Screwing type lock
By tilting the drive guide hole in the screw-lock mechanism, the problem of uneven bolt travel speed is solved, achieving stable bolt travel and stable locking during the screw-locking process, thus improving the user experience and locking effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 灵感界限科技(广州)有限公司
- Filing Date
- 2025-07-04
- Publication Date
- 2026-05-26
AI Technical Summary
In existing screw-lock mechanisms, the vertical speed of the bolt is uneven during the rotation of the handle, resulting in large torque variations and a poor user experience, especially at the beginning and end of the rotation.
The drive guide hole is inclined relative to the linear guide rail. When the rotating handle rotates in the tightening direction, the locking tongue has a large travel speed in the linear track direction and maintains a stable locking state through the compression and reset of the elastic element.
It improves the consistency of the bolt's travel speed during the tightening process, enhances the user experience, and ensures that the bolt maintains a stable locking state after tightening.
Smart Images
Figure CN224282278U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of lock technology, specifically relating to a screw-tightening lock. Background Technology
[0002] Twist-lock systems are widely used in the doors and movable panels of various boxes. When the handle of a twist-lock system is turned in the tightening direction, the vertical speed of the bolt and the torque of the rotating handle are mainly determined by the shape of the drive guide hole.
[0003] Test data revealed that for screw-type locks using horizontal linear drive guide holes, the bolt exhibits slow vertical movement at the beginning and end of the tightening process, but faster vertical movement in the middle phase, with the initial and final movements being roughly symmetrical. The main problem with this design is the slow vertical movement of the bolt at the beginning. Because the bolt doesn't engage the latch during the first half of the tightening stroke, it's unloaded. When the handle reaches approximately 3 / 4 of its travel in the tightening direction, the bolt engages the latch, resulting in significant torque variations from the beginning to the later stages. This leads to a loose, sluggish, and ultimately tight feel to the bolt during tightening, resulting in a less than ideal user experience.
[0004] Taking the butterfly lock on a wooden flight case for transport as an example, the butterfly lock with a horizontal linear drive guide hole also has the above-mentioned shortcomings in the torque distribution of the rotating handle and the speed distribution of the bolt in the vertical direction during the rotation of the rotating handle in the tightening direction. Utility Model Content
[0005] To overcome at least one of the defects described in the prior art, this utility model provides a screw-on lock. The drive guide hole is inclined relative to the linear guide rail. At the beginning stage of rotating the handle in the tightening direction, the bolt has a large travel speed in the linear track direction. Thus, when the bolt rotates to the middle stage of its stroke in the tightening direction, it begins to hook the latch, providing a better user experience. After the bolt hooks the latch, as the handle continues to rotate in the tightening direction, the bolt sleeve first slides relative to the bolt towards the latch, during which the elastic element is compressed. Then, the bolt sleeve slides relative to the bolt away from the latch until the handle rotates to the end of its stroke in the tightening direction. During this process, the elastic element rebounds to its reset position. Thus, after completing the locking action, the bolt can maintain a relatively stable locking state.
[0006] The technical solution adopted by this utility model to solve its problem is:
[0007] A screw-on lock, comprising:
[0008] Lock;
[0009] The latch is used to cooperate with the latch, and the latch is provided with a drive guide hole and a driven guide hole;
[0010] The locking tongue sleeve is equipped with a linear guide rail. The locking tongue is mounted on the locking tongue sleeve and is slidably connected to the linear guide rail. The drive guide hole is tilted relative to the linear guide rail.
[0011] A rotary handle includes a rotating body, a driving eccentric shaft, and a driven eccentric shaft that are connected to each other. The rotating body is rotatably connected to the locking tongue sleeve. The driving eccentric shaft and the driven eccentric shaft are both located at the eccentric position of the rotating body. The driving eccentric shaft is slidably connected to the driving guide hole, and the driven eccentric shaft is slidably connected to the driven guide hole.
[0012] Locking tongue base;
[0013] The elastic element has a first end connected to the locking tongue sleeve and a second end connected to the locking tongue base.
[0014] As an optional implementation, the latch includes a snap-fit part and a sliding connection part. The latch is provided with a snap-fit hole, the snap-fit part snaps into the snap-fit hole, and the latch is slidably connected to the linear guide rail through the sliding connection part.
[0015] The drive guide hole is tilted towards the snap-fit part.
[0016] As an optional implementation, the drive guide hole is an arc-shaped hole, and the drive guide hole has an arc-shaped portion that protrudes toward the snap-fit portion.
[0017] As an optional implementation, the linear guide is arranged along the first direction, the second direction is perpendicular to the first direction, and the tangent direction of the end position of the arc-shaped part of the drive guide hole away from the snap-fit part has an angle A with the second direction, 20°≤A≤40°.
