CN202493533U - Connecting and fastening device used for interlayer materials - Google Patents

Abstract

A connecting and fastening device for interlayer materials capable of simultaneously compressing in the axial and radial directions. Aiming at the problem of directly using steel bolts and nuts to connect the paper corner protector and the interlayer material cardboard may scratch and poke the cardboard or other items when the product is used, and the existing screw tube and ordinary bolts to connect the paper corner protector and the interlayer material diameter In order to solve the problem of insufficient lateral force, a sandwich structure connection and fastening device made of plastic materials is designed. Four longitudinal slots are set on the spiral tube and four corresponding top blocks are provided. When the round head bolts are screwed into When pushing the top block in the radial direction to make it tightly squeezed with the interlayer material, the tight compression of the connection and fastening device with the material to be connected in the radial direction is realized. It is suitable for the connection and fastening between interlayer materials or with paper corner protectors.

Description

A connection and fastening device for sandwich materials

technical field

The utility model relates to a connection and fastening device, in particular to a connection and fastening device for interlayer materials.

Background technique

Honeycomb cardboard, high-strength corrugated composite cardboard, etc. all belong to sandwich cardboard structure. Generally, cardboard products are formed by bonding with paper corner protector, but the bonding ability between the paper corner protector surface and the cardboard face paper is weak, and the bearing performance of the product Poor, in order to improve its bearing capacity, it is necessary to strengthen the bonding ability of the cardboard and the paper corner. The strength of the material has high requirements. If the pre-tightening force of the nut is too large, the sandwich structure will be crushed and damaged, and the bolt head will be left outside the nut after tightening, which may scratch and poke the cardboard or other contacts when the product is used. To the items, so need a special device for the connection and fastening of cardboard products. The combination of the existing screw tube and ordinary bolts can realize the connection and fastening (axial) of two plates, as shown in Figure 1, but for the sandwich cardboard structure, because the sandwich material in the middle is relatively soft, as an inserted sandwich cardboard structure The combination (radial direction) of the spiral tube (10) and the sandwich material in the sandwich cardboard (6) is not very tight, and it is necessary to adopt a structure to strengthen the spiral tube (10) and the sandwich material in the sandwich cardboard (6) force.

Contents of the invention

Aiming at the problem of directly using steel bolts and nuts to connect paper corner protectors and interlayer cardboards that may scratch and puncture the cardboard or other objects that come into contact with the product, and the combination of existing screw tubes (10) and ordinary bolts (11) The problem of insufficient radial force between the paper corner guard (5) and the interlayer material (6) (Fig. 1), the utility model designs a sandwich structure connection and fastening device made of plastic materials, and four There are four longitudinal slots and corresponding four top blocks. When the fastening bolts are screwed in, the top blocks are pushed in the radial direction so that they are tightly squeezed together with the interlayer material, and at the same time, the connection and fastening device is realized on the shaft. Tight compression with the material to be connected in the direction and radial direction. The connection and fastening device is suitable for the connection between interlayer materials or with paper corner protectors.

The technical solution adopted by the utility model to solve the technical problem is: the connection and fastening device is made of plastic, and four longitudinal slots with a certain angle are arranged on the hexagonal head screw (1), and the matching fittings are installed. Four jacking blocks (2), four jacking blocks (2) are fixed in the grooved hole on the spiral pipe with rubber ring (3) at the beginning, when the hexagonal head spiral pipe (1) with the jacking block (2) ) after inserting the materials to be connected, install the round head bolts (8). Press upwards to secure.

The beneficial effect of the utility model is that, while the material to be connected can be compressed axially, the compression of the connecting fastening device and the material to be connected can be realized radially.

Description of drawings

Fig. 1 is a schematic diagram of assembly of a conventional connection and fastening device.

Fig. 2 is a schematic diagram of the assembly of the sandwich cardboard structure connection and fastening device of the present invention.

Figure 3 is an assembly diagram of the connection and fastening device.

Figure 4 is a front view of the hexagonal head screw.

Figure 5 is a top view of the hexagonal head screw.

Figure 6 is a left side view of the hexagonal head screw.

Figure 7 is a top block structure diagram.

Figure 8 is an assembly diagram of the hexagonal head screw assembly.

Fig. 9 is a view from direction A in Fig. 8 .

Figure 10 is the front view of the round head bolt.

Figure 11 is a left side view of the round head bolt.

Figure 12 is a structural diagram of the hexagon head screw assembly after installation.

Fig. 13 is a view from direction B in Fig. 12 .

In the figure 1. Hexagonal head screw, 2. Top block, 3. Rubber ring, 4. Flat gasket, 5. Paper corner guard, 6. Sandwich material, 7. Flat gasket, 8. Round table head bolt, 10. Spiral tube, 11. Bolt.

