CN115638181A - Hinge mechanism and electronic device - Google Patents

Abstract

The application discloses a hinge mechanism and electronic equipment, which belong to the field of communication equipment, wherein the hinge mechanism comprises an installation seat and a plurality of rotating assemblies, each rotating assembly is positioned on the same side of the installation seat under the condition that the hinge mechanism is in a folded state, and at least one rotating assembly is arranged on two opposite sides of the installation seat under the condition that the hinge mechanism is in an unfolded state; each rotating assembly comprises a rotating arm and a synchronizing arm which are matched with each other, the rotating arm comprises a rotating body and a first limiting part which are fixedly connected, the rotating body is rotatably connected with the mounting seat, the synchronizing arm comprises a synchronizing body and a second limiting part which are fixedly connected, and the synchronizing body is in transmission connection with the other synchronizing arm; one of the first limiting part and the second limiting part is provided with a containing groove, the other one comprises a connecting shaft and a limiting part, the connecting shaft is inserted into the containing groove along the rotating axial direction of the rotating body, the limiting part is fixedly connected with the connecting shaft, and in the rotating axial direction of the rotating body, the limiting part is in limiting fit with the containing groove.

Description

Hinge mechanism and electronic device

Technical Field

The application belongs to the technical field of communication equipment, and in particular relates to a hinge mechanism and electronic equipment.

Background

In order to achieve both portability and a large display area, foldable electronic devices are becoming more popular among consumers. As shown in fig. 1 and 2, in a folding electronic apparatus, a rotating arm having a virtual pivot is generally provided to connect a housing 1 of the folding electronic apparatus and a base in a hinge mechanism 2, so that adjacent housings 1 can be relatively rotated by the rotating arm on both sides of a mount, and the electronic apparatus is switched between a folded state and an unfolded state. Meanwhile, in order to ensure that the rotation angles of the two adjacent shells 1 are equal to the rotation angles of the mounting seats in the hinge mechanism 2, a synchronization assembly is usually arranged in the folding electronic device and comprises two synchronization arms which correspond to each other and are in transmission connection, the two synchronization arms are respectively matched with the two rotation arms, so that in the process that any rotation arm rotates along with the shell 1 relative to the mounting seat, the corresponding synchronization arms can be driven to rotate relative to the mounting seats together, due to the transmission connection between the two synchronization arms which correspond to each other, and then one synchronization arm is stressed, and when the relative mounting seat rotates, the other synchronization arm can be driven to rotate relative to the mounting seat, and the two adjacent shells 1 have synchronous rotation capacity.

However, in the folding electronic device, the synchronization arm and the rotation arm are connected in a shaft hole matching manner, as shown in fig. 3, so that the synchronization arm and the rotation arm have a relative movement capability in a rotation axis direction, which may cause a situation that two housings 1 connected by a hinge mechanism 2 in the folding electronic device are misaligned due to an axial movement, on one hand, the housings are easily damaged, and on the other hand, user experience of the product is poor.

Disclosure of Invention

The embodiment of the application aims to provide a hinge mechanism and electronic equipment, so that the problem that the electronic equipment display screen is damaged and the user experience of a product is poor due to the fact that dislocation is easily generated between two shells connected through the hinge mechanism in the conventional electronic equipment due to axial movement is solved.

In a first aspect, an embodiment of the present application discloses a hinge mechanism, which includes an installation seat and a plurality of rotating assemblies, wherein the hinge mechanism has a folded state and an unfolded state, each rotating assembly is located on the same side of the installation seat when the hinge mechanism is in the folded state, and at least one rotating assembly is arranged on two opposite sides of the installation seat when the hinge mechanism is in the unfolded state;

each rotating assembly comprises a rotating arm and a synchronizing arm which are matched with each other, the rotating arm comprises a rotating body and a first limiting part which are fixedly connected, the rotating body is rotatably connected with the mounting seat, the synchronizing arm comprises a synchronizing body and a second limiting part which are fixedly connected, and the synchronizing body is in transmission connection with the other synchronizing arm;

one of the first limiting part and the second limiting part is provided with a containing groove, the other one of the first limiting part and the second limiting part comprises a connecting shaft and a limiting part, the connecting shaft is inserted into the containing groove along the rotating axial direction of the rotating body, the limiting part is fixedly connected with the connecting shaft, the rotating shaft of the rotating body is upward, and the limiting part is in limiting fit with the containing groove.

In a second aspect, an embodiment of the present application discloses an electronic device, which includes two housings and the above hinge mechanism, any of the housings all with the hinge mechanism the rotating arm is fixedly connected, so that two between the housings are passed through the hinge mechanism to rotate relatively.

