WO2011029380A1

WO2011029380A1 - Pulling type lift mechanism

Info

Publication number: WO2011029380A1
Application number: PCT/CN2010/076682
Authority: WO
Inventors: 周华松; 申利宾; 李仁忠; 陈添育
Original assignee: 厦门松霖科技有限公司
Priority date: 2009-09-08
Filing date: 2010-09-07
Publication date: 2011-03-17

Abstract

A pulling type lift mechanism comprises a fixing member (100, 1), a self-locking mechanism (200) and a pulling rope (300). The self-locking mechanism (300) comprises an upper and a lower wedged blocks (220, 210) which can move up and down and be arranged in the fixing member (100, 1). The upper and lower wedged blocks (220, 210) can match with each other and move opposite each other without separation. One end of the pulling rope (300) is connected with the top part of the upper wedged block (220), and the other end is connected with the bottom part of the lower wedged block (210). Under the gravity of the self-locking mechanism, the upper and lower wedged blocks are longitudinally closely moved and transversely expanded outward to resist against the internal wall of the fixing member so as to realize self-locking. Under the pulling force of the pulling rope, the upper and lower wedged blocks are longitudinally moved away from each other so as to realize self-unlocking, and therefore the height of a shower head can be adjusted by pulling the pulling rope up and down.

Description

Pull-up mechanism

Technical field

The invention relates to a lifting mechanism, in particular to a pulling lifting mechanism.

Background technique

The prior art shower lifting mechanism, such as the Chinese patent application number CN200520115761.8, is a utility model named "A Lifting Mechanism for a Shower Head", and the upper sliding or sliding hoop tight cover causes the lifting sleeve to be pressed or released due to The lifting sleeve is sleeved on an elastic sleeve, and the elastic sleeve is sleeved on a rigid tube, and the elastic force can lock the rigid tube, thereby realizing the height adjustment and locking of the shower head. However, although the shower lifting mechanism can achieve height adjustment and locking, the elastic sleeve tends to lose elasticity over time and frequently, which affects the service life of the shower; and, only the operation of the hoop cap at the same height as the shower head can be achieved. The height adjustment is realized, and when the shower head is at a higher or lower position, the hoop cap is not easily touched, which is inconvenient for the use of an elderly person, a child or a disabled person.

Summary of the invention

The present invention provides a pull type lifting structure that solves the deficiencies of the background art.

The technical solution adopted by the present invention to solve the technical problem thereof:

A pull type lifting mechanism, which comprises:

a fixing member;

a self-locking mechanism comprising upper and lower wedge-shaped blocks which are arranged to move up and down within the fixing member, which cooperate and can move relative to each other without being separated; and

a pull cord having one end attached to the top of the upper wedge block and the other end connected to the bottom of the lower wedge block;

Wherein, under the action of the gravity of the self-locking mechanism, the upper and lower wedge-shaped blocks move longitudinally and laterally outwardly to abut against the inner wall of the fixing member to realize self-locking, and the upper and lower wedge-shaped blocks are longitudinally separated by the pulling force of the pulling rope. Move to achieve self-lock release.

In a preferred embodiment, the fixing member is a fixed tube, and the fixing tube defines an axial cutting groove extending through the inner and outer portions; the upper wedge block is fixedly connected with a supporting portion passing through the fixing tube and located outside the fixing tube. A connecting seat passing through the slot is fixed between the upper wedge block and the supporting portion; the top mask of the lower wedge block has a limiting portion capable of defining a maximum relative moving distance between the upper and lower wedge blocks.

In a preferred embodiment, a pull ring is disposed in the drawstring.

In a preferred embodiment, a bent pipe is fixed to both ends of the fixed pipe, and the cable passes through the curved pipe.

In a preferred embodiment, the lower wedge block has a first outer mating surface corresponding to the inner wall of the fixed tube and a first inner mating surface corresponding to the upper wedge block, and the first outer mating surface is embedded. There is a friction block protruding from the first outer mating surface.

In a preferred embodiment, the first inner mating surface includes two parallel faces and an upwardly facing lower wedge face disposed between the two parallel faces.

In a preferred embodiment, the upper wedge block has a second outer mating surface corresponding to the inner wall of the fixed tube and a second inner mating surface corresponding to the lower wedge block, the second inner mating surface comprising two parallel And a downward facing upper wedge surface disposed between the two parallel faces, the upper wedge face and the lower wedge face being parallel and adapted.

In a preferred embodiment, the top of the upper wedge block is convexly provided with a connecting post; the limiting portion has a hanging section fixed on the top of the lower wedge block, and the hanging section has a width larger than the connecting column and smaller than the upper wedge block. a through slot; the connecting post passes through the through slot.

