Damping structure of long-handle electric grinder output shaft shock absorber

Abstract

The utility model relates to the field of electric grinder devices, in particular to a shock absorption structure of a shock absorber of an output shaft of a long-handle electric grinder, which comprises the output shaft and a shock absorber shock absorption component, the shock absorber shock absorption component is arranged inside or outside the output shaft, and the shock absorber shock absorption component comprises a rubber elastic body and a metal sleeve rod, vibration of the output shaft is transmitted to the rubber elastic body and the metal sleeve rod in sequence, an external or internal vibration absorber damping assembly is additionally arranged on the output shaft of the long-handle electric grinder, vibration of the output shaft is transmitted to the metal sleeve rod through the rubber elastic body, and under vibration excitation of the output shaft, the metal sleeve rod vibrates in the same frequency and opposite directions as the output shaft. Therefore, the purpose of shock absorption is achieved, the length of the output shaft can be further increased, it is guaranteed that the shock of the output shaft is within an acceptable range in the working process, and a shock solution is provided for products of electric grinders with lengthened handle output shafts.

Description

Technical Field

[0001] The utility model relates to the field of electric grinding devices, in particular to a shock absorbing structure of a shock absorber of a long-handled electric grinding output shaft. Background Art

[0002] An electric grinder is a hardware tool used to drive the grinding head to rotate so that the grinding head can grind the workpiece or product. Existing long-handled electric grinders do not have an output shaft shock-absorbing structure. The vibration control of existing electric grinders is mainly concentrated on the main machine side and the output shaft vibration control. The current main machine side shock-absorbing solution has limited shock-absorbing range for the long output shaft, and the output shaft vibration control cost is relatively high.

[0003] These two solutions cannot well control the vibration of a longer output shaft. Therefore, in order to solve the deficiencies in the prior art, a simple-structured long-handled electric grinder output shaft shock absorber structure is required. Utility Model Content

[0004] The utility model provides a shock absorbing structure of a shock absorber of a long-handled electric grinder output shaft in order to solve the problems of the prior art.

[0005] The purpose of the utility model can be achieved through the following technical scheme: a long-handled electric grinder output shaft shock absorber damping structure comprises: an output shaft and a shock absorber damping assembly, the shock absorber damping assembly is arranged inside the output shaft or outside the output shaft, the shock absorber damping assembly comprises a rubber elastic body and a metal sleeve rod, and the vibration of the output shaft is transmitted to the rubber elastic body and the metal sleeve rod in turn.

[0006] As a further improvement, the rubber elastic body is sleeved on the outside of the output shaft, and the metal sleeve rod is sleeved on the outside of the rubber elastic body.

[0007] As a further improvement, a guide hole is provided inside the output shaft, the rubber elastic body is arranged inside the output shaft and a channel is provided inside the rubber elastic body, and the metal sleeve rod is arranged in the channel.

[0008] Compared with the prior art, the utility model has the following beneficial effects on the shock-absorbing structure of the long-handled electric grinder output shaft shock absorber:

[0009] According to actual needs, an external or internal shock absorber is added to the output shaft of the long-handled electric grinder. The vibration of the output shaft is transmitted to the metal sleeve rod by the rubber elastomer. Under the vibration excitation of the output shaft, the metal sleeve rod vibrates in the same frequency and opposite direction as the output shaft, thereby achieving the purpose of shock absorption, so that the length of the output shaft can be further increased, while ensuring that the vibration of the output shaft is within an acceptable range during operation, providing a vibration solution for electric grinders with extended handle output shafts. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic diagram of the structure of the utility model

[0011] Figure 2 for Figure 1 Schematic diagram of the structure of the shock absorber shock absorption component

[0012] Figure 3 A structural diagram of another embodiment of the utility model

[0013] Figure 4 for Figure 3 Schematic diagram of the structure of the shock absorber shock absorption component

[0014] In the figure, 1-output shaft, 11-guide hole, 2-shock absorber damping assembly, 21-rubber elastic body, 22-metal sleeve rod, 23-channel. DETAILED DESCRIPTION

[0015] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0016] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0017] Below is a combination of the embodiments and the attached Figures 1 to 4 , the technical solution of the utility model is further elaborated.

[0018] Example 1

[0019] A long-handled electric grinder output shaft shock absorber damping structure comprises: an output shaft 1 and a shock absorber damping assembly 2, wherein the shock absorber damping assembly 2 is arranged inside the output shaft 1 or outside the output shaft 1, and the shock absorber damping assembly 2 comprises a rubber elastic body 21 and a metal sleeve rod 22, and the vibration of the output shaft 1 is transmitted to the rubber elastic body 21 and the metal sleeve rod 22 in sequence.

