JP4335282B2 - High and low adjustable table - Google Patents

Description

Detailed Description of the Invention

〔Technical field〕
The present invention relates to a height adjustable table, and more particularly, to allow a user to easily adjust the height of the table top surface regardless of the load placed on the table top. Adjustable to fit the body shape, adjustable height can be adjusted to suit the body shape of the seated person so that the height of the step platform provided on the table support base can be adjusted For improved tables.

[Background Technology]
Schools, modern offices and industrial environments provide work areas with various types of functional furniture components. These furniture components include work surfaces and table top surfaces used for a variety of purposes, from drafting to writing and word processing functions. Therefore, these surfaces must be able to be supported by a variety of equipment such as typewriters and computer terminals. Also, these surfaces must be able to be adjusted vertically so that various jobs and various users can easily take advantage of them. The same applies to the platform provided on the table support, but the height of the platform must be adjustable so that various users can use it conveniently.

  In particular, such a table is more serious in elementary school, middle school, high school and university. That is, even in the case of classmates taking classes in the same classroom, there are considerable differences in physical conditions among individuals. However, such school equipment tables are manufactured in a standardized size for each stage, taking into account the average physical conditions of many students. For this reason, there was considerable inconvenience for students using school equipment tables that did not fit the body size.

  One type of the above-described height adjustable table was proposed as “table height adjustable” in US Pat. No. 5,289,782 published on March 1, 1994 by John J. Rizzi et al. Sometimes. This is illustrated in FIG. 9 which shows a height adjustable table showing an example of the prior art. As shown in FIG. 9, the conventional table 10 includes a table upper surface 12, a first leg portion 14a coupled to the table upper surface 12, and a first leg portion 14a sandwiched between the first leg portions 14a. A pair of telescoping legs 14 provided with a second leg 14b provided to be movable up and down and a weight means provided between the pair of legs (not shown) And a pair of support bases 18 provided at the lower stage of the second leg portion 14b of the leg 14. However, such a table is a device for adjusting the height of the upper surface of the table, and has to use a counterbalance mechanism equipped with a weight means including a rack, a pinion, a chain and the like. As a result, there have been problems such as a decrease in productivity and incompatibility with mass production due to the complexity of the apparatus. In addition, since the step 19 provided on the table support base cannot be adjusted in height, it is inconvenient for users of various body shapes.

  Next, a “table height adjustment device” has been proposed in Korean Utility Model Registration No. 20-0355945 granted to LIVART Co., Ltd. on July 1, 2004. This is illustrated in FIG. 10 which shows a table height adjustment device showing another example of the prior art. As shown in the figure, the conventional table height adjustment device 20 is guided by sliding with a table 22, a pair of movement support bases 24 projecting downward from the bottom surface of the table 22, and the movement support bases 24 interposed therebetween. Thus, a main support base 26 having a hollow interior and a support base 28 connected to the lower stage of the main support base 26 at a right angle. At this time, a large number of fixing holes 24 a are regularly formed along the longitudinal direction of one side surface of the moving support base 24, and one side surface of the main support base 26 corresponds to one of the plurality of fixing holes 24 a. A hole 26a is formed, and on one side of the main support 26, a fixing knob 29 connected by a fixing band 29a is coupled to the fixing hole 24a through the through hole 26a. However, since the conventional technology of LIVART Co., Ltd. has a configuration in which the fixing knob is removed from the fixing hole of the movable support base and the through hole of the main support base, there is a difficulty in the coupling process. In addition, there was no content at all about the configuration of the platform that could support the user's feet.

[Disclosure of the Invention]
[Problems to be Solved by the Invention]
Therefore, the present invention is for solving the above-mentioned problems, and an object of the present invention is to easily adjust the height of the table top surface by a simple operation of the adjustment knob. An object of the present invention is to provide a height adjustable table that can adjust the height of the upper surface of the table without being completely removed in a state of being sandwiched between the second legs, so that the convenience of operation can be obtained.

  Another object of the present invention is to adjust the height according to the shape of the user so that the convenience of the user can be obtained by adjusting the height of the platform installed on the table support base. To provide a table.

[Means for solving the problems]
In order to achieve the above object, the present invention provides a table upper surface, a first leg connected to the table upper surface, and is contracted and extended in the longitudinal direction between the first leg and the first leg. And comprises a second leg for supporting the table top so that it remains horizontal, one of the first leg and the second leg being provided with an adjustment hole, and the other. Is fixed in contact with the first leg and the second leg by being sandwiched between a leg provided with a large number of continuous adjustment grooves, a nut provided in the adjustment hole, and an adjustment hole at a position facing the nut. A hollow fixing tool with a receiving groove formed on the inner wall of the housing, a compression spring for pressing the fixing tool sandwiched between the receiving groove of the fixing tool, and a tip penetrating the adjusting tool from the adjustment hole to prevent the tip from being detached from the nut The bolt part and the handle part for gripping and rotating with the user's hand are provided. A movable control member composed of an adjustment knob, and when the adjustment knob is at a maximum distance from the leg, the fixing member overcomes the elastic force of the compression spring and moves backward to freely adjust the length of the leg. The fixture provides a high and low adjustable table that can be retracted and extended and is characterized in that when the adjustment knob is fully approached towards the leg, the adjustment knob is used to limit the fluctuation and the leg is fixed. There is.