In a preferred embodiment, the pull-up lifting structure further includes:

a socket unit fixedly supported on the support portion; and

A socket that is disposed in the outlet unit and that can be plugged into the shower.

In a preferred embodiment, the socket unit defines a through hole for slidingly fixing the fixed tube, and a sleeve is disposed between the fixed tube and the through hole.

In a preferred embodiment, the fixing member is a fixing plate, and the fixing plate is provided with a finite slot, and the upper and lower wedge blocks are vertically movable to be disposed in the limiting slot.

In a preferred embodiment, the fixing plate comprises a vertical plate and a horizontal plate, and the limiting groove is arranged on the vertical plate, and a pulley is arranged at each end of the head and the tail to form a first pulley block, and the vertical plate and the limiting groove a parallel block is provided with a second pulley block, and a third pulley block is horizontally disposed on the horizontal plate; the drawstring passes through the three sets of pulley blocks, and a weight is arranged between the second set of pulleys, and is disposed between the third pulley blocks Push and pull the handle.

In another preferred embodiment, the fixing plate is a vertical plate, and the limiting groove is vertically disposed at a middle portion of the vertical plate; the pulling rope head comprises a first pulling rope and a second pulling rope, and one end thereof is connected to the upper wedge block. The top end and the other end are connected to the bottom of the lower wedge block; and a weight is arranged on the first rope, and a push-pull handle is arranged on the second rope.

Compared with the background art, the technical solution has the following advantages:

Under the action of gravity of the self-locking mechanism, the upper and lower wedge-shaped blocks move longitudinally and laterally outwardly to abut against the inner wall of the fixed pipe to realize self-locking. Under the pulling force of the pulling rope, the upper and lower wedge-shaped blocks are longitudinally moved away from each other. The self-locking release is realized, so that it can be loose with the lock, so the following advantages are obtained: 1. No additional elastic components are required, the process is reduced, the material is saved, and the service life is correspondingly extended compared with the product using the elastic component; The lifting mechanism is provided with a pull cord and a self-locking mechanism, and the height of the shower can be adjusted by gently pulling the drawstring, which is convenient for the user, especially for the elderly or children or the disabled; 3. The pull cord has a pull ring for the disabled For use, the disabled can simply raise and lower the arm by pushing it into the pull ring and moving it up or down.

Since the fixed pipe is provided with all the slots, the upper wedge block is fixed with the supporting portion and the connecting seat, so that the supporting portion can be accurately lifted and lowered, and has a guiding function, and the supporting portion is exposed outside the fixed pipe to connect other items to be lifted and lowered.

Since the elbow or the pulley block is provided, the drawing rope has a guiding effect, and the weighting block can also be provided, which is more labor-saving.

Since the lower wedge block is embedded with a friction block, the self-locking force can be enhanced, and self-locking can be ensured.

Since the upper wedge surface and the lower wedge surface are parallel and matched, the longitudinal movement can be achieved to drive the lateral movement.

Since the limiting portion is provided, and the connecting post passes through the through groove, not only the maximum moving distance of the upper and lower wedge blocks can be ensured, but also the upper and lower wedge blocks can be connected together, and the drawstring can be connected to the upper wedge piece.

Since it is provided with a socket unit and a socket, it can be used for lifting showers.

DRAWINGS

The invention will now be further described with reference to the accompanying drawings and embodiments.

Fig. 1 is a front elevational view showing a first embodiment of the pull type lifting mechanism of the present invention.

2 is an exploded view of the self-locking mechanism and the socket unit in the first embodiment of the present invention.

Figure 3 is a cross-sectional view showing the self-locking mechanism in a relaxed state in the first embodiment of the present invention.

Figure 4 is a cross-sectional view showing the state in which the self-locking mechanism is locked in the first embodiment of the present invention.

Fig. 5 is an exploded view of the other components of the pull type lifting mechanism provided in the first embodiment of the present invention except the self-locking mechanism.

FIG. 6 is a schematic structural view of Embodiment 2 of the present invention.

FIG. 7 is a schematic perspective view of a third embodiment of the present invention.

FIG. 8 is a schematic rear view showing the structure of Embodiment 3 of the present invention.

FIG. 9 is a schematic structural view of Embodiment 4 of the present invention.

FIG. 10 is a schematic rear view showing the structure of Embodiment 4 of the present invention.

