Automobile windscreen wiper ball head with high smoothness

Abstract

The utility model relates to the technical field of automobile windscreen wipers, in particular to an automobile windscreen wiper ball head with high smoothness, which comprises a first ball head part, a second ball head part is arranged above the first ball head part, a group of bumps are arranged on the upper surface of the first ball head part, a plurality of groups of first mounting grooves are arranged on the lower surface of the second ball head part, and a covering cap is arranged above a nut. The set of protruding blocks extend into the set of first installation grooves, then the nut and the first installation rod are screwed and fastened, and fixing of the first ball head part and the second ball head part is completed. When the driver side connecting rod and the co-driver side connecting rod extrude each other, one group of bumps can be combined with the other group of first mounting grooves which are shallower in depth, so that the driver side connecting rod and the co-driver side connecting rod cannot extrude each other, the first ball head part and the second ball head part cannot shake each other, and the service life of the ball head is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile windshield wipers, in particular to an automobile windshield wiper ball head with high finish. Background Art

[0002] The wiper is an important accessory installed on the windshield. Its function is to sweep away the rain, snow and dust on the windshield that obstructs the view. Therefore, it plays an important role in driving safety. The vehicle's wiper system usually includes a drive assembly, which is used to provide power for the wiper system. The drive assembly is generally arranged between the driver's side and the passenger side. The drive assembly includes a motor and a reduction mechanism. The motor and the reduction mechanism are fixed to the vehicle body through a motor housing and a gear box respectively.

[0003] The drive assembly also includes a crank, which is used to output rotational motion and ultimately drive the wiper blade of the wiper system to perform reciprocating swinging motion. Connected to the drive assembly is a connecting rod assembly, which includes a driver-side connecting rod and a passenger-side connecting rod. The crank is connected through a double ball head and drives the driver-side connecting rod and the passenger-side connecting rod.

[0004] For example, the authorization announcement number "CN207157170U" is named a car wiper system ball head. Although the axial distance between the first ball head and the second ball head can be effectively adjusted by the cooperation of the adjustment nut and the spring, thereby ensuring that the driver's side connecting rod and the passenger side connecting rod will no longer be squeezed against each other during installation. However, the first ball head and the second ball head are pressed against each other by the spring. When the first spring is not elastic enough, the first ball head and the second ball head will shake against each other, which reduces the service life of the ball head. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and provides a car windshield wiper ball head with high finish.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] The design has a high-smoothness automobile wiper ball head, including a first ball head portion, a first mounting rod is provided on the upper surface of the first ball head portion, a second mounting rod is provided on the lower surface of the first ball head portion, a second ball head portion is provided above the first ball head portion, a through hole is provided on the surface of the second ball head portion, the upper end of the first mounting rod passes through the through hole and is threadedly connected with a nut, a group of protrusions is provided on the upper surface of the first ball head portion, and the heights of the multiple protrusions are the same, a plurality of groups of first mounting grooves are provided on the lower surface of the second ball head portion, the depths of the first mounting grooves in the same group are the same, the depths of the multiple groups of the first mounting grooves are different, and the multiple groups of the first mounting grooves are matched with a group of protrusions, a covering cap is provided above the nut, a second mounting groove is provided on the lower surface of the covering cap, and the inner wall of the second mounting groove is threadedly connected to the first mounting rod.

[0008] Preferably, the covering cap consists of a cap bottom and a cap top, the outer contour of the cap top is a hemisphere, and the cross-section of the outer surface of the cap bottom is a regular hexagon.

[0009] Preferably, a third mounting groove is provided in an annular shape on the upper surface of the second ball head, and a first additional block is provided in an annular shape on the lower surface of the nut, and the first additional block matches the third mounting groove.

[0010] Preferably, a first rubber pad is provided on the lower inner wall of the third mounting groove.

[0011] Preferably, a second additional block is provided in an annular shape on the lower surface of the first ball head, and a second rubber pad is provided between the second additional block and the second mounting rod.

