CN219827676U - Novel parking plunger limiting device - Google Patents
Novel parking plunger limiting device Download PDFInfo
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- CN219827676U CN219827676U CN202320204008.4U CN202320204008U CN219827676U CN 219827676 U CN219827676 U CN 219827676U CN 202320204008 U CN202320204008 U CN 202320204008U CN 219827676 U CN219827676 U CN 219827676U
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- parking
- gear
- plunger
- control rod
- pawl
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Abstract
The utility model discloses a novel parking plunger limiting device, wherein a parking control rod, a parking push rod, a parking pawl, a return spring and a parking gear are arranged in a gearbox body of a gearbox; when the parking control rod is reversed to the NP gear, the return spring drives the parking pawl to be separated from the parking gear, the limiting device is connected with the parking control rod and the parking push rod, the limiting device comprises a gear shifting tooth piece and an elastic plunger, one end of the gear shifting tooth piece is fixed to the parking control rod, the other end of the gear shifting tooth piece is hinged to the parking push rod through a supporting shaft, a P gear limiting hole and an NP gear limiting hole are formed in the gear shifting tooth piece, the elastic plunger is located below the gear shifting tooth piece and fixed to the box body, and when the parking control rod is located in the P gear, the elastic plunger is clamped to the P gear limiting hole; when the parking control lever is located in the NP gear, the elastic plunger is clamped to the NP gear limiting hole, limiting of the parking control lever is achieved, and stability in parking is improved.
Description
Technical Field
The utility model belongs to the technical field of automobile parking, and particularly relates to a novel parking plunger limiting device.
Background
The parking mechanism is an actuating mechanism for locking the transmission of the vehicle, and can effectively ensure that the vehicle is reliably parked on a flat ground and a ramp, and the vehicle cannot automatically slide under any condition. At present, an electronic parking driver is generally adopted in a parking mechanism of a vehicle to control the operation of a parking control lever so as to lock and unlock the parking mechanism.
When the parking mechanism of the vehicle is switched from the parking lock state to the unlock state (P to NP) or from the unlock state to the lock state (NP to P), the parking mechanism must be stably and reliably stopped in the P range or the NP range. In the use process of an actual vehicle, the vehicle is subjected to vibration, jolt and the like, the stability of connection between the parking control lever and the parking push rod is poor, and the parking mechanism is easily separated from the P gear or the NP gear, so that safety accidents are caused.
Disclosure of Invention
According to the novel parking plunger limiting device, the limiting device is arranged between the parking control rod and the parking push rod, when the parking control rod is in the P gear or the NP gear, the elastic plunger is clamped to the corresponding P gear limiting hole or the corresponding NP gear limiting hole, the gear shifting tooth piece is limited to rotate, the parking control rod and the parking push rod are in a fixed state, stability of the parking control rod in the P gear or the NP gear is improved, stability of the parking mechanism is further improved, the parking mechanism is prevented from being separated from the P gear or the NP gear, and parking safety is improved.
The utility model is realized by the following technical scheme:
a novel parking plunger limiting device is characterized in that a parking control rod, a parking push rod, a parking pawl, a return spring and a parking gear are arranged in a box body of a gearbox, and when the parking control rod positively rotates to a P gear, the parking push rod extrudes the parking pawl to be clamped to the parking gear; when the parking control rod is reversed to the NP gear, the return spring drives the parking pawl to be separated from the parking gear, the limiting device is connected with the parking control rod and the parking push rod, the limiting device comprises a gear shifting tooth piece and an elastic plunger, one end of the gear shifting tooth piece is fixed to the parking control rod, the other end of the gear shifting tooth piece is hinged to the parking push rod through a supporting shaft, a P gear limiting hole and an NP gear limiting hole are formed in the gear shifting tooth piece, the elastic plunger is located below the gear shifting tooth piece and fixed to the box body, and when the parking control rod is located in the P gear, the elastic plunger is clamped to the P gear limiting hole; when the parking control lever is located in the NP gear, the elastic plunger is clamped to the NP gear limiting hole, limiting fixation of the parking control lever is achieved, and stability in parking is improved.
