CN222502401U - Rotating shaft fixing mechanism - Google Patents

Abstract

The utility model discloses a rotating shaft fixing mechanism, comprising: an axis, a rotating member is arranged at the first end, and the second end is locked on the target shell; the second end extends into the target shell after passing through the fixing hole on the target shell, and the second end has an expansion opening starting from the end of the second end and extending into the fixing hole; the second end also has a vertically arranged locking expansion hole, and the locking expansion hole is connected with the expansion opening; the locking expansion material is expanded and penetrated into the locking expansion hole. The rotating shaft fixing mechanism in the utility model has high connection strength and high vibration durability.

Description

Rotating shaft fixing mechanism

Technical Field

The utility model relates to the technical field of electronic equipment, in particular to a rotating shaft fixing mechanism.

Background

The rotating shaft is a common part in the machinery, and is usually required to be stably installed in a fixing mode, and the currently common fixing mode of the rotating shaft comprises flange bolt fixing, sleeve bolt fixing, press-in fixing and the like. However, when the fixing device is applied to the fields with high requirements on mechanical connection strength and vibration durability, such as automobiles, the current fixing mode of the rotating shaft is difficult to meet the requirements, and the rotating shaft has high loosening and even disengaging risks. Thus, there is a need to provide a turnover fixing structure with high connection strength and high vibration durability.

Disclosure of utility model

Therefore, in order to solve the problems in the prior art, the utility model provides a rotating shaft fixing mechanism with high connection strength and high vibration durability, wherein the fixed end is provided with a locking expansion hole and a locking expansion material in an extending mode.

To this end, the present utility model provides a rotation shaft fixing mechanism comprising:

the axle center, the first end has rotating parts, the second end locks and attaches to goal shell, the second end extends into goal shell after passing the fixed hole on the goal shell, and the second end has expansion opening starting from the end of the second end and extending into fixed hole;

The locking and attaching expansion materials are expanded and penetrated in the locking and attaching expansion holes.

In an alternative embodiment, the fixing hole is provided with a first limiting plane and a second limiting plane, and the first limiting plane and the second limiting plane are oppositely arranged.

In an alternative embodiment, the axial angle corresponding to the first limiting plane is greater than the axial angle corresponding to the second limiting plane.

In an alternative embodiment, the second end is provided with a third limit plane and a fourth limit plane which respectively correspond to the first limit plane and the second limit plane, and the axial circumferential surfaces of the second end except the third limit plane and the fourth limit plane are embossing circumferential surfaces.

In an alternative embodiment, the lock-up tensioning material is a screw tensioning material or a pin tensioning material.

In an alternative embodiment, the inner wall of the target housing is provided with a clearance groove corresponding to the lock attachment hole.

In an alternative embodiment, the spindle fixing mechanism further includes:

The rotating piece is sleeved outside the damping component and rotates synchronously with the damping component.

In an alternative embodiment, the outer periphery of the damping component is provided with a fixing lug, the inner periphery of the rotating component is provided with a fixing groove corresponding to the fixing lug, and when the rotating component is sleeved outside the damping component, the fixing lug is embedded in the fixing groove, so that the rotating component and the damping component synchronously rotate.

In an alternative embodiment, the damper assembly includes a plurality of damper blades each having a damper opening therein, the damper openings tending to close when the damper assembly is rotated in a first direction, the damper assembly generating a first damper force, the damper openings tending to open when the damper assembly is rotated in a second direction opposite the first direction, the damper assembly generating a second damper force less than the first damper force.

The technical scheme provided by the utility model has the following advantages:

According to the rotating shaft fixing mechanism provided by the utility model, the fixed end (namely the second end locked on the target shell) of the axis of the rotating shaft is arranged and then extends into the target shell after passing through the fixed hole on the target shell, so that the fixed end of the axis generates an expansion reinforcing area, and further, the fixed reinforcement is realized by arranging the expansion opening, the locking and attaching hole and the locking and attaching material, so that the vibration durability is improved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic structural diagram of a rotation shaft fixing mechanism according to an embodiment of the present utility model;

FIG. 2 is an exploded view of the shaft fixing mechanism of FIG. 1;

FIG. 3 is a schematic diagram of a damping assembly in a rotation shaft fixing mechanism according to an embodiment of the present utility model;

FIG. 4 is a schematic diagram of a rotating member in a rotation shaft fixing mechanism according to an embodiment of the present utility model;

Reference numerals illustrate:

1-axis, 1 a-third limit plane, 1 b-fourth limit plane, 11-expansion opening, 12-lock expansion hole;

2-rotating piece, 21-fixed groove, 211-first groove part, 212-second groove part, 22-socket opening and 23-bottom wall part;

3-target shell, 31-fixing hole, 32-avoidance groove;

4-locking and attaching an expanding material;

