Tie rod ball head

Abstract

A tie rod ball head comprises a rod body and a connector arranged at one end of the rod body, and an assembly hole is formed in the center of the connector. A bushing matched with the assembly hole is arranged in the assembly hole; a ball seat matched with the bushing is arranged in the bushing; a ball body matched with the ball seat is arranged in the ball seat; an upper connecting part is arranged at the upper end of the ball body, and the upper end of the upper connecting part sequentially penetrates through the ball seat and the upper end orifice of the assembly hole upwards; the upper end of the upper connecting part is connected with the upper end of the bushing through an upper dustproof sleeve which is sleeved outside the port of the upper end of the bushing; a lower connecting part is arranged at the lower end of the ball body; and the lower end of the lower connecting part sequentially penetrates through the ball seat and the lower end orifice of the assembly hole downwards. According to the tie rod ball head, the lubricating effect can be achieved through the lubricating grease, silt can be effectively prevented from being mixed into the lubricating grease, the smoothness of the ball body in the rotating process is guaranteed, potential safety hazards are effectively eradicated, and the machining cost can be effectively reduced while the installation efficiency of the ball body is guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of automobile suspension systems, in particular to a tie rod ball head. Background Art

[0002] The tie rod ball head is the joint part used to connect the suspension and the stabilizer bar, which enables the force to be transmitted between the car suspension and the stabilizer bar, effectively reducing the vibration generated when the car is driving.

[0003] The traditional tie rod ball head is mainly composed of a rod body and a ball body. A connecting head is provided at one end of the rod body, and a ball seat groove for assembling a ball seat is provided on the connecting head, and the ball is arranged in the ball seat. When force is transmitted, the ball can move along the trajectory of the inner wall of the ball seat. In order to avoid wear caused by long-term friction between the ball and the inner wall of the ball seat, an oil nozzle connected to the inside of the ball seat is provided outside the connecting head, and grease is lubricated into the gap between the inner wall of the ball seat and the outer wall of the sphere through the oil nozzle. However, when the grease is squeezed out of the ball seat at high pressure, a part of the grease will be squeezed out of the ball seat and finally exposed to the outside world. As a part of the automobile suspension system, once the automobile encounters a road condition with a lot of mud and sand, in the absence of any protection, the external mud and dust can easily come into contact with the grease outside the ball seat through the notch of the ball seat groove, and thus be mixed with the grease. When the ball rotates, the grease mixed with mud and sand can easily enter the gap between the inner wall of the ball seat and the outer wall of the sphere, causing the ball to get stuck when it rotates, posing a serious safety hazard.

[0004] The ball seat of a traditional tie rod ball head is mostly installed directly in the ball seat groove. In order to be able to assemble with the ball, the ball seat is provided with a number of elastic notches to make the ball seat have a certain elasticity to facilitate the ball to squeeze into the ball seat. Therefore, the ball seat cannot be interference fit with the ball seat groove, resulting in the need to provide a limiting structure for fixing the ball seat on the ball seat groove, which requires additional processing of the ball seat groove. The ball seat groove is directly provided on the connecting head, and the connecting head and the rod body are integrally formed. When the ball seat groove needs to be processed, the rod body needs to be continuously loaded and unloaded, and the rod body itself is long and extremely difficult to install, which ultimately makes the processing process of the ball seat groove extremely troublesome, seriously increasing the overall processing cost of the tie rod ball head. Summary of the invention

[0005] The utility model aims to solve the existing technical problem and provide a tie rod ball head, which can not only achieve lubrication through grease, but also effectively prevent mud and sand from mixing into the grease, thereby ensuring the smoothness of the ball rotation, effectively eliminating safety hazards, and effectively reducing processing costs while ensuring the ball installation efficiency.

