Mechanical delay telescopic rod

Abstract

The utility model discloses a mechanical delay telescopic rod. A main body structure comprises a sleeve, a telescopic rod, damping grease, a sealing ring and other parts. In the initial state, the telescopic rod is pushed into a preset position in the sleeve through external force, after the external force is relieved, the telescopic rod slowly restores to the original position under the combined action of the spring and the damping grease, and the timing function is achieved. The utility model has the advantages of simple structure, small volume and low cost.

Description

Technical Field

[0001] This utility model relates to the field of mechanical equipment manufacturing, specifically, it is a mechanical time-delay telescopic rod. Background Technology

[0002] In industrial production, automation equipment, precision instruments and other fields, reciprocating motion mechanisms are a common mechanical structure and are widely used in various mechanical equipment.

[0003] Telescopic poles are widely used in fields such as automation control and mechanical equipment. Traditional telescopic poles typically achieve length changes through simple mechanical structures, but in practical applications, there are often specific requirements for controlling the speed of the extension and retraction process. For example, in the buffer support structures of medical equipment and precision instruments, rapid extension and retraction may cause impact, vibration, or instability, affecting the user experience and equipment lifespan. Therefore, developing a telescopic pole that can control the extension and retraction speed and implement a delay function is particularly important. Summary of the Invention

[0004] The purpose of this invention is to provide a mechanically delayed telescopic rod.

[0005] The technical solution to achieve the purpose of this utility model is as follows: a mechanical time-delay telescopic rod, including a sleeve, a telescopic rod, a time-delay damping spring and damping grease; a time-delay damping spring and damping grease are installed in the damping spring and damping grease mounting hole inside the sleeve, and the telescopic rod is installed into the damping spring and damping grease mounting hole and contacts the damping spring.

[0006] Furthermore, it also includes an O-ring, with an O-ring mounting groove at one end of the telescopic rod, into which the O-ring is inserted, and the end of the telescopic rod with the O-ring is inserted into the damping spring damping grease mounting hole.

[0007] Furthermore, it also includes a sealing ring and a gasket. The gasket, sealing ring 5, and gasket are sequentially inserted into the gasket sealing ring mounting hole of the sleeve and pressed against the end face of the gasket sealing ring mounting hole.

[0008] Furthermore, the sleeve is a rotating body, and the sleeve has blind holes for mounting damping spring damping grease and gasket sealing rings sequentially opened from one end face inward; the blind hole for mounting gasket sealing rings is close to the front end face of the sleeve and has a larger diameter than the blind hole for mounting damping spring damping grease.

[0009] Furthermore, the telescopic rod consists of two rotating bodies with different diameters. The end with the larger diameter fits into the sleeve, and an O-ring mounting groove is opened on the side of one end of the rotating body with the larger diameter.

[0010] Furthermore, the sleeve, telescopic rod, and time-delay damping spring are made of SUS316N (0Cr17Ni12Mo2N), AISI420F, 630 stainless steel (1.4542), C276, or high-strength aluminum alloy.

[0011] Compared with the prior art, the significant advantages of this utility model are as follows:

[0012] 1. Precise delay control

[0013] Through the interaction of a precisely designed spring and high-viscosity damping grease, a precise and controllable delayed extension function is achieved. This structure ensures that it operates according to preset time and force during landing and disengagement, effectively reducing impact.

[0014] 2. Strong stability, reliability, and environmental adaptability

[0015] The flow resistance of the damping grease provides stable speed control, preventing sudden acceleration or deceleration during extension and retraction, and ensuring the smoothness of the entire operation. Key components of the telescopic pole are manufactured using high-strength, corrosion-resistant materials, enabling long-term stable operation in harsh environments. Even under extreme conditions such as high temperature, low temperature, and strong winds, the performance of the damping grease remains stable. Simultaneously, surface treatment technology improves the wear resistance of the components, extending their service life.

[0016] 3. Compact structure and lightweight

[0017] The telescopic pole adopts an integrated structural design, which integrates the spring and damping system into a compact space, reducing not only the overall volume but also the weight, making it easy to install and transport, and is particularly suitable for lightweight requirements.

[0018] 4. Low energy consumption and high efficiency

[0019] The system mainly relies on the elastic potential energy of the spring and the flow resistance of the damping grease for energy conversion, without the need for external energy input, thus achieving a low-energy-consumption and high-efficiency working mode.

[0020] 5. Low cost

[0021] Compared to complex electronic or hydraulic systems, this telescopic pole uses a simple mechanical structure, reducing manufacturing and maintenance costs. Attached Figure Description

[0022] Figure 1 This is a general drawing of one embodiment of the mechanism assembly of this utility model.

[0023] Figure 2 This is a schematic diagram of the sleeve of this utility model.

[0024] Figure 3 This is a schematic diagram of the telescopic rod of this utility model.

[0025] Figure 4 This is a schematic diagram of the damping spring of this utility model.

[0026] Figure 5 This is a schematic diagram of the O-ring of this utility model.

[0027] Figure 6 This is a schematic diagram of the sealing ring of this utility model.

[0028] Figure 7 This is a schematic diagram of the gasket of this utility model. Detailed Implementation

[0029] This utility model provides a mechanical time-delay telescopic rod, the main structure of which consists of a sleeve 1, a telescopic rod 2, damping grease 7, a sealing ring 5, and other components. In the initial state, the telescopic rod 2 is pushed into a predetermined position inside the sleeve 1 by external force. After the external force is released, the telescopic rod 2 slowly returns to its original position under the combined action of the spring 3 and the damping grease 7, thus realizing the timing function.

