Adjustable arm strength device

Abstract

The utility model relates to the technical field of fitness equipment, in particular to an adjustable arm strength device which is characterized by comprising an arm strength spring, an arm strength rod and fixing sleeves, the two ends of the arm strength spring are fixedly connected with the ends of the arm strength rod through the fixing sleeves respectively, a long groove is formed in the outer side face of the arm strength rod, and the long groove is parallel to the axis of the arm strength rod. The arm strength rod is sleeved with a lock sleeve and a handle, a screw rod is arranged at the inner end of the handle, a screw hole matched with the screw rod is formed in the outer end of the arm strength rod, the handle and the arm strength rod are rotationally and movably matched, the screw rod extends into the arm strength rod, a lock hole is formed in the inner end of the handle, and a lock block matched with the lock hole in an inserted mode is arranged on the end face of the lock sleeve. The inner ring face of the lock sleeve is provided with a protruding strip matched with the long groove in a sliding mode. According to the utility model, the beneficial effects of force arm exercise, adjustable force, reliable structure, simple and efficient assembly and the like are achieved in a manner of adjusting the handle and locking the lock catch.

Description

Technical Field

[0001] This utility model relates to the technical field of fitness equipment, specifically to an adjustable arm strength trainer. Background Technology

[0002] Arm strength trainers are very common in gyms as fitness equipment, and there is a Chinese patent that discloses an adjustable arm strength trainer (application number: CN201610432935.6). Its structure includes an arm strength spring and an arm strength tube. An end cap is fixed to the outer opening of the arm strength tube, and the end cap has a central hole. An expansion groove is provided on the inner opening of the arm strength tube. An arm strength adjustment mechanism is provided inside the arm strength tube. This mechanism includes an adjustment knob, a screw, an inner spring positioning block, an inner spring, and a conical expansion joint. The screw is set inside the arm strength tube, and the inner end of the screw is connected to the conical expansion joint. The conical expansion joint cooperates with the inner opening of the arm strength tube. The outer end of the screw passes through the central hole of the end cap and is threadedly connected to the adjustment knob. The inner spring positioning block is fixed inside the arm strength tube, and the inner spring is set between the inner spring positioning block and the conical expansion joint.

[0003] Therefore, it is evident that the above structure is very inconvenient to assemble due to the presence of the inner spring, and may even require the use of other tools to assemble the inner spring.

[0004] When arm exercisers are used for fitness, the force of the arm exerciser needs to be adjusted according to the different strength requirements of the user. Therefore, an adjustable arm exerciser needs to be selected. At the same time, the ease of assembly and service life also need to be considered, which requires a new technical solution. Utility Model Content

[0005] In order to solve the technical problems and shortcomings of the prior art, the present invention provides an adjustable arm exerciser that can adjust the position of the handle to change the force of the exercise, while taking into account the long service life and assembly efficiency, so as to facilitate production and use.

[0006] To achieve the above and other related objectives, the present invention adopts the following technical solution:

[0007] An adjustable arm strength trainer includes an arm strength spring, an arm strength rod, and a fixing sleeve. Both ends of the arm strength spring are fixedly connected to the ends of the arm strength rod via the fixing sleeve. The outer side of the arm strength rod is provided with a long groove, which is parallel to the axis of the arm strength rod. A locking sleeve and a handle are fitted onto the arm strength rod. The inner end of the handle is provided with a screw, and the outer end of the arm strength rod is provided with a screw hole adapted to the screw. The handle and the arm strength rod are rotatably engaged, and the screw extends into the arm strength rod. The inner end of the handle is provided with a locking hole, and the end face of the locking sleeve is provided with a locking block adapted to the locking hole. The inner ring surface of the locking sleeve is provided with a protrusion adapted to the sliding of the long groove.

[0008] Preferably, the outer end of the arm lever is provided with a base plate, and the screw hole is located in the center of the base plate. The base plate and the arm lever are integrally formed or fixedly assembled.

[0009] Preferably, the length of the screw is less than the length of the handle, which is less than the length of the lever.

[0010] Preferably, the handle has multiple lock holes evenly distributed in its circumference, the number and position of the lock blocks are adapted to the lock holes, and each lock block is provided with a guide slope.

[0011] Preferably, the handle is also fitted with an anti-slip sleeve.

