CN215838983U

CN215838983U - Arm lifting rod

Info

Publication number: CN215838983U
Application number: CN202122141867.7U
Authority: CN
Inventors: 温启宏
Original assignee: Xiamen Jinhongchang Optical Instrument Co ltd
Current assignee: Xiamen Jinhongchang Optical Instrument Co ltd
Priority date: 2021-09-07
Filing date: 2021-09-07
Publication date: 2022-02-18
Anticipated expiration: 2031-09-07

Abstract

The utility model relates to a elevating gear's technical field, concretely relates to arm lifter, it is including slide bar, parent tube and guider, and guider sets up on the inside pipe wall of parent tube, and guider includes guide sleeve, and guide sleeve sets up on the inside pipe wall of parent tube, is provided with the locating component who is used for fixed guide sleeve on the inside pipe wall of parent tube, and slide bar slides along vertical direction and sets up on guide sleeve's inside pipe wall. This application has the effect that improves arm lifter lifting stability.

Description

Arm lifting rod

Technical Field

The application relates to the technical field of lifting devices, in particular to an arm lifting rod.

Background

The arm lifting rod is a lifting structure and mainly plays a role in lifting the test window on the eye test instrument, so that the test window is adaptive to people with different heights. The arm lifter comprises a base pipe, a sliding rod and a guide device, the sliding rod slides along the vertical direction and is arranged in the base pipe, the guide device comprises a linear bearing, the linear bearing is arranged on the inner wall of the base pipe, and the sliding rod is arranged in the linear bearing in a penetrating mode.

When the height of the test window is adjusted, the sliding rod slides in the base pipe along the vertical direction, and meanwhile, the linear bearing guides the sliding rod, so that the height of the test window is adjusted. But the inside ball of linear bearing causes the extrusion to the outer wall of slide bar easily to make the outer wall of slide bar produce sunken condition gradually, thereby make the askew condition of slide bar appear, influence the level of test window.

SUMMERY OF THE UTILITY MODEL

In order to improve the lift stability of arm lifter, this application provides an arm lifter.

The application provides a pair of arm lifter adopts following technical scheme:

the utility model provides an arm lifter, includes slide bar, parent tube and guider, guider sets up on the inside pipe wall of parent tube, guider includes guide sleeve, guide sleeve sets up on the inside pipe wall of parent tube, be provided with the locating component who is used for fixed guide sleeve on the inside pipe wall of parent tube, slide bar slides along vertical direction and sets up on guide sleeve's inside pipe wall.

Through adopting above-mentioned technical scheme, the pole that slides wears to establish in the guide sleeve, and the guide sleeve leads the pole that slides for the pole that slides along vertical direction steadily in the parent tube, thereby improves the lift stability of arm lifter.

Optionally, be provided with the holding tank on the inside pipe wall of parent tube, the axial end wall of parent tube one end is run through to the holding tank, the guide sleeve butt is on the cell wall of holding tank, be provided with the draw-in groove on the cell wall of holding tank, locating component includes interior snap ring, in the ring outer wall of interior snap ring stretches into the draw-in groove, interior snap ring supports tightly between the cell wall of guide sleeve along slide bar glide direction and draw-in groove along slide bar glide direction.

By adopting the technical scheme, the groove wall of the accommodating groove limits the guide sleeve in the vertical direction, so that the situation that the guide sleeve deviates in the base pipe is reduced, and the lifting stability of the arm lifting rod is improved; simultaneously when putting into the parent tube with guide sleeve, directly put into the holding tank with guide sleeve and with cell wall butt, can be so that guide sleeve is located convenient fixed position, the snap ring is fixed guide sleeve in making things convenient for. The inner clamping ring tightly supports the guide sleeve, and meanwhile, the inner clamping ring is matched with the groove wall of the accommodating groove, so that the guide sleeve is fixed conveniently and quickly; and because the inner snap ring is comparatively easy to disassemble, the damaged guide sleeve can be conveniently replaced in the later period.

Optionally, the outer wall of the base pipe at the bottom end of the base pipe is provided with a mounting block.

Through adopting above-mentioned technical scheme, set up the installation piece on the parent tube, conveniently install the arm lifter on other machines.

Optionally, the guide sleeve is a self-lubricating plastic base pipe.