[0018] As an optional implementation, the drive guide hole is a straight hole.
[0019] As an optional implementation, the linear guide is arranged along the first direction, the second direction is perpendicular to the first direction, and the axis of the drive guide hole has an angle B with the second direction, where 20°≤B≤40°.
[0020] As an optional implementation, the drive eccentric shaft includes a first shaft portion and a first limiting portion connected to each other. The drive eccentric shaft is slidably connected to the drive guide hole through the first shaft portion, and the outer diameter of the first shaft portion is less than or equal to the inner diameter of the drive guide hole.
[0021] The first limiting part is disposed outside the drive guide hole, and the outer diameter of the first limiting part is larger than the inner diameter of the drive guide hole.
[0022] As an optional implementation, the driven eccentric shaft includes a second shaft portion and a second limiting portion connected to each other. The driven eccentric shaft is slidably connected to the driven guide hole through the second shaft portion, and the outer diameter of the second shaft portion is less than or equal to the inner diameter of the driven guide hole.
[0023] The second limiting part is provided outside the driven guide hole, and the outer diameter of the second limiting part is larger than the inner diameter of the driven guide hole.
[0024] As an optional implementation, the first end of the locking tongue sleeve is provided with an opening for the locking tongue to extend, the second end of the locking tongue sleeve is provided with a first mounting hole, a linear guide rail is provided between the first end of the locking tongue sleeve and the second end of the locking tongue sleeve, and a second mounting hole is provided in the middle of the linear guide rail for rotatably connecting with the rotating body.
[0025] The first end of the elastic element is rotatably connected to the mounting hole so that the latch sleeve flips relative to the latch base;
[0026] The rotation center axis of the locking tongue sleeve is perpendicular to the rotation center axis of the rotating body.
[0027] As an optional implementation, the rotary handle also includes a handle, which is rotatably connected to the rotating body, and the rotation center axis of the handle is perpendicular to the rotation center axis of the rotating body.
[0028] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0029] In this invention, the drive guide hole is inclined relative to the linear guide rail. At the beginning of the rotation of the handle in the tightening direction, the locking tongue has a large travel speed in the linear track direction. Thus, when the locking tongue rotates to the middle of its stroke in the tightening direction, it begins to hook the latch, providing a better user experience. After the locking tongue hooks the latch, as the handle continues to rotate in the tightening direction, the locking tongue sleeve first slides relative to the locking tongue towards the latch, during which the elastic element is compressed. Then, the locking tongue sleeve slides relative to the locking tongue away from the latch until the handle rotates to the end of its stroke in the tightening direction. During this process, the elastic element rebounds to its reset position. Therefore, after the locking action is completed, the locking tongue can maintain a relatively stable locking state. Attached Figure Description
[0030] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0031] Figure 1 This is a structural schematic diagram of the rotating handle of Embodiment 1 of this utility model from a first-angle perspective at 0°.
[0032] Figure 2 This is a structural schematic diagram of the rotating handle of Embodiment 1 of this utility model from a second perspective at 0°.
[0033] Figure 3 This is a structural schematic diagram of the rotating handle of Embodiment 1 of this utility model from a third-angle perspective at 0°.
[0034] Figure 4 This is Embodiment 1 of the present utility model. Figure 1 A schematic diagram of its decomposed structure.
[0035] Figure 5 This is a schematic diagram of the rotating handle of Embodiment 1 of this utility model.
[0036] Figure 6 This is a schematic diagram of the locking tongue in Embodiment 1 of this utility model.
[0037] Figure 7 This is a first-view structural diagram of the latch and buckle just hooking together in Embodiment 1 of this utility model.
[0038] Figure 8 This is a second-view structural diagram of the latch and buckle just hooking together in Embodiment 1 of this utility model.
[0039] Figure 9 This is a third-view structural diagram of the locking tongue and the latch just hooked together in Embodiment 1 of this utility model.
[0040] Figure 10 This is a first-view structural schematic diagram of the elastic element being compressed according to Embodiment 1 of this utility model.
[0041] Figure 11 This is a second-view structural schematic diagram of the elastic element being compressed in Embodiment 1 of this utility model.
[0042] Figure 12 This is a third-view structural schematic diagram of the elastic element being compressed according to Embodiment 1 of this utility model.
[0043] Figure 13This is a structural schematic diagram of the rotating handle of Embodiment 1 of this utility model from a first-person perspective of 180°.
[0044] Figure 14 This is a structural schematic diagram of the rotating handle of Embodiment 1 of this utility model from a second perspective of 180°.
[0045] Figure 15 This is a structural schematic diagram of the rotating handle of Embodiment 1 of this utility model from a third-person perspective of 180°.
[0046] Figure 16 This is a schematic diagram showing the change in the rotation angle of the (rotating handle) and the vertical position of the (latch relative to the latch sleeve) when A=20° in Embodiment 1 of this utility model.
