Motorcycle seat hinge structure

Abstract

The application discloses a motorcycle seat cushion hinge structure, which comprises a hinge shaft, a torsional spring, an upper mounting plate, a lower mounting plate, a hook, an extrusion sheet and a groove plate, the upper mounting plate is rotationally connected with the lower mounting plate through the hinge shaft, the upper mounting plate is fixedly connected with the bottom plate of a seat cushion, the lower mounting plate is fixedly connected with a seat box, the torsional spring is sleeved on the hinge shaft, the upper end of the hook is fixedly connected with the upper mounting plate, the extrusion sheet is arranged on the outer side of the hook and is fixedly connected with the seat box, the groove plate is rotationally connected with the hinge shaft and is located above the lower mounting plate, one end of the torsional spring abuts against the lower surface of the upper mounting plate, and the other end of the torsional spring abuts against the upper surface of the groove plate, positioning grooves are arranged on the left side and the right side of the groove plate, and the hook is buckled into the positioning grooves by the extrusion sheet when the hinge mechanism is closed. The application can make the elastic force of the torsional spring not continuously act on the seat cushion bottom plate, and fundamentally avoids the phenomenon that the helmet box is filled with water due to the deformation of the seat cushion bottom plate.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of motorcycle technology, and particularly relates to a hinge structure of a motorcycle seat cushion. BACKGROUND

[0002] At present, most of the motorcycle seat cushions lack a structure for self-locking after the hinge of the seat cushion is closed, resulting in the following defects of the closed seat cushion: since the hinge of the seat cushion is in a compressed state, the elastic force of the torsion spring continuously acts on the bottom plate of the seat cushion, causing deformation of the bottom plate, which is particularly obvious on large-displacement pedal motorcycles (the seat cushion is heavier, and a larger torsion stiffness of the torsion spring is required), and ultimately causes poor sealing between the seat cushion and the helmet box, and water enters the helmet box when washing the car or raining. SUMMARY

[0003] The present application aims to provide a hinge structure of a motorcycle seat cushion, which can prevent the elastic force of the torsion spring from continuously acting on the bottom plate of the seat cushion, and fundamentally avoid the phenomenon of water entering the helmet box caused by deformation of the bottom plate of the seat cushion.

[0004] In order to solve the above technical problems, the present application adopts the following technical scheme:

[0005] A hinge structure of a motorcycle seat cushion, comprising a seat box, a seat cushion and a hinge mechanism, the hinge mechanism comprising a hinge shaft, a torsion spring, an upper mounting plate, a lower mounting plate and a self-locking assembly, the upper mounting plate and the lower mounting plate being rotationally connected by the hinge shaft, the upper mounting plate being fixedly connected with the bottom plate of the seat cushion, the lower mounting plate being fixedly connected with the seat box, the torsion spring being sleeved on the hinge shaft; the self-locking assembly comprising two hooks, two extrusion pieces and a groove plate, the two hooks being symmetrically arranged on the left and right sides of the upper mounting plate, the upper end of the hook being fixedly connected with the upper mounting plate; the two extrusion pieces being symmetrically arranged on the outer side of the two hooks and being fixedly connected with the seat box; the groove plate being rotationally connected with the hinge shaft and being located above the lower mounting plate, one end of the torsion spring being abutted against the lower surface of the upper mounting plate, the other end of the torsion spring being abutted against the upper surface of the groove plate; the left and right sides of the groove plate are each provided with a positioning groove capable of being hooked and buckled with the lower end of the hook; when the hinge mechanism is closed, the hooks are buckled into the positioning grooves by the extrusion of the extrusion pieces.

[0006] As a preferred scheme of the present application, when the hinge mechanism is closed, the elastic force of the torsion spring is equal to the sum of the forces acting on the two hooks by the torsion spring.

[0007] As a preferred scheme of the present application, the middle part of the extruded sheet is provided with an inclined sliding surface part and a vertical sliding surface part which can abut against the lower end of the hook away from the hook part, the inclined sliding surface part is arranged downwardly inclined towards the hook side, and the vertical sliding surface part is connected to the lower end of the inclined sliding surface part.

