WO2016206262A1

WO2016206262A1 - Caster wheel

Info

Publication number: WO2016206262A1
Application number: PCT/CN2015/092760
Authority: WO
Inventors: 赵江宜
Original assignee: 福州华鹰塑胶模具有限公司
Priority date: 2015-06-24
Filing date: 2015-10-23
Publication date: 2016-12-29
Also published as: CN204687734U

Abstract

A caster wheel comprises a support frame (1), a compression spring (2), a rotational axle (4), wheel covers (5) and an insertion board (3). A hollow inside of the support frame (1) forms an insertion board movable cavity (11). The compression spring (2) and the insertion board (3) are arranged in the insertion board movable cavity (11). One end of the compression spring (2) is configured to press against a wall of the insertion board movable cavity (11), while another end of the compression spring (2) is configured to press against the insertion board (3). The support frame (1) is also provided with an axle hole. The axle hole is vertical to and communicated with the insertion board movable cavity (11) and forms an opening (12) at a side wall of the support frame (1). The insertion board (3) is provided with a through hole (31) located at a location corresponding to a location of the opening. The rotational axle (4) is configured to pass through the axle hole and the through hole (31) on the insertion board. A diameter of the rational axle (4) is less than a height of the opening. The wheel covers (5) are arranged at two ends of the rotational axle protruding from the support frame (1). The embodiment enables free rotation of the rotational axle when a chair is seated, and an automatic locking effect of the rotational axle when the chair is empty.

Description

Instruction manual Name of the invention: a runner

Technical field

[0001] The utility model relates to the field of seat design, in particular to a runner capable of automatic braking.

Background technique

[0002] It is a very common design to set the runner under the seat at the moment, and the seat is set as a swivel chair, which can be conveniently moved in a small area (such as the desk), which is very popular among users, but if no one When riding, the swivel chair runner will slip. For example, if the user gets up, he will apply a small amount of backward force to the swivel chair, but the swivel chair will slide out a few meters away, which is inconvenient for people to use. Therefore, it is necessary to have only one person sitting in the swivel chair. The runner that can slide on the upper jaw improves the practicality of the swivel chair.

technical problem

[0003] The technical problem to be solved by the present invention is to provide a revolving wheel to solve the problem that no one rides on the reeling wheel.

Problem solution

Technical solution

[0004] The utility model is realized as follows: a rotating wheel, the rotating wheel comprises a support frame, a compression spring, a rotating shaft, a wheel cover and a plug-in plate, wherein the support frame is hollow to form a plug-in movable cavity, a compression spring and The inserting plate is placed in the movable cavity of the inserting plate, one end of the compression spring abuts against the wall of the movable cavity of the inserting plate, and the other end of the compression spring abuts against the inserting plate, the supporting frame is further provided with a shaft hole, the shaft hole and The movable cavity of the inserting plate is vertical and connected, and the axial hole forms a mouth on the side wall of the support frame; the inserting plate is provided with a through hole, the position of the through hole corresponds to the position of the opening, and the rotating shaft passes through the shaft hole and the inserting plate The upper through hole, the diameter of the rotating shaft is smaller than the height of the opening; the wheel cover is disposed at two ends of the rotating shaft protruding from the supporting frame.

[0005] Further, the wheel cover includes a hub and a wheel surface, the center of the hub is fixed at two ends of the rotating shaft, the hub plane is perpendicular to the rotating shaft, and the circumference of the hub extends to one side of the supporting frame to form a wheel surface. One side of the inner diameter of the wheel surface is a friction wheel plate; the side wall of the support frame further extends from the side of the hub to the support plate, and the support plate and the friction wheel plate partially overlap in the direction of the vertical rotation axis, and the support plate faces the friction wheel plate. The distance from the end face to the lower end of the side wall of the same side support frame is greater than or equal to the end face of the friction wheel plate facing the support plate to the rotating shaft The distance from the lower endpoint.

[0006] Preferably, the friction plate has an arc shape, and the radius of the friction plate is the same as the inner diameter of the wheel surface.

[0007] Further, the bottom of the support frame is provided with a fitting opening for allowing the insertion plate to pass, and the insertion plate includes two shaft holes, and the shaft holes are vertically symmetrical.

[0008] Specifically, the support frame includes a top cover, and the top cover has a circular arc shape, and is disposed above the chamber, wherein a center of the circular arc is at a rotation center of the rotating shaft; the top cover is further connected to the pin, The pin is used to mount the runner on the seat.

[0009] Further, two ends of the rotating shaft are respectively provided with two adjacent annular grooves, and the annular groove is disposed around the side of the rotating shaft, and two adjacent rings surrounding the inner side of the shaft hole are disposed in the shaft hole of the wheel cover. A strip, the annular strip is placed in the annular groove.

