A manual transmission selection and shift structure

Abstract

The utility model discloses a kind of manual transmission selects gear shift structure, can high integration, rationally carry out structure arrangement, so that important structure in selection gear structure, gear shift structure can be included into transmission housing structure inside, so that important structure can be prevented from being eroded, avoid the mud between gear shift component, the service life of overall structure can be extended.In the present application, including gear shift main shaft, transmission housing includes big main housing, small rear housing and rear mounting seat, further including selection gear rocker arm and gear shift rocker arm, big main housing, selection gear rocker arm, gear shift rocker arm and rear mounting seat are sequentially arranged along gear shift main shaft axial, the rotation axis of selection gear rocker arm is parallel to the rotation axis of gear shift rocker arm, the rotation axis of selection gear rocker arm is horizontal and perpendicular to gear shift main shaft, vertical through groove and horizontal through groove on integrated shifting block are provided on the both sides of gear shift main shaft in integrated shifting block, selection gear shifting piece driven by selection gear rocker arm and gear shifting piece driven by gear shift rocker arm are provided in small rear housing.

Description

Technical Field

[0001] This utility model belongs to the technical field of vehicle transmission, gearbox, and gear shifting structure, and particularly relates to a manual transmission gear shifting structure. Background Technology

[0002] In traditional manual remote-controlled transmissions, the shift mechanism is mostly exposed (meaning the exposed part doesn't have a housing structure). Only a portion of the shift spindle and a positioning structure (used to assist the shift spindle in positioning for a specific gear) are located inside the transmission housing. This arrangement is because, in many cases, space in the engine compartment is very limited. It's difficult to accommodate additional structures while ensuring adequate spacing for heat dissipation and without interfering with other structures. Therefore, some housing structures are omitted in non-essential locations. However, this also leads to problems such as "exposed parts being easily corroded by dust, dirt, and water during long-term use, and dirt and sand easily getting stuck between shifting parts." Utility Model Content

[0003] This utility model provides a manual transmission gear selection and shifting structure that integrates some components of the gear selection and shifting structure. The structure is highly integrated and rationally arranged, thus incorporating some important structures of the gear selection and shifting structure into the transmission housing structure. This prevents important structures from being corroded by dust, dirt, water, etc., avoids mud and sand getting stuck between shifting components, and extends the service life of the overall structure.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A manual transmission gear selection and shifting structure includes a shift spindle that can rotate relative to the transmission housing. The transmission housing includes a large main housing, a small rear housing, and a rear mounting seat arranged sequentially along the axial direction of the shift spindle. The shift spindle can move axially relative to the transmission housing and passes through the small rear housing.

[0006] It also includes a gear selector rocker arm and a shift rocker arm located outside the small rear housing. The large main housing, gear selector rocker arm, shift rocker arm and rear mounting base are arranged sequentially along the shift main shaft axis. The rotation axis of the gear selector rocker arm is parallel to the rotation axis of the shift rocker arm. The rotation axis of the gear selector rocker arm is horizontal and perpendicular to the shift main shaft.

[0007] The small rear housing is provided with an integrated shift block fixed to the shift spindle. The integrated shift block is provided with a transverse through groove and a vertical through groove located on opposite sides of the shift spindle. The small rear housing is provided with a shift selector driven by a shift selector rocker arm. One end of the shift selector is located in the transverse through groove. The small rear housing is provided with a shift selector driven by a shift selector rocker arm. One end of the shift selector is located in the vertical through groove.

