Hinge assembly and opening and closing device

Abstract

The utility model 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 seat 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 seat is arranged on a second plate body in a sliding mode. 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 utility model can eliminate the influence of machining precision on the assembly clearance, so that the integral appearance of the product is ensured, and the attractiveness and the quality stability of the product are improved.

Description

Technical Field

[0001] This utility model relates to the field of hinge technology, specifically to a hinge assembly and opening / closing device. Background Technology

[0002] Most existing forklift opening and closing mechanisms use traditional hinges. Hinges typically connect two components by welding or bolting, and the assembly clearance relies entirely on machining precision. In practical applications, if the clearance is too small, it increases opening and closing resistance; if the clearance is too large, it not only affects aesthetics but also easily causes shaking and abnormal noise, thus affecting product quality stability. Utility Model Content

[0003] The purpose of this invention is to eliminate the influence of machining accuracy on assembly clearance and to provide a hinge assembly that can ensure the overall appearance of the product is integrated, thereby improving the product's aesthetics and quality stability.

[0004] To achieve the above objectives, this utility model provides a hinge assembly, comprising:

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

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

[0007] An adjustment assembly includes a gear fixedly disposed at the other end of the hinge rod and a rack fixedly disposed on the second plate. The rack is used to engage with the gear to drive the end of the second plate near the first plate into or out of the clearance groove when the hinge seat slides.

[0008] Optionally, it also includes an elastic component, one end of which is connected to the second plate and the other end of which is connected to the hinge seat. The hinge seat slides when the second plate moves to compress or stretch the elastic component.

[0009] Optionally, the hinge rod includes:

[0010] A straight segment, wherein the straight segment is connected to the first plate;

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

[0012] Optionally, the hinge seat includes:

[0013] Two sets of sliding plates are arranged parallel to each other vertically, and the other end of the arc-shaped segment is located between the two sets of sliding plates and is in contact with the opposite side of the two sets of sliding plates.

[0014] The connecting plate has two ends connected to the two sets of sliding plates respectively, and the other end of the elastic component is connected to the connecting plate;

[0015] A pin passes vertically through the two sets of sliding plates, the other end of the arc segment, and the gear, and is fixedly connected to the other end of the arc segment and the gear. The sliding plate is rotatably connected to the pin.

[0016] Optionally, the hinge seat further includes two slide rails disposed on the second plate, the two slide rails being symmetrically disposed on both sides of the rack and 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.

[0019] The second aspect of this utility model provides an opening and closing device, comprising:

[0020] Box;

[0021] Second plate;

[0022] A fixing frame is provided at the opening of the box body, and the fixing frame is provided with a mating groove that matches the outer contour of the second plate.

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

[0024] As described in any of the preceding claims, when the hinge assembly rotates, the second plate can open or close the housing.

[0025] Optionally, a limit block is provided on the side of the fixing frame away from the second plate, and the limit block contacts the closed second plate to restrict its movement into the box.

[0026] Optionally, a locking mechanism is provided at the end of the second plate away from the hinge assembly, and a corresponding fastener is provided on the fixed frame. The locking mechanism and the fastener achieve locking linkage through slidable contact.

[0027] Through the above technical solution, the hinge assembly provided by this utility model automatically adjusts the distance between the rotation hinge point and the edge of the second plate during the opening process of the second plate through the meshing relationship of gears and racks. This can effectively reduce the space required when the second plate is opened. Furthermore, by changing the initial meshing point position of the gears and racks, the product assembly gap can be adjusted, eliminating the influence of machining accuracy on the assembly gap, ensuring the overall appearance of the product is integrated, thereby improving the product's aesthetics and quality stability. Attached Figure Description

[0028] Figure 1 This is a structural schematic diagram of a hinge assembly in its first usage state provided by this utility model;

[0029] Figure 2 This is a structural schematic diagram of a hinge assembly in its second usage state provided by this utility model;

[0030] Figure 3 This is an exploded structural diagram of a hinge assembly provided by this utility model;

[0031] Figure 4 This is a schematic diagram of the opening and closing device provided by this utility model in the open state;

[0032] Figure 5 This is a schematic diagram of the closed state of an opening and closing device provided by this utility model;

[0033] Figure 6 This is a schematic diagram of the running trajectory of the second plate in this utility model;

[0034] Figure 7 This is a comparison diagram of the motion trajectory of the second plate in this utility model and the motion trajectory of the second plate equipped with a traditional hinge assembly;

[0035] Figure 8 This is a structural schematic diagram of an embodiment of a hinge rod provided by this utility model;

[0036] Figure 9 This is a schematic diagram of the structure of a hinge seat provided by this utility model.

