Rotary locking device and scissors

Abstract

The utility model provides a rotary locking device for scissors. The scissors comprise a rotor part and a stator part, and the rotor part is rotatably connected with the stator part through a rivet. A knob of the rotary locking device is arranged on the stator part. The knob includes a body rotatable about a body axis parallel to the rivet axis, the body having a top wall, a bottom wall, a first side wall, and a second side wall. On a plane perpendicular to the axis of the main body, orthographic projections of the top wall and the bottom wall are two sections of arcs on a first circle with the circle center as the axis of the main body. On the plane perpendicular to the axis of the main body, the orthographic projection of the first side wall and the orthographic projection of the second side wall are arcs of two concentric circles with the axis of the rivet as the circle center. The rotor part is provided with a first through hole and a first notch which are communicated with each other, and the main body can rotate in the first through hole. When the main body rotates to the corresponding first notch, the rotor part rotates relative to the stator part; and when the main body rotates to other positions, the rotor part and the stator part are locked by the knob.

Description

Technical Field

[0001] This application relates to the field of stationery, and more particularly, to a rotary locking device and scissors. Background Art

[0002] Scissors are common items in daily life, usually consisting of a rotor part, a stator part, and a rivet. The rotor part is usually controlled by pressing and lifting with the thumb, enabling the rotor part to rotate relative to the stator part around the rivet. Scissors that use a driving device instead of the thumb can be called "semi-automatic scissors", and semi-automatic scissors usually require a locking structure to achieve the storage of the scissors. The locking structures in the prior art are complex in structure and cumbersome in use and operation, which is not conducive to the wide application of scissors. Summary of the Utility Model

[0003] The main purpose of this application is to overcome at least one defect of the above prior art, and to provide a rotary locking device and scissors with a simple structure and convenient operation.

[0004] To achieve the above purpose, this application adopts the following technical solutions:

[0005] According to one aspect of this application, a rotary locking device for scissors is provided. The scissors include a rotor part and a stator part, and the rotor part and the stator part are connected by a rivet. The rotor part can rotate relative to the stator part around the axis of the rivet. The rotary locking device includes: a knob, which is arranged on the stator part. The knob includes a main body, and the knob can rotate around the axis of the main body. The axis of the main body is parallel to the axis of the rivet. The main body has a top wall, a bottom wall, a first side wall, and a second side wall. On a plane perpendicular to the axis of the main body, the orthographic projections of the top wall and the bottom wall are two arcs on a first circle with the axis of the main body as the center of the circle. On a plane perpendicular to the axis of the main body, the orthographic projections of the first side wall and the second side wall are two arcs of a first concentric circle with the axis of the rivet as the center of the circle. The rotor part is provided with a first through hole, the diameter of the first through hole is larger than the diameter of the first circle, and the main body can rotate in the first through hole. The rotor part is provided with a first notch, and the first notch communicates with the first through hole. When the main body rotates to correspond to the first notch, the main body can move relative to the rotor part through the first notch, and the rotor part rotates relative to the stator part around the axis of the rivet; when the main body rotates to other positions, the knob locks the rotor part and the stator part.

[0006] According to one embodiment of the present application, the rotary locking device further includes a convex hook, which is disposed at one end of the main body facing the stator portion, and the convex hook extends outward from the top wall along the first concentric circle. On a plane perpendicular to the axis of the main body, the orthographic projection of the surface of the convex hook away from the top wall is on a second circle with the axis of the main body as the center, and the diameter of the second circle is greater than the diameter of the first through hole.

[0007] According to one embodiment of the present application, one end of the main body facing away from the stator portion is connected with an end button, and a handle is disposed on the surface of the end button facing away from the main body.

[0008] According to one embodiment of the present application, the rotary locking device further includes an end cover, which is disposed on the stator portion. The end cover has a cavity, the main body can rotate in the cavity, and a limiting structure is disposed in the cavity. The limiting structure limits the rotation angle of the main body by restricting the convex hook.

[0009] According to one embodiment of the present application, the limiting structure is in a "C" shape.

[0010] According to one embodiment of the present application, the end cover is provided with a hook, and the hook connects the end cover to the stator portion.

[0011] According to another aspect of the present application, the present application provides a pair of scissors, including a rotor portion, a stator portion and a rotary locking device, wherein the rotary locking device adopts the above-mentioned rotary locking device.

[0012] According to one embodiment of the present application, the rotor portion includes an insertion piece, the first through hole and the first notch are both disposed on the insertion piece. When the knob can move relative to the first insertion piece, the rotor portion rotates relative to the stator portion around the axis of the rivet; when the knob cannot move relative to the first insertion piece, the knob locks the rotor portion and the stator portion.

