TWM639031U - telescopic device - Google Patents

Abstract

A telescoping device includes a shell group unit, a rotating unit, and a telescoping unit. One side of the shell unit is formed with a protruding tooth set. The rotating unit is arranged in the housing unit, and one end of the rotation unit is formed with a latching tooth set that engages with the protruding tooth set. The locking tooth set and the protruding tooth set cooperate to allow the rotating unit to rotate relative to the casing unit in a first direction, and cooperate to prevent the rotating unit from rotating in a second direction opposite to the first direction. A part of the telescopic unit is assembled and wound on the rotating unit, and the other part protrudes out of the shell unit and can be pulled, thereby extending the protruding length of the shell unit and driving the rotating unit along the first Turn to turn. The present invention can solve the problem that the telescopic unit is accidentally rotated and retracted.

Description

telescopic device

The present invention relates to a red velvet column used to indicate that people are prohibited from passing through or used to guide people to move, in particular to a telescoping device.

Referring to Fig. 1, 2, a kind of existing red velvet column comprises a base device 11, and a telescopic device 12 installed on the base device 11.

The retractable device 12 includes a shell unit 121 inserted on the top of the base device 11, a rotating unit 122 that is rotatably arranged in the shell unit 121 relative to the shell unit 121, and a rotating unit 122 wound around the shell unit 121. A telescopic unit 123 inserted on the unit 122 and inserted into the shell unit 121 , and an elastic unit 124 assembled between the rotating unit 122 and the shell unit 121 .

When the telescopic unit 123 is pulled out by the user as shown in FIG. 1 , it will drive the rotation unit 122 to rotate, and pull the elastic unit 124 to deform the elastic unit 124 and store elastic force. When the user releases the telescopic unit 123 , the elastic unit 124 releases the elastic force and drives the rotating unit 122 to rotate, and then the extension part of the telescopic unit 123 protruding from the shell unit 121 is rolled back onto the rotating unit 122 again.

Although the telescopic unit 123 of this telescopic device 12 can be rotated and retracted conveniently and automatically, since the telescopic device 12 itself does not maintain the telescopic unit 123 protrudes from the design of the protruding length of the shell group unit 121, so the telescopic unit 123 of this kind of telescopic device 12 will be turned and retracted as soon as the user lets go. In this way, when the user accidentally releases his hand, he may be hit by the telescopic unit 123 that is turned and retracted instantly, so it is not necessary to be careless.

The object of the present invention is to provide a telescoping device capable of improving at least one shortcoming of the prior art.

The telescopic device includes a shell unit, a rotating unit, and a telescopic unit.

One side of the shell unit is formed with a protruding tooth set. The rotating unit is rotatably arranged in the casing unit relative to the casing unit, and one end of the rotation unit is formed with a latching tooth group that engages with the protruding tooth group. The locking tooth set and the protruding tooth set cooperate to allow the rotating unit to rotate in a first direction relative to the housing unit, and the locking tooth set and the protruding tooth set can cooperate to prevent the rotating unit from rotating in a direction opposite to the first direction. A second steering turn for steering. A part of the telescopic unit is assembled and wound on the rotating unit, and the other part protrudes out of the shell unit and can be pulled, thereby extending the protruding length of the shell unit and driving the rotating unit along the first Turn to turn.

The effect of the new model is that the locking tooth set and the protruding tooth set can cooperate to limit the rotation unit to be pulled out only along the first direction of rotation, so that the telescopic unit will not be accidentally rotated and retracted for use. problem of the reader.