[0006] The technical solution adopted by the utility model to solve the above technical problems is:

[0007] The utility model discloses a tie rod ball head, comprising a rod body, a connecting head arranged at one end of the rod body, a mounting hole is arranged at the center of the connecting head; a bushing matching the rod body is arranged in the mounting hole; a ball seat matching the rod body is arranged in the bushing; a ball matching the rod body is arranged in the ball seat; an upper connecting part is arranged at the upper end of the ball body, and the upper end of the upper connecting part passes through the ball seat and the upper end opening of the mounting hole in sequence upward; the upper end of the upper connecting part is connected to the upper end of the bushing by an upper dust cover set outside the upper end port of the bushing; a lower connecting part is arranged at the lower end of the ball; the lower end of the lower connecting part is connected to the upper end of the bushing by a dust cover set outside the upper end port of the bushing; the lower end of the ball is provided with a lower connecting part ... inside the upper end port of the bushing; the lower end of the ball is provided with a lower connecting part; the lower end of the lower connecting part is connected to the upper end of the bushing by a dust cover set inside the upper end port of the bushing; the lower end of the ball is provided with a lower connecting part; the lower end of the lower connecting part is connected to the upper end of the bushing by a dust cover set inside the upper end port of the bushing; the lower end of the lower connecting part is connected to the upper end of the bushing by a dust cover set It passes downward through the ball seat and the lower end opening of the assembly hole in sequence; the lower end of the lower connecting part is connected to the lower end of the bushing through a lower dust cover outside the lower end port of the bushing; the connector is provided with an oil nozzle mounting hole that is connected to its internal space; the oil nozzle mounting hole is screwed with an oil nozzle that matches it; the outer wall of the bushing is provided with an annular outer oil channel, and the position of the outer oil channel corresponds to the position of the oil nozzle mounting hole; the inner wall of the bushing is provided with an annular inner oil channel; the inner oil channel and the outer oil channel are connected by an oil hole; the upper part of the ball seat is provided with a plurality of elastic notches that are evenly distributed around the circumference.

[0008] The width of the outer oil passage is greater than the diameter of the oil nozzle mounting hole; and the width of the outer oil passage increases gradually from the inside to the outside.

[0009] The assembly hole and the bushing are in interference fit.

[0010] The inner wall of the upper end opening of the assembly hole is provided with a snap-in groove; the bottom of the snap-in groove is provided with an upper guide cone surface which is wide at the top and narrow at the bottom; the inner wall of the lower end opening of the assembly hole is provided with a lower guide cone surface which is wide at the bottom and narrow at the inside.

[0011] The width of the lower end port of the bushing is greater than that of the upper end port of the bushing, and the ball seat can be inserted into the bushing through the lower end port of the bushing; a limit piece is provided on the lower surface of the bushing to fit with it; the limit piece is annular, and the inner diameter of the limit piece is smaller than the inner diameter of the lower end port of the bushing, and the upper surface of the limit piece fits with the lower surface of the ball seat; an annular lower limit portion is provided on the lower surface of the ball seat; an annular lower limit groove is provided on the outer wall of the limit piece, and the lower end of the lower limit portion is riveted to the upper groove wall of the lower limit groove.

[0012] The outer wall of the lower end of the lower connecting part is provided with a lower positioning groove in the shape of an annular shape; the lower end of the lower dust cover is embedded in the lower positioning groove, and the upper end of the lower dust cover is embedded in the lower limit groove; the outer wall of the upper end of the upper connecting part is provided with an upper positioning groove in the shape of an annular shape; the edge of the upper end port of the bushing extends upward to form an upper limit positioning part in the shape of an annular shape; the outer wall of the upper limit positioning part is provided with an upper limit positioning groove in the shape of an annular shape; the upper end of the upper dust cover is embedded in the upper positioning groove, and the lower end of the upper dust cover is embedded in the upper limit positioning groove.

[0013] The inner diameter of the upper limit portion decreases gradually from top to bottom.

[0014] A fastening structure is disposed outside the upper and lower ends of the upper dust cover and the upper and lower ends of the lower dust cover.

[0015] The fastening structure is a steel wire or a clip wound in several turns.

