Transmission mechanism and electronic equipment

Abstract

The present disclosure relates to a transmission mechanism and an electronic device. During the rotation process, the rotating assembly of the transmission mechanism pushes the transmission assembly to move along the axial direction of the rotating assembly through a push portion and a first limiting portion, and the base frame assembly is provided with a first positioning portion, and one end of the transmission assembly is movably inserted in the first positioning portion, which limits the displacement direction of the transmission assembly and enhances the stability of the transmission assembly along the axial movement of the rotating assembly, thereby improving the transmission stability and structural reliability of the transmission mechanism and the user experience of the electronic device using the above transmission mechanism.

Description

Technical Field

[0001] The present disclosure relates to the field of electronic technology, and in particular to transmission mechanisms and electronic equipment. Background Art

[0002] For example, the folding screen of electronic devices such as mobile phones is portable when folded, and can increase the screen size of the electronic device when unfolded. The switching between the folded state and the unfolded state usually needs to be achieved through a transmission mechanism.

[0003] During the folding and unfolding process of the screen module, the transmission mechanism is subjected to tension, friction and shear force, which can easily cause deformation and displacement of the main components of the transmission mechanism, thereby reducing the structural reliability and service life of the transmission mechanism and deteriorating the user experience. Summary of the invention

[0004] The present disclosure provides a transmission mechanism and an electronic device to improve the transmission stability and structural reliability of the transmission mechanism, thereby improving the user experience of the electronic device.

[0005] According to a first aspect of the present disclosure, a transmission mechanism is provided, the transmission mechanism comprising:

[0006] A rotating assembly, the rotating assembly comprising at least one pushing portion;

[0007] A transmission assembly, the transmission assembly comprising at least one first limiting portion, the first limiting portion abutting against the push portion, so that during the rotation of the rotating assembly, the transmission assembly is pushed by the push portion and the first limiting portion to move along the axial direction of the rotating assembly;

[0008] The base frame assembly is provided with a first positioning portion, and one end of the transmission assembly is movably inserted in the first positioning portion.

[0009] Optionally, the transmission assembly includes:

[0010] A first limiting member, wherein one end of the first limiting member is provided with the first limiting portion;

[0011] At least one transmission member, the transmission member is inserted in the first limiting member and the rotating assembly, and the other end of the first limiting member is in contact with the transmission member, and one end of the transmission member is movably inserted in the first positioning portion.

[0012] Optionally, the transmission member includes:

[0013] The transmission member body, the first limiting member is provided with a first assembly hole, and the transmission member body is inserted into the first assembly hole and the rotating assembly;

[0014] A first abutting portion, one end of which is connected to one end of the transmission member body, and one end of the first abutting portion is abutted and matched with the first limiting member;

[0015] At least one positioning matching portion, the other end of the first abutting portion is connected to the positioning matching portion, and the positioning matching portion is movably inserted in the first positioning portion.

[0016] Optionally, a contact surface is provided on one side of the first position limiting member, and a cam structure is provided on the other side of the first position limiting member, one end of the first contact portion is in contact with the contact surface, and the push portion is in contact with the cam structure.

[0017] Optionally, the transmission assembly further includes:

[0018] The third limiting member;

[0019] The second limiting member, the push portion comprises: a first push portion and a second push portion arranged opposite to each other, the first push portion abuts against the first limiting member, the second limiting member abuts against the second push portion, the transmission member comprises a second limiting member, the third limiting member is provided with a second assembly hole, the transmission member passes through the second assembly hole, and the second limiting member is engaged with the third limiting member;

[0020] The transmission member body is sequentially inserted into the second limit member, the elastic member and the third limit member, and the two ends of the elastic member are elastically abutted against the second limit member and the third limit member respectively.

[0021] Optionally, the transmission mechanism further includes a floating plate assembly and a middle frame fixing member slidably matched with the floating plate assembly; the rotating assembly includes a rotating member, and the rotating member includes:

[0022] A main body, wherein the push portion is disposed at at least one end of the main body;

[0023] A first sliding portion is disposed on one side of the main body; the first sliding portion is slidably matched with the floating plate assembly;

[0024] The second sliding part is arranged on one side of the main body, and the second sliding part is slidably matched with the middle frame fixing part.

[0025] Optionally, the pushing portion includes a cam structure provided at at least one end of the main body, and the cam structure is in pushing cooperation with the first limiting portion.

