Connecting device and electronic equipment

Abstract

The invention provides a connecting device and electronic equipment. The connecting device comprises a mandrel; the target piece is arranged on the mandrel in a sleeving mode, the first positioning piece is arranged on the mandrel in a sleeving mode, the second positioning piece is arranged on the mandrel in a sleeving mode, the target piece provides pressure towards the first positioning piece for the second positioning piece, and the first end face, facing the second positioning piece, of the first positioning piece is provided with at least three protrusions arranged at intervals. The end face, facing the first positioning piece, of the second positioning piece is a second end face, at least three grooves which are recessed relative to the direction, deviating from the first end face, of the second end face are formed in the second positioning piece, the number of the grooves is at least three, the at least three grooves are arranged at intervals, and the first positioning piece is used for being connected with the first body. The second positioning piece is used for being connected with the second body, the first positioning piece can rotate relative to the second positioning piece in the first direction, and under the condition that the included angle between the first body and the second body is the target included angle, the at least three protrusions abut against the second end face.

Description

Technical Field

[0001] This application relates to the field of electronic devices, and more particularly to a connection device and an electronic device. Background Technology

[0002] Electronic devices generally include a first body and a second body, which are rotatably connected by a connecting device. During the relative rotation of the first body and the second body, some components in the connecting device may be offset or misaligned, which reduces the rotational resistance between the first body and the second body and makes it less stable to maintain the included angle between the first body and the second body at a certain value. Summary of the Invention

[0003] This application provides a connection device and an electronic device to reduce the probability of component displacement or misalignment in the connection device and improve the stability of maintaining the included angle between the first body and the second body at a certain value.

[0004] The first aspect of this application provides a connecting device, comprising: a mandrel; a target member sleeved on the mandrel; a first positioning member sleeved on the mandrel; and a second positioning member sleeved on the mandrel. The target member provides pressure to the second positioning member toward the first positioning member. The first positioning member has at least three protrusions spaced apart from each other on its first end face toward the second positioning member. The end face of the second positioning member toward the first positioning member is a second end face. The second positioning member has a groove recessed in a direction opposite to the first end face relative to the second end face. The number of grooves is at least three, and the at least three grooves are spaced apart from each other. The first positioning member is used to connect with a first body, and the second positioning member is used to connect with a second body. The first positioning member is rotatable relative to the second positioning member in a first direction. When the included angle between the first body and the second body is a target included angle, the at least three protrusions abut against the second end face.

[0005] In some embodiments, when the included angle between the first body and the second body changes from 0° along the first direction to the first angle, the protrusion moves from inside the corresponding groove to outside the groove; during the process of the included angle between the first body and the second body changing from the first angle along the first direction to 180°, at least two protrusions abut against the second end face.

[0006] In some embodiments, during the process of the included angle between the first body and the second body changing from a first angle to a second angle along a first direction, at least three protrusions abut against the second end face.

[0007] In some embodiments, during the process of the included angle between the first body and the second body changing from the second angle to the third angle along the first direction, at least one protrusion is located at the groove corresponding to another protrusion, and at least two protrusions abut against the second end face.

[0008] In some embodiments, the protrusions are fan-shaped, and the plurality of protrusions include a first protrusion, a second protrusion, and a third protrusion arranged sequentially along a first direction; the grooves are fan-shaped, and the plurality of grooves include a first groove, a second groove, and a third groove arranged sequentially along a first direction, wherein the curvature of the convex top of the second protrusion is greater than the curvature of the groove opening of the third groove, and the curvature of the convex top of the third protrusion is greater than the curvature of the groove opening of the first groove.

[0009] In some embodiments, as the angle between the first body and the second body rotates from a third angle to 180° along the first direction, at least three protrusions abut against the second end face.

[0010] In some embodiments, the portion of each protrusion that abuts against the second end face is an abutment portion. The plurality of abutment portions include a first abutment portion and a second abutment portion. In the same circle, along the circumference of the mandrel, the ratio of the distance between the end of the first abutment portion away from the second abutment portion and the end of the second abutment portion away from the first abutment portion to the circumference of the first end face is greater than or equal to 1 / 3.

[0011] In some embodiments, in the same circle, along the circumference of the mandrel, the ratio of the distance between the midpoints of adjacent protrusions to the circumference of the first end face is greater than or equal to 0.25.

[0012] In some embodiments, on the same first end face, all the protrusions are located on the same circle along the outer edge of the mandrel radially away from the mandrel.

[0013] A second aspect of this application provides an electronic device comprising a first body, a second body, and a connecting device. The connecting device includes: a spindle; a target member sleeved on the spindle; a first positioning member sleeved on the spindle; and a second positioning member sleeved on the spindle. The target member provides pressure to the second positioning member toward the first positioning member. The first positioning member has at least three protrusions spaced apart from each other on its first end face toward the second positioning member. The end face of the second positioning member toward the first positioning member is a second end face. The second positioning member has at least three grooves recessed in a direction opposite to the first end face relative to the second end face. The at least three grooves are spaced apart from each other. The first positioning member is used to connect with the first body, and the second positioning member is used to connect with the second body. The first positioning member is rotatable relative to the second positioning member in a first direction. When the angle between the first body and the second body is the target angle, at least three protrusions abut against the second end face. Attached Figure Description Figure 1 This is a three-dimensional structural schematic diagram of the connecting device provided in the embodiments of this application; Figure 2 This is a three-dimensional structural diagram of the first positioning member and the second positioning member in a separated state according to an embodiment of this application; Figure 3This is a three-dimensional structural diagram of the first and second positioning components in a separated state, provided in an embodiment of this application, from another angle. Figure 4 This is a schematic diagram of the structure of the first positioning member and the second positioning member provided in the embodiments of this application; Figure 5 This is a simplified structural diagram showing the cooperation between the first positioning member and the second positioning member when the included angle between the first body and the second body is 0°, as provided in the embodiments of this application. Figure 6 This is a simplified structural diagram showing the cooperation between the first positioning member and the second positioning member when the included angle between the first body and the second body provided in this application embodiment is a first angle; Figure 7 This is a simplified structural diagram showing the cooperation between the first positioning member and the second positioning member when the included angle between the first body and the second body is a fourth angle, as provided in the embodiments of this application. Figure 8 This is a simplified structural diagram showing the cooperation between the first positioning member and the second positioning member when the included angle between the first body and the second body is a fifth angle, as provided in the embodiments of this application. Figure 9 This is a simplified structural diagram showing the cooperation between the first positioning member and the second positioning member when the included angle between the first body and the second body is a second angle, as provided in the embodiments of this application. Figure 10 This is a simplified structural diagram showing the cooperation between the first positioning member and the second positioning member when the included angle between the first body and the second body is the sixth angle, as provided in the embodiments of this application. Figure 11 A simplified structural diagram showing the cooperation between the first positioning member and the second positioning member when the included angle between the first body and the second body provided in this embodiment of the application is a seventh angle. Figure 12 This is a simplified structural diagram showing the cooperation between the first positioning member and the second positioning member when the included angle between the first body and the second body is a third angle, as provided in the embodiments of this application. Figure 13 This is a simplified structural diagram showing the cooperation between the first positioning member and the second positioning member when the included angle between the first body and the second body is 180°, as provided in the embodiments of this application.

