Rotary locking device and scissors

Abstract

The invention 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] The present application relates to the field of stationery, and in particular to a rotary locking device and a pair of scissors. Background Art

[0002] Scissors are a common item in daily life, usually composed of a rotor part, a stator part and a rivet. The rotor part is usually operated by pressing and lifting the thumb, so that the rotor part can rotate relative to the stator part around the rivet. Scissors that use a drive device to replace the thumb can be called "semi-automatic scissors". Semi-automatic scissors usually require a locking structure to realize the storage of the scissors. The locking structure in the prior art is complex in structure and cumbersome in operation, which is not conducive to the widespread application of scissors. Summary of the invention

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

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

[0005] According to one aspect of the present application, a rotary lock device for scissors is provided, the scissors comprising a rotor part and a stator part, the rotor part and the stator part are connected by a rivet, and the rotor part can rotate relative to the stator part around the axis of the rivet. The rotary lock device comprises: a knob, which is arranged on the stator part, the knob comprises a main body, 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, and 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 whose center is 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 with the axis of the rivet as the center. 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 is connected to the first through hole. When the main body is rotated 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 around the axis of the rivet relative to the stator part; when the main body is rotated to other positions, the knob locks the rotor part and the stator part.

[0006] According to one embodiment of the present application, the rotary lock device further comprises a convex hook, the convex hook is arranged at one end of the main body facing the stator part, and the convex hook extends from the top wall along the first concentric circle to the outside of the top wall. 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 whose center is the axis of the main body, and the diameter of the second circle is greater than the diameter of the first through hole.

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

[0008] According to one of the embodiments of the present application, the rotary locking device also includes an end cover, which is arranged on the stator part, and the end cover has a cavity, and the main body can rotate in the cavity. A limiting structure is arranged in the cavity, and the limiting structure limits the rotation angle of the main body by limiting the convex hook.

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

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

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

[0012] According to one embodiment of the present application, the rotor part includes an insert, the first through hole and the first notch are both arranged on the insert, and when the knob is able to move relative to the first insert, the rotor part rotates relative to the stator part around the axis of the rivet; when the knob is unable to move relative to the first insert, the knob locks the rotor part and the stator part.

[0013] According to one of the embodiments 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 arcs of two first concentric circles with the axis of the rivet as the center.

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

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

[0016] According to one embodiment of the present application, the stator part is provided with a second through hole, a first countersunk hole and a second countersunk hole, the second through hole has a second notch, the second through hole and the second notch connect the first countersunk hole and the second countersunk hole, after the convex hook passes through the second notch, the main body is rotated, and the convex hook is stuck in the second countersunk hole.

[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, the distance between the two side walls of the second notch is defined as the width of the second notch, and the distance between the two side walls of the first notch is defined 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 of the embodiments of the present application, on a plane perpendicular to the axis of the second through hole, the orthographic projections of the two side walls of the second notch are arcs of two second concentric circles, with the axis of the second through hole as the center of symmetry, and the center of the second concentric circle is centrally symmetrical with the axis of the rivet.

[0019] According to one of the embodiments of the present application, the rotary locking device further includes an end cover, and the second countersunk hole accommodates the end cover.

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

[0021] It can be seen from the above technical solutions that the advantages and positive effects of the rotary lock device proposed in this application are:

[0022] The rotary locking device proposed in the present application has an axis of the knob body parallel to the axis of the rivet, and the 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 body, the orthographic projections of the top wall and the bottom wall are two arcs on a first circle whose center is the axis of the body. This allows the body to rotate around its own axis. The orthographic projections of the first side wall and the second side wall are two arcs of a first concentric circle whose center is the axis of the rivet. This allows the knob body to smoothly avoid the rotor part when the rotor part of the scissors rotates relative to the stator part around the axis of the rivet, and will not interfere with the rotor part.

[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 is connected to the first through hole. When the main body rotates to the corresponding 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 with the stator part. The rotary locking device of the present application is provided with a knob main body and the first through hole and the first notch of the rotor part to cooperate with each other, so as to realize the use and storage of the scissors, and has a simple structure and is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Various objects, features and advantages of the present application will become more apparent by considering the following detailed description of the preferred embodiments of the present application in conjunction with the accompanying drawings. The accompanying drawings are merely exemplary illustrations of the present application and are not necessarily drawn to scale. In the accompanying drawings, the same reference numerals always represent the same or similar parts. Among them:

[0025] Figure 1 It is a schematic diagram of the structure of the rotary locking device and the scissors of the present application.

[0026] Figure 2 yes Figure 1 Schematic diagram of the structure of the knob of the rotary locking device.