[0016] The beneficial effects of the utility model are:

[0017] Compared with the prior art, the tie rod ball head adopting the structure of the utility model can protect the ball seat inside through the upper dust cover and the lower dust cover. Therefore, even if a part of the grease overflows from the ball seat when the grease lubricates the ball, this part of the grease can be isolated inside, effectively preventing external mud or dust from mixing into the grease, thereby effectively preventing mud or dust from entering the gap between the inner wall of the ball seat and the outer wall of the sphere with the grease, causing the ball to get stuck when it rotates, effectively eliminating safety hazards, and the ball seat and the ball are directly installed on the bushing. The bushing is assembled in the assembly hole of the connecting head, so the ball seat and the ball can be simultaneously assembled and disassembled by only disassembling the bushing. This assembly method requires the connecting head to only have an assembly hole for assembling the bushing, and there is no need to perform other processing operations on the rod body. The bushing replaces the rod body as the actual carrier of the ball seat and the ball, which is much easier to process than a rod body with a longer length, thus reducing a lot of processing troubles and effectively reducing processing costs. In addition, the bushing, ball seat and ball can form a combination, which is easy to maintain and replace. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the pull rod ball head of the utility model;

[0019] Figure 2 It is a partial cross-sectional view of the tie rod ball head of the utility model;

[0020] Figure 3 It is a top view of the tie rod ball head of the utility model;

[0021] Figure 4 It is a cross-sectional view of the tee. DETAILED DESCRIPTION

[0022] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0023] See also Figures 1 to 4The utility model provides a tie rod ball head, comprising a rod body 1, a connecting head 2 arranged at one end of the rod body 1, a mounting hole 3 is arranged at the center of the connecting head 2; a bushing 4 matching therewith is arranged in the mounting hole 3; a ball seat 5 matching therewith is arranged in the bushing 4; a ball body 6 matching therewith is arranged in the ball seat 5; an upper connecting portion 7 is arranged at the upper end of the ball body 6, and the upper end of the upper connecting portion 7 passes through the ball seat 5 and the upper end opening of the mounting hole 3 in sequence upward; the upper end of the upper connecting portion 7 is connected to the upper end of the bushing 4 by an upper dust cover 8 set outside the upper end port of the bushing 4; a lower connecting portion 9 is arranged at the lower end of the ball body 6; the lower end of the lower connecting portion 9 is downwardly connected to the ball seat 5 and the upper end opening of the mounting hole 3 in sequence; the upper end of the upper connecting portion 7 is connected to the upper end of the bushing 4 by an upper dust cover 8 set outside the upper end port of the bushing 4; the lower end of the ball body 6 is provided with a lower connecting portion 9; the lower end of the lower connecting portion 9 is downwardly connected to the ball seat 5 and the upper end opening of the mounting hole 3 in sequence; the upper end of the upper connecting portion 7 is connected to the upper end of the bushing 4 by an upper dust cover 8 set outside the upper end port of the bushing 4 The lower end of the lower connecting part 9 is connected to the lower end of the bushing 4 through a lower dust cover 10 outside the lower end of the bushing 4; the connector 2 is provided with an oil nozzle mounting hole 11 which is connected with its internal space; the oil nozzle mounting hole 11 is screwed with an oil nozzle 12 which matches it; the outer wall of the bushing 4 is provided with an annular outer oil passage 13, and the position of the outer oil passage 13 corresponds to the position of the oil nozzle mounting hole 11; the inner wall of the bushing 4 is provided with an annular inner oil passage 14; the inner oil passage 14 is connected with the outer oil passage through an oil hole; the upper part of the ball seat 5 is provided with a plurality of elastic notches 15 which are evenly distributed around the circumference.

[0024] The width of the outer oil passage 13 is greater than the diameter of the oil nozzle mounting hole 11 ; the width of the outer oil passage 13 gradually increases from the inside to the outside.

[0025] The assembly hole 3 and the bushing 4 are in interference fit.

