Minimalist keypad lock

Abstract

This invention discloses a minimalist keypad combination lock, comprising a lock shell, a handle, a keypad, a clutch mechanism disposed within the lock shell, an unlocking plate, and a zeroing mechanism. The handle is connected to the clutch mechanism. The lock shell has keyholes, and the keypad is located in the corresponding keyhole. An elastic positioning structure is provided between the keypad and the lock shell, enabling the keypad to be positioned at different heights when locking or unlocking. The keypad has a locking element one and a locking element two, with different angles and heights. When the keypad is pressed, locking element one disengages from the unlocking plate, allowing the unlocking plate to trigger the clutch mechanism through the push of elastic element one. This allows the handle to rotate the lock cylinder via the clutch mechanism, thereby unlocking the lock. This design not only greatly simplifies the lock's structure but also improves its reliability, reduces its size, and achieves miniaturization, thus enhancing the product's competitiveness.

Description

Technical Field

[0001] This invention relates to a mechanical combination lock, and more particularly to a minimalist keypad combination lock. Background Technology

[0002] Currently, combination locks are widely available on the market due to their ease of operation and good anti-theft effect. However, ordinary electronic combination locks require battery power to operate normally, leading to the emergence of many mechanical combination locks (Patent No.: CN200920008462, Patent Name: Intelligent Mechanical Combination Lock Cylinder). However, these mechanical combination locks unlock by using buttons combined with a movable plate, stepping hook, and positioning hook. This not only results in a complex structure but also a large size. Furthermore, changing the combination requires a key and a key-changing shaft to move a clearing plate, making the key-changing structure and operation complex as well.

[0003] Therefore, the applicant designed a minimalist keypad combination lock to solve the above problems. Summary of the Invention

[0004] To overcome the shortcomings of existing technologies, this invention provides a minimalist keypad combination lock. The technical solution adopted by this invention to solve its technical problem is: This minimalist keypad combination lock includes a lock case, a handle, keys, a clutch mechanism housed within the lock case, an unlocking plate, and a zeroing mechanism. The handle is connected to the clutch mechanism. The lock case has keyholes, and the keys are located in corresponding keyholes. An elastic positioning structure exists between the keys and the lock case, allowing the keys to be positioned at different heights when locking or unlocking. The keys have two locking components, one at an angle and the other at a height. The locking component one engages with the unlocking plate, restricting its movement. An elastic component one, capable of pushing the unlocking plate, is located between the unlocking plate and the lock case. The zeroing mechanism... The lock housing is equipped with a second elastic element that can reset the zeroing frame. The zeroing frame has a lifting part. When the coded button is pressed, the first locking element disengages from the unlocking plate, so that the unlocking plate can be pushed by the first elastic element to trigger the clutch mechanism to engage, so that the handle can drive the lock cylinder to rotate through the clutch mechanism, thereby unlocking. When the non-coded button is pressed, the second locking element of the non-coded button can engage with the unlocking plate to restrict the movement of the unlocking plate. When unlocking, the unlocking plate can be moved and reset by the action of the clutch mechanism. At the same time, the zeroing frame can be moved by the action of the clutch mechanism to lift the pressed button and reset it.

[0005] The elastic positioning structure includes an elastic wire fixed inside the lock housing, and two slots, one at a different height, set on the button. When the button is pressed, the elastic wire can be engaged in slot one or slot two, thereby enabling the button to be fixed at different heights when locking or unlocking.

[0006] The button includes a main body, a pressing part, and a neck. The main body includes four planes that are perpendicular to each other. Locking member one and locking member two are respectively located on two adjacent planes. The other two planes are provided with groove one and groove two. The key hole is a corresponding square so that the main body cannot rotate when it is located in the key hole, and the button can rotate when the neck is located in the key hole.

[0007] The zeroing frame is provided with a lifting part for changing codes. The position of the lifting part is higher than that of the top lifting part, so as to lift the button and place the neck in the key hole. The zeroing frame is provided with a reset surface for pressing the button to reset it after changing codes.

[0008] The clutch mechanism includes a clutch seat, a connecting seat rotatably connected to the clutch seat, and a clutch plate disposed on the clutch seat. The clutch seat is connected to the handle, and the connecting seat is connected to the lock cylinder. The unlocking plate can push the clutch plate to move so that the clutch plate engages with the connecting seat, thereby allowing the clutch seat to rotate together with the connecting seat.

