CN201332853Y

CN201332853Y - Regulating device for rotation of chair

Info

Publication number: CN201332853Y
Application number: CNU2008202295125U
Authority: CN
Inventors: 洪金隆
Original assignee: SHANGHONGLIRONG CHAIR INDUSTRY Co Ltd XIAMEN
Current assignee: SHANGHONGLIRONG CHAIR INDUSTRY Co Ltd XIAMEN
Priority date: 2008-12-19
Filing date: 2008-12-19
Publication date: 2009-10-28
Anticipated expiration: 2018-12-19

Abstract

The utility model discloses a regulating device for the rotation of a chair, which comprises a lower rotating plate connected with a base, an upper rotating plate connected with the chair, and a locating piece. The upper surface of the lower rotating plate contacts the lower surface of the upper rotating plate, the lower rotating plate and the upper rotating plate are respectively provided with a sleeve and a bushing into which are mutually inserted, and the inside diameter of the sleeve is slightly larger than the outside diameter of the bushing; a bearing is installed at the contact site of the lower rotating plate and the upper rotating plate; and the locating piece is installed on the sleeve, and the inner end of the locating piece is propped with the wall of the bushing. The regulating device can achieve stepless regulation and be randomly positioned, and is convenient and simple for use.

Description

A kind of seat rotation adjustment device

Technical field

The utility model relates to seat rotation technique field, and is special relevant with the stepless rotation adjustment device of a kind of seat.

Background technology

In the prior art, the adjusting device that is applicable to seat rotation as depicted in figs. 1 and 2, the top rotary table 20 that comprises the lower rotary table 10 that joins with base aerial ladder 40, joins with seat and be contained in pin 30 on lower rotary table 10 holes 101 has several and pin 30 position corresponding positioning hole 201 on top rotary table 20.During use, the position that pin 30 is extracted locating hole 201 rotates to required angle with lower rotary table 10 and top rotary table 20 more earlier, then pin 30 is inserted corresponding locating hole 201, realizes the rotation location.The identifier that locating hole 201 is generally arranged in the device outside.

This structure is because the angle of rotation is subjected to the number of locating hole 201 and the position is set and limits, so be a kind ofly to have level to regulate; And in use can produce the desalination and the fuzzy problem of identifier, thereby cause the trouble of location, influence result of use.

The inventor improves at the defective that above-mentioned locating hole rotation adjustment device exists, and makes great efforts a kind of stepless regulator easy to use of research and development, and this case is arisen spontaneously.

The utility model content

The purpose of this utility model is to provide a kind of seat rotation adjustment device, to realize step-less adjustment.

To achieve these goals, solution of the present utility model is:

A kind of seat rotation adjustment device comprises a lower rotary table that joins with base, one and the seat top rotary table and the positioning piece of joining; The upper surface of lower rotary table contacts with the top rotary table lower surface, and lower rotary table and top rotary table have sleeve and the sleeve pipe that interts mutually respectively, and the internal diameter of sleeve is slightly larger than the external diameter of sleeve pipe; Contact site at lower rotary table and top rotary table is equipped with bearing; Keeper is installed on the sleeve, and keeper is inner inconsistent with casing wall.

Above-mentioned bearing is installed in the upper surface of lower rotary table and the contact site of top rotary table lower surface.

Above-mentioned bearing is installed in the contact site of sleeve and sleeve pipe.

The inner that above-mentioned keeper and sleeve pipe are conflicted has Improved mat.

Scribble high-abrasive material on the casing wall of said apparatus.

Above-mentioned keeper is a screw, offers the screw that matches on the sleeve wall.

Above-mentioned keeper is the friction lever that is articulated on the sleeve, offers the loose slot that rotates for friction lever on the sleeve wall.

After adopting said structure, when the utility model uses, unscrew keeper earlier, make the inner releasing of keeper being tight against to casing wall, this moment, lower rotary table can rotate relatively with top rotary table, again lower rotary table and top rotary table was rotated to required angle, screwed keeper then, make keeper the inner be closely against casing wall again, at this moment, keeper imposes on the pressure of casing wall, and the counterrotating frictional force of lower rotary table and top rotary table is increased, stop that lower rotary table is relative with top rotary table to be rotated, realize the rotation location.

The utility model compared with prior art, keeper can be positioned on arbitrary position of casing wall, based on doing 360 degree rotations between sleeve and the sleeve pipe, thereby realize that seat and base carry out 360 degree step-less adjustment, and can arbitrarily locate, easy to use succinct, overcome the defective of prior art.

In addition, but the life-span that adds the extension fixture use of high-abrasive material and Improved mat, the minimizing cost.

