This patent is about the design of semi-automatic umbrella push-pull rod.
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1. An improved pull rod structure of self-opening umbrella, each pull rod structure includes: a joint made of plastic material, which has a sleeve end for slidably accommodating at least a part of a radial stretcher therein; And an elastic pull rod integrally formed with the joint, wherein the pull rod has a free end forming an installation end installed in the lower nest.
2. The improved pull rod structure of self-opening umbrella according to claim 1 is characterized in that one end of the joint has a shuttle hole matched with the middle nest, so that the joint can be directly installed in the middle nest.
3. The improved pull rod structure of self-opening umbrella according to claim 1, characterized in that the joint is separated from the shuttle hole of the stretching machine installed in the middle nest.
4. The improved pull rod structure of self-opening umbrella according to claim 1 is characterized in that the mounting end of the elastic pull rod is provided with a shuttle hole matched with the lower nest.
5. An improved pull rod structure for automatic umbrella opening, comprising: a joint made of plastic material, which is arranged on a stretcher; And an elastic pull rod integrally formed with the joint, and the other end of the elastic pull rod is an installation end installed in the lower nest; The mounting end of the elastic pull rod comprises a thin rod part integrally formed with the joint, a locking part matched with the positioning groove of the lower nest and a detachment prevention head, wherein the locking part is arranged at the lower end of the thin rod part and has a larger width than the thin rod part; The anti-dropping head is arranged at the bottom of the locking part, and the width of the anti-dropping head is larger than that of the locking part, so as to prevent the locking part from dropping out of the positioning groove of the lower nest.
The technical background is as follows:
Field of invention
The invention relates to an improved pull rod structure of self-opening umbrella, more specifically to a stretcher with a joint, which is made of plastic material and has a soft pull rod integrally formed with it.
Background of the invention
Fig. 1 shows the unfolded state of the prior art self-opening umbrella. As shown in the figure, the shaft 1 1a of a common self-opening umbrella 10a usually has an upper nest 12a, a middle nest 13a and a lower nest 14a installed on it. The spring 15a is sleeved on the part of the shaft 1 1a between the middle nest 65438+ 03a and the lower nest 14a. The middle nest 13a is connected to the stretcher 16a. Each stretcher 16a has a pull rod 162a. Both ends of each pull rod 162a are connected to a stretcher 16a and the lower nest 14a respectively. The stretcher 16a and the pull rod 162a are connected by hinges. For this connection, each stretcher 16a needs a connector 16 1a to be inserted into one of the pull rods 162a. The thread passes through the shuttle hole 162 1a of the pull rod 162a and then locks on the lower nest 14a to connect the pull rod 162a and the lower nest 14a together. Because the joint 16 1a and the pull rod 162a are made of metal materials, holes and grooves are formed on the joint 16 1a and the pull rod 162a to realize the connection with the hinge, and the joint162a is connected with the hinge. It is also inconvenient to assemble. In addition, if components need to be replaced, disassembly is also very troublesome.
Therefore, it is difficult to assemble the self-opening umbrella, the manufacturing of components is very troublesome, and it is also difficult to disassemble if the components need to be replaced. In other words, the above-mentioned self-opening umbrella has inconvenience and disadvantages in actual use. The present invention aims at solving the above problems in the prior art.
Summary of the invention
The main purpose of the present invention is to provide an improved pull rod structure of self-opening umbrella, so as to facilitate the assembly of self-opening umbrella, simplify the manufacture of its components, and make the replacement of components very convenient.
In order to achieve the above purpose, the present invention provides an improved pull rod structure of self-opening umbrella, which comprises a joint made of plastic material and arranged on the pull rod. Each joint has a soft pull rod integrally formed with it. The other end of each soft pull rod has an installation end installed in the lower nest. Because the soft pull rod can be bent for many times, it can replace the complicated pull rod structure in the prior art and simplify the assembly of the self-opening umbrella.