[0009] The clutch seat has a shaft hole and a clutch hole that communicates with the shaft hole. One end of the connecting seat is rotatably connected to the shaft hole, and the clutch plate is located in the clutch hole. One end of the connecting seat has a slot that can engage with the clutch plate. The clutch plate is reset by an elastic structure.

[0010] The elastic structure includes a clutch spring, a positioning block disposed in the clutch hole, and a limiting groove disposed in the clutch plate. The clutch spring and the positioning block are both located in the limiting groove. One end of the clutch spring abuts against the groove wall of the limiting groove, and the other end of the clutch spring abuts against the positioning block.

[0011] The clutch seat is provided with a pushing part that can squeeze the zeroing frame to move, so that the zeroing frame can lift the button and reset it through the lifting part.

[0012] The connecting seat is fixed with a limiting piece, the lock housing is provided with a resettable key, the outer side of the clutch seat is provided with a key change ridge, and one side of the key change ridge is provided with a key change ridge groove. The limiting piece can abut against the key change ridge to prevent the key change ridge from being pressed, and when the key change ridge is pressed, the key change ridge can pass through the key change ridge groove.

[0013] The clutch seat is provided with a guide groove, and the end of the unlocking plate can be inserted into the guide groove. When the clutch seat rotates, the groove wall of the guide groove can squeeze the end, thereby causing the unlocking plate to exit the guide groove and reset.

[0014] The beneficial effects of this invention are as follows: This invention uses coded buttons to restrict the movement of the unlocking plate in conjunction with the clutch mechanism, thereby realizing unlocking or locking. Then, through the cooperation of the clutch mechanism with the unlocking plate and the zeroing frame, the buttons are reset after unlocking and the unlocking plate itself is reset. This not only greatly simplifies the structure of the lock, but also improves the reliability of the lock, reduces the size of the lock, realizes the miniaturization of the lock, and improves the competitiveness of the product. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 This is a structural view of the combination lock; Figure 2 This is a view of the internal structure of the combination lock; Figure 3 This is an exploded view of the combination lock; Figure 4 This is a structural view of the zeroing rack; Figure 5 This is a structural view of the unlocking plate; Figure 6 This is the structural view of the button; Figure 7 This is the structural view of the button from the other direction; Figure 8 This is a structural view of the base; Figure 9 This is a structural view of the shell. Detailed Implementation

[0017] The advantages and features of this disclosure, as well as its implementation methods, will be illustrated by the following embodiments described with reference to the accompanying drawings. However, this disclosure may be embodied in different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be comprehensive and complete, and will fully convey the scope of this disclosure to those skilled in the art. Furthermore, this disclosure is limited only by the scope of the claims.

[0018] The shapes, dimensions, scales, angles, and numbers disclosed in the accompanying drawings used to describe embodiments of this disclosure are merely examples, and therefore this disclosure is not limited to the details shown. Throughout this specification, the same reference numerals refer to the same elements. In the following description, detailed descriptions of relevant known functions or configurations will be omitted where it is determined that such detailed descriptions would unnecessarily obscure the focus of this disclosure. Where the terms “comprising,” “having,” and “including” are used in this specification, additional components may be added unless “only” is used. Unless otherwise indicated, singular terms may include plural forms.

[0019] When interpreting components, even if not explicitly described, the components are understood to include a range of tolerances.

[0020] When describing positional relationships, such as "on," "above," "below," and "adjacent to," one or more parts may be arranged between two other parts unless "immediately following" or "directly" is used.

[0021] When describing temporal relationships, such as when time sequence is described as “after,” “following,” “next,” and “before,” discontinuous cases may be included unless “exactly” or “directly” is used.

[0022] It should be understood that although the terms “first,” “second,” etc., may be used herein to describe various elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from other elements. For example, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element, without departing from the scope of this disclosure.

[0023] As will be fully understood by those skilled in the art, the features of the different embodiments of this disclosure may be coupled or combined with each other in part or in whole, and may cooperate with each other and be technically driven in various ways. The embodiments of this disclosure may be implemented independently of each other, or may be implemented together in an interdependent relationship.

