CN201213189Y - A rotating shaft with more than one week of lagging - Google Patents

Abstract

The utility model discloses a rotating shaft with multiple stagnating positions for one cycle, which is manufactured through assembling an axle core, an upper cam, a lower cam, a spring, an axle sleeve and an E buckle together, the assembling process is simpler, the components are small and easy to process, the production time of the product is short, the production capacity is high, meanwhile, the rate of good product during the product manufacture is high, and the cost of the rotating shaft can be reduced. By adopting the rotating shaft in the utility model as the rotating shaft of the communication linkage interface of a data card and a wireless network card, the rotating shaft can be inserted and pulled out from a plurality of positions during rotation for one cycle, the device space can be saved, and the rotating shaft can be carried conveniently by the user.

Description

A rotating shaft with more than one week of lagging

technical field

The utility model relates to a rotating shaft with more than one round of stagnation, which is suitable for wireless network cards, data cards and communication interface components of mobile terminals.

Background technique

As mobile terminal equipment, wireless network cards and data cards have become relatively popular and have become one of the current communication media. With the improvement of people's living standards and the continuous progress of science and technology, mobile terminals have more and more functions, such as web browsing and mail, games, video and MP4 playback, etc. People are more and more powerful in the functions of wireless network cards and data cards, and their requirements for volume are getting smaller and smaller. At the same time, people are also very concerned about the appearance of wireless network cards and data cards. Through the rotating shaft, the USB interface and other communication interfaces can be rotated and stored in the housing, which can protect the USB interface. At the same time, it can stop at a stable position every 90 degrees within a week, which is convenient for users to plug in at several angles and saves space. .

This kind of rotating shaft with more than one week of stagnation has the following advantages: it is convenient to plug and unplug the USB interface of the wireless network card and data card; it does not need to make a USB jacket, which reduces the cost; reduces the occupied space; it can stop at several stagnation positions; the size is small, Applicable to a variety of micro communication equipment. However, the design of the existing rotating shaft with multiple stagnation positions is complicated, and the position in the stagnation area is unstable, which makes it inconvenient for users to use.

Utility model content

The technical problem to be solved by the utility model is to provide a rotating shaft with more than one round of stagnation, which can be used as a communication connection interface between a data card and a wireless network card. carry.

The technical scheme of the utility model is:

A rotating shaft with more than one round of stagnation, including: a shaft core, an upper cam, a lower cam, a spring, a bushing and an E buckle; the upper cam is an active cam, which forms an interference fit with the shaft core, and one end is an external force application part , the end face of the other end is a cylindrical hysteresis surface; the lower cam is a fixed cam, which forms a transition fit with the shaft core and can move in the axial direction of the shaft core. The stagnation curved surfaces are meshed to form a rotation stagnation; the spring is sleeved on the shaft core and assembled behind the lower cam in a prestressed manner; the sleeve is sleeved on the shaft core to surround the upper and lower cams and the spring; the The E buckle is clamped on the shaft core to clamp the shaft sleeve on the shaft core.

Preferably, lubricant is coated on the stagnation curved surfaces of the upper and lower cams.

Preferably, the cylindrical hysteresis surfaces of the upper and lower cams are cylindrical sinusoidal surfaces.

Preferably, four rotation hysteresis are provided on the cylindrical sinusoidal surfaces of the upper and lower cams.

Preferably, the height difference between the cylindrical sinusoidal surfaces of the upper cam and the cam is 1.2 mm, and the height difference between the cylindrical sinusoidal surfaces of the lower cam is 1.1 mm.

Preferably, the shaft core is made of machined metal material.

Preferably, the upper and lower cams are plastic parts.

Preferably, said spring is a machined wire.

Preferably, the sleeve is made of machined metal material.

Preferably, the E buckle is a stamped metal sheet.

The utility model assembles the shaft core, the upper cam, the lower cam, the spring, the shaft sleeve and the E buckle together, the assembly process is relatively simple, the parts are small and the processing is simple, the production time of the product is short, the production capacity is high, and the good product produced at the same time The high efficiency can reduce the cost of the shaft.

Description of drawings

Fig. 1 is a schematic diagram of the shaft core structure of the rotating shaft with more than one week of stagnation in the present invention;

Fig. 2 is a schematic diagram of the structure of the upper cam of the rotating shaft with more than a week of stagnation in the present invention;

Fig. 3 is a schematic diagram of the structure of the lower cam of the rotating shaft with more than a week of stagnation in the present invention;

Fig. 4 is a schematic diagram of the spring structure of the rotating shaft of the present invention with more than one week of stagnation:

Fig. 5 is a schematic diagram of the shaft sleeve structure of the rotating shaft with more than one round of stagnation in the present invention;

Fig. 6 is a schematic diagram of the structure of the E buckle of the rotating shaft with more than a week of stagnation in the present invention;

Fig. 7 is a schematic diagram of the assembly of the rotating shaft with more than one round of stagnation in the present invention.

Detailed ways

The technical scheme of the utility model will be described in detail below in conjunction with the accompanying drawings and through specific embodiments.

In order to solve the problem of reducing the space occupied by wireless network cards and data cards, and facilitating the plugging and unplugging of communication interfaces such as USB interfaces, a rotating shaft with more than one round of hysteresis is added to the fixed USB interface. Data card or wireless network card, while data card or wireless can be stopped at several positions. The main assembly parts and assembly diagram are shown in Figure 1-Figure 7.