[0008] Preferably, the small rear housing is provided with an integrated positioning block fixed to the shift spindle. The integrated positioning block is provided with a gear selection positioning structure and a shift positioning structure located on opposite sides of the shift spindle. The gear selection positioning structure is a V-shaped groove. The small rear housing is provided with a gear selection positioning pin. The gear selection positioning pin is provided with a gear selection pin groove. A gear selection steel ball is provided on the gear selection pin groove and rests in the V-shaped groove. The gear selection steel ball is slidably connected to the gear selection pin groove. A gear selection spring is provided in the gear selection pin groove to hold the gear selection steel ball in the V-shaped groove. The shift positioning structure includes a first positioning groove, a middle groove, and a second positioning groove arranged continuously. The small rear housing is provided with a shift positioning pin. The shift positioning pin is provided with a shift pin groove. A shift steel ball is provided on the shift pin groove and rests in the first positioning groove, the middle groove, or the second positioning groove. The shift steel ball is slidably connected to the shift pin groove. A shift spring is provided in the shift pin groove to hold the shift steel ball.

[0009] Preferably, the gear selector rocker arm is provided with a gear selector shaft that passes through the small rear housing and is rotatably and sealingly fitted with the small rear housing. One end of the gear selector shaft is located inside the small rear housing, and the other end of the gear selector shaft is connected to the gear selector rocker arm. The end of the gear selector shaft located inside the small rear housing is connected to the gear selector paddle via a gear selector linkage. The gear selector rocker arm is provided with a gear shift shaft that passes through the small rear housing and is rotatably and sealingly fitted with the small rear housing. One end of the gear shift shaft is connected to the gear shift rocker arm. The gear shift shaft is provided with a gear shift linkage located inside the small rear housing. The gear shift linkage is connected to the gear shift paddle. The gear selector paddle and the gear shift paddle are located on opposite sides of the gear shift main shaft. The gear selector shaft is parallel to the gear shift shaft and perpendicular to the gear shift main shaft.

[0010] Preferably, the other end of the shift shaft is provided with a vertical counterweight swing arm located outside the transmission housing. The main housing, the vertical counterweight swing arm and the rear mounting seat are arranged sequentially along the axial direction of the shift main shaft. The upper end of the vertical counterweight swing arm is provided with an upper counterweight block and the lower end of the vertical counterweight swing arm is provided with a lower counterweight block. The vertical counterweight swing arm and the shift swing arm are located on opposite sides of the small rear housing.

[0011] Preferably, the small rear housing is provided with a gear selection hole, a first shift hole, and a second shift hole. A gear selection oil seal that rotates and seals with the gear selection shaft is fixed inside the gear selection hole, and a gear selection self-lubricating hard gasket that rotates and seals with the gear selection shaft is provided outside the gear selection hole. The gear selection self-lubricating hard gasket is sealed and fixed to the small rear housing. A first shift oil seal that rotates and seals with the gear shift shaft is fixed inside the first shift hole, and a first shift self-lubricating hard gasket that rotates and seals with the gear shift shaft is provided outside the first shift hole. The first shift self-lubricating hard gasket is sealed and fixed to the small rear housing. A second shift oil seal that rotates and seals with the gear shift shaft is fixed inside the second shift hole, and a second shift self-lubricating hard gasket that rotates and seals with the gear shift shaft is provided outside the second shift hole. The second shift self-lubricating hard gasket is sealed and fixed to the small rear housing.

[0012] The beneficial effects of this utility model are: it can integrate some components of the gear selection and shifting structure, and arrange the structure in a highly integrated and reasonable manner. This allows some important structures in the gear selection and shifting structure to be incorporated into the transmission housing structure, thereby preventing important structures from being corroded by dust, dirt, water, etc., avoiding the accumulation of mud and sand between shifting components, and extending the service life of the overall structure. The integrated shift blocks and positioning blocks can reduce the structural volume, and a large number of structures are distributed on the small rear housing on the shift shaft, so the overall width space occupied by the transmission will not increase. Setting the swing axis of each rocker arm to be horizontal and perpendicular to the shift main shaft can further ensure that it does not occupy too much space, improve the compactness, and ensure that important structures can be incorporated into the transmission housing. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a partial structural schematic diagram of the present invention;

[0015] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0016] Figure 4 This is a schematic diagram of the integrated positioning block of this utility model from one view.