[0047] Figure 17 This is a schematic diagram showing the change in the rotation angle of the (rotating handle) and the vertical travel rate of the (lock tongue relative to the lock tongue sleeve) when A=20° in Embodiment 1 of this utility model.
[0048] Figure 18 This is a schematic diagram showing the change in the rotation angle of the (rotating handle) and the vertical position of the (latch relative to the latch sleeve) when A=30° in Embodiment 1 of this utility model.
[0049] Figure 19 This is a schematic diagram showing the change in the rotation angle of the (rotating handle) and the vertical travel rate of the (lock tongue relative to the lock tongue sleeve) when A=30° in Embodiment 1 of this utility model.
[0050] Figure 20 This is a schematic diagram showing the change in the rotation angle of the (rotating handle) and the vertical position of the (latch relative to the latch sleeve) when A=40° in Embodiment 1 of this utility model.
[0051] Figure 21 This is a schematic diagram showing the change in the rotation angle of the (rotating handle) and the vertical travel rate of the (lock tongue relative to the lock tongue sleeve) when A=40° in Embodiment 1 of this utility model.
[0052] Figure 22 This is a schematic diagram of the driving guide hole structure of Embodiment 1 of this utility model.
[0053] Figure 23 This is a schematic diagram of the driven guide hole structure of Embodiment 1 of this utility model.
[0054] Figure 24 This is a schematic diagram showing the change in the rotation angle of the (rotating handle) and the vertical position of the (latch relative to the latch sleeve) when B=20° in Embodiment 2 of this utility model.
[0055] Figure 25This is a schematic diagram showing the change in the rotation angle of the (rotating handle) and the vertical travel rate of the (lock tongue relative to the lock tongue sleeve) when B=20° in Embodiment 2 of this utility model.
[0056] Figure 26 This is a schematic diagram showing the change in the rotation angle of the (rotating handle) and the vertical position of the (latch relative to the latch sleeve) when B=30° in Embodiment 2 of this utility model.
[0057] Figure 27 This is a schematic diagram showing the change in the rotation angle of the (rotating handle) and the vertical travel rate of the (lock tongue relative to the lock tongue sleeve) when B=30° in Embodiment 2 of this utility model.
[0058] Figure 28 This is a schematic diagram showing the change in the rotation angle of the (rotating handle) and the vertical position of the (latch relative to the latch sleeve) when B=40° in Embodiment 2 of this utility model.
[0059] Figure 29 This is a schematic diagram showing the change in the rotation angle of the (rotating handle) and the vertical travel rate of the (lock tongue relative to the lock tongue sleeve) when B=40° in Embodiment 2 of this utility model.
[0060] Figure 30 This is a schematic diagram of the driving guide hole structure of Embodiment 2 of this utility model.
[0061] Figure 31 This is a schematic diagram of the driven guide hole in Embodiment 2 of this utility model.
[0062] Explanation of key figure labels:
[0063] 10. Locking latch; 101. Snap-fit hole; 20. Locking tongue; 201. Drive guide hole; 2011. Arc-shaped part; 202. Driven guide hole; 203. Snap-fit part; 204. Sliding connection part; 205. Limiting recess; 30. Locking tongue sleeve; 301. Linear guide rail; 302. Opening; 303. First mounting hole; 304. Second mounting hole; 40. Rotary handle; 401. Rotating body; 402. Drive eccentric shaft; 4021. First shaft part; 4022. First limiting part; 403. Driven eccentric shaft; 4031. Second shaft part; 4032. Second limiting part; 404. Handle; 50. Locking tongue base; 60. Elastic element. Detailed Implementation
[0064] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0065] In this invention, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.
[0066] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.
[0067] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; 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 an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances.
[0068] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, components, or parts (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, components, or parts. Unless otherwise stated, "a plurality of" means two or more.
[0069] The technical solution of this utility model will be further described below with reference to the embodiments and accompanying drawings.
[0070] Example 1
[0071] See Figures 1 to 23This utility model discloses a screw-on lock, comprising: a latch 10; a latch 20, which cooperates with the latch 10, and has a drive guide hole 201 and a driven guide hole 202; a latch sleeve 30, on which a linear guide rail 301 is provided, the latch 20 is disposed on the latch sleeve 30 and is slidably connected to the linear guide rail 301, and the drive guide hole 201 is inclined relative to the linear guide rail 301; and a rotary handle 40, which includes a rotating body interconnected with the latch 10. 401. A drive eccentric shaft 402 and a driven eccentric shaft 403 are provided. The rotating body 401 is rotatably connected to the latch sleeve 30. The drive eccentric shaft 402 and the driven eccentric shaft 403 are both located at the eccentric position of the rotating body 401. The drive eccentric shaft 402 is slidably connected to the drive guide hole 201, and the driven eccentric shaft 403 is slidably connected to the driven guide hole 202. A latch base 50 is provided. An elastic element 60 is provided. The first end of the elastic element 60 is connected to the latch sleeve 30, and the second end of the elastic element 60 is connected to the latch base 50.