[0008] As a preferred scheme of the present application, the hook is in L-shaped structure, and the contact part of the hook with the inclined sliding surface part is a circular arc surface.

[0009] As a preferred scheme of the present application, the hook is an elastic sheet metal made of spring steel.

[0010] As a preferred scheme of the present application, the extruded sheet is an elastic sheet metal made of spring steel.

[0011] As a preferred scheme of the present application, the elastic modulus of the extruded sheet is greater than that of the hook.

[0012] As a preferred scheme of the present application, the rear end of the hinge mechanism is provided with a hand clamping prevention partition plate for preventing hands from entering the hinge mechanism.

[0013] As a preferred scheme of the present application, the hand clamping prevention partition plate is in U-shaped structure, and the two side plates of the hand clamping prevention partition plate are connected with the hinge shafts respectively.

[0014] The motorcycle seat cover hinge structure provided by the present application has the following beneficial effects compared with the prior art:

[0015] When the seat cover is closed around the hinge shaft, the torsion spring is compressed between the upper mounting plate and the groove plate, at this time the groove plate abuts against the lower mounting plate; and the hook is elastically deformed by being pressed by the extruded sheet during the downward rotation of the upper mounting plate, and is buckled into the positioning groove, so that the hinge mechanism is automatically locked after the seat cover is closed, thereby blocking the transmission of elastic force of the torsion spring to the seat cover bottom plate, avoiding the deformation of the seat cover bottom plate, and eliminating the water entry into the helmet box due to poor sealing. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings of the embodiments will be briefly introduced below.

[0017] Figure 1 is a schematic view of the motorcycle seat cover hinge structure provided by the present application;

[0018] Figure 2 is a schematic view of the hinge mechanism in an open state;

[0019] Figure 3 is a schematic view of the hinge mechanism in a closed state;

[0020] Figure 4is a schematic view of a hinge mechanism locking process;

[0021] Figure 5 is a structural schematic view of a hand clamping prevention partition.

[0022] Marked in the figure:

[0023] Seat box 1; seat cushion 2; hinge mechanism 3; hinge shaft 31; torsion spring 32; upper mounting plate 33, lower mounting plate 34; hook 35; hook portion 351; extrusion piece 36; inclined sliding surface portion 361; vertical sliding surface portion 362; groove plate 37; positioning groove 371; hand clamping prevention partition 38. DETAILED DESCRIPTION

[0024] The embodiments of the present application are described in detail below with reference to the accompanying drawings. In the drawings, like reference numerals indicate like elements or elements having the same or similar functions throughout the several views. The embodiments described below are exemplary only, and are not to be construed as limiting the present application.

[0025] In the description of the present application, it should be understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0026] In the description of the present application, the meaning of several is one or more, and the meaning of multiple is two or more. Greater than, less than, more than, etc. are understood as not including the number, and above, below, etc. are understood as including the number. If it is described as first, second, etc. only for the purpose of distinguishing technical features, it cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the order of technical features indicated.

[0027] In the description of the present application, unless otherwise explicitly limited, the words such as setting, mounting, connecting, etc. should be broadly understood, and the person skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical solution.

[0028] As Figures 1 to 5As shown, the motorcycle seat cushion hinge structure of the embodiment of the present application comprises a seat box 1, a seat cushion 2 and a hinge mechanism 3, the hinge mechanism 3 comprises a hinge shaft 31, a torsional spring 32, an upper mounting plate 33, a lower mounting plate 34 and a self-locking assembly, the upper mounting plate 33 and the lower mounting plate 34 are rotationally connected through the hinge shaft 31, the upper mounting plate 33 is fixedly connected with the bottom plate of the seat cushion 2, the lower mounting plate 34 is fixedly connected with the seat box 1, the torsional spring 32 is sleeved on the hinge shaft 31; the self-locking assembly comprises two hooks 35, two extrusion pieces 36 and a groove plate 37, the two hooks 35 are symmetrically arranged on the left and right sides of the upper mounting plate 33, the upper end of the hook 35 is fixedly connected with the upper mounting plate 33; the two extrusion pieces 36 are symmetrically arranged on the outer side of the two hooks 35 and are fixedly connected with the seat box 1; the groove plate 37 is rotationally connected with the hinge shaft 31 and is located above the lower mounting plate 34, one end of the torsional spring 32 is abutted against the lower surface of the upper mounting plate 33, the other end of the torsional spring 32 is abutted against the upper surface of the groove plate 37; the left and right sides of the groove plate 37 are each provided with a positioning groove 371 capable of buckling with the lower end hook portion 351 of the hook 35; when the hinge mechanism 3 is closed, the hook 35 is buckled into the positioning groove 371 by being extruded by the extrusion piece 36. Preferably, when the hinge mechanism 3 is closed, the elastic force of the torsional spring 32 is equal to the sum of the forces acting on the two hooks 35 by the torsional spring 32.