  Preferably, the fixing knob is fixed to the tip of the bolt portion of the adjustment knob with a fixing pin so as not to come off from the nut.

  In order to achieve the other objects described above, the present invention provides a table upper surface, a pair of intermediate support portions connected to the table upper surface, and a first leg and a first leg connected to each of the intermediate support portions. A pair of retractable and extendable legs including a second leg between which the part can be embraced or lowered, a pair of steps that are coupled to the lower stage of the leg, and an adjustment formed on the second leg of the leg Provided is an elevation control table in which an operation control member that is integrally coupled so as not to be separated into a hole portion and controls the getting on and off of the first leg and a step adjustable between the support portions is provided. There is.

  Preferably, in order to adjust the height of the platform, a support frame is provided between the support portions, and the free end portion of the support frame is bent in an inclined manner toward the second leg portion of the leg, A multi-stage locking tool in which a large number of locking grooves are formed at the free end, and a fixing hole is formed at both ends of the step so as to be positioned at one of the locking grooves of the multi-level locking tool The parts are integrally formed.

〔The invention's effect〕
As described above, the table with adjustable height according to the preferred embodiment of the present invention has a plurality of fixing grooves formed in the first leg connected to the upper surface of the table, and the first leg can be used as the second leg. It is easy to adjust the knob according to the user's body shape by arranging the hollow of the leg so that it can be raised or lowered and controlling the raising or lowering of the first leg by a fixing member provided on the second leg. The effect of adjusting the height of the upper surface of the table can be obtained only by a simple rotation operation. In particular, since the adjustment knob does not come off from the second leg, it is very easy to move.

  In addition, by providing a support frame having a multistage locking portion on the support portion of the leg, the user's body shape can be obtained by selectively sandwiching the step platform in a number of locking grooves formed in the multistage locking device. Thus, the height can be adjusted by a simple operation of selecting and pinching and removing one of the steps in the locking groove of the multistage locking tool.

[Best Mode for Carrying Out the Invention]
Hereinafter, an adjustable table according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 shows an adjustable table according to a preferred embodiment of the present invention. FIG. 2 shows the combined state of the adjustable table of FIG. FIG. 3 shows a front sectional view of the adjustable table of FIG. FIG. 4 is an enlarged view of a portion “A” of FIG. 3 and shows a state where the first leg portion of the leg is locked. FIG. 5 is an enlarged view of a portion “A” in FIG. 3 and shows a state where the first leg portion of the leg is unlocked. FIG. 6 is an enlarged view of a portion “A” in FIG. 3 and shows a state in which the legs can be expanded and contracted.

  Referring to FIGS. 1 to 6, the height-adjustable table 100 of the present invention includes a table upper surface 110, a pair of intermediate support portions 120 connected vertically downward to the bottom surface of the table 110, and the intermediate support portion 120. The lower stage includes a plurality of retractable and extendable legs 130 provided to be vertically adjustable in a vertically downward direction and a plurality of support bases 140 provided at the lower stage of each leg 130.

  In more detail, the table upper surface 110 preferably has a shape having a substantially flat surface.

  Each intermediate support portion 120 is provided so as to face vertically downward on both sides of the bottom surface of the table upper surface 110. Since the intermediate support portions 120 are arranged in a state of being separated from each other, it is preferable to connect the intermediate portions by the upper connecting rod 122.

  The legs 130 are provided with a pair of first legs 132 provided so as to be directed vertically downward to the lower stage of each intermediate support part 120 and a pair of second legs sandwiched between the first legs 132 so as to be movable up and down. Legs 136 are included. The first leg 132 preferably has a number of stop grooves 134 at predetermined intervals around the outer surface. These stop grooves 134 are arranged at regular intervals with respect to each other, but irregular arrangement is possible if necessary. The first leg 132 can be formed as a pair. These first leg portions 132 are arranged in a state of being separated from each other at a predetermined interval. The stop grooves 134 formed in the first leg portions 132 are located in directions facing each other.