[0072] In this invention, the drive guide hole 201 is inclined relative to the linear guide rail 301. At the beginning stage of the rotation of the handle 40 in the tightening direction, the locking tongue 20 has a large travel speed in the linear guide rail direction. Thus, when the locking tongue 20 rotates to the middle stage of its stroke in the tightening direction, it begins to hook the latch 10, providing a better user experience. After the locking tongue 20 hooks the latch 10, the handle 40 continues to rotate in the tightening direction. The locking tongue sleeve 30 first slides relative to the locking tongue 20 towards the latch 10. During this process, the elastic element 60 is compressed. Then, the locking tongue sleeve 30 slides relative to the locking tongue 20 away from the latch 10 until the handle 40 rotates to the end of its stroke in the tightening direction. During this process, the elastic element 60 rebounds to its reset position. Thus, after the locking action is completed, the locking tongue 20 can maintain a relatively stable locking state.
[0073] It should be noted that during use, the latch base 50 is connected and fixed to the first connected object, such as the latch base 50 being connected and fixed to the cabinet body; the latch 10 is connected and fixed to the second connected object, such as the latch 10 being connected and fixed to the cabinet door; the connection between the cabinet door and the cabinet body is achieved through the connection between the latch 20 and the latch 10.
[0074] In this embodiment of the utility model, the latch 20 includes a snap-fit part 203 and a sliding connection part 204. The latch 10 is provided with a snap-fit hole 101. The snap-fit part 203 snaps into the snap-fit hole 101 so that the latch 20 snaps into the latch 10. The latch 20 is slidably connected to the linear guide rail 301 through the sliding connection part 204. The drive guide hole 201 is inclined towards the snap-fit part 203.
[0075] In this embodiment of the utility model, the drive guide hole 201 is an arc-shaped hole, and the drive guide hole 201 has an arc-shaped portion 2011 protruding toward the snap-fit portion 203.
[0076] In this embodiment of the invention, the linear guide rail 301 is arranged along a first direction, and the second direction is perpendicular to the first direction. The tangent direction of the end point of the arc-shaped portion 2011 of the drive guide hole 201 away from the snap-fit portion 203 has an angle A with the second direction, where 20°≤A≤40°.
[0077] It should be noted that the first direction is the Y-axis direction of the coordinate system, and the second direction is the X-axis direction of the coordinate system.
[0078] It should be noted that the shape of the driven guide hole 202 is adapted to the shape of the drive guide hole 201, see reference. Figure 2 The driven guide hole 202 is an arc-shaped hole.
[0079] See Figures 1 to 15 The following example illustrates the situation where A=30° and the latch 10 and the latch base 50 abut against each other.
[0080] During the process of rotating the handle 40° clockwise from 0° to 180°:
[0081] See Figures 1 to 3 At this time, the rotating handle 40 is at the 0° position, the locking tongue 20 is not hooked on the lock 10, the locking tongue 20 and the lock 10 are separated from each other, the driving eccentric shaft 402 is located at the beginning position P1 of the driving guide hole 201, and the driven eccentric shaft 403 is located at the beginning position P1' of the driven guide hole 202.
[0082] See Figures 7 to 9 During the process of rotating the handle 40 clockwise from 0° to 100°, the handle 40 drives the drive eccentric shaft 402 to slide along the drive guide hole 201 from its starting position P1 to its ending position P2. At the same time, it drives the driven eccentric shaft 403 to slide along the driven guide hole 202 from its starting position P1' to its ending position P11'. This causes the latch 20 to move downward relative to the latch sleeve 30 until the latch 20 hooks the latch 10. During this process, the latch sleeve 30 remains stationary relative to the latch base 50.
[0083] See Figures 10 to 12During the rotation of the handle 40 from 100° to 140° clockwise, the latch 20 remains stationary relative to the latch base 50. The handle 40 drives the eccentric shaft 402 to slide along the drive guide hole 201 from its end position P2 to the beginning position P11, and drives the driven eccentric shaft 403 to continue sliding along the driven guide hole 202 to its end position P12', thereby driving the latch sleeve 30 to move upward relative to the latch 20, and the elastic element 60 is compressed.
[0084] See Figures 13 to 15 During the rotation of the handle 40 from 140° to 180° clockwise, the latch 20 remains stationary relative to the latch base 50. The rotation of the handle 40 drives the drive eccentric shaft 402 to slide along the drive guide hole 201 from its middle first position P11 to its beginning P1, and drives the driven eccentric shaft 403 to continue sliding along the driven guide hole 202 towards its end to its end P2', thereby driving the latch sleeve 30 to move downward relative to the latch 20, and the elastic element 60 resets.