[0029] When the seat cushion 2 is closed to the seat box 1 around the hinge shaft 31, the torsional spring 32 is compressed between the upper mounting plate 33 and the groove plate 37, at this time the groove plate 37 is abutted against the lower mounting plate 34; while the hook 35 is elastically deformed by being extruded by the extrusion piece 36 during the downward rotation of the upper mounting plate 33, and is buckled into the positioning groove 371, so that the hinge mechanism 3 is automatically locked after the seat cushion 2 is closed, thereby blocking the elastic force of the torsional spring 32 from being transmitted to the bottom plate of the seat cushion 2, avoiding the deformation of the bottom plate of the seat cushion 2, and eliminating the phenomenon of water entering the helmet box due to poor sealing.

[0030] When the seat cushion 2 is opened upward around the hinge shaft 31, since the hinge mechanism 3 is still in the self-locking state at the moment of opening, the self-locking assembly composed of the upper mounting plate 33, the torsional spring 32, the groove plate 37 and the hook 35 will rotate a certain angle (for example: 5 degrees) upward relative to the lower mounting plate 34, during which the hook 35 is reset under the action of its own elasticity, and sequentially separates from the positioning groove 371 and the extrusion piece 36, so that the hinge mechanism 3 is automatically unlocked after the seat cushion 2 is opened by a small angle, thereby releasing the elastic force of the torsional spring 32, and making the seat cushion 2 automatically open under the action of the torsional spring 32. In addition, after the seat cushion 2 is opened, the elastic force of the torsional spring 32 can also support the seat cushion 2, effectively preventing the seat cushion 2 from accidentally falling and hurting people.

[0031] Exemplarily, the middle part of the extrusion piece 36 is provided with an inclined sliding surface part 361 and a vertical sliding surface part 362, which can abut against the lower end of the hook 35 away from the hook part 351, the inclined sliding surface part 361 is arranged downwardly inclined towards the hook 35, and the vertical sliding surface part 362 is connected to the lower end of the inclined sliding surface part 361. When the seat cushion 2 is folded towards the seat box 1 around the hinge shaft 31, the lower end of the hook 35 abuts against the inclined sliding surface part 361 during the downward rotation of the hook 35 along the upper mounting plate 33, and the inclined sliding surface part 361 extrudes the hook 35 to gradually approach the positioning groove 371 as the hook 35 moves downwardly. When the hook 35 moves downwardly from the inclined sliding surface part 361 to abut against the vertical sliding surface part 362, the hook part 351 of the hook 35 is just buckled into the positioning groove 371. Preferably, the hook 35 is in L-shaped structure, and the contact part between the hook 35 and the inclined sliding surface part 361 is in arc surface, so as to reduce the friction and abrasion between the hook 35 and the extrusion piece 36.

[0032] Exemplarily, the hook 35 is made of spring steel, so that the hook 35 has good elastic characteristics. The hook 35 gradually separates from the extrusion of the extrusion piece 36 and gradually resets under the action of its own elasticity, which ensures the reliability during the unlocking process of the self-locking assembly.

[0033] Exemplarily, the extrusion piece 36 is made of spring steel, so that the hook 35 has certain elastic characteristics. On the one hand, the elastic characteristics can slow down the impact of the hook 35 on the extrusion piece 36 during the downward rotation of the hook 35, reduce the abrasion, and improve the service life. On the other hand, the elastic characteristics can add a pre-tightening force to the hook 35 to prevent the hook 35 from separating from the positioning groove 371, so as to better adapt to the working environment of high-frequency vibration.

