CN208354919U - A kind of transmission mechanism with braking function - Google Patents

Abstract

The utility model discloses a kind of transmission mechanisms with braking function, its drip irrigation device includes gear-box, gear-box includes the left box body and right case being bolted, shaft coupling in the gear-box equipped with both ends and gear-box rotation connection, one end of the shaft coupling is connected with first bevel gear, the other end of the shaft coupling is connected with damping sleeve, the shaft coupling can drive first bevel gear to rotate, helical spring is arranged with outside damping sleeve, one end of the helical spring is fixed with gear-box, second bevel gear is engaged with below the first bevel gear, screw rod is removably connected with below the second bevel gear, the screw rod and gear-box are rotatablely connected, the utility model has the function of gear-box with braking function and gear-box is easily installed in place.

Description

A kind of transmission mechanism with braking function

Technical field

The utility model relates to a kind of transmission mechanisms, and more specifically it is related to a kind of driver with braking function Structure.

Background technique

Same table is a common product in intelligent furniture field, traditional same table use screw rod gone up and down and for It improves lifting efficiency screw rod and usually rubs smaller, gone up and down without the screw rod of self-locking function, but such screw rod is due to lacking Weary self-lock ability is easy to cause same table position to adjust problem not in place because of the influence of gravity, is as shown in Figure 1 and Figure 2 one Kind same table, including two table legs 27, two table legs 27 are connected by connecting rod 111, and screw rod 26, silk are threaded on table leg 27 26 upper end of bar is equipped with desktop 112, and 112 lower surface of desktop is fixed with lifting motor 113, and lifting motor 113 passes through gear-box 1 and silk Bar 26 connects.

The shaft coupling 14 for connecting with lifting motor 113 is equipped in gear-box 1 as shown in Figure 1 and Figure 2, shaft coupling 14 One end is fixed with first bevel gear 19, and second bevel gear 28 is engaged with below first bevel gear 19, and second bevel gear 28 passes through Fastening screw 30 is fixedly connected with screw rod 26, is socketed with damping sleeve 20 in 28 lower end of second bevel gear, second bevel gear 28 can band 20 rotation of dynamic damping set, is arranged with helical spring 21, the internal diameter of helical spring 21 in a free state is smaller outside damping sleeve 20 In the outer diameter of damping sleeve 20, therefore 21 elastic compression of helical spring is in the outer peripheral surface of damping sleeve 20, one end of helical spring 21 with Gear-box 1 is fixedly connected, and the course of work is to drive the rotation of shaft coupling 14 so that 19 band of first bevel gear by lifting motor 113 Dynamic second bevel gear 28 rotates, to realize the rotation of screw rod 26 so that desktop 112 under the drive of screw rod 26 on move down It is dynamic.

When lifting motor 113 rotates forward so that desktop 112 rises, screw rod 26 is rotated forward, at this time the rotation direction of damping sleeve 20 With the hand of spiral of helical spring 21 on the contrary, influence of the helical spring 21 to screw rod 26 at this time is smaller to enable 26 turns of screw rod Dynamic, when lifting motor 113 inverts so that desktop 112 declines, screw rod 26 is inverted, at this time the rotation direction and spiral of damping sleeve 20 The hand of spiral of spring 21 is identical, and helical spring 21, which can be tightened, hinders damping sleeve 20 to rotate, and lifting motor 113 needs to drive screw rod 26 resistances for overcoming helical spring 21 to be formed could make desktop 112 decline

Lifting motor 113 stops operating after desktop 112 is moved to designated position, and desktop 112 can be in the work of gravity at this time It is inverted with lower drive screw rod 26, the reversion of screw rod 26 will drive the reversion of damping sleeve 20, so that helical spring 21 is in frictional force The lower tightening of effect, so that screw rod 26 can not rotate, so that desktop 112 will not move down under gravity, lifting motor 113 after stopping operating, and the height of desktop 112 is not easy to change, so that the height carving section of same table is not easy to change in place afterwards.