Fig. 1 is a schematic diagram of the shaft core structure of a rotating shaft with more than one round of stagnation. The shaft core of the utility model is the connecting key part of the rotating shaft, and the other six parts of the rotating shaft are connected by it. The shaft core can be processed by an automatic lathe of metal materials such as free-cutting steel (SUM233), and has a simple structure and is convenient for mass production.

Fig. 2 is a structural schematic diagram of a cam on a rotating shaft with more than one round of stagnation. The upper cam is an active cam, which is closely assembled with the shaft core to form an interference fit and cannot produce relative movement with the shaft core. The external force exerts a rotational force on the upper cam, which will drive the shaft core and the lower cam to produce axial relative movement. At the same time, due to the spring compression, an axial force is applied to the lower cam, making the upper cam stop at different stagnation positions. It can be injection molded with POM90 plastic, and its joint surface is a cylindrical stagnation surface, preferably a cylindrical sinusoidal surface.

Fig. 3 is a schematic diagram of the structure of the lower cam of the rotating shaft with more than one round of stagnation. The lower cam is a fixed cam, which is sleeved on the shaft core and has a gap with the shaft core to form a transition fit. Under the action of the spring force and the upper cam, the lower cam always moves relative to the axial direction of the shaft core, and other directions are limited by the shaft sleeve. It is made of POM plastic injection molding, and its joint surface is a cylindrical stagnation surface matching the upper cam, preferably a cylindrical sinusoidal surface, but it must be staggered with the upper cam surface. In a preferred embodiment, the height difference of the cylindrical sinusoidal surface of the upper cam is set to be 1.2mm, and the height difference of the cylindrical sinusoidal surface of the lower cam is set to be 1.1mm.

Figure 4 is a schematic diagram of the structure of the rotating shaft spring with more than one round of stagnation. The spring is mainly used to apply force to the lower cam. The spring is assembled with prestress. The spring sleeved on the shaft core is always under force and can be relative to the axial direction of the shaft core. telescopic. It is twisted and formed by CNC machine tools, and its material can be 65Mn or stainless steel wire.

Fig. 5 is a schematic diagram of the structure of the rotating shaft sleeve with more than one week of stagnation. The sleeve surrounds the upper and lower cams and springs. It is also sleeved on the shaft core and fixed by the spring and the E buckle. It is stretched and formed by metal materials such as copper sheets, and then electroplated.

Fig. 6 is a structural schematic diagram of a rotating shaft E buckle with more than one round of stagnation. The E buckle is used to lock the shaft sleeve. It can be stamped and formed by metal materials such as stainless steel.

Fig. 7 is an assembly schematic diagram of the assembly drawing of the rotating shaft with more than one round of stagnation. The assembly sequence of the rotating shaft of the utility model is: shaft core, upper cam, lower cam, spring, axle sleeve, E buckle, when assembling the upper and lower cams, lubricant can also be coated to reduce friction. The parts from left to right in the figure are: upper cam, lower cam, spring and E buckle, the shaft sleeve is sleeved on the upper cam, lower cam and spring, and the shaft core passes through the above parts.

The above content is a further detailed description of the utility model in combination with specific preferred embodiments, and it cannot be assumed that the specific implementation of the utility model is only limited to these descriptions. For a person of ordinary skill in the technical field to which the utility model belongs, without departing from the concept of the utility model, some simple deduction or substitutions can also be made, which should be regarded as belonging to the protection scope of the utility model.

Claims (10)

1. A rotating shaft with more than one round of hysteresis, characterized in that the rotating shaft comprises: a shaft core, an upper cam, a lower cam, a spring, a bushing and an E buckle; The upper cam is an active cam, which forms an interference fit with the shaft core, one end is an external force application part, and the end surface of the other end is a cylindrical stagnation surface; The lower cam is a fixed cam, which forms a transition fit with the shaft core and can move in the axial direction of the shaft core. The end surface of one end of the cam is a cylindrical hysteresis curved surface, which meshes with the hysteresis curved surface of the upper cam to form a rotational hysteresis; The spring is sleeved on the shaft core and assembled behind the lower cam in a prestressed manner; The sleeve is sleeved on the shaft core, enclosing the upper and lower cams and springs; The E buckle is clamped on the shaft core, and is used for clamping the shaft sleeve on the shaft core. 2 . The rotating shaft with more than one round of hysteresis according to claim 1 , wherein lubricant is coated on the hysteresis curved surfaces of the upper and lower cams. 3 . 3. The rotating shaft with multiple hysteresis in one circle according to claim 1, characterized in that, the cylindrical hysteresis curved surfaces of the upper and lower cams are cylindrical sinusoidal curved surfaces. 4. The rotating shaft with multiple hysteresis in one circle according to claim 3, characterized in that, there are four rotational hysteresis on the cylindrical sinusoidal surface of the upper and lower cams. 5 . The rotating shaft with multiple lags in one circle according to claim 3 , wherein the height difference between the cylindrical sinusoidal surfaces of the upper cam and the cam is 1.2 millimeters, and the height difference between the cylindrical sinusoidal surfaces of the lower cam is 1.1 millimeters. 6 . 6. The rotating shaft with multiple stagnation in one circle according to any one of claims 1-3, characterized in that, the shaft core is made of machined metal material. 7. The rotating shaft with multiple lags in one circle according to any one of claims 1-3, wherein the upper and lower cams are plastic parts. 8 . The rotating shaft with more than one round of stagnation according to claim 1 , wherein the spring is a machined metal wire. 9 . 9. The rotating shaft with multiple stagnation in one circle according to any one of claims 1-3, characterized in that, the bushing is made of machined metal material. 10. The rotary shaft with multiple stagnation positions according to any one of claims 1-3, characterized in that, the E buckle is a stamped metal sheet.

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