2: red velvet column

21: Base device

3: Shell group unit

31: shell

32: cover body

33: top shell

331: the first seam

332: Second seam

34: Bottom shell

35: Assembly Department

36: Tooth group

361: Tooth structure

362: straight protruding tooth surface

363: oblique tooth surface

37: cover hole

4: Turning unit

41: Shaft

42: Ring

43: top shaft

44: Bottom shaft

45: Central axis

46:Catch tooth group

461:Catch tooth structure

462: straight card tooth surface

463: oblique tooth surface

47: Assembly seam

5: Elastic unit

6: telescopic unit

61: Telescopic piece

62: Card arrival

63: Operating parts

7: Switch unit

71: Elastic parts

72: push piece

721: column shaft

722: head block department

D1: axial direction

D2: radial direction

T1: first turn

T2: second turn

Other features and functions of the present invention will be clearly presented in the implementation manner with reference to the drawings, wherein: Fig. 1 is an incomplete perspective view illustrating an existing red velvet column; Fig. 2 is an incompletely decomposed three-dimensional decomposition Figure, illustrates an existing telescoping device of this red velvet column; Fig. 3 is an incomplete perspective view, illustrates that an embodiment of the new telescoping device is used with a base device of a red velvet column; Fig. 4 is an incomplete Fig. 5 is a combined sectional view illustrating that a rotating unit of this embodiment is in a first state; Fig. 6 is an exploded sectional view, the cut position deviates from a cover hole of the cover body, The structures of a protruding tooth set of a cover body and a locking tooth set of the rotating unit of the embodiment are illustrated; and FIG. 7 is a combined sectional view illustrating that the rotating unit of the embodiment is in a second state.

In the following description, similar or identical elements will be denoted by the same reference numerals.

Referring to Fig. 3, 4, 5, an embodiment of the present invention is suitable for being arranged on a base device 21 of a red velvet column 2 as shown in Fig. 3, and includes a A shell unit 3 placed on the base device 21, a rotating unit 4 arranged in the shell unit 3 rotatably along a first direction T1, a rotating unit assembled between the shell unit 3 and the rotating unit 4 elastic units 5 , a telescopic unit 6 assembled on the rotating unit 4 and partially protruding from the shell unit 3 , and a switching unit 7 installed on the shell unit 3 .

Referring to FIGS. 4 , 5 and 6 , the housing unit 3 includes a housing 31 and a cover 32 locked on the top of the housing 31 .

The casing 31 includes a top shell part 33 that is cylindrical and accommodates the rotating unit 4 , the elastic unit 5 and the telescopic unit 6 , and a cylindrical top shell part 33 extending downward from the bottom of the top shell part 33 . The bottom shell part 34 and a plurality of assembly parts 35 protrude radially outward from the outer peripheral surface of the top shell part 33 .

The top shell portion 33 is cylindrical as mentioned above, and defines an axial direction D1 and a radial direction D2. One side of the top shell portion 33 is formed with a first slot 331 for inserting the telescopic unit 6 , and the other side is formed with a second slot 332 for inserting the elastic unit 5 . The radial width of the bottom shell part 34 is smaller than that of the top shell part 33 . The assembling parts 35 are used for detachable assembly of the telescopic unit 6 of other telescopic devices similar to the present embodiment.

The side of the cover 32 facing the housing 31 is formed with an annular protruding tooth set 36 and a cover hole 37 penetrating up and down and surrounded by the protruding tooth set 36 .

The tooth set 36 is located on the top side of the shell unit 3, and includes several Cooperate with the protruding tooth structure 361 arranged in a ring.

Each protruding tooth structure 361 includes a straight protruding tooth surface 362 extending in the axial direction, and an oblique protruding tooth surface 363 extending obliquely. Specifically, a second turning T2 opposite to the first turning T1 is defined, and each obliquely protruding tooth surface 363 follows the second turning direction from one end of the straight protruding tooth surface 362 close to the rotating unit 4 T2 extends obliquely away from the rotation unit 4 .

The rotating unit 4 is located in the housing 31, and includes a rotating shaft 41 whose top abuts against the protruding tooth set 36 of the cover 32 and whose bottom is inserted into the bottom shell portion 34 of the housing 31, and two An annular ring 42 is spaced vertically from each other and extends radially outward from the shaft 41 .

The rotating shaft 41 includes a top shaft portion 43 higher than the ring member 42 positioned above, a bottom shaft portion 44 spaced below the top shaft portion 43 and inserted in the bottom case portion 34, and a bottom shaft portion 44 positioned at The middle shaft portion 45 between the top shaft portion 43 and the bottom shaft portion 44 is up and down.

