A suspension ball joint

Abstract

The application discloses a suspension ball head and belongs to the technical field of suspension ball heads. The suspension ball head comprises a ball shell and a ball head pin, the ball head pin comprises a ball head and a pin rod, a through hole for accommodating the ball head is formed in the ball shell, a ball head seat is arranged at the bottom of the through hole, and the ball head is slidable relative to the ball head seat; the pin rod comprises a first pin rod, a second pin rod and a third pin rod which are sequentially connected with each other, the diameter of the second pin rod is smaller than the diameter of the through hole, the first pin rod, the second pin rod and the third pin rod form an annular groove, and the second pin rod is located above the through hole; the suspension ball head further comprises an anti-falling device; the anti-falling device comprises rotating rods which are symmetrically arranged on the two sides of the ball head pin, one end of each rotating rod is rotationally connected with the ball shell, and the other end of each rotating rod is rotationally connected with a clamping block which can be clamped into the annular groove; and the anti-falling device further comprises a locking device. When the ball head pin is removed from the ball shell due to wear, the suspension ball head can reduce the instability and insecurity caused by the damaged suspension ball head in the process of automobile driving.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of suspension ball head, more particularly, to a suspension ball head. BACKGROUND

[0002] Suspension ball head is used for connecting automobile steering direction device and steering wheel, and is one of the key accessories of automobile steering system. The quality and performance of suspension ball head directly affect the stability and safety of automobile driving.

[0003] The existing suspension ball head rotates in the ball shell, which causes certain abrasion to the ball head part of the ball pin. If the abrasion is too much, the ball pin can easily fall out of the ball shell, resulting in that the suspension ball head cannot be used, and affecting the stability and safety of automobile driving.

[0004] To solve the above technical problems, the present application is committed to providing a new suspension ball head. SUMMARY

[0005] 1. Technical problems to be solved

[0006] In view of the problems in the prior art, the purpose of the present application is to provide a suspension ball head which can reduce the instability and insecurity caused by the damaged suspension ball head during automobile driving when the ball pin is abraded and moved out of the ball shell.

[0007] 2. Technical solutions

[0008] To solve the above problems, the present application adopts the following technical solutions.

[0009] A suspension ball head, comprising a ball shell and a ball pin, the ball pin comprising a ball head and a pin rod, the ball shell being provided with a through hole for accommodating the ball head, a ball head seat being installed at the inner bottom end of the through hole, and the ball head being slidable relative to the ball head seat; the pin rod comprising a first pin rod, a second pin rod and a third pin rod which are connected to each other in sequence, the diameter of the second pin rod being smaller than the diameter of the through hole, the first pin rod, the second pin rod and the third pin rod forming an annular groove, and the second pin rod being located above the through hole; the suspension ball head further comprising a anti-falling device; the anti-falling device comprising rotating rods which are symmetrically arranged on both sides of the ball pin, one end of the rotating rod being rotatably connected to the ball shell, and the other end being rotatably connected to a clamping block which can be clamped into the annular groove; the anti-falling device further comprising a locking device, when the ball head is separated from the through hole on the ball shell, the locking device limits the freedom degree of the clamping block in the vertical direction, and the clamping block is located in the annular groove, so that the pin rod cannot continue to move upward in the vertical direction.

[0010] Further, the cross section shape of the clamping block is a semi-circular ring shape; the locking device comprises two guide rings symmetrically arranged on the outer side of the pin rod, four guide columns fixedly arranged on the outer side of the end of the clamping block, and four first limiting blocks; the guide ring is provided with a guide hole; the guide column passes through the guide hole and is fixed with the first limiting block; the inner diameter of the clamping block is the same as the diameter of the second pin rod; the end of the two clamping blocks close to each other is respectively provided with a first magnetic attraction layer and a second magnetic attraction layer which is attracted to the first magnetic attraction layer; when the ball head is separated from the through hole on the ball shell, the pin rod moves upward, the two clamping block ends are attracted to each other and gradually move into the annular groove to form a circular ring which is sleeved on the second pin rod and located between the first pin rod and the third pin rod.

[0011] Further, the two guide rings are fixed with the guide column on one of the clamping blocks; the top end of the guide hole is provided with a mounting groove, a spring is fixedly installed in the mounting groove, one end of the spring is fixedly installed with a second limiting block, and the second limiting block can move into the mounting groove; the second limiting block has a first inclined surface and a second vertical surface, the first inclined surface is close to the guide column which can move along the guide hole, and the second vertical surface is close to the side fixed with the guide column fixedly connected with the guide ring; when the two clamping block ends are attracted to each other, the guide column which can move along the guide hole moves along the guide hole, which can extrude the first inclined surface to make the second limiting block move into the mounting groove between the guide column fixedly connected with the guide ring and the second limiting block.