But when installing table leg 27, in order to enable the position height of two table legs 27 is consistent, in installation table leg 27 When need to abut table leg 27 with gear-box 1 so that the initial position of two table legs 27 is consistent, the mode usually adjusted is artificial Rotation second bevel gear 28 is come so that table leg 27 is abutted with gear-box 1, but rotate second bevel gear 28 make table leg 27 and When gear-box 1 abuts, helical spring 21 can shrink the rotation for hindering screw rod 26, so that screw rod 26 rotates difficulty, so that tooth Roller box 1 can not be adjusted in place, cause table leg 27 to connect with gear-box 1 not close, so that the position of different table legs 27 can be different Be unfavorable for using.

Utility model content

In view of the deficienciess of the prior art, the purpose of this utility model is to provide a kind of transmissions with braking function Mechanism has the function of that gear-box is easily installed in place.

To achieve the above object, the utility model provides following technical solution: a kind of driver with braking function Structure, including gear-box, gear-box include the left box body and right case being bolted, and are equipped with both ends and tooth in the gear-box The shaft coupling of roller box rotation connection, one end of the shaft coupling are connected with first bevel gear, the other end connection of the shaft coupling There is damping sleeve, the shaft coupling is able to drive damping sleeve synchronous rotation, and the shaft coupling can drive first bevel gear to rotate, and damps Helical spring is arranged with outside set and helical spring elasticity is connected on damping sleeve, and one end of the helical spring and gear-box are solid It is fixed, it is engaged with second bevel gear below the first bevel gear, is removably connected with screw rod below the second bevel gear, it is described Screw rod and gear-box are rotatablely connected.

By using above-mentioned technical proposal, when the mechanism is applied to same table, screw rod is threadedly coupled with table leg, gear Case is connect with desktop, when shaft coupling rotate forward when, first bevel gear rotate and drive second bevel gear rotation so that screw rod just Turn, so that gear-box is to the mobile lifting for realizing desktop in the direction far from table leg, shaft coupling rotation direction and spiral at this time The swirl direction of spring on the contrary, helical spring to shaft coupling hinder it is small enable shaft coupling normal rotation, when passing through lifting electricity When machine drives shaft coupling reversion, screw rod reversion, so that decline of the gear-box to the mobile realization desktop in direction for being close to table leg, Shaft coupling rotation direction is identical as the swirl direction of helical spring at this moment, and helical spring, which can be formed the rotation of shaft coupling, to be hindered Hinder, so that desktop can not decline, so that desktop is maintained at current location.

In debugging, damping sleeve and helical spring are not first installed, by manually making table leg and gear to invert shaft coupling Case abuts, and not will receive the obstruction of helical spring in the process so that adjusting is lighter, then by connection after adjusting Axis device, which is removed, simultaneously loads onto damping sleeve and helical spring, and second bevel gear and screw rod are not interfered with when removing shaft coupling Connection, to ensure that the upper end of table leg is abutted with gear-box bottom always, so that the installation of damping sleeve and helical spring It will not influence the adjusting of table leg, so that gear-box is easily installed in place.

The utility model is further arranged to: the shaft coupling includes axis body and the separation platform that is fixed on axis body, described It is equipped with hexagonal connecting hole in axis body, is all provided with that there are two the plane of rotation being parallel to each other, institutes on the axis body for separating platform two sides State damping sleeve and first bevel gear be located at the two sides for separating platform and with axis body clearance fit, the helical spring is equipped with along radius The extension end in direction, the gear-box inside are equipped with fixing groove, and the extension end is inserted into fixing groove.

By using above-mentioned technical proposal, helical spring is inserted into fixing groove the one end for realizing helical spring by extension end It is fixed, drive damping sleeve and first bevel gear to rotate by shaft coupling, when shaft coupling inverts between damping sleeve and helical spring Frictional force increase can generate a large amount of heat, separate platform and separate damping sleeve and first bevel gear, so that the heat on damping sleeve is not First bevel gear is easily influenced, so that the phenomenon that first bevel gear is operated under high temperature environment and worn is less prone to, so that first Bevel gear can more steady operation, improve the service life of first bevel gear.

