CN117469280B

CN117469280B - Coupling assembling, pivot mechanism and electronic equipment

Info

Publication number: CN117469280B
Application number: CN202311829035.1A
Authority: CN
Inventors: 李江伟; 袁雷波; 魏亚蒙; 刘显亮; 张驰
Original assignee: Honor Device Co Ltd
Current assignee: Honor Device Co Ltd
Priority date: 2023-12-28
Filing date: 2023-12-28
Publication date: 2024-04-23
Anticipated expiration: 2043-12-28
Also published as: CN117469280A

Abstract

The application discloses a connecting component, a rotating shaft mechanism and electronic equipment, and belongs to the technical field of electronic equipment. The coupling assembly includes: a first connector and a pin; the first connecting piece is provided with a containing cavity and a first shaft hole communicated with the containing cavity; the pin shaft comprises a contact part and a penetrating part connected with the contact part, and the accommodating cavity is filled with solid phase change materials so as to enable the contact part to be fixedly connected with the first connecting piece; a sealing structure is arranged between the pin shaft and the first shaft hole. The rotating shaft mechanism comprises a first component, a second component and a connecting component; the first component is fixedly connected with the first connecting piece; the second component is movably connected with the pin shaft. The electronic equipment comprises a first sub-shell, a second sub-shell and a rotating shaft mechanism, wherein the first sub-shell and the second sub-shell are respectively connected with the rotating shaft mechanism, and the first sub-shell and the second sub-shell can rotate relatively through the rotating shaft mechanism. The application has the characteristics that two hinged parts can be separated, so that the parts can be completely maintained.

Description

Coupling assembling, pivot mechanism and electronic equipment

Technical Field

The present application relates to the field of electronic devices, and in particular, to a connection assembly, a rotating shaft mechanism, and an electronic device.

Background

With the development of electronic devices such as mobile phones, tablet computers, and notebook computers, foldable electronic devices have been developed in order to provide the electronic devices with a large screen and portability. The foldable electronic equipment has the characteristic of being foldable so as to be convenient for storage, adopts the cooperation of the flexible display screen and the rotating shaft mechanism, and utilizes the rotating shaft mechanism to realize the unfolding and folding of the electronic equipment. Along with the continuous improvement of the light-weight requirement of the electronic equipment, the light-weight and miniature rotating shaft mechanisms also become the main development direction in the future; in the rotating shaft mechanism, the hinge joint mode of the two parts is realized by adopting a pin shaft, and the fixing of the pin shaft is mainly realized by adopting a fusion welding mode, so that the pin shaft cannot be detached from the parts in the process of disassembling the rotating shaft mechanism, the two hinged parts cannot be separated, and if the hinge joint is forcedly broken and detached, the parts cannot be completely reserved, so that the rejection rate of the parts is higher.

Disclosure of Invention

The application provides a connecting component, a rotating shaft mechanism and electronic equipment, and aims to solve the technical problem that two parts cannot be detached when a pin shaft in the two hinged parts is fixed in a fusion welding mode.

The technical scheme is as follows:

A first aspect of the present application provides a connection assembly comprising: a first connector and a pin; the first connecting piece is provided with a containing cavity and a first shaft hole communicated with the containing cavity; the pin shaft comprises a contact part and a shaft penetrating part connected with the contact part, the shaft penetrating part is positioned in the first shaft hole, and the contact part is positioned in the accommodating cavity;

wherein, the holding cavity is filled with solid phase change material so that the contact part is fixedly connected with the first connecting piece; a sealing structure is arranged between the pin shaft and the first shaft hole and used for limiting the melted phase change material to flow out of the first shaft hole.

Through adopting above-mentioned scheme, after first connecting piece sets up the holding chamber, when assembling round pin axle and first connecting piece, make the phase change material that melts pack into the holding chamber, the seal structure who sets up simultaneously can reduce the phase change material that melts and flow out from first shaft hole, so that the phase change material that melts can wait to live in holding the chamber, restrict the flow of phase change material promptly effectively, make it can not flow out from first shaft hole, thereby help improving coupling assembling performance and reliability, reduce the waste and the loss of material simultaneously. When the phase change material is cooled, for example, to room temperature, the phase change material solidifies into a solid state, and when the phase change material changes from a molten state into a solid state, a certain volume change is generated, and the volume change can ensure that the phase change material fixes the pin shaft and the first connecting piece together, so that the fixing of the pin shaft is realized. When the phase change material needs to be disassembled, the phase change material is heated to be in a melting state again, so that the pin shaft is disassembled from the first connecting piece, and due to the existence of the sealing structure, no or a small amount of melted phase change material exists in a gap between the first shaft hole and the penetrating shaft part during the disassembly, so that the pin shaft is also easy to remove from the first shaft hole, the disassembly process is more convenient and rapid, and the operation complexity and the time cost are reduced; when the rotating shaft assembly is applied to the rotating shaft mechanism, the pin shaft can be detached from the parts, and the two hinged parts can be separated, so that the parts can be completely reserved.

In some implementations, the surface of the shaft penetration portion has a sealing structure;

or/and the inner wall of the first shaft hole is provided with a sealing structure.

By adopting the above-mentioned scheme, because the through shaft portion passes first shaft hole, consequently set up seal structure in at least one of the surface of the circumference of through shaft portion and the inner wall of first shaft hole, can restrict the flow of the phase change material that melts effectively.

In some implementations, the sealing structure includes at least one of a helical groove and an annular groove.

By adopting the scheme, the clearance between the penetrating shaft part and the first shaft hole is in a variable form in the axial direction along the first shaft hole, so that a closure clearance and an expansion space are formed, and the flow of the melted phase change material is effectively limited.

In some implementations, the surface of the contact has a first groove that is located in the receiving cavity.

Through adopting above-mentioned scheme, through the form that sets up first recess at the surface of contact portion, increased the volume of the phase change material in the empty chamber of receiving on the one hand, on the other hand also can exist solidified phase change material in first recess to can guarantee that the round pin axle can not follow the axial displacement of round pin axle self in first shaft hole, thereby guaranteed the stability that round pin axle and first connecting piece looks fixed connection, also improved coupling assembling's life.

In some implementations, the first groove is annular, the annular first groove being disposed around a circumference of the contact portion.

Through adopting above-mentioned scheme, can improve the volume of phase change material in the first recess like this, on the other hand also can make the homogeneity of atress between round pin axle and the first connecting piece to guaranteed the stability that round pin axle and first connecting piece looks fixed connection.

In some implementations, the surface of the contact has a first plane extending along an axial direction of the contact.

