CN201256727Y - Positioning device of foldable table rack - Google Patents

Abstract

The utility model discloses a positioning device for a folding table frame. The table frame mainly includes a desktop cross bar, a foot bar and a sliding piece; Wherein the other end of the sliding sheet is provided with a catch and the movable hook is hung on the positioning device of the cross bar. Because the utility model uses one end of the sliding plate to be fixed in a pivoting manner, and the other end adopts a movable buckle and cooperates with a positioning device to position when the table frame is unfolded, so when the sliding plate is installed on the table frame , easy and convenient to install and easy to operate during use; in addition, this sliding piece does not need to be provided with a chute, so its supporting strength is higher than that of the commonly used sliding piece, which ensures the service life of the folding table frame.

Description

Folding table frame positioning device

technical field

The utility model relates to a folding table, in particular to a positioning device for a folding table frame.

Background technique

In the prior art, there are many types of folding tables, as shown in FIG. 1 , which is a typical folding table frame structure. The table frame mainly includes a desktop cross bar 1', a foot bar 2' and a sliding piece 3'. The two ends of the cross bar 1' are pivotally connected to the top of the foot bar 2', and the sliding piece 3' is pivotally connected between them for supporting the foot bar 2'. In order to facilitate folding, one end of the sliding piece 3' is pivotally connected to the cross bar 1' (please refer to Fig. 2), on which there is a chute 31', and the lower end of the chute 31' is provided with a chute that communicates with it and is relatively slippery. Groove 31' is a fixing hole 32' with a large groove diameter, and a special-shaped screw 4' is welded on the foot bar 2', and the nut of the special-shaped screw 4' is provided with a fixing part 41' equivalent in diameter to the above-mentioned fixing hole 32' , the fixing hole 32' is fastened to the fixing part 41', thereby fixing and supporting the foot bar 2', preventing the foot bar 2' from being folded inward. When desiring to fold, the slide 3' is pushed inward, so that its fixing hole 32' breaks away from the fixing portion 41' of the special-shaped screw 4' and is positioned at the screw position, so that the special-shaped screw 4' can be positioned on the slide 3' slide in the sliding groove 31', so that the foot bar 2' can be bent inwards and folded at the bottom of the table.

Looking at the above structure in detail, it can be seen that it is more difficult to install the sliding piece on the folding table frame. The reason is that when the table frame is installed, the sliding piece 3' is pivotally connected to the cross bar 1', and then the special-shaped screw 4' It is welded to the corresponding position of the foot bar 2'; then the cross bar 1' is pivotally connected to the top of the foot bar 2'. And described slide piece 3 ′ is also provided with a mounting hole 33 ′ communicated with the sliding groove 31 ′ above the sliding groove 31 ′, and the mounting hole 33 ′ is larger than the nut of the special-shaped screw 4 ′. After the above-mentioned installation, fold the foot bar 2' inward, and then open the sliding piece 3' to an angle outward, and then use the mounting hole 33' to cover the nut of the special-shaped screw 4', and slide the piece 3' again. Utilizing its elasticity to return to the original shape, the special-shaped screw 4' can be slid into the slide groove 31'. However, in the process of breaking apart the sliding piece 3', it is easy to cause the sliding piece 3' to be permanently bent and deformed due to excessive force, and cannot return to the original straight shape. Corresponding to the screw part of the screw, the fixing hole 32' cannot be clamped on the fixing part 41' of the special-shaped screw 4', so that the sliding piece 3' loses its connection and support, and the whole sliding piece 3' becomes a waste product. Moreover, it is very difficult to make the installation hole 33' of the sliding piece 3' align with the special-shaped screw 4' and insert it, which is not conducive to installation. In addition, since the slide 3' needs to be provided with a slide groove 31', the support strength of the slide 3' is limited, which will affect the service life of the entire table frame.

Utility model content

The purpose of the utility model is to provide a positioning device for a folding table frame, which is easy to install and use, and has the characteristics of ensuring the supporting strength.

For achieving the above object, the solution of the present utility model is:

A positioning device for a folding table frame, the table frame mainly includes a desktop cross bar, a foot bar and a sliding piece; two ends of the cross bar are pivotally connected to the top of the foot bar, and one end of the sliding piece is pivotally connected to the foot bar, wherein The other end is provided with a clasp and the movable hook is hung on the positioning device of the cross bar.

The positioning device is provided with a pin shaft on the inner side of the cross bar, on the pin shaft is pivotally connected a wrench, and the wrench is provided with a matching groove, and the hook of the sliding piece is buckled in this matching groove, and the turning wrench makes the Hook positioning.

A positioning device for a folding table frame. The table frame mainly includes a desktop cross bar, a foot bar and a sliding piece; the two ends of the cross bar are pivotally connected to the top of the foot bar, and one end of the sliding piece is pivotally connected to the cross bar. The other end is provided with a clasp and the movable hook is hung on the positioning device of the foot bar.

The positioning device is provided with a pin shaft on the outside of the foot bar, on the pin shaft is pivotally connected a wrench, and a matching groove is provided on the wrench, and the hook of the sliding piece is buckled in the matching groove, and the turning of the wrench makes the Hook positioning.

