WO2023078390A1

WO2023078390A1 - Fixing member

Info

Publication number: WO2023078390A1
Application number: PCT/CN2022/129866
Authority: WO
Inventors: 卢伟阅
Original assignee: 深圳大拼特拼科技有限公司
Priority date: 2021-11-08
Filing date: 2022-11-04
Publication date: 2023-05-11
Also published as: CN114151429A; CN114151429B; CN118601997A

Abstract

Provided is a fixing member, comprising at least two mutually repulsive expansion blocks (2, 3). Abutting structures are provided on the peripheral surfaces of the expansion blocks (2, 3), and abut against the hole walls of coincident mounting holes of two components to be mounted, so as to implement a pre-positioning structure by means of a repulsive force between the expansion blocks (2, 3). An embedded block (1) is accommodated in the inner edge of the pre-positioning structure. The fixing member is integrally provided with two parts: one part is the expansion blocks (2, 3) which are located at the periphery and are of a split structure, and the other part is the embedded block (1) at the inner edges of the expansion blocks (2, 3). The expansion blocks (2, 3) abut against, by means of the repulsive force therebetween, hole positions to be mounted, thereby actually achieving the fixing effect similar to that of an expansion bolt. In addition, the embedded block (1) provided can play a role in strengthening the fixing; the function of the embedded block (1) is also voluntarily defined; and the relationship of interference or clearance fit can be selected, so as to achieve fixed mounting and sliding mounting.

Description

a fixture

technical field

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

Background technique

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

In the application of standard parts, the above fixing parts have their own advantages and application scenarios. For example, expansion bolts are mostly used for wall installation or dry-hanging structures, rivets are mostly used for thermal processing, and bolts are mostly used for detachable assembly. , Based on this type of product itself, it is undoubtedly a successful design. However, the product itself cannot form a highly relevant product model. If bolts are used, it can only be fixed, while rivets are difficult to disassemble.

Therefore, the applicant developed a new fixing piece based on versatility, installation convenience and stability, thus forming a complete set of product models, such as the assembly of toys and furniture, and the connection of building steel structures. And the connection itself does not require an adapted structure, only the corresponding mounting holes are required. Unlike bolted connections that require threads, rivet connections require stamping equipment.

Contents of the invention

The purpose of the present invention is to provide a fixing element to solve the problems raised in the above-mentioned background technology.

In order to solve the above-mentioned technical problems, the present invention provides the following technical solutions: a fixing piece, including at least two mutually repelling expansion blocks. The repulsive force between achieves a pre-positioned structure,

The inner edge of the pre-positioning structure houses the embedded blocks.

Preferably, the repulsive force between the expansion blocks is realized by magnetic components.

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

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

Preferably, the repulsive force between the expansion blocks is realized by an elastic part contact-connected between the expansion blocks.

Preferably, guide parts are arranged between the expansion blocks, and the expansion blocks repel each other along the extending 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 positioning rod has a hand-held end and a connection end, the connection end is detachably connected to the expansion block, and the installation and disassembly of the connection end and the expansion block can be controlled through the hand-held end.

Preferably, each expansion part is connected with a positioning rod, and adjacent positioning rods are provided with a tendency to repel or attract each other.

Compared with prior art, the beneficial effect of the present invention is:

The present invention has two parts as a whole, one is the expansion block in a split structure located on the periphery; It plays a fixed role similar to that of expansion bolts. In addition, there is an embedded block that can strengthen this fixation, and the function of the embedded block can also be defined by itself. You can choose the relationship of interference or clearance fit to achieve fixed installation. with slide mount.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the present invention;

Figure 2 is an exploded view of Figure 1;

Fig. 3 is the top view of Fig. 1;

Fig. 4 is the structural representation of the proposed split embedding block in the embodiment;

Fig. 5 is the schematic diagram of the structure of split intercalation repelling each other;

Figure 6 is a schematic diagram of the assembly of the auxiliary device with the fixing part;

Fig. 7 is a schematic diagram of the connection state of the auxiliary device and the fixture;

Fig. 8 is a schematic diagram of an application scenario of a fixing member;

Fig. 9 is a schematic diagram of another application scenario of a fixing member;

Fig. 10 is a structural schematic diagram of using springs to realize repulsion as mentioned in the embodiment;

Fig. 11 is a structural schematic diagram of the implementation of repulsion by shrapnel in the embodiment.

