Control mechanism for spring type constant force training device

Abstract

The utility model relates to the technical field of fitness equipment, in particular to a control mechanism for a spring type constant-force strength trainer, which comprises a tension trainer, a vertical frame is fixed at the rear end of the tension trainer, and the control mechanism is arranged on the vertical frame and used for providing training strength for the tension trainer. Comprising a frame fixed to the lower end in a vertical frame, a plurality of mounting grooves transversely distributed at equal intervals in the frame, tension springs installed at the lower ends in the mounting grooves, lower hanging rings hooked by the lower ends of the tension springs and fixed to the bottoms of the mounting grooves, upper hanging rings hooked by the upper ends of the tension springs, and locking rings fixed to the upper ends of the upper hanging rings. The screw rod is driven to rotate by rotating the knob, and the screw rod drives the lock rod to move through cooperation of the sliding block and the support, so that the lock rod can be inserted into the lock ring for fixation and disengaged for fixation release. And the use number of the tension springs can be determined by inserting different numbers of locking rings, so that tension adjustment is realized.

Description

Technical Field

[0001] This utility model relates to the field of fitness equipment technology, specifically a control mechanism for a spring-type constant force strength training device. Background Technology

[0002] Strength training machines are common equipment in gyms, fitness centers, and wellness centers, serving as effective tools for strength training and body shaping. Currently, most strength training machines use plate-type weights, which are adjusted during training via pins and selector axes. The characteristic of this type of weight is constant resistance; the weight remains the same whether exerting force or releasing it. However, since the resistance is determined by the weight of the iron weight, the greater the weight, the higher the cost and the bulkier the equipment.

[0003] According to CN221998773U, a control mechanism for a spring-type constant force strength trainer is disclosed. This technology discloses "a control mechanism for a spring-type constant force strength trainer, used to control the spring-type constant force strength trainer; including: a support frame, a control motor, a power shaft, an adjusting cam, a first limit plate, a second limit plate, and an elastic pin," etc. It has the technical effect that "by setting the adjusting cam and the elastic pin, when the power shaft of the control motor or the manual rotation control mechanism rotates at different angles, the elastic pin at different positions can fix the bottom of the corresponding spring, thereby generating different resistances, realizing mechanical control of the positioning of the bottom of the spring, with a simple structure and high efficiency."

[0004] While the above solution allows for manual operation by replacing the motor with an adjustment handwheel, the design of this adjustment mechanism is relatively complex. Compared to the intuitive and easy-to-use traditional manual latch adjustment method, especially in environments like gyms where there are many first-time users, this mechanism may be difficult for users to quickly understand and operate. Furthermore, although the manual latch, as a separate component, has its convenience, it also faces the risk of being lost or damaged. Loss or damage to the manual latch can not only affect the normal operation of the equipment but may also lead to potential safety issues. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a control mechanism for a spring-type constant force strength trainer. This mechanism features a control knob that rotates a lead screw, which, through a slider and a bracket, moves a locking rod. This allows the locking rod to be inserted into a locking ring for fixing and to disengage from the locking mechanism. The number of tension springs used can be determined by inserting different numbers of locking rings, thus achieving tension adjustment.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a control mechanism for a spring-type constant force strength trainer, comprising a tension trainer, a support frame fixed to the rear end of the tension trainer, and a control mechanism mounted on the support frame for providing training intensity to the tension trainer. The control mechanism includes:

[0007] The main components include a frame fixed inside the lower end of the upright, several horizontally equidistant mounting slots inside the frame, a tension spring installed inside the lower end of the mounting slot, a lower hanging ring hooked by the lower end of the tension spring and fixed to the bottom of the mounting slot, an upper hanging ring hooked by the upper end of the tension spring, and a locking ring fixed to the upper end of the upper hanging ring.

[0008] The adjustment assembly includes a longitudinally slidingly mounted axle bracket at the front end of the frame, with locking rods extending laterally through both ends of the axle bracket.

[0009] Preferably, the adjustment assembly further includes a lead screw rotatably mounted between the two ends of the shaft frame, a slider threaded onto both ends of the lead screw's outer wall, a bracket fixed on the slider, with the other end of the bracket fixed to a locking rod, and a knob fixed to one end of the lead screw.

[0010] Preferably, the main component further includes a limiting plate fixed between the upper hanging ring and the locking ring, and a stop bar fixed in the middle of the inner wall of the mounting groove.

[0011] Preferably, the main component further includes an annular groove formed at the upper end of the inner wall of the mounting groove, and the locking rod is located in the annular groove.

