A gear shifting structure for a steering switch and a steering switch for engineering machinery.

Abstract

This utility model discloses a gear shifting structure for a turn signal switch and a turn signal switch for engineering machinery. It includes a main body, a swing block, and a lever. A swing block is rotatably connected within the mounting cavity. The swing block is linked to the swing block via a linkage mechanism. A switching positioning mechanism for positioning the swing block at various linkage states is provided between the main body and the swing block. The swing block also has a shifting engagement mechanism that engages with a reset cam on the steering wheel. Rotation of the steering wheel actuates the reset cam, and the interaction between the reset cam and the shifting engagement mechanism controls the swing block to reset to the second linkage state position, thus linking the swing block from the left or right gear position to the neutral position. This utility model utilizes the rotation of the steering wheel to drive the reset cam, which in turn actuates the shifting engagement mechanism, thereby driving the swing block. The swing block then controls the swing block to reset, achieving an automatic gear shifting reset effect.

Description

Technical Field

[0001] This utility model relates to the field of steering switch technology for engineering machinery, specifically to a steering switch gear switching structure and a steering switch for engineering machinery. Background Technology

[0002] Chinese document CN219282387U discloses a multi-position shift switch, including a main body, a swing base, and a lever. The swing base is movably mounted in the mounting cavity of the main body, allowing it to swing laterally. The control end of the lever passes through the main body and forms a vertical rotational connection with the swing base, enabling the end of the control end to swing vertically up and down relative to the main body. A shift PCB board is mounted on the main body, with several sets of stationary contacts. The swing base has moving contact assemblies corresponding to the shift PCB board. When the lever is operated left or right, it drives the swing base to swing laterally left and right relative to the main body, causing the moving contact assembly to engage with different sets of stationary contacts, thereby achieving gear shifting. A limiting protrusion is formed at the end of the control end, and a gear locking groove is formed in the mounting cavity to engage with the limiting protrusion to form a gear self-locking mechanism. This multi-position shift switch has a gear self-locking function, which can effectively avoid safety hazards caused by misoperation. However, this solution is difficult to link with a steering wheel to achieve gear shifting and reset operations. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a gear shifting structure for a steering switch, which mainly solves the technical problem that existing steering switches are difficult to link with the steering wheel to achieve gear shifting and reset operations.

[0004] To achieve the above objectives, this utility model is implemented through the following technical solution: A shift switch gear switching structure includes a main body with a mounting cavity, a swing seat rotatably connected to the mounting cavity, and a lever extending into the mounting cavity and connected to the swing seat to control the swing seat to swing relative to the main body. The swing seat has switchable left-hand drive, neutral, and right-hand drive positions relative to the main body. A swing block is rotatably connected within the mounting cavity, and the swing block is linked to the swing seat via a linkage mechanism, thereby enabling the swing block to have a first linkage position corresponding to the left-hand drive position and a neutral position when the swing seat switches positions. The system includes a second linkage state position corresponding to the current state position and a third linkage state position corresponding to the right gear shifting position. A switching and positioning mechanism for positioning the various linkage state positions of the swing block is provided between the main body and the swing block. The swing block is provided with a shifting engagement mechanism for cooperating with the reset cam on the steering wheel. The rotation of the steering wheel drives the reset cam to move, and then the swing block is controlled to reset to the second linkage state position through the mutual cooperation between the reset cam and the shifting engagement mechanism, so that the linkage swing block returns from the left gear state position or the right gear state position to the neutral state position.

[0005] Furthermore, the gear shifting positioning mechanism includes a shifting positioning groove disposed in the mounting cavity and an elastic positioning pin disposed at one end of the corresponding shifting positioning groove of the swing block. The shifting positioning groove includes at least a left gear positioning groove, a neutral gear positioning groove and a right gear positioning groove. The elastic positioning pin is engaged with the left gear positioning groove, the neutral gear positioning groove or the right gear positioning groove to position the swing block in the corresponding left gear position, the neutral gear position and the right gear shifting position.

[0006] Furthermore, guide ramps are provided between the left gear positioning slot and the neutral gear positioning slot, as well as between the right gear positioning slot and the neutral gear positioning slot. Through the cooperation of the elastic positioning pin and the guide ramps, the swing block can automatically return to the second linkage position when it leaves the first linkage state position or the third linkage state position.

