CN214146556U - Multimode case parking braking mechanism - Google Patents
Multimode case parking braking mechanism Download PDFInfo
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- CN214146556U CN214146556U CN202022779026.4U CN202022779026U CN214146556U CN 214146556 U CN214146556 U CN 214146556U CN 202022779026 U CN202022779026 U CN 202022779026U CN 214146556 U CN214146556 U CN 214146556U
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- motor shaft
- parking
- sector plate
- pawl
- cam
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Abstract
The utility model discloses a multimode case parking arrestment mechanism, stopper include bottom fixed part and top semicircular groove, semicircular groove and cam cooperation, motor shaft top and sector plate fixed connection, be provided with foraminiferous base on the box, the motor shaft is pegged graft in foraminiferous base, and the motor shaft middle part is provided with the slot, and circlip and gasket are with motor shaft and foraminiferous base axial positioning, be provided with semicircle opening and dog on the sector plate, the angle that semicircle opening and dog interval were set for, the sector plate side is provided with the locking assembly; the locking assembly is in a round rod shape and comprises marbles, grid stop rods and fixing bolts, the rear part of the locking assembly is arranged on the box body through the fixing bolts, and the marbles are matched with the semicircular openings of the sector plates; when the sector plate rotates, the marble can rebound to loosen the semicircular opening; the check bar of the locking assembly interferes with the check block, so that the excessive rotation of the sector plate can be limited. The utility model discloses occupation space is littleer, and the structure is more compact, and it is more convenient to assemble simultaneously, improves machining efficiency.
Description
Technical Field
The utility model belongs to heavy truck and spare part field thereof, concretely relates to multimode case parking arrestment mechanism.
Background
The multi-mode box is a special gearbox for hybrid power, adopts a parallel shaft layout, integrates or is provided with three power sources of an engine, a motor and a generator, the internal part of the hybrid gearbox is connected with the engine to realize multi-gear switching, and the connection between the generator and the motor can be multi-gear or single gear. The parking brake mechanism, also called a parking brake, is used for stabilizing the vehicle after the vehicle is stopped stably, and avoids accidents caused by vehicle sliding when the vehicle is stopped on a slope road surface. Its structure features that the rear wheel is locked to prevent the vehicle from sliding and moving.
The installation form of the current typical multi-mode box parking brake mechanism in the transmission is shown in the attached drawing 1 of the specification, the detailed structure is shown in the attached drawing 2 of the specification, the occupied space of a plate spring, a limiting block and the like is too large, and the number of parts is large. Meanwhile, the motor shaft is positioned by the cotter pin, the sector plate and the village sleeve are welded together, the cotter pin is fixedly connected with the motor shaft, positioning is needed by a tool during assembly, and the mounting efficiency is low.
SUMMERY OF THE UTILITY MODEL
Not enough to the above-mentioned that prior art exists, the utility model aims at solving current multimode case parking braking mechanism occupation space too big, spare part is more in quantity, installs comparatively loaded down with trivial details problem.
In order to achieve the purpose, the utility model provides a multimode case parking braking mechanism, including box, motor shaft, sector plate, push rod, parking pawl, return torsional spring, parking ratchet, stopper, compression spring, cam, pawl axle, the motor shaft drives sector plate and rotates, push-and-pull push rod horizontal motion, and the cam is installed to the push rod front end, installs compression spring between cam and the push rod middle part; the parking device comprises a limiting block, a cam, a parking pawl, a pawl shaft, a push rod, a cam, a spring and a spring; one end of the return torsion spring is in contact with the upper part of the parking pawl, and can drive the parking pawl to reset; the head of the parking pawl can be meshed with the parking ratchet wheel under the driving of the cam to limit the rotation of the parking ratchet wheel, when the cam retracts, the return torsion spring drives the parking pawl to be disengaged from the parking ratchet wheel,
the limiting block comprises a bottom fixing part and a top semicircular groove, the semicircular groove is matched with the cam,
the top of the motor shaft is fixedly connected with the sector plate, the box body is provided with a perforated base, the motor shaft is inserted in the perforated base, the middle part of the motor shaft is provided with a groove, the motor shaft and the perforated base are axially positioned by the elastic retainer ring and the gasket,
the fan-shaped plate is provided with a semicircular opening and a stop block, the semicircular opening and the stop block are arranged at intervals of a set angle, and the side surface of the fan-shaped plate is provided with a locking assembly;
the locking assembly is in a round rod shape and comprises marbles, grid stop rods and fixing bolts, the rear part of the locking assembly is arranged on the box body through the fixing bolts, and the marbles are matched with the semicircular openings of the sector plates; when the sector plate rotates, the marble can rebound to loosen the semicircular opening; the check bar of the locking assembly interferes with the check block, so that the excessive rotation of the sector plate can be limited.
