Self-limiting opening and closing hinge and using method thereof
By designing a self-limiting opening and closing hinge, combining rotary bent pipe welding, limit welding and base welding, the problem that the engine hood hinge in the prior art cannot provide assistance and requires additional limit structure, and the hood is realized The power-on and limit functions save space and improve assembly efficiency.
Patent Information
- Application Number
- CN202411684207.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-22
- Publication Date
- 2025-02-25
AI Technical Summary
Existing hood hinges do not provide power when opening the hood and require additional limiting structures to prevent accidental falls or closing of the hood, resulting in wasted space occupation and assembly time.
A self-limited opening and closing hinge is designed to realize the power-opening and limiting functions of the hood through a combination of rotary bent pipe welding, limiting welding and base welding. Specifically, the implementation includes setting a first protrusion on the rotary shaft connecting plate and setting a first groove on the limiting plate. When the hood is opened to a set angle, the first protrusion enters the first groove to realize the limiting position; At the same time, the first spring provides aid for the rotary bent pipe welding.
The hood is realized when it is opened, and the hood is prevented from falling or closing accidentally through the limit function, saving installation space and improving assembly efficiency.
Smart Images
Figure CN119507763A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of hinges, and in particular relates to a self-limiting opening and closing hinge and a use method thereof. Background Art
[0002] The existing engine hood hinge consists of a fixed seat, a pin and a rotating arm. The fixed seat is mounted on the vehicle body, and the rotating arm is riveted to the fixed seat through a pin and can rotate around the pin. On the one hand, this structure cannot provide assistance when opening the hood, and a gas spring or other structure must be installed separately to achieve this. On the other hand, a limit structure must be installed separately to prevent the hood from accidentally falling or closing when opened. The assembly of these structures not only occupies the space of the entire machine, but also wastes assembly time. Summary of the invention
[0003] In response to the defects or shortcomings in the prior art, the present invention provides a self-limiting opening and closing hinge and a method of using the same. Compared with traditional hinges, the self-limiting opening and closing hinge can not only provide assistance when opening the hood, but also limit the hood to prevent the hood from accidentally falling or closing when opening, thereby saving installation space and improving assembly efficiency.
[0004] To achieve the above object, the present invention adopts the following technical solution: In a first aspect, an embodiment of the present invention provides a self-limiting opening and closing hinge, comprising a rotating elbow weld, a limiting weld and a base weld, wherein the rotating elbow weld and the limiting weld are both hinged to the base weld, the base weld is fixed to a loader frame, and the rotating elbow weld is fixedly connected to a loader hood; The rotary elbow weld includes a elbow and a shaft connecting plate, the shaft connecting plate is fixed at the bottom end of the elbow, a first protrusion is arranged on the outer end surface of the shaft connecting plate, the limiting weld includes a limiting rod and a limiting plate, the limiting plate is fixed at the bottom of the limiting rod, a first groove is opened on the limiting plate, and the first protrusion and the first groove are arranged correspondingly.
[0005] Furthermore, the bent pipe includes a first straight pipe section, a second straight pipe section, a connecting section and a fixed section. The second straight pipe section is located below the first straight pipe section. The first straight pipe section and the second straight pipe section are connected by the connecting section. The connecting section is arranged perpendicular to the first straight pipe section and the second straight pipe section. One end of the connecting section is connected to the bottom end of the first straight pipe section, and the other end is connected to the top end of the second straight pipe section. The fixed section is located at the bottom end of the second straight pipe section, and the fixed section is bent toward the front side of the second straight pipe section.
[0006] Furthermore, a rotating shaft connecting plate is provided on the fixed section, and a side surface of the rotating shaft connecting plate is welded and fixed to the fixed section. A first rotating shaft is fixedly connected to the rotating shaft connecting plate, and the first rotating shaft extends toward an end of the rotating shaft connecting plate away from the fixed section, and the first rotating shaft and the connecting section are parallel to each other.
[0007] Furthermore, the limiting welding also includes a first spring mounting plate, which is fixed at the middle of the limiting rod and located above the limiting plate. The first spring mounting plate is arranged perpendicular to the limiting rod, and the first spring mounting plate and the limiting plate extend in the same direction.
