Hinge mechanism

Abstract

The invention discloses a hinge mechanism which comprises a supporting base, a track rod, a swing arm, a shell and a pin shaft. One end of the track rod is mounted on the supporting seat, and the track rod can rotate around a first direction relative to the supporting seat; one end of the swing arm is mounted on the supporting seat, and the swing arm can rotate around a first direction relative to the supporting seat; a clamping groove is formed in the shell and matched with the end, away from the supporting base, of the swing arm in an inserted mode. The pin shaft is detachably installed on the shell, the track rod is rotationally connected with the shell through the pin shaft, and an angle is formed between the axial direction of the pin shaft and the extending direction of the clamping groove. In the embodiment, the axial direction of the pin shaft is perpendicular to the extending direction of the clamping groove. According to the hinge structure, the relative positions of the shell, the swing arm and the track rod are limited through the insertion matching of the swing arm and the shell and the rotary connection of the pin shaft and the track rod, so that the shell, the swing arm and the track rod are relatively fixed after being assembled, and compared with a screw connection mode, the part cost can be reduced, and the assembly efficiency can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic equipment, and in particular to a hinge mechanism. Background Art

[0002] At present, foldable terminal devices (such as foldable mobile phones, foldable tablet computers, etc.) often require the use of hinge mechanisms. In existing hinge mechanisms, the housing connected to the middle frame of the terminal device is usually connected to the swing arm / track bar of the hinge mechanism by screws. This connection method is not conducive to improving assembly efficiency and has a high cost of parts. Therefore, it is necessary to design a hinge mechanism with higher assembly efficiency and lower part cost. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a hinge mechanism with higher assembly efficiency and lower parts cost.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: a hinge mechanism, comprising: Support seat; A track bar, one end of which is mounted on the support base, and the track bar is rotatable relative to the support base around a first direction; A swing arm, one end of which is mounted on the support seat, and the swing arm is rotatable relative to the support seat around the first direction; A housing, wherein a slot is provided on the housing, and the slot is plug-fitted with an end of the swing arm away from the support seat; A pin shaft is detachably mounted on the shell, the track rod is rotatably connected to the shell via the pin shaft, and the axial direction of the pin shaft is arranged at an angle to the extension direction of the slot.

[0005] Furthermore, the axial direction of the pin shaft is perpendicular to the extending direction of the slot.

[0006] Furthermore, it also includes a limit cover plate, and the shell is also provided with a connected limit groove and a plug-in groove, the limit cover plate is plugged into the plug-in groove, and the shell is provided with a mounting groove, the limit cover plate and the mounting groove are combined to form a mounting hole, one end of the pin shaft is arranged in the limit groove, and the other end of the pin shaft is arranged in the mounting hole.

[0007] Furthermore, the limiting cover plate is provided with a hook portion, and the shell is provided with a limiting portion that is snap-fitted with the hook portion.

[0008] Furthermore, the contact surfaces of the limiting cover plate and the shell are respectively provided with protrusions and recesses matching with the protrusions.

[0009] Furthermore, the support seat includes a support plate and a large cover plate, the support plate and the large cover plate are detachably connected, the support plate and the large cover plate together form an arc-shaped guide groove, and the end of the track rod is provided with an arc-shaped connecting plate that cooperates with the arc-shaped guide groove.

[0010] Furthermore, the contact surfaces of the support plate and the large cover plate are respectively provided with positioning bosses and positioning holes matched with the positioning bosses.

[0011] Furthermore, it also includes a shaft rod, and the end of the swing arm is rotatably connected to the support seat through the shaft rod.

[0012] Furthermore, it also includes a sliding plate and an elastic member, wherein the sliding plate is sleeved on the shaft and can slide along the axial direction of the shaft, the swing arm is provided with a concave-convex structure, and the sliding plate is provided with a matching structure that matches the concave-convex structure, and the elastic member is used to drive the sliding plate to move in a direction close to the swing arm.

[0013] Furthermore, the elastic member is a spring, a spring sheet or a spring washer.

[0014] The beneficial effects of the present invention are as follows: the hinge structure utilizes the plug-in cooperation between the swing arm and the shell and the rotational connection between the pin shaft and the track bar to limit the relative positions of the shell, the swing arm and the track bar, so that the shell, the swing arm and the track bar are relatively fixed after assembly. Compared with the screw connection method, it can reduce the cost of parts and improve the assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the overall structure of the hinge structure of the first embodiment of the present invention; Figure 2 for Figure 1 A magnified picture of the details of part A; Figure 3 A top view of the hinge structure of the first embodiment of the present invention; Figure 4 for Figure 3 Schematic diagram of the BB structure; Figure 5 It is a partial structural exploded view of the hinge structure of the first embodiment of the present invention; Figure 6 This is a schematic structural diagram of a limiting cover plate of a hinge structure according to Embodiment 1 of the present invention.

