COMBINATION STRUCTURE OF STRAIGHT BAR AND CROSS BAR OF GUARDRAIL

Abstract

A combination structure of a straight bar and a cross bar of a guardrail is to comprise an embedding opening configured at a position where the cross bar provided for the straight bar to be inserted. A pair of buckle plates is configured inside the cross bar and on the two opposite sides of two sides of the embedding opening, the tail end of the buckle plate has a buckle part, and the buckle part is located within the bore diameter projection range of the embedding opening. The two opposite outer walls on the end part of the straight bar corresponding to the two buckle parts are configured with a horizontal snapping slot, and when the straight bar is inserted into the cross bar, the buckle part is embedded into the snapping slot. At the interior of the cross bar, a pair of stopping plates is extending from the inner wall of the cross bar away from the end of the embedding opening and at an adjacent side of the buckle part. The tail end of the stopping plate also falls within the bore diameter projection range of the embedding opening and the stopping plate enables the end part of the straight bar to be supported and positioned. Based on the above configuration, the straight bar and the cross bar of the guardrail can be assembled easily with tight and stable combination and no residual gaps are left.

Description

BACKGROUND OF THE INVENTION

The present invention relates to a combination structure of a straight bar and a cross bar of a guardrail, and more particularly to a straight bar and cross bar combination structure of the guardrail easily to be assembled and having a tight and stable combination to avoid the residual gap left.

DESCRIPTION OF THE RELATED ART

Accordingly, a guardrail is primarily fixed on the edge of a balcony to prevent people from falling, and therefore the stability of the guardrail is worthy of attention. The prior combination of the straight bars and the cross bars is that after the straight bar passes through the cross bar, the straight bar and the cross bar are secured via a screw piece transversely passing through the jointing position thereof. The prior art combination method of using screw pieces to secure the cross bar and straight bar is time-consuming for users and also the head of the screw piece is exposed to cause the drawback of overall appearance.

Another assembly method of a guardrail is an assembly method without screw pieces, as disclosed in China Patent Application No. 202021218998.X (hereinafter referred to as “the prior art”, and the reference numbers in the description are used to facilitate understanding). In the prior art, the upper crossbar 2 and the lower crossbar 3 are both provided with the mounting grooves 6 for receiving the ends of the square tubes 5, a limit sliding bar 12 is fixed on the two inner walls of the notch of the mounting groove 6, and the end side wall of each square tube 5 is provided with a limit sliding groove 13 matching with the limit sliding bar 12, thereby enabling each square tube 5 to be embedded along horizontal direction in a manner of one end of the upper crossbar 2 and the lower crossbar 3 to be aligned with the limit sliding bar 12 via the limit sliding groove 13 so that all the square tubes 5 are evenly distributed between the upper crossbar 2 and the lower crossbar 3, and afterwards, the notch of the mounting grooves 6 are provided with a buckle strip 7 at an equal interval to separate each square tube 5. The above-mentioned prior art has a snap function without requiring screw pieces, but there is a drawback during assembly process, namely, each square tube 5 is pushed to move in horizontal direction from one end of the upper crossbar 2 and the lower crossbar 33 at the time of the limit sliding groove 13) to be embedded and connected with the limit sliding bar 12, and after each square tube 5 is adjusted to be equal distance, a buckle strip 7 is used to separate and fasten the intervals of each square tube 5. Such a structure removes screws to avoid bad appearance, but the assembly takes a lot of time and effort.

In view of the drawback of the above prior art in application, the inventor of the present invention spent time and effort seeking solutions for improvement and finally developed the present invention

SUMMARY OF THE INVENTION

It is a primary objective of the present invention to provide a combination structure of a straight bar and a cross bar of a guardrail easily to be assembled with tight and stable combination to avoid the residual gap left.