[0026] Optionally, the rotating assembly includes two rotating members symmetrically arranged relative to the center line of the transmission mechanism, and the two rotating members are in transmission cooperation;

[0027] The main body comprises a through hole arranged along the axial direction of the rotating member, and the transmission member is movably inserted into the through hole.

[0028] Optionally, the rotating assembly further includes at least one transmission gear meshing with the main body, the base assembly further includes a second positioning portion, the transmission gear includes a gear body and a guide end disposed on the gear body, and the guide end is movably inserted into the second positioning portion.

[0029] Optionally, the base frame assembly further includes at least one fourth limiting member, and the fourth limiting member includes a first axial limiting portion and a first longitudinal limiting portion, and the first axial limiting portion and the first longitudinal limiting portion are respectively limited and cooperated with the gear body.

[0030] Optionally, at least one fourth limiting member includes an auxiliary limiting structure, which includes a second axial limiting portion and a second longitudinal limiting portion, and the second axial limiting portion and the second longitudinal limiting portion are respectively limited and cooperated with the rotating member.

[0031] Optionally, the base frame assembly includes a first bracket, a second bracket, a cover plate and a track bar, the first bracket and the second bracket are fixedly connected to enclose a first accommodation space, and the first bracket and the cover plate are fixedly connected to enclose a second accommodation space;

[0032] The first bracket and / or the second bracket located in the first accommodation space is provided with a rotating part, the track rod includes a first rotating matching part and a second rotating matching part, the first rotating matching part is accommodated in the accommodation space and rotationally matched with the rotating part; the second rotating matching part extends from the first bracket and / or the second bracket to the first accommodation space, and the second rotating matching part is rotationally connected to the middle frame fixing member;

[0033] The transmission gear, the main body, the first limit member, the second limit member, the third limit member, the fourth limit member, the elastic member and at least a portion of the transmission member are accommodated in the second accommodating space, and the first sliding member and the second sliding member extend out of the first accommodating space from the first bracket and / or the cover plate; the fourth limit member is arranged on the first bracket and / or the cover plate.

[0034] Optionally, the base frame assembly also includes a fixing member, which is fixedly connected to the first bracket and the cover plate respectively; one end of the transmission member is movably inserted into the first positioning portion, and the other end of the transmission member is movably inserted into the fixing member; the first positioning portion and the second positioning portion are arranged on the second bracket.

[0035] According to a second aspect of the present disclosure, an electronic device is provided, the electronic device comprising a first body, a second body and any one of the transmission mechanisms described in the first aspect, the rotating assembly comprising at least two rotating members for transmission cooperation, the push portion being arranged on the rotating member, and the transmission assembly being pushed to move along the axial direction of the rotating member by the push portion and the first limiting portion during the rotation of the rotating member;

[0036] The transmission mechanism further includes at least two middle frame fixing members that are slidably matched with the rotating member, one of the middle frame fixing members is fixedly connected to the first main body, and one of the middle frame fixing members is fixedly connected to the second main body.

[0037] The technical solution provided by the embodiments of the present disclosure may have the following beneficial effects:

[0038] The rotating assembly of the present invention pushes the transmission assembly to move axially along the rotating assembly through the push portion and the first limiting portion during the rotation process. The base assembly is provided with a first positioning portion, and one end of the transmission assembly is movably inserted in the first positioning portion, which limits the displacement direction of the transmission assembly and enhances the stability of the transmission assembly along the axial movement of the rotating assembly, thereby improving the transmission stability and structural reliability of the transmission mechanism and the user experience of electronic equipment using the above-mentioned transmission mechanism.

[0039] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0041] Figure 1 It is one of the partial structural schematic diagrams of a transmission mechanism in an exemplary embodiment of the present disclosure;

[0042] Figure 2 This is the second partial structural schematic diagram of a transmission mechanism in an exemplary embodiment of the present disclosure;

[0043] Figure 3 is a structural schematic diagram of a first position-limiting member in an exemplary embodiment of the present disclosure;

[0044] Figure 4 This is the third partial structural schematic diagram of a transmission mechanism in an exemplary embodiment of the present disclosure;

[0045] Figure 5 is a structural schematic diagram of a second position-limiting member in an exemplary embodiment of the present disclosure;

[0046] Figure 6is a structural schematic diagram of a third position-limiting member in an exemplary embodiment of the present disclosure;

