Pin type ball joint

Abstract

The utility model relates to the technical field of automobile parts, in particular to a pin type ball socket connector used on an electric push rod of an automobile electric tail door. The ball socket seat is provided with a ball head groove used for containing the ball head and a strip-shaped groove used for containing the ball head pin, the side face of the ball socket seat is further provided with an insertion groove communicated with the strip-shaped groove, and the end, back to the ball head groove, of the ball socket seat is provided with a limiting groove; the clamp spring pin is of a U-shaped structure and is divided into a closed frame-shaped limiting pin and an open U-shaped limiting pin; wherein the frame-shaped limiting pin is clamped in the limiting groove and is used for fixing the whole clamp spring pin on the ball socket seat; the U-shaped limiting pins are inserted into the inserting grooves, and the two inserting parts on the U-shaped limiting pins limit the ball head located in the ball socket groove. Although only small adjustment is carried out, the strength of the whole clamp spring contact pin is effectively improved, and particularly the connecting strength between the clamp spring contact pin and the ball head is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts, and more specifically, to a pin-type ball socket joint for an electric push rod of an automobile electric tailgate. Background Technique

[0002] An electric tailgate push rod, also known as an electric strut or an electric lifter, is a device used in modern automobiles to automatically open and close the trunk lid or tailgate. It uses an electric motor to generate power and converts rotational motion into linear motion through gears, screws, or linear actuators to push or pull the tailgate to complete the opening and closing actions.

[0003] Among them, the ball socket joint used in the electric push rod on the automobile electric tailgate is a special joint connecting piece, which allows the electric push rod to move freely in multiple directions to adapt to the complex movement path during the opening and closing of the tailgate. The design of the ball socket joint enables the electric push rod to rotate and tilt within a certain range, ensuring stable and smooth movement even when the tailgate angle changes.

[0004] Currently, the existing ball socket assembly consists of a ball socket and a sheet-shaped circlip that cooperates with it. The structure of this circlip is relatively complex and requires stamping forming, with higher requirements for the product contour size and heat treatment; moreover, since the disassembly of the circlip structure is relatively complex and requires a professional narrow-headed offset screwdriver for disassembly, but the disassembly position cannot be fixed, there are risks such as over-disassembly or even detachment.

[0005] Therefore, the applicant applied for a gear-type ball socket assembly with a publication number of CN113669359A. The disassembly of the circlip in the gear-type ball socket assembly is more convenient, and there is no obvious contact between the circlip and the ball pin during the movement of the ball pin, and the movement noise is also lower. For this ball socket assembly, the ball head is limited by two frames on the circlip. Although the disassembly and assembly are convenient, this design results in relatively weak clamping strength of the circlip and is prone to bending. Content of the Utility Model

[0006] The main purpose of the present utility model is to propose a pin-type ball socket joint for an electric push rod of an automobile electric tailgate to solve the technical problems mentioned in the background technique.

[0007] To solve the above technical problems, the present utility model proposes a pin-type ball socket joint for an electric push rod, including;

[0008] A ball socket seat, on which there is a ball head groove for accommodating a ball head and a strip groove for accommodating a ball head pin. A slot communicating with the strip groove is also provided on the side of the ball socket seat, and a limiting groove is provided at one end of the ball socket seat facing away from the ball head groove;

[0009] and a circlip pin, the circlip pin being of a U-shaped structure and divided into a closed frame-shaped limiting pin and an open U-shaped limiting pin;

[0010] Among them, the frame-shaped limiting pin is clamped in the limiting groove for fixing the entire circlip pin on the ball socket seat; the U-shaped limiting pin is inserted into the slot, and the two insertion parts thereon limit the ball head located in the ball head groove.

[0011] In the above technical solution, further, the two insertion parts of the U-shaped limiting pin are of a double-pin structure.

[0012] In the above technical solution, further, the distance between the two insertion parts of the U-shaped limiting pin is less than the outer diameter of the ball head and greater than the outer diameter of the ball head pin.

[0013] In the above technical solution, further, the circlip pin is formed by bending a spring wire, and the connection between the frame-shaped limiting pin and the U-shaped limiting pin is of a cross structure.

[0014] Beneficial effects: Compared with the prior art, the frame-shaped limiting pin of the present application is used to fix the entire circlip pin, while the U-shaped limiting pin is used to limit the ball head. Although this structure is only a small adjustment compared with the prior structure, it effectively improves the strength of the entire circlip pin, especially the connection strength between it and the ball head. Description of the Drawings

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 is a schematic structural diagram of the present invention;

[0017] Figure 2 is a schematic structural diagram of another perspective of the present invention;

[0018] Figure 3 is a schematic structural diagram of the circlip pin of the present invention.

