CN213216125U - Chair bottom roller device - Google Patents

Abstract

The utility model provides a chair bottom roller device, the device comprises a device body, the mounting groove has been seted up to the front end of device body, the mounting groove includes two cell lateral walls, fixedly connected with installation axle between two cell lateral walls, install the epaxial cover and be equipped with the commentaries on classics roller, the lower extreme fixedly connected with sleeve of commentaries on classics roller, it has the inserted bar to peg graft in, the one end fixedly connected with gyro wheel protection box of commentaries on classics roller is kept away from to the inserted bar, telescopic surface cover is equipped with the spring, the one end and the commentaries on classics roller fixed connection of spring, the other end and the gyro wheel protection box fixed connection of spring, both sides all are equipped with fixed ear about the lower extreme of gyro wheel protection box, it is connected with the gyro wheel to rotate between two fixed ears, the card hole has been seted up on two cell lateral walls, the equal fixedly connected with metal pole in both ends about the. The utility model has the advantages of convenient rolling and use.

Description

Chair bottom roller device

Technical Field

The utility model relates to a seat equipment technical field especially relates to a chair bottom roller device.

Background

Chairs are quite common in real life, and people can work or rest on the chairs. The position of the chair often needs to be changed due to the needs of work or life. Therefore, in order to facilitate the dragging of the chair, rollers are usually disposed at the bottom of the chair. However, when the chair is placed at a predetermined position, the chair may be unnecessarily moved due to the presence of the rollers, thereby causing inconvenience to the user.

SUMMERY OF THE UTILITY MODEL

To the not enough that exists among the prior art, the utility model provides a chair bottom roller device has solved the chair that exists among the prior art and has removed the set position after, because the existence of gyro wheel still can produce the problem that unnecessary removed.

The above technical purpose of the present invention can be achieved by the following technical solutions:

a roller device at the bottom of a chair comprises a device body, wherein the front end of the device body is provided with a mounting groove, the mounting groove comprises two groove side walls, a mounting shaft is fixedly connected between the two groove side walls, a rotating roller is sleeved on the mounting shaft, the lower end of the rotating roller is fixedly connected with a sleeve, an insertion rod is inserted in the sleeve, one end of the insertion rod, far away from the rotating roller, is fixedly connected with a roller protection box, the surface of the sleeve is sleeved with a spring, the spring is positioned between the rotating roller and the roller protection box, one end of the spring is fixedly connected with the rotating roller, the other end of the spring is fixedly connected with the roller protection box, the left part and the right part of the lower end of the roller protection box are respectively provided with a fixing lug, a roller is rotatably connected between the two fixing lugs, the two groove side walls are provided with clamping holes, and the left, when in use, the two metal rods are respectively clamped in the two clamping holes; the two groove body side walls are further provided with sliding holes used for retracting the idler wheels, the two sliding holes are respectively matched with the two metal rods, and the device body is further provided with a sliding mechanism used for taking the metal rods out of the sliding holes.

Through adopting above-mentioned technical scheme, when needs accomodate the gyro wheel, promote two metal poles with the hand, two metal poles remove downwards and break away from two card holes, and the spring is tensile state this moment. The roller is rotated to make two metal rods slide to two slide holes, and under the elastic action of the spring, the two metal rods are clamped in the two slide holes to fix the position of the roller and complete the storage of the roller. In this case, after the chair is moved to a predetermined position by the rollers, the rollers can be accommodated, so that the chair is prevented from being unnecessarily moved, and the chair is very convenient to use.

The utility model discloses further set up to: slide mechanism includes two slip hooks, two support arms and a back shaft, back shaft fixed connection is in the rear end of device body, two the spout has been seted up on the cell body lateral wall respectively, the slip hook is close to the one side of cell body lateral wall on fixedly connected with slide bar, the slide bar is used for sliding in the spout, the support arm is articulated with the slip hook, the support arm is located the top of back shaft, the lower extreme of support arm is inconsistent with the upper end of back shaft.

Through adopting above-mentioned technical scheme, when needs take out the gyro wheel, hold the support arm, press the support arm downwards, two support arms rotate, drive two slip hooks rebound, two slip hooks upwards promote two metal poles. At the moment, the two metal rods are held by hands to take out the roller, then the two metal rods are pulled to be clamped in the two clamping holes respectively, and under the elastic action of the spring, the position of the roller is fixed to realize the taking out of the roller.

