Novel drive element for a magnetic drive device

By designing the partition groove and connecting rib on the elastic element, the problem of spring stress concentration in the magnetic drive device is solved, realizing the flexible deformation of the elastic element and improving the structural strength, thereby enhancing the stability and service life of the device.

CN224596242UActive Publication Date: 2026-08-04ZHEJIANG RUIHAN TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ZHEJIANG RUIHAN TECH CO LTD
Filing Date
2025-08-21
Publication Date
2026-08-04

AI Technical Summary

Technical Problem

In existing magnetic drive devices, stress concentration on both sides of the spring in the drive element leads to structural instability and shortened service life.

Method used

A partition groove is made on the elastic element to divide it into two parallel elastic bodies, and a connecting rib is set between them to optimize the structural strength and stress distribution of the elastic element.

Benefits of technology

It improves the flexibility and durability of the elastic element, avoids damage to the spring arm caused by stress concentration, and enhances the stability and service life of the magnetic drive device.

✦ Generated by Eureka AI based on patent content.

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Abstract

A new type of driving sub applied to magnetic driving device, including driving sub body, the both sides of the driving sub body are provided with swing arm part, the swing arm part is provided with elastic member on the side away from the center of the driving sub body, the elastic member is provided with separation groove, the separation groove separates the elastic member into two elastic bodies arranged side by side, the connecting rib is arranged between the two elastic bodies, the both ends of the connecting rib are respectively connected with the corresponding elastic body, the elastic member is separated into two independent but connected elastic bodies by the separation groove, the design makes the elastic member more flexible when deformed under stress, and can effectively reduce the stress concentration on the single spring arm. At the same time, the setting of the connecting rib enhances the structural strength between the two elastic bodies, avoids the damage caused by excessive deformation.
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Description

Technical Field

[0001] This utility model relates to the field of hair cutting equipment technology, specifically to a novel actuator applied to a magnetic drive device. Background Technology

[0002] In the prior art, the springs on both sides of the drive element of the magnetic drive device used in the shaving mechanism are usually set as an integral structure. Such springs are prone to stress concentration when subjected to force, which can lead to damage to the spring arms and affect the stability and service life of the magnetic drive device. Summary of the Invention

[0003] In view of this, the present invention provides a novel actuator for use in magnetic drive devices.

[0004] To achieve the above objectives, this utility model provides the following technical solution: A novel actuator for use in a magnetic drive device includes an actuator body, with swing arms on both sides of the actuator body. An elastic element is provided on the side of the swing arm away from the center of the actuator body. A partition groove is formed on the elastic element, dividing the elastic element into two elastic bodies arranged side by side. A connecting rib is provided between the two elastic bodies, and the two ends of the connecting rib are respectively connected to the corresponding elastic bodies.

[0005] Preferably, the elastic element is arranged in a ring structure, and the dividing groove is opened along the circumferential direction of the elastic element.

[0006] Preferably, the connecting rib is located outside the elastic member at a position where its two ends are equidistant from the joint of the swing arm.

[0007] Preferably, the two side-by-side elastic bodies include an inner elastic body and an outer elastic body. The inner elastic body is disposed on the side of the outer elastic body closer to the drive subbody. The connecting rib is disposed between the lower part of the inner elastic body and the lower part of the outer elastic body, and the two ends of the connecting rib are respectively connected to the lower part of the inner elastic body and the lower part of the outer elastic body.

[0008] Preferably, the lower part of the outer elastic body protrudes on the end face away from the inner elastic body to form a reinforcing rib corresponding to the position of the connecting rib.

[0009] Preferably, the width W1 of the upper part of the outer elastic body is smaller than the width W2 of the lower part of the outer elastic body, and the width W3 of the upper part of the inner elastic body is larger than the width W4 of the lower part of the inner elastic body.

[0010] Preferably, the swing direction of the drive subbody is consistent with the arrangement direction between the two elastic bodies.

[0011] Preferably, the maximum thickness of the outer elastomer is greater than the maximum thickness of the inner elastomer.

[0012] Preferably, the drive subbody and the elastic body are smoothly transitioned by an arc surface.

[0013] Preferably, the reinforcing rib has arc-shaped chamfers on both sides.

[0014] The beneficial effects of this invention are as follows: by creating a dividing groove on the elastic element, the elastic element is divided into two independent but interconnected elastic bodies. This design allows the elastic element to deform more flexibly under force and effectively reduces stress concentration on one side of the spring arm. Simultaneously, the connecting rib enhances the structural strength between the two elastic bodies, preventing damage caused by excessive deformation. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Appendix Figure 1 This is a schematic diagram of the structure of this utility model; Appendix Figure 2 For the appendix Figure 1 Another perspective diagram. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] The present invention will now be further described with reference to the accompanying drawings.