  A hollow having an open upper surface is provided in the second leg 136. The first leg 132 is sandwiched in the hollow of the second leg 136, and is vertically raised or lowered. The second leg 136 is provided with at least one adjustment hole 136 a corresponding to one of the stop grooves 134 of the first leg 132. The adjustment hole 136a is completely penetrated from one side of the outer peripheral surface of the second leg 136 to the other side. A lower connecting rod 138 is provided between the second legs 136. One side of the lower connecting rod 138 may be provided with a hole for installing the fixing pin 158 and the like and a means for closing the hole. Further, the lower connecting rod 138 can be applied to other parts of the second leg 136.

  4 to 6, the adjustment hole 136 a of the second leg 136 is provided with a movable control member for controlling the raising or lowering operation of the first leg 132. The movable control member is sandwiched between the nut 150 provided integrally in the portion of the adjustment hole 136a that comes into contact with both ends of the lower connecting rod 138 and the adjustment hole 136a of the second leg 136, and the first leg 132 is stopped. A hollow fixture 152 that is sandwiched and fixed by one of the grooves 134 and has a receiving groove 152a formed on one inner wall thereof, and is pressed between the receiving grooves 152a of the fixture 152 and pushes the fixing tool 152. A compression spring 154 for providing elastic force to the bolt, a bolt portion 156a whose tip is threadedly connected to the nut 150 through the fixing hole 152a from the adjustment hole 136a of the second leg portion 136, and a user's hand. And an adjustment knob 156 provided with a handle 156b for rotating. Here, the bolt 156a of the adjustment knob 156 is fixed to the tip of the bolt 156a with a fixing pin 158 or the like to prevent the nut 150 from coming off. Here, it is preferable to adjust the strength of the compression spring 154 so as to prevent the table upper surface 110 from being suddenly lowered by its own weight.

  In addition, referring to FIGS. 1 to 3, the support base 140 is horizontally disposed at the lower stage of the second leg 136. That is, it is preferable that the support base 140 is arranged at a right angle with respect to the second leg 136 standing vertically. The support stand 140 performs a role of maintaining the table 100 in an upright state in contact with a paper surface or other work surface.

  In addition, it is possible to further install a multi-stage step member that can be adjusted in height between the support bases 140. The footrest member is provided between the support bases 140 so that a free end thereof is inclined toward the second leg 136 of the leg 130, and a bent free end of the support frame 160 is provided. The multi-stage locking device 162 is provided with a plurality of locking grooves 162a provided in a stepped manner on the bottom surface, and includes a multi-step adjustable step 164 sandwiched between the multi-level locking devices 162. In particular, the footrest 164 includes a foot support portion 166 with which a user raises his / her foot and a connecting portion 168 having locking holes 168a on both sides of the foot support portion 166. A number of grooves may be formed on the upper surface of the foot support 166 to prevent slipping when the foot contacts. After passing through the locking hole 168a formed in the connecting portion 168 of the step 164, the connecting portion 168 is fixed to one of the locking grooves 162a of the multi-stage locking device 162. The

  The operation of the height-adjustable table configured as described above will be described in detail with reference to FIGS. 7 and 8 attached.

  FIG. 7 is a side sectional view of the table taken along line BB in FIG. 2 and shows a state in which the height of the table upper surface and the step platform are increased. FIG. 8 is a side sectional view of the table taken along line BB in FIG. 2 and shows a state in which the height of the table upper surface and the step platform are lowered.

  Referring to FIG. 7, when the user of the table 100 has a large body shape, the handle 156 b of the adjustment knob 156 releases the compressed state of the compression spring 154 by first rotating the adjustment knob 156 clockwise or counterclockwise. At the same time, the fixing tool 152 that has been pushed so as not to move is separated at a predetermined interval. Then, the fixing tool 152 moves backward toward the handle portion 156b by an external force, that is, a moving force of the first leg portion 132. At this time, the moving force of the first leg 132 is greater than the elastic force of the compression spring 154. Accordingly, the fixture 152 comes out of the stop groove 134 of the first leg leg 132. At this time, the pressing force by the handle portion 156b of the adjustment knob 156 disappears, and there is a force to push the fixing device 152 toward the stop groove 134 of the first leg portion 132 only by the elastic force of only the compressed soup and 154 ( (See FIGS. 5 and 6). If it does so, the height of the table upper surface 110 can be easily adjusted only with a user's small force. In this state, the table upper surface 110 is pulled high so as to match the user's body shape, and the height is adjusted high.

  Next, the adjustment knob 156 is rotated in the opposite direction. Then, the handle portion 156b of the adjustment knob 156 pushes the compression spring 154, and eventually the fixture 152 is fixed in a state of being sandwiched between the fixing grooves 134 of the first leg portion 132. Here, the first leg 132 is fixed without moving in the hollow of the second leg 136 (see FIG. 4).

  Further, as shown in FIG. 7, the step 164 is moved from the position of the locking groove 162 at the lowermost position (broken line) of the multistage locking tool 162 to the uppermost position (solid line). For this reason, the user performs a simple operation of taking out the step 164 from the locking groove 162a at the lowermost position and sandwiching it with the uppermost position.