Through adopting above-mentioned scheme, after forming the phase change material that solidifies in holding the chamber, owing to the existence of first plane for the difficult relative rotation that takes place between round pin axle and the first connecting piece like this has realized the circumference fixed to the round pin axle promptly, thereby guaranteed the stability that the round pin axle is connected with first connecting piece.

In some implementations, the cavity wall of the receiving cavity has a second recess therein.

Through adopting above-mentioned scheme, after setting up the second recess on holding the chamber wall in chamber, phase change material also can fill in the second recess, can guarantee the stability of solid-state phase change material in holding the position in the chamber like this, avoid the round pin axle to drive solid-state phase change material and take place pivoted possibility together to the stability that the round pin axle is connected with first connecting piece has been guaranteed.

In some implementations, the connection assembly further includes a second connection member, the pin further including a connection portion, the connection portion being connected to the shaft portion;

the second connecting piece is movably connected with the connecting part.

Through adopting above-mentioned scheme, through because wear shaft part and first connecting piece fixed connection, consequently set up with wear shaft part fixed connection's connecting portion to be convenient for realize swing joint between first connecting piece and the second connecting piece.

In some implementations, the second connection is rotationally coupled to the connection;

Or/and the second connecting piece is in sliding connection with the connecting part.

By adopting the scheme, the connecting assembly can be applied to different scenes, for example, a scene that two parts relatively rotate, a scene that the two parts relatively slide, and a scene that the two parts can relatively rotate and slide.

In some implementations, the sealing structure is a gasket, the gasket is disposed on the connection portion, and the gasket is located at the aperture of the first shaft hole.

Through adopting above-mentioned scheme for the gasket can overlap on connecting portion, utilizes the mode that the gasket plugged the drill way in first shaft hole to realize reducing or avoiding melting phase change material to flow out from the drill way in first shaft hole.

In some implementations, the shaft portion is clearance fit with the first shaft bore when the phase change material is not filled in the receiving cavity.

By adopting the scheme, the processing and manufacturing of the first shaft hole and the shaft penetrating part are facilitated, and only the diameter of the first shaft hole is required to be larger than that of the shaft penetrating part. In addition, the penetrating shaft part can slide relative to the first shaft hole, so that the installation and the disassembly of the pin shaft are convenient. Moreover, the clearance fit mode is adopted, so that the processing and the manufacturing of the first shaft hole and the shaft penetrating part are facilitated, and the processing and the manufacturing are applicable to a scene of no threaded connection between the shaft penetrating part and the first shaft hole; when the sealing structure is processed on either the inner wall of the first shaft hole or the surface of the shaft penetrating portion, the diameter of the first shaft hole is only required to be larger than that of the shaft penetrating portion.

In some implementations, the cross-section of the contact is circular, elliptical, fan-shaped, or polygonal;

The cross section of the shaft penetrating part is round, elliptic, sector or polygonal.

By adopting the scheme, different designs can be carried out according to actual application scenes.

In some implementations, the first connector includes a first base and a securing ear fixedly coupled to the first base, the securing ear having a receiving cavity and a first shaft aperture.

By adopting the scheme, the fixing lug is beneficial to realizing the fixed connection with the penetrating shaft part, so that the fixed connection between the first connecting piece and the pin shaft is realized; and the first base is used for facilitating the application of the connecting assembly in different scenes, so that the connecting assembly can be used for connecting at least two different parts.

In some implementations, the first connector further includes a support ear fixedly connected to the first base, the pin penetrating the support ear;

the fixed lugs and the supporting lugs are distributed at intervals in the axial direction of the pin shaft so as to form a spacing space.

Through adopting above-mentioned scheme, utilize the supporting ear to support the round pin axle to the interval space of formation also is convenient for realize the swing joint between first connecting piece and the second connecting piece.

In some implementations, the second connecting piece includes a second base and a connecting ear, the second base being fixedly connected with the connecting ear;

the connecting lug is provided with a second shaft hole, the connecting lug is positioned in the interval space, the pin shaft is further arranged in the second shaft hole in a penetrating mode, and the pin shaft is in clearance fit with the second shaft hole.

Through adopting above-mentioned scheme, utilize the engaging lug in order to with round pin axle swing joint to realize swing joint between first connecting piece and the second connecting piece.

In some implementations, the phase change material is a glue or a braze.

By adopting the scheme, different phase change materials can be selected according to the implementation conditions, so that the fixing between the pin shaft and the first connecting piece is realized.

A second aspect of the present application provides a spindle mechanism, which includes a first component, a second component, and a connection assembly in any of the above implementations;

the first component is fixedly connected with the first connecting piece;

The second component is movably connected with the pin shaft.

Through adopting above-mentioned scheme, after coupling assembling is applied to pivot mechanism, after making phase change material melt, alright dismantle the round pin axle to realize the separation between first part and the second part, so that first part and second part can remain completely.

In some implementations, one of the first and second members is a base and the other is a swing arm.

Through adopting above-mentioned scheme, be convenient for realize the dismantlement between swing arm and the base like this to be convenient for realize pivot mechanism's maintenance.

The third aspect of the present application provides an electronic device, which includes a first sub-housing, a second sub-housing, and a rotating shaft mechanism in any of the foregoing implementations, where the first sub-housing and the second sub-housing are respectively connected to the rotating shaft mechanism, and the first sub-housing and the second sub-housing can rotate relatively through the rotating shaft mechanism.

Through adopting above-mentioned scheme, when the pivot mechanism is applied to electronic equipment like this to realize the separation between first part and the second part, so that first part and second part can be left completely, thereby also be convenient for realize the pivot mechanism to electronic equipment maintain.

In some implementations, the electronic device further includes a flexible display screen, and the first sub-housing and the second sub-housing are respectively fixedly connected with the flexible display screen.

By adopting the scheme, the detachable pin shaft is applied to foldable electronic equipment.

Drawings

Fig. 1 is a schematic structural diagram of an electronic device in a folded state according to an embodiment of the present application;

Fig. 2 is a schematic structural diagram of an electronic device in a semi-unfolded state according to an embodiment of the present application;

fig. 3 is a schematic structural diagram of an electronic device in an unfolded state according to an embodiment of the present application;

FIG. 4 is an exploded view of the electronic device of FIG. 3;

FIG. 5 is a schematic structural view of a connection assembly according to an embodiment of the present application;

FIG. 6 is a schematic view of the connection assembly of FIG. 5 from another perspective;

FIG. 7 is a cross-sectional view taken along line D-D of FIG. 6;

FIG. 8 is a schematic view of a pin in an embodiment of the present application;

Fig. 9 is a schematic view of a structure of a pin according to still another variation of the embodiment of the present application;

FIG. 10 is a schematic view of a further modified structure of a pin according to an embodiment of the present application;

FIG. 11 is a schematic view of a modified structure of the first connecting member according to the embodiment of the present application;

FIG. 12 is a partial schematic view of the clearance fit between the shaft penetrating portion and the first shaft hole when the accommodating chamber is not filled with the phase change material;

FIG. 13 is a schematic view of another form of seal arrangement for a connection assembly in accordance with an embodiment of the present application;

FIG. 14 is an exploded view of a connection assembly in an embodiment of the present application;

Fig. 15 is an assembly view of fig. 14.

