CN211673256U

CN211673256U - Height adjusting mechanism

Info

Publication number: CN211673256U
Application number: CN201921893281.2U
Authority: CN
Inventors: 丁晓东; 王从科; 郝鹏鹏
Original assignee: Zhengzhou Lisheng Scientific Educational Equipemnt Co ltd
Current assignee: Zhengzhou Lisheng Scientific Educational Equipemnt Co ltd
Priority date: 2019-11-05
Filing date: 2019-11-05
Publication date: 2020-10-16
Anticipated expiration: 2029-11-05

Abstract

The utility model relates to a height adjusting mechanism, include: an outer housing; a rotation regulating member rotatably provided inside the outer case; the screw rod is rotatably arranged at the top of the outer shell and is in transmission connection with the rotation adjusting component; a lifting nut member fitted outside the screw, the lifting nut member being screw-coupled with the screw; the adjusting component is rotated through operation, the screw rod is driven to rotate relative to the lifting nut component, so that the lifting of the table legs is adjusted, the table legs do not need to be fixed after the adjustment is finished, the table legs can be kept stable through thread self-locking, and the adjustment is convenient; after the lifting nut component has the situation that threads are slippery or the threads are disordered, the lifting nut component can be detached and replaced, so that the maintenance is convenient and the maintenance cost is low.

Description

Height adjusting mechanism

Technical Field

The utility model belongs to the field of machinery, concretely relates to height adjusting mechanism.

Background

In the prior art, the chinese utility model patent with application number CN201320069685.6 discloses an adjustable desk leg and a desk, which comprises a hollow desk leg body and a height-adjusting base installed at the bottom end of the desk leg body; the bottom end of the table leg body is drilled with a threaded hole, the heightening base comprises a screw rod and a locking nut, the screw rod is matched with the threaded hole, and the locking nut locks the table leg body and the screw rod; it is inconvenient in the use to adjust, adjusts at every turn and all need twist lock nut to, the screw hole sets up in the bottom of table leg body, and screw hole and table leg body structure as an organic whole, in the use, after the condition of the smooth silk of screw tooth or indiscriminate tooth appears, need change the table leg, and maintenance cost is higher.

Disclosure of Invention

To the not enough that exists among the prior art, the utility model provides a height adjusting mechanism who conveniently adjusts and maintain.

The technical scheme of the utility model is that: height adjustment mechanism includes: an outer housing; a rotation regulating member rotatably provided inside the outer case; the screw rod is rotatably arranged at the top of the outer shell and is in transmission connection with the rotation adjusting component; a lifting nut member fitted outside the screw, the lifting nut member being screw-coupled with the screw.

The screw rod is rotatably connected with the outer shell through a bearing, and a transmission gear which is driven by the rotation adjusting component is sleeved at the end part of the screw rod.

The transmission adjusting component is provided with an adjusting pipe, an inner hexagonal jack is axially formed in the adjusting pipe, first transmission teeth are uniformly arranged on the outer side of the adjusting pipe around the circumference of the adjusting pipe, and the transmission gear is provided with a second mounting hole fixedly connected with the end portion of the screw rod and second transmission teeth matched with the first transmission teeth.

The lifting nut component comprises a hollow structure connector and a limiting plate arranged at one end of the connector, a thread driving pipe extending into the connector is arranged on the limiting plate, and a check block is arranged on the side face of the connector.

The screw thread driving pipe is inboard to be seted up there is the internal screw thread body structure, the screw thread driving pipe with the limiting plate is linked together and is connected into an organic whole structure, the screw thread driving pipe is in the inside of connector is followed the axial extension of connector.

The bilateral symmetry of connector is provided with the non return piece, the non return piece with connector structure as an organic whole.

The outer side of the connector is uniformly provided with reinforcing ribs parallel to the axial direction of the connector, and one ends of the reinforcing ribs, which deviate from the limiting plates, are in smooth transition with the connector.

The connector on with the one end border that the spacing board deviates from is provided with the chamfer, on the limiting plate with one side border that the connector deviates from mutually is provided with the chamfer.

The outer shell is provided with two shell assemblies, and the shell assemblies are provided with second mounting grooves for mounting the screw rods and first mounting holes for mounting the rotary adjusting members.

Can dismantle fixed connection between two casing subassemblies, casing subassembly's lower extreme is provided with first mounting groove.

The utility model has the advantages that:

(1) the adjusting component is rotated through operation, the screw rod is driven to rotate relative to the lifting nut component, so that the lifting of the table legs is adjusted, the table legs do not need to be fixed after the adjustment is finished, the table legs can be kept stable through thread self-locking, and the adjustment is convenient;

(2) after the lifting nut component has the situation that threads are slippery or the threads are disordered, the lifting nut component can be detached and replaced, so that the maintenance is convenient and the maintenance cost is low.

Drawings

Fig. 1 is a schematic diagram of the external structure of the present invention.

