Production method of waterproof inner handle switch box and switch box

Abstract

The invention belongs to the technical field of vehicle switches, and discloses a production method of a waterproof inner handle switch box, which comprises the following steps: step 1, producing an injection molding sub-assembly; 2, the part, exposed out of the punching hole, of the insertion piece is subjected to punching treatment; step 3, producing a shell assembly; a switch box with an inner handle is characterized in that chamfering structures are arranged on the surface of a shell assembly and correspond to bent inserting pins of inserting pieces, a plurality of hollow grooves are formed in the surface of the shell assembly, a label groove is formed in the surface of the shell assembly, and product label paper is pasted in the label groove; opening and closing actions of the automobile door are achieved by shifting switch on-off signals, and the automobile door opening and closing device is characterized in that an internal contact pin is not exposed in a secondary injection molding mode, the risk of contact pin short circuit of a product in a severe environment is avoided, the function reliability of the product is guaranteed, the structure is a left mirror image part and a right mirror image part, and the process principle of the right part is consistent with that of the left part.

Description

Technical Field

[0001] The invention belongs to the field of vehicle switches, and in particular relates to a production method of a waterproof inner handle switch box and a switch box. Background Art

[0002] In the production process of the existing vehicle inner handle switch box, the insert is fixed in the mold, fixed by upper and lower molds, and then the plastic particles are melted for injection molding. This production process has the risk of the insert leaking after demolding; secondly, the switch box insert contains multiple groups of pins, which need to be placed in the mold in turn for positioning. There is a large error in multiple positioning, which affects the consistency of the quality of the finished product. Therefore, how to eliminate the problems existing in the above-mentioned prior art and improve the product waterproof performance and product quality needs to be solved by technical personnel in this field. Summary of the invention

[0003] In order to solve the above problems existing in the prior art, the present invention aims to provide a production method of a waterproof inner handle switch box and a switch box.

[0004] The technical solution adopted by the present invention is:

[0005] A method for producing a waterproof inner handle switch box comprises the following steps:

[0006] Step 1: Produce injection molding sub-assembly

[0007] The insert is placed in mold No. 1 and is formed into an injection sub-assembly through injection molding. Various structures provided in mold No. 1 form three punching holes, multiple fusion holes, multiple process holes 1 and three limit holes at different positions on the surface of the injection sub-assembly. The process hole 1 is left after the upper and lower molds of mold No. 1 press the insert to position and injection mold. The position of the positioning hole on the injection sub-assembly is staggered with the position of the insert;

[0008] Step 2: Punch the exposed part of the insert at the punch hole;

[0009] Step 3: Production of housing assembly

[0010] The injection molding sub-assembly is positioned and placed in the second mold through three limiting holes to perform secondary injection molding to obtain a shell assembly. During the process, each punching hole, each fusion hole and each process hole 1 are filled with injection molding medium, and a plurality of process holes 2 are left on the surface of the shell assembly due to the internal clamping structure of the second mold clamping the injection molding sub-assembly;

[0011] Step 4, assemble the micro switch 1 and the micro switch 2 at the corresponding positions of the housing assembly to form a finished product.

[0012] Furthermore, in step S1, positioning hole 1 is opened at the two bent pins of the plug, and positioning hole 1 is used to position the plug in mold No. 1. After the injection molding sub-assembly is produced by mold No. 1, positioning hole 2 is left in the injection molding sub-assembly.

[0013] on the other hand

[0014] An inner handle switch box, wherein a chamfer structure is provided on the surface of the housing assembly and at the bent pins corresponding to the inserting piece.

[0015] Furthermore, a plurality of hollow grooves are provided on the surface of the shell assembly.

[0016] Furthermore, a label slot is provided on the surface of the housing assembly, and a product label paper is pasted in the label slot.