[0037] Explanation of reference numerals in the attached figures

[0038] 1. Hinge rod; 11. Straight section; 12. Curved section; 13. Groove; 14. Fastening bolt assembly; 2. Hinge seat; 21. Slide plate; 22. Connecting plate; 23. Pin; 24. Slide rail; 25. Snap ring; 26. Washer; 27. Shim; 3. First plate; 4. Second plate; 51. Gear; 52. Rack; 6. Elastic component; 7. Fixed frame; 8. Limiting block; 91. Locking mechanism; 92. Locking fastener. Detailed Implementation

[0039] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0040] The following is based on Figures 1 to 9 The present invention provides a detailed description of the hinge assembly and the opening and closing device having the hinge assembly.

[0041] The hinge assembly of this invention is applicable to opening and closing devices of industrial equipment, including but not limited to forklifts, engineering vehicles and general machinery.

[0042] In the prior art, the opening and closing devices on forklifts, such as seat cover, counterbalance cover, engine hood side door, and cab windshield, mostly use hinged hinges. Due to the structural characteristics of hinged hinges, an appropriate gap must be left between the two connected parts to meet the normal opening and closing function. The hinge plate of the hinged hinge and the connected parts are often fixed by welding or fasteners. Therefore, the gap between the two parts depends on the control of the machining accuracy. If the gap is not well controlled, it will not only affect the appearance, but may also affect the opening and closing function, resulting in low quality stability.

[0043] Based on this, combined Figure 1 , Figure 2 , Figure 3 as well as Figure 4 As shown, this utility model 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 a first plate 3, and the other end of the hinge rod 1 cooperates with the first plate 3 to form a clearance groove; the hinge seat 2 is slidably disposed on a second plate 4 and rotatably connected to the other end of the hinge rod 1; the adjustment assembly includes a gear 51 fixedly disposed on the other end of the hinge rod 1 and a rack 52 fixedly disposed on the second plate 4; the rack 52 is used to mesh with the gear 51 to drive the end of the second plate 4 near the first plate 3 into or out of the clearance groove when the hinge seat 2 slides.

[0044] In this utility model, one end of the hinge rod 1 is connected to the first plate 3. The connection method can be an existing connection method that can stably and reliably connect the hinge rod 1 and the first plate 3. For example, multiple mounting holes are provided at one end of the hinge rod 1, and the hinge rod 1 is fixed to the first plate 3 by the fastening bolt group 14.

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

[0046] A gear 51 is fixedly installed at the other end of the hinge rod 1, and a rack 52 is fixedly installed on the second plate 4. The rack 52 is meshed with the gear 51. Therefore, when the second plate 4 is opened or closed, the rack 52 and the gear 51 mesh and drive the end of the second plate 4 close to the first plate 3 into or out of the clearance groove, thereby automatically adjusting the distance between the hinge point of the hinge assembly and the edge of the second plate 4. This can effectively reduce the space required for the second plate 4 to open. Furthermore, 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 machining accuracy on the assembly gap, ensuring the overall appearance of the product is integrated, thereby improving the product's aesthetics and quality stability. In addition, the meshing of the rack 52 and the gear 51 can ensure that the opening and closing action of the second plate 4 is smoother.

[0047] Specifically, such as Figure 6 As shown, for hinge rod 1, the pivot point is always point O, while for the second plate 4, the position of the pivot point is constantly changing. A1A2A3A4A5A6A7A8 in the figure represent the movement trajectory of the outermost point of the second plate 4. It can be seen that the rotation radius increases linearly with the opening angle. However, compared to a conventional hinge with O1 as the pivot point and A1B1 as the movement trajectory, this invention requires a smaller opening space. Figure 7 As shown.

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

[0049] It is understandable that the transmission pair consisting of gear 51 and rack 52 can be replaced by equivalent alternatives such as rope-pulley combination or roller chain transmission device, provided that the motion transmission function is satisfied.

[0050] Furthermore, in pursuit of a unified overall appearance, moving parts often adopt a recessed design, requiring additional exposed handles for easy opening and closing. This may limit the operating space, and ordinary hinges do not have a buffer function, resulting in an unstable opening and closing process that can easily impact fixed parts.