Advantageous effects of the invention

Beneficial effect

[0010] The utility model has the following advantages: the spring is pushed out by the design spring, and the rotating shaft is driven against the lower end of the boring, which increases the rotational frictional force of the rotating shaft, prevents the rotation of the rotating shaft, and reaches the natural state of the rotating wheel. The technical effect of braking.

Brief description of the drawing

DRAWINGS

1 is a cross-sectional structural view of the present invention;

2 is a side view of the support frame of the present invention;

3 is a side view of the plug-in board of the present invention.

[0014] DESCRIPTION OF REFERENCE NUMERALS:

[0015] 1. Support frame;

[0016] 11, the board active cavity;

[0017] 12, gargle;

[0018] 13, a friction plate;

[0019] 2, a compression spring;

[0020] 3, the board;

[0021] 31, through hole; [0022] 4, the shaft;

[0023] 5, wheel cover;

[0024] 51, a hub;

[0025] 52, the tread.

BEST MODE FOR CARRYING OUT THE INVENTION

The technical contents, structural features, objects and effects achieved by the present invention will be described in detail below with reference to the embodiments.

[0027] Please refer to FIG. 1 , which is a structural schematic view of a rotating wheel of the present invention. The figure shows a sectional structure of a vertical plane in which the axis of symmetry of the rotating shaft 4 of the rotating wheel is located; The rotating wheel comprises a support frame 1, a compression spring 2, a rotating shaft 4, a wheel cover 5 and a plug-in plate 3. The inside of the support frame is hollow to form a plug-in movable cavity 11, and the compression spring and the inserting plate are placed in the movable cavity of the inserted plate. One end of the compression spring 2 abuts against the wall of the movable cavity of the card, and the other end of the compression spring 2 abuts against the insertion plate 3, and the support frame is further provided with a shaft hole, and the shaft hole is perpendicular to the movable cavity of the card And communicating, the shaft hole forms a rake 12 on the side wall of the support frame; the inserting plate 3 is provided with a through hole 31, the through hole position corresponding to the position of the rake, the rotating shaft 4 passing through the shaft hole and the plug board The through hole, the diameter of the rotating shaft is smaller than the height of the opening; the wheel cover is disposed at two ends of the rotating shaft protruding from the supporting frame. In some specific embodiments, the compression spring always provides an outwardly extending restoring force to the original length, so that the insertion plate 3 moves downward, and the through hole 31 of the insertion plate drives the axial movement downward until the abutment At the lower end of the cymbal of the support frame 1, the spring force of the spring increases the pressure of the rotating shaft against the lower end of the cymbal, thereby increasing the rotational friction force and achieving the effect of braking the shaft. In other embodiments, in the case where the external pressure is applied to the support frame (for example, the gravity of the human body), the gravity is generally greater than the spring force of the spring, and the downward movement of the support frame forces the spring to be further compressed, and the shaft is disengaged from the mouth. The friction state at the lower end allows the shaft to rotate freely. Through the above design, the technical effect of the free rotation of the rotating shaft in the riding state and the automatic braking of the rotating shaft after the person gets up is achieved.

[0028] The wheel cover includes a hub 51 and a wheel surface 52. The center of the hub is fixed at two ends of the rotating shaft 4, the hub plane is perpendicular to the rotating shaft, and the circumference of the hub extends to one side of the supporting frame to form a wheel surface 52. The inner side of the wheel surface 52 is a friction wheel plate; as can be seen from FIG. ₂ , the side wall of the support frame also extends from the side of the hub out of the support plate 13, as shown in FIG. 1, the support plate and the friction The wheel plates partially overlap in the direction of the vertical axis of rotation, The distance from the end surface of the support plate toward the friction wheel plate to the lower end point of the side wall bracket of the same side support frame (ie, the line segment b shown in FIG. 1) is greater than or equal to the end surface of the friction wheel plate toward the support plate to the lower end of the rotation shaft (ie, The distance of line segment a) shown in Figure 1. Therefore, in some embodiments, when the spring presses the insert 吋 downward in the natural state, the insert plate drives the rotating shaft to drive the wheel cover to move downward, because the support plate faces the end surface of the friction wheel plate to the side wall of the same side support frame. The distance between the lower end of the rake is greater than or equal to the distance from the end surface of the friction wheel plate toward the support plate to the lower end of the rotating shaft, so that the support plate and the friction wheel plate also enter the abutment state before the rotating shaft and the rake enter the abutting state. . The increase in pressure between the tread and the support plate also results in an increase in the static friction between the tread and the support plate, so that in the natural state, the runner is in a braking state. Preferably, as shown in FIG. 2, the upper end surface of the support plate has an arc shape, and the diameter of the arc is equivalent to the inner diameter of the wheel surface, so that it can be better fitted to improve the frictional force. In other embodiments, in the case where the external pressure is applied to the support frame (for example, the gravity of the human body), the gravity is generally greater than the spring force of the spring, and the downward movement of the support frame forces the spring to be further compressed, and the rotating shaft drives the wheel cover ( The tread) is disengaged from the frictional state of the upper end of the support so that the reel can rotate freely. Through the above design, the free rotation of the rotating shaft in the riding state is better achieved, and the technical effect of the automatic braking of the rotating shaft after the person gets up, thereby better solving the problem of the rotating wheel braking in the natural state.

