Motor connecting shaft with extension mechanism

Abstract

The motor connecting shaft with the extension mechanism comprises a shaft rod, the left wall of the shaft rod is fixedly connected with a connecting shaft head, the right wall of the shaft rod is provided with a movable hole, the movable hole is internally and movably connected with a movable shaft, the right wall of the movable shaft is fixedly connected with a connecting shaft barrel, and the connecting shaft barrel is fixedly connected with the connecting shaft head through a plurality of evenly-distributed limiting blocks. The linkage between the shaft rod and the connecting shaft barrel can be achieved, meanwhile, the effect that the movable shaft can move in the movable hole in the shaft rod can be achieved, and therefore the length of the device can be adjusted in cooperation with the extension mechanism. By means of a series of structures, the device has the advantages of being capable of extending and adjusting the length, wide in application range and the like.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of motor connecting shafts, and in particular to a motor connecting shaft with an extension mechanism. Background Technique

[0002] The motor connecting shaft is a cylindrical component extending from the motor and its housing. The shaft is the main support and connecting component of the armature part in the motor, and also the output component of the power generated by the motor. The purpose of the shaft is to convert the electrical energy of the motor into kinetic energy. Precision pins and the motor shaft are used to provide the speed and torque of the motor, and are one of the indispensable important parts in the motor; when the motor connecting shaft of the prior art is in use, due to the lack of an extension mechanism, its length cannot be adjusted, and then the connecting shaft cannot adapt to different usage environments, restricting its scope of application. For this reason, we propose a motor connecting shaft with an extension mechanism. Utility Model Content

[0003] In view of the above problems, the embodiments of the present application provide a motor connecting shaft with an extension mechanism to solve the problems existing in the motor connecting shaft of the prior art.

[0004] A motor connecting shaft with an extension mechanism includes: a shaft rod, a connecting shaft head is fixedly connected to the left wall of the shaft rod, a movable hole is opened on the right wall of the shaft rod, a movable shaft is movably connected in the movable hole, a connecting shaft cylinder is fixedly connected to the right wall of the movable shaft, and an extension mechanism is arranged on the left side of the movable shaft.

[0005] In some embodiments, a plurality of uniformly distributed limiting blocks are fixedly connected to the left side of the movable shaft, and a plurality of limiting grooves matching the limiting blocks are opened on the inner wall of the movable hole. Through the plurality of uniformly distributed limiting blocks, the linkage between the shaft rod and the connecting shaft cylinder can be realized, and at the same time, the movable shaft can move in the movable hole in the shaft rod, so as to cooperate with the extension mechanism to adjust the length of the device.

[0006] In some embodiments, the inner walls of the limiting grooves and the limiting blocks are both polished.

[0007] In some embodiments, key grooves are opened at the top of the connecting shaft head and the top of the inner cavity of the connecting shaft cylinder.

[0008] In some embodiments, the extension mechanism includes a threaded rod, the left end of the threaded rod is movably connected to the left inner wall of the movable hole through a bearing, and a threaded hole matching the threaded rod is opened on the left wall of the movable shaft.

[0009] In some embodiments, a circular empty groove is provided near the middle inside the shaft rod. The left end of the threaded rod passes through the inner ring of the bearing and extends into the circular empty groove, and is fixedly connected with a worm gear. A worm is engaged with the rear wall of the worm gear. A through hole matching the worm is provided at the top of the inner cavity of the circular empty groove. The bottom end of the worm is movably connected with the bottom of the inner cavity of the circular empty groove through a bearing, and the top end of the worm is movably connected with the inner wall of the through hole through a bearing and passes through the inner ring of the bearing and is fixedly connected with a circular block. And a circular groove matching the circular block is provided near the upper part of the inner wall of the through hole. A regular polygon groove is provided at the top of the circular block. An external tool can be used to rotate the circular block to drive the worm to rotate. The worm drives the worm gear to rotate, and then drives the threaded rod to rotate. At this time, the movable shaft cannot rotate under the limiting action of the limiting block, and then moves in the left-right direction until the device is adjusted to an appropriate length, effectively increasing the applicable range of the device.