[0051] Based on this, the hinge assembly in this utility model also includes an elastic component 6. One end of the elastic component 6 is connected to the second plate 4, and the other end of the elastic component 6 is connected to the hinge seat 2. The hinge seat 2 slides when the second plate 4 moves to drive the elastic component 6 to compress or stretch.

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

[0053] It is understood that the elastic element can be configured as a pneumatic energy storage unit (e.g., a gas spring), or optionally equipped with a hydraulic damper or a mechanical compression spring, etc., as well as a fluid damping mechanism.

[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 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 disposed inside the groove 13.

[0055] The direct connection between the straight segment 11 and the first plate 3 ensures the stability and reliability of the connection. The arc segment 12 is designed to bend towards the first plate 3, forming a clearance groove with the first plate 3. A groove 13 is opened at its other end to fix the gear 51, so that the gear 51 can be better positioned and easily meshed with the rack 52 on the second plate 4. In addition, the other end of the arc segment 12 forms an inner curved surface. When the second plate 4 is opened, the second plate 4 contacts the inner curved surface for limiting, without the need for an additional limiting mechanism.

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

[0057] In some embodiments, combined with Figure 3 and Figure 9As shown, the hinge base 2 includes two sets of sliding plates 21, a connecting plate 22, a pin 23, and two slide rails 24. Specifically, the two sets of sliding plates 21 are arranged vertically in parallel, and the other end of the arc-shaped segment 12 is located between the two sets of sliding plates 21 and is in contact with the opposite sides of the two sets of sliding plates 21; both ends of the connecting plate 22 are connected to the two sets of sliding plates 21 respectively, 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 sliding plates 21, the other end of the arc-shaped segment 12, and the gear 51 in a vertical direction, wherein the pin 23 is fixedly connected to the other end of the arc-shaped segment 12 and the gear 51, and the sliding plate 21 is rotatably connected to the pin 23; the two slide rails 24 are arranged on the second plate 4, and the two slide rails 24 are symmetrically arranged on both sides of the rack 52 and are slidably connected to the sliding plate 21.

[0058] In some embodiments, the other end of the arc segment 12 and the center of the gear 51 are provided with a non-complete circular through hole that matches the cross-sectional shape of the pin 23, while the through hole on the slide plate 21 through which the pin 23 passes is a complete circle.

[0059] It is understandable 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. However, the other end of the arc segment 12, the gear 51, and the pin 23 cannot rotate relative to each other, while the hinge seat 2 and the hinge rod 1 can rotate relative to each other.

[0060] In some embodiments, such as Figure 3 The hinge seat 2 shown also includes a retaining ring 25, a washer 26, and a washer 27. The retaining ring 25 is used for axial limiting at the connection between the hinge seat 2 and the hinge rod 1. There are four washer 27 and two washer 26. The washer 27 is preferably made of a self-lubricating material, such as graphite nylon or graphite copper.

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

[0062] To ensure that the hinge assembly of this utility model has a sufficiently large adjustable range and is applicable to more scenarios, in some embodiments, the length of the slide rail 24 can be set as 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 as twice the circumference of the gear 51.

[0063] In this invention, when the second plate 4 is closed, the meshing point of the gear 51 and the rack 52 is approximately located in the middle of the rack 52. The position of the meshing point can be finely adjusted according to the need to adjust the assembly clearance of the second plate 4.

[0064] like Figure 4 and 5 As shown, this utility model also provides an opening and closing device, including a housing, a second plate 4, a fixing frame 7, a first plate 3, and the aforementioned hinge assembly.

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

[0066] It is understood that the first plate 3 and the fixed frame 7 in this 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 3 and the fixed frame 7 is preferably 90°.

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

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

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

[0070] When closed, external force pushes the second plate 4, and the hinge seat 2 slides on the second plate 4 toward the elastic component 6, thereby compressing the elastic component 6, i.e. storing energy in the elastic component 6, so that the second plate 4 moves to be flush with the fixed frame 7. At this time, the second plate 4 contacts the limit block 8, and the second plate 4 is fixed by the locking mechanism 91 contacting the fastener 92. When opened, the contact between the locking mechanism 91 and the fastener 92 is released, and the elastic potential energy stored inside the elastic component 6 begins to be released, forcing the hinge seat 2 to slide away from the elastic component 6, so that the hinge seat 2 rotates relative to the hinge rod 1, and the gear 51 and the rack 52 mesh and drive, and the second plate 4 automatically opens relative to the fixed frame 7.