The utility model is further arranged to: the front and rear sides of the gear-box are respectively equipped with first bearing position and the second axis Hold position, interference fit has a fore bearing and rear bearing respectively in first bearing position and second bearing position, one end of the axis body with Rear bearing rotation connection, the other end are arranged with first bevel gear, and first bevel gear and fore bearing are rotatablely connected.

By using above-mentioned technical proposal, one end of shaft coupling is rotatablely connected by first bevel gear and fore bearing, another End is rotatablely connected with rear bearing, is able to drive first bevel gear turn since axis body is equipped with when plane of rotation rotates shaft coupling It is dynamic.

The utility model is further arranged to: the lower section inside the gear-box is equipped with 3rd bearing position, 3rd bearing position Lower bearing is inside installed, the screw rod and lower bearing are rotatablely connected, and the screw rod sets that there are two phases on the outer peripheral surface of upper end Mutually parallel cutting face, the second bevel gear lower end are equipped with the mounting groove cooperated with screw rod, are equipped in second bevel gear upper end Lower caulking groove, the lower caulking groove are connected to mounting groove.

By using above-mentioned technical proposal, by screw from top penetrate second bevel gear and by lower caulking groove and mounting groove with Fixing threaded hole is threadedly coupled the connection for realizing second bevel gear and first bevel gear, and the head of screw can be embedded in lower caulking groove In, so that screw is not easy to influence the rotation of shaft coupling and installation, while screw rod sets that there are two mutually on the outer peripheral surface of upper end Rotational efficienty is improved so that second bevel gear is not easy to skid when driving screw rod rotation in parallel cutting face.

The utility model is further arranged to: on the inner wall of the first bearing position, second bearing position and 3rd bearing position It is equipped with multiple heat dissipation cavities.

By using above-mentioned technical proposal, shaft coupling also can generate a large amount of heat with fore bearing and rear bearing in rotation Amount, while screw rod can generate a large amount of heat with lower bearing in the running, heat dissipation cavity enables to fore bearing, rear bearing and lower axle The heat-dissipating space for holding side increases, the timely steady operation so that mechanism can radiate in the running.

The utility model is further arranged to: the gear-box lower end is equipped with rubber pad, and the upper end of the rubber pad is embedded in In gear-box.

By using above-mentioned technical proposal, it is hardly damaged when rubber pad enables to gear-box to contact with table leg.

The utility model is further arranged to: the quadrangle of the right case towards the side of left box body is equipped with installation spiral shell Hole, the left box body are equipped with location hole corresponding with installation screw, and the end of the installation screw is equipped with positioning table, is positioning Hole is equipped with the locating slot cooperated with positioning table towards the side of left box body.

By using above-mentioned technical proposal, when right case and left box body are bolted, pass through when installing bolt Make installation screw is corresponding with location hole to be easily installed bolt in positioning table insertion locating slot.

The utility model is further arranged to: the left box body is equipped with clamping platform towards the side of right case, in right case It is equipped with the clamping groove being interference fitted with clamping platform.

First clamping platform is caught in when being connected right case with left box body by bolt by using above-mentioned technical proposal It is not readily separated right case and left box body when not by external force, plays the role of connecting in advance, so that installation spiral shell It is more easy and convenient when bolt connects right case with left box body.

In conclusion the utility model has the advantage that

1. desktop can drive screw rod to invert under gravity in actual use after desktop is raised to designated position, And screw rod reversion will drive damping sleeve reversion, so that helical spring is tightened under the action of frictional force hinders the anti-of damping sleeve Turn, so that screw rod can not rotate, play the role of braking in time, so that desktop will not be in weight after being raised to designated position It is moved down under the action of power；

2. damping sleeve and helical spring are mounted on shaft coupling, damping sleeve and spiral bullet can be installed when adjusting table leg first Spring abuts with table leg so as to adjust to arrive gear-box, and damping sleeve and helical spring is mounted on connection again after the completion of adjusting When on axis device, it is not necessary to separate second bevel gear with screw rod, so that the installation of damping sleeve and helical spring will not influence screw rod Position, so that the position of each table leg is consistent, guarantees table to can guarantee that table leg is abutted with gear-box using mechanism It is sub horizontal.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of same table in background technique；

Fig. 2 is the schematic diagram of the structure of each part connection relationship in the gear-box highlighted in background technique in same table；

The structural schematic diagram of Fig. 3 the present embodiment；

Fig. 4 is the perspective view of the explosion of the present embodiment；

The perspective view of the explosion at another visual angle of Fig. 5 the present embodiment；

Fig. 6 is the structural schematic diagram for highlighting each part connection relationship in the present embodiment middle gear case.