[0013] According to one embodiment of the present application, on a plane perpendicular to the axis of the first through hole, the orthographic projections of the two side walls of the first notch are two arcs of the first concentric circle with the axis of the rivet as the center.

[0014] According to one embodiment of the present application, define the distance between the two side walls of the first notch as the width of the first notch, and the distance between the first side wall and the second side wall as the width of the main body. Then the width of the first notch is greater than the width of the main body.

[0015] According to one embodiment of the present application, the stator portion is provided with a receiving groove capable of receiving the insertion piece.

[0016] According to one embodiment of the present application, the stator portion is provided with a second through hole, a first counterbore, and a second counterbore. The second through hole has a second notch, and the second through hole and the second notch communicate the first counterbore and the second counterbore. After the convex hook passes through the second notch, the main body is rotated, and the convex hook is stuck in the second counterbore.

[0017] According to one embodiment of the present application, the diameter of the second through hole is equal to the diameter of the first through hole. Define the distance between the two side walls of the second notch as the width of the second notch, and define the distance between the two side walls of the first notch as the width of the first notch. Then the width of the second notch is equal to the width of the first notch.

[0018] According to one embodiment of the present application, on a plane perpendicular to the axis of the second through hole, the positive projections of the two side walls of the second notch are two arcs of second concentric circles. Taking the axis of the second through hole as the center of symmetry, the center of the second concentric circle and the axis of the rivet are centrosymmetric.

[0019] According to one embodiment of the present application, the rotary locking device further includes an end cap, and the second counterbore accommodates the end cap.

[0020] According to one embodiment of the present application, when the rotor portion is locked with the stator portion, the first through hole and the second through hole overlap, and the directions of the second notch and the first notch are opposite.

[0021] As can be seen from the above technical solutions, the advantages and positive effects of the rotary locking device proposed by the present application are as follows:

[0022] For the rotary locking device proposed by the present application, the axis of the knob main body is parallel to the axis of the rivet. The main body has a top wall, a bottom wall, a first side wall, and a second side wall. On a plane perpendicular to the axis of the main body, the positive projections of the top wall and the bottom wall are two arcs on a first circle with the axis of the main body as the center of the circle. This can enable the main body to rotate around its own axis. The positive projections of the first side wall and the second side wall are two arcs of first concentric circles with the axis of the rivet as the center of the circle. When the rotor portion of the scissors rotates relative to the stator portion around the rivet axis, the knob main body can smoothly avoid the rotor portion and will not interfere with the rotor portion.

[0023] The rotor part of the scissors is provided with a first through hole, the diameter of the first through hole is larger than the diameter of the first circle, and the main body can rotate in the first through hole. The rotor part is provided with a first notch, and the first notch communicates with the first through hole. When the main body rotates to correspond to the first notch, the main body can move relative to the rotor part through the first notch, and the rotor part rotates relative to the stator part around the axis of the rivet; when the main body rotates to other positions, the knob locks the rotor part and the stator part. In the rotation locking device of the present application, the knob main body is matched with the first through hole and the first notch of the rotor part, so that the use and storage of the scissors can be realized, and the structure is simple and the operation is convenient. Description of the Drawings

[0024] By considering the following detailed description of the preferred embodiments of the present application in conjunction with the drawings, various objects, features and advantages of the present application will become more obvious. The drawings are only illustrative diagrams of the present application and are not necessarily drawn to scale. In the drawings, the same reference numerals always represent the same or similar components. Among them:

[0025] Figure 1 is a schematic structural diagram of the rotation locking device and the scissors of the present application.

[0026] Figure 2 is Figure 1 a schematic structural diagram of the knob of the rotation locking device of

[0027] Figure 3 is Figure 1 a schematic structural diagram of another angle of the knob shown in

[0028] Figure 4 is Figure 1 a rear view of the knob shown in

[0029] Figure 5 is Figure 1 a side view of the knob shown in

[0030] Figure 6 is a schematic structural diagram of the rotor part of the scissors of the present application.

[0031] Figure 7 is Figure 6 an enlarged schematic structural diagram of the insert piece of

[0032] Figure 8 is a schematic structural diagram of the end cover of the rotation locking device of the present application.

[0033] Figure 9 is Figure 8 a front view of the end cover shown in

[0034] Figure 10 is Figure 9 a rear view of the end cover shown in

[0035] Figure 11 It is a schematic structural diagram of the stator part of the scissors of the present application.

[0036] Figure 12 is Figure 11 An enlarged structural diagram of a partial stator grip.

