CN201166050Y - Pivot structure with compensation torsion - Google Patents

Abstract

A pivot structure with torque compensation comprises a male shaft, a female shaft, a cam and an elastic element, wherein one end of a shaft cylinder part of the female shaft is provided with a concave-convex part which is matched with the cam, the male shaft is connected with the elastic element, the cam and the female shaft in series, and the male shaft and the female shaft have basic torque. Therefore, the male shaft and the female shaft rotate, the cam compresses the elastic element to additionally generate the compensation torque, and in addition, the concave-convex part is arranged on the female shaft part to be matched with the cam, so the service life can be prolonged.

Description

Pivot structure with compensating torque

technical field

The utility model relates to a pivot structure with compensating torsion force, in particular to a pivot structure with compensating torsion force which is used for at least one end of the shaft tube of a female shaft and is provided with a concavo-convex part. pivot structure.

Background technique

In daily life, in order to open and close the foldable objects, a pivot structure is usually installed between the two objects. Please refer to FIG. 1 , a known pivot structure, which includes a female shaft 1a and a male shaft 4a. The female shaft 1a includes a shaft portion 11a and a connecting portion 12a, and the male shaft 4a includes a shaft 41a and a connecting portion 42a. The shaft 41a of the male shaft 4a is rotatably coupled to the shaft portion 11a of the female shaft 1a, the coupling portion 42a of the male shaft 4a is coupled to a first object, and the coupling portion 12a of the female shaft 1a is coupled to a second object. Therefore, the first object can be rotated around the axis of the shaft 41a, so that the first object and the second object can be opened and closed, so as to form the above-mentioned foldable object.

On the level of practical application, in order to make the relative positioning relationship between the male shaft 4a and the female shaft 1a, at least one positioning mechanism is usually provided between the rotation stroke of the shaft rod 41a relative to the shaft part 11a, which may include A set of cams 2a, a set of opposite disc-shaped elastic pieces 3a and a nut 6a locked on the shaft 41a, and the cam 2a includes a first cam 21a and a second cam 22a, the first cam 21a and the second cam 22a The two cams 22a have concavo-convex surfaces that cooperate with each other. The first cam 21a is engaged with the side wall of the shaft part 11a through a wear-resistant sheet 5a. The wear-resistant sheet 5a provides a large amount of friction, so that the first cam 21a follows the parent shaft. 1a rotates, and with the relative rotation between the first cam 21a and the second cam 22a, a positioning relationship is formed between the female shaft 1a and the male shaft 4a. In addition, with the relative rotation between the first cam 21a and the second cam 22a, the second cam 22a presses the set of disc-shaped elastic pieces 3a, so that the set of disc-shaped elastic pieces 3a produces a rebound force, so that the female shaft 1a and the male shaft A torsion force is generated between 4a.

However, after multiple relative rotations between the female shaft 1a and the male shaft 4a, the frictional force between the wear-resistant plate 5a, the first cam 21a and the shaft portion 11a will gradually decrease, causing the female shaft When 1a rotates, the wear-resistant plate 5a cannot rotate the first cam 21a and the second cam 22a, so that a positioning relationship and a torque cannot be generated between the female shaft 1a and the male shaft 4a.

In addition, the torsional force of the female shaft 1a and the male shaft 4a is only generated by the group of disc-shaped elastic pieces 3a, so the torque between the female shaft 1a and the male shaft 4a is too small. When the pivot structure is applied to a notebook computer, for example, When the upper cover of the screen is opened, it will slide down due to too small torsion force, thereby causing inconvenience to the user. The generally known solution is to use an additional fixing structure to generate additional torsion force.

Therefore, the above-mentioned known pivot structure has defects and should be corrected.

Utility model content

The purpose of this utility model is to provide a pivot structure with compensating torsion force. At least one end of the shaft tube of a female shaft is provided with a concave-convex part. The concave-convex part cooperates with a cam to increase the pivot shaft. The service life of the structure and reduce the cost of parts.

Another purpose of this utility model is that the shaft cylinder of the female shaft has a large contact area with the male shaft, so that sufficient basic torque can be generated. In addition, when the male shaft rotates relative to the female shaft, the at least one second When the concave-convex part disengages from the locking position, the elastic element additionally generates a compensating torsion force.

