Gear shifting air cylinder structure and vehicle

Abstract

The utility model provides a gear shifting air cylinder structure and a vehicle, and the gear shifting air cylinder structure comprises an air cylinder body; the cylinder cover and the cylinder body are matched and connected to form an accommodating space; the plurality of pistons correspond to the plurality of gears, are arranged in the accommodating space and divide the accommodating space into a plurality of sealed cavities which are not communicated with one another; wherein each sealing cavity corresponds to one gear; the gear shifting rod is coaxially connected with the piston in a matched mode; the gear shifting fork is connected with the gear shifting rod in a matched mode. The plurality of vent pipe joints correspond to the plurality of gears and are arranged on the cylinder body and / or the cylinder cover; each sealing cavity is communicated with one ventilation pipe joint; the sealing cavity is inflated through the ventilation pipe connector, the piston axially moves, the gear shifting rod is driven to axially move, the gear shifting fork is driven to axially move to the corresponding gear, the sealing cavity is inflated through the ventilation pipe connector arranged on the air cylinder body and / or the air cylinder cover for gear shifting, the space arrangement is compact, functions are integrated, and the light weight is achieved. The manufacturing cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a shift cylinder structure and a vehicle. Background Art

[0002] The automobile transfer case is an assembly component that can distribute the power output of the transmission to the front and rear drive axles, further increase the torque, and realize functions such as high-speed and low-speed gear switching and front and rear axle differential; the transfer case shift cylinder structure is a part of the transfer case assembly. At present, there are many types of transfer case shift structures, which can generally be divided into mechanical manual type, electronically controlled hydraulic type, electronically controlled pneumatic type, etc. In the existing electronically controlled pneumatic shift cylinder structure, most of the shift cylinders usually adopt an independent cylinder structure, which is independent and separated from the transfer case housing, and is fixed to the transfer case housing through a fixed connection device, which will take up a large layout space, high cost, and low integration. Utility Model Content

[0003] The purpose of the utility model is to provide a shift cylinder structure and a vehicle, which are used to solve the problem that most of the shift cylinders in the prior art electronically controlled pneumatic shift cylinder structures usually adopt an independent cylinder structure, which is independently separated from the transfer case housing, occupies a large layout space, has high cost and low integration.

[0004] In order to solve the above technical problems, the embodiment of the utility model provides a shift cylinder structure, which includes:

[0005] Cylinder block;

[0006] A cylinder head, connected with the cylinder body to form a containing space;

[0007] A plurality of pistons corresponding to a plurality of gear positions are arranged in the accommodating space;

[0008] The multiple pistons divide the accommodating space into multiple sealed cavities that are not connected to each other; wherein each of the sealed cavities corresponds to one of the gear positions;

[0009] A shift rod, coaxially connected with the piston;

[0010] A shift fork, cooperatively connected with the shift lever;

[0011] A plurality of ventilation pipe joints corresponding to a plurality of gears are arranged on the cylinder body and / or the cylinder head; each of the sealing cavities is connected to one of the ventilation pipe joints;

[0012] Wherein, air is inflated into the sealed cavity through the vent pipe joint, and the piston moves axially, driving the shift rod to move axially, and driving the shift fork to move axially to the corresponding gear position.

[0013] Optionally, in the shift cylinder structure, each gear position corresponds to a piston, a vent pipe joint and a sealing cavity.

[0014] Optionally, the shift cylinder structure, wherein for each gear position, the structure further comprises a piston cylinder sleeve and a piston sealing ring;

[0015] A first groove is arranged on the axial surface of the piston, the piston sleeve is sleeved on the piston, the piston sealing ring is arranged in the first groove, and is in contact and connection with the piston sleeve, and / or, is in contact and connection with the shift rod.

[0016] Optionally, the shift cylinder structure, wherein the structure further comprises a shift rod cylinder sleeve and a shift rod sealing ring;

[0017] Wherein, a second groove is arranged on the outer ring of the shift rod, the shift rod cylinder sleeve is sleeved on the shift rod, and the shift rod sealing ring is arranged in the second groove and is in contact and connection with the shift rod cylinder sleeve.