The embodiment of the application discloses the hinge mechanism, it includes the mount pad and a plurality of and the equal normal running fit's of mount pad rotating assembly, rotating assembly includes rotor arm and synchronous arm, and rotor arm and synchronous arm mutually support, and form the linkage relation to under the relative mount pad rotation's of one of the two circumstances, another can also rotate relative to the mount pad thereupon. The rotor arm includes rotating body and first spacing portion, and the rotating body is the part that is used for connecting mount pad and casing in the rotor arm, and synchronous arm includes synchronous body and the spacing portion of second, and synchronous body is used for providing the device of synchronization action in the synchronous arm, guarantees to form synchronous rotation state through the transmission fit relation between the relative complex synchronous arm. One of the first spacing portion and the second spacing portion is provided with a containing groove, the other one comprises a connecting shaft and a limiting part, the connecting shaft can be inserted into the containing groove along the rotating axial direction of the rotating body, the limiting part is fixedly connected with the connecting shaft, the rotating body is rotated in the rotating axial direction, the limiting part can be in spacing fit with the containing groove, and further the rotating arm and the synchronizing arm can form spacing relation in the rotating axial direction, the rotating arm and the synchronizing arm are prevented from moving relative to each other along the rotating axial direction, axial dislocation basically cannot be generated between two adjacent shells connected through the hinge mechanism in the electronic equipment, and further the display screen of the electronic equipment is prevented from being damaged, and the user experience of a product is improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 to 3 are schematic structural diagrams of a folding electronic device in different directions in the prior art;

FIG. 4 is a schematic structural view of the hinge mechanism disclosed in the embodiments of the present application in a folded state;

FIG. 5 is an exploded view of a part of the structure in the hinge mechanism disclosed in the embodiment of the present application;

FIG. 6 is a schematic structural view of a swivel arm in a hinge mechanism disclosed in an embodiment of the present application;

FIG. 7 is a schematic view of a structure of a synchronization arm in a hinge mechanism disclosed in an embodiment of the present application;

FIG. 8 is an assembled view of the swivel arm and the synchronization arm in the hinge mechanism disclosed in the embodiments of the present application;

FIG. 9 is an enlarged schematic view of detail I of FIG. 8;

FIG. 10 is a schematic, partially cross-sectional view of a swivel arm in a hinge mechanism as disclosed in an embodiment of the present application;

FIG. 11 is a schematic size view of a stop on the synchronization arm in the hinge mechanism disclosed in the embodiments of the present application;

FIG. 12 is another schematic view of the structure of the synchronization arm in the hinge mechanism disclosed in the embodiments of the present application;

fig. 13 is a schematic view of another structure of the synchronization arm in the hinge mechanism according to the embodiment of the present application.

Description of the reference numerals:

1-shell, 2-hinge mechanism,

10-rotating arm, 110-rotating body, 120-accommodating groove, 130-limiting groove,

20-synchronous arm, 210-synchronous body, 220-limit piece, 230-connecting shaft,

31-mounting seat, 32-fixed middle plate, 33-gear, 34-rotating shaft, 35-elastic reset piece, 36-gasket, 37-butting piece, 38-positioning piece,

41-support plate, 42-floating plate.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that embodiments of the application may be practiced in sequences other than those illustrated or described herein, and that the terms "first," "second," and the like are generally used herein in a generic sense and do not limit the number of terms, e.g., the first term can be one or more than one. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/", and generally means that the former and latter related objects are in an "or" relationship.

As shown in fig. 4 to 13, an embodiment of the present application discloses a hinge mechanism and an electronic device, where the hinge mechanism can be applied to a foldable electronic device, and two adjacent housings in the electronic device are connected by the hinge mechanism, so that the two adjacent housings have a relative rotation capability, and further the electronic device performs an unfolding operation and a folding operation, so as to achieve both a large display area and a good portability.

The hinge mechanism comprises a mounting seat 31 and a plurality of rotating components, wherein the mounting seat 31 can be used as a mounting base component of the hinge mechanism, so that other components in the hinge mechanism can be directly or indirectly mounted on the mounting seat 31, and the hinge mechanism forms an integral structure. The mounting seat 31 may be formed of a relatively strong material such as metal, and the number of the mounting seats 31 may be one or more, and the specific shape and structure of the mounting seat 31 may be selected according to actual parameters of other devices in the hinge mechanism, which is not limited herein. Of course, the hinge mechanism may further include a support plate 41 and a floating plate 42, and the support plate 41 and the floating plate 42 may provide a support function for the display screen of the electronic device. The two sides of the mounting seat 31 may be respectively connected with a supporting plate 41, and the supporting plate 41 may be connected with the rotating arm 10, so as to drive the supporting plate 41 to rotate relative to the mounting seat 31 under the action of the rotating arm 10. The floating plate 42 may be disposed corresponding to the mounting seat 31, and may have a device for changing displacement, such as a spring, so that the floating plate 42 may move relative to the mounting seat 31 to selectively support the display screen or avoid the display screen, thereby prolonging the service life of the display screen.

As described above, the hinge mechanism can enable the electronic device to have folding and unfolding capabilities, and for this reason, the hinge mechanism itself needs to have a folding state and an unfolding state, and in the process of switching between the folding state and the unfolding state, the devices in the hinge mechanism also generate relative motion, and more specifically, with the mounting base 31 as a reference system, the rotating components in the hinge mechanism all generate rotation motion relative to the mounting base 31, so as to change the relative position of the housing connected with the rotating components in the electronic device, and enable the electronic device to also switch between the unfolding state and the folding state.

