CN2573750Y - Pivot device - Google Patents

Abstract

A pivot device for pivotally connecting a host and an LCD display, comprising: the pivot piece comprises a mounting part and a shaft piece, the mounting part is fixed on the host machine, and the shaft piece is provided with at least one rotation stopping part; a pivot bracket, which comprises a mounting part and a pair of bearing parts, wherein the mounting part is fixed on the LCD display, and the bearing parts are used for the shaft part to rotatably penetrate through; a first torsion spring is sleeved on the shaft element, and a friction positioning device comprises a positioning element, a buffer assembly and a friction block arranged between the positioning element and the buffer assembly; the positioning element is provided with a friction surface and a through hole, and the through hole is sleeved on the shaft piece and coupled with the rotation stopping part; the buffer assembly is arranged between the pivoting bracket and the friction block; the friction block is clamped between the buffer assembly and the positioning element. The utility model discloses can prolong pivot device's life, but the visual angle of person of facilitating the use adjustment display.

Description

pivot device

【Technical field】

The utility model relates to a pivot device with a positioning element, in particular to a pivot device which is used to pivotally connect the host of a portable computer/electronic dictionary and related LCD display products so as to adjust the opening angle of the LCD display .

【Background technique】

Generally, between the LCD display of a portable computer and the host computer, a pair of rotating shafts are pivotally connected. The previous technology has disclosed a rotating shaft with a cam block and an elastic friction member fixed on the pivot bracket; the elastic friction member rubs and slides on the surface of the cam block to properly adjust the angle between the host and the LCD display . And this kind of prior art can reach predetermined effect, but because the elastic friction member is solidified on the pivot member, and the friction contact force between it and the cam block will be too large along with the variation of the cam block profile. Ups and downs; that is, when the profile of the cam block decreases, the frictional contact force decreases suddenly, so that the strong pivoting force of the torsion spring is not relieved during the process of opening the LCD display, so when the LCD display automatically stops due to pivoting positioning, The inertia of the LCD display causes vibrations of the host and the LCD display, and thus shortens the life of the pivot device. Therefore, it is necessary to provide a pivot device with a buffer assembly to prolong the service life of the pivot device.

【Content of utility model】

The purpose of this utility model is to provide a pivot device, which can enable the LCD display to have the function of elastic opening. When the display is elastically opened to a predetermined viewing angle, the user can still further adjust the viewing angle of the display back and forth according to needs, so as to meet the needs of the user. It is convenient in lighting; it can make the opening speed of the LCD display gentle, and fully improve the positioning of the host and the display; it can also provide a buffer mechanism for the friction structure to avoid excessive wear of the mechanical parts and improve the life of the pivot device.

In order to achieve the above purpose, the utility model provides a pivot device, which is characterized in that it includes:

A pivoting part, which includes a mounting part and a shaft extending along a pivot axis, the mounting part is fixed to the main machine, and at least one anti-rotation part is provided on the shaft;

A pivoting bracket, which includes a mounting portion and a pair of receiving portions, the mounting portion is fixed to the LCD display, and the receiving portion is rotatably passed through by the shaft;

A first torsion spring, which is sleeved on the shaft member, and has a first end and a second end respectively biasing the pivot member and the pivot bracket;

A friction positioning device, which includes a positioning element, a buffer assembly and a friction block arranged between the positioning element and the buffer assembly; wherein

The positioning element has a friction surface and a through hole. The friction surface is centered on the through hole and is fired into a profile similar to the side wall of the cam. The through hole is sleeved on the shaft and coupled with the anti-rotation part;

The buffer assembly is arranged between the pivot bracket and the friction block;

The friction block is clamped between the buffer assembly and the positioning element, and elastically pressed against the friction surface of the positioning element.

The utility model can also have the following additional technical features:

A hollow cylinder can be coaxially sleeved in the first torsion spring.

The shaft part of the pivoting part may be provided with a notch-shaped fixing piece receiving one end of the torsion spring.

The buffer assembly may include a column and at least one buffer element, the column is supported by the pivot bracket and extends along a longitudinal axis perpendicular to the shaft; the at least one buffer element is sleeved on the column.

The cushioning element may include at least one elastic washer.

A slit can be arranged on the elastic washer.

The elastic gasket includes at least one of arched elastic sheets and wave-shaped elastic sheets.

The buffer element may include at least one disc-shaped elastic piece.

A slit can be arranged on the dish-shaped shrapnel.

The cushioning element may comprise a helical spring.

The buffer element can be an elastic piece.

