Automatic Braking Caster Device

Abstract

An automatic stop caster device is disclosed that automatically operates the brake according to the load of the equipment, allowing the equipment to be fixed and moved safely and conveniently without manual intervention by the user. The automatic stop type caster device comprises a mounting module that is in close contact with the side of the equipment and supports the lower surface of the equipment, a fork rotatably coupled along the circumferential direction to the lower part of the mounting module, at least one wheel rotatably coupled to the fork and supported on the ground, and a brake rotatably coupled to the mounting module and contacting the wheel to restrict the movement of the wheel or to separate from the wheel, wherein the mounting module lowers when the load of the equipment exceeds a preset load and automatically grounds the brake to the wheel.

Description

Technology Field

[0001] The present invention relates to an automatic stop type caster device. Background Technology

[0002] Generally, casters are installed on the bottom of heavy equipment, such as medical devices for hospitals, precision equipment for industries, and analytical instruments for laboratories, to facilitate movement.

[0003] These casters facilitate the relocation of the equipment, while also being equipped with a brake function for secure fixation during use.

[0004] However, conventional casters had the following problems.

[0005] First, conventional casters were very inconvenient to use because users had to repeat the process of manually locking and unlocking the brake every time. In particular, in medical or industrial settings where equipment needs to be moved frequently, this repetitive brake operation became a factor that significantly reduced work efficiency.

[0006] Second, if the user forgot to operate the brake or operated it incorrectly, there was a high risk of safety accidents due to the unexpected movement of the equipment. In particular, this risk became an even more serious problem for medical devices or analytical equipment that perform precision tasks.

[0007] Third, some casters were equipped with a separate support that contacted the ground along with the brake, making them very cumbersome to use. Since the user had to operate the brake and the support separately, the operation was complex and time-consuming, and if the order of operation was incorrect, it could compromise the safety of the equipment. Prior art literature

[0008] Registered Patent Publication No. 10-0987296 The problem to be solved

[0009] The present invention was devised to solve the above-mentioned problems, and the objective of the present invention is to provide an automatic stop type caster device that automatically operates the brake according to the load of the equipment, thereby allowing the equipment to be fixed and moved safely and conveniently without manual intervention by the user.

[0010] The problems of the present invention are not limited to those mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the description below. means of solving the problem

[0011] An automatic stop type caster device according to an embodiment of the present invention for solving the above problem comprises: a mounting module that is in close contact with the side of the equipment and supports the lower surface of the equipment; a fork rotatably coupled along the circumferential direction to the lower end of the mounting module; at least one wheel rotatably coupled to the fork and supported on the ground; and a brake rotatably coupled to the mounting module and contacting the wheel to restrict the movement of the wheel or to be separated from the wheel; wherein the mounting module lowers when the load of the equipment exceeds a preset load and automatically grounds the brake to the wheel.

[0012] The above mounting module may include: a base supported on the upper surface of the fork; an inner cylinder disposed on the upper part of the base and rotatably coupled to the fork; an outer cylinder disposed on the upper part of the inner cylinder and slidably coupled along the axial direction to the outer surface of the inner cylinder; a mounting plate installed on the outer surface of the outer cylinder, which moves up and down together with the outer cylinder and is bent into an 'L'-shaped structure to support the side and bottom surfaces of the equipment; a compression elastic member disposed between the inner cylinder and the outer cylinder, which elastically supports the outer cylinder along the axial direction, and lowers the outer cylinder by being compressed when the load of the equipment exceeds an allowable load; and a lifting bracket coupled to the outer surface of the outer cylinder, which moves up and down together with the outer cylinder, and to which the brake is rotatably coupled to a part thereof.

[0013] The above mounting module further includes a compression force adjusting part for adjusting the axial compression force of the compression elastic member; the compression force adjusting part may include: a compression force adjusting bolt that penetrates the outer cylinder, the compression elastic member, and the inner cylinder and is rotatably coupled to the outer cylinder and the inner cylinder; and a compression force adjusting nut that is received inside the inner cylinder, fastened to the compression force adjusting bolt, supports the lower end of the compression elastic member, and presses the compression elastic member by rising along the outer surface of the compression force adjusting bolt when the compression force adjusting bolt is rotated in the forward direction, and releases the pressure on the compression elastic member by descending along the outer surface of the compression force adjusting bolt when the compression force adjusting bolt is rotated in the reverse direction.

