Gear shifting switch and agricultural machine

Abstract

The invention belongs to the technical field of gear shifting structures, and provides a gear shifting switch and agricultural machinery, and the gear shifting switch comprises a shell which comprises at least two outer gear grooves formed in the outer surface and a mounting cavity formed in the shell; the gear shifting driving lever is movably arranged on the shell, the gear shifting driving lever comprises a clamping part, and the clamping part is selectively connected with the outer gear groove in a clamped mode; the gear disc is arranged in the shell and is provided with inner gear grooves of which the number is equal to that of the outer gear grooves; the gear shifting piece is movably arranged in the mounting cavity, and a triggering part selectively connected with the inner gear groove in a clamped mode is arranged on the gear shifting piece; and the signal processing unit is arranged in the shell, and the signal processing unit comprises a signal receiving piece. Compared with the prior art, by arranging the shell, the gear shifting driving lever, the gear disc, the gear shifting piece and the signal processing unit and enabling the gear shifting driving lever to be in linkage fit with the gear shifting piece, the gear shifting process is divided into three clear stages including the reverse gear stroke, the gear shifting stroke and the gear entering stroke, and the gear shifting operation logic is remarkably simplified.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of gear shifting structure, and particularly relates to a gear shifting switch and agricultural machinery. BACKGROUND

[0002] In the field of agricultural machinery, especially for large agricultural equipment such as tractors, the design and operation convenience of gear shifting switches directly affect the operation efficiency of the machine and the user experience of the driver. The traditional agricultural gear shifting switch structure is relatively complex, often containing multiple independent components, which not only increases the production cost, but also may lead to higher failure rate and maintenance difficulty. For example, in some traditional designs, in order to realize the multi-gear switching function, a complex mechanical linkage device needs to be set to ensure the accurate conversion between each gear. Such complexity not only exists in the physical structure, but also exists in the operation process, because the driver may need to perform a series of precise actions to complete the switching from one gear to another, which is not only time-consuming but also laborious for farmers who work for a long time.

[0003] In addition, the traditional agricultural gear shifting switch has deficiencies in providing clear and accurate gear feedback. Due to the lack of effective signal processing units or position sensing mechanisms, the driver sometimes cannot exactly know the current gear state, which is easy to cause misoperation, affect the work effect and even cause mechanical damage. At the same time, with the development of agricultural technology, the demand for improving the operation comfort and the automation level is increasing, and the existing gear shifting switch technology obviously cannot fully meet these demands.

[0004] Therefore, it is necessary to develop a new type of gear shifting switch with simplified structure, easy to operate and can provide reliable gear shifting signal feedback. This new type of gear shifting switch aims to optimize the internal component layout and interaction mode, reduce the operation steps, enhance the user experience, and realize more accurate gear control and state feedback through the integration of modern signal processing units, so as to improve the overall work efficiency and safety. The gear shifting switch described in the above-mentioned claim is designed and improved based on such background and technical needs. SUMMARY

[0005] The technical problem to be solved by the present application is to provide a gear shifting switch and agricultural machinery in view of the current situation of the prior art.

[0006] The technical scheme adopted by the present application to solve the above technical problem is: a gear shifting switch is provided, comprising: a housing comprising at least two outer gear slots provided on the outer surface, and a mounting cavity provided in the housing;

[0007] a gear shifting lever movably arranged on the housing, the gear shifting lever comprising a clamping portion, the clamping portion being selectively clamped with the outer gear slot;

[0008] a gear disc disposed in the housing and having an equal number of inner gear slots as the outer gear slots, the inner gear slots corresponding to the outer gear slots one by one;

[0009] a shifting piece movably disposed in the mounting cavity and linked with the shifting lever, the shifting piece being provided with a trigger part selectively engaged with the inner gear slot;

[0010] a signal processing unit disposed in the housing, the signal processing unit including a signal receiving part receiving the position of the trigger part and forming a shifting signal when the trigger part switches the inner gear slot engaged therewith;

