JPH074102U - Fixing device for foot stand with casters - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a fixing device for a foot stand with casters, which allows an operator to easily fix the foot stand with casters by a one-touch operation such as stepping on the foot. [Structure] Hollow case 5 attached to the back of the footrest
And a fixed body 25 pivotally supported so as to be vertically swingable at a lower part of one end side of the case. Inside the case 5, a sliding portion 12 is provided with a head portion 13 protruding from the through hole of the pedestal through the opening portion 8 and a projection portion 14 coming into contact with the main body portion 26 of the fixed body 25 from the opening portion 9.
The sliding member 11 included in the above is housed so as to be slidable in the vertical direction. The guide pin 16 is slidably mounted in the slot 15 formed through the sliding portion of the sliding member in the direction intersecting the sliding direction of the sliding member, and the guide pin 16 slides in the slot. By doing so, the guide pin guide groove having an engaging portion with which the tip portion engages or disengages is formed on the inner surfaces of the case that face each other.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a fixing device for a footrest with casters.

[0002]

[Prior art]

 Conventionally, when fixing a foot stand with casters provided on a table or a desk so that the casters do not function, for example, an adjuster screwed into the foot stand from below is turned to adjust the amount of protrusion above and below the floor surface. It is pressing. However, in such an adjuster mechanism, it takes a long time to rotate until it is pressed against the floor surface, and the operability is poor.

[0003]

[Problems to be solved by the device]

 Therefore, an object of the present invention is to solve the above-mentioned problems of the prior art and to provide a device that can easily fix the footrest with casters by, for example, a one-touch operation in which the operator steps on the foot.

[0004]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention is a fixing device for a foot stand with casters provided on a table or a desk, having an opening on the upper surface that communicates with a through hole provided on the foot stand, and an opening on the lower surface. A hollow case that is attached to the back surface of the pedestal and has a lower end on one end side of the case that is pivotally supported in a vertical direction by a pivot shaft so as to cover the lower surface opening from below. And a fixed body composed of a leg portion which is urged downward by a first urging member and which is provided below the main body portion. A sliding member that has a head that protrudes from the through hole of the pedestal through the top opening in the case and a protrusion that contacts the main body of the fixed body from the bottom opening in the sliding part slides up and down. It is stored freely. A second urging member for urging the fixed body is interposed on the pivot shaft so that the head of the sliding member always projects from the through hole of the pedestal. An elongated hole is formed in the sliding portion of the sliding member, and a guide pin is slidably mounted in the elongated hole in a direction intersecting the sliding direction of the sliding member. Guide pin guide grooves are formed on the inner surfaces of the case that face each other, the guide pin having an engaging portion that engages or disengages at its tip end as the guide pin slides in the elongated hole. The engaging portion of the guide groove pushes down the head of the sliding member protruding from the through hole of the pedestal to slide the sliding member downward, and the protruding portion of the sliding member moves the fixed body to the first position. 2 When the leg of the fixed body presses the floor surface against the biasing force of the first biasing member by swinging downward against the biasing force of the biasing member, the guide pin engages. When the head of the sliding member is further pushed down in this engaged state to slide the sliding member downward, the guide pin is disengaged.

[0005]

[Action]

 To fix the footrest, the head of the sliding member protruding from the through hole of the footrest is pressed. By this depression, the sliding member slides downward in the housing chamber of the case, and the fixed body whose main body is pressed by the tip of the protruding portion swings downward against the urging force of the second urging member. At the same time, the guide pin slides in the guide groove while sliding in the oblong hole, and the legs of the fixed body press the floor surface to resist the urging force of the first urging member. The guide pin reaches the engaging portion. As a result, the leg base is fixed by the leg portion that receives the biasing force of the first biasing member. On the other hand, to return to the non-fixed state, the head of the sliding member is once pushed down to slide the sliding member downward, and the guide pin is disengaged from the engaging portion. After that, when the pressing is stopped, the fixed body receives the urging force of the second urging member and oscillates upward. With this oscillating motion, the sliding member also slides upward, and the guide pin moves in the elongated hole. When the legs of the fixed body move away from the floor and are located above the casters while sliding in the guide groove while sliding, the pedestal is in its original non-fixed state.

[0006]

【Example】

 FIG. 1 is a partially cutaway front view of a foot stand with a caster in which the fixing device of one embodiment of the present invention is attached to the back surface of the foot stand with screws or the like. 1 is a fixing device, 2 is a foot stand, and 3, Reference numeral 3 indicates a caster. The fixing device 1 as described above is provided on each of the footrests 2 which are a pair of front and rear in FIG. The fixing device 1 comprises a hollow case 5 as shown in detail in FIGS. In this example, the case 5 is composed of a pair of front case 5a and rear case 5b which are divided into front and rear halves, both of which are detachably fixed by two left and right tapping screws 6.

