A self-locking spring hanger assembly

Abstract

This utility model relates to the technical field of washing machine parts, specifically disclosing a self-locking spring hanger assembly, including a metal rod; an upper hanger, a lower hanger, a sealing cover, an elastic element, a limiting cover, and a friction ring are slidably sleeved on the metal rod; the lower end of the lower hanger has an inclined groove; the upper end of the sealing cover has a limiting protrusion corresponding to the inclined groove; through the elastic deformation cooperation of the inclined groove and the limiting protrusion made of plastic, the limiting protrusion locks when it enters the inclined groove, making the lower hanger and the sealing cover a whole, sealing and protecting the internal friction ring and lubricant, resulting in greater friction force and better sealing compared to a straight-inserted cylindrical contact surface, and extending the service life of the friction ring and lubricant.

Description

Technical Field

[0001] This utility model relates to the technical field of washing machine parts, specifically a self-locking spring rod assembly. Background Technology

[0002] The washing machine suspension rod assembly is the core component of the washing machine's suspension system and plays a crucial role in the stable operation of the washing machine. The suspension rod assembly is usually installed on the four corners of the upper part of the washing machine's outer casing, suspending the main parts of the washing machine. Once the suspension rod is damaged, the balance of the washing machine will be disrupted, which may lead to problems such as noise, displacement, and water leakage.

[0003] Chinese invention patent CN113638194A, published on November 12, 2021, discloses a hanging rod assembly and a washing machine. The hanging rod assembly includes a hanging rod and a shock-absorbing device disposed on the hanging rod. The shock-absorbing device includes a damping strip and a fixing seat. The fixing seat includes a base and a sleeve. The sleeve is sleeved on the hanging rod, and the sleeve and the base are fixedly disposed relative to each other in the axial direction of the hanging rod. The base is connected to the bottom end of the hanging rod. The damping strip is sleeved on the sleeve and moves relative to the sleeve in the axial direction of the hanging rod. This invention uses a sleeve on the outside of the hanging rod, and the sleeve is fixedly connected to the base to form a fixing seat for fixing the spring. The damping strip is sleeved on the sleeve instead of directly on the hanging rod, which greatly increases the friction area when the damping strip slides relative to the sleeve in the axial direction compared to when the damping strip slides directly on the hanging rod, making the sliding damping force generated by the hanging rod assembly more stable.

[0004] However, the above-mentioned disclosed solutions have the following shortcomings: the friction block on the existing hanger is connected to two interlocking structures. The contact surface of the two structures is cylindrical, which means that the connection between them relies entirely on friction and cannot achieve a stable connection. After being installed in the vibration environment of a washing machine, it is easy to loosen due to friction. Loosening during vibration will generate noise from relative displacement. Utility Model Content

[0005] The purpose of this invention is to solve the technical problem that in the prior art, the friction block on the hanger rod is connected to two interlocking structures, and the contact surface of the two structures is cylindrical, which causes the connection between the two to rely entirely on friction, making it impossible to achieve a stable connection. After being installed in the vibration environment of a washing machine, it is easy to loosen due to friction, and the loosening during vibration will produce noise due to relative displacement. The invention provides a self-locking spring hanger rod assembly.

[0006] To achieve the above objectives, the present invention adopts the following technical solution;

[0007] The present invention relates to a self-locking spring rod assembly, comprising a metal rod; an upper hanging head, a lower hanging head, a sealing cover, an elastic element, a limiting cover, and a friction ring are slidably sleeved on the metal rod; an inclined groove is provided at the lower end of the lower hanging head; and a limiting protrusion is provided at the upper end of the sealing cover corresponding to the inclined groove.

[0008] Furthermore, the inclined slot is provided with a rounded corner for avoidance.

[0009] Furthermore, the limiting protrusion has a chamfer corresponding to the avoidance rounded corner.

[0010] The self-locking spring rod assembly provided by this utility model has the following beneficial effects:

[0011] 1. This utility model utilizes the elastic deformation of a plastic inclined slot and a limiting protrusion to lock the lower head and the enclosure into a single unit when the limiting protrusion enters the inclined slot. This unit protects the internal friction ring and lubricant, resulting in greater friction and better sealing compared to a straight-insertion cylindrical contact surface. This extends the service life of the friction ring and lubricant.