After adopting the above scheme, because the utility model uses one end of the sliding plate to be pivoted and fixed, and the other end adopts the mode of movable hasp and cooperates with the positioning device to perform positioning when the table frame is unfolded, so the sliding plate is installed. When it is on the table frame, it is easy to install and easy to operate; in addition, this sliding piece does not need to be provided with a chute, so its supporting strength is higher than that of the commonly used sliding piece, which ensures the service life of the folding table frame.

Description of drawings

Fig. 1 is a structural schematic diagram of a folding table frame in the prior art;

Figure 2 is a partially enlarged view of Figure 1;

Fig. 3 is a schematic diagram of the unfolded structure of the folding table frame of the utility model;

Figure 4 is a partial enlarged view of Figure 3;

Fig. 5 is a schematic diagram of the unfolding and locking structure of the folding table frame of the present invention;

Figure 6 is a partial enlarged view of Figure 5;

Fig. 7 is a schematic diagram of the structure of the folding table frame of the present invention to be unfolded;

Figure 8 is a partially enlarged view of Figure 7;

Fig. 9 is a schematic diagram of the folding structure of the folding table frame of the present invention.

Detailed ways

As shown in FIG. 3 to FIG. 9 , the folding table and table frame disclosed by the utility model is the same as the prior art, and also mainly includes a desktop cross bar 1 , a foot bar 2 and a sliding piece 3 . The two ends of the cross bar 1 are pivotally connected to the top of the foot bar 2. The key of the utility model is that: one end of the sliding plate 3 is pivotally connected to the foot bar 2, and the other end forms a hook 31, corresponding to when the table frame is unfolded. It is fitted with a positioning device A at the position of the cross bar 1. The positioning device is provided with a pin shaft 4 on the inner side of the cross bar 1, and a toggle 5 is pivotally connected to the pin shaft 4. The toggle 5 is provided with a matching Groove 51, another trigger 5 extends a trigger 52.

As shown in Figures 5, 6, 7, and 8, when the utility model unfolds the foot bar 2 to support the table frame, the hook 31 at the other end of the slide plate 3 is buckled in the matching groove 51 of the toggle button 5, Then use the trigger 52 to turn the trigger 5 to displace the position of the matching groove 51 and the hook 31 buckle, so as to prevent the slide 3 from detaching from the cross bar 1, so that the support of the cross bar 1 can be provided to prevent the foot rod 2 Fold inward so that the table frame can be supported.

As shown in Figures 5 and 6 and in conjunction with Figure 9, when you want to fold, reverse the above-mentioned actions, turn the toggle 5 to the initial position, so that the hook 31 of the slider 3 is released from the matching groove 51 of the toggle 5, The sliding piece 3 closes to the foot bar 2 and loses the support to the cross bar 1, so that the foot bar 2 can be bent inwards and folded at the bottom of the table.

Of course, the positioning device A of the present utility model can be arranged on the foot bar 2, and then one end of the sliding plate 3 is pivotally connected to the cross bar 1, and the corresponding table frame is provided with a positioning position at the position where it is matched with the foot bar 2 when unfolded. Device A, the positioning device is provided with a pin 4 on the outside of the foot bar 21, and a trigger 5 is pivotally connected to the pin 4, and a matching groove 51 is provided on the trigger 5, and a trigger 52 is extended from the other trigger 5 . It can also be known to realize the above functions, which will not be described in detail here.

To sum up, because the utility model uses one end of the slide 3 to be pivotally fixed, and the other end adopts a movable buckle and cooperates with the positioning device A to position when the table frame is unfolded, so the slide 3 is When installed on a table frame, the installation is easy and convenient, and it is also convenient to operate; in addition, the sliding piece 3 does not need to be equipped with a chute, so its support strength is higher than that of the commonly used sliding piece, which ensures the use of the folding table frame life.

Claims (4)

1, a kind of folding table frame positioner, this frame mainly comprises desktop cross bar, foot lever and slide plate; These cross bar two ends are articulated in the foot lever top, and slide plate one end is articulated on the foot lever, it is characterized in that: the other end of slide plate is provided with and has contact with and movable hook is hung on the positioner of cross bar.

2, folding table frame positioner as claimed in claim 1, it is characterized in that: positioner is to be provided with bearing pin in the cross bar inboard, is articulated with one on the bearing pin and pulls and turn round, and pulls to turn round to be provided with mating groove, having contact with of slide plate is to be buckled in this mating groove, rotates to pull to turn round to make and has contact with the location.

3, a kind of folding table frame positioner, this frame mainly comprises desktop cross bar, foot lever and slide plate; These cross bar two ends are articulated in the foot lever top, and slide plate one end is articulated on the cross bar, it is characterized in that: the other end of slide plate is provided with and has contact with and movable hook is hung on the positioner of foot lever.

4, folding table frame positioner as claimed in claim 3, it is characterized in that: positioner is to be provided with bearing pin in the foot lever outside, is articulated with one on the bearing pin and pulls and turn round, and pulls to turn round to be provided with mating groove, having contact with of slide plate is to be buckled in this mating groove, rotates to pull to turn round to make and has contact with the location.

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