Impact-resistant high-airtightness servo motor shaft

Abstract

The utility model provides an impact-resistant high-air-tightness servo motor shaft, and relates to the technical field of motor rotating shafts, the impact-resistant high-air-tightness servo motor shaft comprises a servo motor body, the servo motor body comprises a servo motor body and a rotating shaft assembly, the rotating shaft assembly is inserted in the output end of the servo motor body, and one end of the rotating shaft assembly far away from the servo motor body is sleeved with a sealing assembly. According to the utility model, under the action of the sealing assembly, the mounting seat and the mounting point are wrapped and protected, the sealing sleeve is made of stainless steel, so that the joint of the rotating shaft assembly and the mounting point can be effectively prevented from being collided and damaged, and further, the limiting sleeve can move towards the sealing rubber sleeve by rotating the limiting sleeve; and after the extrusion sleeve is in contact with the sealing rubber sleeve, the limiting sleeve continues to be rotated until the sealing rubber sleeve is extruded to be in an outward turning state, and at the moment, under the action of the rubber material of the sealing rubber sleeve, the air tightness between the rotating shaft assembly and the mounting point is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of motor shafts, in particular to an impact-resistant and high-air-tightness servo motor shaft. Background Art

[0002] An electric motor (commonly known as a "motor") is an electromagnetic device that converts or transmits electrical energy based on the law of electromagnetic induction. The motor shaft is one of its important components, and its performance directly affects the performance of the entire motor. It is the main driving component in modern industrial systems.

[0003] In the prior art, most motor shafts have no sealing components at their mounting ends to protect the shafts, so the motor shafts are easily damaged during use. The sealing effects of the sealing components of a small number of motor shafts that have sealing effects are poor, so they are not very practical. Utility Model Content

[0004] The utility model mainly provides an impact-resistant and high-air-tightness servo motor shaft with good sealing effect.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an impact-resistant and high-air-tightness servo motor shaft, comprising a servo motor body, the servo motor body comprising a servo motor body and a rotating shaft assembly, the rotating shaft assembly is inserted at the output end of the servo motor body, and a sealing assembly is sleeved at one end of the rotating shaft assembly away from the servo motor body;

[0006] The sealing assembly comprises a sealing sleeve, one end of the sealing sleeve away from the servo motor body is provided with a sealing rubber sleeve, a fault-tolerant groove is provided on the sealing rubber sleeve, and one end of the sealing assembly close to the sealing rubber sleeve is provided with an expansion joint groove.

[0007] Preferably, the fault-tolerant grooves are distributed in a ring shape, and the angles between two adjacent fault-tolerant grooves are equal.

[0008] The beneficial effect of adopting the above further scheme is: when the sealing rubber sleeve is squeezed under the action of the fault-tolerant groove, the sealing rubber sleeve expands outward at equal intervals, so that the sealing rubber sleeve and the installation point fit better, and when the sealing rubber sleeve is expanded and squeezed outward, the sealing diameter can be increased, thereby improving the sealing effect of the component.

[0009] Preferably, the rotating shaft assembly comprises a shaft rod, both ends of the shaft rod are provided with mounting seats, one end of the shaft rod away from the servo motor body is provided with a thread groove, and a limiting sleeve is threadedly connected to the thread groove.

[0010] The beneficial effect of adopting the above further scheme is: the shaft rod is fixedly connected to the output end of the servo motor body through one of the mounting seats, the rotating shaft assembly is fixedly connected to the mounting point through another mounting seat, and further through the design of the thread groove, the limit sleeve is threadedly displaced on the shaft rod.

[0011] Preferably, the limiting sleeve is provided with positioning grooves, the positioning grooves are distributed in a ring shape, and the angles between two adjacent positioning grooves are equal. The limiting sleeve is provided with an extrusion sleeve on one side close to the sealing assembly.

[0012] The beneficial effect of adopting the above further scheme is: through the design of the positioning groove, when the limiting sleeve is rotated, the rotation can be assisted by a tool, and the anti-slip teeth of the rotating tool and the positioning groove are engaged with each other before rotating the limiting sleeve, making the limiting sleeve more labor-saving when rotating and extruding.

[0013] Preferably, the sealing sleeve is sleeved on one end of the rotating shaft assembly away from the servo motor body, and one end of the sealing sleeve close to the limiting sleeve is an arc surface structure, and the arc surface angle of the sealing sleeve increases from left to right.

[0014] The beneficial effect of adopting the above further scheme is: through the design of the arc surface structure of the limiting sleeve, when the limiting sleeve is displaced, it can first be mounted on the sealing component through the side with a lower arc surface angle, thereby avoiding the sealing component having a large diameter, which causes the limiting sleeve to be unable to be mounted on the sealing component.

