KR20100066191A - Caster - Google Patents

Abstract

An object of the present invention is to provide a caster which is provided in the caster to prevent the failure of the mechanism for leveling (leveling) to be able to stably stop the trolley and the like in the required position to ensure the reliability of the product.

The present invention is connected to the ratchet gear and the ratchet gear which is rotatably installed on the lower part of the connecting member and the connecting member and the connecting member and the lower part of the connecting member which can be pivotally installed on the upper portion of the body on which the moving wheel is installed. When the ratchet gear is protruded and the ratchet gear is rotated, the pedestal is coupled to the adjusting bolt and the adjusting bolt to move up and down according to the degree of rotation of the ratchet gear, and to move below the moving wheel as necessary to prevent the weight from being moved. A caster comprising: a ratchet switch for rotating the ratchet gear in only one direction and an elastic mechanism for providing an elastic force to the ratchet switch, and for securing a space in which the ratchet switch and the elastic mechanism are installed; It is characterized by.

Description

Caster {caster}

The present invention relates to a caster, and more particularly, it is possible to easily adjust the height of the pedestal that can be installed on the bottom surface of the heavy weight to fix the moving wheel to freely transport or direction of the heavy weight as needed In addition, the present invention relates to a caster that prevents a defect of a mechanism for adjusting the height of the pedestal to have reliability of a product.

In general, casters are generally used due to their ease of movement. However, in a device requiring precision, the casters have instability in oscillation, vibration, and horizontality, and thus are provided with pedestals for height adjustment and fixing. The caster related to this is described.

10 is a cross-sectional view showing a conventional caster.

As shown in the drawings, the conventional caster 10 is installed to be rotatable via the bearing (13a) in the upper portion of the body 11 and the body 11, the movable wheel 12 and the movable wheel 12 is installed. Of the handle 16 and the handle 16 which are installed to the lower side of the connecting member 13 and the connecting member 13 so as to be coupled to the bottom of a heavy material, and which can be rotated using a tool such as a spanner. It is coupled to the adjusting bolt 14 and the adjusting bolt 14 to be rotated together by the rotation so that the heavy material can be stably stopped at the required position while lifting up and down by the rotation of the adjusting bolt 14. It consists of a pedestal (15).

The conventional caster rotates the handle 16 in a clockwise or counterclockwise direction, thereby allowing the support bolt 15 to move up and down while the adjustment bolt 14 is rotated. The pedestal 15 is adjusted to be higher or lower than the height of the surface in close contact with the bottom of the moving wheel 12 to be able to firmly fix or move the weight.

However, such a conventional caster has a lot of difficulty in turning the handle 16 to rotate by hand to raise and lower the pedestal 15 has a lot of inconvenience due to the use of a tool such as a spanner.

In order to solve this problem, the present applicant has a "caster" in Patent No. 10-316401, Patent No. 10-327784, Utility Model Registration No. 20-232159 and Utility Model Registration No. 20-286334 Has received a pre-patent. This patent allows the pedestal to be moved up and down with little force without the use of a separate spanner. However, the applicant's prior patent has found a problem in which a defect occurs when deformation occurs in a mechanism for operating the pedestal up and down by an external physical force.

SUMMARY OF THE INVENTION An object of the present invention is to provide a caster which is provided in the caster to prevent the failure of the mechanism for leveling, which makes it possible to stably stop the trolley and the like in the required position, thereby making the product reliable.

The present invention for achieving the above object of the connecting member and the connecting member which is installed to be rotatable via a bearing on the upper portion of the body and the moving wheel and the moving wheel is installed and fixed to the necessary parts, such as heavy objects It is connected to the ratchet gear and the ratchet gear rotatably installed at the lower side and protrudes downward and are coupled to the adjusting bolt and the adjusting bolt rotated together when the ratchet gear is rotated, ascending and descending according to the degree of rotation of the ratchet gear. A caster having a pedestal that moves downwards from a wheel to prevent the heavy object from moving, wherein the caster is installed to be able to rotate at a predetermined angle from side to side around the ratchet gear, and is caught to rotate the ratchet gear only in one direction. Hook so that the first catching part and the ratchet gear can rotate in the other direction Lee is a ratchet switch having a second catch; An elastic mechanism composed of a spring and a circular pin to elastically push the ratchet switch in a selected direction; It is installed so as to be rotatable about the same rotation axis as the ratchet gear, and the upper surface of the case is formed with the ratchet switch installation space and the elastic mechanism installation space portion and the cover to cover the ratchet switch and the elastic mechanism Ratchet gear rotating means comprising a rotating mechanism configured to rotate the ratchet gear by rotating the case; And fixing the case and the cover and fixing rivets and the fixing rivets to maintain the gap between the ratchet switch installation space and the elastic mechanism installation space even when the cover is bent due to a bending deformation in the cover. A ratchet which supports the corresponding portion of the ratchet switch installation space portion to the cover by the support rivet by installing a support rivet through the ratchet switch so that the covered cover is not pressed into the ratchet switch installation space portion and fixed to the case and the cover. And switch protection means.