The friction block and the column are coupled with each other through a fall-off prevention structure.

The falling-off prevention structure includes wave-shaped joint surfaces respectively arranged on one side of the friction block and the opposite side of the pillar.

The pivot device of the present invention may further include a second torsion spring, and two ends of the second torsion spring respectively bias the receiving portion of the pivot member and the pivot bracket to be opposite to the first torsion spring.

The pivot device of the present utility model may also include a set of cover pieces disposed outside the combination of the pivot bracket and the friction positioning device.

A groove is arranged at the end of the shaft member, and a binding member is embedded in the groove.

The pivot device of the present utility model has the following advantages: 1. The LCD display has the function of elastically opening; Users seek the convenience of lighting; 3. The opening speed of the LCD display is gentle, which fully improves the positioning of the host and the display; 4. A buffer mechanism is provided for the friction structure to avoid excessive wear of the mechanical parts and improve the life of the pivot device.

The utility model will be further described in detail in conjunction with the preferred embodiments shown in the accompanying drawings, so as to clarify its structural features and advantages in detail.

【Description of drawings】

Fig. 1 is the three-dimensional exploded view of the first embodiment of the utility model;

Fig. 2 is the three-dimensional exploded view of the second embodiment of the present utility model;

Fig. 3 is a three-dimensional exploded view of a third embodiment of the present utility model;

Fig. 4 is the three-dimensional assembly diagram of the third embodiment of the present utility model;

Fig. 5a is a three-dimensional combined view of the fourth embodiment of the present utility model;

Fig. 5b is a schematic diagram of the shrapnel in Fig. 5a;

Fig. 5c is a partial cross-sectional view of the structural relationship between the elastic piece, the pivot bracket and the slidable friction block in Fig. 5a.

【Detailed ways】

As shown in Figure 1, the pivot device 1 of the first embodiment of the present utility model includes: a pivot member 10, a pivot bracket 20, a first torsion spring 30, a friction positioning device 40, and a binding member R.

The pivoting member 10 includes a mounting portion 12 and a shaft 14 extending along a pivoting axis x. The mounting portion 12 is used to fix the pivoting member 10 on a host (not shown). At least one anti-rotation portion 16 is formed on the shaft member 14 to prevent rotation. The at least one anti-rotation portion 16 preferably includes at least one flat surface formed on the top or bottom of the shaft member 14 .

The pivot bracket 20 includes a mounting portion 22 and a pair of receiving portions 24 . The mounting portion 22 is used to fix the pivot bracket 20 to an LCD display (not shown). The receiving portion 24 is provided with a pivoting circular hole 26 through which the shaft member 14 can pivot. The shaft 14 passes through the back of the pivot bracket 20 , and the pivot bracket 20 can rotate along the pivot axis X of the shaft 10 through the pivot hole 26 .

The first torsion spring 30 is sheathed on the shaft member 14, and has a first end 32 and a second end 34 respectively biased relative to the pivot member 10 and the pivot bracket 20, so as to be between the pivot member 10 and the pivot bracket 20 provide relative rotational torque. The first end 32 and the second end 34 can be coupled with the pivoting member 10 and the pivoting bracket 20 in various engagement ways, for example, a notch-shaped fixing piece 17 with a notch 17a can be provided on the pivoting member 10 And a tab 28 is provided on the pivot bracket 20 . The gap between the first torsion spring 30 and the shaft member 14 may cause noise when the spring 30 pivots. At this time, a coaxial sleeve 36 can be sleeved inside the first torsion spring 30 to absorb the spring noise. The material of sleeve 36 is preferably PVC plastics.

The friction positioning device 40 includes a positioning element 50 , a buffer assembly 60 , and a friction block 70 sandwiched between them. The positioning element 50 has a friction surface 52 and a through hole 54 . The friction surface 52 is roughly centered around the through hole 54 to form a contour with different curvatures, similar to a cam configuration. The part with larger curvature in the cam configuration has a larger friction force with the friction block 70 and can be used as a pivoting stop point. The through hole 54 is sleeved on the shaft 14 and coupled with the anti-rotation portion 16 to prevent the positioning element 50 from rotating relative to the shaft 14 .

