Dual-mode unlocking device and harvester cover locking structure

Abstract

This invention provides a dual-mode unlocking device and a harvester cover locking structure. The dual-mode unlocking device includes a lock body, a knob handle, and a special tool. The lock body is equipped with a rotary unlocking component that can be used to unlock the lock body by rotating itself. One end of the rotary unlocking component is fixed with a limit step, and the end of the limit step away from the rotary unlocking component is fixed with a drive head. The knob handle and the special tool are interchangeably mounted on the rotary unlocking component. The knob handle and the limit step are detachably connected. Both the knob handle and the special tool are used to drive the drive head to rotate. By using this invention, the interchangeable mounting of the knob handle and the special tool on the rotary unlocking component realizes the interchangeability between a manual unlocking mode based on the knob handle and a special tool unlocking mode based on the special tool, meeting the different usage needs of users in different situations.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery cover lock technology, specifically to a dual-mode unlocking device and a harvester cover locking structure. Background Technology

[0002] The protective cover lock is used to secure the protective cover, ensuring it is firmly closed, isolating the internal moving parts from surrounding personnel, and preventing operators from contacting the internal components (such as flywheels, chains, belts, cutters, etc.). At the same time, it allows for normal unlocking when maintenance or other work is needed on the internal mechanisms, enabling the protective cover to be opened normally.

[0003] Research revealed that different users have varying needs regarding the opening of the cover lock. Some users prioritize ease of use, requiring the lock to be unlocked directly without external tools; others, concerned about safety and security against accidental operation, require a dedicated tool for unlocking. Traditional cover locks only support a single unlocking method: manual knob turning or using a special tool. Therefore, when different users, or even the same user, have varying needs for the cover lock in different situations, a single model cannot simultaneously meet all these diverse requirements. Utility Model Content

[0004] To solve at least one of the above technical problems, this utility model provides a dual-mode unlocking device and a harvester cover locking structure.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: This utility model provides a dual-mode unlocking device, including a lock body, a knob handle, and a special tool. The lock body is provided with a rotary unlocking component that can be used to unlock the lock body by rotating itself. One end of the rotary unlocking component is fixed with a limit step, and the end of the limit step away from the rotary unlocking component is fixed with a driving head. The knob handle and the special tool are interchangeably mounted on the rotary unlocking component. The knob handle and the limit step are detachably connected. Both the knob handle and the special tool are used to drive the driving head to rotate.

[0006] The beneficial effects of this utility model are: This invention utilizes a rotary unlocking component with a limiting step and a driving head at one end. Both the knob handle and the special tool can be driven by the driving head, allowing the knob handle and the special tool to be interchangeably mounted on the rotary unlocking component. This enables the interchangeability of a manual unlocking mode based on the knob handle and a special tool unlocking mode based on the special tool, meeting the different usage needs of users in different situations. Furthermore, the knob handle and the limiting step are detachably connected, allowing for both fixed installation and detachment of the knob handle. When the special tool is replaceable, this prevents the knob handle from falling off.

[0007] Based on the above technical solution, the present invention can be further improved as follows.

[0008] Furthermore, the drive head is a polygonal prism shape, and one end of the knob handle is provided with a transmission sleeve. The inner shape of the transmission sleeve matches the shape of the drive head, and the transmission sleeve is sleeved on the drive head.

[0009] The knob handle and the drive head are connected by a polygonal mesh, which makes installation convenient. The large transmission surface ensures even force distribution and reduces wear on the knob handle.

[0010] Furthermore, an elastic hook is fixed at the end of the transmission sleeve away from the knob handle, and the elastic hook is engaged with the edge of the limiting step.

[0011] The elastic hooks secure the edge of the limiting step, making installation convenient and stable, and preventing the knob handle from falling off.

[0012] Furthermore, the elastic hooks are provided in multiple quantities, and the multiple elastic hooks are evenly distributed along the circumference of the sleeve.