Fig. 2 is a schematic diagram of the internal structure of the present invention.

Fig. 3 is a schematic structural view of the middle rotation adjusting member of the present invention.

Fig. 4 is a schematic structural view of the transmission gear of the present invention.

Fig. 5 is a schematic structural view of the lifting nut member of the present invention.

Fig. 6 is a schematic structural diagram of the middle housing assembly of the present invention.

Detailed Description

The utility model discloses a high adjustment mechanism, can be used to lift adjustment, specifically can be used to the high adjustment to the desk, can install during the use between table leg section bar and table leg branch, rotate the adjusting member through the operation, drive screw rotates relative lift nut component and rotates, thereby adjust the lift of table leg, it need not fixedly to adjust the back of finishing, can remain stable through the screw auto-lock, it is convenient to adjust, and after the condition of screw thread smooth silk or indiscriminate tooth appears in the lift nut component, can only pull down the change with the lift nut component can, convenient maintenance and maintenance cost are lower, it is right to combine below drawing and embodiment the utility model discloses a further description is done to concrete embodiment.

As shown in fig. 1 and 2, the height adjusting mechanism includes: an outer shell 1; a rotation regulating member 2, the rotation regulating member 2 being rotatably provided inside the outer case 1; the screw rod 4 is rotationally arranged at the top of the outer shell 1, and the screw rod 4 is in transmission connection with the rotation adjusting component 2; the lifting nut member 5 is assembled outside the screw rod 4, and the lifting nut member 5 is in threaded connection with the screw rod 4; in this embodiment, the top of the lifting nut member 5 is detachably and fixedly connected with the leg profile 6, the bottom of the outer housing 1 is fixedly provided with the leg support rod 7, the lifting nut member 5 can be moved up and down on the screw rod 4 by rotating the rotation adjusting member 2, the screw rod 4 and the lifting nut member 5 are driven to rotate relatively by rotating the rotation adjusting member 2, and the distance between the leg profile 6 and the leg support rod 7 is increased or decreased by controlling the forward rotation and the backward rotation of the rotation adjusting member 2, so that the height of the desk can be adjusted; and lifting nut component 5 and table leg section bar 6 can be dismantled and be connected, after the condition that the screw thread is smooth or the indiscriminate tooth appears in lifting nut component 5, can only pull down lifting nut component 5 and change, convenient maintenance and maintenance cost are lower.

The screw rod 4 is rotationally connected with the outer shell 1 through a bearing 9, and a transmission gear 3 which is driven by the rotation adjusting component 2 is fixedly sleeved at the end part of the screw rod 4; further, as shown in fig. 3, the transmission adjusting member 2 has an adjusting tube 203, an inner hexagonal socket 205 is axially formed in the adjusting tube 203, in the adjusting process, an inner hexagonal wrench can be inserted into the inner hexagonal socket 205, the transmission adjusting member 2 is rotated to adjust, first transmission teeth 202 are uniformly arranged around the circumference of the outer side of the adjusting tube 203, as shown in fig. 4, the transmission gear 3 has a second mounting hole 301 fixedly connected with the end of the screw rod 4 and a second transmission tooth 302 matched with the first transmission teeth 202, wherein the second mounting hole 301 is an inner hexagonal hole, and the bottom end of the screw rod 4 has a hexagonal prism structure matched with the inner hexagonal hole.

As shown in fig. 5, the lifting nut member 5 includes a connecting head 501 having a hollow structure and a limiting plate 503 disposed at one end of the connecting head 501, the limiting plate 503 is provided with a threaded driving pipe 502 extending into the connecting head 501, and a check block 504 is disposed at a side surface of the connecting head; the connecting head 501 is inserted into the end part of the table leg section bar 6 in the using process, therefore, the external shape of the connecting head 501 is matched with the internal structure of the table leg section bar 6, the limiting plate 503 is clung to the end part of the table leg section bar 6 after the connecting head 501 is inserted into the table leg section bar 6, the table leg section bar is supported and plays a role of supporting, the screw thread driving pipe 502 moves up and down along the screw rod 4 to adjust under the condition that the screw rod 4 rotates relative to the screw rod 4, the function of adjusting the height of the table leg is realized, the check block 504 is connected with the section bar in a buckling way after the connecting head 501 is inserted into the table leg section bar 6, the connecting head 501 is prevented from slipping from the table leg section bar in the normal use and adjustment process, in particular, both sides of the end part of the table leg section bar 6 are provided with rectangular opening bayonets 601 corresponding to the, when the lifting nut member 5 needs to be replaced, the check block 504 is pressed inwards from the outer side of the leg profile 6, the connecting head 501 deforms inwards, the check block 504 is separated from the bayonet 601, and the lifting nut member 5 can be taken out of the leg profile 6 for replacement.