Detailed ways

For ease of use, an embodiment of the present invention provides a fixing piece. The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the examples of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

This embodiment provides a fixing member. Referring first to FIG. 7 , the initial application scenario of this embodiment is as shown in the figure, where two parts with holes are connected through holes, and the parts with holes can be connecting rods or plates.

The fixture itself is provided with at least two expansion blocks, where the number of "expansion blocks" can be set according to the size and layout of the connection parts in the actual situation; and at least "two" is not a specific limit to it, it is intended to It shows that the expansion block is not a one-piece structure, but a split structure.

Next, referring to Fig. 1 and Fig. 2, only the simplest unit of "two expansion blocks" will be described in detail here. The two expansion blocks are the first expansion block 2 and the second expansion block 3 respectively; after the number of expansion blocks is determined, it is necessary to design the outline structure of the expansion block, which is based on the structure of the installation hole. Take the hole as an example. When the expansion block is used, the peripheral surface needs to be in contact with the hole wall. Therefore, in order to make the hand uniform and improve the fixing effect, the peripheral surface of the expansion block is designed to be an arc that is similar to or equal to the curvature of the hole wall contour. shaped structure. The same is true for square holes, and the peripheral surface of the expansion block used to abut against the hole wall can be adapted to the hole wall.

The last is the embedded block 1, which is a component accommodated between the expansion blocks, so the structural design of the embedded block 1 should be based on the number and distribution of the expansion blocks.

Referring to Figure 3 and Figure 4, when there are two symmetrical expansion blocks, the embedded block 1 between the opposite faces of the two expansion blocks only needs to have two sides opposite to the expansion block; if there are more than two expansion blocks, the center Symmetrically distributed, the embedding block 1 is provided with a corresponding side between the opposite faces of each expansion block (its principle and function will be described one by one in the follow-up of this embodiment). With reference to the situation of Fig. 3, the four expansion blocks correspond to cross-section embedded blocks 1.

The expansion block has mutually repulsive forces in the installed state, so that it can be pre-fixed in the hole shown in Figure 7, and finally inserted into the insert block 1 for functional installation.

The "functional installation" referred to here refers to the functions to be realized by the two connected parts relative to the fixing member, including fixing and sliding.

In a preferred embodiment of the present invention, magnetic components are used to achieve repulsion, that is, two magnets are arranged on opposite sides of the expansion block 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 as a circular arc-shaped outer side structure, the inner side is set as a planar structure, and the embedded block 1 is designed as a double The structure of the plane side wall (specifically refer to the figure shown). In order to facilitate production and assembly, the second expansion part 3 and the first expansion block 2 can be provided with the same standard structure. A magnetic part is embedded in this part, and the magnetic part can be a permanent magnet or an electromagnet (this embodiment only takes a permanent magnet as an example). Simultaneously, magnetic parts (14 and 16 among the figures) are also embedded in the embedding block 1, and the magnetic parts of the second expansion block 3/first expansion block 2 correspond to each other on the position of the magnetic parts in the embedding block 1, thereby forming In the state shown in Figure 2, mutual attraction or mutual repulsion between adjacent components is realized. In addition, as shown in Fig. 2, the guide part provided is a guide rail structure 4. The guide rail structure 4 runs through the embedded block 1 and connects the second expansion block 3 and the first expansion block 2. In this embodiment, the second expansion block 3 serves as At the fixed end of the guide rail, an avoidance hole 15 (simultaneously as a guide groove of the guide rail) is provided on the embedded block 1 based on the path of the guide rail, and a guide groove slidably connected with the guide rail is also provided on the first expansion block 2 similarly. It is worth mentioning that the path of the guide rail is in the middle of the two magnetic parts, which can be clearly seen from the structure of the embedded block 1 in the figure (15 is located in the middle of 167 and 14), and the extending direction of the guide rail is in line with the magnetism. The repulsion/attraction directions are parallel.

It is worth mentioning that the mutual repulsion between the expansion blocks can be realized by contact-installed components such as springs or shrapnel, specifically refer to FIG. 9 and FIG. 10 . A in the figure is a spring, and B is a shrapnel.

It is worth mentioning here that the expansion blocks mentioned above are preferably the same accessory structure, referring to Figure 3, that is, the shape and structure of each expansion block are the same, which is equivalent to a whole (with respect to a symmetrical structure of its own. Hole), several pieces are equally divided as expansion blocks, this scheme is the preferred scheme of the present invention. But in theory, it can also be unequal, that is, each expansion block is not equal. As shown in Figure 4, the area 1a can be regarded as either an expansion block or a part of an embedded block. In other words, the embedded block can also realize the function of the expansion block after the split design, but the split design can also realize the function of the embedded block itself with respect to the adjacent expansion blocks. Referring specifically to Fig. 4, the area 1a and the central area repel each other to abut against the wall of the hole, but the area 1a and the expansion block may repel or attract each other.

