KR20240049056A - Fastening assembly with enhanced fastening force and method of fastening using the same - Google Patents

Abstract

The present invention relates to a fastening assembly with improved fastening force and a fastening method using the same.
In the fastening assembly including a fastening body inserted into a continuously connected fastening groove formed on the lower fixture and the upper fixture, and an insertion body inserted into an insertion hole formed in the center of the fastening body, the insertion hole is the fastening The present invention relates to a fastening assembly formed along the longitudinal direction of the body, wherein the insertion body is inserted into and coupled to the insertion hole, and a fastening method using the same.

Description

Fastening assembly with enhanced fastening force and method of fastening using the same}

The present invention relates to a fastening assembly with improved fastening force and a fastening method using the same. Specifically, it relates to a fastening assembly with improved fastening force that can prevent loss of fastening force due to loosening of the fastening assembly fastening members due to external shock or shaking, and a fastening method using the same.

Secondary batteries are used in a variety of devices, from mobile devices to electric vehicles. Small devices have a large number of battery cells, but in automobiles, battery modules that electrically connect multiple battery cells or battery packs containing multiple such battery modules are used.

The battery module case storing a plurality of battery cells and the battery pack case storing a plurality of battery modules are equipped with a fastening assembly to secure the cases to safely store them. However, in the case of battery packs installed in automobiles, problems such as loosening of fasteners or deterioration of fixation force may occur due to shock and vibration caused by driving.

Figure 1 is a perspective view showing a fastening member according to Patent Document 1. The fastening member shown in FIG. 1 includes a screw head 11, a first drilling fastening element 12, a second drilling fastening element 13 formed in the hollow S provided in the first drilling fastening element 12, and Includes a drilling head element (14).

The fastening member according to Patent Document 1 has a second drilling fastening element 13 formed in the hollow S formed in the first drilling fastening element 12, so that when inserting the fastening member into the fixture, the second drilling fastening element ( The position of 13) is modified so that insertion is easy, and after insertion, the second drilling fastening element 13 returns to its original position and exerts a fixing force.

The fastening member according to the prior art is equipped with a second drilling fastening element 13 located in the hollow (S), making it easy to insert and fasten. However, after fastening, the fastening force is reduced due to external shock or vibration, making fastening of the fastening member difficult. There is a problem that loosening may occur.

U.S. Patent Publication No. 2019-0040899 ('Patent Document 1')

The present invention is intended to solve the above problems, and is a fastening assembly with improved fastening force that can prevent defects such as loosening of fastening force or deterioration of fastening force due to external shock or vibration of members fastened by the fastening assembly. The purpose is to provide a fastening method using the same.

In order to achieve the above object, the present invention includes a fastening body inserted into a continuously connected fastening groove formed on the lower fixture and the upper fixture, and an insertion body inserted into an insertion hole formed in the center of the fastening body. In the fastening assembly, the insertion hole is formed along the longitudinal direction of the fastening body, and the insertion body is inserted into the insertion hole to provide a fastening assembly.

The insertion hole may be formed through or without penetrating the fastening body, but is preferably at least 1/2 of the total length of the fastening body.

Screws or protrusions that can engage with each other may be formed on the inside of the fastening groove and on the outside of the fastening body.

The length of the insertion body may be less than or equal to the length of the insertion hole.

A vertical cross-section in the longitudinal direction of the insertion body may be cross-shaped, polygonal, circular, or oval.

The insertion hole may or may not have a constant inner diameter.

A jaw portion extending a certain length in a direction perpendicular to the longitudinal direction may be formed at the end of the insertion body.

One or more fastening body protrusions may be formed in a protruding form inside the insertion hole formed in the fastening body.

The insertion body may have one or more insertion body protrusions formed in a protruding form on an outer side that is in close contact with the insertion hole.

Inside the insertion hole formed in the fastening body, a fastening body protrusion may be formed in a protruding form and engages with the insertion body protrusion.

