Rotating shaft fixing mechanism
By setting expansion openings, locking holes and locking material at the fixed end of the rotary shaft fixing mechanism, the shortcomings of the existing technology rotary shaft fixing methods in terms of mechanical connection strength and vibration durability are solved, and a higher connection strength is achieved and vibration durability.
Patent Information
- Application Number
- CN202421232122.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-31
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-05-31
AI Technical Summary
The existing shaft fixing method is difficult to meet the high requirements of automobiles in terms of mechanical connection strength and vibration durability, and there is a risk of loosening and disengagement.
By setting expansion openings, locking holes and locking material at the fixed end of the shaft axis, the expansion strengthening of the fixed end is achieved, and the connection strength and vibration durability are improved.
It effectively improves the connection strength and vibration durability of the shaft fixing mechanism, reducing the risk of loosening and disengagement.
Smart Images
Figure CN222502401U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of electronic equipment, in particular to a rotating shaft fixing mechanism. Background Art
[0002] The rotating shaft is a commonly used part in machinery. It usually needs to be stably installed by fixing. The commonly used fixing methods of the rotating shaft include flange bolt fixing, sleeve pin fixing and press-in fixing. However, when applied to fields with high requirements for mechanical connection strength and vibration durability such as automobiles, the current fixing methods of the rotating shaft are difficult to meet the requirements, and the rotating shaft has a high risk of loosening or even disengagement. Therefore, it is urgent to provide a turnover fixing structure with high connection strength and high vibration durability. Utility Model Content
[0003] Therefore, in order to solve the problems in the prior art, the utility model provides a fixed end extension setting, so that a locking expansion hole and a locking expansion material are set at the fixed end, and a rotating shaft fixing mechanism with high connection strength and vibration durability.
[0004] To this end, the utility model provides a rotating shaft fixing mechanism, comprising:
[0005] The shaft center has a rotating member at the first end and a second end locked to the target shell; the second end passes through the fixing hole on the target shell and 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;
[0006] The locking expansion material expands through the locking expansion hole.
[0007] In an optional embodiment, 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.
[0008] In an optional implementation, the axial center angle corresponding to the first limiting plane is greater than the axial center angle corresponding to the second limiting plane.
[0009] In an optional embodiment, 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 circumference of the second end except the third limiting plane and the fourth limiting plane is an embossed circumference.
[0010] In an optional embodiment, the locking expansion material is a screw expansion material or a pin expansion material.
[0011] In an optional embodiment, the inner wall of the target shell is provided with an avoidance groove corresponding to the locking expansion hole.
[0012] In an optional embodiment, the rotating shaft fixing mechanism further includes:
[0013] The damping component is sleeved outside the first end of the shaft; the rotating member is sleeved outside the damping component and rotates synchronously with the damping component.
[0014] In an optional embodiment, a fixed protrusion is provided on the outer periphery of the damping assembly, and a fixed groove corresponding to the fixed protrusion is provided on the inner periphery of the rotating member. When the rotating member is sleeved outside the damping assembly, the fixed protrusion is embedded in the fixed groove so that the rotating member and the damping assembly rotate synchronously.
[0015] In an optional embodiment, 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 openings tend 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 openings tend to open, and the damping assembly generates a second damping force that is smaller than the first damping force.
[0016] The technical solution provided by the utility model has the following advantages:
[0017] The shaft fixing mechanism provided by the utility model is configured such that the fixed end of the shaft center (that is, the second end locked on the target shell) extends into the target shell after passing through the fixing hole on the target shell, so that the fixed end of the shaft center produces an expansion reinforcement area, and then the fixing reinforcement is achieved by configuring the expansion opening, the locking expansion hole and the locking expansion material, thereby improving the vibration durability. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0019] Figure 1 A schematic diagram of the structure of the rotating shaft fixing mechanism provided in an embodiment of the utility model;
[0020] Figure 2 for Figure 1 Structural exploded diagram of the rotating shaft fixing mechanism;
[0021] Figure 3 A schematic diagram of the specific structure of the damping assembly in the rotating shaft fixing mechanism provided in an embodiment of the utility model;
[0022] Figure 4 A schematic diagram of a specific mechanism of a rotating member in a rotating shaft fixing mechanism provided by an embodiment of the utility model;
[0023] Description of reference numerals:
[0024] 1-axis; 1a-third limiting plane; 1b-fourth limiting plane; 11-expansion opening; 12-locking expansion hole;
[0025] 2-rotating member; 21-fixed groove; 211-first groove portion; 212-second groove portion; 22-sleeve opening; 23-bottom wall portion;
[0026] 3-target housing; 31-fixing hole; 32-avoidance groove;
[0027] 4- Lock and expand the material;
[0028] 5-damping assembly; 51-damping sheet; 511-damping opening;
[0029] 6-fixed protrusion; 61-first sub-block; 62-second sub-block. DETAILED DESCRIPTION
[0030] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0031] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.
