TWI614445B - Lifting device - Google Patents

Abstract

A lifting device comprises a body, a gear, a torsion spring and an object. The base body has a shaft hole and one of a guiding groove and a guiding portion. The shaft hole has a plurality of first interference portions. The gear has a shaft. The rotating shaft is rotatably disposed in the shaft hole. The rotating shaft has a plurality of second interference portions disposed with respect to the first interference portion. The two ends of the torsion spring are fixed to the seat body and the gear. The article has a rack and one of the guiding slot and the guiding portion. The rack meshes with the gear. The torsion spring is in a compressed state when the object is in a first position relative to the seat. When the torsion spring is released from the compressed state, the torsion spring drives the gear to rotate, so that the object moves from the first position to the second position relative to the seat. During the rotation of the gear, the first interference portion and the second interference portion generate frictional interference with each other.

Description

Lifting device

The invention relates to a lifting device, in particular to a lifting device for moving an object relative to a seat body at a constant speed.

At present, some devices are equipped with a mechanism for driving the movement of the object relative to the seat to move the object relative to the seat to different positions according to the operation requirements of the user. See U.S. Patent No. 6,247,203 (hereinafter referred to as '203 patent), which utilizes a strip-shaped compression spring as a compression element to automatically eject an object out of the body. However, when the compression spring ejects the object into the base body, the speed of the ejection cannot be controlled, and the object that is ejected instantaneously sometimes scares the user or collides with the surrounding object and is damaged.

One of the objects of the present invention is to provide a lifting device that can move an object relative to a seat at a constant speed to solve the above problems.

According to an embodiment, the lifting device of the present invention comprises a body, a gear, a torsion spring and an article. The base body has a shaft hole and one of a guiding groove and a guiding portion. The shaft hole has a plurality of first interference portions. The gear has a shaft. The rotating shaft is rotatably disposed in the shaft hole. The rotating shaft has a plurality of second interference portions disposed with respect to the first interference portion. The two ends of the torsion spring are respectively fixed to the seat body and the gear. The article has a rack and one of the guiding slot and the guiding portion. The rack meshes with the gear. The guiding portion is movably disposed in the guiding groove. The torsion spring is in a compressed state when the object is in a first position relative to the seat. When the torsion spring is released from the compressed state, the torsion spring drives the gear to rotate, so that the object moves from the first position to the second position relative to the seat. During the rotation of the gear, the first interference portion and the second interference portion generate frictional interference with each other.

In summary, the present invention uses a torsion spring as a compression element, and the animal member moves relative to the seat by the cooperation of the gear and the rack. During the rotation of the gear, the first interference portion of the shaft hole of the seat body and the second interference portion of the shaft of the gear shaft generate frictional interference with each other to generate a damping effect to alleviate the elastic force generated when the torsion spring is released from the compressed state. . Thereby, the object can move at a constant speed relative to the seat.

The advantages and spirit of the present invention will be further understood from the following detailed description of the invention.

1 to 5, FIG. 1 is a perspective view of a lifting device 1 according to an embodiment of the present invention, FIG. 2 is an exploded view of the lifting device 1 in FIG. 1, and FIG. 3 is a first view. FIG. 4 is a front view of the lifting device 1 in FIG. 1 , wherein the object 16 is in the first position relative to the base 10 , and FIG. 5 is in FIG. 4 . The object 16 is moved relative to the base 10 from a first position to a front view of the second position.

As shown in FIGS. 1 to 5, the lifting device 1 includes a body 10, a gear 12, a torsion spring 14, and an object 16. In this embodiment, the base 10 can be a display device, and the object 16 can be a camera, but is not limited thereto. The seat 10 and the object 16 can be designed differently depending on the application.

The seat body 10 has a shaft hole 100 and a guiding groove 102. The shaft hole 100 has a plurality of first interference portions 104. The gear 12 has a shaft 120. The rotating shaft 120 is rotatably disposed in the shaft hole 100. The rotating shaft 120 has a plurality of second interference portions 122 disposed with respect to the first interference portion 104 of the shaft hole 100. In this embodiment, the first interference portion 104 may be a groove, and the second interference portion 122 may be a bump. However, in another embodiment, the first interference portion 104 may be a bump, and the second interference portion 122 may be a groove. In other words, one of the first interference portion 104 and the second interference portion 122 may be a bump, and the other of the first interference portion 104 and the second interference portion 122 may be a groove. Preferably, the bumps and the grooves may be symmetric/equalized, and the number is the same, but not limited thereto. In another embodiment, the number of bumps may also be smaller than the number of grooves, and the bumps and grooves may be asymmetric/divided.