[0017] Figure 5 This is a structural schematic diagram of the integrated positioning block of this utility model from another perspective;

[0018] Figure 6 This is a schematic diagram of the structure of the gear selection positioning pin and the shift positioning pin of this utility model;

[0019] Figure 7 This is a schematic diagram of the structure of the first shift oil seal of this utility model;

[0020] Figure 8 This is a schematic diagram of the structure of the second shift oil seal of this utility model.

[0021] Reference numerals: 1. Shift spindle; 201. Large main housing; 202. Small rear housing; 203. Rear mounting base; 3. Shift rocker arm; 301. Shift paddle; 302. Shift shaft; 303. Shift linkage; 4. Shift rocker arm; 401. Shift paddle; 402. Shift shaft; 403. Shift linkage; 5. Integrated paddle block; 5a. Horizontal through groove; 5b. Vertical through groove; 6. Integrated positioning block; 6. V-groove; 6a. First positioning groove; 6.11. Middle groove; 6.1 2. Second positioning groove 6.13, gear selection positioning pin 701, gear selection steel ball 701.1, gear shift positioning pin 702, gear shift steel ball 702.1, vertical counterweight swing arm 8, upper counterweight block 801, lower counterweight block 802, gear selection oil seal 901, gear selection self-lubricating hard pad 902, first gear shift oil seal 903, first gear shift self-lubricating hard pad 904, second gear shift oil seal 905, second gear shift self-lubricating hard pad 906. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0023] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 As shown,

[0024] A manual transmission gear selection and shifting structure includes a shift spindle 1 that can rotate relative to the transmission housing. The transmission housing includes a large main housing 201, a small rear housing 202 and a rear mounting base 203 arranged sequentially along the axial direction of the shift spindle 1. The shift spindle 1 can move axially relative to the transmission housing and passes through the small rear housing 202.

[0025] It also includes a gear selector rocker arm 3 and a shift rocker arm 4 located outside the small rear housing 202. The large main housing 201, the gear selector rocker arm 3, the shift rocker arm 4 and the rear mounting base 203 are arranged sequentially along the axial direction of the shift main shaft 1. The rotation axis of the gear selector rocker arm 3 is parallel to the rotation axis of the shift rocker arm 4. The rotation axis of the gear selector rocker arm 3 is horizontal and perpendicular to the shift main shaft 1.

[0026] The small rear housing 202 is provided with an integrated shift block 5 fixed to the shift spindle 1. The integrated shift block 5 is provided with a transverse through groove 5a and a vertical through groove 5b located on opposite sides of the shift spindle 1. The small rear housing 202 is provided with a shift selector 301 driven by the shift selector rocker arm 3. One end of the shift selector 301 is located in the transverse through groove 5a. The small rear housing 202 is provided with a shift selector 401 driven by the shift selector rocker arm 4. One end of the shift selector 401 is located in the vertical through groove 5b.

[0027] The "length direction" is parallel to the axial direction of the shift spindle 1, and the "width direction" is horizontal and perpendicular to the length direction. In the "length direction," the width occupied by the large main housing 201 and the rear mounting base 203 is relatively large, while the width occupied by the small rear housing 202 is relatively small (in traditional manual transmissions without a small rear housing 202, the small rear housing 202 is not provided, but the structures of the rocker arms and shift levers are also different from those in this invention). In this invention, the rotation drive structure and movement drive structure of the shift spindle 1 are directly integrated using the space at the small rear housing 202, i.e., an integrated shift lever 5 is provided, thus effectively saving space.

[0028] Furthermore, the gear selector 301 and the shift paddle 401 are respectively arranged on opposite sides of the shift spindle 1, that is, along the "width direction". This effectively utilizes the small width occupied by the small rear housing 202, so that these space-saving structures can be better installed inside the transmission housing (the small rear housing 202 in this invention). This prevents important structures from being corroded by dust, dirt, water, etc., avoids mud and sand getting stuck between shifting components, and extends the service life of the overall structure.