[0014] Explanation of reference numerals in the attached figures 1. Connecting device; 11. Mandrel; 111. Mandrel body; 112. Mandrel extension; 12. Target component; 13. First positioning component; 131. First end face; 132. Protrusion; 132a. First protrusion; 132b. Second protrusion; 132c. Third protrusion; 1321a. First abutment portion; 1321b. Second abutment portion; 1322. Top protrusion; 1323. First side surface; 1324. Second side surface; 14. Second positioning component; 141. Second end face; 14 2. Groove; 142a, First Groove; 142b, Second Groove; 142c, Third Groove; 1421, Groove Bottom; 1422, Third Side; 1423, Fourth Side; 143, Positioning Main Body; 144, Positioning Extension; C, First Direction; 22, Second Support Member; 221, First Support Segment; 222, Second Support Segment; 23, Third Support Member; 231, Third Support Segment; 232, Fourth Support Segment; 3. Friction Plate; 4. Blocking Member; X, Spindle Axis. Detailed Implementation

[0015] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0016] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit this application; the terms “comprising” and “having”, and any variations thereof, in the specification and the foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0017] In the description of the embodiments of this application, the technical terms "first," "second," "third," "fourth," "fifth," "sixth," "seventh," etc., are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0018] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0019] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects are in an "or" relationship.

[0020] In the description of the embodiments of this application, the technical terms "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "circumferential", "radial", "axial", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed, operated or used in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0021] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the technical terms such as "installation," "connection," "linking," "communication," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0022] Below, refer to Figures 1 to 13 Some embodiments of this application will be described in detail.

[0023] What needs to be explained is Figures 4 to 13 The diagram shown is a simplified representation of the fit between the first and second positioning components. Figures 4 to 13 The process of the first positioning component rotating sequentially from 0° to 180° along the first direction while the second positioning component remains stationary is illustrated. The grid-like shaded areas represent protrusions, and the striped shaded areas represent grooves. Of course, in practical applications, the first positioning component can also remain stationary while the second positioning component rotates.

[0024] In the description of the embodiments of this application, for ease of explanation, the direction of arrow X represents the "mandrel axis", and the direction of arrow C represents the "first direction". Figure 5 The directions shown are illustrated with examples. Figure 5 The counterclockwise direction shown is the first direction. In some embodiments, the spindle axis is perpendicular to the first direction.

[0025] The first aspect of this application provides a connecting device 1, such as... Figures 1 to 3As shown, the connecting device includes a mandrel 11, a target member 12, a first positioning member 13, and a second positioning member 14. The target member 12, the first positioning member 13, and the second positioning member 14 are all sleeved on the mandrel 11. The target member 12 provides pressure to the second positioning member 14 towards the first positioning member 13. The first end face 131 of the first positioning member 13 facing the second positioning member 14 has at least three mutually spaced protrusions 132. The end face of the second positioning member 14 facing the first positioning member 13 is the second end face 141. The second positioning member 14 has a... For the second end face 141, there is a recessed groove 142 in the direction opposite to the first end face 131. The number of grooves 142 is at least three, and the at least three grooves 142 are arranged at intervals. The first positioning member 13 is used to connect with the first body (not shown), and the second positioning member 14 is used to connect with the second body (not shown). The first positioning member 13 can rotate relative to the second positioning member 14 in the first direction C. When the included angle between the first body and the second body is the target included angle, at least three protrusions 132 abut against the second end face 141.

[0026] Optionally, the target component 12 can be a helical spring or a disc spring, etc. This application does not limit the specific structure of the target component 12, as long as it can provide pressure to the second positioning component 14 toward the first positioning component 13, or provide pressure to the first positioning component 13 toward the second positioning component 14, so that the first positioning component 13 and the second positioning component 14 are pressed tightly together.

[0027] In some embodiments, such as Figure 1 As shown, the target part 12 is sleeved on the mandrel 11. The target part 12 may have a first through hole. A portion of the outer peripheral surface of the mandrel 11 may be adapted to the first through hole, thereby fixing the target part 12 and the mandrel 11 relative to each other along the circumference of the mandrel 11.

[0028] In some embodiments, such as Figure 1 As shown, the length of the target part 12 along the spindle axis X can vary. For example, when the overall size of the first positioning part 13 and the second positioning part 14 increases along the spindle axis X, the size of the target part 12 decreases. This increases the normal force between the first positioning part 13 and the second positioning part 14, thereby increasing the maximum static friction and sliding friction between the first positioning part 13 and the second positioning part 14.

[0029] In some embodiments, such as Figure 1 and Figure 2 As shown, the first positioning member 13 has a first end face 131 facing the second positioning member 14 along the spindle axis X (e.g., Figure 2 (As shown on the right end face), the first end face 131 has a protrusion 132 that protrudes along the spindle axis X toward the second positioning member 14.

[0030] In some embodiments, such as Figure 2 and Figure 4 As shown, the number of protrusions 132 is at least three. Optionally, the number of protrusions 132 can be three, four, or more. The shapes of the multiple protrusions 132 can be the same or different.

[0031] In some embodiments, the plurality of protrusions 132 may be arranged at circumferential intervals along the mandrel 11.

[0032] In some embodiments, such as Figure 1 and Figure 3 As shown, the second positioning member 14 has a second end face 141 facing the first positioning member 13 along the spindle axial direction X (e.g., Figure 3 (The left end face shown).

[0033] like Figure 3 As shown, along the axis X of the mandrel, the second positioning member 14 has a groove 142 recessed relative to the second end face 141 on the side opposite to the first end face 131. It should be noted that the second end face 141 does not include the groove 142; the second end face 141 refers to the portion of the second positioning member 14 located outside the groove 142 on the side facing the first positioning member 13.

[0034] In some embodiments, the number of grooves 142 is at least three. Optionally, the number of grooves 142 can be three, four, or more. The area and / or shape of the plurality of grooves 142 can be the same or different.

[0035] In some embodiments, such as Figure 3 and Figure 4 As shown, multiple grooves 142 can be arranged at intervals along the circumference of the mandrel 11.