[0024] Reference Figures 1 to 9This invention discloses a minimalist keypad combination lock, including a lock housing 1, a handle 2, a keypad 3, a clutch mechanism disposed within the lock housing 1, an unlocking plate 4, and a zeroing frame 5. The handle 2 is connected to the clutch mechanism. The lock housing 1 is a square iron box. To facilitate manufacturing, it includes a housing 100 and a base plate 101. The lock housing 1 has a keyhole 102. Specifically, the keyhole 102 is located on the surface of the housing 100. The keypad 3 is located in the corresponding keyhole 102, and an elastic positioning structure is provided between the keypad 3 and the lock housing 1, so that the keypad 3 can be located at different heights when locking or unlocking. Of course, one end of the keypad 3 is exposed in the keyhole 102 for easy pressing. The keypad 3 has a locking element 301 and a locking mechanism. In section 302, the locking elements 301 and 302 have different angular and height positions. The locking element 301 of the coded button 3 can engage with the unlocking plate 4 to restrict its movement. Specifically, the unlocking plate 4 has a limiting groove 400 on its side. Both locking elements 301 and 302 are protrusions. Therefore, when the corresponding protrusion engages in the corresponding limiting groove 400, it can restrict the movement of the unlocking plate 4. An elastic element 6 is provided between the unlocking plate 4 and the lock housing 1 to push the unlocking plate 4 to move. An elastic element 7 is provided between the zeroing frame 5 and the lock housing 1 to reset the zeroing frame 5. The zeroing frame 5 has a lifting part 500. After the coded button 3 is pressed... Figure 2 All buttons 3 are in the coded state. The locking element 301 disengages from the unlocking plate 4, so the unlocking plate 4 can be triggered by the elastic element 6 to engage the clutch mechanism, allowing the handle 2 to drive the lock cylinder (not shown in the figure) to rotate through the clutch mechanism, thereby unlocking. When a non-coded button 3 is pressed, the locking element 302 of the non-coded button 3 can engage with the unlocking plate 4 to restrict the movement of the unlocking plate 4. When unlocking, the unlocking plate 4 can move and reset through the action of the clutch mechanism. At the same time, the zeroing frame 5 can move through the action of the clutch mechanism to lift the pressed button 3 and reset it.

[0025] As a specific structure, the base plate 101 has guide posts 105, and the button 3 has guide holes that cooperate with the guide posts 105, so as to ensure that the button 3 does not shift when rising or falling.

[0026] The principle of the above structure is as follows: When the lock is locked, the position of button 3 is set to position one. At this time, the locking part 301 of the coded button 3 faces the unlocking plate 4 and is at the same height as the unlocking plate 4. Therefore, the locking part 301 is engaged in the corresponding limiting groove 400, thereby locking the unlocking plate 4 and restricting its movement. The angle of the non-coded button 3 is different from that of the coded button 3. Therefore, the locking part 301 of the non-coded button 3 is not facing the unlocking plate 4 and is not engaged in the limiting groove 400. However, the locking part 302 of the non-coded button 3 faces the unlocking plate 4, but the position of the locking part 302 is higher than that of the locking part 301, and thus also higher than that of the unlocking plate 4. Therefore, the locking part 302 is not engaged in the limiting groove 400 at this time. In position one, the unlocking plate 4 is located between the zeroing frame 5 and the button 3, and is restricted from moving by the coded button 3, so it will not interact with the clutch mechanism, and the lifting part 500 of the zeroing frame 5 will not contact the button 3.

[0027] In the above, the surface of the lock case 1, which is also the exposed side of the button 3, is defined as the top, while the bottom surface of the lock case 1 is defined as the bottom. Therefore, the position is relative to the surface or bottom surface of the lock case 1.

[0028] When unlocking is required, first press the correct code, that is, press the code-setting button 3. There is no order in which they are pressed. For example, if there are 9 buttons representing the numbers 1 to 9, where 1, 2, 5, and 6 are the code-setting buttons, then you only need to press these four buttons 3. At this time, the code-setting button 3 descends to position two, and the locking part 301 of the code-setting button 3 also descends to disengage from the limiting groove 400. At this time, the unlocking plate 4 moves under the action of the elastic part 6, triggering the clutch mechanism to engage, so that the handle 2 can drive the lock cylinder to rotate through the clutch mechanism, thereby unlocking. At this time, the zeroing frame 5 can move under the action of the clutch mechanism. Of course, the direction of movement of the zeroing frame 5 at this time is opposite to the direction of movement of the unlocking plate 4 when unlocking. After the zeroing frame 5 moves, the lifting part 500 can contact the four pressed buttons 3 and lift them back to position one. At the same time, the unlocking plate 4 can also move in the opposite direction under the action of the clutch mechanism to reset.

