Novel pressing type gear shifting gearbox

Abstract

The utility model relates to the technical field of gearboxes, in particular to a novel pressing type gear shifting gearbox which comprises a shell, and the shell comprises a gearbox body. A sleeve rod can be extruded through movement of a connecting rod, then the sleeve rod moves on the inner side of a cylindrical cam, an extrusion block can extrude a slope block, and therefore a movable sleeve drives a connecting plate to move, and the movable sleeve can rotate in cooperation with the elastic property of a spring; by arranging the first clamping groove, the second clamping groove and the third clamping groove, the bevel block can enter the inner side of the first clamping groove, the inner side of the second clamping groove and the inner side of the third clamping groove, the movable sleeve drives the gear shifting rod to move, the gear shifting rod drives the meshing sleeve to move, and the gear shifting effect is achieved; therefore, the position of the gear shifting rod can be limited, and the problem of out-of-gear does not occur easily.

Description

Technical Field

[0001] The utility model relates to the technical field of gearboxes, in particular to a novel push-type shift gearbox. Background Art

[0002] The gearbox is a mechanism used to change the speed and torque from the engine. It can change the transmission ratio of the output shaft and the input shaft in a fixed or divided manner. The transmission is composed of a speed transmission mechanism and an operating mechanism. Some cars also have a power output mechanism. Most transmission mechanisms use ordinary gear transmissions, and some use planetary gear transmissions. Ordinary gear transmission speed change mechanisms generally use sliding gears and synchronizers, etc. It achieves the adjustment of different vehicle speeds by changing the gear transmission ratio between the engine and the transmission shaft to provide appropriate power and efficiency. Among the gears of the transmission, the gear with a small number is called a low gear. The smaller the gear number, the greater the transmission ratio, the greater the traction, and the lower the vehicle speed.

[0003] In the prior art, when the gearbox is used, the gear shifting of the gearbox is generally achieved by operating the gear shift lever to move the engagement sleeve. Since the gear shift lever cannot be well limited or fixed after the gear shifting, the gear shift lever is prone to movement when external contact occurs, which can easily cause the gear position to change and cause the problem of gear disengagement. Therefore, it is not good to prevent misoperation and is not conducive to ensuring the stability and safety of gear shifting. Therefore, in order to solve the above problems, a new push-type shift gearbox is proposed. Utility Model Content

[0004] The purpose of the utility model is to provide a novel push-type shift gearbox to solve the problem mentioned in the above background technology that the shift lever cannot be well limited or fixed after the gear shift, so that when external contact occurs, the shift lever is easy to move, which can easily cause the gear position to change and cause the gear to be out of gear, thereby failing to prevent misoperation and ensuring the stability and safety of the gear shift.

[0005] To achieve the above object, the utility model provides the following technical solutions: a novel push-type shift gearbox, comprising a housing, the housing comprising a gearbox body, the inner side of the gearbox body being movably connected with a shift lever;

[0006] The surface of the gearbox body is provided with an anti-disengagement mechanism, and the anti-disengagement mechanism includes a fixed seat, the fixed seat is fixedly connected to the surface of the gearbox body, the inner side of the fixed seat is movably connected with a movable rod, the surface of the movable rod is fixedly connected with a connecting rod, the surface of the gearbox body is fixedly connected with the fixed rod, the inner surface of the fixed rod is fixedly connected with a cylindrical cam, the surface of the cylindrical cam is provided with a first clamping groove, the surface of the cylindrical cam is provided with a second clamping groove, the surface of the cylindrical cam is provided with a third clamping groove, the inner side of the cylindrical cam is movably connected with a sleeve rod, the surface of the sleeve rod is fixedly connected with an extrusion block, the surface of the sleeve rod is fixedly connected with a limiting rod, the inner side of the sleeve rod is movably connected with a movable sleeve, the surface of the movable sleeve is fixedly connected with an inclined surface block, the surface of the movable sleeve is movably connected with a connecting plate, and the end of the connecting plate away from the movable sleeve is fixedly connected with a spring.