[0037] Figure 13 It is a schematic structural diagram of the scissors in the stored state of the present application.

[0038] Figure 14 is Figure 13 A schematic diagram of the positional relationship between the knob and the end cap when the scissors are in the stored state shown.

[0039] Figure 15 is Figure 13 A schematic diagram of the positional relationship between the knob, the rotor part and the stator part when the end cap is removed when the scissors are in the stored state shown.

[0040] Figure 16 It is a schematic structural diagram of the scissors in the open state of the present application.

[0041] Figure 17 is Figure 16 A schematic diagram of the positional relationship between the knob and the end cap when the scissors are in the open state shown.

[0042] Figure 18 Figure 16 A schematic diagram of the positional relationship between the knob, the rotor part and the stator part when the end cap is removed when the scissors are in the open state shown.

[0043] 1. Rotating lock device;

[0044] 2. Scissors;

[0045] 10. Knob;

[0046] 11. End cap;

[0047] 20. Rotor part;

[0048] 21. Stator part;

[0049] 30. Rivet;

[0050] 100. Blind hole;

[0051] 101. Main body;

[0052] 102. Convex hook;

[0053] 103. End button;

[0054] 104. Handle;

[0055] 111. Cavity;

[0056] 112. Limit structure;

[0057] 113. Hook;

[0058] 201. First through hole;

[0059] 202. First notch;

[0060] 203. Insert piece;

[0061] 204. Rotor cutting edge;

[0062] 205. Rotor gripping part;

[0063] 211. Accommodating groove;

[0064] 212. Second through hole;

[0065] 213. First counterbore;

[0066] 214. Second counterbore;

[0067] 215. Second notch;

[0068] 216. Stator cutting edge;

[0069] 217. Stator gripping part;

[0070] 300. First circle;

[0071] 301. First concentric circle;

[0072] 400. Second circle;

[0073] 401. Second concentric circle;

[0074] 402. Center of the second concentric circle

[0075] 1011. Top wall;

[0076] 1012. Bottom wall;

[0077] 1013. First side wall;

[0078] 1014. Second side wall;

[0079] D1. First notch width;

[0080] D2. Body width;

[0081] D3. Second notch width. Detailed implementation mode

[0082] Typical embodiments that embody the features and advantages of the present application will be described in detail in the following description. It should be understood that the present application can have various variations in different embodiments, all of which do not depart from the scope of the present application, and the descriptions and drawings therein are for illustrative purposes in nature and not intended to limit the present application.

[0083] In the following description of different exemplary embodiments of the present application, reference is made to the accompanying drawings, which form a part of the present application, and in which are shown by way of example different exemplary structures, systems, and steps that can implement various aspects of the present application. It should be understood that other specific solutions of components, structures, exemplary devices, systems, and steps can be used, and structural and functional modifications can be made without departing from the scope of the present application. When introducing the elements / components / etc. described and / or illustrated herein, the terms "comprising", "including", and "having" are used to mean an open inclusion and are meant to mean that there can be additional elements / components / etc. in addition to the listed elements / components / etc.

[0084] Relative terms such as "lower" or "bottom" and "upper" or "top" may be used herein to describe the relationship of one element to another element, as shown in the figures. It should be understood that the relative terms are intended to include different orientations of the device in addition to the orientations shown in the figures. For example, if the device in one figure is flipped, an element described as "lower" or "bottom" of other elements will be oriented "upper" or "top" of other elements. Thus, the exemplary term "lower" can include the orientations of "lower" and "upper", and the term "bottom" can include the orientations of "bottom" and "top", depending on the specific orientation of the figure. Similarly, if the device in one figure is flipped, an element described as "lower" or "bottom" of other elements will be oriented as "upper" or "top" of other elements. Thus, the exemplary terms "bottom" or "below" can include the orientations of upper and lower.

