CN107376210A - A kind of chest expanding apparatus - Google Patents

Abstract

The invention discloses a chest expansion device, which belongs to the field of fitness equipment, and comprises a bracket, a back support part, an arm-spreading load-bearing part and a holding device, the back support part is installed on the bracket; the arm-spreading load-bearing part is There are two, and they are installed on both sides of the back support part. The load-bearing part of the spread arm can be clamped against resistance in a horizontal state; there are two holding devices, and they are respectively fixed on the two load-bearing arms The end of the part; each of the boom load-bearing parts includes an upper arm support part and a lower arm support part, and the upper arm support part and the lower arm support part can be clamped against resistance, and the holding device is fixed on the lower arm end of the support. The invention has the advantages of more balanced shaping effect, less out-of-shape movement, and prevention of joint damage.

Description

A chest expanding device

technical field

The invention relates to a body-building apparatus, in particular to a chest expanding apparatus.

Background technique

In the prior art, there are multiple forms of fitness equipment used for chest expansion exercise. The more common one is the butterfly arm fitness equipment. This type of equipment generally has a pair of butterfly arms, and the butterfly arms are connected to the counterweight by wire ropes, pulleys and other structures. Form the resistance to the forward rotation of the butterfly arm. When in use, the user's lower arm bends upward to withstand the stressed part of the butterfly arm, and the upper arm and shoulder are kept at a level, and the force of the pectoral muscle drives the butterfly arm to rotate, thereby completing the chest expansion action.

However, in the actual use of the above-mentioned butterfly arm type fitness equipment, since the muscle groups exerting force are only the pectoralis and the front part of the deltoid, it is impossible to exercise the muscles of other positions at the same time. However, most fitness enthusiasts want to obtain a well-proportioned and well-proportioned body, so the above-mentioned butterfly arm type fitness equipment has a single shaping effect in actual use. Aiming at the shortcoming that the shaping effect of the butterfly chest expander is too single, there are still some drawstring chest expander fitness equipment in the prior art, such as the gantry frame, which generally includes two drawstrings with handles on one end, and the other end of the drawstring Connected by pulleys and counterweights. When exercising, the user's arms are spread out horizontally, and after holding the handle with both hands, the arms are folded forward while the arms are bent inwards. This type of drawstring chest expansion device can mobilize multiple muscle groups of the upper body to participate in the exercise, not only the chest muscles and deltoid muscles, but also the biceps, triceps and lower arm muscles. Therefore, the shaping effect of this type of drawstring chest enlarger is more uniform and comprehensive than that of the butterfly arm chest enlarger.

However, there are still many problems in actual use of the above-mentioned pull cord type chest expander. Since the resistance generation point of the drawstring type chest expander is the handle of the hand, and the movement direction of the drawstring is full of freedom, there is no guiding measure, and the user only has the backrest as support at the same time. In this way, in the process of bending the arms inward and closing them, on the one hand, because the drawstring is a full-degree-of-freedom movement without any guiding measures, when the user's strength is insufficient or the counterweight is too high, the movement is very likely to be out of shape. It will affect the fitness effect, and in severe cases, it will cause the arm to be injured. This situation is especially prone to occur among beginners; Lacking the necessary support, relying solely on the strength of joints and muscles to complete the entire weight-bearing action, it is very easy to induce fitness enthusiasts to put too much weight on the elbow and wrist joints, while in fitness, relying on joint force instead of relying on The way of muscle exertion is the culprit of joint damage, especially in the case of high loads, fitness enthusiasts are often eager to complete fitness exercises and choose the wrong way of exerting force. Therefore, the above-mentioned drawstring type chest expander has the disadvantages of easy damage to joints and deformation of the action in actual use.

Contents of the invention

Therefore, the technical problem to be solved by the present invention is to overcome the defects of the chest expansion apparatus in the prior art that the shaping effect is too single, the action is easy to lose shape, and the joint is easy to be damaged, so as to provide a more coordinated shaping effect, easy to maintain the action, A chest expansion device with better joint protection effect.

