Knob reset structure easy to operate

Abstract

The utility model relates to the technical field of locks, in particular to an easy-to-operate knob reset structure, which comprises a knob and a password component, a center rod of the password component is vertically positioned beside the knob, the center rod abuts against the outer side of the knob, and external force overcomes spring force at the center rod to rotate the knob during unlocking. After unlocking, the central rod pushes the knob to rotate and reset under the action of spring force; the face, passing through the center of the rotary knob and perpendicular to the axial direction of the center rod, of the rotary knob serves as a reference face, and when the rotary knob is in the locked state and the rotationally unlocked state, the abutting positions of the rotary knob and the center rod are located on the two sides of the reference face respectively. Compared with the prior art, on the premise that the diameter and the rotation stroke of the knob are fixed values, the radial distance between the matched part of the knob and the center rod before and after rotation is smaller, and the reset force applied by the center rod to the knob is smaller, so that a spring with smaller strength can be adopted at the center rod; correspondingly, when a user rotates the knob, the spring force needing to be overcome is smaller, and the user experience is improved.

Description

Technical Field

[0001] This utility model relates to the field of lock technology, specifically to an easy-to-operate knob reset structure. Background Technology

[0002] In some existing bag locks, the unlocking is controlled by a knob. After the knob is turned, it needs to be reset. Current technology uses the central rod in the combination wheel set to push the knob to reset.

[0003] like Figure 1 The diagram shows a simplified representation of a knob 01 and a central rod 02 in the prior art. The knob 01 rotates, while the central rod 02 moves linearly along its axis. A spring is fitted around the central rod 02 to drive the knob to rotate and reset. The first abutment A on the outer side of the knob 01 engages with the second abutment B on the central rod 02. When the knob is turned in the direction of arrow C to unlock, the spring force on the outer side of the central rod 02 must be overcome. When the external force releases the knob 01, the spring drives the central rod 02 to push the knob 01 to rotate and reset in the direction of arrow D.

[0004] In conventional thinking techniques, such as Figure 1 As shown, the center rod 02 is located perpendicularly to the side of the knob 01. The plane of the knob 01 that passes through its own center and is perpendicular to the axis of the center rod 02 is taken as the reference plane m. The initial position of the first abutment A is set at the reference plane m. Figure 2 This is a schematic diagram showing the rotation of knob 01. Figure 1 and Figure 2 As shown, when knob 01 is not turned to unlock, the first abutment A is located at point e. When knob 01 is turned to unlock, the first abutment A pushes the second abutment B to move together to point f. Therefore, when knob 01 is reset, the point of action between the center rod 02 and knob 01 needs to be reset from point f to point e.

[0005] The inventors discovered that, according to the formula for calculating the inclined plane thrust, the further right point f moves (i.e., the larger dimension L becomes, the larger dimension H becomes), and the greater the leftward reset force applied by the second abutment B of the central rod 02 to the first abutment A of the knob 01 at point f. When point f moves to the rightmost point g of the knob 01, no matter how much leftward force the central rod 02 applies to the knob 01, it cannot drive the knob 01 to rotate and reset. As can be seen from the above, in the prior art, the initial point of action of the knob and the central rod is at the base surface. Therefore, after the knob is rotated to unlock, it moves to the right to a considerable extent. To enable the knob to reset smoothly, the spring outside the existing central rod needs to have a sufficiently large elastic force. This means that when the user rotates the knob to unlock, they also need to exert a large force to overcome the spring force, causing some inconvenience in use. Utility Model Content

[0006] In view of the above-mentioned technical problems, the present invention provides an easy-to-operate knob reset structure.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A user-friendly knob reset structure is provided, comprising a knob and a combination lock assembly. The combination lock assembly includes a central rod, multiple combination wheels, and multiple code-changing wheels. The code-changing wheels are coaxially mounted in the combination wheels in a one-to-one correspondence, and the code-changing wheels rotate together with their corresponding combination wheels. The central rod passes through the multiple code-changing wheels. In the locked state, the central rod abuts against and restricts the rotation of the knob. Only when the combination wheels rotate to the correct combination can the central rod move axially. A spring is provided at the central rod. Its characteristic is:

[0009] The center rod is located perpendicularly to the side of the knob, and the center rod abuts against the outer side of the knob. When unlocking, the external force overcomes the spring force at the center rod and rotates the knob. After unlocking, the center rod pushes the knob to rotate and reset under the action of the spring force.