[0085] As Figures 1 to 7As shown, the rotary locking device 1 for the scissors 2 of the present application, the scissors 2 includes a rotor part 20 and a stator part 21, the rotor part 20 and the stator part 21 are connected by a rivet 30, and the rotor part 20 can rotate relative to the stator part 21 around the axis of the rivet 30. The rotary locking device 1 includes a knob 10, which is arranged on the stator part 21. The knob 10 includes a main body 101, and the knob 10 can rotate around the axis of the main body 101. The axis of the main body 101 is parallel to the axis of the rivet 30. The main body 101 has a top wall 1011, a bottom wall 1012, a first side wall 1013 and a second side wall 1014. On a plane perpendicular to the axis of the main body 101, the orthographic projections of the top wall 1011 and the bottom wall 1012 are two arcs on a first circle 300 with the axis of the main body 101 as the center. On a plane perpendicular to the axis of the main body 101, the orthographic projections of the first side wall 1013 and the second side wall 1014 are two arcs of a first concentric circle 301 with the axis of the rivet 30 as the center. The rotor part 20 is provided with a first through hole 201, and the diameter of the first through hole 201 is greater than the diameter of the first circle 300. The main body 101 can rotate in the first through hole 201. The rotor part 20 is provided with a first notch 202, and the first notch 202 communicates with the first through hole 201. When the main body 101 rotates to correspond to the first notch 202, the main body 101 can move relative to the rotor part 20 through the first notch 202, and the rotor part 20 rotates relative to the stator part 21 around the axis of the rivet 30; when the main body 101 rotates to other positions, the knob 10 locks the rotor part 20 and the stator part 21.

[0086] For the rotary locking device 1 of the present application, the main body 101 of the knob 10 can rotate around its own axis in the first through hole 201 of the rotor part 20, so that when the positions of the main body 101 of the knob 10 and the first notch 202 of the rotor part 20 correspond, the main body 101 can move relative to the rotor part 20 through the first notch 202, and the rotor part 20 rotates relative to the stator part 21 around the axis of the rivet 30; realizing the opening and use of the scissors 2. When the main body 101 rotates to other positions, the positions of the main body 101 of the knob 10 and the first notch 202 of the rotor part 20 are staggered, and the main body 101 of the knob 10 is trapped in the first through hole 201 by the hole wall of the first through hole 201 and cannot move relative to the rotor part 20, so that the knob 10 locks the rotor part 20 and the stator part 21.

[0087] In this embodiment, refer to Figures 1 to 5 and Figure 7, at one end of the main body 101 facing the stator portion 21, a convex hook 102 is provided. The convex hook 102 extends outward from the top wall 1011 along the first concentric circle 301. In a plane perpendicular to the axis of the main body 101, the orthographic projection of the surface of the convex hook 102 away from the top wall 1011 is on the second circle 400 with the center being the axis of the main body 101, and the diameter of the second circle 400 is greater than the diameter of the first through hole 201. The setting of the convex hook 102 can prevent the knob 10 from falling off the stator portion 21.

[0088] In this embodiment, referring to Figures 1 to 5 , at one end of the main body 101 facing away from the stator portion 21, an end button 103 is connected. A handle 104 is provided on the surface of the end button 103 facing away from the main body 101. The setting of the end button 103 and the handle 104 facilitates user operation and can beautify the appearance after the knob 10 is installed on the stator portion 21. In this embodiment, a blind hole 100 is provided inside the main body 101. The blind hole 100 is provided at one end of the main body 101 facing away from the end button 103, which can reduce the weight of the knob 10.

[0089] In this embodiment, referring to Figure 1 , Figures 8 to 10 , the rotary locking device 1 further includes an end cover 11. The end cover 11 is provided on the stator portion 21. The end cover 11 has a cavity 111. The main body 101 can rotate in the cavity 111. A limiting structure 112 is provided in the cavity 111. The limiting structure 112 limits the rotation angle of the main body 101 by restricting the convex hook 102. By providing the end cover 11 with the cavity 111, the main body 101 of the knob 10 can rotate in the cavity 111. The limiting structure 112 is provided in the end cover 11. When the knob 10 is rotated, for example, both the convex hook 102 and the main body 101 rotate in the clockwise direction. When the convex hook 102 rotates to touch the limiting structure 112, the knob 10 can no longer continue to rotate in the clockwise direction and can only rotate in the opposite direction (counterclockwise direction).

[0090] In this embodiment, referring to Figures 8 to 10 , the limiting structure 112 is in a "C" shape. The "C" shape can achieve limiting without blocking the 360-degree rotation of the main body 101. In this embodiment, the "C"-shaped limiting structure 112 can be set to occupy 240 degrees, and the knob 10 can be rotated only within an angle of 120 degrees by restricting the convex hook 102.

[0091] In this embodiment, referring to Figures 8 to 10 , the end cover 11 is provided with a hook 113. The hook 113 connects the end cover 11 to the stator portion 21. The setting of the hook 113 can firmly clamp the end cover 11 to the stator portion 21. In this embodiment, the number of hooks 113 is three. There are hook grooves on both sides of each hook 113. The setting of the hook grooves can achieve the elastic clamping of the hook 113, facilitating the installation and disassembly of the end cover 11.