The two ends of the torsion spring 14 are respectively fixed to the base 10 and the gear 12. In this embodiment, the two ends of the torsion spring 14 can be respectively fixed to the fixing groove 106 of the seat body 10 and the fixing seat 124 of the gear 12, but not limited thereto. In another embodiment, the two ends of the torsion spring 14 may be respectively fixed to the base 10 and the gear 12 in other fixing manners or structures, depending on the actual application. The object 16 has a rack 160 and a guiding portion 162. The rack 160 is engaged with the gear 12, and the guiding portion 162 is disposed in the guiding groove 102 of the base 10 so as to be relatively movable.

In this embodiment, the base 10 further has a first fastener 108, and the object 16 further has a second fastener 164. When the object 16 is in the first position shown in FIG. 4 with respect to the base 10, the second fastening member 164 is engaged with the first fastening member 108. At this time, the object 16 cannot move relative to the base 10, so that the object 16 is stationary at the first position shown in FIG. In addition, when the object 16 is in the first position shown in FIG. 4 with respect to the base 10, the torsion spring 14 is in a compressed state.

In this embodiment, the first fastening component 108 and the second fastening component 164 can be the female fastening component and the male fastening component of the conventional door fastening structure. The components and the working principle of the conventional door fastening structure can be referred to the Chinese Republic patent. Announcement No. M339558, which will not be repeated here. Therefore, when the object 16 is pressed down, the second fastener 164 will be detached from the first fastener 108. When the second fastener 164 is disengaged from the first fastener 108, the torsion spring 14 is released from the compressed state. When the torsion spring 14 is released from the compressed state, the torsion spring 14 will drive the gear 12 to rotate. By the cooperation of the gear 12 and the rack 160, the object 16 can be made relative to the base 10 from the first figure shown in FIG. The position moves to the second position shown in Figure 5. In addition, by the engagement of the guiding portion 162 and the guiding groove 102, the object 16 can be moved relative to the base 10 along the guiding groove 102 without causing skew.

During the rotation of the gear 12, the first interference portion 104 of the shaft hole 100 of the base 10 and the second interference portion 122 of the rotating shaft 120 of the gear 12 mutually generate frictional interference to generate a damping effect to alleviate the self-compression of the torsion spring 14 The spring force produced when the state is released. Thereby, the object 16 can be stably moved from the first position shown in FIG. 4 to the second position shown in FIG. 5 with respect to the base 10.

In this embodiment, the guiding slot 102 can have a limiting portion 110. When the object 16 is moved to the second position shown in FIG. 5, the limiting portion 110 restricts the movement of the guiding portion 162 such that the object 16 is stationary at the second position shown in FIG. In this embodiment, the limiting portion 110 can be at least one bump disposed in the guiding slot 102, but is not limited thereto. In another embodiment, the limiting portion 110 can also be a sealed end of the guiding groove 102.

In this embodiment, the lifting device 1 can further include a cover 18, wherein the cover 18 is fixed to the base 10. The cover 18 is used to fix the gear 12 to the base 10. As shown in FIGS. 2 and 3, the gear 12 can have a pivot hole 126, and the cover 18 can have a pivot shaft 180. When the cover 18 is fixed to the base 10 , the pivot shaft 180 of the cover 18 is inserted into the pivot hole 126 of the gear 12 , so that the gear 12 is fixed on the base 10 and rotatable relative to the base 10 .

Please refer to FIG. 6 and FIG. 7. FIG. 6 is a rear perspective view of the base 20 and the object 16 according to another embodiment of the present invention, wherein the object 16 is located at the first position relative to the base 20, and FIG. 6 is a rear perspective view of the object 16 in the figure moving relative to the base 20 from the first position to the second position.

The main difference between the base body 20 and the seat body 10 is that the guiding groove 102 of the base body 20 has a first limiting portion 112 and a second limiting portion 114, as shown in FIGS. 6 and 7. Show. The above-mentioned seat body 10 can be replaced by the seat body 20. When the object 16 is in the first position shown in FIG. 6 with respect to the base 20, the first limiting portion 112 restricts the movement of the guiding portion 162 such that the object 16 is stationary at the first position shown in FIG. Therefore, when the above-mentioned seat body 10 is replaced by the seat body 20, the first fastener 108 and the second fastener 164 described above can be omitted. When the object 16 is pulled up by an external force, so that the guiding portion 162 is disengaged from the first limiting portion 112, the above-mentioned torsion spring 14 is released from the compressed state. When the object 16 is moved to the second position shown in FIG. 7, the second limiting portion 114 restricts the movement of the guiding portion 162 such that the object 16 is stationary at the second position shown in FIG. In this embodiment, the second limiting portion 114 can be at least one bump disposed in the guiding slot 102, but is not limited thereto. In another embodiment, the second limiting portion 114 can also be a sealed end of the guiding slot 102.