[0047] Figure 7 This is a fourth partial structural schematic diagram of a transmission mechanism in an exemplary embodiment of the present disclosure;

[0048] Figure 8 is a structural schematic diagram of a rotating member in an exemplary embodiment of the present disclosure;

[0049] Fig. 9 is a structural schematic diagram of a middle frame fixing member in an exemplary embodiment of the present disclosure;

[0050] Fig.10 is a schematic structural diagram of a track bar in an exemplary embodiment of the present disclosure;

[0051] Fig.11 is a structural schematic diagram of a floating plate assembly in an exemplary embodiment of the present disclosure;

[0052] Fig.12 This is the fifth partial structural schematic diagram of a transmission mechanism in an exemplary embodiment of the present disclosure;

[0053] Fig.13 It is a structural schematic diagram of a base frame assembly in an exemplary embodiment of the present disclosure. DETAILED DESCRIPTION

[0054] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0055] For example, the folding screen of electronic devices such as mobile phones is portable when folded, and can increase the screen size of the electronic device when unfolded. The switching between the folded and unfolded states usually needs to be achieved through a transmission mechanism. In the process of folding and unfolding the screen module, the transmission mechanism is subjected to tension, friction, and shear force, which can easily cause the main components of the transmission mechanism to deform and deviate, reducing the structural reliability and service life of the transmission mechanism, and reducing the user experience.

[0056] The present disclosure provides a transmission mechanism. Figure 1 is one of the partial structural diagrams of a transmission mechanism in an exemplary embodiment of the present disclosure, such as Figure 1As shown, the transmission mechanism 1 includes: a rotating assembly 11, a transmission assembly 12 and a base assembly 13. The rotating assembly 11 includes at least one push portion 111, and the transmission assembly 12 includes at least one first position-limiting portion 1211, and the first position-limiting portion 1211 abuts against the push portion 111, so that the transmission assembly 12 is pushed to move along the axial direction of the rotating assembly 11 through the push portion 111 and the first position-limiting portion 1211 during the rotation of the rotating assembly 11. The base assembly 13 is provided with a first positioning portion 131, and one end of the transmission assembly 12 is movably inserted in the first positioning portion 131.

[0057] It should be noted that the axial direction of the rotating component 11 may refer to the extending direction of the rotating shaft of the rotating structure in the rotating component 11 .

[0058] During the rotation process, the rotating component 11 pushes the transmission component 12 to move along the axial direction of the rotating component 11 through the push portion 111 and the first limiting portion 1211. The base component 13 is provided with a first positioning portion 131. One end of the transmission component 12 is movably inserted in the first positioning portion 131, which limits the displacement direction of the transmission component 12 and enhances the stability of the transmission component 12 along the axial movement of the rotating component 11, thereby improving the transmission stability and structural reliability of the transmission mechanism 1 and the user experience of electronic devices using the above-mentioned transmission mechanism 1.

[0059] In some embodiments, Figure 2 As shown, the transmission assembly 12 includes: a first limit member 121 and at least one transmission member 122. A first limit portion 1211 is provided at one end of the first limit member 121, and the other end of the first limit member 121 abuts against the transmission member 122. The transmission member 122 is inserted into the first limit member 121 and the rotating assembly 11, and one end of the transmission member 122 is movably inserted into the first positioning portion 131. The first limit portion 1211 and the position abutting against the transmission member 122 are arranged at both ends of the first limit member 121, so as to facilitate the axial movement of the transmission member 122 in the rotating assembly 11 by utilizing the abutment cooperation between the first limit portion 1211 and the abutting portion 111. The insertion of the transmission member 122 in the first limit member 121 and the rotating assembly 11 can avoid the structural interference between the transmission member 122 and the first limit member 121 and the rotating assembly 11.

[0060] In the above embodiment, the transmission member 122 may include: a transmission member body 1221, a first abutting portion 1223 and at least one positioning matching portion 1222. The first limiting member 121 is provided with a first assembly hole 1213, and the transmission member body 1221 is inserted into the first assembly hole 1213 and the rotating component 11 to achieve axial movement of the rotating component 11. One end of the first abutting portion 1223 is connected to one end of the transmission member body 1221, and the other end of the first abutting portion 1223 is connected to the positioning matching portion 1222, and the positioning matching portion 1222 is movably inserted into the first positioning portion 131. One end of the first abutting portion 1223 is abutted and matched with the first limiting member 121, and the side located at one end of the first abutting portion 1223 may abut against the first limiting member 121.