[0012] Preferably, the number of the protrusions in a group is four, and the plurality of protrusions are evenly arranged in an annular shape on the upper surface of the first ball head.

[0013] The utility model provides a car wiper ball head with high finish, and the beneficial effect is that a set of protrusions are inserted into a set of first mounting grooves, and then the nut and the first mounting rod are screwed and tightened to complete the fixation of the first ball head and the second ball head. When it is found that the driver's side connecting rod and the passenger side connecting rod are squeezed against each other, a set of protrusions can be combined with another set of first mounting grooves with a shallower depth to ensure that the driver's side connecting rod and the passenger side connecting rod will not be squeezed, and the first ball head and the second ball head will not shake against each other, thereby extending the service life of the ball head. At the same time, a cover cap is provided to prevent the first mounting rod from being exposed to the outside, and to prevent dust and oil stains from entering the second ball head through the gap between the nut and the first mounting rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional assembly diagram of the utility model;

[0015] Figure 2 It is a structural schematic diagram of the nut of the utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the cover cap of the utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the second ball head and the third mounting groove of the utility model;

[0018] Figure 5 This is a structural schematic diagram of the second ball head and the first mounting groove of the utility model;

[0019] Figure 6 It is a structural schematic diagram of the first ball head of the utility model.

[0020] In the figure: a first ball head 1, a first mounting rod 2, a second mounting rod 3, a second ball head 4, a through hole 5, a nut 6, a protrusion 7, a first mounting groove 8, a covering cap 9, a cap bottom 901, a cap top 902, a second mounting groove 10, a third mounting groove 11, a first additional block 12, a first rubber pad 13, a second additional block 14, and a second rubber pad 15. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] Reference Figure 1-6 , with a high finish, the automobile wiper ball head comprises a first ball head 1, a first mounting rod 2 is arranged on the upper surface of the first ball head 1, a second mounting rod 3 is arranged on the lower surface of the first ball head 1, and the second mounting rod 3 is used to connect the crank. A second ball head 4 is arranged above the first ball head 1, a through hole 5 is arranged on the surface of the second ball head 4, the upper end of the first mounting rod 2 passes through the through hole 5 and is threadedly connected with a nut 6, a group of protrusions 7 are arranged on the upper surface of the first ball head 1, and the heights of the multiple protrusions 7 are the same, and the number of the protrusions 7 arranged in a group is four, and the multiple protrusions 7 are evenly arranged in an annular shape on the upper surface of the first ball head 1, so that the protrusions 7 are evenly stressed, ensuring that the first ball head 1 and the second ball head 4 are more firmly connected.

[0023] The lower surface of the second ball head 4 is provided with multiple groups of first mounting grooves 8, and the depths of the first mounting grooves 8 in the same group are the same, which can ensure that the multiple protrusions 7 correspond to the multiple first mounting grooves 8 in one group, and each protrusion 7 is completely fitted with the first mounting groove 8. The depths of the multiple groups of first mounting grooves 8 are different, and the depth of each group of first mounting grooves 8 is different, which can adjust the distance between the first ball head 1 and the second ball head 4. The multiple groups of first mounting grooves 8 are matched with a group of protrusions 7. A cover cap 9 is provided above the nut 6. The lower surface of the cover cap 9 is provided with a second mounting groove 10. The inner wall of the second mounting groove 10 is threadedly connected with the first mounting rod 2. The cover cap 9 is composed of a cap bottom 901 and a cap top 902. The outer contour of the cap top 902 is a hemisphere, and the hemisphere is not easy to accumulate dust and oil stains. The cross-section of the outer surface of the cap bottom 901 is a regular hexagon, which is convenient for using a wrench to screw the cap bottom 901.