[0016] Description of labels: 1. Support seat; 11. Support plate; 111. Positioning boss; 12. Large cover plate; 121. Positioning hole; 13. Arc guide groove; 14. Transmission gear; 2. Track rod; 21. Arc connecting plate; 3. Swing arm; 31. Concave-convex structure; 4. Shell; 41. Card slot; 42. Limiting slot; 43. Inserting slot; 44. Mounting slot; 45. Limiting portion; 46. Concave pit; 5. Pin; 6. Position limiting cover plate; 61. Hook; 62. Protrusion; 7. Axle rod; 8. Sliding plate; 81. Matching structure; 9. Elastic parts. DETAILED DESCRIPTION

[0017] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in combination with the implementation modes and the accompanying drawings.

[0018] Please refer to Figures 1 to 6 , a hinge mechanism, comprising: Support seat 1; A track bar 2, one end of which is mounted on the support base 1, and the track bar 2 is rotatable relative to the support base 1 around a first direction; A swing arm 3, one end of which is mounted on the support base 1, and the swing arm 3 is rotatable relative to the support base 1 around the first direction; A housing 4, wherein a slot 41 is provided on the housing 4, and the slot 41 is plug-fitted with an end of the swing arm 3 away from the support seat 1; The pin shaft 5 is detachably mounted on the housing 4 , and the track rod 2 is rotatably connected to the housing 4 via the pin shaft 5 . The axial direction of the pin shaft 5 is set at an angle to the extending direction of the slot 41 .

[0019] From the above description, it can be seen that the beneficial effects of the present invention are: the hinge structure utilizes the plug-in cooperation between the swing arm 3 and the shell 4 and the rotational connection between the pin shaft 5 and the track bar 2 to limit the relative positions of the shell 4, the swing arm 3 and the track bar 2, so that the shell 4, the swing arm 3 and the track bar 2 are relatively fixed after assembly. Compared with the screw connection method, it can reduce the cost of parts and improve the assembly efficiency.

[0020] Furthermore, the axial direction of the pin shaft 5 is perpendicular to the extending direction of the slot 41 .

[0021] Furthermore, it also includes a limit cover plate 6, and the shell 4 is also provided with a connected limit groove 42 and a plug-in groove 43, the limit cover plate 6 is plugged into the plug-in groove 43, and the shell 4 is provided with a mounting groove 44, the limit cover plate 6 and the mounting groove 44 are surrounded to form a mounting hole, one end of the pin shaft 5 is arranged in the limit groove 42, and the other end of the pin shaft 5 is arranged in the mounting hole.

[0022] It can be seen from the above description that the installation method of the pin shaft 5 is simple and convenient, wherein the limiting groove 42 is used to limit the axial movable stroke of the pin shaft 5, and the limiting cover plate 6 is used to limit the radial movable freedom of the pin shaft 5.

[0023] Furthermore, the limiting cover plate 6 is provided with a hook portion 61 , and the housing 4 is provided with a limiting portion 45 that is snap-fitted with the hook portion 61 .

[0024] It can be known from the above description that the engagement between the hook portion 61 and the limiting portion 45 can prevent the limiting cover plate 6 from accidentally withdrawing from the insertion slot 43 .

[0025] Furthermore, the contact surfaces of the limiting cover plate 6 and the housing 4 are respectively provided with a convex point 62 and a concave pit 46 matched with the convex point 62 .

[0026] It can be seen from the above description that the cooperation between the protrusion 62 and the recess 46 can prevent the limiting cover plate 6 from accidentally withdrawing from the insertion slot 43 .

[0027] Furthermore, the support seat 1 includes a support plate 11 and a large cover plate 12, and the support plate 11 and the large cover plate 12 are detachably connected. The support plate 11 and the large cover plate 12 together form an arc-shaped guide groove 13, and the end of the track rod 2 is provided with an arc-shaped connecting plate 21 that cooperates with the arc-shaped guide groove 13.

[0028] It can be known from the above description that the arc-shaped guide groove 13 and the arc-shaped connecting plate 21 cooperate to enable the track rod 2 to rotate relative to the support base 1 .

[0029] Furthermore, a positioning boss 111 and a positioning hole 121 matched with the positioning boss 111 are respectively provided on the contact surfaces of the support plate 11 and the large cover plate 12 .

[0030] It can be seen from the above description that the cooperation between the positioning boss 111 and the positioning hole 121 can limit the relative position of the support plate 11 and the large cover plate 12 , which is beneficial to improving the assembly accuracy and efficiency of the support plate 11 and the large cover plate 12 .

