CN114151429A

CN114151429A - Fixing piece

Info

Publication number: CN114151429A
Application number: CN202111312950.4A
Authority: CN
Inventors: 卢伟阅
Original assignee: Individual
Current assignee: Shenzhen Da Pin Te Pin Technology Co ltd
Priority date: 2021-11-08
Filing date: 2021-11-08
Publication date: 2022-03-08
Also published as: WO2023078390A1

Abstract

The invention discloses a fixing piece, which comprises at least two mutually exclusive expansion blocks, wherein the peripheral surface of an expansion part is provided with an abutting structure which is abutted against the hole walls of superposed mounting holes of two parts to be mounted, and a pre-positioning structure is realized through the mutual repulsion force; the inner edge of the prepositioning structure is provided with an embedded block. The expansion block is positioned at the periphery and is of a split structure, the embedded block is arranged at the inner edge of the expansion block, the expansion block is abutted against a hole position to be installed through repulsive force among the expansion blocks, the fixing effect similar to that of an expansion bolt is actually achieved, the embedded block is arranged in addition, the fixing effect can be enhanced, the function of the embedded block is also defined by self, and the interference or clearance fit relation can be selected, so that the fixed installation and the sliding installation are achieved.

Description

Fixing piece

Technical Field

The invention relates to the technical field of fixing components, in particular to a fixing piece.

Background

Common fixing members are bolts, screws, pins or rivets, and some kinds of bolts, such as expansion bolts, are derived. In the prior art, such components are widely used in the mechanical field in the form of standard parts.

In the application of the standard component, the fixing component has advantages and application scenes, for example, expansion bolts are mostly used for wall installation or dry hanging structures, rivets are mostly used for hot working processes, bolts are mostly used for detachable assembly, and the product is undoubtedly a successful design based on the standard component. But the product itself can not form a product mode with high relevance, if bolts are adopted, only fixing can be realized, and rivets are adopted, so that the disassembly is difficult.

Therefore, the applicant develops a new fixing piece based on the universality, the installation convenience and the stability, so as to form a whole set of product modes, such as the assembly of toys and furniture, and the connection of building steel structures. And the connection of the self does not need an adaptive structure, and only needs to correspond to the mounting hole. Unlike the connection of bolts which require threads, the connection of rivets requires a stamping device.

Disclosure of Invention

The present invention is directed to a fixing member to solve the above problems.

In order to solve the technical problems, the invention provides the following technical scheme: a fixing piece comprises at least two mutually exclusive expansion blocks, wherein the peripheral surface of an expansion part is provided with an abutting structure which is abutted against the hole wall of a hole to be installed, a pre-positioning structure is realized through mutual repulsion force,

the inner edge of the prepositioning structure is provided with an embedded block.

Preferably, the repulsive force between the expansion masses is achieved by magnetic means.

Preferably, the magnetic parts are arranged on opposite surfaces of the expansion block and are symmetrically distributed

Preferably, the magnetic part of the insertion block is attracted to the magnetic part of the expansion block

Preferably, the repulsive force between the expansion blocks is achieved by elastic parts that are contactingly connected between the expansion blocks.

Preferably, guide parts are arranged between the expansion blocks, and the expansion blocks repel each other along the extension direction of the guide parts;

the expansion block and the embedded block attract or repel each other along the extending direction of the guide part.

Preferably, the locating lever has handheld end and link, and the link can be dismantled with the inflation piece and be connected, through the installation and the dismantlement of handheld steerable link of holding end and inflation piece.

Preferably, each expansion part is connected with a positioning rod, and adjacent positioning rods are provided with a tendency of repelling or attracting each other.

Compared with the prior art, the invention has the beneficial effects that:

the expansion block is positioned at the periphery and is of a split structure, the embedded block is arranged at the inner edge of the expansion block, the expansion block is abutted against a hole position to be installed through repulsive force among the expansion blocks, the fixing effect similar to that of an expansion bolt is actually achieved, the embedded block is arranged in addition, the fixing effect can be enhanced, the function of the embedded block is also defined by self, and the interference or clearance fit relation can be selected, so that the fixed installation and the sliding installation are achieved.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is an exploded view of FIG. 1;

FIG. 3 is a top view of FIG. 1;

FIG. 4 is a schematic structural view of the split insert block of the embodiment;

FIG. 5 is a schematic view of the structure of the split inserts repelling each other;

FIG. 6 is a schematic view of the assembly of the auxiliary device with the fastener;

FIG. 7 is a schematic view of the connection between the auxiliary device and the fixing device;

FIG. 8 is a diagram illustrating an application scenario of a fixture;

FIG. 9 is a schematic view of another application scenario of the fixing element;

FIG. 10 is a schematic diagram of a structure in which repulsion is realized by a spring in the embodiment;

fig. 11 is a schematic structural diagram of the embodiment, in which repulsion is achieved by using a spring.