[0012] Further, the two clamping block ends form a sleeve ring, the sleeve ring is sleeved on the second pin rod, and the inner diameter of the sleeve ring is the same as the diameter of the second pin rod; the rotating rod comprises a first sleeve and a second sleeve sleeved in the first sleeve, the locking device comprises a boss fixedly installed on the outer side of the bottom end of the second sleeve and a moving groove provided in the inner side wall of the bottom end of the first sleeve and used for the movement of the boss, and the length direction of the moving groove is the same as the length direction of the first sleeve.

[0013] Further, the top end of the ball shell is provided with a rotating ring which can rotate relative to the ball shell, the rotating ring is sleeved on the outer side of the pin rod, and the bottom end of the rotating rod is rotatably connected to the rotating ring.

[0014] Further, it further comprises a dust cover which is sleeved on the first pin rod and covers the top of the ball shell, and the anti-falling device is located in the dust cover.

[0015] 3. Beneficial effects

[0016] Compared with the prior art, the advantages of the present application are:

[0017] (1) By setting up an anti-detachment device, the present invention can reduce the instability and insecurity caused by the damaged suspension ball joint during vehicle operation when the ball joint pin is worn out and moves out of the ball shell.

[0018] (2) In Embodiment 1 of the present invention, the safety of the anti-detachment device is improved by setting the second limiting block, and further, the instability and insecurity caused by the damaged suspension ball joint during the vehicle's operation are reduced.

[0019] (3) In Embodiment 1 of the present invention, by setting a guide ring and a guide post, the ends of the two blocks are always opposite each other. When the ball head pin is worn and moves out of the ball shell, the two blocks can move smoothly into the annular groove under the action of the first magnetic attraction layer and the second magnetic attraction layer that attract each other, thereby improving the accuracy of the anti-detachment device. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the present invention;

[0021] Figure 2 This is a partial cross-sectional view of the present invention;

[0022] Figure 3 This is a cross-sectional view of the anti-detachment device in Embodiment 1 of the present invention, showing that the locking block is not engaged in the annular groove;

[0023] Figure 4 This is a cross-sectional view of the anti-detachment device in Embodiment 1 of the present invention, showing the locking block inserted into the annular groove;

[0024] Figure 5 This is a partial structural diagram of the present invention;

[0025] Figure 6 For the present invention Figure 5 Schematic diagram of the structure at point A;

[0026] Figure 7 For the present invention Figure 5 A top-view structural diagram;

[0027] Figure 8 This is a schematic diagram of the rotating rod in Embodiment 2 of the present invention.

[0028] Explanation of the labels in the diagram:

[0029] 1. Spherical shell, 1-1. Rotating ring, 2. Ball head pin, 21. Ball head, 22. Pin, 22a. First pin, 22b. Second pin, 22c. Third pin, 22d. Annular groove.

[0030] 3 ball head seat, 4 anti - fall device, 4-1 rotating rod, 4-1-1 first sleeve, 4-1-1a moving groove, 4-1-2 second sleeve, 4-1-2a boss, 4-2 block, 4-3 guide ring, 4-3a guide hole, 4-4 guide column, 4-5 first limit block, 4-6 second limit block, 4-6a first inclined surface, 4-6b second vertical surface, 5 dust cover. DETAILED DESCRIPTION

[0031] Example 1: please refer to Figures 1-7 A suspension ball head, comprising a ball shell 1 and a ball pin 2, the ball pin 2 comprising a ball head 21 and a pin rod 22, the ball shell 1 having a through hole accommodating the ball head 21, a ball head seat 3 being installed at the inner bottom end of the through hole, the ball head 21 being slidable relative to the ball head seat 3; the pin rod 22 comprising a first pin rod 22a, a second pin rod 22b and a third pin rod 22c connected to each other in sequence, the second pin rod 22b having a smaller diameter than the diameter of the through hole, the first pin rod 22a, the second pin rod 22b and the third pin rod 22c forming an annular groove 22d, the second pin rod 22b being located above the through hole; the central axes of the first pin rod 22a, the second pin rod 22b and the third pin rod 22c coincide.

[0032] The suspension ball head further comprises an anti-falling device 4; the anti-falling device 4 comprises a rotating rod 4-1 symmetrically arranged on both sides of the ball pin 2, one end of the rotating rod 4-1 being rotatably connected with the ball shell 1, the other end being rotatably connected with a block 4-2 capable of being clamped into the annular groove 22d; the anti-falling device 4 further comprises a locking device, when the ball head 21 is separated from the through hole on the ball shell 1, the locking device limits the freedom of the block 4-2 in the vertical direction, and the block 4-2 is located in the annular groove 22d, so that the pin rod 22 cannot continue to move upward in the vertical direction.

