CN201007305Y - Telescopic adjusting positioning device - Google Patents

Abstract

A telescopic adjusting and positioning device comprises an outer sleeve, a telescopic pipe which is accommodated in the outer sleeve and is provided with a plurality of axial positioning holes, a sleeve seat which is sleeved outside the junction of the outer sleeve and the outer surface of the telescopic pipe, a bolt which can pass through the sleeve seat and is fixed in the positioning hole of the telescopic pipe, and an operating part which is assembled on the sleeve seat and can drive the bolt to move towards the positioning hole; the end of the bolt is provided with an inclined guide surface and is accommodated in the preset through hole of the sleeve seat, the outer side surface of the bolt is provided with a flange, a spring is sleeved at one end of the bolt with the inclined guide surface and is abutted against the flange, and the operating piece is provided with a guide rail which can drive the bolt to move. Before the operating part is not started, the inclined guide surface of the bolt is controlled to be at a position tangent to the surface of the positioning hole, and when the telescopic pipe is pulled to find the height position, a user can conveniently find the position of the proper positioning hole and then lock the position by virtue of the telescopic effect generated by the elasticity of the spring of the bolt.

Description

Telescopic adjustment positioning device

technical field

The utility model relates to a telescopic adjustment and positioning device, in particular to a telescopic adjustment and positioning device which can facilitate position adjustment and convenient positioning of a loaded object.

Background technique

In order to meet the needs of users, some objects can be designed to be adjusted in different positions according to the needs of users in different states. For example, the adjustment of the height of the seat, the back of the chair or the table board can allow the user to use it in the most suitable position.

As for the chair seat, chair back or table board that can be adjusted in height, the problem that must be considered is how to fix the adjusted object. As shown in China Taiwan Patent Announcement No. 351100, it discloses a computer table frame with height and telescopic adjustment, wherein the main body of the table board is mainly supported by an air pressure rod and a support rod, and a telescopic rod is embedded in the support rod. The telescopic tube supports a shelf board, and a plurality of positioning holes are opened on one side of the telescopic tube for screw fixing; The mechanism can fix the table board on the support rod in a stepless manner, so that the height of the table board can be changed; as for the shelf board, when the user thinks it is an appropriate height, the stud can also pass through the predetermined positioning hole on the telescopic tube and resist it. On the other inner wall surface of the telescopic tube, the shelf board can be positioned.

However, with the above-mentioned height adjustment positioning design, although the table board can be adjusted steplessly, it is not easy to be positioned, especially when the table board carries heavy objects (such as carrying peripheral equipment of a personal computer), there are air pressure rods and support rods The support is still easy to loose (especially when the sleeve is pressed for a long time to cause its elastic fatigue) and it cannot be positioned accurately. Furthermore, if the general positioning hole is used for the same frame plate to pass through the positioning hole for positioning through a stud or a latch, then the stud or latch is difficult to find the position of the positioning hole during operation.

Therefore, in view of the above problems, it is necessary to propose a new telescopic adjustment and positioning device to make up for its shortcomings.

Utility model content

The purpose of the utility model is to provide a telescopic adjustment and positioning device, which can make the bolt easy to find the position of the next target positioning hole of the telescopic tube and lock it.

The purpose of this utility model is achieved through the following technical solutions: a telescopic adjustment and positioning device, comprising: an outer sleeve, a telescopic tube accommodated in the aforementioned outer sleeve and provided with a plurality of positioning holes, a ring sleeved on the aforementioned outer sleeve The outer sleeve at the junction of the tube and the outer surface of the telescopic tube, a pin that can pass through the sleeve and be fixed in the positioning hole of the telescopic tube, and an operation that is assembled on the aforementioned sleeve and can drive the aforementioned pin to move toward the positioning hole pieces. Wherein, the above-mentioned operating part is provided with a guide rail with an inclined surface to drive the movement of the above-mentioned bolt, and the end of the above-mentioned bolt is provided with an inclined guide surface and is accommodated in the predetermined perforation of the aforementioned sleeve, and the outer surface of the bolt is provided with a flange, a The spring is sleeved on one end of the bolt with the inclined guide surface and abuts against the flange, while the other spring is installed at the other end of the flange and can abut against the guide rail of the aforementioned operating member.