When the hinge mechanism is in a folded state, all the rotating components are positioned on the same side of the mounting seat 31; under the condition that the hinge mechanism is in the unfolding state, at least one rotating assembly is arranged on two opposite sides of the mounting seat 31. In detail, when the hinge mechanism is applied to an electronic device, the rotating component is a device in the hinge mechanism for connecting with a housing of the electronic device, and the position of the rotating component relative to the mounting seat 31 can represent the position of the housing in the electronic device relative to the mounting seat 31, for this reason, when the hinge mechanism is in a folded state, in order to ensure that the electronic device can also be in the folded state, it is necessary to fold the housings of the electronic device in half for stacking, in this case, both the housings connected by the hinge mechanism are located on the same side of the mounting seat 31, accordingly, the rotating components respectively connected with both the housings are also located on the same side of the mounting seat 31 in the hinge mechanism, and the aforementioned side of the mounting seat 31 can be referred to as a first side.

When the hinge mechanism is in the unfolded state, in order to ensure that the electronic device can also be in the unfolded state, the housing of the electronic device needs to be moved in a direction away from each other, so that the two folded devices are unfolded and laid flat, and the electronic device can be in the unfolded state. In this case, the rotating components respectively connected to the two housings rotate along with the two housings and are respectively located on two opposite sides of the mounting seat 31, and the two opposite sides of the mounting seat 31 can be respectively referred to as a second side and a third side, and the second side and the third side are respectively located on two opposite sides of the first side. Moreover, in the hinge mechanism, the number of the rotating assemblies for connecting any shell is at least one, and then, under the condition that the hinge mechanism is in the unfolding state, at least one rotating assembly is arranged on two opposite sides of the mounting seat 31. Specifically, the number of the rotating assemblies connected with any one housing may be the same, and all are one or more, which is not limited herein.

Further, each rotating assembly comprises a rotating arm 10 and a synchronizing arm 20, and the rotating arm 10 and the synchronizing arm 20 are matched with each other, so that when one of the rotating arm 10 and the synchronizing arm 20 rotates relative to the mounting seat 31, the other one can be driven to rotate relative to the mounting seat 31, and the rotating arm 10 and the synchronizing arm 20 in the same rotating assembly are matched with each other, that is, form a linkage relationship. In assembling the hinge mechanism and the housing of the electronic device, the swivel arm 10 of each swivel assembly is used for connecting with the housing, and the synchronization arm 20 is a component for connecting the swivel assemblies with each other.

In the rotating assembly, the rotating arm 10 includes a rotating body 110 and a first limiting portion, the rotating body 110 is fixedly connected with the first limiting portion, the rotating body 110 is rotatably connected with the mounting seat 31, so that the rotating arm 10 has a capability of rotating relative to the mounting seat 31, and the rotating body 110 is connected with the housing of the electronic device through the rotating body 110, so that the rotating body 110 can drive the housing of the electronic device to rotate relative to the mounting seat 31 in the process of rotating relative to the mounting seat 31. As for the specific connection form between the housing and the mounting seat 31 and the rotating body 110, it can be determined according to the specific situation of the rotating relationship, and is not limited herein.

The synchronization arm 20 includes a synchronization body 210 and a second limit portion, and the synchronization body 210 and the second limit portion are fixedly connected, the synchronization body 210 is a component used for providing synchronization in the synchronization arm 20, specifically, the periphery of the synchronization body 210 may be provided with gear teeth, and by engaging the synchronization body 210 of one synchronization arm 20 with the synchronization body 210 of another synchronization arm 20, a synchronization state may be formed between two synchronization arms 20 corresponding to each other through a transmission relationship. Of course, the two synchronizing arms 20 corresponding to each other can form a synchronous relationship by sleeving a gear or the like outside the synchronizing body 210, and the two synchronizing arms 20 can rotate relatively in opposite directions.

In order to reduce the difficulty of transmission between the synchronization arms 20, more specifically, gear teeth may be provided on the outer circumference of the synchronization body 210, and a gear set may be additionally provided, so that the synchronization arms 20 corresponding to each other can form a transmission fit relationship through the gear set. Specifically, the gear set may include at least two gears 33, the two gears 33 being intermeshed and one of the two being intermeshed with gear teeth on one synchronizing body 210 and the other being intermeshed with gear teeth on the other synchronizing body 210. The hinge mechanism may further include two spacers 36, the spacers 36 are disposed on the two shafts 34, and the two shafts 34 are disposed on the two corresponding synchronization arms 20 respectively and rotate together with the synchronization arms 20. Meanwhile, in order to ensure that the gear set can stably provide a transmission function, a gear shaft can be arranged on the gasket 36 and provides a support function for the gear 33 in the gear set.

