Hinge assembly and opening and closing device

Abstract

The invention relates to the technical field of hinges, and discloses a hinge assembly and an opening and closing device.The hinge assembly comprises a hinge rod, a hinge base and an adjusting assembly, one end of the hinge rod is connected with a first plate body, the other end of the hinge rod is matched with the first plate body to form a receding groove, and the hinge base is slidably arranged on a second plate body; the adjusting assembly comprises a gear fixedly arranged at the other end of the hinge rod and a rack fixedly arranged on the second plate body, and the rack is used for being in meshing transmission with the gear when the hinge base slides so as to drive the end, close to the first plate body, of the second plate body to enter or move out of the receding groove. The hinge assembly provided by the invention can eliminate the influence of machining precision on the assembly clearance, so that the integral appearance integration of the product is ensured, and the attractiveness and the quality stability of the product are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of hinges, and in particular to a hinge assembly and an opening and closing device. Background Art

[0002] Most of the existing forklift opening and closing devices use traditional hinges. Generally, hinges are connected by welding or bolts. The assembly gap is completely dependent on the processing accuracy. In actual applications, if the gap is too small, the opening and closing resistance will increase. If the gap is too large, it will not only affect the appearance, but also easily cause shaking and abnormal noise, thus affecting the stability of product quality. Summary of the invention

[0003] The purpose of the present invention is to eliminate the influence of processing accuracy on assembly clearance and to provide a hinge assembly which can ensure the overall appearance of the product is integrated and improve the aesthetics and quality stability of the product.

[0004] In order to achieve the above object, the present invention provides a hinge assembly, including:

[0005] A hinge rod, one end of which is connected to the first plate body, and the other end of which cooperates with the first plate body to form a clearance groove;

[0006] A hinge seat is slidably disposed on the second plate body and is rotatably connected to the other end of the hinge rod;

[0007] An adjustment component, the adjustment component includes a gear fixedly arranged at the other end of the hinge rod and a rack fixedly arranged on the second plate body, the rack being used to mesh with the gear when the hinge seat slides to drive the end of the second plate body close to the first plate body to enter or move out of the clearance groove.

[0008] Optionally, an elastic component is further included, one end of the elastic component is connected to the second plate body, and the other end of the elastic component is connected to the hinge seat, and the hinge seat slides when the second plate body moves to drive the elastic component to compress or stretch.

[0009] Optionally, the hinge rod comprises:

[0010] a straight line segment, wherein the straight line segment is connected to the first plate body;

[0011] An arc segment, one end of which is connected to the straight segment, the other end of which is provided with a groove, and the gear is fixedly arranged inside the groove.

[0012] Optionally, the hinge seat includes:

[0013] Two groups of slide plates, the two groups of slide plates are vertically and horizontally distributed, and the other end of the arc segment is disposed between the two groups of slide plates and is in contact with the opposite sides of the two groups of slide plates;

[0014] A connecting plate, both ends of which are respectively connected to the two sets of sliding plates, and the other end of the elastic component is connected to the connecting plate;

[0015] The pin penetrates through the two groups of the slide plates, the other end of the arc segment and the gear in a vertical direction, and is fixedly connected to the other end of the arc segment and the gear. The slide plate is rotationally connected to the pin.

[0016] Optionally, the hinge seat further comprises two slide rails arranged on the second plate body, the two slide rails are symmetrically arranged on two sides of the rack and are slidably connected to the slide plate.

[0017] Optionally, the length of the slide rail is the sum of the length of the rack and the length of the hinge seat.

[0018] Optionally, the length of the rack is twice the circumference of the gear pitch circle.

[0019] A second aspect of the present invention provides an opening and closing device, comprising:

[0020] Box;

[0021] A second plate;

[0022] A fixing frame is arranged at the opening of the box body, and a matching groove matching the outer contour of the second plate body is arranged on the fixing frame;

[0023] A first plate body is disposed on the box body and arranged at an angle of 60-120° with the fixing frame;

[0024] The hinge assembly according to any one of claims 1 to 7, wherein when the hinge assembly rotates, the second plate can open or close the box.