Compared with the prior art, the effect of the utility model is remarkable: the telescopic adjustment and positioning device of the utility model adopts the design of the inclined guide surface at the end of the bolt and the elastic positioning design of scalability, and before the operating part is activated, the bolt The inclined guide surface of the pin is controlled to be tangent to the surface of the positioning hole of the telescopic tube. When the load pulls the telescopic tube to find the height position adjustment, the inclined guide surface through the pin is easy to slide out of the positioning hole and the elasticity of the spring produces The retractability effect can facilitate the user to find the position of the appropriate positioning hole and then lock it.

Description of drawings

Fig. 1 is a three-dimensional exploded view of the telescopic adjustment and positioning device of the present invention.

Fig. 2 is a combined schematic diagram of the telescopic adjustment and positioning device of the present invention.

Fig. 3 is a schematic partial cross-sectional view of the telescopic adjustment and positioning device of the present invention before it is started.

Fig. 4 is a schematic partial cross-sectional view of the telescopic adjustment and positioning device of the present invention after locking.

Fig. 5 is a schematic diagram of an embodiment of the telescopic adjustment and positioning device of the present invention applied on a table.

Fig. 6 is a schematic diagram of the operation of the telescopic adjustment and positioning device of the embodiment shown in Fig. 5 during adjustment.

Fig. 7 is a partial cross-sectional schematic diagram of the combined telescopic adjustment and positioning device of the present invention, which shows the combination of the outer sleeve and the telescopic tube.

FIG. 8 is a partial perspective view of the embodiment shown in FIG. 7 .

Description of main component symbols

Cover seat 1 rib 11

Sleeve 1a Collar 1b

Accommodating part 12 Annular convex part 121

Guide groove 122 Slot 123

Positioning hole 124 Perforation 125

Operating parts 2

Guide rail 20 inclined plane 21

The first pressing surface 211 The second pressing surface 212

terminal part 22 screw 23

Stud 24 Screw hole 25

Pin 3 Flange 31

Pin inclined guide surface 3a

First Pillar 33 Second Pillar 32

First spring 4 Second spring 5

Stopper 6 Telescopic tube 7

Positioning hole 71 Resisting piece 72

Fixed foot 721 Resisting surface 722

Recess 723 Groove 724

Resisting hole 73 Outer sleeve 8

table board 9

Air pressure rod 91 Start switch 92

Detailed ways

Please refer to Fig. 1 and Fig. 2, the utility model provides a telescopic adjustment positioning device, comprising: an outer sleeve 8, a telescopic tube 7 accommodated in the aforementioned outer sleeve 8 and provided with a plurality of positioning holes 71, A sleeve 1 looped on the outside of the junction of the aforementioned outer sleeve 8 and the outer surface of the telescopic tube 7, a latch 3 that can pass through the sleeve 1 and the outer sleeve 8 to be fixed in the positioning hole 71 of the telescopic tube 7, respectively The first spring 4 and the second spring 5 installed at both ends of the latch 3 and the operating member 2 assembled on the aforementioned sleeve 1 and capable of driving the aforementioned latch 3 to move toward the positioning hole 71 and lock it in position.

The sleeve 1 is a hollow tubular body, which can have a sleeve body 1a and a sleeve ring 1b as shown in Figure 1, and the sleeve ring 1b is exposed outside by passing the sleeve body 1a into the aforementioned outer sleeve 8, or a It is formed integrally with the outer sleeve 8 at the end of the outer sleeve 8 . Ribs 11 can be provided on the inner surface of the sleeve 1, which can reduce the friction of slipping when the ring sleeve is on the surface of the telescopic tube 7. One side of the sleeve 1 is provided with an accommodating portion 12, the accommodating portion 12 is concavely provided with an annular convex portion 121, and a positioning hole 124 is provided in the convex portion 121 to fix the aforementioned operating member 2, and in the convex portion 121 A guide groove 122 is formed on the periphery to be compatible with a slot 123. The bottom surface of the slot 123 is provided with a perforation 125 with a covering area smaller than that of the slot 123, so that it can communicate with the positioning hole 71 of the telescopic tube 7 and pass through the slot. 123 is used for accommodating the pin 3 and the first and second springs 4 and 5 and communicates with the guide groove 122 , and a stopper 6 is arranged on the guide groove 122 at the opposite end of the slot 123 .