[0031] Furthermore, it also includes a shaft rod 7, and the end of the swing arm 3 is rotatably connected to the support seat 1 through the shaft rod 7.

[0032] Furthermore, it also includes a sliding plate 8 and an elastic member 9, the sliding plate 8 is sleeved on the shaft rod 7 and can slide along the axial direction of the shaft rod 7, the swing arm 3 is provided with a concave-convex structure 31, and the sliding plate 8 is provided with a matching structure 81 that matches the concave-convex structure 31, and the elastic member 9 is used to drive the sliding plate 8 to move in a direction close to the swing arm 3.

[0033] It can be seen from the above description that the elastic member 9, the matching structure 81 and the concave-convex structure 31 cause the swing arm 3 to be subjected to resistance when rotating relative to the support base 1, which helps to prevent the hinge mechanism from accidentally unfolding or folding.

[0034] Furthermore, the elastic member 9 is a spring, a spring sheet or a spring washer.

[0035] It can be seen from the above description that the type of the elastic member 9 can be selected according to actual use requirements or production conditions.

[0036] Please refer to Figures 1 to 6 , Embodiment 1 of the present invention is: a hinge mechanism, , applied to a foldable terminal device.

[0037] The hinge mechanism includes a support base 1, a track bar 2, a swing arm 3, a shell 4 and a pin 5, and the shell 4 is used to connect with the middle frame of the terminal device. One end of the track bar 2 is installed on the support base 1, and the track bar 2 can rotate around a first direction relative to the support base 1; one end of the swing arm 3 is installed on the support base 1, and the swing arm 3 can rotate around a first direction relative to the support base 1; a card slot 41 is provided on the shell 4, and the card slot 41 is plugged and matched with the end of the swing arm 3 away from the support base 1; the pin 5 is detachably installed on the shell 4, and the track bar 2 is rotatably connected to the shell 4 through the pin 5, and the axial direction of the pin 5 is set at an angle to the extension direction of the card slot 41. In this embodiment, the axial direction of the pin 5 is perpendicular to the extension direction of the card slot 41.

[0038] Specifically, Figure 1 and Figure 5 As shown, the hinge mechanism also includes a limit cover plate 6, and the housing 4 is also provided with a communicating limit groove 42 and a plug-in groove 43, the limit cover plate 6 is plugged into the plug-in groove 43, and the housing 4 is provided with a mounting groove 44, the limit cover plate 6 and the mounting groove 44 are surrounded to form a mounting hole, one end of the pin 5 is arranged in the limit groove 42, and the other end of the pin 5 is arranged in the mounting hole. Among them, the limit groove 42 is used to limit the movable stroke of the pin 5 in the axial direction, and the limit cover plate 6 is used to limit the freedom of movement of the pin 5 in the radial direction. In this embodiment, the number of the track rod 2, the swing arm 3, the housing 4, the pin 5 and the limit cover plate 6 are all two, the track rod 2, the swing arm 3, the housing 4, the pin 5 and the limit cover plate 6 are arranged one by one, and the two track rods 2 and the two swing arms 3 are symmetrically arranged on both sides of the support seat 1.

[0039] like Figure 5 and Figure 6 As shown, in order to prevent the limiting cover plate 6 from accidentally withdrawing from the plug-in slot 43 , a hook portion 61 is provided on the limiting cover plate 6 , and a limiting portion 45 that is snap-fitted with the hook portion 61 is provided on the housing 4 .

[0040] like Figure 5 and Figure 6As shown, in order to prevent the limiting cover plate 6 from accidentally exiting the plug-in slot 43, the contact surfaces of the limiting cover plate 6 and the housing 4 are respectively provided with a convex point 62 and a concave pit 46 that cooperates with the convex point 62. In this embodiment, the convex point 62 is provided on the limiting cover plate 6, the number of the convex points 62 is multiple, and the concave pit 46 is provided on the housing 4. In other embodiments, it is also feasible to provide the convex point 62 on the housing 4 and the concave pit 46 on the limiting cover plate 6.

[0041] like Figure 1 and Figure 4 As shown, the support base 1 includes a support plate 11 and a large cover plate 12, the support plate 11 and the large cover plate 12 are detachably connected, the support plate 11 and the large cover plate 12 are surrounded to form an arc-shaped guide groove 13, and the end of the track rod 2 is provided with an arc-shaped connecting plate 21 that cooperates with the arc-shaped guide groove 13. In this embodiment, the support plate 11 and the large cover plate 12 are connected by screws.

[0042] like Figure 1 As shown, the contact surfaces of the support plate 11 and the large cover plate 12 are respectively provided with a positioning boss 111 and a positioning hole 121 matched with the positioning boss 111. The positioning boss 111 and the positioning hole 121 cooperate to limit the relative position of the support plate 11 and the large cover plate 12, which is conducive to improving the assembly accuracy and assembly efficiency of the support plate 11 and the large cover plate 12.