[0085] For example, see Figure 4 The elastic element 60 is a torsion spring, and both sides of the locking tongue sleeve 30 are connected to the locking tongue base 50 through the elastic element 60.
[0086] The following are the detection data of the distance between the bolt 20 and the bolt sleeve 30 when the screw-lock is rotated in the tightening direction at A=20°, A=30° and A=40°. When the rotating handle 40 is at 0°, the distance between the bolt 20 and the bolt sleeve 30 is set to H0. The specific value of H0 depends on the actual application scenario and is not limited.
[0087] Table 1 Locking motion test (A=20°)
[0088]
[0089] It should be noted that, referring to Table 1, it can be seen that when the rotating handle 40 is between 150° and 180°, the elastic element 60 is first compressed, and then the elastic element 60 rebounds to its original position. Thus, the elastic element 60 has a retraction process, so that after the locking action is completed, the locking tongue 20 can maintain a relatively stable locking state.
[0090] If H0 is 150mm, the specific value of the height of the latch 20 relative to the latch sleeve 30 is shown in the table below. Of course, the specific value of H0 depends on the actual application scenario and is not limited.
[0091] Table 1.1 Locking motion test (A=20°)
[0092]
[0093] Table 2 Locking motion test (A=30°)
[0094]
[0095] It should be noted that, referring to Table 2 and... Figure 3 It can be seen that when the rotating handle 40 is approximately between 140° and 180°, the elastic element 60 is first compressed, and then the elastic element 60 rebounds to its original position. Thus, the elastic element 60 has a retraction process, so that after the locking action is completed, the locking tongue 20 can maintain a relatively stable locking state.
[0096] Table 3 Locking motion test (A=40°)
[0097]
[0098] It should be noted that, referring to Table 3, it can be seen that when the rotating handle 40 is approximately between 140° and 180°, the elastic element 60 is first compressed, and then the elastic element 60 rebounds to its original position. Thus, the elastic element 60 has a retraction process, so that after the locking action is completed, the locking tongue 20 can maintain a relatively stable locking state.
[0099] In this embodiment of the present invention, the drive eccentric shaft 402 includes a first shaft portion 4021 and a first limiting portion 4022 connected to each other. The drive eccentric shaft 402 is slidably connected to the drive guide hole 201 through the first shaft portion 4021. The outer diameter of the first shaft portion 4021 is less than or equal to the inner diameter of the drive guide hole 201. The first limiting portion 4022 is disposed outside the drive guide hole 201, and the outer diameter of the first limiting portion 4022 is greater than the inner diameter of the drive guide hole 201.
[0100] Since the outer diameter of the first limiting part 4022 is larger than the inner diameter of the drive guide hole 201, the first limiting part 4022 is disposed at the first end of the first shaft part 4021. The second end of the first shaft part 4021 is connected to the rotating body 401. After the drive eccentric shaft 402 is slidably connected to the drive guide hole 201, the first limiting part 4022 can prevent the drive eccentric shaft 402 from separating from the locking tongue 20.
[0101] In this embodiment of the present invention, the driven eccentric shaft 403 includes a second shaft portion 4031 and a second limiting portion 4032 connected to each other. The driven eccentric shaft 403 is slidably connected to the driven guide hole 202 through the second shaft portion 4031. The outer diameter of the second shaft portion 4031 is less than or equal to the inner diameter of the driven guide hole 202. The second limiting portion 4032 is disposed outside the driven guide hole 202, and the outer diameter of the second limiting portion 4032 is greater than the inner diameter of the driven guide hole 202.
[0102] Since the outer diameter of the second limiting part 4032 is larger than the inner diameter of the driven guide hole 202, the second limiting part 4032 is disposed at the first end of the second shaft part 4031. The second end of the second shaft part 4031 is connected to the rotating body 401. After the driven eccentric shaft 403 is slidably connected to the driven guide hole 202, the second limiting part 4032 can prevent the driven eccentric shaft 403 from separating from the locking tongue 20.
[0103] Taking A as an example of 30°, the center distance between the driving eccentric shaft 402 and the driven eccentric shaft 403 is set as D1, D1=10mm, the center distance between the rotating body 401 and the driving eccentric shaft 402 is set as D2, D2=5mm, and the outer diameter of the first shaft part 4021 of the driving eccentric shaft 402 is φ1, φ1=6mm.
[0104] See Figure 22 The drawing process of the drive guide hole 201 is as follows:
[0105] 1) Select an origin point 0, and draw a vertical auxiliary line L1 through the origin point 0;
[0106] 2) Draw a vertical auxiliary line L2 to the left of auxiliary line L1. The distance between auxiliary line L2 and auxiliary line L1 is D3, where D3 = D2.