The buffer assembly 60 preferably includes a pillar 62 and at least one buffer element 64 . The column member 62 extends substantially along a longitudinal axis y supported by the pivot bracket 20, which is substantially perpendicular to the pivot axis x of the pivot member 10. The at least one buffer element 64 is sleeved on the post 62 and provides elastic buffering force to the post 62 . The buffer element 64 is preferably a disc-shaped elastic piece 64a or a slit-shaped disc-shaped elastic piece 64b, and can also be an arched elastic piece (not shown), a wave-shaped elastic piece (not shown), or a single coil spring (not shown). The friction block 70 is a single component, which is elastically pressed against the friction surface 52 of the positioning element 50 by being elastically pushed up by the buffer element 64 and the post 62 . Preferably, an anti-falling structure is provided between the friction block 70 and the column 62 (for example, a pair of interfitting wave-shaped joint surfaces 72a respectively located on one side of the friction block and the opposite side of the column), so that the The sliding friction block 70 is not easy to slip off during the movement.

When in use, first the pivoting member 10, the pivoting bracket 20, the first torsion spring 30, and the friction positioning device 40 are assembled on the shaft member 14 of the pivoting member 10, and the free end of the shaft member 14 is tied with a The parts R are connected in series to assemble the pivot device 1 . The mounting portion 12 of the pivoting member 10 and the mounting portion 22 of the pivoting bracket 20 are respectively fixed on the host and the LCD display, so the pivot device 1 can pivot between the host and the LCD display.

When the pivot bracket 20 pivots, the pillar 62 continuously pushes the friction block 70 under the elastic force provided by the buffer element 64 , so that the friction block 70 rubs against the friction surface 52 of the positioning element 50 . The post 62 bearing on the slidable friction block 70 moves along its longitudinal axis y due to the change in curvature of the friction surface 52 . The configuration of the buffer element 64 buffers the movement of the post 62 and makes the pivoting speed of the entire pivoting bracket 20 increase or decrease as the curvature of the friction surface 52 becomes smaller or larger. When the slidable friction block 70 moves to the part where the curvature gradually increases in the friction surface 52, the pivoting action will automatically and gradually stop at a predetermined angular position due to the increase of the friction force, and at this time it can still be adjusted according to actual needs. Adjust the viewing angle of the LCD monitor manually.

Fig. 2 is a pivot device 100 of a second embodiment similar to the first embodiment, which includes: a pivot member 110, a pivot bracket 120, first and second torsion springs 130 and 130', a friction positioning device 140, and a binding piece E.

The pivoting member 110 includes a mounting portion 112 and a shaft 114 . At least one anti-rotation portion 116 is formed on the shaft member 114 to prevent rotation. The at least one anti-rotation portion 116 preferably includes at least one flat surface formed on the top or bottom of the shaft member 114 . The free end of the shaft 114 can be provided with a groove 118 for engaging with the binding member E. As shown in FIG.

The pivot bracket 120 includes a mounting portion 122 and a pair of receiving portions 124 . The mounting portion 122 is used to fix the pivot bracket 120 to an LCD display (not shown).

The first and second torsion springs 130, 130' are sleeved on the shaft member 114, and their first ends 132, 132' and second ends 134, 134' are respectively biased relative to the pivot member 110 and the pivot bracket 120, so as to A relative rotational torque is provided between the pivot member 110 and the pivot bracket 120 .

The friction positioning device 140 includes a positioning element 150 , a buffer assembly 160 , and a detachable and slidable friction block 170 clamped therebetween. The positioning element 150 has a friction surface 152 and a through hole 154 . The friction surface 152 is roughly formed into a contour with different curvatures, similar to a cam configuration; wherein the part with a greater curvature has a greater friction force with the friction block 170 and can be used as a pivoting stop point. The through hole 154 is sleeved on the shaft 114 and coupled with the anti-rotation portion 116 to prevent the positioning element 150 from rotating relative to the shaft 114 .

The buffer assembly 160 preferably includes a post 162 and at least one buffer element 164 . The at least one buffer element 164 is sleeved on the post 162 and provides elastic buffering force to the post 162 . The buffer element 164 is preferably a disc-shaped elastic piece 164a or a split-shaped disc-shaped elastic piece 164b with a slit. An anti-falling structure is preferably provided between the slidable friction block 170 and the column 162 (such as a groove 172 with a depth is provided on the slidable friction block 170 to be sleeved on the peripheral wall 162w at the end of the column 162), preventing The slidable friction block 170 falls off during the movement. The slidable friction block 170 is elastically pushed against the friction surface 152 of the positioning element 150 by the elastic push of the buffer element 164 and the post 162 .

3 and 4 disclose the pivot device 200 of the third embodiment of the present invention, including a pivot member 210, a pivot bracket 220, a first torsion spring 230, a friction positioning device 240, and a tie piece R.

