Stretchable hand grip exerciser

Abstract

Provided in the present application is a stretchable hand grip exerciser. The stretchable hand grip exerciser comprises a grip portion and at least two finger sleeves, wherein the grip portion is at least partially elastic and is suitable for being gripped; the grip portion has an upper side and a lower side opposite each other in a first direction; and the finger sleeves are connected to the grip portion and are suitable for being sleeved on fingers, at least one finger sleeve being located on the upper side of the grip portion, and at least one finger sleeve being located on the lower side of the grip portion.

Description

Stretchable grip strength trainer TECHNICAL FIELD

[0001] The present application relates to the field of grip strength devices, and in particular, to a stretchable grip strength trainer. BACKGROUND

[0002] A grip strength trainer is a common piece of exercise equipment, which is mainly used to strengthen the muscles of the hands and arms. Generally, the structure of a grip strength trainer is elastic. When a user grips the grip strength trainer, the elastic structure of the grip strength trainer is compressed and generates elastic force. During the process of the user gripping the grip strength trainer, the user achieves grip strength training by overcoming the elastic force of the elastic structure of the grip strength trainer.

[0003] However, the current grip strength trainers have some problems in practical application. For example, the current grip strength trainers are mainly used for grip strength training, and are difficult to be used for stretch training, wherein the muscle groups trained by grip strength training and stretch training are different, the muscle groups trained by grip strength training are mainly flexor groups, and the muscle groups trained by stretch training are mainly extensor groups; for another example, the current grip strength trainers cannot meet the needs of some users with stiff or inflexible fingers. Specifically, the users with stiff or inflexible fingers are difficult to voluntarily grip the grip strength trainer; the current grip strength trainers lack a structure to assist the users with stiff or inflexible fingers to grip the grip strength trainer.

[0004] SUMMARY

[0005] One advantage of the present application is to provide a stretchable grip strength trainer, wherein the stretchable grip strength trainer can be used for both grip strength training and stretch training.

[0006] Another advantage of the present application is to provide a stretchable grip strength trainer, wherein the stretchable grip strength trainer has a structure to assist gripping, can force the fingers of a user to bend, and thus make the hand of the user in a gripping state.

[0007] Still another advantage of the present application is to provide a stretchable grip strength trainer, wherein the stretchable grip strength trainer achieves the function of stretch training through a relatively simple structure.

[0008] Still another advantage of the present application is to provide a stretchable grip strength trainer, wherein the stretchable grip strength trainer can ensure that the gripping body thereof does not fall off when used for stretch training.

[0009] In order to achieve at least one of the above advantages or other advantages and objectives, according to one aspect of the present application, there is provided a stretchable grip strength trainer, comprising:

[0010] a gripping part, the gripping part being at least partially elastic and adapted to be gripped, the gripping part having an upper side and a lower side opposite to each other in a first direction;

[0011] at least two finger sleeves connected to the holding portion, adapted to be fitted on fingers, wherein at least one of the finger sleeves is located on the upper side of the holding portion, and at least one of the finger sleeves is located on the lower side of the holding portion.

[0012] According to an embodiment of the present application, the holding portion comprises a holding body and a sleeve, wherein the holding body is at least partially elastic, and the sleeve is sleeved on the holding body; the sleeve has a sleeve upper side and a sleeve lower side opposite in the first direction; the finger sleeves are connected to the sleeve, wherein at least one of the finger sleeves is located on the sleeve upper side and is connected to the upper side of the holding portion in such a manner, and at least one of the finger sleeves is located on the sleeve lower side and is connected to the lower side of the holding portion in such a manner.

[0013] According to an embodiment of the present application, the holding portion comprises a holding body, wherein the holding body is at least partially elastic, and the holding body has a holding body upper side and a holding body lower side opposite in the first direction; the finger sleeves are connected to the holding body, wherein at least one of the finger sleeves is located on the holding body upper side and is connected to the upper side of the holding portion in such a manner, and at least one of the finger sleeves is located on the holding body lower side and is connected to the lower side of the holding portion in such a manner.

[0014] According to an embodiment of the present application, the sleeve comprises an annular band, which is wrapped around the outer periphery of the holding body.

[0015] According to an embodiment of the present application, the sleeve further comprises at least one rib, each of which extends between two different positions in the circumferential direction of the annular band.

[0016] According to an embodiment of the present application, at least one of the ribs is a longitudinal rib, and the annular band has an annular band upper side and an annular band lower side opposite in the first direction; one end of the longitudinal rib is connected to the annular band upper side, and the other end of the longitudinal rib is connected to the annular band lower side.

[0017] According to an embodiment of the present application, the annular band has an annular band one side and an annular band two side opposite in a second direction, wherein the second direction is perpendicular to the first direction; at least one of the ribs is a transverse rib, one end of the transverse rib is connected to the annular band one side, and the other end of the transverse rib is connected to the annular band two side.

[0018] According to one embodiment of the present application, the ring-shaped band has a ring-shaped cavity formed therein, a width of the ring-shaped band at a maximum width is greater than or equal to 1 / 16 of a circumference of a virtual circle of the ring-shaped cavity and less than or equal to 15 / 16 of the circumference of the virtual circle of the ring-shaped cavity, wherein a radial dimension of the ring-shaped cavity in the first direction is a circle of a diameter defined as the virtual circle of the ring-shaped cavity.

[0019] According to one embodiment of the present application, the holding body has an embedding groove, and the ring-shaped band is embedded in the embedding groove.

[0020] According to one embodiment of the present application, the holding body is a grip ball.

[0021] According to one embodiment of the present application, the sleeve is replaceably sleeved on the holding part.

[0022] According to one embodiment of the present application, the sleeve has elasticity.