Wherein, the meanings represented by the reference numerals are respectively as follows:

100. A spindle mechanism; 101. a base; 102. swing arms; 110. a connection assembly; 111. a first connector; 112. a second connector; 113. a pin shaft; 114. a receiving chamber; 115. a first shaft hole; 116. a contact portion; 117. a shaft penetrating portion; 118. a phase change material; 119. a sealing structure; 120. a feeding hole; 121. a material carrying cavity; 122. a second groove; 123. a connection part; 124. a support part; 125. a third shaft hole; 126. a first plane; 127. a first groove; 128. a gasket; 129. a first base; 130. a fixed ear; 131. a support ear; 132. a second base; 133. a connecting lug; 134. a second shaft hole; 135. a shut-off gap; 200. a display screen; 201. a first portion; 202. a second portion; 203. a foldable portion; 301. a first sub-shell; 302. and a second sub-shell.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present application more apparent, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

It should be understood that references to "a plurality" in this disclosure refer to two or more. In the description of the present application, "/" means or, unless otherwise indicated, for example, A/B may represent A or B; "and/or" herein is merely an association relationship describing an association object, and means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. In addition, in order to facilitate the clear description of the technical solution of the present application, the words "first", "second", etc. are used to distinguish the same item or similar items having substantially the same function and function. It will be appreciated by those of skill in the art that the words "first," "second," and the like do not limit the amount and order of execution, and that the words "first," "second," and the like do not necessarily differ.

The connection assembly, the rotating shaft mechanism and the electronic device provided by the embodiment of the application are explained in detail below.

Referring to fig. 1 to 3, fig. 1 is a schematic structural diagram of an electronic device in a folded state according to an embodiment of the present application, fig. 2 is a schematic structural diagram of an electronic device in a semi-unfolded state according to an embodiment of the present application, and fig. 3 is a schematic structural diagram of an electronic device in an unfolded state according to an embodiment of the present application.

In one or more embodiments, the present application provides an electronic device, which may be a foldable electronic device; the electronic device comprises a shell and a rotating shaft mechanism 100, wherein the shell comprises a first sub-shell 301 and a second sub-shell 302, the first sub-shell 301 and the second sub-shell 302 are respectively connected with the rotating shaft mechanism 100, and the first sub-shell 301 and the second sub-shell 302 can rotate relatively through the rotating shaft mechanism 100. Exemplary electronic devices may be cell phones, tablet computers, notebooks, or electronic readers. The foldable electronic device is not limited to the electronic device in which the display screen 200 is foldable, for example, a mobile phone, but may be an electronic device that can be folded or unfolded between the display screen 200 and a keyboard, for example: a notebook computer. It will be appreciated that the electronic device may also be an electronic device without the display screen 200. In addition, the electronic device can also be an earphone charging box, and the rotating shaft mechanism 100 realizes the hinge joint between the box body and the box cover of the earphone charging box; furthermore, the hinge mechanism 100 may be a hinge of a notebook.

In the embodiment of the present application, taking an electronic device as an example of a mobile phone, the electronic device further includes a display screen 200, where the display screen 200 may be a flexible display screen 200, and the display screen 200 is respectively connected to the first sub-shell 301 and the second sub-shell 302. The first sub-housing 301 and the second sub-housing 302 may comprise a center of the handset.

For convenience of description, as shown in the drawing, a width direction of the foldable electronic device may be defined as a B-B direction, a length direction of the foldable electronic device may be defined as an A-A direction, and a thickness direction of the foldable electronic device may be defined as a C-C direction. The A-A direction, the B-B direction and the C-C direction are mutually perpendicular to form a rectangular coordinate system.

The foldable electronic device shown in fig. 1 is in a folded state, the foldable electronic device shown in fig. 2 is in a semi-unfolded state, and the foldable electronic device shown in fig. 3 is in an unfolded state. The unfolding angle α of the foldable electronic device shown in fig. 2 is 90 degrees, and the unfolding angle β of the foldable electronic device shown in fig. 3 is 180 degrees. The state of the electronic equipment is the same as that of the rotating shaft mechanism 100, namely when the foldable electronic equipment is in a folded state, the rotating shaft mechanism 100 is also in the folded state; when the foldable electronic device is in the semi-unfolded state, the rotating shaft mechanism 100 is also in the semi-unfolded state; when the foldable electronic device is in the unfolded state, the spindle mechanism 100 is also in the unfolded state.

It should be noted that the angles illustrated in the embodiments of the present application allow for a few deviations. For example, the angle α of expansion of the foldable electronic device shown in fig. 2 is 90 degrees, which means that α may be 90 degrees, or may be about 90 degrees, such as 80 degrees, 85 degrees, 95 degrees, or 100 degrees. The angle β of the foldable electronic device shown in fig. 3 is 180 degrees, which means that β may be 180 degrees, or may be about 180 degrees, such as 170 degrees, 175 degrees, 185 degrees, 190 degrees, etc. The angles illustrated hereinafter are to be understood identically.

Referring to fig. 4, fig. 4 is an exploded view of the electronic device shown in fig. 3, and fig. 4 only illustrates a position of the spindle mechanism 100, but the specific structure of the spindle mechanism 100 is not limited; the first sub-housing 301 and the second sub-housing 302 are respectively mounted on both sides of the spindle mechanism 100 in the B-B direction, and the display screen 200 includes a first portion 201, a second portion 202, and a foldable portion 203. Foldable portion 203 is positioned between first portion 201 and second portion 202, and foldable portion 203 may be folded in the A-A direction. In this embodiment, the display 200 is a flexible display 200, for example, an organic light-emitting diode (OLED) display 200, an active-matrix organic light-emitting diode (AMOLED) display 200, a mini-organic light-emitting diode (mini organic lightemitting diode) display 200, a micro-organic light-emitting diode (micro organic light-emitting diode) display 200, a quantum dot dots LIGHT EMITTING diode (QLED) display 200, or the like.