Please refer to FIG. 8 to FIG. 11 , FIG. 8 is an exploded view of the lifting device 3 according to another embodiment of the present invention, and FIG. 9 is an exploded view of the lifting device 3 in FIG. 8 from another angle of view. 10 is a front view combination view of the lifting device 3 in FIG. 8, wherein the object 16 is in a first position relative to the base 10, and FIG. 11 is the object 16 in FIG. 10 moved from the first position to the base 10 to A front view combination of the second position.

The main difference between the lifting device 3 and the lifting device 1 described above is that the seat body 10 of the lifting device 3 has a guiding portion 162, and the object 16 of the lifting device 3 has a guiding groove 102, as shown in Figs. 8 to 11 Shown. When the object 16 is in the first position shown in FIG. 10 with respect to the base 10, the second fastening member 164 is engaged with the first fastening member 108. At this time, the object 16 cannot move relative to the base 10, so that the object 16 is stationary at the first position shown in FIG. When the object 16 is moved to the second position shown in FIG. 11, the guiding portion 162 restricts the movement of the limiting portion 110 such that the object 16 is stationary at the second position shown in FIG.

Therefore, according to the embodiments shown in Figures 2-5 and 8-11, the seat body of the present invention can selectively have one of the guiding groove and the guiding portion, and the object can be selectively guided. The other of the slot and the guide. It should be noted that the components of the same reference numerals as those shown in FIGS. 2 to 5 are substantially the same, and will not be described again.

Please refer to FIG. 12 to FIG. 15. FIG. 12 is an exploded view of the seat body 40 and the object member 46 according to another embodiment of the present invention, and FIG. 13 is a view showing the seat body 40 and the object member 46 in FIG. Explosion diagram of the viewing angle, Fig. 14 is a front view combination view of the seat body 40 and the object member 46 in Fig. 12, wherein the object member 46 is located at the first position with respect to the seat body 40, and Fig. 15 is the object member 46 of Fig. 14 as opposed to The front view of the seat 40 is moved from the first position to the second position.

The main body 40 is different from the above-mentioned seat body 10 in that the seat body 40 has a guiding portion 162, and the object member 46 has a guiding groove 102, wherein the guiding groove 102 has a first limiting portion 112 and a second limit. The bit portion 114 is as shown in Figs. 12 to 15. The above-mentioned seat body 10 and object 16 can be replaced by the seat body 40 and the object member 46. When the object 46 is in the first position shown in FIG. 14 with respect to the base 40, the guiding portion 162 restricts the movement of the first limiting portion 112 such that the object 46 is stationary at the first position shown in FIG. Therefore, when the above-mentioned seat body 10 is replaced by the seat body 40, the first fastener 108 and the second fastener 164 described above can be omitted. When the object 46 is pulled up by an external force, so that the first limiting portion 112 is disengaged from the guiding portion 162, the above-mentioned torsion spring 14 is released from the compressed state. When the object 46 is moved to the second position shown in Fig. 15, the guiding portion 162 restricts the movement of the second limiting portion 114, so that the object 46 is stationary at the second position shown in Fig. 15.

Please refer to FIG. 16 to FIG. 18, FIG. 16 is a perspective view of a lifting device 5 according to another embodiment of the present invention, and FIG. 17 is an exploded view of the lifting device 5 in FIG. 16, and FIG. 18 is the 16th. The explosion diagram of the lifting device 5 in the figure is viewed from another perspective.

The main difference between the lifting device 5 and the lifting device 1 described above is that the guiding groove 502 of the lifting device 5 and the rack 560 are curved and centered. Therefore, when the gear 12 rotates, the object 16 can move relative to the base 10 along the curved guiding groove 502 by the cooperation of the gear 12 and the curved rack 560. It should be noted that the components of the same reference numerals as those shown in FIGS. 1-5 in FIGS. 16-18 have substantially the same principle of operation, and are not described herein again.

In summary, the present invention uses a torsion spring as a compression element, and the animal member moves relative to the seat by the cooperation of the gear and the rack. During the rotation of the gear, the first interference portion of the shaft hole of the seat body and the second interference portion of the shaft of the gear shaft generate frictional interference with each other to generate a damping effect to alleviate the elastic force generated when the torsion spring is released from the compressed state. . Thereby, the object can move at a constant speed relative to the seat. The above are only the preferred embodiments of the present invention, and all changes and modifications made to the scope of the present invention should be within the scope of the present invention.