[0026] The inner wall of the upper end of the assembly hole 3 is provided with a snap-in groove 16; the bottom of the snap-in groove 16 is provided with an upper guide cone 17 which is wide at the top and narrow at the bottom; the inner wall of the lower end of the assembly hole 3 is provided with a lower guide cone 18 which is wide at the bottom and narrow at the inside.

[0027] The width of the lower end port of the bushing 4 is greater than that of the upper end port of the bushing 4, and the ball seat 5 can be inserted into the bushing 4 through the lower end port of the bushing 4; the lower surface of the bushing 4 is provided with a limit piece 19 that fits therewith; the limit piece 19 is annular, and the inner diameter of the limit piece 19 is smaller than the inner diameter of the lower end port of the bushing 4, and the upper surface of the limit piece 19 fits with the lower surface of the ball seat 5; the lower surface of the ball seat 5 is provided with an annular lower limit portion 20; the outer wall of the limit piece 19 is provided with an annular lower limit groove 21, and the lower end of the lower limit portion 20 is riveted to the upper groove wall of the lower limit groove 21.

[0028] The lower end outer wall of the lower connecting portion 9 is provided with an annular lower positioning groove 22; the lower end of the lower dust cover 10 is embedded in the lower positioning groove 22, and the upper end of the lower dust cover 10 is embedded in the lower limit groove 21; the upper end outer wall of the upper connecting portion 7 is provided with an annular upper positioning groove 23; the edge of the upper end port of the bushing 4 extends upward to form an annular upper limit portion 24; the outer wall of the upper limit portion 24 is provided with an annular upper limit groove 25; the upper end of the upper dust cover 8 is embedded in the upper positioning groove 23, and the lower end of the upper dust cover 8 is embedded in the upper limit groove 25.

[0029] The inner diameter of the upper limit portion 24 decreases gradually from top to bottom.

[0030] A fastening structure is disposed outside the upper and lower ends of the upper dust cover 8 and the upper and lower ends of the lower dust cover 10.

[0031] The fastening structure is a steel wire 26 or a clip spring wound several times.

[0032] The method of using the utility model is as follows:

[0033] When the outer wall of the sphere 6 needs to be lubricated, grease can be injected into the assembly hole 3 through the oil nozzle 12. Since the oil nozzle mounting hole 11 corresponds to the position of the external oil channel 13, the grease will enter the external oil channel 13 under the action of high pressure. As the subsequent grease continues to enter the external oil channel 13, the grease will be squeezed into the internal oil channel 14 through the oil hole. The position of the internal oil channel 14 corresponds to the position of the elastic notch 15, and the internal oil channel 14 is annular, surrounding a number of elastic notches 15 evenly distributed around the circumference. As the grease is squeezed out of the internal oil channel 14, the grease will enter the gap between the inner wall of the ball seat 5 and the outer wall of the sphere 6 through the elastic notch 15. As the sphere 6 continues to rotate, the grease will eventually cover the outer wall of the sphere 6, playing a lubricating role when the sphere 6 rotates.

[0034] Since the elastic notch 15 is arranged at the upper part of the ball seat 5, when the grease enters the gap between the inner wall of the ball seat 5 and the outer wall of the sphere 6 through the elastic notch 15, a part of the grease will overflow to the outside of the upper end of the ball seat 5 through the elastic notch 15. At this time, the upper dust cover 8 can effectively protect this part of the grease, isolate it from the outside world, and effectively prevent external mud or dust from mixing into the grease, while the lower dust cover 10 can protect the lower end port of the ball seat 5, and effectively prevent external mud or dust from directly entering the gap between the inner wall of the ball seat 5 and the outer wall of the sphere 6 through the lower end port of the ball seat 5.