[0007] Preferably, the movable rod is movably connected to the fixing seat via a rotating shaft, and the fixing rod is in two groups fixedly connected to the surface of the gearbox body.

[0008] Preferably, the depth of the first card slot is greater than the depth of the second card slot, and the depth of the third card slot is greater than the depth of the first card slot.

[0009] Preferably, the limiting rod is movable inside the third slot, and the connecting plate and the fixing rod are movably connected.

[0010] Preferably, the shift lever is fixedly connected to the connecting plate, one end of the connecting plate is movably connected to the movable sleeve, and the other end of the connecting plate is fixedly connected to the shift lever.

[0011] Preferably, one end of the spring is fixedly connected to the gearbox body, and the other end of the spring is fixedly connected to the connecting plate.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The movable rod can be moved on the fixed seat by the movement of the movable rod, and the sleeve rod can be squeezed by the movement of the connecting rod, and then the sleeve rod can move on the inner side of the cylindrical cam, so that the extrusion block can squeeze the inclined surface block, so that the movable sleeve can drive the connecting plate to move, and cooperate with the elastic property of the spring, so that the movable sleeve can rotate, and then the inclined surface block can enter the inner side of the first slot, the second slot and the third slot, so that the movable sleeve can drive the shift rod to move, and the shift rod drives the meshing sleeve to move and shift gears. At the same time, through the setting of the first slot, the second slot and the third slot, when the inclined surface block is inserted, it is not easy to move and slip, so that the position of the shift rod can be limited, and the problem of gear disengagement is not easy to occur, which can reduce the situation of misoperation and is conducive to ensuring the safety and stability of gear shifting. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 It is a schematic diagram of a top view and cross-section of the structure of the utility model;

[0016] Figure 3 For this utility model Figure 2 A schematic diagram of the enlarged structure at A in the middle;

[0017] Figure 4 It is a schematic top view and cross-sectional view of the local structure of the connecting rod and the sleeve rod of the utility model;

[0018] Figure 5 It is a schematic top view and cross-sectional view of the local structure of the sleeve rod and the ramp block of the utility model;

[0019] Figure 6 It is a schematic top view of the cylindrical cam and the first slot of the utility model.

[0020] In the figure: 1, gearbox body; 11, shift lever; 2, fixed seat; 21, movable rod; 22, connecting rod; 23, fixed rod; 24, cylindrical cam; 25, first slot; 26, second slot; 27, third slot; 28, sleeve rod; 29, extrusion block; 210, limit rod; 211, movable sleeve; 212, ramp block; 213, connecting plate; 214, spring. DETAILED DESCRIPTION

[0021] 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 in 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.

[0022] See also Figure 1-6 , an embodiment provided by the utility model:

[0023] A novel push-type shift gearbox includes a housing, the housing includes a gearbox body 1, a shift rod 11 is movably connected to the inner side of the gearbox body 1, and the shift rod 11 is arranged so that when the shift rod 11 is operated to move, the engagement sleeve can be driven to move along the corresponding axial direction, thereby selecting different gear ratios, so as to complete the shift operation;

[0024] The surface of the gearbox body 1 is provided with an anti-slip mechanism, which includes a fixed seat 2, the fixed seat 2 is fixedly connected to the surface of the gearbox body 1, the inner side of the fixed seat 2 is movably connected with a movable rod 21, the surface of the movable rod 21 is fixedly connected with a connecting rod 22, the surface of the gearbox body 1 is fixedly connected with a fixed rod 23, the inner surface of the fixed rod 23 is fixedly connected with a cylindrical cam 24, the surface of the cylindrical cam 24 is provided with a first slot 25, the surface of the cylindrical cam 24 is provided with a second slot 26, the surface of the cylindrical cam 24 is provided with a third slot 27, the inner side of the cylindrical cam 24 is movably connected with a sleeve rod 28, the surface of the sleeve rod 28 is fixedly connected with an extrusion block 29, and the surface of the sleeve rod 28 is fixedly connected with a cylindrical cam 24. A limit rod 210 is connected, and a movable sleeve 211 is movably connected to the inner side of the sleeve rod 28. A slope block 212 is fixedly connected to the surface of the movable sleeve 211. A connecting plate 213 is movably connected to the surface of the movable sleeve 211. A spring 214 is fixedly connected to the end of the connecting plate 213 away from the movable sleeve 211. By setting the extrusion block 29, the slope block 212 can be squeezed, so that the slope block 212 can be inserted into the inner side of the first slot 25, the second slot 26 and the third slot 27. Then, the connecting plate 213 can drive the shift rod 11 to move on the inner side of the gearbox body 1 under the action of the movable sleeve 211, so that the engagement sleeve can be moved to different positions to achieve the effect of shifting.