[0013] The design facilitates the fastening and locking of the limit step from multiple angles, improving stability and preventing the knob handle from falling off.

[0014] Furthermore, the end of the drive head away from the limiting step is provided with a drive groove, the shape of which matches the shape of the special tool, and the special tool can be inserted into the drive groove and engage with the drive groove in a transmission manner.

[0015] Specialized tools can be made using insert-type wrenches, which reduces the size of the tools and makes them easier to store.

[0016] Furthermore, the cross-sectional shape of the drive groove is polygonal, star-shaped, or quincunx-shaped.

[0017] It is easy to match special-shaped polygonal wrenches, star wrenches, or box wrenches, improving the compatibility between special tools and drive slots and ensuring good safety.

[0018] Furthermore, the lock body includes a lock body frame, on the same side of which are provided a first locking shaft, a first locking plate, a second locking shaft, a second locking plate, and a lever plate. The first locking plate is sleeved on the first locking shaft and connected to the first locking shaft via a first torsion spring. The second locking plate is sleeved on the second locking shaft and connected to the second locking shaft via a second torsion spring. The first locking plate and the second locking plate are interlocked with each other. The rotating unlocking component is rotatably connected to the lock body frame. The other end of the rotating unlocking component passes through the lock body frame and is fixedly connected to the lever plate. The lever plate is used to rotate under the drive of the rotating unlocking component, thereby causing the first locking plate to rotate away from the second locking plate.

[0019] The first locking plate and the second locking plate are interlocked to lock the second locking plate. The first locking plate is moved away from the second locking plate by a lever to unlock it. The structure is simple and reliable.

[0020] Furthermore, the lock body frame includes a horizontal plate and a vertical plate. The horizontal plate is fixed to the lower edge of the vertical plate and forms an L-shaped structure with the vertical plate. The first lock shaft and the second lock shaft are disposed on the horizontal plate, and the rotating unlocking component is disposed on the vertical plate.

[0021] This design allows the rotating unlocking component and the lock pin to be located on opposite sides of the lock body frame, avoiding interference between the unlocking operation space and the lock pin installation space, thus facilitating operation.

[0022] Furthermore, a mounting bracket is fixed to the lower side of the horizontal plate.

[0023] The mounting bracket facilitates the installation of the lock body and avoids interference caused by the overlapping of the installation structure and the unlocking operation space of the rotary unlocking component.

[0024] This utility model provides a harvester cover locking structure, including the above-mentioned dual-mode unlocking device, and also includes a cover body, a locking post and a frame. The lock body is fixedly installed on the cover body, the locking post is fixedly installed on the frame, and the lock body and the locking post are locked together.

[0025] The lock body is locked to the lock pin, making it easy to lock the opening and closing side of the cover body to the frame; it realizes the interchangeability of manual unlocking mode based on knob handle and special tool unlocking mode based on special tool, meeting the different usage needs of users in different situations. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the dual-mode unlocking device of this utility model.

[0027] Figure 2 This is a schematic diagram of a knob handle mounted on a rotary unlocking component.

[0028] Figure 3 This is a schematic diagram of the knob handle.

[0029] Figure 4 A schematic diagram of a special tool mounted on a rotary unlocking component.

[0030] Figure 5 This is a schematic diagram of the lock body.

[0031] Figure 6 This is a schematic diagram of the lock body on the side away from the knob handle.

[0032] Figure 7 This is a schematic diagram of the locking structure of the harvester cover of this utility model.

[0033] In the accompanying drawings, the technical features represented by each reference numeral are as follows: 1-Rotary unlocking component; 2-Limiting step; 3-Drive head; 4-Knob handle; 5-Special tool; 6-Transmission sleeve; 7-Elastic hook; 8-Drive groove; 9-Lock body frame; 10-First locking shaft; 11-First locking plate; 12-Second locking shaft; 13-Second locking plate; 14-Pulley; 15-Mounting bracket; 20-Shield body; 21-Locking column; 22-Frame. Detailed Implementation

[0034] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0035] This utility model refers to Figure 1-7 .