[0014] The apparatus further includes an auxiliary load support member installed on the fork and positioned in front of the mounting module to elastically support the lower surface of the equipment; wherein the auxiliary load support member may include an extension tray extending from the front end of the fork; a lifting cover positioned on the upper part of the extension tray and moving up and down along the inner surface of the extension tray; a cushioning member positioned between the extension tray and the lifting cover to elastically support the lifting cover; and a cam unit installed on the upper surface of the lifting cover and configured to selectively support the lower surface of the equipment.

[0015] The above buffer member may include: a first buffer member in the shape of a tube formed of an elastic material; and a second buffer member in the shape of a coil accommodated inside the first buffer member.

[0016] The cam unit may include: a cam support bracket installed on the upper surface of the lifting cover; a cam member rotatably coupled to the cam support bracket and, through rotation, contacts the lower surface of the equipment or is separated from the equipment; a cam gear disposed at the end of the cam member and rotates together with the cam member; a cam drive motor installed on the upper surface of the lifting cover and generating rotational force; a drive gear coupled to the end of the cam drive motor and rotated by the cam drive motor; and a power transmission belt connecting the cam gear and the drive gear, and transmitting the rotational force of the drive gear to the cam gear to rotate the cam gear.

[0017] It may further include an auxiliary caster positioned between the wheels, which protrudes forward of the wheels when the auxiliary load support supports the lower surface of the equipment, thereby distributing the vertical load applied by the auxiliary load support to the ground.

[0018] The above auxiliary caster may include: a guide rail installed on the lower surface of the extension tray; a slide fork slidably coupled to the guide rail and stored inside the fork or protruding forward of the fork; and an auxiliary wheel rotatably coupled to the slide fork, supported on the ground, and moved by the slide fork to be stored between the wheels or protruding forward of the wheels.

[0019] The apparatus further includes a height adjustment unit installed in the mounting module to support the mounting plate and to raise and lower the mounting plate to adjust the distance between the auxiliary load support and the lower surface of the equipment; wherein the height adjustment unit may include support units installed on the outer surface of the outer cylinder and spaced apart along the axial direction of the outer cylinder; a height adjustment bolt rotatably coupled to the support units; and a lifting block, a portion of which is coupled to the height adjustment bolt and another portion of which is coupled to the mounting plate, and which raises and lowers along the outer surface of the height adjustment bolt to adjust the height of the mounting plate when the height adjustment bolt is rotated. Effects of the invention

[0020] According to an embodiment of the present invention, when the load of the equipment exceeds a preset load, the mounting module automatically lowers to bring the brake to contact the wheel, so the user does not need to perform a separate brake operation, thereby significantly improving user convenience.

[0021] In addition, since the brake is automatically activated as soon as a load is applied to the equipment, safety can be significantly improved by preventing safety accidents caused by the user's failure to operate the brake.

[0022] In addition, the present invention can control the brake by precisely responding to changes in the load of the equipment through the slide coupling structure of the inner cylinder and the outer cylinder and the compression elastic member, thereby improving the reliability and accuracy of the automatic brake system.

[0023] In addition, since the present invention can stably support the sides and bottom of the equipment through an L-shaped mounting plate, stability can be improved by preventing the equipment from tipping over or shaking.

[0024] In addition, since the compression force of the compression elastic member can be adjusted through the compression force adjustment bolt and compression force adjustment nut of the present invention, the brake operating load can be optimized to accommodate equipment of various weights, thereby improving versatility.

[0025] In addition, since the present invention allows the user to finely adjust the brake operating conditions according to the characteristics of the equipment, the efficiency of the system can be improved by preventing excessive brake operation or brake failure.

[0026] The effects according to the present invention are not limited to those exemplified above, and a wider variety of effects are included within the present invention. Brief explanation of the drawing

[0027] FIG. 1 is a drawing showing an automatic stop type caster device according to an embodiment of the present invention. FIG. 2 is a drawing showing the state in which an auxiliary load support is applied to an automatic stop type caster device according to an embodiment of the present invention. FIG. 3 is a drawing showing the state in which an auxiliary caster is applied to an automatic stop type caster device according to an embodiment of the present invention. FIG. 4 is a drawing showing the state in which a height adjustment unit is applied to an automatic stop type caster device according to an embodiment of the present invention. Specific details for implementing the invention

[0028] Hereinafter, embodiments are described in detail with reference to the attached drawings. However, various modifications may be made to the embodiments, and thus the scope of the patent application is not limited or restricted by these embodiments. It should be understood that all modifications, equivalents, and substitutions to the embodiments are included within the scope of the rights.