1, 3, 5‧‧‧ lifting device

10, 20, 40‧‧‧ body

12‧‧‧ Gears

14‧‧‧torsion spring

16, 46‧‧‧ objects

18‧‧‧ Cover

100‧‧‧ shaft hole

102, 502‧‧‧ guiding slot

104‧‧‧First Interference Department

106‧‧‧fixed slot

108‧‧‧First fastener

110‧‧‧Limited Department

112‧‧‧First Limitation Department

114‧‧‧Second Limitation

120‧‧‧ shaft

122‧‧‧Second Interference Department

124‧‧‧ Fixed seat

126‧‧‧ pivot hole

160, 560‧‧‧ racks

162‧‧‧Guide

164‧‧‧Second fasteners

180‧‧‧ pivot shaft

Fig. 1 is a perspective view of a lifting device according to an embodiment of the present invention. Fig. 2 is an exploded view of the lifting device of Fig. 1. Figure 3 is an exploded view of the lifting device of Figure 1 from another perspective. Figure 4 is a front elevational view of the lifting device of Figure 1 with the article in a first position relative to the body. Figure 5 is a front elevational view of the object of Figure 4 moving from the first position to the second position relative to the seat. Figure 6 is a rear perspective view of the seat and the article in accordance with another embodiment of the present invention, wherein the article is in a first position relative to the body. Figure 7 is a rear perspective view of the object in Figure 6 moving from the first position to the second position relative to the seat. Figure 8 is an exploded view of a lifting device in accordance with another embodiment of the present invention. Figure 9 is an exploded view of the lifting device of Figure 8 from another perspective. Figure 10 is a front perspective view of the lifting device of Figure 8, wherein the article is in a first position relative to the body. Figure 11 is a front view combination view of the object in Figure 10 moving from the first position to the second position relative to the seat. Figure 12 is an exploded view of a seat and an article in accordance with another embodiment of the present invention. Figure 13 is an exploded view of the seat and the object from another perspective in Figure 12. Fig. 14 is a front view combination view of the seat and the object in Fig. 12, wherein the object is located at the first position with respect to the seat. Figure 15 is a front view combination view of the object in Figure 14 moving from the first position to the second position relative to the seat. Figure 16 is a perspective view of a lifting device in accordance with another embodiment of the present invention. Figure 17 is an exploded view of the lifting device of Figure 16. Figure 18 is an exploded view of the lifting device of Figure 16 from another perspective.

1‧‧‧ lifting device

10‧‧‧ body

12‧‧‧ Gears

14‧‧‧torsion spring

16‧‧‧ objects

18‧‧‧ Cover

100‧‧‧ shaft hole

102‧‧‧ guiding slot

104‧‧‧First Interference Department

106‧‧‧fixed slot

108‧‧‧First fastener

110‧‧‧Limited Department

120‧‧‧ shaft

122‧‧‧Second Interference Department

124‧‧‧ Fixed seat

160‧‧‧ rack

162‧‧‧Guide

164‧‧‧Second fasteners

Claims (6)

A lifting device comprising: a body having a shaft hole and one of a guiding groove and a guiding portion, the shaft hole having a plurality of first interference portions; a gear having a rotating shaft, the rotating shaft being rotatably disposed In the shaft hole, the rotating shaft has a plurality of second interference portions disposed with respect to the first interference portions; a torsion spring, the two ends of the torsion spring being respectively fixed to the seat body and the gear; and an object, Having a rack and the other of the guiding groove and the guiding portion, the rack is engaged with the gear, the guiding portion is movably disposed in the guiding groove; wherein when the object is opposite to the seat When the body is in a first position, the torsion spring is in a compressed state; when the torsion spring is released from the compressed state, the torsion spring drives the gear to rotate, so that the object moves relative to the seat from the first position to a second position; the first interference portion and the second interference portion mutually generate frictional interference during the rotation of the gear. The lifting device of claim 1, wherein the base body further has a first fastening component, the object further comprising a second fastening component, the second fastening component when the object is in the first position relative to the base body The piece is fastened to the first fastener; when the second fastener is disengaged from the first fastener, the torsion spring is released from the compressed state. The lifting device of claim 2, wherein the guiding groove has a limiting portion, and when the object moves to the second position, one of the limiting portion and the guiding portion restricts movement of the other one . The lifting device of claim 1, wherein the guiding slot has a first limiting portion and a second limiting portion, the first limiting portion when the object is in the first position relative to the housing And one of the guiding portions restricts movement of the other one; when the guiding portion and one of the first limiting portions are separated from the other of the first limiting portions, the torsion spring is released from the compressed state; when the object moves to In the second position, one of the second limiting portion and the guiding portion limits movement of the other of the guiding portions. The lifting device of claim 1, wherein the guiding groove and the rack are curved and centered. The lifting device of claim 1, wherein one of the first interference portion and the second interference portion is a bump, and the other of the first interference portion and the second interference portion is a groove.