Further, the elastic plunger comprises a plunger shell, a plunger spring, a spring support and a plunger head, wherein the plunger spring is fixed in the plunger shell, and the plunger head is connected with the plunger spring through the spring support so as to improve stability when the plunger head moves. The plunger head is provided with a clamping state extending into the P-gear limit hole or the NP-gear limit hole and a moving state pressed into the plunger shell.
Further, the required acting force of the plunger head extruded into the plunger shell is F, and when the parking control rod drives the gear shifting tooth piece to rotate, the pressure of the gear shifting tooth piece to the plunger head is larger than F, so that the plunger head can be extruded into the plunger shell when the gear shifting tooth piece rotates.
Further, the P-gear limit hole and the NP-gear limit hole are both round holes, the plunger head is spherical, and the diameter of the plunger head is larger than that of the P-gear limit hole and the NP-gear limit hole, so that the plunger head is prevented from penetrating through the P-gear limit hole or the NP-gear limit hole.
Further, the plunger spring has a tendency to drive the plunger head toward the shift blade so that the plunger head extends into the P-range limit hole and the NP-range limit hole.
Further, still be fixed with the guide block in the box, parking push rod slidable mounting is to the guide block, and the guide block restriction parking push rod only can slide in the horizontal direction, improves the stability when the parking push rod removes, helps the parking push rod to promote the parking pawl.
Further, one end of the parking pawl is mounted on the box through the pawl mounting shaft, the parking pawl can rotate around the pawl mounting shaft, the other end of the parking pawl is matched with the parking gear in a clamping mode, the return spring is sleeved on the pawl mounting shaft, two ends of the return spring are respectively abutted to the parking pawl and the box, and the return spring has a trend of driving the parking pawl to be separated from the parking gear so as to achieve parking unlocking.
Further, a parking driver is arranged at the bottom of the parking control rod, and the parking driver can drive the parking control rod to rotate to a P gear and an NP gear, so that the rotation of the parking control rod is realized.
Further, the box body is provided with a through hole matched with the parking control lever, and the box body plays a supporting role on the parking control lever so as to ensure the stability of the parking control lever during rotation.
Further, the parking gear is connected with a transmission shaft of the automobile, the parking gear and the transmission shaft synchronously rotate, and the rotation of the transmission shaft of the automobile is further limited by limiting the rotation of the parking gear, so that parking locking is realized.
Drawings
FIG. 1 is a schematic illustration of an exemplary embodiment of a novel park plunger stop device of the present utility model in a P-position;
FIG. 2 is a schematic illustration of an exemplary embodiment of the present utility model illustrating a novel park plunger stop in the NP range;
FIG. 3 is a schematic view illustrating an exemplary embodiment of a novel parking plunger stop apparatus in the P range according to the present utility model;
FIG. 4 is a schematic diagram illustrating an exemplary embodiment of a novel park plunger stop device in the NP range of the present utility model;
FIG. 5 is a schematic view illustrating the position of an exemplary embodiment of a novel parking plunger stop device of the present utility model in the P range;
FIG. 6 is a schematic view illustrating the position of an exemplary embodiment of a novel park plunger stop device in the NP range of the present utility model;
FIG. 7 is a cross-sectional view illustrating an exemplary embodiment of a novel park plunger stop of the present utility model;
FIG. 8 is a schematic diagram illustrating one exemplary embodiment of an elastomeric plunger according to the present utility model;
fig. 9 is a cross-sectional view illustrating an exemplary embodiment of a spring plunger according to the present utility model.
Reference numerals:
1. a case; 2. a park lever; 3. a parking pushrod; 4. a parking pawl; 5. a return spring; 6. a parking gear; 7. a limiting device; 71. a shift tooth piece; 711. a P-gear limiting hole; 712. NP keeps off spacing hole; 72. an elastic plunger; 721. a plunger housing; 722. a plunger spring; 723. a spring support; 724. a plunger head; 73. a support shaft; 8. a guide block; 9. the pawl mounts the shaft.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that, in the embodiments of the present utility model, terms such as left, right, up, down, front, and back are merely relative terms or references to a normal use state of a product, i.e. a traveling direction of the product, and should not be construed as limiting.
In addition, the dynamic terms such as "relative movement" in the embodiments of the present utility model include not only a change in position but also a movement in which a state is changed without a relative change in position such as rotation or rolling.