[0017] The beneficial effects of the present invention are:

[0018] The present invention realizes the opening and closing action of the vehicle door by toggling the on-off signal of the toggle switch. The highlight of the present invention is that the internal pins are prevented from leaking out through secondary injection molding, thereby avoiding the risk of short circuit of the pins in harsh environments and ensuring the functional reliability of the product. This structure is a left and right mirror image part, and the process principle of the right part is consistent with that of the left part. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the three-dimensional explosion structure of the present invention;

[0021] Figure 3 It is a schematic diagram of the full cross-sectional plan structure of the present invention;

[0022] Figure 4 is a schematic diagram of the three-dimensional structure of the insert;

[0023] Figure 5 It is a three-dimensional structural schematic diagram of the injection molding sub-assembly;

[0024] Figure 6 It is a three-dimensional structural schematic diagram of each process hole of the injection molding sub-assembly;

[0025] Figure 7 Schematic diagram of each chamfer structure of the present invention;

[0026] Figure 8 It is a schematic diagram of the distribution structure of each hollow groove of the present invention;

[0027] Fig. 9 It is a schematic diagram of the three-dimensional structure of the label slot of the present invention;

[0028] Fig.10It is a schematic diagram of the process flow of the present invention;

[0029] Fig.11 It is a schematic diagram of the prior art structure of the present invention.

[0030] Figure numerals; among them, 1, micro switch one; 2, micro switch two; 3, housing assembly; 4, insert; 41, positioning hole one; 42, punching part; 5, injection molding sub-assembly; 51, positioning hole two; 52, chamfering structure; 53, fusion hole; 54, punching hole; 55, process hole one; 56, limit hole; 57, process hole two; 58, hollow groove; 59, label groove. DETAILED DESCRIPTION

[0031] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0032] Example 1

[0033] like Figure 1-11 As shown, a method for producing a waterproof inner handle switch box comprises the following steps:

[0034] Step 1: Production of injection molding sub-assembly 5

[0035] The insert 4 is placed in the No. 1 mold and is formed into an injection molding sub-assembly 5 by injection molding. The various structures provided in the No. 1 mold form three punching holes 54, a plurality of fusion holes 53, a plurality of process holes 55 and three limit holes 56 at different positions on the surface of the injection molding sub-assembly. The process holes 55 are left after the upper and lower molds of the No. 1 mold are pressed to position the insert 4 and injection molding. The position of the positioning hole on the injection molding sub-assembly 5 is staggered with the position of the insert 4.

[0036] Step 2, the portion of the insert 4 exposed at the punching hole 54 is punched;

[0037] Step 3: Production of housing assembly 3

[0038] The injection molding sub-assembly 5 is positioned and placed in the second mold through the three limiting holes 56 to perform secondary injection molding to obtain the shell assembly 3. During the process, each punching hole 54, each fusion hole 53 and each process hole 1 55 are filled with injection molding medium, and a plurality of process holes 2 57 are left on the surface of the shell assembly 3 due to the internal clamping structure of the second mold pressing the injection molding sub-assembly 5;

[0039] Step 4, assemble the micro switch 1 and the micro switch 2 2 at corresponding positions of the housing assembly 3 to form a finished product.

[0040] Furthermore, in step S1 , positioning holes 41 are provided at the two bent pins of the insert 4 , and the positioning holes 41 are used to position the insert 4 in mold No. 1. After the injection molding sub-assembly 5 is produced by mold No. 1, the injection molding sub-assembly 5 has positioning holes 51 .

[0041] Specifically, the production method of the waterproof inner handle switch box is to provide an integral plug-in sheet 4 so as to facilitate its overall positioning in the No. 1 mold, thereby facilitating the production needs of the automated assembly line, effectively improving each plug-in pin (three groups of plug-in pins are formed after the plug-in sheet 4 is punched out), thereby effectively improving the product production progress and reducing the difficulty of product production. After the plug-in sheet 4 is injection molded into the injection molding sub-assembly 5, a punching hole 54, a fusion hole 53 and a limit hole 56 are provided through the No. 1 mold structure during the molding process, and a process hole 55 is left when the No. 1 mold clamps the plug-in sheet 4, and at the same time, each passage is formed by cutting off the punching portion 42 of the plug-in sheet 4;

[0042] Then, the injection molding sub-assembly 5 is placed in the second mold and accurately positioned through the limiting hole 56, and then a secondary injection molding is performed to form the shell assembly. During this period, the injection molding medium fills the punching hole 54, the fusion hole 53 and the process hole 1 55, so that the injection molding fusion is more sufficient;

[0043] After the secondary injection molding is completed, only the limit hole 56 and the second process hole 57 left by the second mold for clamping the injection molding sub-assembly 5 are left on the surface of the shell assembly 3. At this time, the inserts 4 are all wrapped by the injection molding medium and will not leak out, thereby effectively improving the waterproof performance of the product and preventing the switch box from being flooded and causing its malfunction or even damage, thereby effectively extending the service life of the equipment.

