CN201427850Y

CN201427850Y - Lifting mechanism

Info

Publication number: CN201427850Y
Application number: CN2009201554818U
Authority: CN
Inventors: 杨永祥; 黄光鹏
Original assignee: Kinpo Electronics Inc
Current assignee: Kinpo Electronics Inc
Priority date: 2009-05-06
Filing date: 2009-05-06
Publication date: 2010-03-24
Anticipated expiration: 2019-05-06

Abstract

A lifting mechanism capable of reducing the probability of generating noise comprises an outer shell, a rack, an inner shell and a positioning structure. The outer shell has a track. The rack is arranged in the track and extends along the extension direction of the track. The inner shell is slidably arranged on the track and has a retaining wall extending from the surface of the inner shell. The positioning structure is arranged between the retaining wall and the rack. The positioning structure comprises a main body, an elastic member and a roller. The main body is slidably arranged on the inner shell. One end of the elastic member is connected to the main body, and the other end of the elastic member is supported by the retaining wall. The roller is pivotally arranged on the main body and contacts the rack. The inner shell is positioned on the track by the engagement of the roller and the rack.

Description

Lifting mechanism

Technical field

The utility model relates to a kind of lifting mechanism, and particularly relevant for a kind of lifting mechanism that utilizes the tooth bar location.

Background technology

Being of wide application of lifting mechanism is general, and for example, it can be used for the foot rest of camera or projector.The user can adjust the length of foot rest by lifting mechanism, and camera or projector are positioned certain height.

Generally speaking, lifting mechanism can comprise shell with track and the inner casing that is slidedly arranged on track.When the user with inner casing during along slide to ad-hoc location, inner casing can be positioned track.In detail, track is configurable that tooth bar and inner casing are configurable a location structure, with engaging of tooth bar inner casing is positioned track by location structure.Between location structure and the inner casing configurable flexible, when the inner casing opposite shell was slided, the location structure that is sticked in tooth bar can be by the elastic deformation of elastic component and is successfully moved relative to tooth bar.Yet, when location structure when tooth bar moves, the friction between location structure and the tooth bar can produce noise to a certain degree, and causes user's puzzlement.

The utility model content

The utility model provides a kind of lifting mechanism, can reduce the probability that produces noise.

The utility model proposes a kind of lifting mechanism, comprise shell, tooth bar, inner casing and location structure.Shell has track.Tooth bar is disposed in the track and extends along the bearing of trend of track.Inner casing is slidedly arranged on track.Inner casing has barricade, extends from the surface of inner casing.Location structure is disposed between barricade and the tooth bar.Location structure comprises main body, elastic component and roller.Main body is slidedly arranged on inner casing.One end of elastic component is connected in main body, and the other end of elastic component is bearing on barricade.Roller is hubbed at main body and contacts with tooth bar.Inner casing is positioned track by roller with engaging of tooth bar.

In an embodiment of the present utility model, above-mentioned barricade is parallel to the bearing of trend of tooth bar in fact.

In an embodiment of the present utility model, above-mentioned inner casing has more the two side, extends from the surface of inner casing and defines chute, and wherein barricade is positioned at the end of chute away from tooth bar, and main body is slidedly arranged on chute.

In an embodiment of the present utility model, above-mentioned two side is parallel to each other in fact.

In an embodiment of the present utility model, above-mentioned barricade is in fact perpendicular to the two side.

In an embodiment of the present utility model, above-mentioned two side is in fact perpendicular to the bearing of trend of tooth bar.

In an embodiment of the present utility model, an end of the contiguous tooth bar of above-mentioned sidewall has spacing extension, forms constructive interference with main body.

In an embodiment of the present utility model, above-mentioned elastic component is a spring.

In an embodiment of the present utility model, above-mentioned main body has projection, and spring housing is located at projection.

Based on above-mentioned, lifting mechanism of the present utility model has the roller that is disposed at inner casing.When inner casing when opposite shell is slided in orbit, can move relative to tooth bar in the mode of rolling with the roller of tooth bar contact, and can reduce itself and tooth bar produce noise because of friction probability.

Description of drawings

For above-mentioned purpose of the present utility model, feature and advantage can be become apparent, below in conjunction with accompanying drawing the specific embodiment of the present utility model is elaborated, wherein:

Fig. 1 is the block diagram of the lifting mechanism of the utility model one embodiment.

Fig. 2 is the shell of Fig. 1 and the block diagram of tooth bar.

Fig. 3 is the inner casing of Fig. 1 and the block diagram of location structure.

Fig. 4 A and Fig. 4 B are the illustrative view of the lifting mechanism of Fig. 1.

Fig. 5 is applied to the scheme drawing of foot rest for the lifting mechanism of Fig. 1.

The main element nomenclature:

50: foot rest 60: object

100: lifting mechanism 110: shell

112: track 120: tooth bar

130: inner casing 132: barricade

134: surface 136: sidewall

136a: spacing extension 138: chute

140: location structure 142: main body

142a: projection 144: elastic component

146: roller D: bearing of trend

The specific embodiment

Fig. 1 is the block diagram of the lifting mechanism of the utility model one embodiment.Fig. 2 is the shell of Fig. 1 and the block diagram of tooth bar.Fig. 3 is the inner casing of Fig. 1 and the block diagram of location structure.Please refer to Fig. 1 to Fig. 3, the lifting mechanism 100 of present embodiment comprises shell 110, tooth bar 120, inner casing 130 and location structure 140.Shell 110 has track 112.Tooth bar 120 is disposed in the track 112 and extends along the bearing of trend of track 112.