[0092] As Figures 1 to 18 shown, the scissors 2 of the present application include a rotor part 20, a stator part 21, and the above-mentioned rotary locking device 1. The rotor part 20 includes a rotor blade part 204 and a rotor grip part 205, and the stator part 21 includes a stator blade part 216 and a stator grip part 217. The rotary locking device 1 is arranged on the rotor grip part 205 and the stator grip part 217, and the rivet 30 is arranged on the rotor blade part 204 and the stator blade part 216. By using the above-mentioned rotary locking device 1, the rotor part 20 and the stator part 21 of the scissors 2 can rotate freely relative to each other around the axis of the rivet 30 during use, and when storing, only rotate the knob 10 to lock the rotor part 20 and the stator part 21, which is convenient for storage and has a simple structure.

[0093] In this embodiment, as Figure 1 、 Figures 6 to 7 and Figures 13 to 18 shown, the rotor part 20 includes an insert piece 203, and the first through hole 201 and the first notch 202 are both arranged on the insert piece 203. When the knob 10 can move relative to the first insert piece 203, the rotor part 20 rotates around the axis of the rivet 30 relative to the stator part 21; when the knob 10 cannot move relative to the first insert piece 203, the knob 10 locks the rotor part 20 and the stator part 21. The arrangement of the insert piece 203 can achieve free rotation and convenient storage between the rotor part 20 and the stator part 21, and will not reduce the strength of the rotor part 20 and the stator part 21.

[0094] In this embodiment, referring to Figures 6 to 7 , in the plane perpendicular to the axis of the first through hole 201, the positive projections of the two side walls of the first notch 202 are two arcs of the first concentric circles 301 with the axis of the rivet 30 as the center. The positive projections of the two side walls of the first notch 202, and the positive projections of the first side wall 1013 and the second side wall 1014 are both two arcs of the first concentric circles 301 with the axis of the rivet 30 as the center, which can ensure that when the rotor part 20 of the scissors 2 rotates relative to the stator part 21, the main body 101 of the knob 10 can smoothly pass through the first notch 202, facilitating the use of the scissors 2. R1 and R2 in the drawings represent the radii of the concentric circles, only for more clearly showing the concentric circles.

[0095] In this embodiment, referring to Figures 1 to 7 , define the distance between the two side walls of the first notch 202 as the width D1 of the first notch 202, and the distance between the first side wall 1013 and the second side wall 1014 as the width D2 of the main body 101, then the width D1 of the first notch 202 is greater than the width D2 of the main body 101. The width of the first notch 202 being greater than the width of the main body 101 is beneficial for the main body 101 to smoothly pass through the first notch 202, beneficial for improving the smoothness of the operation of the scissors 2, and improving the user experience.

[0096] As Figures 11 to 12 、 Figure 14 and Figure 17 shown, the stator part 21 is provided with a second through hole 212, a first counterbore 213 and a second counterbore 214. The second through hole 212 has a second notch 215. The second through hole 212 and the second notch 215 communicate the first counterbore 213 and the second counterbore 214. The main body 101 passes through the second through hole 212. After the convex hook 102 passes through the second notch 215, the main body 101 is rotated, and the convex hook 102 is stuck in the second counterbore 214. The second counterbore 214 accommodates the end cover 11. The first notch 202 is mainly provided for the convex hook 102 of the main body 101 of the knob 10 to pass through. The second through hole 212 is used to accommodate the main body 101 of the knob 10. The first counterbore 213 is used to accommodate the end button 103 of the knob 10.

[0097] In this embodiment, referring to Figure 1 、 Figure 14 and Figure 17 , the stator part 21 is provided with a receiving groove 211 capable of receiving the insertion piece 203. The provision of the receiving groove 211 can receive the insertion piece 203 of the rotor part 20. The receiving groove 211 passes through the side wall of the first counterbore 213 and does not affect the integrity of the second through hole 212, and can realize the switching between the two states of locking and storing the scissors 2 by the locking device of the knob 10 and using the scissors 2.

[0098] In this embodiment, the diameter of the second through hole 212 is equal to the diameter of the first through hole 201. Define the distance between the two side walls of the second notch 215 as the width D3 of the second notch 215. Then the width D3 of the second notch 215 is equal to the width D1 of the first notch 202. The equal width of the second notch 215 and the first notch 202 is conducive to the smooth passing of the main body 101, making the use of the scissors 2 smooth.

[0099] In this embodiment, referring to Figure 11 , on the plane perpendicular to the axis of the second through hole 212, the positive projections of the two side walls of the second notch 215 are two arcs of the second concentric circles 401. Taking the axis of the second through hole 212 as the center of symmetry, the center 402 of the second concentric circles 401 and the axis of the rivet 30 are centrosymmetric. The center 402 of the second concentric circles 401 of the side wall of the second notch 215 being centrosymmetric with the axis of the rivet 30 can enable the main body 101 to pass through the second notch 215 smoothly. R1 and R2 in the drawings represent the radii of the concentric circles, only for more clearly showing the concentric circles.