By adopting the technical scheme, the lubricating effect is better, so that the friction force generated between the sliding rod and the inner wall of the guide sleeve pipe is smaller, the lifting of the sliding rod is facilitated, and the lifting stability of the arm lifting rod is improved; and because the sleeve pipe wear resistance that self-lubricating plastics made is excellent to extension guide sleeve's life reduces the condition that leads to the pole that slides to take place the skew because of guide sleeve pipe wearing and tearing simultaneously, improves the lift stability of arm lifter.

Optionally, the top of parent tube is provided with the closing cap, run through on the closing cap and be provided with the perforation, the one end of pole that slides passes the perforation and stretches into in the parent tube.

Through adopting above-mentioned technical scheme, the closing cap seals the parent tube, reduces in debris get into the parent tube to reduce because of debris influence the condition that the pole that slides, improve the lift stability of arm lifter.

Optionally, a guide groove is formed in the top end wall of the base pipe, a guide rod is arranged on the sliding rod, and the guide rod penetrates through the sealing cover and is arranged on the groove wall of the guide groove in a sliding mode in the vertical direction.

By adopting the technical scheme, the guide rod is arranged on the groove wall of the guide groove in a sliding manner along the vertical direction, so that the sliding rod is further guided; and under the condition that the guide sleeve pipe is damaged, the guide effect of the guide rod can reduce the condition that the sliding rod is inclined, and the lifting stability of the arm lifting rod is improved.

Optionally, a positioning rod is arranged on the guide sleeve, the positioning rod is a rectangular rod, a positioning groove is formed in the groove wall of the accommodating groove along the sliding direction of the sliding rod, and the positioning rod is inserted into the positioning groove.

Through adopting above-mentioned technical scheme, the locating lever is inserted and is established in the constant head tank, because the locating lever is the cuboid pole, consequently the locating lever can not take place to rotate in the constant head tank to reduce the guide sleeve pipe and take place the pivoted condition in the parent tube, improve guide sleeve's stability, thereby improve the stability of arm lifter.

Optionally, a sliding groove is formed in the closed cover in a penetrating mode, a disassembling piece is arranged on the closed cover and comprises a connecting rod and a hook ring, the connecting rod is inserted into the groove wall of the sliding groove, one end of the connecting rod stretches into the base pipe, the hook ring is arranged at one end of the connecting rod, which stretches into the base pipe, mounting holes are formed in two ends of the opening of the inner snap ring, through holes are formed in the hole wall of each mounting hole, and the hook ring is sleeved between the hole walls of the two through holes.

Through adopting above-mentioned technical scheme, when needing to be changed the guide sleeve, can take off the closing cap, drive connecting rod upward movement to drag at the shackle and make interior clamping ring roll-off draw-in groove down, can remove the fixed to the guide sleeve, convenient and fast ground takes out the guide sleeve and changes. And when the closing cap is installed, the closing cap needs to be rotated, and the connecting rod slides on the groove wall of the sliding groove, so that the influence of the connecting rod on the rotation of the closing cap is reduced, and the closing cap is convenient to install.

In summary, the present application includes at least one of the following beneficial technical effects:

according to the arm lifting rod, the guide sleeve is arranged on the inner wall of the tube of the base tube, and the guide sleeve is used for guiding the sliding rod;

according to the arm lifting rod, the pipe orifice of the base pipe is sealed through the sealing cover, so that sundries are prevented from entering the base pipe, the situation that the sliding rod slides due to the sundries is reduced, and the lifting stability of the arm lifting rod is improved;

by arranging the accommodating groove on the inner wall of the base pipe, the guide sleeve can be conveniently and quickly positioned at a convenient fixed position when the guide sleeve is placed in; meanwhile, the groove wall of the accommodating groove limits the guide sleeve in the vertical direction, and the guide sleeve is fixed by matching with the inner clamping ring, so that the offset of the position of the guide sleeve is reduced, and the lifting stability of the arm lifting rod is improved.

Drawings

Fig. 1 is a schematic structural diagram of an arm lifting rod in embodiment 1 of the present application.

FIG. 2 is a partial cross-sectional view of a base pipe structure embodying the embodiment 1 of the present application.

Fig. 3 is an enlarged view at a in fig. 2.