[0023] According to one embodiment of the present application, the sleeve is in interference fit with the holding body.

[0024] According to one embodiment of the present application, the stretchable grip trainer further comprises at least one elastic connecting strip connected between the holding part and the finger sleeve.

[0025] According to one embodiment of the present application, at least two of the finger sleeves are located on an upper side of the holding part; and at least two adjacent finger sleeves located on the upper side of the holding part are connected to each other.

[0026] According to one embodiment of the present application, at least one of the finger sleeves is a thumb-adapted finger sleeve, and the thumb-adapted finger sleeve is located on a lower side of the holding part and deviates from a center of the holding part in a second direction, wherein the second direction is perpendicular to the first direction.

[0027] According to one embodiment of the present application, an inner diameter of the thumb-adapted finger sleeve is greater than an inner diameter of other finger sleeves.

[0028] According to one embodiment of the present application, the holding portion has opposite first and second sides in the second direction; the thumb adapting finger is biased toward the first side of the holding portion in the second direction; at least one of the finger sleeves is a little finger adapting finger sleeve, at least one of the finger sleeves is an index finger adapting finger sleeve, at least one of the finger sleeves is a middle finger adapting finger sleeve, and at least one of the finger sleeves is a ring finger adapting finger sleeve; the little finger adapting finger sleeve, the index finger adapting finger sleeve, the middle finger adapting finger sleeve, and the ring finger adapting finger sleeve are located on the upper side of the holding portion; the little finger adapting finger sleeve is closest to the second side of the holding portion in the second direction compared to the other finger sleeves, and has an inner diameter smaller than that of the other finger sleeves; the index finger adapting finger sleeve is closest to the first side of the holding portion in the second direction compared to the other finger sleeves located on the upper side of the sleeve body, and has an inner diameter greater than or equal to that of the middle finger adapting finger sleeve, and has an inner diameter greater than or equal to that of the ring finger adapting finger sleeve; the middle finger adapting finger sleeve and the ring finger adapting finger sleeve are located between the little finger adapting finger sleeve and the index finger adapting finger sleeve. BRIEF DESCRIPTION OF DRAWINGS

[0029] These and / or other aspects and advantages of the present application will become more apparent and more readily appreciated from the following detailed description of the embodiments of the present application, taken in conjunction with the accompanying drawings in which:

[0030] FIG. 1 illustrates a perspective view diagram of a first embodiment of a stretchable grip strength trainer according to an embodiment of the present application.

[0031] FIG. 2 illustrates another perspective view diagram of the first embodiment of the stretchable grip strength trainer according to an embodiment of the present application.

[0032] FIG. 3 illustrates a state change diagram of the first embodiment of the stretchable grip strength trainer according to an embodiment of the present application.

[0033] FIG. 4 illustrates another state change diagram of the first embodiment of the stretchable grip strength trainer according to an embodiment of the present application.

[0034] FIG. 5 illustrates an exploded view diagram of the first embodiment of the stretchable grip strength trainer according to an embodiment of the present application.

[0035] FIG. 6 illustrates a perspective view diagram of a second embodiment of the stretchable grip strength trainer according to an embodiment of the present application.

[0036] FIG. 7 illustrates a perspective view diagram of a third embodiment of the stretchable grip strength trainer according to an embodiment of the present application.

[0037] FIG. 8 illustrates a perspective view diagram of a fourth embodiment of the stretchable grip strength trainer according to an embodiment of the present application.

[0038] FIG. 9 illustrates an exploded view schematic diagram of a fifth embodiment of the stretchable handgrip exerciser according to embodiments of the present application.

[0039] FIG. 10 illustrates a perspective view schematic diagram of a sixth embodiment of the stretchable handgrip exerciser according to embodiments of the present application.

[0040] FIG. 11 illustrates a perspective view schematic diagram of a seventh embodiment of the stretchable handgrip exerciser according to embodiments of the present application.

[0041] FIG. 12 illustrates a perspective view schematic diagram of an eighth embodiment of the stretchable handgrip exerciser according to embodiments of the present application. DETAILED DESCRIPTION

[0042] The terms and words used in the following description and claims are not limited to the bibliographical meanings, but, are merely used to enable a clear and consistent in understanding of the application. Therefore, it should be apparent to those skilled in the art that the following description of various embodiments of the present application is provided for illustration purpose only and not for the purpose of limiting the application as defined by the appended claims and their equivalents.

[0043] It is understood that the term "a" or "one" means "at least one" or "one or more" when used in this application. Thus, the description using terms such as "a" or "one" are used herein to include both the singular form as well as the plural form of the word it modifies.

[0044] Although ordinal numbers such as "first", "second", or the like will be used in describing various components, the components are not limited by the ordinal numbers. The ordinal numbers are used merely for distinguishing one component from another. For example, a first component could be termed a second component and, similarly, a second component could be termed a first component without departing from the teaching of the present application. The term "and / or" includes any and all combinations of one or more of the associated listed items.

[0045] The terms used in the present application are merely used to describe various embodiments and are not intended to limit the application. As used herein, the singular form is intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "has," when used in this specification, specify the presence of stated features, numbers, steps, operations, components, elements, or combinations thereof, but do not preclude the presence or addition of one or more other features, numbers, steps, operations, components, elements, or combinations thereof.