[0007] Furthermore, the shifting mechanism includes a left shift fork and a right shift fork positioned opposite each other at the end of the swing block away from the elastic positioning pin. A reset cam is configured between the left and right shift forks, and several raised ribs are evenly distributed on the reset cam. When the swing block is in the left-turn position, the right shift fork abuts against the raised ribs on the reset cam. When the steering wheel turns right, causing the reset cam to turn simultaneously, the raised ribs on the reset cam actuate the right shift fork to apply a swinging force to the swing block, thereby causing the elastic positioning pin to automatically disengage from the left-turn positioning groove. The swing block is engaged by the cooperation of the elastic positioning pin and the guide slope. The system automatically returns to the second linkage position and drives the swing block to reset to the neutral position through the linkage structure. When the swing block is in the right gear position, the left shift fork abuts against the rib on the reset cam. When the steering wheel turns right, the reset cam turns left simultaneously. The rib on the reset cam then pushes the left shift fork to apply a swing force to the swing block, causing the elastic positioning pin to automatically disengage from the right gear positioning groove. Under the interaction of the elastic positioning pin and the guide slope, the swing block automatically returns to the second linkage position and drives the swing block to reset to the neutral position through the linkage structure.

[0008] Furthermore, the left and right shift forks are rotatably connected to the swing block, and the left and right shift forks are respectively provided with a left shift fork limiting part and a right shift fork limiting part for limiting the opening angle of the left and right shift forks. An elastic reset member for automatically opening the left and right shift forks is installed on the swing block.

[0009] Furthermore, the elastic reset element is a torsion spring, with its two pins pressing against the left shift fork limit and the right shift fork limit respectively, so that the left shift fork and the right shift fork can automatically open to each other when the swing block is in the second linkage state position.

[0010] Furthermore, a linkage groove is provided on the pendulum block, and a linkage protrusion is provided on the bottom of the swing free end of the pendulum seat. The linkage protrusion is adapted to be movably embedded in the linkage groove, thereby forming a linkage structure for linking the pendulum block and the pendulum seat.

[0011] Based on the same inventive concept, this utility model also provides a steering switch for engineering machinery, including the gear shifting structure of the steering switch described above.

[0012] The above technical solution has the following advantages or beneficial effects:

[0013] In the gear shifting structure of the steering switch and the steering switch for engineering machinery described in this utility model, the swing seat can be controlled by a lever to rotate left and right relative to the main body to switch between left gear, neutral, and right gear positions. At the same time, a swing block that is linked to the swing seat is provided in the mounting cavity of the main body. Furthermore, a rotating engagement mechanism and a reset cam are provided between the swing block and the steering wheel. Thus, when the steering wheel is turned and the reset cam is driven, the reset cam can move the rotating engagement mechanism, thereby driving the swing block, and then the swing block controls the swing seat to reset, thereby achieving an automatic reset effect for gear shifting. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural schematic diagram of the steering switch for engineering machinery according to an embodiment of this utility model.

[0015] Figure 2 This is a schematic diagram of the internal structure of the steering switch for engineering machinery according to an embodiment of this utility model.

[0016] Figure 3 This is an exploded view of the internal structure of the steering switch for engineering machinery according to an embodiment of this utility model.

[0017] Figure 4 This is an exploded view of the internal structure of the steering switch for engineering machinery according to another embodiment of the present invention.

[0018] Figure 5 This is another exploded view of the internal structure of the steering switch for engineering machinery according to an embodiment of this utility model.

[0019] Figure 6 This is a structural schematic diagram of the swing seat in the left-turn state according to an embodiment of the present invention.

[0020] Figure 7 This is a structural schematic diagram of the swing seat in the right-hand rotation state according to an embodiment of this utility model.

[0021] Figure 8 This is a schematic diagram of the right-turn state of the steering switch of the engineering machinery according to an embodiment of this utility model.

[0022] Figure 9 This is a schematic diagram of the neutral position of the steering switch of the engineering machinery according to an embodiment of this utility model.

[0023] Figure 10 This is a schematic diagram of the left-turn state of the steering switch of the engineering machinery according to an embodiment of this utility model.

