CN219944170U - Expansion tube expansion bag structure - Google Patents

Abstract

The utility model provides an expansion tube expansion bag structure which comprises an expansion tube body, wherein the expansion tube body is sleeved on the tube body, a first expansion bag and a second expansion bag are formed on two sides of a clamping piece, and one sides of the first expansion bag and the second expansion bag, which are far away from the clamping piece, are of an R-shaped structure. The utility model can solve the problems of low expansion and package breaking torque and poor durability of the expanded pipe in the prior art.

Description

Expansion tube expansion bag structure

Technical Field

The utility model relates to an automobile seat fitting, in particular to an expansion tube and expansion bag structure.

Background

The ends of the car seat tube assembly need to be connected to the clamp by means of an expander tube pack. The traditional expansion tube and expansion bag is extruded and formed by special equipment, such as an oil cylinder, a hydraulic press and the like. The technical process comprises the steps of inner side package molding, gear clamping piece sleeving and outer side package molding; because the inner bag and the outer bag are of asymmetric structures, and special equipment cannot be demoulded, the expansion bag forming of the inner and outer expansion pipes needs to be completed through two-sequence separation. The traditional working procedure has lower efficiency and higher cost.

When the gear clamping piece is provided with a cutting groove, because of the limitation of the process and the shape of the bulge, the part of the bulge, which is pressed into the cutting groove of the gear clamping piece, is fewer, so that the connecting joint of the pipe fitting and the clamping piece is weaker, and the damage torque is lower. Referring to fig. 1, the two folding surfaces of the inner bag are completely attached, so that the microcrack of the top 100 of the inner bag is longer and the tube is easy to crack; the part of the inner side bulge bottom 200, which is attached to the pipe body, is approximately of a right-angle structure, microcracks of the bulge bottom 200 are longer, the bulge pipe is easy to crack, and the right-angle structure is not easy to cut in meat, so that the bulge of the bulge pipe is poor in damage torque and durability. Therefore, it is necessary to provide a tube expansion package structure, which can solve the problems of low breaking torque and poor durability of tube expansion package in the prior art.

Disclosure of Invention

In view of the above, the utility model provides a tube expansion bag structure, which can solve the problems of low tube expansion bag breaking torque and poor durability in the prior art.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: the utility model provides an expand tube package structure, includes the expand tube body, and the expand tube body cup joints on the body and forms first package and the second package that expands in the both sides of clamping piece, and one side that clamping piece was kept away from to first package and the second package that expands all is "R" shape structure.

In the embodiment of the utility model, the first bulge packet and the second bulge packet are symmetrically formed about the clamping member.

In the embodiment of the utility model, the R-shaped structure comprises a water drop type structure at the top of the bulge packet and a concave angle reverse inclination structure at the bottom of the bulge packet.

In the embodiment of the utility model, the water drop type structure is internally provided with the cavity, so that the outer surface of the water drop type structure is in an arc surface structure.

In the embodiment of the utility model, the concave angle reverse inclination structure is a concave round angle structure, and the reverse inclination angle of the concave angle reverse inclination structure ranges from 5 degrees to 85 degrees.

In the embodiment of the utility model, a cutting groove is formed at the sleeving part of the clamping piece and the pipe body, the pipe expanding body is embedded into the cutting groove and is filled with the cutting groove, and a meat feeding structure is formed between the first expansion bag and the second expansion bag.

The utility model provides an expand tube package structure, includes the expand tube body, and the expand tube body cup joints on the body and forms the third package that expands of triangle-shaped structure in one side of holder, and the inboard of third package that expands is laminated with one side of holder, and the outside of third package that expands is the inclined plane structure.

In the embodiment of the utility model, the top of the third expansion bag is in a circular arc structure.

In the embodiment of the utility model, the bottom external angle of the third expansion bag is 95-175 degrees, so that the outer side of the third expansion bag forms an inclined plane structure.