Description of symbols: 1, gear-box；2, left box body；3, right case；4, installation screw；5, location hole；6, positioning table； 7, locating slot；8, clamping platform；9, clamping groove；10, first bearing position；11, second bearing position；12, fore bearing；13, rear bearing； 14, shaft coupling；15, connecting hole；16, plane of rotation；17, axis body；18, separate platform；19, first bevel gear；20, damping sleeve；21, spiral shell Revolve spring；22, extension end；23, fixing groove；24,3rd bearing position；25, lower bearing；26, screw rod；27, table leg；28, the second cone Gear；29, fixing threaded hole；30, fastening screw；31, lower caulking groove；32, heat dissipation cavity；33, cutting face；34, rubber pad；35, it installs Slot；111, connecting rod；112, desktop；113, lifting motor.

Specific embodiment

The utility model is described in further detail below in conjunction with attached drawing.

Present embodiment discloses a kind of brake apparatus, and as shown in Figure 3, Figure 4, including gear-box 1, gear-box 1 include left case Body 2 and right case 3, right case 3 towards the side of left box body 2 quadrangle be equipped with installation screw 4, on left box body 2 be equipped with The corresponding location hole 5 of installation screw 4, penetrating location hole 5 by bolt and be threadedly coupled with installation screw 4 can be realized left box body 2 and right case 3 connection.

As shown in Figure 4, Figure 5, it is equipped with positioning table 6 in the end of installation screw 4, in location hole 5 towards the side of left box body 2 It, can by the insertion locating slot 7 of positioning table 6 when connecting left box body 2 and right case 3 equipped with the locating slot 7 cooperated with positioning table 6 So that left box body 2 and right case 3 play certain supporting role when not connected and facilitate installation screw 4 and location hole 5 Docking, so that left box body 2 and the connection of right case 3 are more easy and convenient.

As shown in Figure 4, Figure 5, left box body 2 towards the side of right case 3 be equipped with clamping platform 8, on right case 3 be equipped with Clamping platform 8 is inserted into and is clamped before being bolted left box body 2 and right case 3 by the clamping groove 9 that clamping platform 8 is interference fitted In slot 9, so that left box body 2 and right case 3 are not readily separated, bolt is installed convenient for people and connects left box body 2 and right case 3.

As shown in Figure 5, Figure 6, it is respectively equipped with first bearing position 10 and second bearing position 11 in the front and rear sides of gear-box 1, It is separately installed with fore bearing 12 and rear bearing 13 in first bearing position 10 and second bearing position 11, connection is equipped in gear-box 1 Axis device 14, shaft coupling 14 include axis body 17 and the separation platform 18 being fixed on axis body 17, are equipped with hexagonal connection in axis body 17 Hole 15 separates the plane of rotation 16 being parallel to each other there are two being all provided on the axis body 17 at 18 both ends of platform, one end of axis body 17 and the second axis The interference fit of position 11 is held, the other end is arranged with first bevel gear 19, first bevel gear 19 and 17 clearance fit of axis body and and front axle 12 rotation connections are held, the side clearance fit for separating platform 18 towards rear bearing 13 has damping sleeve 20, the both ends difference of damping sleeve 20 It is abutted with separation platform 18 and rear bearing 13, so that damping sleeve 20 is not easy to slide on axis body 17.