[0046] Referring to Figs. 1-12 of the drawings accompanying the present application, a stretchable handgrip exerciser 1 according to an embodiment of the present application is illustrated in the following description. In the present embodiment, the stretchable handgrip exerciser 1 can be used for both handgrip exercise and stretching exercise. Specifically, as shown in Figs. 1 and 2, the stretchable handgrip exerciser 1 comprises a grip 10 and at least two finger sleeves 20. As shown in Fig. 3, the grip 10 is adapted to be held, and the grip 10 is at least partially elastic so that when the grip 10 is held by a user, a tendency to return to an initial natural state is generated, and in turn, an elastic force is generated, thereby enabling the user to perform handgrip exercise in a process of resisting the elastic force of the grip 10. The grip 10 has an upper side 101 and a lower side 102 opposite in a first direction D1. The finger sleeves 20 are adapted to be sleeved on fingers. The finger sleeves 20 are connected to the grip 10. At least one of the finger sleeves 20 is located on the upper side 101 of the grip 10, and at least one of the finger sleeves 20 is located on the lower side 102 of the grip 10. In this way, when at least one finger of a user stretches into the finger sleeve 20 located on the upper side 101 of the grip 10 and stretches upward, and at least one finger of the user stretches into the finger sleeve 20 located on the lower side 102 of the grip 10 and stretches downward, the grip 10 and / or the connection structure between the grip 10 and the finger sleeves 20 and / or the finger sleeves 20 are stretched, and a tendency to return to an initial state is generated, and in turn, an elastic force is generated, thereby enabling the user to perform stretching exercise in a process of resisting the elastic force generated by the grip 10 and / or the connection structure between the grip 10 and the finger sleeves 20 and / or the finger sleeves 20, as shown in Fig. 4. For example, when the index finger and / or the middle finger and / or the ring finger stretch into the finger sleeve 20 located on the upper side 101 of the grip 10 and stretch upward, and the thumb stretches into the finger sleeve 20 located on the lower side 102 of the grip 10 and stretches downward, the grip 10 and / or the connection structure between the grip 10 and the finger sleeves 20 and / or the finger sleeves 20 are stretched and an elastic force is generated, thereby enabling the user to perform stretching exercise in a process of resisting the elastic force generated by the grip 10 and / or the connection structure between the grip 10 and the finger sleeves 20 and / or the finger sleeves 20.

[0047] The present application can achieve the stretching exercise function by providing the finger sleeves 20 on the upper side 101 and the lower side 102 of the grip 10, and the implementation scheme is simple and easy to implement.

[0048] It is worth mentioning that the present application connects the finger sleeves 20 to the grip 10, so that the grip 10 can also provide part of the elastic force when the user performs stretching exercise, and participate in the stretching exercise of the user.

[0049] For the convenience of introducing and describing the stretchable grip strength trainer 1, in the present application, when the stretchable grip strength trainer 1 is held, the side for placing the thumb is the lower side 102 of the stretchable grip strength trainer 1, and the side for placing the index finger is the upper side 101 of the stretchable grip strength trainer 1. The upper side 101 of each component of the stretchable grip strength trainer 1 is consistent with the upper side 101 of the stretchable grip strength trainer 1, and the lower side 102 of each component of the stretchable grip strength trainer 1 is consistent with the lower side 102 of the stretchable grip strength trainer 1. Accordingly, the lower side 102 of the holding part 10 is consistent with the lower side 102 of the stretchable grip strength trainer 1, and the upper side 101 of the holding part 10 is consistent with the upper side 101 of the stretchable grip strength trainer 1.

[0050] Preferably, the overall size of the holding part 10 is suitable for being held in one hand, on the one hand, for the convenience of holding and carrying, and on the other hand, considering that if the holding part 10 is too large, the degree of hand opening when the user holds the holding part 10 is already large, which is not conducive to further stretching training, and the appropriate holding part 10 volume is conducive to stretching training. In the present application, the size of the holding part 10 in the first direction D1 is 30mm-100mm, for example, 40mm-70mm, and further, for example, 30mm, 35mm, 45mm, 50mm, 55mm, 60mm, 65mm, 70mm, 75mm, 80mm, 85mm, 90mm, 95mm, 100mm.

[0051] In the embodiment of the present application, optionally, the finger sleeve 20 has elasticity, so that the finger sleeve 20 can provide partial elasticity when the user performs stretching exercise, and can also adapt to different sizes of fingers.

[0052] In the embodiment of the present application, optionally, the finger sleeve 20 has a through hole 201, allowing the user's fingers to pass through the finger sleeve 20.

[0053] It is worth mentioning that the finger sleeve 20 can to some extent play a structure of auxiliary holding. Specifically, since at least one of the finger sleeves 20 is located on the upper side 101 of the holding part 10, and at least one of the finger sleeves 20 is located on the lower side 102 of the holding part 10, when the user stretches the thumb into the finger sleeve 20 located on the lower side 102 of the holding part 10, and stretches the index finger and / or middle finger and / or ring finger into the finger sleeve 20 located on the upper side 101 of the holding part 10, the finger sleeve 20 forces the fingers to bend inward, i.e., to the side where the palm is located, thereby making the user's hand in a grasping state.

[0054] As to the specific way of connecting the finger sleeve 20 to the holding part 10, in some embodiments of the present application, the holding part 10 comprises a holding body 11 and a sleeve body 12, the sleeve body 12 is sleeved on the holding body 11, and the finger sleeve 20 is connected to the sleeve body 12, in this way, the finger sleeve 20 is connected to the holding part 10; in other embodiments of the present application, as shown in Fig. 11, the holding part 10 only comprises a holding body 11, without the sleeve body 12, and the finger sleeve 20 is directly connected to the holding body 11. In the present application, the holding body 11 refers to the part that provides the main elastic force or the maximum elastic force for the user during the process of the user doing the grip exercise. Accordingly, the holding body 11 is at least partially elastic, so that when the holding part 10 is held by the user, an elastic force is generated, thereby enabling the user to exercise the grip in the process of resisting the elastic force of the holding part 10.

[0055] In the following, the embodiments of the holding part 10 provided with the sleeve body 12 and the embodiments of the holding part 10 without the sleeve body 12 are described respectively.