[0036] In some embodiments, the number of grooves 142 may be the same as the number of protrusions 132. The protrusions 132 and the grooves 142 cooperate with each other, thereby realizing the function of the connecting device, and the specific implementation process is described in detail below.

[0037] In some embodiments, such as Figure 1 As shown, the first positioning member 13 is stationary relative to the first body (not shown), and the second positioning member 14 is stationary relative to the second body (not shown). In some embodiments, the connecting device may include a first support member (not shown) and a second support member 22. The first positioning member 13 can be connected to the first body through the first support member, and the second positioning member 14 can be connected to the second body through the second support member 22.

[0038] Optionally, the first support member and the first body can be directly connected or indirectly connected. In one specific embodiment, the first support member and the first body are connected by screws or screw fastening.

[0039] Optionally, the second support member 22 can be directly connected to the second body or indirectly connected. In one specific embodiment, the second support member 22 and the second body are connected by screws or screw fastening.

[0040] In some embodiments, the first body and the second body may be the component where the laptop screen is located and the component where the keyboard is located, respectively; the first body and the second body may also be an electronic component and a bracket for supporting the electronic component, respectively.

[0041] In some embodiments, a first positioning member 13 is sleeved on a mandrel 11. The first positioning member 13 may have a second through hole, and a portion of the outer peripheral surface of the mandrel 11 is adapted to the second through hole. For example, the cross-section of the mandrel 11 may be "D-shaped," and the cross-section of the second through hole may also be "D-shaped." This allows the first positioning member 13 and the mandrel 11 to be relatively fixed along the circumferential direction of the mandrel 11, and the first positioning member 13 and the mandrel 11 may slide relative to each other along the axial direction X of the mandrel. The first support member 22 may be fixedly connected to the mandrel 11. A second positioning member 14 is sleeved on the mandrel 11. The second positioning member 14 may rotate relative to the mandrel 11 and may also slide relative to the mandrel 11 along the axial direction X. The second support member 22 may be fixedly connected to the second positioning member 14. The first body drives the mandrel 11 to rotate along the first direction C, thereby driving the first positioning member 13 to rotate along the first direction C, thus causing the first positioning member 13 and the second positioning member 14 to rotate relative to each other.

[0042] Optionally, the first support member and the mandrel 11 can be directly connected or indirectly connected. In one specific embodiment, the first support member and the mandrel 11 can be fixedly connected by rivets. The mandrel 11 may have a shaft hole, and the rivet passes through the first support member and the shaft hole to connect the first support member and the mandrel 11.

[0043] In some embodiments, the connecting device may further include a friction plate 3, which is sleeved on the spindle 11. The friction plate 3 can be fixedly connected through a beveled square hole, and the friction plate 3 rotates with the spindle 11.

[0044] Optionally, the friction plate 3 can be located between any two components sleeved on the spindle 11 (except between the first positioning member 13 and the second positioning member 14).

[0045] In other embodiments, the second positioning member 14 is sleeved on the mandrel 11, and the second positioning member 14 has a third through hole. A portion of the outer peripheral surface of the mandrel 11 is adapted to the third through hole, thereby fixing the second positioning member 14 and the mandrel 11 relative to each other along the circumferential direction of the mandrel 11. The second support member 22 can be fixedly connected to the mandrel 11. The first positioning member 13 can be sleeved on the mandrel 11 and can rotate relative to the mandrel 11. The first support member and the first positioning member 13 can be fixedly connected. The second body drives the mandrel 11 to rotate along the first direction C, thereby driving the second positioning member 14 to rotate along the first direction C, so that the first positioning member 13 and the second positioning member 14 rotate relative to each other.

[0046] In some embodiments, such as Figure 1 As shown, the connecting device also includes a blocking member 4 sleeved on the spindle 11. The spindle 11 may include a spindle body 111 and a spindle extension 112. The target member 12, the first positioning member 13, the second positioning member 14 and the blocking member 4 are sleeved on the spindle body 111. The first support member is connected to the spindle extension 112. In the same projection plane along the spindle axis X, the projection of the spindle body 111 can be located within the projection range of the spindle extension 112. Along the spindle axis X, the target member 12, the first positioning member 13 and the second positioning member 14 can be located between the blocking member 4 and the spindle extension 112. The blocking member 4 and the spindle extension 112 can clamp the target member 12, the first positioning member 13 and the second positioning member 14. The distance between the blocking member 4 and the spindle extension 112 along the spindle axis X is fixed. During the relative rotation of the first body and the second body, which in turn drives the first positioning member 13 and the second positioning member 14 to rotate relative to each other, the compression amount of the target member 12 can change.

[0047] Optionally, such as Figure 1 As shown, the target part 12 can be located between the first positioning part 13 and the blocking part 4, or the first positioning part 13 can be located between the target part 12 and the blocking part 4.

[0048] Optionally, such as Figure 1 As shown, a friction plate 3 may be provided between the target member 12 and the first positioning member 13 or the second positioning member 14; and / or a friction plate 3 may be provided between the blocking member 4 and the target member 12; and / or a friction plate 3 may be provided between the first positioning member 13 and the spindle extension 112; and / or a friction plate 3 may be provided between the second positioning member 14 and the spindle extension 112.

[0049] In one specific embodiment, the blocking member 4 can be a nut, which is fixed to the mandrel 11 by threads and rotates with the mandrel 11.

[0050] In some embodiments, such as Figure 1As shown, the second positioning member 14 may have a positioning main body 143 and a positioning extension 144. The positioning main body 143 is sleeved on the spindle 11, and the positioning extension 144 is connected to the second support member 22.

[0051] In some embodiments, the second support member 22 may also be gap-connected to the spindle 11.

[0052] In some embodiments, such as Figure 1 As shown, the second support member 22 may have a first support segment 221 and a second support segment 222 that are relatively bent. The first support segment 221 has a first through hole through which the mandrel 11 passes, and the mandrel 11 is gap-connected to the first through hole. Furthermore, at least one side of the first support segment 221 along the mandrel axial direction X may have a friction plate 3.

[0053] In some embodiments, such as Figure 1 As shown, the connecting device 1 may also include a third support member 23, which can be sleeved on the mandrel 11, and can be gap-connected to the mandrel 11 and fixedly connected to the second support member 22.

[0054] In some embodiments, such as Figure 1 As shown, along the axis X of the mandrel, the target component 12, the first positioning component 13, and the second positioning component 14 can be connected between the second support component 22 and the third support component 23.

[0055] In some embodiments, such as Figure 1 As shown, the third support member 23 may have a relatively bent third support segment 231 and a fourth support segment 232. The third support segment 231 has a second through hole through which the mandrel 11 passes, and the mandrel 11 is gap-connected to the second through hole. Furthermore, friction plates 3 are provided on both sides of the third support segment 231 along the axial direction X of the mandrel.