[0035] In summary, the utility model can protect the ball seat 5 inside through the upper dust cover 8 and the lower dust cover 10. Therefore, even if a part of the grease overflows from the ball seat 5 when the grease lubricates the ball 6, this part of the grease can be isolated inside, effectively preventing external mud or dust from mixing into the grease, thereby effectively preventing mud or dust from entering the gap between the inner wall of the ball seat 5 and the outer wall of the ball 6 with the grease, causing the ball 6 to get stuck when rotating, effectively eliminating safety hazards, and the ball seat 5 and the ball 6 are directly installed in the bushing 4, and the bushing 4 is assembled on In the assembly hole 3 of the connecting head 2, it is only necessary to disassemble and assemble the bushing 4 to achieve the synchronous disassembly and assembly of the ball seat 5 and the sphere 6. This assembly method requires the connecting head to only process an assembly hole 3 for assembling the bushing 4, and there is no need to perform other processing operations on the rod body 1. The bushing 4 replaces the rod body 1 as the actual carrier of the ball seat 5 and the sphere 6, which is much easier to process than the rod body 1 with a longer length, thereby reducing a lot of processing troubles and effectively reducing processing costs. In addition, the bushing 4, the ball seat 5 and the sphere 6 can form a combination, which is easy to maintain and replace.

[0036] The width of the outer oil channel 13 is greater than the diameter of the nozzle mounting hole 11, and the width of the outer oil channel 13 gradually increases from the inside to the outside. This structural design can ensure that the outer oil channel 13 includes the inner end opening of the nozzle mounting hole 11 to the greatest extent, ensuring that the grease can accurately enter the outer oil channel 13 through the nozzle 12.

[0037] There is an interference fit between the assembly hole 3 and the bushing 4. This fixing method can not only ensure the stability of the bushing 4 when it is assembled in the assembly hole 3, but also can achieve rapid disassembly and assembly of the bushing 4 only by external force.

[0038] An insertion groove 16 is provided on the inner wall of the upper end of the assembly hole 3, and an upper guide cone 17 which is wide at the top and narrow at the bottom is provided on the bottom of the insertion groove 16. A lower guide cone 18 which is wide at the bottom and narrow at the inside is provided on the inner wall of the lower end of the assembly hole 3. The existence of the upper guide cone 17 facilitates the bushing 4 to be quickly squeezed into the assembly hole 3 when being assembled from top to bottom, and the existence of the lower guide cone 18 facilitates the bushing 4 to be quickly squeezed out of the assembly hole 3 when being disassembled from top to bottom.

[0039] The outer wall of the limit piece 19 is provided with an annular lower limit groove 21, and the lower end of the lower limit part 20 is riveted to the upper groove wall of the lower limit groove 21. The riveting method can firmly fix the limit piece on the lower surface of the bushing 4, so that the ball seat 5 is firmly restricted in the bushing 4 through the limit piece 19, thereby ensuring the stability of the ball 6 during rotation.

[0040] An annular lower positioning groove 22 is provided on the outer wall of the lower end of the lower connecting part 9, the lower end of the lower dust cover 10 is embedded in the lower positioning groove 22, the upper end of the lower dust cover 10 is embedded in the lower limit groove 21, and an annular upper positioning groove 23 is provided on the outer wall of the upper end of the upper connecting part 7. An annular upper limit positioning part 24 is extended upward from the edge of the upper end port of the bushing 4, and an annular upper limit positioning groove 25 is provided on the outer wall of the upper limit positioning part 24. The upper end of the upper dust cover 8 is embedded in the upper positioning groove 23, and the lower end of the upper dust cover 8 is embedded in the upper limit positioning groove 25. This fixing method can not only ensure the dustproof effect, but also ensure that the upper dust cover 8 and the lower dust cover 10 will not interfere with the sphere 6 when it rotates.

[0041] When the grease overflows upward through the elastic notch 15, it will enter the upper limit portion 24, and the inner diameter of the upper limit portion 24 gradually decreases from top to bottom. The upper limit portion 24 can guide the grease back to the gap between the inner wall of the ball seat 5 and the outer wall of the ball 6 through its inner wall which continuously narrows downward.

[0042] A fastening structure is provided on the upper and lower ends of the upper dust cover 8 and the upper and lower ends of the lower dust cover 10. The fastening structure is a steel wire 26 or a retaining spring wrapped with several circles. The existence of the fastening structure can effectively ensure the stability of the upper and lower ends of the upper dust cover 8 and the lower dust cover 10 when they are deformed as the sphere 6 rotates, thereby avoiding the upper dust cover 8 and the lower dust cover 10 from falling off.