[0027] Figure 3 yes Figure 1 A schematic diagram of the structure of the knob shown at another angle.

[0028] Figure 4 yes Figure 1 Rear view of the knob shown.

[0029] Figure 5 yes Figure 1 Side view of the knob shown.

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

[0031] Figure 7 yes Figure 6 Schematic diagram of the enlarged structure of the plug.

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

[0033] Fig. 9 yes Figure 8 Front view of the end cap shown.

[0034] Fig.10 yes Fig. 9 Rear view of the end cap shown.

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

[0036] Fig.12 yes Fig.11 Schematic diagram of the enlarged structure of part of the stator grip.

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

[0038] Fig.14 yes Fig.13 Schematic diagram of the positional relationship between the knob and the end cap when the scissors are in the stored state.

[0039] Fig.15 yes Fig.13 The schematic diagram shows the positional relationship between the knob, the rotor part and the stator part after removing the end cover when the scissors are in the stored state.

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

[0041] Fig.17 yes Fig.16 A schematic diagram showing the positional relationship between the knob and the end cap when the scissors are in the open state.

[0042] Fig.18 Fig.16 The schematic diagram shows the positional relationship between the knob, the rotor part and the stator part after the end cover is removed when the scissors are in the open state.

[0043] 1. Rotating locking device;

[0044] 2. Scissors;

[0045] 10. Knob;

[0046] 11. End cap;

[0047] 20. Rotor;

[0048] 21. Stator part;

[0049] 30. Rivets;

[0050] 100. Blind hole;

[0051] 101. Subject;

[0052] 102. Convex hook;

[0053] 103. End button;

[0054] 104. Handle;

[0055] 111. Cavity;

[0056] 112. Limiting structure;

[0057] 113. Hook;

[0058] 201. A first through hole;

[0059] 202. First gap;

[0060] 203. Insert;

[0061] 204. Rotor blade;

[0062] 205. Rotor grip;

[0063] 211. Receiving tank;

[0064] 212. Second through hole;

[0065] 213. First countersunk hole;

[0066] 214. Second countersunk hole;

[0067] 215. The second gap;

[0068] 216. Stator blade;

[0069] 217. Stator grip;

[0070] 300. First Circle;

[0071] 301. The first concentric circle;

[0072] 400. Second round;

[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 gap width;

[0080] D2. Body width;

[0081] D3. Second gap width. DETAILED DESCRIPTION

[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 changes in different embodiments without departing from the scope of the present application, and the descriptions and drawings therein are essentially for illustrative purposes rather than for limiting 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 different exemplary structures, systems and steps that can implement multiple aspects of the present application are shown by way of example. It should be understood that other specific schemes 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 represent the meaning of open-ended inclusion and mean that in addition to the listed elements / components / etc., there may be additional elements / components / etc.

[0084] Relative terms such as "under" 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 relative terms are intended to include different orientations of the device in addition to the orientation shown in the figures. For example, if the device in one figure is turned over, the element described as being "under" or "bottom" of other elements will be oriented "on" or "top" of other elements. Therefore, the exemplary term "under" may include the orientations of "under" and "top", and the term "bottom" may include the orientations of "bottom" and "top", depending on the specific orientation of the figure. Similarly, if the device in one figure is turned over, the element described as being "under" or "bottom" of other elements will be oriented to be "on" or "top" of other elements. Therefore, the exemplary terms "bottom" or "below" may include the orientations of top and bottom.

[0085] like Figures 1 to 7As shown, the rotary lock device 1 for scissors 2 of 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 lock device 1 includes a knob 10, which is arranged on the stator part 21, and the knob 10 includes a main body 101, and the knob 10 can rotate around the axis of the main body 101, and 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 whose center is the axis of the main body 101. 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, the diameter of the first through hole 201 is greater 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, and the first notch 202 is connected to the first through hole 201. When the main body 101 rotates to the corresponding 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 with the stator part 21.

[0086] In the rotary lock 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 main body 101 of the knob 10 and the first notch 202 of the rotor part 20 are in corresponding positions, 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, so that the scissors 2 can be opened for use. When the main body 101 rotates to other positions, the main body 101 of the knob 10 and the first notch 202 of the rotor part 20 are offset, 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 with the stator part 21.

[0087] In this embodiment, see Figures 1 to 5 and Figure 7A convex hook 102 is provided at one end of the main body 101 facing the stator part 21, and the convex hook 102 extends from the top wall 1011 along the first concentric circle 301 to the outside of the top wall 1011. On 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 a second circle 400 whose center is 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 provision of the convex hook 102 can prevent the knob 10 from falling off the stator part 21.