The display screen 200 is folded by the relative approach of the first sub-housing 301 and the second sub-housing 302, so that the foldable electronic device is folded. When the foldable electronic device is in the folded state, the foldable portion 203 of the display screen 200 is bent, and the first portion 201 and the second portion 202 are disposed opposite to each other. At this time, the display screen 200 is located between the first sub-case 301 and the second sub-case 302, so that the probability of damaging the display screen 200 can be greatly reduced, and effective protection of the display screen 200 can be achieved.

Referring to fig. 2 and fig. 4 together, the first sub-housing 301 and the second sub-housing 302 rotate relatively through the rotation shaft mechanism 100, and the first sub-housing 301 and the second sub-housing 302 are relatively far away from each other to drive the display screen 200 to be unfolded, so that the foldable electronic device is unfolded to a half-unfolded state. When the foldable electronic device is in the semi-unfolded state, the first sub-housing 301 and the second sub-housing 302 are unfolded to have an included angle α, and the first portion 201 and the second portion 202 are relatively unfolded and drive the foldable portion 203 to be unfolded. At this time, the angle between the first portion 201 and the second portion 202 is α.

Referring to fig. 3 and fig. 4 together, the first sub-housing 301 and the second sub-housing 302 are relatively rotated by the rotating shaft mechanism 100, and the first sub-housing 301 and the second sub-housing 302 are relatively far away from each other to further expand the display screen 200 until the foldable electronic device is flattened. The spindle mechanism 100 may have a damping mechanism to achieve a feel of opening and closing and state maintenance during rotation.

When the electronic device is in a flattened state, the angle between the first sub-housing 301 and the second sub-housing 302 is β. The foldable portion 203 is unfolded and the first portion 201 and the second portion 202 are unfolded relatively. At this time, the included angles between the first portion 201, the second portion 202 and the foldable portion 203 are β, and the display screen 200 has a large-area display area, so as to realize large-screen display of the foldable electronic device, and improve the use experience of the user.

It should be noted that, the included angle α and the included angle β are included angles between the first sub-housing 301 and the second sub-housing 302, which are only used to distinguish the angle between the first sub-housing 301 and the second sub-housing 302 of the foldable electronic device in different states. Wherein the included angle α is an angle between the first sub-housing 301 and the second sub-housing 302 when the foldable electronic device is in the semi-unfolded state; the included angle β refers to an angle between the first sub-housing 301 and the second sub-housing 302 in the unfolded state of the foldable electronic device.

Fig. 5 is a schematic structural diagram of a connection assembly 110 according to an embodiment of the present application; as shown in connection with fig. 4 and 5, in one or more embodiments, the present application further provides a spindle mechanism 100, which includes a first component, a second component, and a connection assembly 110, where the first component and the second component are respectively connected to the connection assembly 110, and the movable connection between the first component and the second component is achieved through the connection assembly 110.

In some embodiments, one of the first and second components is a base 101 and the other is a swing arm 102. For example, when the hinge mechanism 100 is applied to a foldable electronic device, such as a foldable mobile phone, the first component is taken as the base 101, the second component is taken as the swing arm 102, and the swing arm 102 and the base 101 are movably connected, for example, may be rotationally connected or slidably connected. While the number of swing arms 102 may be plural, the length direction of the base 101 is parallel to the A-A direction. The first sub-shell 301 is connected with the base 101 through the swing arm 102, and the second sub-shell 302 is connected with the base 101 through the other swing arm 102, wherein one end of the swing arm 102 is movably connected with the base 101. The first sub-housing 301 may be slidably connected to the other end of one swing arm 102, or may be rotatably connected to the first sub-housing 301, and the second sub-housing 302 may be slidably connected to the other end of the other swing arm 102, or may be rotatably connected to the other end of the other swing arm. It should be noted that only the base 101 and the swing arm 102 in the spindle mechanism 100 are shown in fig. 4, and other components of the spindle mechanism 100 are not shown.

It should be noted that, in some other possible embodiments, the second component may be the base 101, and the first component may be the swing arm 102. In some possible embodiments, one of the first and second components may also be a door panel, the other being a swing arm 102; the door panel is a plate-shaped structure for supporting the flexible display screen 200 in the foldable electronic equipment, so that the flexible display screen 200 is flattened when the foldable electronic equipment is in an unfolded state. Of course, the first component and the second component may also be other structures in a scene that require the two components to be movably connected, and the embodiment of the present application is not specifically limited.

As shown in connection with fig. 4 and 5, in one or more embodiments, the present application provides a connection assembly 110 including a first connection member 111, a second connection member 112, and a pin 113; the first connecting piece 111 is fixedly connected with the pin 113, and the second connecting piece 112 is movably connected with the pin 113. The first component of the spindle mechanism 100 is fixedly connected with the first connecting piece 111; the second part is movably connected with the pin 113. The first component and the first connecting piece 111 may be fixedly connected by a fastener, the fastener may be a screw or a rivet, or may be fixedly connected by a welding manner, or may be an integral structure of the first component and the first connecting piece 111, that is, the first component and the first connecting piece 111 are manufactured by an integral molding process, and the integral molding process may be a die-casting molding process, a 3D printing process, a CNC (Computer Numerical Control ) processing process, or the like. The second component and the second connecting piece 112 may be fixedly connected by a fastener, the fastener may be a screw or a rivet, or may be fixedly connected by a welding manner, or may be an integral structure of the second component and the second connecting piece 112, that is, the second component and the second connecting piece 112 are manufactured by an integral molding process, and the integral molding process may be a die-casting molding process, a 3D printing process, a CNC (Computer Numerical Control ) processing process, or the like.

Fig. 6 is a schematic structural view of the connection assembly 110 of fig. 5 from another perspective, i.e., fig. 6 is a top view of fig. 5; FIG. 7 is a cross-sectional view taken along line D-D of FIG. 6; as shown in connection with fig. 6 and 7, in some embodiments, the first connecting member 111 has a receiving cavity 114 and a first shaft hole 115 communicating with the receiving cavity 114; the pin 113 includes a contact portion 116 and a shaft penetrating portion 117 connected to the contact portion 116. The penetrating shaft portion 117 is located in the first shaft hole 115, and the contact portion 116 is located in the accommodating chamber 114; the accommodating cavity 114 is filled with a phase change material 118 that becomes solid through a melting state, so that the contact portion 116 is fixedly connected with the first connecting piece 111, that is, the accommodating cavity 114 is filled with the solid phase change material, the phase change material is made of the phase change material 118, the phase change material 118 is heated to a certain temperature and then becomes a liquid state or a flowing state, and the solid state material is formed after cooling; a sealing structure 119 is provided between the pin 113 and the first shaft hole 115, and the sealing structure 119 is used for limiting the melted phase change material 118 from flowing out of the first shaft hole 115. It should be noted that, the melting temperature of phase change material 118 is lower than the minimum of the melting temperatures of first connecting member 111, second connecting member 112, and pin 113.