[0029] Specific structural or functional descriptions of the embodiments are disclosed for illustrative purposes only and may be modified and implemented in various forms. Accordingly, the embodiments are not limited to the specific disclosed forms, and the scope of this specification includes modifications, equivalents, or substitutions that fall within the technical concept.

[0030] Terms such as "first" or "second" may be used to describe various components, but these terms should be interpreted solely for the purpose of distinguishing one component from another. For example, the first component may be named the second component, and similarly, the second component may be named the first component.

[0031] When it is stated that a component is "connected" to another component, it should be understood that it may be directly connected to or coupled with that other component, or that there may be other components in between.

[0032] The terms used in the embodiments are for illustrative purposes only and should not be interpreted as intended to be limiting. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this specification, terms such as "comprising" or "having" are intended to indicate the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0033] In addition, when describing with reference to the attached drawings, identical components are assigned the same reference numeral regardless of drawing symbols, and redundant descriptions thereof are omitted. In describing the embodiments, if it is determined that a detailed description of related prior art could unnecessarily obscure the essence of the embodiments, such detailed description is omitted.

[0034] The advantages and features of the present invention and the methods for achieving them will become clear by referring to the embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below but may be implemented in various different forms. These embodiments are provided merely to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the scope of the invention, and the present invention is defined only by the scope of the claims.

[0035] In the embodiments of the present invention, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as generally understood by those skilled in the art to which the present invention pertains. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and should not be interpreted in an ideal or overly formal sense unless explicitly defined in the embodiments of the present invention.

[0036] The shapes, sizes, ratios, angles, numbers, etc. disclosed in the drawings for explaining embodiments of the present invention are exemplary, and therefore the present invention is not limited to the depicted details. Furthermore, in describing the present invention, if it is determined that a detailed description of related known technology may unnecessarily obscure the essence of the present invention, such detailed description is omitted. Where terms such as "includes," "has," or "is made up" are used in this specification, other parts may be added unless "only" is used. Where a component is expressed in the singular, it includes cases where it includes the plural unless specifically stated otherwise.

[0037] In interpreting the components, they are interpreted to include a margin of error even in the absence of a separate explicit statement.

[0038] In the case of describing a positional relationship, for example, when the positional relationship between two parts is described using expressions such as 'on,' 'upper,' 'lower,' or 'next to,' one or more other parts may be located between the two parts unless 'immediately' or 'directly' is used.

[0039] When elements or layers are referred to as "on" another element or layer, this includes cases where another layer or element is placed directly on top of or in between. Throughout the specification, the same reference numerals refer to the same components.

[0040] The size and thickness of each component shown in the drawings are illustrated for convenience of explanation, and the present invention is not necessarily limited to the size and thickness of the illustrated components.

[0041] The features of each of the various embodiments of the present invention may be combined or combined with one another, either partially or wholly, and as will be fully understood by those skilled in the art, various technical interlocking and operation are possible, and each embodiment may be implemented independently of one another or together in an interlocking relationship.

[0042] FIG. 1 is a drawing showing an automatic stop type caster device according to an embodiment of the present invention.

[0043] Referring to FIG. 1, an automatic stop type caster device (100) according to an embodiment of the present invention (hereinafter referred to as 'automatic stop type caster device (100)') comprises a mounting module (1) that is in close contact with the side of the equipment (E) and supports the lower surface of the equipment (E), a fork (2) that is rotatably coupled along the circumferential direction to the lower end of the mounting module (1), at least one wheel (3) that is rotatably coupled to the fork (2) and supported on the ground, and a brake (4) that is rotatably coupled to the mounting module (1) and contacts the wheel (3) to restrict the movement of the wheel (3) or to be separated from the wheel (3).

[0044] At this time, the mounting module (1) is configured to descend and automatically bring the brake (4) to the ground on the wheel (3) when the load of the equipment (E) exceeds a preset load.

[0045] The mounting module (1) may include a base (11) supported on the upper surface of the fork (2), an inner cylinder (12) positioned on the upper surface of the base (11) and rotatably coupled to the fork (2), and an outer cylinder (13) positioned on the upper surface of the inner cylinder (12) and slidably coupled along the axial direction to the outer surface of the inner cylinder (12).