[0036] Example 1, as Figure 1-6 As shown: This utility model provides a dual-mode unlocking device, including a lock body, a knob handle 4, and a special tool 5. The lock body is provided with a rotary unlocking component 1, which can be used to unlock the lock body by rotating itself. One end of the rotary unlocking component 1 is fixed with a limiting step 2, and the end of the limiting step 2 away from the rotary unlocking component 1 is fixed with a driving head 3. The knob handle 4 and the special tool 5 can be interchangeably installed on the rotary unlocking component 1. The knob handle 4 and the limiting step 2 are detachably connected. Both the knob handle 4 and the special tool 5 are used to drive the driving head 3 to rotate.

[0037] principle: During installation, the lock body is fixed to the harvester's guard, and a locking pin 21 is fixed to the harvester's body. The lock body and locking pin 21 are locked together. The locking structure of the lock body and locking pin 21 is irrelevant to the technical problem solved by this utility model. Based on the limitation of the rotary unlocking component 1, various knob locks in the prior art can be selected. Unlocking the lock body requires rotating the rotary unlocking component 1. However, due to the elastic constraint of the lock body itself and the lack of a force-assisting structure on the rotary unlocking component 1, ordinary manual force cannot turn the rotary unlocking component 1. A knob handle 4 or a special tool 5 is required.

[0038] When users require the lock to be unlocked without external tools for ease of use, a knob handle 4 can be installed, and the special tool 5 can be stored away. The detachable connection between the knob handle 4 and the limiting step 2 ensures that the knob handle 4 will not fall off or be lost without deliberate disassembly. When unlocking is needed, the user turns the knob handle 4, which in turn drives the drive head 3 to rotate, thereby rotating the unlocking component 1 and unlocking the lock body.

[0039] When a user requires the use of a special external tool 5 to unlock the lock body for reasons of safety and anti-theft, the user can retract the knob handle 4 and place the special tool 5 in a designated location. There is no fixed structure between the special tool 5 and the rotary unlocking component 1, so it will not be left on the component. To unlock, the user takes out the special tool 5, engages it with the drive head 3, and rotates it. The tool 5 then drives the drive head 3 to rotate, thus rotating the rotary unlocking component 1 and unlocking the lock body. After unlocking, the special tool 5 can be easily removed and taken away. The special tool 5 can be an insert-type polygonal wrench, a socket wrench, etc.

[0040] In summary, by adopting this utility model, a limiting step 2 and a driving head 3 are set at one end of the rotary unlocking component 1. The knob handle 4 and the special tool 5 can both be driven and cooperate with the driving head 3. Thus, the knob handle 4 and the special tool 5 can be installed interchangeably on the rotary unlocking component 1, realizing the interchangeability of the manual unlocking mode based on the knob handle 4 and the special tool 5 unlocking mode based on the special tool 5, meeting the different usage needs of users in different situations. In addition, the knob handle 4 and the limiting step 2 are detachably connected, realizing the fixed installation and detachability of the knob handle 4. When the special tool 5 can be replaced, the knob handle 4 is prevented from falling off.

[0041] Furthermore, the drive head 3 is a polygonal prism shape, and one end of the knob handle 4 is provided with a transmission sleeve 6. The inner shape of the transmission sleeve 6 matches the shape of the drive head 3, and the transmission sleeve 6 is sleeved on the drive head 3.

[0042] The knob handle 4 and the drive head 3 are connected by a polygonal mesh, which makes installation convenient. The large transmission surface and uniform force distribution reduce the wear of the knob handle 4.

[0043] Furthermore, an elastic hook 7 is fixed to one end of the transmission sleeve 6 away from the knob handle 4, and the elastic hook 7 is fastened to the edge of the limiting step 2.