Detailed ways

With reference to accompanying drawing 2 to accompanying drawing 13, a kind of interlayer structure connection fastening device is made up of three parts, is respectively a hexagonal head coil assembly, flat gasket (4, 7) and a round table head bolt (8), wherein The hexagonal head screw assembly consists of a hexagonal head screw (1), four top blocks (2) and a rubber ring (3).

With reference to accompanying drawing 4 to accompanying drawing 7 and accompanying drawing 9, there are four longitudinal slotted holes in the hexagonal head screw (1), the longitudinal sides of the slotted holes are at a certain angle; The angles on both sides of the slot hole in the screw (1) are the same, the radius of the outer surface is the same as that of the hexagonal head screw (1), and the radius of the inner surface is the same as half the nominal diameter of the thread of the round head bolt (8). There is a circumferential groove in the middle, and the width of the groove is the same as that of the rubber rubber ring (3).

With reference to accompanying drawing 8 to accompanying drawing 9, hexagonal head spiral pipe (1), after top block (2) and rubber rubber ring (3) form assembly, the outer surface of top block (2) and hexagonal head spiral pipe (1) Align the outer surface.

With reference to accompanying drawing 10 to accompanying drawing 11, round table head bolt (8) is to add a round table on common hexagonal head bolt structure, and the diameter of round table is smaller than the figure formed on the inner surface of four top blocks (2) in the hexagonal head coil assembly The diameter of the inscribed circle, the nominal diameter of the thread of the round table head bolt (8) is the same as the nominal diameter of the thread of the hexagonal head screw (1).

With reference to accompanying drawing 2, accompanying drawing 3, accompanying drawing 8, accompanying drawing 12 and accompanying drawing 13, at first when sandwich structure connection fastening device is used, drill slightly less than hexagonal head on paper corner guard (5) and interlayer material (6) The hole of the outer diameter of the spiral tube (1), the hexagonal head screw tube (1), four top blocks (2) and a rubber rubber ring (3) form the hexagonal head screw tube assembly, and then the flat gasket (4 ) into the holes of the materials to be connected (5, 6), and then screw the round head bolts (8) with flat washers (7) from the other end, along with the round head bolts (8 ) is in contact with the top block (2) and screwed in, and the top block (2) is pushed outward and pressed against the material to be connected; After the round table head bolt (8) part is out of contact with the top block (2), under the contraction force of the rubber rubber ring (3), the top block (2) sinks into the groove of the hexagon head screw (1) , so that the hex head screw assembly can be pulled out.

Claims (5)

1. a sandwich material is with connecting securing means; It is characterized in that connecting securing means adopts plastics to manufacture; Four vertical slotted eyes that have several angle are set on hexagon head screwed pipe (1), and supporting with it four jacking blocks (2) are installed, be fixed in the slotted eye on the screwed pipe with rubber cushion rubber (3) during four jacking blocks (2) beginning; After the hexagon head screwed pipe (1) that will have jacking block (2) inserts by the connection material; Round platform hook bolt (8) is installed, and the round platform hook bolt can make it jacking block (2) push closely with sandwich material to direction pushing radially in fastening process, realizes that connection set axially is being fixed with the footpath makes progress.

2. sandwich material according to claim 1 is with connecting securing means; It is characterized in that device is by a hexagon head screwed pipe assembly; Flat gasket (4; 7) and a round platform hook bolt (8) form, wherein hexagon head screwed pipe assembly is by a hexagon head screwed pipe (1), four jacking blocks (2) and a rubber cushion rubber (3) composition.

3. sandwich material according to claim 1 is characterized in that having four slotted eyes longitudinally in the hexagon head screwed pipe (1) with connecting securing means, and the vertical bi-side of slotted eye at an angle; The bi-side of jacking block (2) are and the identical angle in the middle slotted eye bi-side of hexagon head screwed pipe (1); The radius of outer surface is identical with the outer radius of hexagon head screwed pipe (1); The internal surface radius is half the identical with round platform hook bolt (8) screw thread nominal diameter; In the middle of outer surface, have circumferential groove, groove width is identical with the width of rubber cushion rubber (3).

4. sandwich material according to claim 1 is characterized in that hexagon head screwed pipe (1) with connecting securing means, and after jacking block (2) and rubber cushion rubber (3) formed assembly, the outer surface of jacking block (2) alignd with the outer surface of hexagon head screwed pipe (1).

5. sandwich material according to claim 1 is with connecting securing means; It is characterized in that round platform hook bolt (8) is for increasing a round platform on the conventional hexagonal-head bolt arrangement; The diameter of round platform is less than the inscribed circle diameter of four jacking blocks (2) figure that internal surface forms in the hexagon head screwed pipe assembly, and the nominal diameter of round platform hook bolt (8) screw thread is identical with the nominal diameter of hexagon head screwed pipe (1) screw thread.

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