Folding umbrella middle rod formed by buckling four sections of convex rivets

Abstract

The utility model discloses a folding umbrella middle rod with four sections buckled by convex rivets, which relates to the technical field of folding umbrellas and comprises a first pipe body, a second pipe body, a third pipe body and a fourth pipe body which are sequentially sleeved from top to bottom. Protruding parts are arranged on the inner walls of the lower ends of the first pipe body, the second pipe body and the third pipe body, concave parts are arranged at the positions, corresponding to the protruding parts, of the outer walls of the upper ends of the second pipe body, the third pipe body and the fourth pipe body, and the protruding parts are connected with the corresponding concave parts in a clamped mode. Arc-shaped elastic pieces are arranged at the upper ends of the interiors of the multiple concave parts, the arc-shaped elastic pieces are fixedly connected with the concave parts through connecting mechanisms, and one sides of the arc-shaped elastic pieces abut against the lower sides of the protruding parts. According to the middle rod, the abraded limiting protrusions can be replaced, the whole middle rod does not need to be replaced, materials can be saved, and the replacement cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of folding umbrella, concretely relates to a four-section convex rivet joint folding umbrella middle stick. BACKGROUND

[0002] The middle stick of the umbrella is operated by sectional insertion and middle stick cutting and pressure casting forming cooperation, needs multiple processes to carry out careful processing and batch correction, improves accurate product qualified rate and assembly efficiency, thereby guaranteeing the flexible adjustment and installation convenience of the connecting piece of the sectional receiving end of the middle stick.

[0003] The limiting protrusion and the middle stick body of the conventional four-section convex rivet joint folding umbrella middle stick are integrally formed, therefore after the limiting protrusion wears, the middle stick will be loose, the whole middle stick needs to be replaced, which is very wasteful of materials and has high replacement cost. UTILITY MODEL CONTENTS

[0004] In view of the above problems of the existing four-section convex rivet joint folding umbrella middle stick, the utility model is provided.

[0005] Therefore, the utility model aims at providing a four-section convex rivet joint folding umbrella middle stick, which solves the problem that in the prior art, the limiting protrusion and the middle stick body of the four-section convex rivet joint folding umbrella middle stick are integrally formed, therefore after the limiting protrusion wears, the middle stick will be loose, the whole middle stick needs to be replaced, which is very wasteful of materials and has high replacement cost.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] A four-section convex rivet joint folding umbrella middle stick, comprising a first pipe body, a second pipe body, a third pipe body and a fourth pipe body, the first pipe body, the second pipe body, the third pipe body and the fourth pipe body are sequentially sleeved from top to bottom, the lower end inner wall of the first pipe body, the second pipe body and the third pipe body is provided with a protruding part, the upper end outer wall of the second pipe body, the third pipe body and the fourth pipe body and the position corresponding to the protruding part are provided with a recessed part, a plurality of the protruding parts are clamped with the corresponding recessed parts, the inner upper end of a plurality of the recessed parts is provided with an arc-shaped elastic plate, the arc-shaped elastic plate is fixedly connected with the recessed part through a connecting mechanism, and one side of the arc-shaped elastic plate abuts against the lower side of the protruding part.

[0008] Preferably, the connecting mechanism comprises a wedge-shaped block and a stop bar, a groove is formed in the upper end bottom wall of the recessed part and the position corresponding to the arc-shaped elastic plate, wedge-shaped grooves are formed in the inner walls of both ends of one side of the groove, the wedge-shaped block is clamped in the inside of the corresponding wedge-shaped groove, both ends of the arc-shaped elastic plate are fixedly connected with one side of the corresponding wedge-shaped block, the stop bar is arranged on one side of the two wedge-shaped grooves, a threaded rod is rotatably arranged in the middle part of the groove, and the stop bar is threadedly sleeved with the threaded rod.

[0009] Preferably, the longitudinal section of the baffle and the groove is rectangular.

[0010] Preferably, the wedge-shaped block and the arc-shaped elastic plate are integrally formed.