[0034] Exemplarily, the elastic modulus of the extrusion piece 36 is greater than the elastic modulus of the hook 35, so that the elastic deformation amount of the hook 35 is greater than the elastic deformation amount of the extrusion piece 36. The hook 35 is smoothly buckled into the positioning groove 371 under the extrusion of the extrusion piece 36, which ensures the reliability during the locking process of the self-locking assembly.

[0035] Exemplarily, in order to prevent the hand from being inserted into the hinge of the seat cushion 2 when the maintenance personnel picks up the helmet box for maintenance, the anti-pinch hand partition plate 38 is arranged at the rear end of the hinge mechanism 3 to prevent the hand from being inserted into the hinge mechanism 3. Preferably, the anti-pinch hand partition plate 38 is in U-shaped structure, and the two side plates of the anti-pinch hand partition plate 38 are respectively connected with the hinge shaft 31.

[0036] The above merely describes the preferred embodiments of the present application, and it should be pointed out that, for those skilled in the art, several improvements and replacements can be made without departing from the technical principles of the present application, and these improvements and replacements should also be considered as the protection scope of the present application.

Claims

1. A motorcycle seat hinge structure, comprising a seat box, a seat cushion, and a hinge mechanism, wherein the hinge mechanism comprises a hinge shaft, a torsion spring, an upper mounting plate, and a lower mounting plate, wherein the upper mounting plate and the lower mounting plate are rotatably connected via the hinge shaft, the upper mounting plate is fixedly connected to the bottom plate of the seat cushion, the lower mounting plate is fixedly connected to the seat box, and the torsion spring is sleeved on the hinge shaft; characterized in that: The hinge mechanism also includes a self-locking component, which includes two hooks, two extrusion sheets and a groove plate, the two hooks are symmetrically arranged on the left and right sides of the upper mounting plate, and the upper ends of the hooks are fixedly connected to the upper mounting plate; the two extrusion sheets are symmetrically arranged on the outsides of the two hooks and fixedly connected to the seat box; the groove plate is rotatably connected to the hinge shaft and is located above the lower mounting plate, the torsion bar at one end of the torsion spring is against the lower surface of the upper mounting plate, and the torsion bar at the other end of the torsion spring is against the upper surface of the groove plate; the left and right sides of the groove plate are provided with positioning grooves that can be buckled with the lower end hook of the hook; when the hinge mechanism is closed, the hook is squeezed and buckled into the positioning groove by the extrusion sheet.

2. A motorcycle seat hinge structure according to claim 1, characterized in that: When the hinge mechanism is closed, the elastic force of the torsion spring is equal to the sum of the forces acting on the two hooks by the torsion spring.

3. The motorcycle seat hinge structure according to claim 1, characterized in that: The middle part of the extrusion sheet is provided with an inclined sliding portion and a vertical sliding portion that can abut against the lower end of the hook away from its hook side. The inclined sliding portion is tilted downward toward the hook side, and the vertical sliding portion is connected to the lower end of the inclined sliding portion.

4. A motorcycle seat hinge structure according to claim 3, characterized in that: The hook is in an L-shaped structure, and the contact portion between the hook and the inclined sliding portion is an arc surface.

5. The motorcycle seat hinge structure according to claim 1, characterized in that: The hook is an elastic sheet metal made of spring steel.

6. A motorcycle seat hinge structure according to claim 5, characterized in that: The extrusion sheet is an elastic sheet metal made of spring steel.

7. A motorcycle seat hinge structure according to claim 6, characterized in that: The elastic modulus of the extruded sheet is greater than the elastic modulus of the hook.

8. A motorcycle seat hinge structure according to any one of claims 1 to 7, characterized in that: The rear end of the hinge mechanism is provided with an anti-hand pinching partition for preventing people's hands from reaching into the hinge mechanism.

9. The motorcycle seat hinge structure according to claim 8, characterized in that: The anti-pinch partition is in a U-shaped structure, and the side plates on both sides of the anti-pinch partition are respectively connected to the hinge shaft.

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