[0061] The transmission member body 1221 may be a rod-shaped structure, and the positioning matching portion 1222 may be a positioning column disposed at one end of the rod-shaped structure. The cross-sectional characteristic size of the positioning column may be greater than, less than or equal to the cross-sectional characteristic size of the rod-shaped structure, and the present disclosure does not limit this. The cross-sectional shape of the rod-shaped structure and the positioning column may be circular, rectangular, polygonal or irregular, etc. When the cross-sectional shape of the rod-shaped structure and the positioning column is circular, the cross-sectional characteristic size of the rod-shaped structure and the positioning column may be a circular diameter, and the cross-sectional diameter of the positioning column is the same as that of the rod-shaped structure. The first abutment portion 1223 may be a boss disposed between the positioning matching portion 1222 and the transmission member body 1221, one side of the boss is connected to the transmission member body 1221, and the other side of the boss is connected to the positioning matching portion 1222, and the side of the boss facing the first limiting member 121 abuts against the first limiting member 121. The first positioning portion 131 may be a positioning hole provided in the base assembly 13 and structurally matched with the positioning matching portion 1222 . The positioning column is movably inserted into the positioning hole to move along the axial direction of the rotating assembly 11 .

[0062] In the above embodiment, if Figure 3 As shown, a contact surface 1212 is provided on one side of the first stopper 121, a cam structure is provided on the other side of the first stopper 121, and a first assembly hole 1213 is also provided on the first stopper 121. The transmission member 122 passes through the first assembly hole 1213, one end of the first contact portion 1223 contacts and cooperates with the contact surface 1212, and the push portion 111 contacts and cooperates with the cam structure. That is, the first stopper 121 can be a cam plate, the cam structure and the contact surface 1212 are arranged on opposite sides of the cam plate, the push portion 111 of the rotating assembly 11 contacts and cooperates with the cam structure, and pushes the cam plate as a whole to move along the axial direction of the rotating assembly 11, and then the transmission member 122 is pushed to move along the axial direction of the rotating assembly 11 through the contact surface 1212 and the first contact portion 1223 of the transmission member 122.

[0063] In some embodiments, Figure 4As shown, the transmission assembly 12 also includes: a second limiter 123, a third limiter 124 and an elastic member 125. The push portion 111 includes: a first push portion 1111 and a second push portion 1112 arranged opposite to each other, the first push portion 1111 abuts against the first limiter 1211, and the second limiter 123 abuts against the second push portion 1112. The transmission member 122 includes a second limiter (not marked), the third limiter 124 is provided with a second assembly hole 1241, the transmission member 122 passes through the second assembly hole 1241, and the second limiter is engaged with the third limiter 124. The transmission member body 1221 is sequentially inserted into the second limiter 123, the elastic member 125 and the third limiter 124, and the two ends of the elastic member 125 elastically abut against the second limiter 123 and the third limiter 124, respectively.

[0064] In the above embodiment, the second limit part of the transmission member 122 is fixedly connected with the third limit part 124, and the two ends of the elastic member 125 are elastically abutted against the second limit part 123 and the third limit part 124 respectively, so that the system formed by the first limit part 121, the push part 111, the second limit part 123, the third limit part 124 and the transmission rod is elastically pressed. When the first push part 1111 pushes the first limit part 121, the first limit part 121 drives the transmission rod to move along the axial direction of the rotating assembly 11, and the second push part 1112 pushes the second limit part 123, so that the elastic member 125 located between the second limit part 123 and the third limit part 124 switches between the state of compression or tension deformation and the state of recovery deformation, providing elasticity for the movement of the above-mentioned entire system and improving the transmission operation feeling of the transmission mechanism 1.

[0065] Among them, the second limiting part can be a movable clamping part arranged on the transmission member 122. When the movable clamping part is in the first position, the transmission member 122 is inserted into the second assembly hole 1241. When the movable clamping part is rotated to the second position, the movable clamping part can be clamped and fixed with the third limiting member 124.