[0015] Preferably, reinforcing ribs are embedded and installed on the shaft rod, the reinforcing ribs are distributed in a ring shape, and the angles between two adjacent reinforcing ribs are equal.

[0016] The beneficial effect of adopting the above further solution is that the strength of the shaft rod is auxiliary strengthened by the reinforcing ribs, and under the action of the reinforcing ribs, the shaft rod is prevented from twisting off during rotation.

[0017] Compared with the prior art, the advantages and positive effects of the utility model are:

[0018] 1. In the utility model, under the action of the sealing component, the mounting seat and the mounting point are wrapped and protected. Since the sealing sleeve is made of stainless steel, it can effectively prevent the connection between the shaft assembly and the mounting point from being damaged by collision. Furthermore, the limiting sleeve can be rotated to move in the direction of the sealing rubber sleeve. When the extrusion sleeve contacts the sealing rubber sleeve, the limiting sleeve is continuously rotated until the sealing rubber sleeve is squeezed to an everted state. At this time, under the action of the rubber material of the sealing rubber sleeve, the airtightness between the shaft assembly and the mounting point is further improved;

[0019] 2. In the utility model, through the design of the expansion joint groove, when the servo motor body is rotating, its surface temperature rises. At this time, when the expansion joint groove is subjected to the change of internal and external pressure, it plays a role in relieving stress and achieving impact resistance. Its main principle is to use the elastic deformation of the expansion joint to absorb the deformation of the servo motor body caused by thermal expansion and contraction or pressure change, thereby reducing the stress of the servo motor body itself and the connecting parts, and ensuring the safe operation of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A structural schematic diagram of an impact-resistant and high-airtightness servo motor shaft is proposed for the utility model;

[0021] Figure 2 The utility model proposes a disassembled diagram of a rotating shaft assembly of a servo motor shaft with impact resistance and high air tightness;

[0022] Figure 3 The utility model provides a structural schematic diagram of a servo motor shaft rotating shaft assembly with impact resistance and high air tightness;

[0023] Figure 4 The utility model provides a structural schematic diagram of a sealing component in a servo motor shaft with impact resistance and high air tightness.

[0024] Legend:

[0025] 1. Servo motor body;

[0026] 2. Servo motor body;

[0027] 3. Rotating shaft assembly; 31. Shaft rod; 32. Reinforcement rib; 33. Mounting seat; 34. Thread groove;

[0028] 4. Limiting sleeve; 41. Positioning groove; 42. Extrusion sleeve;

[0029] 5. Sealing assembly; 51. Sealing sleeve; 52. Expansion joint groove; 53. Sealing rubber sleeve; 54. Fault-tolerant groove. DETAILED DESCRIPTION

[0030] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0031] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0032] See also Figure 1 - Figure 4 The utility model provides a technical solution: an impact-resistant and high-airtightness servo motor shaft, comprising: a servo motor body 1, the servo motor body 1 comprises a servo motor body 2 and a rotating shaft assembly 3, the rotating shaft assembly 3 is inserted at the output end of the servo motor body 2, and a sealing assembly 5 is sleeved at one end of the rotating shaft assembly 3 away from the servo motor body 2;

[0033] The sealing assembly 5 comprises a sealing sleeve 51 , an end of the sealing sleeve 51 away from the servo motor body 2 is provided with a sealing rubber sleeve 53 , a fault-tolerant groove 54 is provided on the sealing rubber sleeve 53 , and an expansion joint groove 52 is provided on the end of the sealing assembly 5 close to the sealing rubber sleeve 53 .

[0034] like Figure 4 As shown, the fault-tolerant grooves 54 are distributed in a ring shape, and the angles between two adjacent fault-tolerant grooves 54 are equal. When the sealing rubber sleeve 53 is squeezed under the action of the fault-tolerant grooves 54, the sealing rubber sleeve 53 expands outward at equal intervals, so that the sealing rubber sleeve 53 and the installation point are more closely fitted. When the sealing rubber sleeve 53 is expanded and squeezed outward, the sealing diameter can be increased, thereby improving the sealing effect of the component.

[0035] like Figure 2 and Figure 3 As shown, the shaft assembly 3 includes a shaft rod 31, and mounting seats 33 are provided at both ends of the shaft rod 31. A threaded groove 34 is provided at the end of the shaft rod 31 away from the servo motor body 2, and a limiting sleeve 4 is threadedly connected to the threaded groove 34. The shaft rod 31 is fixedly connected to the output end of the servo motor body 2 through one of the mounting seats 33, and the shaft assembly 3 is fixedly connected to the mounting point through the other mounting seat 33. Further, through the design of the threaded groove 34, the limiting sleeve 4 is threadedly displaced on the shaft rod 31.

