Four-bar linkage hinge with limiting mechanism

Abstract

The utility model provides a four-connecting-rod hinge with a limiting mechanism, which comprises a vehicle body support, a limiting mechanism and a connecting rod, the vehicle body support is provided with a mounting hole assembled with a vehicle body, and the vehicle body support is stably connected with the vehicle body through the mounting hole; the vehicle door bracket is provided with a mounting hole assembled with a vehicle door, and the vehicle door bracket is stably connected with the vehicle door through the mounting hole; the outer connecting rod comprises an upper outer connecting plate and a lower outer connecting plate, the two ends of the outer connecting rod are hinged to the automobile body support and the automobile door support respectively, and at least one main limiting hole penetrating through the upper outer connecting plate and the lower outer connecting plate is formed in the outer connecting rod; one end of the inner connecting rod is hinged with the automobile door bracket, and the other end of the inner connecting rod is hinged with the automobile body bracket; the limiting pin is matched with the main limiting hole in the outer connecting rod, and the limiting pin is provided with a clamping head; an auxiliary limiting hole matched with the limiting pin is formed in the automobile body support or the automobile door support or the inner connecting rod. The hinge is simple in structure, and the door of the vehicle can be limited at a fixed angle when being opened through the arrangement of the limiting mechanism, so that the door is prevented from being abnormally closed.

Description

Technical Field

[0001] The utility model relates to the technical field of hinges, in particular to a four-link hinge with a limiting mechanism. Background Art

[0002] A known four-bar hinge comprises: a body bracket for fixing the four-bar hinge to the automobile body; a door bracket for fixing the four-bar hinge to the automobile door; an outer link for connecting the body bracket and the door bracket of the four-bar hinge; an inner link for connecting the body bracket and the door bracket of the four-bar hinge; a limiter or a limit mechanism, which can be fixedly connected to the automobile body and the door separately, or can be integrated on the four-bar hinge to limit the opening angle and opening gear of the door.

[0003] Although the above-mentioned four-link hinge is equipped with a limiting mechanism or a separate limiter, which can keep the door at a specific angle without rotating, it encounters special working conditions such as: strong winds; large slopes; body shaking or abnormal contact. The above limiting mechanism or limiter cannot reliably limit the rotation of the door, resulting in abnormal opening or closing of the door, which may cause damage to the door or injury to people. In order to solve the above problems, there are also solutions on the market that use struts or pull rods to directly connect the body and the door to limit the rotation of the door. However, the above solutions all require special struts or pull rods, and holes need to be opened on the body and the door for fixing and storing the struts or pull rods. If the strut or pull rod is damaged or lost, it will not be possible to find a replacement quickly, and it can only be purchased again.

[0004] Therefore, the above scheme has the following obvious defects: 1. Since different models are not interchangeable and need to be specially made, the manufacturing cost is higher; 2. Fixing and storage require holes to be opened on the body and doors, which affects the aesthetic appearance of the entire vehicle and also increases the manufacturing cost of the entire vehicle; 3. Since different models are not interchangeable and are all special parts, it is impossible to find substitutes in emergency situations, and the convenience is poor. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a four-link hinge with a limiting mechanism. The hinge has a simple structure and can limit the vehicle door to a fixed angle when opened through the setting of the limiting mechanism to avoid abnormal closing.

[0006] To achieve the above purpose, the utility model adopts the following technical solution: a four-link hinge with a limiting mechanism, comprising:

[0007] A vehicle body bracket, wherein the vehicle body bracket is provided with a mounting hole for assembly with the vehicle body, and the vehicle body bracket is firmly connected to the vehicle body through the mounting hole;

[0008] A door bracket, wherein the door bracket is provided with a mounting hole for assembly with the door, and the door bracket is firmly connected to the door through the mounting hole;

[0009] An outer connecting rod, comprising an upper outer connecting plate and a lower outer connecting plate, wherein the two ends of the outer connecting rod are respectively hingedly connected to the vehicle body bracket and the door bracket, and the outer connecting rod is provided with at least one main limiting hole penetrating the upper outer connecting plate and the lower outer connecting plate;

[0010] an inner connecting rod, one end of which is hinged to the door bracket, and the other end of which is hinged to the vehicle body bracket;

[0011] A limit pin, the limit pin matches the main limit hole on the outer connecting rod, and the limit pin has a clamping joint;

[0012] The vehicle body bracket, the vehicle door bracket or the inner connecting rod is provided with a secondary limiting hole matching the limiting pin.

[0013] Furthermore, the inner connecting rod is located between the upper outer connecting plate and the lower outer connecting plate, and the secondary limiting hole is provided on the inner connecting rod.

[0014] Furthermore, the vehicle body bracket includes an articulated flange, the articulated flange is articulated to the outer connecting rod via a first rotating shaft, and the articulated flange is articulated to the inner connecting rod via a second rotating shaft.

[0015] Furthermore, the door bracket includes an articulated body, which includes an upper articulated block and a lower articulated block. The articulated body is articulated with an outer connecting rod via a third rotating shaft, and is articulated with an inner connecting rod via a fourth rotating shaft.