[0066] like Figure 5 As shown, the second stopper 123 may be a cam plate with a similar structure to the first stopper 121, and the cam plate has a cam structure 1231 and a push surface 1232 on opposite sides thereof. Figure 6 As shown, the third limiter 124 may be a limiter plate, the limiter plate is provided with a second assembly hole 1241, the second assembly hole 1241 on the transmission limiter plate of the transmission member 122 is clamped and fixed with one side of the limiter plate, and the elastic member 125 elastically abuts against the other side of the third limiter 124 and the abutting surface 1232 of the second limiter 123, respectively. The elastic member 125 may be a spring. The transmission assembly 12 may include one, two or more springs, and the transmission member 122 may be inserted into the spring.

[0067] In some embodiments, Figure 7 As shown, the transmission mechanism 1 also includes a floating plate assembly 16, a middle frame fixing member 15 and a track rod 14. The middle frame fixing member 15 is slidably matched with the floating plate assembly 16, and the second rotating matching portion 142 of the track rod 14 is rotationally connected with the third rotating matching portion 152 of the middle frame fixing frame. Among them, the floating plate assembly 16 cooperates with the screen of the electronic device to enable the screen to obtain a motion trajectory similar to that of the device body, thereby avoiding a gap between the screen and the device body during the bending process and causing damage. The middle frame fixing member 15 is fixedly connected to the middle frame of the device body to enable the device body to obtain an expected bending trajectory. The middle frame fixing member 15 rotates around the pin of the track rod 14 so that the middle frame fixing member 15 obtains a rotation trajectory.

[0068] The rotating assembly 11 includes a rotating member 112, such as Figure 7-Figure 11 As shown, the rotating member 112 includes: a main body 1123, a first sliding portion 1121 and a second sliding portion 1122. The push portion 111 is arranged at at least one end of the main body 1123, the first sliding portion 1121 is arranged at one side of the main body 1123, the first sliding portion 1121 is slidably matched with the floating plate assembly 16, the second sliding portion 1122 is arranged at one side of the main body 1123, and the second sliding portion 1122 is slidably matched with the middle frame fixing member 15. When the rotating member 112 rotates, the sliding matching portion 151 of the middle frame fixing member 15 is slidably matched with the second sliding portion 1122 of the rotating member 112 to obtain a sliding track. That is, the middle frame fixing member 15 includes both rotation relative to the pin shaft of the track rod 14 and sliding relative to the first sliding portion 1121 of the rotating member 112 during the movement.

[0069] One of the floating plate assembly 16 and the middle frame fixing member 15 may be provided with a track groove 153, and the other of the floating plate assembly 16 and the middle frame fixing member 15 may be provided with a slider 161, and the slider 161 slides in the track groove 153 to drive the floating plate assembly 16 to move with the movement of the middle frame fixing member 15.

[0070] In the above embodiment, the push portion 111 includes a cam structure provided at at least one end of the main body 1123, and the cam structure pushes and cooperates with the first limit portion 1211. The first limit portion 1211 may also be a cam structure provided on the first limit member 121, and the protrusions and grooves of the two cam structures push and cooperate alternately, so that the first limit member 121 generates an axial movement along the rotating component 11 as the rotating member 112 rotates. Wherein, when the push portion 111 includes a first push portion 1111 and a second push portion 1112, the first push portion 1111 pushes and cooperates with the first limit portion 1211, and the second push portion 1112 pushes and cooperates with the second limit member 123. Both the first push portion 1111 and the second push portion 1112 may be cam structures, and the second limit member 123 may also be provided with a cam structure 1231 on one side of the second push portion 1112.

[0071] In the above embodiment, the rotating assembly 11 may include two rotating members 112 symmetrically arranged relative to the center line of the transmission mechanism 1, and the two rotating members 112 cooperate in transmission. The main body 1123 includes a through hole 1123b arranged along the axial direction of the rotating member 112, and the transmission member 122 is movably inserted in the through hole 1123b, thereby avoiding structural interference between the rotating member 112 and the transmission member 122, saving the assembly space of the transmission member 122, and optimizing the structural layout of the transmission mechanism 1. Among them, the transmission assembly 12 may include two transmission members 122, and each transmission member 122 is respectively inserted in the through hole 1123b of the two rotating members 112. Through the transmission cooperation of the two rotating members 112 symmetrically arranged relative to the center line of the transmission mechanism 1, the two rotating members 112 can obtain synchronous rotation. The electronic device may include a first device body and a second device body, the middle frame of the first device body slidingly cooperates with the first sliding portion 1121 of one of the rotating parts 112, and the middle frame of the second device body slidingly cooperates with the first sliding portion 1121 of the other rotating part 112, so that there is rotational symmetry between the middle frame fixing parts 15 on both sides and between the first device body and the second body.