[0011] the operating stroke of the shifting lever including a reverse stroke, a shifting stroke and a forward stroke; wherein,

[0012] when in the reverse stroke, the engaging part is disengaged from one of the outer gear slots and drives the trigger part to disengage from the corresponding inner gear slot;

[0013] when in the shifting stroke, the shifting lever rotates relative to the housing, so that the engaging part rotates above another one of the outer gear slots and drives the trigger part to rotate above the corresponding another one of the inner gear slots;

[0014] when in the forward stroke, the engaging part is engaged in the outer gear slot, so that the trigger part enters the corresponding inner gear slot and the signal receiving part receives the switching signal.

[0015] In the above-mentioned shifting switch, the shifting lever includes a first body part and a second body part intersectingly disposed, the engaging part is disposed at the end of the first body part, the other end of the first body part extends to the opposite side of the outer surface of the housing provided with the outer gear slots, one end of the shifting piece away from the inner gear slots penetrates the gear disc and the housing in sequence and forms a connecting part, one end of the second body part away from the first body part is provided with a connecting column, the connecting column is inserted in the connecting part to connect the shifting lever and the shifting piece.

[0016] In the above-mentioned shifting switch, a reset piece is movably inserted in the housing, the reset piece and the connecting part movably abut, for pushing the trigger part to engage with the corresponding inner gear slot when the shifting lever is in the forward stroke.

[0017] In the gear shift switch, the reset member comprises a reset column and a first elastic member, the reset column is movably inserted into the shell, the connecting portion is provided with a connecting groove, the opening of the connecting groove is arranged towards the reset column, and the first elastic member is accommodated in the connecting groove and located between the reset column and the connecting groove.

[0018] In the gear shift switch, the signal processing unit comprises a circuit board arranged in the mounting cavity, the signal receiving member is electrically connected with the circuit board, and the trigger portion is a magnet fixed on the gear shifting member.

[0019] In the gear shift switch, the outer surface of the shell is adjacent to three outer gear grooves, and the gear disc is provided with three inner gear grooves corresponding to the outer gear grooves.

[0020] In the gear shift switch, the width of at least one outer gear groove is greater than the width of the clamping portion, and the gear disc is rotatably arranged in the shell, so that the clamping portion can relatively move in the outer gear groove, and the gear disc and the gear shifting member are synchronously rotated relative to the shell while the clamping portion moves.

[0021] In the gear shift switch, the shell is provided with a mounting portion, the gear disc is provided with an abutting portion, the mounting portion is provided with a second elastic member, the abutting portion extends into the mounting portion and abuts against the second elastic member, and the abutting portion drives the second elastic member to elastically deform when the gear disc rotates relative to the shell.

[0022] In the gear shift switch, the shell is provided with a first limiting portion, the gear shifting lever is provided with a second limiting portion, and the first limiting portion and the second limiting portion abut against each other when the clamping portion is located in the outer gear groove, so as to limit the gear shifting lever.

[0023] The present application also provides an agricultural machine comprising the gear shift switch.

[0024] Compared with the prior art, the present application has the following beneficial effects:

[0025] (1) By arranging the shell, the gear shifting lever, the gear disc, the gear shifting member and the signal processing unit, and by linking the gear shifting lever and the gear shifting member, the gear shifting process is divided into three clear stages, i.e., the gear shifting-in stroke, the gear shifting stroke and the gear shifting-out stroke, so that the gear shifting operation logic is significantly simplified.

[0026] (2) The shift lever adopts the design that the first main body part intersects with the second main body part, and is connected with the connecting part of the shift part in the way of insertion, so that the close linkage between the lever and the shift part is realized. This design not only reduces the number of parts and simplifies the overall structure, but also enhances the transmission stability and avoids the shift failure caused by looseness or misalignment, thereby overcoming the shortcomings of the traditional shift mechanism, such as complexity and easy failure.