In addition, in order to improve the compactness of the components in the hinge mechanism and to lighten the hinge mechanism, the number of the mounting seats 31 may be plural, and the size and weight of each mounting seat 31 may be relatively small according to the number of the rotating arms 10 used to connect with the same housing in the hinge mechanism. For example, the hinge mechanism may include two rotating arms 10 connected to the same housing, and then the two mounting seats 31, and in order to enable the two mounting seats 31 to form a relatively fixed connection relationship, the hinge mechanism may further include a middle fixing plate 32, and both the two mounting seats 31 may be fixed on the middle fixing plate 32 by a connecting member such as a screw.

Optionally, a damping structure is further arranged in the hinge mechanism, and the hinge structure can achieve the purpose of stepless hovering or hovering at a specific angle by using the damping structure. Specifically, the damping mechanism includes the elasticity piece 35 that resets, and the elasticity piece 35 that resets butt between mount pad 31 and synchronous arm 20 through making the elasticity piece 35 that resets have initial elasticity, can provide the effect of restriction pivoted for the hinge mechanism, makes the hinge mechanism possess the function of hovering. More specifically, the hinge mechanism may further include a positioning member 38, and the positioning member 38 may be fixed to the fixed middle plate 32 by a coupling member such as a screw, and provides a positioning function for the synchronization arm 20 and the elastic restoring member 35. Specifically, the opposite ends of the elastic positioning element 35 can abut against the positioning element 38 and the synchronization body 210, respectively.

Alternatively, as shown in fig. 5, the hinge mechanism may further include an abutting member 37, the abutting member 37 and the synchronization body 210 can be engaged with each other by providing a cam structure on the abutting member 37 and the synchronization body 210, and the hinge mechanism is provided with a capability of hovering at a specific angle by means of the elastic restoring member 35.

As above, the rotor arm 10 includes the first spacing portion, the synchronization arm 20 includes the second spacing portion, the first spacing portion and the second spacing portion are for mutually supporting in the hinge mechanism, and provide limiting device, specific spacing direction is the rotation axis of hinge mechanism, so that the rotor arm 10 and the synchronization arm 20 form mutual spacing cooperation relation in the rotation axis of hinge mechanism, and then prevent that rotor arm 10 and synchronization arm 20 from relative motion in the rotation axis upwards, cause the axial dislocation to produce between the casing of electronic equipment, produce harmful effects to the life of the display screen of electronic equipment, and reduce the user experience of product.

In detail, one of the first limiting portion and the second limiting portion is provided with an accommodating groove 120, and the other one of the first limiting portion and the second limiting portion comprises a connecting shaft 230 and a limiting member 220, wherein in the process of assembling the first limiting portion and the second limiting portion, the connecting shaft 230 is inserted into the accommodating groove 120 along the rotating axial direction of the rotating body 110, and the connecting shaft 230 and the accommodating groove 120 form a rotating fit relationship; meanwhile, the limiting member 220 is fixedly connected to the connecting shaft 230, and under the condition that the connecting shaft 230 is inserted into the receiving groove 120, the limiting member 220 is located at an end surface of the receiving groove 120, and the limiting member 220 is larger in size in a direction perpendicular to the rotational axis of the rotational body 110 than in a corresponding direction of the receiving groove 120, so that the limiting member 220 is in limiting fit with the receiving groove 120 in the rotational axis direction of the rotational body 110.

Optionally, both ends of the containing groove 120 opposite to each other may be openings, that is, the containing groove 120 is a through structure, and meanwhile, as described above, the first limiting portion is fixedly connected to the rotating body 110, the second limiting portion is connected to the synchronizing body 210, if the containing groove 120 is disposed on the second limiting portion (that is, the synchronizing arm 20), the rotating body 110 may be located at the other end of the containing groove 120 away from the limiting member 220, and a reliable limiting relationship between the rotating arm 10 and the synchronizing arm 20 may be formed in the rotating axis direction of the rotating body 110 by using a limiting relationship between the end surfaces of the rotating body 110 and the containing groove 120 in the rotating axis direction of the rotating body 110.

In addition, in order to ensure that the limiting member 220 fixedly connected to the connecting shaft 230 can be installed on one side of the accommodating groove 120 away from the rotating body 110, the rotating body 110 or the synchronizing body 210 and the limiting member 220 can be formed by separate molding, and the rotating body 110 or the synchronizing body 210 and the limiting member 220 can be detachably and fixedly connected by way of screw connection or the like, in this case, the rotating body 110 and the limiting member 220 can be respectively installed from two opposite sides of the accommodating groove 120 which is arranged in a penetrating manner, and the rotating body 110 and the limiting member 220 can be respectively limited at two opposite ends of the accommodating groove 120.

It should be noted that, in order to ensure that the hinge mechanism can make two adjacent housings in the electronic device perform a relative rotation function, the rotating component is usually provided with a virtual rotating shaft, in this case, when the rotating component moves relative to the mounting seat 31, the rotating arm 10 and the synchronization arm 20 will rotate relative to the mounting seat 31 around different rotating axes, and for this reason, in the process of designing the hinge mechanism, it may be necessary to make the rotating arm 10 and the synchronization arm 20 have a relative rotation capability. For this reason, in the present application, the connecting shaft 230 can be moved in the receiving groove 120 along a direction perpendicular to the rotation axial direction of the rotating body 110, so as to ensure that the rotating arm 10 and the synchronizing arm 20 can move relative to each other, and that the rotating arm 10 and the synchronizing arm 20 having different rotation axial directions can normally perform a rotation motion relative to the mounting seat 31.

