Motorcycle shifting fork

Abstract

The utility model discloses a motorcycle shifting fork which comprises a guide rod, the surface of the guide rod is sleeved with a first shifting fork, a second shifting fork and a third shifting fork, one side of the first shifting fork, one side of the second shifting fork and one side of the third shifting fork are detachably provided with first half-moon plates arranged on the surface of the guide rod in a sleeved mode, and the top of one side of each first half-moon plate is fixedly connected with a fixing sleeve. The structural design of the M-shaped support sliding sleeve is adopted, the M-shaped sliding piece is provided with multi-point supporting on the rod piece, even if one point is abraded, the other point positions can also play a role in supporting, the supporting effect is good, and the supporting effect is good. Compared with a structure with a point-to-point position, the shifting fork is longer in service life, smaller in horizontal height error in the same time range, more accurate and rapid in speed change, higher in efficiency and higher in driving safety.

Description

Technical Field

[0001] The utility model relates to the technical field of motorcycle shift forks, in particular to a motorcycle shift fork. Background Art

[0002] The motorcycle shift fork is an important component in the motorcycle gearbox. It is responsible for switching different gear combinations at different speeds to adapt to different driving conditions. The traditional motorcycle shift fork is installed on the rod in a sleeve-type manner, that is, the rod is passed through the inside of the shift fork. However, since the internal holes and rods of the shift fork are round, the fulcrums and contact points between them are single and small. With long-term use and wear, the gap between the inner wall of the shift fork and the outer wall of the rod will become larger and larger, and the diameter of the rod will also become smaller during wear. This causes an error between the horizontal height of the shift fork and the actual set horizontal height, which can easily cause errors in the motorcycle's speed change, and errors are prone to occur when the gears are engaged, resulting in untimely speed change of the motorcycle, reduced speed change accuracy and efficiency of the motorcycle, and reduced driving safety for users.

[0003] In view of the above problems, the present invention makes improvements. Summary of the Invention

[0004] The utility model provides a motorcycle shift fork, which solves the above problems existing in the prior art during use.

[0005] The technical solution of the utility model is achieved as follows: a motorcycle shift fork comprises a guide rod, the surface of the guide rod is sleeved with shift fork 1, shift fork 2, and shift fork 3, one side of the shift fork 1, shift fork 2, and shift fork 3 can be detachably installed with a meniscus 1 sleeved on the surface of the guide rod, the top of one side of the meniscus 1 is fixedly connected with a fixing sleeve, the top of the fixing sleeve is penetrated by a fastening bolt, the bottom of the surface of the fastening bolt is sleeved with a positioning block, the surface of the fastening bolt is sleeved with a spring, the two ends of the spring are respectively fixedly connected to the positioning block and the fastening bolt, one side of the top of the shift fork 1, shift fork 2, and shift fork 3 is fixedly connected with a connecting block clamped in the fixing sleeve, and the connecting block is adapted to the positioning block.

[0006] The utility model is used for a motorcycle fork as described above, further comprising: a second meniscus sleeved on a guide rod is provided at the bottom of the first meniscus, mounting bolts are provided on both sides of the top of the first meniscus, and the first meniscus is fixedly connected to the second meniscus by two mounting bolts.

[0007] The utility model is used for a motorcycle shift fork as described above, further comprising: a protrusion fixedly connected to the inner wall of the top of the meniscus, a guide slot is provided on the top of the guide rod, and the protrusion is slidably installed in the guide slot.

[0008] The utility model is used for a motorcycle shift fork as described above, further comprising: positioning grooves are provided on both sides of the top of the second meniscus, and positioning pins are fixedly connected to both sides of the bottom of the first meniscus and inserted into the positioning grooves.

[0009] The utility model is used for a motorcycle shift fork as described above, further comprising: a clamping block is fixedly connected to one side of the meniscus 2, and a side of the clamping block away from the meniscus 2 is inserted into the corresponding shift fork 1, shift fork 2 or shift fork 3.

[0010] The utility model is used for the motorcycle shift fork as described above, further comprising: one side of the shift fork 1, the shift fork 2, and the shift fork 3 is fixedly connected with a sliding pin, and one side of the guide rod is provided with a rotating shaft rod.