[0029] If someone accidentally presses the wrong button 3 or tries to find the correct button 3, pressing a non-coded button 3 will cause the non-coded button 3 to descend to position two. The locking element 302 will also descend and engage with the limiting groove 400. Even if the correct button 3 is subsequently entered, the lock will not open. Only manually turning the handle 2 will activate the clutch mechanism, moving the zeroing frame 5 to return all buttons 3 to position one. In this case, the clutch mechanism is not engaged by the unlocking plate 4, so the handle 2 simply rotates freely and cannot rotate the lock cylinder, thus preventing unlocking. Only after the buttons 3 return to position one can the lock be unlocked by pressing the correct button 3.

[0030] This application completely abandons the unlocking structure of button 3 combined with movable plate, stepping hook and positioning hook. The present invention uses coded button 3 to restrict the movement of unlocking plate 4 and cooperate with clutch mechanism to realize unlocking or locking. Then, through the cooperation of clutch mechanism with unlocking plate 4 and zeroing frame 5, the button 3 is reset after unlocking and the unlocking plate 4 itself is reset, which simplifies the structure and reduces the size.

[0031] like Figure 3 As shown in the figure, as a specific embodiment, the clutch mechanism includes a clutch seat 8, a connecting seat 9 rotatably connected to the clutch seat 8, and a clutch plate 10 disposed on the clutch seat 8. The clutch seat 8 is connected to the handle 2, and the connecting seat 9 is connected to the lock cylinder through a square branch. The lock cylinder is an ordinary lock cylinder, so its specific structure is not described in detail.

[0032] Therefore, when unlocking, after pressing all the coded buttons 3, the locking element 301 disengages from the unlocking plate 4. Thus, the unlocking plate 4 can be pushed by the elastic element 6 to move the clutch plate 10, causing the clutch plate 10 to engage with the connecting seat 9. That is, the clutch mechanism is engaged, so that the clutch seat 8 can rotate together with the connecting seat 9. Therefore, when the handle 2 is turned, it can drive the clutch seat 8 and the connecting seat 9 to rotate together. The connecting seat 9 can then drive the lock cylinder to rotate and unlock. If the clutch mechanism is not engaged, when the handle 2 is turned, the handle 2 can only drive the clutch seat 8 to rotate, while the connecting seat 9 does not rotate, thus the lock cannot be unlocked.

[0033] As a further specific structure, the clutch seat 8 is provided with a shaft hole 800 and a clutch hole 801 communicating with the shaft hole 800. One end of the connecting seat 9 is rotatably connected to the shaft hole 800, and the clutch plate 10 is located in the clutch hole 801. One end of the connecting seat 9 is provided with a slot 900 that can engage with the clutch plate 10. The clutch plate 10 is reset by an elastic structure. Through the above structure, the clutch seat 8 is connected to the connecting seat 9 in a clutch-type manner through the clutch plate 10. Specifically, one end of the connecting seat 9 is provided with a turntable 901, the clutch hole 801 is located on one side of the turntable 901, and the bottom surface of the shaft hole 800 is provided with a bottom hole 802. The turntable 901 is rotatably connected in the shaft hole 800, and the connecting seat 9 extends out through the bottom hole 802. The diameter of the turntable 901 is larger than that of the bottom hole 802, thereby ensuring that the turntable 901 will not detach from the bottom hole 802. Of course, for ease of manufacturing and assembly, the clutch seat 8 includes an upper cover 803 and a base 804 connected to the upper cover 803 by screws. The base 804 has a clutch groove, and the shaft hole 800 is located on the base 804. The clutch groove and the upper cover 803 constitute the clutch hole 801.