[0016] Furthermore, the hinged body and the hinged flange are both located on the inner side of the outer connecting rod.

[0017] Furthermore, the secondary limiting holes are located in the middle area of ​​the inner connecting rod, and the main limiting holes include three groups, corresponding to door openings of 90 degrees, 180 degrees and 270 degrees respectively.

[0018] Furthermore, the door bracket has a reinforcing rib, and the reinforcing rib is provided with a receiving hole.

[0019] Furthermore, the clamping joint of the limit pin is a flat head, and a hanging hole is provided in the flat head.

[0020] Compared with the prior art, the utility model has the following beneficial effects:

[0021] 1. When the four-link hinge does not need to limit the rotation angle, the limit pin can be inserted into the limit hole of the door bracket for storage. There is no need to consider the storage problem of the limit pin separately in the body, door or other positions. Therefore, it will not affect the design of the body, door and other positions, nor will it increase additional costs for the storage problem.

[0022] 2. The limit pin has a simple structure and is easy to operate. It can be applied to multiple products at the same time. Therefore, the limit pin can be used as a universal part to reduce costs.

[0023] 3. When the limit pin is accidentally lost, bolts, screwdrivers, keys and other tools can be used as an emergency replacement to reduce the customer's anxiety after the limit pin is lost. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the four-link hinge structure of the utility model.

[0025] Figure 2 It is a schematic diagram of the maximum opening limit working condition of the four-link hinge of the utility model.

[0026] Figure 3 It is a schematic diagram of the multi-angle opening lower limit working condition of the four-link hinge of the utility model.

[0027] In the figure: 1. body bracket; 2. door bracket; 3. outer connecting rod; 4. inner connecting rod; 5. stop pin; 6. first rotating axis; 7. second rotating axis; 8. third rotating axis; 9. fourth rotating axis; 10. storage hole; 11. main stop hole; 12. auxiliary stop hole; 13. lower hinge block; 14. reinforcing rib plate; 15. hanging hole; 16. hinge flange; DETAILED DESCRIPTION

[0028] The technical solution of the present utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0029] like Figure 1-3 As shown, the embodiment of the utility model proposes a four-link hinge with a limiting mechanism, comprising:

[0030] A vehicle body bracket 1, wherein the vehicle body bracket 1 is provided with a mounting hole for assembly with the vehicle body, and the vehicle body bracket 1 is firmly connected to the vehicle body through the mounting hole;

[0031] A door bracket 2, wherein the door bracket 2 is provided with a mounting hole for assembly with the door, and the door bracket 2 is firmly connected to the door through the mounting hole;

[0032] An outer connecting rod 3, comprising an upper outer connecting plate and a lower outer connecting plate, wherein the upper outer connecting plate and the lower outer connecting plate can be integrally formed with a side plate, and the two ends of the outer connecting rod 3 are respectively hingedly connected to the vehicle body bracket 1 and the door bracket 2, and the outer connecting rod 3 is provided with at least one main limiting hole 11 penetrating the upper outer connecting plate and the lower outer connecting plate;

[0033] an inner connecting rod 4, one end of the inner connecting rod 4 is hinged to the door bracket 2, and the other end is hinged to the body bracket 1;

[0034] A limit pin 5, the limit pin 5 matches the main limit hole 11 on the outer connecting rod 3, and the limit pin 5 has a clamping joint;

[0035] The vehicle body support 1 or the door support 2 or the inner connecting rod 4 is provided with a secondary limiting hole 12 matching the limiting pin 5 .

[0036] The process of the utility model when in use is as follows: the four-link hinge is installed on the vehicle door and the vehicle body, such as the two rear doors of an ambulance. When the rear door of the ambulance needs to be opened and limited, the rear door is flipped outward. When flipping, the inner connecting rod 4, the outer connecting rod 3, the door bracket 2 and the body bracket 1 form a four-bar mechanism, so that the rear door can be flipped. In addition, due to the setting of the inner connecting rod 4, the flipping angle of the rear door can be greater than 90 degrees. When the main limiting hole 11 of the outer connecting rod 3 and the secondary limiting hole 12 provided on the body bracket 1 or the door bracket 2 or the inner connecting rod 4 coincide with each other, at this time, the limiting pin 5 is inserted into the main limiting hole 11 and the secondary limiting hole 12. At this time, due to the positioning of the limiting pin 5, the vehicle door can be fixed at a certain angle, and the rear door will not be closed even on a slope or when the wind is strong.

[0037] Further, the inner connecting rod 4 is located between the upper outer connecting plate and the lower outer connecting plate, and the secondary limiting hole 12 is provided on the inner connecting rod 4. Specifically, the inner connecting rod 4 of the utility model is located between the upper outer connecting plate and the lower outer connecting plate, so that the assembly is more convenient and the structure of the hinge is more compact. In addition, since the secondary limiting hole is provided on the inner connecting rod instead of the limiting hole on the body bracket 1 or the door bracket 2 (which will increase the volume of the body bracket 1 or the door bracket 2), the volume of the hinge can be made not too large.