[0088] In this embodiment, see Figures 1 to 5 The end of the main body 101 facing away from the stator 21 is connected to a terminal button 103, and the surface of the terminal button 103 facing away from the main body 101 is provided with a handle 104. The terminal button 103 and the handle 104 are provided to facilitate user operation and to beautify the appearance of the knob 10 after being installed on the stator 21. In this embodiment, a blind hole 100 is provided inside the main body 101, and the blind hole 100 is provided at the end of the main body 101 facing away from the terminal button 103, so as to reduce the weight of the knob 10.

[0089] In this embodiment, see Figure 1 , Figures 8 to 10 The rotary lock device 1 further comprises an end cover 11, which is arranged on the stator part 21. The end cover 11 has a cavity 111, and the main body 101 can rotate in the cavity 111. A limiting structure 112 is arranged in the cavity 111. The limiting structure 112 limits the rotation angle of the main body 101 by limiting the convex hook 102. The end cover 11 with the cavity 111 is arranged, and the main body 101 of the knob 10 can rotate in the cavity 111. The limiting structure 112 is arranged in the end cover 11. When the knob 10 is rotated, for example, the convex hook 102 and the main body 101 both 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).

[0090] In this embodiment, see 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 limiting the convex hook 102.

[0091] In this embodiment, see Figures 8 to 10 The end cover 11 is provided with a hook 113, and the hook 113 connects the end cover 11 to the stator part 21. The provision of the hook 113 can firmly clamp the end cover 11 to the stator part 21. In this embodiment, the number of the hooks 113 is three, and each hook 113 has hook grooves on both sides. The provision of the hook grooves can realize the elastic clamping of the hook 113, which is convenient for the installation and removal of the end cover 11.

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

[0093] In this embodiment, if Figure 1 , Figure 6 to Figure 7 and Figures 13 to 18 As shown, the rotor part 20 includes an inserting piece 203, and the first through hole 201 and the first notch 202 are both provided on the inserting piece 203. When the knob 10 can move relative to the first inserting piece 203, the rotor part 20 rotates relative to the stator part 21 around the axis of the rivet 30; when the knob 10 cannot move relative to the first inserting piece 203, the knob 10 locks the rotor part 20 with the stator part 21. The provision of the inserting piece 203 can realize the free rotation and easy 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, see Figure 6 to Figure 7 On a plane perpendicular to the axis of the first through hole 201, the orthographic projections of the two side walls of the first notch 202 are two arcs of the first concentric circle 301 with the axis of the rivet 30 as the center. The orthographic projections of the two side walls of the first notch 202, and the orthographic projections of the first side wall 1013 and the second side wall 1014 are respectively two arcs of the first concentric circle 301 with the axis of the rivet 30 as the center, so 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, which is convenient for the use of the scissors 2. R1 and R2 in the figure represent the radii of the concentric circles, which are only for the purpose of more clearly showing the concentric circles.

[0095] In this embodiment, see Figures 1 to 7 , the distance between the two side walls of the first notch 202 is defined as the width D1 of the first notch 202, and the distance between the first side wall 1013 and the second side wall 1014 is defined as the width D2 of the main body 101, and 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 is greater than the width of the main body 101, which is conducive to the main body 101 passing through the first notch 202 smoothly, which is conducive to improving the smoothness of the operation of the scissors 2 and improving the user experience.

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

[0097] In this embodiment, see Figure 1 , Fig.14 and Fig.17 The stator part 21 is provided with a receiving groove 211 capable of receiving the inserting piece 203. The receiving groove 211 can receive the inserting piece 203 of the rotor part 20, and the receiving groove 211 passes through the side wall of the first counterbore 213 without affecting the integrity of the second through hole 212, so that the locking device of the knob 10 can switch between locking and storing the scissors 2 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, and the distance between the two side walls of the second notch 215 is defined as the width D3 of the second notch 215, and the width D3 of the second notch 215 is equal to the width D1 of the first notch 202. The width of the second notch 215 is equal to the width of the first notch 202, which is conducive to the smooth passage of the main body 101, making the scissors 2 smooth to use.

[0099] In this embodiment, see Fig.11 On a plane perpendicular to the axis of the second through hole 212, the orthographic projections of the two side walls of the second notch 215 are arcs of two second concentric circles 401, with the axis of the second through hole 212 as the center of symmetry, and the center 402 of the second concentric circle 401 and the axis of the rivet 30 are centrally symmetrical. The center 402 of the second concentric circle 401 of the side wall of the second notch 215 is centrally symmetrical with the axis of the rivet 30, so that the main body 101 can pass smoothly through the second notch 215. R1 and R2 in the drawings represent the radii of the concentric circles, which are only for the purpose of more clearly showing the concentric circles.