As shown in Figure 5, Figure 6, helical spring 21, the internal diameter of helical spring 21 in a free state are arranged with outside damping sleeve 20 Less than the outer diameter of damping sleeve 20, thus outer peripheral surface of the elastic compression in damping sleeve 20 in a free state of helical spring 21, spiral The inner end of spring 21 is connected on damping sleeve 20, and helical spring 21 is equipped with along the extension end that radial direction extends 22, extension end In fixing groove 23 inside 22 insertion gear-boxes 1, it will drive damping sleeve 20 when shaft coupling 14 rotates and rotate together, damp simultaneously Set 20 is limited and will not be slided on axis body 17 by separation platform 18 and gear-box 1.

As shown in Figure 5, Figure 6, the lower section inside gear-box 1 is equipped with 3rd bearing position 24, installation in 3rd bearing position 24 There is lower bearing 25, screw rod 26 is equipped with below gear-box 1, table leg 27 is threaded on screw rod 26, the upper end of screw rod 26 is under Bearing 25, which is rotatablely connected, is simultaneously connected with second bevel gear 28, and second bevel gear 28 is located at the lower section of first bevel gear 19 and with first Bevel gear 19 engages, and screw rod 26 sets that there are two the cutting face 33 that is parallel to each other, the upper ends of screw rod 26 on the outer peripheral surface of upper end Equipped with fixing threaded hole 29, the mounting groove 35 cooperated with 26 upper end of screw rod is equipped in 28 lower end of second bevel gear, in second bevel gear 28 upper ends are equipped with lower caulking groove 31, and lower caulking groove 31 is connected to mounting groove 35, when screw rod 26 to be connect with second bevel gear 28, by silk 26 upper end of bar is inserted into mounting groove 35 and realizes screw rod 26 and second by the threaded connection of fastening screw 30 and fixing threaded hole 29 The connection of bevel gear 28, and the head of fastening screw 30 is embedded in lower caulking groove 31 and fastening screw 30 is made to will not influence shaft coupling 14 rotation.

As shown in Figure 5, Figure 6, rubber pad 34 is equipped between gear-box 1 and table leg 27, the upper end of rubber pad 34 is embedded in tooth In roller box 1, table leg 27 is contacted with gear-box 1 by rubber pad 34 so that gear-box 1 by rubber pad 34 protection with table leg It is not easy to wear when 27 contact.

As shown in Figure 4, Figure 5, it is equipped on the inner wall of first bearing position 10, second bearing position 11 and 3rd bearing position 24 Multiple heat dissipation cavities 32, heat dissipation cavity 32 enable between fore bearing 12, rear bearing 13 and lower bearing 25 and gear-box 1 that there are skies Gap improves the stability of mechanism operation so that fore bearing 12, rear bearing 13 and the heat dissipation of lower bearing 25 are faster.

Specific telescopic process: in actual use, gear-box 1 and desktop 112 is fixed, the fixation of table leg 27 not can rotate, When by lifting motor 113 drive shaft coupling 14 rotate forward when, first bevel gear 19 rotate and drive second bevel gear 28 rotation from And screw rod 26 is rotated forward, so that lifting of the gear-box 1 to the mobile realization desktop 112 in the direction far from table leg 27, herein When 14 rotation direction of shaft coupling and helical spring 21 swirl direction on the contrary, helical spring 21 to shaft coupling 14 hinder very little will not The rotation for influencing shaft coupling 14, after desktop 112 is increased to designated position, lifting motor 113 is stalled, and the meeting of desktop 112 at this time exists Decline under gravity, so that screw rod 26 inverts, screw rod 26 drives shaft coupling 14 and damping sleeve 20 to invert after inverting, at this time Helical spring 21 can invert contraction and shaft coupling 14 is hindered to rotate, so that screw rod 26 can not invert, desktop 112 be tieed up It holds in specified height.

Specific debugging process: in debugging, first damping sleeve 20 and helical spring 21 are not installed, rotate shaft coupling by manually Device 14 abuts table leg 27 with rubber pad 34, not will receive the obstruction of helical spring 21 in the process so that adjusting lighter Then shaft coupling 14 is removed after adjusting and loads onto damping sleeve 20 and helical spring 21 by pine, removing shaft coupling 14 When do not interfere with the connection of second bevel gear 28 and screw rod 26, thus ensure that the upper end of table leg 27 always with rubber pad 34 It abuts, so that the installation of damping sleeve 20 and helical spring 21 will not influence the adjusting of table leg 27.

