阅读说明：本技术 一种后排座椅塑料骨架及其制作方法 (Plastic framework of rear-row seat and manufacturing method thereof ) 是由 陆春林 于 2021-10-25 设计创作，主要内容包括：本发明涉及一种后排座椅塑料骨架及其制作方法,塑料骨架由骨架本体、加强筋和附件构成,骨架本体由多片PA6基有机板材按预设角度铺层并热压成型,加强筋设置在骨架本体上,采用短切纤维增强料粒注塑并包覆成型,附件安装在骨架本体上；本发明采用连续玻纤层铺法、镶嵌注塑法及螺栓连接等方法制作座椅靠背骨架,本方法制作的座椅靠背骨架,相比长玻纤或短玻纤注塑骨架强度更高,能适应更加苛刻的座椅实验条件；以塑料骨架代替金属骨架,并能实现金属骨架的功能,为骨架制造引入“新”工艺、“新”材料；塑料的密度大约是骨架密度的1/5到1/7,降重空间较大；骨架零件大量减少,可降低骨架制造难度；零件的减少,有利于骨架对NVH的控制。(The invention relates to a plastic skeleton of a back row seat and a manufacturing method thereof, wherein the plastic skeleton consists of a skeleton body, reinforcing ribs and accessories, the skeleton body is formed by layering a plurality of PA 6-based organic plates according to a preset angle and hot-press molding, the reinforcing ribs are arranged on the skeleton body and are formed by injection molding and cladding of chopped fiber reinforced material particles, and the accessories are arranged on the skeleton body; the seat back framework is manufactured by adopting the methods of continuous glass fiber layer-laying, embedding injection molding, bolt connection and the like, and compared with a long glass fiber or short glass fiber injection molding framework, the seat back framework manufactured by the method has higher strength and can adapt to more severe seat experiment conditions; the plastic framework replaces the metal framework, the function of the metal framework can be realized, and a 'new' process and a 'new' material are introduced for the framework manufacture; the density of the plastic is about 1/5 to 1/7 of the skeleton density, and the weight reduction space is large; the number of parts of the framework is greatly reduced, so that the manufacturing difficulty of the framework can be reduced; and the reduction of parts is beneficial to the control of the framework on NVH.)

1. A back row seat plastic skeleton which characterized in that: the framework is composed of a framework body (1), reinforcing ribs (8) and accessories;

the framework body (1) is formed by layering a plurality of PA 6-based organic boards at a preset angle and hot-press molding, and the thickness of a single PA 6-based organic board is 2.0-3.0 mm;

the reinforcing ribs (8) are arranged on the framework body (1) and are formed by injection molding and cladding of chopped fiber reinforced material particles;

the accessory is installed on skeleton body (1), comprises ISS support (2), back row lock support assembly (3), back unblock handle support (4), headrest guide pin bushing left side support assembly (5), safety belt coiler assembly (6), headrest guide pin bushing left side support assembly (7), right side lower margin hinge assembly (9), handrail left side support assembly (10) and right side lower margin fixed bolster assembly (11).

2. The plastic frame of the back row seat as claimed in claim 1, wherein: the PA 6-based organic board is prepared by adopting reinforced fiber prepreg molding.

3. The plastic frame of the back row seat as claimed in claim 2, wherein: the glass fiber in the reinforced fiber has Vf of 40-50%.

4. The plastic frame of the back row seat as claimed in claim 1, wherein: the chopped fiber reinforced particles contain glass fibers, and Vf is 30-45%.

5. The method for manufacturing the plastic frame of the back row seat as claimed in claim 1, comprising the following steps:

A. the framework body (1) is formed

A1, performing prepreg forming on continuous glass fibers, laying a plurality of single-layer plate slices at a preset angle, and heating and pressing to form a plate;

a2, pressing and molding the plate prepared in the step A1 into a framework body (1) through a hot-pressing mold;

B. manufacturing of the reinforcing bar (8): placing the framework body (1) into an injection mold, and performing injection molding on the framework body (1) to form reinforcing ribs (8) and performing edge sealing on the edges;

C. mounting accessory

C1, drilling holes at the mounting positions of the ISS support (2), the rear row lock support assembly (3), the backrest unlocking handle support (4), the headrest guide sleeve left side support assembly (5), the safety belt retractor assembly (6), the headrest guide sleeve left side support assembly (7), the right side foot hinge assembly (9), the armrest left side support assembly (10) and the right side foot fixing support assembly (11) respectively;

c2, installing the ISS support (2), the rear row lock support assembly (3), the backrest unlocking handle support (4), the headrest guide sleeve left side support assembly (5), the safety belt retractor assembly (6), the headrest guide sleeve left side support assembly (7), the right side foot hinge assembly (9), the armrest left side support assembly (10) and the right side foot fixing support assembly (11) on the framework body (1) after injection molding through bolts.