[0027] (3) By setting the reset part in the shell and making it abut against the connecting part of the shift part, the trigger part is actively pushed to accurately enter the inner gear slot in the gear-in stroke, so that the shift is ensured to be in place every time. This design improves the certainty of the shift action and the feedback of the hand feeling, effectively prevents the "false gear-in" phenomenon caused by improper operation, and improves the problems of the traditional shift switch, such as laborious operation and unclear feedback. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is a perspective view of a shift switch according to the present application.

[0029] Figure 2 is a plan view of Figure 1 .

[0030] Figure 3 is a sectional view of Figure 2 in the direction of A-A.

[0031] Figure 4 is a perspective view of Figure 1 after the upper cover is hidden.

[0032] Figure 5 is a partial sectional view of Figure 4 .

[0033] Figure 6 is a perspective view of the upper cover.

[0034] Figure 7 is a perspective view of the connection of the shift lever, the shift part and the reset part.

[0035] In the figure, 100 is a shell, 110 is an outer gear slot, 120 is a mounting cavity, 130 is a mounting part, 140 is a first limiting part, 150 is an upper cover, 160 is a base, 200 is a shift lever, 210 is a clamping part, 220 is a first main body part, 230 is a second main body part, 240 is a connecting column, 250 is a second limiting part, 260 is a shift lever piece, 300 is a gear disc, 310 is an inner gear slot, 320 is an abutting part, 400 is a shift part, 410 is a trigger part, 420 is a connecting part, 430 is a connecting slot, 500 is a reset part, and 510 is a reset column. DETAILED DESCRIPTION

[0036] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0037] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0038] like Figures 1 to 7 As shown, a shift switch of the present invention includes: a housing 100, a shift lever 200, a gear position plate 300, a shift component 400, and a signal processing unit.

[0039] Specifically, the housing 100 serves as the main component of the entire shift switch, with at least two external gear slots 110 on its outer surface and an installation cavity 120 inside the housing 100.

[0040] In one embodiment, the housing 100 consists of a top cover 150 and a base 160, which can be connected in a detachable manner by means of threaded connection or snap-fit, or fixed by means of welding, adhesive, etc. An outer gear slot 110 is provided on the outer surface of the top cover 150, and a mounting cavity 120 is located between the top cover 150 and the base 160, used to accommodate and fix the gear plate 300, the gear shifting component 400, and the signal processing unit.

[0041] The shift lever 200 is a component that enables gear shifting. It is movably mounted on the housing 100 and includes a locking part 210 that can selectively engage with at least two outer gear slots 110. The operator operates the shift lever 200 to engage the locking part 210 with the outer gear slots 110 at different positions on the housing 100, thereby completing the gear shifting operation.

[0042] In one embodiment, the shift lever 200 is further provided with a shift paddle 260, which serves as the force-bearing part of the shift lever 200, making it easier for the operator to apply force and facilitate gear switching of the shift switch.

[0043] The gear shift panel 300 is located inside the housing 100 and has the same number of inner gear shift slots 310 as the outer gear shift slots 110. These inner gear shift slots 310 correspond one-to-one with the outer gear shift slots 110.

[0044] The shift component 400, as a key component for triggering the shifting action, is movably disposed within the mounting cavity 120 and is linked with the shift lever 200. The shift component 400 is provided with a trigger part 410, which can selectively engage with the inner gear slot 310.

[0045] The signal processing unit is also located in the shell 100, including a signal receiving member, when the trigger part 410 is switched from one inner gear slot 310 to another, the signal receiving member detects the change and generates a corresponding gear shifting signal.

[0046] The operating stroke of the gear shifting lever 200 includes three stages of gear shifting stroke, gear shifting stroke and gear engaging stroke.