[0033] Further comprising a dust cover 5, the dust cover 5 being sleeved on the first pin rod 22a and covering the top of the ball shell 1, the anti-falling device 4 being located in the dust cover 5, one end of the dust cover 5 being fastened on the upper part of the ball pin 2 by a clamp spring, the other end being clamped on the top end of the ball shell 1 by a snap spring 6, the dust cover 5 preventing dust from entering the through hole and preventing dust from affecting the rotation of the ball pin 2 relative to the ball seat 3.

[0034] The suspension ball head further comprises a bottom cover, the bottom cover being installed at the bottom of the through hole of the ball shell 1 to press the ball seat 3 tightly in the ball shell 1.

[0035] The card block 4-2 is semicircular in cross section; the locking device comprises two guide rings 4-3 symmetrically arranged outside the pin rod 22, four guide columns 4-4 fixedly arranged outside the end of the card block 4-2, and four first limiting blocks 4-5; the guide ring 4-3 is provided with a guide hole 4-3a; the guide column 4-4 passes through the guide hole 4-3a and is fixed with the first limiting block 4-5; the inner diameter of the card block 4-2 is the same as the diameter of the second pin rod 22b; the end of each of the two card blocks 4-2 close to each other is provided with a first magnetic attraction layer and a second magnetic attraction layer attracted to the first magnetic attraction layer; the distance between the first pin rod 22a and the third pin rod 22c is greater than the thickness of the card block 4-2.

[0036] When the ball head 21 is still in the through hole on the spherical shell 1, the ends of the two card blocks 4-2 are attracted to each other by the first magnetic attraction layer and the second magnetic attraction layer, so that the ends of the card blocks 4-2 are tightly attached to the outer wall of the first pin rod 22a;

[0037] When the ball head 21 is worn out, when the pin rod 22 moves upward, the ball head 21 is separated from the through hole on the spherical shell 1, the ends of the two card blocks 4-2 are attracted to each other and gradually move into the annular groove 22d and form a circular ring set on the outer wall of the second pin rod 22b and located between the first pin rod 22a and the third pin rod 22c, when the pin rod 22 continues to move upward, the pin rod 22 cannot continue to move upward relative to the spherical shell 1 under the limitation of the anti-falling device 4, avoiding the insecurity caused by the ball head pin falling out of the spherical shell during driving.

[0038] Both guide rings 4-3 are fixed with the guide column 4-4 on one of the card blocks 4-2; the top end of the guide hole 4-3a is provided with a mounting groove, a spring is fixedly installed in the mounting groove, one end of the spring is fixedly installed with a second limiting block 4-6, and the second limiting block 4-6 can be moved into the mounting groove; the second limiting block 4-6 has a first inclined surface 4-6a and a second vertical surface 4-6b, the first inclined surface 4-6a is close to the side of the guide column 4-4 that can move along the guide hole 4-3a, and the second vertical surface 4-6b is close to the side of the guide column 4-4 fixedly connected with the guide ring 4-3.

[0039] When the ball head 21 is worn, the pin rod 22 moves upward, the ball head 21 is separated from the through hole on the ball shell 1, and the two clamping blocks 4-2 are adsorbed to each other. When the guide column 4-4 movable along the guide hole 4-3a moves along the guide hole 4-3a, the first inclined surface 4-6a can be squeezed to make the second limiting block 4-6 move into the mounting groove, and move between the guide column 4-4 fixedly connected with the guide ring 4-3 and the second limiting block 4-6, so that the two clamping blocks 4-2 cannot be separated from the annular groove 22d, further, the two clamping blocks 4-2 are prevented from being separated, the anti-disengagement device 4 is further limited to the upward movement of the pin rod 22 relative to the ball shell 1, thereby avoiding the insecurity caused by the ball head pin falling out of the ball shell during driving of the automobile.

[0040] When the guide column 4-4 movable along the guide hole 4-3a moves along the guide hole 4-3a, the first inclined surface 4-6a can be squeezed to make the second limiting block 4-6 move into the mounting groove, and move between the guide column 4-4 fixedly connected with the guide ring 4-3 and the second limiting block 4-6, when the guide column 4-4 movable along the guide hole 4-3a is squeezed along the guide hole 4-3a, the second vertical surface 4-6b, the second limiting block 4-6 cannot be squeezed to move into the mounting groove.