Detailed Description

For convenience of use, the embodiment of the invention provides a fixing piece. The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the examples of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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 invention.

The present embodiment provides a fixing member, and referring to fig. 7 first, the most primarily applied scenario of the present embodiment is to perform via connection between two hole-containing members, which may be connecting rod members or plate members.

The fixing piece is provided with at least two expansion blocks, wherein the quantity of the expansion blocks can be set according to the size and the layout of the connecting parts in the actual situation; at least two expansion blocks are not specifically limited, and the expansion blocks are not integrated structures and are split structures.

Next, referring to fig. 1 and 2, only the simplest unit of "two expansion blocks" will be described in detail. The two expansion blocks are a first expansion block 2 and a second expansion block 33 respectively; after the quantity of the expansion blocks is determined, the profile structure of the expansion blocks needs to be designed, the structure based on the mounting hole in the structural design is taken as an example of the round hole in fig. 7, the expansion blocks need to be abutted against the wall of the hole in the using process, so that the fixation effect is improved for the uniformity in hand, and the peripheral surface of the expansion blocks is designed into an arc structure which is close to or equal to the profile curvature of the wall of the hole of the round hole. If the quad slit also is the reason, the inflation piece is used for global and the pore wall adaptation of butt pore wall can.

Finally, the insert 1 is a part which is accommodated between the expansion blocks, so that the structural design of the insert 1 should be based on the number and distribution of the expansion blocks.

Referring to fig. 3 and 4, when the two expansion blocks are bilaterally symmetrical, the embedding block 1 between the opposite surfaces of the two expansion blocks only needs to have two side surfaces opposite to the expansion blocks; if the expansion blocks are more than two and are distributed in central symmetry, the side surfaces of the embedded block 1 are arranged between the opposite surfaces of each expansion block and correspond to the expansion blocks (the principle and the action of the embedded block are described in the following of the embodiment one by one). Referring to the case of fig. 3, four expansion blocks correspond to the insertion block 1 having a cross-shaped section.

The expansion blocks have a mutually repelling force in the mounted state, so that they can be pre-fixed in the holes shown in fig. 7, and finally the insertion block 1 is inserted for functional mounting.

The term "functionally mounted" as used herein refers to the functions to be performed by the two parts being connected relative to the fastener, including fastening and sliding.

In a preferred embodiment of the invention, the repulsive force is achieved by using magnetic means, i.e. two magnets are arranged on the imaginary opposite sides of the expansion mass to achieve mutual repulsion.

Taking fig. 1 and fig. 2 as an example, the specific structure is as follows: the second expansion block 3 and the first expansion block 2 are designed into a circular arc outer side surface structure, the inner side surface is designed into a plane structure, and the embedded block 1 is designed into a double-plane side wall structure (shown in a specific reference). For convenience of production and assembly, the second expansion part 3 and the first expansion block 2 may be provided in the same standard structure. A magnetic part is embedded in the part, and the magnetic part can adopt a permanent magnet or an electromagnet (the embodiment only takes the permanent magnet as an example). At the same time, magnetic parts (14 and 16 in the figure) are also embedded in the embedded block 1, and the magnetic parts of the second expansion block 3/the first expansion block 2 correspond to the magnetic parts in the embedded block 1, so that the state shown in figure 2 is formed, and the attraction or the repulsion between the adjacent parts is realized. The guide portion is further provided as a guide rail structure 4 as shown in fig. 2, the guide rail structure 4 penetrates the insertion block 1 to connect the second expansion block 3 and the first expansion block 2, in this embodiment, the second expansion block 3 is used as a fixed end of the guide rail, an avoidance hole 15 (which is also used as a guide groove of the guide rail) is formed in the insertion block 1 based on a path of the guide rail, and a guide groove slidably connected to the guide rail is also formed in the first expansion block 2. It is worth mentioning that the path of the guide is in the middle of the two magnetic parts, as clearly shown in the figure by the structure of the insert 1 (15 in the position in the middle between 167 and 14), and the extension direction of the guide is parallel to the magnetic repulsion/attraction direction.

It is worth mentioning that repulsion between the expansion blocks can be achieved by using contact-mounted components such as springs or elastic pieces, and specifically refer to fig. 9 and 10. In the figure, A is a spring and B is a spring plate.