[0029] Furthermore, the gear selector rocker arm 3 and the shift rocker arm 4 are still located outside the transmission housing (they are relatively long and require a certain range of motion; if they were located inside the transmission housing, they would take up too much space). Moreover, "the rotation axis of the gear selector rocker arm 3 is parallel to the rotation axis of the shift rocker arm 4, and the rotation axis of the gear selector rocker arm 3 is horizontal and perpendicular to the shift spindle 1." In this way, even during operation, the gear selector rocker arm 3 and the shift rocker arm 4 will not occupy more width, ensuring the compactness and rationality of the overall structure.

[0030] The small rear housing 202 contains an integrated positioning block 6 fixed to the shift spindle 1. The integrated positioning block 6 has a gear selection positioning structure and a shift positioning structure located on opposite sides of the shift spindle 1. The gear selection positioning structure is a V-shaped groove 6A. The small rear housing 202 contains a gear selection positioning pin 701 with a gear selection pin groove. A gear selection steel ball 701.1 is mounted on the gear selection pin groove and slides within the V-shaped groove 6A. The gear selection pin groove is used to press the gear selection steel ball 701.1 against the V-shaped groove 6A. The gear selection spring in the groove 6A has a gear shifting positioning structure including a first positioning groove 6.11, a middle groove 6.12 and a second positioning groove 6.13 arranged continuously. A gear shifting positioning pin 702 is provided in the small rear housing 202. The gear shifting positioning pin 702 is provided with a gear shifting pin groove. A gear shifting steel ball 702.1 is provided in the gear shifting pin groove, which can be pushed in the first positioning groove 6.11, the middle groove 6.12 or the second positioning groove 6.13. The gear shifting steel ball 702.1 is slidably connected to the gear shifting pin groove. A gear shifting spring is provided in the gear shifting pin groove to push against the gear shifting steel ball 702.1.

[0031] The integrated positioning block 6 works in conjunction with the positioning pins to position the shift spindle 1 (assisting in positioning the shift spindle 1 at the position corresponding to a certain gear). Background art states that positioning structures (used to assist in positioning the shift spindle 1 at the position corresponding to a certain gear) are arranged within the transmission housing. In this design, the gear selector pin groove for circumferential positioning, and the first positioning groove 6.11, the middle groove 6.12, and the second positioning groove 6.13 for axial positioning are all arranged on the integrated positioning block 6. Then, the gear selector positioning pin 701 and the shift positioning pin 702 are arranged opposite each other along both sides of the shift spindle 1, further improving structural integration and reducing space occupation.

[0032] The gear selector rocker arm 3 is provided with a gear selector shaft 302 that passes through the small rear housing 202 and is rotatably and sealingly engaged with the small rear housing 202. One end of the gear selector shaft 302 is located inside the small rear housing 202, and the other end of the gear selector shaft 302 is connected to the gear selector rocker arm 3. The end of the gear selector shaft 302 located inside the small rear housing 202 is connected to the gear selector paddle 301 via a gear selector connecting rod 303. The gear shift rocker arm 4 is provided with a gear shift shaft 402 that passes through the small rear housing 202 and is rotatably and sealingly engaged with the small rear housing 202. One end of the gear shift shaft 402 is connected to the gear shift rocker arm 4. The gear shift shaft 402 is provided with a gear shift connecting rod 403 located inside the small rear housing 202. The gear shift connecting rod 403 is connected to the gear shift paddle 401. The gear selector paddle 301 and the gear shift paddle are located on opposite sides of the gear shift main shaft 1. The gear selector shaft 302 is parallel to the gear shift shaft and perpendicular to the gear shift main shaft 1.