The elastic device is installed in the resilient device installation space and the spring and the pin can be inserted in any one of the fasteners to form a space that is opened and the fitting is formed in the fitting hole and the fitting protrusion inserted into the fitting hole is the elastic It is characterized in that it further comprises an elastic mechanism protection means for supporting the corresponding portion of the elastic mechanism installation space portion to the cover by engaging the fastener to the fitting protrusion formed to protrude to the instrument installation space portion; do.

The case is characterized in that the handle is installed so as to slide in the case so as to protrude outward.

The case is characterized in that the groove formed to enable the driver to turn.

The object of the present invention is to prevent the failure of the mechanism for the leveling to be provided in the caster to be able to stop the trolley, etc. stably in the required position has the effect of improving the reliability and function of the product.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a cross-sectional view showing the structure of a caster according to the present invention, Figure 2 is a perspective view showing the main components separately provided in the caster according to the present invention, Figure 3 is a perspective view showing a coupling state to the display of Figure 2, FIG. 4 is a half-width perspective view of FIG. 3, FIG. 5 is a perspective view illustrating a state in which a cover is removed from FIG. 3, FIG. 6 is a half-width perspective view of FIG. 5, and FIG. 7 is a plan view of FIG. 5.

As shown in the figure, the caster 100 according to the present invention has a body 101. The moving wheel 102 is installed on one side of the body 101. Since the body 101 receives a large load, a metal casting is mainly used. The moving wheel 102 installed on the body 101 is rotatably installed to receive shaft support therein.

The connecting member 103 is installed on the body 101. The connecting member 103 is rotatable and coupled to the upper side of the body 101 via the bearing (103a), it is to be able to be fixed to the required portion, such as heavy objects. That is, the coupling member 103 can be easily coupled to the balance.

The caster 100 according to the present invention is provided with a ratchet gear 106. The ratchet gear 106 is rotatably installed at the lower side of the connecting member 103 and is installed on the ratchet gear installation groove 132c of the case 132.

As shown, the adjustment bolt 104 is installed at the bottom of the ratchet gear 106. The adjustment bolt 104 is protruded below the ratchet gear 106, the ratchet gear 106 is rotated together when the portion is rotated. The adjusting bolt 104 is formed integrally with the ratchet gear 106 or by forming a groove in the bottom of the ratchet gear 106 so as to receive the torque of the ratchet gear 106, and then fixed with a screw 104a. You may be able to. The adjustment bolt 104 is provided with a pedestal 105 to allow the pedestal 105 to be moved up and down by the rotation of the adjustment bolt 104, or to allow the weight to be fixed in place.

Such a caster 100, the ratchet switch 110, the ratchet switch protection means 140 and the elastic mechanism consisting of a ratchet switch 110, an elastic mechanism 120, a rotation mechanism 130 as a configuration that constitutes a feature of the present invention Protection means 150.

The ratchet switch 110 is installed to be able to rotate a predetermined angle from side to side around the ratchet gear 106, to allow the ratchet gear 106 to rotate in a desired direction. The ratchet switch 110 has a first catching portion 112 which is caught to rotate the ratchet gear 106 in one direction and a second catching portion 114 which is caught to rotate the ratchet gear 106 in the other direction. Equipped with. In addition, the ratchet switch 110 is formed with a reverse rotation boundary projection 116 protruding from the center portion in order to enable the elastic mechanism 120 to be described later to apply a force to the ratchet switch 110 in one selected direction. On both sides of the reverse rotation boundary projection 116 is formed to form a smooth curved surface.

The elastic mechanism 120 is for elastically pushing the ratchet switch 110 in the selected direction, it is composed of a spring 122 for providing an elastic force and a circular pin 124 installed on the spring end. The circular pin 124 is to be operated smoothly when the direction of the ratchet switch 110 is changed, the end contacting the reverse rotation boundary projection 116 is formed in a hemispherical shape. The elastic mechanism 120 is to lengthen the length of the spring 122 and to reduce the winding of the spring 122 to enable the smooth operation of the ratchet switch 110 with a small force.