Finally, it is noted that when an element is referred to as being "on" or "disposed on" another element, it can be on the other element or intervening elements may also be present. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present.
As shown in fig. 1 to 9, a novel parking plunger limiting device is provided, wherein a parking control rod 2, a parking push rod 3, a parking pawl 4, a return spring 5 and a parking gear 6 are arranged in a box body 1 of a gearbox, and when the parking control rod 2 rotates forward to a P gear, the parking push rod 3 extrudes the parking pawl 4 to be clamped to the parking gear 6; when the parking control rod 2 is reversed to the NP gear, the return spring 5 drives the parking pawl 4 to be separated from the parking gear 6, the limiting device 7 is connected with the parking control rod 2 and the parking push rod 3, the limiting device 7 comprises a gear shifting tooth piece 71 and an elastic plunger 72, one end of the gear shifting tooth piece 71 is fixed to the parking control rod 2, the other end of the gear shifting tooth piece is hinged to the parking push rod 3 through a supporting shaft 73, a P gear limiting hole 711 and an NP gear limiting hole 712 are formed in the gear shifting tooth piece 71, the elastic plunger 72 is positioned below the gear shifting tooth piece 71 and fixed to the box body 1, and when the parking control rod 2 is positioned in the P gear, the elastic plunger 72 is clamped to the P gear limiting hole 711; when the parking control lever 2 is in the NP shift position, the elastic plunger 72 is clamped to the NP shift position limiting hole 712, so that the parking control lever 2 is limited and fixed, and the stability during parking is improved.
In one embodiment, the parking gear 6 is mounted on a drive shaft of the automobile, and parking lock of the automobile is achieved by restricting rotation of the parking gear 6. During parking operation, the parking driver drives the parking control rod 2 to rotate, and the gear shifting tooth piece 71 at the top of the parking control rod 2 rotates to drive the parking push rod 3 hinged with the gear shifting tooth piece 71 through the supporting shaft 73 to slide along the guide block 8 so as to extrude the parking pawl 4, and the parking pawl 4 is clamped to the parking gear 6 under the extrusion action of the parking push rod 3, so that locking of the parking gear 6 is realized. When the parking control lever 2 rotates to the P gear, the elastic plunger 72 is clamped to the P gear limiting hole 711 to realize clamping and fixing of the gear shifting tooth piece 71, so that the stability of the automobile in a parking locking state and the safety of the automobile in parking are improved.
When the parking operation is released, the parking driver drives the parking control rod 2 to reversely rotate to the NP gear, the gear shifting tooth piece 71 fixed to the top of the parking control rod 2 rotates to drive the parking push rod 3 hinged with the gear shifting tooth piece 71 through the supporting shaft 73 to move along the guide block 8 in the direction away from the parking pawl 4, the parking pawl 4 rotates around the pawl mounting shaft 9 under the action of the return spring 5 to be separated from the parking gear 6, the parking gear 6 is in a free state, and the automobile is released from the parking locking state. When the parking control lever 2 rotates to the NP gear, the elastic plunger 72 is clamped to the NP gear limiting hole 712 to realize clamping and fixing of the gear shifting tooth piece 71, so that the stability of the automobile in a parking releasing state and the safety of the automobile in the parking releasing state are improved.
Preferably, the elastic plunger 72 includes a plunger housing 721, a plunger spring 722, a spring holder 723, and a plunger head 724, the plunger spring 722 being fixed to the plunger housing 721, the plunger head 724 being connected to the plunger spring 722 through the spring holder 723 to improve stability when the plunger head 724 moves. The plunger head 724 has a locked state in which it extends into the P-stop limit hole 711 or the NP-stop limit hole 712 and a moved state in which it is pressed into the plunger housing 721.
In one embodiment, as the shift tooth plate 71 rotates, the plunger head 724 abuts the bottom of the shift tooth plate 71, and the plunger head 724 has a pressing force on the shift tooth plate 71 under the action of the plunger spring 722. When the gear shifting tooth piece 71 rotates to the parking control lever 2 is in the P gear or the NP gear, the plunger head 724 positioned in the plunger housing 721 moves upwards under the action of the plunger spring 722 to extend into the P gear limiting hole 711 or the NP gear limiting hole 712, so that the gear shifting tooth piece 71 is clamped and fixed, and the parking stability and safety are improved.