[0071] The hinge assembly and opening / closing device provided by this utility model have the following beneficial effects:

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

[0073] 2. Compared with ordinary hinges, this utility model automatically adjusts the distance between the rotation hinge point and the edge of the second plate 4 during the opening process of the second plate 4 through the meshing relationship of gear 51 and rack 52. The reasonable setting of the parameters of the hinge rod 1 can effectively reduce the space required for the second plate 4 to open. In addition, the meshing transmission of gear 51 and rack 52 can make the opening and closing process smoother.

[0074] 3. The hinge assembly of this utility model is provided with an elastic component 6. When the second plate 4 is closed, it is locked by the locking mechanism 91 and the fastener 92. When it is necessary to open the second plate 4, the locking mechanism 91 and the fastener 92 are released. The second plate 4 can be opened automatically 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 closing, which can reduce noise and the impact of the second plate 4 on the fixed frame 7, and extend the service life.

[0075] 4. In this utility model, the second plate 4 is limited by the limiting block 8 when closed, and is limited by the contact between the second plate 4 and the inner curved surface of the other end of the arc segment 12 in the hinge rod 1 when open. No additional limiting mechanism is required. Furthermore, due to the action of the elastic component 6, the second plate 4 is difficult to be blown by the wind after it is opened, so no additional fixing safety mechanism is required. The overall structure is relatively simple and easy to disassemble and maintain.

[0076] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings; however, the present invention is not limited thereto. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, including the combination of various specific technical features in any suitable manner. To avoid unnecessary repetition, the present invention will not describe the various possible combinations separately. However, these simple modifications and combinations should also be considered as the content disclosed in the present invention and are all within the protection scope of the present invention.

Claims

1. A hinge assembly, characterized by include: A hinge rod (1) is provided, one end of which is connected to the first plate (3), and the other end of which cooperates with the first plate (3) to form a clearance groove. The hinge seat (2) is slidably disposed on the second plate (4) and rotatably connected to the other end of the hinge rod (1); The adjustment assembly includes a gear (51) fixedly disposed at the other end of the hinge rod (1) and a rack (52) fixedly disposed on the second plate (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 (4) close to the first plate into or out of the clearance groove.

2. The hinge assembly of claim 1, wherein, It also includes an elastic component (6), one end of which is connected to the second plate (4), and the other end of which is connected to the hinge seat (2). The hinge seat (2) slides when the second plate (4) moves to drive the elastic component (6) to compress or stretch.

3. The hinge assembly of claim 2, wherein, The hinge rod (1) includes: A straight segment (11) is connected to the first plate (3); An arc segment (12) is provided, one end of which 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 disposed inside the groove (13).

4. The hinge assembly of claim 3, wherein, The hinge seat (2) includes: Two sets of sliding plates (21) are arranged in parallel vertically. The other end of the arc segment (12) is located between the two sets of sliding plates (21) and is in contact with the opposite side of the two sets of sliding plates (21). The connecting plate (22) is connected at both ends to the two sets of sliding plates (21) respectively, 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 the slide plates (21), the other end of the arc segment (12) and the gear (51) in a vertical direction, and is fixedly connected to the other end of the arc segment (12) and the gear (51). The slide plate (21) is rotatably connected to the pin (23).

5. The hinge assembly of claim 4, wherein, The hinge seat (2) also includes two slide rails (24) disposed on the second plate (4). The two slide rails (24) are symmetrically disposed on both sides of the rack (52) and are slidably connected to the slide plate (21).

6. The hinge assembly of claim 5, wherein, 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 pitch circumference of the gear (51).

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

9. The opening and closing device according to claim 8, characterized in that A limiting block (8) is provided on the side of the fixed frame (7) away from the second plate (4). The limiting block (8) contacts the closed second plate (4) to restrict its movement into the box.

10. The opening and closing device according to claim 8, characterized in that The second plate (4) is provided with a locking mechanism (91) at the end away from the hinge assembly, and a corresponding fastener (92) is provided on the fixed frame (7). The locking mechanism (91) and the fastener (92) achieve locking linkage through slidable contact.

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