KR200345822Y1 - Table lege fold or spread device - Google Patents

Abstract

The present invention is a simple folding structure according to the eccentric rotation operation of the upper leg and can be mounted regardless of the installation position, and relates to the upper leg folding apparatus that does not require separate processing of the folding end according to the folding operation of the upper leg.

In the present invention, in order to fold the upper leg 14 with respect to the bottom of the upper plate 12 to be configured, the bottom plate 21 of the upper leg support 20 is screwed to the bottom of the upper plate 12 The inner circumferential surface of both side plates 25 which are placed in the orthogonal direction at regular intervals with respect to each other forms the folding operation grooves 26 correspondingly and at the same time forms an eccentric shaft hole 27, and the upper leg 14 cut into the squares. The holder piece 32 bent in the same shape as the folded end portion 141 of the cover) is integrally fixed to the cover piece, and both sides of the holder piece 32 can be artificially pressurized due to the folding of the upper leg 14. The folding holder 30 of the metal plate formed so that the elastic operation piece 34 integrally extending outwardly is formed to face each other together with the upper leg 14 with respect to the eccentric shaft hole 27 of the upper leg support 20. Pin shaft (40) to allow eccentric rotation In the state where the upper leg 14 is installed, the elastic operation piece 34 is elastically hung on each folding operation groove 26 of both side plates 25 so that the stable extended state of the upper leg 14 is maintained. It is composed.

Description

Upper leg folding device {Table lege fold or spread device}

The present invention relates to the upper limb folding apparatus, and more particularly, the folding structure according to the eccentric rotation of the upper leg is very simple and can be mounted regardless of the installation position, and does not require separate processing of the folding end according to the folding operation of the upper leg. It relates to a leg folding device.

Conventionally, various types of upper legs have been devised to support images at a certain height from the ground, and have achieved a considerable level of technological development. However, due to the improvement in product quality and convenience of functions, the iron structure of upper legs is It is very complicated and unproductive and uneconomical factors such as the increase in product cost due to the adoption of a large number of parts can not be ignored. Therefore, it is necessary to make a considerable effort in producing a good product that can significantly lower the cost of the product while maintaining the original function of the upper leg.

In view of this point, in the conventionally developed upper leg, the upper leg folding deployment device (each Utility Model Registration No. 223989, 271915, 328631) granted to Lee, Gap-soon in Korea is folded operation of the upper leg according to one lever operation. There are some technical advantages that this is easy, but it contains various structural problems, looking at the problems of the technology with reference to Figures 1 to 4 as follows.

As shown in Figs. 1 to 4, the structure of the conventional upper leg folding deployment apparatus is fixed to the bottom of the upper plate 1 in order to foldably mount the upper leg 2 on the bottom of the upper plate 1. The hoop 3, the fixed piece 4 fixed to the support hoop 3, and the binding claw 5a formed on the rear face with respect to the fixed piece 4 are mutually installed so as to be rotatable. In order to stably support the upper leg (2), the rotating piece (5) and the support piece (5b, 5c) formed on one side and the lower portion, respectively, and the other side of the rotating piece (5) The support piece 6 fixed to the bottom of the top plate and the upper leg 2 mounted on the pivoting piece 5 are folded with respect to the fixing piece 4 and the support piece 6 so as to support the pivoting operation of the upper plate. Penetration is provided in the shaft hole 6a of the support piece 6, the fastening hole 2a of the upper leg 2, and the shaft hole 5d of the rotation piece 4 so that operation is possible. Includes a retaining pin (7).

In addition, the fixing piece (4) and the stop piece (4a) and the spring (8a) in contact with the corresponding surface of the rotating piece (5) in order to prevent excessive spreading and folding of the upper leg (2) installed on the rotating piece (5) (8) is a configuration in which the unfolding and unfolding engagement grooves 4b and 4c are positioned in the orthogonal direction, respectively.

Therefore, the above-described prior art has a support hoop 3 for fixing at least the fixing piece 4 to fold the upper leg 2 with respect to the upper plate 1, the fixing piece 4, and the fixing piece ( 4, the components of the pivoting piece 5 for pivotally supporting the upper leg 2 and the spring 8a for the elastic operation of the support piece 6 and the lever 8 assembled separately are essentially required. In addition, the folded end portion 2a of the upper leg 2 is spherical as shown in FIG. 1 in order to exclude interference caused by the rotation of the upper leg 2 with respect to the fixing piece 4 and the supporting piece 6. It is to be processed in the form of a ball, and at the same time, the corresponding surface of the rotating piece 5 should be molded in the same shape for stable mounting.

