阅读说明：本技术 一种拉力器 (Chest expander ) 是由 李�昊 陈尚 李招弟 于 2019-09-27 设计创作，主要内容包括：本发明公开了一种拉力器,包括拉力弹簧部分,所述拉力弹簧部分的两端分别设有第一把手和连接板体,所述连接板体上设有拉力传感器,所述拉力传感器和拉力弹簧部分关于连接板体对称设置,所述拉力传感器的另外一端设有第二把手,所述第二把手上设有显示装置,所述显示装置和拉力传感器之间电连接,使用方便,方便使用者看使用了多大的拉力,具有很高的实用价值和商业价值,值得推广。(The invention discloses a chest expander, which comprises a tension spring part, wherein a first handle and a connecting plate body are respectively arranged at two ends of the tension spring part, a tension sensor is arranged on the connecting plate body, the tension sensor and the tension spring part are symmetrically arranged about the connecting plate body, a second handle is arranged at the other end of the tension sensor, a display device is arranged on the second handle, the display device and the tension sensor are electrically connected, the chest expander is convenient to use, a user can conveniently see how much tension is used, and the chest expander has high practical value and commercial value and is worthy of popularization.)

1. A chest expander is characterized in that: the novel tension spring comprises a tension spring part, wherein a first handle (1) and a connecting plate body (2) are arranged at the two ends of the tension spring part respectively, a tension sensor (3) is arranged on the connecting plate body (2), the tension sensor (3) and the tension spring part are symmetrically arranged relative to the connecting plate body (2), a second handle (4) is arranged at the other end of the tension sensor (3), a display device (5) is arranged on the second handle (4), and the display device (5) and the tension sensor (3) are electrically connected with each other.

2. A chest expander as claimed in claim 1, wherein: the tension spring part comprises a first tension spring (6), a second tension spring (7), a third tension spring (8) and a fourth tension spring (9), and the first tension spring (6), the second tension spring (7), the third tension spring (8) and the fourth tension spring (9) are equal in length and are arranged in parallel.

3. A chest expander as claimed in claim 1, wherein: the first handle (1) is provided with a first safety lace (10).

4. A chest expander as claimed in claim 1, wherein: and a second safety lace (11) is arranged on the second handle (4).

5. A chest expander as claimed in claim 1, wherein: the spring part and the connecting plate body (2) are fixed by welding.

6. A chest expander as claimed in claim 1, wherein: the spring part and the first handle (1) are fixed by welding.

7. A chest expander as claimed in claim 1, wherein: the first handle (1) is made of stainless steel.

8. A chest expander as claimed in claim 1, wherein: the second handle (4) is made of stainless steel.

9. A chest expander as claimed in claim 1, wherein: and a chip and a battery are arranged in the display device (5).

10. A chest expander as claimed in claim 2, wherein: the first tension spring (6), the second tension spring (7), the third tension spring (8) and the fourth tension spring (9) are all made of spring steel.

Technical Field

The invention relates to fitness equipment, in particular to a chest expander.

Background

Gymnastics is a sports item, such as various bare-handed gymnastics, rhythm exercises, gymnastics and various self-resistance actions, and the gymnastics can enhance strength and flexibility, increase endurance, improve coordination and control the abilities of all parts of the body, thereby strengthening the body. If the aim of relieving the stress is to be achieved, the exercise is performed for 3 times in at least one week.

The heart can be exercised by swimming, fast walking, jogging, cycling and all aerobic exercises. Aerobic exercise has many benefits: can exercise heart and lung, enhance circulation system function, burn fat, increase vital capacity, lower blood pressure, prevent diabetes, and reduce heart disease.

The chest developer is one kind of exerciser suitable for public health exercise. The advantage of using the chest developer to do exercise is that: the biceps brachii muscle is a muscle with two muscle heads, and its main function is to bend the arm. In the case of arm curl, the other muscle, triceps brachii, is also used.

However, the humerus muscle can be fully exercised only when some forearm lifting exercises are performed, such as the bending of the high-position chest developer or the bending of the reverse high-position chest developer. In addition, the main muscle of the forearm, brachial flexor, plays a role in the flexion, and the lateral bending of the chest expander strengthens the brachial flexor.