[0018] Optionally, the shift cylinder structure further comprises a locking pin; the locking pin is arranged on the shift rod, and the shift fork is sleeved on the shift rod and axially locked to the shift rod by the locking pin.

[0019] Optionally, the shift cylinder structure further comprises a plurality of feedback switches; the shift lever is provided with a plurality of switch trigger structures corresponding to the plurality of feedback switches; each of the feedback switches corresponds to one of the gear positions, and each of the switch trigger structures corresponds to one of the feedback switches;

[0020] Wherein, when the shift lever reaches a first gear position among a plurality of gear positions, the switch triggering structure corresponding to the first gear position squeezes and triggers the corresponding feedback switch, and the feedback switch sends a gear position signal.

[0021] In order to achieve the above object, the utility model also provides a vehicle, which includes the shift cylinder structure as described above.

[0022] Optionally, the vehicle, wherein the vehicle comprises a dashboard;

[0023] The feedback switch on the shift cylinder structure is connected to the instrument panel. When the feedback switch is triggered, a gear position signal is sent to the instrument panel, and the instrument panel displays corresponding gear position information.

[0024] The beneficial effects of the above technical solution of the utility model are as follows:

[0025] In the above scheme, a plurality of sealed cavities are formed in the accommodating space formed by the connection of the cylinder body and the cylinder head by dividing the plurality of pistons corresponding to the plurality of gears. Air is inflated into the sealed cavity by a breather pipe joint arranged on the cylinder body and / or the cylinder head, so that the piston corresponding to the gear moves axially, driving the shift rod through which the piston is passed axially to move axially, and then driving the shift fork connected to the shift rod to move axially to the corresponding gear. By inflating the sealed cavity with air through a breather pipe joint arranged on the cylinder body and / or the cylinder head to shift gears, the space layout is compact, the functions are integrated, the weight is lighter, and the manufacturing cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the shift cylinder structure according to an embodiment of the utility model;

[0027] Figure 2 A schematic diagram of a neutral position of the shift cylinder structure according to an embodiment of the utility model;

[0028] Figure 3 A schematic diagram of a low gear of the shift cylinder structure according to an embodiment of the utility model;

[0029] Figure 4 This is a schematic diagram of the high gear of the shift cylinder structure described in the embodiment of the utility model.

[0030] Explanation of symbols:

[0031] 100-cylinder body; 200-cylinder head; 300-piston; 301-neutral piston; 302-low-gear piston; 303-high-gear piston; 400-sealing chamber; 401-neutral chamber; 402-low-gear chamber; 403-high-gear chamber; 500-shift lever; 600-shift fork; 700-ventilation pipe joint; 701-neutral ventilation pipe joint; 702-low-gear ventilation pipe joint; 703-high-gear ventilation pipe joint; 801-piston cylinder sleeve; 802-piston sealing ring; 803-shift lever cylinder sleeve; 804-shift lever sealing ring; 805-locking pin; 900-feedback switch; 901-switch trigger structure. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] The utility model aims to solve the problem that most of the shift cylinders in the prior art electronically controlled pneumatic shift cylinder structures usually adopt an independent cylinder structure, which is independently separated from the transfer case housing, occupies a large layout space, has high cost and low integration, and provides a shift cylinder structure and a vehicle.

[0034] like Figure 1 As shown, the embodiment of the utility model provides a shift cylinder structure, which includes:

[0035] Cylinder block 100;

[0036] The cylinder head 200 is connected with the cylinder body 100 to form a receiving space;

[0037] A plurality of pistons 300 corresponding to a plurality of gear positions are arranged in the accommodating space;

[0038] The multiple pistons 300 divide the accommodating space into multiple sealed cavities 400 that are not connected to each other; wherein each of the sealed cavities 400 corresponds to one of the gear positions;

[0039] A shift rod 500 is coaxially connected with the piston 300;

[0040] A shift fork 600, connected to the shift lever 500;

[0041] A plurality of ventilation pipe joints 700 corresponding to a plurality of gears are arranged on the cylinder block 100 and / or the cylinder head 200; each of the sealing cavities 400 is connected to a ventilation pipe joint 700;

[0042] The sealing cavity 400 is inflated through the vent pipe joint 700 , and the piston 300 moves axially, driving the shift rod 500 to move axially, and driving the shift fork 600 to move axially to the corresponding gear position.