Inner casing 130 is slidedly arranged on track 112 and has barricade 132.Barricade 132 extends from the surface 134 of inner casing 130.Location structure 140 is disposed between barricade 132 and the tooth bar 120.Location structure 140 comprises main body 142, elastic component 144 and roller 146.Main body 142 is slidedly arranged on inner casing 130.One end of elastic component 144 is connected in main body 142, and the other end of elastic component 144 is bearing on barricade 132.Roller 146 is hubbed at main body 142 and contacts with tooth bar 120.Inner casing 130 is positioned track 112 by roller 146 with engaging of tooth bar 120.

Fig. 4 A and Fig. 4 B are the illustrative view of the lifting mechanism of Fig. 1.State when Fig. 4 A illustrates and is sticked in tooth bar 120 for roller 146, wherein elastic component 144 by elastic force and with roller 146 tops to tooth bar 120, to keep engaging between roller 146 and the tooth bar 120.Fig. 4 B illustrate into the relative tooth bars 120 of roller 146 slide temporarily remove with tooth bar between the state that engages, wherein elastic component 144 produces elastic deformation because of being squeezed.

Fig. 5 is applied to the scheme drawing of foot rest for the lifting mechanism of Fig. 1.Please refer to Fig. 5, the length of user's adjustable horses 50 and object 60 is positioned certain height.In the present embodiment, object 60 for example is a camera.The slide relative of inner casing 130 and shell 110 can change the length of foot rest 50.Please refer to Fig. 1, when the user was adjusting the length of the foot rest 50 among Fig. 4, inner casing 130 can opposite shell 110 slide.Owing to can move relative to tooth bar 120 in the mode of rolling with the roller 146 of tooth bar 120 contacts, so can reduce the probability that produces noise because of friction.In addition, rub mutually and relatively move compared to the location structure and the tooth bar that have lifting mechanism now, the roller 146 of present embodiment and tooth bar 120 relatively move in the mode of rolling, and can make moving process more smooth and easy.

Please refer to Fig. 1, in detail, inner casing 130 has more two side 136.Sidewall 136 extends from the surface 134 of inner casing 130 and defines chute 138, and wherein barricade 132 is positioned at the end of chute 138 away from tooth bar 120, and main body 142 is slidedly arranged on chute 138.Location structure 140 is in the process of the two states conversion that Fig. 4 A and Fig. 4 B are illustrated, and main body 142 can slip chute 138 in.More specifically, in the present embodiment, barricade 132 is parallel to the bearing of trend D of tooth bar 120 in fact and in fact perpendicular to two side 136.Two side 136 is parallel to each other in fact and perpendicular to the bearing of trend D of tooth bar 120.

Please refer to Fig. 1, an end of sidewall 136 contiguous tooth bars 120 has spacing extension 136a.Spacing extension 136a is in order to form constructive interference with main body 142, to avoid rocking of main body 142.In addition, in the present embodiment, elastic component 144 is a spring, and can be by the mode of the projection 142a that is sheathed on main body 142 and be fixed.

In sum, lifting mechanism of the present utility model has the roller that is disposed at inner casing.When inner casing when opposite shell is slided in orbit, can move relative to tooth bar in the mode of rolling with the roller of tooth bar contact, and can reduce it and tooth bar produces the probability of noise because of friction, and the process that inner casing and shell are relatively moved is more smooth and easy.

Though the utility model discloses as above with preferred embodiment; right its is not in order to limit the utility model; any those skilled in the art; in not breaking away from spirit and scope of the present utility model; when doing a little modification and perfect, therefore protection domain of the present utility model is worked as with being as the criterion that claims were defined.

Claims

1. A lifting mechanism, characterized in that it comprises:

a shell with a track;

a rack configured in the track and extending along the extending direction of the track;

An inner shell is slidably arranged on the track, wherein the inner shell has a retaining wall extending from a surface of the inner shell;

A positioning structure is arranged between the retaining wall and the rack, and the positioning structure includes:

A main body is slidably arranged on the inner shell;

an elastic member, wherein one end of the elastic member is connected to the main body, and the other end of the elastic member bears against the retaining wall; and

A roller is pivotally arranged on the main body and contacts with the rack, wherein the inner shell is positioned on the track by engaging the roller with the rack.

2. The lifting mechanism according to claim 1, wherein the retaining wall is substantially parallel to the extending direction of the rack.

3. The lifting mechanism according to claim 1, wherein the inner shell further has two side walls extending from the surface of the inner shell to define a chute, wherein the retaining wall is located away from the chute One end of the rack, and the main body is slidably arranged in the slide groove.

4. The lifting mechanism according to claim 3, wherein the two side walls are substantially parallel to each other.

5. The lifting mechanism of claim 3, wherein the retaining wall is substantially perpendicular to the two side walls.

6. The lifting mechanism according to claim 3, wherein the two side walls are substantially perpendicular to the extending direction of the rack.

7. The lifting mechanism as claimed in claim 3, wherein each side wall has a limiting extension at an end adjacent to the rack, forming structural interference with the main body.

8. The lifting mechanism according to claim 1, wherein the elastic member is a spring.

9. The lifting mechanism according to claim 8, wherein the main body has a protruding post, and the spring is sheathed on the protruding post.