[0044] The elastic hook 7 is used to fasten the edge of the limiting step 2, which is convenient to install, has good stability, and prevents the knob handle 4 from falling off.

[0045] Furthermore, the elastic hooks 7 are provided in multiples, and the multiple elastic hooks 7 are evenly distributed along the circumference of the sleeve.

[0046] The multiple positions of the edge of the locking and limiting step 2 facilitate the fastening and tightening of the hook, improving stability and preventing the knob handle 4 from falling off.

[0047] Furthermore, the end of the drive head 3 away from the limiting step 2 is provided with a drive groove 8. The shape of the drive groove 8 matches the shape of the special tool 5. The special tool 5 can be inserted into the drive groove 8 and engage with the drive groove 8 in a transmission manner.

[0048] Special tool 5 can be an insert wrench, which reduces the size of special tool 5 and makes it easier to store.

[0049] Furthermore, the cross-sectional shape of the drive groove 8 is polygonal, star-shaped, or quincunx-shaped.

[0050] It is easy to match special-shaped polygonal wrenches, star wrenches, or box wrenches, etc., which improves the matching degree between special tool 5 and drive slot 8 and ensures good safety.

[0051] Furthermore, the lock body includes a lock body frame 9. On the same side of the lock body frame 9, there are a first locking shaft 10, a first locking plate 11, a second locking shaft 12, a second locking plate 13, and a lever plate 14. The first locking plate 11 is sleeved on the first locking shaft 10 and connected to the first locking shaft 10 through a first torsion spring. The second locking plate 13 is sleeved on the second locking shaft 12 and connected to the second locking shaft 12 through a second torsion spring. The first locking plate 11 and the second locking plate 13 are interlocked with each other. The rotating unlocking member 1 is rotatably connected to the lock body frame 9. The other end of the rotating unlocking member 1 passes through the lock body frame 9 and is fixedly connected to the lever plate 14. The lever plate 14 is used to rotate under the drive of the rotating unlocking member 1, thereby causing the first locking plate 11 to rotate away from the second locking plate 13.

[0052] Note: The first locking plate 11 extends towards the lever plate 14, and the first torsion spring can drive the first locking plate 11 to rotate towards the second locking shaft 12; the second locking plate 13 extends towards the first locking plate 11 and engages with it, and the second torsion spring can drive the second locking plate 13 to rotate away from the lever plate 14; under the elastic force of the second torsion spring, the thrust of the second locking plate 13 on the first locking plate 11 is almost perpendicular to the contact surface between the two, and since the second locking plate 13 and the first locking plate 11 are engaged, the normal of their contact surface is almost towards the first locking shaft 10. That is, the thrust of the second locking plate 13 on the first locking plate 11 is towards the first locking shaft 10, and this thrust cannot push the second locking plate 13 to rotate, thus achieving the locking of the first locking plate 11 on the second locking plate 13. The second locking plate 13 is provided with a locking hook structure, which can be used to lock the locking pin 21. When the lever 14 moves the first locking plate 11 away from the second locking plate 13, the second locking plate 13 rotates away from the lever 14 under the force of the second torsion spring, thus unlocking the device.

[0053] Specifically, with Figure 5 With the orientation as a reference, when locked, the locking pin 21 enters the U-shaped locking hook structure of the second locking plate 13, simultaneously pushing the second locking plate 13 to rotate clockwise against the first torsion spring. The second locking plate 13 pushes the first locking plate 11 to rotate counterclockwise against the first torsion spring. Then, the first torsion spring drives the first locking plate 11 to rotate clockwise, and the pointed end of the first locking plate 11 engages in the groove of the second locking plate 13 (i.e., Figure 5 (Position), to achieve locking. When unlocking, the lever 14 moves the first locking plate 11 counterclockwise away from the second locking plate 13, and then the second locking plate 13 rotates counterclockwise under the action of the second torsion spring, so that the locking hook on the second locking plate 13 faces outward (i.e. away from the lever 14), and the locking pin 21 is released.

