Hanging glass car air freshener with damping pad

Description

[0001] FIELD OF TECHNOLOGY

[0002] The utility model relates to the field of automobile accessories, namely to hanging air fresheners containing a glass bottle with aromatic liquid, intended for placement in the interior of a car.

[0003] STATE OF THE ART

[0004] Hanging car air fresheners are known, containing a glass bottle with aromatic liquid and a hanging element, for example, in the form of a cord.

[0005] A drawback of known devices is the possibility of direct contact between the glass bottle and the car's windshield under dynamic loads (vibrations, sudden braking, swaying), which can damage the glass bottle and / or windshield. The design of known air fresheners does not include elements to cushion the impact of contact with the windshield, which is especially important when hanging the bottle on the rearview mirror in close proximity to the glass.

[0006] The closest analog to the claimed utility model is the utility model under patent RU 237866 U1 (published October 9, 2025), also owned by the applicant. This patent describes a hanging car air freshener comprising a glass bottle containing an aromatic liquid, a suspension element, and a cover made of a hard material (plastic, plywood) attached to the outer surface of the bottle on the side facing the windshield. The main purpose of this cover is to protect the aromatic liquid from exposure to sunlight.

[0007] The disadvantage of the closest analogue is that the pad, made of a hard material (plastic, plywood), does not provide damping (softening) of impact loads upon contact with the windshield. Under dynamic loads, such a rigid pad does not prevent, but can cause damage to both the glass bottle and the windshield. Furthermore, it does not disclose:

[0008] specific mechanical characteristics of the lining material (hardness, elastic modulus, mechanical loss coefficient), ensuring a reduction in peak loads;

[0009] Minimum values ​​of pad thickness and area required for effective damping.

[0010] Thus, known solutions, including the closest analogue, do not allow achieving the technical result declared in this utility model.

[0011] PROBLEM OF UTILITY MODEL

[0012] Creation of a hanging glass car air freshener that prevents direct contact between the glass bottle and the car windshield under dynamic loads by actively damping impact loads.

[0013] TECHNICAL RESULT

[0014] Reducing peak impact loads transmitted from a glass bottle to a car windshield and preventing their direct contact by ensuring a given effective rigidity of the contact system, determined by the elastic modulus of the polymer material of 2-100 MPa, its thickness of 1.0-5.0 mm and a contact area of ​​at least 40% of the side of the bottle.

[0015] ESSENCE OF THE UTILITY MODEL

[0016] The specified technical result is achieved by the fact that in a hanging car air freshener, containing a glass bottle with aromatic liquid and a suspension element, a damping pad is provided, fixed on the outer surface of the bottle.

[0017] Overlay:

[0018] made of polymer material;

[0019] is located on the side of the bottle that faces the windshield during use;

[0020] has an area of ​​not less than 40% of the area of ​​the specified side of the bottle;

[0021] has a thickness of at least 1.0mm.

[0022] The polymer material of the overlay has mechanical properties (hardness, elastic modulus, and loss coefficient) that reduce peak impact loads and prevent direct contact between glass surfaces when the bottle deflects under dynamic loads. Specifically, the preferred ranges are: hardness 45-95 Shore A, elastic modulus 2-100 MPa, and loss coefficient tan δ≥0.05 in the frequency range of 10-200 Hz.

[0023] Difference from the prototype (patent RU 237866 U1)

[0024] Unlike the prototype, where the pad is made of hard materials (plastic, plywood) and designed to protect from sunlight, the claimed utility model solves a fundamentally different problem: active shock damping. This is achieved through the use of an elastomeric material (plasticized PVC) with a low modulus of elasticity of 2-100 MPa and a high mechanical loss coefficient of tan δ≥0.05. This pad not only sits between the bottle and the glass, but also deforms upon impact, absorbing and dissipating its energy, something impossible for the rigid prototype pad.

[0025] Justification of the materiality of the features:

[0026] The rigidity of the contact system (K) is determined by the formula K ∝ (E⋅S) / h, where E is the modulus of elasticity, S is the contact area, h is the thickness of the lining.