[0025] Optionally, a limit stopper is provided on a side of the fixing frame away from the second plate body, and the limit stopper contacts the second plate body after closing to limit its movement into the box body.

[0026] Optionally, a locking mechanism is provided at one end of the second plate away from the hinge assembly, and a locking member is correspondingly provided on the fixing frame, and the locking mechanism and the locking member are locked in linkage through slidable contact.

[0027] Through the above technical scheme, the hinge assembly provided by the present invention automatically adjusts the distance between the rotating hinge point and the edge of the second plate body during the opening process of the second plate body through the meshing relationship between the gear and the rack, which can effectively reduce the space required when the second plate body is opened, and by changing the initial meshing point position of the gear and the rack, the product assembly gap can be adjusted, eliminating the influence of processing accuracy on the assembly gap, ensuring the overall appearance of the product is integrated, thereby improving the aesthetics and quality stability of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of a hinge assembly provided by the present invention in a first use state;

[0029] Figure 2 It is a structural schematic diagram of a hinge assembly provided by the present invention in a second use state;

[0030] Figure 3 It is a schematic diagram of an exploded structure of a hinge assembly provided by the present invention;

[0031] Figure 4 This is a schematic diagram of an opening state of an opening and closing device provided by the present invention;

[0032] Figure 5 It is a schematic diagram of a closed state of an opening and closing device provided by the present invention;

[0033] Figure 6 It is a schematic diagram of the running track of the second plate body in the present invention;

[0034] Figure 7 is a comparison diagram of the motion trajectory of the second plate body in the present invention and the motion trajectory of the second plate body equipped with a traditional hinge assembly;

[0035] Figure 8 It is a structural schematic diagram of an embodiment of a hinge rod provided by the present invention;

[0036] Fig. 9 It is a structural schematic diagram of a hinge seat provided by the present invention.

[0037] Description of Reference Numerals

[0038] 1. Hinge rod; 11. Straight segment; 12. Arc segment; 13. Groove; 14. Fastening bolt group; 2. Hinge seat; 21. Slide plate; 22. Connecting plate; 23. Pin; 24. Slide rail; 25. Retaining spring; 26. Washer; 27. Gasket; 3. First plate body; 4. Second plate body; 51. Gear; 52. Rack; 6. Elastic component; 7. Fixed frame; 8. Limit block; 91. Locking mechanism; 92. Locking piece. DETAILED DESCRIPTION

[0039] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0040] According to the following Figures 1 to 9 The hinge assembly and the opening and closing device having the hinge assembly provided by the present invention are described in detail below.

[0041] The hinge assembly of the present invention is suitable for opening and closing devices of industrial equipment, including but not limited to forklifts, engineering vehicles and general machinery fields.

[0042] In the prior art, the opening and closing devices on forklifts, such as seat box covers, counterweight covers, hood side doors, and cab windshields, mostly use hinges that are hinge-type. Limited by the structural characteristics of hinge-type hinges, hinge-type hinges require that there must be an appropriate gap between the two connected parts to satisfy the normal opening and closing function. The hinge plate of the hinge-type hinge and the connected parts are often fixedly connected by welding or fasteners. Therefore, the gap between the two parts depends on the control of processing accuracy. If the gap is not well controlled, it will not only affect the appearance, but may also affect the opening and closing function, and the quality stability is low.

[0043] Based on this, combined Figure 1 , Figure 2 , Figure 3 as well as Figure 4 As shown, the present invention provides a hinge assembly, including a hinge rod 1, a hinge seat 2 and an adjustment assembly; one end of the hinge rod 1 is connected to the first plate body 3, the other end of the hinge rod 1 cooperates with the first plate body 3 to form a clearance groove, the hinge seat 2 is slidably set on the second plate body 4, and is rotatably connected to the other end of the hinge rod 1; the adjustment assembly includes a gear 51 fixedly set on the other end of the hinge rod 1 and a rack 52 fixedly set on the second plate body 4, the rack 52 is used to mesh with the gear 51 when the hinge seat 2 slides to drive the end of the second plate body 4 close to the first plate body 3 to enter or move out of the clearance groove.