[0056] In some embodiments, such as Figure 1 As shown, the second support segment 222 and the fourth support segment 232 can be connected along the thickness direction of the second support segment 222 and the thickness direction of the fourth support segment 232. Further, the second support segment 222 has a third through hole. Along the thickness direction of the second support segment 222 and the thickness direction of the fourth support segment 232, a portion of a fastener (not shown) passes through the third through hole of the fourth support segment 232 and the second support segment 222. Another portion of the fastener abuts against the side of the second support segment 222 opposite to the fourth support segment 232. The fastener is fixedly connected to the fourth support segment 232. Along the spindle axis X, the size of the third through hole can be larger than the size of the fastener. Therefore, the third support member 23 can move relative to the second support member 22 along the spindle axis X.

[0057] In one specific embodiment, the fastener can be a rivet, and the third through hole can be racetrack-shaped.

[0058] In some embodiments, such as Figure 1 As shown, the positioning extension 144 may have a protrusion, which is inserted into the second bracket 22 and fixedly connected to the second bracket 22.

[0059] In some embodiments, such as Figure 6 , Figure 7 , Figure 8 or Figure 13 As shown, during the relative rotation of the first body and the second body, at least three protrusions 132 abut against the second end face 141. For example, the number of protrusions 132 can be three, and when the included angle between the first body and the second body is the target angle, all three protrusions 132 can abut against the second end face 141. Alternatively, the number of protrusions 132 can be four, and when the included angle between the first body and the second body is the target angle, three or four protrusions 132 abut against the second end face 141.

[0060] In some embodiments, the target included angle can be any value from 0° to 180°, the specific value being related to the size range of the protrusion 132 and the groove 142.

[0061] The following example illustrates the possible values ​​of the included angle of the target, using three protrusions of size 132.

[0062] In some embodiments, Figures 5 to 13 The diagram shows the change in the fit between the protrusion 132 and the groove 142 as the included angle between the first body and the second body changes from 0° to 180°, wherein 0°, the first angle, the fourth angle, the fifth angle, the second angle, the sixth angle, the seventh angle, the third angle and 180° increase sequentially.

[0063] In a specific embodiment, in an application scenario of an electronic device, when the included angle between the first body and the second body is 0°, the mating relationship between the protrusion 132 and the groove 142 can be as follows: Figure 5 As shown, when the included angle between the first body and the second body is 40°, the mating relationship between the protrusion 132 and the groove 142 can be as follows: Figure 7 As shown, when the included angle between the first body and the second body is 80°, the mating relationship between the protrusion 132 and the groove 142 can be as follows: Figure 8 As shown, when the included angle between the first body and the second body is 120°, the mating relationship between the protrusion 132 and the groove 142 can be as follows: Figure 10As shown, when the included angle between the first body and the second body is 160°, the mating relationship between the protrusion 132 and the groove 142 can be as follows: Figure 11 As shown, when the included angle between the first body and the second body is 180°, the mating relationship between the protrusion 132 and the groove 142 can be as follows: Figure 13 As shown.

[0064] For example, such as Figures 6 to 9 As shown, when the included angle between the first body and the second body changes from a first angle along the first direction C to a second angle, all three protrusions 132 can abut against the second end face 141, and the target included angle is greater than or equal to the first angle and less than or equal to the second angle. For example... Figure 12 and Figure 13 As shown, when the included angle between the first body and the second body is rotated from the third angle along the first direction C to 180°, all three protrusions 132 can also abut against the second end face 141, with the target included angle being greater than or equal to the third angle and less than or equal to 180°.

[0065] Since at least three protrusions 132 abut against the second end face 141 when the included angle between the first body and the second body is the target included angle, the first positioning member 13 and the second positioning member 14 have more points of contact with each other. Compared with the first positioning member 13 and the second positioning member 14 having only two points of contact, the force on the first positioning member 13 and / or the second positioning member 14 along the circumferential direction of the spindle is more uniform, and the probability of the first positioning member 13 and / or the second positioning member 14 shifting along the spindle axial direction X is smaller. This reduces the change in the compression of the target member 12 caused by the first positioning member 13 and / or the second positioning member 14 shifting along the spindle axial direction X, thereby changing the normal pressure between the first positioning member 13 and the second positioning member 14, and changing the rotational resistance between the first positioning member 13 and the second positioning member 14. This reduces the probability of the stability of the included angle between the first body and the second body being maintained at a certain angle, reduces the probability of the components in the connecting device shifting or misaligning, and improves the stability of the included angle between the first body and the second body being maintained at a certain value.

[0066] In some embodiments, such as Figure 5 and Figure 6 As shown, when the angle between the first body and the second body changes from 0° along the first direction C to the first angle, the protrusion 132 moves from inside the corresponding groove 142 to outside the groove 142; as Figures 6 to 13 As shown, during the process of the included angle between the first body and the second body changing from the first angle along the first direction C to 180°, at least two protrusions 132 abut against the second end face 141.

[0067] The case where the angle between the first body and the second body is 0° refers to the case where the first body and the second body are in a closed state. The case where the angle between the first body and the second body is 180° refers to the case where the first body and the second body are fully extended.

[0068] When the included angle between the first body and the second body is 0°, the protrusion 132 is located in the corresponding groove 142.

[0069] In some embodiments, when the angle between the first body and the second body is 0°, the protrusion 132 is located within the groove 142, and the first positioning member 13 and the second positioning member 14 may have a first resistance torque opposite to the first direction C; when the angle between the first body and the second body changes from 0° along the first direction C to a first angle, the protrusion 132 is located outside the groove 142, and the first positioning member 13 and the second positioning member 14 may have a second resistance torque opposite to the first direction C, and the first resistance torque may be greater than the second resistance torque. This results in a larger first resistance torque, which reduces the probability of the first positioning member 13 accidentally rotating relative to the second positioning member 14. It also reduces the probability of the first positioning member 13 accidentally rotating relative to the second positioning member 14 due to insufficient resistance torque caused by manufacturing errors, assembly errors, or component damage when the angle between the first body and the second body is 0°, thus ensuring that the first body and the second body can fit tightly together and reducing the probability of the first body and the second body having an "open smile".

[0070] The protrusion 132 being located within the groove 142 means that the top of the protrusion 132 is located within the groove 142. This can mean that the top of the protrusion 132 is in contact with the bottom of the groove 1421, or that the top of the protrusion 132 is located between the opening and the bottom of the groove 1421.

[0071] The first resistance torque refers to the resistance torque that needs to be overcome to make the first end face 131 and the second end face 141 rotate relative to each other along the first direction C when the included angle between the first body and the second body is 0°.