[0025] Furthermore, the movable rod 21 is movably connected to the fixed seat 2 through the rotating shaft, and the fixed rod 23 is fixedly connected to the surface of the gearbox body 1 in two groups. Through the movement of the movable rod 21 on the surface of the fixed seat 2, the connecting rod 22 can move accordingly, and then the connecting rod 22 can squeeze the sleeve rod 28, making the gear shifting operation more convenient.

[0026] Furthermore, the depth of the first slot 25 is greater than the depth of the second slot 26, and the depth of the third slot 27 is greater than the depth of the first slot 25. By opening the first slot 25, the second slot 26 and the third slot 27, when the inclined block 212 is inserted into the inner side of the first slot 25, the second slot 26 and the third slot 27, the movable sleeve 211 and the connecting plate 213 can be limited, and the position of the shift lever 11 can be fixed, so that the shift lever 11 is not easy to move, and the engagement sleeve is not easy to move, thereby preventing the gearbox body 1 from being disengaged.

[0027] Furthermore, the limiting rod 210 moves on the inner side of the third slot 27, and the connecting plate 213 and the fixing rod 23 are movably connected. By setting the limiting rod 210, when the connecting rod 22 presses the sleeve rod 28, the limiting rod 210 will move on the inner side of the third slot 27 under the action of the sleeve rod 28, so as to limit the movement of the sleeve rod 28 in the cylindrical cam 24, thereby preventing the sleeve rod 28 from deviating or slipping, and thus enabling the extrusion block 29 to stably squeeze the inclined block 212.

[0028] Furthermore, the shift lever 11 is fixedly connected to the connecting plate 213, one end of the connecting plate 213 is movably connected to the movable sleeve 211, and the other end of the connecting plate 213 is fixedly connected to the shift lever 11. Through the movement of the connecting plate 213 on the fixed rod 23, when the inclined block 212 rotates and moves the movable sleeve 211 under the action of the extrusion block 29, the connecting plate 213 can move stably and drive the shift lever 11 to move, and it is not easy to deviate.

[0029] Furthermore, one end of the spring 214 is fixedly connected to the gearbox body 1, and the other end of the spring 214 is fixedly connected to the connecting plate 213. By setting the spring 214, the connecting plate 213 can be reset, so that the connecting plate 213 can apply a certain force to the movable sleeve 211, so that the inclined block 212 can be engaged in the first slot 25, the second slot 26 and the third slot 27, thereby fixing the shift lever 11 at the required position.