The thread driving pipe 502 is of a pipe body structure with internal threads formed on the inner side, the thread driving pipe 502 is communicated with the limiting plate 503 and connected into an integral structure, and the thread driving pipe 502 extends in the axial direction of the connector 501 in the connector 501; check blocks 504 are symmetrically arranged on two sides of connecting head 501, check blocks 504 and connecting head 501 are of an integral structure, and check blocks 504 are of a protruding structure with a right-angled triangle cross section; reinforcing ribs 505 which are parallel to the axial direction of the connector 501 are uniformly arranged on the outer side of the connector 501, and one ends of the reinforcing ribs 505, which are deviated from the limiting plates 503, are in smooth transition with the connector 501; the connector 501 is provided with a chamfer at one end edge deviating from the limiting plate 503, and the limiting plate 503 is provided with a chamfer at one side edge deviating from the connector 501.

As shown in fig. 6, the outer casing 1 has two casing assemblies 101, and the casing assemblies 101 are provided with second mounting grooves 105 for mounting the screws 4 and first mounting holes 106 for mounting the rotation adjusting members 2; a second clamping groove 104 perpendicular to the second mounting groove 105 is formed in the top of the housing assembly 101, and the bearing 9 is clamped in the second clamping groove 104 to support the screw rod 4; the two ends of the adjusting pipe 203 in the rotary adjusting component 2 are both provided with clamping platforms 204 matched with the first mounting holes 106, and the first mounting holes 106 of the two shell assemblies 101 are used for rotationally fixing the two ends of the rotary adjusting component 2 in the outer shell 1; the two shell assemblies 101 are detachably and fixedly connected, bolt holes 107 and internal thread columns 108 are correspondingly arranged between the two shell assemblies 101, the bolt holes 107 can be sleeved at the ends of the internal thread columns 108, and the other sides of the shell assemblies 101 are fixed through bolts; the lower extreme of casing subassembly 101 is provided with the first mounting groove 103 that is used for fixed table leg branch 7, be provided with on casing subassembly 101 with first mounting groove 103 looks vertically first draw-in groove 102, the first draw-in groove 102 of two casing subassemblies 101 encloses to close to form hexagonal prism cavity, the fixed hexagonal prism piece that is provided with this hexagonal prism cavity assorted in upper end of table leg branch 7 for fixed connection between table leg branch 7 and the shell body 1, relative rotation can not take place, the influence is adjusted.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A height adjustment mechanism, comprising:

an outer housing;

a rotation regulating member rotatably provided inside the outer case;

the screw rod is rotatably arranged at the top of the outer shell and is in transmission connection with the rotation adjusting component;

a lifting nut member fitted outside the screw, the lifting nut member being screw-coupled with the screw.

2. The height adjustment mechanism of claim 1, wherein: the screw rod is rotatably connected with the outer shell through a bearing, and a transmission gear which is driven by the rotation adjusting component is sleeved at the end part of the screw rod.

3. The height adjustment mechanism of claim 2, wherein: the rotary adjusting component is provided with an adjusting pipe, an inner hexagonal jack is formed in the axial direction of the adjusting pipe, first transmission teeth are uniformly arranged on the outer side of the adjusting pipe around the circumference of the adjusting pipe, and the transmission gears are provided with second mounting holes fixedly connected with the end portions of the screw rods and second transmission teeth matched with the first transmission teeth.

4. The height adjustment mechanism of claim 1, wherein: the lifting nut component comprises a hollow structure connector and a limiting plate arranged at one end of the connector, a thread driving pipe extending into the connector is arranged on the limiting plate, and a check block is arranged on the side face of the connector.

5. The height adjustment mechanism of claim 4, wherein: the screw thread driving pipe is inboard to be seted up there is the internal screw thread body structure, the screw thread driving pipe with the limiting plate is linked together and is connected into an organic whole structure, the screw thread driving pipe is in the inside of connector is followed the axial extension of connector.

6. The height adjustment mechanism of claim 4, wherein: the bilateral symmetry of connector is provided with the non return piece, the non return piece with connector structure as an organic whole.

7. The height adjustment mechanism of claim 4, wherein: the outer side of the connector is uniformly provided with reinforcing ribs parallel to the axial direction of the connector, and one ends of the reinforcing ribs, which deviate from the limiting plates, are in smooth transition with the connector.

8. The height adjustment mechanism of claim 4, wherein: the connector on with the one end border that the spacing board deviates from is provided with the chamfer, on the limiting plate with one side border that the connector deviates from mutually is provided with the chamfer.

9. The height adjustment mechanism according to any one of claims 1 to 8, wherein: the outer shell is provided with two shell assemblies, and the shell assemblies are provided with second mounting grooves for mounting the screw rods and first mounting holes for mounting the rotary adjusting members.

10. The height adjustment mechanism of claim 9, wherein: can dismantle fixed connection between two casing subassemblies, casing subassembly's lower extreme is provided with first mounting groove.