The top shaft portion 43 is formed with a latching tooth set 46 that engages the protruding tooth set 36 of the cover body 32 , and an assembling slot 47 extending through the radial direction.

The locking tooth set 46 includes several locking tooth structures 461 . Each locking tooth structure 461 includes a straight locking tooth surface 462 extending in the axial direction and an oblique locking tooth surface 463 . Each of the oblique locking tooth surfaces 463 is opposite to one end of the cover body 32 of the shell unit 3 from the respective one of the straight locking tooth surfaces 462, and is inclined along the second turning direction T2 toward the direction of the cover body 32. Diagonal extension.

The straight locking tooth surfaces 462 can respectively engage the straight tooth surfaces 362 of the protruding tooth set 36 , so as to cooperate to prevent the rotating unit 4 from rotating relative to the casing unit 3 along the second turning direction T2 . The oblique locking tooth surfaces 463 can cooperate with the oblique protruding tooth surfaces 363 of the protruding tooth set 36 to allow the rotating unit 4 to rotate relative to the housing unit 3 along the first direction T1 as mentioned above.

The central axis portion 45 is located in the top shell portion 33 of the casing 31 and is used for the telescopic unit 6 to be assembled and wound. Since the structure of the central axis portion 45 for the telescopic unit 6 to engage with is common knowledge, the description is omitted here.

The upper ring 42 is located between the top shaft portion 43 and the middle shaft portion 45 to support the elastic unit 5 and prevent the elastic unit 5 from drooping and interfering with the expansion and contraction of the telescopic unit 6 . The lower ring 42 is located between the bottom shaft 44 and the middle shaft 45 , and can cooperate with the upper ring 42 to limit the telescopic unit 6 to the middle shaft 45 .

The elastic unit 5 is a coil spring disposed on the ring 42 and supported by the ring 42 . One end of the elastic unit 5 located on the inner side in the radial direction D2 is assembled and inserted in the assembly slot 47 of the top shaft portion 43, and the other end located on the outer side in the radial direction D2 is assembled and inserted. It is disposed in the second slot 332 of the top case portion 33 of the housing 31 .

The telescopic unit 6 includes a telescopic part 61, and is arranged on the telescopic part 61 is a locking member 62 and an operating member 63 at two opposite ends.

In this embodiment, the telescopic member 61 is a piece of red velvet cloth, a part of which is wound on the central axis portion 45 of the rotating shaft 41 and located between the upper and lower parts of the ring members 42, and the other part is inserted in the housing 31 In the first slot 331 of the top case part 33 (refer to FIG. 3 for illustration).

The engaging member 62 is engaged with the central shaft portion 45 of the rotating shaft 41 so that the telescopic member 61 and the rotating shaft 41 move in unison. The operating part 63 is located outside the top shell part 33 of the housing 31 (shown in FIG. The slit 331 is pulled out to extend the extension length of the telescopic member 61 protruding from the top shell portion 33 .

The switching unit 7 includes an elastic member 71 disposed in the bottom shell portion 34 of the housing 31 , and a resisting member 72 inserted in the cover hole 37 of the cover body 32 .

The elastic member 71 is braced between the bottom shell portion 34 and the bottom shaft portion 44 of the shaft 41 to provide an elastic force to push the shaft 41 toward the cover 32 along the axial direction D1, so that the shaft 41 The locking tooth set 46 of the rotating shaft 41 is engaged with the protruding tooth set 36 of the cover 32 .

The push piece 72 includes a shaft part 721 inserted in the cover hole 37 and partly protruding upwards from the cover body 32 (see Fig. 5 ), and a bottom end connected to the shaft part 721 and The head block portion 722 of the locking tooth set 46 abuts against the rotating shaft 41 .

Referring to Figures 5, 6, and 7, the shaft portion 721 of the thrust member 72 protrudes The cover 32 of the housing unit 3 can be pressed by the user to drive the rotating unit 4 to switch between a first state as shown in FIG. 5 and a second state as shown in FIG. 7 .