[0100] In this embodiment, see Fig.15When the rotor part 20 is locked with the stator part 21, the first through hole 201 and the second through hole 212 overlap, and the second notch 215 and the first notch 202 are in opposite directions. The first through hole 201 and the second through hole 212 overlap, ensuring that the main body 101 of the knob 10 can rotate in the first through hole 201 and the second through hole 212. The first notch 202 and the second notch 215 are in opposite directions, so that the knob 10 can be smoothly separated from the rotor part 20 without being separated from the stator part 21, and the rotor part 20 can rotate relative to the stator part 21.

[0101] The stator 21 is provided with unlocking and locking marks, corresponding to when the scissors 2 are in use and when the scissors 2 are stored. The scissors 2 of the present application can be semi-automatic or other types, and the rotary lock device of the present application can be used for semi-automatic scissors or other types of scissors.

[0102] In this exemplary embodiment, the rotary lock device 1 and the scissors 2 proposed in the present application are described by taking the field of stationery as an example. It is easy for those skilled in the art to understand that in order to apply the relevant design 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 lock device 1 and the scissors 2 proposed in the present application.

[0103] It should be noted here that the rotary lock device 1 and the scissors 2 shown in the drawings and described in this specification are only a few examples of many kinds of rotary lock 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 component of any detail of the rotary lock 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 locking device 1 and the scissors 2 proposed in the present application. The following is an exemplary description of the use process of the rotary locking device 1 and the scissors 2 proposed in the present application.

[0105] Combined with Figures 1 to 18 The use process of the rotary locking device 1 and the scissors 2 proposed in the present application is as follows.

[0106] During installation, the rotor part 20 is installed into the receiving groove 211 of the stator part 21 along the inserting piece 203. At this time, the first through hole 201 and the second through hole 212 overlap, and the second notch 215 and the first notch 202 are in opposite directions. The knob 10 is inserted from the second through hole 212 and the second notch 215 of the stator part 21. At this time, the 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 countersunk hole 214, and the end button 103 of the knob 10 is located in the first countersunk hole 213. The knob 10 is rotated 180 degrees. At this time, the convex hook 102 of the knob 10 is rotated in the second countersunk hole 214 and stuck in the bottom wall of the second countersunk hole 214. The end cover 11 is installed in the second countersunk hole 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 limiting the convex hook 102. The limiting structure 112 blocks the position of the second notch 215, and also prevents the convex hook 102 from passing through the second notch 215, thereby preventing the knob 10 from detaching from the stator part 21.

[0107] When the scissors 2 are in the storage state, see Fig.13 , the knob 10 is in the locked position, at which time the main body 101 of the knob 10 cannot pass through the first notch 202 of the insert 203 of the rotor part 20. Fig.14 The convex hook 102 of the knob 10 abuts against one end of the limiting structure 112 of the end cover 11, see Fig.15 The main body 101 of the knob 10 interferes with the first notch 202 of the insert 203 of the rotor part 20, and the rotor part 20 is locked to the stator part 21, so that the scissors 2 are stored.

[0108] When scissors 2 are in the open position, see Fig.16 Knob 10 is in the unlocked position, see Fig.17 The convex hook 102 of the knob 10 abuts against the other end of the limiting structure 112 of the end cover 11, see Fig.18 , the main body 101 of the knob 10 can be separated from the first notch 202 of the insert 203 of the rotor part 20, and the rotor part 20 rotates relative to the stator part 21 to open the scissors 2. After the scissors 2 are opened, when in use, the main body 101 of the knob 10 rotates around the rivet 30 along the first notch 202 of the insert 203. Since the first side wall 1013 and the second side wall 1014 of the main body 101 and the two side walls of the first notch 202 are all 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 insert 203, so that the scissors 2 are smooth and comfortable to use.

[0109] When the scissors 2 need to be stored after use, the knob 10 only needs to be rotated so that the main body 101 of the knob 10 cannot rotate from the first notch 202 of the insert 203 .

[0110] Through the above-mentioned use process of the rotary lock device 1 and the scissors 2 of the present application, it can be concluded that the rotary lock device 1 and the scissors 2 of the present application are provided with the main body 101 of the knob 10 and the first through hole 201 and the first notch 202 of the rotor part 20 to cooperate with each other, so that 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 is rotated, which is easy to operate and simple in structure.