[0024] Label Explanation:

[0025] 1. Main body; 2. Swing seat; 3. Lever; 4. Swing block; 5. Reset cam; 6. Shifting engagement mechanism; 11. Mounting cavity; 21. Linkage protrusion; 41. Elastic positioning pin; 42. Linkage slide groove; 51. Rib; 61. Left shift fork; 62. Right shift fork; 63. Elastic reset component; 111. Left shift gear positioning groove; 112. Neutral shift gear positioning groove; 113. Right shift gear positioning groove; 114. Guide slope. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0027] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] Please refer to the appendix. Figure 1 To be continued Figure 10An embodiment of this utility model provides a gear switching structure for a turn signal switch, including a main body 1 with a mounting cavity 11, a swing seat 2 rotatably connected to the mounting cavity 11, and a lever 3 extending into the mounting cavity 11 and connected to the swing seat 2 to control the swing seat 2 to swing relative to the main body 1. The swing seat 2 has switchable left-hand drive, neutral, and right-hand drive positions relative to the main body 1. A swing block 4 is rotatably connected within the mounting cavity 11. The swing block 4 is linked to the swing seat 2 through a linkage structure, so that the swing block 4 has a position corresponding to the left-hand drive position when the swing seat 2 switches positions. The system includes a first linkage state position, a second linkage state position corresponding to the neutral state position, and a third linkage state position corresponding to the right gear shifting position. A switching and positioning mechanism for positioning the various linkage state positions of the swing block 4 is provided between the main body 1 and the swing block 4. The swing block 4 is provided with a shifting engagement mechanism 6 for cooperating with the reset cam 5 on the steering wheel. The rotation of the steering wheel drives the reset cam 5 to move, and then the swing block 4 is controlled to reset to the second linkage state position through the mutual cooperation of the reset cam 5 and the shifting engagement mechanism 6, so that the linkage swing seat 2 returns from the left gear state position or the right gear state position to the neutral state position. It is understood that in this embodiment, the swing seat 2 can be controlled by the lever 3 to rotate left and right relative to the main body 1 to switch between the left gear position, the neutral position, and the right gear position. At the same time, a swing block 4 that is linked with the swing seat 2 is provided in the mounting cavity 11 of the main body 1. Furthermore, a turn-shifting engagement mechanism 6 and a reset cam 5 that can cooperate with each other are provided between the swing block 4 and the steering wheel. Thus, when the steering wheel is turned and the reset cam 5 is driven, the reset cam 5 can move the turn-shifting engagement mechanism 6, thereby driving the swing block 4. The swing block 4 then controls the swing seat 2 to reset, thereby achieving the effect of automatic reset of gear shifting.

[0029] Please refer to the appendix. Figure 3In one preferred embodiment, the gear shifting positioning mechanism includes a shifting positioning groove disposed in the mounting cavity 11 and an elastic positioning pin 41 disposed at one end of the swing block 4 corresponding to the shifting positioning groove. The shifting positioning groove includes at least a left gear positioning groove 111, a neutral gear positioning groove 112, and a right gear positioning groove 113. Through the positioning cooperation of the elastic positioning pin 41 with the left gear positioning groove 111, the neutral gear positioning groove 112, or the right gear positioning groove 113, the swing block 2 is positioned in the corresponding left gear state position, the neutral state position, and the right gear shifting position. Preferably, a guide slope 114 is provided between the left gear positioning groove 111 and the neutral gear positioning groove 112, and between the right gear positioning groove 113 and the neutral gear positioning groove 112. Through the mutual cooperation of the elastic positioning pin 41 and the guide slope 114, the swing block 4 can automatically return to the second linkage state position when it is disengaged from the first linkage state position or the third linkage state position. In this embodiment, the above-described structure enables the swivel seat 2 to be positioned relatively stably in the left gear position, the neutral position, and the right gear switching position, and to switch smoothly between the three.

