CN115435081B

CN115435081B - Transmission shift fork assembly and vehicle with same

Info

Publication number: CN115435081B
Application number: CN202211035030.7A
Authority: CN
Inventors: 师磊; 严鉴铂; 刘义; 李超; 张国英; 温青建; 许明中
Original assignee: Xian Fast Auto Drive Co Ltd
Current assignee: Xian Fast Auto Drive Co Ltd
Priority date: 2022-08-26
Filing date: 2022-08-26
Publication date: 2023-09-08
Anticipated expiration: 2042-08-26
Also published as: CN115435081A

Abstract

The invention discloses a transmission shift fork assembly and a vehicle with the same, which belong to the technical field of transmission shift fork mechanism assembly, and comprise a first fork component, a second fork component and a fork shaft, wherein the first fork component is formed by sequentially fixedly connecting a first plectrum, a first connecting arm, a first sleeve and a first fork; the second shifting fork assembly is formed by sequentially fixedly connecting a second shifting sheet, a second connecting arm, a second sleeve and a second shifting fork; the middle section of the top of the first sleeve is an open slot, the middle section of the bottom of the second sleeve is an open slot, and the first sleeve and the second sleeve are mutually nested and arranged on the shifting fork shaft through the open slot; the technical problems that the shifting fork and the shifting fork shaft of the transmission are connected by elastic pins or bolts generally, the shifting fork and the shifting fork shaft are matched one by one, so that more internal space is occupied and the weight is large are solved.

Description

Transmission shift fork assembly and vehicle with same

Technical Field

The invention belongs to the technical field of assembly of a transmission shifting fork mechanism, and particularly relates to a transmission shifting fork assembly and a vehicle with the same.

Background

As an important part in an automobile transmission system, an automobile transmission gradually tends to be compact and light, and the design structure and the quality of the automobile transmission have great influence on the performance of the whole automobile. At present, the transmission mainly shifts gears through shifting blocks to shift gears, wherein the shifting blocks are fixedly connected with shifting fork shafts, the shifting fork shafts are fixedly connected with shifting forks, the shifting forks act on a synchronizer structure, and the force of the shifting blocks is transmitted to the shifting forks through the shifting fork shafts, so that the shifting actions are transmitted to the synchronizer to further realize gear shifting.

In the prior art, the shifting fork and the shifting fork shaft are usually connected by adopting elastic pins or bolts, so that the transmission is provided with a plurality of shifting forks to be matched with a plurality of shifting fork shafts, the arrangement is complex, occupies more internal space and is not beneficial to the weight reduction of the automobile.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention aims to provide a gear shifting fork assembly of a speed changer and a vehicle with the gear shifting fork assembly, so as to solve the technical problems that the shifting fork of the speed changer and a shifting fork shaft are connected by adopting elastic pins or bolts, the shifting fork and the shifting fork shaft are required to be matched one by one, so that more internal space is occupied, and the weight is large.

In order to achieve the above purpose, the invention is realized by adopting the following technical scheme:

a transmission shifting fork assembly comprises a first shifting fork component, a second shifting fork component and a shifting fork shaft, wherein the first shifting fork component is formed by sequentially fixedly connecting a first shifting plate, a first connecting arm, a first sleeve and a first shifting fork; the second shifting fork assembly is formed by sequentially fixedly connecting a second shifting sheet, a second connecting arm, a second sleeve and a second shifting fork; the middle section at the top of the first sleeve is an open slot, the middle section at the bottom of the second sleeve is an open slot, and the first sleeve and the second sleeve are mutually nested and installed on the shifting fork shaft through the open slot.

Preferably, the first shifting fork assembly is formed by sequentially welding a first shifting plate, a first connecting arm, a first sleeve and a first shifting fork; the second shifting fork assembly is formed by sequentially welding a second shifting plate, a second connecting arm, a second sleeve and a second shifting fork assembly.

Preferably, the outer two sections of the first sleeve are respectively provided with a truncated sleeve, the outer two sections of the second sleeve are respectively provided with a truncated sleeve, and the two truncated sleeves of the first sleeve and the second sleeve are mutually nested and installed on the shifting fork shaft.

Preferably, the cross-sectional shape of the open slot of the first sleeve and the cross-sectional shape of the open slot of the second sleeve are spliced into a complete circle.