[0019] This utility model provides the following technical solution: As attached Figure 1-2As shown, this utility model discloses a novel drive element for a magnetic drive device, including a drive element body 1. Swing arm portions 2 are provided on both sides of the drive element body 1. An elastic element 3 is provided on the side of the swing arm portion 2 away from the center of the drive element body 1. A partition groove 4 is formed on the elastic element 3, dividing the elastic element 3 into two parallel elastic bodies 5. A connecting rib 6 is provided between the two elastic bodies 5, with each end of the connecting rib 6 connected to the corresponding elastic body 5. Specifically, in this design, by forming a partition groove 4 on the elastic element 3, dividing the elastic element 3 into two independent but interconnected elastic bodies 5, this design allows the elastic element 3 to deform more flexibly under force and effectively reduces stress concentration on one side of the spring arm. Simultaneously, the connecting rib 6 enhances the structural strength between the two elastic bodies 5, preventing damage due to excessive deformation.

[0020] Furthermore, the elastic element 3 is arranged in a ring structure, and the dividing groove 4 is formed along the circumference of the elastic element 3. Specifically, in this embodiment, the dividing groove 4 can be evenly distributed in the circumference of the elastic element 3. This layout ensures that the two elastic bodies 5 can deform evenly when subjected to force, further improving the flexibility and durability of the elastic element 3.

[0021] Furthermore, the connecting rib 6 is positioned outside the elastic member 3 at equal distances from the joint of its two ends with the swing arm portion 2. Specifically, in this embodiment, positioning the connecting rib 6 outside the elastic member 3 at equal distances from the joint of its two ends with the swing arm portion 2 prevents weld lines generated during the molding process from forming at the interface of the molten material, allowing the weld lines to transfer to the connecting rib 6, thereby reducing the risk of breakage of the elastic member 3.

[0022] Furthermore, the two side-by-side elastic bodies 5 include an inner elastic body 8 and an outer elastic body 9. The inner elastic body 8 is disposed on the side of the outer elastic body 9 closer to the drive sub-body 1. The connecting rib 6 is disposed between the lower part of the inner elastic body 8 and the lower part of the outer elastic body 9, with its two ends connecting to the lower parts of the inner elastic body 8 and the outer elastic body 9, respectively. Specifically, in this embodiment, this side-by-side arrangement of the inner elastic body 8 and the outer elastic body 9 optimizes the force distribution of the elastic element 3. The inner elastic body 8, being closer to the drive sub-body 1, can more effectively transmit force to the drive sub-body 1 when subjected to force, while the outer elastic body 9 plays a role in buffering and dispersing stress. At the same time, the connecting rib 6, located between the lower parts of the inner elastic body 8 and the outer elastic body 9, not only enhances the connection strength between the two but also makes the entire elastic element 3 structurally more stable, capable of withstanding greater deformation without easily being damaged.

[0023] Furthermore, a reinforcing rib 10 protrudes from the lower part of the end face of the outer elastic body 9 away from the inner elastic body 8, corresponding to the position of the connecting rib 6. Specifically, in this embodiment, the reinforcing rib 10 further enhances the structural strength of the outer elastic body 9, especially at the position corresponding to the connecting rib 6. This design effectively prevents the outer elastic body 9 from breaking near the connecting rib 6 due to excessive deformation during stress. The reinforcing rib 10 not only provides additional support but also optimizes the overall stress distribution of the elastic element 3, making the entire drive substructure more robust and durable.

[0024] Furthermore, the width W1 of the upper part of the outer elastic body 9 is smaller than the width W2 of the lower part of the outer elastic body 9, and the width W3 of the upper part of the inner elastic body 8 is larger than the width W4 of the lower part of the inner elastic body 8. Specifically, in this embodiment, the width of the outer elastic body 9 is designed to be narrower at the top and wider at the bottom. This shape design allows the outer elastic body 9 to better disperse stress when subjected to force, avoiding stress concentration. At the same time, the width of the inner elastic body 8 is designed to be wider at the top and narrower at the bottom. This shape design optimizes the deformation capability of the inner elastic body 8, allowing it to more flexibly transmit force to the drive subbody 1 when subjected to force.