[0029] Further, the bottom of the support frame is provided with a mounting opening for allowing the insertion plate to pass through. As shown in FIG. 3, the insertion plate 3 includes two through holes, and the through holes are vertically symmetric. The above design is to facilitate the insertion of the inserting plate 3 into the movable cavity of the inserting plate in the assembly, and the design of two symmetric through holes is to improve the assembly efficiency. The inserting plate is inserted into the movable cavity in any direction, and a through hole is aligned with the cornice. The worker does not need to adjust the direction in which the inserting plate is assembled into the movable cavity in the assembly, thereby improving the assembly efficiency.

[0030] In some specific embodiments, the support frame includes a top cover, and the top cover has a circular arc shape, and is disposed above the chamber, and a center of the circular arc is at a rotation center of the rotating shaft; Connected to a pin for mounting the wheel on the seat. In some embodiments, the seat can be fixed by a fixing member such as a screw nut or the like, and the pin commonly used in the art is used to be freely rotatable in the horizontal direction. Through the above design, the runner can be easily assembled to the seat, which improves the utility of the utility model.

[0031] In some embodiments, in order to increase the connection force between the rotating shaft and the wheel cover, two ends of the rotating shaft are respectively provided with two adjacent annular grooves 40, and the annular groove is disposed around the side of the rotating shaft, and the shaft of the wheel cover Two adjacent annular strips 54 are provided in the bore 53 around the inner side of the shaft bore in which the annular strip is placed. The above description is only an embodiment of the present invention, and thus does not limit the scope of patent protection of the present invention. Any equivalent structure or equivalent process transformation made by using the specification and the drawings of the present invention, or directly or Indirect use in other related technical fields is equally included in the scope of patent protection of the present invention. Embodiments of the invention

[0033] The description paragraphs of the embodiments of the present invention are entered here.

Industrial applicability

[0034] Enter the paragraph of industrial applicability description here.

Sequence table free content

[0035] Type the sequence table free content description paragraph here.

Claims

Claim

[Claim 1] A runner, wherein the runner comprises a support frame, a compression spring, a rotating shaft, a wheel cover and a plug-in plate, wherein the support frame is hollow to form a plug-in movable cavity, a compression spring and a plug-in plate Positioned in the movable cavity of the inserting plate, one end of the compression spring abuts against the wall of the movable cavity of the inserting plate, and the other end of the compression spring abuts against the inserting plate, the supporting frame is further provided with a shaft hole, a shaft hole and a plug-in plate The movable cavity is vertical and connected, and the shaft hole forms a mouth on the side wall of the support frame; the insert plate is provided with a through hole, the through hole position corresponding to the position of the mouth, the rotating shaft passing through the shaft hole and the inserting plate a through hole, the diameter of the rotating shaft is smaller than a height of the mouth; the wheel cover is disposed at two ends of the rotating shaft protruding from the supporting frame

[Claim 2] The runner according to claim 1, wherein the wheel cover includes a hub and a tread

The center of the hub is fixed at two ends of the rotating shaft, the plane of the hub is perpendicular to the rotating shaft, and the circumference of the hub extends to one side of the supporting frame to form a wheel surface, and the inner side of the wheel surface is a friction wheel plate; The side wall further extends from the side of the hub to the support plate, and the support plate and the friction wheel plate partially overlap in the direction of the vertical rotation axis, and the distance of the support plate toward the end face of the friction wheel plate to the lower end of the side wall of the same side support frame Greater than or equal to the distance of the friction wheel plate toward the end face of the support plate to the lower end of the rotating shaft.

[Claim 3] The runner according to claim 2, wherein the friction plate has an arc shape, and a radius of the friction plate is the same as an inner diameter of the wheel surface.

[Claim 4] The runner according to claim 1, wherein the bottom of the support frame is provided with a fitting opening for allowing the insertion plate to pass, and the insertion plate includes two shaft holes, and the shaft hole is up and down symmetry.

[Claim 5] The runner according to claim 1, wherein the support frame comprises a top cover, and the top cover is of a circular arc shape, disposed above the chamber, and the center of the circular arc rotates on the rotating shaft The top cover is also coupled to a pin for mounting the wheel on the seat.

[Claim 6] The runner according to claim 1, wherein two ends of the rotating shaft are respectively provided with two adjacent annular grooves, and the annular groove is disposed around the side of the rotating shaft, and the shaft hole of the wheel cover is disposed There are two adjacent annular strips surrounding the inner side of the shaft bore in which the annular strip is placed.