Claims

1. A tie rod ball head, comprising a rod body and a connector provided at one end of the rod body, characterized in that: The center of the connector is provided with an assembly hole; a bushing matching therewith is provided in the assembly hole; a ball seat matching therewith is provided in the bushing; a sphere matching therewith is provided in the ball seat; an upper connecting part is provided at the upper end of the sphere, and the upper end of the upper connecting part passes through the ball seat and the upper end opening of the assembly hole in sequence upward; the upper end of the upper connecting part is connected to the upper end of the bushing through an upper dust cover outside the upper end port of the bushing; a lower connecting part is provided at the lower end of the sphere; the lower end of the lower connecting part passes through the ball seat and the lower end opening of the assembly hole in sequence downward ; The lower end of the lower connecting part is connected to the lower end of the bushing through a lower dust cover outside the lower end port of the bushing; the connector is provided with an oil nozzle mounting hole which is connected with its internal space; the oil nozzle mounting hole is screwed with an oil nozzle which matches it; the outer wall of the bushing is provided with an annular outer oil channel, and the position of the outer oil channel corresponds to the position of the oil nozzle mounting hole; the inner wall of the bushing is provided with an annular inner oil channel; the inner oil channel and the outer oil channel are connected through an oil hole; the upper part of the ball seat is provided with a plurality of elastic notches which are evenly distributed around the circumference.

2. A tie rod head according to claim 1, characterized in that: The width of the outer oil passage is greater than the diameter of the oil nozzle mounting hole; and the width of the outer oil passage increases gradually from the inside to the outside.

3. The tie rod head according to claim 1, characterized in that: The assembly hole and the bushing are in interference fit.

4. The tie rod head according to claim 1, characterized in that: The inner wall of the upper end opening of the assembly hole is provided with a snap-in groove; the bottom of the snap-in groove is provided with an upper guide cone surface which is wide at the top and narrow at the bottom; the inner wall of the lower end opening of the assembly hole is provided with a lower guide cone surface which is wide at the bottom and narrow at the inside.

5. The tie rod head according to claim 1, characterized in that: The width of the lower end port of the bushing is greater than that of the upper end port of the bushing, and the ball seat can be inserted into the bushing through the lower end port of the bushing; a limit piece is provided on the lower surface of the bushing to fit with it; the limit piece is annular, and the inner diameter of the limit piece is smaller than the inner diameter of the lower end port of the bushing, and the upper surface of the limit piece fits with the lower surface of the ball seat; an annular lower limit portion is provided on the lower surface of the ball seat; an annular lower limit groove is provided on the outer wall of the limit piece, and the lower end of the lower limit portion is riveted to the upper groove wall of the lower limit groove.

6. A tie rod head according to claim 5, characterized in that: The outer wall of the lower end of the lower connecting part is provided with a lower positioning groove in the shape of an annular shape; the lower end of the lower dust cover is embedded in the lower positioning groove, and the upper end of the lower dust cover is embedded in the lower limit groove; the outer wall of the upper end of the upper connecting part is provided with an upper positioning groove in the shape of an annular shape; the edge of the upper end port of the bushing extends upward to form an upper limit positioning part in the shape of an annular shape; the outer wall of the upper limit positioning part is provided with an upper limit positioning groove in the shape of an annular shape; the upper end of the upper dust cover is embedded in the upper positioning groove, and the lower end of the upper dust cover is embedded in the upper limit positioning groove.

7. The tie rod head according to claim 6, characterized in that: The inner diameter of the upper limit portion decreases gradually from top to bottom.

8. The tie rod head according to claim 6, characterized in that: A fastening structure is disposed outside the upper and lower ends of the upper dust cover and the upper and lower ends of the lower dust cover.

9. The tie rod head according to claim 8, characterized in that: The fastening structure is a steel wire or a clip wound in several turns.

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