The primary feature of the present invention is to install an embedding opening at the inserting position which a cross bar of a guardrail is defined to allow an end part of a straight bar to be inserted into, a pair of buckle plates are configured inside the cross bar and on the two corresponding sides of the embedding opening, wherein a tail end of the buckling plates having a buckle part located within a bore diameter projection range of the embedding opening; the two opposite outer walls of the end parts of the straight bar is provided with a horizontal snapping slot at a position corresponding to the two buckle parts and when the straight bar is inserted to the cross bar, the buckle parts are embedded into the snapping slot to insert and further position the end part of the straight bar and the cross bar, thereby no residual gap to be left after combining the straight bar and the cross bar and having a stability of combination; and, a pair of stopping plates are extending on the inner wall of the cross bar away from the end of the inserting slot and at a position adjacent to the buckle part, the tail end of the stopping plate also locates within the bore diameter projection range of the embedding opening and the distance between the stopping plate and buckle part is equal to the distance from the end part of the straight bar to the snapping slot, and after the straight bar is inserted into the cross bar, the stopping plate is used to support and position the end part of the straight bar. The above-mentioned configuration enables the combination of the straight bar and the cross bar of the guardrail to be easily assembled with tight and stable combination to avoid the residual gap left.

Other features and advantages of the present invention will become apparent from the following description of the invention which refers to the accompanying embodiments and drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view of a combination of a first embodiment of the present invention.

FIG. 2 is an exploded view of a first embodiment of the present invention.

FIG. 2A is a partial enlarged view of 2A part of FIG. 2.

FIG. 2B is a partial enlarged view of 2B part of FIG. 2.

FIG. 2C is a partial enlarged view of 2C part of FIG. 2.

FIG. 2D is a partial enlarged view of 2D part of FIG. 2.

FIG. 2E is a partial enlarged view of 2E part of FIG. 2.

FIG. 3 is a sectional view of 3S-3S section line of FIG. 1.

FIG. 3A is a partial enlarged view of 3A part of FIG. 3.

FIG. 3B is a partial enlarged view of 3B part of FIG. 3.

FIGS. 4, 4A, 4B are sequential views showing the inserting and combination of the straight bar and the lower cross bar in the first embodiment of the present invention.

FIGS. 5, 5A, 5B are sequential views showing the inserting and combination of the straight bar and the upper cross bar in the first embodiment of the present invention.

FIGS. 6, 6A are sequential views showing the combination of the upper cross bar and the upper cover in the first embodiment of the present invention.

FIG. 7 is a sectional view of a second embodiment of the present invention.

FIG. 7A is a partial enlarged view of 7A part of FIG. 7.

FIG. 7B is a partial enlarged view of 7B part of FIG. 7.

DETAILED DESCRIPTION OF EMBODIMENTS OF THE INVENTION

With reference to FIGS. 1˜3, the guardrail 1 according to a first embodiment of the invention comprises a hollow upper cross bar 10 and a hollow lower cross bar 11 (collectively called as cross bars), a plurality of straight bars 12 located between the upper cross bar 10 and the lower cross bar 11, and an upper cover 13 configured on the top surface of the upper cross bar 10 to cover the opening 16 on the top end of the upper cross bar 10.

An embedding opening 101, 111 is configured respectively at the inserting position defined on the bottom surface 100 of the upper cross bar 10 and the top surface 110 of the lower cross bar 10 to enable an upper end 120 and a lower end 121 (collectively called as end part) of the straight bard 12 to be vertically inserted.

On the interior of the upper cross bar 10 and the lower cross bar 11 and at the corresponding sides on two sides of the embedding openings 101, 111, a pair of buckle plates 102, 112 are configured to extend integrally from the inner walls of the upper cross bar 10 and the lower cross bar 11 and the extending direction of the buckle plate 102, 112 is same as the direction of the end part of the straight bar 12 embedded into the interior of the upper cross bar 10 and the lower cross bar 11. The tail ends of the buckle plates 102, 112 respectively have a buckle part 103, 113 and the end part of the buckle parts 103, 113 are located within a bore diameter projection range C of the embedding openings 101, 111 (as shown in FIGS. 4, 5) to enable the pair buckle parts 103, 113 to have elastic clamping force.