In the first state, the locking tooth set 46 is engaged with the protruding tooth set 36 . When the user operates the operating member 63 to pull out the telescopic member 61 from the top shell portion 33 of the housing 31, the oblique protruding tooth surfaces 363 and the oblique locking tooth surfaces 463 can cooperate to allow the telescopic The member 61 drives the rotating shaft 41 to rotate along the first turning direction T1 through the engaging member 62, so that the protruding length of the telescopic member 61 protruding from the top shell portion 33 is extended and increased, and the elastic unit 5 is pulled to deform. The elastic unit 5 stores the elastic force driving the rotating shaft 41 to rotate along the second turning direction T2.

When the user stretches the telescopic member 61 to the required length and releases his hand, at this time, under the cooperation of the straight protruding tooth surfaces 362 and the straight locking tooth surfaces 462, the shaft 41 will be covered by the cover. The body 32 is limited and cannot rotate along the second direction T2, so even if the elastic unit 5 stores elastic force that can drive the rotating shaft 41 to rotate along the second direction T2, the rotating shaft 41 will not rotate. Similarly, even if the user accidentally releases the hand, the rotating shaft 41 in the first state will not rotate, so this embodiment has the effect of maintaining the extension length of the telescopic member 61 after being elongated. It also has the effect that the telescopic unit 6 will not be wounded by the telescopic unit 6 because of the instantaneous automatic rotation when the user accidentally lets go.

When the red velvet column 2 is used up and the telescopic member 61 of this embodiment needs to be retracted into the housing 31 , the pushing member 72 of the switching unit 7 can be pressed. Hold Pressing the shaft portion 721 of the resisting member 72 can move the resisting member 72 downward, push the rotating shaft 41 downward, and simultaneously drive the rotating shaft 41 to compress the elastic member of the switching unit 7 downward. 71, and make the rotating shaft 41 unit switch to the second state.

In the second state, the locking tooth set 46 is spaced apart from the protruding tooth set 36 and is no longer engaged. At this time, since the elastic unit 5 is no longer restricted by the locking tooth set 46 and the protruding tooth set 36, the elastic unit 5 that stores the elastic force that can drive the rotating shaft 41 to rotate along the second turning T2 can be released. The elastic force drives the rotating shaft 41 to rotate along the second turning direction T2, and the telescoping member 61 is rolled back onto the rotating shaft 41 again.

When the telescopic member 61 has been completely retracted onto the rotating shaft 41, the user only needs to let go of the hand, and the elastic member 71 of the switching unit 7 pressed by the rotating shaft 41 can release the elastic force and push the rotating shaft 41 upward. Pushing, the locking tooth set 46 of the rotating shaft 41 engages with the protruding tooth set 36 of the cover body 32 again, and the rotating unit 4 returns to the first state.

To sum up, the effect of the new telescopic device is that: in the first state, the protruding tooth set 36 and the locking tooth set 46 can cooperate when the telescopic unit 6 is pulled out from the shell unit 3 , Only the rotation unit 4 is allowed to rotate along the first direction T1, and in the second state, the elastic unit 5 can drive the rotation unit 4 to rotate along the second direction T2, so that when the user pulls out the When the telescopic unit 6 is of sufficient length or accidentally let go, the new model has the effect of maintaining the extended length and preventing accidental rewinding. When the pushing member 72 of the switching unit 7 is pressed, the telescopic member 61 can be automatically activated. Roll back the effect on this rotating shaft 41.

The above is only an embodiment of the present invention, and cannot limit the patent scope of the present invention with this, and the simple equivalent changes and modifications according to the scope of the patent application of the present invention and the patent specification should also be included in the present invention. covered by the patent application.

