CN211582312U - Adjustable press-stop chair wheel and chair with same - Google Patents

Abstract

The utility model relates to a seat accessory field especially relates to an adjustable pressure ends chair wheel, and has seat of this chair wheel. An adjustable press-stop chair wheel comprises a chair wheel main body and a tire component positioned on the chair wheel main body through a wheel shaft; the chair wheel main body is provided with a pressure stop part which can move relative to the tire assembly; in a natural state, the tire assembly can rotate relative to the chair wheel main body; the pressure stop part can contact the ground or stop pressing the tire assembly in a pressed state; the chair wheel main body is provided with a pressure stop switch assembly for limiting the movement of the pressure stop portion relative to the tire assembly; when the pressing switch assembly limits the pressing part to move relative to the tire assembly, the tire assembly can rotate relative to the wheel main body in a pressed state. The chair wheel is provided with a pressure stop switch component to adjust and control the gravity pressure stop function of the chair wheel; the chair wheel can be switched between the gravity press-stopping wheel and the common chair wheel, and the applicability of the chair wheel is improved.

Description

Adjustable press-stop chair wheel and chair with same

Technical Field

The utility model relates to a seat accessory field especially relates to an adjustable pressure ends chair wheel, and has seat of this chair wheel.

Background

The swivel chair has the advantages of large moving range, convenience in carrying and the like due to the fact that the chair wheels are arranged at the bottom of the swivel chair, and is popular with users in the market. However, the flexibility of the swivel chair also causes some inconvenience. In order to limit the occurrence of slippage during riding, a gravity wheel (also known as a pinch roller) is used in the market. The chair wheel has a gravity pressing function, and particularly, the chair wheel can rotate freely only under the self weight of the chair; when the pressure is greater than a certain value (generally speaking, in the sitting condition), the wheel is restrained and can not rotate.

The pulley structure capable of automatically braking and releasing the brake, which is disclosed in the Chinese utility model patent document with the publication number of CN205513452U, comprises a pulley seat, an elastic body, a shaft seat, a wheel shaft and two wheel bodies; the axle seat is internally and longitudinally provided with an elastomer, the axle seat is arranged in the assembling space of the wheel seat, the elastomer is positioned between the wheel seat and the axle seat, the wheel axle transversely penetrates through the wheel seat and the axle seat, the wheel body is assembled at the two ends of the wheel axle, and the longitudinal aperture of a through hole for the wheel axle to penetrate through on the wheel seat is larger than the diameter of the wheel axle, so that the wheel body has a moving space for vertical displacement; the two side surfaces of the wheel seat are convexly provided with convex blocks, and the two convex blocks correspond to the inner edge of the wheel surface of the wheel body; the utility model discloses when not bearing gravity, the elasticity of elastomer pushes away the wheel seat upwards, and the wheel seat is located the rising position, and lug and the conflict friction of wheel face inner edge reach the effect that the wheel body brake prevented rotational displacement, and when its scheme was born gravity, the elastomer received the compression, and the wheel seat is located the decline position, and the lug breaks away from and can rotate the effect of displacement with the state of the conflict friction of wheel face inner edge, reaches the wheel body release.

Also, for example, the structure of a temporarily slidable chair pulley described in taiwan patent document No. TW262687U is mainly to assemble an intermediary seat, a stopping member, and a torsion spring member in a housing seat, the housing seat penetrates through an inverted U-shaped pivot hole to penetrate through a wheel shaft and the pulley, and the intermediary seat and the torsion spring are contained in the housing seat, the stopping member is installed at the bottom of one side of the housing seat, and a support shaft is installed adjacent to the pivot hole to penetrate through the torsion spring and one end of the intermediary seat; therefore, when a person sits on the chair, the weight is used to press the brake member to move down and rub the brake member against the ground, thereby providing the purpose of temporarily braking the pulley.

However, the above-mentioned gravity wheel (press-stopping wheel) has inconvenience in that the wheel is always kept in a restricted state in a seating state, and thus it is necessary to make the wheel unsuitable for use in a situation where a large office space is pursued and the wheel needs to be rotatable. The utility model discloses the creation is based on the above-mentioned weak point of present gravity wheel (pressure wheel), provides an adjustable pressure and ends chair wheel. Furthermore, the adjusting structure is optimized, so that the structure is simplified, and the operation of a user is facilitated.