The utility model relates to a pivot structure with compensating torsion force, comprising: a female shaft, including at least one first concave-convex part, which is arranged at at least one end of the female shaft; at least one cam, which has a matching with the first The second concave-convex part of a concave-convex part; at least one elastic element, which is adjacent to the cam; and a male shaft, which is connected in series with the at least one elastic element and the male shaft in the direction of extension and in series with a basic torsion in the direction of extension connected to the female shaft; wherein, when the second concave-convex portion corresponds to a locking position of the at least one first concave-convex portion, the at least one cam and the female shaft are locked to each other; when the male shaft is relative to the female shaft When rotating to make the at least one second concave-convex part disengage from the locking position, the at least one cam compresses the at least one elastic element to additionally generate the compensating torsion force.

The pivot structure with torsion compensation as described above further includes a stopper, which is arranged on the male shaft, and the female shaft, the at least one cam and the at least one elastic piece are clamped by the stopper .

In the above-mentioned pivot structure with torsion compensation, the male shaft has a stopper, and the female shaft, the at least one cam and the at least one elastic piece are clamped by the stopper.

According to the above-mentioned pivot structure with compensating torsion, the female shaft includes a shaft portion, the shaft portion is a hollow columnar body, at least one end of the shaft portion is provided with the at least one concave-convex portion, the The male shaft is connected in series with the shaft barrel.

In the above-mentioned pivot structure with torsion compensation, the female shaft includes a female shaft connecting portion extending from the shaft barrel, and the female shaft connecting portion is used for connecting a mechanism.

In the pivot structure with torsion compensation described above, the inner wall of the at least one cam has an orientation structure that restricts the relative movement direction of the at least one cam and the male shaft to the extension direction.

In the pivot structure with torsion compensation described above, the male shaft is provided with a shaft orientation structure that cooperates with the orientation structure of the cam.

In the above-mentioned pivot structure with torsion compensation, the elastic element is a disc-shaped shrapnel, a spring or an elastic colloid.

In the above-mentioned pivot structure with torsion compensation, the male shaft is provided with a shaft portion, and the shaft portion is connected in series with the at least one elastic element, the at least one cam, and the female shaft along its extending direction.

In the above-mentioned pivot structure with torsion compensation, the male shaft is provided with a male shaft connecting portion for connecting a mechanism.

From the above, the utility model has the following beneficial effects. Since the concave-convex part is arranged on at least one end of the shaft cylinder part of the female shaft, and the concave-convex part cooperates with a cam, it will not be used for a long time as the known technology. As a result, the concave-convex portion and the cam cannot rotate relative to each other, thereby prolonging the service life of the utility model, and reducing the cost of parts due to the lack of a wear-resistant surface and the cam compared with the known technology. In addition, the utility model has a basic torsion force and a compensating torsion force, so as to provide enough torsion force for the connected foldable objects, so there is no need to add other auxiliary devices.

The advantages and spirit of the present invention can be further understood through the following detailed description and accompanying drawings.

Description of drawings

Fig. 1 is an exploded view of a known pivot structure;

Fig. 2 is a perspective view of the first embodiment of the utility model with a pivot structure for compensating torsion;

Figure 3 is an exploded view of the first embodiment of the utility model with a pivot structure for compensating torsion; and

FIG. 4 is an exploded view of a second embodiment of the utility model with a pivot structure for compensating torsion.

Description of main components

[Known technology]

1a. Female shaft 11a. Shaft

12a, connecting part 2a, cam

21a, first cam 22a, second cam

3a, disc shrapnel 4a, male shaft

41a, shaft 42a, connecting part

5a, wear-resistant sheet 6a, nut

[this utility model]

1. Female shaft 11. Shaft barrel

12. The first concavo-convex part 121. Concave surface

122. Convex 1 23. Bevel

13. Female shaft connecting part 131. Female shaft connecting hole

2. Cam 21. The second concave-convex part

211. Concave 212. Convex

213. Inclined plane 22. Directional structure

3. Elastic element 31. Convex part

32. Recess 4. Male shaft

41. Shaft part 411. Shaft orientation structure

42. Male shaft connection part 43. Stop part

44. Gasket

Detailed ways

The utility model arranges a pivot structure on a foldable object so that the foldable object can be opened and closed.

Please refer to FIG. 2 to FIG. 3 , which show the pivot structure for compensating torsion force of the present invention. The pivot structure includes a female shaft 1 , a plurality of cams 2 , a plurality of elastic elements 3 and a male shaft 4 .