Fig. 4 is a schematic diagram for embodying the inner snap ring structure in embodiment 1 of the present application.

Fig. 5 is a schematic structural diagram of an arm lifting rod in embodiment 2 of the present application.

FIG. 6 is a partial cross-sectional view of a base pipe structure embodying the embodiment of the present application, example 2.

Fig. 7 is an enlarged view at B in fig. 6.

Fig. 8 is an enlarged view at C in fig. 6.

Fig. 9 is an enlarged view at D in fig. 6.

Fig. 10 is a schematic view of a structure of a dismounting member used in embodiment 2 of the present application.

Description of reference numerals: 1. a base pipe; 11. a closure cap; 12. a card slot; 13. mounting blocks; 14. a guide groove; 111. perforating holes; 112. a sliding groove; 2. a slide bar; 3. a guide device; 31. a guide sleeve; 4. a positioning assembly; 41. an inner snap ring; 42. mounting holes; 43. a through hole; 5. disassembling the parts; 51. a connecting rod; 52. a shackle; 6. accommodating grooves; 7. positioning a rod; 8. positioning a groove; 9. a guide rod.

Detailed Description

The present application is described in further detail below with reference to figures 1-10.

The embodiment of the application discloses an arm lifter.

Example 1:

referring to fig. 1 and 2, an arm lifting rod comprises a sliding rod 2, a base pipe 1 and a guide device 3, wherein the guide device 3 is arranged on the inner wall of the base pipe 1, the guide device 3 comprises a guide sleeve 31, the guide sleeve 31 is detachably arranged on the inner wall of the base pipe 1, and a positioning assembly 4 for fixing the guide sleeve 31 is arranged on the inner wall of the base pipe 1; the sliding rod 2 is arranged on the inner wall of the guide sleeve 31 in a sliding manner along the vertical direction. The top end of the base tube 1 is provided with a closed cover 11, the closed cover 11 seals the tube opening of the base tube 1, the bottom end of the closed cover 11 extends into the base tube 1, and one end of the closed cover 11 extending into the base tube 1 is connected to the inner wall of the base tube 1 through threads; the closing cap 11 is provided with a through hole 111 in a penetrating manner, and one end of the sliding rod 2 penetrates through the through hole 111 and extends into the base pipe 1. The base pipe 1 is provided at its bottom end with a mounting block 13.

When the arm lifting rod is installed, the guide sleeve 31 is installed on the inner wall of the base pipe 1, and the guide sleeve 31 is fixed by the positioning component 4. Then, one end of the closing cap 11 is inserted into the base pipe 1, and the closing cap 11 is rotated so that the end of the closing cap 11 inserted into the base pipe 1 is screwed to the inner wall of the base pipe 1. And then, one end of the sliding rod 2 penetrates through the through hole 111 and extends into the base pipe 1, the sliding rod 2 is arranged on the inner wall of the pipe of the guide sleeve 3 in a sliding mode along the vertical direction, and the guide sleeve 31 guides the sliding rod 2 to complete the installation of the arm lifting rod. The mounted arm lift bar can then be mounted to the designated instrument via mounting block 13.

Referring to fig. 2, 3 and 4, the inner walls of the tubes on both sides of the base tube 1 are provided with receiving grooves 6, the receiving groove 6 located above runs through the top end wall of the base tube 1, and the receiving groove 6 located below runs through the bottom end wall of the base tube 1. Guide sleeve 31 is the sleeve pipe that self-lubricating plastic made, and guide sleeve 31 is equipped with two, and two guide sleeve 31 one-to-one sets up on the cell wall of holding tank 13, and the bottom wall that is located the guide sleeve 31 of top and correspond the cell wall butt of holding tank 6 for the notch, the top wall that is located the guide sleeve 31 of below and correspond the cell wall butt of holding tank 6 for the notch. The groove wall of the accommodating groove 6 is provided with a clamping groove 12, the positioning component 4 comprises an inner clamping ring 41, the inner clamping ring 41 is clamped and embedded on the groove wall of the clamping groove 12, and the inner clamping ring 41 is abutted between the end wall of the guide sleeve 31 in the vertical direction and the groove wall of the clamping groove 12 in the vertical direction. The two ends of the inner snap ring 41 at the opening are provided with mounting holes 42 in a penetrating manner.