[0019] The description of the reference numerals is as follows:

[0020] 100, ball socket seat; 110, ball head groove; 120, strip groove; 130, slot; 140, limiting groove; 200, circlip pin; 210, frame-shaped limiting pin; 220, U-shaped limiting pin. Detailed Embodiments

[0021] Next, exemplary embodiments according to the present application will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. It should be understood that the present application is not limited by the exemplary embodiments described herein. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0022] It should be noted that, as shown in the present application and the claims, unless the context clearly indicates otherwise, words such as "a", "an", "one", and / or "the" are not specifically singular and may also include plural. Generally speaking, the terms "include" and "comprise" only indicate the inclusion of the clearly identified steps and elements, and these steps and elements do not constitute an exclusive list. The method or device may also include other steps or elements.

[0023] If there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present invention, then such directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If this specific posture changes, then the directional indications will also change accordingly.

[0024] In the present invention, unless otherwise clearly specified and limited, terms such as "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, then such descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and / or" appearing throughout the text includes three parallel scenarios. Taking "A and / or B" as an example, it includes scenario A, or scenario B, or the scenario where A and B are satisfied simultaneously. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions conflicts with each other or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0026] Regarding the gear - type ball socket assembly mentioned in the background art, the present application proposes a pin - type ball socket joint for an electric push rod, and the snap ring pin on it has advantages such as high strength and good limiting effect.

[0027] The following will detail a pin - type ball socket joint of the present application through the following embodiments.

[0028] Embodiment 1:

[0029] As Figures 1 - 3 shown, in this embodiment, a pin - type ball socket joint includes:

[0030] A ball socket seat 100, on which there is a ball head groove 110 for accommodating a ball head and a strip - shaped groove 120 for accommodating a ball head pin. There is also a slot 130 on the side of the ball socket seat 100 that communicates with the strip - shaped groove 120, and a limiting groove 140 is provided at one end of the ball socket seat 100 facing away from the ball head groove 110;

[0031] And a snap ring pin 200, the snap ring pin has a U - shaped structure and is divided into a closed frame - type limiting pin foot 210 and an open - ended U - shaped limiting pin foot 220;

[0032] Among them, the frame - type limiting pin foot 210 is clamped in the limiting groove 140 to fix the entire snap ring pin 200 on the ball socket seat 100; the U - shaped limiting pin foot 220 is inserted into the slot 130, and the two insertion parts on it are aligned with the ball head in the ball head groove 110 to limit the ball head.

[0033] By optimizing the slot 130, the limiting groove 140 and the snap ring pin 200 on the ball socket seat 100, the connection strength to the ball head is improved, so that the ball head is not easily loosened in the ball socket seat 100.

[0034] Specifically, the snap ring pin 200 is a U - shaped structure formed by bending a closed spring wire. First, it is bent into a square - frame structure, and then cross - bent to form a U - shaped structure. At this time, both ends of the U - shaped structure are closed and in a frame - type, and one end is long and the other is short. The short end forms the frame - type limiting pin foot 210, and the long end is then bent inward and changes from a frame - type to a U - type, and is a U - type with a double - pin - foot structure.

[0035] After this setting, the frame - type limiting pin foot 210 is used to fix the entire snap ring pin 200, and the U - shaped limiting pin foot 220 is used to limit the ball head. Compared with the prior structure, although it is only a small adjustment, it effectively improves the strength of the entire snap ring pin 200, especially the connection strength between it and the ball head.

[0036] It should be noted that the distance between the two insertion parts of the U-shaped limiting pin 220 is less than the outer diameter of the ball head and greater than the outer diameter of the ball head pin, so as to realize the limitation of the ball head in the ball socket seat 100.

[0037] The embodiments of the present disclosure have been described above. The above description is exemplary and not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations are obvious to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The choice of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A pin-type ball joint, characterized in that: include; A ball socket (100), wherein the ball socket (100) is provided with a ball head groove (110) for accommodating a ball head and a strip groove (120) for accommodating a ball head pin, a slot (130) connected to the strip groove (120) is also provided on a side surface of the ball socket (100), and a limiting groove (140) is provided at one end of the ball socket (100) facing away from the ball head groove (110); and a spring pin (200), the spring pin having a U-shaped structure and being divided into a closed frame-shaped limiting pin (210) and an open U-shaped limiting pin (220); The frame-shaped limiting pin (210) is snap-fitted into the limiting groove (140) to fix the entire retaining spring pin (200) onto the ball socket (100); the U-shaped limiting pin (220) is plugged into the slot (130), and the two plug-in parts thereon limit the ball head located in the ball head slot (110).

2. The pin-type ball joint according to claim 1, characterized in that: The two plug-in parts of the U-shaped limiting pin (220) are double-pin structures.

3. The pin-type ball joint according to claim 1, characterized in that: The distance between the two plug-in parts of the U-shaped limiting pin (220) is smaller than the outer diameter of the ball head, and larger than the outer diameter of the ball pin.

4. The pin-type ball joint according to claim 1, characterized in that: The length direction of the strip groove (120) is consistent with the length direction of the U-shaped limiting pin (220).

5. The pin-type ball joint according to any one of claims 1 to 4, characterized in that: The spring pin (200) is formed by bending a spring wire, and the connection between the frame-shaped limiting pin (210) and the U-shaped limiting pin (220) is a cross structure.

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