The utility model discloses further set up to: a handle is connected between the two supporting arms, and an anti-skidding spongy cushion is wrapped on the surface of the handle.

Through adopting above-mentioned technical scheme, connect the handle between the support arm, can realize two support arms of simultaneous drive, convenient and fast, and at the surperficial parcel antiskid foam-rubber cushion of handle, comfort when can promoting the operation prevents to skid.

The utility model discloses further set up to: a magnet mounting hole is formed in the sliding hole, and an anti-falling magnet is fixed in the magnet mounting hole.

Through adopting above-mentioned technical scheme, when the gyro wheel was when accomodating the state, thereby the striking to handle or support arm probably made the slip hook upwards remove with the metal pole upwards promotion, makes the gyro wheel deviate from the slide opening easily. Consequently at the fixed anticreep magnet that sets up of magnet mounting hole, can adsorb the metal pole that is promoted, prevent that the metal pole is unexpected to deviate from in the slide opening.

The utility model discloses further set up to: the device comprises a device body and is characterized in that a friction pad is fixedly connected to the lower end of the device body, the friction pad is made of rubber, and anti-skid grains are carved on the lower end of the friction pad.

Through adopting above-mentioned technical scheme, when the gyro wheel was accomodate, the device body contacted with ground, was carved with the friction pad of anti-skidding line at the lower extreme fixed connection of device body, can prevent that the device body from skidding subaerial.

The utility model discloses further set up to: the upper end of the device body is fixedly connected with a screw rod.

Through adopting above-mentioned technical scheme, be connected with the lead screw in the upper end fixedly connected with of device body, the chair leg of the device body of being convenient for and chair is connected.

Drawings

Fig. 1 is a schematic structural diagram of the present embodiment.

In the above drawings: 1. the side wall of the groove body; 2. installing a shaft; 3. rotating the roller; 4. a sleeve; 5. inserting a rod; 6. a roller protection box; 7. a spring; 8. fixing the ear; 9. a roller; 10. a metal rod; 11. a clamping hole; 12. a slide hole; 13. an anti-drop magnet; 14. a sliding hook; 15. a support arm; 16. a support shaft; 17. a chute; 18. a handle; 19. a friction pad; 20. and a screw rod.

Detailed Description

The technical solution of the present invention will be further explained with reference to the accompanying drawings and embodiments.

Example (b):

a roller device at the bottom of a chair is shown in figure 1 and comprises a device body. The lower end of the device body is bonded with a friction pad 19, the friction pad 19 is made of rubber, anti-skid grains are carved on the lower end of the friction pad 19, and a screw rod 20 is welded on the upper end of the device body. The mounting groove has been seted up to the front end of device body, and the mounting groove includes two cell body lateral walls 1, and the welding has installation axle 2 between two cell body lateral walls 1. The cover is equipped with changes roller 3 on installation axle 2, changes roller 3 and rotates on installation axle 2, and the lower extreme welding of changeing roller 3 has sleeve 4, and it has inserted bar 5 to peg graft in the sleeve 4, and the one end fixedly connected with gyro wheel protection box 6 of changeing roller 3 is kept away from to inserted bar 5. The surface of the sleeve 4 is sleeved with a spring 7, the spring 7 is positioned between the rotary roller 3 and the roller protection box 6, one end of the spring 7 is welded with the rotary roller 3, and the other end of the spring 7 is welded with the roller protection box 6. The left and right parts of the lower end of the roller protection box 6 are integrally provided with fixing lugs 8, a roller 9 is rotatably connected between the two fixing lugs 8, and metal rods 10 are welded at the left and right ends of the roller protection box 6. The two groove body side walls 1 are provided with clamping holes 11, and the two metal rods 10 are respectively clamped in the two clamping holes 11. The two trough body side walls 1 are also provided with sliding holes 12 for retracting the rollers 9, and the two sliding holes 12 are respectively matched with the two metal rods 10. A magnet mounting hole is formed in the slide hole 12, and an anti-drop magnet 13 is fixed in the magnet mounting hole.

As shown in fig. 1, the apparatus body is further provided with a slide mechanism for taking out the metal rod 10 from the slide hole 12. The sliding mechanism comprises two sliding hooks 14, two supporting arms 15 and a supporting shaft 16, and the supporting shaft 16 is fixedly welded at the rear end of the device body. The two tank body side walls 1 are respectively provided with a sliding groove 17, one surface of the sliding hook 14 close to the tank body side wall 1 is welded with a sliding rod, and the sliding rod is used for sliding in the sliding groove 17. The supporting arm 15 is hinged to the sliding hook 14, the supporting arm 15 is located above the supporting shaft 16, and the lower end of the supporting arm 15 is abutted to the upper end of the supporting shaft 16. A handle 18 is connected between the two supporting arms 15, and the surface of the handle 18 is wrapped with an anti-slip sponge cushion.