An opening 8 communicating with the through hole 7 (FIG. 1) formed in the leg stand 2 is provided on the upper surface of the case 5, and an opening 9 is also provided on the lower surface. The space is formed in the sliding member storage chamber 10. A sliding member 11 is housed in the housing chamber 10 of the case 5 so as to be vertically slidable. The sliding member 11 has a sliding portion 12 in the middle, a head portion 13 protruding from the through hole 7 of the leg base 2 through the opening 8 is provided on the upper portion of the sliding portion 12, and a lower portion is provided on the lower portion. A protrusion 14 that protrudes from the opening 9 is provided. A rectangular oblong hole 15 is formed horizontally through the sliding portion 12 of the sliding member 11 in the left-right direction, and guide pins 16 project both ends of the oblong hole 15 from the oblong hole 15 to the outside. The inside is slidably mounted in a direction orthogonal to the sliding direction of the sliding member 11.

As shown in FIGS. 5 to 10 (the rear case 5b is shown in the same figure), the both side portions of the sliding portion 12 of the sliding member 11 are provided on the front and rear inner side walls of the case 5 which face each other. A pair of guide pieces 18 for guiding are provided vertically at a predetermined interval. On the inner side wall between the two guide pieces 18, there are formed bottomed guide recessed grooves 20 in which both ends of the guide pin 16 are slidably fitted. As shown in the enlarged view of FIGS. 11A and 11B, the guide groove 20 causes the guide pin 16 to move in the slot 15 at right angles to the sliding direction of the sliding member 11 by the sliding movement of the sliding member 11. In addition, the guide groove 20 is slidable as shown by the chain line arrow so that it can slide along the straight side surface parallel to the sliding direction of the sliding member 11 and the tapered shape inclined with respect to the sliding direction of the sliding member 11. An engagement protrusion 22 is formed which is formed by connecting the side surfaces in series and has an engagement recess 21 with which the guide pin 16 engages.

In FIG. 2, reference numeral 25 denotes a fixed body, which is composed of a main body portion 26 and a leg portion 27 provided below the main body portion 26. The main body portion 26 has a lower portion on one end side of the case 5 with an opening 9 of the case 5 downward. It is pivotally supported by a pivot 28 so that it can be swung in the vertical direction so as to cover. The main body portion 26 is composed of a bottom wall 31 and front and rear side walls 32 and 33, and both side walls 32 and 33 are located outside the case 5 and fit into the case 5. A coil spring 35 is interposed on the pivot 28, and as shown by a chain line, the fixed body 25 is constantly urged to cover the opening 9 of the case 5 with the bottom wall 31 of the main body 26. The head 13 of the sliding member 11 that abuts the projection 14 on the upper surface of the bottom wall 31 of the main body 26 is projected from the through hole 7 of the leg base 2. Reference numeral 36 is a recess for guiding the contact of the protrusion 14, and is formed on the upper surface of the bottom wall 31.

The leg portion 27 has an elastic portion 38 made of rubber or the like under a shaft 37 via a plate 39, and the shaft 37 is fitted into a through hole 41 formed in a bottom wall 31 of the main body portion 26. An upper portion and an upper portion are prevented from coming off by a washer 42 and an E ring 43, and a compression spring 45 that constantly urges the elastic portion 38 to project downward is provided around the shaft 37. 46 is a bellows-shaped cover. Reference numeral 48 is a screw hole for the tapping screw 6, and 49 is a screw hole for the pivot shaft 28.

In the fixing device 1 configured as described above, what is indicated by a chain line in FIG. 2 is a non-fixed state of the pedestal 2 that can be moved by the casters 3 and 3. In such a non-fixed state, the guide pin 16 is in the position of the guide groove 20 in FIG. 11 (A), and the biasing force of the spring 35 causes the fixed body 25 to use the pivot 28 as the fulcrum to support the lower surface of the case 5. It swings upward so as to cover the opening 9, and the head portion 13 of the sliding member 11 is in the most protruding state from the through hole 7 of the leg stand 2.

To fix the footrest 2, first, the head 13 of the sliding member 11 protruding from the through hole 7 of the footrest 2 is stepped on from the above state. Then, the sliding portion 12 of the sliding member 11 is guided by the guide pieces 18 on both sides thereof and slides downward, and the main body portion of the fixed body 25 is pressed by the tip of the protrusion 14 of the sliding member 11. 26 is swung downward against the urging force of the spring 35, and the guide pin 16 slides in the elongated hole 15 and slides in the guide groove 20 from the position a in FIG. 11 (A). Slide to the position. When the guide pin 16 is in the position B, the position of the head 13 is as shown by the chain double-dashed line. At this time, the main body portion 26 moves slightly downward along the shaft 37 against the leg portion 27 against the spring 45, and the elastic portion 38 of the leg portion 27 presses against the floor surface against the spring 45. Like Next, when the stepping is stopped, the fixed body 25 receives the urging force of the spring 35 and swings upward as it is, and the sliding member 11 slides upward, and the guide pin 16 moves to From the position, it comes into contact with the engaging projection 22, and after coming into contact with it, it comes into engagement with the engaging recess 21 while sliding in the elongated hole 15. As a result, the fixed body 25 is in the state shown by the solid line, and the leg base 2 is in a state of being fixed by the leg portion 25 which receives the biasing force of the spring 45.

