Adjustable opening shaft

Abstract

The utility model is suitable for the technical field of shafts, and provides an adjustable open shaft which comprises a stepped shaft body. The open slot is formed in the outer side wall of the stepped shaft body; the latch groove is formed in the bottom of the interior of the open groove; the supporting ring is arranged on the outer side of the stepped shaft body in a sleeving manner; the first groove is formed in the inner side wall of the supporting ring; the second groove is formed in the position, close to one side of the first groove, of the outer side wall of the supporting ring; the threaded hole is formed in the position, close to the position between the first groove and the second groove, in the stepped shaft body; the movable table can be limited in the open groove through meshing between the clamping teeth and the clamping tooth grooves, so that fixing of the supporting ring in the position is achieved, the fixed connection position of the supporting ring and the stepped shaft body is tight, firmness is high, fixing of the supporting ring in different positions of the stepped shaft body can be achieved, and the adaptability of supporting ring installation is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of shafts, and particularly relates to an adjustable split shaft. Background Art

[0002] A shaft is a cylindrical object that passes through the middle of a bearing, a wheel, or a gear. However, a small number of them are square. A shaft is a mechanical part that supports a rotating part and rotates with it to transmit motion, torque, or bending moment. A shaft with different diameters in each section is called a stepped shaft. Generally, a split groove is opened on the stepped shaft, and thus the position of the stepped shaft can be axially changed.

[0003] In the prior art, reference can be made to the Chinese patent with the publication number CN 219119634 U, which discloses an adjustable split shaft, including a stepped shaft, a split groove, and a support ring. The split groove is opened on the circumferential side of the stepped shaft, and the support ring is installed on the circumferential side of the stepped shaft, and one end of the support ring extends into the split groove. The utility model improves the friction between the support ring and the stepped shaft, and thus facilitates fixing the relative position between the support ring and the stepped shaft.

[0004] This comparative document provides an adjustable split shaft. However, when the above patent fixes the support ring on the outside of the stepped shaft, it only realizes fastening through friction. There are many disadvantages in using friction for fixation. If the friction is too large, it is easy to wear the inner wall of the split groove. If the friction is too small, it is difficult to ensure the firmness of fastening.

[0005] Therefore, an adjustable split shaft is proposed. Summary of the Utility Model

[0006] The utility model provides an adjustable split shaft, aiming to solve the above problems.

[0007] The utility model is realized as follows: an adjustable split shaft, including: a stepped shaft body; a split groove opened on the outer side wall of the stepped shaft body; a tooth slot opened at the bottom inside the split groove; a support ring sleeved on the outer side of the stepped shaft body; a first groove opened on the inner side wall of the support ring; a second groove opened at a position on the outer side wall of the support ring close to one side of the first groove; a threaded hole opened at a position inside the stepped shaft body close to the middle between the first groove and the second groove; a screw rod screwed into the threaded hole through a thread; a nut integrally formed at one end of the screw rod; a moving table rotatably connected to the other end of the screw rod; and teeth integrally formed on the outer side wall of the moving table.

[0008] Preferably, the tooth slot and the teeth are meshed and connected.

[0009] Preferably, the cross-section of the first groove is rectangular, and the cross-section of the second groove is circular.

[0010] Preferably, the mobile station matches and fits with the first groove.

[0011] Preferably, two first grooves and two second grooves are provided, and the two first grooves and the two second grooves are symmetrically provided on the inner side wall and the outer side wall of the support ring respectively.

[0012] Preferably, a slotted screwdriver groove is provided on the outer wall of the nut away from the screw rod.

[0013] Compared with the prior art, the embodiments of the present application mainly have the following beneficial effects:

[0014] Through the engagement between the teeth and the tooth grooves, the limit of the mobile station in the opening groove can be realized, so as to realize the fixation of the position of the support ring. The fixed connection between the support ring and the stepped shaft body is tight and has strong firmness, and the fixation of the support ring at different positions on the stepped shaft body can be realized, improving the adaptability of the support ring installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural view of the present utility model;

[0016] Figure 2 is an exploded view of the support ring of the present utility model;

[0017] Figure 3 is a cross-sectional view of the support ring of the present utility model;

[0018] Figure 4 is the present utility model Figure 1 The enlarged view at A in.

[0019] In the figure: 1, stepped shaft body; 2, opening groove; 3, tooth groove; 4, support ring; 5, first groove; 6, second groove; 7, threaded hole; 8, screw rod; 9, nut; 10, mobile station; 11, teeth. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above drawings are intended to cover non-exclusive inclusion. The terms "first", "second", etc. in the specification and claims of this application or the above drawings are used to distinguish different objects and are not used to describe a specific order.

[0021] References to "embodiments" in this document mean that the specific features, structures, or characteristics described in connection with the embodiments can be included in at least one embodiment of the present application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0022] An embodiment of the present utility model provides an adjustable split shaft, as Figures 1 - 4 shown, which includes a stepped shaft body 1. An opening groove 2 is formed on the outer wall of one side of the stepped shaft body 1. A tooth groove 3 is formed at the inner bottom of the opening groove 2. A support ring 4 is sleeved on the outer side of the stepped shaft body 1. A first groove 5 is formed on the inner wall of one side of the support ring 4, and a second groove 6 is formed at a position close to one side of the first groove 5 on the outer wall of one side of the support ring 4. The cross-section of the first groove 5 is rectangular, and the cross-section of the second groove 6 is circular. Two first grooves 5 and two second grooves 6 are formed respectively, and the two first grooves 5 and the two second grooves 6 are symmetrically formed on the inner side wall and the outer side wall of the support ring 4 respectively. A threaded hole 7 is formed at a position between the first groove 5 and the second groove 6 inside the stepped shaft body 1. A screw 8 is screwed into the threaded hole 7 through threads. A nut 9 is integrally formed at one end of the screw 8. The other end of the screw 8 is rotatably connected to a moving table 10. The moving table 10 is matched and fitted with the first groove 5. A tooth 11 is provided on the outer wall of one side of the moving table 10.