[0041] The top end of the ball shell 1 is provided with a rotating ring 1-1 which can rotate relative to the ball shell 1, the rotating ring 1-1 is sleeved on the outside of the pin rod 22, the bottom end of the rotating rod 4-1 is rotatably connected to the rotating ring 1-1, the central axis of the rotating ring 1-1, the central axes of the first pin rod 22a, the second pin rod 22b and the third pin rod 22c coincide, so that when the clamping block 4-2 is clamped into the annular groove 22d, the circular ring formed by the two clamping blocks 4-2 can rotate along the central axis.

[0042] Embodiment 2: please refer to Figures 1-3 and Figure 8 A suspension ball head, comprising a ball shell 1 and a ball head pin 2, the ball head pin 2 comprising a ball head 21 and a pin rod 22, the ball shell 1 is provided with a through hole for accommodating the ball head 21, a ball head seat 3 is installed at the inner bottom of the through hole, and the ball head 21 can slide relative to the ball head seat 3; the pin rod 22 comprises a first pin rod 22a, a second pin rod 22b and a third pin rod 22c connected in sequence, the diameter of the second pin rod 22b is smaller than the diameter of the through hole, the first pin rod 22a, the second pin rod 22b and the third pin rod 22c form an annular groove 22d, and the second pin rod 22b is located above the through hole.

[0043] The suspension ball head further comprises a anti-falling device 4; the anti-falling device 4 comprises rotating rods 4-1 symmetrically arranged on both sides of the ball head pin 2, one end of the rotating rod 4-1 is rotationally connected with the ball shell 1, and the other end is rotationally connected with a clamping block 4-2 which can be clamped into the annular groove 22d; the anti-falling device 4 further comprises a locking device, when the ball head 21 is separated from the through hole on the ball shell 1, the locking device limits the freedom of the clamping block 4-2 in the vertical direction, and the clamping block 4-2 is located in the annular groove 22d, so that the pin rod 22 cannot continue to move upward in the vertical direction.

[0044] The difference between the present embodiment 2 and the embodiment 1 is that, referring to Figures 1-7 When the ball head 21 is worn out and the ball head 21 is still in the through hole on the ball shell 1, the two ends of the clamping block 4-2 of the present embodiment 2 form a sleeve ring, the sleeve ring is sleeved on the second pin rod 22b, and the inner diameter of the sleeve ring is the same as the diameter of the second pin rod 22b; the rotating rod 4-1 comprises a first sleeve 4-1-1 and a second sleeve 4-1-2 sleeved in the first sleeve 4-1-1, and the locking device comprises a boss 4-1-2a fixedly installed on the outer side of the bottom end of the second sleeve 4-1-2 and a moving groove 4-1-1a opened on the inner side wall of the bottom end of the first sleeve 4-1-1 and used for the movement of the boss 4-1-2a, and the length direction of the moving groove 4-1-1a is the same as the length direction of the first sleeve 4-1-1.

[0045] When the ball head 21 is worn out and the pin rod 22 moves upward, the ball head 21 is separated from the through hole on the ball shell 1, the boss 4-1-2a in the locking device moves along the moving groove 4-1-1a, and when the boss 4-1-2a cannot continue to move along the moving groove 4-1-1a, the pin rod 22 cannot continue to move upward relative to the ball shell 1 under the limitation of the anti-falling device 4, thereby avoiding the insecurity caused by the falling of the ball head pin from the ball shell during the driving of the automobile.

[0046] The top end of the ball shell 1 is provided with a rotating ring 1-1 which can rotate relative to the ball shell 1, the rotating ring 1-1 is sleeved outside the pin rod 22, the bottom end of the rotating rod 4-1 is rotationally connected with the rotating ring 1-1, and the central axis of the rotating ring 1-1, the central axes of the first pin rod 22a, the second pin rod 22b and the third pin rod 22c coincide, so that when the clamping block 4-2 is clamped into the annular groove 22d, the sleeve ring formed by the two clamping blocks 4-2 can rotate along the central axis thereof.

[0047] Also included is a dust cover 5, which is sleeved on the first pin rod 22a and covers the top of the spherical shell 1. The anti-disengagement device 4 is located in the dust cover 5. One end of the dust cover 5 is fastened to the upper part of the ball head pin 2 by a hoop spring, and the other end is clamped to the top end of the spherical shell 1 by a snap spring 6. The dust cover 5 prevents dust from entering the through hole and prevents dust from affecting the rotation of the ball head pin 2 relative to the ball seat 3.

[0048] The hanging ball head also includes a bottom cover, which is installed at the bottom of the through hole of the spherical shell 1 to press the ball seat 3 tightly in the spherical shell 1.