The traditional chest developer has simple structure and single function, and can not meet the use requirements of users.

Disclosure of Invention

The invention aims to overcome the technical defects and provide a chest expander.

In order to solve the technical problem, the technical scheme provided by the invention is that the chest expander comprises the following components: the novel tension spring comprises a tension spring part, wherein a first handle and a connecting plate body are arranged at two ends of the tension spring part respectively, a tension sensor is arranged on the connecting plate body, the tension sensor and the tension spring part are symmetrically arranged relative to the connecting plate body, a second handle is arranged at the other end of the tension sensor, a display device is arranged on the second handle, and the display device is electrically connected with the tension sensor.

As an improvement, the tension spring part is composed of a first tension spring, a second tension spring, a third tension spring and a fourth tension spring, and the first tension spring, the second tension spring, the third tension spring and the fourth tension spring have the same length and are arranged in parallel.

As an improvement, a first safety belt is arranged on the first handle.

As an improvement, a second safety belt is arranged on the second handle.

As a modification, the spring portion and the connecting plate body are fixed by welding.

As a modification, the spring portion and the first handle are fixed by welding.

As a modification, the spring portion and the first handle are fixed by welding.

As an improvement, the second handle is made of stainless steel.

As an improvement, a chip and a battery are arranged in the display device.

As an improvement, the first tension spring, the second tension spring, the third tension spring and the fourth tension spring are all made of spring steel.

Compared with the prior art, the invention has the advantages that: the pull rod is convenient to use, a user can conveniently see how much pulling force is used, and the pull rod has high practical value and commercial value and is worth popularizing.

Drawings

Fig. 1 is a schematic view of a first structure of a chest expander according to the present invention.

Fig. 2 is a second structural schematic diagram of a chest expander of the present invention.

Fig. 3 is a schematic diagram of a third structure of the chest expander.

Fig. 4 is a fourth structural diagram of a chest expander of the present invention.

As shown in the figure: 1. the safety belt comprises a first handle, 2, a connecting plate body, 3, a tension sensor, 4, a second handle, 5, a display device, 6, a first tension spring, 7, a second tension spring, 8, a third tension spring, 9, a fourth tension spring, 10, a first safety belt, 11 and a second safety belt.

Detailed Description

The chest expander of the present invention will be further described in detail with reference to the accompanying drawings.

With reference to the accompanying drawings 1-4, the chest expander comprises a tension spring part, a first handle 1 and a connecting plate body 2 are respectively arranged at two ends of the tension spring part, a tension sensor 3 is arranged on the connecting plate body 2, the tension sensor 3 and the tension spring part are symmetrically arranged relative to the connecting plate body 2, a second handle 4 is arranged at the other end of the tension sensor 3, a display device 5 is arranged on the second handle 4, and the display device 5 and the tension sensor 3 are electrically connected.

The tension spring part consists of a first tension spring 6, a second tension spring 7, a third tension spring 8 and a fourth tension spring 9, and the first tension spring 6, the second tension spring 7, the third tension spring 8 and the fourth tension spring 9 are equal in length and are arranged in parallel.

The first handle 1 is provided with a first safety harness 10.

And a second safety belt 11 is arranged on the second handle 4.

The spring portion and the connecting plate body 2 are fixed by welding.

The spring portion and the first handle 1 are fixed by welding.

The spring portion and the first handle 1 are fixed by welding.

The second handle 4 is made of stainless steel.

And a chip and a battery are arranged in the display device 5.

The first tension spring 6, the second tension spring 7, the third tension spring 8 and the fourth tension spring 9 are all made of spring steel.

When the tension-adjustable device is specifically implemented, the tension-adjustable device is convenient to use, a user can conveniently see how much tension is used, the practical value and the commercial value are high, and the tension-adjustable device is worth popularizing.

The present invention and its embodiments have been described above, and the description is not intended to be limiting, and the drawings are only one embodiment of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the spirit and scope of the invention as defined by the appended claims.