Description of the reference signs:

Fixed tube-100; slotted-110; self-locking mechanism-200; lower wedge-shaped block-210; limiting portion-211; lower wedge-shaped surface-212; through-groove-213; friction block-214; upper wedge-shaped block-220; Supporting portion -221; upper wedge surface -222; connecting column -223; drawstring -300; pull ring -310; upper bend tube -410; lower bend tube -420; socket unit -500; socket cover -510; socket -520; socket lower cover - 530; fixed seat - 540; sleeve - 550; through hole - 560; buckle - 610, 620; wall seat - 710, 720; buckle cover - 810, 820; outlet buckle - 910, 920. Fixing plate-1, limiting slot-11, pulley-2, crank handle-3, handle-4, counterweight-5

detailed description

Embodiment 1, as shown in FIG. 1 and FIG. 5, the pull type lifting mechanism of the present invention includes a fixed tube 100, a self-locking mechanism 200, a drawstring 300, an

elbow

410, 420, a socket unit 500, and the like.

The fixed pipe 100 defines an axial slot 110 extending through the inner and outer portions. Both ends of the fixed pipe 100 are respectively assembled with the buckle covers 810 and 820 through a set of

wall seats

710 and 720 to be fixed to the wall. The two ends of the head and the tail are respectively fixed with the

bent pipes

410 and 420 through the buckles 610 and 620.

As shown in FIG. 2, the structural relationship between the self-locking mechanism 200 of the pull-up lifting mechanism and the socket unit 500 is illustrated. The self-locking mechanism 200 includes upper and lower wedge blocks 220, 210 that are vertically movable within the fixed tube 100.

The lower wedge block 210 has a first outer mating surface corresponding to the inner wall of the fixed tube 100 and a first inner mating surface corresponding to the upper wedge block 220. The first outer mating surface is embedded with a protruding portion. An outer mating face friction block 214, the first inner mating face comprising two parallel faces and an upwardly facing lower wedge face 212 disposed between the two parallel faces. In the embodiment, the top surface of the lower wedge block 210 has a limiting portion 211, which includes a hanging portion fixed on the top of the first inner mating surface of the lower wedge block 210. The floating portion defines a through slot 213. .

The upper wedge block 220 is connected with a supporting portion 221 and a connecting seat fixed between the upper wedge block 220 and the supporting portion 221 . In this embodiment, the connecting seat matches and connects the slot 110 of the fixed tube 100 such that the upper wedge block 220 is located within the fixed tube 100, the connecting seat matches the connecting slot 110, and the supporting portion 221 is located in the fixed tube 100. In addition, a lifting object such as the socket unit of the embodiment is connected. In this embodiment, the support portion 221, the connecting seat and the upper wedge block are fixedly integrally formed. However, it is not limited thereto, and other structures can also realize the lifting mechanism, as long as the supporting portion outside the fixed pipe can be fixed together with the upper wedge block in the pipe to form a linkage.

The upper wedge block 220 has a second outer mating surface corresponding to the inner wall of the fixed tube 100 and a second inner mating surface corresponding to the lower wedge block 210. The second inner mating surface includes two parallel surfaces and a second inner mating surface. A downwardly facing upper wedge surface 222 between the two parallel faces, the upper wedge face 222 and the lower wedge face 212 are parallel and adapted. In this embodiment, a connecting post 223 is protruded from the top end of the upper wedge block 220 (the width of the through slot 213 is larger than the connecting post 223 and smaller than the upper wedge block 220), and the connecting post 223 passes through the connecting through slot 213. The through-connection can ensure that the connecting post 223 moves up and down relative to the through-groove 213, can prevent the upper wedge-shaped block 220 from moving out of the through-groove, can limit the maximum moving distance of the upper and lower wedge-shaped

blocks

220, 210, and can ensure that the upper and lower wedge-shaped

blocks

220, 210 are matched and Can move relative to each other without leaving.

The socket unit 500 is provided with a socket 520 capable of plugging a shower. In the embodiment, the socket unit 500 includes a socket upper cover 510, a socket lower cover 530, a fixing base 540 and a sleeve 550. The socket upper cover 510 and the socket lower cover 530 are fixed. The fixing base 540 is fixed. It is fixed between the socket upper cover 510 and the socket lower cover 530. The socket unit 500 defines a through hole 560 that can slide the fixed tube 100 . The sleeve 550 is interposed between the fixed tube 100 and the through hole 560 . The socket unit 500 is sleeved and fixed to the support portion 221 of the upper wedge block 220.

One end of the pull cord 300 passes through the outlet hole 910, the elbow 410, and the buckle 610 and extends into the fixed tube 100, and is connected to the top of the upper wedge block 220, and the other end passes through the outlet hole 920, the elbow 420, and the buckle 620. And extending into the fixed pipe 100, and then connected to the bottom of the lower wedge block 210. Moreover, a pull ring 310 is further disposed in the drawstring 300.