[0030] Working principle: when in use, by rotating the connecting rod 22, the movable rod 21 can move through the rotating shaft. The movement of the connecting rod 22 can squeeze the sleeve rod 28, so that the sleeve rod 28 can move on the inner side of the cylindrical cam 24, and the limiting rod 210 moves on the inner side of the third slot 27. The squeezing block 29 will squeeze the inclined surface block 212 during the movement of the sleeve rod 28, so that the inclined surface block 212 drives the movable sleeve 211 and the connecting plate 213 to move toward the end close to the shift rod 11, and then the connecting plate 213 moves on the surface of the fixed rod 23. At this time, the spring 214 is deformed, and the inclined surface block 212 separates from the third slot 27 during the movement. When the inclined surface block 212 is free from the constraint of the third slot 27, the movable sleeve 211 will rotate under the squeezing action of the squeezing block 29 and the rebound action of the spring 214. The first slot 25 is engaged with the inclined surface block 212 to fix the position of the shift lever 11, thereby switching the gear to a low gear; the connecting rod 22 is moved again to squeeze the sleeve rod 28, so that the inclined surface block 212 is disengaged from the inner side of the first slot 25, and enters the inner side of the second slot 26 under the rotation of the movable sleeve 211, thereby enabling the shift lever 11 to move and drive the engagement sleeve to move, thereby switching to neutral gear; the connecting rod 22 is moved again to squeeze the sleeve rod 28, and the inclined surface block 212 is disengaged from the second slot 26 under the squeezing action of the squeezing block 29, and enters the inner side of the third slot 27 under the rotation of the movable sleeve 211, thereby enabling the shift lever 11 to move and drive the engagement sleeve to move, thereby switching to a high gear.

[0031] The above are only preferred embodiments of the present invention and are not intended to limit the present invention in any form. Any ordinary technician in the industry can smoothly implement the present invention as shown in the drawings and above. However, any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the present invention using the technical content disclosed above are all equivalent embodiments of the present invention. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention are still within the protection scope of the technical solution of the present invention.

Claims

1. A novel push-type shift gearbox, comprising a housing, the housing comprising a gearbox body (1), the inner side of the gearbox body (1) being movably connected to a shift rod (11); It is characterized in that The surface of the gearbox body (1) is provided with an anti-slip mechanism, the anti-slip mechanism comprising a fixing seat (2), the fixing seat (2) being fixedly connected to the surface of the gearbox body (1), a movable rod (21) being movably connected to the inner side of the fixing seat (2), a connecting rod (22) being fixedly connected to the surface of the movable rod (21), a fixing rod (23) being fixedly connected to the surface of the gearbox body (1), a cylindrical cam (24) being fixedly connected to the inner surface of the fixing rod (23), a first clamping groove (25) being provided on the surface of the cylindrical cam (24), and a second clamping groove (26) being provided on the surface of the cylindrical cam (24). A third clamping groove (27) is formed on the surface of the cylindrical cam (24); a sleeve rod (28) is movably connected to the inner side of the cylindrical cam (24); an extrusion block (29) is fixedly connected to the surface of the sleeve rod (28); a limit rod (210) is fixedly connected to the surface of the sleeve rod (28); a movable sleeve (211) is movably connected to the inner side of the sleeve rod (28); a slope block (212) is fixedly connected to the surface of the movable sleeve (211); a connecting plate (213) is movably connected to the surface of the movable sleeve (211); and a spring (214) is fixedly connected to one end of the connecting plate (213) away from the movable sleeve (211).

2. A novel push-type shift gearbox according to claim 1, characterized in that: The movable rod (21) is movably connected to the fixed seat (2) via a rotating shaft, and the fixed rods (23) are fixedly connected to the surface of the gearbox body (1) in two groups.

3. A novel push-type shift transmission according to claim 1, characterized in that: The depth of the first card slot (25) is greater than the depth of the second card slot (26), and the depth of the third card slot (27) is greater than the depth of the first card slot (25).

4. A novel push-type shift transmission according to claim 1, characterized in that: The limiting rod (210) is movable inside the third clamping slot (27), and the connecting plate (213) and the fixing rod (23) are movably connected.

5. The novel push-type shift transmission according to claim 1 is characterized in that: The shift lever (11) and the connecting plate (213) are fixedly connected, one end of the connecting plate (213) is movably connected to the movable sleeve (211), and the other end of the connecting plate (213) is fixedly connected to the shift lever (11).

6. A novel push-type shift transmission according to claim 1, characterized in that: One end of the spring (214) is fixedly connected to the gearbox body (1), and the other end of the spring (214) is fixedly connected to the connecting plate (213).

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