The pivoting mechanism 130 includes a case 132 and a cover 134 to rotate the ratchet gear 106 by rotating the case 132. The case 132 is rotatably installed around the same rotation axis as the ratchet gear 106, and accommodates the ratchet switch installation space 132a, the elastic mechanism installation space 132b, and the ratchet gear 106 on the upper surface thereof. Ratchet gear installation grooves (132c) for the purpose is formed. In addition, a cover 134 covering the ratchet gear 106, the ratchet switch 110, and the elastic mechanism 120 from an upper surface thereof is installed.

The rotation mechanism 130 is installed on the bottom surface of the case 132 so as to slide the handle 136 to protrude outward, the case 132 can be rotated with a small force. In this case, the support piece 138 may be installed on the bottom of the handle 136 to prevent the handle 136 from being separated.

As shown in the drawing, the caster 100 according to the present invention is provided with a pedestal 105, the pedestal 105 is moved to the lower side of the moving wheel 102, if necessary, a stable posture at a fixed position such as heavy goods or trucks In order to be able to be stopped and, in some cases, to be leveled in the stopped state, the pedestal 105 is coupled to the adjusting bolt 104 to increase the degree of rotation of the ratchet gear 106. It will descend.

The pedestal 105 is such that the first latching portion 112 of the ratchet switch 110 is caught by the ratchet gear 106 as shown in FIG. In this state, the elastic mechanism 120 pushes the ratchet switch 110 clockwise. Then, when the handle 136 is pulled out of the body 101 and rotated clockwise, the torque of the handle 136 is passed through the case 132 and the first catching part 112 of the ratchet switch 110. Is delivered. Accordingly, the ratchet gear 106 is rotated in the clockwise direction, the adjustment bolt 104 is also rotated in the clockwise direction. When the handle 136 is sufficiently rotated in the clockwise direction and then rotated in the counterclockwise direction, the first catching portion 112 of the ratchet switch 110 passes over the ratchet gear 106. Rotating the handle 136 fully counterclockwise and then rotating clockwise again causes the pedestal 105 to rise again. Repeating this operation causes the pedestal 105 coupled to the adjustment bolt 104 to continue to ascend. do. When the pedestal 105 is sufficiently raised, the moving wheel 102 comes into contact with the ground, and the balance can be moved.

In order to lower the pedestal 105 back to the moving wheel 102, the second catching part 114 of the ratchet switch 110 is caught by the ratchet gear 106. At this time, the circular pin 124 of the elastic mechanism 120 acts a force on the ratchet switch 110 in the opposite direction from the beginning while riding over the reverse rotation boundary projection 116 formed to protrude in the center of the ratchet switch 110. Let's go. In this state, when the handle 136 is pulled out and rotated in a clockwise direction, the second catching part 114 may ride over the ratchet gear 106. When the knob 136 is sufficiently rotated in the clockwise direction and then the knob 136 is rotated again in the counterclockwise direction, the torque of the knob 136 is the case 132 and the second latching portion 114 of the ratchet switch 110. And to the ratchet gear 106. Accordingly, the ratchet gear 106 is rotated in the counterclockwise direction, the adjustment bolt 104 is also rotated in the counterclockwise direction, and the pedestal 105 is lowered. The pedestal 105 may be lowered below the wheel 102. By the above operation, the pedestal 105 can be lifted and lowered to fix the heavy object by the movement wheel 102 or the heavy object by the pedestal 105.

Caster 100 according to the present invention is provided with a ratchet switch protection means 140. The ratchet switch protecting means 140 is to prevent the ratchet switch 110 installed in the case 132 to be pressed downward by the deformation of the cover 134 to enable a smooth operation of the ratchet switch, the case ( 132 and fixing rivets 142a to 142c for fixing the cover 134 and a support rivet 144 for supporting the ratchet switch 110. The fixing rivets 142a to 142c fix the case 132 and the cover 134, and the case 132 by fixing the case 132 and the cover 134 together with the support piece 138 in a riveting manner. ) And the cover 134 to maintain a predetermined interval, even when the cover 134 is bent and the cover 134 is bent, the ratchet switch installation space portion 132a and the elastic mechanism installation space portion The interval of 132b can be maintained.

In addition, the support rivet 144 is installed through the ratchet switch 110 to be fixed to the case 132 and the cover 134, so that the cover 134 ratchets even if deformation occurs in the cover 134. The ratchet switch 110 is protected by not being pressed into the switch installation space 132a. That is, by maintaining the gap between the case 132 and the cover 134 by the support rivet 144, the corresponding portion of the ratchet switch installation space portion 132a on the cover 134 by the support rivet cover 134 is prevented from being pressed by the ratchet switch installation space 132a to prevent a malfunction of the ratchet switch 110.

In particular, the present invention is to prevent the bending deformation of the cover 134 by installing the support rivet 144, and to strengthen the structure by giving a resistance force that can withstand the rotational force of the case 132 during leveling Has the advantage that it can.

