CN213323525U - Dustproof and waterproof hub floodgate - Google Patents
Dustproof and waterproof hub floodgate Download PDFInfo
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- CN213323525U CN213323525U CN202022065238.6U CN202022065238U CN213323525U CN 213323525 U CN213323525 U CN 213323525U CN 202022065238 U CN202022065238 U CN 202022065238U CN 213323525 U CN213323525 U CN 213323525U
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- eccentric shaft
- ring
- sealing ring
- friction
- hub brake
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Abstract
The utility model discloses a dustproof and waterproof hub floodgate relates to electric motor car hub floodgate technical field. The protection components are symmetrically sleeved at the two end parts of the eccentric shaft; one protection component is positioned between the inner bottom surface of the hub brake shell and the eccentric cam, and the other protection component is positioned between the outer bottom surface of the hub brake shell and the brake rod; the protection assembly comprises a sealing ring, a limiting ring, a support ring and a plurality of arc-shaped elastic pieces. The utility model can ensure the sealing of the sealing ring to the eccentric shaft hole through the support of the tension of the arc-shaped elastic pieces to the sealing ring; in addition, due to the jacking action of the pressing strips which are uniformly distributed in the annular shape, the sealing ring is prevented from being locally protruded, the sealing property of the eccentric shaft hole is further ensured, and dust and muddy water are prevented from entering the eccentric shaft hole; in addition, a plurality of friction strips are annularly and uniformly distributed on the bottom surface of the support ring, and the side surfaces of the friction strips are semicircular cambered surfaces, so that the friction between the support ring and the brake rod and the friction between the support ring and the eccentric cam are reduced, the friction on the sealing ring is further reduced, and the service life of the sealing ring is prolonged.
Description
Technical Field
The utility model belongs to the technical field of the electric motor car hub floodgate, especially, relate to a dustproof and waterproof hub floodgate.
Background
An eccentric shaft hole is formed in a hub brake shell of a hub brake of the conventional electric tricycle, and an eccentric shaft is rotatably arranged in the eccentric shaft hole; the eccentric cam fixed at one end of the eccentric shaft positioned in the hub brake shell is used for opening the two brake blocks, so that the brake blocks prop against the inner wall of the hub to reach dead points for braking the vehicle; one end of the eccentric shaft extending out of the hub brake shell is fixedly connected with a brake rod.
In practical use, the eccentric shaft needs to rotate back and forth frequently, so that a larger longitudinal gap and a fit gap exist between the eccentric shaft and the eccentric shaft hole, and lubricating oil leaks due to the larger gap and loses the lubricating effect; in addition, due to abrasion generated after long-term use, great dust and muddy water exist in the using environment, the dust enters into the eccentric shaft hole, and the eccentric shaft cannot rotate smoothly and fails.
In order to solve the problem, the utility model provides a dustproof and waterproof hub floodgate.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a dustproof and waterproof hub floodgate for solve the problem that proposes in the background art.
In order to solve the technical problem, the utility model discloses a realize through following technical scheme:
the utility model relates to a dustproof and waterproof hub brake, which comprises a hub brake shell, an eccentric shaft and a brake rod; the hub brake shell is provided with an eccentric shaft hole; the eccentric shaft is rotatably arranged in the eccentric shaft hole; one end of the eccentric shaft is fixed with an eccentric cam, the other end of the eccentric shaft is fixed with a brake rod, and two ends of the eccentric shaft are symmetrically sleeved with protection components; one protection assembly is positioned between the inner bottom surface of the hub brake shell and the eccentric cam, and the other protection assembly is positioned between the outer bottom surface of the hub brake shell and the brake rod;
the protection assembly comprises a sealing ring, a limiting ring, a supporting ring and a plurality of arc-shaped elastic pieces; the limiting ring is connected with the supporting ring through a plurality of arc-shaped elastic pieces; a plurality of friction strips are annularly and uniformly distributed on the bottom surface of the support ring; the sealing ring is sleeved on the eccentric shaft and is attached to the inner bottom surface or the outer bottom surface of the hub brake shell; the edge of one surface of the sealing ring is coaxially provided with a limiting annular notch; the limiting ring is installed in the limiting ring groove in a matching mode.
Preferably, the inner diameter of the support ring is larger than the diameter of the eccentric shaft.
Preferably, the friction bar is located on a diameter of the support ring; the length of the friction strip is smaller than the difference value between the outer radius and the inner radius of the support ring; the side surface of the friction strip is a semicircular cambered surface.