5-damping assembly, 51-damping fin, 511-damping opening;

6-fixing bump, 61-first sub-block, 62-second sub-block.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected via an intervening medium, or in communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

Referring to fig. 1-4, a structural schematic diagram of a rotating shaft fixing mechanism according to an embodiment of the present utility model is provided, the rotating shaft fixing mechanism includes an axle center 1, a rotating member 2 and a locking and attaching material 4, wherein the rotating member 2 is disposed at a first end of the axle center 1, a second end of the axle center 1 is locked and attached to a target housing 3, the second end of the axle center 1 extends into the target housing 3 after passing through a fixing hole 31 on the target housing 3, the second end has an expansion opening 11 starting from an end of the second end and extending into the fixing hole 31, the second end also has a vertically disposed locking and attaching hole 12, the locking and attaching hole 12 is communicated with the expansion opening 11, and the locking and attaching material 4 is swelled in the locking and attaching hole 12.

In this embodiment, the target housing 3 may be a housing of a forklift, an automobile, or the like, or a housing of a certain component.

In this embodiment, in order to improve the locking stability between the axle center 1 and the target housing 3, as shown in fig. 1 and 2, a first limiting plane and a second limiting plane may be disposed in the fixing hole 31 on the target housing 3, where the first limiting plane and the second limiting plane are disposed opposite to each other, and meanwhile, a third limiting plane 1a and a fourth limiting plane 1b corresponding to the first limiting plane and the second limiting plane respectively are disposed at the second end of the axle center 1, and when the axle center 1 is locked on the target housing 3, the third limiting plane 1a is attached to the first limiting plane, and the fourth limiting plane 1b is attached to the second limiting plane.

In this embodiment, in order to improve the locking stability between the axle center 1 and the target housing 3 and prevent the intensity of the axle center 1 from being affected by the small thickness of the axle center 1 caused by cutting the third limit plane 1a and the fourth limit plane 1b, as shown in fig. 2, an axle center angle of one of the third limit plane 1a and the fourth limit plane 1b may be set relatively large and an axle center angle of the other may be relatively small, that is, an axle center angle corresponding to the first limit plane may be set larger than an axle center angle corresponding to the second limit plane.

In this embodiment, in order to further improve the locking stability between the shaft center 1 and the target housing 3, as shown in fig. 2, the shaft circumferential surfaces of the second end of the shaft center 1 except the third limiting plane 1a and the fourth limiting plane 1b may be embossed circumferential surfaces.

In this embodiment, the rotating member 2 may be directly rotatably sleeved on the first end of the shaft 1. In particular, in order to enable the rotating member 2 to have a certain hovering property, a damping structure may be further provided at the first end of the shaft center 1, and the damping structure is disposed in close proximity to the rotating member 2 and rotates synchronously with the rotating member 2.

In this embodiment, in order to improve the structural compactness of the rotation shaft fixing mechanism, as shown in fig. 2 and 3, a damping assembly 5 included in the rotation shaft fixing mechanism may be sleeved outside the first end of the axle center 1, and the rotating member 2 is sleeved outside the damping assembly 5 and rotates synchronously with the damping assembly 5. Specifically, the outer periphery of the damping component 5 may be provided with a fixing bump 6, and the inner periphery of the rotating member 2 is provided with a fixing groove 21 corresponding to the fixing bump 6, so that when the rotating member 2 is sleeved outside the damping component 5, the fixing bump 6 is embedded in the fixing groove 21, and synchronous rotation between the rotating member 2 and the damping component 5 is realized.

In particular, in order to improve the structural stability of the rotation shaft fixing mechanism, as shown in fig. 3 and 4, the length of the rotation member 2 extending along the axis 1 may be greater than the length of the damping assembly 5 extending along the axis 1, and the first end of the fixing groove 21 extends to the end face of the rotation member 2 near the target housing 3, on which a socket opening 22 is formed, and a bottom wall 23 with a predetermined thickness is formed between the second end of the fixing groove 21 and the end face of the rotation member 2 far from the target housing 3, and when the rotation member 2 is sleeved outside the damping assembly 5, the fixing protrusion 6 in the damping assembly 5 slides into the fixing groove 21 from the socket opening 22 until the fixing protrusion 6 completely enters the fixing groove 21 when the bottom wall 23 abuts against the bottom wall 23, and the damping assembly 5 is wrapped in the rotation member 2.

In this embodiment, as shown in fig. 2 and 3, the damping assembly 5 may further include a plurality of damping fins 51, and the damping fins 51 each have a damping opening 511, when the damping assembly 5 rotates in a first direction, the damping openings 511 tend to be closed, the damping assembly 5 generates a first damping force, when the damping assembly 5 rotates in a second direction opposite to the first direction, the damping openings 511 tend to be opened, and the damping assembly 5 generates a second damping force smaller than the first damping force, so that the rotation shaft fixing mechanism in this embodiment can also meet application situations with different requirements for rotation shaft damping, and has high practicability.