[0047] In the gear shifting stroke, the clamping part 210 is separated from the current outer gear slot 110, and the trigger part 410 is separated from the corresponding inner gear slot 310;

[0048] In the gear shifting stroke, the gear shifting lever 200 rotates relative to the shell 100, so that the clamping part 210 moves above the next outer gear slot 110, and the trigger part 410 reaches above the corresponding inner gear slot 310;

[0049] Finally, in the gear engaging stroke, the clamping part 210 is embedded in the new outer gear slot 110, and the trigger part 410 enters the corresponding inner gear slot 310, at which time the signal receiving member records the position change and sends a gear shifting signal.

[0050] In this scheme, by setting the shell 100, the gear shifting lever 200, the gear disc 300, the gear shifting part 400 and the signal processing unit, and connecting the gear shifting lever 200 and the gear shifting part 400, the gear shifting process is divided into three clear stages of gear shifting stroke, gear shifting stroke and gear engaging stroke, which significantly simplifies the gear shifting operation logic. At the same time, the clamping state of the trigger part 410 and the inner gear slot 310 is identified by the signal receiving member in real time and a gear shifting signal is generated, effectively solving the problem of fuzzy gear state feedback and easy misoperation in the traditional agricultural machinery gear shifting process, improving the accuracy and reliability of gear shifting.

[0051] Further, the gear shifting lever 200 includes first and second main body parts 220 and 230 arranged in intersection. The clamping part 210 is arranged at one end of the first main body part 220, and the other end of the first main body part 220 extends to the position on the opposite side of the outer surface of the shell 100, i.e. opposite to the side surface provided with the outer gear slot 110. The gear shifting part 400 is arranged to pass through the gear disc 300 and the shell 100 in sequence, and forms a connecting part 420. The second main body part 230 is provided with a connecting column 240 at the end away from the first main body part 220, which is inserted into the connecting part 420 to realize the connection between the gear shifting lever 200 and the gear shifting part 400.

[0052] Preferably, the first body part 220 and the second body part 230 are integrally formed, so that the shift lever 200 as a whole presents an L-shaped profile. The shift lever 200 adopts a design in which the first body part 220 intersects with the second body part 230, and is inserted into the connecting part 420 of the shift member 400 in a plug-in manner, so as to realize close linkage between the shift lever and the shift member 400. This design not only reduces the number of components and simplifies the overall structure, but also enhances the transmission stability and avoids the problem of gear shifting failure caused by looseness or misalignment, thereby overcoming the shortcomings of the traditional gear shifting mechanism, such as complexity and frequent failure.

[0053] The reset member 500 is movably inserted into the housing 100 and abuts against the connecting part 420, so as to push the trigger part 410 to be clamped with the corresponding low gear slot 310 when the shift lever 200 is in the low gear stroke.

[0054] By arranging the reset member 500 in the housing 100 and abutting it against the connecting part 420 of the shift member 400, the trigger part 410 is actively pushed to be accurately clamped in the low gear slot 310 in the low gear stroke, so as to ensure that the gear shifting is in place each time. This design improves the certainty of the gear shifting action and the feedback of the hand feeling, effectively prevents the phenomenon of "false low gear" caused by improper operation, and improves the problems of the traditional gear shifting switch, such as laborious operation and unclear feedback.

[0055] It is worth mentioning that the reset member 500 includes a reset column 510 and a first elastic member. The reset column 510 is movably inserted into the housing 100, and the connecting part 420 of the shift member 400 is provided with a connecting groove 430, the opening of the connecting groove 430 is arranged to face the reset column 510. The first elastic member is accommodated in the connecting groove 430 and located between the reset column 510 and the bottom wall of the connecting groove 430, so as to provide elastic support therebetween.