This embodiment is used: when the roller 9 needs to be stored, the two metal rods 10 are pushed by hands, the two metal rods 10 move downwards to be separated from the two clamping holes 11, and the spring 7 is in a stretching state at the moment. The rotating roller 3 is rotated to enable the two metal rods 10 to slide into the two sliding holes 12, and under the elastic action of the spring 7, the two metal rods 10 are clamped in the two sliding holes 12, so that the position of the roller 9 is fixed, and the roller 9 is accommodated. In this case, after the chair is moved to a predetermined position by the rollers 9, the rollers 9 can be accommodated, so that the chair is prevented from being unnecessarily moved, and the chair is very convenient to use. When the roller 9 needs to be taken out, the handle 18 is pressed downwards, the two supporting arms 15 rotate, the two sliding hooks 14 are driven to move upwards, and the two sliding hooks 14 push the two metal rods 10 upwards. At this time, the two metal rods 10 are held by hand to take out the roller 9, then the two metal rods 10 are pulled to enable the two metal rods 10 to be clamped in the two clamping holes 11 respectively, and under the elastic action of the spring 7, the position of the roller 9 is fixed, so that the roller 9 is taken out.

Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.

Claims (6)

1. The utility model provides a chair bottom roller device, includes the device body, its characterized in that: the mounting groove has been seted up to the front end of device body, the mounting groove includes two cell body lateral walls (1), two fixedly connected with installation axle (2) between cell body lateral wall (1), the cover is equipped with changes roller (3) on installation axle (2), the lower extreme fixedly connected with sleeve (4) of changeing roller (3), it has inserted bar (5) to peg graft in sleeve (4), the one end fixedly connected with gyro wheel protection box (6) of changeing roller (3) is kept away from to inserted bar (5), the surface cover of sleeve (4) is equipped with spring (7), spring (7) are located between changeing roller (3) and gyro wheel protection box (6), the one end of spring (7) and changeing roller (3) fixed connection, the other end and gyro wheel protection box (6) fixed connection of spring (7), the lower extreme left and right sides two parts of gyro wheel protection box (6) all are equipped with fixed ear (8), the idler wheels (9) are rotatably connected between the two fixing lugs (8), the lower ends of the two groove body side walls (1) are provided with clamping holes (11), the left end and the right end of the idler wheel protection box (6) are fixedly connected with metal rods (10), and the two metal rods (10) are respectively clamped in the two clamping holes (11) when the rolling wheel protection box is used; the two groove body side walls (1) are further provided with sliding holes (12) used for retracting the rollers (9), the two sliding holes (12) are respectively matched with the two metal rods (10), and the device body is further provided with a sliding mechanism used for taking the metal rods (10) out of the sliding holes (12).

2. The bottom roller assembly of a chair as claimed in claim 1, wherein: slide mechanism includes two slip hooks (14), two support arms (15) and a back shaft (16), back shaft (16) fixed connection is in the rear end of device body, two spout (17) have been seted up on cell body lateral wall (1) respectively, fixedly connected with slide bar on the one side that slip hook (14) are close to cell body lateral wall (1), the slide bar is used for sliding in spout (17), support arm (15) are articulated with slip hook (14), support arm (15) are located the top of back shaft (16), the lower extreme of support arm (15) is inconsistent with the upper end of back shaft (16).

3. The chair bottom roller assembly of claim 2, wherein: a handle (18) is connected between the two supporting arms (15), and the surface of the handle (18) is wrapped with an anti-slip sponge cushion.

4. The bottom roller assembly of a chair as claimed in claim 3, wherein: a magnet mounting hole is formed in the sliding hole (12), and an anti-falling magnet (13) is fixed in the magnet mounting hole.

5. The chair bottom roller assembly of claim 4, wherein: the device is characterized in that a friction pad (19) is fixedly connected to the lower end of the device body, the friction pad (19) is made of rubber, and anti-skid grains are carved on the lower end of the friction pad (19).

6. The chair bottom roller assembly of claim 5, wherein: the upper end of the device body is fixedly connected with a screw rod (20).

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