[0023] It should be noted that since the existing adjustable split shaft only realizes fastening by friction when fixing the support ring on the outer side of the stepped shaft, there are many disadvantages in using friction to achieve fixation. If the friction is too large, it is easy to wear the inner wall of the opening groove. If the friction is too small, it is difficult to ensure the firmness of fastening. In this embodiment, the engagement between the tooth 11 and the tooth groove 3 can realize the limitation of the moving table 10 in the opening groove 2, so as to realize the fixation of the position of the support ring 4. The fixed connection between the support ring 4 and the stepped shaft body 1 is tight and has strong firmness, and the support ring 4 can be fixed at different positions on the stepped shaft body 1, improving the adaptability of the installation of the support ring 4.

[0024] Specifically, in this embodiment, the solution mainly includes a tooth slot 3 and teeth 11. During use, the support ring 4 is sleeved on the outer wall of the stepped shaft body 1, and it is moved on the stepped shaft body 1 according to the required position of the support ring 4. After the support ring 4 is moved to the required position, a flat-blade screwdriver is inserted into the nut 9 and rotated. The nut 9 drives the screw rod 8 to rotate. Through the threaded connection between the screw rod 8 and the stepped shaft body 1, the rotational connection between the screw rod 8 and the moving table 10, and with the limit of the moving table 10 by the first groove 5, one end of the screw rod 8 pushes the moving table 10 to move, and the teeth 11 on the moving table 10 move synchronously. The teeth 11 are inserted into the opening slot 2 and then into the tooth slot 3, and the teeth 11 and the tooth slot 3 are engaged, realizing the fixation of the support ring 4 at different positions on the stepped shaft body 1.

[0025] In a further preferred embodiment of the present utility model, as Figures 1 - 4 shown, the tooth slot 3 and the teeth 11 are in meshing connection.

[0026] In this embodiment, due to the limiting ability brought by the meshing connection, the teeth 11 cannot move in the tooth slot 3, thereby realizing the fixation of the support ring 4 at different positions on the stepped shaft body 1.

[0027] In a further preferred embodiment of the present utility model, as Figures 1 - 2 shown, a flat slot is provided on the outer wall of the nut 9 on the side away from the screw rod 8.

[0028] In this embodiment, it is convenient to use a screwdriver to rotate the nut 9.

[0029] It should be noted that for the foregoing embodiments, for the sake of simple description, they are all expressed as a series of action combinations. However, those skilled in the art should know that the present utility model is not limited by the described action sequence, because according to the present utility model, certain steps may be in other sequences or performed simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily essential to the present utility model.

[0030] In several embodiments provided by the present application, it should be understood that the disclosed device can be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the above-mentioned unit division can have other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point, the displayed or discussed coupling or communication connection between each other can be through some interfaces, and the indirect coupling or communication connection between devices or units can be in the form of telecommunications or other forms.

[0031] The units described above as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0032] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the protection scope of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on these embodiments, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art can still, without conflict and without creative work, combine, add, delete or make other adjustments to the features in the embodiments of the present invention according to the circumstances, so as to obtain different technical solutions that are essentially not divorced from the concept of the present invention, and these technical solutions also belong to the scope of protection of the present invention.

Claims

1. An adjustable split shaft, characterized in that Including: Stepped shaft body (1); Open slot (2) formed on the outer wall of the stepped shaft body (1); Tooth slot (3) formed at the inner bottom of the open slot (2); Support ring (4) sleeved on the outer side of the stepped shaft body (1); First groove (5) formed on the inner wall of the support ring (4); and Second groove (6) formed at a position on the outer wall of the support ring (4) close to one side of the first groove (5); Threaded hole (7) formed inside the stepped shaft body (1) at a position between the first groove (5) and the second groove (6); Screw (8) screwed into the threaded hole (7) by threads; Nut (9) integrally formed at one end of the screw (8); Moving table (10) rotatably mounted at the other end of the screw (8); Tooth (11) integrally formed on the outer wall of the moving table (10).

2. The adjustable open shaft according to claim 1, characterized in that, The tooth slot (3) and the tooth (11) are meshed and connected.

3. The adjustable opening shaft according to claim 1, wherein, The cross-section of the first groove (5) is rectangular, and the cross-section of the second groove (6) is circular.

4. An adjustable opening shaft according to claim 1, characterized in that, The moving table (10) and the first groove (5) are matched and fitted.

5. An adjustable open shaft according to claim 1, wherein, Both the first groove (5) and the second groove (6) are provided with two, and the two first grooves (5) and the two second grooves (6) are symmetrically formed on the inner wall and the outer wall of the support ring (4) respectively.

6. The adjustable opening shaft according to claim 1, wherein A slotted cross recess is formed on the outer wall of the nut (9) on the side far from the screw (8).

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