Disclosure of Invention

In order to solve the above problems, a first object of the present invention is to provide an adjustable press-stop chair wheel, which is provided with a press-stop switch assembly to adjust and control the gravity press-stop function of the chair wheel; the chair wheel can be switched between the gravity press-stopping wheel and the common chair wheel, and the applicability of the chair wheel is improved.

A second object of the present invention is to provide a seat having the above adjustable press-stop chair wheel.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

an adjustable press-stop chair wheel comprises a chair wheel main body and a tire component positioned on the chair wheel main body through a wheel shaft; the chair wheel main body is provided with a pressure stop part which can move relative to the tire assembly; in a natural state, the tire assembly can rotate relative to the chair wheel main body; the pressure stop part can contact the ground or stop pressing the tire assembly in a pressed state; the method is characterized in that: the chair wheel main body is provided with a pressure stop switch assembly for limiting the movement of the pressure stop portion relative to the tire assembly; when the pressing switch assembly limits the pressing part to move relative to the tire assembly, the tire assembly can rotate relative to the wheel main body in a pressed state.

The utility model adopts the above technical scheme, this technical scheme relates to an adjustable pressure ends chair wheel, and this adjustable pressure ends chair wheel includes chair wheel main part and tire subassembly. The chair wheel main body is provided with a pressure stop part which can move relative to the tire assembly. In a natural state (i.e., a state where the seat wheel receives only the seat's own weight as described in the background art), the tire assembly can rotate relative to the wheel main body. In a pressed state (i.e., in a riding condition), the pressing portion can contact the ground to restrict the rotation of the tire assembly (see taiwan patent document with publication number "TW 262687U"); or the pressure stop portion can stop the tire assembly so as to limit the rotation of the tire assembly (refer to the Chinese utility model patent with the publication number "CN 205513452U" herein).

On the basis of the scheme, the pressing switch assembly is arranged on the chair wheel main body and can limit the pressing portion to move relative to the tire assembly. When the chair wheel is used, the gravity pressing function of the chair wheel can be adjusted through the pressing switch assembly, and when the pressing switch assembly is in an open state and does not limit the pressing part, the chair wheel has the gravity pressing function; when the pressure stop switch component limits the pressure part to move relative to the tire component, the chair wheel does not have the gravity pressure stop function; at this time, the tire assembly can rotate relative to the wheel body even if the wheel is in a pressed state.

In summary, the chair wheel is provided with the pressure stop switch component to adjust and control the gravity pressure stop function of the chair wheel; the chair wheel can be switched between the gravity press-stopping wheel and the common chair wheel, and the applicability of the chair wheel is improved.

Preferably, the pressure stop part is fixed on the wheel chair main body, and the tire assembly is longitudinally arranged on the wheel chair main body in a sliding manner through a wheel axle; in a pressed state, the wheelchair wheel main body and the pressing portion on the wheelchair wheel main body vertically descend, and the pressing portion can contact with the ground or press the tire assembly. In the technical scheme, the tire assembly and the wheel main body can realize longitudinal relative sliding, and the pressure stop part is relatively fixed on the wheel main body. In the pressed state, the chair wheel main body and the pressing part on the chair wheel main body are pressed to move downwards longitudinally, and the pressing is carried out in two ways indicated in the scheme.

Preferably, the press switch assembly includes a press switch main body insertable into a relative movement path of the press portion and the tire assembly to restrict the movement of the press portion relative to the tire assembly. In the technical scheme, the method adopted by the press stop switch assembly is that a press stop switch main body can be inserted into a relative movement path of the press stop portion and the tire assembly, when the press stop switch main body is inserted into the relative movement path of the press stop portion and the tire assembly, the press stop portion is fixed relative to the tire assembly, and the chair wheel does not have a gravity press stop function. When the pressing switch main body is not inserted into the relative motion path of the pressing part and the tire assembly, the chair wheel has the gravity pressing function.

Preferably, the press stop switch assembly further comprises a press stop switch spring for providing a reset force to the press stop switch main body, and a locking member for defining a position of the press stop switch main body; the locking component can at least limit the pressing switch main body to be in a relative movement path of the pressing part and the tire assembly. In this technical solution, the position of the press-stop switch body is locked by the locking member, and there may be a plurality of positions locked by the press-stop switch body, but at least the step of locking the press-stop switch body is required to be in the relative movement path of the press-stop portion and the tire assembly, so that the wheel chair does not have the gravity press-stop function.