The strength of the insertion body material may be less than or equal to the strength of the fastening body material.

A cover cap located above the fastening body and the insertion body and inserted into the fastening groove of the upper fixture may be added. At this time, the cover cap may be inserted into the fastening groove of the upper fixture to come into close contact with the fastening body and/or the insertion body.

In addition, the present invention includes the steps of 1) inserting and fixing the fastening body into the fastening groove formed in the lower fixture and the upper fixture, and 2) inserting the insertion body into the insertion hole formed in the center of the fastening body. Provides a fastening method including:

Step 2) may further include inserting the cover cap into the fastening groove of the upper fixture so that it is positioned above the fastening body and the insertion body. At this time, the cover cap may be inserted into the fastening groove of the upper fixture to come into close contact with the fastening body and/or the insertion body.

The present invention can be provided in a configuration that arbitrarily combines the problems to be solved above.

In this way, the present invention has the advantage that the fastening force is improved by inserting the fastening body into the insertion hole of the fastening body and increasing the pressure in the horizontal outward direction of the fastening assembly.

In addition, the present invention is provided with a jaw formed on the lower part of the insertion body, a fastening body protrusion formed on the inner surface of the fastening body insertion hole, and an insertion body protrusion formed on the outer surface of the insertion body, so that friction and fastening force between the fastening body and the insertion body are provided. There is an advantage that the fixation and fastening condition of the fastening assembly is improved.

In addition, the present invention has the advantage that the cover cap is provided in close contact with the upper surface of the fastening assembly fastened to the member, thereby preventing the fastening assembly from being separated and preventing the inflow of liquid such as water.

In addition, the present invention has the advantage that assembly and disassembly are possible, unlike the prior art.

Figure 1 is a perspective view showing a fastening member according to the prior art.
Figure 2 is an exploded perspective view showing a fastening assembly according to the first embodiment of the present invention.
Figure 3 is a schematic diagram viewed from above along the z-axis in a state in which the fastening assembly of Figure 2 is fastened.
Figure 4 is a cross-sectional view cut in the yz plane along AA' in a state in which the fastening assembly of Figure 2 is fastened.
Figure 5 is a cross-sectional view of the fastening assembly according to the second embodiment of the present invention in the same form as Figure 4.
Figure 6 is a cross-sectional view of the fastening assembly according to the third embodiment of the present invention in the same form as Figure 4.
Figure 7 is a cross-sectional view of the fastening assembly according to the fourth embodiment of the present invention in the same form as Figure 4.
Figure 8 is a cross-sectional view of the fastening assembly according to the fifth embodiment of the present invention in the same form as Figure 4.

Hereinafter, with reference to the attached drawings, an embodiment in which the present invention can be easily implemented by a person skilled in the art will be described in detail. However, when explaining in detail the operating principle of a preferred embodiment of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the gist of the present invention, the detailed description will be omitted.

In addition, the same reference numerals are used for parts that perform similar functions and actions throughout the drawings. Throughout the specification, when a part is said to be connected to another part, this includes not only cases where it is directly connected, but also cases where it is indirectly connected through another element in between. In addition, including a certain component does not mean excluding other components unless specifically stated to the contrary, but rather means that other components may be further included.

Hereinafter, the fastening assembly with improved fastening force according to the present invention and the fastening method using the same will be described with reference to the attached drawings.

Figure 2 is an exploded perspective view showing the fastening assembly according to the first embodiment of the present invention, Figure 3 is a schematic diagram viewed from above along the z-axis with the fastening assembly of Figure 2 in a fastened state, and Figure 4 is a fastening assembly of Figure 2. This is a cross-sectional view cut in the yz plane along AA' in the fastened state.

2 to 4, the fastening assembly 1000 according to the first preferred embodiment of the present invention includes a fastening body 1100, an insertion body 1200, and a cover cap 1300.