[0044] Example 2

[0045] An inner handle switch box, wherein a chamfer structure 52 is provided on the surface of a housing assembly 3 and at the locations corresponding to the bent pins of an inserting piece 4.

[0046] Furthermore, a plurality of hollow grooves 58 are formed on the surface of the housing assembly 3 .

[0047] Furthermore, a label slot 59 is provided on the surface of the housing assembly 3 , and a product label paper is pasted in the label slot 59 .

[0048] Specifically, the waterproof inner handle switch box assembly includes a housing assembly 3, a micro switch 1, and a micro switch 2; the inner plug 4 of the housing assembly 3 is molded by secondary injection molding, and the pins and the plastic granule raw materials are firstly injection molded into an injection molding sub-assembly 5, and then the inner plug 4 is punched into separate unconnected pins by tooling, and then the housing assembly 3 is secondary injection molded, and finally the micro switch 1 and two micro switches 2 are installed;

[0049] The door is opened and closed by toggling the switch on and off. The highlight of this structure is that the internal pins are prevented from leaking out through secondary injection molding, avoiding the risk of short circuit in harsh environments and ensuring product functional reliability. This structure is a left and right mirror image, and the process principle of the right part is the same as that of the left part.

[0050] In addition, when the housing assembly 3 is injected, a chamfer structure 52 is provided at the place where the pin is placed in the mold and at the place where the mold is closed, so as to facilitate the injection sub-assembly 5 to be placed in the mold for secondary injection molding and the closing of the upper and lower molds;

[0051] In order to prevent uneven wall thickness of the housing assembly 3 during secondary injection molding, a hollow groove 58 is designed at the thicker part to prevent the wall thickness from being too thick and causing the product to shrink and deform.

[0052] The housing assembly 3 is also provided with a label slot 59 of 11.5×11.5×0.3 mm for pasting product label paper to facilitate product traceability. The present invention is not limited to the above optional implementations. Anyone can derive other forms of products under the inspiration of the present invention. However, no matter what changes are made in its shape or structure, any technical solution that falls within the scope of the claims of the present invention falls within the protection scope of the present invention.

Claims

1. A method for producing a waterproof inner handle switch box, characterized in that: The following steps are involved: Step S1: Production of injection molding sub-assembly The insert is placed in mold No. 1 and is formed into an injection sub-assembly through injection molding. Various structures provided in mold No. 1 form three punching holes, multiple fusion holes, multiple process holes 1 and three limit holes at different positions on the surface of the injection sub-assembly. The process hole 1 is left after the upper and lower molds of mold No. 1 press the insert to position and injection mold. The position of the positioning hole on the injection sub-assembly is staggered with the position of the insert; Step S2, punching the portion of the insert exposed at the punching hole; Step S3, producing the housing assembly The injection molding sub-assembly is positioned and placed in the second mold through three limiting holes to perform secondary injection molding to obtain a shell assembly. During the process, each punching hole, each fusion hole and each process hole 1 are filled with injection molding medium, and the surface of the shell assembly is left with multiple process holes 2 due to the internal clamping structure of the second mold pressing the injection molding sub-assembly; Step S4, assembling the micro switch 1 and the micro switch 2 at corresponding positions of the housing assembly to form a finished product.

2. The method for producing a waterproof inner handle switch box according to claim 1, characterized in that: In the step S1, positioning holes 1 are provided at the two bent pins of the insert, and the positioning holes 1 are used to position the insert in mold No.

1. After the injection molding sub-assembly is produced by mold No. 1, the injection molding sub-assembly has positioning holes 2.

3. An inside handle switch box manufactured by the production method of the waterproof inside handle switch box according to claim 2, characterized in that: The surface of the housing assembly and the locations corresponding to the bent pins of the insert are both provided with chamfered structures.

4. The inner handle switch box according to claim 3, characterized in that: The surface of the shell assembly is provided with a plurality of hollow grooves.

5. The inner handle switch box according to claim 4, characterized in that: A label slot is provided on the surface of the housing assembly, and a product label paper is pasted in the label slot.

Images