Description of drawings

Fig. 1 is the structure cut-away view of existing seat rotation adjustment device;

Fig. 2 is the lower rotary table scheme of installation of existing seat rotation adjustment device;

Fig. 3 is the structure cut-away view of a kind of embodiment of the utility model seat rotation adjustment device;

Fig. 4 is the partial enlarged drawing of Fig. 3;

Fig. 5 is the structure cut-away view of the another kind of embodiment of the utility model seat rotation adjustment device;

Fig. 6 is the partial enlarged drawing of Fig. 5.

The specific embodiment

As shown in Figure 3, be the preferred embodiment that the utility model discloses, a kind of seat rotation adjustment device comprises a lower rotary table that joins with the base aerial ladder 1, one and the seat top rotary table 2 and the screw 3 (keeper) that join.

Wherein, the structure of lower rotary table 1 and the structure and the prior art of joining with base are identical, also are mounted on the aerial ladder, and as shown in Figure 2, lower rotary table 1 has sleeve, offer a screw 11 radially on the wall of sleeve.The upper surface of lower rotary table 1 has been installed bearing.

Top rotary table 2 has sleeve pipe, and the external diameter of sleeve pipe is slightly less than the internal diameter of sleeve, and sleeve pipe can be interted in sleeve, and top rotary table 2 utilizes bearing to realize relatively rotating lower rotary table 1.Bearing also can be installed in the contact site of sleeve and sleeve pipe, realizes relatively rotating of top rotary table 2 and lower rotary table 1 equally.

Screw 3 is screwed on the screw 11, and the inner is tight against on casing wall.

In order to increase the frictional force between screw 3 the inners and the casing wall, and avoid damaging top rotary table 2 because of frictional force strengthens, the utility model also scribbles one deck high-abrasive material on casing wall or Improved mat 22 is equipped with in screw 3 the inners, as shown in Figure 4.

Present embodiment in use, lower rotary table 1 can screw screw 3 then because of needs rotate to unspecified angle, is closely conflicted in screw 3 or Improved mat 22 and casing wall or high-abrasive material surface, produces a very big stiction, thereby realizes locating.

Present embodiment compared with prior art, screw 3 can be positioned on arbitrary position of casing wall, is not subjected to angle limits, realizes that seat and base carry out 360 degree step-less adjustment, can arbitrarily locate, and also need not to determine the position according to identifier, in use makes things convenient for, succinctly.In addition, high-abrasive material or Improved mat 22 are arranged, prolonged the service life of device, reduce cost, and can reach good locating effect at casing wall.

Keeper in the utility model also can adopt friction lever 31 to realize the friction location.As shown in Figure 5 and Figure 6, offer a loose slot 12 on the sleeve of lower rotary table 1, have a rotating shaft 32 in the loose slot 12, friction lever 31 is articulated in the rotating shaft 32, and is that pivot rotates with rotating shaft 32.When friction lever 31 turns to the radial position of sleeve, closely conflicting in friction lever 31 or Improved mat 22 and casing wall or high-abrasive material surface, produces a very big stiction, thereby realize locating.After friction lever 31 rotates an angle, remove the location, conveniently be rotated adjusting.

Claims

1, a kind of seat rotation adjustment device is characterized in that: comprise a lower rotary table that joins with base, one and the seat top rotary table and the positioning piece of joining; The upper surface of lower rotary table contacts with the top rotary table lower surface, and lower rotary table and top rotary table have sleeve and the sleeve pipe that interts mutually respectively, and the internal diameter of sleeve is slightly larger than the external diameter of sleeve pipe; Contact site at lower rotary table and top rotary table is equipped with bearing; Keeper is installed on the sleeve, and keeper is inner inconsistent with casing wall.

2, a kind of seat rotation adjustment device as claimed in claim 1 is characterized in that: above-mentioned bearing is installed in the upper surface of lower rotary table and the contact site of top rotary table lower surface.

3, a kind of seat rotation adjustment device as claimed in claim 1, it is characterized in that: above-mentioned bearing is installed in the contact site of sleeve and sleeve pipe.

4, a kind of seat rotation adjustment device as claimed in claim 1 is characterized in that: the inner that above-mentioned keeper and sleeve pipe are conflicted has Improved mat.

5, a kind of seat rotation adjustment device as claimed in claim 1 is characterized in that: scribble high-abrasive material on the casing wall of said apparatus.

6, a kind of seat rotation adjustment device as claimed in claim 1, it is characterized in that: above-mentioned keeper is a screw, offers the screw that matches on the sleeve wall.

7, a kind of seat rotation adjustment device as claimed in claim 1, it is characterized in that: above-mentioned keeper is articulated in the friction lever on the sleeve, offers the loose slot that rotates for friction lever on the sleeve wall.