For this reason, the technical scheme provided by the invention is as follows:

A chest expansion device, comprising:

bracket;

a back support part, the back support part is installed on the bracket;

The load-bearing part of the spread arm, there are two load-bearing parts of the spread arm, which are installed on both sides of the back support part, and the load-bearing parts of the spread arm can be clamped against resistance in a horizontal state;

There are two holding devices, which are respectively fixed at the ends of the load-bearing parts of the two spreading arms;

Each of the boom load-bearing parts includes an upper arm support part and a lower arm support part, the upper arm support part and the lower arm support part can be clamped against resistance, and the holding device is fixed at the end of the lower arm support part .

As a preferred technical solution, both the upper arm support part and the lower arm support part include strip-shaped support plates arranged horizontally.

As a preferred technical solution, the upper arm supporting part and/or the lower arm supporting part further include a strip-shaped splint arranged parallel to the strip-shaped supporting plate, and a shape is formed between the strip-shaped splint and the strip-shaped supporting plate to accommodate the human body. compartment of the arm.

As a preferred technical solution, the two upper arm support parts are respectively hinged on both sides of the back support part, and can be clamped around the hinge axis in a resistance-resistant manner.

As a preferred technical solution, both sides of the back support part are provided with first curved arms, and the upper arm support part is provided with second curved arms, and the first curved arms and the second curved arms are separated from each other. The positions of the back support and upper arm support are hinged.

As a preferred technical solution, the two lower arm support parts are respectively hinged to the outer ends of the two upper arm support parts, and can be clamped around the hinge axis in a resistance-resistant manner.

As a preferred technical solution, the outer end of the upper arm support part is provided with a third curved arm, the inner end of the lower arm support part is provided with a fourth curved arm, and the third curved arm and the fourth curved arm Articulate away from the upper and lower arm supports.

As a preferred technical solution, a counterweight structure is also included, and the counterweight structure is suitable for providing resistance to the clamping action of the upper arm support part and the lower arm support part.

As a preferred technical solution, the counterweight structure includes a cable whose end is fixedly connected to the upper arm support part or the lower arm support part, and the cable is bent around several rollers and then connected to the counterweight.

As a preferred technical solution, the installation place of the upper arm support part and the back support part is provided with a first limiting part suitable for limiting the maximum opening angle of the upper arm support part, and the lower arm support part and the upper arm The installation place of the supporting part is provided with a second limiting part suitable for limiting the maximum opening angle of the lower arm supporting part.

The technical solution of the present invention has the following advantages:

1. In the chest expansion apparatus provided by the present invention, it includes a bracket, a back support part, an arm load-bearing part and a holding device, the back support part is installed on the bracket; there are two arm load-bearing parts, and Installed on both sides of the back support part, the load-bearing part of the spread arm can be clamped against resistance in a horizontal state; there are two holding devices, which are respectively fixed at the ends of the load-bearing parts of the two spread arms; Each of the boom load-bearing parts includes an upper arm support part and a lower arm support part, the upper arm support part and the lower arm support part can be clamped against resistance, and the holding device is fixed at the end of the lower arm support part . After the load-bearing part of the spread arm is arranged in the form of the upper arm support part and the lower arm support part, the upper arm support part and the lower arm support part can be clamped against resistance respectively. When in use, the fitness personnel open their arms and hold the holding device in their hands. The biceps exert force to drive the lower arm to bend forward with a load. After the lower arm is bent to a certain extent, the pectoral muscle exerts force to drive the upper arm forward to perform a load-bearing bend. . During the whole chest clamping action, the upper arm support part will provide force support for the upper arm, and the lower arm support part will provide force support for the lower arm, so as to avoid excessive distribution of the force of the weight-bearing action to the wrist joint, elbow joint and shoulder joint, thereby avoiding joint damage; at the same time, because only clampable actions can be performed between the upper arm support part and the lower arm support part, and between the upper arm support part and the back support part during the bending process, the entire chest clamping action can only be performed in a two-section stretch. It is carried out under the guidance of the weight-bearing part of the arm, thus effectively avoiding the out-of-shape movement caused by insufficient strength and excessive load; finally, because the lower arm muscle group, upper arm muscle group, pectoral muscle and deltoid muscle group All can participate in the chest clamping action, thus effectively ensuring the shaping effect of the weight-bearing chest clamping, making the shaping effect more balanced and the proportion of upper body muscles more coordinated.