[0011] The utility model is used for a motorcycle shift fork as described above, further comprising: the surface of the rotating shaft rod is provided with an annular groove 1, an annular groove 2 and an annular groove 3 distributed at equal intervals, and the annular groove 1, annular groove 2 and annular groove 3 are respectively adapted to three sliding pins.

[0012] In summary, the beneficial effects of the present invention are:

[0013] 1. The utility model adopts the structural design of M-shaped bracket sliding sleeve. The M-shaped sliding part has multiple support points on the rod. Even if one point is worn, the other points can also provide support. The fork will not sink until multiple support points are worn to the same height. Compared with the structure with one support point, this has a longer service life, smaller error in horizontal height within the same time range, more accurate and fast speed change, higher efficiency and higher driving safety.

[0014] 2. In the present invention, through the arrangement of meniscus 2 and mounting bolts, meniscus 2 and meniscus 1 can form a kit that is easy to install, making it convenient for users to install it on the guide rod. At the same time, meniscus 2 is installed on meniscus 1 by using mounting bolts, which is also convenient for users to disassemble it, thereby providing convenience for users' disassembly work.

[0015] 3. The utility model provides a protrusion and a guide groove. The guide groove is opened on the guide rod, and the protrusion is fixed on the inner wall of the meniscus 1. When the meniscus 1 slides on the guide rod, the protrusion will also slide in the guide groove. In this way, it can guide and limit the movement of the meniscus 1 and the shift fork 1, shift fork 2, and shift fork 3, providing convenience for the user's work.

[0016] 4. The utility model provides positioning pins and positioning grooves. When assembling meniscus 1 and meniscus 2, the positioning pins will be inserted into the corresponding positioning grooves, so that meniscus 1 and meniscus 2 can be positioned together, providing assistance for the subsequent installation of the mounting bolts and providing convenience for the user's assembly work.

[0017] 5. In the present invention, through the setting of the card block, the side of the shift fork 1, the shift fork 2, and the shift fork 3 facing the card block is provided with a groove adapted thereto. Therefore, when the meniscus 2 is installed, the card block will be inserted into the corresponding groove to achieve the positioning of the meniscus 2 during installation, which provides convenience for the user's assembly work. It should be noted that the shape of the groove on the shift fork 1, the shift fork 2, and the shift fork 3 can be designed to be long or arc-shaped, so that the card block can move in the groove with the meniscus 2 when the meniscus 2 needs to move, so as to meet different usage requirements and provide convenience for the user's work.

[0018] 6. The utility model is provided with a sliding pin, a rotating shaft rod, an annular groove 1, an annular groove 2 and an annular groove 3. When in use, the three sliding pins slide in the annular groove 1, annular groove 2 and annular groove 3 respectively. In this way, when the rotating shaft rod rotates, it can drive the three sliding pins and the shift fork 1, shift fork 2 and shift fork 3 to move, thereby ensuring the normal operation of the speed change. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 It is a schematic diagram of a partial three-dimensional structure of the utility model;

[0022] Figure 3 This is a schematic diagram of the partial three-dimensional structure of the present invention;

[0023] Figure 4 Schematic diagram of the three-dimensional structure of meniscus 1;

[0024] Figure 5 Schematic diagram of the three-dimensional structure of meniscus II.

[0025] In the figure: 1, guide rod, 2, meniscus 1, 3, fixing sleeve, 4, fastening bolt, 5, positioning block, 6, spring, 7, shift fork 1, 8, connecting block, 9, sliding pin, 10, meniscus 2, 11, mounting bolt, 12, bump, 13, guide groove, 14, positioning pin, 15, positioning groove, 16, clamping block, 17, shift fork 2, 18, shift fork 3, 19, rotating shaft rod, 20, annular groove 1, 21, annular groove 2, 22, annular groove 3. DETAILED DESCRIPTION

[0026] The following is a combination of the appended examples of the present invention Figure 1-5 , clearly and completely describes the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention. Example

[0027] A motorcycle shift fork comprises a guide rod 1, wherein a shift fork 1 7, a shift fork 2 17, and a shift fork 3 18 are sleeved on the surface of the guide rod 1, and one side of each of the shift fork 1 7, the shift fork 2 17, and the shift fork 3 18 can be detachably mounted with a meniscus 2 sleeved on the surface of the guide rod 1, and a fixing sleeve 3 is fixedly connected to the top of one side of the meniscus 2, and a fastening bolt 4 is provided through the top of the fixing sleeve 3, and a positioning block 5 is sleeved on the bottom of the surface of the fastening bolt 4, and a spring 6 is sleeved on the surface of the fastening bolt 4, and both ends of the spring 6 are fixedly connected to the positioning block 5 and the fastening bolt 4 respectively, and one side of the top of each of the shift fork 1 7, the shift fork 2 17, and the shift fork 3 18 is fixedly connected to a connecting block 8 clamped in the fixing sleeve 3, and the connecting block 8 is adapted to the positioning block 5.