Preferably, the press-stop switch main body is provided with a guide groove; the locking part is a locking hook, one end of the locking hook is movably arranged, and the free end of the locking hook is arranged in the guide groove in a sliding manner; the guide groove comprises an opening position and a closing position which are arranged along the axial direction of the press-stopping switch spring, a carry guide section for guiding the movable end of the locking hook to slide from the opening position to the closing position, and a reset guide section for guiding the movable end of the locking hook to slide from the closing position to the opening position; when the movable end of the locking hook is at the closing position, the pressing switch main body is positioned in a relative movement path of the pressing part and the tire assembly; when the movable end of the locking hook is in the opening position, the pressing switch main body exits from the relative movement path of the pressing part and the tire component. Among this technical scheme, the free end through the locking hook slides and sets up in the guide way to adjust between guide way open position and closed position, thereby make the open and close state of the pressure switch subassembly of adjusting.

Preferably, the press-stop switch body is slidably disposed on the wheel body, a pressing portion is disposed at an outer end of the press-stop switch body, and an inner end of the press-stop switch body is capable of extending into a relative movement path between the pressing portion and the tire assembly. In the above scheme, the carry guide section and the reset guide section guide the movable position of the movable end of the locking hook, and through the arrangement of the carry guide section and the reset guide section, the pressure stop switch main body only needs to be arranged on the chair wheel main body in a sliding manner, and the inner end part of the pressure stop switch main body can be controlled to stretch into the relative motion path between the pressure stop part and the tire component by operating the pressure stop switch main body outer end. Because only can through the outer tip of operation pressure-stop switch main part, can simplify operation structure greatly, generally when actual regulation, only need adopt the foot play the mode can, owing only need press can, need not user identification regulation direction, the regulation mode is simple, high-efficient.

Preferably, the tire assembly comprises a hub and an outer wheel coated on the hub, wherein a plurality of pressure stopping grooves are formed in the inner side wall surface of the hub along the circumferential direction of the inner side wall surface; the pressure stopping portion is a pressure stopping protrusion arranged on the chair wheel main body, and the pressure stopping protrusion can be clamped into the pressure stopping groove during longitudinal movement, so that circumferential rotation of the tire assembly is limited. In the technical scheme, the pressure stopping part is a pressure stopping protrusion fixed on the chair wheel main body, a plurality of pressure stopping grooves are formed in the inner side wall surface of the hub along the circumferential direction of the hub, and the circumferential rotation of the tire assembly is limited in a mode that the pressure stopping protrusion is clamped into the pressure stopping grooves, so that the purpose of pressure stopping is achieved. In a further scheme, the pressure stopping groove is in the shape of an arc groove, and the pressure stopping bulge is in the shape of a cylinder matched with the pressure stopping groove.

Preferably, a sliding groove is longitudinally arranged in the chair wheel main body, a pressure stopping piston and a pressure stopping spring acting on the pressure stopping piston are movably arranged in the sliding groove; the tire assembly is positioned on the pressure stop piston through the wheel shaft, and the pressure stop part is driven to leave the pressure stop groove by the acting force of the pressure stop spring. In the technical scheme, the relative movement direction of the tire assembly and the wheel chair main body is limited by the matching of the pressure stop piston and the sliding groove, and the acting force is provided by the pressure stop spring, so that the acting force of the pressure stop spring drives the pressure stop part to leave the pressure stop groove when the wheel chair is only subjected to the self weight of the seat, and the wheel chair can rotate freely; when the vehicle is in a riding state, the pressure enables the pressure stop spring to deform, the pressure stop bulge is clamped into the pressure stop groove to limit circumferential rotation of the tire assembly, and gravity pressure stop is achieved.

Preferably, the press-stopping piston is provided with a bayonet, and an inner end portion of the press-stopping switch main body can extend into the bayonet to lock the press-stopping piston with respect to the sliding groove. In the technical scheme, the inner end part of the pressure stop switch main body can extend into a bayonet of the pressure stop piston, so that the movement of the pressure stop piston relative to the sliding groove is limited, and the locking of the tire assembly and the wheel chair main body is realized.