[0056] The first elastic member (not shown in the figure) is preferably a compression spring. The reset member 500 is combined with the first elastic member through the reset column 510, and forms an elastic pre-tightening structure by means of the connecting groove 430, so that the shift lever 200 can be automatically stabilized at the target gear after completing the gear shifting action. This elastic reset mechanism not only improves the smoothness of the gear shifting operation, but also significantly reduces the operation force required by the driver, effectively alleviates the operation fatigue caused by long-time operation, and thus solves the technical pain points of the traditional agricultural machinery gear shifting, such as laborious operation and poor human-machine interaction experience.

[0057] The signal processing unit includes a circuit board arranged in the mounting cavity 120, the signal receiving member is electrically connected with the circuit board, and the trigger part 410 is a magnet fixed on the shift member 400.

[0058] The signal receiving member can be one or more Hall effect sensors (or other magnetic sensitive elements such as magnetoresistance sensors) mounted on the circuit board, for non-contact detection of the position of the magnet fixed on the shift member 400 in different inner gear slots 310, thereby generating an electrical signal corresponding to the gear.

[0059] By designing the trigger portion 410 as a magnet and matching it with the signal receiving member (such as a Hall sensor) on the circuit board, non-contact detection of the shift position is achieved. This scheme avoids the risk of signal failure due to wear of traditional mechanical contacts, significantly improves the stability of signal acquisition and the service life of the system, and effectively solves the problem of gear misjudgment caused by poor electrical contact of traditional shift switches.

[0060] In one embodiment, the outer surface of the housing 100 is adjacent to three outer gear slots 110, and the gear disc 300 is provided with three inner gear slots 310 corresponding to the outer gear slots 110.

[0061] The three outer gear slots 110 and the three inner gear slots 310 correspond to each other, meeting the common three-gear (such as forward, neutral, and reverse) operation requirements of agricultural machinery. This layout ensures complete functionality while being compact in structure, clear in logic, easy for the driver to quickly identify and switch, reducing the complexity of operation, and meeting the actual needs of efficient and intuitive control of agricultural operations.

[0062] The width of at least one outer gear slot 110 is greater than the width of the clamping portion 210, and the gear disc 300 is rotatably arranged in the housing 100, so that the clamping portion 210 can move slightly relative to the outer gear slot 110. When the clamping portion 210 moves in the slot, the gear disc 300 and the shift member 400 are driven to rotate synchronously relative to the housing 100 as a whole.

[0063] The rotational connection between the gear disc 300 and the housing 100 can be achieved by providing a cylindrical shaft portion on the gear disc 300 and a columnar slot (or bearing hole) on the corresponding position of the housing 100, which is matched with the shape of the shaft portion, and inserting the cylindrical shaft portion into the columnar slot, thereby forming a rotatable support structure.

[0064] When the shift lever 200 moves in the outer gear slot 110 with a width greater than that of the clamping portion 210, it can drive the gear disc 300 to rotate because the trigger portion 410 on the shift member 400 and the inner gear slot 310 on the gear disc 300 are matched in width and profile. When the trigger portion 410 deflects with the shift action, its side will abut against the slot wall of the inner gear slot 310, thereby pushing the gear disc 300 to rotate relative to the housing 100.

[0065] By designing at least one outer gear slot 110 to be wider than the clamping part 210 and allowing the gear disc 300 to rotate freely within the housing 100, the clamping part 210 can still be slightly displaced within a single gear, and simultaneously drive the gear disc 300 and the trigger part 410 to produce a corresponding angular change. The signal receiving member (such as a Hall sensor) can thus detect different positions of the trigger part 410 within the same gear, output continuous or stepped electrical signals, and thus achieve fine adjustment of the operation state of the agricultural machine (such as the working speed or throttle opening), rather than just simple gear shifting.

[0066] Further, the housing 100 is provided with a mounting part 130, and the gear disc 300 is provided with an abutting part 320. The mounting part 130 is provided with a second elastic member, and the abutting part 320 extends into the mounting part 130 and abuts against the second elastic member. When the gear disc 300 rotates relative to the housing 100, the abutting part 320 pushes the second elastic member to cause elastic deformation thereof.