In order to bring it into the non-fixed state again, the head portion 13 of the sliding member 11 is once stepped on. Then, the sliding member 11 slides downward, and the guide pin 16 slides in the elongated hole 15 while being disengaged from the engaging recess 21 of FIG. Slide to the position indicated by. Then, when stepping is stopped, the fixed body 25 swings upward due to the urging force of the spring 35, the sliding member 11 also slides upward due to this swing, and the guide pin 16 moves into the long hole 15 While sliding inside, the inside of the guide groove 20 reaches from the position C in FIG. 11A to the position A. As a result, the fixed body 25 is in the state shown by the alternate long and short dash line, the leg portion 27 is located above the casters 3 and 3 apart from the floor surface, and the head portion 13 is most protruded from the through hole 7 of the leg stand 2. The original non-fixed state that was issued.

In this way, the operator can easily set the footrest 2 in the fixed state or the non-fixed state by a one-touch operation in which the operator simply steps on the head 13 of the sliding member 11 protruding from the through hole 7 of the footrest 2. Can bring Incidentally, the constituent members of this embodiment are not limited to the preferred examples, and the concrete constitution of the case 5 and the fixed body 25, and the detailed constitution such as the long hole 15 and the guide pin 16 attached thereto are the same. It goes without saying that other designs may be used.

[0015]

[Effect of device]

 Since this invention has the above-mentioned structure, the caster-equipped footrest can be easily fixed by a one-touch operation in which the operator steps on the head of the sliding member protruding from the through hole of the footrest with his / her foot, for example. It has the excellent effect of being able to.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view of a foot stand with casters in which a fixing device according to an embodiment of the present invention is attached to the back surface of the foot stand with screws or the like.

FIG. 2 is a vertical sectional front view of the fixing device.

FIG. 3 is a plan view of the fixing device.

FIG. 4 is a side view of the fixing device.

FIG. 5 is a front view of a rear case.

FIG. 6 is a plan view of a rear case.

FIG. 7 is a bottom view of the rear case.

FIG. 8 is a rear view of the rear case.

FIG. 9 is a left side view of the rear case.

FIG. 10 is a right side view of the rear case.

FIG. 11 is an enlarged view of a portion where a guide groove is formed, (A)
Is a front view and (B) is a sectional view taken along the line BB of (A).

[Explanation of symbols]

 1 Fixing device 2 Leg base 3 Caster 5 Case 7 Through hole 8 Upper surface opening 9 Lower surface opening 10 Sliding member storage chamber 11 Sliding member 12 Sliding part 13 Head 14 Projection 15 Long hole 16 Guide pin 20 Guide concave Groove 28 Pivot shaft 35 Coil spring (second biasing member) 45 Compression spring (first biasing member)

Claims (1)

[Scope of utility model registration request] 1. A device for fixing a foot stand with casters, which is provided on a table or a desk, having an opening on the upper surface that communicates with a through hole provided on the foot stand and having an opening on the lower surface. A hollow case attached to the back surface of the footrest, a main body part pivotally supported by a pivot shaft in a lower part of one end side of the case so as to cover the lower surface opening part from below, and the main body. A fixed body composed of a leg portion urged downward by a first urging member at a lower portion of the portion, and a head protruding from the through hole of the leg base through the upper opening in the case; A sliding member having a sliding portion having a protrusion that comes into contact with the main body of the fixed body from the opening on the lower surface is slidably accommodated in the vertical direction,
A second urging member for urging the fixed body is interposed on the pivot shaft so that the head of the sliding member always protrudes from the through hole of the pedestal. An elongated hole is formed, and a guide pin is slidably mounted in the elongated hole in a direction intersecting the sliding direction of the sliding member. The guide pin slides in the elongated hole to engage the tip of the elongated hole. Guide groove for guide pin having an engaging portion that disengages or disengages is formed on the inner surfaces of the case that face each other, and the engaging portion of the guide groove is a sliding member that protrudes from the through hole of the footrest. The head of the sliding member is slid downward, and the protrusion of the sliding member swings the fixed body downward against the urging force of the second urging member. When the portion presses the floor surface to resist the urging force of the first urging member, the guide pin engages, and in this engaged state, the head of the sliding member is further moved. Beat and the slides sliding member downward, caster Tsukeashi stand, characterized in that it is formed in the engagement disengaged position of the guide pin fixing device.