[0027] The thickness of the pad (1.0-5.0 mm) was chosen experimentally: with a thickness of less than 1.0 mm, the effective rigidity of the system becomes too high, which does not allow reducing peak impact loads to a safe level; with a thickness of more than 5.0 mm, the overall dimensions and weight increase, which is impractical.

[0028] A contact area of ​​at least 40% ensures uniform load distribution across the bottle surface and prevents stress concentration in the glass. If the contact area is less than 40%, point contact can cause localized overloads and damage to the bottle or windshield.

[0029] The modulus of elasticity (2-100 MPa) determines the ability of a material to deform under load. Above 100 MPa, the material becomes too rigid (as in the prototype—plastic, plywood) and provides no damping; below 2 MPa, it becomes excessively soft, leading to shape loss, mounting instability, and insufficient compressive strength.

[0030] The hardness of 45-95 Shore A correlates with the modulus of elasticity and provides an optimal balance between elasticity and energy dissipation ability.

[0031] The mechanical loss coefficient tan δ≥0.05 characterizes the material's ability to convert mechanical impact energy into thermal energy. A value of ≥0.05 in the frequency range of 10-200 Hz corresponds to typical vibration and impact frequencies occurring in a vehicle's interior.

[0032] Thus, the combination of these features reduces peak impact loads and prevents direct contact between glass surfaces. Unlike the prototype, where the hard pad is not designed for damping, the claimed utility model actively absorbs the kinetic energy of an impact, converting it into heat through internal friction in the material (tan δ).

[0033] DESCRIPTION OF DRAWINGS

[0034] Fig. 1 shows a general view of a hanging car air freshener. The device comprises a glass bottle of car air freshener (1), a damping pad (2) attached to the outer surface of the glass bottle, and a car windshield (3), shown schematically behind the rearview mirror.

[0035] The damping pad (2) is located on the side of the bottle (1) that faces the windshield (3) during operation. The arrow indicates the direction toward the windshield.

[0036] Fig. 1 shows the position of the device when the bottle (1) is deflected towards the windshield (3) under the action of a dynamic load indicated by arrow F.

[0037] At the specified deviation, the primary contact with the windshield (3) is carried out through the damping pad (2), which prevents direct contact of the glass surface of the bottle (1) with the windshield (3).

[0038] IMPLEMENTATION OF A UTILITY MODEL

[0039] The glass bottle may have a flat and / or curved outer surface.

[0040] The damping pad is flat on one side to ensure contact with the bottle surface. The outer surface of the pad can be embossed.

[0041] The pad is attached to the bottle using any permanent method, including, but not limited to, adhesive, thermal bonding, or through intermediate plastic elements. In some cases, the pad may be attached with a gap of 0.5-2.0 mm between the pad and the bottle, which further reduces the effective rigidity of the system. However, the technical result is still achieved with direct contact due to the damping properties of the material.

[0042] The polymer material is preferably plasticized polyvinyl chloride (PVC) with the specified mechanical properties. Specific example: a 2.0 mm thick PVC overlay covering 50% of the bottle side, directly secured with an adhesive layer.

[0043] When the bottle is deflected under dynamic loads, the primary contact with the windshield is made by the pad, preventing direct contact between the glass surfaces. Due to the low modulus of elasticity and high coefficient of mechanical loss of the material, the pad deforms, absorbing the impact energy, and returns to its original shape after the load is removed.

Claims

1. A hanging car fragrance, comprising a glass bottle with aromatic liquid and a suspension element, characterized in that it contains a damping pad fixed to the outer surface of the bottle, wherein the pad is made of a polymer material with a hardness of 45-95 Shore A, an elastic modulus of 2-100 MPa, a mechanical loss coefficient tan δ≥0.05 in the frequency range of 10-200 Hz, and is located on the side of the bottle, which during operation faces the windshield, and also has an area of ​​at least 40% of the area of ​​the said side of the bottle and a thickness of at least 1.0 mm.

2. The air freshener according to paragraph 1, characterized in that the pad is made of plasticized polyvinyl chloride.

3. The air freshener according to item 1, characterized in that the thickness of the pad is 1.0-5.0 mm.

4. The air freshener according to item 1, characterized in that the area of ​​the pad is 40-100% of the area of ​​the specified side of the bottle.

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