[0038] Further, the body bracket 1 includes an articulated flange 16, which is articulated with the outer connecting rod 3 via the first rotating shaft 6, and is articulated with the inner connecting rod 4 via the second rotating shaft 7. Specifically, the body bracket 1 has an articulated flange that is articulated with the outer connecting rod 3 via the first rotating shaft 6.

[0039] Further, the door bracket 2 includes an articulated body, the articulated body includes an upper articulated block and a lower articulated block 13, the articulated body is articulated with the outer link 3 via a third rotation axis 8, and the articulated body is articulated with the inner link 4 via a fourth rotation axis 9. Specifically, the door bracket 2 is connected to an articulated body via a connecting portion, the articulated body is articulated with the outer link 3 via an upper articulated block and a lower articulated block and two third rotation axes 8, and is articulated with the inner link 4 via a fourth rotation axis 9 between the upper articulated block and the lower articulated block.

[0040] Furthermore, the hinged body and the hinged flange are both located on the inner side of the outer connecting rod 3. Specifically, the hinged body and the hinged flange of the utility model are both located on the inner side of the outer connecting rod 3, and this structure is more convenient for installation.

[0041] Furthermore, the secondary limiting hole 12 is located in the middle area of ​​the inner link 4, and the main limiting hole 11 includes three groups, corresponding to the door openings of 90 degrees, 180 degrees and 270 degrees. Specifically, the secondary limiting hole 12 of the utility model is set in the middle area of ​​the inner link 4, and the main limiting hole 11 includes three groups, each group corresponds to an angle, and the three groups of main limiting holes 11 may be located at different positions according to the size of the hinge. When the three groups of main limiting holes 11 are plugged with the limiting pin 5, the door openings will be 90 degrees, 180 degrees and 270 degrees respectively.

[0042] Furthermore, the door bracket 2 has a reinforcing rib 14, and a receiving hole 13 is provided on the reinforcing rib 14. Specifically, in order to prevent the limit pin 5 from being lost, the reinforcing rib 14 is provided on the door bracket 2, which increases the strength of the door bracket 2 and enables the limit pin 5 to be received. If the limit pin 5 is lost, a bolt, a screwdriver, a key or other tools can be used to replace it in an emergency.

[0043] Furthermore, the clamping joint of the limit pin is a flat head, and a hanging hole 15 is provided in the flat head. Through the hanging hole on the clamping joint, a wire sling can be fixed on the vehicle body bracket 1 or the door bracket 2, and the sling passes through the hanging hole in the flat head to fix the limit pin 5 so that it will not fall off.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A four-link hinge with a limiting mechanism, characterized in that: include: A vehicle body bracket, wherein the vehicle body bracket is provided with a mounting hole for assembly with the vehicle body, and the vehicle body bracket is firmly connected to the vehicle body through the mounting hole; A door bracket, wherein the door bracket is provided with a mounting hole for assembly with the door, and the door bracket is firmly connected to the door through the mounting hole; An outer connecting rod, comprising an upper outer connecting plate and a lower outer connecting plate, wherein the two ends of the outer connecting rod are respectively hingedly connected to the vehicle body bracket and the door bracket, and the outer connecting rod is provided with at least one main limiting hole penetrating the upper outer connecting plate and the lower outer connecting plate; an inner connecting rod, one end of which is hinged to the door bracket, and the other end of which is hinged to the vehicle body bracket; A limit pin, the limit pin matches the main limit hole on the outer connecting rod, and the limit pin has a clamping joint; The vehicle body bracket, the vehicle door bracket or the inner connecting rod is provided with a secondary limiting hole matching the limiting pin.

2. A four-link hinge with a limiting mechanism according to claim 1, characterized in that: The inner connecting rod is located between the upper outer connecting plate and the lower outer connecting plate, and the secondary limiting hole is arranged on the inner connecting rod.

3. A four-link hinge with a limiting mechanism according to claim 2, characterized in that: The vehicle body bracket comprises an articulated flange, wherein the articulated flange is articulated with an outer connecting rod via a first rotating shaft, and the articulated flange is articulated with an inner connecting rod via a second rotating shaft.

4. A four-link hinge with a limiting mechanism according to claim 3, characterized in that: The door bracket comprises an articulated body, which comprises an upper articulated block and a lower articulated block. The articulated body is articulated with an outer connecting rod via a third rotating shaft, and is articulated with an inner connecting rod via a fourth rotating shaft.

5. A four-link hinge with a limiting mechanism according to claim 4, characterized in that: The hinged body and the hinged flange are both located on the inner side of the outer connecting rod.

6. A four-link hinge with a limiting mechanism according to claim 5, characterized in that: The secondary limiting holes are located in the middle area of ​​the inner connecting rod, and the main limiting holes include three groups, corresponding to door openings of 90 degrees, 180 degrees and 270 degrees respectively.

7. A four-link hinge with a limiting mechanism according to claim 6, characterized in that: The door bracket is provided with a reinforcing rib plate, and the reinforcing rib plate is provided with a receiving hole.

8. The four-link hinge with a limiting mechanism according to claim 7, characterized in that: The clamping joint of the limit pin is a flat head, and a hanging hole is arranged in the flat head.

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