Rotary limiting structure

Abstract

The utility model discloses a rotation limiting structure which comprises a rotation base body, a rotation piece rotationally arranged on the rotation base body, a fixing cover covering the rotation piece and fastening screws of the fixing cover and the rotation base body. The rotating base body comprises a rotating base plate, a through opening is formed in the center of the rotating base plate, and an inner circular ring, a connecting circular ring and an outer circular ring are sequentially arranged at the through opening outwards. Convenience is provided for production and assembly; mounting is convenient, repeated dismounting can be achieved, and product maintenance is convenient; the structure is simple, stable and reliable, rotating contact faces are connected through nylon pieces, tightness is adjusted through screw locking, angles are achieved through rotation arc grooves with certain angles formed in components and shaft limiting, and simplicity and convenience are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of rotating parts, in particular to a rotating limiting structure. Background Art

[0002] Mechanical moving parts are very common in medical products. The rotation limit structure can realize the rotation of two or more parts at a certain angle, which provides a lot of options for the structural function of the product and is also very ergonomic. There are many kinds of rotation structures now. There are two main types of rotation limit structures on the market:

[0003] (1) Pure metal parts, the two moving parts rotate through the shaft hole, and the tension and limit are adjusted by tightening the side screws. This structure has high processing costs and extremely high requirements for cooperation. It is not easy to achieve precise angle rotation. The tension is easily scratched by tightening the screws, and the metal parts are not easy to adjust.

[0004] (2) Metal + plastic. The two moving parts rotate through the purchased hardware shaft. The tightness and feel are determined by the manufacturer of the purchased hardware shaft. The tightness cannot be adjusted by yourself, which is inconvenient. Secondly, the connection between the hardware shaft and the plastic parts has high strength requirements, and the plastic parts are very easy to break. Utility Model Content

[0005] In order to solve the above technical problems, the technical solution provided by the utility model is: a rotation limiting structure, comprising a rotating base, a rotating part rotatably arranged on the rotating base, a fixed cover covering the rotating part, and a fixing screw of the fixing cover and the rotating base; the rotating base comprises a rotating chassis, the center of the rotating chassis is provided with a through hole, the through hole is sequentially provided with an inner ring, a connecting ring and an outer ring outward, the inner ring is connected to the connecting ring through several inner connecting plates, the connecting ring is connected to the outer ring through several outer connecting plates, a limiting column is provided on one side of the outer ring, and several screw mounting columns are provided on the inner ring; the middle part of the rotating part is sleeved on the connecting ring, and one side of the rotating part is provided with an arc groove for the limiting column to pass through; the fixing cover is sleeved outside the middle part of the rotating part, and a screw mounting hole for mounting a fastening screw is provided on the upper part of the fixing cover.

[0006] Compared with the prior art, the advantages of the utility model are as follows: in the utility model, a snap-fit ​​design is adopted between the rotating part and the rotating base, and it has the effect of pre-installation and locking, freeing both hands and providing convenience for production and assembly; it is easy to install and can be disassembled repeatedly, which is convenient for product maintenance; the structure is simple, stable and reliable, the rotating contact surface is connected by a nylon sheet, the tightness is adjusted by screw locking, and the angle is achieved by opening a certain angle of rotating arc groove on the component and the shaft limit, which is simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 The utility model is a schematic diagram of the upper structure of a rotation limiting structure.

[0008] Figure 2 The utility model is a schematic diagram of the lower structure of a rotation limiting structure.

[0009] Figure 3 The utility model is a schematic diagram of a split structure of a rotation limiting structure.

[0010] Figure 4 It is a structural schematic diagram of a rotating base in a rotating limiting structure of the utility model.

[0011] Figure 5 The utility model is a structural schematic diagram of a rotating part in a rotation limiting structure.

[0012] Figure 6 The utility model is a structural schematic diagram of a fixed cover in a rotation limiting structure. DETAILED DESCRIPTION

[0013] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0014] In the description of the embodiments of the present utility model, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate an orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, it is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply 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 a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0015] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components must be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0016] In the description of the embodiments of the present invention, "multiple" means at least 2.

[0017] In the description of the embodiments of the present utility model, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 utility model can be understood according to specific circumstances.