[0107] 3) Draw an inclined auxiliary line L3 through the origin 0. The angle between auxiliary line L3 and auxiliary line L1 is C, where C = 30°.
[0108] 4) Draw a circle E1 with the intersection of auxiliary line L2 and auxiliary line L3 as the center, so that the diameter of circle E1 is φ2, φ2=φ1;
[0109] 5) Draw an arc R1 with the origin 0 as the center, so that the first endpoint of the arc R1 coincides with the intersection of the circle E1 and the auxiliary line L3 at the top, and the second endpoint of the arc R1 intersects the auxiliary line L1.
[0110] 6) The diameter of circle E2 is φ3, φ3 = φ1, and the center of circle E2 is on auxiliary line L1, so that circle E2 passes through the second endpoint of arc R1;
[0111] 7) Draw an arc R2 with the origin 0 as the center, so that the first endpoint of the arc R2 coincides with the intersection of the lower part of the circle E1 and the auxiliary line L3, and the second endpoint of the arc R2 coincides with the intersection of the lower part of the circle E2 and the auxiliary line L1.
[0112] 8) The area formed by connecting the boundaries of circle E1, arc R1, circle E2, and arc R2 is the drive shaft guide hole.
[0113] It should be noted that the selection of the origin 0 can be based on the actual application and is not limited thereto.
[0114] See Figure 23 The drawing process of the driven guide hole 202 is as follows:
[0115] 1) Substitute the drawn drive guide hole 201 into motion simulation software for motion simulation, such as CAD motion simulation software;
[0116] 2) Set the outer diameter of the first shaft portion 4021 of the drive eccentric shaft 402 to be equal to the inner diameter of the drive guide hole 201. Based on the tangential relationship between the first shaft portion 4021 of the drive eccentric shaft 402 and the drive guide hole 201 in mechanical motion, simulate the rotational motion of the drive eccentric shaft 402.
[0117] 3) Starting from the vertical line connecting the centers of the driving eccentric shaft 402 and the driven eccentric shaft 403, the driving eccentric shaft 402 and the driven eccentric shaft 403 rotate clockwise around the center of the rotating body 401. The motion trajectory of the driven eccentric shaft 403 is recorded once every certain angle of rotation. For example, the motion trajectory of the driven eccentric shaft 403 is recorded once every 10° of rotation. The smaller the rotation angle, the more accurate the trajectory record.
[0118] 4) Drive the eccentric shaft 402 and the driven eccentric shaft 403 to rotate 180° clockwise around the center of the rotating body 401 and then stop the motion simulation to obtain a series of motion trajectories of the driven eccentric shaft 403. Record all the motion trajectories of the driven eccentric shaft 403 as the boundary to draw the contour of the motion trajectory of the driven eccentric shaft 403. The obtained contour is the driven guide hole 202.
[0119] Thus, the drawing process of the driving guide hole 201 and the driven guide hole 202 described above can also satisfy the drawing of the driving guide hole 201 and the driven guide hole 202 under different parameter conditions.
[0120] In this embodiment of the present invention, the first end of the latch sleeve 30 is provided with an opening 302 for the latch 20 to extend, the second end of the latch sleeve 30 is provided with a first mounting hole 303, a linear guide rail 301 is provided between the first end of the latch sleeve 30 and the second end of the latch sleeve 30, and a second mounting hole 304 for rotatably connecting with the rotating body 401 is provided in the middle of the linear guide rail 301; the first end of the elastic member 60 is rotatably connected with the mounting hole so that the latch sleeve 30 flips relative to the latch base 50; the rotation center axis of the latch sleeve 30 is perpendicular to the rotation center axis of the rotating body 401.
[0121] Thus, the latch sleeve 30 can be flipped relative to the latch base 50. When the rotating handle 40 is turned in the loosening direction, the latch 20 and the latch 10 are separated, and the latch sleeve 30 can be flipped for easy use.
[0122] It should be noted that the latch 20 also includes a limiting recess 205, a snap-fit portion 203 is provided at the first end of the sliding connection portion 204, and a limiting recess 205 is provided at the second end of the sliding connection portion 204. The snap-fit portion 203 extends from the opening 302 to snap into the snap-fit hole 101 of the latch 10. The second end of the latch sleeve 30 can move inside the limiting recess 205, and the edge of the limiting recess 205 can limit the second end of the latch sleeve 30, so as to prevent the latch 20 and the latch sleeve 30 from separating from each other during relative movement.
[0123] In this embodiment of the utility model, the rotating handle 40 also includes a handle 404, which is rotatably connected to the rotating body 401, and the rotation center axis of the handle 404 is perpendicular to the rotation center axis of the rotating body 401.