[0111] In summary, the present application proposes a rotary lock device 1 for a pair of scissors 2, wherein the scissors 2 include a rotor portion 20 and a stator portion 21, wherein the rotor portion 20 and the stator portion 21 are connected by a rivet 30, and the rotor portion 20 can rotate relative to the stator portion 21 around the axis of the rivet 30. The rotary lock device 1 includes a knob 10, which is disposed on the stator portion 21, and includes a main body 101, wherein the knob 10 can rotate around the axis of the main body 101, wherein 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 a first circle 300 whose center is the axis of the main body 101. 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, the diameter of the first through hole 201 is greater 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, and the first notch 202 is connected to the first through hole 201. When the main body 101 rotates to the corresponding 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 around the axis of the rivet 30 relative to the stator part 21; when the main body 101 rotates to other positions, the knob 10 locks the rotor part 20 with the stator part 21. The structure is simple and easy to operate, which 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 rotary lock device 1. The scissors 2 of the present application are smooth to use and easy to store, and the rotary lock device has a simple structure, which is conducive to the wide application of the scissors and improves the user's experience.

[0113] The above describes and / or illustrates in detail exemplary embodiments of the rotary locking device and scissors proposed in the present application. 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 with other components and / or steps described herein. Each component and / or each step of an embodiment can also be used in combination with other components and / or steps of other embodiments. When introducing the elements / components / etc. described and / or illustrated herein, the terms "one", "an", and "above" are used to indicate the presence 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 with other components described herein. Each component of an embodiment can also be used in combination with other components of other embodiments. In the description of this specification, the description of the terms "one embodiment", "some embodiments", "other embodiments" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the application embodiment. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0115] In the embodiments, the term "plurality" refers to two or more than two, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed" and the like 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 embodiments can be understood according to the specific circumstances.

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

Claims

1. A rotary lock device for a pair of 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 around the axis of the rivet, characterized in that: The rotary locking device comprises: A knob, disposed on the stator part, the knob comprising a main body, the knob being rotatable around an axis of the main body, the axis of the main body being parallel to the axis of the rivet, the main 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, the orthographic projections of the top wall and the bottom wall are two arcs on a first circle whose center is 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 first concentric circles with the axis of the rivet as the center; 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 is connected to the first through hole. When the main body is rotated 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 around the axis of the rivet relative to the stator part; when the main body is rotated to other positions, the knob locks the rotor part and the stator part.

2. The rotary lock device according to claim 1, characterized in that: The rotary lock device further comprises a convex hook, which is arranged at one end of the main body facing the stator part, and the convex hook extends from the top wall along the first concentric circle to the outside of the top wall; On a plane perpendicular to the axis of the main body, a positive projection of a surface of the convex hook away from the top wall is on a second circle whose center is the axis of the main body, and a diameter of the second circle is greater than a diameter of the first through hole.

3. The rotary lock device according to claim 1 or 2, characterized in that: One end of the main body facing away from the stator part is connected with a terminal button, and a surface of the terminal button facing away from the main body is provided with a handle.

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

5. The rotary lock device according to claim 4, characterized in that: The limiting structure is in a "C" shape.

6. The rotary lock 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 part.

7. A pair of scissors, comprising a rotor part, a stator part and a rotation locking device, wherein the rotation locking device is the rotation locking device according to any one of claims 1 to 6.

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

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 with the axis of the rivet as the center.

10. The scissors according to claim 9, characterized in that: The distance between the two side walls of the first notch is defined as the width of the first notch, and the distance between the first side wall and the second side wall is defined 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 part is provided with a receiving groove capable of receiving the inserting piece.

12. The scissors as described in claim 7 are characterized in that the stator part is provided with a second through hole, a first countersunk hole and a second countersunk hole, the second through hole has a second notch, the second through hole and the second notch connect the first countersunk hole and the second countersunk hole, after the convex hook passes through the second notch, the main body is rotated, and the convex hook is stuck in the second countersunk hole.

13. The scissors as described in claim 12 are characterized in that the diameter of the second through hole is equal to the diameter of the first through hole, the distance between the two side walls of the second notch is defined as the width of the second notch, and the distance between the two side walls of the first notch is defined 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 orthographic projections of the two side walls of the second notch are arcs of two second concentric circles, with the axis of the second through hole as the center of symmetry, and the centers of the second concentric circles are centrally symmetrical with the axis of the rivet.

15. The scissors according to any one of claims 12 to 14, characterized in that: The rotary locking device further comprises 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 second notch and the first notch are in opposite directions.

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