3: Shell group unit

31: shell

32: cover body

33: top shell

331: the first seam

332: Second seam

34: Bottom shell

35: Assembly Department

36: Tooth group

361: Tooth structure

362: straight protruding tooth surface

363: oblique tooth surface

37: cover hole

4: Turning unit

41: Shaft

42: Ring

43: top shaft

44: Bottom shaft

45: Central axis

46:Catch tooth group

461:Catch tooth structure

462: straight card tooth surface

463: oblique tooth surface

47: Assembly seam

5: Elastic unit

6: telescopic unit

61: Telescopic piece

62: Card arrival

63: Operating parts

7: Switch unit

71: Elastic parts

72: push piece

721: column shaft

722: head block department

D1: axial direction

D2: radial direction

T1: first turn

T2: second turn

Claims (8)

A telescopic device, comprising: a shell unit, one side of the shell unit is formed with a protruding tooth set; a rotating unit is arranged in the shell unit so as to be rotatable relative to the shell unit, and one of the ends A locking tooth set is formed to clamp the protruding tooth set, and the locking tooth set cooperates with the protruding tooth set to allow the rotation unit to rotate relative to the housing unit along a first turning direction, and the locking tooth set and the protruding tooth The set can cooperate to prevent the rotation unit from rotating along a second rotation opposite to the first rotation; and a telescopic unit, a part of which is assembled and wound on the rotation unit, and another part protrudes out of the shell group unit and can be pulled , and then extend the protruding length of the shell unit, and drive the rotating unit to rotate along the first rotation. The telescopic device as described in claim 1 further comprises an elastic unit assembled between the shell group unit and the rotating unit, and a switching unit, the switching unit includes an elastic unit arranged at the other end of the rotating unit and the shell An elastic piece between the group units, and a push piece inserted in the protruding tooth set and abutting against the locking tooth set, the push piece protrudes out of the shell set unit and can be pressed and operated, and drives the rotation The unit is switched between a first state and a second state. In the first state, the locking tooth set engages the protruding tooth set, and the rotating unit can only rotate along the first direction of rotation. In the second state, the The latching tooth set does not engage the protruding tooth set, but allows the elastic unit to drive the rotating unit to rotate along the second direction. The telescopic device as described in claim 2, wherein the shell unit includes a casing, and a cover provided on the casing, and the casing includes a housing containing the rotating unit, the telescopic unit and the The top shell part of the elastic unit, and a bottom shell part extending downward from the top shell part, the bottom shell part is provided for the elastic part of the switching unit, and the protruding tooth set is formed on the cover body. The telescopic device according to claim 3, wherein the rotating unit includes a rotating shaft abutted between the protruding tooth set of the cover body and the elastic member of the switching unit, and the rotating shaft includes a locking tooth set formed with a top shaft part of the casing, a bottom shaft part inserted in the bottom casing part of the housing and abutting against the elastic member, and a bottom shaft part located in the top casing part of the casing and used for the assembly and winding of the telescopic unit Axis. The telescopic device according to claim 4, wherein, the rotating unit further includes a circular ring extending radially outward from the rotating shaft, the ring is located between the top shaft part and the middle shaft part, and the elastic unit It is a volute spring arranged on the ring, one end is assembled with the top shaft part, and the other end is assembled with the top shell part of the housing. The telescoping device according to claim 5, wherein the rotating unit further includes another annular ring extending radially outward from the rotating shaft and located at the bottom shaft part and the middle shaft part. The telescopic device according to claim 4, wherein the telescopic unit includes a telescopic element, and a locking element and an operating element arranged at two opposite ends of the telescopic element, and the telescopic element is wound around the central axis of the rotating shaft On the top, the clamping part is clamped on the middle shaft part of the rotating shaft so that the telescopic part is connected with the rotating shaft The operating part is located outside the housing and can be operated to pull the telescopic part out from the central axis through the top shell of the housing. The telescopic device according to any one of claims 1 to 7, wherein the set of protruding teeth comprises several protruding tooth structures, each of which comprises a straight protruding tooth surface extending along an axial direction, and an oblique protruding tooth surface extending obliquely from the end of the straight protruding tooth surface close to the rotating unit along the second turning direction away from the rotating unit, the latching tooth set includes several latching tooth structures, each of the latching teeth The tooth structure includes a straight locking tooth surface extending along the axial direction, and an oblique locking tooth surface obliquely extending from the straight locking tooth surface opposite to the end of the shell unit along the second turning direction to the shell unit.

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