The female shaft 1 includes a shaft portion 11 and a female shaft connecting portion 13 . The shaft portion 11 is a hollow column, the male shaft 4 is connected in series to the shaft portion 11, and the opposite ends of the shaft portion 11 along the extension direction are respectively provided with a first concave-convex portion 12, the first concave-convex portion The portion 12 can be composed of several concave surfaces 121, several convex surfaces 122 and several inclined surfaces 123, the concave surfaces 121 and the convex surfaces 122 are alternately arranged, and the concave surfaces 121 and the convex surfaces 122 are connected by one of the inclined surfaces 123. The female shaft connecting portion 13 can extend from the shaft barrel portion 11, the female shaft connecting portion 13 is used to connect a mechanism (not shown, the mechanism can be a top cover of a foldable object), the female shaft connecting portion 13 There may be a plurality of female shaft connection holes 131 which may assist in securing to the mechanism.

In this embodiment, the connecting portion 13 of the female shaft 1 and the shaft portion 11 can be made of a metal sheet by stamping, and the shaft portion 11 can be rolled into a cylindrical structure through the metal sheet, and The shaft portion 11 can also be formed by two metal sheets extending from the female shaft connection portion 13 and a cylindrical reverse or forward double-wrapped structure formed by crimping the two metal sheets.

The cam 2 is an annular structure, one side of the cam 2 is provided with a second concave-convex portion 21, the second concave-convex portion 21 is matched with the first concave-convex portion 12 of the main shaft 1, and the second concave-convex portion 21 has The number and arrangement of the plurality of concave surfaces 211, the plurality of convex surfaces 212 and the plurality of inclined surfaces 213 are all matched with the first concave-convex portion 12, so that the first concave-convex portion 12 and the second concave-convex portion 21 can be closely connected to each other. . The inner wall of the cam 2 is provided with an orientation structure 22, and the male shaft 4 is provided with a shaft orientation structure 411 cooperating with the orientation structure 22 of the cam 2, through which the orientation structure 22 of the cam 2 and the axis of the male shaft 4 The rod orientation structure 411 can limit the relative movement direction of the cam 2 and the male shaft 4 to the extension direction, wherein the orientation structure 22 and the shaft orientation structure 411 can be formed by a plane, a groove and a protrusion that cooperate with each other. composition.

These elastic elements 3 are adjacent to the cam 2. These elastic elements 3 can be a disc-shaped shrapnel. Each of these elastic elements 3 has a convex portion 31 and a concave portion 32. The convex portions of these elastic elements 3 31 are in contact with each other. When an external force compresses the two elastic elements 3, the outer edges of the convex parts 31 of the two elastic elements 3 are in contact, so that an elastic force is generated between the two elastic elements 3. In another embodiment The elastic element 3 can be a spring or an elastic glue.

The male shaft 4 includes a shaft portion 41, a male shaft connection portion 42 and a stop portion 43, the shaft portion 41 is connected in series with the elastic elements 3, the cams 2 and the female shaft 1, the male shaft 4 and the shaft tube portion 11 of the female shaft 1 cooperate with each other and have friction force, so when the male shaft 4 and the female shaft 1 rotate relative to each other, there is a basic gap between the male shaft 4 and the female shaft 1 Torsional force, the shaft part 41 is provided with the shaft orientation structure 411, which is used to limit the moving direction of the cams 2 to the extending direction. The male shaft connecting portion 42 is used to connect a mechanism (not shown, the mechanism can be a lower cover of a foldable object). The stop portion 43 is disposed between the shaft portion 41 and the male shaft connection portion 42, and the stop portion 43 can be integrally formed with the shaft portion 41, or can be separated from the shaft portion 41 as another component. The shaft part 41 of the male shaft 4 can be provided with a stopper 45, the stopper can be a nut, and locked at one end of the shaft part 41, through the stopper part 43 and the stopper The stopper is used to clamp the main shaft 1, the cams 2 and the elastic elements in a fixed range, wherein the stopper 45 can be provided with a washer 44 on the side holding the above-mentioned components to strengthen the stopper 43 Locking, stop function.