[0008] Furthermore, the base welding includes a base support plate, a shaft fixing plate is arranged on the upper surface of the base support plate, the transverse cross-section of the shaft fixing plate is U-shaped, and shaft holes are opened on both side walls thereof, and one end of the first shaft away from the shaft connecting plate passes through the shaft holes on the side walls on both sides in sequence and is fixed by bolts.
[0009] Furthermore, a first spring is sleeved on the rotating shaft between the two side plates of the rotating shaft fixing plate, and spring mounting holes are opened on the side plates of the rotating shaft connecting plate and the rotating shaft fixing plate away from the rotating shaft connecting plate, and the two ends of the first spring are respectively fixed in the spring mounting holes.
[0010] Furthermore, a shaft mounting plate is provided on the lower surface of the base support plate, and the shaft mounting plate is located at one end of the lower surface of the base support plate away from the shaft fixing plate. A second shaft is fixedly connected to the shaft mounting plate, and the second shaft is perpendicular to the shaft mounting plate and extends to the side of one side of the base support plate.
[0011] Furthermore, a second shaft hole is provided at one end of the limiting plate close to the limiting rod, and one end of the second rotating shaft away from the rotating shaft mounting plate passes through the second shaft hole and is fixed by a locking pin.
[0012] Furthermore, a second spring mounting plate is fixedly connected to the end surface of the base support plate close to one end of the shaft mounting plate, the second spring mounting plate is arranged perpendicular to the base support plate, and the second spring mounting plate is connected to the first spring mounting plate through a second spring.
[0013] In a second aspect, an embodiment of the present invention further provides a method for using a self-limiting opening and closing hinge, using the self-limiting opening and closing hinge as described above, comprising the following steps: When the hood is opened, the bent pipe rotates around the first rotating shaft following the hood, and the rotating shaft connecting plate rotates together with the first rotating shaft. When the hood is opened to a set angle, the first protrusion on the rotating shaft connecting plate falls into the first groove, and the rotating shaft connecting plate is limited by the first groove, thereby limiting the rotation of the rotating shaft connecting plate. At this time, the hood is locked and remains in an open state. When the hood needs to be closed, the limit rod is swung to drive the limit plate to rotate through the second rotating shaft. At this time, the first groove is away from the first protrusion, and the first groove no longer limits the rotating shaft connecting plate. The hood can be closed by rotating the hood in the opposite direction.
[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention arranges a first protrusion on the shaft connecting plate and a first groove on the limiting plate. When the hood is opened, the first protrusion follows the shaft connecting plate to rotate to the position of the first groove, and the first protrusion enters the first groove. The first groove limits the first protrusion, thereby preventing the shaft mounting plate from continuing to rotate. At this time, the loader hood opens to a set angle, and the loader hood is kept in an open state under the action of the first protrusion and the first groove, thereby preventing the hood from accidentally falling or closing when it is opened.
[0015] 2. The present invention arranges a first spring on the outside of the first rotating shaft, and the two ends of the first spring are respectively connected to the rotating shaft connecting plate and the rotating shaft fixing plate. When the hood is closed, the first spring is in a pre-tightened state. When the hood is opened, the elastic force of the first spring can be used to drive the rotating elbow weld to rotate around the base weld, thereby providing assistance for opening the hood. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a schematic diagram of the hinge structure in Embodiment 1 of the present invention; Figure 2 This is a state diagram of the hinge self-limiting in the first embodiment of the present invention; Figure 3 This is a schematic diagram of the rotary elbow welding structure in the first embodiment of the present invention; Figure 4 This is a schematic diagram of the position-limiting welding structure in the first embodiment of the present invention; Figure 5 This is a schematic diagram of the side structure of the base welding in the first embodiment of the present invention; Figure 6 This is a schematic diagram of the welded top surface structure of the base in the first embodiment of the present invention; Figure 7 A diagram showing the connection relationship between the hinge and the hood in the first embodiment of the present invention; Among them, 1. rotary elbow welding; 11. elbow; 110. first straight pipe section; 111. second straight pipe section; 112. connecting section; 113. fixing section; 12. shaft connecting plate; 13. first shaft; 14. hood mounting plate; 15. first protrusion; 2. limiting welding; 21. limiting rod; 22. first spring mounting plate; 23. limiting plate; 24. second shaft hole; 25. first groove; 26. second groove; 3. base welding; 31. base support plate; 32. shaft fixing plate; 33. first shaft hole; 34. shaft mounting plate; 35. second shaft; 36. second spring mounting plate; 37. second protrusion; 4. first spring; 5. second spring; 6. hood. DETAILED DESCRIPTION
[0017] The present invention is further described below in conjunction with the accompanying drawings and embodiments.