[0046] Additionally, the mounting module (1) may further include a mounting plate (14) that is installed on the outer surface of the outer cylinder (13) and moves up and down together with the outer cylinder (13), and is bent into an 'L' shape to support the side and bottom surface of the equipment (E), and a lifting bracket (16) that is coupled to the outer surface of the outer cylinder (13) and moves up and down together with the outer cylinder (13), with a brake (4) rotatably coupled to a part thereof.

[0047] Additionally, the mounting module (1) may further include a compression elastic member (15).

[0048] The compression elastic member (15) is positioned between the inner cylinder (12) and the outer cylinder (13) and can elastically support the outer cylinder (13) along the axial direction.

[0049] Additionally, the compression elastic member (15) can lower the outer cylinder (13) by compressing it when the load of the equipment (E) exceeds the allowable load of the compression elastic member (15).

[0050] The mounting module (1) may further include a compression force adjusting part (17).

[0051] The compression force control unit (17) can control the axial compression force of the compression elastic member (15).

[0052] The compression force adjustment part (17) may include a compression force adjustment bolt (171) and a compression force adjustment nut (172).

[0053] The compression force adjustment bolt (171) can be rotatably coupled to the outer cylinder (13) and the inner cylinder (12) by passing through the outer cylinder (13), the compression elastic member (15), and the inner cylinder (12).

[0054] The compression force adjustment nut (172) can be received inside the inner cylinder (12) and fastened to the compression force adjustment bolt (171). Additionally, the compression force adjustment nut (172) can support the lower end of the compression elastic member (15).

[0055] Accordingly, when the compression force adjustment nut (172) is rotated in the forward direction, it rises along the outer surface of the compression force adjustment bolt (171) and presses the compression elastic member (15), and when the compression force adjustment bolt (171) is rotated in the reverse direction, it descends along the outer surface of the compression force adjustment bolt (171) and releases the pressure on the compression elastic member (15).

[0056] Through this, the compressive force of the compression elastic member (15) can be adjusted, so the operating load of the brake (4) can be optimized to correspond to equipment (E) of various weights, thereby improving versatility. In addition, since the user can finely adjust the operating conditions of the brake (4) according to the characteristics of the equipment (E), excessive operation of the brake (4) or non-operation of the brake (4) can be prevented, thereby improving the efficiency of the system.

[0057] FIG. 2 is a drawing showing the state in which an auxiliary load support is applied to an automatic stop type caster device according to an embodiment of the present invention.

[0058] Referring to FIG. 2, the automatic stop type caster device (100) may further include an auxiliary load support member (5).

[0059] The auxiliary load support member (5) is installed on the fork (2) and positioned in front of the mounting module (1), and can elastically support the lower surface of the equipment (E).

[0060] More specifically, the auxiliary load support member (5) may include an extension tray (51) extending from the front end of the fork (2), a lifting cover (52) positioned on the upper part of the extension tray (51) and moving up and down along the inner surface of the extension tray (51), a cushioning member (53) positioned between the extension tray (51) and the lifting cover (52) to elastically support the lifting cover (52), and a cam unit (54) installed on the upper surface of the lifting cover (52) and configured to selectively support the lower surface of the equipment (E).

[0061] That is, since the front of the equipment (E) can be additionally supported through the auxiliary load support member (5), the front-to-rear balance of the equipment (E) can be maintained, thereby improving stability. In addition, since the shock applied to the equipment (E) can be mitigated and selectively supported through the cushioning member (53) and the cam unit (54), the protection effect of the precision equipment can be improved.

[0062] At this time, the cushioning member (53) may include a tube-shaped first cushioning member (531) formed of an elastic material and a coil-shaped second cushioning member (532) accommodated inside the first cushioning member (531).

[0063] Through this, shocks and vibrations of various sizes can be effectively absorbed, thereby significantly improving the protection performance of the equipment (E). In addition, since the different elastic characteristics of the tubular elastic body and the coil spring can be utilized in combination, optimal cushioning performance can be achieved under a wide range of load conditions.

[0064] Additionally, the cam unit (54) may include a cam support bracket (541) installed on the upper surface of the lifting cover (52), a cam member (542) rotatably coupled to the cam support bracket (541) and, through rotation, contacts the lower surface of the equipment (E) or is separated from the equipment (E), a cam gear (543) disposed at the end of the cam member (542) and rotates together with the cam member (542), a cam drive motor (544) installed on the upper surface of the lifting cover (52) and generating rotational force, a drive gear (545) coupled to the end of the cam drive motor (544) and rotated by the cam drive motor (544), and a power transmission belt (546) connecting the cam gear (543) and the drive gear (545) and transmitting the rotational force of the drive gear (545) to the cam gear (543) to rotate the cam gear (543).