Thus, after the first connecting piece 111 is provided with the accommodating cavity 114, when the pin shaft 113 is assembled with the first connecting piece 111, the contact part 116 extends into the accommodating cavity 114, the penetrating shaft part 117 is positioned in the first shaft hole 115, and then the melted phase change material 118 is filled into the accommodating cavity 114, meanwhile, the sealing structure 119 can reduce the outflow of the melted phase change material 118 from the first shaft hole 115, so that the melted phase change material 118 can stay in the accommodating cavity 114, namely, the flow of the phase change material 118 is effectively limited, and the phase change material 118 cannot flow out from the first shaft hole 115, thereby being beneficial to improving the performance and reliability of the connecting assembly 110, reducing the waste and loss of the material, avoiding the adhesion between the second connecting piece 112 and the first connecting piece 111 due to the fact that the melted phase change material 118 cannot flow out from the first shaft hole 115 and adhere to the second connecting piece 112. After phase change material 118 cools, e.g., to room temperature, phase change material 118 solidifies into a solid state, phase change material 118 in the solid state is fixedly coupled to contact 116, and phase change material 118 in the solid state is fixedly coupled to first coupling member 111. When phase change material 118 changes from a molten state to a solid state, a volume change occurs that ensures that phase change material 118 secures pin 113 to first connector 111, thereby achieving the securement of pin 113. When the disassembly is needed, the phase change material 118 is heated to be in a melting state again, so that the disassembly of the pin shaft 113 from the first connecting piece 111 is facilitated, and due to the sealing structure 119, no or a small amount of melted phase change material 118 exists in a gap between the first shaft hole 115 and the penetrating shaft part 117 during the disassembly, so that the pin shaft 113 is also facilitated to be removed from the first shaft hole 115, the disassembly process is more convenient and rapid, and the complexity and the time cost of the operation are reduced; when the spindle assembly is applied to the spindle mechanism 100, the pin 113 can be detached from the component, and the two hinged components can be separated, so that the component can be completely maintained.

Referring to fig. 7, in some embodiments, the accommodating cavity 114 includes a feeding hole 120 and a loading cavity 121, where the feeding hole 120 is in communication with the loading cavity 121, and when the pin 113 and the first connecting piece 111 are assembled, the melted phase change material 118 enters from the feeding hole 120 and then enters the loading cavity 121, so that the phase change material 118 fills in the accommodating cavity 114, and after cooling, the fixing between the pin 113 and the first connecting piece 111 can be realized; the shape of the loading cavity 121 can be designed according to the needs, for example, the loading cavity can be spherical, cylindrical or prismatic; the feeding hole 120 may be a circular hole or a polygonal hole; by designing the feeding hole 120 and the loading cavity 121, the phase change material 118 solidified in the feeding hole 120 can realize the whole circumferential fixation of the phase change material 118 in the whole accommodating cavity 114, namely, the whole phase change material 118 is prevented from rotating around the axis of the pin shaft 113.

In order to achieve that the melted phase-change material 118 can completely fill the accommodating chamber 114 as much as possible, the charging hole 120 may be inclined to the vertical during assembly, so that the melted phase-change material 118 flows into the charging chamber 121 along the wall of the charging hole 120. In some other possible embodiments, at least part of the area around the orifice of the feed hole 120 may be a plane, and the axial direction of the feed hole 120 may be inclined to the plane, that is, the axial direction of the feed hole 120 is inclined to the plane, so that the feed hole 120 is inclined to the vertical during assembly, thereby facilitating the melted phase change material 118 to flow into the loading cavity 121 along the wall of the feed hole 120 to fill the accommodating cavity 114 as completely as possible.

Referring to fig. 7, in some embodiments, the cavity wall of the accommodating cavity 114 has a second groove 122, so that during the assembly process, the melted phase change material 118 will also fill in the second groove 122, and after the phase change material 118 cools to a solid state, the stability of the position of the solid phase change material 118 in the accommodating cavity 114 can be ensured, so that the possibility that the pin 113 drives the solid phase change material 118 to rotate together is avoided, and the stability of the connection between the pin 113 and the first connecting piece 111 is ensured. The second groove 122 is a recess formed on the cavity wall of the accommodating cavity 114, and the recess may also be referred to as a blind hole, which does not penetrate the first connecting member 111, and the blind hole may be a square hole or a circular hole.

Referring to fig. 7, the two ends of the contact portion 116 are respectively connected with a shaft penetrating portion 117, so that the contact portion 116 is located between the two shaft penetrating portions 117, the same accommodating cavity 114 is communicated with two first shaft holes 115, and the two shaft penetrating portions 117 are respectively located in two different first shaft holes 115.

Referring to fig. 7, the pin 113 further includes a connection portion 123, and the connection portion 123 is connected to the shaft penetrating portion 117; the second connecting piece 112 is movably connected with the connecting part 123, so that the connecting part 123 fixedly connected with the penetrating shaft part 117 is arranged due to the fixed connection of the penetrating shaft part 117 and the first connecting piece 111, and the movable connection between the first connecting piece 111 and the second connecting piece 112 is realized. In one embodiment, one end of the shaft penetrating portion 117 is fixedly connected to the contact portion 116, and the other end of the shaft penetrating portion 117 is fixedly connected to the connecting portion 123.

Referring to fig. 7, in some embodiments, the pin 113 further includes a supporting portion 124, the first connecting member 111 further includes a third shaft hole 125, the supporting portion 124 is inserted into the third shaft hole 125, and the supporting portion 124 is fixedly connected with the connecting portion 123; specifically, one end of the connecting portion 123 is fixedly connected with the other end of the shaft penetrating portion 117, and the other end of the connecting portion 123 is fixedly connected with one end of the supporting portion 124, so that connection between the first connecting member 111 and the second connecting member is facilitated, the second connecting member 112 is limited, and the second connecting member 112 is prevented from falling off from the pin 113. In fig. 7, two shaft penetrating portions 117 are respectively connected with one connecting portion 123, and two connecting portions 123 are respectively connected with one supporting portion 124, so that stable connection between the second connecting member 112 and the pin 113 is realized through the two connecting portions 123; and one of the two third shaft holes 125 on the first connecting member 111 may be in the form of a blind hole, so that when one end of the pin 113 abuts against the bottom of the blind hole, it is convenient to implement that each portion of the pin 113 is just located at the set position, that is, the through shaft portion 117 is located in the first shaft hole 115, the contact portion 116 is located in the accommodating cavity 114, the supporting portion 124 is located in the third shaft hole 125, and the connecting portion 123 is convenient to implement the movable connection with the second connecting member 112.