Preferably, the cross-sectional shape of the open slot of the first sleeve is semicircular, and the cross-sectional shape of the open slot of the second sleeve is semicircular.

Preferably, both ends of the open slot of the first sleeve are provided with limiting inclined planes, and both ends of the open slot of the second sleeve are provided with limiting inclined planes.

Preferably, the first sleeve and the second sleeve have a cross-sectional diameter of the same size.

The invention also discloses a vehicle with the transmission gear shifting fork assembly.

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

the invention discloses a transmission shifting fork assembly and a vehicle with the same, wherein the middle section of the top of a first sleeve is an open slot, the middle section of the bottom of a second sleeve is an open slot, the first sleeve and the second sleeve are mutually nested and arranged on a shifting fork shaft through the open slot, and the two shifting fork assemblies commonly use one shifting fork shaft, so that the internal structure is simplified, and the effect of reducing weight is achieved; the mounting mode of nesting the first sleeve and the second sleeve enables the two shifting fork components to realize axial gear-shifting limit, so that the gear shifting accuracy is improved, and the gear shifting reliability is ensured; the top intermediate section of first telescopic is the open slot, the bottom intermediate section of second telescopic is the open slot, and the frictional force between sleeve and the driving fork axle has been reduced in the setting of open slot.

Further, both ends of the first telescopic open slot are all processed with spacing inclined planes, and both ends of the second telescopic open slot are all processed with spacing inclined planes, realize that the gear is spacing, improve the degree of accuracy of shifting, guarantee its reliability of shifting.

Drawings

FIG. 1 is a schematic diagram of a fork assembly according to the present invention;

FIG. 2 is a first perspective view of a first fork assembly according to the present invention;

FIG. 3 is a second view structural schematic diagram of the first fork assembly of the present invention;

FIG. 4 is a first perspective view of a second fork assembly according to the present invention;

FIG. 5 is a second perspective view of a second fork assembly according to the present invention;

FIG. 6 is a third perspective view of the second fork assembly of the present invention;

FIG. 7 is a schematic cross-sectional view of a fork assembly according to the present invention;

fig. 8 is a schematic structural view of a shift head.

Wherein: 1-a first fork assembly; 2-a second fork assembly; 3-a fork shaft; 4-shifting a shifting head; 11-a first plectrum; 12-a first fork; 13-a first connecting arm; 14-a first sleeve; 15-a first limiting inclined plane; 16-a second limiting inclined plane; 21-a second plectrum; 22-a second sleeve; 23-a second fork; 24-a second connecting arm; 25-a third limiting inclined plane; 26-fourth limiting inclined plane; 41-a first shift head; 42-a second shift head; 43-third shift head.

Detailed Description

In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The invention is described in further detail below with reference to the attached drawing figures:

referring to fig. 1, the invention discloses a transmission gear shifting assembly, which comprises a first shifting fork assembly 1, a second shifting fork assembly 2 and a shifting fork shaft 3, wherein the first shifting fork assembly 1 and the second shifting fork assembly 2 are mutually nested and installed on the shifting fork shaft 3.

Referring to fig. 2 and 3, the first fork assembly 1 includes a first fork 11, a first fork 12, a first connecting arm 13, and a first sleeve 14; the first shifting sheet 11, the first shifting fork 12, the first connecting arm 13 and the first sleeve 14 are welded into a whole, the middle section of the top of the first sleeve 14 is designed into an open slot, the two sections of the outer side are respectively a truncated sleeve, and the two ends of the open slot are respectively provided with a first limiting inclined plane 15 and a second limiting inclined plane 16.

Referring to fig. 4 to 6, the second fork assembly 2 includes a second fork 21, a second sleeve 22, a second fork 23, and a second connecting arm 24; the second shifting piece 21, the second sleeve 22, the second shifting fork 23 and the second connecting arm 24 are welded into a whole, the middle section of the bottom of the second sleeve 22 is designed into an open slot, the two outer sections are respectively truncated sleeves, and the two ends of the open slot are respectively provided with a third limiting inclined plane 25 and a fourth limiting inclined plane 26.