[0030] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0031] Combination Figure 1 The labels in the attached diagram are as follows: 1. Sleeve; 101 Damping spring damping grease mounting hole; 102 Gasket sealing ring mounting hole; 2. Telescopic rod; 201 O-ring mounting groove; 3. Damping spring; 4. O-ring; 5. Sealing ring; 6. Gasket; 7. Damping grease.

[0032] Combination Figure 1 The mechanical time-delay telescopic rod of this utility model includes a sleeve 1, a telescopic rod 2, a damping spring 3, an O-ring 4, a sealing ring 5, a gasket 6, and damping grease 7. Combined with... Figure 1 , 2 3. O-ring 4 is inserted into the O-ring mounting groove 201 of the telescopic rod 2; the time-delay damping spring 3, damping grease 7, and telescopic rod 2 with O-ring 4 installed are sequentially inserted into the damping spring and damping grease mounting hole 101 of the sleeve 1; the gasket 6, sealing ring 5, and gasket 6 are sequentially inserted into the gasket and sealing ring mounting hole 102 of the sleeve 1; finally, the end face of the gasket and sealing ring mounting hole 102 of the sleeve 1 is pressed tightly. The structure of the time-delay damping spring 3, O-ring 4, sealing ring 5, and gasket 6 is as follows. Figures 4-7 As shown.

[0033] Both the sleeve 1 and the telescopic rod 2 are rotating bodies. The sleeve 1 has a blind hole 101 for mounting the damping spring damping grease and a blind hole 102 for mounting the gasket sealing ring, with the diameter of the blind hole 102 being larger than that of the blind hole 101. The telescopic rod 2 consists of two cylinders with different diameters. The end with the larger diameter mates with the sleeve 1, and the side of the cylinder with the larger diameter has an O-ring mounting groove 201. The sleeve 1, the telescopic rod 2, and the time-delay damping spring 3 are made of SUS316N (0Cr17Ni12Mo2N), AISI 420F, 630 stainless steel (1.4542), C276, or high-strength aluminum alloy.

[0034] When the telescopic rod 2 moves towards the sleeve 1, the compressed damping grease 7 passes through the O-ring 4. After the telescopic rod 2 is compressed into place and the external force is removed, the telescopic rod 2 slowly returns to its original shape under the combined action of the time-delay damping spring 3 and the damping grease 7, thus achieving the time-delay function. During this process, the gasket 6 and the sealing ring 5 seal the damping grease 7. The damping grease 7 can pass through the outside of the O-ring, and it moves back and forth between the damping spring damping grease mounting blind hole 101 and the cavity between the telescopic rod 2 and the gasket 6.

[0035] The telescopic rod 2 and the sleeve 1 are fitted with a clearance. The O-ring 4 has a certain elasticity and does not provide a complete seal. When the telescopic rod 2 is compressed inward, the damping grease 7 reaches the end of the telescopic rod 2 that is fitted with the gasket 6 through the clearance between the telescopic rod 2 and the sleeve 1 and the deformed O-ring. When the telescopic rod 2 is stretched outward, the damping grease 7 reaches the end of the telescopic rod 2 that is fitted with the damping spring 3 through the deformed O-ring and the clearance between the telescopic rod 2 and the sleeve 1. The resistance provided by the damping grease 7 and the elasticity of the damping spring 3 work together to provide power for the time delay function of the telescopic rod.

[0036] Assuming the time-delayed damping spring 3 has a complete oscillation period T, the ideal spring oscillator has the following period:

[0037]

[0038] In the formula, m: mass of the actuating sleeve;

[0039] T: Timing time.

[0040] The spring stiffness K can be obtained from equation (1). The spring can be selected by referring to the mechanical handbook based on the spring stiffness.

Claims

1. A mechanically delayed telescopic rod, characterized in that: It includes a sleeve (1), a telescopic rod (2), a time-delay damping spring (3) and a damping grease (7); the time-delay damping spring (3) and the damping grease (7) are installed in the damping spring damping grease mounting hole (101) inside the sleeve (1), and the telescopic rod (2) is installed into the damping spring damping grease mounting hole (101) and is in contact with the damping spring (3).

2. The mechanical delay telescopic rod according to claim 1, characterized in that: It also includes an O-ring (4), one end of the telescopic rod (2) is provided with an O-ring mounting groove (201), the O-ring (4) is installed in the O-ring mounting groove (201), and the end of the telescopic rod (2) with the O-ring (4) is installed in the damping spring damping grease mounting hole (101).

3. The mechanical delay telescopic rod according to claim 1, characterized in that: It also includes a sealing ring (5) and a gasket (6). The gasket (6), sealing ring (5), and gasket (6) are sequentially inserted into the gasket sealing ring mounting hole (102) of the sleeve (1) and pressed against the end face of the gasket sealing ring mounting hole (102).

4. The mechanical delay telescopic rod according to claim 1 or 3, characterized in that: The sleeve (1) is a rotating body. The sleeve (1) has a damping spring damping grease mounting hole (101) and a gasket sealing ring mounting hole (102) sequentially opened from one end face inward. The gasket sealing ring mounting hole (102) is close to the front end face of the sleeve (1) and its diameter is larger than that of the damping spring damping grease mounting hole (101).

5. The mechanical delay telescopic rod according to claim 1 or 2, characterized in that: The telescopic rod (2) consists of two rotating bodies with different diameters. The larger diameter end is fitted with the sleeve (1). The side of the larger diameter rotating body has an O-ring mounting groove (201).

6. The mechanical delay telescopic rod according to claim 1, characterized in that: The sleeve (1), telescopic rod (2), and time-delay damping spring (3) are made of SUS316N stainless steel 0Cr17Ni12Mo2N, AISI 420F, 630 stainless steel 1.4542, C276 or high-strength aluminum alloy.

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