CN2835714Y

CN2835714Y - Gear Shifting device for mechanical transmission

Info

Publication number: CN2835714Y
Application number: CN 200520010205
Authority: CN
Inventors: 彭天河; 夏丽华; 唐满荣; 周朝东; 王传金
Original assignee: Chongqing Qingshan Industry Co Ltd
Current assignee: China Southern Industrial automobile Limited by Share Ltd
Priority date: 2005-10-28
Filing date: 2005-10-28
Publication date: 2006-11-08
Anticipated expiration: 2015-10-28

Abstract

The utility model discloses a gear shifting device for a mechanical speed changer, which comprises a gear shifting rotating arm, a transposition rotating arm, gear shifting shafts, a gear shifting swinging arm arranged on the gear shifting shaft and a gear shifting case sheathed on the gear shifting shaft. The utility model is characterized in that the gear shifting rotating arm (5) and the transposition rotating arm (6) are all arranged on the gear shifting shaft (1), the gear shifting shafts (1) of both sides of the gear shifting swing arm (3) are respectively sheathed with a horseshoe interlocking plate (7), and the gear shifting shaft (1) positioned between the gear shifting swing arm (3) and the gear shifting case (11) are sheathed with a cam return spring (9). The utility model causes the gear shifting rotating arm and the transposition rotating arm to be arranged on the gear shifting shaft, and the gear shifting shaft is also provided with an automatic return device after interlocking and transposition between gears, consequently, the utility model has the advantages of reasonable and compact structure, flexible, convenient and accurate gear shifting, no gear disengaging, no random gear and high transmission efficiency, at the same time, the speed changer has compact structure and stronger suitability, and the gear shifting quality and comfortable performance are enhanced.

Description

The gearshift of mechanical transmission

Technical field

The utility model relates to a kind of gearshift of car gear shifting device, particularly a kind of mechanical transmission.

Background technique

Existing vehicle manual gearshift comprises manual lever, transposition lever and linkage mechanism; Manually lever is realized the transposition engage a gear speed change of speed changer by linkage mechanism and inversion mechanism interlock, and its gear shift, transposition are controlled respectively.Because the member of linkage mechanism is many, complex structure, size chain length, synchronism interactive between each member is relatively poor, causes that the gear shift gap is big, efficient is low, shelves can occur disorderly in gearshift procedure, engage a gear is not in place even phenomenon out of supply, incur loss through delay shift time, make troubles to the operator.

Summary of the invention

The purpose of this utility model be to provide a kind of simple in structure, compact, gear shift is flexible, disorderly shelves, the gearshift of the mechanical transmission of trip stop not.

The purpose of this utility model is achieved in that a kind of gearshift of mechanical transmission, comprise: gear shifting rotary arm, transposition pivoted arm, shift shaft, be arranged at the gear shift swing arm on the shift shaft and be placed in gear shift case on the shift shaft, it is characterized in that: described gear shifting rotary arm, transposition pivoted arm all are arranged on the described shift shaft; Be with the horse shoe shaped interlock board on the described shift shaft of described gear shift swing arm both sides, the reverse shift fork of described gear shift swing arm stretches out from the opening of described horse shoe shaped interlock board; Be with the cam return spring on the shift shaft between described gear shift swing arm and the gear shift case, the two ends of this cam return spring are by the reverse gear locking cam and the reverse gear locking cam return spring seat fixed limit that are arranged on the described shift shaft.

The pivoted arm cover of above-mentioned gear shifting rotary arm one end is placed on the described shift shaft, and is connected with described shift shaft by bearing pin, the through hole opened on described pivoted arm cover and shift shaft; What described pivoted arm overlapped is provided with a circular groove in outer shroud week, be built-in with the contiguous block of a band groove at this circular groove, one end of described transposition pivoted arm is connected with the pivoted arm cover of described gear shifting rotary arm one end by the contiguous block of transpositing pin, band groove, and the middle part of described transposition pivoted arm also is connected with link arm on the casing that is fixed on speed changer by the rotating shaft that replaces.

Be with five reverse gear return springs on the shift shaft between above-mentioned gear shift case and the described reverse gear locking cam, the two ends of this five reverse gears return spring are by the fixed block fixed limit that is arranged on the described shift shaft, the purpose of She Zhiing is to realize the self-return after five grades and the transposition of reverse gear return spring like this, make return accurately, reliable; The utility model is with the low speed return spring on the described shift shaft in the described gear shift swing arm outside, this low speed return spring is by the fixed block fixed limit that is arranged on the described shift shaft, the purpose of She Zhiing is to realize the self-return after the transposition of low speed return spring like this, make one, the return of second gear accurately, reliable.

Above-mentioned gear shift swing arm, reverse gear locking cam and reverse gear locking cam return spring seat all are connected with described shift shaft by bearing pin.

Be provided with seal closure between above-mentioned gear shifting rotary arm and the described gear shift case; Be provided with oil sealing in the described gear shift case, the purpose that seal closure is set is to prevent that dust from entering in the gear shift case, and the purpose that oil sealing is set is to lubricate the component on the shift shaft.