Furthermore, the fixing part of the limiting block is fixed on the box body through two bolts, and the fixing part is provided with a positioning hole and is positioned with the box body through a positioning pin.
Furthermore, two arc surfaces with different diameters are arranged in the semicircular groove of the limiting block.
Further, the lower part of the motor shaft is triangular.
Further, the top of the motor shaft is in cold fit or welded with the sector plate.
Furthermore, a bush is sleeved at the shaft part of the motor between the fan-shaped plate and the base with the hole.
The utility model has the advantages that:
1. the multi-mould-box parking braking mechanism of the utility model improves the limiting block and the execution unit, removes the plate spring and the limiting shaft with larger volume, simplifies the structure of the sector plate, is matched with the locking assembly, carries out soft limiting and hard limiting, reduces the number of parts, occupies smaller space, has more compact structure and has cost and space advantages;
2. the utility model discloses cancelled the split pin location, the motor shaft adopts gasket, jump ring and bush axial positioning, and the motor shaft welds as an organic wholely with the sector plate, and the structure is more stable, and it is more convenient to assemble, improves machining efficiency.
Drawings
Fig. 1 is a structural view illustrating a conventional parking brake mechanism of the related art installed in a housing;
fig. 2 is an enlarged perspective view and a front view of the prior art parking brake mechanism in the background art;
fig. 3 is a schematic structural view of the multi-mold-box parking brake mechanism of the present invention installed in the box body;
fig. 4 is an enlarged schematic perspective view of the multi-mold-box parking brake mechanism of the present invention;
fig. 5 is an enlarged schematic top view of the multi-mold parking brake mechanism of the present invention;
FIG. 6 is an enlarged schematic view of portion A of FIG. 4;
fig. 7 is an enlarged schematic view of a portion B of fig. 5.
In the figure: 1. a box body; 2. a motor shaft; 3. a push rod; 4. a parking pawl; 5. a return torsion spring; 6. a parking ratchet wheel; 7. a locking assembly; 701. a marble; 702. a check rod; 703. fixing the bolt; 8. a sector plate; 801. a stopper; 9. a gasket; 10. a compression spring; 11. a limiting block; 12. a cam; 13. a pawl shaft; 14. a bushing.
Detailed Description
The following detailed description of the present invention will be made in conjunction with the accompanying drawings and specific embodiments.