[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0033] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.
[0034] Please refer to Figure 1-Figure 4 , is a structural schematic diagram of a rotating shaft fixing mechanism provided by an embodiment of the utility model, the rotating shaft fixing mechanism includes an axis 1, a rotating member 2 and a locking and expanding material 4, wherein the rotating member 2 is arranged at the first end of the axis 1, and the second end of the axis 1 is locked on the target shell 3; the second end of the axis 1 passes through the fixing hole 31 on the target shell 3 and extends into the target shell 3, and the second end has an expansion opening 11 starting from the end of the second end and extending into the fixing hole 31; the second end also has a vertically arranged locking and expanding hole 12, and the locking and expanding hole 12 is connected to the expansion opening 11; the locking and expanding material 4 expands and passes through the locking and expanding hole 12.
[0035] In this embodiment, the target housing 3 may be a shell of a forklift, a car or other equipment, or a shell of a component thereof.
[0036] In this embodiment, in order to improve the locking stability between the shaft 1 and the target shell 3, as shown in FIG. Figure 1 and Figure 2 As shown, a first limiting plane and a second limiting plane can be provided in the fixing hole 31 on the target shell 3, and the first limiting plane and the second limiting plane are arranged relative to each other; at the same time, the second end of the axis 1 has a third limiting plane 1a and a fourth limiting plane 1b corresponding to the first limiting plane and the second limiting plane, respectively; when the axis 1 is locked on the target shell 3, the third limiting plane 1a is in contact with the first limiting plane, and the fourth limiting plane 1b is in contact with the second limiting plane.
[0037] In this embodiment, in order to improve the locking stability between the shaft 1 and the target shell 3, while preventing the third limiting plane 1a and the fourth limiting plane 1b from being cut to reduce the thickness of the shaft 1 and affect the strength of the shaft 1, as shown in FIG. Figure 2 As shown, the axial angle of one of the third limiting plane 1a and the fourth limiting plane 1b can be set to be relatively large, while the axial angle of the other can be relatively small; that is, the axial angle corresponding to the first limiting plane can be set to be larger than the axial angle corresponding to the second limiting plane.
[0038] In this embodiment, in order to further improve the locking stability between the shaft 1 and the target shell 3, as shown in FIG. Figure 2 As shown, the axial circumference of the second end of the shaft core 1 except the third limiting plane 1a and the fourth limiting plane 1b can also be set to be an embossed circumference.
[0039] In this embodiment, the rotating member 2 can be directly rotatably sleeved on the first end of the shaft 1. In specific implementation, in order to enable the rotating member 2 to have a certain degree of suspension, a damping structure can be provided outside the first end of the shaft 1, and the damping structure is arranged closely to the rotating member 2 and rotates synchronously with the rotating member 2.
[0040] In this embodiment, in order to improve the compactness of the structure of the rotating shaft fixing mechanism, as shown in FIG. Figure 2 and Figure 3 As shown, the damping assembly 5 included in the rotating shaft fixing mechanism can be set outside the first end of the shaft 1, and the rotating member 2 can be set outside the damping assembly 5 and rotate synchronously with the damping assembly 5. Specifically, a fixing protrusion 6 can be set on the outer periphery of the damping assembly 5, and a fixing groove 21 corresponding to the fixing protrusion 6 can be set on the inner periphery of the rotating member 2, so that when the rotating member 2 is set outside the damping assembly 5, the fixing protrusion 6 is embedded in the fixing groove 21, so that the synchronous rotation between the rotating member 2 and the damping assembly 5 is realized.
[0041] In specific implementation, in order to improve the structural stability of the shaft fixing mechanism, such as Figure 3 and Figure 4 As shown, the length of the rotating member 2 extending along the axis 1 can be set to be greater than the length of the damping assembly 5 extending along the axis 1, and the first end of the fixing groove 21 is set to extend to the end face of the rotating member 2 close to the target shell 3, and a sleeve opening 22 is formed on the end face, and a bottom wall portion 23 of a preset thickness is provided between the second end of the fixing groove 21 and the end face of the rotating member 2 away from the target shell 3; when the rotating member 2 is sleeved onto the outside of the damping assembly 5, the fixing protrusion 6 in the damping assembly 5 slides into the fixing groove 21 from the sleeve opening 22 until it reaches the bottom wall portion 23 and abuts against the bottom wall portion 23, and the fixing protrusion 6 completely enters the fixing groove 21, and the damping assembly 5 is wrapped in the rotating member 2.