Claims

1. A suspended ball joint, comprising a ball shell (1) and a ball pin (2), wherein the ball pin (2) comprises a ball head (21) and a pin rod (22), wherein the ball shell (1) has a through hole for accommodating the ball head (21), and a ball head seat (3) is installed at the bottom end of the through hole, wherein the ball head (21) is slidable relative to the ball head seat (3); characterized in that: The pin (22) includes a first pin (22a), a second pin (22b) and a third pin (22c) connected in sequence. The diameter of the second pin (22b) is smaller than the diameter of the through hole. The first pin (22a), the second pin (22b) and the third pin (22c) form an annular groove (22d). The second pin (22b) is located above the through hole. The suspension ball head also includes an anti-detachment device (4); the anti-detachment device (4) includes a rotating rod (4-1) symmetrically arranged on both sides of the ball head pin (2), one end of the rotating rod (4-1) is rotatably connected to the ball shell (1), and the other end is rotatably connected to a locking block (4-2) that can be inserted into the annular groove (22d). The anti-detachment device (4) also includes a locking device. When the ball head (21) is disengaged from the through hole on the ball shell (1), the locking device restricts the vertical freedom of the locking block (4-2), and the locking block (4-2) is located in the annular groove (22d), so that the pin (22) cannot continue to move upward in the vertical direction. The locking device includes two guide rings (4-3) symmetrically distributed on the outer side of the peripheral wall of the pin (22), four guide posts (4-4) fixedly set on the outer side of the end of the locking block (4-2), and four first limiting blocks (4-5). The guide ring (4-3) has a guide hole (4-3a); the guide post (4-4) passes through the guide hole (4-3a) and is fixed to the first limiting block (4-5); Both guide rings (4-3) are fixed to the guide post (4-4) on one of the locking blocks (4-2); the top end of the guide hole (4-3a) is provided with an installation groove, a spring is fixedly installed in the installation groove, and a second limiting block (4-6) is fixedly installed at one end of the spring. The second limiting block (4-6) can move into the installation groove; the second limiting block (4-6) has a first inclined surface (4-6a) and a second vertical surface (4-6b). The first inclined surface (4-6a) is close to the side of the guide post (4-4) that can move along the guide hole (4-3a), and the second vertical surface (4-6b) is close to the side of the guide post (4-4) that is fixedly connected to the guide ring (4-3); When the ends of the two locking blocks (4-2) attract each other, the guide post (4-4) that can move along the guide hole (4-3a) can press the first inclined surface (4-6a) to move the second limiting block (4-6) into the mounting groove, and move between the guide post (4-4) and the second limiting block (4-6) that are fixedly connected to the guide ring (4-3).

2. A suspended ball joint according to claim 1, characterized in that: The cross-sectional shape of the card block (4-2) is a semi-circular ring; The inner diameter of the card block (4-2) is the same as the diameter of the second pin (22b); the ends of the two card blocks (4-2) that are close to each other are respectively provided with a first magnetic layer and a second magnetic layer that is attracted to the first magnetic layer; When the ball head (21) disengages from the through hole on the ball shell (1), the pin (22) moves upward, and the ends of the two locking blocks (4-2) attract each other and gradually move into the annular groove (22d) to form a ring that is sleeved on the peripheral wall of the second pin (22b) and located between the first pin (22a) and the third pin (22c).

3. A suspended ball joint according to claim 2, characterized in that: The two locking blocks (4-2) form a collar at their ends, which is fitted onto the second pin (22b). The inner diameter of the collar is the same as the diameter of the second pin (22b). The rotating rod (4-1) includes a first sleeve (4-1-1) and a second sleeve (4-1-2) fitted inside the first sleeve (4-1-1). The locking device includes a boss (4-1-2a) fixedly installed on the outer side of the bottom end of the second sleeve (4-1-2) and a moving groove (4-1-1a) opened on the inner side wall of the bottom end of the first sleeve (4-1-1) for the boss (4-1-2a) to move. The length direction of the moving groove (4-1-1a) is the same as the length direction of the first sleeve (4-1-1).

4. A suspended ball joint according to any one of claims 1-3, characterized in that: The top of the spherical shell (1) is provided with a rotating ring (1-1) that can rotate relative to the spherical shell (1). The rotating ring (1-1) is sleeved on the outside of the pin (22), and the bottom end of the rotating rod (4-1) is rotatably connected to the rotating ring (1-1).

5. A suspended ball joint according to claim 1, characterized in that: It also includes a dust cover (5), which is fitted on the first pin (22a) and covers the top of the spherical shell (1), and the anti-detachment device (4) is located inside the dust cover (5).

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