Specifically, the relative movement track between the rotating arm 10 and the synchronizing arm 20 can be determined according to the parameters such as the specific structure and size of the hinge mechanism, and the structure of the accommodating groove 120 is correspondingly designed based on the relative movement track, so that the connecting shaft 230 can move in the accommodating groove 120, and the rotating assembly can be ensured to work normally. Of course, other technical solutions may also be adopted, so that the rotating arm 10 and the synchronizing arm 20 can form a reliable rotating fit relationship and have the capability of relative movement at the same time, which is not limited herein.

The embodiment of the application discloses a hinge mechanism, which comprises a mounting seat 31 and a plurality of rotating components which are in rotating fit with the mounting seat 31, wherein each rotating component comprises a rotating arm 10 and a synchronizing arm 20, the rotating arms 10 and the synchronizing arms 20 are mutually matched and form a linkage relation, so that under the condition that one of the rotating arms and the synchronizing arms rotates relative to the mounting seat 31, the other one can also rotate relative to the mounting seat 31. The rotor arm 10 includes a rotor body 110 and a first limiting portion, the rotor body 110 is a component used for connecting the mounting seat 31 and the housing in the rotor arm 10, the synchronizer arm 20 includes a synchronizer body 210 and a second limiting portion, and the synchronizer body 210 is a device used for providing synchronization in the synchronizer arm 20, and it is ensured that the synchronizer arm 20 which is relatively matched can form a synchronous rotation state through a transmission matching relationship. One of the first limiting portion and the second limiting portion is provided with an accommodating groove 120, the other one of the first limiting portion and the second limiting portion comprises a connecting shaft 230 and a limiting member 220, the connecting shaft 230 can be inserted into the accommodating groove 120 along the rotation axial direction of the rotating body 110, the limiting member 220 is fixedly connected with the connecting shaft 230, and in the rotation axial direction of the rotating body 110, the limiting member 220 can be limited at one end face of the accommodating groove 120, so that the rotating arm 10 and the synchronizing arm 20 can form a limiting relation in the rotation axial direction, the rotating arm 10 and the synchronizing arm 20 are prevented from moving relatively along the rotation axial direction, it is ensured that two adjacent shells connected through the hinge mechanism in the electronic device can not generate axial dislocation basically, and further, the display screen of the electronic device is prevented from being damaged, and the user experience of the product is improved.

As described above, the connecting shaft 230 can rotate in the accommodating groove 120, and during the process of switching the hinge mechanism between the folded state and the unfolded state, since the rotation axes of the rotating body 110 and the synchronizing body 210 may be different, the accommodating groove 120 may be provided with a predetermined space, so that the connecting shaft 230 can move in the accommodating groove 120 in a direction perpendicular to the rotation axis direction. More specifically, during the switching of the hinge mechanism between the folded state and the unfolded state, one of the rotating body 110 and the synchronizing body 210 can drive the connecting shaft 230 to move relative to the other within the receiving groove 120, thereby accommodating the situation that the axes of the synchronizing arm 20 and the rotating arm 10 are different.

In the above embodiment, the receiving groove 120 may be a through structure, and the limiting member 220 and the device connected to the limiting member 220 through the connecting shaft 230 are respectively limited on the two opposite end surfaces of the receiving groove 120, so that the rotating arm 10 and the synchronizing arm 20 can form a limiting fit relation in the rotating axis direction of the rotating body 110.

In another embodiment of the present application, one of the first and second position-limiting portions, which is provided with the receiving groove 120, is further provided with a position-limiting groove 130, and the position-limiting groove 130 is communicated with one end of the receiving groove 120. Meanwhile, in a direction perpendicular to the axial direction of the rotation and the moving direction of the connecting shaft 230, the size of the limiting groove 130 is larger than that of the accommodating groove 120, so that the limiting groove 130 can provide an accommodating space for the limiting member 220, and it is ensured that the limiting member 220 can rotate along with the connecting shaft 230 in the limiting groove 130. Correspondingly, under the condition that the limiting member 220 extends into and is installed in the limiting groove 130 from the port at the end of the accommodating groove 120 away from the limiting groove 130, the limiting member 220 can be in limit fit with the end surface of the accommodating groove 120 facing the end of the limiting groove 130 (i.e. the end surface of the accommodating groove 130 is close to the end surface of the accommodating groove 120) in the rotation axis direction of the rotating body 110 in a manner that the size of the limiting member 220 is larger than that of the accommodating groove 120, so that the end surfaces at the two opposite ends of the limiting groove 130 are respectively in limit fit with the limiting member 220 to limit the relative movement of the synchronizing arm 20 and the rotating arm 10 in the rotation axis direction, thereby reducing the limitation of the specific structure of one of the synchronizing body 210 and the rotating body 110 connected with the limiting member 220 through the connecting shaft 230.