[0100] In this embodiment, referring to Figure 15When the rotor part 20 is latched with the stator part 21, the first through hole 201 and the second through hole 212 overlap, and the directions of the second notch 215 and the first notch 202 are opposite. The overlapping of the first through hole 201 and the second through hole 212 ensures that the main body 101 of the knob 10 can rotate in the first through hole 201 and the second through hole 212. The opposite directions of the first notch 202 and the second notch 215 enable the knob 10 to smoothly disengage from the rotor part 20 without detaching from the stator part 21, realizing the rotation of the rotor part 20 relative to the stator part 21.

[0101] On the stator part 21, there are markings for unlocking and locking, corresponding to the use of the scissors 2 and the storage of the scissors 2 respectively. The scissors 2 of the present application can be semi-automatic or of other types. The rotary latching device of the present application can be used for semi-automatic scissors or other types of scissors.

[0102] In this exemplary embodiment, the rotary latching device 1 and the scissors 2 proposed in the present application are described by taking the stationery field as an example. It is easy for those skilled in the art to understand that in order to apply the relevant designs of the present application to other fields, various modifications, additions, substitutions, deletions or other changes are made to the following specific embodiments, and these changes are still within the scope of the principles of the rotary latching device 1 and the scissors 2 proposed in the present application.

[0103] It should be noted here that the rotary latching device 1 and the scissors 2 shown in the drawings and described in this specification are only a few examples of the many rotary latching devices 1 and scissors 2 that can adopt the principles of the present application. It should be clearly understood that the principles of the present application are by no means limited to any details of any components of the rotary latching device 1 and the scissors 2 shown in the drawings or described in this specification.

[0104] The above is a detailed description of several exemplary embodiments of the rotary latching device 1 and the scissors 2 proposed in the present application. The following will give an exemplary description of the usage process of the rotary latching device 1 and the scissors 2 proposed in the present application.

[0105] Combined with the attached Figures 1 to 18 , the usage process of the rotary latching device 1 and the scissors 2 proposed in the present application is as follows.

[0106] During installation, the rotor part 20 is installed along the inserting piece 203 into the receiving groove 211 of the stator part 21. At this time, the first through hole 201 and the second through hole 212 overlap, and the directions of the second notch 215 and the first notch 202 are opposite. The knob 10 is inserted through the second through hole 212 and the second notch 215 of the stator part 21. At this time, the main body 101 of the knob 10 is located in the second through hole 212, the convex hook 102 of the knob 10 passes through the second notch 215 and is located in the second counterbore 214, and the end button 103 of the knob 10 is located in the first counterbore 213. The knob 10 is rotated 180 degrees. At this time, the convex hook 102 of the knob 10 rotates in the second counterbore 214 and is stuck to the bottom wall of the second counterbore 214. The end cover 11 is installed into the second counterbore 214 according to the position where the limiting structure 112 blocks the second notch 215. At this time, when the knob 10 rotates, the limiting structure 112 of the end cover 11 will limit the rotation angle of the knob 10 by restricting the convex hook 102, and the limiting structure 112 blocks the position of the second notch 215, which can also prevent the convex hook 102 from passing through the second notch 215, thereby preventing the knob 10 from detaching from the stator part 21.

[0107] During use, when the scissors 2 are in the stored state, refer to Figure 13 , the knob 10 is in the locked position. At this time, the main body 101 of the knob 10 cannot pass through the first notch 202 of the inserting piece 203 of the rotor part 20. Refer to Figure 14 , the convex hook 102 of the knob 10 abuts against one end of the limiting structure 112 of the end cover 11. Refer to Figure 15 , the main body 101 of the knob 10 interferes with the first notch 202 of the inserting piece 203 of the rotor part 20, locking the rotor part 20 to the stator part 21 and realizing the storage of the scissors 2.

[0108] When the scissors 2 are in the open state, refer to Figure 16 the knob 10 is in the unlocked position. Refer to Figure 17 , the convex hook 102 of the knob 10 abuts against the other end of the limiting structure 112 of the end cover 11. Refer to Figure 18 , the main body 101 of the knob 10 can disengage from the first notch 202 of the inserting piece 203 of the rotor part 20, and the rotor part 20 rotates relative to the stator part 21 to realize the opening of the scissors 2. After the scissors 2 are opened, during use, the main body 101 of the knob 10 rotates around the rivet 30 along the first notch 202 of the inserting piece 203. Since the first side wall 1013 and the second side wall 1014 of the main body 101, as well as the two side walls of the first notch 202, are all the first concentric circles 300 with the axis of the rivet 30 as the center, and the width D1 of the first notch 202 is slightly larger than the width D2 of the main body 101, the main body 101 can smoothly rotate along the first notch 202 of the inserting piece 203, making the scissors 2 smooth and comfortable to use.