[0034] As a further specific structure, the elastic structure includes a clutch spring 11, a positioning block 805 disposed in the clutch hole 801, and a limiting groove 1000 disposed in the clutch plate 10. The clutch spring 11 and the positioning block 805 are both located in the limiting groove 1000. One end of the clutch spring 11 abuts against the groove wall of the limiting groove 1000, and the other end of the clutch spring 11 abuts against the positioning block 805. With the above structure, when locked, one end of the clutch plate 10 is located outside the clutch hole 801 and not engaged in the slot 900 due to the action of the clutch spring 11. When pressed by the unlocking plate 4, the clutch plate 10 moves along the clutch hole 801, compressing the clutch spring 11, and thus engages in the slot 900, so that the clutch seat 8 can be together with the connecting seat 9.

[0035] In a specific embodiment, the bottom surface of the unlocking plate 4 is provided with an unlocking block 401. When unlocking, the unlocking plate 4 moves, and the unlocking block 401 can squeeze the clutch plate 10 into the slot 900. At the same time, the clutch seat 8 is provided with a guide groove 806. The end of the unlocking plate 4 can be inserted into the guide groove 806. When the handle 2 is rotated, the handle 2 drives the clutch seat 8 to rotate. The groove wall of the guide groove 806 can squeeze the end, thereby causing the unlocking plate 4 to exit the guide groove 806 and reset, thus realizing unlocking. In the above-mentioned design, the guide groove 806 is preferably a V-shaped groove, and the end of the unlocking plate 4 is a corresponding triangle.

[0036] In a specific embodiment, the clutch seat 8 is provided with a pushing part 807 that can squeeze the zeroing frame 5 to move, so that the zeroing frame 5 can lift and reset the button 3 through the lifting part 500. The pushing part 807 is a notch surface provided on the notch of the clutch seat 8. One end of the zeroing frame 5 is located in the notch and in contact with the notch surface. When the clutch seat 8 rotates, the notch surface rotates, thereby squeezing the zeroing frame 5 to move it. The notch surface is preferably a convex V-shaped surface. When locked, the convex edge of the convex V-shaped surface contacts the zeroing frame 5 to restrict the movement of the zeroing frame 5. When the clutch seat 8 rotates, the convex V-shaped surface can squeeze the zeroing frame 5 in a guiding manner, avoiding easy jamming when the notch surface is flat.

[0037] In a specific embodiment, the elastic positioning structure includes an elastic wire 12 fixed inside the lock housing 1, and two grooves 303 and 304 at different heights on the button 3. The elastic wire 12 is preferably a spring wire, and is fixedly positioned by several pressure blocks 104 disposed inside the housing 100. Each pressure block 104 has a pressure groove 103, and the elastic wire 12 is provided with several U-shaped rings 1200. The U-shaped rings 1200 are fixed between the pressure groove and the base plate 101. The first groove 303... Located below slot 2 304, when locked, button 3 is in position 1, where slot 1 303 is engaged with elastic wire 12. When unlocking, button 3 is pressed down and descends to position 2. Elastic wire 12 is squeezed by button 3 and engaged with slot 2 304, thus temporarily positioning itself. When handle 2 is turned to unlock, button 3 is pushed up by the lifting part 500 of the zeroing frame 5, thus returning to position 1 where slot 1 303 is engaged with elastic wire 12.

[0038] As a specific structure, the button 3 includes a main body 305, a pressing part 306, and a neck 307. The main body 305 includes four planes that are perpendicular to each other. The locking member 301 and the locking member 302 are respectively located on two adjacent planes, and the other two planes are provided with a groove 303 and a groove 304. The keyhole 102 is square, so that the main body 305 cannot rotate when it is located in the keyhole 102, and the button 3 can rotate when the neck 307 is located in the keyhole 102. The zeroing frame 5 is provided with a lifting part 501 for changing codes. The position of the lifting part 501 is higher than the position of the lifting part 500. During code switching, the zeroing frame 5 moves further, and the lifting part 501 presses the bottom surface of the button 3, thereby lifting the button 3 from position one upwards so that the neck 307 is located in the key hole 102. Specifically, both the lifting part 501 and the lifting part 500 have inclined surfaces, and both press the bottom surface of the button 3 by means of the inclined surfaces. At this time, the elastic wire 12 will also move along the groove wall of the groove 303 and be located at the edge of the groove wall or disengage from the groove 303 and be located on the bottom outside of the button 3. When the neck 307 is located in the key hole 102, the button 3 can rotate, thereby realizing code switching. Because the neck 307 has a small outline, the neck 307 of this application is designed as a cylinder, so it can rotate in the square button 3.

