CN219762864U - Wheel body locking structure, seat chassis and seat - Google Patents

Abstract

The utility model discloses a wheel body locking structure, a seat chassis and a seat, and relates to a rotation stopping grooved wheel, comprising: the anti-rotation groove wheel is provided with an anti-rotation groove, the surface of the anti-rotation groove wheel is provided with an anti-rotation groove wheel from inside to outside, and the outer end of the anti-rotation groove wheel is closed; the pedal key is provided with a connecting rod in a penetrating way, the end part of the connecting rod extends into the rotation stopping grooved pulley and moves along with the pedal key, and the connecting rod extends into the rotation stopping groove to lock the rotation stopping grooved pulley or is separated from the rotation stopping groove to release the locking state of the rotation stopping grooved pulley; according to the utility model, the anti-rotation groove is arranged on the inner side of the surface of the anti-rotation groove wheel, so that the outer end of the anti-rotation groove wheel is in a closed state, the problem that the locking state of the anti-rotation groove wheel is unstable due to the fact that the anti-rotation groove wheel accidentally winds band-shaped sundries in the rotation process can be avoided, the safety is improved, and the anti-rotation groove wheel has the advantages of simple integral structure, rapid assembly and simplicity in operation.

Description

Wheel body locking structure, seat chassis and seat

Technical Field

The utility model relates to the technical field of wheel body locking, in particular to a wheel body locking structure, a seat chassis and a seat.

Background

Many seats in the market at present set up the wheel in the bottom to this is convenient for remove, simultaneously, also can restrict the rotation of wheel through setting up locking structure, is convenient for restrict the removal of seat under specific state, especially to children's seat, can avoid the seat to remove at will, and then improves the security.

Publication No.: CN215423779U, entitled seat with pulley brake device, locks and unlocks the pulley through the cooperation of locating boss and constant head tank in this patent, but the constant head tank is in the bare state, if the pulley takes banded debris in the removal in-process, banded debris twines in constant head tank department, then probably influences the cooperation of locating boss and constant head tank, and then leads to the locking state of pulley unstable, has improved the potential safety hazard.

Disclosure of Invention

The utility model mainly aims to provide a wheel locking structure, a seat chassis and a seat, and aims to solve the existing technical problems.

In order to achieve the above object, the present utility model provides a wheel locking structure, which relates to a rotation stopping sheave, comprising: the anti-rotation groove wheel is provided with an anti-rotation groove, the surface of the anti-rotation groove wheel is provided with an anti-rotation groove wheel from inside to outside, and the outer end of the anti-rotation groove wheel is closed;

the pedal key is provided with a connecting rod in a penetrating manner, the end part of the connecting rod extends into the rotation stopping grooved pulley, the connecting rod moves along with the pedal key and extends into the rotation stopping groove to lock the rotation stopping grooved pulley or separate from the rotation stopping grooved pulley to release the locking state of the rotation stopping grooved pulley.

Further, the rotation stopping groove comprises an annular groove which can be used for the movement of the connecting rod and is arranged concentrically with the rotation stopping groove wheel, and a limiting groove which is communicated with the annular groove and used for limiting the movement of the connecting rod.

Further, a limiting plastic part is arranged below the pedal key, and a self-locking buckle is arranged on the limiting plastic part and used for locking the pedal key.

Further, the bottom of the pedal key is connected with the limiting plastic piece through an elastic piece and used for assisting the pedal key to reset.

Further, the pedal key comprises a key shell, a fixing clamping piece detachably connected with the bottom of the inner cavity of the key shell, and a rod hole for a connecting rod to pass through is formed in the surface of the key shell.

Further, the limit grooves are circumferentially equidistant and are formed in a plurality, and the connecting transition sections of the adjacent limit grooves are of cambered surface structures.

Further, the rotation stopping grooved wheel is installed through fixing pins arranged on two sides, and a rod groove for a connecting rod to move is formed in the fixing pin on one side, close to the pedal key.

The seat chassis comprises a tray body, wherein a rotation stopping wheel positioned at the front side and two universal wheels positioned at the rear side are respectively arranged at the bottom of the tray body, and the rotation stopping grooved wheels are controlled to be locked and unlocked through the wheel body locking structure.

A seat comprising a bench, a connecting bracket and a seat chassis as described above.