[0067] The second elastic member (not shown in the figure) is preferably a spring. By providing the mounting part 130 and the second elastic member in the housing 100, and making the abutting part 320 on the gear disc 300 cooperate with them, elastic damping action can be formed on the rotation of the gear disc 300. In addition, after the shifting operation is completed, when the external force applied to the shifting lever 200 (or the shifting tab 260) is removed, the restoring force of the second elastic member can drive the gear disc 300 to rotate back to the preset reference position, achieving the automatic reset function.

[0068] This structure not only improves the stability of the gear shifting process, but also provides clear tactile feedback: the driver can perceive the shifting process through the change of resistance during operation, thereby significantly enhancing the intuitiveness and control confidence of the operation, effectively making up for the lack of tactile feedback and automatic reset capability of the traditional gear shifting switch.

[0069] The housing 100 is provided with a first limiting part 140, and the shifting lever 200 is provided with a second limiting part 250. When the clamping part 210 is located in the outer gear slot 110, the first limiting part 140 and the second limiting part 250 abut against each other, for providing limiting to the shifting lever 200.

[0070] By providing the first limiting part 140 on the housing 100 and the second limiting part 250 on the shifting lever 200, the two abut against each other when the clamping part 210 is fully engaged, achieving mechanical limiting of the shifting lever 200. This design prevents the lever from being offset due to vibration or accidental contact, ensures reliable gear locking, enhances the stability of the entire machine in harsh working environments, and solves the problem of easy gear disengagement and poor safety after gear shifting of traditional agricultural machines.

[0071] The present scheme also proposes an agricultural machine, which can be a tractor, a harvester or a tiller, etc. The agricultural machine comprises the above-mentioned gear shifting switch.

[0072] The shift switch and its application in agricultural machinery provided by the scheme are aimed at the prominent problems of the existing shift mechanism of agricultural machinery (such as tractors), such as complex structure, laborious operation, fuzzy gear state feedback, and easy misoperation, and realize the technical effects of simplified structure, smooth operation, accurate gear recognition, and friendly man-machine interaction by optimizing the mechanical linkage structure and integrating the intelligent signal detection mechanism.

[0073] Specifically, the shift switch adopts a double-groove linkage design of an outer gear slot 110 and an inner gear slot 310 in cooperation, clearly divides the shift process into three stages of gear withdrawal stroke, shift stroke, and gear entry stroke, and combines multiple technical means such as elastic return, limiting locking, and magnetic induction signal acquisition, which not only significantly improves the reliability and operation feel of the shift action, but also effectively avoids the problems of unstable signals caused by wear of traditional mechanical contacts. At the same time, the modular and compact overall layout is convenient for installation and maintenance, and is particularly suitable for harsh working conditions such as severe vibration and complex environment in farmland operation.

[0074] After the shift switch is applied to agricultural machinery, the operation burden of the driver can be greatly reduced, the operation efficiency and safety can be improved, and the development trend of modern agricultural equipment towards intelligence, humanization and high reliability is fully met.

[0075] It should be noted that in the present application, descriptions such as "first", "second", "one", etc. are only for the purpose of description and cannot be understood as indicating or implying the relative importance of the indicated technical features or implying the number of the indicated technical features. Therefore, the features limited by "first" and "second" can be explicitly or implicitly included at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited. The terms "connection", "fixation", etc. should be understood broadly, for example, "fixation" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection through intermediate medium; can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0076] In addition, the technical solutions of each embodiment of the present application can be combined with each other, but it must be based on the fact that the ordinary skilled in the art can realize it, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor is it within the scope of protection required by the present application.

[0077] The specific embodiments described herein are merely illustrative of the spirit of the application. Various modifications or changes in the specific embodiments described herein can occur to those skilled in the art to which the application pertains without departing from the spirit of the application, and it is understood that such modifications or changes are to be considered as within the scope of the application as defined by the appended claims.