[0030] Please refer to the appendix. Figure 1 To be continued Figure 10 In one preferred embodiment, the shifting mechanism 6 includes a left shift fork 61 and a right shift fork 62, which are disposed opposite to each other at the other end of the swing block 4 away from the elastic positioning pin 41. The reset cam 5 is configured between the left shift fork 61 and the right shift fork 62, and a plurality of protruding ribs 51 are evenly distributed on the reset cam 5. When the swing block 2 is in the left turn position, the right shift fork 62 abuts against the protruding ribs 51 on the reset cam 5. When the steering wheel turns to the right, causing the reset cam 5 to turn to the right simultaneously, the protruding ribs 51 on the reset cam 5 push the right shift fork 62 to apply a swinging force to the swing block 4, thereby causing the elastic positioning pin 41 to automatically disengage from the left turn position positioning groove 111. The swing block 4 is in the position between the elastic positioning pin 41 and the guide. Under the mutual cooperation of the inclined plane 114, it automatically returns to the second linkage state position, and drives the swing block 2 to reset to the neutral state position through the linkage structure. When the swing seat 2 is in the right gear position, the left shift fork 61 and the protruding rib 51 on the reset cam 5 abut together, so that when the steering wheel turns right and drives the reset cam 5 to turn left at the same time, the protruding rib 51 on the reset cam 5 pushes the left shift fork 61 to apply a swing force to the swing block 4, thereby causing the elastic positioning pin 41 to automatically disengage from the right gear positioning groove 113. Under the mutual cooperation of the elastic positioning pin 41 and the guide inclined plane 114, the swing block 4 automatically returns to the second linkage state position, and drives the swing block 2 to reset to the neutral state position through the linkage structure.

[0031] Please refer to the appendix. Figure 5In one preferred embodiment, the left shift fork 61 and the right shift fork 62 are rotatably connected to the swing block 4, and the left shift fork 61 and the right shift fork 62 are respectively provided with a left shift fork limiting part and a right shift fork limiting part for limiting the opening angle of the left shift fork 61 and the right shift fork 62. An elastic reset member 63 for automatically opening the left shift fork 61 and the right shift fork 62 is installed on the swing block 4. Further, the elastic reset member 63 is a torsion spring, and the two leads of the torsion spring press against the left shift fork limiting part and the right shift fork limiting part respectively, so that the left shift fork 61 and the right shift fork 62 can automatically open to each other when the swing block 4 is in the second linkage state position. During use, the left fork 61 and right fork 62 are elastically rotatably connected to the swing block 4. Therefore, when the swing block 4 swings, the left fork 61 and right fork 62 can correspondingly twist to make room. When the swing block 4 moves to the second linkage position, the twisted left fork 61 and right fork 62 elastically abut against the corresponding inner wall, providing an effective reset force for the swing block 4 so that the swing block 4 can perform the reset action more smoothly. In addition, those skilled in the art should understand that in other embodiments, other elastic reset structures can also be provided to make the left fork 61 and right fork 62 automatically and elastically open to each other, and are not limited to the specific implementation disclosed in this embodiment. For example, two springs acting on the left fork 61 and right fork 62 respectively can also be provided.

[0032] Please refer to the appendix. Figure 2 Appendix Figure 3 In one preferred embodiment, the pendulum block 4 is provided with a linkage groove 42, and the bottom of the free swing end of the pendulum base 2 is provided with a linkage protrusion 21. The linkage protrusion 21 is adapted to be movably embedded in the linkage groove 42, thereby forming a linkage structure for linking the pendulum block 4 and the pendulum base 2. Specifically, in this embodiment, the linkage groove 42 is a long groove structure, and the linkage protrusion 21 is a cylindrical structure adapted to the long groove structure. The cylindrical linkage protrusion 21 can slide freely in the linkage groove 42, so that when the pendulum block 4 swings, it drives the pendulum base 2 to rotate through the linkage structure.

[0033] Please refer to the appendix. Figure 1 To be continued Figure 10 An embodiment of this utility model also provides a steering switch for engineering machinery, including the gear shifting structure of the steering switch described above.

[0034] Furthermore, other undescribed structures of this utility model can be designed with reference to the relevant structures in the prior art CN219282387U.

[0035] The above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model. Therefore, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

Claims

1. A shift switch gear switching structure, comprising a main body (1) having a mounting cavity (11), a swing seat (2) rotatably connected to the mounting cavity (11), and a lever (3) extending into the mounting cavity (11) and connected to the swing seat (2) to control the swing seat (2) to swing relative to the main body (1), characterized in that: The swing base (2) has switchable left-hand drive, neutral, and right-hand drive positions relative to the main body (1). A swing block (4) is rotatably connected within the mounting cavity (11). The swing block (4) is linked to the swing base (2) via a linkage structure, thereby enabling the swing block (4) to have a first linkage position corresponding to the left-hand drive position, a second linkage position corresponding to the neutral position, and a third linkage position corresponding to the right-hand drive position when the swing base (2) switches positions. (1) A switching positioning mechanism for positioning the various linkage state positions of the swing block (4) is provided between the swing block (4) and the swing block (4), and a shifting engagement mechanism (6) is provided on the swing block (4) for cooperating with the reset cam (5) on the steering wheel. The rotation of the steering wheel drives the reset cam (5) to move, and then the swing block (4) is controlled to reset to the second linkage state position through the mutual cooperation of the reset cam (5) and the shifting engagement mechanism (6), so that the linkage swing block (2) returns from the left gear state position or the right gear state position to the neutral state position.