The straight bar 12 is configured with a horizontal snapping slot 122 on the two opposite outer walls of the upper end 120 and the lower end 121 corresponding to the two buckle parts 103, 113, and when the upper end 120 and lower end 121 of the straight bar 12 are inserted into the upper cross bar 10 and the lower cross bar 11, the buckle parts 103, 113 are embedded into the snapping slot, thereby positioning the upper end 120 and the lower end 121 of the straight bar 12 with the upper cross bar 10 and the lower cross bar 11 after being inserted which enables no combination residual gaps left after the straight 12 being combined with the upper cross bar 10 and the lower cross bar 11.

A pair of stopping plates 104, 114 extends from the interior of the upper cross bar 10 and the lower cross bar 11 on the adjacent side of the buckle parts 103, 113 and away from the inner walls of the embedding openings 101, 111, the tail ends 105, 115 of the stopping plate 104, 114 also falls within the bore diameter projection range C of the embedding openings 101, 11, and the distance D1 (as shown in FIGS. 4, 5) between the stopping plates 104, 114 and the buckle parts 103, 113 is equal to the distance D2 from the upper end 120 and the lower end 121 of the straight bar 12 to the adjacent snapping slot 122 (D1=D2), and the stopping plates 104, 114 provide a supporting and positioning effect to the upper end 120 and the lower end 121 of the straight bar 12 after the straight bar 12 is inserted into the upper cross bar 10 and the lower cross bar 11, and meanwhile, the buckle parts 103, 113 are well snapped into the interior of the snapping slot 122 to be positioned.

The upper cover 13, as shown in FIGS. 6, 6A, is used to cover the opening 106 on the top end of the upper cross bar 10, thereby avoiding rain water to enter into the upper cross bar 10 and the straight bar 12 from the opening 106. The upper cap 13 is a hollow shape and has a notch 130 on the bottom thereof, the two opposite mouth edges of the notch 130 protrude toward the interior of the notch 130 to form a lower clasp 131 and the inner top wall of the upper cover 13 protrudes downward to form a pair of upper clasps 132, and the upper clasps 132 can snap with the upper wings 107 configured by the opposite mount edges of the opening 106.

As shown in FIGS. 4, 4A, 4B, combining the lower cross bar 11 with the straight bar 12 is to insert the lower end 121 of the straight bar 12 from the embedding opening 111, the lower end 121 of the straight bar 12 push the buckle part 113 outward via the outer wall (as shown in FIG. 4A), and then, the snapping slot 122 on the lower end of the straight bar 12 is aligning with the buckle part 113 to buckle. Meanwhile, the lower end 121 is held by the stopping plate 114 to be positioned (as shown in FIG. 4B). As shown in FIGS. 5, 5A, 5B, combining the upper cross bar 10 with the straight bar 12 is to insert the upper end 120 of the straight bar 12 into the embedding opening 101 of the upper cross bar 10 and the combination process is the same as the foregoing lower cross bar 11 and the straight bar 12, as shown in FIGS. 5A, 5B. As shown in FIGS. 6, 6A, the notch 130 of the upper cover 13 faces directly the top end of the upper cross bar 10 and mutually embed via applying a force, the lower clasp 131 snaps with the two sides of the bottom surface of the upper cross bar 11 and the upper clasp 132 snaps with the upper wing 107, thereby combing the upper cover 13 and the upper cross bar 10 and covering the opening 106.

The upper cross bar 10 and the lower cross bar 11 of the first embodiment have the same structures but only a 180 degrees change is made to the assembly direction, and therefore both of the upper cross bar 10 and the lower cross bar 11 can be manufactured by one mold.

The top end of the upper cross bar 10 of the foregoing first embodiment has an opening 106. The structural design can also be as shown in FIGS. 7, 7A, 7B, namely, the top end of the upper cross bar 10a has a top wall 10b with a closed shape to prevent rain water to enter the upper cross bar 10a, and the top wall 10b can be functioned as the stopping plate 104 of the first embodiment to enable the upper end 120a of the straight bar 12a to contact and position; and, in addition, the upper cross bar 10a overturns 180 degrees to be used as the lower cross bar 11a, the bottom wall 11b of the lower cross bar 11a (i.e., the top wall 10b of the upper cross bar 10a) is a plane shape to hold the lower end 121a of the straight bar 12a. The bottom wall 11b is a plane shape, and if there is a concern that rain water will enter from the inserting gaps between the straight bar 12a and the embedding opening 111a to cause water accumulation inside the lower cross bar 11a, the drainage holes 116 can be drilled on the bottom surface of the lower cross bar 11a (as shown in FIG. 7B), thereby enabling the water inside the lower cross bar 11a to drain from the drainage holes 116. The other structures such as the buckle plates 102a, 112a, buckle parts 103a, 113a, and snapping slot 122a are the same as the first embodiment.