In some embodiments, the second connection 112 is rotationally coupled to the connection 123; or/and, the second connecting piece 112 is slidably connected with the connecting portion 123. In this way, the connection assembly 110 can be used in different situations, for example, a situation in which two parts rotate relatively, a situation in which two parts slide relatively, or a situation in which two parts can rotate relatively and slide relatively. For example, referring to fig. 7, the second connection member 112 is rotatably connected to the connection portion 123, that is, the second connection member 112 is rotatable about the axis of the pin 113 with respect to the connection portion 123.

It should be noted that, since the second connecting member 112 may be rotationally connected to the connecting portion 123 or slidably connected to the connecting portion 123, when the second connecting member 112 is rotationally connected to the connecting portion 123, the connecting assembly 110 may also be referred to as a rotating shaft assembly, that is, the first connecting member 111 and the second connecting member 112 are relatively rotated; when the second connection member 112 is slidably connected to the connection portion 123, the connection assembly 110 may also be referred to as a sliding assembly, i.e. the second connection member slides along the axial direction of the pin 113, so that the second connection member slides relative to the first connection member 111.

FIG. 8 is a schematic view of the structure of the pin 113 according to an embodiment of the present application, and in combination with FIGS. 7 and 8, the surface of the shaft penetrating portion 117 has a sealing structure 119 in some embodiments; or/and, the inner wall of the first shaft hole 115 has a sealing structure 119, so that since the penetrating shaft portion 117 penetrates the first shaft hole 115, the flow of the melted phase change material 118 can be effectively restricted by providing the sealing structure 119 on at least one of the circumferential surface of the penetrating shaft portion 117 and the inner wall of the first shaft hole 115.

In some embodiments, the sealing structure 119 comprises at least one of a spiral groove and an annular groove; the number of the annular grooves can be one or more, and can be specifically determined according to practical situations. This allows the gap between the shaft portion 117 and the first shaft hole 115 to be varied in the axial direction along the first shaft hole 115, thereby facilitating the formation of a shut-off gap and an expansion space to effectively restrict the flow of the melted phase change material 118. When the sealing structure 119 includes only a spiral groove, the surface of the shaft penetrating portion 117 is provided with the spiral groove, and the spiral groove forms an external thread structure on the surface of the shaft penetrating portion 117; or/and, the inner wall of the first shaft hole 115 is provided with a spiral groove, and the spiral groove enables the inner wall of the first shaft hole 115 to form an internal thread structure, so that the flow of the melted phase change material 118 can be well limited by the internal thread structure or the external thread structure; it will be appreciated by those skilled in the art that the helical groove may be provided only in a portion of a certain length in the axial direction of the shaft penetrating portion 117, or the helical groove may be provided in the entirety of the shaft penetrating portion 117, but the helical groove may extend to the contact portion 116. When the seal structure 119 includes only an annular groove, the circumferential surface of the shaft penetrating portion 117 is provided with an annular groove; or/and, the inner wall of the first shaft hole 115 is provided with an annular groove, so that the flow of the melted phase change material 118 can be well limited; it will be appreciated by those skilled in the art that the annular groove may be provided only in a portion of a certain length in the axial direction of the shaft penetrating portion 117, or the annular groove may be provided in the entirety of the shaft penetrating portion 117, but the annular groove may extend to the contact portion 116. When the sealing structure 119 includes both a spiral groove and an annular groove, the surface of the shaft penetrating portion 117 is provided with the spiral groove and the annular groove; or/and, the inner wall of the first shaft hole 115 is provided with a spiral groove and an annular groove; of course, a thread groove may be disposed on the surface of the shaft penetrating portion 117, and an annular groove may be disposed on the inner wall of the first shaft hole 115, or a thread groove may be disposed on the inner wall of the first shaft hole 115, and an annular groove may be disposed on the surface of the shaft penetrating portion 117; the specific situation can be determined according to the actual situation.

It should be noted that, when the shaft penetrating portion 117 has an external thread and the first shaft hole 115 has an internal thread, the external thread on the shaft penetrating portion 117 may be matched with the internal thread of the first shaft hole 115 to realize the threaded connection between the shaft penetrating portion 117 and the first shaft hole 115, or the external thread on the shaft penetrating portion 117 may not be matched with the internal thread of the first shaft hole 115, that is: when the accommodating chamber 114 is not filled with the phase change material 118, the penetrating shaft portion 117 can freely slide along the first shaft hole 115 without being limited by a screw structure when the penetrating shaft portion 117 penetrates the first shaft hole 115 during assembly.

Referring to FIG. 8, an embodiment of the present application is specifically illustrated with a sealing structure 119 on the surface of the shaft portion 117; the sealing structure 119 of the surface of the shaft penetrating portion 117 is in the form of annular grooves, and a plurality of annular grooves are spaced apart along the axial direction of the shaft penetrating portion 117.

Referring to fig. 8, the surface of the contact portion 116 has a first plane 126 extending along the axial direction of the contact portion 116, so that after the solidified phase change material 118 is formed in the accommodating cavity 114, the pin 113 is not easy to rotate relative to the first connecting piece 111 due to the first plane 126, that is, the pin 113 is fixed circumferentially, so that the stability of connecting the pin 113 with the first connecting piece 111 is ensured. The number of the first planes 126 may be one or more, for example, two; the two first planes 126 may be symmetrically disposed in the radial direction of the contact portion 116.

As shown in fig. 7 and 8, the surface of the contact portion 116 has a first groove 127, and the first groove 127 is located in the accommodating cavity 114, so that on one hand, the volume of the phase change material 118 in the cavity is increased, and on the other hand, the solidified phase change material 118 also exists in the first groove 127, so that the pin 113 can be ensured not to move along the axial direction of the pin 113 in the first shaft hole 115, thereby ensuring the stability of the fixed connection between the pin 113 and the first connecting piece 111, and also improving the service life of the connecting assembly 110. For example, the number of the first grooves 127 may be one, and the length of the first grooves 127 in the axial direction of the pin 113 may be one third, one half, or one half or more of the length of the contact portion 116 in the axial direction of the pin 113, or the length of the first grooves 127 in the axial direction of the pin 113 may be equal to the length of the contact portion 116 in the axial direction of the pin 113, so that the pin 113 may be prevented from being pulled out of the first connection member 111 due to the melted phase change material 118 attached to the contact portion 116 when detached.