[0054] The first locking plate 11 and the second locking plate 13 are interlocked to lock the second locking plate 13. The first locking plate 11 is moved away from the second locking plate 13 by the lever 14 to unlock it. The structure is simple and reliable.

[0055] Furthermore, the lock body frame 9 includes a horizontal plate and a vertical plate. The horizontal plate is fixed to the lower edge of the vertical plate and forms an L-shaped structure with the vertical plate. The first locking shaft 10 and the second locking shaft 12 are disposed on the horizontal plate, and the rotating unlocking component 1 is disposed on the vertical plate.

[0056] Note: The orientation of the horizontal and vertical boards is based on the orientation shown in the attached diagram and does not represent the actual orientation during use.

[0057] This design allows the rotating unlocking component 1 and the locking pin 21 to be located on opposite sides of the lock body frame 9, avoiding interference between the unlocking operation space and the installation space of the locking pin 21, thus facilitating operation.

[0058] Furthermore, a mounting bracket 15 is fixed to the lower side of the horizontal plate.

[0059] Preferably, the mounting bracket 15 has an inverted L-shaped structure.

[0060] The mounting bracket 15 facilitates the installation of the lock body and avoids interference caused by the overlap of the installation structure and the unlocking operation space of the rotary unlocking component 1.

[0061] Example 2, as Figure 7 As shown: This utility model provides a harvester cover locking structure, including the above-mentioned dual-mode unlocking device, and also includes a cover body 20, a locking post 21 and a frame 22. The lock body is fixedly installed on the cover body 20, the locking post 21 is fixedly installed on the frame 22, and the lock body and the locking post 21 are locked together.

[0062] Note: In the attached drawings, the outline of the shield body 20 is represented by dashed lines, and the frame 22 structure is expressed in perspective.

[0063] The lock body is locked to the lock pin 21, which makes it easy to lock the opening and closing side of the cover body 20 onto the frame 22; it realizes the interchangeability of the manual unlocking mode based on the knob handle 4 and the special tool 5 unlocking mode based on the special tool 5, which meets the different usage needs of users in different situations.

[0064] In the description of this utility model, it should be understood that if descriptive terms indicating orientation, direction, or positional relationship appear, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," etc., the orientation or positional relationship indicated in this specification is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of understanding this utility model and simplifying the description, and does not indicate or imply that the part, element, or whole referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this utility model.

[0065] Furthermore, if sequential descriptive terms such as "first," "second," etc., appear, their purpose in this specification is for ease of understanding or simplification. For example, to distinguish multiple technical features of the same type or function, which must be mentioned separately, this specification may use prefixes or suffixes to differentiate them. Therefore, they should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, features defined with "first," "second," etc., may explicitly or implicitly include at least one of those features. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0066] In this utility model, if descriptive terms describing structural relationships are used, such as "installation," "connection," "joining," and "fixing," they should be interpreted broadly unless otherwise explicitly specified and limited. For example, "installation," "connection," and "joining" can refer to a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication of two components or the interaction between two components. "Fixing" can refer to an integral fixation or a detachable fixation using fasteners; it can be a direct fixation or a fixation through an intermediate medium. For those skilled in the art, the specific meaning of the above descriptive terms in this utility model can be understood based on the specific circumstances, the context, and the coherence of the preceding and following text.

[0067] In this utility model, if descriptive terms containing subordinate or connecting meanings appear, such as "above" or "below" the second feature, they should not be interpreted restrictively unless otherwise explicitly specified and limited. For example, "above" or "below" can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. For those skilled in the art, the specific meaning of the above descriptive terms in this utility model can be understood according to the specific circumstances, the context, and the coherence of the preceding and following text.

[0068] Furthermore, "above," "on top of," and "above" the first feature in relation to the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "under," and "below" the first feature in relation to the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0069] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. The illustrative expressions of the above terms in this specification do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments, examples, and features described in this specification, and such combinations or integrations should all fall within the scope of the present invention.

