Quick weight-reducing bolt for balancing weight and balancing weight comprising quick weight-reducing bolt

Abstract

The utility model discloses a quick weight reduction bolt for a balancing weight and the balancing weight comprising the same, the quick weight reduction bolt comprises a sleeve, a pin rod, a first spring and a locking piece, and one end of the sleeve is provided with an open hole communicated with the inside of the sleeve. The pin rod and the sleeve are coaxially arranged, and the pin rod is arranged in the open hole in a penetrating mode and can conduct axial telescopic movement. The first spring is located in the sleeve and arranged on the pin rod in a sleeving mode, and the two ends of the first spring abut against the pin rod and the sleeve respectively. The locking piece is located outside the sleeve and comprises a locking rod, one end of the locking rod is pivoted to the sleeve, and the other end of the locking rod forms a handheld end; and a locking part capable of extending into the sleeve and abutting against the pin rod is arranged on one side, facing the sleeve, of the locking rod. When the locking part abuts against the pin rod, the first spring is in a compressed state. When the plug pin needs to be used on a balancing weight, only the locking part needs to abut against the pin rod, at the moment, the locking piece is static relative to the sleeve, and therefore a user can operate the plug pin with one hand and easily insert the plug pin into the balancing weight.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of body -building apparatus accessories, especially a quick weight reduction bolt for counter weight block and the counter weight block containing it. BACKGROUND

[0002] In the existing body -building equipment, counter weight block is a kind of common equipment for tension training. Currently, when training is carried out by recycling counter weight block, multiple different levels need to be set to the weight of training. However, how to realize the automatic adjustment of the weight of counter weight block under the premise of uninterrupted training is the key of counter weight block in actual training.

[0003] Currently, there is a scheme for adjusting counter weight block by using counter weight bolt, but the existing counter weight bolt needs to ensure that the bolt is in sufficient locking state when being clamped into counter weight block, so it is necessary to operate by two hands simultaneously, which brings inconvenience to users. UTILITY MODEL CONTENTS

[0004] To overcome the above-mentioned shortcomings, the utility model aims at providing a quick weight reduction bolt for counter weight block, which can ensure that the locking part and the bolt main body are in a relatively stable fixed state, so that during use, no special attention is needed, and only one hand operation is needed to insert the counter weight bolt into the counter weight block, which is convenient to operate.

[0005] To achieve the above purpose, the utility model adopts the technical scheme of a quick weight reduction bolt for counter weight block, comprising

[0006] A sleeve is provided with an opening in communication with the inside thereof at one end;

[0007] A pin rod is coaxially arranged with the sleeve, and the pin rod is arranged in the opening and can axially extend and retract;

[0008] A first spring is located in the sleeve, and the first spring is sleeved on the pin rod, and the two ends of the first spring are respectively abutted on the pin rod and the sleeve;

[0009] A locking part comprises a locking rod, one end of the locking rod is pivoted to the sleeve, and the other end forms a hand holding end; The side of the locking rod facing the sleeve is provided with a locking part that can extend into the sleeve and abut on the pin rod;

[0010] When the locking part abuts on the pin rod, the first spring is in a compressed state, and the locking part is stationary relative to the sleeve.

[0011] The quick weight reduction bolt for counter weight block of the utility model has the following advantages:

[0012] ①When the pin of the present application is needed to be used on the weight block, only the locking part is needed to be abutted on the pin rod, and at this time the locking part is static relative to the sleeve, therefore, the user can operate with one hand, and easily insert it into the weight block.

[0013] ②In the sleeve, the movement direction of the pin rod can be limited by the setting of the opening; in the locking part, one end of the locking rod is pivoted on the sleeve, so as to facilitate the swinging of the locking rod along the sleeve, and further drive the locking part to enter or exit the sleeve, so as to realize the locking or unlocking of the pin rod.

[0014] ③The other end of the locking rod is set as a hand-held end, so that the action of pressing the locking rod is more labor-saving; due to the locking effect of the locking part on the pin rod, the pin rod can be stably inserted into the weight block, so as to ensure the stability of the weight during exercise; when the weight needs to be adjusted, the locking part can be quickly unlocked by swinging the locking rod, and the pin rod can be quickly retracted by using the rebounding force of the first spring, so as to facilitate the removal of the weight block from the weight block.