[0042] In this embodiment, Figure 2 and Figure 3 As shown, the damping assembly 5 can also be arranged to include a plurality of damping plates 51, and each of the damping plates 51 has a damping opening 511. When the damping assembly 5 rotates toward a first direction, the damping opening 511 tends to close, and the damping assembly 5 generates a first damping force. When the damping assembly 5 rotates toward a second direction opposite to the first direction, the damping opening 511 tends to open, and the damping assembly 5 generates a second damping force that is smaller than the first damping force. This allows the shaft fixing mechanism in this embodiment to meet application scenarios with different requirements for shaft damping, and has high practicality.
[0043] In this embodiment, the closing tendency of the damping assembly 5 when rotating toward the first direction may cause a small gap between the damping assembly 5 and the rotating member 2, which may further cause a small shake between the damping assembly 5 and the rotating member 2. Therefore, in order to further improve the structural stability of the rotating shaft fixing mechanism, as shown in FIG. Figure 3 and Figure 4 As shown, in an optional embodiment, a fixed sub-block on the damping sheet 51 (when a plurality of damping sheets 51 are stacked, the fixed sub-blocks on the plurality of damping sheets 51 are stacked to form the above-mentioned fixed protrusion 6) may include a first sub-block 61 and a second sub-block 62, the first sub-block 61 being connected to the damping sheet 51, the second sub-block 62 being connected to the first sub-block 61, and the width of the second sub-block 62 being greater than the width of the first sub-block 61; accordingly, the fixed groove 21 includes a first groove portion 211 and a second groove portion 212 corresponding to the first sub-block 61 and the second sub-block 62, respectively, the groove width of the first groove portion 211 being smaller than the groove width of the second groove portion 212, so that when the rotating member 2 is sleeved outside the damping assembly 5, the second sub-blocks 62 on each damping sheet are tightly engaged in the second groove portion 212, and the connection between the damping assembly 5 and the rotating member 2 is stable and will not shake.
[0044] In this embodiment, in order to further improve the compactness of the structure of the rotating shaft fixing mechanism, as shown in FIG. Figure 2 As shown, the inner wall of the target housing 3 may be provided with a avoiding groove 32 corresponding to the locking expansion hole 12 .
[0045] In this embodiment, the locking expansion material 4 can be a screw expansion material or a pin expansion material; when the locking expansion material 4 is a screw expansion material, the locking expansion hole 12 corresponds to a threaded expansion hole.
[0046] In summary, the shaft fixing mechanism in this embodiment, by setting the fixed end of the shaft axis 1 (that is, the second end locked on the target shell 3) to extend into the target shell 3 after passing through the fixing hole 31 on the target shell 3, makes the fixed end of the axis 1 produce an expansion reinforcement area, and then by setting the expansion opening 11, the locking expansion hole 12 and the locking expansion material 4 in the expansion reinforcement area, the fixation reinforcement of the mechanism is realized, thereby improving the vibration durability of the mechanism.
[0047] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the present utility model.
Claims
1. A rotating shaft fixing mechanism, characterized in that: include: 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, characterized in that: The fixing hole has a first limiting plane and a second limiting plane, 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, characterized in that: The axis center angle corresponding to the first limiting plane is greater than the axis center angle corresponding to the second limiting plane.
4. The rotating shaft fixing mechanism according to claim 2 or 3, 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 circumference of the second end except the third limiting plane and the fourth limiting plane is an embossed circumference.
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: The inner wall of the target shell is provided with a avoiding groove corresponding to the locking expansion hole.
7. The rotating shaft fixing mechanism according to claim 1, characterized in that: Also includes: 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, characterized in that: The outer periphery of the damping component is provided with a fixing protrusion, and the inner periphery of the rotating member is provided with a fixing groove corresponding to the fixing protrusion. When the rotating member is sleeved outside the damping component, the fixing protrusion is embedded in the fixing groove, so that the rotating member and the damping component rotate synchronously.
9. The rotating shaft fixing mechanism according to claim 8, 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 openings tend 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 openings tend to open, and the damping assembly generates a second damping force that is smaller than the first damping force.