Referring to fig. 7, the first sleeve 14 and the second sleeve 22 are nested with each other on the shift rail 3 through the open slot; the second sleeve 22 is embedded on the first sleeve 14 in a staggered way, and the shifting fork shaft 3 passes through a complete sleeve formed by the second sleeve 22 and the first sleeve 14, so that the installation can be completed; the traditional long sleeve is changed into two truncated sleeves, and the two truncated sleeves are matched with the shifting fork shaft, so that the shifting fork axially moves more stably in the gear engaging process, and the friction force between the sleeve and the shifting fork shaft 3 is reduced; the first sleeve 14 and the second sleeve 22 are mutually nested and arranged on the shifting fork shaft 3, and can realize axial gear-shifting limit, so that the gear shifting accuracy is improved, and the gear shifting reliability is ensured.

Referring to fig. 8, the shift knob 4 includes a first knob 41, a second knob 42, and a third knob 43, wherein the second knob 42 is located at a middle position and has the longest length.

Limiting inclined planes are processed at two ends of the first sleeve 14 and the second sleeve 22, so that gear shifting accuracy is improved, and gear shifting reliability is guaranteed.

The catch arrangement of the first catch 11 and the second catch 21 ensures that a gear interlock can be achieved between each other during shifting.

Working principle: when the transmission shifts gears, the gear shifting head 4 rotates under the action of the micro motor, and the gear shifting head 4 drives the gear shifting fork assembly to axially move under the cooperation of the first shifting piece 11 and the second shifting piece 21 to shift the synchronizer sliding sleeve to realize gear shifting. When the gear shifting head 4 is matched with the first shifting piece 11 and the second shifting piece 21, the gear selecting motor can realize the axial movement of a gear shifting shaft during working, so that gear selection is realized; when the gear shifting motor rotates, the gear shifting shaft is driven to rotate, the gear shifting head 4 is driven to rotate, at the moment, only the shifting sheet matched with the second shifting head 42 can realize axial movement, and then the synchronizer sliding sleeve is shifted to realize gear shifting, and the first shifting head 41 and the third shifting head 43 play a role in gear interlocking.

The invention also discloses a vehicle with the transmission shifting fork.

The above is only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited by this, and any modification made on the basis of the technical scheme according to the technical idea of the present invention falls within the protection scope of the claims of the present invention.

Claims

1. The transmission shifting fork assembly is characterized by comprising a first shifting fork component (1), a second shifting fork component (2) and a shifting fork shaft (3), wherein the first shifting fork component (1) is formed by sequentially fixedly connecting a first shifting sheet (11), a first connecting arm (13), a first sleeve (14) and a first shifting fork (12); the second shifting fork assembly (2) is formed by sequentially fixedly connecting a second shifting sheet (21), a second connecting arm (24), a second sleeve (22) and a second shifting fork (23); the middle section of the top of the first sleeve (14) is an open slot, the middle section of the bottom of the second sleeve (22) is an open slot, and the first sleeve (14) and the second sleeve (22) are mutually nested and arranged on the shifting fork shaft (3) through the open slot;

the cross section of the open slot of the first sleeve (14) and the cross section of the open slot of the second sleeve (22) are spliced into a complete circle; the cross section of the open slot of the first sleeve (14) is semicircular, and the cross section of the open slot of the second sleeve (22) is semicircular; limiting inclined planes are machined at two ends of an opening groove of the first sleeve (14), and limiting inclined planes are machined at two ends of an opening groove of the second sleeve (22).

2. A transmission shift fork assembly according to claim 1, wherein the first fork assembly (1) is formed by welding a first fork (11), a first connecting arm (13), a first sleeve (14) and a first fork (12) in sequence; the second shifting fork assembly (2) is formed by sequentially welding a second shifting sheet (21), a second connecting arm (24), a second sleeve (22) and a second shifting fork (23).

3. A transmission shift fork assembly according to claim 1, wherein the first sleeve (14) has a respective one of its outer ends and the second sleeve (22) has a respective one of its outer ends, the first sleeve (14) and the second sleeve (22) having respective ones of their respective two ends being nested in each other on the fork shaft (3).

4. A transmission shift fork assembly according to claim 1, wherein the first sleeve (14) is of uniform cross-sectional diameter dimension to the second sleeve (22).

5. A vehicle having a transmission shift fork assembly as claimed in any one of claims 1 to 4.