[0018] Embodiment 1 A typical implementation of the present invention is as follows Figure 1 and Figure 7 As shown, a self-limiting opening and closing hinge includes a rotating elbow weld 1, a limiting weld 2 and a base weld 3. The rotating elbow weld 1 and the limiting weld 2 are both fixed on the base weld 3, and the rotating elbow weld 1 and the limiting weld 2 are both rotatably connected to the base weld 3. The base weld 3 is fixed on the loader frame, and the rotating elbow weld 1 is fixedly connected to the loader hood 6, thereby realizing the opening and closing of the loader hood 6.
[0019] like Figure 3 As shown, the rotary elbow weld 1 includes an elbow 11 and a shaft connecting plate 12, the shaft connecting plate 12 is fixed to the bottom end of the elbow 11, and is welded and fixed to the bottom end of the elbow 11, the elbow 11 includes a first straight pipe section 110, a second straight pipe section 111, a connecting section 112 and a fixing section 113, the second straight pipe section 111 is located below the first straight pipe section 110, the first straight pipe section 110 and the second straight pipe section 111 are connected by the connecting section 112, the connecting section 112 is perpendicular to the first straight pipe section 110 and the second straight pipe section 111, and the connecting section 112 is One end is connected to the bottom end of the first straight pipe section 110, and the other end is connected to the top end of the second straight pipe section 111. The fixed section 113 is located at the bottom end of the second straight pipe section 111, and the fixed section 113 is bent toward the front side of the second straight pipe section 111. A rotating shaft connecting plate 12 is provided on the fixed section 113. One side surface of the rotating shaft connecting plate 12 is welded and fixed to the fixed section 113. A first rotating shaft 13 is fixedly connected to the rotating shaft connecting plate 12. The first rotating shaft 13 extends toward one end of the rotating shaft connecting plate 12 away from the fixed section 113, and the first rotating shaft 13 and the connecting section 112 are parallel to each other.
[0020] By providing the curved elbow 11, space can be provided for the base weld 3 and the limit weld 2, thereby reducing the installation space occupied.
[0021] A plurality of hood mounting plates 14 are arranged on the first straight pipe section 110, and the plurality of hood mounting plates 14 are arranged side by side along the length direction of the first straight pipe section 110, and a pad is arranged between the first straight pipe section 110 and the hood mounting plates 14, and the first straight pipe section 110 and the hood mounting plates 14 are connected by the pad to ensure the stability of the connection between the hood mounting plates 14 and the first straight pipe section 110.
[0022] Bolt holes are provided at both ends of the hood mounting plate 14, and bolts are used to achieve a fixed connection between the hood mounting plate 14 and the loader hood 6.
[0023] like Figure 4As shown, the limiting weld 2 includes a limiting rod 21, a first spring mounting plate 22 and a limiting plate 23. The limiting plate 23 is fixed at the bottom of the limiting rod 21, and the limiting plate 23 is arranged perpendicular to the limiting rod 21. The first spring mounting plate 22 is fixed at the middle of the limiting rod 21, located above the limiting plate 23, and the first spring mounting plate 22 is arranged perpendicular to the limiting rod 21. The first spring mounting plate 22 and the limiting plate 23 extend in the same direction.
[0024] like Figure 5 and Figure 6 As shown, the base weld 3 includes a base support plate 31, a plurality of bolt holes are provided on the base support plate 31, and the base support plate 31 is fixedly connected to the loader frame through the bolt holes. A rotating shaft fixing plate 32 is provided on the upper surface of the base support plate 31, and the rotating shaft fixing plate 32 is located at one end of the upper surface of the base support plate 31. The transverse cross-section of the rotating shaft fixing plate 32 is U-shaped, and first shaft holes 33 are provided on both side walls thereof. One end of the first rotating shaft 13 away from the rotating shaft connecting plate 12 passes through the first shaft holes 33 on the side walls on both sides in turn and is fixed by bolts, thereby realizing the rotational connection between the base weld 3 and the rotary elbow weld 1.