It should be noted here that the expansion blocks referred to above are preferably identical fitting structures, and referring to fig. 3, that is, the shape structure of each expansion block is identical, and corresponds to an entirety (with respect to a hole symmetrical with respect to its own structure), and several expansion blocks are equally divided as the expansion blocks, which is a preferred embodiment of the present invention. But could in principle also be unequal, i.e. unequal for each expansion block. As in the case of fig. 4, the region 1a can be considered as an expansion block or as part of an insertion block. In other words, although the insert block may be designed to function as an expansion block after being divided, the divided design may also function as the insert block itself with respect to the space between adjacent expansion blocks. Specifically to fig. 4, the region 1a and the central region are repulsive for abutting against the hole wall, but the region 1a and the expansion block may be either repulsive or attractive.

In addition, at the position where the peripheral sides of the first expansion block 2 and the second expansion block 3 are butted with the connecting hole (if the embedded block is of a split structure and is used for being butted with the connecting hole, the structure should be arranged at the periphery of the connecting hole), a butting structure is arranged for preventing the connecting hole from being separated (refer to X in the figure), a slotted mode is adopted in the figure 1 so as to be matched with the inner wall of the connecting hole, and when in connection, the two invisible inner walls of the connecting hole are placed in the slot, so that the separation prevention and the stability are realized. In other preferred embodiments of the present invention, a convex bump structure or an embedded rubber ring structure may be further provided, so as to increase friction there and prevent falling off.

The design of "functional installation" is mainly divided into two functions, namely a fixing function and a sliding function.

The design comprises the following steps: the embedded block 1 is accommodated in the expansion block in an interference manner, and the expansion block is further abutted against the hole wall.

The embedded block 1 and the expansion block are both of a mutually attracting structure, and taking the magnetic part as an example here, the surface of the embedded block 1 opposite to the expansion block is provided with a magnetic part attracting (a steel material may be adopted, or a magnet separately installed and attracted with the magnet of the expansion block may be adopted). It should be noted here that in the attraction scheme, the two expansion parts still abut against the hole wall, and at least limit the axial displacement of the hole wall to prevent the hole wall from falling off. The advantage of this scheme is that its fixed effect is obvious, but also possesses certain sliding effect, can regard embedding piece 1 as a longer slide rail, and the inflation piece takes the mounted part can realize the slip stop in this slide rail optional position.

The insertion block 1 attracts and repels a part of the expansion blocks, and the insertion block 1 attracts and repels a second expansion block 3, as in the case shown in fig. 1, so that the insertion block can achieve a relatively significant fixing effect based on the above-described scheme in which all of the expansion blocks attract and repel each other, but has a sliding ability and a sliding friction force is small compared to the above-described scheme.

The embedded block 1 and all expansion blocks repel each other to form a sliding structure similar to magnetic suspension.

In conclusion, the user can adopt the scheme to realize the effect of the specific application scene. It is worth mentioning that the axial length of the insert 1 in the present invention need not be limited, that is, the above-mentioned solutions can be allowed to coexist on the insert 1 at the same time. For example, a segment of the insert may be provided with a fully attracting segment, a fully repelling segment, or a semi-attracting and semi-repelling segment.

It should be noted here that the split insertion blocks (see fig. 4 and 5) form a repulsive force in an oblique direction (the arrow in fig. 5 is the direction of force) with each other, and since the split insertion blocks are located between the expansion blocks, the oblique repulsive force forms two component forces, one component force presses the split insertion block 1a against the hole wall, and the other component force presses the expansion block in the oblique direction by the split insertion block 1 a. Thereby improving the fit of the fixing and the hole wall. The repulsive force between the embedded pieces here can also be applied by magnetic means. A spring or a leaf spring.

With respect to installation, the overall installation process is actually two deformation processes for the fixture itself, from compression to expansion, based on the structural design of the fixture as described above.

Taking the installation scenario of fig. 8 as an example, and taking the installation scenario of fig. 7 as an example, the installation position on the figure is completely exposed to the outside. The fixing piece can be directly held by hand to be compressed and then placed into the mounting hole to be released to be expanded and fixed. For convenience of operation, several points of force for clamping may be provided on the fixture. One of the force points is inevitably placed on the expansion part 2 and the other force point is placed on the positioning part 3 or the reference part 1. Before installation, the two force application points are controlled to be close to each other so as to realize a compression state, and after the two force application points enter the installation position, the two force application points are released so as to expand.

How "force points" are set: in this embodiment, a hole is formed, and similar to the installation scenario of fig. 8, the hole can be pinched by a finger directly to compress or release the hole. In addition to the use of an opening, a step is also extended from the end of the body to perform the force application function.