[0043] like Figure 2 As shown, the hinge mechanism further includes a shaft 7, and the end of the swing arm 3 is rotatably connected to the support base 1 through the shaft 7. Specifically, the swing arm 3 is provided with a gear portion, and the support base 1 is provided with two transmission gears 14, the two transmission gears 14 are meshed with each other, and the two transmission gears 14 are respectively meshed with the gear portions of the two swing arms 3.

[0044] like Figure 2 As shown, the hinge mechanism further includes a sliding plate 8 and an elastic member 9. The sliding plate 8 is sleeved on the shaft rod 7 and can slide along the axial direction of the shaft rod 7. The swing arm 3 is provided with a concave-convex structure 31. The sliding plate 8 is provided with a matching structure 81 that matches the concave-convex structure 31. The elastic member 9 is used to drive the sliding plate 8 to move in a direction close to the swing arm 3. Specifically, the shaft rods 7 and the swing arms 3 are arranged in a one-to-one correspondence. The sliding plate 8 is provided with two through holes that match the shaft rods 7. The sliding plate 8 is sleeved on the two shaft rods 7 through the through holes. The concave-convex structure 31 is composed of a plurality of latch teeth uniformly distributed around the axial direction of the shaft rod 7, and the matching structure 81 is composed of a plurality of latch teeth uniformly distributed around the axial direction of the through holes on the sliding plate 8. The elastic member 9 is a spring, and the elastic member 9 is sleeved on the shaft rod 7. In other embodiments, the elastic member 9 can be set as a spring sheet or a spring washer.

[0045] To sum up, the hinge structure provided by the present invention utilizes the plug-in cooperation between the swing arm and the shell and the rotational connection between the pin shaft and the track bar to limit the relative positions of the shell, the swing arm and the track bar, so that the shell, the swing arm and the track bar are relatively fixed after assembly. Compared with the screw connection method, it can reduce the cost of parts and improve assembly efficiency.

[0046] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention's specification and drawings, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A hinge mechanism, characterized in that: include: Support seat; A track bar, one end of which is mounted on the support base, and the track bar is rotatable relative to the support base around a first direction; A swing arm, one end of which is mounted on the support seat, and the swing arm is rotatable relative to the support seat around the first direction; A housing, wherein a slot is provided on the housing, and the slot is plug-fitted with an end of the swing arm away from the support seat; A pin shaft is detachably mounted on the shell, the track rod is rotatably connected to the shell via the pin shaft, and the axial direction of the pin shaft is arranged at an angle to the extension direction of the slot.

2. A hinge mechanism according to claim 1, characterized in that: The axial direction of the pin shaft is perpendicular to the extending direction of the slot.

3. A hinge mechanism according to claim 1, characterized in that: It also includes a limit cover plate, and the shell is also provided with a connected limit groove and a plug-in groove, the limit cover plate is plugged into the plug-in groove, and the shell is provided with a mounting groove, the limit cover plate and the mounting groove are combined to form a mounting hole, one end of the pin shaft is arranged in the limit groove, and the other end of the pin shaft is arranged in the mounting hole.

4. A hinge mechanism according to claim 3, characterized in that: The limiting cover plate is provided with a hook portion, and the housing is provided with a limiting portion that is engaged with the hook portion.

5. A hinge mechanism according to claim 3, characterized in that: The contact surfaces of the limiting cover plate and the shell are respectively provided with convex points and concave pits matched with the convex points.

6. A hinge mechanism according to claim 1, characterized in that: The support seat comprises a support plate and a large cover plate, the support plate and the large cover plate are detachably connected, the support plate and the large cover plate are combined to form an arc-shaped guide groove, and the end of the track rod is provided with an arc-shaped connecting plate matched with the arc-shaped guide groove.

7. A hinge mechanism according to claim 6, characterized in that: Positioning bosses and positioning holes matched with the positioning bosses are respectively provided on the contact surfaces of the support plate and the large cover plate.

8. The hinge mechanism according to claim 1, characterized in that: It also includes a shaft rod, and the end of the swing arm is rotatably connected to the support seat through the shaft rod.

9. A hinge mechanism according to claim 8, characterized in that: It also includes a sliding plate and an elastic member, wherein the sliding plate is sleeved on the shaft and can slide along the axial direction of the shaft, the swing arm is provided with a concave-convex structure, and the sliding plate is provided with a matching structure that matches the concave-convex structure, and the elastic member is used to drive the sliding plate to move in a direction close to the swing arm.

10. A hinge mechanism according to claim 9, characterized in that: The elastic member is a spring, a spring sheet or an elastic washer.

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