Referring to fig. 8, the first groove 127 is annular, and the annular first groove 127 is disposed around the contact portion 116, so that the volume of the phase change material 118 in the first groove 127 can be increased, and on the other hand, the uniformity of stress between the pin 113 and the first connecting piece 111 can be also ensured, so that the stability of the fixed connection between the pin 113 and the first connecting piece 111 is ensured. It should be noted that in some other possible embodiments, the first groove 127 may also have a three-dimensional spiral shape, so as to avoid the pin 113 moving along its own axis after the phase change material 118 is solidified.

Fig. 9 is a schematic view of a further modified structure of the pin 113 according to the embodiment of the present application; in another embodiment, the number of the first grooves 127 may be plural, and the plural first grooves 127 are disposed at intervals along the axial direction of the pin 113, for example, the number of the first grooves 127 is two, 3 or 4, etc., so that the locking force of the phase change material 118 on the pin 113 can be increased; referring to fig. 9, the number of the first grooves 127 is 2.

Fig. 10 is a schematic view of still another modified structure of the pin 113 according to the embodiment of the present application; FIG. 11 is a schematic view of a modified structure of the first connecting member according to the embodiment of the present application, and three cavities 114 are shown in FIG. 11; in still other embodiments, as shown in fig. 10 and 11, a sealing structure 119, a first groove 127 and a first plane 126 may also be disposed at the supporting portion 124, and a receiving cavity 114 may be formed on the first connecting member 111 at a position corresponding to the supporting portion 124, so as to implement fixing between the supporting portion 124 and the first connecting member 111 by using the solid phase change material 118, and a specific structural details may be referred to the description of the corresponding structures in fig. 7, 8 and 9.

In some embodiments, the cross-section of the contact portion 116 is circular, elliptical, fan-shaped, or polygonal; the cross section of the penetrating shaft part 117 is circular, elliptical, fan-shaped or polygonal, so that different designs can be carried out according to practical application scenes; while the cross-section of the connecting portion 123 may be circular or fan-shaped, the arc of the fan-shaped may be a major arc, which facilitates the rotational connection between the second connecting member 112 and the connecting portion 123. Of course, when the second connecting member 112 is slidably connected to the connecting portion 123, the cross section of the connecting portion 123 may be elliptical or polygonal, and the polygonal shape may be triangular, rectangular or regular pentagonal.

Fig. 12 is a schematic partial structure of clearance fit between the shaft penetrating portion 117 and the first shaft hole 115 when the phase change material 118 is not filled in the accommodating cavity 114, and referring to fig. 12, in some embodiments, clearance fit between the shaft penetrating portion 117 and the first shaft hole 115 when the phase change material 118 is not filled in the accommodating cavity 114 is convenient for manufacturing the first shaft hole 115 and the shaft penetrating portion 117, and only the diameter of the first shaft hole 115 is required to be larger than the diameter of the shaft penetrating portion 117. In addition, the penetrating shaft portion 117 can slide relatively with the first shaft hole 115, so that the mounting and dismounting of the pin 113 are facilitated. Moreover, the clearance fit mode is adopted, so that the processing and the manufacturing of the first shaft hole 115 and the shaft penetrating part 117 are facilitated, and the processing and the manufacturing are applicable to a scene that the shaft penetrating part 117 and the first shaft hole 115 are not connected by threads; when the seal structure 119 is formed on either the inner wall of the first shaft hole 115 or the surface of the shaft penetrating portion 117, the diameter of the first shaft hole 115 is only required to be larger than the diameter of the shaft penetrating portion 117. When the sealing structure 119 in the form of a spiral groove or an annular groove is provided on either one of the penetrating shaft portion 117 and the first shaft hole 115, the gap between the penetrating shaft portion 117 and the first shaft hole 115 is the intercepting gap 135, so as to achieve the purpose of sealing the phase change material 118 flowing when melting.

FIG. 13 is a schematic view of another form of a seal 119 for the connecting assembly 110 according to the embodiment of the present application, referring to FIG. 13, in other embodiments, the seal 119 is a gasket 128, the gasket 128 is disposed on the connecting portion 123, and the gasket 128 is located at the opening of the first shaft hole 115; the gasket 128 may be a ring-shaped gasket 128 or a semi-ring-shaped gasket 128, so that the gasket 128 may be sleeved on the connecting portion 123, and the manner that the gasket 128 blocks the orifice of the first shaft hole 115 is used to reduce or avoid the melted phase change material 118 from flowing out of the orifice of the first shaft hole 115. Note that in fig. 12, the accommodating chamber 114 is not yet filled with the phase change material 118.

FIG. 14 is an exploded view of the connection assembly 110 in an embodiment of the present application, FIG. 15 is an assembled view of FIG. 14, wherein the phase change material 118 is not shown in FIGS. 14 and 15, and in conjunction with FIGS. 14 and 15, the first connection member 111 includes a first base portion 129 and a securing tab 130, the securing tab 130 being fixedly coupled to the first base portion 129, the securing tab 130 having a receiving cavity 114 and a first shaft aperture 115 therein; thus, the fixed connection between the fixing lug 130 and the penetrating shaft part 117 is facilitated, and the fixed connection between the first connecting piece 111 and the pin shaft 113 is realized; while the first base portion 129 facilitates application of the connection assembly 110 in different contexts, enabling the connection assembly 110 to connect at least two different components. Illustratively, referring to fig. 13, the first base 129 is in the form of a plate, and the fixing lug 130 is integrally formed with the first base 129.

As shown in connection with fig. 14 and 15, in some embodiments, the first connecting member 111 further includes a supporting ear 131, the supporting ear 131 is fixedly connected with the first base 129, and the pin 113 penetrates the supporting ear 131; the fixing lugs 130 and the supporting lugs 131 are spaced apart from each other in the axial direction of the pin shaft 113 to form a space, so that the pin shaft 113 is supported by the supporting lugs 131, and the formed space is also convenient for realizing movable connection between the first connecting piece 111 and the second connecting piece 112. Illustratively, the third shaft hole 125 is located on the support ear 131, and the support portion 124 of the pin 113 is inserted into the third shaft hole 125 on the support ear 131; the number of the supporting lugs 131 is two, and the fixing lugs 130 are positioned between the two supporting lugs 131, so that the reliability of movable connection between the second connecting piece 112 and the connecting part 123 between the pin shafts 113 is realized. It should be noted that the number of the supporting lugs 131 is not limited to two, but may be 1, 3 or four, that is, the number of the supporting lugs 131 may be one or more. The number of the fixing lugs 130 is not limited to 1, but may be 2, 3 or four, that is, the number of the fixing lugs 130 may be one or more.

