CN111677862A

CN111677862A - Be applicable to DCT gearbox integral type injection moulding magnet subassembly

Info

Publication number: CN111677862A
Application number: CN202010567530.XA
Authority: CN
Inventors: 王红涛; 张敏; 杜连征; 刘杨; 易伟
Original assignee: SUZHOU DONGFENG FINEBLANKING ENGINEERING CO LTD
Current assignee: SUZHOU DONGFENG FINEBLANKING ENGINEERING CO LTD
Priority date: 2020-06-19
Filing date: 2020-06-19
Publication date: 2020-09-18

Abstract

The invention provides an integrated injection molding magnet assembly suitable for a DCT (discrete cosine transformation) gearbox, which comprises: the magnet subassembly suitable for DCT gearbox integral type injection moulding includes: the magnet cap comprises a magnet cap and a first magnet and a second magnet which are combined in the magnet cap in a plastic-coated mode; the top surface of magnet cap has first sampling position, second sampling position and the third sampling position that sets gradually, the sunken setting in second sampling position, first magnet with first sampling position sets up relatively, the second magnet with third sampling position sets up relatively, and first, second magnet is opposite to the polarity that corresponds sampling position. The magnet assembly is matched with a sampling position to optimally design the structure of the magnet cap, so that the magnet assembly is favorable for mounting and fixing the internal magnet.

Description

Be applicable to DCT gearbox integral type injection moulding magnet subassembly

Technical Field

The invention relates to the technical field of automobile transmission, in particular to an integrated injection molding magnet assembly suitable for a DCT (discrete cosine transformation) gearbox.

Background

The shifting fork is mainly used for gear shifting of a gearbox, is an important part of a gear shifting system on an automobile gearbox, is connected with a gear shifting control mechanism, and shifts an intermediate speed changing wheel to change the input/output speed ratio. At present, current shift fork is provided with and is applicable to DCT gearbox integral type injection moulding magnet subassembly for the sensing gear signal. However, the problem that inconvenience exists in the installation and fixation of internal magnets in an existing shifting fork applicable to the DCT gearbox integrated injection molding magnet assembly. Therefore, it is necessary to provide a further solution to the above problems.

Disclosure of Invention

The invention aims to provide an integrated injection molding magnet assembly suitable for a DCT (discrete cosine transformation) gearbox, which overcomes the defects in the prior art.

In order to solve the technical problems, the technical scheme of the invention is as follows:

an integral injection molded magnet assembly adapted for a DCT transmission, comprising: the magnet subassembly suitable for DCT gearbox integral type injection moulding includes: the magnet cap comprises a magnet cap and a first magnet and a second magnet which are combined in the magnet cap in a plastic-coated mode;

the top surface of magnet cap has first sampling position, second sampling position and the third sampling position that sets gradually, the sunken setting in second sampling position, first magnet with first sampling position sets up relatively, the second magnet with third sampling position sets up relatively, and first, second magnet is opposite to the polarity that corresponds sampling position.

As an improvement of the integrated injection molding magnet assembly suitable for the DCT gearbox, the magnet cap is internally provided with a cavity suitable for accommodating the first magnet and the second magnet.

As the improvement of the integrated injection molding magnet assembly suitable for the DCT gearbox, the corners in the cavity are wrapped by the plastic-coated material, and the plastic-coated plane is not higher than the plane of the corresponding magnet.

As the improvement of the integrated injection molding magnet assembly suitable for the DCT gearbox, the first sampling position and the second sampling position of the top surface of the magnet cap are respectively provided with a first hollow groove exposing the corresponding magnet.

As the improvement of the integrated injection molding magnet assembly suitable for the DCT, two first hollow-out grooves are formed at any sampling position, and the two first hollow-out grooves are symmetrically arranged.

As the improvement of the integrated injection molding magnet assembly suitable for the DCT gearbox, at least one side surface of the magnet cap is provided with at least one second hollowed-out groove.

As the improvement of the integrated injection molding magnet assembly suitable for the DCT gearbox, the inner side wall of the magnet cap is also provided with the buckles, the buckles are arranged at the positions, close to the two long edges, of the inner side wall of the magnet cap, the supporting surface of any buckle is a plane, and the reverse side of the buckle is an inclined plane with an arc angle.

As the improvement of the integrated injection molding magnet assembly suitable for the DCT, the buckles at any long edge are respectively arranged close to the second hollow groove.