Various objects and advantages of the present invention will be more easily understood from the following detailed description when read in conjunction with the accompanying drawings, in which:
Brief description of drawings
Fig. 1 is a schematic diagram of the pull rod structure of the self-opening umbrella in the prior art;
Fig. 2 shows the unfolded state of the self-opening umbrella of the present invention;
Fig. 3 is a schematic view of the pull rod structure of the present invention;
Fig. 4 is a side view of the mounting end of the flexible pull rod of the present invention;
Fig. 5 is a schematic view showing the connection between the soft pull rod and the lower nest of the present invention; and
Fig. 6 is a schematic diagram of another embodiment of the present invention.
Detailed description of preferred embodiments
As shown in fig. 2 and fig. 3, the present invention provides an improved pull rod structure of self-opening umbrella, in which the joint 13 1 is sleeved on the strut 1 3 of self-opening umbrella1. The connector 13 1 is made of plastic material. The end of each joint 13 1 installed at the middle nest 1 1 has a first shuttle hole131matched with the middle nest1. A thread passes through the first shed 13 1 1, and then is tightly locked in the middle nest 1 1. Each joint 13 1 also has a soft pull rod 132 integrally formed with it. The other end of each flexible pull rod 132 has an installation end installed in the lower nest 12.
As shown in fig. 3 to fig. 5, the mounting end of each flexible tie rod 132 has a thin rod part 132 1, a locking part 1322 and a drop-off prevention head 1323. The thin rod part 132 1 is integrally formed with one of the joints 13 1. The lower end of the thin rod part 132 1 is connected with a locking part with a larger width 1322. The bottom of the locking section 1322 is connected with the anti-dropping head 1323. The detachment prevention head 1323 is wider and flatter than the locking part 1322 to prevent the locking part 1322 from detaching from the lower nest 12. The lower nest 12 has a positioning groove 12 1 to install the soft pull rod 132. Each positioning groove 13 1 has a narrow notch 12 1 1 and a wide groove bottom 12. The width of the wide groove bottom 12 1 1 matches the width of the locking section 1322 of the soft pull rod132, so that the locking section 1322 can be accurately maintained at the wide groove bottom12/kloc. The narrow slot 126543 8+0 1 has an appropriate width, so that the locking part 1322 cannot slide down from the narrow slot 12 1 1, and the thin rod part of the soft pull rod 132 When the soft pull rod 132 is installed in the lower nest 12, When the thin rod part 132 1 of the soft pull rod132 first passes through the narrow slot 12 12 and reaches the bottom of the wide slot1212, the umbrella is automatically opened/. The anti-detachment head 1323 at the bottom of the locking section 1322 can keep the locking section 1322 from disengaging from the positioning groove 121. If it is necessary to disassemble the automatic parachute opening 1, just pull down the thin rod part of the soft pull rod 1321to the wide groove bottom of the lower nest 12 1265438 +02. Then take the thin rod part 132 1 out of the narrow notch 65433. In order to remove the joint 13 1 from the stretcher 13, just remove the first shed131kloc.
Fig. 6 shows another embodiment of the present invention. In the automatic opening umbrella 1, the short connector 13 1' is arranged on each stretcher 13 connected with the middle nest1. The short connector 13 1' is made of plastic material. The short joint 13 1' is separated from the second shed 133' of the stretcher13. The second shed 133' is connected with the middle nest 1 1. Each short joint 13 1' has a soft pull rod 132' integrally formed with it. The other end of each flexible pull rod 132' has a third shuttle hole 134' connected with the lower nest 12. Thus, the improved pull rod structure of the self-opening umbrella of the present invention is formed.
To sum up, through the improved self-opening pull rod structure of the invention, the self-opening umbrella is very easy to assemble. In addition, because the joint and the soft pull rod are made of plastic materials, the manufacturing will be very simple. Therefore, the manufacturing process of components can be simplified and the components can be replaced conveniently. In addition, because the soft pull rods can be bent many times, they can actually replace the complicated pull rod structure of the self-opening umbrella in the prior art.
Although the present invention has been described with reference to preferred embodiments thereof, it should be understood that the invention is not limited to its details. Various substitutions and modifications have been proposed in the foregoing description, and others will occur to those skilled in the art.. Therefore, all these alternatives and modifications are intended to be included within the scope of the invention as defined by the appended claims.