As shown in FIG. 3 and FIG. 4, they respectively show cross-sectional views of the self-locking mechanism in a relaxed state and a locked state.

When the self-locking mechanism 200 is not subjected to an external force or is subjected to a downward force (the weight of the socket unit, the socket, the shower, or other downward external force), since the friction block 214 is in close contact with the inner wall of the fixed tube 100, The lower wedge block 210 is held stationary by the action of the friction block 214, and the upper wedge block 220 slides downward under the influence of gravity. At this time, the upper and lower wedge blocks move relatively vertically in the longitudinal direction and rise laterally to the top. Fixing the inner wall of the pipe, and because the upper wedge block 220 gives the lower wedge block 210 a downward downward force, the oblique force decomposes a vertical force of a vertical inner wall, and the vertical force causes the frictional force to continuously increase. The lower wedge surfaces are in close contact with each other, and the self-locking mechanism is in a locked state; when the shower height needs to be changed, the pull ring 310 is pulled again to break the self-locking, and the upper and lower wedge blocks are relatively longitudinally separated under the pulling force of the pulling rope 300. Move to achieve self-lock release; when the shower is required to be upward, pull the pull ring 310 downward to drag the upper wedge block 220 upward, and the lower wedge block 210 is no longer subjected to the downward biasing force of the upper wedge block 220, and the friction is reduced. Small, making institutions Lock, driven by upward movement of the shower, shower highly elevated; Similarly, pull tab 310 is possible to reduce the height of the shower.

Embodiment 2, as shown in FIG. 6, the pull-type lifting mechanism of the second embodiment is different from that of the first embodiment in that the end of the end of the fixed pipe 100 is fixed with a

pulley

21, 22, respectively, and the head pulley 21 An upper pulley 23 is provided at a parallel position, and a crank handle 3 is provided at a position parallel to the tail pulley 22, and the pull cord passes through the three

pulleys

21, 22, 23 and the crank handle 3.

The fixed pipe 100 is fixed to the wall by the upper and

lower wall seats

710, 720, and the shower is inserted into the socket unit 500. When the height of the shower is to be adjusted, the rocking handle 3 drives the cable 300 to move up and down, and the socket unit 500 moves up and down, and realizes self-locking under the action of the self-locking mechanism 200. The three pulleys 2 guide the movement of the drawstring 300 to reduce friction.

Embodiment 3, as shown in FIG. 7 and FIG. 8 , the fixing device of the present embodiment 3 differs from the embodiment 1 in that the fixing member is a fixing plate 1 , and the fixing plate 1 is opened with a limit groove 11 ,

The lower wedge blocks 210, 220 (not shown) are vertically movable in the limiting groove 11. The fixing plate 1 includes a vertical plate 12 and a horizontal plate 13. The limiting groove 11 is disposed on the vertical plate 12, and a pulley is disposed at each end of the head and the tail to form a first pulley block 24, and the vertical plate 12 and the limiting groove 11 The second pulley block 25 is disposed at a parallel position, and the third pulley block 26 is horizontally disposed on the horizontal plate 13; the drawstring passes through the three sets of pulley blocks 24, 25, 26 and is disposed between the two pulleys of the second set of pulleys 25. There is a weight 5, and a push-pull handle 4 is mounted between the two pulleys of the third pulley block 26.

When in use, the shower is inserted into the outlet unit 500. When the height of the shower is required to be adjusted, the push-pull handle 4 is pushed horizontally, and the three sets of pulley blocks 24, 25, 26 drive the pull cord 300 to move up and down, and the socket unit 500 moves up and down, and realizes self-locking under the action of the self-locking mechanism 200. The three sets of

pulleys

24, 25, 26 guide the movement of the drawstring 300 to reduce the friction; at the same time, due to the provision of the weight 5, the weight of the socket unit 500 and its accessories are counteracted during the movement, so that the lifting shower It is easier, and the push-pull handle 4 is horizontally set, which is more convenient for the user.

Embodiment 4, as shown in FIG. 9 and FIG. 10, the main difference between the pull type lifting mechanism of the fourth embodiment and the third embodiment is that the fixing plate 1 is a vertical plate 12, and the limiting groove 11 is vertically disposed on the vertical plate. The middle portion of the 12; the drawstring 300 includes a first pull cord 310 and a second pull cord 320, one end of which is connected to the top of the upper wedge block, and the other end is connected to the bottom of the lower wedge block; and the first drawstring is provided with a match Heavy block, with a push-pull handle on the second drawstring.