[0056] In the embodiments of the holding part 10 provided with the sleeve body 12 of the present application, the holding body 11 has a holding body upper side 1101 and a holding body lower side 1102 opposite in the first direction D1, and a holding body side 1103 and a holding body side 1104 opposite in the second direction D2, wherein the second direction D2 is perpendicular to the first direction D1. The sleeve body 12 has a sleeve body upper side 1201 and a sleeve body lower side 1202 opposite in the first direction D1, and a sleeve body side 1203 and a sleeve body side 1204 opposite in the second direction D2. When the sleeve body 12 is sleeved on the holding body 11, the sleeve body lower side 1202 corresponds to and is adjacent to the holding body lower side 1102, the sleeve body upper side 1201 corresponds to and is adjacent to the holding body upper side 1101, the holding body side 1103 corresponds to and is adjacent to the sleeve body side 1203, and the holding body side 1104 corresponds to and is adjacent to the sleeve body side 1204.

[0057] The specific embodiments of the main material and shape of the holding body 11 are not limited in the present application. In an example of the present application, the holding body 11 is implemented as a grip ball, which is foamed by foaming material, such as polytetramethylene ether glycol (PTE) material, polyvinyl chloride (PVC) material, polyurethane (PU) material, polyethylene glycol (EVA) material, thermoplastic elastomer (TPE) material, silicone material, and the shape is spherical. It should be understood that in other examples of the application, the holding body 11 can be implemented in other ways, for example, as a spring, as shown in Fig. 6; for another example, as a grip ring, as shown in Fig. 7.

[0058] Optionally, the entire inner surface of the sleeve 12 is attached to the holding body 11, as shown in FIG. 1 and FIG. 2, or only a partial inner surface of the sleeve 12 is attached to the holding body 11, as shown in FIG. 6.

[0059] The upper side 1201 of the sleeve 12 forms the upper side 101 of the holding part 10, and the lower side 1202 of the sleeve 12 forms the lower side 102 of the holding part 10. The finger sleeve 20 is connected to the sleeve 12, and at least one of the finger sleeves 20 is located on the upper side 1201 of the sleeve 12, and is connected to the upper side 101 of the holding part 10 in this way, and at least one of the finger sleeves 20 is located on the lower side 1202 of the sleeve 12, and is connected to the lower side 102 of the holding part 10 in this way.

[0060] When the user performs grip training, the user can insert fingers into the finger sleeve 20, and at the same time, grip the holding body 11, so that the holding body 11 generates elastic force, and the user's grip strength is exercised. When the user performs stretching training, the user can insert fingers into the finger sleeve 20, and at the same time, stretch the fingers, so that the holding part 10 and / or the connection structure between the holding part 10 and the finger sleeve 20 and / or the finger sleeve 20 is stretched, and the user performs stretching exercise.

[0061] The sleeve 12 is replaceably sleeved on the holding part 10, so that the sleeve 12 can be sleeved on different holding bodies 11, or different sleeves 12 can be replaced for the holding body 11.

[0062] In some examples of the present application, the sleeve 12 has elasticity. On the one hand, thanks to the elasticity of the sleeve 12, the replacement of the sleeve 12 is facilitated, and on the other hand, due to the elasticity of the sleeve 12 and the connection of the finger sleeve 20 to the sleeve 12, the sleeve 12 can provide a certain elastic force when the user performs grip training or stretching training.

[0063] It is worth mentioning that, in the embodiments of the present application, the sleeve 12 is in interference fit with the holding body 11. Accordingly, when the sleeve 12 is in a natural state, the volume of the sleeve 12 is less than the volume of the holding body 11, and when the sleeve 12 is sleeved on the holding body 11, the sleeve 12 is in a stretched state. On the one hand, the combination stability between the sleeve 12 and the holding body 11 is high, and the sleeve 12 and the holding body 11 are not easy to separate from each other, and on the other hand, since the sleeve 12 is already in a stretched state when the sleeve 12 is sleeved on the holding body 11, a certain elastic potential energy is stored, therefore, compared with the sleeve 12 in a natural state when the sleeve 12 is sleeved on the holding body 11, the user needs greater force to drive the sleeve 12 to be stretched relative to the holding body 11, which can greatly exercise the extensor muscle group of the user.

[0064] It is also worth mentioning that, the combination stability of the sleeve 12 relative to the holding body 11 and the elastic force provided by the sleeve 12 can be controlled by controlling the coverage of the sleeve 12 on the holding body 11. When the coverage of the sleeve 12 on the holding body 11 is high, the combination stability of the sleeve 12 relative to the holding body 11 is high, the sleeve 12 and the holding body 11 are not easy to separate from each other after the sleeve 12 is stretched by the finger sleeve 20, and the elastic force provided by the sleeve 12 is large; when the coverage of the sleeve 12 on the holding body 11 is low, the combination stability of the sleeve 12 relative to the holding body 11 is low, the sleeve 12 and the holding body 11 are easy to separate from each other after the sleeve 12 is stretched by the finger sleeve 20, and the elastic force provided by the sleeve 12 is small.

[0065] Accordingly, in the present application, the form and size of the sleeve 12 are specially designed, so that the combination stability of the sleeve 12 relative to the holding body 11 is high, the sleeve 12 and the holding body 11 are not easy to separate from each other after the sleeve 12 is stretched by the finger sleeve 20, and the sleeve 12 provides appropriate elastic force. In some examples of the present application, the sleeve 12 does not completely cover the entire outer surface of the holding body 11, on the one hand, which can save materials to some extent, and on the other hand, which can control the elastic force of the sleeve 12 to some extent.