Caster 100 according to the present invention is provided with an elastic mechanism protection means 150. The elastic mechanism protecting means 150 is installed in the elastic mechanism installation space portion 132b of the case 132 to prevent the cover 134 is pressed. The fixture 152 protects the spring 122 and the circular pin 124 by forming a space in which only one side thereof is opened so that the spring 122 and the circular pin 124 may be sequentially inserted. That is, the spring 122 and the circular pin 124 is protected by inserting the spring 122 and the circular pin 124 into the inside of the fixture 152. In addition, the fitting protrusion 152 forms a fitting hole 152a and the fitting protrusion 154 is formed to protrude into the elastic mechanism installation space 132b so as to be inserted into the fitting hole 152a. By coupling the fastener 152 to the), it is possible to support the corresponding portion of the elastic mechanism installation space portion 132b to the cover 134.

FIG. 8 is a bottom perspective view showing an embodiment of a main part of the caster according to the present invention, and FIG. 9 is a half-width perspective view of FIG. 8.

As shown in the drawings, the embodiment according to the present invention is a configuration for rotating the case 132 described above, so that the case 132 can be directly rotated without installing a handle, the driver in the case 132 There is a difference only in the configuration in which the groove portion 137 is formed to be inserted and rotated. Other configurations are the same as the above-described embodiment. In this embodiment, by rotating the case 132 by inserting a screwdriver into the groove 137, the case 132 may be rotated with a small force, as with the above-described handle. That is, most drivers are provided with a driver so that the driver can be leveled simply by blooming the driver in the groove 137.

According to the present invention, even when the cover 134 is bent by the ratchet switch protecting means 140 and the elastic mechanism protecting means 150, the ratchet switch installing space portion 132a and the elastic mechanism installing space portion 132b. By maintaining a predetermined interval to prevent the malfunction of the ratchet switch 110 to ensure the reliability of the product.

1 is a cross-sectional view showing the structure of a caster according to the present invention,

2 is a perspective view separately showing the main configuration of the caster provided in the present invention,

3 is a perspective view showing a coupling state to the display of FIG.

4 is a half-width perspective view of the display shown in FIG. 3;

5 is a perspective view illustrating a state in which a cover is removed from the display of FIG. 3;

FIG. 6 is a half-width perspective view of FIG. 5;

7 is a plan view of the display of FIG. 5;

8 is a bottom perspective view showing an embodiment of the display of FIG.

9 is a half-width perspective view of the display shown in FIG. 8;

10 is a cross-sectional view showing a conventional caster.

Explanation of symbols on the main parts of the drawings

100-Caster 101-Body

102-Wheel 103-Connecting Member

104-Adjusting Bolt 105-Base

106-Ratchet Gear 110-Ratchet Switch

120-Elastic Mechanism 130-Rotating Mechanism

140-Ratchet switch protection means 150-Elastic mechanism protection means

Claims (4)

It is connected to the ratchet gear and the ratchet gear which are rotatably installed on the upper part of the body where the moving wheel is installed to be able to be fixed to the necessary parts such as heavy objects and the ratchet gear and the ratchet gear which are rotatably installed on the lower part of the body, and the ratchet gear The caster is coupled to the control bolt and the control bolt is rotated when the rotation is rotated, and according to the rotation degree of the ratchet gear, and moved to the lower than the moving wheel as needed to prevent the heavy material is moved to the caster In It is installed to be rotatable about the same rotation axis as the ratchet gear and has an installation space on the upper surface, and is installed to cover the case and the installation space of the case, and the ratchet gear in one direction or the other direction. A ratchet gear rotating means comprising a ratchet switch for allowing only rotation and an elastic mechanism for elastically pushing the ratchet switch only in a selected direction; And The ratchet switch prevents the cover from being pushed into the installation space even when the cover is bent due to bending deformation occurring in the fixing rivets fixing the case and the cover of the ratchet gear rotating means and the cover fixed by the fixing rivets. And a ratchet switch protecting means made of a support rivet supporting the cover corresponding to the installation space by being fixedly installed to the case and the cover. The method of claim 1, wherein the elastic mechanism is formed of a spring and a circular pin, the spring and the circular pin to form a space that only one side of the opening so that can be inserted sequentially, and forming a fitting hole through which the upper and lower parts are penetrated The supporter is installed on the installation space to support the cover, the installation space portion caster, characterized in that the fitting projection to be inserted into the fitting projection formed by protruding the fitting projection that can be inserted into the fitting hole. The caster according to claim 1, wherein a handle is installed on the case so as to slide on the case so as to protrude outward. The caster according to claim 1, wherein a groove is formed in the case so that a screwdriver can be inserted and turned.

Images