Because the utility model all is arranged at gear shifting rotary arm, transposition pivoted arm on the described shift shaft, the car load selector device is realized the function of gear shift transposition by the drag-line control gear shifting rotary arm and the rotation of transposition pivoted arm, that is to say, drive the shift shaft rotation thereby drag-line rotates gear shifting rotary arm, the shift shaft rotating band is moved a grade swing arm rotation and is stirred the slip of reverse shift fork control synchro and realize gear shift; Thereby drag-line moves axially transposition pivoted arm rotation drive shift shaft slides the gear shift swing arm between the shelves fork, carry out the selection of gear, thereby realize replacing; And, be with the horse shoe shaped interlock board on the described shift shaft of gear shift swing arm both sides, like this purpose of She Zhiing be to realize bottom gear promptly one, two, three, the interlocking between the gear of fourth gear, prevent random shelves, out of supply; The utility model is being with the cam return spring on the shift shaft between described gear shift swing arm and the gear shift case, the purpose of She Zhiing is to realize the interlocking between five grades and reverse gear gear like this, prevents random shelves, out of supply.

To sum up, the utility model is compared with existing vehicle manual gearshift, to be located on the shift shaft together gear shifting rotary arm, transposition pivoted arm that gear shift, transposition are controlled respectively, and also increasing the interlocking between gear, the automatic resetting device after the transposition on this shift shaft, therefore, it is rational in infrastructure, compact, gear shift is flexible, accurately, not out of supply, disorderly shelves, transmission efficiency height, make also simultaneously that speed changer structure is small and exquisite a stronger suitability, the quality and the travelling comfort of gear shift are improved.

Description of drawings

Fig. 1 is the utility model embodiment's a structural representation;

Fig. 2 is the utility model embodiment's a outline drawing;

The A-A sectional view of Fig. 3 Fig. 2.

Embodiment

Referring to above-mentioned accompanying drawing, a kind of gearshift of mechanical transmission, comprise: gear shifting rotary arm 5, transposition pivoted arm 6, shift shaft 1, be arranged at the gear shift swing arm 3 on the shift shaft 1 and be placed in gear shift case 11 on the shift shaft 1, this gear shift case 11 is fixed on the casing of speed changer, it is characterized in that: described gear shifting rotary arm 5, transposition pivoted arm 6 all are arranged on the described shift shaft 1; Be with horse shoe shaped interlock board 7 on the described shift shaft 1 of described gear shift swing arm 3 both sides, the reverse shift fork 3a of described gear shift swing arm 3 stretches out from the opening of described horse shoe shaped interlock board 7; On the shift shaft 1 between described gear shift swing arm 3 and the gear shift case 11, be with cam return spring 9, the two ends of this cam return spring 9 are by the reverse gear locking cam 2 and reverse gear locking cam return spring seat 10 fixed limits that are arranged on the described shift shaft 1, and described gear shift swing arm 3, reverse gear locking cam 2 and reverse gear locking cam return spring seat 10 are connected with described shift shaft 1 by bearing

3b, 2b, 10b respectively.

The pivoted arm of above-mentioned gear shifting rotary arm 5 one ends cover 5a is placed on the described shift shaft 1, and is connected with described shift shaft 1 by bearing pin 15, the through hole opened on described pivoted arm cover 5a and shift shaft 1; Described pivoted arm cover 5a is provided with a circular groove in outer shroud week, this circular groove is made of the pivoted arm of the gear shifting rotary arm 5 that extends to pivoted arm cover 5a place and the annular boss 5b on the pivoted arm cover 5a, be built-in with the contiguous block 16 of a band groove at this circular groove, the one end riveted joint of described transposition pivoted arm 6 has a transpositing pin 12, this transpositing pin 12 places in the groove on the contiguous block 16, is connected with the pivoted arm cover 5a of described gear shifting rotary arm 5 one ends by transpositing pin 12, contiguous block 16; The middle part of described transposition pivoted arm 6 also is connected with link arm 14 on the casing that is fixed on speed changer by transposition rotating shaft 13, nut 18, lining 22, is with inside and outside dust-

proof cover

23,24 outside described transposition rotating shaft 13.

Be with five reverse gear return springs 4 on the shift shaft 1 between above-mentioned gear shift case 11 and the described reverse gear locking cam 2, the two ends of this five reverse gears return spring 4 are by fixed block 19 fixed limits that are arranged on the described shift shaft 1; Be with low speed return spring 8 on the described shift shaft 1 in described gear shift swing arm 3 outsides, this low speed return spring 8 is by fixed block 20 fixed limits that are arranged on the described shift shaft 1.