Preferably, a plurality of strip-shaped pressing grooves communicated with the limiting annular notch are uniformly and annularly formed in one surface of the sealing ring; a plurality of pressing strips are annularly and uniformly distributed on the inner wall of the limiting ring; the pressing strips are installed in the strip-shaped pressing grooves in a matching mode.
The utility model discloses an aspect has following beneficial effect:
1. the utility model can ensure the sealing of the sealing ring to the eccentric shaft hole through the support of the tension of the arc-shaped elastic pieces to the sealing ring; in addition, due to the jacking action of the pressing strips which are uniformly distributed in the annular shape, the sealing ring is prevented from being locally protruded, the sealing performance of the eccentric shaft hole is further ensured, and dust and muddy water are prevented from invading into the eccentric shaft hole.
2. The utility model discloses a side at a plurality of friction strips of support ring bottom surface annular equipartition and friction strip is semi-circular cambered surface, reduces the friction of support ring and brake lever and eccentric cam, and then reduces the friction to the sealing washer, prolongs the life of sealing washer.
Of course, it is not necessary for any particular product to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of a dustproof and waterproof hub brake of the present invention;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
FIG. 3 is an enlarged view of A in FIG. 2;
FIG. 4 is a schematic structural view of the protection assembly symmetrically sleeved at two ends of the eccentric shaft according to the present invention;
fig. 5 is a schematic structural view of the hub brake shell of the present invention;
fig. 6 is a schematic structural view of the protection assembly of the present invention;
FIG. 7 is a schematic structural view of the present invention in which the limiting ring and the supporting ring are connected by a plurality of arc-shaped elastic pieces;
fig. 8 is a schematic structural view of the middle seal ring of the present invention;
in the drawings, the components represented by the respective reference numerals are listed below:
1-hub brake shell, 11-eccentric shaft hole, 2-eccentric shaft, 21-eccentric cam, 3-brake rod, 41-sealing ring, 411-limiting annular notch, 412-strip-shaped pressing groove, 42-limiting ring, 421-pressing strip, 43-supporting ring, 431-friction strip and 44-arc elastic sheet.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "open hole", "upper", "middle", "length", "inner", etc. indicate positional or orientational relationships and are merely for convenience of description and simplicity of description, and do not indicate or imply that the referenced component or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
Referring to fig. 1-8, the present invention relates to a dustproof and waterproof hub brake, which comprises a hub brake housing 1, an eccentric shaft 2 and a brake rod 3; an eccentric shaft hole 11 is formed in the hub brake shell 1; the eccentric shaft 2 is rotatably arranged in the eccentric shaft hole 11; one end of the eccentric shaft 2 is fixed with an eccentric cam 21, and the other end of the eccentric shaft 2 is fixed with a brake rod 3; when the brake device is actually used, the brake rod 3 is rotated to drive the eccentric cam 21 to rotate, and the eccentric cam 21 opens the two brake blocks 5, so that the brake blocks 5 prop against the inner wall of the hub 6 to reach dead points for braking a vehicle; however, in practical use, the eccentric shaft 2 needs to rotate back and forth frequently, so that a large longitudinal gap and a large matching gap exist between the eccentric shaft 2 and the eccentric shaft hole 11, and lubricating oil leaks due to the large gap and loses the lubricating effect; in addition, due to abrasion generated after long-term use, large dust and muddy water exist in the use environment, so that the dust invades into the eccentric shaft hole 11, and the eccentric shaft 2 cannot rotate smoothly and fails;
in order to solve the problems, two end parts of the eccentric shaft 2 are symmetrically sleeved with protective components; one protection component is positioned between the inner bottom surface of the hub brake shell 1 and the eccentric cam 21, and the other protection component is positioned between the outer bottom surface of the hub brake shell 1 and the brake rod 3; specifically, the protection assembly comprises a sealing ring 41, a limiting ring 42, a supporting ring 43 and a plurality of arc-shaped elastic sheets 44; the limiting ring 42 is connected with the supporting ring 43 through a plurality of arc-shaped elastic sheets 44; specifically, the support ring 43 is made of a metal sheet or a hard sheet, the inner diameter of the support ring 43 is larger than the diameter of the eccentric shaft 2, generally by a little 2-5mm, and the support ring 43 is prevented from generating large friction on the eccentric shaft 2 to further influence the eccentric shaft 2; a plurality of friction strips 431 are annularly and uniformly distributed on the bottom surface of the support ring 43; in particular, the friction bar 431 is located on the diameter of the support ring 43; the length of the friction bar 431 is less than the difference between the outer radius and the inner radius of the support ring 43; the side surface of the friction strip 431 is a semicircular cambered surface, so that the friction between the support ring 43 and the brake rod 3 and the eccentric cam 21 is reduced, the friction on the sealing ring 41 is further reduced, and the service life of the sealing ring 41 is prolonged; in addition, the sealing ring 41 is supported by the tension of the arc-shaped elastic pieces 44, so that the sealing of the sealing ring 41 on the eccentric shaft hole 11 can be ensured;