[0039] Of course, after the code change is completed, the zeroing frame 5 is provided with a reset surface 502 for pressing the button 3 to reset it after the code change. The reset surface 502 is the inclined surface on the triangular block. The reset surface 502 will press the stepped surface on the button 3, thereby lowering the position of the button 3 to position one and keeping it in a locked state.

[0040] As a specific example, a limiting piece 902 is fixed on the connecting seat 9. The limiting piece 902 has a hexagonal hole, and the connecting seat 9 has a hexagonal platform that mates with the hexagonal hole. Therefore, the limiting piece 902 can rotate with the limiting piece 902. The lock housing 1 has a resettable key 13, and the outer side of the clutch seat 8 has a key 808. A key 13 has a key 1300 on one side. The limiting piece 902 can abut against the key 13 to prevent the key 13 from being pressed. When the key 13 is pressed, The code-changing protrusion 808 can pass through the code-changing groove 1300. Specifically, when the handle 2 and clutch seat 8 rotate 90 degrees, the code-changing protrusion 808 is blocked by the code-changing key 13, so the clutch seat 8 cannot rotate a larger angle. When the code-changing key 13 is pressed down, the code-changing groove 1300 and the code-changing protrusion 808 are level, so the handle 2 and clutch seat 8 can rotate a larger angle, about 135 degrees, at which time the code can be changed. The code-changing key 13 is an outsourced existing technology product, which is reset by a spring, so its specific structure is not described in detail.

[0041] The principle of code changing is briefly described as follows: When changing the code, the correct password must be entered first. At this time, the code setting button 3 releases the restriction on the unlocking plate 4. Under the push of the elastic element 6, the unlocking plate 4 drives the clutch plate 10 to move and engage with the slot 900, thereby connecting the clutch seat 8 and the connecting seat 9 into one unit. Under the drive of the handle 2, the clutch seat 8, the connecting seat 9 and the limiting plate 902 will also rotate together. During the rotation, the clutch seat 8 will reset the unlocking plate 4, and the pushing part 807 of the clutch seat 8 will also rotate and press the zeroing frame 5. This movement causes the lifting part 500 to lift and reset the coded button 3. Simultaneously, the limit piece 902 disengages from the position restricting the code-changing button 13. At this point, the user can press the code-changing button 13 with their other hand. The handle 2 can then be rotated further, causing the code-changing protrusion 808 to pass through the code-changing groove 1300. Releasing the code-changing button 13 allows it to reset under the action of the code-changing spring. As the clutch seat 8 continues to rotate, the pushing part 807 rotates at a greater angle, further pushing the zeroing frame 5 to move. The lifting section 501 will compress all the buttons 3, causing them to rise, thereby pushing the buttons 3 upwards from position one until the neck 307 is positioned in the keyhole 102. At this time, all buttons 3 can be rotated and recoded. For example, a coded button 3 can be rotated 90 degrees so that its locking part 2 302 faces the unlocking plate 4, becoming a non-coded button 3. Alternatively, a previously non-coded button 3 can be rotated 90 degrees in the opposite direction so that its locking part 1 301 faces the unlocking plate 4, becoming a coded button 3. After coding is completed... When handle 2 is released, handle 2 will reverse and reset under the action of torsion spring. At this time, clutch seat 8, connecting seat 9 and limit plate 902 will also reset, and thus the pushing part 807 will also reset. At this time, the zeroing frame 5 will reset under the action of elastic element 7 and abut against the pushing part 807. At this time, the reset surface 502 will press the stepped surface on button 3, thereby lowering the position of button 3 to position one. At this time, the pressing part 306 of button 3 is located in key hole 102, so button 3 cannot be rotated. At this time, the entire lock remains in the locked state.