[0065] Through this, the support state of the equipment (E) can be automated, which can greatly improve ease of use. In addition, since the contact pressure of the cam member (542) can be adjusted through precise motor control, stable support can be achieved while preventing excessive pressure from being applied to the equipment (E).

[0066] FIG. 3 is a drawing showing the state in which an auxiliary caster is applied to an automatic stop type caster device according to an embodiment of the present invention.

[0067] Referring to FIG. 3, the automatic stop type caster device (100) may further include an auxiliary caster (6).

[0068] The auxiliary caster (6) is positioned between the wheels (3) and, when the auxiliary load support (5) supports the lower surface of the equipment (E), it protrudes forward of the wheels (3) to distribute the vertical load applied from the auxiliary load support (5) to the ground.

[0069] That is, the auxiliary caster (6) can be automatically protruded in conjunction with the operation of the auxiliary load support (5), thereby effectively distributing the vertical load to the ground, and thereby significantly improving the stability of the equipment (E). In addition, the load distribution effect can be maximized through the cooperation of the wheels (3) and the auxiliary caster (6).

[0070] The auxiliary caster (6) may include a guide rail (61) installed on the lower surface of the extension tray (51), a slide fork (62) that is slidably coupled to the guide rail (61) and is stored inside the fork (2) or protrudes forward of the fork (2), and an auxiliary wheel (63) that is rotatably coupled to the slide fork (62), is supported on the ground, and is moved by the slide fork (62) to be stored between the wheels (3) or protrude forward of the wheels (3).

[0071] FIG. 4 is a drawing showing the state in which a height adjustment unit is applied to an automatic stop type caster device according to an embodiment of the present invention.

[0072] Referring to FIG. 4, the automatic stop type caster device (100) may further include a height adjustment part (7).

[0073] The height adjustment unit (7) is installed in the mounting module (1) to support the mounting plate (14) and can adjust the distance between the auxiliary load support unit (5) and the lower surface of the equipment (E) by raising and lowering the mounting plate (14).

[0074] More specifically, the height adjustment unit (7) may include support units (71) installed on the outer surface of the outer cylinder (13) and spaced apart along the axial direction of the outer cylinder (13), a height adjustment bolt (72) rotatably coupled to the support units (71), and a lifting block (73) which is partially coupled to the height adjustment bolt (72) and partially coupled to the mounting plate (14), and which moves up and down along the outer surface of the height adjustment bolt (72) when the height adjustment bolt (72) is rotated to adjust the height of the mounting plate (14).

[0075] Through this, versatility is improved to accommodate equipment (E) of various heights, and in particular, the distance between the auxiliary load support member (5) and the lower surface of the equipment (E) can be optimized, thereby implementing optimal support conditions suitable for the characteristics of the equipment (E), so that stability and efficiency can be improved simultaneously.

[0076] As such, according to an embodiment of the present invention, when the load of the equipment (E) exceeds a preset load, the mounting module (1) automatically lowers to bring the brake (4) to contact the wheel (3), so that the user does not need to perform a separate brake (4) operation, and thus the convenience of use can be significantly improved.

[0077] In addition, since the brake (4) is automatically operated as soon as a load is applied to the equipment (E), safety can be greatly improved by preventing safety accidents caused by the user's failure to operate the brake (4).

[0078] In addition, the present invention can control the brake (4) by precisely responding to changes in load of the equipment (E) through the slide coupling structure of the inner cylinder (12) and the outer cylinder (13) and the compression elastic member (15), so the reliability and accuracy of the automatic brake system can be improved.

[0079] In addition, the present invention can stably support the side and bottom of the equipment (E) through the L-shaped mounting plate (14), thereby preventing the equipment (E) from tipping over or shaking and improving stability.

[0080] Although embodiments of the present invention have been described in more detail with reference to the attached drawings, the present invention is not necessarily limited to these embodiments and may be modified in various ways within the scope of the technical spirit of the present invention. Accordingly, the embodiments disclosed in the present invention are intended to explain, not limit, the technical spirit of the present invention, and the scope of the technical spirit of the present invention is not limited by these embodiments. Therefore, the embodiments described above should be understood as illustrative in all respects and not restrictive. The scope of protection of the present invention shall be interpreted by the claims below, and all technical spirits within an equivalent scope shall be interpreted as being included within the scope of rights of the present invention.

