, so that rust caused by rainwater entering the 3 is avoided.

In some technical schemes, referring to fig. 1-2, a thread groove formed on the outer side wall of the snap ring 5 corresponds to the thread groove on the outer wall of the threaded column 1

In this kind of technical scheme for screw thread post 1 when using with external part, can be convenient with external part's screw matching.

Working principle: a wrench (not shown in the drawing) is used for clamping the outside of the nut 2, the wrench is rotated to drive the threaded column 1 to rotate, the threaded column 1 is screwed into the threaded holes corresponding to the two parts until the threaded column is screwed, at the moment, the hexagonal column is inserted into the clamping holes 8, the hexagonal column is rotated, the guide column 6 is enabled to rotate downwards in the threaded column 1, the end portions of the guide column 6 are enabled to squeeze the two clamping blocks 4, the two clamping blocks 4 are led out from the inside of the threaded column 1 respectively, the exposed portions of the clamping blocks are contacted with the outer walls of the parts, locking of the threaded column 1 is completed, and the phenomenon that the threaded column 1 is self-rotated and loosened to influence the connection strength between the two parts is avoided.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although the utility model has been described hereinabove with reference to embodiments, various modifications thereof may be made and equivalents may be substituted for elements thereof without departing from the scope of the utility model. In particular, the features of the disclosed embodiments may be combined with each other in any manner so long as there is no structural conflict, and the exhaustive description of these combinations is not given in this specification merely for the sake of brevity and resource saving. Therefore, it is intended that the utility model not be limited to the particular embodiment disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.

Claims (7)

1. A combination screw, characterized in that: including screw thread post (1), fixture block (4) and guide post (6), screw cap (2) have been welded at the top of screw thread post (1), open the inside of screw thread post (1) has screw (3) and mounting hole (9), screw (3) with mounting hole (9) perpendicular distribution, two fixture block (4) are located in mounting hole (9) to two fixture block (4) contact each other, the tip of fixture block (4) open the screw thread groove of having with screw thread post (1) lateral wall corresponds, the lateral wall of guide post (6) is opened there is the screw thread groove, guide post (6) with screw (3) threaded connection, the bottom of guide post (6) is located two the centre department of fixture block (4).

2. A combination screw as defined in claim 1, wherein: the upper part of the clamping block (4) is welded with a lug (7), and the lug (7) is in sliding contact with the inner side wall of the mounting hole (9).

3. A combination screw as defined in claim 1, wherein: the top of the guide post (6) is provided with a clamping hole (8), and the clamping hole (8) is hexagonal.

4. A combination screw as defined in claim 1, wherein: the outside of screw thread post (1) has cup jointed two snap rings (5), two snap rings (5) are pegged graft each other and are constituteed annular structure cover in the outside of screw thread post (1), the bottom of snap ring (5) with the top contact of fixture block (4).

5. A combination screw as defined in claim 1, wherein: the contact part of the two clamping blocks (4) is provided with a wedge-shaped surface, the bottom end of the guide column (6) is a conical end, and the bottom end of the guide column (6) is in contact with the wedge-shaped surface of the clamping blocks (4).

6. A combination screw as defined in claim 1, wherein: the top of the inner cavity of the screw hole (3) is inserted with a plug (10), and the plug (10) is in contact with the inner wall of the screw hole (3).

7. A combination screw as defined in claim 4, wherein: the outer side wall of the clamping ring (5) is provided with a thread groove corresponding to the thread groove of the outer wall of the thread column (1).