Preferably, the force required by the plunger head 724 to squeeze into the plunger housing 721 is F, and when the parking lever 2 drives the shift tooth plate 71 to rotate, the pressure of the shift tooth plate 71 to the plunger head 724 is greater than F, so as to ensure that the plunger head 724 can be squeezed into the plunger housing 721 when the shift tooth plate 71 rotates.
In one embodiment, after the plunger head 724 is snapped into the P-gear limit hole 711 or the NP-gear limit hole 712, the pressing force on the plunger head 724 when the shift tooth plate 71 rotates is greater than F. Therefore, the shift tooth piece 71 can press the plunger head 724 into the plunger housing 721 when rotated in the horizontal direction to achieve the normal shift operation of the shift tooth piece 71. It should be noted that, after the plunger head 724 is clamped to the P-gear limit hole 711 or the NP-gear limit hole 712, unless there is enough external force (an external force greater than F) to force the plunger spring 722 to compress and slide the plunger head 724 out of the P-gear limit hole 711 or the NP-gear limit hole 712, the gear shift tooth piece 71 will be stabilized at the parking position or the position when the parking state is released, so as to achieve the purpose of avoiding the parking lever 2 from being separated from the P-gear and the NP-gear position due to the vibration of the vehicle. In general, the automobile vibrates or jolts, so that the extrusion force of the gear shifting tooth piece 71 to the plunger head 724 is far smaller than F, and therefore, the elastic plunger 72 is adopted to limit and fix the gear shifting tooth piece 71, so that the stability of the automobile in a parking state and when the parking state is released can be improved.
Preferably, the P-gear limit hole 711 and the NP-gear limit hole 712 are both circular holes, the plunger head 724 is spherical, and the diameter of the plunger head 724 is larger than the diameters of the P-gear limit hole 711 and the NP-gear limit hole 712, so that the plunger head 724 is prevented from passing through the P-gear limit hole 711 or the NP-gear limit hole 712.
Preferably, the plunger spring 722 has a tendency to drive the plunger head 724 toward the shift tooth plate 71 such that the plunger head 724 extends into the P-stop limit hole 711 and the NP-stop limit hole 712.
Preferably, the guide block 8 is further fixed in the box body 1, the parking push rod 3 is slidably mounted to the guide block 8, the guide block 8 limits the parking push rod 3 to slide only in the horizontal direction, stability of the parking push rod 3 during movement is improved, and the parking push rod 3 is facilitated to push the parking pawl 4. The guide block 8 plays a role in supporting and limiting the parking push rod 3 and is used for limiting the moving direction of the parking push rod 3 and helping the parking push rod 3 to extrude the parking pawl 4.
Preferably, one end of the parking pawl 4 is mounted on the box 1 through a pawl mounting shaft 9, the parking pawl 4 can rotate around the pawl mounting shaft 9, the other end of the parking pawl 4 is matched with the parking gear 6 in a clamping mode, the return spring 5 is sleeved on the pawl mounting shaft 9, two ends of the return spring 5 are respectively abutted with the parking pawl 4 and the box 1, and the return spring 5 has a trend of driving the parking pawl 4 to be separated from the parking gear 6 so as to realize parking unlocking.
Preferably, a parking driver is installed at the bottom of the parking control lever 2, and the parking driver can drive the parking control lever 2 to rotate to a P gear and an NP gear, so that the rotation of the parking control lever 2 is realized.
Preferably, the box 1 is provided with a through hole matched with the parking control lever 2, and the box 1 plays a supporting role on the parking control lever 2 so as to ensure the stability of the parking control lever 2 during rotation.
Preferably, the parking gear 6 is connected with a transmission shaft of the automobile, the parking gear 6 and the transmission shaft synchronously rotate, and the parking gear 6 is limited to rotate, so that the rotation of the transmission shaft of the automobile is limited, and parking locking is realized.
When adopting above-mentioned novel parking plunger stop device, through installing stop device 7 between parking control lever 2 and parking push rod 3, when parking control lever 2 is in P fender position or NP fender position, elasticity plunger 72 joint is to corresponding P fender spacing hole 711 or NP fender spacing hole 712, the restriction gear piece 71 rotates, and then make parking control lever 2 and parking push rod 3 be in fixed state, stability when improving parking control lever 2 and being in P fender position or NP fender position, and then promote parking mechanism's stability, avoid parking mechanism to break away from P fender position or NP fender position, improve the parking security.