That is, when it is described in more detail, the conventional upper leg (2) is made of the same turning radius through each shaft hole (6a, 5a) formed in the central portion of the support piece 6 and the rotating piece (5) through the fastening pin (7) If the folded end 2a of the upper leg 2 is not processed into a spherical shape, it is interfered with the bottom surface of the upper plate 1 due to the rotation and stable folding operation is impossible. There is a bond. Of course, in this case, as shown in FIG. 4, the height of the fastening height H of the upper leg 2 by the fastening pin 7, for example, the pivot height of the pivoting piece 5 with respect to the support piece 6 or the fixing piece 4 is increased. (If the sufficient turning operation radius of the upper leg 2 with respect to the bottom of 10 is secured, it is not necessary to process the folded end portion 2a of the upper leg 2 in spherical shape, but in this case, the upper leg 2 rotates. As the center of operation is increased, various structural problems such as instability of folding operation and relatively large size of each component are generated, which is not realistic.

Further, according to the conventional upper leg folding deployment device structure, the upper leg 2 mounted on the pivoting piece 5 is always in one direction only, for example, folding and unfolding according to the operation of one lever 8 elastically installed with the spring 8a. The lever 8 is pivotally operated only to the position of the binding grooves 4b and 4c, and in this case, when the folding operation is performed in the other direction, the pivot piece 5 is formed on the stop piece 4a formed of the stationary piece 4. ), The folding operation of the upper leg 3 becomes impossible, and in particular, since the fixing piece 4 is fixed to the side wall of the support dolce 3 fixed to the bottom of the upper plate 1, In addition to the configuration of the lever 8 installed on the side or the folding deployment configuration and the operation direction of the upper leg 3, the installation position due to the installation of the upper leg 2 must be restricted. According to each installation location The four corners are divided into left 1, left 2, and right 3, respectively, to be fabricated, assembled and marked individually in the corresponding positions, as well as uniform installation of the upper legs and the upper legs when the folding device is not fixed in the corresponding positions. There is a structural limitation and a problem that folding operation is impossible.

Therefore, according to the structure of the upper limb folding deployment apparatus according to the prior art, as described in detail above, the installation position of the upper leg is limited, due to the nature of the folding deployment structure, and also the problem of manufacturing and assembling the folded deployment components for each position In addition, there are various technical problems, such as an increase in notarization of a product due to an increase in the number of component parts, an increase in product cost, and the need to separately process a leg to prevent rotational interference.

The present invention has been devised to solve such problems in the related art, and an object of the present invention is to solve the separate processing problem of the upper leg according to the eccentric rotation of the upper leg, and also limit the installation position of the upper leg due to the adoption of a plurality of elastic operation pieces. It is possible to improve the product quality by eliminating the need for manufacturing the upper and lower folding device for each position, and to simplify the folding structure due to the reduction of the assembly process and the number of parts, and the stable upper leg while significantly lowering the cost of the product. It is for providing the upper leg folding apparatus which made folding operation possible.

1 and 2 is an assembled perspective view and an extracting perspective view of the configuration of the upper leg folding deployment apparatus according to the conventional design;

3 and 4 are side views showing the assembled state side cross-sectional view and the upper leg folded operation state of the upper leg folding deployment apparatus according to the conventional design shown in FIG.

5 is an exploded perspective view showing the configuration of the upper leg folding apparatus according to the present invention;

6 is an assembled side cross-sectional view of the upper leg folding apparatus according to the present invention;

7 is a side view showing a state of folding operation of the upper leg folding apparatus according to the present invention;

Figure 8 is an excerpt top view showing a state in which the arbitrary expansion is prevented in the folded upper leg according to the present invention.

※ Explanation of symbols on main parts of drawing ※

12: top 14: upper leg

20: upper leg support 21: bottom plate

23: meeting space 24: support

25: side plate 26: folding operation groove

27: eccentric shaft 30: folding holder

32: holder piece 34: elastic operation piece

40: pin shaft 141: folded end

Technical features of the present invention for achieving the above object, in the installation configuration so that the upper leg to be folded operation on the bottom of the upper plate, at a constant interval with respect to the bottom plate of the upper leg support is screwed to the bottom of the upper plate. The inner circumferential surface of the two side plates placed in the orthogonal direction to form a corresponding operation groove for folding, and at the same time to form an eccentric shaft hole, the folded end of the upper leg cut in the square cover the holder piece bent in the same shape integrally The holder for folding of the metal plate is fixed to both sides of the holder piece, the elastic operation piece integrally formed to extend outwardly so as to allow artificial elastic pressing operation according to the upper leg folding to face each other with respect to the eccentric shaft hole of the upper leg support. Install with pin shaft to allow eccentric rotation with upper leg In the state in which the upper leg is unfolded, the elastic operation piece is sufficiently achieved by the upper leg folding device, which is configured to be elastically caught in each folding operation groove of both side plates to maintain a stable unfolded state of the upper leg.