[0072] In some embodiments, Fig.12 As shown, the rotating assembly 11 can also include at least one transmission gear 18 meshing with the main body 1123, and the base assembly 13 also includes a second positioning portion 134. The transmission gear 18 includes a gear body 181 and a guide end 182 arranged on the gear body 181, and the guide end 182 is movably inserted in the second positioning portion 134, thereby avoiding axial positioning looseness and displacement of the transmission gear 18 during rotation, thereby avoiding the influence of the transmission gear 18 on the synchronous rotation of the two rotating members 112, and improving the rotation stability of the transmission gear 18.

[0073] The guide end 182 can be a positioning column arranged at one end of the gear shaft of the gear body 181, and the second positioning portion 134 can be a positioning hole arranged on the base assembly 13 and matching the structure of the guide end 182. The positioning column is movably inserted in the positioning hole to move along the axial direction of the rotating assembly 11.

[0074] In the above embodiment, if Fig.13 As shown, the base assembly 13 also includes at least one fourth limiting member 136, and the fourth limiting member 136 includes a first axial limiting portion 1361 and a first longitudinal limiting portion 1362, and the first axial limiting portion 1361 and the first longitudinal limiting portion 1362 are respectively limited with the gear body 181. Among them, the fourth limiting member 136 can be a limiting rib protruding from the base assembly 13 in a direction perpendicular to the rotation axis of the transmission gear 18, and the first axial limiting portion 1361 can be a portion where the limiting rib abuts against the end face of the gear body 181 perpendicular to the axial direction, so as to achieve axial limiting of the transmission gear 18. The first longitudinal limiting portion 1362 can be an arc-shaped structure portion where the limiting rib abuts against at least a portion of the circumferential surface of the gear body 181, so as to achieve longitudinal limiting through the abutment of the arc-shaped structure with the circumferential surface of the gear body 181. In one embodiment, the first axial limiting portion 1361 may be abutted against the end surface of the gear shoulder, and the first longitudinal limiting portion 1362 may be abutted against at least a portion of the circumferential surface of the gear shoulder.

[0075] In the above embodiment, at least one fourth limiting member 136 includes an auxiliary limiting structure, which includes a second axial limiting portion 1363 and a second longitudinal limiting portion 1364, and the second axial limiting portion 1363 and the second longitudinal limiting portion 1364 are respectively limited and matched with the rotating member 112. The second axial limiting portion 1363 can be a portion where the limiting rib abuts against the end surface of the rotating member 112 perpendicular to the axial direction, so as to achieve axial limiting of the rotating member 112. The second longitudinal limiting portion 1364 can be an arc-shaped structure portion where the limiting rib abuts against at least a portion of the circumferential surface of the rotating member 112, so as to achieve longitudinal limiting through the abutment of the arc-shaped structure with the circumferential surface of the rotating member 112. In one embodiment, the main body 1123 of the rotating member 112 can be provided with an annular groove 1123a, the second axial limiting portion 1363 can abut and cooperate with the side end surface of the annular groove 1123a of the rotating member 112, and the second longitudinal limiting portion 1364 can abut and cooperate with the bottom surface of the annular groove 1123a of the rotating member 112.

[0076] In some embodiments, Fig.12As shown, the base assembly 13 may include a first bracket 132, a second bracket 133, a cover plate (not marked) and a track bar 14. The first bracket 132 and the second bracket 133 are fixedly connected and enclose a first accommodation space. The first bracket 132 and / or the second bracket 133 located in the first accommodation space are provided with a rotating portion 135. The track bar 14 includes a first rotating matching portion 141 and a second rotating matching portion 142. The first rotating matching portion is accommodated in the accommodation space and is rotationally matched with the rotating portion 135. The second rotating matching portion 142 extends from the first bracket 132 and / or the second bracket 133 to the first accommodation space, and the second rotating matching portion 142 is rotationally connected to the middle frame fixing member 15. The transmission gear 18, the main body 1123, the first stopper 121, the second stopper 123, the third stopper 124, the fourth stopper 136, the elastic member 125 and at least a portion of the transmission member 122 are accommodated in the second accommodation space, and the first sliding portion 1121 and the second sliding portion 1122 extend out of the first accommodation space from the first bracket 132 and / or the cover plate. The fourth stopper 136 is disposed on the first bracket 132 and / or the cover plate.