As an improvement of the integrated injection molding magnet assembly suitable for the DCT gearbox, the inner side wall of the magnet cap is further provided with a guiding and limiting bump, and the guiding and limiting bump is arranged at a position, close to two short edges, of the inner side wall of the magnet cap.

As an improvement of the integrated injection molding magnet assembly suitable for the DCT gearbox, any one of the guiding limit lugs is provided with a plane suitable for an inclined plane and in transitional connection with the inclined plane.

Compared with the prior art, the invention has the beneficial effects that: the integrated injection molding magnet assembly suitable for the DCT gearbox is matched with a sampling position to optimally design the structure of the magnet cap, and is favorable for mounting and fixing the internal magnet.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is an exploded perspective view of one embodiment of an integrated injection molded magnet assembly for a DCT transmission according to the present invention;

fig. 2 is a perspective view illustrating an internal structure of the magnet cap of fig. 1.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 and 2, an embodiment of the invention provides an integrated injection molding magnet assembly suitable for a DCT transmission, which is used for enabling a magnetic field to move in an axial direction of a shifting fork during operation of the shifting fork, and the integrated injection molding magnet assembly suitable for the DCT transmission judges which signal point the DCT transmission is currently located according to an output signal value by collecting changes of the magnetic field, so as to identify a gear of the transmission.

Be applicable to DCT gearbox integral type injection moulding magnet subassembly includes: magnet cap 1 and combine first magnet 2 and second magnet 3 in magnet cap 1 through the mode of moulding by the package, this embodiment cooperation sampling position carries out optimal design to the structure of magnet cap 1, is favorable to the installation of inside magnet to be fixed.

Specifically, the top surface of the magnet cap 1 has a first sampling position 11, a second sampling position 12, and a third sampling position 13, which are sequentially arranged, and represent the shift position X, the neutral position, and the shift position XX, respectively. In order to structurally distinguish different sampling locations, the second sampling locations 12 are arranged recessed, the first sampling locations 11 and the third sampling locations 13 being distributed on both sides of the recess.

The first magnet 2 is arranged opposite to the first sampling position 11, the second magnet 3 is arranged opposite to the second sampling position 12, and the polarities of the first magnet 2 and the second magnet 3 facing to the corresponding sampling positions are opposite. In order to facilitate the assembly of the first magnet 2 and the second magnet 3 according to the required direction, one corner of any one magnet is designed to be a bevel edge, and is different from the other three corners, so that a mistake-proofing design is formed, and the correct installation in the assembly process is realized. Correspondingly, the magnet cap 1 is provided with a cavity adapted to receive the first and

second magnets

2, 3.

Many places set up groove structure on magnet cap 1 to reduce the use of package plastic material, realize lightweight design and can reduce material cost simultaneously, simultaneously through groove design, reduce the package and mould the structural deformation of process magnet cap 1 that the shrink of process because of the material arouses, make product structure size more stable.

In one embodiment, the first sampling position 11 and the second sampling position 12 on the top surface of the magnet cap 1 are respectively provided with a first hollow groove 14 exposing the corresponding magnet. At least one side surface of the magnet cap 1 is also provided with at least one second hollowed-out groove 15. Preferably, the number of the first hollow-out grooves 14 at any sampling position is two, and the two first hollow-out grooves 14 are symmetrically arranged. Two second hollowed-out grooves 15 are respectively arranged on two side surfaces of the magnet cap 1.

The benefit that so set up lies in, first fretwork recess 14 makes to leak magnet partly, and the purpose is the process of moulding plastics, carries out space orientation when putting into injection mold with magnet, ensures that magnet is in the spatial position of designing requirement in magnet cap 1. In the present embodiment, the shape of the first hollow groove 14 is not limited to a square shape, and a circular shape or other shapes can achieve this function. Meanwhile, the first hollowed-out groove 14 only leaks out of the plane of the magnet, and the edge of the magnet is wrapped in plastic, so that the magnet can be prevented from being damaged in the production process.

The embodiment of the integrated injection molding magnet assembly suitable for the DCT gearbox is required to be arranged on a boss structure of the shifting fork body through a connecting piece when being applied. The connecting piece is provided with a magnetic conduction plate which is suitable for being assembled with the magnet cap 1, so that the magnet assembly is conveniently assembled with the magnetic conduction plate in the DCT gearbox integrated injection molding mode, and a buckle 16 which is matched with the magnetic conduction plate and a guide limiting lug 17 which is suitable for being clamped into the magnetic conduction plate are further arranged on the inner side wall of the magnet cap 1.