In addition, according to the present invention, the bottom plate of the upper leg support is formed with an eccentric shaft hole is formed in the rotation space to prevent the rotation interference due to the folding of the upper leg, and one side of the rotation space according to the expansion of the upper leg It is preferable that the support hole for the stable support is further formed.

In addition, according to the present invention, it is preferable that the elastic operation piece is further formed with a protrusion-inhibiting spreading piece in contact with the side surfaces of both side plates in order to maintain a stable folded state of the upper leg and to prevent arbitrary spreading. Do.

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

Figure 5 is an exploded perspective view showing the upper leg folding apparatus configuration according to the present invention, Figure 6 is an assembly side cross-sectional view thereof.

As shown in Fig. 5 and Fig. 6, the upper leg lapping apparatus 10 according to the present invention, the upper leg support 20 and the folding holder for installing the upper leg 14 to be folded operationally with respect to the bottom surface of the upper plate 12 ( 30).

According to the present invention, the upper leg 14, the folded end portion 141 of the form that is simply cut into a square is used as it is.

The upper leg support 20 is driven by fixing a plurality of screws 22 to the bottom of the bottom plate 21 to support the upper leg 14 so as to allow eccentric rotation with respect to the upper plate 12. One side of the bottom plate 21 constituting the sphere 20 is formed with a rotation space 23 for excluding the rotational interference due to the folding of the upper leg 14, the other side, especially when the upper leg 14 is unfolded A support piece 24 for stable support of the upper leg 14 according to the eccentric rotation is formed.

The side plates 25 are integrally formed so as to face the bottom plate 21 at opposite sides thereof at regular intervals, and the folding plate holders (to be described later) are formed as inner circumferential surfaces of the side plates 25. The folding operation groove 26 to which the folding operation piece 32 of 30 is elastically latched is formed so that it may oppose in a longitudinal direction.

In addition, both side plates 25 of the upper leg support port 20 are formed so that the eccentric shaft hole 27 is biased to one side by both side plates 25 of the bottom plate 21 on which the rotation space 23 is formed.

The folding holder 30 is integrally fixed with a plurality of screws 31 with respect to the rectangular folding end portion 141 of the upper leg 14, and is made of a metal plate to be folded together with the upper leg 14 with respect to the upper leg support 20. It is formed to be bent, this is a holder piece 32 that is bent in the same shape as the folded end portion 141 of the upper leg 14, and the folding operation piece 34 formed so as to be opposed to both ends of the upper end of the holder piece 32. It includes, and the folding operation piece 34 is formed to be opened outward to enable the bullet operation according to the folding operation of the upper leg (14).

In addition, as the folding operation piece 34, in order to prevent arbitrary spreading during the folding operation of the upper leg 14 as shown in FIG. Is formed. Here, the unfolding restraint piece 36 is not necessarily a protrusion shape, but it will be extremely easy for a person skilled in the art to deform to another shape having the same function.

In addition, as the upper leg 14 and the holder piece 32 of the folding holder 30, the shaft hole 142 (38) corresponding to the eccentric shaft hole 27 formed from the side plate 25 of the upper leg support 20 is provided. The pin shaft 40 is penetrated and supported by each of these axial holes 27, 38, and 142, respectively.

In the present invention, the pin shaft 40 for eccentrically rotating the upper leg 14 with respect to the upper leg support 20 may have a length inclined with respect to both side plates 25 of the upper leg support 20. In addition, a split type may be used, which is assembled to both side plates 15.

Looking at the assembled state of the present invention configured as described above, the folding holder 30 for the folding end portion 141 of the upper leg 14 is driven by a screw 31 to fix integrally. At this time, it is a matter of course that each of the shaft holes 38 and 142 is fixed in a mutually matching state.

Then, the folding holder 30, which is integrally fixed to the upper leg 14, is inserted between the two side plates 25 of the upper leg support 20 which is screwed into the bottom surface of the upper plate 10. In this case, the pin shaft 40 may be assembled so that the eccentric rotation is possible with respect to the eccentric shaft hole 27 formed by the side plate 25.