[0015] Further, when the locking part is abutted on the pin rod, the locking rod is parallel to the pin rod, and the locking part is perpendicular to the pin rod. Since the pin rod is axially telescopic, when the locking part is perpendicular to the pin rod, the pin rod can provide a stop force in the axial direction of the pin rod, thereby inhibiting the axial movement of the pin rod.

[0016] Further, an arc-shaped chamfer is arranged at the end of the locking part away from the locking rod, so as to reduce the surface friction damage of the pin rod caused by the contact between the locking part and the pin rod during movement.

[0017] Further, a second spring is arranged in the sleeve, one end of the second spring is abutted on the sleeve, and the other end is arranged towards the pin rod; when the first spring is in a natural state, the second spring can be abutted on the pin rod. By arranging the second spring, the phenomenon that the pin rod hits the inner wall of the sleeve due to the excessive rebounding force of the first spring when the pin rod is unlocked can be avoided, and the buffering effect is achieved.

[0018] Further, a limiting seat for sleeving the second spring is arranged on the inner wall of the end of the sleeve away from the opening. The second spring is limited.

[0019] Further, a relief hole is arranged on the side wall of the sleeve and communicates with the inside of the sleeve; the locking part can enter the sleeve from the relief hole.

[0020] Further, a first pivot seat is arranged on one side of the relief hole, and a second pivot seat corresponding to the first pivot seat is arranged on the side of the locking rod away from the hand-held end; the first pivot seat and the second pivot seat are pivotally fixed by a shaft.

[0021] Further, when the locking portion abuts against the pin rod, a gap is left between the end of the clearance hole away from the pivot seat and the locking portion. During the swinging of the locking rod, the locking portion will move in the axial direction of the pin rod, and the gap can ensure that the locking portion can smoothly enter the sleeve.

[0022] Further, the pin rod comprises a rod body and an end cover arranged coaxially, the radial dimension of the end cover is greater than that of the rod body, and one end of the end cover forms a first end face for abutting against the first spring, and the other end forms a second end face for abutting against the locking portion.

[0023] The utility model also provides a counterweight block of quick weight loss, it includes a plurality of counterweight piece, and the movable shuttle shaft is set in each counterweight piece, including preceding for the counterweight block's quick weight loss bolt, the fixed hole of the pin rod of quick weight loss bolt is set up on the shuttle shaft, the connecting hole of quick weight loss bolt is set up on the counterweight piece.

[0024] Further, when the first spring is in the compressed state, the pin rod and the handheld end can respectively extend into the connecting holes of two adjacent counterweight pieces. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is the three-dimensional structure schematic view of the quick weight loss bolt for counterweight block of the utility model embodiment one under the locking state;

[0026] Figure 2 It is the side view of the quick weight loss bolt for counterweight block of the utility model embodiment one under the locking state;

[0027] Figure 3 It is Figure 2 the section view of A-A direction;

[0028] Figure 4 It is the section view of the quick weight loss bolt for counterweight block of the utility model embodiment one under the unlocking state;

[0029] Figure 5 It is the section view structure schematic view of the utility model embodiment two when the counterweight bolt is inserted into the counterweight piece;

[0030] Figure 6 It is the section view structure schematic view of the utility model embodiment two when the handheld end is pushed away by the next counterweight piece during the weight loss training.

[0031] In the drawing:

[0032] 1-sleeve; 11-limiting seat; 12-clearance hole;

[0033] 2-pin rod; 21-rod body; 22-end cap;

[0034] 3-first spring;

[0035] 4-locking member; 41-locking rod; 411-handheld end; 42-locking portion; 421-arc-shaped chamfer;

[0036] 5-second spring; 61, counterweight piece; 611, connecting hole; 62, shuttle shaft. DETAILED DESCRIPTION

[0037] The advantages and features of the present application will be more easily understood by those skilled in the art through the detailed description of the preferred embodiments of the present application in conjunction with the accompanying drawings, so as to make the scope of protection of the present application more clear and explicit.