The foregoing is merely exemplary of the present utility model and is not intended to limit the present utility model. Various modifications and variations of the present utility model will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are to be included in the scope of the claims of the present utility model.
Claims (10)
1. A novel parking plunger limiting device is characterized in that a parking control rod, a parking push rod, a parking pawl, a return spring and a parking gear are arranged in a box body of a gearbox, and when the parking control rod positively rotates to a P gear, the parking push rod extrudes the parking pawl to be clamped to the parking gear; when the parking control rod is reversed to the NP gear, the return spring drives the parking pawl to be separated from the parking gear, and the parking control rod is characterized in that,
the limiting device is connected with the parking control rod and the parking push rod, the limiting device comprises a gear shifting tooth piece and an elastic plunger, one end of the gear shifting tooth piece is fixed to the parking control rod, the other end of the gear shifting tooth piece is hinged to the parking push rod through a supporting shaft, a P-gear limiting hole and an NP-gear limiting hole are formed in the gear shifting tooth piece, the elastic plunger is located below the gear shifting tooth piece and fixed to the box body, and when the parking control rod is located in a P-gear position, the elastic plunger is clamped to the P-gear limiting hole; when the parking control rod is located in the NP gear, the elastic plunger is clamped to the NP gear limiting hole.
2. The novel parking plunger limiting device according to claim 1, wherein the elastic plunger comprises a plunger housing, a plunger spring, a spring support and a plunger head, the plunger spring is fixed in the plunger housing, the plunger head is connected with the plunger spring through the spring support, and the plunger head is provided with a clamping state extending into the P-gear limiting hole or the NP-gear limiting hole and a moving state pressed into the plunger housing.
3. The novel parking plunger limiting device according to claim 2, wherein the acting force required by the plunger head to be extruded into the plunger housing is F, and the pressure of the gear shifting tooth piece to the plunger head is greater than F when the parking control rod drives the gear shifting tooth piece to rotate.
4. The novel parking plunger limiting device according to claim 2, wherein the P-gear limiting hole and the NP-gear limiting hole are circular holes, the plunger head is spherical, and the diameter of the plunger head is larger than the diameters of the P-gear limiting hole and the NP-gear limiting hole.
5. A novel park plunger stop as set forth in claim 2 wherein said plunger spring has a tendency to drive said plunger head toward said shift blade.
6. The novel parking plunger limiting device according to claim 1, wherein a guide block is further fixed in the box body, the parking push rod is slidably mounted to the guide block, and the guide block limits the parking push rod to slide only in the horizontal direction.
7. The novel parking plunger limiting device according to claim 1, wherein one end of the parking pawl is mounted on the box body through a pawl mounting shaft, the parking pawl can rotate around the pawl mounting shaft, the other end of the parking pawl is matched with the parking gear in a clamping mode, the return spring is sleeved on the pawl mounting shaft, and two ends of the return spring are respectively abutted to the parking pawl and the box body.
8. The novel parking plunger limiting device according to claim 1, wherein a parking driver is installed at the bottom of the parking control rod, and the parking driver can drive the parking control rod to rotate to a P gear and an NP gear.
9. The novel parking plunger limiting device according to claim 1, wherein the box body is provided with a through hole matched with the parking control lever, and the box body plays a supporting role on the parking control lever.
10. The novel parking plunger limiting device according to claim 1, wherein the parking gear is connected with a transmission shaft of an automobile, and the parking gear and the transmission shaft rotate synchronously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320204008.4U CN219827676U (en) | 2023-02-10 | 2023-02-10 | Novel parking plunger limiting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320204008.4U CN219827676U (en) | 2023-02-10 | 2023-02-10 | Novel parking plunger limiting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219827676U true CN219827676U (en) | 2023-10-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320204008.4U Active CN219827676U (en) | 2023-02-10 | 2023-02-10 | Novel parking plunger limiting device |
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| Country | Link |
|---|---|
| CN (1) | CN219827676U (en) |
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2023
- 2023-02-10 CN CN202320204008.4U patent/CN219827676U/en active Active
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