[0043] In this embodiment, a plurality of sealed cavities 400 are formed by dividing the accommodating space formed by connecting the cylinder block 100 and the cylinder head 200 through a plurality of pistons 300 corresponding to a plurality of gear positions. The sealed cavities 400 are inflated with air by the ventilation pipe joint 700 provided on the cylinder block 100 and / or the cylinder head 200, so that the piston 300 corresponding to the gear position moves axially, driving the shift rod 500 passing through the piston 300 to move axially, and further driving the shift fork 600 connected to the shift rod 500 to move axially to the corresponding gear position. By inflating the sealed cavities 400 with air through the ventilation pipe joint 700 provided on the cylinder block 100 and / or the cylinder head 200 to shift gears, the space arrangement is compact, the functions are integrated, the weight is lighter, and the manufacturing cost is low.

[0044] Optionally, in the shift cylinder structure, each gear position corresponds to a piston 300, a vent pipe joint 700 and a sealing cavity 400.

[0045] In this embodiment, if Figure 1 and Figure 2 As shown, the multiple gears include neutral, low and high gears; the neutral gear corresponds to the neutral piston 301 among the multiple pistons 300, the neutral cavity 401 among the multiple sealed cavities 400, and the neutral vent pipe joint 701 among the multiple vent pipe joints 700; the low gear corresponds to the low gear piston 302 among the multiple pistons 300, the low gear cavity 402 among the multiple sealed cavities 400, and the low gear vent pipe joint 702 among the multiple vent pipe joints 700; the high gear corresponds to the high gear piston 303 among the multiple pistons 300, the high gear cavity 403 among the multiple sealed cavities 400, and the high gear vent pipe joint 703 among the multiple vent pipe joints 700.

[0046] Optionally, the shift cylinder structure, wherein for each gear position, the structure further includes a piston cylinder sleeve 801 and a piston sealing ring 802;

[0047] A first groove is provided on the axial surface of the piston 300 , the piston sleeve 801 is sleeved on the piston 300 , the piston sealing ring 802 is provided in the first groove, and is in contact and connection with the piston sleeve 801 , and / or, is in contact and connection with the shift rod 500 .

[0048] Optionally, the shift cylinder structure, wherein the structure further includes a shift rod cylinder sleeve 803 and a shift rod sealing ring 804;

[0049] The outer ring of the shift rod 500 is provided with a second groove, the shift rod cylinder sleeve 803 is sleeved on the shift rod 500 , and the shift rod sealing ring 804 is disposed in the second groove and is in contact with and connected to the shift rod cylinder sleeve 803 .

[0050] In this embodiment, since the cylinder block 100 is made of aluminum alloy, is a part of the transfer case housing, and is cast as one piece with the transfer case housing, the cylinder head 200 is installed at one end of the cylinder block 100, and the cylinder head 200 and the cylinder block 100 are connected and installed by bolts. In order to ensure the sealing between the cylinder block 100 and the cylinder head 200, a sealing gasket is added between the cylinder block 100 and the cylinder head 200. Since the aluminum alloy cylinder body has a low hardness and is not wear-resistant, the piston sleeve 801 and the shift rod sleeve 803 are designed in the cylinder body 100, wherein the piston sleeve 801 includes a neutral piston sleeve sleeved on the neutral piston 301 and a high-speed piston sleeve sleeved on the high-speed piston 303, and the shift rod sleeve 803 sleeves the shift rod. The piston sleeve 801 and the shift rod sleeve 803 are both press-fitted into the inner hole of the cylinder body 100, i.e., the accommodating space, by interference fit. The piston sleeve 801 and the shift rod sleeve 803 ensure the wear resistance between the inner wall of the cylinder body 100 and the piston 300 or the shift rod 500.