[0012] Preferably, the control mechanism further includes a rope disposed on the tension trainer, with the ends of the rope fixed to the top two ends of the shaft frame, and a circular hole opened in the middle of the upper end of the frame, through which the rope passes through the frame.

[0013] Preferably, the lower hanging ring is threadedly installed at the lower end of the frame. Beneficial effects

[0014] This invention provides a control mechanism for a spring-loaded constant force strength training device. Compared with the prior art, it has the following advantages:

[0015] (1) By rotating the knob, the lead screw is driven to rotate. The lead screw moves the locking rod through the slider and bracket, so that the locking rod can be inserted into the locking ring for fixing and disengagement. The number of tension springs used can be determined by inserting different numbers of locking rings, thereby realizing tension adjustment.

[0016] (2) The locking rods on both sides can move in opposite directions synchronously, so that the locking rods on both sides can be inserted from both sides to the middle. In addition, the number of springs fixed by the locking rods on both sides is the same, ensuring the balance of forces.

[0017] (3) When the tension spring retracts and resets, the upper hanging ring drives the locking ring to move downwards, and drives the bottom of the limiting plate to fit with the top of the stop bar; so that the height and angle of the locking ring on each tension spring are consistent after reset, which facilitates the insertion or disengagement of the subsequent locking rod. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a schematic diagram of the front view of the control mechanism in this utility model;

[0020] Figure 3 This is a schematic diagram of the structure on the back of the control mechanism in this utility model;

[0021] Figure 4 This utility model Figure 3 A schematic diagram of the structure of part A in the middle;

[0022] Figure 5 This is a schematic diagram of the adjustment component in this utility model;

[0023] Figure 6 This is a schematic diagram of the frame structure in this utility model.

[0024] In the diagram: 1. Tension trainer; 2. Stand; 3. Control mechanism; 31. Main component; 311. Frame; 312. Mounting slot; 313. Tension spring; 314. Lower hanging ring; 315. Upper hanging ring; 316. Locking ring; 317. Limiting plate; 318. Stop bar; 319. Ring groove; 32. Adjustment component; 321. Shaft bracket; 322. Locking rod; 323. Lead screw; 324. Slider; 325. Bracket; 326. Knob; 33. Rope; 34. Round hole. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1 - Figure 6 This utility model provides a technical solution: a control mechanism for a spring-type constant force strength training device, including a tension training device 1, a stand 2 fixed to the rear end of the tension training device 1, and a control mechanism 3 provided on the stand 2 for providing training intensity to the tension training device 1. The control mechanism 3 includes:

[0027] The main component 31 includes a frame 311 fixed inside the lower end of the upright 2, a number of horizontally equidistant mounting slots 312 opened inside the frame 311, a tension spring 313 installed inside the lower end of the mounting slot 312, a lower hanging ring 314 hooked by the lower end of the tension spring 313 and fixed to the bottom of the mounting slot 312, an upper hanging ring 315 hooked by the upper end of the tension spring 313, and a locking ring 316 fixed to the upper end of the upper hanging ring 315.

[0028] The adjustment assembly 32 includes a shaft bracket 321 that is longitudinally slidably mounted on the front end of the frame 311, and locking rods 322 that are laterally slidably mounted through both ends of the shaft bracket 321.

[0029] In this embodiment, when the rope 33 is under tension, the rope 33 drives the locking rod 322 through the shaft bracket 321. The locking rod 322, through the locking ring 316 and the hanging ring 315, pulls the tension spring 313, thereby realizing tension training. The locking rods 322 on both sides can move in opposite directions synchronously, so that the locking rods 322 on both sides can be inserted from both sides to the middle. Furthermore, the number of tension springs fixed by the locking rods 322 on both sides is the same, ensuring force balance.

[0030] Specifically, the adjustment assembly 32 also includes a lead screw 323 rotatably mounted between the two ends of the shaft bracket 321, a slider 324 threadedly mounted on both ends of the outer wall of the lead screw 323, a bracket 325 fixed on the slider 324, and the other end of the bracket 325 fixed to the locking rod 322, and a knob 326 fixed to one end of the lead screw 323.

[0031] In this embodiment, the screw 323 is rotated by rotating the knob 326. The screw 323 moves the locking rod 322 through the slider 324 and the bracket 325, so that the locking rod 322 can be inserted into the locking ring 316 for fixing and can be released from fixing.

[0032] Specifically, the main component 31 also includes a limiting plate 317 fixed between the upper hanging ring 315 and the locking ring 316, and a stop bar 318 fixed in the middle of the inner wall of the mounting groove 312.