[0072] In some embodiments, such as Figure 4 and Figure 5As shown, the protrusion 132 may have a first side surface 1323 and a second side surface 1324 that are circumferentially opposite each other along the spindle 11. The first side surface 1323 is located on one side of the second side surface 1324 along the first direction C, and the first side surface 1323 is an inclined surface. The groove 142 may have a third side surface 1422 and a fourth side surface 1423 that are circumferentially opposite each other along the spindle 11. The third side surface 1422 is located on one side of the fourth side surface 1423 along the first direction C, and the third side surface 1422 is an inclined surface. When the included angle between the first body and the second body is 0°, the first side surface 1323 and the third side surface 1422 abut against each other.

[0073] The second resistance torque refers to the resistance torque that needs to be overcome to make the first end face 131 and the second end face 141 rotate relative to each other along the first direction C when the included angle between the first body and the second body is the first angle.

[0074] The first angle refers to the smallest angle between the first body and the second body when all protrusions 132 are outside the groove 142.

[0075] Optionally, the first angle can be 4°, 5°, 6°, 7°, 8°, 9°, 10°, 11°, 12°, 13°, 14°, 15°, 20°, etc., and of course, the first angle can also be other values.

[0076] In some embodiments, during the process of the included angle between the first body and the second body changing from the first angle along the first direction C to 180°, at least two protrusions 132 can abut against the second end face 141.

[0077] In some embodiments, such as Figures 5 to 13 As shown, taking three protrusions 132 as an example, during the process of the included angle between the first body and the second body rotating from the first angle along the first direction C to 180°, two protrusions 132 can abut against the second end face 141, or three protrusions 132 can abut against the second end face 141. Furthermore, during the process of the included angle between the first body and the second body rotating from the first angle along the first direction C to 180°, two protrusions 132 can abut against the second end face 141 within a portion of the included angle between the first angle and 180°, and three protrusions 132 can abut against the second end face 141 within another portion of the included angle between the first angle and 180°. Further, refer to... Figures 6 to 9 During the process of the included angle between the first body and the second body changing from the first angle to the second angle, the three protrusions 132 abut against the second end face 141, as shown in the reference. Figures 9 to 12 The angle between the first body and the second body can be within the range of a second angle to a third angle, and the two protrusions 132 abut against the second end face 141, as shown in the reference. Figure 12 and Figure 13 The angle between the first body and the second body can be in the range of a third angle to 180°, and the three protrusions 132 abut against the second end face 141.

[0078] In a specific embodiment, such as Figure 5 As shown, along the first direction C, when the angle between the first body and the second body is 0°, the protrusion 132 can be located within the corresponding groove 142. The size and shape of the protrusion 132 can be adapted to the size and shape of the corresponding groove 142. After the protrusion 132 rotates out of the groove 142, the angle between the first body and the second body continues to increase, as shown... Figures 9 to 11 As shown, when the protrusion 132 rotates to the groove 142 corresponding to the other protrusion 132, in the same projection plane projected along the X axis of the mandrel, along the circumference of the mandrel 11, at least the projection ends of the top 1322 of the protrusion 132 extend beyond the projection ends of the groove opening of the groove 142. Thus, when the protrusion 132 rotates to the groove 142 corresponding to the other protrusion 132, at least a portion of the protrusion 132 can abut against the second end face 141.

[0079] As the angle between the first body and the second body rotates from the first angle along the first direction C to 180°, at least two protrusions 132 abut against the second end face 141. Compared with the point where the first positioning member 13 and / or the second positioning member 14 abut against each other, the force on the first positioning member 13 and / or the second positioning member 14 along the circumferential direction of the spindle 11 is more uniform. The probability of the first positioning member 13 and / or the second positioning member 14 shifting along the spindle axial direction X is smaller. This further reduces the change in the compression of the target member 12 caused by the first positioning member 13 and / or the second positioning member 14 shifting along the spindle axial direction X, thereby causing a change in the normal pressure between the first positioning member 13 and the second positioning member 14, and a change in the rotational resistance between the first positioning member 13 and the second positioning member 14. This further reduces the probability of the stability of the angle between the first body and the second body being maintained at a certain angle, further reducing the probability of the components in the connecting device shifting or misaligning, and improving the stability of the angle between the first body and the second body being maintained at a certain value.

[0080] In some embodiments, such as Figures 6 to 9 As shown, during the process of the included angle between the first body and the second body changing from the first angle along the first direction C to the second angle, at least three protrusions 132 abut against the second end face 141.

[0081] The second angle refers to the critical angle between all protrusions 132 abutting against the second end face 141 and a portion of protrusions 132 abutting against the second end face 141 after the protrusions 132 have moved outside the groove 142.

[0082] Taking three protrusions 132 as an example, the second angle refers to the critical angle where all three protrusions 132 are in contact with the second end face 141, and two protrusions 132 are in contact with the second end face 141, while the other protrusion 132 is spaced apart from the second positioning member 14.

[0083] Taking four protrusions 132 as an example, the second angle refers to the critical angle at which all four protrusions 132 are in contact with the second end face 141, and three protrusions 132 are in contact with the second end face 141, while the other protrusion 132 is spaced apart from the second positioning member 14. Alternatively, the second angle refers to the critical angle at which all four protrusions 132 are in contact with the second end face 141, and two protrusions 132 are in contact with the second end face 141, while the other two protrusions 132 are spaced apart from the second positioning member 14.

[0084] Optionally, the second angle can be 90°, 100°, 110° or 120°, etc. Of course, the second angle can also be other values.

[0085] In some embodiments, the number of protrusions 132 can be three. During the process of the included angle between the first body and the second body changing from the first angle along the first direction C to the second angle, the three protrusions 132 abut against the second end face 141.

[0086] In some embodiments, the number of protrusions 132 can be four. During the process of the included angle between the first body and the second body changing from the first angle along the first direction C to the second angle, the four protrusions 132 abut against the second end face 141.

[0087] When the included angle between the first body and the second body is small, due to the influence of the weight of the first body or the second body itself, the resistance torque required to maintain the angle between the first body and the second body at a certain value is large. Compared with the first positioning member 13 and the second positioning member 14 having two support positions, the first positioning member 13 and the second positioning member 14 are subjected to more uniform force along the circumference of the spindle 11, and the probability of the first positioning member 13 and / or the second positioning member 14 shifting along the spindle axis X is smaller. When the included angle between the first body and the second body is small, the rotational resistance between the first positioning member 13 and the second positioning member 14 is more stable. Compared with the first positioning member 13 and the second positioning member 14 having two support positions, where the probability of the first positioning member 13 and / or the second positioning member 14 shifting along the spindle axis X is larger, the stability of the first body and the second body maintaining a certain angle is better when there are three support positions between the first positioning member 13 and the second positioning member 14.