[0081] Therefore, other implementations, other embodiments, and equivalents to the claims also fall within the scope of the claims set forth below. Explanation of the symbols

[0082] 100. Automatic stop type caster device 1. Mounting Module 11. Bass 12. Inner cylinder 13. Outer Cylinder 14. Mounting plate 15. Compressive elastic member 16. Lifting bracket 17. Compression force adjustment unit 171. Compression adjustment bolt 172. Compression Adjustment Nut 2. Fork 3. Wheel 4. Brake 5. Auxiliary load support 51. Extension Tray 52. Elevator cover 53. Buffer member 531. First buffer member 532. Second buffer member 54. Cam Unit 541. Cam support bracket 542. Cam member 543. Cam gear 544. Cam drive motor 545. Drive gear 546. Power transmission belt 6. Auxiliary Caster 61. Guide Rail 62. Slide Fork 63. Auxiliary Wheel 7. Height adjustment part 71. Support Unit 72. Height adjustment bolt 73. Elevator Block E. Equipment

Claims

Claim 1 A mounting module that is in close contact with the side of the equipment and supports the lower surface of the equipment; a fork rotatably coupled along the circumferential direction to the lower end of the mounting module; and at least one wheel rotatably coupled to the fork and supported on the ground; and a brake rotatably coupled to the mounting module and contacting the wheel to restrict the movement of the wheel or being separated from the wheel; wherein the mounting module comprises: a base supported on the upper surface of the fork; an inner cylinder disposed on the upper part of the base and rotatably coupled to the fork; an outer cylinder disposed on the upper part of the inner cylinder and slidably coupled along the axial direction to the outer surface of the inner cylinder; a mounting plate installed on the outer surface of the outer cylinder, which is raised and lowered together with the outer cylinder and is bent into an 'L'-shaped structure to support the side and lower surface of the equipment; a compression elastic member disposed between the inner cylinder and the outer cylinder, which elastically supports the outer cylinder along the axial direction, and lowers the outer cylinder by being compressed when the load of the equipment exceeds the allowable load; and a lifting bracket coupled to the outer surface of the outer cylinder, which is raised and lowered together with the outer cylinder, and to which the brake is rotatably coupled to a part. and a compression force adjusting part for adjusting the axial compression force of the compression elastic member; wherein the compression force adjusting part comprises: a compression force adjusting bolt that penetrates the outer cylinder, the compression elastic member, and the inner cylinder and is rotatably coupled to the outer cylinder and the inner cylinder; and a compression force adjusting nut that is received inside the inner cylinder, fastened to the compression force adjusting bolt, supports the lower end of the compression elastic member, and pressurizes the compression elastic member by rising along the outer surface of the compression force adjusting bolt when the compression force adjusting bolt is rotated in the forward direction, and releases the pressure on the compression elastic member by descending along the outer surface of the compression force adjusting bolt when the compression force adjusting bolt is rotated in the reverse direction.An automatic stop type caster device comprising, wherein the mounting module lowers when the load of the equipment exceeds the allowable load of the compression elastic member and automatically grounds the brake to the wheel. Claim 2 delete Claim 3 delete Claim 4 The automatic stop type caster device according to claim 1 further comprises: an auxiliary load support member installed on the fork and positioned in front of the mounting module and elastically supporting the lower surface of the equipment; wherein the auxiliary load support member comprises: an extension tray extending from the front end of the fork; a lifting cover positioned on the upper part of the extension tray and moving up and down along the inner surface of the extension tray; a cushioning member positioned between the extension tray and the lifting cover and elastically supporting the lifting cover; and a cam unit installed on the upper surface of the lifting cover and configured to selectively support the lower surface of the equipment. Claim 5 An automatic stop type caster device according to claim 4, wherein the buffer member comprises: a first buffer member in the shape of a tube formed of an elastic material; and a second buffer member in the shape of a coil accommodated inside the first buffer member. Claim 6 In claim 5, the cam unit comprises: a cam support bracket installed on the upper surface of the lifting cover; a cam member rotatably coupled to the cam support bracket and contacting the lower surface of the equipment or being spaced apart from the equipment through rotation; a cam gear disposed at the end of the cam member and rotating together with the cam member; a cam drive motor installed on the upper surface of the lifting cover and generating rotational force; a drive gear coupled to the end of the cam drive motor and rotated by the cam drive motor; and a power transmission belt connecting the cam gear and the drive gear, and transmitting the rotational force of the drive gear to the cam gear to rotate the cam gear; an automatic stop type caster device.

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