Therefore, when the upper leg 14 is unfolded with respect to the upper plate 10, the folding operation piece 34 of the folding holder 30 is formed by the both side plates 25 of the upper leg support 20 as shown in FIG. As the elastic grooves are mutually elastically bound to the operation grooves 26, a firm unfolded state is maintained, and the upper leg 14 has its folded end 141 about the pin shaft 40 toward one side of the bottom plate 21. As it is stably supported by the formed support piece 24, the stable support of the unfolded state becomes possible despite the eccentric rotation.

In addition, when the upper leg 14 is to be folded, both of the folding operation pieces 34 interlocked in the folding operation grooves 26 are simultaneously pressed out from the folding operation grooves 26 as shown in FIGS. 6 and 7. Then, when the folding operation in one direction as shown by the dashed line in Fig. 7, the upper leg 14 is eccentrically rotated with respect to the upper leg support 20 through the pin shaft 40 is installed eccentric, and at the same time the operation piece 34 As the projection-formed unfolding restraint 36 formed in the shape is prevented from being unfolded by being interlocked on both sides of the side plate 25 as shown in FIG. 8, the folding of the upper leg 14 is also maintained. .

On the other hand, since the projection restraining piece 36 is installed in a slightly loose state with respect to the folding operation groove 26, the folding holder 30 becomes movable according to the folding operation.

In addition, the folding end portion 141 of the upper leg 14 which is eccentrically rotated with respect to the upper leg support port 20 through the pin shaft 40 during the folding operation of the upper leg 14 is lower than that of the supporting piece 24 on one side. The space 23 is folded and operated without any interference due to the eccentric rotation.

therefore. According to the present invention, since the upper leg 14 is installed so that the upper leg 14 is eccentrically rotated with respect to the upper leg support 20, the upper leg 14 may be used as it is simply cut into a square without processing the folded end portion 141 of the upper leg 14. ), The folding operation becomes possible, and the shortening of the folding operation distance enables the miniaturization of parts.

In addition, since the upper leg 14 is folded using the folding holder 30 formed on both sides of the folding operation piece 34 with respect to the upper leg support 20, only one upper leg folding apparatus is independent of the installation position at all. Even with the uniform installation is possible.

As described above, according to the present invention, by installing the upper leg eccentrically with respect to the upper leg support, it is possible to significantly reduce the assembly process and the production cost by simplifying the folding structure and reducing the number of parts, and also to the square Even if the used upper leg is used as it is, it does not cause any rotational interference through securing the rotation space, and it is uniformly installed for each position with only one device without any limitation of the installation position by using a plurality of elastic operation pieces. It is to have a significant advantage that is possible.

Although the present invention has been described with reference to the accompanying drawings, the present invention is not limited thereto, but many modifications and changes can be made without departing from the scope of the following claims.

Claims (3)

In installing the upper leg 14 so that it can be folded with respect to the bottom face of the upper plate 12: Folding operation grooves 26 are formed on the inner circumferential surface of both side plates 25 which are installed in the orthogonal direction at regular intervals with respect to the bottom plate 21 of the upper leg support 20 which is screwed to the bottom of the top plate 12. And correspondingly to form an eccentric shaft hole 27 at the same time, as the folded end portion 141 of the upper leg 14, cut into the square shape, the holder piece 32 bent in the same shape is fixed to the cover integrally, On both sides of the holder piece 32, the holder for folding of the metal plate formed so that the elastic operation piece 34 integrally formed to extend outwardly so as to enable artificial elastic pressing operation according to the folding of the upper leg 14 30 to the eccentric shaft hole (27) of the upper leg support (20) is installed with the pin shaft (40) to be eccentrically rotatable with the upper leg (14) in the state that the upper leg (14) unfolded the elastic operation piece (34) ) Nails for folding each side plate (25) Becomes jammed elastically into the groove 26 sangdari folding device as claimed hayeoseo configured to maintain the unfolded state of stable sangdari 14. The bottom plate 21 of the upper leg support 20, the rotation space 22 for preventing the rotational interference due to the folding of the upper leg 14 to the site where the eccentric shaft hole 27 is formed Further formed, the upper leg folding device characterized in that the support piece (24) is further protruded to form a stable support according to the expansion of the upper leg (14) to one side of the rotation space (22). According to claim 1 or claim 2, The elastic operation piece 34 to the side and the sides of the both sides of the plate 25 in order to maintain a stable folded state at the time of folding the upper leg 14 and to prevent any unfolding at the same time The upper leg folding device, characterized in that the protrusion restraint piece 36 is formed in contact.