When the guide sleeve 31 is installed, the guide sleeve 31 is firstly put into the base tube 1, so that the guide sleeve 31 is abutted against the wall of the accommodating groove 6, and then the inner snap ring 41 is clamped and embedded in the snap groove 12; then, the two mounting holes 42 on the inner snap ring 41 are hooked by using pliers, and the two ends of the inner snap ring 41 are pulled, so that the inner snap ring 41 deforms and the two ends approach each other until the inner snap ring 41 abuts against the end wall of the guide sleeve 31 in the vertical direction and the groove wall of the clamping groove 12 in the vertical direction, and the guide sleeve 31 is fixed. After one end of the sliding rod 2 penetrates through the through hole 111 and extends into the base pipe 1, the sliding rod 2 is sequentially arranged in the two guide sleeves 31 in a penetrating manner, and the arm lifting rod is installed.

The implementation principle of an arm lifter in embodiment 1 of the application is as follows: when the arm lifter is installed, the guide sleeve 31 is first placed into the base pipe 1, one end wall of the guide sleeve 31 abuts against the wall of the accommodating groove 6, the guide sleeve 31 is limited on one side in the vertical direction, and the guide sleeve 31 is limited on the other side in the vertical direction by the inner snap ring 41, so that the guide sleeve 31 is fixed. Then installing a closing cap 11 at the top end of the base pipe 1 to seal the pipe orifice of the base pipe 1; the sliding rod 2 passes through the through hole 111 and is sequentially arranged in the two guide sleeves 31 in a penetrating way, and the sliding rod 2 is guided by the guide sleeves 31.

Because the guide sleeve 31 is a sleeve made of self-lubricating plastic, the friction force between the sliding rod 2 and the inner wall of the guide sleeve 31 is small in the lifting process, namely the sliding rod 2 is less worn, so that the condition that the lifting of the sliding rod 2 is influenced due to the wear is reduced, and the lifting stability of the arm lifting rod is improved.

Example 2:

referring to fig. 6, 7 and 10, an arc-shaped sliding groove 112 is formed in the upper surface of the closing cap 11 in a penetrating manner, a detaching piece 5 is arranged on the closing cap 11, the detaching piece 5 comprises a connecting rod 51 and a shackle 52, the connecting rod 51 is inserted into the groove wall of the sliding groove 112, the bottom end of the connecting rod 51 extends into the base pipe 1, the shackle 52 is fixedly connected to the bottom end of the connecting rod 51, through holes 43 are formed in the hole walls of the two mounting holes 42, and the shackle 52 is sleeved between the hole walls of the two through holes 43.

After the guiding sleeve 31 is fixed by the inner snap ring 41 matching with the groove wall of the receiving groove 6, the hook ring 52 is sleeved between the hole walls of the two through holes 43, then the closing cover 11 is rotated, and simultaneously the connecting rod 51 slides on the groove wall of the sliding groove 112 to close the pipe orifice at the top end of the base pipe 1. When the guide sleeve 31 needs to be taken out, the closing cover 11 is rotated, then the closing cover 11 is lifted upwards along the vertical direction, the connecting rod 51 is driven to move upwards, the inner snap ring 41 is pulled out of the clamping groove 12 through the hook ring 52, the limit of the inner snap ring 41 on the guide sleeve 31 in the vertical direction is cancelled, and then the guide sleeve 31 can be taken out.

Referring to fig. 5, 6 and 8, a guide groove 14 is formed on the top end wall of the base pipe 1, a guide rod 9 is fixedly connected to the sliding rod 2, and the guide rod 9 is arranged on the groove wall of the guide groove 14 in a sliding manner along the vertical direction.

When the sliding rod 2 passes through the closing cover 11, the guide rod 9 passes through the closing cover 11 and is inserted into the guide groove 14, and then the sliding rod 2 sequentially passes through the two guide sleeves 31, so that when the sliding rod 2 slides in the vertical direction in the guide sleeves 31, the guide rod 9 slides in the vertical direction in the guide groove 14, and further the sliding rod 2 is guided.

Referring to fig. 6 and 9, the two guide sleeves 31 are fixedly connected with positioning rods 7, the positioning rods 7 are rectangular rods, the groove walls of the accommodating grooves 6 corresponding to the notches are provided with positioning grooves 8, and the positioning rods 7 are inserted into the positioning grooves 8 in a one-to-one correspondence manner.