The fastening body 1100 is inserted into and fixed to the fastening groove (drawing number not shown) formed on the lower fixture (P ₁ ) and the upper fixture (P ₂ ), and has an insertion hole 1110 formed in the center, A fastening groove screw 1120 may be formed on the outer surface of the lower part.

The insertion holes (1110, 1110(b)) can fit the shape of the insertion body (1200, 1200(b)) as shown in Figure 2, but are not necessarily restricted to the shape of the insertion body and can be fixed to the insertion body. Any form is possible. The wedge-shaped insertion body 1200(a) may be inserted into the cross-shaped insertion hole 1110(a).

Meanwhile, the length of the insertion body 1200 may be less than or equal to the length of the insertion hole 1110. After the insertion body 1200 is inserted into the insertion hole 1110, it is desirable to leave a free space at the upper end of the fastening body 1100 into which a tool for fastening can be inserted.

The upper part of the fastening body (1100, 1100(a)) is movable so that it can be used with a flat screwdriver or cross-head screwdriver. The upper part of the fastening body can be processed to engage a tool such as a flat-blade screwdriver, a cross-head screwdriver, or a hex wrench, and an insertion hole of the same or different shape as that of the insertion body can be placed below it.

The screw 1120 formed on the lower outer surface of the fastening body 1100 is fastened by applying pressure when inserted into the fastening groove formed in the lower fixture (P ₁ ) and the upper fixture (P ₂ ), or rotated by a driver, etc. It can be inserted and fastened.

In addition, the screw 1120 formed on the lower outer surface of the fastening body 1100 engages with the inside of the fastening groove to enable a fixed and fastened state, like the fastening body 1100(b) shown in FIG. It may also be formed in the shape of a protrusion rather than a screw.

The width of the insertion hole 1110 formed in the fastening body 1100 has a shape that narrows downward as shown in FIG. 4(a), a shape with a constant width as shown in FIG. 4(b), and a shape with a constant width as shown in FIG. 4(c). It can be formed in a shape that becomes wider as it goes down.

The insertion hole 1110 may be formed in a shape in which the fastening body 1200 penetrates all the way to the bottom.

The insertion body 1200 is inserted into the insertion hole 1110 of the fastening body 1100 to improve the fastening force and fixing force of the fastening body 1100. The length of the insertion body 1200 is the length of the insertion hole 1110. It can be formed as follows.

Here, the strength of the material of the insertion body 1200 may be less than the strength of the material of the fastening body 1100, and the material of the fastening body 1100 is a general screw and may be made of metal such as iron or aluminum, and resin.

The insertion body 1200 may be made of the same or different material from the fastening body 1100. If the fastening body 1100 is made of a metal material, the insertion body 1200 may be made of a resin material.

It is desirable that the resin material of the insertion body 1200 is not damaged by impact. It is preferable that it is a polymer with high strength and low crystallinity. For example, it may be polypropylene, and an elastic material is more preferable.

As shown in FIG. 2, the insertion body 1200 includes an insertion body 1200 having a rectangular cross-section in the xy-plane, an insertion body 1200(a) having a circular cross-section in the xy-plane, and a square cross-section in the xy-plane. It may be formed as an insertion body 1200(b), etc., and although not shown in the drawing, it may have a polygonal shape or an oval shape.

Additionally, the right side of Figure 3 is a schematic diagram of the middle form of Figure 2, but it can also be understood as a modified form. As shown in FIG. 3, the insertion body 1200a may have a cross-section in the xy plane, and may be deformed by combining the insertion body 1200a in the shape of a conical column.

The insertion hole 1110 of the fastening body 1100 and the insertion body 1200 can be inserted because the cross-sectional shapes in the xy-axis direction are the same. Although the cross-sectional shapes are not the same, they may be transformed after coupling to become the same.