The beneficial effects of the utility model are as follows:

according to the utility model, the anti-rotation groove is arranged on the inner side of the surface of the anti-rotation groove wheel, so that the outer end of the anti-rotation groove wheel is in a closed state, the problem that the locking state of the anti-rotation groove wheel is unstable due to the fact that the anti-rotation groove wheel accidentally winds band-shaped sundries in the rotation process can be avoided, the safety is improved, and the anti-rotation groove wheel has the advantages of simple integral structure, rapid assembly and simplicity in operation.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a bottom view of the structure of FIG. 1 according to the present utility model;

FIG. 3 is a schematic diagram showing the cooperation of the connecting rod and the anti-rotation groove structure of the present utility model;

FIG. 4 is a schematic view of a rotation stopping groove structure of the present utility model;

FIG. 5 is a schematic elevational view of the structure of FIG. 1 in accordance with the present utility model;

FIG. 6 is a schematic diagram of a foot operated key structure according to the present utility model;

FIG. 7 is a schematic view of the seat pan structure of the present utility model;

FIG. 8 is a schematic view of a seat structure according to the present utility model;

fig. 9 is a schematic view of a conventional self-locking buckle structure according to the present utility model.

Reference numerals illustrate:

100. a rotation-stopping sheave; 1001. a rotation stopping groove; 10011. an annular groove; 10012. a limit groove; 101. a first fixing pin; 102. a second fixing pin; 200. a foot-operated key; 2001. a key case; 2002. a fixing clip; 201. limiting the plastic piece; 202. a connecting rod; 203. an elastic member; 204. self-locking buckle; 300. a tray body; 301. a universal wheel; 400. a stool; 401. and (5) connecting the brackets.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. Embodiments of the utility model and features of the embodiments may be combined with each other without conflict. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present utility model, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" as it appears throughout includes three parallel schemes, for example "A and/or B", including the A scheme, or the B scheme, or the scheme where A and B are satisfied simultaneously. In addition, "a plurality of" means two or more. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary that the combination of the technical solutions should be regarded as not existing when the combination of the technical solutions contradicts or cannot be realized on the basis of the realization of those skilled in the art.

Referring to fig. 1 and 2, a wheel locking structure of the present utility model relates to a rotation stopping sheave 100, comprising: the anti-rotation groove wheel 100 is provided with an anti-rotation groove 1001, the anti-rotation groove 1001 is formed from the surface of the anti-rotation groove wheel 100 to the outside, and the outer end is closed;

the pedal key 200 is further provided with a connecting rod 202 in a penetrating manner, the end part of the connecting rod 202 extends into the anti-rotation grooved wheel 100, the connecting rod 202 moves along with the pedal key 200, and the connecting rod extends into the anti-rotation groove 1001 to lock the anti-rotation grooved wheel 100 or is separated from the anti-rotation grooved wheel 100 to release the locking state of the anti-rotation grooved wheel 100.

In the use process, the pedal key 200 is stepped on by foot to enable the pedal key to move downwards, the connecting rod 202 is driven to move downwards synchronously, the connecting rod is separated from the rotation stopping groove 1001, the rotation stopping grooved wheel 100 is in a freely rotatable state, after the connecting rod 202 is reset, the rotation stopping grooved wheel 100 is locked again, and the operation is simple and quick.

The anti-rotation groove 1001 is arranged on the inner side of the surface of the anti-rotation groove wheel 100, so that the outer end of the anti-rotation groove wheel is in a closed state, the problem that the anti-rotation groove wheel 100 is unstable in locking state due to the fact that the anti-rotation groove wheel 100 is wound with band-shaped sundries accidentally in the rotation process can be avoided, safety is improved, and the anti-rotation groove wheel has the advantages of being simple in integral structure, rapid to assemble and simple to operate.

In one embodiment, referring to fig. 4, the anti-rotation groove 1001 includes an annular groove 10011 configured to move the connecting rod 202 and concentrically disposed with the anti-rotation sheave 100, and a limit groove 10012 communicating with the annular groove 10011 for limiting the movement of the connecting rod 202.

When the connecting rod 202 is positioned in the limit groove 10012, a locking effect is achieved on the rotation stopping sheave 100, and when the connecting rod 202 moves down into the annular groove 10011, the rotation stopping sheave 100 can rotate freely, and at the moment, the connecting rod 202 moves in the annular groove 10011;

preferably, the end of the connecting rod 202 is not in contact with the anti-rotation groove 1001, so that friction force is avoided between the end and the anti-rotation groove, and resistance to rotation of the anti-rotation groove wheel 100 in the unlocking state is increased, so that rotation of the anti-rotation groove wheel 100 is affected.

In an embodiment, referring to fig. 5, a limiting plastic member 201 is disposed below the foot button 200, and a self-locking buckle 204 is disposed on the limiting plastic member 201 for locking the foot button 200.

The self-locking buckle 204 is a prior art product and may be manufactured by Ganz He general parts limited. The shape is shown in fig. 9.

The self-locking buckle 204 can lock the pedal button 200 when the pedal button 200 is pressed, and after the pedal button 200 is pressed again, the locking state can be released, so that the pedal button can be reset, a user can operate the pedal button 200 at the same position in the operation process, the possibility of misoperation is avoided, and the operation convenience is improved.

In an embodiment, referring to fig. 5, the bottom of the foot button 200 is connected to the limiting plastic member 201 through the elastic member 203, so as to assist in resetting the foot button 200.