A seat, characterized by: including an adjustable press-stop chair wheel as described above.

Drawings

Fig. 1 is a schematic view of the structure of an adjustable press-stop chair wheel related to the present invention.

Fig. 2 is an exploded view of the adjustable press-stop chair wheel structure related to the present invention.

Fig. 3 is a schematic structural diagram of the press-stop switch main body.

FIG. 4 is a schematic view of an adjustable press-stop chair wheel in a natural state.

FIG. 5 is a schematic view of an adjustable press-down chair wheel in a pressed state.

FIG. 6 is a schematic view of the adjustable press-stop chair wheel with the movable end of the locking hook in the closed position.

FIG. 7 is a schematic view of the adjustable press-stop chair wheel with the movable end of the locking hook in the reset guide section.

FIG. 8 is a schematic view of the adjustable press-to-stop chair wheel with the movable end of the locking hook in the open position.

FIG. 9 is a schematic view of the adjustable press-stop chair wheel with the movable end of the locking hook in the carry guide section.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Example 1:

an adjustable press-stop wheel as shown in fig. 1-9 comprises a wheel body 1 and a tire assembly positioned on the wheel body 1 through an axle. The upper end of the wheel chair main body 1 is provided with a wheel chair mounting shaft 2 which is arranged on a chassis of the chair through a wheel chair, such as a five-claw chassis commonly used by the prior swivel chair.

The chair wheel main body is provided with a pressure stop part 11, and the pressure stop part 11 can move relative to the tire assembly. In a natural state, the tire assembly can rotate relative to the wheel main body 1. In the pressed state, the pressing portion 11 can contact or press the tire assembly. The adjustable press-stop chair wheel comprises a chair wheel main body 1 and a tire assembly, and a press-stop part 11 can move relative to the tire assembly. In a natural state (i.e., a state where the wheel receives only the seat's own weight as described in the background art), the tire assembly can rotate relative to the wheel main body 1. In a stressed state (i.e., in a riding situation), the stress relief can be performed by the following two schemes. First, the pressing portion 11 can contact the ground to restrict the rotation of the tire assembly (refer to taiwan patent document with the publication number "TW 262687U"); the second solution is that the pressing part 11 can press the tire assembly to limit the rotation of the tire assembly (refer to chinese utility model patent document with publication number "CN 205513452U" here).

Among the above solutions, the solution mainly adopted in the following embodiments is a solution in which the pressing stop portion 11 can lock the tire assembly to rotate. Under the scheme, the following two schemes can be adopted, the first scheme is that the pressure stopping part 11 can be arranged independently of the wheel main body 1 and the tire assembly, the tire assembly is fixed with the wheel main body 1, and only the pressure stopping part 11 is driven to move when the wheel bears the weight.

In a second embodiment, the pressure stop portion 11 is fixed on the wheel main body 1, and the tire assembly is longitudinally slidably disposed on the wheel main body 1 through the axle 31. In the pressed state, the wheel main body 1 and the pressing portion 11 thereon move downwards longitudinally, and the pressing portion 11 can contact with the ground or press the tire assembly. In the second embodiment, the tire assembly and the wheel body 1 can slide relative to each other in the longitudinal direction, and the pressing stop portion 11 is relatively fixed to the wheel body 1. In the pressed state, the wheel body 1 and the pressing portion 11 thereon are pressed to move down longitudinally, and the pressing is performed in two ways indicated in the above scheme. In the refinement shown in the figures, the tire assembly comprises a hub 32 and an outer wheel 33 coated on the hub 32, and the inner side wall surface of the hub 32 is provided with a plurality of pressure stopping grooves 34 along the circumferential direction. The pressure stopping part 11 is a pressure stopping protrusion arranged on the wheel chair main body 1, and the pressure stopping protrusion can be clamped into the pressure stopping groove 34 when moving longitudinally, so that the circumferential rotation of the tire assembly is limited. The pressure stopping part 11 is a pressure stopping protrusion fixed on the wheel chair main body 1, a plurality of pressure stopping grooves 34 are arranged on the inner side wall surface of the wheel hub 32 along the circumferential direction, and the circumferential rotation of the tire assembly is limited in a mode that the pressure stopping protrusion is clamped into the pressure stopping grooves 34, so that the purpose of pressure stopping is achieved. In a further scheme, the pressure stopping groove 34 is in the shape of a circular arc groove, and the pressure stopping bulge is in the shape of a cylinder matched with the pressure stopping groove; and the guide positioning is realized through the matching of circular arcs.