[0012] Preferably, when the bottom of the inner cavity of the handle abuts against the end of the arm lever, the moving distance of the lock sleeve on the handle is greater than or equal to the length of the lock block.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This utility model features a long groove on the arm lever, allowing the locking sleeve fitted on it to move back and forth but not rotate circumferentially. A screw thread on the handle engages with a screw hole on the arm lever, allowing the handle to be adjusted forward and backward while the arm lever rotates circumferentially. After adjustment, the arm lever, handle, and locking sleeve are secured by engaging the locking sleeve into the locking hole on the handle. To adjust the handle position, the locking sleeve can be slid out, and the handle rotated to change its position. This method is simple to operate, easy and flexible to assemble, structurally stable, and durable.

[0015] 2. In this utility model, for ease of processing, the arm lever can be integrally formed with the base plate or assembled as two separate parts.

[0016] 3. To improve service life and reliability, the structural strength requirements mainly lie in the length design of the screw, handle, and arm lever. Through their assembly, when the bottom of the handle's inner cavity abuts against the end of the arm lever, the movement distance of the locking sleeve on the handle is greater than or equal to the length of the locking block. This ensures reliable use, a long service life, and that components such as the screw are less prone to breakage.

[0017] Other additional advantages and benefits of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0019] Figure 1This is an overall schematic diagram of an embodiment of this application;

[0020] Figure 2 This is a side view of an embodiment of this application;

[0021] Figure 3 yes Figure 2 Sectional view at AA;

[0022] Figure 4 It is an exploded view of the structure from one perspective;

[0023] Figure 5 This is an exploded view of the structure from another perspective.

[0024] Explanation of reference numerals for major components:

[0025] 1. Arm spring; 2. Arm lever; 21. Long groove; 22. Screw hole; 23. Base plate; 3. Fixing sleeve; 4. Locking sleeve; 41. Locking block; 42. Guide slope; 43. Raised strip; 5. Handle; 51. Screw; 52. Locking hole; 53. Anti-slip sleeve. Detailed Implementation

[0026] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings. The following specific examples illustrate the embodiments of the present invention, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, unless otherwise specified, the following embodiments and features in the embodiments can be combined with each other.

[0027] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. The illustrations only show the components related to the present invention and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be changed at will, and the layout of the components may also be more complex.

[0028] It should be noted that in the description of this application, the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicating directional or positional relationships, are based on the directional or positional relationships shown in the accompanying drawings. These are merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the invention. Furthermore, it should be noted that in the description of this application, unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two elements. Those skilled in the art can understand the specific meaning of the above terms in the invention based on the specific circumstances.

[0029] Example:

[0030] This invention discloses an adjustable arm strength trainer, as per embodiments. Figure 1 , Figure 2 and Figure 3 As shown, the assembly includes a spring 1, a lever 2, and a fixing sleeve 3. Both ends of the spring 1 are fixedly connected to the ends of the lever 2 via the fixing sleeves 3. The hollow lever 2 has a long groove 21 on its outer surface, which is parallel to the axis of the lever 2. A locking sleeve 4 and a handle 5 are fitted onto the lever 2. The inner end of the handle 5 has a screw 51. (See assembly structure reference.) Figure 3 It is understood that the outer end of the lever 2 is provided with a screw hole 22 that matches the screw 51. The handle 5 and the lever 2 are rotatably engaged, and the screw 51 extends into the lever 2. The inner end of the handle 5 is provided with a locking hole 52. The end face of the locking sleeve 4 is provided with a locking block 41 that is compatible with the locking hole 52. The inner ring surface of the locking sleeve 4 is provided with a protrusion 43 that is compatible with the sliding groove 21.

[0031] As can be seen, by setting a long groove 21 on the arm lever 2, the locking sleeve 4 fitted on it can move back and forth, but cannot rotate circumferentially.

[0032] The handle 5 is screwed into the screw hole 22 on the arm lever 2 via a screw 51, allowing the handle 5 to be adjusted forward and backward while the arm lever 2 rotates circumferentially. After the forward and backward distance of the handle 5 is adjusted, the arm lever 2, handle 5, and locking sleeve 4 are fixed by engaging the locking hole 52 on the handle 5. If the position of the handle 5 needs to be adjusted, the locking sleeve 4 can be slid out, and the handle 5 can be rotated to change its position. This operation method is simple, easy and flexible to assemble, has a stable structure, and can be used for a long time.