[0124] See Figure 1 The 404 stainless steel handle can stand upright; see reference. Figure 13 The 404 stainless steel handle can be folded over, making it convenient for users to operate.
[0125] Example 2
[0126] See Figures 1 to 31 In this embodiment of the utility model, unlike in embodiment 1, the drive guide hole 201 is a straight hole.
[0127] In this embodiment of the utility model, the linear guide 301 is arranged along the first direction, the second direction is perpendicular to the first direction, and the axial direction of the drive guide hole 201 has an angle B with the second direction, where 20°≤B≤40°.
[0128] The following are the detection data of the distance between the bolt 20 and the bolt sleeve 30 when the screw-type lock is rotated in the tightening direction at B=20°, B=30° and B=40°. When the rotating handle 40 is set to 0°, the distance between the bolt 20 and the bolt sleeve 30 is h0. The specific value of h0 depends on the actual application scenario and is not limited.
[0129] Table 4 Locking motion test (B=20°)
[0130]
[0131] It should be noted that, referring to Table 4, it can be seen that when the rotating handle 40 is between 140° and 180°, the elastic element 60 is first compressed, and then the elastic element 60 rebounds to its original position. Thus, the elastic element 60 has a retraction process, so that after the locking action is completed, the locking tongue 20 can maintain a relatively stable locking state.
[0132] If h0 is 150mm, the specific value of the height of the latch 20 relative to the latch sleeve 30 is shown in the table below. Of course, the specific value of h0 depends on the actual application scenario and is not limited.
[0133] Table 4.1 Locking motion test (B=20°)
[0134]
[0135] Table 5 Locking motion test (B=30°)
[0136]
[0137] It should be noted that, as can be seen from Table 5, when the rotating handle 40 is approximately between 120° and 180°, the elastic element 60 is first compressed, and then the elastic element 60 rebounds to its original position. Thus, the elastic element 60 has a retraction process, so that after the locking action is completed, the locking tongue 20 can maintain a relatively stable locking state.
[0138] Table 6 Locking motion test (B=40°)
[0139]
[0140] It should be noted that, referring to Table 6, it can be seen that when the rotating handle 40 is approximately between 100° and 180°, the elastic element 60 is first compressed, and then the elastic element 60 rebounds to its original position. Thus, the elastic element 60 has a retraction process, so that after the locking action is completed, the locking tongue 20 can maintain a relatively stable locking state.
[0141] Taking B as 30° as an example, the center distance between the driving eccentric shaft 402 and the driven eccentric shaft 403 is set as D1', D1'=10mm, the center distance between the rotating body 401 and the drive is D2', D2'=5mm, and the outer diameter of the drive is φ1', φ1'=6mm.
[0142] See Figure 30 The drawing process of the drive guide hole 201 is as follows:
[0143] 1) Select an origin point 0' and draw a vertical auxiliary line L1' through the origin point 0';
[0144] 2) Draw a vertical auxiliary line L2' to the left of auxiliary line L1'. The distance between auxiliary line L2' and auxiliary line L1' is D3', where D3' = D2'.
[0145] 3) Draw a horizontal auxiliary line L3' through the origin 0';
[0146] 4) Draw an inclined auxiliary line L4' through the intersection of auxiliary line L2' and auxiliary line L3', with an angle D between auxiliary line L4' and auxiliary line L3', where D = 30°;
[0147] 5) Draw a circle E1' with the intersection of auxiliary line L2' and auxiliary line L3' as the center, so that the diameter of circle E1' is φ2', and φ2' = φ1';
[0148] 6) Draw a circle E2' with the intersection of auxiliary line L1' and auxiliary line L4' as the center. The diameter of circle E2' is φ3', and φ3' = φ1'.
[0149] 7) Draw a tangent line L5' above circles E1' and E2', so that the tangent line L5' is tangent to the top of both circles E1' and E2'.
[0150] 8) Draw a tangent line L6' below circles E1' and E2', so that the tangent line L6' is tangent to the bottom of both circles E1' and E2';
[0151] 9) The area formed by connecting the boundaries of circle E1', tangent L5', circle E2', and tangent L6' is the drive shaft guide hole.
[0152] See Figure 31 The drawing process of the driven guide hole 202 is as follows:
[0153] 1) Substitute the drawn drive guide hole 201 into motion simulation software for motion simulation, such as CAD motion simulation software;
[0154] 2) Set the outer diameter of the first shaft portion 4021 of the drive eccentric shaft 402 to be equal to the inner diameter of the drive guide hole 201. Based on the tangential relationship between the first shaft portion 4021 of the drive eccentric shaft 402 and the drive guide hole 201 in mechanical motion, simulate the rotational motion of the drive eccentric shaft 402.