[0028] The specific usage process is as follows: first, the protrusion 12 is fixed on the inner wall of the meniscus 12, so that the protrusion 12 and the meniscus 12 form an M-shaped "bracket", which slides on the guide rod 1, that is, the protrusion 12 slides in the guide groove 13, and the meniscus 12 slides on the surface of the guide rod 1, so that the two sides of the inner wall of the meniscus 2 and the protrusion 12 can form multiple support points. Compared with the support point formed by the fork 1 7, the fork 2 17, and the fork 3 18 on the guide rod 1, the contact surface is more, even under the action of its own gravity, the wear time will be extended, that is to say, compared with the traditional structure, the error between the sinking level of the fork 1 7, the fork 2 17, and the fork 3 18 and the set level is also smaller. The invention is small, which can extend the service life of the shift fork 1 7, the shift fork 2 17, and the shift fork 3 18 and reduce the maintenance cost. During the installation, the shift fork 1 7, the shift fork 2 17, and the shift fork 3 18 are sequentially sleeved on the guide rod 1, and the sliding pins 9 on the shift fork 1 7, the shift fork 2 17, and the shift fork 3 18 are inserted into the annular groove 1 20, the annular groove 21, and the annular groove 3 22 at one time. During this period, the meniscus 1 2 is also installed in sequence. After the meniscus 1 2 is installed, the meniscus 2 10 is installed on the meniscus 1 2 with the mounting bolts 11. Among them, after the meniscus 1 2 is fitted to the corresponding shift fork 1 7, the shift fork 2 17, and the shift fork 3 18, the connecting blocks 8 on the shift fork 1 7, the shift fork 2 17, and the shift fork 3 18 will be stuck in the fixing sleeve 3, and then the positioning block 5 will be squeezed upwards to position. The block 5 will move up, and then the positioning block 5 will compress the spring 6, and the spring 6 will drive the fastening bolt 4 to move up until the connecting block 8 is completely stuck in the fixing sleeve 3. At this time, under the action of the spring 6, the positioning block 5 will be stuck in the notch at the top of the connecting block 8, and then the fastening bolt 4 will be rotated. Because the fastening bolt 4 is threadedly connected to the connecting block 8 and the fixing sleeve 3, the fastening bolt 4 will move down when the fastening bolt 4 is rotated until the end of the fastening bolt 4 is inserted into the connecting block 8. Finally, tighten the fastening bolt 4. In this way, the connecting block 8 can be fixed in the fixing sleeve 3, and the meniscus 1 2 is also fixed on the corresponding fork 1 7, fork 2 17 or fork 3 18. Finally, the meniscus 2 10 is installed on the meniscus 1 2 to complete the final assembly. During the installation, when the user performs the speed change operation, the shaft rod 19 rotates, and under the action of the annular groove 20, the annular groove 21 and the annular groove 3 22, the three sliding pins 9 drive the shift fork 1 7, the shift fork 2 17 and the shift fork 3 18 to slide on the guide rod 1. The specific working process is subject to actual conditions and will not be described in detail in this article. Among them, the meniscus 2 10 and the meniscus 1 2 can form a convenient installation kit, which is convenient for the user to install it on the guide rod 1. At the same time, the meniscus 2 10 is installed on the meniscus 1 2 by the mounting bolt 11, which is also convenient for the user to disassemble it, thereby providing convenience for the user's disassembly work. The guide groove 13 is provided on the guide rod 1, and the protrusion 12 is fixed on the inner wall of the meniscus 1 2. When the meniscus 1 2 slides on the guide rod 1,The protrusion 12 will also slide in the guide groove 13, so that it can guide and limit the movement of the meniscus 1 2 and the shift fork 1 7, the shift fork 2 17, and the shift fork 3 18, providing convenience for the user's work. When assembling the meniscus 1 2 and the meniscus 2 10, the positioning pin 14 will be inserted into the corresponding positioning groove 15, so that the meniscus 1 2 and the meniscus 2 10 can be positioned together, providing assistance for the subsequent installation of the mounting bolt 11, providing convenience for the user's assembly work, and the shift fork 1 7, the shift fork 2 17, and the shift fork 3 18 are provided with a groove adapted thereto on one side of the block 16, so that the block 16 will be inserted into the corresponding groove when the meniscus 2 10 is installed, realizing the meniscus 1 The positioning of the second plate 10 during installation provides convenience for the user's assembly work. It should be noted that the shape of the grooves on the first shift fork 7, the second shift fork 17, and the third shift fork 18 can be designed to be long and curved. In this way, the clamping block 16 can move within the groove along with the second meniscus 10 when it needs to move, thereby meeting different usage requirements and providing convenience for the user's work. It should be noted that this solution only shows one bracket structure. It is also possible to design the fixing sleeve 3 to be able to swing within a certain angle range on the side of the first meniscus 2. This can ensure that the shift fork can move normally on the guide rod 1 and can also ensure that the shift fork can make appropriate movements during the speed change operation to meet actual usage requirements.