[0088] In some embodiments, such as Figures 9 to 12As shown, during the process of the included angle between the first body and the second body changing from the second angle along the first direction C to the third angle, at least one protrusion 132 is located at the groove 142 corresponding to another protrusion 132, and at least two protrusions 132 abut against the second end face 141.

[0089] The third angle refers to the critical angle between the partial protrusion 132 abutting against the second end face 141 and the entire protrusion 132 abutting against the second end face 141 after the partial protrusion 132 is spaced apart from the second positioning member.

[0090] Taking three protrusions 132 as an example, the third angle refers to the critical angle at which two protrusions 132 are in contact with the second end face 141, and the other protrusion 132 is spaced apart from the second positioning member 14, thus becoming three protrusions 132 in contact with the second end face 141.

[0091] Taking four protrusions 132 as an example, the third angle refers to the critical angle at which three protrusions 132 are in contact with the second end face 141 and another protrusion 132 is spaced apart from the second positioning member 14, thus becoming the critical angle at which four protrusions 132 are in contact with the second end face 141; or the third angle refers to the critical angle at which two protrusions 132 are in contact with the second end face 141 and another two protrusions 132 are spaced apart from the second positioning member 14, thus becoming the critical angle at which four protrusions 132 are in contact with the second end face 141.

[0092] Optionally, the third angle can be 160°, 170° or 175°, etc. Of course, the third angle can also be other values.

[0093] In some embodiments, the number of protrusions 132 can be three. During the process of the included angle between the first body and the second body changing from the second angle along the first direction C to the third angle, two protrusions 132 abut against the second end face 141.

[0094] In some embodiments, the number of protrusions 132 can be four. During the process of the included angle between the first body and the second body changing from the second angle along the first direction C to the third angle, three protrusions 132 can abut against the second end face 141, or two protrusions 132 can abut against the second end face 141.

[0095] As the angle between the first body and the second body changes from the second angle along the first direction C to the third angle, at least two protrusions 132 abut against the second end face 141. Therefore, as the angle between the first body and the second body increases, there are at least two support points between the first positioning member 13 and the second positioning member 14. Compared with the case where there is only one support point between the first positioning member 13 and the second positioning member 14 as the angle between the first body and the second body increases, the force on the first positioning member 13 and the second positioning member 14 is more uniform along the circumference of the spindle 11. The probability of the first positioning member 13 and / or the second positioning member 14 shifting along the spindle axis X is smaller, and the stability of the first body and the second body at a certain angle is better.

[0096] In some embodiments, such as Figures 2 to 4 As shown, the protrusion 132 is fan-shaped, and the plurality of protrusions 132 include a first protrusion 132a, a second protrusion 132b, and a third protrusion 132c arranged sequentially along the first direction C; the groove 142 is fan-shaped, and the plurality of grooves 142 include a first groove 142a, a second groove 142b, and a third groove 142c arranged sequentially along the first direction C. The curvature of the convex top of the second protrusion 132b is greater than the curvature of the groove opening of the third groove 142c, and the curvature of the convex top of the third protrusion 132c is greater than the curvature of the groove opening of the first groove 142a.

[0097] In some embodiments, such as Figure 5 As shown, when the included angle between the first body and the second body is 0°, the first protrusion 132a corresponds to the first groove 142a, and the first protrusion 132a is located in the first groove 142a; the second protrusion 132b corresponds to the second groove 142b, and the second protrusion 132b is located in the second groove 142b; the third protrusion 132c corresponds to the third groove 142c, and the third protrusion 132c is located in the third groove 142c.

[0098] In some embodiments, such as Figure 5 and Figure 6 As shown, when the included angle between the first body and the second body changes from 0° to the first angle, the first protrusion 132a moves out of the first groove 142a and abuts against the second end face 141; the second protrusion 132b moves out of the second groove 142b and abuts against the second end face 141; the third protrusion 132c moves out of the third groove 142c and abuts against the second end face 141.

[0099] In some embodiments, such as Figures 6 to 9As shown, when the included angle between the first body and the second body is within the range of the first angle to the second angle, the first protrusion 132a, the second protrusion 132b and the third protrusion 132c all abut against the second end face 141.

[0100] In some embodiments, such as Figure 9 As shown, when the included angle between the first body and the second body is the second angle and continues to increase, the first protrusion 132a rotates to the position of the second groove 142b, and the top of the first protrusion 132a 1322 rotates to the position of the groove opening of the second groove 142b. Thus, the first protrusion 132a and the second positioning member 14 are spaced apart, but the second protrusion 132b abuts against the second end face 141, and the third protrusion 132c abuts against the second end face 141.

[0101] In some embodiments, such as Figures 9 to 12 As shown, when the included angle between the first body and the second body is within the range of the second angle to the third angle, the top 1322 of the first protrusion 132a is located at the opening of the second groove 142b. The first protrusion 132a is spaced apart from the second positioning member 14, but the second protrusion 132b abuts against the second end face 141, and the third protrusion 132c abuts against the second end face 141.

[0102] In some embodiments, such as Figure 12 As shown, when the included angle between the first body and the second body is the third angle and continues to increase, the top 1322 of the first protrusion 132a rotates out of the slot of the second groove 142b, the first protrusion 132a abuts against the second end face 141, the second protrusion 132b abuts against the second end face 141, and the third protrusion 132c abuts against the second end face 141.

[0103] In some embodiments, such as Figure 4 and Figure 9 As shown, along the circumference of the mandrel 11, the size of the top 1322 of the second protrusion 132b can be larger than the size of the opening of the third groove 142c, and the size of the top 1322 of the third protrusion 132c can be larger than the size of the opening of the first groove 142a.

[0104] In some embodiments, along the circumferential direction of the mandrel 11, the size of the top 1322 of the third protrusion 132c can be larger than the size of the top 1322 of the first protrusion 132a and smaller than the size of the top 1322 of the second protrusion 132b.

[0105] In some embodiments, the protrusion 132 is arc-shaped, and the arc of the third protrusion 132c can be greater than the arc of the first protrusion 132a and less than the arc of the second protrusion 132b.

[0106] In some embodiments, such as Figure 4 and Figure 9 As shown, along the circumference of the mandrel 11, the size of the opening of the third groove 142c can be larger than the size of the opening of the first groove 142a and smaller than the size of the opening of the second groove 142b.

[0107] In some embodiments, the groove 142 is arc-shaped, and the arc of the third groove 142c can be greater than the arc of the first groove 142a and less than the arc of the second groove 142b.

