CN219706563U - Caster with adjustable height - Google Patents

Abstract

The utility model discloses a height-adjustable castor, which comprises a connecting seat and a castor main body, wherein the connecting seat is used for installation and connection, and is characterized in that: the caster comprises a caster body, wherein the caster body is characterized in that an adjusting screw is fixedly arranged at the upper end of the caster body, a screw hole matched with the screw thread of the adjusting screw is penetrated through the connecting seat, a plurality of clamping arms capable of elastically swinging are uniformly distributed on the connecting seat along the circumference by taking the screw hole as the center, a plurality of convex parts are uniformly distributed on the opposite inner sides of the clamping arms along the vertical direction, a fixing block is arranged between the clamping arms on the adjusting screw, and concave parts for being embedded with the convex parts are uniformly distributed on the fixing block along the outer circumference. Through the bottom with the connecting seat pre-fixed in the mobile object, through the screw thread fit of adjusting screw and connecting seat on the truckle main part, when the manual truckle main part that rotates of user, adjusting screw moves along screw axial screw thread to the height adjustment of truckle main part is realized to the realization.

Description

Caster with adjustable height

Technical Field

The utility model particularly relates to a height-adjustable castor.

Background

Casters are a generic term and include movable casters, fixed casters and movable casters with brakes. The movable castor is a universal wheel, and the structure of the movable castor allows 360 degrees of rotation; the fixed castor is also called a directional castor, which has no rotating structure and can not rotate.

The height of the conventional castor is fixed, so that the change and free adjustment are difficult, and once the wheel mill is damaged, the new wheel is difficult to be installed to be consistent with the original stand height, so that a movable object provided with the castor cannot be balanced.

There is a need for a caster with an adjustable height that ameliorates the above-mentioned problems.

Disclosure of Invention

Aiming at the defects existing in the prior art, the technical problems to be solved by the utility model are as follows: a caster with adjustable height is provided.

The utility model provides a but height-adjusting's truckle, is including connecting seat and the truckle main part that supplies the erection joint, truckle main part upper end is fixed to be provided with adjusting screw, run through on the connecting seat have with adjusting screw thread fit's screw, it has a plurality of elastic wobbling's arm clamps to use the screw as the center along circumference equipartition on the connecting seat, has a plurality of convex parts along vertical equipartition evagination in the relative inboard of a plurality of arm clamps, be provided with the fixed block on the adjusting screw between a plurality of arm clamps, along the vertical equipartition indent of outer circumference on the fixed block have the concave part that supplies with the convex part gomphosis mutually.

In one embodiment, a connecting ring is connected between the connecting seat and the plurality of clamp arms, an external thread is arranged on the connecting ring along the outer circumference, a locking sleeve is sleeved on the external thread in a threaded fit manner, and the inner side wall of the locking sleeve is abutted against the outer side walls of the plurality of clamp arms, so that the convex parts on the clamp arms are kept in a jogged state of the concave parts of the fixed blocks.

In one embodiment, the plurality of clamp arms are respectively in an elastic far-away state relatively far away from the outward expansion relative to the screw holes when in an initial state.

In one embodiment, the plurality of clamping arms are connected to the connecting ring in an elastically deformable integrated manner.

In one embodiment, the plurality of clamp arms are rotatably arranged on the connecting ring, torsional springs are respectively abutted against the rotating connection positions of the clamp arms and the connecting ring in one-to-one correspondence, and the plurality of clamp arms are respectively in relatively far-away swinging states through the torsional springs.

In one embodiment, the caster body comprises a fixing seat, a U-shaped supporting frame and a caster, the U-shaped supporting frame is rotatably arranged on the fixing seat, the caster is rotatably arranged on the U-shaped supporting frame, and the fixing block and the adjusting screw are coaxially and fixedly arranged at the upper end of the fixing seat.

In an embodiment, the U-shaped supporting frame comprises a U-shaped trundle support and a U-shaped shock absorption support, the trundle is rotationally arranged on the U-shaped shock absorption support, the U-shaped trundle support is hinged with the U-shaped shock absorption support, a movable shaft is hinged on the U-shaped shock absorption support, a shock absorption rod is arranged on the movable shaft, the U-shaped trundle support is provided with a strip-shaped groove, and a shock absorption spring is arranged on the shock absorption rod after the upper end of the shock absorption rod passes through the strip-shaped groove.

In summary, compared with the prior art, the utility model has the following beneficial effects:

the utility model has simple structure, the connecting seat is pre-fixed at the bottom of the moving object, and the adjusting screw rod on the caster body is in threaded fit with the screw hole of the connecting seat, when the caster body is manually rotated by a user, the adjusting screw rod moves along the axial screw thread of the screw hole, so that the height of the caster body is conveniently adjusted; and the convex part of the elastic clamping arm on the connecting seat is embedded with the concave part of the fixed block on the screw rod, so that the locking fixation of the adjusting screw rod moving along the axial direction of the screw hole is realized, and the condition that the moving object is unbalanced due to the fact that the adjusting screw rod rotates and the supporting height is changed due to friction when the adjusting screw rod is matched with the screw hole by threads is avoided.