Referring to fig. 14 and 15, the second connecting member 112 includes a second base 132 and a connecting lug 133, where the second base 132 is fixedly connected to the connecting lug 133; the connecting lug 133 has a second shaft hole 134, the connecting lug 133 is located in the space, the pin 113 is further disposed through the second shaft hole 134, and the pin 113 is in clearance fit with the second shaft hole 134. The connecting lug 133 is used for movably connecting with the pin 113, so that the movable connection between the first connecting piece 111 and the second connecting piece 112 is realized. For example, the second base 132 and the connecting lugs 133 are integrally formed, and the number of the connecting lugs 133 is two, and the two connecting lugs 133 are respectively located in two spacing spaces formed on the first connecting piece 111, so that the movable connection between the second connecting piece 112 and the pin 113 has higher reliability. When the connection assembly 110 is applied to the spindle mechanism 100, the first member is fixedly connected to the first base 129 and the second member is fixedly connected to the second base 132.

In some embodiments, phase change material 118 is a glue or braze material, so that different phase change materials 118 may be selected to achieve the fixation between pin 113 and first connector 111, depending on the implementation. The adhesive material can be hot melt adhesive, and the hot melt adhesive can be ethylene-vinyl acetate copolymer, polyamide or polyurethane; the brazing material may be tin, lead or aluminum, or an alloy containing at least one metal of tin, lead or aluminum, and the present application is not particularly limited. The first connection member 111, the second connection member 112, and the pin 113 in the connection assembly 110 may be a metal material such as steel, aluminum alloy, or titanium alloy; of course, in some other possible embodiments, non-metallic materials that are resistant to high temperatures may also be used. When the connection assembly 110 is assembled, the first connection piece 111 and the second connection piece 112 are assembled together through the pin shaft 113, then the phase change material 118 is heated, the melted phase change material 118 is added into the accommodating cavity 114, after the melted phase change material 118 is cooled to form a fixed state, a phase change medium is formed, and the fixation between the pin shaft 113 and the first connection piece 111 is achieved. When the first connecting piece 111 and the second connecting piece 112 need to be detached, the first connecting piece 111 is heated or the solid phase change material 118 is heated to be melted, the phase change material 118 is kept in a melted state, the orifice of the feeding hole 120 of the accommodating cavity 114 is inclined towards or downwards, the melted phase change material 118 flows out of the accommodating cavity 114, and the pin shaft 113 is detached from the first connecting piece 111. Illustratively, the phase change material 118 is used as a brazing material, and the first connecting member 111, the second connecting member 112 and the pin shaft 113 in the connecting assembly 110 are used as metal materials, and the fixing of the pin shaft 113 and the first connecting member 111 is achieved by adding the melted brazing material into the accommodating cavity 114 by using a metal with a melting point lower than that of the material of the connected assembly 110 as a brazing filler metal; when the pin 113 needs to be disassembled, the connecting assembly 110 can be inverted and heated to the melting temperature of the brazing material, and the liquid brazing material flows out of the accommodating cavity 114 under the action of gravity, so that only the pin 113 and the first connecting piece 111 are reserved, and the efficient disassembly of the connecting assembly 110 and the recycling of each component are realized.

In the description of the present application, a particular feature, structure, material, or characteristic may be combined in any one or more embodiments or examples in a suitable manner.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and are not limiting; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A connection assembly, comprising:

The first connecting piece is provided with a containing cavity and a first shaft hole communicated with the containing cavity;

The pin shaft comprises a contact part and a shaft penetrating part connected with the contact part, the shaft penetrating part is positioned in the first shaft hole, and the contact part is positioned in the accommodating cavity;

The accommodating cavity is filled with solid phase change materials, so that the contact part is fixedly connected with the first connecting piece; and a sealing structure is arranged between the pin shaft and the first shaft hole and is used for limiting the melted phase change material to flow out of the first shaft hole.

2. The connection assembly of claim 1, wherein a surface of the shaft portion has the sealing structure;

or/and the inner wall of the first shaft hole is provided with the sealing structure.

3. The connection assembly of claim 2, wherein the sealing structure comprises at least one of a spiral groove and an annular groove.

4. A connection assembly according to any one of claims 1-3, wherein the surface of the contact portion has a first recess, the first recess being located in the receiving cavity.

5. The connection assembly of claim 4, wherein the first groove is annular in shape, the annular first groove being disposed about a circumference of the contact portion.

6. A connection assembly according to any one of claims 1-3, wherein the surface of the contact portion has a first plane extending in the axial direction of the contact portion.

7. A connection assembly according to any one of claims 1-3, wherein the cavity wall of the receiving cavity has a second recess therein.

8. A connection assembly according to any one of claims 1 to 3, wherein the connection assembly further comprises a second connection member, the pin further comprising a connection portion, the connection portion being connected to the shaft portion;

the second connecting piece is movably connected with the connecting part.

9. The connection assembly of claim 8, wherein the second connection member is rotatably coupled to the connection portion;

10. The connection assembly of claim 8, wherein the sealing structure is a gasket disposed on the connection portion and at the aperture of the first shaft bore.

11. A connection assembly according to any one of claims 1 to 3, wherein the shaft portion is in clearance fit with the first shaft aperture when the receiving cavity is not filled with the phase change material.

12. A connection assembly according to any one of claims 1 to 3, wherein the cross-section of the contact portion is circular, elliptical, fan-shaped or polygonal;

The cross section of the shaft penetrating part is round, elliptic, fan-shaped or polygonal.

13. The connector assembly of claim 8, wherein the first connector includes a first base portion and a securing tab fixedly connected to the first base portion, the securing tab having the receiving cavity and the first shaft aperture thereon.

14. The connection assembly of claim 13, wherein the first connector further comprises a support tab fixedly connected to the first base, the pin penetrating the support tab;

The fixing lugs and the supporting lugs are distributed at intervals in the axial direction of the pin shaft so as to form a spacing space.

15. The connector assembly of claim 14, wherein the second connector comprises a second base and a connector lug, the second base being fixedly connected to the connector lug;

16. A connection assembly according to any one of claims 1-3, wherein the phase change material is a glue or a solder.

17. A spindle mechanism comprising a first component, a second component and a connection assembly as claimed in any one of claims 1 to 16;

the first component is fixedly connected with the first connecting piece;

The second component is movably connected with the pin shaft.

18. The spindle mechanism of claim 17 wherein one of the first and second members is a base and the other is a swing arm.

19. An electronic device, comprising a first sub-shell, a second sub-shell and a rotating shaft mechanism as shown in claim 17 or 18, wherein the first sub-shell and the second sub-shell are respectively connected with the rotating shaft mechanism, and the first sub-shell and the second sub-shell can relatively rotate through the rotating shaft mechanism.

20. The electronic device of claim 19, further comprising a flexible display, wherein the first sub-housing and the second sub-housing are each fixedly connected to the flexible display.