[0033] In this embodiment, when the tension spring 313 retracts and resets, the upper hanging ring 315 drives the locking ring 316 to move downward, and causes the bottom of the limiting plate 317 to fit against the top of the stop bar 318; so that the height and angle of the locking ring 316 on each tension spring 313 are consistent after reset, which facilitates the subsequent insertion or disengagement of the locking rod 322.

[0034] Specifically, the main component 31 also includes an annular groove 319 formed on the upper end of the inner wall of the mounting groove 312, and the locking rod 322 is located in the annular groove 319.

[0035] In this embodiment, the annular groove 319 can be used to avoid motion interference to the up and down movement of the locking rod 322 and the rope 33.

[0036] Specifically, the control mechanism 3 also includes a rope 33 installed on the tension trainer 1, with the ends of the rope 33 fixed to the top two ends of the shaft frame 321, and a round hole 34 opened in the middle of the upper end of the frame 311, through which the rope 33 passes through the round hole 34 and through the frame 311.

[0037] In this embodiment, when using the tension trainer 1, the tension spring 313 in the main body component 31 is pulled by the rope 33, so that the user can feel the tension; and the tension can be adjusted by using tension springs 313 of different initial lengths and numbers.

[0038] Specifically, the lower hanging ring 314 is threaded onto the lower end of the frame 311.

[0039] In this embodiment, the lower hanging ring 314 can be detached from the frame 311, thereby facilitating the disassembly and replacement of the tension spring 313.

[0040] The working principle and usage process of this utility model are as follows: First, the screw 323 is rotated by rotating the knob 326. The screw 323 moves the locking rod 322 through the slider 324 and the bracket 325, so that the locking rod 322 can be inserted into the locking ring 316 for fixation. Different numbers of locking rings 316 can be inserted according to training needs.

[0041] Then, during the use of the tension training device 1, when the rope 33 is subjected to tension, the rope 33 drives the locking rod 322 through the shaft frame 321. The locking rod 322, through the locking ring 316 and the hanging ring 315, pulls the tension spring 313, thereby realizing tension training. The locking rods 322 on both sides can move in opposite directions synchronously, so that the locking rods 322 on both sides can be inserted from both sides to the middle. In addition, the number of tension springs 313 fixed by the locking rods 322 on both sides is the same, ensuring the balance of forces.

[0042] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A control mechanism for a spring-type constant force strength training device, comprising a tension training device (1), wherein a stand (2) is fixed to the rear end of the tension training device (1), characterized in that: The stand (2) is equipped with a control mechanism (3) for providing training intensity to the tension trainer (1). The control mechanism (3) includes: The main component (31) includes a frame (311) fixed inside the lower end of the upright (2), several horizontally equidistant mounting slots (312) opened inside the frame (311), a tension spring (313) installed inside the lower end of the mounting slot (312), a lower hanging ring (314) hooked by the lower end of the tension spring (313) and fixed to the bottom of the mounting slot (312), an upper hanging ring (315) hooked by the upper end of the tension spring (313), and a locking ring (316) fixed to the upper end of the upper hanging ring (315). The adjustment assembly (32) includes a shaft bracket (321) that is longitudinally slidably mounted on the front end of the frame (311), with locking rods (322) that are laterally slidably mounted through both ends of the shaft bracket (321).

2. The control mechanism for a spring-type constant force strength training device according to claim 1, characterized in that: The adjustment assembly (32) further includes a lead screw (323) rotatably mounted between the two ends of the shaft frame (321), a slider (324) threadedly mounted on both ends of the outer wall of the lead screw (323), a bracket (325) fixed on the slider (324), and the other end of the bracket (325) fixed to the locking rod (322), and a knob (326) fixed on one end of the lead screw (323).

3. The control mechanism for a spring-type constant force strength training device according to claim 1, characterized in that: The main component (31) also includes a limiting plate (317) fixed between the upper hanging ring (315) and the locking ring (316), and a stop bar (318) fixed in the middle of the inner wall of the mounting groove (312).

4. The control mechanism for a spring-type constant force strength training device according to claim 1, characterized in that: The main component (31) also includes an annular groove (319) formed on the upper end of the inner wall of the mounting groove (312), and the locking rod (322) is located in the annular groove (319).

5. The control mechanism for a spring-type constant force strength training device according to claim 1, characterized in that: The control mechanism (3) also includes a rope (33) set on the tension trainer (1), and the ends of the rope (33) are fixed to the top two ends of the shaft frame (321). A round hole (34) is opened in the middle of the upper end of the frame (311), and the rope (33) passes through the round hole (34) through the frame (311).

6. The control mechanism for a spring-type constant force strength training device according to claim 1, characterized in that: The lower hanging ring (314) is threaded onto the lower end of the frame (311).

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