6. The method for manufacturing the plastic frame of the rear seat as claimed in claim 5, wherein the step A1 specifically comprises: cutting the continuous glass fiber according to a preset length, layering the continuous glass fiber at different positions according to the directions of 0 degree, 90 degrees, positive 45 degrees and negative 45 degrees by using glass fibers with different lengths, and pressing the continuous glass fiber into a board by polyamide infiltration and heating, wherein the glass fiber accounts for about 50 percent.

7. The manufacturing method of the plastic framework of the back row of seats as claimed in claim 5, wherein: and step B, the edge sealing material is PA6+ GF 50%.

Technical Field

The invention belongs to the technical field of automobile seats, and particularly relates to a plastic framework of a rear-row seat and a manufacturing method thereof.

Background

At present, steel is mainly used as raw materials to manufacture the seat framework in the market, and although the technology is mature, the traditional steel framework is heavy, the manufacturing process is complex, and the cost is high. For this reason, automobile seat engineers are constantly searching for new materials to replace the existing steel materials in order to minimize the seat weight, and plastic replacement of steel is one direction. However, the plastic framework replaces the metal framework, so that the operation is complex, the framework is difficult to manufacture, the realization is difficult, and the control of the framework on NVH is not facilitated.

Disclosure of Invention

The invention aims to overcome the defects of the prior art, provides a plastic framework of a rear seat and a manufacturing method of the plastic framework of the rear seat, and aims to solve the problems that when the framework of a passenger car seat is manufactured by plastic instead of steel in a light weight mode, parts are more, the process is complex, the manufacturing difficulty is high, and the framework is not beneficial to control of NVH.

The purpose of the invention is realized by the following technical scheme:

a plastic framework of a back row seat comprises a framework body 1, a reinforcing rib 8 and accessories;

the framework body 1 is formed by layering a plurality of PA 6-based organic boards at a preset angle and hot-pressing, and the thickness of a single PA 6-based organic board is 2.0-3.0 mm;

the reinforcing ribs 8 are arranged on the framework body 1 and are formed by injection molding and cladding of short fiber reinforced material particles;

the accessory is installed on skeleton body 1, by ISS support 2, back row lock support assembly 3, back unblock handle support 4, headrest guide pin bushing left side support assembly 5, safety belt coiler assembly 6, headrest guide pin bushing left side support assembly 7, right side lower margin hinge assembly 9, handrail left side support assembly 10 and right side lower margin fixed bolster assembly 11 constitute.

Further, the PA 6-based organic board is made by adopting reinforced fiber prepreg molding.

Furthermore, the glass fiber in the reinforced fiber has Vf of 40-50%.

Furthermore, the glass fiber in the chopped fiber reinforced material particles has Vf of 30-45%.

The invention relates to a method for manufacturing a plastic framework of a rear-row seat, which comprises the following steps:

A. molding of the skeleton body 1

A1, performing prepreg forming on continuous glass fibers, laying a plurality of single-layer plate slices at a preset angle, and heating and pressing to form a plate;

a2, pressing and molding the plate prepared in the step A1 into a framework body 1 through a hot-pressing mold;

B. manufacturing of the reinforcing ribs 8: placing the framework body 1 into an injection mold, and performing injection molding on the framework body 1 to form reinforcing ribs 8 and perform edge sealing;

C. mounting accessory

C1, drilling holes at the installation positions of the ISS support 2, the rear row lock support assembly 3, the backrest unlocking handle support 4, the headrest guide sleeve left side support assembly 5, the safety belt retractor assembly 6, the headrest guide sleeve left side support assembly 7, the right side foot hinge assembly 9, the armrest left side support assembly 10 and the right side foot fixing support assembly 11 respectively;

c2, the ISS support 2, the rear row lock support assembly 3, the backrest unlocking handle support 4, the headrest guide sleeve left side support assembly 5, the safety belt retractor assembly 6, the headrest guide sleeve left side support assembly 7, the right side foot hinge assembly 9, the armrest left side support assembly 10 and the right side foot fixing support assembly 11 are installed on the framework body 1 after injection molding through bolts.

Further, step a1 specifically includes: cutting the continuous glass fiber according to a preset length, layering the continuous glass fiber at different positions according to the directions of 0 degree, 90 degrees, positive 45 degrees and negative 45 degrees by using glass fibers with different lengths, and pressing the continuous glass fiber into a board by polyamide infiltration and heating, wherein the glass fiber accounts for about 50 percent.