Based on the above technical solution, when the synchronization arm 20 and the rotation arm 10 need to be assembled, the limiting member 220 and the connection shaft 230 can be detachably and fixedly connected, and the limiting member 220 can be installed in the limiting groove 130 through the accommodating groove 120, and then the limiting member 220 and the connection shaft 230 are fixedly connected into a whole, so that the limiting member 220 and the limiting groove 130 can be mutually limited in the rotation axis direction.

Alternatively, an opening with a relatively large size may be formed at a position such as the end of the accommodating groove 120, and the limiting member 220 is installed in the limiting groove 130 through the opening, and then the connecting shaft 230 drives the limiting member 220 to move relative to the opening and away from the opening, or the limiting member 220 and the limiting groove 130 can be mutually limited in the rotation axis direction. In addition, by limiting parameters such as the relative movement track between the rotating arm 10 and the synchronizing arm 20, it can be ensured that the limiting member 220 and the connecting shaft 230 do not move to the opening during the operation of the hinge mechanism, and further, a reliable limiting fit relationship can be formed between the limiting member 220 and the limiting groove 130.

In another embodiment of the present application, optionally, the rotating body 110 or the synchronization body 210 and the limiting member 220 are formed by an integral molding manner, taking the limiting member 220 disposed on the synchronization arm 20 as an example, in this embodiment, the synchronization body 210, the connecting shaft 230 and the limiting member 220 are an integrated structure, so as to improve the overall structural stability of the synchronization arm 20.

Based on the above embodiment, the connecting shaft 230 can be made to extend into the accommodating groove 120 in a manner that the connecting shaft 230 is inclined relative to the rotational axial direction of the rotational body 110, so as to reduce the dimension of the limiting member 220 in the tangential direction perpendicular to the rotational axial direction and the moving direction of the connecting shaft 230, and ensure that the limiting member 220 with a relatively large dimension can extend into one end of the accommodating groove 120 and penetrate out to the other end of the accommodating groove 120 to be located in the limiting groove 130; then, the connecting shaft 230 is straightened, so that the axial direction of the connecting shaft 230 is parallel to the rotating axial direction of the rotating body 110, and the limiting member 220 is correspondingly rotated, in this case, since the dimension of the limiting member 220 in the direction perpendicular to the rotating axial direction and the tangential direction of the moving direction of the connecting shaft 230 is greater than the dimension of the accommodating groove 120 in the aforementioned direction, in the rotating axial direction, the end surfaces of the opposite ends of the limiting member 220 can be respectively limited to the end surfaces of the opposite ends in the limiting groove 130, so that the limiting member 220 and the component (i.e., the first limiting portion or the second limiting portion) where the accommodating groove 120 and the limiting groove 130 are located can form a limiting fit relation in the rotating axial direction.

In another embodiment of the present disclosure, when the rotating body 110 or the synchronizing body 210 and the position-limiting member 220 are formed by integral molding, the position-limiting member 220 can be limited by the structure and the size of the position-limiting member 220, so that the position-limiting member 220 can extend into the position-limiting groove 130 through the receiving groove 120 along the rotating axis of the rotating body 110, and the position-limiting member 220 can also be limited at an end surface of the receiving groove 120 facing the position-limiting groove 130 along the rotating axis.

Specifically, in a tangential direction perpendicular to the rotation axial direction and the moving direction of the connecting shaft 230, the size of the limiting groove 130 is a first size, the size of the accommodating groove 120 is a second size, and the second size is smaller than the first size, so that the end surface of the accommodating groove 120 can provide a limiting effect for the limiting member 220.

Accordingly, in order to ensure that the limiting member 220 can be in limiting fit with the accommodating groove 120, the structure and the size of the limiting member 220 also need to be limited. Specifically, an end surface of the limiting member 220 facing the connecting shaft 230 is a non-circular surface, and a maximum dimension of the non-circular surface in a direction perpendicular to the rotational axial direction is a maximum dimension of the limiting member 220 in the direction perpendicular to the rotational axial direction. That is, in the direction perpendicular to the rotation axial direction, the line segment with the largest dimension of the limiting member 220 is located on the end surface of the limiting member 220 facing the connecting shaft 230, and based on this, the line segment with the largest dimension is larger than the second dimension of the accommodating groove 120, so that the limiting member 220 and the end surface of the accommodating groove 120 can be ensured to form the limiting relationship in the rotation axial direction by the line segment.

Intuitively, the line segment having the aforementioned maximum size can be referred to as a first line segment, the first line segment extends along the first direction, and the size of the first line segment is a third size, that is, the maximum size of the limiting member 220 in the direction perpendicular to the rotation axis direction is a third size. In addition, the first direction is perpendicular to the rotational axial direction, or the first direction is one of countless directions perpendicular to the rotational axial direction.