In addition, at the position where the outer periphery of the first expansion block 2 and the second expansion block 3 abuts with the connection hole (if the embedded block itself is a split structure for abutting against the connection hole, its periphery should also be provided with this structure), a The abutment structure is used to prevent falling off (refer to X in the figure). In Figure 1, the slotting method is used to fit the inner wall of the connection hole. When connecting, place the two invisible inner walls of the connection hole in the groove. In order to realize anti-off and stability. In some other preferred embodiments of the present invention, a protruding bump structure or an embedded rubber ring structure can also be provided to increase the friction here and prevent falling off.

Regarding the design of "functional installation", it is mainly divided into two functions, one is fixed function and the other is sliding function.

The following design is included: the embedding block 1 is accommodated in the expansion block in an interference manner, and the expansion block is further pressed against the hole wall.

The embedding block 1 and the expansion block both have a mutual attraction structure. Taking the magnetic part here as an example, the surface opposite to the embedding block 1 and the expansion block is set so that the magnetic part attracts each other (it can be made of steel, or a magnet can be installed separately. Attract the magnet of the expansion block). It is worth mentioning here that in the solution of mutual suction, the two expansion parts are still against the hole wall, and at least limit the displacement of the hole wall in the axial direction to prevent falling off. The advantage of this solution is that its fixing effect is obvious, but it also has a certain sliding effect. The embedded block 1 can be regarded as a longer slide rail, and the expansion block can slide at any position on the slide rail with the installed parts stay.

The embedded block 1 attracts part of the expansion block and repels the other part of the expansion block. Taking the situation shown in Figure 1 as an example, the embedded block 1 attracts the first expansion block 2 and repels the second expansion block 3. Then, based on the above-mentioned schemes that all attract each other, this scheme can also achieve a relatively obvious fixing effect, but it also has the ability to slide, and compared with the above-mentioned scheme, the sliding friction of this scheme is smaller.

The embedded block 1 repels all the expansion blocks, forming a sliding structure similar to magnetic levitation.

To sum up, users can use the above solution to realize the function of specific application scenarios. It is worth mentioning that the axial length of the embedded block 1 in the present invention does not need to be limited, that is to say, the above solutions can coexist on the embedded block 1 at the same time. For example, on a section of embedded block, a full-attraction section, a full-repulsion section or a half-attraction and half-repulsion section can be set.

It is worth mentioning here that the split embedding blocks (refer to Figure 4 and Figure 5) form a repulsive force in an oblique direction (the arrow in Figure 5 is the direction of force), because the split embedding block is located on the expansion block Therefore, the inclined repulsive force forms two component forces, one of which presses the split embedding block 1a against the hole wall, and the other force makes the split embedding block 1a press the expansion block in the inclined direction. From improving the fit between the fixing part and the hole wall. Magnetic components can also be used for the repulsion between the embedded blocks here. Spring or shrapnel to achieve.

Regarding the installation, based on the structural design of the above-mentioned fixture, the entire installation process is actually two deformation processes for the fixture itself, from compression to expansion.

Taking the installation scene in Figure 8 as an example, and the installation scene in Figure 7 as an example, the installation position in the figure is completely exposed to the outside. You can directly hold the fixing piece to compress it, and then put it into the installation hole to release it to expand and fix it. In order to facilitate operation, several force points for clamping can be set on the fixing piece. One of the focus points must be placed on the expansion part 2 , and the other focus point is placed on the positioning part 3 or the reference part 1 . Before installation, control the two points of force to approach each other to achieve a compressed state, and release it after entering the installation position to expand.

How to set the "focus point": In this embodiment, the method of opening holes is adopted, and similar to the installation scene in Figure 8, you can directly pinch the position of the hole with your fingers to compress or release. In addition to adopting the method of opening, the function of extending a step from the end of the body to realize the force is also the same.

Referring to Figure 9 again, in the installation scene shown in Figure 9, the part to be installed is inside (at G in the figure), and the above-mentioned direct manual operation cannot be used to complete the installation, but the concept of installation is still the same, only need to fix the The piece completes the compression-expansion process.