2. In the technical solution provided by the present invention, both the upper arm support part and the lower arm support part include strip-shaped support plates arranged horizontally. By designing the upper arm support part and the lower arm support part as strip-shaped support plates, the form of the entire outstretched arm load-bearing part can be closer to the shape of the arm, and can provide more comprehensive support for the arm during the bending process of the arm under load.

3. In the technical solution provided by the present invention, the upper arm support part and/or the lower arm support part further includes a strip-shaped splint arranged parallel to the strip-shaped support plate, and a strip-shaped splint is formed between the strip-shaped support plate and the strip-shaped support plate. The compartment that houses the human arm. When in use, the compartment can be used to better fix the entire arm. When performing the chest clamping action, not only the strip-shaped support plate can form a stressed support for the upper arm and the lower arm, but the strip-shaped splint can also support the chest clamping action of the arm. Provide more focus points, so that the arms receive more constraints during the weight-bearing exercise, so as to further prevent the movement of the arms from being out of shape, and make the equipment more friendly to beginners with insufficient strength.

4. In the technical solution provided by the present invention, the two upper arm support parts are respectively hinged on both sides of the back support part, and can be clamped around the hinge axis to resist resistance. The two lower arm support parts are respectively hinged to the outer ends of the two upper arm support parts, and can be clamped around the hinge axis in a resistance-resistant manner. By designing the installation form between the upper arm support part and the back support part, and between the upper arm support part and the lower arm support part in a hinged form, the freedom of movement of the upper arm support part and the lower arm support part is further limited to the same In the plane perpendicular to the corresponding hinge axis, the restraint of the device on the movement of the arm is further strengthened, further preventing the user from losing shape during the chest clamping movement.

5. In the technical solution provided by the present invention, first curved arms are arranged on both sides of the back support part, and second curved arms are arranged on the upper arm support part, and the first curved arm and the second curved arm Hinge away from the back support and upper arm support. The outer end of the upper arm support part is provided with a third curved arm, and the inner end of the lower arm support part is provided with a fourth curved arm, and the third curved arm and the fourth curved arm are far away from the upper arm support part and the lower arm. The position of the support is hinged. Since the crank arms are hinged at a position away from the support part, when the support part rotates, it will rotate around the hinge axis far away from the support part. This design can effectively prevent the support part from pinching the skin during the rotation process and improve the equipment. Safety while in use.

6. In the technical solution provided by the present invention, the installation of the upper arm support part and the back support part is provided with a first limit part suitable for limiting the maximum opening angle of the upper arm support part, and the lower arm support part A second limiting part suitable for limiting the maximum opening angle of the lower arm supporting part is provided at the installation place with the upper arm supporting part. Through the function of the first limiter and the second limiter, the opening range of the entire load-bearing part of the spread arm can be limited, and the entire load-bearing part of the spreader can be adjusted by adjusting the first limiter and the second limiter. The opening range is adapted to the expansion range of the operator's arms. Avoid excessive opening of the upper arm support part and the lower arm support part under the traction of the counterweight structure, thereby avoiding adverse consequences such as straining tendons and spraining joints.

Description of drawings

In order to more clearly illustrate the specific implementation of the present invention or the technical solutions in the prior art, the following will briefly introduce the accompanying drawings that need to be used in the specific implementation or description of the prior art. Obviously, the accompanying drawings in the following description The drawings show some implementations of the present invention, and those skilled in the art can obtain other drawings based on these drawings without any creative work.