[0010] Taking the plane of the knob that passes through its own center and is perpendicular to the axis of the central rod as the reference plane, the knob is in the locked state and in the unlocked state: the mutual abutment position of the knob and the central rod is located on both sides of the reference plane.

[0011] Specifically, the initial point is the position where the knob abuts against the center rod when it is locked, and the final point is the position where the knob abuts against the center rod when it is unlocked. The initial and final points are symmetrically arranged relative to the reference plane.

[0012] Specifically, the bottom of the knob is equipped with a clutch block, and the knob contains a lock core that rotates together with the clutch block. In the locked state, the lock core is fixed relative to the knob. After the correct key is inserted into the lock core, the lock core can rotate relative to the knob.

[0013] Specifically, the knob includes a wrench and a support that are fixed to each other, with the lock core passing through the support and its keyhole protruding from the top of the wrench.

[0014] Specifically, a notch is formed on the outer side of the support, a support arm is provided at the end of the central rod, the support arm extends into a U-shaped forked arm, the forked arm is embedded in the notch; the support is partially supported on the forked arm; the forked arm abuts against the side wall of the notch.

[0015] Specifically, the support is provided with an elastic positioning groove, and the clutch block is provided with a positioning protrusion. In the locked state, the positioning protrusion is embedded in the elastic positioning groove; when the clutch block is subjected to external force, the positioning protrusion can be disengaged from the elastic positioning groove.

[0016] Specifically, the mating surface between the elastic positioning groove and the positioning protrusion is an arc surface.

[0017] Specifically, a mating arc surface is provided between the elastic positioning groove and the support arm.

[0018] Specifically, the combination device also includes a floating plate and a locking plate located at the bottom of the combination wheel. The locking plate is slidably mounted and fixed to the support arm. The floating plate is provided with an auxiliary locking protrusion, and the locking plate is provided with an auxiliary locking groove. In the locked state, the auxiliary locking protrusion is embedded in the auxiliary locking groove to restrict the sliding of the locking plate. The floating plate cooperates with the code-changing wheel. After the combination wheel and the code-changing wheel rotate to the correct combination, the floating plate moves towards the direction of the combination wheel so that the auxiliary locking protrusion disengages from the auxiliary locking groove.

[0019] The beneficial effects of this utility model are as follows: Compared with the prior art, the easy-to-operate knob reset structure of this utility model has a smaller distance between the initial and final points of the part where the knob and the central rod cooperate, under the premise that the knob diameter and rotation stroke are fixed values. The reset force applied by the central rod to the knob is smaller, so the spring at the central rod can be a spring with a smaller strength. The corresponding spring force that the user needs to overcome when rotating the knob is also smaller, which improves the user experience. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings. However, the embodiments in the drawings do not constitute any limitation on the present invention. For those skilled in the art, other drawings can be obtained based on the following drawings without creative effort.

[0021] Figure 1 This is a simplified diagram illustrating the fit between the existing knob and the center rod.

[0022] Figure 2 This is a schematic diagram showing the position of the knob in relation to the center rod before and after rotation.

[0023] Figure 3 This is a schematic diagram of an easy-to-operate knob reset structure in one embodiment.

[0024] Figure 4 This is a partial structural diagram of an easy-to-operate knob reset structure in one embodiment.

[0025] Figure 5 This is an exploded view of an easy-to-operate knob reset structure in one embodiment.

[0026] Figure 6 This is a cross-sectional view in the embodiment.

[0027] Figure 7 This is a simplified diagram showing the fit between the knob and the center rod in the embodiment.

[0028] Figure 8 This is a schematic diagram showing the position of the knob in relation to the center rod before and after rotation in the embodiment.

[0029] Figure label:

[0030] Combination key 21, center rod 211, support arm 212, forked arm 213, combination wheel 214, code wheel 215, floating plate 216, auxiliary locking protrusion 2161, lock plate 217, auxiliary locking groove 2171, lock core 22;

[0031] Knob 4, wrench 41, support 42, notch 421, elastic positioning groove 422; clutch block 8, positioning protrusion 82. Detailed Implementation

[0032] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0033] This embodiment provides an easy-to-operate knob reset structure, such as... Figures 3 to 6 As shown, the device includes a knob 4 and a combination lock assembly 21. The combination lock assembly 21 includes a central rod 211, three combination wheels 214, and three code-changing wheels 215. The three code-changing wheels 215 are coaxially mounted in the three combination wheels 214, and rotate together with their corresponding combination wheels 214. The central rod 211 passes through multiple code-changing wheels 215. The central rod 211 can only move axially when the combination wheel 214 rotates to the correct combination. This is achieved through the convex-concave alignment structure on the outer side of the central rod 211 and the inner side of the code-changing wheels 215, which is existing technology and will not be described in detail. In the locked state, the central rod 211 abuts against and restricts the rotation of the knob 4.