[0108] In one specific embodiment, the curvatures of the first protrusion 132a, the second protrusion 132b, and the third protrusion 132c can be 40°, 80°, and 60°, respectively. Of course, the above is only an example, and the curvatures of the first protrusion 132a, the second protrusion 132b, and the third protrusion 132c can also be other values.

[0109] In one specific embodiment, the curvatures of the first groove 142a, the second groove 142b, and the third groove 142c can be 40°, 80°, and 60°, respectively. Of course, the above is only an example, and the curvatures of the first groove 142a, the second groove 142b, and the third groove 142c can also be other values.

[0110] Since the curvature of the second protrusion 132b is greater than that of the third groove 142c, and the curvature of the third protrusion 132c is greater than that of the first groove 142a, at least two protrusions 132 abut against the second end face 141 during the process of the included angle between the first body and the second body changing from the first angle along the first direction C to 180°, the structure is simple and easy to manufacture.

[0111] It is understood that the plurality of protrusions 132 may also include a fourth protrusion, and the plurality of grooves 142 may also include a fourth groove. When the included angle between the first body and the second body is 0°, the fourth protrusion corresponds to the fourth groove, and the fourth protrusion is located in the fourth groove.

[0112] In one specific embodiment, the curvatures of the first protrusion 132a, the second protrusion 132b, and the third protrusion 132c can be 15°, 75°, 55°, and 35°, respectively. Of course, the above is only an example, and the curvatures of the first protrusion 132a, the second protrusion 132b, the third protrusion 132c, and the fourth protrusion 132 can also be other values.

[0113] In one specific embodiment, the curvatures of the first groove 142a, the second groove 142b, and the third groove 142c can be 15°, 75°, 55°, and 35°, respectively. Of course, the above is only an example, and the curvatures of the first groove 142a, the second groove 142b, the third groove 142c, and the fourth protrusion 132 can also be other values.

[0114] In some embodiments, such as Figure 12 and Figure 13 As shown, during the process of the angle between the first body and the second body changing from the third angle along the first direction C to 180°, at least three protrusions 132 abut against the second end face 141.

[0115] In some embodiments, the number of protrusions 132 can be three. During the process of the included angle between the first body and the second body changing from the third angle along the first direction C to 180°, the three protrusions 132 can abut against the second end face 141.

[0116] In some embodiments, the number of protrusions 132 can be four. During the process of the included angle between the first body and the second body changing from the third angle along the first direction C to 180°, the four protrusions 132 can abut against the second end face 141.

[0117] As the angle between the first body and the second body rotates from the third angle along the first direction C to 180°, at least three protrusions 132 abut against the second end face 141. Therefore, the angle between the first body and the second body is larger, and there are at least three support points between the first positioning member 13 and the second positioning member 14. The force on the first positioning member 13 and the second positioning member 14 along the circumference of the spindle 11 is more uniform, the probability of the first positioning member 13 and / or the second positioning member 14 shifting along the spindle axis X is smaller, and the stability of the first body and the second body at a certain angle is better.

[0118] In some embodiments, such as Figure 11 As shown, the portion where each protrusion 132 abuts against the second end face 141 is called an abutment portion. Multiple abutment portions include a first abutment portion 1321a and a second abutment portion 1321b. In the same circle, along the circumferential direction of the mandrel 11, the first abutment portion 1321a is located away from the end of the second abutment portion 1321b (e.g., ...). Figure 11 The left end shown) and the end of the second abutment 1321b that is opposite to the first abutment 1321a (e.g., the left end shown) are opposite to the first abutment 1321a. Figure 11 The ratio of the distance L1 between the right end shown and the right end to the perimeter of the first end face 131 is greater than or equal to 1 / 3.

[0119] The portion of each protrusion 132 that abuts against the second end face 141 is called an abutment portion. When the portion of one protrusion 132 that abuts against the second end face 141 consists of two spaced-apart parts, these two spaced-apart parts can be collectively referred to as one abutment portion. (Refer to...) Figure 9 The contact situation between the third protrusion 132c and the second end face.

[0120] In some embodiments, the number of abutting portions can be multiple. In the same circle, along the circumference of the mandrel 11, the ratio of the distance L1 between the end of one abutting portion and the end of the other abutting portion that is away from the abutting portion to the circumference of the first end face 131 can be greater than or equal to 1 / 3.

[0121] Optionally, in the same circle, the ratio of the distance L1 to the circumference of the first end face 131 can be 1 / 3, 0.3, 0.35, 0.4, etc. Of course, the ratio of the distance L1 to the circumference of the first end face 131 can also be other values.

[0122] Because the first abutting part 1321a is away from the end of the second abutting part 1321b (for example) Figure 11 The distance between the left end shown and the end of the second abutment 1321b that is away from the first abutment 1321a is relatively large. With two supports between the first positioning member 13 and the second positioning member 14, the distance between the two supports is relatively large along the circumference of the spindle 11. The force on the first positioning member 13 and the second positioning member 14 along the circumference of the spindle 11 is relatively uniform. The probability of the first positioning member 13 and / or the second positioning member 14 shifting along the spindle axis X is relatively small, which improves the stability of the first body and the second body at a certain angle.

[0123] In some embodiments, in the same circle, along the circumference of the mandrel 11, the ratio of the distance between the midpoints of adjacent protrusions 132 to the circumference of the first end face 131 is greater than or equal to 0.25.

[0124] Optionally, in the same circle, along the circumference of the mandrel 11, the ratio of the distance between the midpoints of adjacent protrusions 132 to the circumference of the first end face 131 can be 0.25, 0.27, 0.3, 0.33, etc. Of course, the ratio of the distance between the midpoints of adjacent protrusions 132 to the circumference of the first end face 131 can be other values.

[0125] In some embodiments, the plurality of protrusions 132 may be distributed at equal intervals along the circumference of the mandrel 11.

[0126] In some embodiments, the midpoints of a plurality of protrusions 132 may be evenly distributed along the circumference of the mandrel 11.

[0127] In some embodiments, in the same circle, along the circumference of the mandrel 11, the ratio of the distance between the midpoints of adjacent protrusions 132 to the circumference of the first end face 131 can be equal to 1 / 3.

[0128] Since the ratio of the distance between the midpoints of adjacent protrusions 132 to the circumference of the first end face 131 is greater than or equal to 0.25 along the circumference of the mandrel 11, the distance between adjacent protrusions 132 is relatively large. When the protrusion 132 moves outside the groove 142, the contact points between the protrusion 132 and the second end face 141 are relatively dispersed, and the support points between the first positioning member 13 and the second positioning member 14 are relatively dispersed. The force on the first positioning member 13 and the second positioning member 14 along the circumference of the mandrel 11 is more uniform, and the probability of the first positioning member 13 and / or the second positioning member 14 shifting along the axial direction of the mandrel is small, which improves the stability of the first body and the second body at a certain angle.