When the utility model is implemented, when the second concave-convex portion 21 of the cam 2 corresponds to a locking position of the first concave-convex portion 12 of the main shaft 1, that is, the concave surface 121 of the first concave-convex portion 12 is in contact with The convex surface 212 of the second concave-convex portion 21, the convex surface 122 of the first concave-convex portion 12 is in contact with the concave surface 211 of the second concave-convex portion 21, the cam 2 and the main shaft 1 are locked and positioned with each other, and thereby generate a positioning Effect, at this time, if the male shaft 4 is rotated relative to the female shaft 1, and the second concave-convex portion 21 is disengaged from the locking position, that is, the slope 123 of the first concave-convex portion 12 is in contact with the second concave-convex portion 12 . The inclined surface 213 of the concave-convex part 21, or the convex surface 122 of the first concave-convex part 12 contacts the convex surface 212 of the second concave-convex part 21, the cam 2 therefore moves along the extending direction, and then compresses the elastic elements 3, and the The elastic element 3 also generates an elastic force in the opposite direction to press the cam 2 , so that an additional compensating torque is generated between the cam 2 and the shaft cylinder portion 11 of the main shaft 1 .

Please refer to Fig. 4, which is the second embodiment of the present utility model, which is different from the first embodiment in that the first concave-convex portion 12 is only provided at one end of the shaft cylinder portion 11, the other end is a plane, and the The cam 2 and the elastic elements 3 are also only disposed on the side having the first concave-convex portion 12 .

With the above detailed description of the preferred embodiments, it is hoped that the features and ideas of the present utility model can be described more clearly, and the protection scope of the present utility model is not limited by the preferred specific embodiments disclosed above. On the contrary, according to the above description and the various transformations made on the structural features and functions recorded in the scope of the patent application below, all should be covered within the patent scope of the present utility model.

Claims (10)

1, a kind of pivot structure of tool compensation torsion is characterized in that, the pivot structure of described tool compensation torsion includes:

One female axle, it comprises at least one first jog, and this first jog is arranged at least one end of this mother's axle;

At least one cam, it possesses second jog of this first jog of cooperation;

At least one elastic element, it is adjacent to this cam; And

One public axle is connected in series this mother's axle in this at least one elastic component of bearing of trend serial connection, this public affairs axle and in this bearing of trend with a basic torsion;

Wherein, this second jog is corresponding to a lockmaking position of this at least one first jog, and this at least one cam and this mother's axle be the locking location each other; This public affairs axle can rotate with respect to this mother's axle, and this at least one second jog can break away from this lockmaking position, and this at least one cam constitutes this at least one elastic element ground of compression and is provided with.

2, the pivot structure of tool as claimed in claim 1 compensation torsion, it is characterized in that: further comprise a stop member, it is arranged at this public affairs axle, by this stop member clamping should mother's axle, this at least one cam and this at least one shell fragment element.

3, the pivot structure of tool as claimed in claim 1 compensation torsion, it is characterized in that: this public affairs axle has a blocked part, by this stop member clamping should mother's axle, this at least one cam and this at least one shell fragment element.

4, the pivot structure of tool compensation torsion as claimed in claim 1, it is characterized in that: this mother's axle comprises a beam barrel portion, and this beam barrel portion is a hollow column, and at least one end of this beam barrel portion is provided with this at least one jog, and this public affairs axle is serially connected with this beam barrel portion.

5, the pivot structure of tool compensation torsion as claimed in claim 4 is characterized in that: this mother's axle comprises that one extends female axle joint of this beam barrel portion, and this mother's axle joint is in order to connect a mechanism.

6, the pivot structure of tool compensation torsion as claimed in claim 1 is characterized in that: the inwall of this at least one cam has the oriented structure of direction for this bearing of trend that relatively move that limits this at least one cam and this public affairs axle.

7, the pivot structure of the described tool of claim 6 compensation torsion is characterized in that: this public affairs axle is provided with an axostylus axostyle oriented structure that cooperatively interacts with the oriented structure of this cam.

8, the pivot structure of tool compensation torsion as claimed in claim 1, it is characterized in that: this elastic element is a dish-like shell fragment, a spring or an elastic gel.

9, the pivot structure of tool compensation torsion as claimed in claim 1, it is characterized in that: this public affairs axle is provided with an axle portion, and this axle portion is at its bearing of trend serial connection this at least one elastic element, this at least one cam and this mother's axle.

10, the pivot structure of tool compensation torsion as claimed in claim 1 is characterized in that: this public affairs axle is provided with one in order to connect the public axle joint of a mechanism.

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