[0044] In the present invention, one end of the hinge rod 1 is connected to the first plate body 3, and the connection method can be an existing method that can be used for stable and reliable connection between the hinge rod 1 and the first plate body 3, for example, a plurality of mounting holes are set at one end of the hinge rod 1, and the hinge rod 1 is fixed to the first plate body 3 by tightening the bolt group 14.

[0045] One end of the hinge seat 2 is slidably connected to the second plate body 4, and the other end is rotatably connected to the hinge rod 1. When the second plate body 4 is opened or closed, one end of the hinge seat 2 slides on the second plate body 4 along a preset direction and rotates relative to the hinge rod 1 at the same time.

[0046] A gear 51 is fixedly provided at the other end of the hinge rod 1, and a rack 52 is fixedly provided on the second plate body 4, and the rack 52 is meshingly connected with the gear 51. Therefore, when the second plate body 4 is opened or closed, the rack 52 and the gear 51 are meshingly transmitted, driving the end of the second plate body 4 close to the first plate body 3 to enter or move out of the makeshift groove, thereby automatically adjusting the distance between the rotation hinge point of the hinge assembly and the edge of the second plate body 4, which can effectively reduce the space required for opening the second plate body 4, and by changing the initial meshing point position of the gear 51 and the rack 52, the product assembly gap can be adjusted, eliminating the influence of processing accuracy on the assembly gap, ensuring the integration of the overall appearance of the product, thereby improving the aesthetics and quality stability of the product. In addition, the meshing of the rack 52 and the gear 51 can ensure that the opening and closing action of the second plate body 4 is smoother.

[0047] Specifically, if Figure 6 As shown, for the hinge rod 1, the rotation hinge point is always at point O, while for the second plate body 4, the position of the rotation hinge point is always changing. In the figure, A1A2A3A4A5A6A7A8 is the motion trajectory of the outermost point of the second plate body 4. It can be seen that the rotation radius increases linearly with the opening angle. However, compared with the ordinary hinge with O1 as the rotation hinge point and A1B1 as the motion trajectory, the opening space required by the present invention will be smaller, such as Figure 7 shown.

[0048] In some embodiments, the adjustment assembly may be configured as a rope pulley assembly or a sprocket and chain assembly.

[0049] It is understandable that the transmission pair composed of the gear 51 and the rack 52 can adopt an equivalent alternative solution such as a rope pulley-cable combination or a roller chain transmission device, provided that the motion transmission function is satisfied.

[0050] Furthermore, in pursuit of an integrated overall appearance, movable parts nowadays often adopt a recessed design, requiring additional exposed handles to facilitate opening and closing operations, which may also lead to limited operating space. In addition, ordinary hinge-type hinges do not have a buffering function, and the opening and closing process is not smooth, which can easily cause impact on fixed parts.

[0051] Based on this, the hinge assembly in the present invention also includes an elastic assembly 6, one end of the elastic assembly 6 is connected to the second plate body 4, and the other end of the elastic assembly 6 is connected to the hinge seat 2. When the second plate body 4 moves, the hinge seat 2 slides to drive the elastic assembly 6 to compress or stretch.

[0052] During the closing process of the second plate body 4, the elastic component 6 can not only serve as an accumulator and a power source for opening the second plate body 4, but also serve as a buffer to reduce the impact force during the closing process. Specifically, during the closing process of the second plate body 4 by external force, the hinge seat 2 slides on the second plate body 4 toward the elastic component 6, thereby compressing the elastic component 6 to store energy; during the opening process of the second plate body 4, the elastic component 6 can not only serve as a power source, but also serve as a fixing device after opening to prevent the second plate body 4 from being blown by the wind after opening. Specifically, when the elastic potential energy stored in the elastic component 6 begins to be released, it will force the hinge seat 2 to slide in the direction away from the elastic component 6, thereby causing the hinge seat 2 to rotate relative to the hinge rod 1, driving the second plate body 4 to open automatically. In addition, as the opening angle of the second plate body 4 increases, the remaining potential energy of the elastic component 6 becomes smaller, and the opening of the second plate body 4 becomes smoother and more gentle.