[0025] A first spring 4 is sleeved on the first rotating shaft 13 located between the two side plates of the rotating shaft fixing plate 32. Spring mounting holes are opened on the rotating shaft connecting plate 12 and the side plate of the rotating shaft fixing plate 32 away from the rotating shaft connecting plate 12. Both ends of the first spring 4 are respectively fixed in the spring mounting holes.
[0026] When the hood 6 is closed, the first spring 4 is in a pre-tightened state. When the hood 6 is opened, the elastic force of the first spring 4 can be used to drive the rotary elbow weld 1 to rotate around the base weld 3, thereby providing assistance for the opening of the hood 6.
[0027] A shaft mounting plate 34 is provided on the lower surface of the base support plate 31, and the shaft mounting plate 34 is located at one end of the lower surface of the base support plate 31 away from the shaft fixing plate 32. A second shaft 35 is fixedly connected to the shaft mounting plate 34. The second shaft 35 and the shaft mounting plate 34 are perpendicular to each other and extend to the side of one side of the base support plate 31 for convenient rotation connection with the limit weld 2. A second shaft hole 24 is provided on one end of the limit plate 23 close to the limit rod 21, and an end of the second shaft 35 away from the shaft mounting plate 34 passes through the second shaft hole 24 and is fixed by a locking pin, thereby realizing the rotation connection between the base weld 3 and the limit weld 2.
[0028] The shaft connecting plate 12 is located above the limit plate 23, and a first protrusion 15 is provided on the outer end surface of the shaft mounting plate 34. A first groove 25 is provided on the top of the end of the limit plate 23 away from the limit rod 21. The first protrusion 15 is correspondingly arranged with the first groove 25. When the loader hood 6 is in the closed state, the first protrusion 15 is located in the first groove 25. When the loader hood 6 is opened, the shaft connecting plate 12 rotates around the first shaft 13 driven by the bent pipe 11, as shown in FIG. Figure 2 As shown, when the first protrusion 15 rotates to the position of the first groove 25, the first protrusion 15 enters the first groove 25, and the first groove 25 limits the first protrusion 15, thereby preventing the shaft mounting plate 34 from continuing to rotate. At this time, the loader hood 6 opens to a set angle, and under the action of the first protrusion 15 and the first groove 25, the loader hood 6 remains in an open state.
[0029] A second spring mounting plate 36 is fixedly connected to the end surface of the base support plate 31 close to one end of the rotating shaft mounting plate 34. The second spring mounting plate 36 is arranged perpendicular to the base support plate 31. The second spring mounting plate 36 is connected to the first spring mounting plate 22 through the second spring 5, thereby connecting the base weld 3 and the limit weld 2 through the second spring 5, providing a reset force for the limit weld 2.
[0030] A second protrusion 37 is provided on the end surface of the base support plate 31 close to one end of the limiting plate 23, and the second protrusion 37 extends toward one side of the limiting plate 23. A second groove 26 is provided at a position corresponding to the limiting plate 23 and the second protrusion 37. The second protrusion 37 and the second groove 26 can limit the rotation of the limiting weld 2, thereby preventing the limiting effect of the limiting weld 2 from failing.
[0031] Embodiment 2 This embodiment provides a method for using a self-limiting opening and closing hinge, using a self-limiting opening and closing hinge as described in the first embodiment, including the following steps: When the hood is opened, the bent pipe rotates around the first rotating shaft following the hood, and the rotating shaft connecting plate rotates together with the first rotating shaft. When the hood is opened to a set angle, the first protrusion on the rotating shaft connecting plate falls into the first groove, and the rotating shaft connecting plate is limited by the first groove, thereby limiting the rotation of the rotating shaft connecting plate. At this time, the hood is locked and remains in an open state. When the hood needs to be closed, the limit rod is swung to drive the limit plate to rotate through the second rotating shaft. At this time, the first groove is away from the first protrusion, and the first groove no longer limits the rotating shaft connecting plate. The hood can be closed by rotating the hood in the opposite direction.