[0155] 3) Starting from the vertical line connecting the centers of the driving eccentric shaft 402 and the driven eccentric shaft 403, the driving eccentric shaft 402 and the driven eccentric shaft 403 rotate clockwise around the center of the rotating body 401. The motion trajectory of the driven eccentric shaft 403 is recorded once every certain angle of rotation. For example, the motion trajectory of the driven eccentric shaft 403 is recorded once every 10° of rotation. The smaller the rotation angle, the more accurate the trajectory record.
[0156] 4) Drive the eccentric shaft 402 and the driven eccentric shaft 403 to rotate 180° clockwise around the center of the rotating body 401 and then stop the motion simulation to obtain a series of motion trajectories of the driven eccentric shaft 403. Record all the motion trajectories of the driven eccentric shaft 403 as the boundary to draw the contour of the motion trajectory of the driven eccentric shaft 403. The obtained contour is the driven guide hole 202.
[0157] The technical means disclosed in this utility model are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.
Claims
1. A screw-on lock, characterized in that, include: Lock; A locking tongue, which is used to cooperate with the latch, and the locking tongue is provided with a drive guide hole and a driven guide hole; A locking tongue sleeve is provided with a linear guide rail. The locking tongue is disposed on the locking tongue sleeve and is slidably connected to the linear guide rail. The drive guide hole is inclined relative to the linear guide rail. A rotary handle, comprising a rotating body, a driving eccentric shaft, and a driven eccentric shaft connected to each other, wherein the rotating body is rotatably connected to the locking tongue sleeve, and both the driving eccentric shaft and the driven eccentric shaft are disposed at eccentric positions on the rotating body, wherein the driving eccentric shaft is slidably connected to the driving guide hole, and the driven eccentric shaft is slidably connected to the driven guide hole; Locking tongue base; An elastic element, wherein the first end of the elastic element is connected to the locking tongue sleeve, and the second end of the elastic element is connected to the locking tongue base.
2. The screw-on lock according to claim 1, characterized in that: The latch includes a snap-fit part and a sliding connection part. The latch is provided with a snap-fit hole. The snap-fit part snaps into the snap-fit hole. The latch is slidably connected to the linear guide rail through the sliding connection part. The drive guide hole is inclined toward the snap-fit part.
3. The screw-on lock according to claim 2, characterized in that: The drive guide hole is an arc-shaped hole, and the drive guide hole has an arc-shaped portion that protrudes toward the snap-fit portion.
4. The screw-on lock according to claim 3, characterized in that: The linear guide is arranged along a first direction, and the second direction is perpendicular to the first direction. The tangent direction of the end point of the arc-shaped part of the drive guide hole away from the direction of the snap-fit part has an angle A with the second direction, where 20°≤A≤40°.
5. The screw-on lock according to claim 2, characterized in that: The drive guide hole is a straight hole.
6. The screw-on lock according to claim 5, characterized in that: The linear guide is arranged along a first direction, and a second direction is perpendicular to the first direction. The axial direction of the drive guide hole has an angle B with the second direction, where 20°≤B≤40°.
7. The screw-on lock according to any one of claims 1-6, characterized in that: The drive eccentric shaft includes a first shaft portion and a first limiting portion connected to each other. The drive eccentric shaft is slidably connected to the drive guide hole through the first shaft portion. The outer diameter of the first shaft portion is less than or equal to the inner diameter of the drive guide hole. The first limiting part is disposed outside the drive guide hole, and the outer diameter of the first limiting part is larger than the inner diameter of the drive guide hole.
8. The screw-on lock according to any one of claims 1-6, characterized in that: The driven eccentric shaft includes a second shaft portion and a second limiting portion connected to each other. The driven eccentric shaft is slidably connected to the driven guide hole through the second shaft portion. The outer diameter of the second shaft portion is less than or equal to the inner diameter of the driven guide hole. The second limiting part is disposed outside the driven guide hole, and the outer diameter of the second limiting part is larger than the inner diameter of the driven guide hole.
9. The screw-on lock according to any one of claims 1-6, characterized in that: The first end of the latch sleeve is provided with an opening for the latch to extend, the second end of the latch sleeve is provided with a first mounting hole, a linear guide rail is provided between the first end of the latch sleeve and the second end of the latch sleeve, and a second mounting hole is provided in the middle of the linear guide rail for rotatably connecting with the rotating body. The first end of the elastic element is rotatably connected to the mounting hole so that the latch sleeve flips relative to the latch base; The rotation center axis of the locking tongue sleeve is perpendicular to the rotation center axis of the rotating body.
10. The screw-on lock according to any one of claims 1-6, characterized in that: The rotating handle also includes a handle, which is rotatably connected to the rotating body, and the rotation center axis of the handle is perpendicular to the rotation center axis of the rotating body.