In this embodiment, based on the closing trend of the damper assembly 5 when rotating in the first direction, a small gap may be generated between the damper assembly 5 and the rotating member 2, and thus a small shake may be generated between the damper assembly 5 and the rotating member 2, so, in order to further improve the structural stability of the rotating shaft fixing mechanism, as shown in fig. 3 and 4, in an alternative embodiment, a fixed sub-block on the damper 51 may be provided (when several damper plates 51 are stacked, the fixed sub-block on the damper 51 is stacked to form the above-mentioned fixed bump 6) includes a first sub-block 61 and a second sub-block 62, the first sub-block 61 is connected with the damper plate 51, the second sub-block 62 is connected with the first sub-block 61, and the width of the second sub-block 62 is greater than the width of the first sub-block 61, and accordingly, the fixed slot 21 includes a first slot portion 211 and a second slot portion 212 corresponding to the first sub-block 61 and the second sub-block 62, respectively, and the slot width of the first slot portion 211 is smaller than the slot portion 212, so that when the damper assembly 5 is not tightly connected with the second sub-block 2, the damper assembly is tightly connected with the second sub-block 62.

In this embodiment, in order to further improve the structural compactness of the rotation shaft fixing mechanism, as shown in fig. 2, the inner wall of the target housing 3 may be provided with a clearance groove 32 corresponding to the lock attaching hole 12.

In this embodiment, the locking and attaching expanding material 4 may be a screw expanding material or a pin expanding material, and when the locking and attaching expanding material 4 is a screw expanding material, the locking and attaching expanding hole 12 is a threaded expanding hole correspondingly.

In summary, in the rotating shaft fixing mechanism in this embodiment, the fixed end of the rotating shaft center 1 (i.e. the second end locked to the target housing 3) is disposed and then extends into the target housing 3 after passing through the fixing hole 31 on the target housing 3, so that the fixed end of the shaft center 1 generates an expansion reinforcing area, and further, the expansion opening 11, the locking and attaching hole 12 and the locking and attaching material 4 are disposed in the expansion reinforcing area, so as to realize the fixing reinforcement of the mechanism and improve the vibration durability of the mechanism.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While obvious variations or modifications are contemplated as falling within the scope of the present utility model.

Claims (9)

1. A rotating shaft fixing mechanism, characterized by comprising: The shaft center has a rotating member at the first end and a second end locked on the target shell; the second end passes through the fixing hole on the target shell and then extends into the target shell, and the second end has an expansion opening starting from the end of the second end and extending into the fixing hole; the second end also has a vertically arranged locking expansion hole, and the locking expansion hole is connected to the expansion opening; The locking and expanding material expands and penetrates into the locking and expanding hole. 2 . The rotating shaft fixing mechanism according to claim 1 , wherein a first limiting plane and a second limiting plane are provided in the fixing hole, and the first limiting plane and the second limiting plane are arranged opposite to each other. 3 . The rotating shaft fixing mechanism according to claim 2 , wherein the axial center angle corresponding to the first limiting plane is greater than the axial center angle corresponding to the second limiting plane. 4. The rotating shaft fixing mechanism according to claim 2 or 3 is characterized in that the second end has a third limiting plane and a fourth limiting plane corresponding to the first limiting plane and the second limiting plane respectively, and the axial circumferential surface of the second end except the third limiting plane and the fourth limiting plane is an embossed circumferential surface. 5. The rotating shaft fixing mechanism according to claim 1, characterized in that the locking expansion material is a screw expansion material or a pin expansion material. 6. The rotating shaft fixing mechanism according to claim 1, characterized in that an inner wall of the target housing is provided with an avoidance groove corresponding to the locking expansion hole. 7. The rotating shaft fixing mechanism according to claim 1, further comprising: The damping component is sleeved outside the first end of the axis; the rotating member is sleeved outside the damping component and rotates synchronously with the damping component. 8. The rotating shaft fixing mechanism according to claim 7 is characterized in that a fixing protrusion is provided on the outer periphery of the damping assembly, and a fixing groove corresponding to the fixing protrusion is provided on the inner periphery of the rotating member, and when the rotating member is sleeved outside the damping assembly, the fixing protrusion is embedded in the fixing groove so that the rotating member and the damping assembly rotate synchronously. 9. The rotating shaft fixing mechanism according to claim 8 is characterized in that the damping assembly includes a plurality of damping plates, each of which has a damping opening. When the damping assembly rotates toward a first direction, the damping opening tends to close, and the damping assembly generates a first damping force. When the damping assembly rotates toward a second direction opposite to the first direction, the damping opening tends to open, and the damping assembly generates a second damping force that is smaller than the first damping force.