The utility model adopts the technical proposal, which has the following beneficial effects:

(1) According to the utility model, the first bulge bag and the second bulge bag are in an R-shaped structure, the top of the bulge bag with the R-shaped structure is in a water drop shape, the outer surface of the water drop shape is smooth through the cavity, and the problem that the top of the bulge bag is easy to crack due to microcracks is solved; the bottom of the bulge bag with the R-shaped structure is of a concave round corner structure, so that the problem that the bottom of the bulge bag is easy to crack due to microcracks is solved. Meanwhile, the bottom of the expansion bag of the R-shaped structure is of a concave rounded corner reverse inclination structure, so that the amount of the expansion pipe entering the cutting groove is increased, and the damage torque, durability and service life of the expansion pipe are prolonged.

(2) The first bulge and the second bulge are synchronously extruded on the punch through the die and symmetrically arranged, and can be completed only by one step, so that the molding process efficiency of the tube expansion is effectively improved, and the process cost is reduced; simultaneously, when the clamping piece is provided with the grooving, the two sides can be simultaneously formed to ensure that the expansion pipe can enter the grooving, so that the damage torque of the expansion pipe is improved, and the overall performance is improved.

(3) The third bulge bag is of a triangular structure, and the bulge bag top of the triangular structure is of a round corner structure, so that the problem that the bulge bag top is easy to crack due to microcracks is solved; the outer side of the expansion bag with the triangular structure is of an inclined surface structure, so that the deformation of materials is reduced, the generation of microcracks of the expansion bag is further reduced, and the durability and the service life of the expansion pipe are prolonged.

Drawings

FIG. 1 is a partial cross-sectional view of a prior art tube expansion package structure;

FIG. 2 is a partial cross-sectional view (double sided) of the tube expansion package structure of the present utility model;

FIG. 3 is a perspective view (double sided) of the tube expansion package structure of the present utility model;

FIG. 4 is a front view (double sided) of the tube expansion package structure of the present utility model;

FIG. 5 is a schematic illustration of the formation of a tube expander structure of the present utility model (double-sided not formed, only the inner expander shown for clarity);

FIG. 6 is a schematic illustration of the formation of a tube expander structure of the present utility model (double sided formation, only the inner expander shown for clarity);

FIG. 7 is a partial cross-sectional view of the tube expander structure of the present utility model (double sided, clamp notched);

FIG. 8 is a schematic illustration of the formation of a tube expander structure of the present utility model (double-sided unshaped, notched clamps, for clarity only the inner expander shown);

FIG. 9 is a schematic illustration of the formation of a tube expander structure of the present utility model (double sided forming, clip notched, for clarity only the inner expander shown);

FIG. 10 is a process flow diagram (double sided) of the tube expansion package structure of the present utility model;

FIG. 11 is a cross-sectional view (single-sided) of the tube expansion package structure of the present utility model;

FIG. 12 is a front view (single-sided) of the tube expansion package structure of the present utility model;

FIG. 13 is a schematic illustration of the formation of a tube expander structure (single side not formed) in accordance with the present utility model;

FIG. 14 is a schematic illustration of the formation of a tube expander structure (single-sided formation) of the present utility model;

fig. 15 is a process flow diagram (single-sided) of the tube expansion package structure of the present utility model.

The correspondence of the reference numerals with the components is as follows:

100 inboard bulge bag top, 200 inboard bulge bag bottom, 1 expand tube body, 101 enter the meat structure, 2 first bulge bags, 3 second bulge bags, 4 holders, 401 grooving, 5 body, 6 water droplet structures, 601 cavity, 7 concave angle reverse pitch structures, 8 third bulge bags.

Detailed Description

In order to facilitate the understanding of the present utility model, the following description is provided with reference to the drawings and examples.

Referring to fig. 2 to 4, an expansion tube expansion structure includes an expansion tube body 1, wherein the expansion tube body 1 is sleeved on a tube body 5 and forms a first expansion bag 2 and a second expansion bag 3 on two sides of a clamping piece 4, and one sides of the first expansion bag 2 and the second expansion bag 3 far away from the clamping piece 4 are in an R-shaped structure.