Be provided with seal closure 17 between above-mentioned gear shifting rotary arm 5 and the described gear shift case 11; Be provided with oil sealing 21 in the described gear shift case 11

The utility model embodiment's working procedure is:

In the time of one grade, selector device clockwise rotates transposition pivoted arm 6 by drag-line, thereby shift shaft 1 is moved down, and carries out gear and selects, and realizes transposition; Control gear shifting rotary arm 5 simultaneously shift shaft 1 clockwise rotated, thereby make gear shift swing arm 3 rotating bands move a grade shift fork 3a, so control one, the second gear synchronizer slides, and realizes one grade purpose.

During second gear, selector device clockwise rotates transposition pivoted arm 6 by drag-line, thereby shift shaft 1 is moved down, and carries out gear and selects, and realizes transposition; Control gear shifting rotary arm 5 simultaneously shift shaft 1 rotated counterclockwise, thereby make gear shift swing arm 3 rotating bands move a grade shift fork 3a, so control one, the second gear synchronizer slides, and realizes the purpose of second gear.

During third gear, selector device clockwise rotates shift shaft 1 by drag-line control gear shifting rotary arm 5, thereby makes gear shift swing arm 3 rotating bands move a grade shift fork 3a, so control three, the fourth gear synchronizer slides, and realizes the purpose of third gear.

During fourth gear, selector device rotates counterclockwise shift shaft 1 by drag-line control gear shifting rotary arm 5, thereby makes gear shift swing arm 3 rotating bands move a grade shift fork 3a, so control three, the fourth gear synchronizer slides, and realizes the purpose of fourth gear.

In the time of five grades, selector device rotates counterclockwise transposition pivoted arm 6 by drag-line, thereby shift shaft 1 is moved down, and carries out gear and selects, and realizes transposition; Control gear shifting rotary arm 5 simultaneously shift shaft 1 is clockwise rotated, thereby make gear shift swing arm 3 rotating bands move a grade shift fork 3a, and then the slip of control Five-gear synchronizer, realize five grades purpose.

During reverse gear, selector device rotates counterclockwise transposition pivoted arm 6 by drag-line, thereby shift shaft 1 is moved down, and carries out gear and selects, and realizes transposition; Control gear shifting rotary arm 5 simultaneously shift shaft 1 is rotated counterclockwise, thereby make gear shift swing arm 3 rotating bands move a grade shift fork 3a, and then the control reverse gear slides the purpose of realization reverse gear.

Claims

1, a kind of gearshift of mechanical transmission, comprise: gear shifting rotary arm (5), transposition pivoted arm (6), shift shaft (1), be arranged at the gear shift swing arm (3) on the shift shaft (1) and be placed in gear shift case (11) on the shift shaft (1), it is characterized in that: described gear shifting rotary arm (5), the pivoted arm (6) that replaces all are arranged on the described shift shaft (1); Be with horse shoe shaped interlock board (7) on the described shift shaft (1) of described gear shift swing arm (3) both sides, the reverse shift fork (3a) of described gear shift swing arm (3) stretches out from the opening of described horse shoe shaped interlock board (7); Be positioned on the shift shaft (1) between described gear shift swing arm (3) and the gear shift case (11) and be with cam return spring (9), the two ends of this cam return spring (9) are by the reverse gear locking cam (2) and reverse gear locking cam return spring seat (10) fixed limit that are arranged on the described shift shaft (1).

2, the gearshift of mechanical transmission as claimed in claim 1, it is characterized in that: the pivoted arm cover (5a) of described gear shifting rotary arm (5) one ends is placed on the described shift shaft (1), and is connected with described shift shaft (1) by bearing pin (15), the through hole opened on described pivoted arm cover (5a) and shift shaft (1); The outer shroud week of described pivoted arm cover (5a) is provided with a circular groove, be built-in with the contiguous block (16) of a band groove at this circular groove, one end of described transposition pivoted arm (6) is connected with the pivoted arm cover (5a) of described gear shifting rotary arm (5) one ends by the contiguous block (16) of transpositing pin (12), band groove, and the middle part of described transposition pivoted arm (6) also is connected with link arm (14) on the casing that is fixed on speed changer by the rotating shaft (13) that replaces.

3, the gearshift of mechanical transmission as claimed in claim 1 or 2, it is characterized in that: be with five reverse gear return springs (4) on the shift shaft (1) between described gear shift case (11) and the described reverse gear locking cam (2), the two ends of this five reverse gears return spring (4) are by fixed block (19) fixed limit that is arranged on the described shift shaft (1); Be with low speed return spring (8) on the described shift shaft (1) in described gear shift swing arm (3) outside, this low speed return spring (8) is by fixed block (20) fixed limit that is arranged on the described shift shaft (1).

4, the gearshift of mechanical transmission as claimed in claim 1 is characterized in that: described gear shift swing arm (3), reverse gear locking cam (2) and reverse gear locking cam return spring seat (10) all are connected with described shift shaft (1) by bearing pin.

5, the gearshift of mechanical transmission as claimed in claim 1 is characterized in that: be provided with seal closure (17) between described gear shifting rotary arm (5) and the described gear shift case (11); Be provided with oil sealing (21) in the described gear shift case (11).