[0051] A neutral piston outer sealing ring of the piston sealing ring 802 is arranged in the first groove on the outer surface of the axial surface of the neutral piston 301, a high-speed piston outer sealing ring of the piston sealing ring 802 is arranged in the first groove on the outer surface of the axial surface of the high-speed piston 303, a high-speed piston inner sealing ring of the piston sealing ring 802 is arranged in the first groove on the inner surface of the axial surface of the high-speed piston 303, a low-speed piston outer sealing ring of the piston sealing ring 802 is arranged in the first groove on the outer surface of the axial surface of the low-speed piston 302, and a low-speed piston outer sealing ring of the piston sealing ring 802 is arranged on the inner surface of the axial surface of the low-speed piston 302. The low-gear piston inner sealing ring in the piston sealing ring 802 is arranged in the first groove, and the shift rod sealing ring 804 is arranged in the second groove on the shift rod 500, wherein the neutral piston outer sealing ring is in contact with and connected to the neutral piston cylinder sleeve in the piston cylinder sleeve 801, the high-gear piston outer sealing ring is in contact with and connected to the high-gear piston cylinder sleeve in the piston cylinder sleeve 801, the high-gear piston inner sealing ring is in contact with and connected to the shift rod 500, the low-gear piston outer sealing ring is in contact with and connected to the inner surface of the axial surface of the neutral piston 301, the low-gear piston inner sealing ring is in contact with and connected to the shift rod 500, and the shift rod sealing ring 804 is in contact with and connected to the shift rod cylinder sleeve 803.

[0052] The right end face of the high-range piston 303 presses against the shoulder end face of the shift rod 500, and the right end face of the low-range piston 302 presses against the left end face of the high-range piston 303, and axially clamps the high-range piston 303; a piston retaining ring is designed on the left side of the low-range piston 302, and the piston retaining ring is stuck in the retaining ring groove on the shift rod 500, axially locking the low-range piston 302 and the high-range piston 303 to prevent the low-range piston 302 and the high-range piston 303 from axially moving relative to the shift rod 500.

[0053] Through the cooperation between the sealing ring and the piston 300, the accommodating space is divided into the neutral gear cavity 401, the low gear cavity 402 and the high gear cavity 403, and the sealing performance of the sealed cavity 400 is ensured. When the shift lever is working in a certain gear position, the sealed cavity 400 will be filled with air and pressurized, while the other sealed cavities 400 will not be filled with air and pressurized. Figure 2 As shown, low gear Figure 3 As shown, high gear Figure 4 As shown. Each of the sealed cavities 400 is designed with a vent hole, and the vent pipe joint 700 is mounted on the vent hole for connecting a vent pipe to achieve inflation and deflation of the gas in the sealed cavity 400. To ensure the compactness of the design structure, the low gear vent pipe joint 702 is designed to be mounted on the cylinder head 200, and the neutral gear vent pipe joint 701 and the high gear vent pipe joint 703 are designed to be mounted on the cylinder body 100.

[0054] Optionally, the shift cylinder structure further includes a locking pin 805 ; the locking pin 805 is disposed on the shift rod 500 , and the shift fork 600 is sleeved on the shift rod 500 and axially locked to the shift rod 500 by the locking pin 805 .

[0055] In this embodiment, the shift rod 500 is mounted on the transfer case housing, and has two supporting and matching parts, one of which is supported by the shift rod sleeve 803 pressed on the cylinder body 100; the other is supported in the shift rod mounting hole on the transfer case housing. The shift fork 600 is sleeved on the shift rod 500 and is axially locked by the two locking pins 805, ensuring that the shift rod 500 drives the shift fork 600 to move axially during the shifting process.

[0056] Optionally, the shift cylinder structure further comprises a plurality of feedback switches 900; the shift lever 500 is provided with a plurality of switch trigger structures 901 corresponding to the plurality of feedback switches 900; each feedback switch 900 corresponds to one of the gear positions, and each of the switch trigger structures 901 corresponds to one of the feedback switches 900;

[0057] When the shift lever 500 reaches a first gear position among multiple gear positions, the switch trigger structure 901 corresponding to the first gear position squeezes and triggers the corresponding feedback switch 900 , and the feedback switch 900 sends a gear position signal.