As shown in fig. 3, the multi-mode-box parking brake mechanism comprises a box body 1, a motor shaft 2, a sector plate 8, a push rod 3, a parking pawl 4, a return torsion spring 5, a parking ratchet wheel 6, a limiting block 11, a compression spring 10, a cam 12 and a pawl shaft 13, wherein the motor shaft 2 drives the sector plate 8 to rotate, the push rod 3 is pushed and pulled to move horizontally, the cam 12 is installed at the front end of the push rod 3, and the compression spring 10 is installed between the cam 12 and the middle part of the push rod 3; the push rod 3 can move on the limiting block 11, the cam 12 drives the parking pawl 4 to rotate, the parking pawl 4 is hinged on a pawl shaft 13, and the pawl shaft 13 is fixedly connected with a return torsion spring 5; one end of the return torsion spring 5 is in contact with the upper part of the parking pawl 4 and can drive the parking pawl 4 to return; the head of the parking pawl 4 can be meshed with the parking ratchet wheel 6 under the driving of the cam 12 to limit the rotation of the parking ratchet wheel 6, when the cam 12 retracts, the return torsion spring 5 drives the parking pawl 4 to be disengaged from the parking ratchet wheel 6,
as shown in fig. 4 and 6, the limiting block 11 comprises a bottom fixing portion and a top semicircular groove, the semicircular groove is matched with the cam 12, the top of the motor shaft 2 is fixedly connected with the sector plate 8, the box body 1 is provided with a perforated base, the motor shaft 2 is inserted into the perforated base, the middle of the motor shaft 2 is provided with a groove, the motor shaft 2 and the perforated base are axially positioned by the elastic retainer ring and the gasket 9,
as shown in fig. 5 and 7, a semicircular notch and a stopper 801 are arranged on the sector plate 8, the semicircular notch and the stopper 801 are spaced at a set angle, and a locking assembly 7 is arranged on the side surface of the sector plate 8;
the locking assembly 7 is in a round rod shape and comprises a marble 701, a grid stop lever 702 and a fixing bolt 703, the rear part of the locking assembly is arranged on the box body 1 through the fixing bolt 703, and the marble 701 is matched with a semicircular notch of the sector plate 8; when the sector plate 8 rotates, the marble 701 can rebound to loosen the semicircular opening; the stop lever 702 of the lock assembly 7 interferes with the stop 801 to restrict the excessive rotation of the sector plate 8.
In practical application, the fixing portion of the limiting block 11 is fixed on the box body 1 through two bolts, and the fixing portion is provided with a positioning hole and is positioned with the box body 1 through a positioning pin.
In practical application, two arc surfaces with different diameters are arranged in the semicircular groove of the limiting block 11.
In practical application, the lower part of the motor shaft 2 is triangular.
In practical application, the top of the motor shaft 2 is cold-matched or welded with the sector plate 8.
In practical application, a bush 14 is sleeved on the rod part of the motor shaft 2 between the sector plate 8 and the base with the hole.
The utility model discloses a theory of operation:
the utility model discloses simplify stopper 11's structure, reduced and taken the volume. Simultaneously, the sector plate 8 is fixedly connected with the motor shaft into a whole and then is installed in the gearbox box body 1, and compared with the traditional mode of installing by using a positioning pin, the assembly is more convenient. The traditional mode adopts an elastic plate spring, and the front part of the plate spring is provided with a ball with a structure having requirements for soft limiting; and a limiting shaft is arranged on the side surface of the sector plate 8 for hard limiting. The utility model cancels the plate spring and the spacing shaft, and adopts the locking assembly 7 which is positioned at the same horizontal plane with the sector plate 8 to carry out soft and hard spacing. Wherein, the marble 701 that can kick-back carries out soft spacing with the semicircle opening, and dog 801 and check stop lever 702 carry out hard spacing, and the structure is simpler, has saved spare part.
In summary, the following steps: the utility model removes the plate spring and the limiting shaft with larger volume, simplifies the structure of the sector plate, is matched with the locking assembly to carry out soft limiting and hard limiting, reduces the number of parts, occupies smaller space, has more compact structure and has cost and space advantages; meanwhile, the assembly is more convenient, and the processing efficiency is improved.
The basic principle, the main features and the advantages of the present invention have been described. It should be understood by those skilled in the art that the foregoing embodiments are merely illustrative of the technical concepts and features of the present invention, and the purpose of the present invention is to provide a person skilled in the art with the ability to understand the contents of the present invention and implement the same, and not to limit the scope of the present invention.