[0020] like Figure 1 to Figure 4As described above, the use principle of the utility model is as follows: the structure of a dynamic shock absorber is added to the output shaft 1 of the long-handled electric grinder, so that the vibration of the output shaft 1 caused by processing errors, uneven mass distribution, etc. is reduced by the shock absorber damping assembly 2 on the output shaft 1, so that the user feels comfortable; the size, material and physical properties of the specific structure of the shock absorber damping assembly 2 need to consider parameters such as mass, stiffness, and damping coefficient according to actual conditions to ensure that the best vibration absorption effect is achieved at a specific excitation frequency, and the device uses a resonance system to absorb the vibration energy of an object to reduce the vibration of the object; its principle is to attach a mass elastic resonance system to the vibrating object, and the reaction force generated by this additional system during resonance can reduce the vibration of the vibrating object. Generally, this structure is used for tools with non-adjustable speed. So that the length of the output shaft can be further increased, and the vibration of the output shaft during the working process is guaranteed to be within an acceptable range.

[0021] Example 2

[0022] A long-handled electric grinder output shaft shock absorber damping structure comprises: an output shaft 1 and a shock absorber damping assembly 2, wherein the shock absorber damping assembly 2 is arranged inside the output shaft 1 or outside the output shaft 1, and the shock absorber damping assembly 2 comprises a rubber elastic body 21 and a metal sleeve rod 22, and the vibration of the output shaft 1 is transmitted to the rubber elastic body 21 and the metal sleeve rod 22 in sequence, the rubber elastic body 21 is sleeved on the outside of the output shaft 1, and the metal sleeve rod 22 is sleeved on the outside of the rubber elastic body 21.

[0023] When the outer surface of the output shaft 1 is larger, a larger shock absorber can be designed to absorb and improve larger vibrations; the processing of the output shaft can reduce the requirements for runout and reduce costs; however, since the outer surface may contact the workpiece, it is easy to cause wear and other problems, and may need to be replaced as a wearing part. Figure 1 The external shock absorber damping assembly 2 is composed of a rubber elastic body 21 and a metal sleeve rod 22. The metal sleeve rod 22 is similar to the steel sleeve structure. The vibration of the output shaft is transmitted to the steel sleeve by the rubber elastic body 21. Since the natural frequency of the shock absorber damping assembly is consistent with that of the output shaft, under the vibration excitation of the output shaft, the metal sleeve rod 22 vibrates in the same frequency and opposite direction as the output shaft, thereby achieving the purpose of shock absorption.

[0024] Example 3

[0025] A long-handled electric grinder output shaft shock absorber damping structure includes: an output shaft 1 and a shock absorber damping assembly 2, wherein the shock absorber damping assembly 2 is arranged inside or outside the output shaft 1, and the shock absorber damping assembly 2 includes a rubber elastic body 21 and a metal sleeve rod 22, and the vibration of the output shaft 1 is sequentially transmitted to the rubber elastic body 21 and the metal sleeve rod 22. A guide hole 11 is arranged inside the output shaft 1, the rubber elastic body 21 is arranged inside the output shaft 1, and a channel 23 is arranged inside the rubber elastic body 21, and the metal sleeve rod 22 is arranged in the channel 23.

[0026] Since the outer surface of the output shaft is at risk of wear, a shock absorber damping assembly 2 may also be provided inside the output shaft. However, due to the limited internal space and the small mass of the shock absorber, the vibration of the output shaft can only be slightly improved. Therefore, the processing runout of the output shaft is required to be higher than that of an external one. Figure 3 The built-in shock absorber damping assembly 2 is composed of a rubber elastic body 21 and a metal sleeve rod 22. The metal sleeve rod 22 is a high-density metal core rod. The vibration of the output shaft is transmitted to the high-density metal core rod by the rubber elastic body 21. Since the natural frequency of the shock absorber is consistent with that of the output shaft, under the vibration excitation of the output shaft, the metal sleeve rod 22 vibrates in the same frequency and opposite direction as the output shaft, thereby achieving the purpose of shock absorption.

[0027] The preferred specific embodiments of the utility model are described in detail above. It should be understood that ordinary technicians in this field can make many modifications and changes based on the concept of the utility model without creative work. Therefore, all technical solutions that can be obtained by technicians in this technical field based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the existing technology should be within the scope of protection determined by the claims.

Claims

1. A long-handled electric grinder output shaft shock absorber shock absorbing structure, characterized in that: include: An output shaft and a shock absorber damping assembly, wherein the shock absorber damping assembly is arranged inside or outside the output shaft, and the shock absorber damping assembly comprises a rubber elastic body and a metal sleeve rod, and the vibration of the output shaft is transmitted to the rubber elastic body and the metal sleeve rod in turn.

2. The long-handled electric grinder output shaft shock absorber shock absorbing structure according to claim 1, characterized in that: The rubber elastic body is sleeved on the outer side of the output shaft, and the metal sleeve rod is sleeved on the outside of the rubber elastic body.

3. The long-handled electric grinder output shaft shock absorber shock-absorbing structure according to claim 1, characterized in that: A guide hole is arranged inside the output shaft, the rubber elastic body is arranged inside the output shaft and a channel is arranged inside the rubber elastic body, and the metal sleeve rod is arranged in the channel.

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