Fig. 1 is the perspective view of the chest expansion device provided in the first embodiment of the present invention;

Fig. 2 is a top view of the chest expanding apparatus shown in Fig. 1;

Fig. 3 is a perspective view of the weight-bearing part of the expanding arm in the chest expanding apparatus provided in the first embodiment of the present invention;

Explanation of reference signs:

1-Bracket, 2-Back support part, 3-Holding device, 4-Extended arm load-bearing part, 41-Upper arm support part, 42-Lower arm support part, 401-Strip support plate, 402-Strip splint, 403-compartment, 51-first crank arm, 52-second crank arm, 53-third crank arm, 54-fourth crank arm, 61-cable, 62-counterweight, 71-first limiter , 72-the second limiting part.

detailed description

The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, or in a specific orientation. construction and operation, therefore, should not be construed as limiting the invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and should not be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model in specific situations.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as there is no conflict with each other.

Example 1:

As shown in Fig. 1 to Fig. 3, it is embodiment 1 of the present invention, and present embodiment provides a kind of chest expanding apparatus, comprises bracket 1, back support part 2, spread arm load-bearing part 4 and holding device 3, so The back support part 2 is installed on the bracket 1; the spread arm load-bearing part 4 is two, and is installed on both sides of the back support part 2, and the spread arm load-bearing part 4 can carry out resistance resistance in a horizontal state. ground clamping; said gripping device 3 is two, and is respectively fixed at the end of two spreader arm load-bearing parts 4; Said each spreader arm load-bearing part 4 all comprises upper arm support part 41 and lower arm support part 42, so The upper arm support part 41 and the lower arm support part 42 can be clamped against resistance, and the gripping device 3 is fixed at the end of the lower arm support part 42 .

After the spread arm load-bearing part 4 is arranged in the form of the upper arm support part 41 and the lower arm support part 42, the upper arm support part 41 and the lower arm support part 42 can be clamped against resistance respectively. When in use, the bodybuilder opens his arms and holds the holding device 3 in his hand. The biceps brachii exerts force to drive the lower arm to bend forward with a load. After the lower arm is bent to a certain extent, the pectoral muscle exerts force to drive the upper arm to carry forward the load. bending. During the whole chest clamping action, the upper arm support part 41 will provide force support for the upper arm, and the lower arm support part 42 will provide force support for the lower arm, so as to avoid excessive distribution of the force of the weight-bearing action to the wrist joint, elbow joint and shoulder joint. Joint, thereby avoiding joint damage; Simultaneously because can only carry out the action that can clamp between upper arm support part 41 and lower arm support part 42, between upper arm support part 41 and back support part 2 in the bending process, the whole clip The chest movement is carried out under the guidance of the two-section arm extension weight-bearing part 4, which effectively avoids the deformation of the movement caused by insufficient strength and excessive load; finally, because the whole chest clamping movement, the muscles of the lower arm and the upper arm Muscle groups, pectoral muscles and deltoid muscle groups can all participate in the chest clamping action, thus effectively ensuring the shaping effect of the weight-bearing chest clamping, making the shaping effect more balanced and the proportion of upper body muscles more coordinated.

As a specific implementation of the chest expansion device, the back support part 2 is specifically a back-to-board vertically installed on the bracket 1, and the width of the back-to-board is smaller than the width of the back of the human body, so as to ensure that the expansion of the arms is not affected. . The holding device 3 is specifically a cylindrical handle installed at the end of the lower arm support part 42 . The clamping against resistance is specifically interpreted as that the upper arm support part 41 can rotate at a certain angle around the mounting point between it and the back support part 2, or the lower arm support part 42 can rotate around it and the upper arm support part 41. The installation point of the upper arm support part 41 or the lower arm support part 42 is subjected to resistance from the outside during the rotation process, and the resistance can be provided by the counterweight structure. The supply may also be provided by other means such as hydraulic means, biasing means, etc.