In a further scheme, a sliding groove 12 is formed in the chair wheel main body 1 in the longitudinal direction, a pressure stop piston 41 is movably arranged in the sliding groove 12, and a pressure stop spring 42 acts on the pressure stop piston 41. The tire assembly is positioned on the pressure stop piston 41 through the axle 31, and the pressure stop portion 11 is driven to leave the pressure stop groove 34 by the force of the pressure stop spring 42. The matching of the pressure stop piston 41 and the sliding groove 12 is adopted to limit the relative movement direction of the tire assembly and the wheel body 1, and the pressure stop spring 42 provides acting force, so that when the wheel is only subjected to the self weight of the seat, the acting force of the pressure stop spring 42 drives the pressure stop part 11 to leave the pressure stop groove 34, and the wheel can rotate freely. In the seating state, the pressure deforms the pressure stop spring 42, and the pressure stop protrusion is engaged in the pressure stop groove 34 to restrict circumferential rotation of the tire assembly, thereby achieving gravity pressure stop. As shown in the drawings, the wheel shaft 31 of the tire assembly is fixed to the hold-down piston 41, both ends of the wheel shaft 31 pass through the hold-down piston 41 and the wheel body 1, and the wheel body 1 is provided with a strip-shaped hole on the side wall of the sliding groove 12 for passing the wheel shaft 31 and guiding the wheel shaft 31 while moving longitudinally with the hold-down piston 41.

On the basis of the scheme, the chair wheel main body 1 is also provided with a press stop switch component 5, and the press stop switch component 5 can limit the movement of the press stop part 11 relative to the tire component. When the wheelchair is used, the gravity pressing function of the wheelchair wheel can be adjusted through the pressing switch component 5, and when the pressing switch component 5 is in an open state and the pressing part 11 is not limited, the wheelchair wheel has the gravity pressing function. When the press switch assembly 5 limits the movement of the press portion 11 relative to the tire assembly, the wheel does not have the gravity press function. At this time, the tire assembly can rotate relative to the wheel main body 1 even if the wheel is in a pressed state. Therefore, the chair wheel is provided with the press stopping switch component 5 to adjust and control the gravity press stopping function of the chair wheel. The chair wheel can be switched between the gravity press-stopping wheel and the common chair wheel, and the applicability of the chair wheel is improved.

Specifically, the press switch assembly 5 includes a press switch main body 51 that can be inserted into a relative movement path between the press portion 11 and the tire assembly to restrict the movement of the press portion 11 relative to the tire assembly. As described above, the pressing portion 11 may be provided independently of the wheel body 1 and the tire assembly in one embodiment; in another embodiment, the pressing stop portion 11 is fixed to the wheel main body 1. The push-stop switch assembly 5 in this embodiment can therefore restrict the movement of the push portion 11 relative to the tire assembly to satisfy both embodiments described above. Specifically, the method adopted by the press-stop switch assembly 5 is that the press-stop switch main body 51 can be inserted into the relative movement path of the press-stop portion 11 and the tire assembly, and when the press-stop switch main body 51 is inserted into the relative movement path of the press-stop portion 11 and the tire assembly, the press-stop portion 11 is fixed relative to the tire assembly, and the wheel chair does not have the gravity press-stop function. When the pressing switch main body 51 is not inserted into the relative motion path between the pressing part 11 and the tire assembly, the chair wheel has a gravity pressing function.