the sealing ring 41 is sleeved on the eccentric shaft 2, and the sealing ring 41 is attached to the inner bottom surface or the outer bottom surface of the hub brake shell 1; specifically, a sealing ring 41 of the protection component positioned on the inner bottom surface of the hub brake shell 1 is attached to the inner bottom surface of the hub brake shell 1, and a corresponding sealing ring 41 of the protection component positioned on the outer bottom surface of the hub brake shell 1 is attached to the outer bottom surface of the hub brake shell 1; the edge of one surface of the sealing ring 41 is coaxially provided with a limiting annular notch 411; the limiting ring 42 is arranged in the limiting annular notch 411 in a matching way; in addition, a plurality of strip-shaped pressure grooves 412 communicated with the limiting annular notch 411 are annularly and uniformly distributed on one surface of the sealing ring 41; a plurality of pressing strips 421 are annularly and uniformly distributed on the inner wall of the limiting ring 42; the pressing strip 421 is installed in the strip-shaped pressing groove 412 in a matching manner; the pressing action of the pressing strips 421 uniformly distributed in the ring shape ensures that the sealing ring 41 does not bulge locally, thereby ensuring the sealing performance of the eccentric shaft hole 11 and avoiding dust and muddy water from invading into the eccentric shaft hole 11.
In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.
Claims (4)
1. A dustproof and waterproof hub brake comprises a hub brake shell (1), an eccentric shaft (2) and a brake rod (3); an eccentric shaft hole (11) is formed in the hub brake shell (1); the eccentric shaft (2) is rotatably arranged in the eccentric shaft hole (11); eccentric cam (21) is fixed to eccentric shaft (2) one end, brake lever (3) is fixed to eccentric shaft (2) other end, its characterized in that:
the two end parts of the eccentric shaft (2) are symmetrically sleeved with protective components; one of the protection components is positioned between the inner bottom surface of the hub brake shell (1) and the eccentric cam (21), and the other protection component is positioned between the outer bottom surface of the hub brake shell (1) and the brake rod (3);
the protection assembly comprises a sealing ring (41), a limiting ring (42), a supporting ring (43) and a plurality of arc-shaped elastic sheets (44); the limiting ring (42) is connected with the supporting ring (43) through a plurality of arc-shaped elastic sheets (44); a plurality of friction strips (431) are annularly and uniformly distributed on the bottom surface of the support ring (43);
the sealing ring (41) is sleeved on the eccentric shaft (2) and the sealing ring (41) is attached to the inner bottom surface or the outer bottom surface of the hub brake shell (1); the edge of one surface of the sealing ring (41) is coaxially provided with a limiting annular notch (411); the limiting ring (42) is installed in the limiting annular notch (411) in a matching mode.
2. A dustproof and waterproof hub brake according to claim 1, characterized in that the inner diameter of the support ring (43) is larger than the diameter of the eccentric shaft (2).
3. A dustproof and waterproof hub brake according to claim 1 or 2, characterized in that the friction bar (431) is located on the diameter of the support ring (43); the length of the friction strip (431) is less than the difference between the outer radius and the inner radius of the support ring (43); the side surface of the friction strip (431) is a semicircular cambered surface.
4. A dustproof and waterproof hub brake according to claim 3, characterized in that a plurality of strip-shaped pressure grooves (412) communicated with the limiting annular notch (411) are uniformly distributed on one surface of the sealing ring (41) in an annular manner; a plurality of pressing strips (421) are annularly and uniformly distributed on the inner wall of the limiting ring (42); the pressing strip (421) is installed in the strip-shaped pressing groove (412) in a matching mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022065238.6U CN213323525U (en) | 2020-09-18 | 2020-09-18 | Dustproof and waterproof hub floodgate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022065238.6U CN213323525U (en) | 2020-09-18 | 2020-09-18 | Dustproof and waterproof hub floodgate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213323525U true CN213323525U (en) | 2021-06-01 |
Family
ID=76064798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022065238.6U Active CN213323525U (en) | 2020-09-18 | 2020-09-18 | Dustproof and waterproof hub floodgate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213323525U (en) |
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2020
- 2020-09-18 CN CN202022065238.6U patent/CN213323525U/en active Active
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