It can be seen from the above descriptions that the present invention at least comprises the following advantages and effects in application.

1. The upper cross bar and the lower cross bar of the present invention have the same structure but only a 180 degrees change is made to the assembly direction. Therefore, both the upper cross bar and the lower cross bar can be manufactured via the same mold to save production cost.

2. The present invention uses the buckle part 103, 113 of the buckle plates 102, 112 to buckle with the snapping slot 122 of the straight bar 12 and holds the upper end 120 and the lower end 121 of the straight bar 12 via the stopping plates 104, 114 to support t to enable the straight bar 12 to combine with the upper cross bar 10 and the lower cross bar 11. The assembly is simple and easy, and the combination is tight and stable, and no combination residual gap is occurred.

In summary, the present invention meets the requirements of novelty, inventiveness and practical applicability, and therefore an application for patent is hereby filed according to the law. Your examination and approval will be highly appreciated.

Claims

1. A combination structure of a straight bar and a cross bar of a guardrail, comprising: an embedding opening is configured at a position where the cross bar providing an end part of the straight bar to be inserted, a pair of buckle plates are configured at a hollow interior of the cross bar and locate at the two opposite sides of the two sides of the embedding opening, and the tail ends of the buckle plates have a buckle part located within a bore diameter projection range of the embedding opening;a horizontal snapping slot is configured on the two opposite outer walls on the end part of the vertical bar and at a position corresponding to the buckle parts, and when the straight bar is inserted into the cross bar, the buckle parts are embedded into the snapping slot; and,a stopping plate is extended from an inner wall of the cross bar located at an adjacent side of the buckle part and away from an end of the embedding opening, a tail end of the stopping plate also falls within the bore diameter projection range of the embedding opening, the distance between the stopping plate and the buckle part is equal to the distance from the end part of the straight bar to the snapping slot, and when the end part of the straight bar is inserted into the cross bar, the end part contacts and is positioned with the stopping plate.

2. The combination structure of the straight bar and the cross bar of the guardrail of claim 1, wherein the buckle plate is formed via the inner wall of the cross bar extending integrally, and the extending direction is the same as the direction which the end part of the straight bar is inserted into the cross bar.

3. The combination structure of the straight bar and the cross bar of the guardrail of claim 1, wherein, when the cross bar is an upper cross bar of the guardrail, the embedding opening is located on a bottom surface of the upper cross bar, and when the cross bar is a lower cross bar of the guardrail, the embedding opening is located on a top surface of the lower cross bar.

4. The combination structure of the straight bar and the cross bar of the guardrail of claim 3, wherein, when a top end of the upper cross bar has an opening, the opening is covered by an upper cover, the upper cover is a hollow shape with a notch on the bottom end, the two opposite mouth edges of the notch protrude toward the interior of the notch to configure two lower clasps, the lower clasps snap with the two sides of the bottom surface of the upper cross bar, a top wall inside the upper cover protrudes downward to form a pair of upper clasp, and the upper clasps snaps with the two upper wings configured on the opposite mouth edges.

5. The combination structure of the straight bar and the cross bar of the guardrail of claim 3, wherein the top end of the upper cross bar has a top wall used as the stopping plate to provide an upper end above the straight bar to contact, and when the upper cross bar is overturned for 180 degrees to be used as the lower cross bar, a bottom wall of the lower cross bar provides the lower end of the straight bar to contact.

6. The combination structure of the straight bar and the cross bar of the guardrail of claim 5, wherein the bottom wall is drilled to have drainage holes.