In a further preferred embodiment, the press-stop switch assembly 5 further includes a press-stop switch spring 52 for providing a reset force to the press-stop switch main body 51, and a locking member for defining a position of the press-stop switch main body 51. The locking component can at least limit the pressing switch main body 51 in the relative movement path of the pressing part 11 and the tire assembly. In this embodiment, the locking member is used to lock the position of the push-stop switch main body 51, and there may be a plurality of positions for locking the push-stop switch main body 51, but at least the locking member is required to lock the push-stop switch main body 51 and make it in the relative movement path between the push-stop portion 11 and the tire assembly, so that the wheel chair does not have the function of gravity push-stop. In fig. 3, the press-stop switch main body 51 is provided with a guide groove and a plurality of material saving holes 514; the press-stop switch main body 51 is formed by plastic injection molding, and the material saving hole 514 is mainly used for preventing deformation caused by shrinkage in the molding process of a plastic part. The locking part is a locking hook 53, one end of the locking hook 53 is movably arranged on the wheel main body 1, the free end of the locking hook 53 is arranged in the guide groove in a sliding way, and the movable end of the locking hook 53 is generally only used for making some adaptive direction adjustment when the free end of the locking hook 53 slides along the guide groove, such as hinging. The guide groove includes an open position 51a and a closed position 51b provided in an axial direction of the press-stop switch spring 52, and a carry guide section 511 guiding the movable end of the locking hook 53 to slide from the open position 51a to the closed position 51b, and a reset guide section 512 guiding the movable end of the locking hook 53 to slide from the closed position 51b to the open position 51 a. When the movable end of the locking hook 53 is in the closed position 51b, the press-stop switch body 51 is in the relative movement path of the press-stop portion 11 and the tire assembly. When the movable end of the locking hook 53 is in the open position 51a, the press-stop switch body 51 exits the relative movement path of the press-stop portion 11 and the tire assembly. In this solution, the free end of the locking hook 53 is slidably disposed in the guide groove, and is adjusted between the open position 51a and the closed position 51b of the guide groove, so that the open/close state of the press-stop switch assembly 5 is adjusted.

In a further preferred embodiment, the wheel body 1 is provided with a press-stop opening/closing groove 14, and the press-stop opening/closing groove 14 communicates with the slide groove 12. The press-stop switch body 51 is slidably disposed in the press-stop switch groove 14 of the wheel main body 1, the outer end of the press-stop switch body 51 is provided with a pressing portion 513, and the inner end of the press-stop switch body 51 can extend into the relative movement path of the press-stop portion 11 and the tire assembly. Specifically, the press-stopping piston 41 is provided with a bayonet 411, and an inner end portion of the press-stopping switch body 51 can be inserted into the bayonet 411 to lock the press-stopping piston 41 with respect to the sliding groove 12. In the above scheme, the carry guiding section 511 and the reset guiding section 512 guide the movable position of the movable end of the locking hook 53, through the arrangement of the carry guiding section 511 and the reset guiding section 512, the press-stopping switch main body 51 only needs to be arranged on the wheel chair main body 1 in a sliding manner, and by operating the pressing part 513 at the outer end of the press-stopping switch main body 51, whether the inner end part of the press-stopping switch main body 51 extends into the bayonet 411 of the press-stopping piston 41 can be controlled, so that the movement of the press-stopping piston 41 relative to the sliding groove 12 is limited, and the locking of the tire assembly and the wheel chair main body 1 is also realized. Because only can through the outer tip of operation pressure-stop switch main part 51, can simplify operation structure greatly, generally when the actual regulation, only need adopt the mode of kicking can, owing only need press can, need not user identification regulation direction, the regulation mode is simple, high-efficient.

As described above, as shown in fig. 6, when the movable end of the locking hook 53 is in the closed position 51b of the guide groove and the inner end of the push switch body 51 is inserted into the notch 411 of the push piston 41, the push stop portion 11 is fixed to the tire assembly, and the wheel does not have the gravity push stop function. As shown in fig. 7, the movable end of the locking hook 53 slides from the closed position 51b to the open position 51a of the guide groove under the guidance of the reset guide section 512. As shown in fig. 8, the movable end of the locking hook 53 is located at the open position 51a of the guide groove, the inner end of the push-stop switch body 51 is withdrawn from the bayonet 411 of the push-stop piston 41, and the wheel chair has a gravity push-stop function. As shown in fig. 9, the movable end of the locking hook 53 slides from the open position 51a to the closed position 51b of the guide slot under the guidance of the carry guide segment 511.

Example 2:

this embodiment relates to a seat comprising an adjustable press-down chair wheel as described in embodiment 1.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present invention have been shown and described, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that changes, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the principles and spirit of the present invention.