The elastic member 203 may employ a spring. By means of the arrangement, the auxiliary connecting rod 202 can be quickly reset during unlocking, and the effect of quick unlocking is achieved.

In an embodiment, referring to fig. 6, the foot button 200 includes a button housing 2001, a fixing clip 2002 detachably connected to the bottom of an inner cavity of the button housing 2001, and a rod hole for passing through the connecting rod 202 is formed on the surface of the button housing 2001.

Wherein, the fixing clip 2002 can be connected with the key shell 2001 by buckling or screw fixing, so as to facilitate the installation of the connecting rod 202 during assembly;

preferably, the fixing clip 2002 is provided with an integrally formed protrusion, and the connecting rod 202 is provided with a clip groove adapted to the protrusion, so that the connecting rod 202 is ensured to be in a fixed state, and the problem that the resistance is increased and the movement is affected due to the contact between the end of the connecting rod 202 and the anti-rotation sheave 100 in the rotation process is avoided.

In an embodiment, referring to fig. 3, a plurality of limit grooves 10012 are circumferentially equidistant, and the connecting transition sections of adjacent limit grooves 10012 are arc structures. By this arrangement, the rotation-preventing sheave 100 can be locked by the link 202 when rotated to any position, and the range of locking at any time can be enlarged.

In an embodiment, referring to fig. 1-3, the anti-rotation sheave 100 is installed by fixing pins disposed on two sides, and a bar groove for moving the connecting bar 202 is formed on the fixing pin on one side near the foot button 200.

Specifically, the fixing pin includes a first fixing pin 101 and a second fixing pin 102, which are separately disposed at two sides of the rotation-stopping sheave 100.

Referring to fig. 7, the seat chassis includes a tray 300, wherein the bottom of the tray 300 is respectively provided with a rotation stopping wheel 100 at the front side and two universal wheels 301 at the rear side, and the rotation stopping sheave 100 controls locking and unlocking through the wheel locking structure.

Referring to fig. 8, a seat includes a stool 400, a connection bracket 401, and a seat chassis as described above.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims (9)

1. A wheel locking structure, relating to a rotation-stopping sheave (100), characterized by comprising: the anti-rotation groove wheel (100) is provided with an anti-rotation groove (1001), the anti-rotation groove (1001) is formed in a manner that the surface of the anti-rotation groove wheel (100) is opened from inside to outside, and the outer end of the anti-rotation groove wheel is closed;

the anti-rotation device is characterized by further comprising a pedal key (200), wherein a connecting rod (202) is inserted through the pedal key, the end part of the connecting rod (202) extends into the anti-rotation groove wheel (100), the connecting rod (202) moves along with the pedal key (200) and extends into the anti-rotation groove (1001) to lock the anti-rotation groove wheel (100) or separate from the anti-rotation groove wheel (100) to release the locked state of the anti-rotation groove wheel (100).

2. A wheel locking structure as defined in claim 1, wherein: the rotation stopping groove (1001) comprises an annular groove (10011) which can be used for the movement of the connecting rod (202) and is arranged concentrically with the rotation stopping groove wheel (100), and a limiting groove (10012) which is communicated with the annular groove (10011) and used for limiting the movement of the connecting rod (202).

3. A wheel locking structure as defined in claim 1, wherein: a limiting plastic part (201) is arranged below the pedal key (200), and a self-locking buckle (204) is arranged on the limiting plastic part (201) and used for locking the pedal key (200).

4. A wheel locking structure as claimed in claim 3, wherein: the bottom of the pedal key (200) is connected with the limiting plastic piece (201) through the elastic piece (203) and is used for assisting the pedal key (200) to reset.

5. A wheel locking structure as defined in claim 1, wherein: the pedal key (200) comprises a key shell (2001), a fixing clamping piece (2002) detachably connected with the bottom of an inner cavity of the key shell (2001), and a rod hole for a connecting rod (202) to pass through is formed in the surface of the key shell (2001).

6. A wheel locking structure as claimed in claim 2, wherein: the limiting grooves (10012) are circumferentially equidistant, and the connecting transition sections of the adjacent limiting grooves (10012) are of cambered surface structures.

7. A wheel locking structure as defined in claim 1, wherein: the anti-rotation grooved wheel (100) is installed through fixing pins arranged on two sides, and a rod groove for a connecting rod (202) to move is formed in the fixing pin on one side close to the pedal key (200).

8. The utility model provides a seat chassis, includes disk body (300), disk body (300) bottom is equipped with respectively and is located the rotation grooved wheel (100) of front side and is located two universal wheels (301) of rear side, its characterized in that: the rotation-stopping sheave (100) is controlled to be locked and unlocked by the wheel body locking structure according to any one of claims 1 to 7.

9. A seat, characterized in that: comprising a bench (400), a connection bracket (401) and a seat pan as claimed in any of claims 1-8.