Drawings

FIG. 1 is an exploded view of a caster with adjustable height according to one embodiment of the present utility model;

FIG. 2 is a schematic perspective view of a caster with adjustable height according to an embodiment of the present utility model;

FIG. 3 is a schematic cross-sectional view of a caster with adjustable height according to an embodiment of the present utility model;

FIG. 4 is a first diagram illustrating a connection structure between a clip arm and a connection base according to an embodiment of the present utility model;

FIG. 5 is a second diagram illustrating a connection structure between a clip arm and a connection base according to an embodiment of the present utility model;

fig. 6 is an exploded view of a U-shaped support frame according to an embodiment of the present utility model.

Detailed Description

The utility model is further described in the following description and detailed description with reference to the drawings:

as shown in fig. 1 to 6, an embodiment of the present utility model preferably provides a caster with adjustable height, which comprises a connecting seat 1 and a caster body 2 for installation connection, an adjusting screw 3 is fixedly arranged at the upper end of the caster body 2, a screw hole 4 in threaded fit with the adjusting screw 3 penetrates through the connecting seat 1, a plurality of clamping arms 5 capable of elastically swinging are uniformly distributed on the connecting seat 1 along the circumference with the screw hole 4 as the center, a plurality of convex parts 6 are uniformly distributed on the opposite inner sides of the clamping arms 5 along the vertical direction, a fixing block 7 is arranged between the clamping arms 5 on the adjusting screw 3, and concave parts 8 for being jogged with the convex parts 6 are uniformly distributed on the fixing block 7 along the outer circumference.

Specifically, the connecting seat is pre-fixed at the bottom of the moving object, and the adjusting screw rod on the caster body is in threaded fit with the screw hole of the connecting seat, so that when a user manually rotates the caster body, the adjusting screw rod moves along the axial screw hole of the screw hole, and the height of the caster body is conveniently adjusted; and the convex part of the elastic clamping arm on the connecting seat is embedded with the concave part of the fixed block on the screw rod, so that the locking fixation of the adjusting screw rod moving along the axial direction of the screw hole is realized, and the condition that the moving object is unbalanced due to the fact that the adjusting screw rod rotates and the supporting height is changed due to friction when the adjusting screw rod is matched with the screw hole by threads is avoided.

Further, a connecting ring 10 is connected between the connecting seat 1 and the plurality of clamping arms 5, an external thread is provided along the outer circumference of the connecting ring 10, a locking sleeve 9 is sleeved on the external thread in a threaded fit manner, and the inner side walls of the locking sleeve 9 are abutted against the outer side walls of the plurality of clamping arms 5, so that the convex parts 6 on the clamping arms 5 are kept in a jogged state of the concave parts 8 of the fixed blocks 7.

Specifically, the locking sleeve is rotated to enable the locking sleeve to move downwards along the external threads of the connecting ring relative to the connecting seat, so that the inner side wall of the locking sleeve moves to abut against the outer side walls of the clamping arms, the convex parts on the clamping arms are enabled to be kept in the embedded state of the concave parts of the fixing blocks, and locking fixation of the adjusting screw rod moving along the axial direction of the screw hole is achieved.

In one embodiment, as shown in fig. 4 to 5, the arms 5 are in an initial state, and are in a resilient and far-apart state relatively far away from the outward expansion relative to the screw holes 4. When the locking sleeve moves along the external thread to separate from the abutting of the clamping arms, the clamping arms are in an outwards-expanded elastic far-away state relatively, and then the convex parts of the clamping arms are kept in a separating state separated from the concave parts of the fixed blocks, so that the adjusting screw rod can conveniently adjust and move along the screw hole in height.

In one embodiment, as shown in fig. 4, a plurality of clip arms 5 are elastically deformable and integrally connected to the connecting ring 10.

In one embodiment, as shown in fig. 5, a plurality of clamping arms 5 are rotatably disposed on the connecting ring 10, and torsion springs are respectively abutted against the rotation connection positions of the clamping arms 5 and the connecting ring 10 in a one-to-one correspondence manner, and the plurality of clamping arms 5 are respectively in relatively far away swinging states through the torsion springs.

Specifically, the clamping arms can be formed by integrally forming elastic deformation and the connecting ring, or can be arranged on the connecting ring in an elastic rotation way through the matching of the rotating shaft and the torsion spring, and the clamping arms are not limited herein, namely, a plurality of clamping arms can relatively take an outward elastic expansion state when in an initial state without external force action.