Referring to fig. 9 again, in the installation scenario of fig. 9, the part to be installed is inside (G in the drawing), and the installation cannot be completed by the direct manual operation in the above-mentioned method, but the installation concept is the same, and only the compression-expansion process of the fixing element is needed.

Manual inactions may employ an aid. The aid needs to function as a forwardly projecting part, so its body requires a rigid shaft structure, while the shaft must be detachably connected to the fixing part in order to retrieve the aid after the installation has been completed. In addition, the operating end of the detachable connection is necessarily located at the handheld end. Taking fig. 2 and 5-6 as an example, a plurality of threaded holes (21, 11, 31 in the figures) are formed in the fixing piece, or unthreaded holes (12 and 13 in the figures) can be simultaneously formed for temporary positioning (for example, fine adjustment after installation can be carried out by directly inserting a positioning rod) or interference positioning, and the rod-shaped object is in threaded connection with the positioning rod to realize 'detachability'. Specifically, at least two threaded rods are required, one of which is connected to the expansion part and the other of which is connected to the positioning part 2 or the reference part 1 (or three rods, which are connected to the three parts respectively), and after the connection, the front end of the rod-shaped object is pinched to compress the expansion part 2, and then the rod-shaped object is sent to the mounting position to release the rigid object, so that the expansion part 2 is completely expanded. The shaft is then rotated to remove it. On the basis, for more convenient operation, two holes can be designed on two sides of the threaded hole of the reference part 1 in the middle part, and then two rods can be inserted, so that the expansion part 2 and the reference part 1 form a triangular extrusion structure during compression, and the stress is more stable, namely the state shown in fig. 5 and 6. Returning again to the mounting structure, the description of the present embodiment is provided. The method is realized necessarily, and the following conditions should be met: a shaft capable of extending forwards, and the shaft is detachably connected with the fixing piece. Therefore, based on this concept, other conceivable implementations of the present invention are within the scope of the present invention, including but not limited to: the detachable connection adopts interference of holes, a fastener structure capable of being unlocked, a clamping structure of a mechanical claw and the like.

It is worth mentioning here that as mentioned above, the application of the "detachable" structure with holes (including threaded holes or interference holes) can be selected in a single-sided manner, so that the mounting structure of the fixing element can be detached from only one side. The anti-theft anti-dismantling device is applied to some special scenes and also has the anti-theft and anti-dismantling effects.

Based on the above assistor, in order to save cost, the assistor can be relied on in the realization that the expansion blocks repel each other. In another preferred embodiment of the invention, a part for realizing the repulsion of the expansion block, such as a magnetic part, a spring or a shrapnel and the like, is arranged at a section of the shaft of the assistor, which is close to the fixing part. Here, a structure using a magnetic member is proposed: the rod-shaped objects are provided with electromagnet structures, and the magnetism of the electromagnet on each rod-shaped object is independently controlled through the current direction, so that the attraction or the repulsion of the adjacent rigid objects are realized, and the attraction or the repulsion of the expansion blocks or the split embedded blocks connected with the rigid objects are also realized. Thereby achieving the above-described mounting and stabilization.

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

Claims

1. A fastener, characterized by: the expansion part comprises at least two mutually exclusive expansion blocks, wherein the peripheral surface of the expansion part is provided with an abutting structure which is abutted against the hole walls of the superposed mounting holes of the two parts to be mounted, and a pre-positioning structure is realized through mutual repulsion force;

2. A fastener according to claim 1, wherein: the repulsive force between the expansion blocks is realized by the magnetic components.

3. A fastener according to claim 2, wherein: the magnetic parts are arranged on the opposite surfaces of the expansion blocks and are symmetrically distributed.

4. A fastener according to claim 2, wherein: the embedded block is also provided with a magnetic part.

5. A fastener according to claim 4, wherein: the magnetic part of the embedded block and the magnetic part of the expansion block repel each other.

6. A fastener according to claim 4, wherein: the magnetic part of the embedded block is attracted with the magnetic part of the expansion block.

7. A fastener according to claim 1, wherein: the repulsive force between the expansion blocks is realized by an elastic part which is connected between the expansion blocks in a contact manner.

8. A fastener according to any one of claims 2 to 7, wherein: a guide part is arranged between the expansion blocks, and the expansion blocks repel each other along the extension direction of the guide part;

9. A fastener according to claim 1, wherein: still include the locating lever, the locating lever has handheld end and link, and the link can be dismantled with the inflation piece and be connected, through the installation and the dismantlement of handheld steerable link of end and inflation piece.

10. A fastening member as claimed in claim 1 or 9, wherein: all connected the locating lever on every inflation portion, adjacent locating lever is provided with has the trend of repelling or attracting mutually.