[0033] From a sealing protection perspective, rotational sealing is clearly better than axial sliding sealing (in axial sliding sealing, a portion of the sliding shaft is sometimes inside and sometimes outside the sealed space). Therefore, in this design, both the gear selector shaft 302 and the shift shaft are arranged to rotate and seal with the transmission housing. However, the gear selector shaft 302 needs to control the rotation of the shift main shaft 1, while the shift shaft needs to control the sliding of the shift main shaft 1. Therefore, the gear selector shaft 302 is connected to the gear selector paddle 301 via a gear selector linkage 303 (converting the rotation of the gear selector shaft 302 into a circumferential movement of the shift main shaft 1 by the gear selector paddle 301), and the shift shaft is connected to the shift paddle 401 via a shift paddle linkage 403 (converting the rotation of the shift shaft 402 into an axial movement of the shift main shaft 1 by the shift paddle 401). This ensures a better sealing effect by rotating and sealing the gear selector shaft 302 with the transmission housing and the shift shaft with the transmission housing. The gear selector 301 and the gear shifter 401 are also arranged on opposite sides of the gear shifter spindle 1, making more reasonable use of space and a more compact layout.

[0034] The other end of the shift shaft is provided with a vertical counterweight swing arm 8 located outside the transmission housing. The main housing 201, the vertical counterweight swing arm 8 and the rear mounting base 203 are arranged sequentially along the axial direction of the shift main shaft 1. The upper end of the vertical counterweight swing arm 8 is provided with an upper counterweight block 801 and the lower end of the vertical counterweight swing arm 8 is provided with a lower counterweight block 802. The vertical counterweight swing arm 8 and the shift arm are located on opposite sides of the small rear housing 202.

[0035] The vertical counterweight swing arm 8, upper counterweight block 801, and upper counterweight block 802 help the operator engage gears. In neutral, the vertical counterweight swing arm 8, upper counterweight block 801, and upper counterweight block 802 are inactive. During gear shifting, when a gear sleeve in the transmission needs to engage with the corresponding gear (when engaging non-neutral), a relatively large force is required. Before this engagement (when engaging non-neutral), the upper counterweight block 801 and lower counterweight block 802 have already rotated. Therefore, due to inertia, the already rotating upper counterweight block 801 and lower counterweight block 802 can assist in providing some force for engaging non-neutral, making gear shifting more responsive and easier.

[0036] The small rear housing 202 is provided with a gear selection hole, a first shift hole, and a second shift hole. A gear selection oil seal 901 is fixed inside the gear selection hole and rotates and seals with the gear selection shaft 302. A gear selection self-lubricating hard gasket 902 is provided outside the gear selection hole and rotates and seals with the gear selection shaft 302. The gear selection self-lubricating hard gasket 902 is sealed and fixed to the small rear housing 202. A first shift oil seal 903 is fixed inside the first shift hole and rotates and seals with the shift shaft 402. A first shift self-lubricating hard gasket 904 is provided outside the first shift hole and rotates and seals with the shift shaft 402. The first shift self-lubricating hard gasket 904 is sealed and fixed to the small rear housing 202. A second shift oil seal 905 is fixed inside the second shift hole and rotates and seals with the shift shaft 402. A second shift self-lubricating hard gasket 906 is provided outside the second shift hole and rotates and seals with the shift shaft 402. The second shift self-lubricating hard gasket 906 is sealed and fixed to the small rear housing 202.

[0037] The oil seal's primary function is to seal oil. The external self-lubricating hard gasket serves two purposes: firstly, it provides support (similar to a bearing), and secondly, it helps to prevent dust accumulation and protect the oil seal.

[0038] The embodiments of this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A manual transmission gear selection and shifting structure, comprising a shift spindle rotatable relative to the transmission housing, the transmission housing comprising a large main housing, a small rear housing, and a rear mounting base arranged sequentially along the axial direction of the shift spindle, the shift spindle being axially movable relative to the transmission housing, and the shift spindle passing through the small rear housing; characterized in that... It also includes a gear selector rocker arm and a shift rocker arm located outside the small rear housing. The large main housing, gear selector rocker arm, shift rocker arm and rear mounting base are arranged sequentially along the shift main shaft axis. The rotation axis of the gear selector rocker arm is parallel to the rotation axis of the shift rocker arm. The rotation axis of the gear selector rocker arm is horizontal and perpendicular to the shift main shaft. The small rear housing is provided with an integrated shift block fixed to the shift spindle. The integrated shift block is provided with a transverse through groove and a vertical through groove located on opposite sides of the shift spindle. The small rear housing is provided with a shift selector driven by a shift selector rocker arm. One end of the shift selector is located in the transverse through groove. The small rear housing is provided with a shift selector driven by a shift selector rocker arm. One end of the shift selector is located in the vertical through groove.