2. The gear shifting structure of the turn signal switch according to claim 1, characterized in that: The gear shifting positioning mechanism includes a shifting positioning groove in the mounting cavity (11) and an elastic positioning pin (41) on the swing block (4) at one end of the shifting positioning groove. The shifting positioning groove includes at least a left gear positioning groove (111), a neutral gear positioning groove (112), and a right gear positioning groove (113). The elastic positioning pin (41) is positioned in the corresponding left gear position, neutral position, and right gear shifting position by positioning the swing block (2) with the left gear positioning groove (111), the neutral gear positioning groove (112), or the right gear positioning groove (113).

3. The gear shifting structure of the turn signal switch according to claim 2, characterized in that: Guide ramps (114) are provided between the left gear positioning groove (111) and the neutral gear positioning groove (112) and between the right gear positioning groove (113) and the neutral gear positioning groove (112). Through the cooperation of the elastic positioning pin (41) and the guide ramps (114), the swing block (4) can automatically return to the second linkage position when it leaves the first linkage position or the third linkage position.

4. The gear shifting structure of the turn signal switch according to claim 3, characterized in that: The shifting mechanism (6) includes a left shift fork (61) and a right shift fork (62) positioned opposite each other at the other end of the swing block (4) away from the elastic positioning pin (41). The reset cam (5) is configured between the left shift fork (61) and the right shift fork (62), and several ribs (51) are evenly distributed on the reset cam (5). When the swing block (2) is in the left turn position, the right shift fork (62) abuts against the ribs (51) on the reset cam (5), so that when the steering wheel turns to the right, causing the reset cam (5) to turn to the right simultaneously, the ribs (51) on the reset cam (5) push the right shift fork (62) to apply a swinging force to the swing block (4), thereby causing the elastic positioning pin (41) to automatically disengage from the left turn positioning groove (111). The swing block (4) is positioned between the elastic positioning pin (41) and the guide. Under the mutual cooperation of the inclined plane (114), it automatically returns to the second linkage state position, and drives the swing block (2) to reset to the neutral state position through the linkage structure. When the swing block (2) is in the right gear position, the left shift fork (61) and the rib (51) on the reset cam (5) abut together, so that when the steering wheel turns to the right, it drives the reset cam (5) to turn to the left at the same time. The rib (51) on the reset cam (5) pushes the left shift fork (61) to apply a swing force to the swing block (4), thereby causing the elastic positioning pin (41) to automatically disengage from the right gear positioning groove (113). Under the mutual cooperation of the elastic positioning pin (41) and the guide inclined plane (114), the swing block (4) automatically returns to the second linkage state position, and drives the swing block (2) to reset to the neutral state position through the linkage structure.

5. The gear shifting structure of the turn signal switch according to claim 4, characterized in that: The left shift fork (61) and the right shift fork (62) are rotatably connected to the swing block (4), and the left shift fork (61) and the right shift fork (62) are respectively provided with a left shift fork limiting part and a right shift fork limiting part for limiting the opening angle of the left shift fork (61) and the right shift fork (62), and an elastic reset member (63) for automatically opening the left shift fork (61) and the right shift fork (62) is installed on the swing block (4).

6. The gear shifting structure of the turn signal switch according to claim 5, characterized in that: The elastic reset component (63) is a torsion spring. The two pins of the torsion spring press against the left shift fork limit part and the right shift fork limit part respectively, so that the left shift fork (61) and the right shift fork (62) can automatically open to each other when the swing block (4) is in the second linkage state position.

7. The gear shifting structure of the turn signal switch according to claim 1, characterized in that: The swing block (4) is provided with a linkage groove (42), and the bottom of the swing free end of the swing seat (2) is provided with a linkage protrusion (21). The linkage protrusion (21) is adapted to be movably embedded in the linkage groove (42) to form a linkage structure for linking the swing block (4) and the swing seat (2).

8. A steering switch for engineering machinery, characterized in that: The gear shifting structure includes the steering switch as described in any one of claims 1 to 7.

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