Claims

1. A shift switch, characterized in that, include: The housing includes at least two outer stop grooves disposed on its outer surface, and a mounting cavity disposed within the housing; A shift lever is movably mounted on the housing. The shift lever includes a locking part that selectively engages with the outer gear slot. A gear shift disc is disposed inside the housing and has an equal number of inner gear shift slots as the outer gear shift slots, wherein the inner gear shift slots correspond one-to-one with the outer gear shift slots. A shift component is movably disposed within the mounting cavity and linked with the shift lever. The shift component is provided with a trigger part that selectively engages with the inner gear slot. A signal processing unit is disposed within the housing. The signal processing unit includes a signal receiver. When the trigger part switches to the inner gear slot that it engages with, the signal receiver receives the position of the trigger part and generates a shift signal. The travel of the shift lever includes a downshift travel, a shift travel, and an engage travel; wherein, When in the downshift stroke, the engaging part disengages from one of the outer gear slots, and drives the trigger part to disengage from the corresponding inner gear slot. When in the shift stroke, the shift lever rotates relative to the housing, causing the locking part to rotate above another outer gear slot, and driving the trigger part to rotate above the corresponding inner gear slot; When in the gear shift stroke, the locking part engages into the outer gear slot, causing the trigger part to enter the corresponding inner gear slot, and the signal receiver to receive the switching signal.

2. A shift switch as described in claim 1, characterized in that, The shift lever includes a first main body and a second main body that are arranged intersectingly. The snap-fit ​​portion is disposed at the end of the first main body. The other end of the first main body extends to the opposite side of the outer surface of the housing where the outer gear slot is provided. The end of the shift member away from the inner gear slot passes through the gear plate and the housing in sequence to form a connecting portion. The end of the second main body away from the first main body is provided with a connecting post. The connecting post is inserted into the connecting portion to connect the shift lever and the shift member.

3. A shift switch as described in claim 2, characterized in that, A reset member is movably inserted into the housing. The reset member and the connecting part are movably pressed together, which is used to push the trigger part to engage with the corresponding inner gear slot when the shift lever is in the gear engagement stroke.

4. A shift switch as described in claim 3, characterized in that, The reset component includes a reset post and a first elastic member. The reset post is movably inserted into the housing. A connecting groove is provided on the connecting part. The opening of the connecting groove faces the reset post. The first elastic member is accommodated in the connecting groove and is located between the reset post and the connecting groove.

5. A shift switch as described in claim 1, characterized in that, The signal processing unit includes a circuit board disposed in the mounting cavity, the signal receiver is electrically connected to the circuit board, and the triggering part is a magnet fixed on the shifting component.

6. A shift switch as described in claim 1, characterized in that, The outer surface of the housing is provided with three adjacent outer gear slots, and the gear plate is provided with three inner gear slots that correspond one-to-one with the outer gear slots.

7. A shift switch as described in claim 1, characterized in that, At least one of the outer gear slots has a width greater than the width of the latching part, and the gear plate is rotatably disposed within the housing, so that the latching part can move relative to the outer gear slot, and while the latching part moves, it drives the gear plate and the shifting component to rotate synchronously relative to the housing.

8. A shift switch as described in claim 7, characterized in that, An installation part is provided inside the housing, a pressing part is provided on the gear shift plate, and a second elastic member is provided inside the installation part. The pressing part extends into the installation part and presses against the second elastic member. When the gear shift plate rotates relative to the housing, the pressing part drives the second elastic member to produce elastic deformation.

9. A shift switch as described in claim 1, characterized in that, The housing is provided with a first limiting part, and the shift lever is provided with a second limiting part. When the locking part is located in the outer gear slot, the first limiting part and the second limiting part abut against each other to provide a limiting for the shift lever.

10. An agricultural machine, characterized in that, Includes a shift switch as described in any one of claims 1 to 9.

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