[0029] Therefore, an M-shaped bracket sleeve structural design is adopted. The M-shaped sliding part has multi-point support on the rod. Even if one point is worn, the other points can also provide support. The fork will not sink until multiple support points are worn to the same height. Compared with the structure with only one support point, this has a longer service life, a smaller error in horizontal height within the same time range, more accurate and fast speed changing, higher efficiency, and higher driving safety.

[0030] A meniscus 2 10 sleeved on the guide rod 1 is provided at the bottom of the meniscus 1, and mounting bolts 11 are provided on both sides of the top of the meniscus 2. The meniscus 1 2 is fixedly connected to the meniscus 2 10 by two mounting bolts 11.

[0031] Specifically, with the arrangement of meniscus 2 10 and mounting bolts 11, meniscus 2 10 and meniscus 1 2 can form a convenient installation kit, which is convenient for users to install it on the guide rod 1. At the same time, meniscus 2 10 is installed on meniscus 1 2 using mounting bolts 11, which is also convenient for users to disassemble it, thereby providing convenience for users' disassembly work.

[0032] A protrusion 12 is fixedly connected to the inner wall of the top of the meniscus 2, and a guide groove 13 is opened on the top of the guide rod 1. The protrusion 12 is slidably installed in the guide groove 13.

[0033] Specifically, the setting of the protrusion 12 and the guide groove 13 is that the guide groove 13 is opened on the guide rod 1, and the protrusion 12 is fixed on the inner wall of the meniscus 1 2. When the meniscus 1 2 slides on the guide rod 1, the protrusion 12 will also slide in the guide groove 13, so that it can guide and limit the movement of the meniscus 1 2 and the fork 1 7, the fork 2 17, and the fork 3 18, providing convenience for the user's work.

[0034] Positioning grooves 15 are provided on both sides of the top of the meniscus 2, and positioning pins 14 inserted into the positioning grooves 15 are fixedly connected to both sides of the bottom of the meniscus 1.

[0035] Specifically, the positioning pin 14 and the positioning groove 15 are set so that when assembling meniscus 1 2 and meniscus 2 10, the positioning pin 14 will be inserted into the corresponding positioning groove 15, so that meniscus 1 2 and meniscus 2 10 can be positioned together, providing assistance for the subsequent installation of the mounting bolt 11, and providing convenience for the user's assembly work.

[0036] A clamping block 16 is fixedly connected to one side of the meniscus 2 10 , and the side of the clamping block 16 away from the meniscus 2 10 is inserted into the corresponding shift fork 1 7 , shift fork 2 17 or shift fork 3 18 .

[0037] Specifically, the setting of the block 16, the side of the fork 1 7, the fork 2 17, and the fork 3 18 facing the block 16 is provided with a groove adapted thereto, so that the block 16 will be inserted into the corresponding groove when the meniscus 2 10 is installed, so as to realize the positioning of the meniscus 2 10 during installation, providing convenience for the user's assembly work. It should be noted that the shape of the grooves on the fork 1 7, the fork 2 17, and the fork 3 18 can be designed to be long and arc-shaped, so that the block 16 can move in the groove following the meniscus 2 10 when the meniscus 2 10 needs to move, so as to meet different usage requirements and provide convenience for the user's work.