2. The manual transmission shifting structure according to claim 1, characterized in that, The small rear housing contains an integrated positioning block fixed to the shift spindle. The integrated positioning block has a gear selection positioning structure and a shift positioning structure located on opposite sides of the shift spindle. The gear selection positioning structure is a V-shaped groove. The small rear housing contains a gear selection positioning pin with a gear selection pin groove. A gear selection steel ball is mounted on the gear selection pin groove and is slidably connected to the gear selection pin groove. A gear selection spring is located in the gear selection pin groove to hold the gear selection steel ball in the V-shaped groove. The shift positioning structure includes a first positioning groove, a middle groove, and a second positioning groove arranged continuously. The small rear housing contains a shift positioning pin with a shift pin groove. A shift steel ball is mounted on the shift pin groove and can be held in the first positioning groove, the middle groove, or the second positioning groove. The shift steel ball is slidably connected to the shift pin groove. A shift spring is located in the shift pin groove to hold the shift steel ball.

3. A manual transmission shifting structure according to claim 1 or 2, characterized in that, The gear selector rocker arm is provided with a gear selector shaft that passes through the small rear housing and is rotatably and sealingly fitted with the small rear housing. One end of the gear selector shaft is located inside the small rear housing, and the other end of the gear selector shaft is connected to the gear selector rocker arm. The end of the gear selector shaft located inside the small rear housing is connected to the gear selector paddle via a gear selector linkage. The gear shift rocker arm is provided with a gear shift shaft that passes through the small rear housing and is rotatably and sealingly fitted with the small rear housing. One end of the gear shift shaft is connected to the gear shift rocker arm. The gear shift shaft is provided with a gear shift linkage located inside the small rear housing. The gear shift linkage is connected to the gear shift paddle. The gear selector paddle and the gear shift paddle are located on opposite sides of the gear shift main shaft. The gear selector shaft is parallel to the gear shift shaft and perpendicular to the gear shift main shaft.

4. The manual transmission shifting structure according to claim 3, characterized in that, The other end of the shift shaft is provided with a vertical counterweight swing arm located outside the transmission housing. The main housing, the vertical counterweight swing arm and the rear mounting seat are arranged sequentially along the axial direction of the shift main shaft. The upper end of the vertical counterweight swing arm is provided with an upper counterweight block and the lower end of the vertical counterweight swing arm is provided with a lower counterweight block. The vertical counterweight swing arm and the gear selection swing arm are located on opposite sides of the small rear housing.

5. The manual transmission shifting structure according to claim 4, characterized in that, The small rear housing is provided with a gear selection hole, a first shift hole, and a second shift hole. A gear selection oil seal that rotates and seals with the gear selection shaft is fixed inside the gear selection hole. A gear selection self-lubricating hard gasket that rotates and seals with the gear selection shaft is provided outside the gear selection hole. The gear selection self-lubricating hard gasket is sealed and fixed to the small rear housing. A first shift oil seal that rotates and seals with the gear shift shaft is fixed inside the first shift hole. A first shift self-lubricating hard gasket that rotates and seals with the gear shift shaft is provided outside the first shift hole. The first shift self-lubricating hard gasket is sealed and fixed to the small rear housing. A second shift oil seal that rotates and seals with the gear shift shaft is fixed inside the second shift hole. A second shift self-lubricating hard gasket that rotates and seals with the gear shift shaft is provided outside the second shift hole. The second shift self-lubricating hard gasket is sealed and fixed to the small rear housing.

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