[0012] 2. This utility model uses a plastic hanging head and a closed cover, which are tough and can deform. This deformation allows the hanging head and the closed cover to be assembled and fixed, and will not easily separate. The friction ring is confined inside the hanging head and the closed cover, thereby protecting the internal friction ring and lubricant from moisture and maintaining friction for a long time. Attached Figure Description

[0013] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings;

[0014] Figure 1 This is a schematic diagram of the isometric structure of this utility model;

[0015] Figure 2 This is a front view structural diagram of the present invention;

[0016] Figure 3 This is a front cross-sectional view of the present invention.

[0017] Figure 4 This is a partially enlarged structural schematic diagram of the present invention.

[0018] The following are the labels in the diagram: 1. Metal rod; 2. Upper hanging head; 3. Lower hanging head; 4. Enclosed cover; 5. Elastic element; 6. Limiting cover; 7. Friction ring; 8. Rounded corner for clearance; 9. Inclined slot; 10. Chamfer for clearance; 11. Limiting protrusion. Detailed Implementation

[0019] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0020] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0021] It should be noted that all directional indications (such as up-down-left-right-forward-backward...) in the embodiments of this utility model are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly. The connection can be a direct connection or an indirect connection.

[0022] Please see Figure 1-4 As shown, a self-locking spring rod assembly includes a metal rod 1; an upper hanging head 2, a lower hanging head 3, a sealing cover 4, an elastic element 5, a limiting cover 6, and a friction ring 7 are slidably sleeved on the metal rod 1; an inclined groove 9 is provided at the lower end of the lower hanging head 3; a limiting protrusion 11 is provided at the upper end of the sealing cover 4 corresponding to the inclined groove 9. Through the elastic deformation cooperation of the inclined groove 9 and the limiting protrusion 11 made of plastic, the limiting protrusion 11 is locked when it enters the inclined groove 9, making the lower hanging head 3 and the sealing cover 4 a whole, sealing and protecting the internal friction ring 7 and lubricant. This results in greater friction force and better sealing compared to a straight-inserted cylindrical contact surface, and extends the service life of the friction ring 7 and lubricant.

[0023] The inclined slot 9 has a relief rounded corner 8, which makes it easy to align the limiting protrusion 11 with the axis, and then the alignment and insertion are completed to fix it.

[0024] The limiting protrusion 11 has a chamfer 10 corresponding to the avoidance fillet 8. The chamfer 10 and the avoidance fillet 8 make it easier to align the axis during assembly, and then align and insert to complete the fixation.

[0025] The lower hanging head 3 and the closed cover 4 are made of plastic. The plastic material makes the lower hanging head 3 and the closed cover 4 flexible and deformable. This deformation allows the lower hanging head 3 and the closed cover 4 to be assembled and fixed, and they will not easily separate.

[0026] The friction ring 7 is located inside the lower mounting head 3, which confines the friction ring 7 within the lower mounting head 3 and the enclosure 4, thereby protecting the internal friction ring 7 and lubricant from moisture and maintaining friction for a long time.

[0027] The metal rod 1 consists of, from top to bottom, an upper hanging head 2, a lower hanging head 3, a friction ring 7, a sealing cover 4, an elastic element 5, and a limiting cover 6. This is an existing design and can be connected inside the washing machine.

[0028] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A self-locking spring hanger assembly, characterized by; It includes a metal rod (1); the metal rod (1) is slidably sleeved with an upper hanging head (2), a lower hanging head (3), a closed cover (4), an elastic element (5), a limiting cover (6) and a friction ring (7); the lower end of the lower hanging head (3) is provided with an inclined slot (9); the upper end of the closed cover (4) is provided with a limiting protrusion (11) corresponding to the inclined slot (9).

2. The self-locking spring hanger assembly of claim 1, wherein: The inclined slot (9) is provided with a rounded corner (8) for avoidance.

3. The self-locking spring hanger assembly of claim 1, wherein: The limiting protrusion (11) has a chamfer (10) corresponding to the avoidance fillet (8).

4. The self-locking spring hanger assembly of claim 1, wherein: The lower hanging head (3) and the enclosure (4) are made of plastic.

5. The self-locking spring hanger assembly of claim 1, wherein: The friction ring (7) is located inside the lower hanging head (3).

6. The self-locking spring hanger assembly of claim 1, wherein: The metal rod (1) consists of, from top to bottom, an upper hanging head (2), a lower hanging head (3), a friction ring (7), a sealing cover (4), an elastic element (5), and a limiting cover (6).

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