Auxiliaries can be used for manual operation. The auxiliary device needs to achieve the function of protruding forward, so its body needs a rigid rod structure, and the connection between the rod and the fixing part must be detachable, the purpose of which is to remove the auxiliary device after installation retrieve. In addition, the operating end of the detachable connection must be located at the hand-held end. Taking Figure 2 and Figure 5-6 as an example, several threaded holes (21, 11, 31 in the figure) are opened on the fixing piece, and unthreaded holes (12 and 13 in the figure) can also be provided at the same time for temporary Positioning (such as fine-tuning after installation, can be directly inserted into the positioning rod), or for positioning of interference, the rod is connected with it by thread to achieve "detachable". Specifically, at least two threaded rods are required, one of which is connected to the expansion part, and the other is connected to the positioning part 2 or the reference part 1 (it can also be three rods, respectively connected to these three pieces), after the connection, pinch the rod The front end of the bar makes the expansion part 2 compress, and then it is sent to the installation position, and the rigid part is released, so that the expansion part 2 completes the expansion. Then rotate the rod to remove it. On this basis, in order to be more convenient to operate, two holes can be designed on both sides of the threaded hole of the reference part 1 in the middle, and then used to insert two rods, so that the expansion part 2 and the reference part 1 form a triangular extrusion during compression structure, the force is more stable, which is the state described in Figure 5 and Figure 6. Back to the installation structure again, through the description of this embodiment. Its necessary realization should meet the following conditions: a rod-shaped object that can be extended forward, and a detachable connection between the rod-shaped object and the fixing piece. Therefore, based on this idea, other conceivable implementations by those skilled in the art are within the scope of protection of the present invention, including but not limited to: the detachable connection adopts the interference of the hole, adopts the unlockable buckle structure, adopts the mechanical The clamping structure of the claw and so on.

It is worth mentioning here that, as mentioned above, using holes (including the structure of threaded holes or interference holes) as the "detachable structure" focus scheme, you can choose the way of opening holes on one side, so that the installation structure of the fixing parts Removal is only possible from one side. It also has the effect of anti-theft and anti-demolition in some special scenarios.

Based on the above auxiliary devices, in order to save costs, the mutual repulsion of the expansion blocks can be realized by means of auxiliary devices. In another preferred embodiment of the present invention, components that can realize the repelling of the expansion block, such as magnetic components, springs or shrapnel, etc., are installed on a section of the rod of the auxiliary device that is close to the fixing member. A structure using magnetic components is proposed here: an electromagnet structure is set on the rods, and the magnetism of the electromagnets on each rod is individually controlled through the direction of the current, so that adjacent rigid objects attract or repel each other , then the expansion block or the split embedded block connected with the rigid object also realizes mutual attraction or mutual repulsion. Thereby, the above-mentioned installation and stabilization are realized.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications and substitutions can be made to these embodiments without departing from the principle and spirit of the present invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.

Claims

A fixing piece, which is characterized in that it includes at least two mutually repelling expansion blocks, and the peripheral surface of the expansion part is provided with an abutment structure against the hole wall of the overlapping installation hole of the two parts to be installed, through mutual repulsion Force to realize the pre-positioning structure;

The inner edge of the pre-positioning structure houses the embedded blocks.
A fixing member according to claim 1, characterized in that the repulsive force between the expansion blocks is realized by magnetic components.
A fixing member according to claim 2, characterized in that: the magnetic parts are arranged on opposite surfaces of the expansion block and distributed symmetrically.
A fixing member according to claim 2, characterized in that the embedded block is also provided with a magnetic part.
A fixing member according to claim 4, wherein the magnetic part of the embedded block repels the magnetic part of the expansion block.
A fixing member according to claim 4, wherein the magnetic part of the embedded block is attracted to the magnetic part of the expansion block.
A fixing member according to claim 1, characterized in that the repulsive force between the expansion blocks is realized by an elastic part contact-connected between the expansion blocks.
A fixing member according to any one of claims 2-7, characterized in that: guide parts are arranged between the expansion blocks, and the expansion blocks repel each other along the extending 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.
A fixing member according to claim 1, characterized in that: it also includes a positioning rod, the positioning rod has a hand-held end and a connection end, the connection end is detachably connected to the expansion block, and the connection between the connection end and the expansion block can be controlled through the hand-held end Installation and disassembly.
A fixing member according to claim 1 or 9, characterized in that each expansion part is connected with a positioning rod, and adjacent positioning rods are provided with a tendency to repel or attract each other.