The clamping piece 4 is sleeved on the pipe body 5, and the clamping piece 4 and the pipe body 5 are connected through the first bulge bag 2 and the second bulge bag 3 on two sides. The outer sides of the first bulge bag 2 and the second bulge bag 3 are provided with an R-shaped structure to increase the angle of the top of the bulge bag, so that the cracking condition caused by the long microcracks at the top of the bulge bag is improved. Meanwhile, the reverse inclination angle of the concave angle at the bottom of the bulge packet is formed by utilizing the R-shaped structure, so that the cracking condition caused by the long microcrack at the bottom of the bulge packet is improved, and the damage torque is enhanced.

Referring to fig. 2 and 4, the first and second bulges 2 and 3 are symmetrically formed about the clamping member 4.

The structural form and the size of the first bulge packet 2 and the second bulge packet 3 are identical and are symmetrically arranged, the expansion pipe body 1 is extruded and formed from two sides on the punch through a pair of special dies, and the expansion pipe can be formed only in sequence, so that the forming efficiency of the expansion pipe bulge packet is effectively improved.

Referring to fig. 2, 6, 7 and 9, the R-shaped structure includes a drop-shaped structure 6 at the top of the bag and a concave-angled reverse slope structure 7 at the bottom of the bag.

The area at the top of the expansion bag is enlarged through the water drop type structure 6, and two folding surfaces of the expansion bag are not attached, so that the occurrence of the situation that the expansion pipe body 1 is cracked due to microcracks at folding positions is effectively reduced. The corner angle of the bottom of the expansion bag is reduced through the concave angle reverse inclination structure 7, the right-angle structure in the prior art is converted into a round-angle structure, so that the condition that the expansion pipe body 1 is cracked due to microcracks at the right-angle structure is effectively reduced, the amount of the expansion pipe entering the grooving 401 can be increased through the concave angle reverse inclination structure 7, and the damage torque is improved.

Referring to fig. 2, 6, 7 and 9, the water drop type structure 6 is formed with a cavity 601 therein, so that the outer surface of the water drop type structure 6 is in an arc surface structure.

The radius of the arc surface structure of the outer surface of the water drop type structure 6 is increased as much as possible through the cavity 601, so that the generation of microcracks is reduced, and the cracking of the expansion pipe body 1 is prevented.

Referring to fig. 2 and 7, the concave-angle reverse slope structure 7 is a concave-type rounded corner structure, the angle range of the concave-angle reverse slope structure 7 is 5 ° -85 °, and the reverse slope angle of the concave-angle reverse slope structure 7 can be adaptively adjusted according to the actual use requirement.

Referring to fig. 7 and 9, a slot 401 is formed at the sleeving position of the clamping piece 4 and the tube body 5, the tube expansion body 1 is embedded into the slot 401 and fills the slot 401, a meat feeding structure 101 is formed between the first expansion bag 2 and the second expansion bag 3, and the meat feeding structure 101 is adapted to the slot 401 in shape.

Referring to fig. 8 and 9, when the clamping member 4 is provided with the slot 401, the first bulge 2 and the second bulge 3 are formed at two sides and pressed into the slot 401 at the same time, so that the amount of the expanded tube entering the slot 401, i.e. the two-side meat feeding amount, can be effectively ensured, and the breaking torque of the expanded tube can be effectively increased.

The damage torque of the expanded pipe can reach more than 500Nm, the damage torque of the traditional expanded pipe is generally about 300Nm, and the utility model has higher damage torque and longer service life.

Preferably, the slot 401 may be a flower-shaped hole, or any form of slot configuration thereof.

The forming process of the expansion tube (two sides) expansion bag structure is as follows: referring to fig. 5, 6 and 10, a clamping member 4 is placed on a tube body 5, and the two sides of the clamping member 4 are synchronously extruded by a special die to form a first bulge 2 and a second bulge 3. Referring to fig. 8 to 10, if the clamping member 4 has a slot 401, the expansion pipe bodies 1 on both sides are extruded into the slot 401 by a special die, and the meat amount on both sides is large.