When the guide sleeve 31 is placed into the base pipe 1, the guide sleeve 31 is placed in the accommodating groove 6, the guide sleeve 31 abuts against the groove wall of the accommodating groove 6 opposite to the groove opening, and the guide sleeve 31 is limited on one side in the vertical direction; the positioning rods 7 are inserted into the positioning grooves 8 in a one-to-one correspondence manner to limit the rotation of the guide sleeve 31, and then the other side of the guide sleeve 31 in the vertical direction is limited by the inner snap ring 41 to fix the guide sleeve 31.

The implementation principle of an arm lifter in embodiment 2 of this application is: the guide sleeve 31 is fixed by the inner snap ring 41 matching with the groove wall of the receiving groove 6. The shackle 52 is then fitted into the two through holes 43 and the closure cap 11 is then fitted over the top end of the base pipe 1 to close the mouth of the top end of the base pipe 1. Finally, when the sliding rod 2 extends into the base pipe 1, the guide rod 9 is inserted into the guide groove 14, and the sliding rod 2 is further guided; and the positioning rods 7 are inserted into the positioning grooves 8 in a one-to-one correspondence manner, so that the rotation of the sliding rod 2 is limited, and the installation of the arm lifting rod is completed.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. An arm lifter which is characterized in that: including slide bar (2), parent tube (1) and guider (3), guider (3) set up on the inside pipe wall of parent tube (1), guider (3) include guide sleeve (31), guide sleeve (31) set up on the inside pipe wall of parent tube (1), be provided with locating component (4) that are used for fixed guide sleeve (31) on the inside pipe wall of parent tube (1), slide bar (2) along vertical direction and slide the setting on the inside pipe wall of guide sleeve (31).

2. An arm lifter according to claim 1, wherein: be provided with holding tank (6) on the inside pipe wall of parent tube (1), the axial end wall of parent tube (1) one end is run through in holding tank (6), guide sleeve (31) butt is on the cell wall of holding tank (6), be provided with draw-in groove (12) on the cell wall of holding tank (6), locating component (4) are including interior snap ring (41), the ring outer wall of interior snap ring (41) stretches into in draw-in groove (12), interior snap ring (41) support tightly between guide sleeve (31) along the cell wall of slide bar (2) direction of sliding end wall and draw-in groove (12) along slide bar (2) direction of sliding.

3. An arm lifter according to claim 1, wherein: and the outer wall of the base pipe (1) bottom is provided with an installation block (13).

4. An arm lifter according to claim 1, wherein: the guide sleeve (31) is a self-lubricating plastic sleeve.

5. An arm lifter according to claim 2, wherein: the top of parent tube (1) is provided with closing cap (11), run through on closing cap (11) and be provided with through-going hole (111), the one end of pole (2) that slides passes through-going hole (111) and stretches into in parent tube (1).

6. An arm lifter according to claim 5, wherein: the base pipe is characterized in that a guide groove (14) is formed in the top end wall of the base pipe (1), a guide rod (9) is arranged on the sliding rod (2), and the guide rod (9) penetrates through the closed cover (11) and is arranged on the groove wall of the guide groove (14) in a sliding mode in the vertical direction.

7. An arm lifter according to claim 2, wherein: the guide sleeve (31) is provided with a positioning rod (7), the positioning rod (7) is a rectangular rod, a positioning groove (8) is formed in the groove wall of the accommodating groove (6) in the sliding direction of the sliding rod (2), and the positioning rod (7) is inserted into the positioning groove (8).

8. The arm lifter of claim 5, wherein: run through on closing cap (11) and be provided with groove (112) that slides, be provided with on closing cap (11) and dismantle piece (5), dismantle piece (5) including connecting rod (51) and shackle (52), connecting rod (51) are pegged graft on the cell wall of groove (112) that slides, the one end of connecting rod (51) is stretched into in parent tube (1), shackle (52) set up the one end that stretches into parent tube (1) at connecting rod (51), the both ends of interior snap ring (41) opening part all are provided with mounting hole (42), be provided with through-hole (43) on the pore wall of mounting hole (42), shackle (52) cover is established between the pore wall of two through-holes (43).