[0066] In the embodiment of the present application, the sleeve 12 comprises a ring-shaped band 121, which is wrapped around the outer periphery of the holding body 11. The ring-shaped band 121 has a ring-shaped cavity 12101 formed thereon, and correspondingly, the holding body 11 is at least partially received in the ring-shaped cavity 12101. The ring-shaped band 121 has a ring-shaped band upper side 1211 and a ring-shaped band lower side 1212 opposite to each other in the first direction D1, a ring-shaped band first side 1213 and a ring-shaped band second side 1214 opposite to each other in the second direction D2, a ring-shaped band third side 1215 and a ring-shaped band fourth side 1216 opposite to each other in a third direction D3, wherein the third direction D3 is perpendicular to the first direction D1, and the third direction D3 is perpendicular to the second direction D2. The ring-shaped band 121 has a first opening 12102 and a second opening 12103 opposite to each other in the third direction D3, wherein the first opening 12102 is formed on the ring-shaped band third side 1215, and the second opening 12103 is formed on the ring-shaped band fourth side 1216.

[0067] In one example of the present application, in order to avoid the sleeve 12 from being separated from the holding body 11 after the sleeve 12 is stretched by the finger sleeve 20, for example, the holding body 11 is pulled out of the first opening 12102 or the second opening 12103 of the ring-shaped band 121 and falls off, in this example, at least one rib 122 is provided, and each rib 122 extends between two different positions in the circumferential direction of the ring-shaped band 121. More specifically, in this example, at least one rib 122 is a longitudinal rib 1221, one end of the longitudinal rib 1221 is connected to the ring-shaped band upper side 1211, and the other end of the longitudinal rib 1221 is connected to the ring-shaped band lower side 1212.

[0068] The number and specific arrangement of the longitudinal ribs 1221 are not limited in the present application. In this example, four longitudinal ribs 1221 are provided, i.e., the sleeve 12 comprises four longitudinal ribs 1221. Specifically, two longitudinal ribs 1221 are arranged on the three-side annular band 1215, respectively at two different positions in the circumferential direction of the first opening 12102, and the other two longitudinal ribs 1221 are arranged on the four-side annular band 1216, respectively at two different positions in the circumferential direction of the second opening 12103. One of the two longitudinal ribs 1221 arranged on the three-side annular band 1215 is offset from the center of the annular band 121 in the second direction D2 toward the one-side annular band 1213, and the other longitudinal rib 1221 is offset from the center of the annular band 121 in the second direction D2 toward the two-side annular band 1214. One of the two longitudinal ribs 1221 arranged on the four-side annular band 1216 is offset from the center of the annular band 121 in the second direction D2 toward the one-side annular band 1213, and the other longitudinal rib 1221 is offset from the center of the annular band 121 in the second direction D2 toward the two-side annular band 1214. The two longitudinal ribs 1221 arranged on the three-side annular band 1215 are axisymmetric with respect to the center of the annular band 121 in the second direction D2, and the two longitudinal ribs 1221 arranged on the four-side annular band 1216 are axisymmetric with respect to the center of the annular band 121 in the second direction D2. It should be understood that the number and specific arrangement of the longitudinal ribs 1221 can also be implemented in other ways.

[0069] In another example of the present application, in order to avoid the sleeve 12 from being separated from the holding body 11 after the sleeve 12 is stretched by the finger sleeve 20, at least one rib 122 is provided, and at least one of the ribs 122 is a transverse rib 1222, as shown in FIG. 8. One end of the transverse rib 1222 is connected to the one-side annular band 1213, and the other end of the transverse rib 1222 is connected to the two-side annular band 1214.

[0070] The number and specific arrangement of the transverse ribs 1222 are not limited in the present application. In this example, two ribs 122 are transverse ribs 1222, i.e., the sleeve 12 includes two transverse ribs 1222. Specifically, one transverse rib 1222 is arranged on the third side 1215 of the annular band, and the other transverse rib 1222 is arranged on the fourth side 1216 of the annular band. One end of the transverse rib 1222 arranged on the third side 1215 of the annular band is connected to the first side 1213 of the annular band, and the other end is connected to the second side 1214 of the annular band. One end of the transverse rib 1222 arranged on the fourth side 1216 of the annular band is connected to the first side 1213 of the annular band, and the other end is connected to the second side 1214 of the annular band.

[0071] In another example of the present application, in order to avoid the sleeve 12 from being separated from the holding body 11 after the sleeve 12 is stretched by the finger sleeve 20, the width of the annular band 121 is increased, as shown in FIG. 9, to increase the wrapping degree of the annular band 121 on the holding body 11. Specifically, in this example, the radial dimension of the annular cavity 12101 in the first direction D1 is defined as a virtual circle of the annular cavity 12101, and the width of the annular band 121 refers to the dimension of the annular band 121 in the circumferential direction of the annular cavity 12101; the width of the annular band 121 at the widest point is greater than or equal to 1 / 16 of the circumference of the virtual circle of the annular cavity 12101 and less than or equal to 15 / 16 of the circumference of the virtual circle of the annular cavity 12101, for example, the width of the annular band 121 at the widest point is greater than or equal to 1 / 15 of the circumference of the virtual circle of the annular cavity 12101 and less than or equal to 14 / 15 of the circumference of the virtual circle of the annular cavity 12101.

[0072] In this example, the coverage of the annular band 121 relative to the holding body 11, i.e., the ratio of the surface area of the annular band 121 to the surface area of the holding body 11, is greater than or equal to 1 / 256 of the area of the virtual circle of the annular cavity 12101 and less than or equal to 225 / 256 of the area of the virtual circle of the annular cavity 12101, for example, the width of the annular band 121 at the widest point is greater than or equal to 1 / 225 of the area of the virtual circle of the annular cavity 12101 and less than or equal to 196 / 225 of the area of the virtual circle of the annular cavity 12101.