Referring to fig. 11 and 12, an expansion tube and expansion bag structure includes an expansion tube body 1, wherein the expansion tube body 1 is sleeved on a tube body 5 and forms a third expansion bag 8 with a triangle structure on one side of a clamping piece 4, the inner side of the third expansion bag 8 is attached to one side of the clamping piece 4, and the outer side of the third expansion bag 8 is of an inclined plane structure.

The part of the expansion pipe body 1 sleeved between the pipe body 5 and the clamping piece 4 can be used as a radial limiting assembly surface of the pipe body, the outer side of the third expansion bag 8 with a triangular structure is of an inclined surface structure, the deformation degree is small, the deformation of the material at the outer side of the top of the third expansion bag 8 is reduced, and microcracks at the inner side of the third expansion bag 8 are further reduced.

Referring to fig. 11, the top of the third expansion bag 8 has a rounded arc structure, so as to reduce the generation of microcracks at the top of the third expansion bag 8, thereby avoiding the cracking of the expansion pipe body 1.

Referring to fig. 12, the bottom outer angle of the third bag 8 is 95 ° -175 °, so that the outer side of the third bag 8 forms an inclined plane structure, thereby reducing the deformation of the material at the outer side of the third bag 8.

The forming process of the expansion tube (single side) expansion bag structure is as follows: referring to fig. 13 to 15, the third bag 8 is formed by pressing the tube 5 with a dedicated mold, and the clamping member 4 is placed on the tube 5 and attached to the vertical surface of the third bag 8.

Compared with the traditional tube expansion forming process (beat of 22s and cost of 13.156 yuan), the tube expansion and packing structure forming process (beat of 18s and cost of 12.77 yuan) can effectively improve the process efficiency and reduce the process cost.

The present utility model has been described in detail with reference to the drawings and embodiments, and one skilled in the art can make various modifications to the utility model based on the above description. Accordingly, certain details of the illustrated embodiments are not to be taken as limiting the utility model, which is defined by the appended claims.

Claims (9)

1. The utility model provides a expand tube bulge structure, its characterized in that includes the expand tube body, and the expand tube body cup joints on the body and forms first bulge and second bulge in the both sides of clamping piece, and one side that clamping piece was kept away from to first bulge and second bulge all is "R" shape structure.

2. The tube expansion package structure of claim 1, wherein said first and second expansion packages are symmetrically formed about the clamp.

3. The expander bulge structure of claim 1, wherein the "R" shaped structure comprises a drop-type structure at the top of the bulge and a concave-angled reverse slope structure at the bottom of the bulge.

4. The expansion tube and bag structure according to claim 3, wherein the water drop type structure is internally provided with a cavity, so that the outer surface of the water drop type structure is in an arc surface structure.

5. A tube expansion package according to claim 3, wherein the concave-angled reverse slope structure is a concave-angled rounded corner structure, and the concave-angled reverse slope structure has a reverse slope angle in the range of 5 ° to 85 °.

6. The expansion tube and expansion bag structure according to claim 1, wherein a slot is formed at the sleeving part of the clamping piece and the tube body, the expansion tube body is embedded into the slot and fills the slot, and a meat feeding structure is formed between the first expansion bag and the second expansion bag.

7. The utility model provides a expand tube bulge structure, its characterized in that includes the expand tube body, and the expand tube body cup joints on the body and forms the third bulge of triangle-shaped structure in one side of holder, and the inboard of third bulge is laminated with one side of holder, and the outside of third bulge is the inclined plane structure.

8. The expander bulge structure of claim 7, wherein the top of the third bulge is rounded.

9. The tube-expanding bag structure according to claim 7 or 8, wherein the outer bottom angle of the third expanding bag is 95 ° -175 °, so that the outer side of the third expanding bag forms an inclined surface structure.