[0042] The foregoing has provided a detailed description of a minimalist button 3-key combination lock provided by the embodiments of the present invention. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A minimal key combination lock, characterized in that: The lock includes a lock housing, a handle, a button, a clutch mechanism housed within the lock housing, an unlocking plate, and a zeroing mechanism. The handle is connected to the clutch mechanism. The lock housing has keyholes, and the button is located in a corresponding keyhole. An elastic positioning structure is provided between the button and the lock housing to allow the button to be positioned at different heights when locking or unlocking. The button has two locking components, a first locking component and a second locking component. The first locking component and the second locking component have different angles and heights. The first locking component of the button can engage with the unlocking plate to restrict its movement. An elastic component is provided between the unlocking plate and the lock housing to push the unlocking plate. A zeroing mechanism is provided between the zeroing mechanism and the lock housing. There is a second elastic element that can reset the zeroing frame. The zeroing frame is provided with a lifting part. When the coded button is pressed, the first locking element disengages from the unlocking plate. Thus, the unlocking plate can be pushed by the first elastic element to trigger the clutch mechanism to engage, so that the handle can drive the lock cylinder to rotate through the clutch mechanism, thereby realizing unlocking. When the non-coded button is pressed, the second locking element of the non-coded button can be locked with the unlocking plate to restrict the movement of the unlocking plate. When unlocking, the unlocking plate can be moved and reset by the action of the clutch mechanism. At the same time, the zeroing frame can be moved by the action of the clutch mechanism to lift the pressed button and reset it.

2. The minimalist key combination lock of claim 1, wherein: The elastic positioning structure includes an elastic wire fixed inside the lock housing, and two slots, one at a different height, set on the button. When the button is pressed, the elastic wire can be engaged in slot one or slot two, thereby enabling the button to be fixed at different heights when locking or unlocking.

3. The minimal key combination lock of claim 2, wherein: The button includes a main body, a pressing part, and a neck. The main body includes four planes that are perpendicular to each other. Locking member one and locking member two are respectively located on two adjacent planes. The other two planes are provided with groove one and groove two. The key hole is a corresponding square so that the main body cannot rotate when it is located in the key hole, and the button can rotate when the neck is located in the key hole.

4. The minimal key combination lock of claim 3, wherein: The zeroing frame is provided with a lifting part for changing codes. The position of the lifting part is higher than that of the top lifting part, so as to lift the button and place the neck in the key hole. The zeroing frame is provided with a reset surface for pressing the button to reset it after changing codes.

5. The minimalist keypad combination lock according to claim 1, characterized in that: The clutch mechanism includes a clutch seat, a connecting seat rotatably connected to the clutch seat, and a clutch plate disposed on the clutch seat. The clutch seat is connected to the handle, and the connecting seat is connected to the lock cylinder. The unlocking plate can push the clutch plate to move so that the clutch plate engages with the connecting seat, thereby allowing the clutch seat to rotate together with the connecting seat.

6. The minimalist keypad combination lock according to claim 5, characterized in that: The clutch seat has a shaft hole and a clutch hole that communicates with the shaft hole. One end of the connecting seat is rotatably connected to the shaft hole, and the clutch plate is located in the clutch hole. One end of the connecting seat has a slot that can engage with the clutch plate. The clutch plate is reset by an elastic structure.

7. The minimalist keypad combination lock according to claim 6, characterized in that: The elastic structure includes a clutch spring, a positioning block disposed in the clutch hole, and a limiting groove disposed in the clutch plate. The clutch spring and the positioning block are both located in the limiting groove. One end of the clutch spring abuts against the groove wall of the limiting groove, and the other end of the clutch spring abuts against the positioning block.

8. The minimalist keypad combination lock according to claim 5, characterized in that: The clutch seat is provided with a pushing part that can squeeze the zeroing frame to move, so that the zeroing frame can lift the button and reset it through the lifting part.

9. The minimalist keypad combination lock according to claim 5, characterized in that: The connecting seat is fixed with a limiting piece, the lock housing is provided with a resettable key, the outer side of the clutch seat is provided with a key change ridge, and one side of the key change ridge is provided with a key change ridge groove. The limiting piece can abut against the key change ridge to prevent the key change ridge from being pressed, and when the key change ridge is pressed, the key change ridge can pass through the key change ridge groove.

10. The minimalist keypad combination lock according to claim 1, characterized in that: The clutch seat is provided with a guide groove, and the end of the unlocking plate can be inserted into the guide groove. When the clutch seat rotates, the groove wall of the guide groove can squeeze the end, thereby causing the unlocking plate to exit the guide groove and reset.

Images