Claims (6)
1. A multi-mode-box parking braking mechanism comprises a box body (1), a motor shaft (2), a sector plate (8), a push rod (3), a parking pawl (4), a return torsion spring (5), a parking ratchet wheel (6), a limiting block (11), a compression spring (10), a cam (12) and a pawl shaft (13), wherein the motor shaft (2) drives the sector plate (8) to rotate, the push-pull push rod (3) moves horizontally, the front end of the push rod (3) is provided with the cam (12), and the compression spring (10) is arranged between the cam (12) and the middle part of the push rod (3); the push rod (3) can move on the limiting block (11), the cam (12) drives the parking pawl (4) to rotate, the parking pawl (4) is hinged on a pawl shaft (13), and the pawl shaft (13) is fixedly connected with a return torsion spring (5); one end of the return torsion spring (5) is in contact with the upper part of the parking pawl (4) and can drive the parking pawl (4) to return; the head of the parking pawl (4) can be meshed with the parking ratchet wheel (6) under the driving of the cam (12) to limit the rotation of the parking ratchet wheel (6), when the cam (12) retracts, the return torsion spring (5) drives the parking pawl (4) to be disengaged from the parking ratchet wheel (6),
the method is characterized in that: the limiting block (11) comprises a bottom fixing part and a top semicircular groove, the semicircular groove is matched with the cam (12),
the top of the motor shaft (2) is fixedly connected with the sector plate (8), the box body (1) is provided with a perforated base, the motor shaft (2) is inserted in the perforated base, the middle part of the motor shaft (2) is provided with a groove, the motor shaft (2) and the perforated base are axially positioned by an elastic retaining ring and a gasket (9),
the fan-shaped plate (8) is provided with a semicircular opening and a stop block (801), the semicircular opening and the stop block (801) are arranged at intervals of set angles, and the side surface of the fan-shaped plate (8) is provided with a locking assembly (7);
the locking assembly (7) is in a round rod shape and comprises marbles (701), a check rod (702) and a fixing bolt (703), the rear part of the locking assembly is arranged on the box body (1) through the fixing bolt (703), and the marbles (701) are matched with semicircular openings of the sector plates (8); when the sector plate (8) rotates, the marble (701) can rebound to loosen the semicircular opening; the stop lever (702) of the locking assembly (7) interferes with the stop (801) to limit the excessive rotation of the sector plate (8).
2. The multi-mode-box parking brake mechanism according to claim 1, characterized in that: the fixing part of the limiting block (11) is fixed on the box body (1) through two bolts, and the fixing part is provided with a positioning hole and is positioned with the box body (1) through a positioning pin.
3. The multi-mode-box parking brake mechanism according to claim 1 or 2, characterized in that: two arc surfaces with different diameters are arranged in the semicircular groove of the limiting block (11).
4. The multi-mode-box parking brake mechanism according to claim 1, characterized in that: the lower part of the motor shaft (2) is triangular.
5. The multimode case parking brake mechanism according to claim 1 or 4, characterized in that: the top of the motor shaft (2) is in cold fit or welded with the sector plate (8).
6. The multi-mode-box parking brake mechanism according to claim 1, characterized in that: and a bush (14) is sleeved at the rod part of the motor shaft (2) between the fan-shaped plate (8) and the base with the hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022779026.4U CN214146556U (en) | 2020-11-26 | 2020-11-26 | Multimode case parking braking mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022779026.4U CN214146556U (en) | 2020-11-26 | 2020-11-26 | Multimode case parking braking mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214146556U true CN214146556U (en) | 2021-09-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022779026.4U Active CN214146556U (en) | 2020-11-26 | 2020-11-26 | Multimode case parking braking mechanism |
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| Country | Link |
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| CN (1) | CN214146556U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116174720A (en) * | 2022-11-08 | 2023-05-30 | 山东鲁银新材料科技有限公司 | Powder metallurgy parking limiting block and production method thereof |
| CN116174720B (en) * | 2022-11-08 | 2024-10-29 | 山东鲁银新材料科技有限公司 | Powder metallurgy parking limiting block and production method thereof |
-
2020
- 2020-11-26 CN CN202022779026.4U patent/CN214146556U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116174720A (en) * | 2022-11-08 | 2023-05-30 | 山东鲁银新材料科技有限公司 | Powder metallurgy parking limiting block and production method thereof |
| CN116174720B (en) * | 2022-11-08 | 2024-10-29 | 山东鲁银新材料科技有限公司 | Powder metallurgy parking limiting block and production method thereof |
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