[0038] One side of the shift fork 1 7, the shift fork 2 17, and the shift fork 3 18 are all fixedly connected with a sliding pin 9, and a rotating shaft rod 19 is provided on one side of the guide rod 1. The surface of the rotating shaft rod 19 is provided with an annular groove 1 20, an annular groove 21, and an annular groove 3 22 distributed at equal intervals. The annular groove 1 20, the annular groove 21, and the annular groove 3 22 are respectively adapted to the three sliding pins 9.

[0039] Specifically, the sliding pin 9, the rotating shaft rod 19, the annular groove 1 20, the annular groove 21 and the annular groove 3 22 are arranged so that when the three sliding pins 9 are in use, they slide in the annular groove 1 20, the annular groove 21 and the annular groove 3 22 respectively. In this way, when the rotating shaft rod 19 rotates, it can drive the three sliding pins 9 and the shift fork 1 7, the shift fork 2 17 and the shift fork 3 18 to move and ensure the normal progress of the speed change. The specific working process shall be subject to actual conditions. This is the existing technology and will not be explained in detail in this article.

[0040] It should be noted that the functions to be implemented by each hardware in the present invention are supported by a large number of mature technologies and belong to the existing technology. The essence of the present invention lies in optimizing the combination of existing hardware and its connection methods for specific application scenarios to meet the adaptation needs in specific application scenarios and solve the problems raised in the background technology (not involving improvements to the software inside the hardware).

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A motorcycle shift fork, comprising a guide rod (1), characterized in that: The surface of the guide rod (1) is sleeved with a shift fork 1 (7), a shift fork 2 (17), and a shift fork 3 (18); one side of the shift fork 1 (7), the shift fork 2 (17), and the shift fork 3 (18) can be detachably mounted with a meniscus 1 (2) sleeved on the surface of the guide rod (1); the top of one side of the meniscus 1 (2) is fixedly connected with a fixing sleeve (3); a fastening bolt (4) is provided through the top of the fixing sleeve (3); a positioning block (5) is sleeved on the bottom of the surface of the fastening bolt (4); a spring (6) is sleeved on the surface of the fastening bolt (4); two ends of the spring (6) are fixedly connected to the positioning block (5) and the fastening bolt (4), respectively; one side of the top of the shift fork 1 (7), the shift fork 2 (17), and the shift fork 3 (18) is fixedly connected with a connecting block (8) clamped in the fixing sleeve (3); the connecting block (8) is adapted to the positioning block (5).

2. A motorcycle shift fork according to claim 1, characterized in that: The bottom of the meniscus 1 (2) is provided with a meniscus 2 (10) sleeved on the guide rod (1), and both sides of the top of the meniscus 1 (2) are penetrated by mounting bolts (11), and the meniscus 1 (2) is fixedly connected to the meniscus 2 (10) by the two mounting bolts (11).

3. A motorcycle shift fork according to claim 2, characterized in that: A protrusion (12) is fixedly connected to the inner wall of the top of the meniscus (2), and a guide slot (13) is provided on the top of the guide rod (1), and the protrusion (12) is slidably installed in the guide slot (13).

4. A motorcycle shift fork according to claim 3, characterized in that: Both sides of the top of the second meniscus (10) are provided with positioning grooves (15), and both sides of the bottom of the first meniscus (2) are fixedly connected with positioning pins (14) inserted into the positioning grooves (15).

5. The motorcycle shift fork according to claim 4, characterized in that: One side of the meniscus 2 (10) is fixedly connected with a clamping block (16), and the side of the clamping block (16) away from the meniscus 2 (10) is inserted into the corresponding shift fork 1 (7), shift fork 2 (17) or shift fork 3 (18).

6. The motorcycle shift fork according to claim 5, characterized in that: One side of the shift fork 1 (7), the shift fork 2 (17), and the shift fork 3 (18) is fixedly connected with a sliding pin (9), and one side of the guide rod (1) is provided with a rotating shaft rod (19).

7. The motorcycle shift fork according to claim 6, characterized in that: The surface of the rotating shaft rod (19) is provided with an annular groove 1 (20), an annular groove 2 (21) and an annular groove 3 (22) distributed at equal intervals, and the annular groove 1 (20), annular groove 2 (21) and annular groove 3 (22) are respectively adapted to the three sliding pins (9).

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