[0036] like Figure 2 and Figure 3 As shown, a positioning groove 41 is provided on the limiting sleeve 4, and the positioning grooves 41 are distributed in a ring shape, and the angles between two adjacent positioning grooves 41 are equal. An extrusion sleeve 42 is provided on the side of the limiting sleeve 4 close to the sealing component 5. Through the design of the positioning groove 41, when the limiting sleeve 4 is rotated, it can be assisted by a tool to rotate, and the anti-slip teeth of the rotating tool are engaged with the positioning groove 41, and then the limiting sleeve 4 is rotated, so that the limiting sleeve 4 is more labor-saving when rotating and extruding.

[0037] like Figure 4As shown, the sealing sleeve 51 is sleeved on the end of the rotating shaft assembly 3 away from the servo motor body 2, and the end of the sealing sleeve 51 close to the limiting sleeve 4 is an arc surface structure, and the arc surface angle of the sealing sleeve 51 increases from left to right. Through the design of the arc surface structure of the limiting sleeve 4, the limiting sleeve 4 can first be sleeved on the sealing assembly 5 through the side with a lower arc surface angle when displaced, so as to avoid the sealing assembly 5 having a too large diameter, which causes the limiting sleeve 4 to be unable to be sleeved on the sealing assembly 5.

[0038] like Figure 2 and Figure 3 As shown, reinforcing ribs 32 are embedded and installed on the shaft 31. The reinforcing ribs 32 are distributed in a ring shape, and the angles between two adjacent reinforcing ribs 32 are equal. The strength of the shaft 31 is auxiliary strengthened by the reinforcing ribs 32. Under the action of the reinforcing ribs 32, the shaft 31 is prevented from twisting off during rotation.

[0039] The usage and working principle of the device are as follows: first, the servo motor body 2 is inserted and fixed in the servo motor body 2, and further, one end of the shaft assembly 3 with the limiting sleeve 4 is fixedly connected to the connecting piece through the mounting seat 33. After the fixation is completed, the limiting sleeve 4 is rotated to move toward the sealing assembly 5 until the extrusion sleeve 42 contacts the sealing rubber sleeve 53, and the extrusion sleeve 42 is further rotated to extrude the sealing rubber sleeve 53, so that the sealing rubber sleeve 53 expands outward at equal intervals and contacts the surface wall of the connecting piece by extrusion to form a sealed space. After the installation is completed, the servo motor body 2 is opened to drive the shaft assembly 3 to rotate.

[0040] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. An impact-resistant and highly airtight servo motor shaft, characterized in that: The servo motor body (1) comprises a servo motor body (2) and a rotating shaft assembly (3), wherein the rotating shaft assembly (3) is inserted into the output end of the servo motor body (2), and a sealing assembly (5) is sleeved on one end of the rotating shaft assembly (3) away from the servo motor body (2); The sealing assembly (5) comprises a sealing sleeve (51), one end of the sealing sleeve (51) away from the servo motor body (2) is provided with a sealing rubber sleeve (53), the sealing rubber sleeve (53) is provided with a fault-tolerant groove (54), and the end of the sealing assembly (5) close to the sealing rubber sleeve (53) is provided with an expansion joint groove (52).

2. The impact-resistant and highly airtight servo motor shaft according to claim 1, characterized in that: The fault-tolerant grooves (54) are distributed in a ring shape, and the angles between two adjacent fault-tolerant grooves (54) are equal.

3. The impact-resistant and highly airtight servo motor shaft according to claim 1, characterized in that: The rotating shaft assembly (3) comprises a shaft rod (31), both ends of which are provided with mounting seats (33), and one end of the shaft rod (31) away from the servo motor body (2) is provided with a thread groove (34), and a limit sleeve (4) is threadedly connected to the thread groove (34).

4. The impact-resistant and highly airtight servo motor shaft according to claim 3, characterized in that: The limiting sleeve (4) is provided with positioning grooves (41), the positioning grooves (41) are distributed in an annular shape, and the angles between two adjacent positioning grooves (41) are equal. The limiting sleeve (4) is provided with an extrusion sleeve (42) on one side close to the sealing assembly (5).

5. The impact-resistant and highly airtight servo motor shaft according to claim 1, characterized in that: The sealing sleeve (51) is sleeved on one end of the rotating shaft assembly (3) away from the servo motor body (2), and the end of the sealing sleeve (51) close to the limiting sleeve (4) is an arc surface structure, and the arc surface angle of the sealing sleeve (51) increases from left to right.

6. The impact-resistant and highly airtight servo motor shaft according to claim 3, characterized in that: The shaft rod (31) is embedded with reinforcing ribs (32), the reinforcing ribs (32) are distributed in a ring shape, and the angles between two adjacent reinforcing ribs (32) are equal.

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