[0010] The above description is only an overview of the technical solutions of the embodiments of the present application. In order to be able to understand the technical means of the embodiments of the present application more clearly, it can be implemented according to the content of the specification. And in order to make the above and other purposes, features and advantages of the embodiments of the present application more obvious and understandable, the specific embodiments of the present application are specifically described below. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained according to these drawings without creative efforts.

[0012] Figure 1 is a perspective view of the present utility model.

[0013] Figure 2 is a structural schematic diagram of the present utility model.

[0014] Figure 3 is a side view of the shaft rod and the movable shaft of the present utility model.

[0015] Figure 4 is Figure 2 an enlarged view of part A in

[0016] Description of the reference numerals:

[0017] 1, shaft rod; 2, movable shaft; 3, connecting shaft cylinder; 4, threaded rod; 5, limiting block; 6, connecting shaft head; 7, keyway; 8, worm; 9, circular block; 10, worm gear. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the following will clearly and completely describe the technical solutions in the embodiments of this application with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are some, but not all, of the embodiments of this application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in this application without creative efforts belong to the scope of protection of this application.

[0019] The terms "including" and "having" and any variations thereof in the description, claims, and drawings of this application are intended to cover without excluding other contents. The word "a" or "an" does not exclude the existence of multiple. Unless otherwise stated, "multiple" means two or more (including two). Similarly, "multiple groups" means two or more groups (including two groups).

[0020] The orientation terms appearing in the following description are all the directions shown in the figures and do not limit the specific structure of this application. For example, in the description of this application, terms such as "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. This is only for the convenience of describing this application 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 thus should not be construed as a limitation of this application.

[0021] In addition, expressions indicating directions such as the X direction, Y direction, and Z direction used to describe the operations and structures of the components in this embodiment are not absolute but relative. Although these indications are appropriate when the components are in the positions shown in the figures, when these positions change, these directions should have different interpretations to correspond to the change.

[0022] In the description of this application, it should be noted that unless otherwise clearly specified and limited, the terms "mounted", "connected", and "coupled" should be understood in a broad sense. For example, the "connection" or "coupling" of a mechanical structure can refer to a physical connection, such as a fixed connection, a detachable connection, or an integral connection. The "connection" or "coupling" of a circuit structure can refer to not only a physical connection but also an electrical connection or a signal connection. For example, it can be a direct connection, that is, a physical connection, or it can be indirectly connected through at least one intermediate element as long as the circuit is connected. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific situations.

[0023] To facilitate the understanding of the technical solutions of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application.