The operating part 2 is provided with a bolt 24 on its inner surface, and the bolt 24 has a screw hole 25, and a screw 23 can pass through the screw hole 25 of the bolt 24 to set the operating part 2 in the housing of the sleeve 1. In the positioning hole 124 of the part 12; and a protruding guide rail 20 is arranged on the side of the bolt 24, the surface of the guide rail 20 is a slope 21, and its two ends are respectively connected to a first pressing surface 211 at a lower position and a lower one. The second pressing surface 212 at a high position, the first and second pressing surfaces 211 , 212 are both flat, and a terminal portion 22 is formed at the end of the first pressing surface 211 .

The latch 3 has an inclined guide surface 3a at one end, and a flange 31 is provided on the outer surface of the latch 3, and the latch 3 is separated into a first column portion 33 having an inclined guide surface 3a and a second column at the opposite end by the flange 31. The column portion 32 , and the first spring 4 and the second spring 5 are sleeved on the first column portion 33 and the second column portion 32 respectively. Moreover, the diameter of the bolt 3 is smaller than the diameter of the through hole 125 of the socket 1 and the diameter of the positioning hole 71 of the telescopic tube 7 , while the diameter of the first spring 4 is larger than the diameter of the through hole 125 .

Telescopic tube 7, one end of which is used to be sleeved on outer sleeve 8, and the other end is used to connect carrying objects, such as table board 9 shown in Fig. 5 and Fig. 6; please refer to Fig. 7 and shown in Fig. The abutment hole 73, and an elastic abutment member 72 is installed on the abutment hole 73, which can abut against the outer sleeve 8 during assembly, so that the telescopic tube 7 is not easy to shake. Wherein said abutting member 72 has two fixed feet 721, and a concave portion 723 is formed between the two fixed feet 721, so that the elastic deformation of the fixed feet 721 is assembled into the abutment hole 73; The surface is an arc-shaped resisting surface 722 , and a groove 724 is defined in the middle of the resisting surface 722 .

When assembling, reference can be made to Fig. 3 and Fig. 4 at the same time. First, the latch 3 equipped with the first and second springs 4, 5 is accommodated in the slot 123, and at this time the first spring 4 abuts against the aforementioned flange 31. and the bottom surface of the slot 123, and the latch 3 has an inclined guide surface 3a and the end is controlled at a tangent to the surface of the positioning hole 71 of the telescopic tube 7; the second spring 5 is installed at the other end of the flange 31, and can It abuts against the guide rail 20 of the operating element 2 .

Before the operating part 2 is activated, the first pressing surface 211 of the operating part 2 abuts against the second spring 5, and at this time, one end of the inclined guide surface 3a of the latch 3 protrudes slightly in the positioning hole 71, that is, the inclined guide The surface 3a is controlled to be tangent to the surface of the positioning hole 71; when it is desired to lock, the operating member 2 is rotated, at this time the guide rail 20 can move in the aforementioned guide groove 122, press the second spring 5 with the inclined surface 21, and Press the second spring 5 from the first pressing surface 211 to the second pressing surface 212 along the slope 21 to make it deform, and the drive pin 3 is inserted into the positioning hole 71 to be locked. Part 6 is offset to make this rotation action reach the limit.

When the operator has not yet decided to position the carrying object (table 9 as shown in Figures 5 and 6) at that height before starting, if he wants to find the next positioning hole 71, he only needs to pull the table 9 to draw the telescopic tube 7. Utilize the elastic restoring force of the first spring 4 to generate the scalability of the bolt 3, and the inclined guide surface 3a of the bolt 3 is easy to slide out of the design of the positioning hole 71, so that it falls into the next positioning hole 71 and then pops out It is convenient for the user to find the position of the target positioning hole and then lock it, without turning the operating member 2 blindly.

