Roller structure

Abstract

The utility model provides a kind of roller structure, including fixed part (1), it is characterized by: the outer periphery of the fixed part (1) is fixed with inner ring (2), roller (3) is rotatably set in the outer periphery of fixed part (1) and inner ring (2), and the outer wall of the inner ring (2) and the inner wall of the roller (3) are filled with lubricating oil or lubricating grease;By setting the inner ring and fixed part fixed with each other, and the outer periphery of the roller is rotatably sheathed in fixed part and inner ring, to replace the bearing roller structure in the prior art, strong impact resistance, stable in the process of rotation, effectively prolong service life.

Description

Technical Field

[0001] This utility model belongs to the technical field of household appliance accessories, specifically relating to a roller structure. Background Technology

[0002] Roller structures have been widely used in the field of home appliances. For example, roller structures are used in the process of pushing and pulling the internal drawers of refrigerators and the feed drawers of washing machines (used to put in laundry detergent or liquid detergent). The roller structure reduces friction and makes it easier to push and pull the home appliances.

[0003] In the prior art, roller structures are often implemented using bearing structures. The roller is fixedly connected to the outer ring of the bearing, while the fixing part is fixedly connected to the inner ring of the bearing. Rollers arranged between the inner and outer rings of the bearing are used to make the roller roll around the outer circumference of the fixing part.

[0004] However, bearing structures have drawbacks such as poor impact resistance, short lifespan, high installation accuracy requirements, difficult installation, and relatively high cost.

[0005] Therefore, there is an urgent need to provide a new solution to address the defects and shortcomings of the existing technologies. Utility Model Content

[0006] In order to overcome the defects and shortcomings of the existing technology, this utility model provides a roller structure.

[0007] The technical solution provided by this utility model is as follows:

[0008] A roller structure includes a fixing member, characterized in that: an inner ring is fixed to the outer periphery of the fixing member, and a roller is rotatably sleeved on the outer periphery of the fixing member and the inner ring, and lubricating oil or grease is filled between the outer wall of the inner ring and the inner wall of the roller.

[0009] As a further preferred embodiment of the present invention, the fixing member includes a top cover, a limiting part, a fitting part and a fixing part that are fixedly connected from top to bottom, and the outer diameter of the top cover is larger than the outer diameter of the limiting part, the outer diameter of the limiting part is larger than the outer diameter of the fitting part, and the outer diameter of the fitting part is larger than the outer diameter of the fixing part.

[0010] As a further preferred embodiment of the present invention, the top cover is located on top of the roller and a cross groove is provided on the top of the top cover.

[0011] In a further preferred embodiment of the present invention, the limiting part is located inside the roller and the limiting part is located at the top of the inner ring.

[0012] As a further preferred embodiment of the present invention, the fitting part is located inside the inner ring and the bottom of the fitting part is flush with the bottom of the inner ring.

[0013] As a further preferred embodiment of the present invention, the fixing part extends from the bottom of the roller and the outer side of the fixing part is provided with external threads.

[0014] As a further preferred embodiment of this utility model, the inner ring is fixed to the outer periphery of the fastener by an interference fit.

[0015] As a further preferred embodiment of this utility model, the outer wall of the inner ring is recessed and has an oil storage groove.

[0016] As a further preferred embodiment of the present invention, the outer wall of the inner ring is fixed with a zinc-plated coating.

[0017] As a further preferred embodiment of the present invention, the inner and outer wheels of the roller are uniformly and fixedly connected with several reinforcing ribs at equal intervals.

[0018] Compared with the prior art, the beneficial effects achieved by this utility model include:

[0019] 1) This utility model provides a roller structure, which replaces the bearing roller structure in the prior art by setting an inner ring and a fixing member that are fixed to each other, and rotatably fitting the roller around the outer periphery of the fixing member and the inner ring. It has strong impact resistance, stable rotation process, and effectively extends service life.

[0020] 2) This utility model provides a roller structure that does not have an inner bearing ring, an outer bearing ring, or a roller between the two. It only requires fixing the fixing member to the inner ring and rotating the roller to the outer circumference of the fixing member and the inner ring. The axial positioning effect of the roller is achieved through the fixing member and the inner ring. The installation accuracy requirement is low, and the installation is convenient and reliable.

[0021] 3) This utility model provides a roller structure that can effectively save costs compared to the bearing structure in the prior art. Attached Figure Description

[0022] Figure 1 A three-dimensional structural view of the roller structure provided by this utility model;

[0023] Figure 2 This is a side view of the roller structure provided by this utility model;

[0024] Figure 3 This is a top view of the roller structure provided by this utility model;

[0025] Figure 4 Exploded view of the roller structure provided by this utility model;

[0026] Figure 5 This is a cross-sectional view of the roller structure provided by this utility model. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] [First Embodiment]

[0031] like Figure 1-5 The image shown is a roller structure provided in the first embodiment of this utility model, as follows: Figure 1-5 As shown, it includes a fixing member 1, which can be a structure similar to screws or bolts in the mechanical field. The improvement of this embodiment compared with the prior art is that: an inner ring 2 is fixed on the outer periphery of the fixing member 1, and a roller 3 is rotatably sleeved on the outer periphery of the fixing member 1 and the inner ring 2. Lubricating oil or grease is filled between the outer wall of the inner ring 2 and the inner wall of the roller 3. By setting the inner ring and the fixing member that are fixed to each other, and the roller is rotatably sleeved on the outer periphery of the fixing member and the inner ring, the bearing roller structure in the prior art is replaced, which has strong impact resistance, stable rotation process, and effectively extends service life.