[0034] The bottom of the knob 4 is provided with a clutch block 8. The lock core 22 is installed in the knob 4 and rotates together with the clutch block 8. In the locked state, the lock core 22 and the knob 4 are fixed relative to each other. After the correct key is inserted into the lock core 22, the lock core 22 can be rotated, and the lock core 22 drives the clutch block 8 to rotate. At this time, the knob 4 does not rotate.

[0035] Specifically, the knob 4 includes a circular wrench 41 and a support 42 that are fixed to each other. The wrench 41 is operated by the user. The lock core 22 is inserted through the support 42, and the keyhole at the top of the lock core 22 protrudes from the top of the wrench 41. The bottom of the lock core 22 extends out of the support 42 and connects to the clutch block 8.

[0036] Specifically, a notch 421 is formed on the outer side of the support 42, and a support arm 212 is provided at the end of the central rod 211. The support arm 212 extends into a U-shaped forked arm 213, which is embedded in the notch 421. The support 42 is partially supported on the forked arm 213.

[0037] Specifically, the support 42 is provided with an elastic positioning groove 422, and the clutch block 8 is provided with a positioning protrusion 82. In the locked state, the positioning protrusion 82 is embedded in the elastic positioning groove 422, which plays a positioning role. When the clutch block 8 is subjected to external force and rotates, the positioning protrusion 82 can be disengaged from the elastic positioning groove 422.

[0038] Specifically, the mating surface between the elastic positioning groove 422 and the positioning protrusion 82 is an arc surface; and / or: the elastic positioning groove 422 and the support arm 212 are provided with a mating arc surface, which serves as a guide.

[0039] Specifically, the combination component 21 also includes a floating plate 216 and a locking plate 217 located at the bottom of the combination wheel 214. The locking plate 217 is fixed to the support arm 212 and is slidably disposed within the lock housing 1 in the same direction as the sliding direction of the center rod 211. The floating plate 216 is provided with an auxiliary locking protrusion 2161, and the locking plate 217 is provided with an auxiliary locking groove 2171. In the locked state, the auxiliary locking protrusion 2161 is embedded in the auxiliary locking groove 2171 to restrict the sliding of the locking plate 217. The floating plate 216 cooperates with the code-changing wheel 215. A spring is provided below the floating plate 216. After the combination wheel 214 and the code-changing wheel 215 rotate to the correct combination, the floating plate 216 moves toward the combination wheel 214 to disengage the auxiliary locking protrusion 2161 from the auxiliary locking groove 2171. It is evident that when the combination lock is engaged, the center rod 211 and the dial wheel 215 provide a first-level limiting function, while the floating plate 216 and the lock plate 217 provide a second-level limiting function. This double-limiting locking system provides enhanced security.

[0040] Combination Figures 3 to 8 As shown above, it can be concluded that:

[0041] The center rod 211 is located perpendicularly to the side of the knob 4. The axis of the center rod 211 passes through the axis of the knob 4. The forked arm 213 of the center rod 211 extends and abuts against the outer side of the knob 4. When unlocking, the external force overcomes the spring force at the center rod 211 and rotates the knob 4. After unlocking, the center rod 211 pushes the knob 4 to rotate and reset under the action of the spring force.

[0042] With the plane of knob 4 passing through its own center and perpendicular to the axis of the central rod 211 as the reference plane m, in the locked state and the unlocked state, the mutual abutment positions of knob 4 and central rod 211 are located on both sides of the reference plane m.