[0077] In the above embodiment, the base frame assembly 13 may also include a fixing member 17, which is fixedly connected to the first bracket 132 and the cover plate respectively, one end of the transmission member 122 is movably inserted in the first positioning portion 131, and the other end of the transmission member 122 is movably inserted in the fixing member 17, and the first positioning portion 131 and the second positioning portion 134 are arranged on the second bracket 133.

[0078] It should be noted that the first bracket 132 may be a lower bracket of the base assembly 13, and the second bracket 133 may be an upper bracket of the base assembly 13. The first bracket 132 and the second bracket 133 may be fixedly connected by structures such as screws and buckles, and the first bracket 132, the cover plate and the fixing member 17 may be fixedly connected by structures such as screws and buckles. The first positioning portion 131 and the second positioning portion 134 may be arranged on the upper bracket. Alternatively, the first positioning portion 131 and the second positioning portion 134 may also be arranged on the lower bracket.

[0079] The present disclosure further proposes an electronic device, which includes a first body, a second body and the above-mentioned transmission mechanism 1, wherein the rotating assembly 11 includes at least two rotating members 112 for transmission cooperation, and the push portion 111 is arranged on the rotating member 112. During the rotation of the rotating member 112, the transmission assembly 12 is pushed to move along the axial direction of the rotating member 112 by the push portion 111 and the first limiting portion 1211. The transmission mechanism 1 also includes at least two middle frame fixing members 15 that are slidably matched with the rotating member 112, one middle frame fixing member 15 is fixedly connected to the first body, and the other middle frame fixing member 15 is fixedly connected to the second body.

[0080] Since the rotating component 11 pushes the transmission component 12 to move axially along the rotating component 11 through the push portion 111 and the first limiting portion 1211 during the rotation process, the base component 13 is provided with a first positioning portion 131, and one end of the transmission component 12 is movably inserted in the first positioning portion 131, which limits the displacement direction of the transmission component 12 and enhances the stability of the transmission component 12 along the axial movement of the rotating component 11, thereby improving the transmission stability and structural reliability of the transmission mechanism 1 and the user experience of electronic devices using the above-mentioned transmission mechanism 1.

[0081] It should be noted that the above-mentioned electronic devices can be mobile phones, wearable devices, tablet computers, televisions, advertising screens, vehicle-mounted terminals, medical terminals, etc., and the present disclosure does not limit this.

[0082] Those skilled in the art will readily come up with other embodiments of the present disclosure after considering the specification and practicing the technical solutions disclosed herein. The present disclosure is intended to cover any variations, uses or adaptations of the present disclosure, which follow the general principles of the present disclosure and include common knowledge or customary technical means in the art that are not disclosed in the present disclosure. The description and examples are to be regarded as exemplary only, and the true scope and spirit of the present disclosure are indicated by the following claims.