[0011] Preferably, the surfaces of the first pipe body, the second pipe body, the third pipe body and the fourth pipe body are coated with wear-resistant coating.

[0012] Preferably, the end of the threaded rod away from the wedge-shaped groove is fixedly sleeved with a knob.

[0013] In the above technical solution, the technical effect and advantages provided by the utility model are:

[0014] The utility model discloses, through the arc-shaped elastic plate is pulled to the corresponding convex portion below, the arc-shaped elastic plate elastic reset, can support the convex portion, keep the stability after the first pipe body, the second pipe body, the third pipe body and the fourth pipe body are pulled apart.

[0015] The utility model discloses, through the rotation threaded rod, make the baffle move, make the one side of wedge-shaped groove open, further can pull out the wedge-shaped block horizontally from the wedge-shaped groove, further can dismantle the arc-shaped elastic plate, the convenient wear of arc-shaped elastic plate is individually replaced, can save the material, reduce the maintenance cost. DRAWINGS

[0016] In order to more clearly illustrate the technical scheme in the embodiment or prior art of the present application, the drawings needed in the embodiment will be briefly introduced as follows, and obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained by those skilled in the art according to these drawings.

[0017] Figure 1 It is a structure schematic view of the middle rod of the four-section convex rivet joint folding umbrella proposed by the utility model;

[0018] Figure 2 It is the internal structure schematic view of Figure 1 ;

[0019] Figure 3 It is the side view partial section structure schematic view of Figure 1 ;

[0020] Figure 4 It is the structure enlarged schematic view of partial A portion in Figure 2 ;

[0021] Figure 5 It is the structure enlarged schematic view of partial B portion in Figure 3 .

[0022] Reference signs:

[0023] 1. first tube body; 2, second tube body; 3, third tube body; 4, fourth tube body; 5, protruding part; 6, recessed part; 7, wedge block; 8, groove; 9, threaded rod; 10, arc-shaped elastic plate; 11, blocking strip; 12, wedge-shaped groove. DETAILED DESCRIPTION

[0024] In order for those skilled in the art to better understand the technical scheme of the utility model, the utility model will be further described in detail below with reference to the drawings.

[0025] The utility model discloses a four section convex rivet buckling folding umbrella middle stick.

[0026] Reference Figures 1-5 A four section convex rivet buckling folding umbrella middle stick, including first tube body 1, second tube body 2, third tube body 3 and fourth tube body 4, first tube body 1, second tube body 2, third tube body 3 and fourth tube body 4 are in order from top to bottom and are in order from top to bottom, the surface of first tube body 1, second tube body 2, third tube body 3 and fourth tube body 4 are all coated with wear-resistant coating, improve the wear resistance of first tube body 1, second tube body 2, third tube body 3 and fourth tube body 4, the lower end inner wall of first tube body 1, second tube body 2 and third tube body 3 is provided with protruding part 5, the upper end outer wall of second tube body 2, third tube body 3 and fourth tube body 4 and the position corresponding with protruding part 5 are all provided with recessed part 6, a plurality of protruding parts 5 are all connected with corresponding recessed part 6, the inside upper end of a plurality of recessed parts 6 is all provided with arc-shaped elastic plate, and one side of arc-shaped elastic plate is in abutment with the downside of protruding part 5.

[0027] Reference Figures 1-5 Arc-shaped elastic plate is fixedly connected with recessed part 6 through connecting mechanism, connecting mechanism includes wedge block 7 and blocking strip 11, recessed part 6 upper end bottom wall and the position corresponding with arc-shaped elastic plate 10 are provided with groove 8, and the both ends inner wall of one side of groove 8 is provided with wedge-shaped groove 12, wedge block 7 is connected in the inside of corresponding wedge-shaped groove 12, and the both ends of arc-shaped elastic plate 10 are fixedly connected with one side of corresponding wedge block 7 respectively, wedge block 7 and arc-shaped elastic plate 10 are integrally formed, improve the connecting strength of wedge block 7 and arc-shaped elastic plate 10, blocking strip 11 is in abutment and is arranged on one side of two wedge-shaped grooves 12, the middle part of groove 8 is rotatably provided with threaded rod 9, blocking strip 11 is threadedly sleeved with threaded rod 9, and the end, away from wedge-shaped groove 12, of threaded rod 9 is fixedly sleeved with knob, which is convenient for rotating threaded rod 9, and the longitudinal section of blocking strip 11 and groove 8 is rectangular, so that blocking strip 11 cannot rotate, that is, can stably slide.