[0070] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Variations, modifications, substitutions, and modifications made by those skilled in the art to the above embodiments within the scope of information available through public channels and in conjunction with the technical teachings given in this application are still covered within the protection scope of this application.

Claims

1. A dual-mode unlocking device, characterized in that: The lock includes a lock body, a knob handle (4), and a special tool (5). The lock body is provided with a rotary unlocking component (1) that can be used to unlock the lock body by rotating itself. One end of the rotary unlocking component (1) is fixed with a limiting step (2), and the end of the limiting step (2) away from the rotary unlocking component (1) is fixed with a driving head (3). The knob handle (4) and the special tool (5) are interchangeably installed on the rotary unlocking component (1). The knob handle (4) and the limiting step (2) are detachably connected. The knob handle (4) and the special tool (5) are both used to drive the driving head (3) to rotate.

2. The dual-mode unlocking device according to claim 1, characterized in that: The drive head (3) is a polygonal prism, and one end of the knob handle (4) is provided with a transmission sleeve (6). The inner shape of the transmission sleeve (6) matches the shape of the drive head (3), and the transmission sleeve (6) is sleeved on the drive head (3).

3. The dual-mode unlocking device according to claim 2, characterized in that: The transmission sleeve (6) is fixed with an elastic hook (7) at the end away from the knob handle (4), and the elastic hook (7) is fastened to the edge of the limiting step (2).

4. The dual-mode unlocking device according to claim 3, characterized in that: The elastic hooks (7) are provided in multiple ways, and the multiple elastic hooks (7) are evenly distributed along the circumference of the sleeve.

5. The dual-mode unlocking device according to claim 2, characterized in that: The drive head (3) has a drive groove (8) at one end away from the limiting step (2). The shape of the drive groove (8) matches the shape of the special tool (5). The special tool (5) can be inserted into the drive groove (8) and engage with the drive groove (8) in a transmission manner.

6. The dual-mode unlocking device according to claim 5, characterized in that: The cross-sectional shape of the drive groove (8) is polygonal, star-shaped or plum blossom-shaped.

7. The dual-mode unlocking device according to claim 1, characterized in that: The lock body includes a lock body frame (9). On the same side of the lock body frame (9), there are a first lock shaft (10), a first lock plate (11), a second lock shaft (12), a second lock plate (13), and a lever plate (14). The first lock plate (11) is sleeved on the first lock shaft (10) and connected to the first lock shaft (10) through a first torsion spring. The second lock plate (13) is sleeved on the second lock shaft (12) and connected to the second lock shaft (12) through a second torsion spring. The first lock plate (11) and the second lock plate (13) are engaged with each other. The rotating unlocking component (1) is rotatably connected to the lock body frame (9). The other end of the rotating unlocking component (1) passes through the lock body frame (9) and is fixedly connected to the lever plate (14). The lever plate (14) is used to rotate under the drive of the rotating unlocking component (1) to make the first lock plate (11) rotate away from the second lock plate (13).

8. The dual-mode unlocking device according to claim 7, characterized in that: The lock frame (9) includes a horizontal plate and a vertical plate. The horizontal plate is fixed to the lower edge of the vertical plate and forms an L-shaped structure with the vertical plate. The first lock shaft (10) and the second lock shaft (12) are located on the horizontal plate, and the rotating unlocking component (1) is located on the vertical plate.

9. The dual-mode unlocking device according to claim 8, characterized in that: A mounting bracket (15) is also fixed to the lower side of the horizontal plate.

10. A harvester cover locking structure, characterized in that: The dual-mode unlocking device according to any one of claims 1-9 further includes a protective cover body (20), a locking pin (21) and a frame (22), wherein the lock body is fixedly installed on the protective cover body (20), the locking pin (21) is fixedly installed on the frame (22), and the lock body and the locking pin (21) are locked together.

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