[0073] In another example of the present application, in order to avoid the sleeve 12 from being separated from the holding body 11 after the sleeve 12 is stretched by the finger sleeve 20, a groove is provided on the holding body 11 to match the annular band 121. Accordingly, in this example, the holding body 11 has an embedded groove 103, as shown in Fig. 10. The annular band 121 is embedded in the embedded groove 103.

[0074] It is worth mentioning that the holding part 10 has a certain elasticity. If the finger sleeve 20 is directly connected to the holding part 10, a greater elastic force needs to be overcome to fully open the palm and straighten the fingers, especially for users with less hand and arm strength. Accordingly, the present application proposes to provide an elastic connecting strip 30 between the holding part 10 and the finger sleeve 20. In other words, the stretchable grip strength trainer 1 further comprises at least one elastic connecting strip 30, which is connected between the holding part 10 and the finger sleeve 20. In this way, the user can fully open the palm when performing stretching exercises by mainly overcoming the elastic force of the elastic connecting strip 30. In the embodiment of the present application in which the holding part 10 is provided with the sleeve 12, the elastic connecting strip 30 is connected between the sleeve 12 and the finger sleeve 20.

[0075] Accordingly, in one example of the present application, at least two elastic connecting strips 30 are provided between at least one finger sleeve 20 and the holding part 10, and the length extension directions of at least two of the elastic connecting strips 30 provided between the same finger sleeve 20 and the holding part 10 are different. More specifically, in this example, at least two elastic connecting strips 30 are provided between at least one finger sleeve 20 and the sleeve 12 of the holding part 10, and the length extension directions of at least two of the elastic connecting strips 30 provided between the same finger sleeve 20 and the sleeve 12 are different.

[0076] It should be understood that the number and extension direction of the elastic connecting strips 30 arranged between the single finger sleeve 20 and the holding part 10 can also be implemented in other ways. For example, the number of the elastic connecting strips 30 arranged between the single finger sleeve 20 and the holding part 10 can also be designed as 1, 3, 4, or more. When the number of the elastic connecting strips 30 arranged between the single finger sleeve 20 and the holding part 10 is greater than or equal to 2, the extension direction of the elastic connecting strips 30 arranged between the single finger sleeve 20 and the holding part 10 can also be designed as consistent. Correspondingly, in the embodiment of the holding part 10 provided with the sleeve body 12 in the present application, the number and extension direction of the elastic connecting strips 30 arranged between the single finger sleeve 20 and the sleeve body 12 can also be implemented in other ways. For example, the number of the elastic connecting strips 30 arranged between the single finger sleeve 20 and the sleeve body 12 can also be designed as 1, 3, 4, or more. When the number of the elastic connecting strips 30 arranged between the single finger sleeve 20 and the sleeve body 12 is greater than or equal to 2, the extension direction of the elastic connecting strips 30 arranged between the single finger sleeve 20 and the sleeve body 12 can also be designed as consistent.

[0077] In the embodiment of the present application, each adjacent finger sleeve 20 located on the upper side 101 of the holding part 10 can be connected to each other, or each adjacent finger sleeve 20 located on the upper side 101 of the holding part 10 can not be connected to each other. Correspondingly, in one example of the present application, at least one elastic band 40 is arranged between each adjacent two finger sleeves 20, as shown in FIG. 12. In another example of the present application, each adjacent two finger sleeves 20 are not connected to each other, as shown in FIG. 1.

[0078] It should be understood that when each adjacent finger sleeve 20 located on the upper side 101 of the holding part 10 is connected to each other, the resistance that needs to be overcome by the user when performing stretching exercise is relatively large. Correspondingly, in the embodiment of the holding part 10 provided with the sleeve body 12 in the present application, each adjacent finger sleeve 20 located on the upper side 1201 of the sleeve body can be connected to each other, or each adjacent finger sleeve 20 located on the upper side 101 of the holding part 10 can not be connected to each other.

[0079] In the embodiment of the present application, the finger sleeve 20 is designed according to the characteristics of human fingers and the positions of each finger when the hand is in a gripping state, so as to meet the ergonomic design requirements.

[0080] In particular, at least one of the finger sleeves 20 is a thumb-adapted finger sleeve 21 adapted to be sleeved on a user's thumb. At least one of the finger sleeves 20 is a little finger-adapted finger sleeve 25. At least one of the finger sleeves 20 is an index finger-adapted finger sleeve 22. At least one of the finger sleeves 20 is a middle finger-adapted finger sleeve 23. At least one of the finger sleeves 20 is a ring finger-adapted finger sleeve 24. The little finger-adapted finger sleeve 25 is adapted to be sleeved on a user's little finger. The index finger-adapted finger sleeve 22 is adapted to be sleeved on an index finger. The middle finger-adapted finger sleeve 23 is adapted to be sleeved on a middle finger. The ring finger-adapted finger sleeve 24 is adapted to be sleeved on a user's ring finger.

[0081] The thumb-adapted finger sleeve 21 is located on the lower side 102 of the holding portion 10 and is offset from the center of the holding portion 10 in the second direction D2 to conform to the state that the thumb is offset from the palm in the palm width direction when the hand is in the gripping state. More specifically, the holding portion 10 has opposite first and second sides 104 and 105 in the second direction D2; the side to which the thumb-adapted finger sleeve 21 is offset in the second direction D2 defines the first side 104 of the holding portion 10. Considering that the radial dimension of the thumb of a hand is usually larger than that of other fingers, the inner diameter of the thumb-adapted finger sleeve 21 is larger than that of the other finger sleeves 20.

