CN2407786Y

CN2407786Y - Positioning rod structure for pulling force body building device

Info

Publication number: CN2407786Y
Application number: CN 00216258
Authority: CN
Inventors: 郭正次
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-01-21
Filing date: 2000-01-21
Publication date: 2000-11-29
Anticipated expiration: 2010-01-21

Abstract

The utility model relates to a positioning rod structure for a pulling force body building device, which comprises two side rods, a connecting rod and two side covers, wherein, the inner sides of the two side rods are respectively provided with outer screw threads which is screwing locked and connected with inner screw threads on both sides of the connecting rod; the upper parts of the two side rods are respectively provided with a plurality of through holes, the outer sides of the tow side rods are hollow rod bodies respectively, and the outer sides of the hollow rod bodies are respectively provided with a slotted hole. The utility model has the advantages of simple structure, convenient assembly, low cost, small space after disassembly, convenient storage, package and transportation. Besides a positioning rod can be used for matching various motions, elastic strips or a publicly known pulling force body building device can be selected to be positioned on the two side rods for a user to do various motions of pulling forces.

Description

The backstay structure of chest expander

The utility model relates to a kind of backstay structure of chest expander, can be positioned at its two side lever is done multiple posture for the user pulling force motion by existing chest expander in selection elastic strip or the general family.

Present known chest expander is that the both sides by an elastic body 60 respectively link handle 61 as shown in Figure 1, and handle 61 then includes leader's bar 611 and belt body 612, does the motion of various postures but user's both hands grip handle 61 respectively.Because it is simple in structure, cost is low, so has a lot of users to buy use, but its pulling force motion posture that can use is limited, therefore a lot of people should be left unused on one side by known chest expander 6 with regard to not continuing to use after using a period of time, and are quite unfortunate.

The purpose of this utility model is to provide a kind of backstay structure of chest expander, can be positioned at its two side lever is done multiple posture for the user pulling force motion by existing chest expander in selection elastic strip or the general family.

The purpose of this utility model is achieved in that this device includes two side levers, a joining rod and two side covers, and wherein this two side lever has external screw teeth in the inboard respectively, revolves lock with the both sides internal screw thread of joining rod and is connected, and this two side levers top respectively is provided with some through holes; The outside of this two side lever respectively is a hollow rod body, and respectively offers a slotted eye in its outside.

The utlity model has following positive progressive effect:

1, except backstay itself can provide the motion of doing various postures (with reference to figure 6～Fig. 9), also can wear each through hole by the both sides of elastic strip around two side levers that are positioned at this backstay, do the pulling force motion of various postures for the user, the user of existing general known chest expander then can only buy backstay and needn't the elasticity of purchase bar in the family, as long as the handle of the both sides of known chest expander is positioned at the side of two side levers of backstay, the pulling force motion of multiple posture can be done, and the purpose of known chest expander in the abundant utilization man and cost saving can be reached again.

2, can wear around each through hole of two side levers of backstay by elastic strip, and reach the purpose that the user can adjust Len req easily.

3, assembly simple in structure is easy, and relative cost is low, and two side levers and joining rod assembly or dismounting easily, and does not take up space again after the dismounting, can be convenient to store, pack and transportation.

Below accompanying drawing of the present utility model is done a simple declaration:

Fig. 1 is the stereogram of known chest expander.

Fig. 2 is the three-dimensional exploded view of the utility model embodiment.

Fig. 3 is the three-dimensional combination figure of the utility model embodiment.

Fig. 4 is that the utility model embodiment wherein installs the three-dimensional combination figure of known chest expander in both sides.

Fig. 5 is the part schematic perspective view that the utility model embodiment installs known chest expander.

Fig. 6 is the user mode reference diagram of the utility model embodiment.

Fig. 7 is another user mode reference diagram of the utility model embodiment.

Fig. 8 is another user mode reference diagram of the utility model embodiment.

Fig. 9 is another user mode reference diagram of the utility model embodiment.

Figure 10 is another user mode reference diagram of the utility model embodiment.

Figure 11 is another user mode reference diagram of the utility model embodiment.

Figure 12 is another user mode reference diagram of the utility model embodiment.

Figure 13 is another user mode reference diagram of the utility model embodiment.

Figure 14 is another user mode reference diagram of the utility model embodiment.

Figure 15 is another user mode reference diagram of the utility model embodiment.

Figure 16 is another user mode reference diagram of the utility model embodiment.

Figure 17 is another user mode reference diagram of the utility model embodiment.

Provide one of the utility model embodiment preferably below in conjunction with accompanying drawing:

As Fig. 2～shown in Figure 5, the backstay structure of a kind of chest expander of the utility model, include two side levers 1, a joining rod 2, two side covers 3, wherein this two side lever 1 has external screw teeth 11 respectively in the inboard, can be respectively for revolving the both sides internal screw thread 21 of locking joining rod 2, this two side levers, 1 top then respectively is provided with some through holes 12, can supply the both sides 41 of the elastic strip 4 of predetermined length to wear respectively around the location, for the user do various postures pulling force motion (please refer to Figure 10～Figure 13), and by this elastic strip 4 wear around length can adjust the required length of user relatively; In addition, the outside of this two side lever 1 respectively is a hollow rod body, and each offers a slotted eye 13 at its outboard end, the user can not use aforementioned elastic strip and directly the handlebar stem 511 of two handles 51 of general known chest expander 5 be inserted, the slotted eye 13 of aforementioned two side levers 1 can embed (with reference to figure 5) for the belt body 512 of this handle 51, with can finishing location (with reference to figure 4) in the outside of two side levers 1 by two side covers, 3 cover caps, and then the pulling force motion that also is available for users to do various postures is (with reference to Figure 14～Figure 17).

In addition, aforesaid elastic strip 4 also can provide different flexible elastic strips to select for use for the user.

Claims

1, a kind of backstay structure of chest expander, it is characterized in that this device includes two side levers, a joining rod and two side covers, wherein this two side lever has external screw teeth in the inboard respectively, revolve lock with the both sides internal screw thread of joining rod and be connected, this two side levers top respectively is provided with some through holes.

2, the backstay structure of chest expander according to claim 1 is characterized in that the outside of this two side lever respectively is hollow rod body, and respectively offers a slotted eye in its outside.