[0109] After the scissors 2 are used and need to be stored, only the knob 10 needs to be rotated so that the main body 101 of the knob 10 cannot rotate from the first notch 202 of the insert piece 203.

[0110] Through the above-mentioned use process of the rotary locking device 1 and the scissors 2 of the present application, it can be obtained that for the rotary locking device 1 and the scissors 2 of the present application, by setting the main body 101 of the knob 10 to cooperate with the first through hole 201 and the first notch 202 of the rotor part 20, when the rotor part 20 of the scissors 2 rotates relative to the stator part 21 around the axis of the rivet 30, the main body 101 of the knob 10 can smoothly avoid the rotor part 20 and will not interfere with the rotor part 20. When storing, only the knob 10 needs to be rotated, which is simple to operate and has a simple structure.

[0111] In summary, the rotary locking device 1 for the scissors 2 proposed in the present application, the scissors 2 include a rotor part 20 and a stator part 21, the rotor part 20 and the stator part 21 are connected by a rivet 30, and the rotor part 20 can rotate relative to the stator part 21 around the axis of the rivet 30. The rotary locking device 1 includes a knob 10, the knob 10 is arranged on the stator part 21, the knob 10 includes a main body 101, the knob 10 can rotate around the axis of the main body 101, the axis of the main body 101 is parallel to the axis of the rivet 30, and the main body 101 has a top wall 1011, a bottom wall 1012, a first side wall 1013 and a second side wall 1014. On a plane perpendicular to the axis of the main body 101, the orthographic projections of the top wall 1011 and the bottom wall 1012 are two arcs on the first circle 300 with the axis of the main body 101 as the center of the circle. On a plane perpendicular to the axis of the main body 101, the orthographic projections of the first side wall 1013 and the second side wall 1014 are two arcs of the first concentric circle 301 with the axis of the rivet 30 as the center of the circle. The rotor part 20 is provided with a first through hole 201, the diameter of the first through hole 201 is larger than the diameter of the first circle 300, and the main body 101 can rotate in the first through hole 201. The rotor part 20 is provided with a first notch 202, the first notch 202 communicates with the first through hole 201, when the main body 101 rotates to correspond to the first notch 202, the main body 101 can move relative to the rotor part 20 from the first notch 202, and the rotor part 20 rotates relative to the stator part 21 around the axis of the rivet 30; when the main body 101 rotates to other positions, the knob 10 locks the rotor part 20 and the stator part 21. The structure is simple, the operation is convenient, and it is convenient for the storage and use of semi-automatic scissors and other types of scissors.

[0112] The scissors 2 proposed in the present application include a rotor part 20, a stator part 21 and the above-mentioned rotary locking device 1. The scissors 2 of the present application have a smooth use, a simple storage, and the rotary locking device has a simple structure, which is beneficial to the wide application of the scissors and improves the user experience.

[0113] Exemplary embodiments of the rotary latch device and scissors proposed in the present application have been described and / or illustrated in detail above. However, the embodiments of the present application are not limited to the specific embodiments described herein. On the contrary, the components and / or steps of each embodiment can be used independently and staggered from other components and / or steps described herein. Each component and / or each step of one embodiment can also be combined with other components and / or steps of other embodiments. When introducing the elements / components / etc. described and / or illustrated herein, terms such as "a", "an", and "the above" are used to indicate the existence of one or more elements / components / etc.

[0114] The embodiments of the present application are not limited to the specific embodiments described herein. On the contrary, the components of each embodiment can be used independently and staggered from other components described herein. Each component of one embodiment can also be combined with other components of other embodiments. In the description of this specification, the description of terms such as "one embodiment", "some embodiments", "other embodiments", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or instance. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0115] In an embodiment, the term "plurality" refers to two or more, unless otherwise clearly defined. Terms such as "installed", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiment can be understood according to specific circumstances.

[0116] Although the rotary latch device and scissors proposed in the present application have been described according to different specific embodiments, those skilled in the art will recognize that changes can be made to the implementation of the present application within the spirit and scope of the claims.