[0083] It should be understood that the present disclosure is not limited to the exact structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A transmission mechanism, characterized in that: The transmission mechanism comprises: A rotating assembly, the rotating assembly comprising at least one pushing portion; A transmission assembly, the transmission assembly comprising at least one first limiting portion, the first limiting portion abutting against the push portion, so that during the rotation of the rotating assembly, the transmission assembly is pushed by the push portion and the first limiting portion to move along the axial direction of the rotating assembly; A base frame assembly, wherein the base frame assembly is provided with a first positioning portion, and one end of the transmission assembly is movably inserted into the first positioning portion; The transmission assembly comprises: a first limiting member, a second limiting member, a third limiting member, an elastic member and at least one transmission member; one end of the first limiting member is provided with the first limiting portion; the transmission member is inserted into the first limiting member and the rotating assembly, and the other end of the first limiting member abuts against the transmission member, and one end of the transmission member is movably inserted into the first positioning portion; The push portion comprises: a first push portion and a second push portion which are arranged opposite to each other, the first push portion abuts against the first limit portion, the second limit member abuts against the second push portion, the transmission member comprises a second limit portion, the third limit member is provided with a second assembly hole, the transmission member passes through the second assembly hole, and the second limit portion is engaged with the third limit member; the transmission member comprises a transmission member body, the transmission member body is sequentially inserted into the second limit member, the elastic member and the third limit member, and the two ends of the elastic member are elastically abutted against the second limit member and the third limit member respectively; The transmission mechanism also includes a floating plate assembly and a middle frame fixing member that slidably cooperates with the floating plate assembly; the rotating assembly includes a rotating member, and the rotating member includes: a main body, a first sliding part, and a second sliding part; the push part is arranged at at least one end of the main body; the first sliding part is arranged at one side of the main body; the first sliding part slidably cooperates with the floating plate assembly; the second sliding part is arranged at one side of the main body, and the second sliding part slidably cooperates with the middle frame fixing member; The rotating assembly further comprises at least one transmission gear meshed with the main body, the base assembly further comprises a second positioning portion, the transmission gear comprises a gear body and a guide end arranged on the gear body, the guide end is movably inserted into the second positioning portion; the base assembly further comprises at least one fourth limiting member, the fourth limiting member comprises a first axial limiting portion and a first longitudinal limiting portion, the first axial limiting portion and the first longitudinal limiting portion are respectively limitedly matched with the gear body; The base frame assembly includes a first bracket, a second bracket, a cover plate and a track rod, the first bracket and the second bracket are fixedly connected and enclose a first accommodating space, and the first bracket and the cover plate are fixedly connected and enclose a second accommodating space; the first bracket and / or the second bracket located in the first accommodating space are provided with a rotating part, the track rod includes a first rotating matching part and a second rotating matching part, the first rotating matching part is accommodated in the accommodating space and rotatably matched with the rotating part; the second rotating matching part extends out of the first bracket and / or the second bracket to the first accommodating space, and the second rotating matching part is rotatably connected with the middle frame fixing part; the transmission gear, the main body, the first limit member, the second limit member, the third limit member, the fourth limit member, the elastic member and at least a part of the transmission member are accommodated in the second accommodating space, the first sliding part and the second sliding part extend out of the first bracket and / or the cover plate to the first accommodating space; the fourth limit member is arranged on the first bracket and / or the cover plate.

2. The transmission mechanism according to claim 1, characterized in that: The transmission member comprises: The transmission member body, the first limiting member is provided with a first assembly hole, and the transmission member body is inserted into the first assembly hole and the rotating assembly; A first abutting portion, one end of which is connected to one end of the transmission member body, and one end of the first abutting portion is abutted and matched with the first limiting member; At least one positioning matching portion, the other end of the first abutting portion is connected to the positioning matching portion, and the positioning matching portion is movably inserted in the first positioning portion.

3. The transmission mechanism according to claim 2, characterized in that: A contact surface is provided on one side of the first position limiting member, and a cam structure is provided on the other side of the first position limiting member. One end of the first contact portion is in contact with the contact surface, and the push portion is in contact with the cam structure.

4. The transmission mechanism according to claim 1, characterized in that: The pushing portion includes a cam structure disposed at at least one end of the main body, and the cam structure is pushed and matched with the first limiting portion.

5. The transmission mechanism according to claim 1, characterized in that: The rotating assembly comprises two rotating members symmetrically arranged relative to the center line of the transmission mechanism, and the two rotating members are in transmission cooperation; The main body comprises a through hole arranged along the axial direction of the rotating member, and the transmission member is movably inserted into the through hole.

6. The transmission mechanism according to claim 1, characterized in that: At least one fourth limiting member includes an auxiliary limiting structure, and the auxiliary limiting structure includes a second axial limiting portion and a second longitudinal limiting portion, and the second axial limiting portion and the second longitudinal limiting portion are respectively limited and matched with the rotating member.

7. The transmission mechanism according to claim 1, characterized in that: The base frame assembly further includes a fixing member, which is fixedly connected to the first bracket and the cover plate respectively; one end of the transmission member is movably inserted into the first positioning portion, and the other end of the transmission member is movably inserted into the fixing member; The first positioning portion and the second positioning portion are disposed on the second bracket.

8. An electronic device, characterized in that: The invention comprises a first main body, a second main body and a transmission mechanism according to any one of claims 1 to 7, wherein the rotating assembly comprises at least two rotating members for transmission cooperation, the push portion is arranged on the rotating member, and during the rotation of the rotating member, the push portion and the first limiting portion push the transmission assembly to move along the axial direction of the rotating member; The transmission mechanism further includes at least two middle frame fixing members that are slidably matched with the rotating member, one of the middle frame fixing members is fixedly connected to the first main body, and one of the middle frame fixing members is fixedly connected to the second main body.

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