[0028] In use, when the arc-shaped elastic plate 10 is pulled to below the corresponding protruding part 5, the arc-shaped elastic plate 10 is elastically reset, that is, the protruding part 5 can be supported, the stability of the first pipe body 1, the second pipe body 2, the third pipe body 3 and the fourth pipe body 4 after being pulled apart is kept, the threaded rod 9 is rotated, the blocking strip 11 is moved, that is, one side of the wedge-shaped groove 12 is opened, then the wedge-shaped block 7 can be pulled out horizontally from the wedge-shaped groove 12, then the arc-shaped elastic plate 10 can be disassembled, the worn arc-shaped elastic plate 10 can be conveniently replaced individually, material can be saved, and maintenance cost is reduced.

[0029] The above only describes certain exemplary embodiments of the present application by way of illustration, and it is needless to say that the described embodiments can be modified in various ways without departing from the spirit and scope of the present application for those skilled in the art. Therefore, the above drawings and description are illustrative in nature and should not be understood as limiting the scope of protection of the claims of the present application.

Claims

1. A four-section hub for a folding umbrella comprising a first tube (1), a second tube (2), a third tube (3) and a fourth tube (4), characterised in that, The first pipe body (1), the second pipe body (2), the third pipe body (3) and the fourth pipe body (4) are sequentially sleeved from top to bottom, the lower end inner wall of the first pipe body (1), the second pipe body (2) and the third pipe body (3) is provided with a protruding part (5), the upper end outer wall of the second pipe body (2), the third pipe body (3) and the fourth pipe body (4) and the position corresponding to the protruding part (5) are provided with a recessed part (6), a plurality of the protruding parts (5) are clamped with the corresponding recessed parts (6), the inner upper end of a plurality of the recessed parts (6) is provided with an arc-shaped elastic plate (10), the arc-shaped elastic plate (10) is fixedly connected with the recessed part (6) through a connecting mechanism, and one side of the arc-shaped elastic plate (10) abuts against the lower side of the protruding part (5).

2. The center pole of the folding umbrella with four-section convex rivet joints according to claim 1, characterized in that, The connecting mechanism comprises a wedge-shaped block (7) and a blocking strip (11), the upper end bottom wall of the recessed part (6) and the position corresponding to the arc-shaped elastic plate (10) are provided with a groove (8), the inner wall of one side of the two ends of the groove (8) is provided with a wedge-shaped groove (12), the wedge-shaped block (7) is clamped in the inside of the corresponding wedge-shaped groove (12), the two ends of the arc-shaped elastic plate (10) are fixedly connected with one side of the corresponding wedge-shaped block (7) respectively, the blocking strip (11) is abutted and arranged on one side of the two wedge-shaped grooves (12), the middle part of the groove (8) is rotatably provided with a threaded rod (9), and the blocking strip (11) is threadedly sleeved with the threaded rod (9).

3. The center pole of the folding umbrella with four-section convex riveted joints according to claim 2, characterized in that, The longitudinal section of the blocking strip (11) and the groove (8) is rectangular.

4. The center pole of the folding umbrella with four-section convex riveted joints according to claim 2, characterized in that, The wedge-shaped block (7) and the arc-shaped elastic plate (10) are integrally formed.

5. The center rod of the folding umbrella with four-section convex riveted joints according to claim 1, characterized in that, The surfaces of the first pipe body (1), the second pipe body (2), the third pipe body (3) and the fourth pipe body (4) are coated with wear-resistant coating.

6. The center rod of the folding umbrella with four-section convex riveted joints according to claim 2, characterized in that, The end of the threaded rod (9) away from the wedge-shaped groove (12) is fixedly sleeved with a knob.

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