Of course, considering that there may be relative rotation between the rotating arm 10 and the synchronizing arm 20 during the operation of the hinge mechanism, and further, in order to ensure that the first line segment with the aforementioned maximum size can be always limited at the end surface of the receiving groove 120, in detail, based on known parameters such as the maximum relative rotation angle between the rotating arm 10 and the synchronizing arm 20 and the specific value of the aforementioned second size, the specific size of the first line segment, the initial position of the first line segment, and the like can be designed to ensure that the first line segment on the non-circular surface can be always limited at the end surface of the receiving groove 120 along the rotation axis during the switching between the folded state and the unfolded state of the hinge mechanism.

Accordingly, in order to ensure that the limiting member 220 can extend into the accommodating groove 120 and is finally accommodated in the limiting groove 130, the limiting member 220 further has a relatively smaller dimension in a direction perpendicular to the rotational axis (another direction different from the first direction), that is, in one of the directions perpendicular to the rotational axis, the limiting member 220 has the above-mentioned maximum dimension, that is, the third dimension, and in another one of the directions perpendicular to the rotational axis, the limiting member 220 has another dimension, which is smaller than the third dimension and the second dimension, so that the limiting member 220 can extend into the accommodating groove 120 in a certain specific orientation, and the first line segment in the limiting member 220 can be limited on the end surface of the accommodating groove 120 by rotating the limiting groove 130 in the direction around the rotational axis, thereby ensuring that the end surfaces of the limiting member 220 and the accommodating groove 120 are mutually limited in the rotational axis direction.

Specifically, the limiting member 220 includes a first side surface and a second side surface that are disposed opposite to each other along a direction perpendicular to the rotation axis direction, and intuitively speaking, the opposite direction of the first side surface and the second side surface may be a second direction, and the second direction is the same as the first direction, and both are perpendicular to the rotation axis direction of the rotation body 110, and the difference is that the two are different directions. Meanwhile, the projection of the first side surface on the vertical plane of the rotation axial direction coincides with a figure of the first side surface, which is cut by a plane perpendicular to the rotation axial direction, or the first side surface is a surface formed by moving a certain line segment along the rotation axial direction, and specifically can be a plane or an arc surface, or can be a surface formed by splicing a plurality of planes or arc surfaces. Accordingly, the projection of the second side surface on the vertical plane in the rotational axial direction coincides with the figure of the second side surface, which is cut by the plane perpendicular to the rotational axial direction, that is, the second side surface is also the surface formed by moving a certain line segment in the rotational axial direction.

In addition, the maximum distance between the first side surface and the second side surface in the second direction is a fourth dimension, in this case, by making the fourth dimension smaller than the second dimension, it can be ensured that the limiting member 220 can extend into the accommodating groove 120. Of course, it should be noted that, in the case that the limiting member 220 extends into the accommodating groove 120 from the first side surface and the second side surface toward the two opposite side walls of the accommodating groove 120, the size of the first line segment on the limiting member 220 needs to be smaller than the corresponding size of the accommodating groove 120 in the extending direction of the first line segment.

In the above embodiment, the first size, the third size, the second size and the fourth size are sequentially decreased, so that the position-limiting member 220 can be installed in the position-limiting groove 130 through the accommodating groove 120, and the position-limiting member 220 can be ensured to be limited on the groove wall of the accommodating groove 120 by rotating the position-limiting member 220. More specifically, the first size may be a size n in fig. 10, the second size may be a size m in fig. 10, the third size may be a size b in fig. 11, and the fourth size may be a size a in fig. 11.

More specifically, the limiting member 220 may be a special-shaped structural member, and in order to reduce the processing difficulty of the limiting member 220, optionally, the limiting member 220 is a right prism or a right elliptic cylinder, and the size of the limiting member 220 in the corresponding direction may be selected correspondingly according to actual requirements, which is not limited herein.

As described above, one of the first and second limiting portions is provided with the receiving groove 120, and the other one includes the connecting shaft 230 and the limiting member 220, in the embodiment of the present application, the first limiting portion is provided with the receiving groove 120, that is, the rotating arm 10 is provided with the limiting groove 130, of course, as described above, the part provided with the receiving groove 120 may also be provided with the limiting groove 130, and for this purpose, the first limiting portion is provided with the receiving groove 120 and the limiting groove 130. Correspondingly, the second position-limiting portion includes the connecting shaft 230 and the position-limiting member 220, that is, the synchronization arm 20 includes the synchronization body 210, the connecting shaft 230 and the position-limiting member 220, which makes the reliability of the overall structure of the synchronization arm 20 relatively high, and further ensures that the reliability of the connection between the synchronization arm 20 and the rotation arm 10 is relatively high.

In the above embodiment, by rotating the connecting shaft 230 within the receiving groove 120 when the hinge mechanism is operated, it is possible to ensure relative rotation between the rotary arm 10 and the synchronization arm 20. In order to reduce the difficulty of the movement of the connection shaft 230 and improve the stability of the fit between the connection shaft 230 and the receiving groove 120, any cross section of the connection shaft 230 perpendicular to the rotation axis direction is a circular structure, and more specifically, the connection shaft 230 may be a cylindrical structural member.