[0053] It is understandable that the elastic element can be configured as a gas pressure energy storage unit (such as a gas spring), and can also be equipped with elastic energy storage devices such as hydraulic dampers or mechanical compression springs and fluid damping mechanisms.

[0054] In some embodiments, the hinge rod includes a straight segment 11 and an arc segment 12; the straight segment 11 is connected to the first plate body 3, one end of the arc segment 12 is connected to the straight segment 11, and the other end of the arc segment 12 is provided with a groove 13, and the gear 51 is fixedly arranged inside the groove 13.

[0055] The direct connection between the straight section 11 and the first plate body 3 ensures the stability and reliability of the connection part. The arc section 12 is designed to bend toward the first plate body 3 and can form a clearance groove with the first plate body 3. A groove 13 is provided at the other end thereof for fixing the gear 51, so that the gear 51 can be better positioned and convenient for meshing and transmission with the rack 52 on the second plate body 4. In addition, an inner curved surface is formed at the other end of the arc section 12. When the second plate body 4 is opened, the second plate body 4 contacts the inner curved surface for limiting position without the need for an additional limiting mechanism.

[0056] In some embodiments, Figure 8 As shown, the gear 51 can be integrated with the other end of the arc segment 12.

[0057] In some embodiments, in combination Figure 3 and Fig. 9As shown, the hinge seat 2 includes two sets of slide plates 21, a connecting plate 22, a pin 23 and two slide rails 24. Specifically, the two sets of slide plates 21 are arranged in parallel up and down, the other end of the arc segment 12 is arranged between the two sets of slide plates 21, and is fitted with the opposite sides of the two sets of slide plates 21; the two ends of the connecting plate 22 are respectively connected to the two sets of slide plates 21, and the other end of the elastic component 6 is connected to the connecting plate 22; the pin 23 passes through the two sets of slide plates 21, the other end of the arc segment 12 and the gear 51 in the vertical direction, wherein the pin 23 is fixedly connected to the other end of the arc segment 12 and the gear 51, and the slide plate 21 is rotatably connected to the pin 23; the two slide rails 24 are arranged on the second plate body 4, and the two slide rails 24 are symmetrically arranged on both sides of the rack 52, and are slidably connected to the slide plate 21.

[0058] In some embodiments, the other end of the arc segment 12 and the center of the gear 51 are both provided with a non-complete circular through hole having the same cross-sectional shape as the pin 23 , and the through hole on the slide plate 21 for the pin 23 to pass through is a complete circle.

[0059] It can be understood that the through hole at the other end of the arc segment 12 on the hinge rod 1, the through hole of the gear 51, and the through hole of the slide plate 21 are all coaxial with the pin 23, and the other end of the arc segment 12, the gear 51 and the pin 23 cannot rotate relative to each other, but the hinge seat 2 and the hinge rod 1 can rotate relative to each other.

[0060] In some embodiments, Figure 3 The hinge seat 2 shown also includes a retaining spring 25, a washer 26 and a gasket 27. The retaining spring 25 is used for axial limiting of the connection between the hinge seat 2 and the hinge rod 1. Four gaskets 27 are provided, and two washers 26 are provided. The material of the gasket 27 is preferably a self-lubricating material, such as graphite nylon, graphite copper, etc.

[0061] Specifically, Figure 1 , Figure 2 as well as Figure 3 As shown, along the axial direction of the pin 23, the pin 23, the washer 26, the first slide plate 21, the gasket 27, the upper side of the groove 13, the gasket 27, the gear 51, the gasket 27, the lower side of the groove 13, the gasket 27, the second slide plate 21, the gasket 26, and the retaining ring 25 are arranged in sequence from top to bottom.

[0062] In order to ensure that the adjustable range of the hinge assembly of the present invention is large enough to be applicable to more scenarios, in some embodiments, the length of the slide rail 24 can be set to the sum of the length of the rack 52 and the length of the hinge seat 2, and the length of the rack 52 can be set to twice the circumference of the pitch circle of the gear 51.

[0063] In the present invention, when the second plate body 4 is closed, the meshing point between the gear 51 and the rack 52 is approximately located in the middle of the rack 52 , and the position of the meshing point can be fine-tuned according to the need for adjusting the assembly clearance of the second plate body 4 .