In order to provide resistance to the clamping action between the above-mentioned upper arm support part 41 and the lower arm support part 42, this embodiment also includes a counterweight structure, which is suitable for the upper arm support part 41 and the lower arm support part 42. Clipping action provides resistance. The counterweight structure includes a cable 61 fixedly connected to the upper arm support part 41 or the lower arm support part 42 at one end, and the cable 61 is connected to the counterweight 62 after bending around several rollers. When the upper arm support part 41 or the lower arm support part 42 performs the clamping action, it will pull the cable 61, and the cable 61 will convert the traction direction into a vertical direction after passing through the action of several rollers, and then pull the counterweight 62 to form the load-bearing part of the extended arm. 4 movements provide resistance.

As a specific embodiment of the upper arm support part 41 and the lower arm support part 42 , the upper arm support part 41 and the lower arm support part 42 both include a strip-shaped support plate 401 arranged horizontally. By designing the upper arm support part 41 and the lower arm support part 42 as a strip-shaped support plate 401, the form of the entire spread arm load-bearing part 4 can be closer to the shape of the arm, and the arm can be provided with a more comprehensive support during the bending process of the arm load. support.

As a modified implementation of the upper arm support part 41 and the lower arm support part 42, the upper arm support part 41 and the lower arm support part 42 also include a strip splint 402 arranged parallel to the strip support plate 401, the Between the strip-shaped splint 402 and the strip-shaped supporting plate 401 is formed a compartment 403 for accommodating human arms. When in use, the compartment 403 can be used to better fix the entire arm. When the chest clamping action is performed, not only the strip-shaped support plate 401 can form a force support for the upper arm and the lower arm, but the strip-shaped splint 402 can also provide support for the arm. The chest clip action provides more focus points, allowing the arms to receive more constraints during the weight-bearing exercise, thereby further preventing the arm movements from being out of shape, and making the equipment more friendly to beginners with insufficient strength.

As a specific embodiment of the installation form of the upper arm support part 41, the lower arm support part 42 and the back support part 2, the two upper arm support parts 41 are respectively hinged on both sides of the back support part 2, and can be hinged The shafts are clamped against resistance. The two lower arm support parts 42 are hinged to the outer ends of the two upper arm support parts 41 respectively, and can be clamped around the hinge axis in a resistance-resistant manner. By designing the installation form between the upper arm support part 41 and the back support part 2 and between the upper arm support part 41 and the lower arm support part 42 into a hinged form, the movements of the upper arm support part 41 and the lower arm support part 42 are free The degree is further limited in the plane perpendicular to the corresponding hinge axis, which further strengthens the restraint of the device on the movement of the arm, and further prevents the user from losing shape during the chest clamping action.

As a specific implementation of the above-mentioned hinged installation form, first curved arms 51 are arranged on both sides of the back support part 2, and second curved arms 52 are arranged on the upper arm support part 41. The arm 51 and the second curved arm 52 are hinged at a position away from the back support part 2 and the upper arm support part 41 . The outer end of the upper arm support part 41 is provided with a third curved arm 53, and the inner end of the lower arm support part 42 is provided with a fourth curved arm 54, and the third curved arm 53 and the fourth curved arm 54 are separated from each other. The positions of the upper arm support part 41 and the lower arm support part 42 are hinged. Since the crank arms are hinged at a position away from the support part, when the support part rotates, it will rotate around the hinge axis far away from the support part. This design can effectively prevent the support part from pinching the skin during the rotation process and improve the equipment. Safety while in use.

In order to prevent the tendons from being strained due to the excessive opening angle of the load-bearing part 4 of the extended arm, the upper arm support part 41 and the back support part 2 in this embodiment are installed with a device suitable for limiting the maximum opening angle of the upper arm support part 41. The first limiting part 71 of the lower arm supporting part 42 and the upper arm supporting part 41 are provided with a second limiting part 72 suitable for limiting the maximum opening angle of the lower arm supporting part 42. The effect of the first stopper 71 and the second stopper 72 can limit the opening range of the entire spread arm load-bearing part 4, and the entire spread can be made by adjusting the first stopper 71 and the second stopper 72. The opening range of the boom load-bearing part 4 adapts to the expansion range of the operator's arms. Avoid excessive expansion of the upper arm support part 41 and the lower arm support part 42 under the traction of the counterweight structure, thereby avoiding adverse consequences such as straining tendons and spraining joints.