[0032] like Figure 4-5 As shown, the fastener 1 in this embodiment includes a top cover 11, a limiting part 12, a fitting part 13 and a fixing part 14 that are fixedly connected from top to bottom. The outer diameter of the top cover 11 is larger than the outer diameter of the limiting part 12, the outer diameter of the limiting part 12 is larger than the outer diameter of the fitting part 13, and the outer diameter of the fitting part 13 is larger than the outer diameter of the fixing part 14.

[0033] in,

[0034] The top cover 11 is located on top of the roller 3 and a cross groove 111 is provided on the top of the top cover 11. The top cover 11 is located on top of the roller 3 to achieve axial top positioning of the roller 3. The cross groove 111 facilitates the rotation and tightening of the fastener 1 to the installation position by using a corresponding Phillips screwdriver. According to the needs of the actual use scenario, those skilled in the art should understand that the cross groove 111 can also be replaced with other shaped grooves, such as a slotted groove.

[0035] The limiting part 12 is located inside the roller 3 and at the top of the inner ring 2, so that the limiting part 12 is close to the inner wall of the roller 3 in the radial direction. The limiting part 12 being at the top of the inner ring 2 can limit the axial top of the inner ring 2 fixed to the outer periphery of the fixing member 1.

[0036] The fitting part 13 is located inside the inner ring 2 and the bottom of the fitting part 13 is flush with the bottom of the inner ring 2, thereby facilitating the axial bottom of the inner ring 2 to be fixed to the outer periphery of the fastener 1.

[0037] The fixing part 14 extends from the bottom of the roller 3 and the outer side of the fixing part 14 is provided with an external thread 141 so that the fixing member 1 can be installed in the desired position by means of the external thread 141.

[0038] In this embodiment, the inner ring 2 is preferably made of carbon steel and is fixed to the outer periphery of the fastener 1 by an interference fit. The outer wall of the inner ring 2 is fixed with a galvanized coating to achieve rust prevention and extend its service life after long-term contact with lubricating oil or grease. Depending on actual needs, the galvanized coating can also be a zinc-nickel coating, etc. In order to achieve an oil storage effect between the fastener 1 and the inner ring 2 radially, an oil storage groove 21 is provided recessed on the outer wall of the inner ring 2.

[0039] In this embodiment, the roller 3 is preferably made of plastic. The inner wheel 31 and the outer wheel 32 of the roller 3 are evenly and uniformly fixedly connected with a number of reinforcing ribs 33, which improve the connection strength between the inner wheel 31 and the outer wheel 32.

[0040] In the specific operation of this embodiment:

[0041] The fixing member 1 is installed in the desired position (e.g., inside a household appliance) via the bottom thread 141, and a push-pull drawer is supported on the top outer edge of the roller 3. When the drawer is pushed or pulled, the bottom of the drawer contacts the top outer edge of the roller 3, causing the roller 3 and the inner ring 2 to rotate relative to the fixing member 1. The rolling process reduces friction, thereby facilitating the pulling out and pushing back of the drawer.

[0042] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A roller structure, comprising a fixing member (1), characterized in that: The outer periphery of the fixing member (1) is fixed with an inner ring (2), and the roller (3) is rotatably sleeved on the outer periphery of the fixing member (1) and the inner ring (2). Lubricating oil or grease is filled between the outer wall of the inner ring (2) and the inner wall of the roller (3).

2. The roller structure according to claim 1, characterized in that: The fastener (1) includes a top cover (11), a limiting part (12), a fitting part (13), and a fixing part (14) that are fixedly connected from top to bottom. The outer diameter of the top cover (11) is larger than the outer diameter of the limiting part (12), the outer diameter of the limiting part (12) is larger than the outer diameter of the fitting part (13), and the outer diameter of the fitting part (13) is larger than the outer diameter of the fixing part (14).

3. The roller structure according to claim 2, characterized in that: The top cover (11) is located on top of the roller (3) and a cross groove (111) is provided on the top of the top cover (11).

4. The roller structure according to claim 2, characterized in that: The limiting part (12) is located inside the roller (3) and the limiting part (12) is located at the top of the inner ring (2).

5. A roller structure according to claim 2, characterized in that: The fitting part (13) is located inside the inner ring (2) and the bottom of the fitting part (13) is flush with the bottom of the inner ring (2).

6. A roller structure according to claim 2, characterized in that: The fixing part (14) extends from the bottom of the roller (3) and the outer side of the fixing part (14) is provided with external threads (141).

7. The roller structure according to claim 1, characterized in that: The inner ring (2) is fixed to the outer periphery of the fastener (1) by an interference fit.

8. A roller structure according to claim 1, characterized in that: The inner ring (2) has an oil storage groove (21) recessed in the outer wall.

9. A roller structure according to claim 1, characterized in that: The outer wall of the inner ring (2) is fixed with a galvanized coating.

10. A roller structure according to claim 1, characterized in that: The inner wheel (31) and outer wheel (32) of the roller (3) are uniformly and fixedly connected with several reinforcing ribs (33) at equal intervals.

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