Further, the caster body 2 includes a fixing seat 11, a U-shaped supporting frame 12 rotatably disposed on the fixing seat 11, and a caster 13 rotatably disposed on the U-shaped supporting frame 12, and the fixing block 7 and the adjusting screw 3 are coaxially and fixedly disposed at an upper end of the fixing seat 11. The universal wheel structure of the caster on the U-shaped support frame is realized by rotating and connecting the fixing seat and the U-shaped support frame, and the space between the universal wheels and the opposite connecting seats is adjusted by arranging the fixing block and the adjusting screw on the fixing seat.

Further, the U-shaped supporting frame 12 comprises a U-shaped castor bracket 21 and a U-shaped damping bracket 22, the castor 13 is rotatably arranged on the U-shaped damping bracket 22, the U-shaped castor bracket 21 is hinged to the U-shaped damping bracket 22, a movable shaft 23 is hinged to the U-shaped damping bracket 22, a damping rod 24 is arranged on the movable shaft 23, the U-shaped castor bracket 21 is provided with a strip-shaped groove 25, and a damping spring 26 is arranged on the damping rod 24 after the upper end of the damping rod 24 passes through the strip-shaped groove 25. Specifically, install damping spring on the shock attenuation pole and form shock-absorbing structure, the loose axle rotates along with the swing of U type shock attenuation support, and the swing range of U type shock attenuation support is big and steady.

While there has been shown and described what is at present considered to be the fundamental principles and the main features of the utility model and the advantages thereof, it will be understood by those skilled in the art that the present utility model is not limited to the foregoing embodiments, but is described in the foregoing description merely illustrates the principles of the utility model, and various changes and modifications may be made therein without departing from the spirit and scope of the utility model as hereinafter claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (7)

1. The utility model provides a but height-adjusting's truckle, including supply connecting seat (1) and truckle main part (2) of installation connection, its characterized in that: the caster comprises a caster body (2), wherein an adjusting screw (3) is fixedly arranged at the upper end of the caster body, a screw hole (4) in threaded fit with the adjusting screw (3) is penetrated through the connecting seat (1), a plurality of clamping arms (5) capable of elastically swinging are uniformly distributed on the connecting seat (1) along the circumference by taking the screw hole (4) as the center, a plurality of convex parts (6) are uniformly distributed on the opposite inner sides of the plurality of clamping arms (5) along the vertical direction, a fixing block (7) is arranged between the plurality of clamping arms (5) on the adjusting screw (3), and concave parts (8) for being embedded with the convex parts (6) are uniformly distributed on the fixing block (7) along the outer circumference.

2. A height adjustable caster according to claim 1, wherein: the connecting seat (1) is connected with a connecting ring (10) between a plurality of clamp arms (5), the connecting ring (10) is provided with external threads along the outer circumference, the threaded fit sleeve is provided with a locking sleeve (9) on the external threads, and the inner side wall of the locking sleeve (9) is abutted against the outer side walls of a plurality of clamp arms (5), so that a convex part (6) on the clamp arms (5) is kept in a jogged state of a concave part (8) of a fixed block (7).

3. A height-adjustable castor as claimed in claim 2, wherein: when the clamping arms (5) are in an initial state, the clamping arms are respectively in an elastic far-away state relatively far away from the outwards expanding relative to the screw holes (4).

4. A height adjustable caster according to claim 3, wherein: the clamping arms (5) can be elastically deformed and integrally connected to the connecting ring (10).

5. A height adjustable caster according to claim 3, wherein: the clamping arms (5) are rotatably arranged on the connecting ring (10), torsional springs are respectively abutted against the rotating connection positions of the clamping arms (5) and the connecting ring (10) in one-to-one correspondence, and the clamping arms (5) are respectively in relatively far away swinging states through the torsional springs.

6. A height adjustable castor according to any one of claims 1 to 5 wherein: the caster body (2) comprises a fixed seat (11) and a U-shaped supporting frame (12) which is rotatably arranged on the fixed seat (11), and a caster (13) which is rotatably arranged on the U-shaped supporting frame (12), and the fixed block (7) and the adjusting screw (3) are coaxially and fixedly arranged at the upper end of the fixed seat (11).

7. The adjustable height caster of claim 6, wherein: u type support frame (12) include U type truckle support (21) and U type shock attenuation support (22), truckle (13) rotate set up on U type shock attenuation support (22), U type truckle support (21) with U type shock attenuation support (22) are articulated, it has a loose axle (23) to articulate on U type shock attenuation support (22), be provided with shock attenuation pole (24) on loose axle (23), U type truckle support (21) are provided with bar groove (25), after the upper end of shock attenuation pole (24) passes bar groove (25) install damping spring (26) on shock attenuation pole (24).