Although not shown in the drawing, the upper and lower ends of the insertion body may have different shapes. The upper part may have a cross-section that matches the shape of a tool such as a flat-head screwdriver, a Phillips screwdriver, or a hex wrench, and the lower part may have a cross-section that matches the shape of the insertion hole, such as rectangular, circular, oval, square, or cross-shaped.

The width of the insertion body 1200 has a shape that narrows downward as shown in Figure 4(a) to correspond to the insertion hole 1110 of the inserted fastening body 1100, and has a constant width as shown in Figure 4(b). It can be formed in a shape that becomes wider as it goes downward, as shown in Figure 4(c).

The cover cap 1300 is located on the upper part of the fastening body 1100 and the insertion body 1110 and can be inserted into the fastening groove of the upper fixture (P ₂ ), and is attached to the fastening body 1100 and the insertion body 1200. Clamping force can be improved by limiting movement in the vertical direction. The cover cap 1300 may be inserted into the fastening groove of the upper fixture (P ₂ ) so as to be in close contact with the fastening body 1100 and/or the insertion body 1110.

In addition, the cover cap 1300 can block the inflow of foreign substances such as water from the outside by sealing the fastening groove of the upper fixture (P ₂ ).

As an example, the material of the cover cap 1300 may be rubber, polyurethane, silicon, etc., and is positioned to be in close contact with the upper surfaces of the fastening body 1100 and the insertion body 1200, so that the fastening body 1100 and the insertion body 1200 There is no limitation as long as it is a material that can restrict the movement of and block the inflow of external foreign substances.

Figure 5 is a cross-sectional view of the fastening assembly according to the second embodiment of the present invention in the same form as Figure 4.

When described with reference to FIG. 5, the fastening assembly 2000 according to the second embodiment of the present invention is the fastening assembly according to the first embodiment described in FIGS. 2 to 4 except for the shape of the insertion body 2200 ( 1000), the description of the same configuration will be omitted.

The insertion body 2200 of the fastening assembly 2000 according to the second embodiment of the present invention may be formed at the end with a jaw 2210 extending a certain length in a direction perpendicular to the longitudinal direction.

The jaw portion 2210 is in close contact with the lower surface of the fastening body 2100 and may be formed in an empty space formed in the lower part of the fastening groove of the lower fixture (P ₁ ).

The jaw end diameter (R _i ) may be formed to be smaller than the jaw upper diameter (R _I ), and the insertion body end length (D _h ) may be formed to be smaller than the lower fixture surplus depth (D _H ). The upper diameter of the chin (R _I ) is larger than the lower hole diameter of the fastening body (2100).

Accordingly, the jaw portion 2210 has the advantage of being able to prevent the fastening assembly 2000 from being separated by improving the fastening force in the vertical direction when shock or vibration, etc., occurs in the fastening assembly 2000 in the vertical direction.

Figure 6 is a cross-sectional view of the fastening assembly according to the third embodiment of the present invention in the same form as Figure 4.

When described with reference to FIG. 6, the fastening assembly 3000 according to the third preferred embodiment of the present invention is the same as the first embodiment described in FIGS. 2 to 4 except that the shape of the fastening body 3100 is different. Since it is the same as the fastening assembly 1000, description of the same configuration will be omitted.

On the inside of the insertion hole 3110 formed in the fastening body 3100 according to the third embodiment of the present invention, one or more fastening body protrusions 3130 in a protruding form are formed to form the insertion hole 3110 of the fastening body 3100. It may be formed to be in close contact with the outer surface of the insertion body 3200 inserted into.

The fastening body protrusion 3130 is formed in a triangular or wedge shape with an inclined surface in the direction of insertion, and a jaw is provided in the opposite direction to improve the fixing force of the insertion body 3200 when shock or vibration occurs in the vertical direction and fasten the fastening assembly 3000. ) can prevent separation and maintain the fastened state.

In addition, the fastening body 3100 may be formed in a shape in which the lower end is closed as needed, which means that when the insertion body 3200 is inserted, the insertion body 3200 penetrates the insertion hole 3110 and protrudes to the lower end. can be prevented.