[0024] A third mounting groove 11 is provided in an annular manner on the upper surface of the second ball head 4, and a first additional block 12 is provided in an annular manner on the lower surface of the nut 6. The first additional block 12 matches the third mounting groove 11, and a first rubber pad 13 is provided on the lower inner wall of the third mounting groove 11. The first rubber pad 13 serves to increase the sealing performance. The depth of the third mounting groove 11 is greater than the height of the first additional block 12. The cooperation between the first additional block 12 and the third mounting groove 11 prevents dust and oil stains from entering the interior of the second ball head 4 from the gap between the nut 6 and the upper surface of the first ball head 1.

[0025] A second additional block 14 is provided in an annular shape on the lower surface of the first ball head 1, and a second rubber pad 15 is provided between the second additional block 14 and the second mounting rod 3, wherein the thickness of the second rubber pad 15 is greater than the height of the second additional block 14. The second additional block 14 plays a role in accommodating the second rubber pad 15 and preventing the second rubber pad 15 from shifting.

[0026] Working principle: a set of protrusions 7 are inserted into a set of first mounting grooves 8, and then the nut 6 is screwed and tightened with the first mounting rod 2 to complete the fixation of the first ball head 1 and the second ball head 4. When it is found that the driver's side connecting rod and the passenger side connecting rod are squeezed against each other, a set of protrusions 7 can be combined with another set of first mounting grooves 8 with a shallower depth to ensure that the driver's side connecting rod and the passenger side connecting rod will not be squeezed, and the first ball head 1 and the second ball head 4 will not shake against each other, thereby extending the service life of the ball head. At the same time, a cover cap 9 is set to prevent the first mounting rod 2 from being exposed to the outside, and to prevent dust and oil stains from entering the second ball head 4 from the gap between the nut 6 and the first mounting rod 2.

[0027] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A car wiper ball head with high finish, comprising a first ball head (1), characterized in that: A first mounting rod (2) is provided on the upper surface of the first ball head (1), a second mounting rod (3) is provided on the lower surface of the first ball head (1), a second ball head (4) is provided above the first ball head (1), a through hole (5) is provided on the surface of the second ball head (4), the upper end of the first mounting rod (2) passes through the through hole (5) and is threadedly connected to a nut (6), a group of protrusions (7) is provided on the upper surface of the first ball head (1), and the heights of the plurality of protrusions (7) are the same, a plurality of groups of first mounting grooves (8) are provided on the lower surface of the second ball head (4), the depths of the first mounting grooves (8) in the same group are the same, the depths of the plurality of groups of the first mounting grooves (8) are different, and the plurality of groups of the first mounting grooves (8) are matched with a group of protrusions (7), a cover cap (9) is provided above the nut (6), a second mounting groove (10) is provided on the lower surface of the cover cap (9), and the inner wall of the second mounting groove (10) is threadedly connected to the first mounting rod (2).

2. The automobile wiper ball head with high finish according to claim 1, characterized in that: The covering cap (9) is composed of a cap bottom (901) and a cap top (902); the outer contour of the cap top (902) is a hemisphere, and the cross-section of the outer surface of the cap bottom (901) is a regular hexagon.

3. The automobile wiper ball head with high finish according to claim 1, characterized in that: A third mounting groove (11) is provided in an annular manner on the upper surface of the second ball head (4), and a first additional block (12) is provided in an annular manner on the lower surface of the nut (6), wherein the first additional block (12) matches the third mounting groove (11).

4. The automobile wiper ball head with high finish according to claim 3, characterized in that: A first rubber pad (13) is provided on the lower inner wall of the third installation groove (11).

5. The automobile wiper ball head with high finish according to claim 1, characterized in that: A second additional block (14) is provided in an annular shape on the lower surface of the first ball head (1), and a second rubber pad (15) is provided between the second additional block (14) and the second mounting rod (3).

6. The automobile wiper ball head with high finish according to claim 1, characterized in that: The number of the protrusions (7) provided in a group is four, and the plurality of protrusions (7) are evenly arranged in an annular shape on the upper surface of the first ball head (1).

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