Please refer to Figure 5 and Figure 6, which is a schematic diagram of an embodiment of the telescopic adjustment and positioning device of the present invention applied on the table, wherein the main body of the table 9 is mainly through an air pressure rod 91 and the telescopic adjustment and positioning of the present invention. The device is supported; in this way, when the start switch 92 is activated, the table board 9 is adjusted in height by the action of the air pressure rod 91, and the height of the table board 9 is adjusted through the positioning adjustment of the telescopic adjustment positioning device of the present utility model. variable and easy to locate.

But the above descriptions are only preferred embodiments of the present utility model, and the scope of the present utility model is not limited to the above-mentioned embodiments. Those who are familiar with the techniques of the utility model can make equivalent modifications or changes according to the spirit of the utility model , should be covered within the scope of protection of the claims.

Claims (10)

1. A telescopic adjustment and positioning device, characterized in that it comprises: a casing; A telescopic tube, at least one end of which is accommodated in the aforementioned outer tube, and a plurality of axially arranged positioning holes are opened on one side; A set of seats, the seat is a hollow tube body, which is looped on the outside of the junction between the outer sleeve and the outer surface of the telescopic tube, and the seat is provided with a housing part on one side, and the housing part is provided with a plug slot, the bottom of the slot is provided with a perforation with a covering area smaller than that of the slot; A pin whose diameter and width are smaller than the aforementioned through hole and positioning hole; An operating part is assembled on the accommodating part of the aforementioned sleeve; Wherein, the above-mentioned bolt is accommodated in the slot and the through hole of the socket, and a flange is provided on its outer surface, and a first spring is sleeved on one end of the bolt and abuts between the flange and the bottom surface of the slot, and the first The diameter width of a spring is larger than that of the perforation, and the above-mentioned operating part is provided with a guide rail for driving the bolt to move towards the perforation and the positioning hole of the telescopic tube. 2 . The telescopic adjustment and positioning device according to claim 1 , wherein the pin has an inclined guide surface at the end where the first spring is installed. 3 . 3. The telescopic adjustment and positioning device according to claim 2, wherein a second spring is installed on the other end of the flange on which the first spring is installed on the bolt, and the second spring is connected to the aforesaid operating member. The guide rails touch each other. 4. The telescopic adjustment and positioning device according to claim 3, wherein the surface where the guide rail of the operating member abuts against the second spring is an inclined plane, and the two ends of the inclined plane are respectively connected to a first pressing surface at a lower position And the second pressing surface at a higher position. 5. The telescopic adjustment and positioning device as claimed in claim 4, characterized in that, an annular convex portion is provided in the accommodating portion of the sleeve, and a positioning hole is provided in the convex portion to fix the aforementioned operating member, and in the convex portion A guide groove is formed on the periphery, and the aforementioned slot communicates with the aforementioned guide groove, and a stopper is arranged at a predetermined position of the guide groove. 6. The telescopic adjustment and positioning device according to claim 5, wherein the operating member is provided with a bolt, the bolt has a screw hole, and the operating member is assembled on the screw hole through the screw hole of the bolt. In the positioning hole of the accommodating part of the sleeve. 7. The telescopic adjustment and positioning device according to claim 6, wherein the operating member has a terminal portion at the end of the first pressing surface of the guide rail. 8 . The telescopic adjustment and positioning device according to claim 1 , further comprising an elastic resisting member, the resisting member is assembled on the telescopic tube and abuts against the outer tube. 9. The telescopic adjustment and positioning device according to claim 8, wherein the abutting member has two fixed feet, a recess is formed between the two fixed feet, and the telescopic tube is opened with respect to the fixed feet of the aforesaid abutting member. The supporting hole is used to accommodate two fixing feet. 10 . The telescopic adjustment and positioning device according to claim 9 , wherein the contact surface of the abutting member and the outer casing is an arc-shaped abutting surface, and grooves are provided on the abutting surface. 11 .

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