Further, in the step B, the material of the edge sealing is PA6+ GF 50%.

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

the seat back framework is manufactured by adopting the methods of continuous glass fiber layer-laying, embedding injection molding, bolt connection and the like, and compared with a long glass fiber or short glass fiber injection molding framework, the seat back framework manufactured by the method has higher strength and can adapt to more severe seat experiment conditions; compared with the method of replacing steel by plastic, the method is the most potential method; compared with the traditional steel skeleton, the steel skeleton has the characteristics of few working procedures, few parts, low process cost and the like, and has more advantages in solving the problems of NVH and the like. In particular, the following advantages are provided:

1. the plastic framework replaces the metal framework, the function of the metal framework can be realized, and a 'new' process and a 'new' material are introduced for the framework manufacture;

2. the density of the plastic is about 1/5 to 1/7 of the skeleton density, and the weight reduction space is large;

3. the number of parts of the framework is greatly reduced, so that the difficulty in manufacturing the framework can be reduced;

4. and the reduction of parts is beneficial to the control of the framework on NVH.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural view of a plastic frame of a rear seat of the present invention.

In the figure, 1, a framework body 2, an ISS support 3, a rear row lock support assembly 4, a backrest unlocking handle support 5, a headrest guide sleeve left side support assembly 6, a safety belt retractor assembly 7, a headrest guide sleeve right side support assembly 8, reinforcing ribs 9, a right side foot hinge assembly 10, an armrest left side support assembly 11 and a right side foot fixing support assembly are adopted.

Detailed Description

The invention is further illustrated by the following examples:

the present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present invention, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.

As shown in figure 1, the plastic framework of the back row seat comprises a framework body 1, a reinforcing rib 8 and accessories.

The framework body 1 is formed by layering single-layer board slices of a PA 6-based organic board at a preset angle and hot-press molding, the thickness of the PA 6-based organic board is 2.0-3.0mm, the PA 6-based organic board is formed by adopting reinforced fiber prepreg molding, and the Vf is 40-50% of glass fiber.

The reinforcing ribs 8 are arranged on the framework body 1, and are formed by injection molding and cladding of chopped fiber reinforced material particles, so that the rigidity of the seat is improved, the functional structure is integrated, and the overall quality is reduced. The chopped fiber reinforced particles contain glass fibers, and Vf is 30-45%. The integrated parts are as follows: steel pipe frame, left and right side stabilizer blade, metalwork connection structure etc.. The metal piece connecting structure can ensure the strong rigidity of a product.

The accessory is installed on skeleton body 1, by ISS support 2, back row lock support assembly 3, back unblock handle support 4, headrest guide pin bushing left side support assembly 5, safety belt coiler assembly 6, headrest guide pin bushing left side support assembly 7, right side lower margin hinge assembly 9, handrail left side support assembly 10 and right side lower margin fixed bolster assembly 11 constitute.

The invention relates to a method for manufacturing a plastic framework of a rear-row seat, which comprises the following steps:

A. molding of the skeleton body 1

A1, cutting the continuous glass fiber according to a preset length, layering the glass fiber with different lengths according to different positions in directions of 0 degree, 90 degrees, positive 45 degrees and negative 45 degrees respectively, and pressing the glass fiber into a board through polyamide infiltration and heating, wherein the glass fiber accounts for about 50%;

and A2, pressing and molding the plate into the framework body 1 through a hot-pressing mold.

B. Manufacturing of the reinforcing ribs 8: putting the framework body 1 into an injection mold, and performing injection molding on the framework body 1 to form the reinforcing ribs 8 and seal edges, wherein the materials are PA6+ GF 50%.

C. Mounting accessory

C1, drilling holes at the installation positions of the ISS support 2, the rear row lock support assembly 3, the backrest unlocking handle support 4, the headrest guide sleeve left side support assembly 5, the safety belt retractor assembly 6, the headrest guide sleeve left side support assembly 7, the right side foot hinge assembly 9, the armrest left side support assembly 10 and the right side foot fixing support assembly 11 respectively.

C2, the ISS support 2, the rear row lock support assembly 3, the backrest unlocking handle support 4, the headrest guide sleeve left side support assembly 5, the safety belt retractor assembly 6, the headrest guide sleeve left side support assembly 7, the right side foot hinge assembly 9, the armrest left side support assembly 10 and the right side foot fixing support assembly 11 are installed on the framework body 1 after injection molding through bolts.

It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.