[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. A self-limiting opening and closing hinge, characterized in that: It includes a rotating elbow weld, a limiting weld and a base weld, the rotating elbow weld and the limiting weld are both hinged with the base weld, the base weld is fixed on the loader frame, and the rotating elbow weld is fixedly connected to the loader hood; The rotary elbow weld includes a elbow and a shaft connecting plate, the shaft connecting plate is fixed at the bottom end of the elbow, a first protrusion is arranged on the outer end surface of the shaft connecting plate, the limiting weld includes a limiting rod and a limiting plate, the limiting plate is fixed at the bottom of the limiting rod, a first groove is opened on the limiting plate, and the first protrusion and the first groove are arranged correspondingly.
2. A self-limiting opening and closing hinge as claimed in claim 1, characterized in that: The bent pipe includes a first straight pipe section, a second straight pipe section, a connecting section and a fixed section. The second straight pipe section is located below the first straight pipe section. The first straight pipe section and the second straight pipe section are connected via the connecting section. The connecting section is arranged perpendicular to the first straight pipe section and the second straight pipe section. One end of the connecting section is connected to the bottom end of the first straight pipe section, and the other end is connected to the top end of the second straight pipe section. The fixed section is located at the bottom end of the second straight pipe section, and the fixed section bends toward the front side of the second straight pipe section.
3. A self-limiting opening and closing hinge as claimed in claim 2, characterized in that: The fixed section is provided with a rotating shaft connecting plate, one side surface of which is welded and fixed to the fixed section; a first rotating shaft is fixedly connected to the rotating shaft connecting plate, the first rotating shaft extends toward one end of the rotating shaft connecting plate away from the fixed section, and the first rotating shaft and the connecting section are parallel to each other.
4. A self-limiting opening and closing hinge as claimed in claim 3, characterized in that: The limiting welding also includes a first spring mounting plate, which is fixed to the middle of the limiting rod and located above the limiting plate. The first spring mounting plate is arranged perpendicular to the limiting rod, and the first spring mounting plate and the limiting plate extend in the same direction.
5. A self-limiting opening and closing hinge as claimed in claim 4, characterized in that: The base welding includes a base support plate, a shaft fixing plate is arranged on the upper surface of the base support plate, the transverse cross-section of the shaft fixing plate is U-shaped, and shaft holes are opened on both side walls thereof, and the end of the first shaft away from the shaft connecting plate passes through the shaft holes on the side walls on both sides in turn and is fixed by bolts.
6. A self-limiting opening and closing hinge as claimed in claim 5, characterized in that: A first spring is sleeved on the first rotating shaft located between the two side plates of the rotating shaft fixing plate, and spring mounting holes are opened on the side plates of the rotating shaft connecting plate and the rotating shaft fixing plate away from the rotating shaft connecting plate, and the two ends of the first spring are respectively fixed in the spring mounting holes.
7. A self-limiting opening and closing hinge as claimed in claim 5, characterized in that: A shaft mounting plate is provided on the lower surface of the base support plate. The shaft mounting plate is located at one end of the lower surface of the base support plate away from the shaft fixing plate. A second shaft is fixedly connected to the shaft mounting plate. The second shaft is perpendicular to the shaft mounting plate and extends to the side of one side of the base support plate.
8. A self-limiting opening and closing hinge as claimed in claim 7, characterized in that: A second shaft hole is arranged at one end of the limiting plate close to the limiting rod, and one end of the second rotating shaft away from the rotating shaft mounting plate passes through the second shaft hole and is fixed by a locking pin.
9. A self-limiting opening and closing hinge as claimed in claim 5, characterized in that: A second spring mounting plate is fixedly connected to the end surface of the base support plate close to one end of the shaft mounting plate. The second spring mounting plate is arranged perpendicular to the base support plate, and the second spring mounting plate is connected to the first spring mounting plate through a second spring.
10. A method for using a self-limiting opening and closing hinge, using a self-limiting opening and closing hinge as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: When the hood is opened, the bent pipe rotates around the first rotating shaft following the hood, and the rotating shaft connecting plate rotates together with the first rotating shaft. When the hood is opened to a set angle, the first protrusion on the rotating shaft connecting plate falls into the first groove, and the rotating shaft connecting plate is limited by the first groove, thereby limiting the rotation of the rotating shaft connecting plate. At this time, the hood is locked by self-limiting and remains in an open state. When the hood needs to be closed, the limit rod is swung to drive the limit plate to rotate through the second rotating shaft. At this time, the first groove is away from the first protrusion, and the first groove no longer limits the rotating shaft connecting plate. The hood can be closed by rotating the hood in the opposite direction.