[0064] like Figure 4 and 5 As shown, the present invention further provides an opening and closing device, comprising a box body, a second plate body 4, a fixing frame 7, a first plate body 3 and the above-mentioned hinge assembly.

[0065] Specifically, the fixed frame 7 is arranged at the opening of the box body, and a matching groove matching the outer contour of the second plate body 4 is provided on the fixed frame 7. The first plate body 3 is arranged on the box body and is arranged at an angle of 60-120° with the fixed frame 7. When the hinge assembly rotates, the second plate body 4 can open or close the box body.

[0066] It can be understood that the first plate body 3 and the fixed frame 7 in the opening and closing device can be two parts arranged at an angle of 60-120° or an integral part arranged at an angle of 60-120°. The angle between the first plate body 3 and the fixed frame 7 is preferably 90°.

[0067] In some embodiments, Figure 2 As shown, in order to limit the movement of the second plate body 4 after closing, a limit stopper 8 is provided on the side of the fixing frame 7 away from the second plate body 4. The limit stopper 8 contacts the closed second plate body 4 to limit its movement into the box.

[0068] Furthermore, a locking mechanism 91 is provided at one end of the second plate body 4 away from the hinge assembly, and a locking member 92 is correspondingly provided on the fixed frame 7, and the locking mechanism 91 and the locking member 92 are locked in linkage through slidable contact. The locking mechanism 91 can lock the opening and closing device in a specific closed position, ensuring that the device remains in a stable state during transportation and preventing safety problems caused by accidental opening.

[0069] In summary, the specific working process of the opening and closing device in the present invention is as follows:

[0070] When closing, an external force pushes the second plate body 4, and the hinge seat 2 slides on the second plate body 4 toward the elastic component 6, thereby compressing the elastic component 6, that is, storing energy for the elastic component 6, so that the second plate body 4 moves to be flush with the fixed frame 7. At this time, the second plate body 4 contacts the limit stop block 8, and the second plate body 4 is fixed by the contact between the locking mechanism 91 and the locking member 92; when opening, the contact between the locking mechanism 91 and the locking member 92 is released, and the elastic potential energy stored in the elastic component 6 begins to be released, forcing the hinge seat 2 to slide in the direction away from the elastic component 6, so that the hinge seat 2 rotates relative to the hinge rod 1, the gear 51 and the rack 52 are engaged for transmission, and the second plate body 4 automatically opens relative to the fixed frame 7.

[0071] The hinge assembly and opening and closing device provided by the present invention have the following beneficial effects:

[0072] 1. In the present invention, the hinge seat 2 is slidably connected to the second plate body 4 through the slide rail 24. When the initial meshing point position of the gear 51 and the rack 52 is changed, the gap between the second plate body 4 and the fixed frame 7 can be adjusted, eliminating the influence of the machining accuracy on the gap between the second plate body 4 and the fixed frame 7, thereby improving the aesthetics and quality stability of the product;

[0073] 2. Compared with ordinary hinge-type hinges, the present invention automatically adjusts the distance between the rotating hinge point and the edge of the second plate body 4 during the opening process of the second plate body 4 through the meshing relationship between the gear 51 and the rack 52. Reasonable setting of the parameters of the hinge rod 1 can effectively reduce the space required for the second plate body 4 to be opened. Secondly, the meshing transmission of the gear 51 and the rack 52 can make the opening and closing process smoother;

[0074] 3. The hinge assembly of the present invention is provided with an elastic component 6. When the second plate body 4 is closed, it is locked by the locking mechanism 91 and the locking member 92. When the second plate body 4 needs to be opened, the locking mechanism 91 and the locking member 92 are released. The second plate body 4 can be automatically opened under the action of the elastic component 6, that is, it has an automatic opening function. At the same time, it has a buffering effect when closed, which can reduce noise and the impact of the second plate body 4 on the fixing frame 7, and prolong the service life;

[0075] 4. In the present invention, the second plate body 4 is limited by the limit block 8 when closed, and is limited by the contact between the second plate body 4 and the inner curved surface of the other end of the arc section 12 in the hinge rod 1 when opened, without the need for an additional limiting mechanism. Secondly, due to the action of the elastic component 6, the second plate body 4 is difficult to be blown by the wind after opening, so there is no need for an additional fixing safety mechanism. The overall structure is relatively simple and easy to disassemble and maintain.