[0024] A motor connecting shaft with an extension mechanism, characterized in that it includes: a shaft rod 1, a connecting shaft head 6 is fixedly connected to the left wall of the shaft rod 1, a movable hole is opened on the right wall of the shaft rod 1, a movable shaft 2 is movably connected in the movable hole, a connecting shaft cylinder 3 is fixedly connected to the right wall of the movable shaft 2, and a plurality of uniformly distributed limiting blocks 5 are fixedly connected to the left side of the movable shaft 2, and a plurality of limiting grooves matching the limiting blocks 5 are opened on the inner wall of the movable hole. The inner walls of the limiting grooves and the limiting blocks 5 are both polished. Through the plurality of uniformly distributed limiting blocks 5, the linkage between the shaft rod 1 and the connecting shaft cylinder 3 can be realized, and at the same time, the movable shaft 2 can be moved in the movable hole in the shaft rod 1, so as to cooperate with the extension mechanism to adjust the length of the device. Key grooves 7 are opened at the top of the connecting shaft head 6 and the top of the inner cavity of the connecting shaft cylinder 3. An extension mechanism is arranged on the left side of the movable shaft 2. The extension mechanism includes a threaded rod 4. The left end of the threaded rod 4 is movably connected to the left inner wall of the movable hole through a bearing. A threaded hole matching the threaded rod 4 is opened on the left wall of the movable shaft 2. A circular empty groove is opened near the middle in the shaft rod 1. The left end of the threaded rod 4 passes through the inner ring of the bearing and extends into the circular empty groove, and is fixedly connected with a worm gear 10. A worm 8 is meshed with the rear wall of the worm gear 10. A through hole matching the worm 8 is opened at the top of the inner cavity of the circular empty groove. The bottom end of the worm 8 is movably connected to the bottom of the inner cavity of the circular empty groove through a bearing. The top end of the worm 8 is movably connected to the inner wall of the through hole through a bearing and passes through the inner ring of the bearing and is fixedly connected with a circular block 9. And a circular groove matching the circular block 9 is opened near the upper part of the inner wall of the through hole. A regular polygon groove is opened at the top of the circular block 9. When in use, an external tool can be used to rotate the circular block 9 to drive the worm 8 to rotate. The worm 8 drives the worm gear 10 to rotate, and then drives the threaded rod 4 to rotate. At this time, the movable shaft 2 cannot rotate under the limiting action of the limiting blocks 5, and then moves in the left and right directions until the device is adjusted to the appropriate length, effectively improving the application range of the device.

[0025] Those skilled in the art can understand that although some embodiments herein include certain features included in other embodiments rather than other features, the combination of the features of different embodiments means that it is within the scope of the present application and forms different embodiments. For example, in the claims, any one of the claimed embodiments can be used in any combination.

[0026] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than limiting them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present application.

Claims

1. A motor connecting shaft with an extension mechanism, characterized in that, Including: A shaft rod (1), a connecting shaft head (6) is fixedly connected to the left wall of the shaft rod (1), a movable hole is formed in the right wall of the shaft rod (1), a movable shaft (2) is movably connected in the movable hole, a connecting shaft cylinder (3) is fixedly connected to the right wall of the movable shaft (2), and an extension mechanism is arranged on the left side of the movable shaft (2).

2. The motor connecting shaft with an extension mechanism according to claim 1, characterized in that A plurality of uniformly distributed limiting blocks (5) are fixedly connected to the movable shaft (2) near the left side, and a plurality of limiting grooves matching the limiting blocks (5) are formed in the inner wall of the movable hole.

3. The motor connecting shaft with an extension mechanism according to claim 2, characterized in that, The inner walls of the limiting grooves and the limiting blocks (5) are both polished.

4. A motor connecting shaft with an extension mechanism according to claim 1, characterized in that Key grooves (7) are formed in the top of the connecting shaft head (6) and the top of the inner cavity of the connecting shaft cylinder (3).

5. The motor connecting shaft with an extension mechanism according to claim 1, wherein The extension mechanism includes a threaded rod (4), the left end of the threaded rod (4) is movably connected to the left inner wall of the movable hole through a bearing, and a threaded hole matching the threaded rod (4) is formed in the left wall of the movable shaft (2).

6. The motor connecting shaft with an extension mechanism according to claim 5, wherein, A circular empty groove is formed in the shaft rod (1) near the middle, the left end of the threaded rod (4) passes through the inner ring of the bearing and extends into the circular empty groove, and is fixedly connected with a worm wheel (10), a worm (8) is meshed with the rear wall of the worm wheel (10), a through hole matching the worm (8) is formed in the top of the inner cavity of the circular empty groove, the bottom end of the worm (8) is movably connected to the bottom of the inner cavity of the circular empty groove through a bearing, the top end of the worm (8) is movably connected to the inner wall of the through hole through a bearing and passes through the inner ring of the bearing and is fixedly connected with a circular block (9), and a circular groove matching the circular block (9) is formed in the inner wall of the through hole near the upper part, and a regular polygon groove is formed in the top of the circular block (9).

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