As a specific embodiment of the first limiting portion 71 and the second limiting portion 72, in this embodiment, the first limiting portion 71 and the second limiting portion 72 are in the form of abutting pairs, and each abutting pair Each includes two abutment surfaces respectively arranged on different crank arms. When the crank arm rotates to a certain angle around the hinge axis, the abutment surfaces separately arranged on the two crank arms contact each other to form a limiting effect.

Apparently, the above-mentioned embodiments are only examples for clear description, rather than limiting the implementation. For those of ordinary skill in the art, other changes or changes in different forms can be made on the basis of the above description. It is not necessary and impossible to exhaustively list all the implementation manners here. And the obvious changes or changes derived therefrom are still within the scope of protection of the present invention.

Claims (10)

1. A chest expanding device, comprising: bracket (1); A back support part (2), the back support part (2) is installed on the bracket (1); The load-bearing part (4) of the spread arm, the two load-bearing parts (4) of the spread arm are installed on both sides of the back support part (2), and the load-bearing part (4) of the spread arm can be carried out in a horizontal state Clamp against resistance; Holding device (3), said holding device (3) is two, and is respectively fixed on the end of two spreader arm load-bearing parts (4); It is characterized in that: each of the boom load-bearing parts (4) includes an upper arm support part (41) and a lower arm support part (42), and the upper arm support part (41) and the lower arm support part (42) can carry out resistance Clamping with resistance, the holding device (3) is fixed at the end of the lower arm support part (42). 2. A chest expansion apparatus according to claim 1, characterized in that: the upper arm support part (41) and the lower arm support part (42) both comprise horizontally arranged strip-shaped support plates (401). 3. A chest expansion apparatus according to claim 2, characterized in that: the upper arm support part (41) and/or the lower arm support part (42) also includes A strip-shaped splint (402) is provided, and a compartment (403) for accommodating human arms is formed between the strip-shaped splint (402) and the strip-shaped support plate (401). 4. A chest expanding device according to claim 1, characterized in that: the two upper arm support parts (41) are respectively hinged on the two sides of the back support part (2), and can carry out resistance around the hinge axis. Clamping with resistance. 5. A chest expanding apparatus according to claim 4, characterized in that: first curved arms (51) are arranged on both sides of the back support part (2), and on the upper arm support part (41) A second curved arm (52) is provided, and the first curved arm (51) and the second curved arm (52) are hinged at a position away from the back support part (2) and the upper arm support part (41). 6. A chest expansion apparatus according to claim 1, characterized in that: the two lower arm support parts (42) are respectively hinged to the outer ends of the two upper arm support parts (41), and can be rotated around the hinge axis Clamping against resistance. 7. A kind of chest expansion apparatus according to claim 6, characterized in that: the outer end of the upper arm support part (41) is provided with a third curved arm (53), the lower arm support part (42) The inner end is provided with a fourth curved arm (54), and the third curved arm (53) and the fourth curved arm (54) are hinged at a position away from the upper arm support part (41) and the lower arm support part (42). 8. A chest expansion apparatus according to any one of claims 4 to 7, characterized in that: it also includes a counterweight structure, which is suitable for supporting the upper arm support (41) and the lower arm support The clamping action of (42) provides resistance. 9. A chest expanding apparatus according to claim 8, characterized in that: the counterweight structure includes a cable (61) fixedly connected to the upper arm support part (41) or the lower arm support part (42) at one end, the Said cable (61) is connected with counterweight (62) after bending around some rollers. 10. A chest expansion device according to any one of claims 4 to 7, characterized in that: the installation of the upper arm support part (41) and the back support part (2) is provided with a device suitable for supporting the upper arm The first limiting part (71) for limiting the maximum opening angle of the upper arm supporting part (41), the installation place of the lower arm supporting part (42) and the upper arm supporting part (41) is provided with 42) the second limiting part (72) for limiting the maximum opening angle.