Based on the hinge mechanism disclosed in any of the above embodiments, the embodiment of the present application further discloses an electronic device, where the electronic device includes two shells and any of the above hinge mechanisms, and any of the shells is fixedly connected to the rotating arm 10 in the hinge mechanism, and then, by using the rotating fit relationship between the rotating arm 10 and the mounting base 31, the two shells can relatively rotate through the hinge mechanism, so that the electronic device has the capability of switching between the folded state and the unfolded state.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element. Further, it should be noted that the scope of the methods and apparatus of the embodiments of the present application is not limited to performing the functions in the order illustrated or discussed, but may include performing the functions in a substantially simultaneous manner or in a reverse order based on the functions involved, e.g., the methods described may be performed in an order different than that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the present embodiments are not limited to those precise embodiments, which are intended to be illustrative rather than restrictive, and that various changes and modifications may be effected therein by one skilled in the art without departing from the scope of the appended claims.

Claims (10)

1. A hinge mechanism is characterized by comprising an installation seat and a plurality of rotating assemblies, wherein the hinge mechanism is provided with a folding state and an unfolding state, each rotating assembly is positioned on the same side of the installation seat under the condition that the hinge mechanism is in the folding state, and at least one rotating assembly is arranged on two opposite sides of the installation seat under the condition that the hinge mechanism is in the unfolding state;

each rotating assembly comprises a rotating arm and a synchronizing arm which are matched with each other, the rotating arm comprises a rotating body and a first limiting part which are fixedly connected, the rotating body is rotatably connected with the mounting seat, the synchronizing arm comprises a synchronizing body and a second limiting part which are fixedly connected, and the synchronizing body is in transmission connection with the other synchronizing arm;

one of the first limiting part and the second limiting part is provided with a containing groove, the other one of the first limiting part and the second limiting part comprises a connecting shaft and a limiting part, the connecting shaft is inserted into the containing groove along the rotating axial direction of the rotating body, the limiting part is fixedly connected with the connecting shaft, the rotating shaft of the rotating body is upward, and the limiting part is in limiting fit with the containing groove.

2. A hinge mechanism according to claim 1, wherein, in switching the hinge mechanism between the folded state and the unfolded state, one of the rotating body and the synchronizing body drives the connecting shaft to move relative to the other in the accommodating groove;

first spacing portion with be equipped with in the second spacing portion one of holding tank still is equipped with the spacing groove, just the spacing groove communicate in the one end of holding tank, at the perpendicular to the rotation axial with the tangential direction of the moving direction of connecting axle, the size of spacing groove is greater than the size of holding tank, the locating part certainly the holding tank deviates from the one end port of spacing groove stretches into and install in the spacing groove, the locating part with the holding tank orientation the one end terminal surface of spacing groove is in the spacing cooperation in the axis of rotation of rotating the body upwards.

3. A hinge mechanism according to claim 2, wherein the rotation body or the synchronization body and the stopper are formed by integral molding.

4. A hinge mechanism according to claim 3, wherein the size of the stopper groove is a first size and the size of the accommodation groove is a second size in a direction perpendicular to the rotational axial direction and a tangential direction to a moving direction of the connection shaft;

an end face, facing the connecting shaft, of the limiting part is a non-circular face, the maximum size of the non-circular face in the direction perpendicular to the rotation axial direction is the maximum size of the limiting part in the direction perpendicular to the rotation axial direction, in the process of switching the hinge mechanism between the folded state and the unfolded state, a first line segment, where the maximum size of the non-circular face is located, is limited on the end face of the accommodating groove along the rotation axial direction, the first line segment extends along the first direction, and the maximum size is a third size;

the limiting piece comprises a first side surface and a second side surface which are arranged in a second direction perpendicular to the rotating axial direction in an opposite mode, the projection of the first side surface on the vertical plane of the rotating axial direction is overlapped with the figure of the first side surface, which is cut by a plane perpendicular to the rotating axial direction, the projection of the second side surface on the vertical plane of the rotating axial direction is overlapped with the figure of the second side surface, which is cut by a plane perpendicular to the rotating axial direction, and the maximum distance between the first side surface and the second side surface in the second direction is a fourth size;

the first size, the third size, the second size, and the fourth size decrease in order.

5. A hinge mechanism according to claim 4, wherein the stop member is a right prism or a right elliptic cylinder.

6. A hinge mechanism according to claim 1, wherein the rotating body or the synchronizing body and the stopper are formed by separate molding.

7. A hinge mechanism according to claim 1, wherein the first position-limiting portion is provided with the receiving groove, and the second position-limiting portion includes the connecting shaft and the position-limiting member.

8. A hinge mechanism according to claim 1, wherein any section of the connecting shaft perpendicular to the rotational axis direction is a circular structure.

9. A hinge mechanism according to claim 1, wherein the outer periphery of any one of the synchronization bodies is provided with meshing teeth, the hinge mechanism further comprises a gear set, and the synchronization arms corresponding to each other are in meshing transmission through the gear set.

10. An electronic device comprising two housings and a hinge mechanism according to any one of claims 1-9, wherein each of the housings is fixedly connected to the pivot arm of the hinge mechanism, such that the two housings pivot relative to each other via the hinge mechanism.

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