[0082] Considering that the little finger, the index finger, the middle finger and the ring finger are above the thumb when the hand is in the gripping state, the little finger adapting finger sleeve 25, the index finger adapting finger sleeve 22, the middle finger adapting finger sleeve 23 and the ring finger adapting finger sleeve 24 are located on the upper side 101 of the holding part 10. Considering that the little finger is away from the thumb in the palm width direction when the hand is in the gripping state, the little finger adapting finger sleeve 25 is closest to the second side 105 of the holding part 10 in the second direction D2 compared with other finger sleeves 20. Considering that the radial dimension of the little finger is usually smaller than that of other fingers, the inner diameter of the little finger adapting finger sleeve 25 is smaller than that of other finger sleeves 20. Considering that the index finger is closest to the thumb in the palm width direction when the hand is in the gripping state, the index finger adapting finger sleeve 22 is closest to the first side 104 of the holding part 10 in the second direction D2 compared with other finger sleeves 20 located on the sleeve upper side 1201. Considering that the radial dimension of the index finger is usually larger than that of the little finger and smaller than that of the thumb, larger than or equal to that of the middle finger, larger than or equal to that of the ring finger, the inner diameter of the index finger adapting finger sleeve 22 is larger than or equal to that of the middle finger adapting finger sleeve 23, and the inner diameter of the index finger adapting finger sleeve 22 is larger than or equal to that of the ring finger adapting finger sleeve 24. The middle finger adapting finger sleeve 23 and the ring finger adapting finger sleeve 24 are located between the little finger adapting finger sleeve 25 and the index finger adapting finger sleeve 22. Considering that the radial dimension of the middle finger of the hand is close to that of the ring finger, the inner diameter of the middle finger adapting finger sleeve 23 is close to or equal to that of the ring finger adapting finger sleeve 24.

[0083] In the embodiment of the holding part 10 provided with the sleeve 12 in the present application, the thumb adapting finger sleeve 21 is located on the sleeve lower side 1202 and deviates from the center of the sleeve 12 in the second direction D2. More specifically, the thumb adapting finger sleeve 21 deviates to the sleeve one side 1203 in the second direction D2. The little finger adapting finger sleeve 25, the index finger adapting finger sleeve 22, the middle finger adapting finger sleeve 23 and the ring finger adapting finger sleeve 24 are located on the sleeve upper side 1201. The little finger adapting finger sleeve 25 is closest to the sleeve two side 1204 in the second direction D2 compared with other finger sleeves 20. The index finger adapting finger sleeve 22 is closest to the sleeve one side 1203 in the second direction D2 compared with other finger sleeves 20 located on the sleeve upper side 1201.

[0084] In the embodiment of the holding part 10 without the sleeve 12, the holding body upper side 1101 forms the upper side 101 of the holding part 10, and the holding body lower side 1102 forms the lower side 102 of the holding part 10. The finger sleeves 20 are connected to the holding body 11, wherein at least one of the finger sleeves 20 is located on the holding body upper side 1101 and connected to the upper side 101 of the holding part 10, and at least one of the finger sleeves 20 is located on the holding body lower side 1102 and connected to the lower side 102 of the holding part 10.

[0085] In the embodiment of the holding part 10 without the sleeve 12, the elastic connecting strips 30 are optionally arranged between the holding body 11 and the finger sleeves 20. In other words, the elastic connecting strips 30 are connected between the holding body 11 and the finger sleeves 20.

[0086] In one example of the present application, at least two elastic connecting strips 30 are arranged between at least one of the finger sleeves 20 and the holding body 11 of the holding part 10, and the length extension directions of the at least two elastic connecting strips 30 arranged between the same finger sleeve 20 and the holding body 11 are different.

[0087] In the embodiment of the holding part 10 without the sleeve 12, the number and the length extension direction of the elastic connecting strips 30 arranged between a single finger sleeve 20 and the holding body 11 can also be implemented in other ways. For example, the number of the elastic connecting strips 30 arranged between a single finger sleeve 20 and the holding body 11 can also be designed as 1, 3, 4, or more; when the number of the elastic connecting strips 30 arranged between a single finger sleeve 20 and the holding body 11 is greater than or equal to 2, the length extension direction of the elastic connecting strips 30 arranged between a single finger sleeve 20 and the holding body 11 can also be designed to be consistent.

[0088] In the embodiment of the holding part 10 without the sleeve 12, each of the adjacent finger sleeves 20 located on the holding body upper side 1101 is connected to each other, or each of the adjacent finger sleeves 20 located on the upper side 101 of the holding part 10 is not connected to each other.

[0089] In the embodiment of the application where the holding portion 10 is not provided with the sleeve 12, the thumb-adapted finger sleeve 21 is located on the lower side 1102 of the holding body and deviates from the center of the holding body 11 in the second direction D2. More specifically, the thumb-adapted finger sleeve 21 deviates to the one side 1103 of the holding body in the second direction D2. The little finger-adapted finger sleeve 25, the index finger-adapted finger sleeve 22, the middle finger-adapted finger sleeve 23, and the ring finger-adapted finger sleeve 24 are located on the upper side 1101 of the holding body. The little finger-adapted finger sleeve 25 is closest to the two sides 1104 of the holding body in the second direction D2 compared with the other finger sleeves 20. The index finger-adapted finger sleeve 22 is closest to the one side 1103 of the holding body in the second direction D2 compared with the other finger sleeves 20 located on the upper side 1101 of the holding body.

[0090] The above describes the basic principles of the application in combination with specific embodiments, but it should be noted that the advantages, advantages, effects, etc. mentioned in the application are only examples and are not limiting, and these advantages, advantages, effects, etc. cannot be considered as the must-have of each embodiment of the application. In addition, the above specific details are only for the purpose of example and for the purpose of understanding, and are not limiting, and the above details do not limit the application to the above specific details for implementation. The functions and structural principles of the application have been shown and described in the embodiments, and the embodiments of the application can be any modification or modification without departing from the principles.