[0025] Furthermore, the swing direction of the drive body 1 is consistent with the arrangement direction between the two elastic bodies 5. Specifically, in this embodiment, the swing direction of the drive body 1 is consistent with the arrangement direction of the two elastic bodies 5. This design maximizes the utilization of the deformation capacity of the elastic bodies 5. When the drive body 1 swings under the action of an external force, the two elastic bodies 5 can deform synchronously and uniformly, effectively absorbing and transmitting force. This design not only improves the stability and durability of the drive body but also optimizes its dynamic performance, making the magnetic drive device run more smoothly and efficiently.

[0026] Furthermore, the maximum thickness of the outer elastomer 9 is greater than the maximum thickness of the inner elastomer 8. Specifically, in this embodiment, the maximum thickness of the outer elastomer 9 is designed to be greater than the maximum thickness of the inner elastomer 8, and this thickness configuration further enhances the load-bearing capacity of the outer elastomer 9. During stress, the outer elastomer 9 can more effectively disperse and absorb stress, preventing damage caused by excessive stress. At the same time, the relatively thinner thickness design of the inner elastomer 8 optimizes its deformation performance, allowing it to deform more flexibly in conjunction with the outer elastomer 9 under stress, thereby ensuring the stability and durability of the entire elastic element 3.

[0027] Furthermore, the drive sub-body 1 and the elastic body 3 are smoothly transitioned by an arc surface. Specifically, in this embodiment, during the operation of the magnetic drive device, the drive sub-body 1 will frequently oscillate, generating dynamic interactions with the elastic body 3. The design of the smooth arc surface transition can effectively disperse the stress generated by these interactions and prevent structural damage caused by stress concentration.

[0028] Furthermore, the reinforcing rib 10 has rounded chamfers on both sides. Specifically, in this embodiment, the design of rounded chamfers on both sides of the reinforcing rib 10 further enhances its structural strength. The presence of the rounded chamfers makes the connection between the reinforcing rib 10 and other parts of the elastomer smoother, reducing the risk of stress concentration. During the stress process, the rounded chamfers can effectively disperse stress and prevent local damage caused by excessive stress.

[0029] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A new type of driving sub applied to a magnetic driving device, comprising a driving sub body (1), swing arm parts (2) are arranged on both sides of the driving sub body (1), and elastic members (3) are arranged on the sides of the swing arm parts (2) far away from the center of the driving sub body (1), characterized in that: The elastic element (3) has a partition groove (4) that divides the elastic element (3) into two elastic bodies (5) arranged side by side. A connecting rib (6) is provided between the two elastic bodies (5), and the two ends of the connecting rib (6) are respectively connected to the corresponding elastic body (5).

2. The novel actuator for a magnetic drive device according to claim 1, characterized in that: The elastic element (3) is arranged in a ring structure, and the partition groove (4) is opened along the circumferential direction of the elastic element (3).

3. A novel drive element for use in a magnetic drive device according to claim 1, characterized in that: The connecting rib (6) is located outside the elastic member (3) at a distance equal to the distance between its two ends and the joint of the swing arm (2).

4. The novel drive element for use in magnetic drive devices as claimed in claim 1, wherein: The two side-by-side elastic bodies (5) include an inner elastic body (8) and an outer elastic body (9). The inner elastic body (8) is located on the side of the outer elastic body (9) close to the drive subbody (1). The connecting rib (6) is located between the lower part of the inner elastic body (8) and the lower part of the outer elastic body (9). The two ends of the connecting rib (6) are respectively connected to the lower part of the inner elastic body (8) and the lower part of the outer elastic body (9).

5. The novel drive element for use in magnetic drive devices according to claim 4, characterized in that: The lower part of the outer elastic body (9) protrudes from the end face away from the inner elastic body (8) to form a reinforcing rib (10) corresponding to the position of the connecting rib (6).

6. A novel drive element for use in a magnetic drive device according to claim 4, characterized in that: The width W1 of the upper part of the outer elastic body (9) is smaller than the width W2 of the lower part of the outer elastic body (9), and the width W3 of the upper part of the inner elastic body (8) is larger than the width W4 of the lower part of the inner elastic body (8).

7. A novel drive element for use in a magnetic drive device according to claim 1, characterized in that: The swing direction of the drive subbody (1) is consistent with the arrangement direction between the two elastic bodies (5).

8. A novel drive element for use in a magnetic drive device according to claim 4, characterized in that: The maximum thickness of the external elastomer (9) is greater than the maximum thickness of the internal elastomer (8).

9. A novel drive element for use in a magnetic drive device according to claim 1, characterized in that: The drive subbody (1) and the elastic element (3) are smoothly transitioned by an arc surface.

10. The novel drive element for use in magnetic drive devices as claimed in claim 5, wherein: The reinforcing rib (10) has arc-shaped chamfers on both sides.