[0058] In this embodiment, the feedback switches 900 corresponding to three gears are designed on the transfer case housing where the cylinder head 200 and the cylinder block 100 are located, wherein the cylinder head 200 is equipped with a high gear feedback switch, and the transfer case housing is equipped with a neutral gear feedback switch and a low gear feedback switch from left to right. The shift lever is designed with a switch triggering structure 901 of the feedback switch. When the shift cylinder structure works in a certain gear, the shift lever 500 will squeeze the feedback switch 900 of that gear to trigger the feedback switch 900. The neutral gear is the feedback switch 901 of the neutral gear. Figure 2 As shown, low gear Figure 3 As shown, high gear Figure 4 shown.

[0059] In order to achieve the above object, the utility model also provides a vehicle, which includes the shift cylinder structure as described above.

[0060] Optionally, the vehicle, wherein the vehicle comprises a dashboard;

[0061] The feedback switch 900 on the shift cylinder structure is connected to the instrument panel. When the feedback switch 900 is triggered, a gear position signal is sent to the instrument panel, and the instrument panel displays the corresponding gear position information.

[0062] In this embodiment, when the feedback switch 900 is triggered, the feedback is fed back to the instrument panel in the cab through the electrical circuit of the feedback switch 900, so that the driver can directly and truly judge which gear the vehicle is currently in.

[0063] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A shift cylinder structure, characterized in that: include: Cylinder block (100); A cylinder head (200) is connected to the cylinder body (100) to form a receiving space; A plurality of pistons (300) corresponding to a plurality of gear positions are arranged in the accommodating space; The multiple pistons (300) divide the accommodating space into multiple sealed cavities (400) that are not connected to each other; wherein each of the sealed cavities (400) corresponds to one of the gear positions; A shift rod (500) is coaxially connected to the piston (300); A shift fork (600) is connected to the shift lever (500); A plurality of ventilation pipe joints (700) corresponding to a plurality of gear positions are arranged on the cylinder body (100) and / or the cylinder head (200); each of the sealed cavities (400) is connected to one of the ventilation pipe joints (700); The sealed cavity (400) is inflated with air through the ventilation pipe joint (700), and the piston (300) moves axially, driving the shift rod (500) to move axially, and driving the shift fork (600) to move axially to the corresponding gear position.

2. The shift cylinder structure according to claim 1, characterized in that: Each gear position corresponds to a piston (300), a vent pipe joint (700) and a sealing cavity (400).

3. The shift cylinder structure according to claim 2, characterized in that: For each gear position, the structure further includes a piston sleeve (801) and a piston sealing ring (802); A first groove is provided on the axial surface of the piston (300), the piston sleeve (801) is sleeved on the piston (300), and the piston sealing ring (802) is provided in the first groove and is in contact and connection with the piston sleeve (801) and / or is in contact and connection with the shift rod (500).

4. The shift cylinder structure according to claim 1, characterized in that: The structure also includes a shift rod cylinder sleeve (803) and a shift rod sealing ring (804); The outer ring of the shift rod (500) is provided with a second groove, the shift rod cylinder sleeve (803) is sleeved on the shift rod (500), and the shift rod sealing ring (804) is arranged in the second groove and is in contact with and connected to the shift rod cylinder sleeve (803).

5. The shift cylinder structure according to claim 1, characterized in that: The structure further comprises a locking pin (805); the locking pin (805) is arranged on the shift rod (500); the shift fork (600) is sleeved on the shift rod (500) and is axially locked to the shift rod (500) by the locking pin (805).

6. The shift cylinder structure according to claim 1, characterized in that: The structure further comprises a plurality of feedback switches (900); a plurality of switch trigger structures (901) corresponding to the plurality of feedback switches (900) are arranged on the shift lever (500); each of the feedback switches (900) corresponds to one of the gear positions, and each of the switch trigger structures (901) corresponds to one of the feedback switches (900); Wherein, when the shift lever (500) reaches a first gear position among a plurality of gear positions, the switch trigger structure (901) corresponding to the first gear position squeezes and triggers the corresponding feedback switch (900), and the feedback switch (900) sends a gear position signal.

7. A vehicle, characterized in that: It comprises a shift cylinder structure as described in any one of claims 1 to 6.

8. The vehicle according to claim 7, characterized in that The vehicle includes an instrument panel; The feedback switch (900) on the shift cylinder structure is connected to the instrument panel. When the feedback switch (900) is triggered, a gear position signal is sent to the instrument panel, and the instrument panel displays corresponding gear position information.

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