The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all practical at this Within novel design concept, any modification, equivalent replacement, improvement and so on should be included in the protection of the utility model Within the scope of.

Claims (8)

1. a kind of transmission mechanism with braking function, including gear-box (1), gear-box (1) include the left side being bolted Cabinet (2) and right case (3), it is characterised in that: the connection in the gear-box (1) equipped with both ends and gear-box (1) rotation connection One end of axis device (14), the shaft coupling (14) is connected with first bevel gear (19), the other end connection of the shaft coupling (14) Have damping sleeve (20), the shaft coupling (14) is able to drive damping sleeve (20) synchronous rotation, and the shaft coupling (14) can drive the One bevel gear (19) rotation, damping sleeve (20) is arranged with helical spring (21) outside and helical spring (21) elasticity is connected to damping sleeve (20) on, one end and gear-box (1) of the helical spring (21) are fixed, are engaged with second below the first bevel gear (19) Bevel gear (28), second bevel gear (28) lower section are removably connected with screw rod (26), the screw rod (26) and gear-box (1) Rotation connection.

2. a kind of transmission mechanism with braking function according to claim 1, it is characterised in that: the shaft coupling (14) Including axis body (17) and the separation platform (18) being fixed on axis body (17), hexagonal connecting hole is equipped in the axis body (17) (15), the plane of rotation (16) being parallel to each other there are two being all provided on the axis body (17) for separating platform (18) two sides, the damping sleeve (20) and first bevel gear (19) be located at separate platform (18) two sides and with axis body (17) clearance fit, the helical spring (21) It is equipped with and is equipped with fixing groove (23) inside the extension end that radial direction extends (22), the gear-box (1), the extension end (22) in insertion fixing groove (23).

3. a kind of transmission mechanism with braking function according to claim 2, it is characterised in that: the gear-box (1) Front and rear sides be respectively equipped with first bearing position (10) and second bearing position (11), in first bearing position (10) and second bearing position (11) interference fit has fore bearing (12) and rear bearing (13) respectively in, and one end and rear bearing (13) of the axis body (17) rotate Connection, the other end are arranged with first bevel gear (19), and first bevel gear (19) and fore bearing (12) are rotatablely connected.

4. a kind of transmission mechanism with braking function according to claim 1, it is characterised in that: the gear-box (1) Internal lower section is equipped with 3rd bearing position (24), is equipped with lower bearing (25) in 3rd bearing position (24), the screw rod (26) with Lower bearing (25) rotation connection, the screw rod (26) set that there are two the cutting faces that are parallel to each other on the outer peripheral surface of upper end (33), second bevel gear (28) lower end is equipped with the mounting groove (35) cooperated with screw rod (26), on second bevel gear (28) End is equipped with lower caulking groove (31), and the lower caulking groove (31) is connected to mounting groove (35).

5. a kind of transmission mechanism with braking function according to claim 4, it is characterised in that: the first bearing position (10), multiple heat dissipation cavities (32) are equipped on the inner wall of second bearing position (11) and 3rd bearing position (24).

6. a kind of transmission mechanism with braking function according to claim 1, it is characterised in that: the gear-box (1) Lower end is equipped with rubber pad (34), in upper end insertion gear-box (1) of the rubber pad (34).

7. a kind of transmission mechanism with braking function according to claim 1, it is characterised in that: the right case (3) Installation screw (4) are equipped with towards the quadrangle of the side of left box body (2), the left box body (2) is equipped with right with installation screw (4) The location hole (5) answered, the end of the installation screw (4) are equipped with positioning table (6), in location hole (5) towards the one of left box body (2) Side is equipped with the locating slot (7) cooperated with positioning table (6).

8. a kind of transmission mechanism with braking function according to claim 1, it is characterised in that: the left box body (2) Clamping platform (8) are equipped with towards the side of right case (3), the clamping groove being interference fitted with clamping platform (8) is equipped on right case (3) (9)。