Wherein, buckle 16 sets up in the position that 1 inside wall of magnet cap is close to two long limits, and the 16 holding surfaces of buckle of arbitrary side are the plane, uses with the cooperation of magnetic conduction board. The reverse side is an inclined plane with an arc angle, and the installation guide structure is convenient and applicable to the assembly of the DCT gearbox integrated injection molding magnet assembly on the magnetic conduction plate. In addition, considering that the magnet is easy to generate attraction with the magnetic conduction plate and is separated from the magnet cap 1, the corner position 18 in the cavity inside the magnet cap 1 is wrapped by the plastic-coated material, and the plastic-coated plane is not higher than the plane of the corresponding magnet, so that the function of preventing the magnet from falling off is realized, and the attachment of the magnetic conduction plate and the magnet is not interfered.

The guide limit lug 17 is arranged on the inner side wall of the magnet cap 1 near the two short sides, and the guide limit lug 17 on any side is provided with a plane suitable for an inclined plane and in transitional connection with the inclined plane. Therefore, when the magnetic conduction plate is clamped into the magnet cap 1, the inclined surface provides guidance to ensure that the magnetic conduction plate smoothly slides into a designed position. And then the plane in transitional connection with the inclined plane is matched with the end face of the magnetic conduction plate, so that the magnetic conduction plate is ensured to be stable and not to shake after being assembled, and further has a limiting effect.

In addition, straight sides are designed at the positions of the long side and the short side of the bottom of the inner cavity of the magnet cap 1, and the straight sides can be used as the reference sides of the external dimension of the magnet cap 1 to ensure the dimension of a product.

In conclusion, the magnet assembly suitable for the integral injection molding of the DCT gearbox is matched with the sampling position, the structure of the magnet cap is optimally designed, and the installation and the fixation of the internal magnet are facilitated.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a be applicable to DCT gearbox integral type injection moulding magnet subassembly which characterized in that, be applicable to DCT gearbox integral type injection moulding magnet subassembly includes: the magnet subassembly suitable for DCT gearbox integral type injection moulding includes: the magnet cap comprises a magnet cap and a first magnet and a second magnet which are combined in the magnet cap in a plastic-coated mode;

2. The injection molded magnet assembly of claim 1, wherein the magnet cap has a cavity therein adapted to receive the first and second magnets.

3. The injection-molded magnet assembly of claim 2, wherein the corners of the mold cavity are covered with a plastic-coated material, and the plastic-coated plane is not higher than the plane of the corresponding magnets.

4. The integrated injection molding magnet assembly suitable for the DCT gearbox as recited in claim 1, wherein the first sampling position and the second sampling position of the top surface of the magnet cap are respectively provided with a first hollowed-out groove exposing the corresponding magnet.

5. The integrated injection molding magnet assembly suitable for the DCT gearbox as recited in claim 4, wherein the number of the first hollowed-out grooves at any sampling position is two, and the two first hollowed-out grooves are symmetrically arranged.

6. The DCT gearbox integrated injection molding magnet assembly as recited in any one of claims 1, 4 and 5, wherein at least one second hollowed-out groove is further arranged on at least one side surface of the magnet cap.

7. The integrated injection molding magnet assembly suitable for the DCT gearbox as defined in claim 6, wherein the inner side wall of the magnet cap is further provided with a buckle, the buckle is arranged at a position close to the two long edges on the inner side wall of the magnet cap, a support surface of any buckle is a plane, and a reverse surface is an inclined surface with an arc angle.

8. The DCT gearbox integrated injection molded magnet assembly of claim 7, wherein the buckles at any one of the long sides are respectively arranged close to the second hollowed-out groove.

9. The integrated injection molding magnet assembly suitable for the DCT gearbox as recited in claim 1, wherein a guiding and limiting projection is further arranged on the inner side wall of the magnet cap, and the guiding and limiting projection is arranged at a position, close to two short sides, of the inner side wall of the magnet cap.

10. The injection molded magnet assembly of claim 9, wherein each of the guiding protrusions has a flat surface adapted to a slope and transition to the slope.