Claims (10)

1. An adjustable press-stop chair wheel comprises a chair wheel main body (1) and a tire component positioned on the chair wheel main body (1) through a wheel shaft (31); the chair wheel main body (1) is provided with a pressure stop part (11), and the pressure stop part (11) can move relative to the tire assembly; in a natural state, the tire assembly can rotate relative to the chair wheel main body (1); the pressure stop part (11) can contact with the ground or stop pressing the tire assembly in a pressed state; the method is characterized in that: the chair wheel main body (1) is provided with a pressure stop switch component (5) for limiting the movement of the pressure stop part (11) relative to the tire component; when the pressing switch component (5) limits the movement of the pressing part (11) relative to the tire component, the tire component can rotate relative to the wheel main body (1) in a pressed state.

2. An adjustable press-down chair wheel as claimed in claim 1, wherein: the pressure stop part (11) is fixed on the wheel chair main body (1), and the tire assembly is longitudinally arranged on the wheel chair main body (1) in a sliding manner through a wheel shaft (31); in a pressed state, the chair wheel main body (1) and the pressing part (11) on the chair wheel main body vertically descend, and the pressing part (11) can contact with the ground or press the tire assembly.

3. An adjustable press-down chair wheel as claimed in claim 1, wherein: the press stop switch assembly (5) comprises a press stop switch main body (51) which can be inserted into a relative movement path of the press stop portion (11) and the tire assembly so as to limit the movement of the press stop portion (11) relative to the tire assembly.

4. An adjustable press-down chair wheel as claimed in claim 3, wherein: the press stop switch assembly (5) further comprises a press stop switch spring (52) for providing a reset force for the press stop switch main body (51), and a locking component for limiting the position of the press stop switch main body (51); the locking component can at least limit the pressing switch main body (51) in a relative movement path of the pressing part (11) and the tire assembly.

5. An adjustable press-down chair wheel as claimed in claim 4, wherein: the pressure stop switch main body (51) is provided with a guide groove; the locking part is a locking hook (53), one end of the locking hook (53) is movably arranged, and the free end of the locking hook (53) is arranged in the guide groove in a sliding manner; the guide groove comprises an opening position (51a) and a closing position (51b) which are arranged along the axial direction of the press-stopping switch spring (52), a carry guide section (511) which guides the movable end of the locking hook (53) to slide from the opening position (51a) to the closing position (51b), and a reset guide section (512) which guides the movable end of the locking hook (53) to slide from the closing position (51b) to the opening position (51 a); when the movable end of the locking hook (53) is in the closed position (51b), the press-stopping switch main body (51) is in a relative movement path of the press-stopping part (11) and the tire assembly; when the movable end of the locking hook (53) is in the opening position (51a), the press stop switch main body (51) exits the relative movement path of the press stop part (11) and the tire assembly.

6. An adjustable press-stop chair wheel as claimed in claim 5, wherein: the press-stop switch main body (51) is arranged on the wheel chair main body (1) in a sliding mode, a pressing portion (513) is arranged at the outer end of the press-stop switch main body (51), and the inner end portion of the press-stop switch main body (51) can extend into a relative movement path of the pressing portion (11) and the tire assembly.

7. An adjustable press-down chair wheel according to any one of claims 3-6, wherein: the tire assembly comprises a hub (32) and an outer wheel (33) coated on the hub (32), wherein a plurality of pressure stopping grooves (34) are formed in the inner side wall surface of the hub (32) along the circumferential direction of the inner side wall surface; the pressure stopping portion (11) is a pressure stopping protrusion arranged on the chair wheel main body (1), and the pressure stopping protrusion can be clamped into the pressure stopping groove (34) during longitudinal movement, so that circumferential rotation of the tire assembly is limited.

8. An adjustable press-down chair wheel as claimed in claim 7, wherein: a sliding groove (12) which is longitudinally arranged is arranged in the chair wheel main body (1), a pressure stopping piston (41) and a pressure stopping spring (42) acting on the pressure stopping piston (41) are movably arranged in the sliding groove (12); the tire assembly is positioned on a pressure stop piston (41) through a wheel shaft (31), and the pressure stop part (11) is driven to leave a pressure stop groove (34) by the action force of a pressure stop spring (42).

9. An adjustable press-down chair wheel as claimed in claim 8, wherein: the pressure stop piston (41) is provided with a bayonet (411), and the inner end part of the pressure stop switch main body (51) can extend into the bayonet (411) to lock the pressure stop piston (41) relative to the sliding groove (12).

10. A seat, characterized by: comprising an adjustable press-stop chair wheel according to any one of claims 1-9.

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