[0018] Example:

[0019] Combined with Figure 1-6 The present embodiment discloses a rotation limiting structure, comprising a rotating base 1, a rotating member 2 rotatably arranged on the rotating base 1, a fixed cover 3 covering the rotating member 2, and a fixing screw 4 of the fixed cover 3 and the rotating base 1; the rotating base 1 comprises a rotating chassis 101, a through hole 102 is arranged at the center of the rotating chassis 101, an inner ring 103, a connecting ring 104 and an outer ring 105 are arranged outwardly in sequence at the through hole 102, the inner ring 103 is connected to the connecting ring 104 by a plurality of inner connecting plates 106 The rotating member 2 is connected with a circular ring 104, and the connecting circular ring 104 is connected with the outer circular ring 105 through several outer connecting plates 107. A limiting column 108 is arranged on one side of the outer circular ring 105, and several screw mounting columns 109 are arranged on the inner circular ring 103; the middle part of the rotating member 2 is sleeved on the connecting circular ring 104, and an arc groove 201 for the limiting column 108 to pass through is arranged on one side of the rotating member 2; the fixing cover 3 is sleeved on the outside of the middle part of the rotating member 2, and a screw mounting hole 301 for mounting the fastening screw 4 is arranged on the upper part of the fixing cover 3.

[0020] The rotating member 2 includes an outer rotating ring 202 sleeved on the outside of the rotating chassis 101, an inner rotating ring 203 sleeved on the outside of the connecting ring 104, and a rotating panel 204 connecting the outer rotating ring 202 and the inner rotating ring 203. The arc groove 201 is arranged on the upper part of the rotating panel 204; a nylon sheet 5 is also arranged between the inner rotating ring 203 and the fixed cover 3.

[0021] The fixed cover 3 includes a fixed cover outer wall 302 which is sleeved on the outside of the inner rotating ring 203 and a fixed cover top wall 303 arranged on the top of the fixed cover outer wall 302, and the screw mounting hole 301 is arranged on the fixed cover top wall 303; the screw mounting hole 301 includes a mounting hole 1 301a and a mounting hole 2 301b which are arranged at intervals, and the mounting hole 1 301a and the mounting hole 2 301b are connected by a connecting arc 301c.

[0022] In the specific implementation, the rotating part is first inserted into the rotating base, and limited by the arc groove on the rotating part and the limit column on the rotating base, and then the nylon sheet is placed in the fixed cover and buckled on the rotating part together, and finally the fixing screw is screwed into the screw mounting column on the rotating base to lock the entire structure. The fixing screw can also be pre-installed on the screw mounting column to achieve quick assembly.

[0023] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. A rotation limiting structure, characterized in that: It includes a rotating base, a rotating part rotatably arranged on the rotating base, a fixed cover covering the rotating part, and fastening screws of the fixed cover and the rotating base; the rotating base includes a rotating chassis, a through hole is arranged at the center of the rotating chassis, and an inner ring, a connecting ring and an outer ring are arranged outward in sequence at the through hole, the inner ring is connected to the connecting ring through several inner connecting plates, and the connecting ring is connected to the outer ring through several outer connecting plates, a limiting column is arranged on one side of the outer ring, and several screw mounting columns are arranged on the inner ring; the middle part of the rotating part is sleeved on the connecting ring, and an arc groove for the limiting column to pass through is arranged on one side of the rotating part; the fixed cover is sleeved outside the middle part of the rotating part, and a screw mounting hole for mounting a fastening screw is arranged on the upper part of the fixed cover.

2. A rotation limiting structure according to claim 1, characterized in that: The rotating member comprises an outer rotating ring sleeved on the outside of the rotating chassis, an inner rotating ring sleeved on the outside of the connecting ring, and a rotating panel connecting the outer rotating ring and the inner rotating ring, and the arc groove is arranged on the upper part of the rotating panel.

3. A rotation limiting structure according to claim 2, characterized in that: A nylon sheet is also arranged between the inner rotating ring and the fixed cover.

4. A rotation limiting structure according to claim 1, characterized in that: The fixed cover comprises a fixed cover outer wall sleeved on the outside of the inner rotating ring and a fixed cover top wall arranged on the top of the fixed cover outer wall, and the screw mounting hole is arranged on the fixed cover top wall.

5. The rotation limiting structure according to claim 1, characterized in that: The screw mounting hole comprises a first mounting hole and a second mounting hole which are arranged at intervals, and the first mounting hole and the second mounting hole are connected by a connecting arc.

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