[0129] In some embodiments, on the same first end face 131, the outer edges of all protrusions 132 radially away from the mandrel 11 lie on the same circle.

[0130] In some embodiments, the outer edges of all protrusions 132 radially away from the mandrel 11 and the outer edge of the first end face 131 may be located on the same circle.

[0131] In some embodiments, the outer edges of all protrusions 132 along the radial direction of the mandrel 11 near the outer edge of the mandrel 11 may be located on the same circle. Further, the outer edges of all protrusions 132 along the radial direction of the mandrel 11 near the outer edge of the mandrel 11 and the inner edge of the first end face 131 may be located on the same circle. Even further, all protrusions 132 may contact the mandrel 11.

[0132] In some embodiments, the outer edges of all grooves 142 radially away from the mandrel 11 can be located on the same circle. Furthermore, the outer edges of all grooves 142 radially away from the mandrel 11 and the outer edge of the second end face 141 can be located on the same circle.

[0133] In some embodiments, the outer edges of all grooves 142 along the radial direction of the mandrel 11 near the outer edge of the mandrel 11 may be located on the same circle. Furthermore, the outer edges of all grooves 142 along the radial direction of the mandrel 11 near the outer edge of the mandrel 11 and the inner edge of the second end face 141 may be located on the same circle.

[0134] Since all the protrusions 132 are located on the same circle along the radial direction away from the mandrel 11, compared with the first end face 131 having protrusions 132 that are both close to the mandrel 11 and far away from the mandrel 11, the radial dimension of the first positioning member 13 can be smaller, solving the problem of the large radial dimension of the first positioning member 13, making the size of the connecting device smaller, and thus making the overall size of the first body, the second body and the connecting device smaller along the thickness direction of the first body.

[0135] It is understandable that all the protrusions 132 can be located on different circles along the radial direction of the mandrel 11 away from the outer edge of the mandrel 11.

[0136] A second aspect of this application provides an electronic device comprising a first body, a second body, and a connecting device. The connecting device includes a spindle 11, a target member 12 sleeved on the spindle 11, a first positioning member 13 sleeved on the spindle 11, and a second positioning member 14 sleeved on the spindle 11. The target member 12 provides pressure to the second positioning member 14 toward the first positioning member 13. The first end face 131 of the first positioning member 13 facing the second positioning member 14 has at least three protrusions 132 spaced apart from each other. The end face of the second positioning member 14 facing the first positioning member 13 is the first end face 132 of the first positioning member 13. The second end face 141 and the second positioning member 14 are formed with a groove 142 recessed in a direction opposite to the first end face 131 relative to the second end face 141. The number of grooves 142 is at least three, and the at least three grooves 142 are spaced apart from each other. The first positioning member 13 is used to connect with the first body, and the second positioning member 14 is used to connect with the second body. The first positioning member 13 can rotate relative to the second positioning member 14 in a first direction C. When the included angle between the first body and the second body is the target included angle, at least three protrusions 132 abut against the second end face 141.

[0137] Since the electronic device includes the connection device provided in the first aspect of this application, it is possible to improve the stability of maintaining the included angle between the first body and the second body in the electronic device at a certain value.

[0138] The above embodiments are merely illustrative of the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and all should be covered within the scope of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of this application.

Claims

1. A connecting device, comprising: mandrel; The mandrel comprises a target component, a first positioning component, and a second positioning component. The target component applies pressure to the second positioning component toward the first positioning component. The first positioning component has at least three spaced-apart protrusions on its first end face facing the second positioning component. The second positioning component has a second end face facing the first positioning component. The second positioning component has at least three recessed grooves that are spaced apart from each other. Wherein, the first positioning member is used to connect with the first body, the second positioning member is used to connect with the second body, the first positioning member is able to rotate relative to the second positioning member in a first direction, and when the included angle between the first body and the second body is the target included angle, at least three of the protrusions abut against the second end face.

2. The connecting device according to claim 1, When the angle between the first body and the second body changes from 0° to the first angle along the first direction, the protrusion moves from inside the corresponding groove to outside the groove; During the process of the angle between the first body and the second body changing from the first angle to 180° along the first direction, at least two of the protrusions abut against the second end face.

3. The connecting device according to claim 2, During the process of the angle between the first body and the second body changing from the first angle to the second angle along the first direction, at least three of the protrusions abut against the second end face.

4. The connecting device according to claim 3, During the process of the included angle between the first body and the second body changing from the second angle to the third angle along the first direction, at least one of the protrusions is located in the groove corresponding to the other protrusion, and at least two of the protrusions abut against the second end face.

5. The connecting device according to claim 4, The protrusion is fan-shaped, and the plurality of protrusions include a first protrusion, a second protrusion, and a third protrusion arranged sequentially along the first direction; The groove is fan-shaped, and the plurality of grooves include a first groove, a second groove, and a third groove arranged sequentially along the first direction. The curvature of the convex top of the second protrusion is greater than the curvature of the groove opening of the third groove, and the curvature of the convex top of the third protrusion is greater than the curvature of the groove opening of the first groove.

6. The connecting device according to claim 4, During the process of the angle between the first body and the second body changing from the third angle to 180° along the first direction, at least three of the protrusions abut against the second end face.

7. The connecting device according to any one of claims 1 to 6, The portion of each protrusion that abuts against the second end face is called an abutment portion. The plurality of abutment portions include a first abutment portion and a second abutment portion. In the same circle, along the circumference of the mandrel, the ratio of the distance between the end of the first abutment portion away from the second abutment portion and the end of the second abutment portion away from the first abutment portion to the circumference of the first end face is greater than or equal to 1 / 3.

8. The connecting device according to any one of claims 1 to 6, In the same circle, along the circumference of the mandrel, the ratio of the distance between the midpoints of adjacent protrusions to the circumference of the first end face is greater than or equal to 0.

25.

9. The connecting device according to any one of claims 1 to 6, On the same first end face, all the protrusions are located on the same circle along the outer edge of the mandrel, radially away from the mandrel.

10. An electronic device comprising a first body, a second body, and a connecting device, the connecting device comprising: mandrel; The mandrel comprises a target component, a first positioning component, and a second positioning component. The target component applies pressure to the second positioning component toward the first positioning component. The first positioning component has at least three spaced-apart protrusions on its first end face facing the second positioning component. The second positioning component has a second end face facing the first positioning component. The second positioning component has at least three recessed grooves that are spaced apart from each other. Wherein, the first positioning member is used to connect with the first body, the second positioning member is used to connect with the second body, the first positioning member is able to rotate relative to the second positioning member in a first direction, and when the included angle between the first body and the second body is the target included angle, at least three of the protrusions abut against the second end face.

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