At this time, the surplus space with a certain volume formed at the lower end of the fastening groove formed in the lower fixture (P ₁ ) may be filled as necessary.

Figure 7 is a cross-sectional view of the fastening assembly according to the fourth embodiment of the present invention in the same form as Figure 4.

When described with reference to FIG. 7, the fastening assembly 4000 according to the fourth preferred embodiment of the present invention is the fastening assembly according to the first embodiment described in FIGS. 2 to 4, except for the shape of the insertion body 4200. Since it is the same as (1000), description of the same configuration will be omitted.

The insertion body 4200 according to the fourth embodiment of the present invention has one or more insertion body protrusions 4230 formed in a protruding form on the outer surface and in close contact with the inner surface of the insertion hole 4110.

The insertion body protrusion 4230 is formed in a triangular or wedge shape with an inclined surface in the direction of insertion, and a jaw is provided in the opposite direction to provide a fixing force between the insertion body 4200 and the fastening body 4100 when shock or vibration occurs in the vertical direction. By improving it, it is possible to prevent the fastening assembly 3000 from coming off and maintain the fastened state.

Figure 8 is a cross-sectional view of the fastening assembly according to the fifth embodiment of the present invention in the same form as Figure 4.

When described with reference to FIG. 8, the fastening assembly 5000 according to the fifth preferred embodiment of the present invention is the same as that described in FIGS. 2 to 4 except for the shape of the fastening body 5100 and the shape of the insertion body 5200. Since it is the same as the fastening assembly 1000 according to the first embodiment, description of the same configuration will be omitted.

On the inside of the insertion hole 5110 formed in the fastening body 5100 according to the fifth embodiment of the present invention, one or more fastening body protrusions 5130 in a protruding form are formed to form the insertion hole 5110 of the fastening body 5100. It may be formed to be in close contact with the outer surface of the insertion body 5200 inserted into.

The fastening body protrusion 5130 has a triangular or wedge shape with an inclined surface in the insertion direction and a jaw in the opposite direction to improve the fixing force of the insertion body 5200 when shock or vibration occurs in the vertical direction.

The insertion body 5200 has one or more insertion body protrusions 5230 formed on its outer surface and in close contact with the inner surface of the insertion hole 5110.

The insertion body protrusion 5230 is formed in a triangular or wedge shape with an inclined surface in the direction of insertion, and a jaw is provided in the opposite direction to provide a fixing force between the insertion body 5200 and the fastening body 5100 when shock or vibration occurs in the vertical direction. By improving it, it is possible to prevent the fastening assembly 3000 from coming off and maintain the fastened state.

The fastening assembly 5000 according to the fifth embodiment can ensure stronger fixing force because the fastening body protrusion 5130 and the insertion body protrusion 5230 are formed in a shape that engages or crosses each other.

In addition, the fastening method using the fastening assembly according to the present invention includes the steps of 1) inserting and fixing the fastening body 1100 into the fastening groove formed in the lower fixture (P ₁ ) and the upper fixture (P ₂ ), and 2) fastening. It includes the step of inserting the insertion body 1200 into the insertion hole 1110 formed in the center of the body 1100.

1) The step of inserting and fixing the fastening body (1100) into the fastening groove formed on the lower fixture (P ₁ ) and the upper fixture (P ₂ ) involves inserting and fixing the fastening body (1100) into the fastening groove of the lower fixture (P ₁ ) and the upper fixture (P). ₂ ) This is the step of fixing the lower fixture (P ₁ ) and the upper fixture (P ₂ ) by inserting the fastening body 1100 into the fastening groove after aligning the fastening grooves.

At this time, the fastening body 1100 can be inserted by applying pressure to the fastening groove or inserted and fixed through rotation using a driver, etc.