Claims

1. A rotary locking device for scissors, the scissors comprising a rotor part and a stator part, the rotor part and the stator part being connected by a rivet, the rotor part being able to rotate relative to the stator part about the axis of the rivet, characterized in that, The rotary locking device includes: A knob, disposed on the stator portion. The knob includes a main body, and the knob can rotate around the axis of the main body. The axis of the main body is parallel to the axis of the rivet. The main body has a top wall, a bottom wall, a first side wall, and a second side wall; On a plane perpendicular to the axis of the main body, the orthographic projections of the top wall and the bottom wall are two arcs on a first circle centered at the axis of the main body; On a plane perpendicular to the axis of the main body, the orthographic projections of the first side wall and the second side wall are two arcs of a first concentric circle centered at the axis of the rivet; The rotor portion is provided with a first through hole, the diameter of the first through hole is greater than the diameter of the first circle, and the main body can rotate in the first through hole; The rotor portion is provided with a first notch, the first notch communicates with the first through hole. When the main body rotates to correspond to the first notch, the main body can move relative to the rotor portion through the first notch, and the rotor portion rotates relative to the stator portion around the axis of the rivet; when the main body rotates to other positions, the knob locks the rotor portion and the stator portion.

2. The rotary latch device according to claim 1, wherein The rotary locking device further includes a convex hook, the convex hook is disposed at one end of the main body facing the stator portion, and the convex hook extends outward from the top wall along the first concentric circle; On a plane perpendicular to the axis of the main body, the orthographic projection of the surface of the convex hook away from the top wall is on a second circle centered at the axis of the main body, and the diameter of the second circle is greater than the diameter of the first through hole.

3. The rotary latch device according to claim 2, wherein, One end of the main body facing away from the stator portion is connected with an end button, and a handle is arranged on the surface of the end button facing away from the main body.

4. The rotary latch device according to claim 3, characterized in that, The rotary locking device further includes an end cover, the end cover is disposed on the stator portion, the end cover has a cavity, the main body can rotate in the cavity, and a limiting structure is arranged in the cavity. The limiting structure limits the rotation angle of the main body by limiting the convex hook.

5. The rotary latch device according to claim 4, wherein The limiting structure is in a "C" shape.

6. The rotary latch device according to claim 4 or 5, characterized in that, The end cover is provided with a hook, and the hook connects the end cover to the stator portion.

7. A pair of scissors, comprising a rotor part, a stator part and a rotary locking device, characterized in that, Wherein the rotary locking device adopts the rotary locking device according to any one of claims 1-6.

8. The scissors according to claim 7, characterized in that, The rotor portion includes a tab, the first through hole and the first notch are both arranged on the tab. When the knob can move relative to the tab, the rotor portion rotates relative to the stator portion around the axis of the rivet; when the knob cannot move relative to the tab, the knob locks the rotor portion and the stator portion.

9. The scissors according to claim 8, characterized in that, On a plane perpendicular to the axis of the first through hole, the orthographic projections of the two side walls of the first notch are two arcs of a first concentric circle centered at the axis of the rivet.

10. The scissors according to claim 9, characterized in that, Define the distance between the two side walls of the first notch as the width of the first notch, and the distance between the first side wall and the second side wall as the width of the main body. Then the width of the first notch is greater than the width of the main body.

11. The scissors according to claim 8, characterized in that, The stator portion is provided with a receiving groove capable of receiving the tab.

12. The scissors according to claim 7, characterized in that, The stator part is provided with a second through hole, a first counterbore and a second counterbore. The second through hole has a second notch, and the second through hole and the second notch communicate the first counterbore and the second counterbore. The rotary locking device further includes a convex hook. After the convex hook passes through the second notch, the main body is rotated, and the convex hook is clamped in the second counterbore.

13. The scissors according to claim 12, characterized in that, The diameter of the second through hole is equal to the diameter of the first through hole. Define the distance between the two side walls of the second notch as the width of the second notch, and define the distance between the two side walls of the first notch as the width of the first notch. Then the width of the second notch is equal to the width of the first notch.

14. The scissors according to claim 12, characterized in that, On a plane perpendicular to the axis of the second through hole, the positive projections of the two side walls of the second notch are two arcs of second concentric circles. With the axis of the second through hole as the symmetry center, the center of the second concentric circle and the axis of the rivet are centrosymmetric.

15. The scissors according to any one of claims 12 to 14, characterized in that, The rotary locking device further includes an end cover, and the second counterbore accommodates the end cover.

16. The scissors according to any one of claims 12 to 14, characterized in that, When the rotor part is locked with the stator part, the first through hole and the second through hole overlap, and the directions of the second notch and the first notch are opposite.

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