[0033] Furthermore, regarding production, to facilitate the molding of the arm lever 2, a base plate 23 is provided at the outer end of the arm lever 2, with a screw hole 22 located at the center of the base plate 23; Option 1: The base plate 23 and the arm lever 2 are integrally molded. Option 2: The base plate 23 and the arm lever 2 are two separate parts, fixedly assembled.

[0034] exist Figure 3 As can be seen, the length L1 of screw 51 < the length L2 of handle 5 < the length L3 of lever 2. Therefore, during the adjustment of handle 5, sufficient length of lever 2 remains inside handle 5.

[0035] Combination Figure 4 and Figure 5 It is understood that multiple lock holes 52 are evenly distributed around the handle 5, and the number and position of the lock blocks 41 are adapted to the lock holes 52. Each lock block 41 is provided with a guide ramp 42. This makes it easier for the lock block 41 to be inserted into the lock hole 52, and the guide ramp 42 guides the lock with its slope and is fastened to the handle 5 by an interference fit.

[0036] To enhance user comfort, a non-slip sleeve 53 is fitted onto the handle 5. The non-slip sleeve 53 can be made of flexible materials such as silicone or rubber, providing both slip resistance and improved grip comfort.

[0037] Combination Figure 3 and Figure 5 It is understood that when the bottom of the inner cavity of the handle 5 abuts against the end of the lever 2, the movement distance b of the locking sleeve 4 on the handle 5 is greater than or equal to the length a of the locking block 41. This allows the handle 5 to be locked or unlocked by the locking sleeve 4 even when it is in the initial position.

[0038] To improve service life and reliability, this solution focuses on the length design of the screw 51, handle 5, and lever 2 to enhance structural strength. Furthermore, through proper assembly, when the bottom of the handle 5's inner cavity abuts against the end of the lever 2, the movement distance of the locking sleeve 4 on the handle 5 is greater than or equal to the length of the locking block 41. This ensures reliable operation, a long service life, and prevents components such as the screw 51 from easily breaking.

[0039] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. For those skilled in the art, the present invention can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An adjustable arm strength trainer, comprising an arm strength spring (1), an arm strength rod (2), and a fixing sleeve (3), wherein both ends of the arm strength spring (1) are fixedly connected to the ends of the arm strength rod (2) via the fixing sleeve (3), characterized in that, The outer side of the arm lever (2) is provided with a long groove (21), the long groove (21) is parallel to the axis of the arm lever (2), a locking sleeve (4) and a handle (5) are sleeved on the arm lever (2), the inner end of the handle (5) is provided with a screw (51), the outer end of the arm lever (2) is provided with a screw hole (22) adapted to the screw (51), the handle (5) and the arm lever (2) are rotatably engaged and the screw (51) extends into the arm lever (2), the inner end of the handle (5) is provided with a locking hole (52), the end face of the locking sleeve (4) is provided with a locking block (41) adapted to the locking hole (52), and the inner ring surface of the locking sleeve (4) is provided with a protrusion (43) adapted to the sliding of the long groove (21).

2. The adjustable arm strength trainer according to claim 1, characterized in that, The outer end of the arm lever (2) is provided with a base plate (23), and a screw hole (22) is provided at the center of the base plate (23). The base plate (23) and the arm lever (2) are integrally formed or fixedly assembled.

3. The adjustable arm strength trainer according to claim 1, characterized in that, The length of the screw (51) is less than the length of the handle (5) and the length of the lever (2).

4. The adjustable arm strength trainer according to claim 1, characterized in that, The handle (5) has a plurality of lock holes (52) evenly distributed in the circumferential direction. The number and position of the lock blocks (41) are adapted to the lock holes (52), and each lock block (41) is provided with a guide slope (42).

5. The adjustable arm strength trainer according to claim 1, characterized in that, The handle (5) is also fitted with an anti-slip sleeve (53).

6. The adjustable arm strength trainer according to claim 1, characterized in that, When the bottom of the inner cavity of the handle (5) abuts against the end of the arm lever (2), the movement distance of the locking sleeve (4) on the handle (5) is greater than or equal to the length of the locking block (41).

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