The embodiment in Fig. 3 and Fig. 4 is mainly partially modified according to the pivot device 1 of the first embodiment. The exterior of the combination of the positioning device 240 is used to prevent dust. All such similar equivalent replacements do not depart from the protection scope of this case.

The pivot device 300 of the fourth embodiment shown in FIG. 5a is another implementation state of the foregoing embodiments, which includes a pivot member 310, a pivot bracket 320, first and second torsion springs 330, 330', A friction positioning device 340 (as shown in FIG. 5c ), and a binding member R.

Especially, the friction positioning device 340 is composed of an elastic piece 360 and a friction block 70 coupled with each other. The elastic piece 360 is roughly U-shaped with a pair of legs 362 , 364 (see FIG. 5 b ), wherein one leg 362 is used to be mounted on the pivot bracket 320 , and the other leg 364 is abuttingly coupled to the friction block 70 . The coupling between the elastic sheet 360 and the friction block 70 is preferably in a wave configuration, so as to prevent the friction block 70 from slipping during movement.

When assembling the elastic piece 360, the foot 362 of the elastic piece 360 and a wall 321 of the pivot bracket 320 can be fixed to each other by a fastener such as a screw N (as shown in FIG. 5c ), so that the other foot 364 of the elastic piece 360 can rub against each other Block 70 is resiliently biased.

Of course, the utility model can also be implemented in other specific forms without departing from the spirit and important characteristics of the utility model. Therefore, the above-listed embodiments should be regarded as illustrative rather than restrictive in all aspects, and all changes that do not depart from the spirit and important characteristics of the utility model should be included in the scope of protection of the present application.

Claims (16)

1, a kind of pivot device is characterized in that: comprising:

One pivot member, it comprises an assembly department and an axle part along pivot axis extension, this assembly department is fixed on the main frame, and this part is provided with at least one rotation prevention portion;

One pivot brackets, it comprises an assembly department and a pair of carrier, this assembly department is fixed on the LCD display, and this carrier is rotatably to wear thereon for this part;

One first torque spring, it is sheathed on a part, and has respectively first end and second end to this pivot member and pivot brackets bias voltage;

One friction positioning device, it comprises that a positioning element, a buffering assembly and be located at positioning element and the brake pad of buffering between the assembly; Wherein

This positioning element has a friction surface and a penetration hole, and this friction surface is to be that the profile that burns till an approximate cam sidewall is encircled at the center with this penetration hole, and this penetration hole is set on the part and with rotation prevention portion and is coupled;

This buffering assembly is located between this pivot brackets and the brake pad;

This brake pad is held between buffering assembly and this positioning element, presses on the friction surface of positioning element with elasticity.

2, pivot device according to claim 1 is characterized in that: a coaxial sheathed hollow cylinder in this first torque spring.

3, pivot device according to claim 1 is characterized in that: the axle part of this pivot member is provided with an indentations fixed plate of accepting torque spring one end.

4, pivot device according to claim 1 is characterized in that: this buffering assembly comprises a column piece and at least one buffer element, and this column piece is subjected to the pivot brackets rest and extends in the vertical longitudinal shaft of this part along one; This at least one buffer element is sheathed on this column piece.

5, pivot device according to claim 4 is characterized in that: this buffer element comprises at least one resilient pad.

6, pivot device according to claim 5 is characterized in that: this resilient pad is provided with a breach.

7, pivot device according to claim 5 is characterized in that: this resilient pad comprise arch shrapnel and waveform shell fragment at least one of them.

8, pivot device according to claim 4 is characterized in that: this buffer element comprises at least one dish-shaped shell fragment.

9, pivot device according to claim 8 is characterized in that: this dish shell fragment is provided with a breach.

10, pivot device according to claim 4 is characterized in that: this buffer element comprises helical spring.

11, pivot device according to claim 1 is characterized in that: this buffer element is a shell fragment.

12, pivot device according to claim 1 is characterized in that: be to intercouple by an anti-drop structure between this brake pad and this column piece.

13, pivot device according to claim 12 is characterized in that: this anti-drop structure comprises the waveform junction plane of being located at this brake pad one side and this column piece opposite side respectively.

14, pivot device according to claim 1 is characterized in that: also comprise one second torque spring, the two ends of this second torque spring are the carrier of this pivot member of bias voltage and pivot brackets and relative with first torque spring respectively.

15, pivot device according to claim 1 is characterized in that: comprise that also one is sheathed on the cover sheet of outside of the combination of this pivot brackets and friction positioning device.

16, pivot device according to claim 1 is characterized in that: this part end is established a groove, and a tying means is embedded in this groove.

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