  On the other hand, referring to FIG. 8, when the user's body shape is small, as described above, after releasing the locking state of the first leg 132 due to the rotation of the adjustment knob 156, the table upper surface 110 is brought to a required height. get off. Next, the table upper surface 110 is fixed so that the first leg 132 is locked by the rotation of the adjustment knob 156 so as not to move.

  At the same time, the step 164 may be used by moving the step 164 from the uppermost position (broken line) to the lowermost position (solid line) so as to match the body shape of the user.

  As described above, the present invention has been specifically described by the embodiment described above. However, the present invention is not limited to this, and those skilled in the relevant technical field can make modifications and improvements within the scope of ordinary knowledge. .

1 is a partially exploded perspective view of a height adjustable table according to a preferred embodiment of the present invention. FIG. 2 is a combined perspective view of the height adjustable table of FIG. 1. FIG. 2 is a front sectional view of the adjustable table of FIG. 1. FIG. 4 is an enlarged view of a portion “A” of FIG. 3, showing a state where the first leg portion of the leg is locked. FIG. 4 is an enlarged view of a portion “A” of FIG. 3, showing a state where a first leg portion of the leg is unlocked. FIG. 4 is a partially enlarged view of “A” in FIG. 3, showing a state in which a leg can be expanded and contracted and extended. It is a sectional side view of the table by the BB line of FIG. 2, Comprising: It is a figure of the state which made the height of a table upper surface and a step stand high. It is a sectional side view of the table by the BB line of FIG. 2, Comprising: It is a figure of the state which made the height of a table upper surface and a step stand low. It is a perspective view of the table which can adjust height according to an example of a prior art. It is a perspective view of the table height adjustment apparatus which shows the other example of a prior art.

Claims (4)

A table top surface;
The first leg connected to the upper surface of the table is sandwiched between the first leg and can be contracted and extended in the longitudinal direction with the first leg sandwiched, so that the upper surface of the table is kept horizontal. The first leg and the second leg are provided with adjusting holes, and the other is provided with a number of adjusting grooves in succession. Legs
A hollow provided between the nut provided in the adjustment hole, the adjustment hole at a position facing the nut, and fixed in contact with the first leg portion and the second leg portion, and a receiving groove is formed on one inner wall A fixing spring, a compression spring for pressing the fixing tool sandwiched between the receiving grooves of the fixing tool,
From the adjustment knob provided with a handle portion for screwing and rotating with a bolt portion and a user's hand so that the tip is threaded through the adjustment hole and the tip is prevented from being detached from the nut. A movable control member comprising
When the adjustment knob is at a maximum distance from the leg, the fixture can freely contract and extend the length of the leg while moving backward while overcoming the elastic force of the compression spring. The height-adjustable table is characterized in that when the maximum approach is made toward the leg, the fixture is restricted from swinging by the adjustment knob and the leg is fixed.   The height adjustable table according to claim 1, wherein a fixing pin is fixed to a tip of a bolt portion of the adjusting knob so as not to come off from the nut. A table top surface;
A first leg connected to the upper surface of the table. The first leg can be sandwiched between the first leg and the first leg can be sandwiched and contracted and extended in the longitudinal direction. A leg having a plurality of adjustment grooves provided in one of the first leg and the second leg, and a plurality of adjustment grooves provided in the other. When,
A support part connected to the second leg part of the leg to support the second leg part so as to stand vertically;
A step adjustable between the support parts;
A hollow provided between the nut provided in the adjustment hole, the adjustment hole at a position facing the nut, and fixed in contact with the first leg portion and the second leg portion, and a receiving groove is formed on one inner wall A fixing spring, a compression spring for pressing the fixing tool sandwiched between the receiving grooves of the fixing tool,
The adjustment knob includes an adjustment knob which is screwed so as to be prevented from being detached from the nut through the fixing hole from the adjustment hole, and which is provided with a bolt portion and a handle portion to be gripped and rotated by a user's hand. A movable control member,
When the adjustment knob is at a maximum distance from the leg, the fixture can freely contract and extend the length of the leg while moving backward while overcoming the elastic force of the compression spring. The height-adjustable table is characterized in that when the maximum approach is made toward the leg, the fixture is restricted from swinging by the adjustment knob and the leg is fixed.   In order to adjust the height of the step, a support frame is provided between the support portions, and a free end portion of the support frame is bent in an inclined manner toward the second leg portion of the leg, and the support A multi-stage locking tool in which a large number of locking grooves are formed is coupled to the free end of the frame, and fixing holes are provided at both ends of the step so as to be positioned at one of the locking grooves of the multi-level locking tool. 4. The height adjustable table according to claim 3, wherein the formed connecting portion is integrally formed.

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