2) The step of inserting the insertion body 1200 into the insertion hole 1110 formed in the center of the fastening body 1100 is to insert the fastening body 1100 into the insertion hole 1110 and insert the fastening body 1100 into the fastening groove. ) can improve the fastening force.

Step 2) may further include inserting the cover cap 1300 into the fastening groove of the upper fixture so that it is positioned on the upper part of the fastening body 1100 and the insertion body 1200. At this time, the cover cap 1300 may be inserted into the fastening groove of the upper fixture (P ₂ ) so as to come into close contact with the fastening body 1100 and/or the insertion body 1110.

As the specific parts of the present invention have been described in detail above, those skilled in the art will understand that these specific descriptions are merely preferred embodiments and do not limit the scope of the present invention, and do not limit the scope of the present invention. It is obvious to those skilled in the art that various changes and modifications are possible within the scope and technical idea, and it is natural that such changes and modifications fall within the scope of the appended patent claims.

1000, 2000, 3000, 4000, 5000: Fastening assembly
1100, 1100(a), 1100(b), 2100, 3100, 4100, 5100: Fastening body
1110, 1110(a), 1110(b), 2110, 3110, 4110, 5110: Insertion hole
1120, 2120, 3120, 4120, 5120: Screw
3130, 5130: Fastening body protrusion
1200, 1200(a), 1200(b), 2200, 3200, 4200, 5200: Insert body
2210: chin
4230, 5230: Insertion body protrusion
1300, 2300, 3300, 4300, 5300: Cover cap
P ₁ : Lower fixture
P ₂ : Upper fixture
R _i : Insertion body end diameter
R _I : Clamping body end diameter
D _h : Insertion body end length
D _H : Lower fixture surplus depth

Claims (13)

Fastening bodies formed on the lower fixture and the upper fixture respectively and inserted into continuously connected fastening grooves;
an insertion body inserted into an insertion hole formed in the center of the fastening body;
In the fastening assembly including,
The insertion hole is formed along the longitudinal direction of the fastening body,
The insertion body is a fastening assembly that is coupled by being inserted into the insertion hole. According to paragraph 1,
A fastening assembly having screws or protrusions that can be engaged with each other formed on the inside of the fastening groove and on the outside of the fastening body. According to paragraph 1,
A fastening assembly wherein the length of the insertion body is less than or equal to the length of the insertion hole. According to paragraph 1,
A fastening assembly in which a vertical cross-section in the longitudinal direction of the insertion body is cross-shaped, polygonal, circular, or oval. According to paragraph 1,
The insertion hole is a fastening assembly whose inner diameter may or may not be constant. According to paragraph 1,
A fastening assembly having a jaw portion extending a certain length in a direction perpendicular to the longitudinal direction at the end of the insertion body. According to paragraph 1,
A fastening assembly in which one or more fastening body protrusions are formed in a protruding form inside the insertion hole formed in the fastening body. According to paragraph 1,
The insertion body is a fastening assembly in which one or more insertion body protrusions are formed in a protruding form on an outer side that is in close contact with the insertion hole. According to clause 8,
A fastening assembly having a fastening body protrusion formed inside the insertion hole formed in the fastening body in a protruding form and engaging with the insertion body protrusion. According to paragraph 1,
A fastening assembly wherein the strength of the insert body material is less than or equal to the strength of the fastening body material. According to paragraph 1,
a cover cap located above the fastening body and the insertion body and inserted into the fastening groove of the upper fixture;
This attached fastening assembly. In the fastening method using the fastening assembly according to any one of claims 1 to 11,
1) Inserting and fixing the fastening body into the fastening groove formed in the lower fixture and the upper fixture; and
2) inserting the insertion body into an insertion hole formed in the center of the fastening body;
Fastening method including. According to clause 12,
Step 2) thereafter inserting a cover cap into the fastening groove of the upper fixture so that it is positioned above the fastening body and the insertion body;
Fastening method added.