[0076] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited thereto. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications, including the combination of various specific technical features in any appropriate manner. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations. However, these simple modifications and combinations should also be regarded as the contents disclosed by the present invention and belong to the protection scope of the present invention.

Claims

1. A hinge assembly, characterized in that: include: A hinge rod (1), one end of the hinge rod (1) being connected to the first plate body (3), and the other end of the hinge rod (1) cooperating with the first plate body (3) to form a clearance groove; A hinge seat (2) is slidably disposed on the second plate body (4) and is rotatably connected to the other end of the hinge rod (1); An adjustment component, the adjustment component comprising a gear (51) fixedly arranged at the other end of the hinge rod (1) and a rack (52) fixedly arranged on the second plate body (4), the rack (52) being used for meshing with the gear (51) when the hinge seat (2) slides to drive the end of the second plate body (4) close to the first plate body to enter or move out of the clearance groove.

2. The hinge assembly according to claim 1, characterized in that: It also comprises an elastic component (6), one end of which is connected to the second plate body (4), and the other end of which is connected to the hinge seat (2); when the second plate body (4) moves, the hinge seat (2) slides to drive the elastic component (6) to be compressed or stretched.

3. The hinge assembly according to claim 2, characterized in that: The hinge rod (1) comprises: A straight line segment (11), the straight line segment (11) being connected to the first plate body (3); An arc segment (12), one end of the arc segment (12) is connected to the straight segment (11), the other end of the arc segment (12) is provided with a groove (13), and the gear (51) is fixedly arranged inside the groove (13).

4. The hinge assembly according to claim 3, characterized in that: The hinge seat (2) comprises: Two groups of slide plates (21), the two groups of slide plates (21) are distributed in parallel up and down, and the other end of the arc segment (12) is arranged between the two groups of slide plates (21) and is in contact with the opposite sides of the two groups of slide plates (21); A connecting plate (22), both ends of which are respectively connected to the two groups of slide plates (21), and the other end of the elastic component (6) is connected to the connecting plate (22); The pin (23) vertically penetrates through the two groups of slide plates (21), the other end of the arc segment (12) and the gear (51), and is fixedly connected to the other end of the arc segment (12) and the gear (51). The slide plate (21) is rotationally connected to the pin (23).

5. The hinge assembly according to claim 4, characterized in that: The hinge seat (2) also includes two slide rails (24) arranged on the second plate body (4), and the two slide rails (24) are symmetrically arranged on both sides of the rack (52) and are slidably connected to the slide plate (21).

6. The hinge assembly according to claim 5, characterized in that: The length of the slide rail (24) is the sum of the length of the rack (52) and the length of the hinge seat (2).

7. The hinge assembly according to claim 1, characterized in that: The length of the rack (52) is twice the circumference of the pitch circle of the gear (51).

8. An opening and closing device, characterized in that: include: Box; A second plate (4); A fixing frame (7) is arranged at the opening of the box body, and a matching groove matching the outer contour of the second plate body (4) is arranged on the fixing frame (7); A first plate (3) is disposed on the box body and is arranged at an angle of 60-120° with the fixing frame (7); The hinge assembly according to any one of claims 1 to 7, wherein when the hinge assembly rotates, the second plate (4) can open or close the box.

9. The opening and closing device according to claim 8, characterized in that: A limit stopper (8) is provided on a side of the fixed frame (7) away from the second plate body (4), and the limit stopper (8) contacts the second plate body (4) after closing to limit its movement into the box body.

10. The opening and closing device according to claim 8, characterized in that: A locking mechanism (91) is provided at one end of the second plate body (4) away from the hinge assembly, and a locking member (92) is correspondingly provided on the fixing frame (7), and the locking mechanism (91) and the locking member (92) are locked in linkage through slidable contact.

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