Industrial applicability

The utility model relates to a pull type lifting mechanism, which drives a top shower mounted on a lifting rod to move up and down by a flexible lifting device, and realizes self-locking. The utility model has the advantages of simple structure, convenient operation and use, and good industrial applicability.

Claims

A pull-type lifting mechanism characterized in that it comprises:

a fixing member;

a self-locking mechanism comprising upper and lower wedge-shaped blocks which are arranged to move up and down within the fixing member, which cooperate and can move relative to each other without being separated; and

a pull cord having one end attached to the top of the upper wedge block and the other end connected to the bottom of the lower wedge block;

Wherein, under the action of the gravity of the self-locking mechanism, the upper and lower wedge-shaped blocks move longitudinally and laterally outwardly to abut against the inner wall of the fixing member to realize self-locking, and the upper and lower wedge-shaped blocks are longitudinally separated by the pulling force of the pulling rope. Move to achieve self-lock release.
The pull-type lifting mechanism according to claim 1, wherein the fixing member is a fixed pipe, and defines an axial slit extending through the inner and outer portions; the upper wedge block is fixedly connected to the fixed pipe and located at the fixed pipe. a support portion outside the support block, and a connecting seat passing through the slot is fixed between the upper wedge block and the support portion; the top cover of the lower wedge block has a limit portion capable of defining a maximum relative moving distance between the upper and lower wedge blocks .
The pull type lifting mechanism according to claim 2, wherein a pull ring is disposed in the drawstring.
The pull type lifting mechanism according to claim 2, wherein a bent pipe is fixed to both ends of the fixed pipe, and the draw rope passes through the bent pipe.
The pull type lifting mechanism according to claim 2 or 4, wherein the lower wedge block has a first outer mating surface corresponding to the inner wall of the fixed tube and a first inner mating corresponding to the upper wedge block. A friction block protruding from the first outer mating surface is embedded in the first outer mating surface.
The pull-up lifting mechanism according to claim 5, wherein the first inner mating surface comprises two parallel faces and an upwardly facing lower wedge face disposed between the two parallel faces.
The pull type lifting mechanism according to claim 6, wherein the upper wedge block has a second outer mating surface corresponding to the inner wall of the fixed tube and a second inner mating surface corresponding to the lower wedge block. The second inner mating surface includes two parallel faces and a downwardly facing upper wedge face disposed between the two parallel faces, the upper wedge face and the lower wedge face being parallel and adapted.
The pull-type lifting mechanism according to claim 2, wherein a top end of the upper wedge block is convexly provided with a connecting post; the limiting portion has a hanging section fixed on the top of the lower wedge block, and the hanging section has a hanging section a through groove having a width greater than the connecting post and smaller than the upper wedge block; the connecting post passes through the through groove.
The pull-up lifting mechanism according to claim 2, further comprising:

a socket unit fixedly supported on the support portion; and

A socket that is disposed in the outlet unit and that can be plugged into the shower.
The pull-type lifting mechanism according to claim 9, wherein the socket unit defines a through hole capable of slidingly sleeved the fixed tube, and a sleeve is disposed between the fixed tube and the through hole.
The pull type lifting mechanism according to claim 2, wherein a fixed pulley is fixed at both ends of the fixed pipe, and an upper pulley is disposed at a position parallel to the head pulley, and is disposed at a position parallel to the tail pulley. There is a handle, and the drawstring passes through the three pulleys and the handle.
The pull-type lifting mechanism according to claim 1, wherein the fixing member is a fixing plate, and the fixing plate is provided with a finite slot, and the upper and lower wedge blocks are vertically movable to be disposed in the limiting slot.
The pull-type lifting mechanism according to claim 12, wherein the fixing plate comprises a vertical plate and a horizontal plate, the limiting groove is arranged on the vertical plate, and a pulley is arranged at each end of the head and the tail to form the first pulley block. a second pulley block is disposed at a position parallel to the limiting slot on the vertical plate, and a third pulley block is horizontally disposed on the horizontal plate; the pulling rope passes through the three sets of pulley blocks, and a weight is arranged between the second group of pulleys A push-pull handle is mounted between the third pulley block.
The pull type lifting mechanism according to claim 12, wherein the fixing plate is a vertical plate, and the limiting groove is vertically disposed at a middle portion of the vertical plate; the pulling head comprises a first pulling rope and a second pulling rope, wherein One end is connected to the top of the upper wedge block, and the other end is connected to the bottom of the lower wedge block; and a weight is arranged on the first rope, and a push-pull handle is arranged on the second rope.