Claims

1. A stretchable hand gripper, characterized by, The stretchable handgrip trainer comprises: a gripping portion, which is at least partially elastic, and is adapted to be gripped; the gripping portion has an upper side and a lower side opposite to each other in a first direction; at least two finger sleeves are connected to the gripping portion and are adapted to be sleeved on fingers, wherein at least one of the finger sleeves is located on the upper side of the gripping portion, and at least one of the finger sleeves is located on the lower side of the gripping portion.

2. The stretchable hand gripper of claim 1, wherein, The gripping portion comprises a gripping body and a sleeve body, wherein the gripping body is at least partially elastic, and the sleeve body is sleeved on the gripping body; the sleeve body has a sleeve body upper side and a sleeve body lower side opposite to each other in the first direction; the finger sleeves are connected to the sleeve body, wherein at least one of the finger sleeves is located on the sleeve body upper side and is connected to the upper side of the gripping portion in such a way, and at least one of the finger sleeves is located on the sleeve body lower side and is connected to the lower side of the gripping portion in such a way.

3. The stretchable hand gripper of claim 1, wherein, The gripping portion comprises a gripping body, which is at least partially elastic, and has a gripping body upper side and a gripping body lower side opposite to each other in the first direction; the finger sleeves are connected to the gripping body, wherein at least one of the finger sleeves is located on the gripping body upper side and is connected to the upper side of the gripping portion in such a way, and at least one of the finger sleeves is located on the gripping body lower side and is connected to the lower side of the gripping portion in such a way.

4. The stretchable hand gripper of claim 1, wherein, The sleeve body comprises an annular band, which is wrapped around the outer periphery of the gripping body.

5. The stretchable hand gripper of claim 4, wherein, The sleeve body further comprises at least one rib, each of which extends between two different positions in the circumferential direction of the annular band.

6. The stretchable hand gripper of claim 5, wherein, At least one of the ribs is a longitudinal rib, the annular band has an annular band upper side and an annular band lower side opposite to each other in the first direction, one end of the longitudinal rib is connected to the annular band upper side, and the other end of the longitudinal rib is connected to the annular band lower side.

7. The stretchable hand gripper of claim 5, wherein, The annular band has an annular band one side and an annular band two side opposite to each other in a second direction, the second direction is perpendicular to the first direction; at least one of the ribs is a transverse rib, one end of the transverse rib is connected to the annular band one side, and the other end of the transverse rib is connected to the annular band two side.

8. The stretchable hand gripper of claim 4, wherein, The annular band has an annular cavity formed therein, the width of the widest part of the annular band is greater than or equal to 1 / 16 of the circumference of a virtual circle of the annular cavity and less than or equal to 15 / 16 of the circumference of the virtual circle of the annular cavity, wherein a circle with a diameter in the first direction is defined as the virtual circle of the annular cavity.

9. The stretchable hand gripper of claim 3, wherein, The gripping body has an embedding groove, and the annular band is embedded in the embedding groove.

10. The stretchable hand gripper of claim 2 or 3, wherein, The gripping body is a handgrip ball.

11. The stretchable hand gripper of claim 2, wherein, The sleeve body is replaceably sleeved on the gripping portion.

12. The stretchable hand gripper of claim 2, wherein, The sleeve body is elastic.

13. The stretchable handgrip trainer according to claim 2, wherein the sleeve body is in interference fit with the gripping body.

14. The stretchable handgrip trainer according to claim 1, further comprising at least one elastic connecting strip, which is connected between the gripping portion and the finger sleeves.

15. The stretchable hand gripper of claim 1, wherein, At least two of the finger sleeves are located on the upper side of the grip portion; at least two adjacent finger sleeves located on the upper side of the grip portion are connected to each other.

16. The stretchable hand gripper of claim 1, wherein, At least one of the finger sleeves is a thumb-adapted finger sleeve, which is located on the lower side of the grip portion and deviates from the center of the grip portion in a second direction, wherein the second direction is perpendicular to the first direction.

17. The stretchable hand gripper of claim 16, wherein, The inner diameter of the thumb-adapted finger sleeve is larger than the inner diameter of the other finger sleeves.

18. The stretchable hand gripper of claim 16, wherein, The grip portion has opposite first and second sides in the second direction; the thumb-adapted finger sleeve deviates toward the first side of the grip portion in the second direction; at least one of the finger sleeves is a little-finger-adapted finger sleeve, at least one of the finger sleeves is an index-finger-adapted finger sleeve, at least one of the finger sleeves is a middle-finger-adapted finger sleeve, and at least one of the finger sleeves is a ring-finger-adapted finger sleeve; the little-finger-adapted finger sleeve, the index-finger-adapted finger sleeve, the middle-finger-adapted finger sleeve, and the ring-finger-adapted finger sleeve are located on the upper side of the grip portion; the little-finger-adapted finger sleeve is closest to the second side of the grip portion in the second direction compared with the other finger sleeves, and has an inner diameter smaller than the inner diameter of the other finger sleeves; the index-finger-adapted finger sleeve is closest to the first side of the grip portion in the second direction compared with the other finger sleeves located on the upper side of the grip portion, and has an inner diameter larger than or equal to the inner diameter of the middle-finger-adapted finger sleeve and larger than or equal to the inner diameter of the ring-finger-adapted finger sleeve; the middle-finger-adapted finger sleeve and the ring-finger-adapted finger sleeve are located between the little-finger-adapted finger sleeve and the index-finger-adapted finger sleeve.

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