[0043] Specifically, the initial point e1 is the position where the knob 4 abuts against the central rod 211 in the locked state, and the final point f1 is the position where the knob 4 abuts against the central rod 211 in the unlocked state. The initial point e1 and the final point f1 are symmetrically arranged with respect to the reference plane m. This is the optimal solution. Under the premise that the diameter and rotation stroke of the knob 4 are constant, the radial distance H1 between the initial point e1 and the final point f1 is minimized. Calculations show that the required reset force of the knob 4 is minimized. Therefore, a spring with lower strength can be used at the central rod 211, and the spring force that the user needs to overcome when rotating the knob 4 is also smaller, improving the user experience. Of course, in practice, a non-preferred asymmetrical arrangement can also be used, but the initial point e1 and the final point f1 must be located on the left and right sides of the reference plane m to reflect the required smaller reset force.

[0044] In the description of this utility model, it is obvious that the described embodiments are only a part of the embodiments of this utility model, and not all of them. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0045] Therefore, the above detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0046] In the description of this utility model, it should be noted that the terms "middle," "upper," "lower," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0047] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "set," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. They can refer to a mechanical connection or an electrical connection. They can refer to a direct connection or an indirect connection through an intermediate medium, or a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

Claims

1. An easy-to-operate knob reset structure, comprising a knob and a combination lock assembly, the combination lock assembly comprising a central rod, multiple combination lock wheels, and multiple code adjustment wheels, the multiple code adjustment wheels being coaxially mounted in the multiple combination lock wheels in a one-to-one correspondence, and the code adjustment wheels rotating together with their corresponding combination lock wheels; the central rod passing through the multiple code adjustment wheels; in the locked state, the central rod abuts against and restricts the rotation of the knob; only when the combination lock wheels rotate to the correct combination can the central rod move axially; a spring is provided at the central rod; characterized in that: The center rod is located perpendicularly to the side of the knob, and the center rod abuts against the outer side of the knob. When unlocking, the external force overcomes the spring force at the center rod and rotates the knob. After unlocking, the center rod pushes the knob to rotate and reset under the action of the spring force. Using the plane of the knob that passes through its own center and is perpendicular to the axis of the central rod as the reference plane, the knob is in the locked state and in the unlocked state: the mutual abutment positions of the knob and the central rod are located on both sides of the reference plane.

2. The easy-to-operate knob reset structure according to claim 1, characterized in that: The initial point is the position where the knob abuts against the center rod when it is locked, and the final point is the position where the knob abuts against the center rod when it is unlocked. The initial and final points are symmetrically arranged with respect to the reference plane.

3. The easy-to-operate knob reset structure according to claim 1, characterized in that: The bottom of the knob is equipped with a clutch block, and the knob contains a lock core that rotates together with the clutch block. In the locked state, the lock core is fixed relative to the knob. After the correct key is inserted into the lock core, the lock core can rotate relative to the knob.

4. The easy-to-operate knob reset structure according to claim 3, characterized in that: The knob includes a wrench and a support that are fixed to each other, with the lock core passing through the support and its keyhole protruding from the top of the wrench.

5. The easy-to-operate knob reset structure according to claim 4, characterized in that: a support... A notch is formed on the outer side of the part, and a support arm is provided at the end of the central rod. The support arm extends into a U-shaped forked arm, which is embedded in the notch. The support is partially supported on the forked arm, and the forked arm abuts against the side wall of the notch.

6. The easy-to-operate knob reset structure according to claim 5, characterized in that: The support is provided with an elastic positioning groove, and the clutch block is provided with a positioning protrusion. In the locked state, the positioning protrusion is embedded in the elastic positioning groove; when the clutch block is subjected to external force, the positioning protrusion can be disengaged from the elastic positioning groove.

7. The easy-to-operate knob reset structure according to claim 6, characterized in that: The mating surface between the elastic positioning groove and the positioning protrusion is an arc surface.

8. The easy-to-operate knob reset structure according to claim 6, characterized in that: A mating arc surface is provided between the elastic positioning groove and the support arm.

9. The easy-to-operate knob reset structure according to claim 5, characterized in that: The combination device also includes a floating plate and a locking plate located at the bottom of the combination wheel. The locking plate is slidably mounted and fixed to the support arm. The floating plate is provided with an auxiliary locking protrusion, and the locking plate is provided with an auxiliary locking groove. In the locked state, the auxiliary locking protrusion is embedded in the auxiliary locking groove to restrict the sliding of the locking plate. The floating plate cooperates with the code-changing wheel. After the combination wheel and the code-changing wheel rotate to the correct combination, the floating plate moves towards the combination wheel so that the auxiliary locking protrusion disengages from the auxiliary locking groove.

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