[0038] Example one:

[0039] Referring to the accompanying drawings, Figures 1-3 As shown in the drawings, the present embodiment is a quick weight-reducing bolt for a counterweight block, which comprises a sleeve 1, a pin rod 2, a first spring 3, and a locking member 4. One end of the sleeve 1 is provided with an opening communicating with the inside thereof. The pin rod 2 is coaxially arranged with the sleeve 1, and the pin rod 2 is arranged in the opening and can axially extend and retract. The first spring 3 is located in the sleeve 1, and the first spring 3 is sleeved on the pin rod 2, with both ends abutting against the pin rod 2 and the sleeve 1, respectively. The locking member 4 is located outside the sleeve 1, which comprises a locking rod 41. One end of the locking rod 41 is pivotally connected to the sleeve 1, and the other end forms a handheld end 411. The side of the locking rod 41 facing the sleeve 1 is provided with a locking portion 42 which can extend into the sleeve 1 and abut against the pin rod 2. When the locking portion 42 abuts against the pin rod 2, the first spring 3 is in a compressed state, and at this time, the locking member 4 is stationary relative to the sleeve 1.

[0040] In the initial state, the locking portion 42 does not abut against the pin rod 2, and the first spring 3 is in a natural state, and the length of the pin rod 2 extending out of the sleeve 1 is in the shortest state. When it is necessary to insert the quick weight-reducing bolt for a counterweight block into the counterweight block, the pin rod 2 is pulled out to extend along the opening to a suitable position, at which time the first spring 3 is compressed. Then, the handheld end 411 is pressed to make the locking portion 42 extend into the sleeve 1.

[0041] When the position of the pin rod 2 is locked, first, the pin rod 2 is pressed to one end of the first spring 3, then the hand-held end 411 is turned to the end close to the sleeve 1, if the locking part 42 contacts the end of the pin rod 2 away from the first spring 3 in the process of extending into the sleeve 1, the pin rod 2 can be released, the pin rod 2 can be kept still by overcoming the rebound of the first spring 3 due to the stop of the locking part 42, until the locking part 42 moves to the preset locking position, the locking part 42 can be kept still by the joint action of the first spring 3 and the locking part 42, the length of the locking part 42 extending out of the sleeve 1 is kept unchanged, at this time, the end of the pin rod 2 extending out of the sleeve 1 can be inserted into the counterweight, so that the counterweight is fixed, and because the locking part 42 locks the pin rod 2, the pin rod 2 will not be axially contracted in the process of the user's movement, so the pin rod 2 can be stably located in the counterweight, ensuring the stability of the counterweight.

[0042] If the locking part 42 does not contact the pin rod 2 in the process of extending into the sleeve 1, the locking part 42 is directly moved to the preset locking position, at this time, the pin rod 2 is released, the pin rod 2 can be axially contracted to abut against the locking part 42 under the rebound of the first spring 3, the stability of the position of the pin rod 2 can be ensured due to the stop of the locking part 42 to the pin rod 2, then the end of the pin rod 2 extending out of the sleeve 1 is inserted into the counterweight, so that the counterweight is fixed, and because the locking part 42 locks the pin rod 2, the pin rod 2 will not be axially contracted in the process of the user's movement, so the pin rod 2 can be stably located in the counterweight, ensuring the stability of the counterweight.

[0043] The locking part 42 in the application can extend into the sleeve 1 (thus having a larger contact area in the radial direction of the pin rod 2) and abut against the end of the pin rod 2, because the pin rod 2 is pressed under the action of the first spring 3 at this time, the locking part 4 can be in a relatively stable static state with the sleeve 1. The user does not have to worry about the problem that the locking rod 41 may fall out when using, and can operate with one hand when the user uses the quick weight-reducing bolt for the counterweight, which is more convenient to use.

[0044] It should be noted that when the pin rod 2 is pulled out, the end of the pin rod 2 located in the sleeve 1 should be moved to the right side of the locking position of the locking part 42 (as shown in Figure 3 , so as to ensure that the locking part 42 can smoothly lock the pin rod 2.

[0045] In order to ensure the stable locking of the locking part 42 to the pin rod 2, in some embodiments, as shown in Figure 3As shown, when the locking portion 42 is abutted against the pin rod 2, the locking rod 41 is parallel to the pin rod 2, and the locking portion 42 is perpendicular to the pin rod 2. At this time, the side surface of the locking portion 42 can be completely fitted to the end of the pin rod 2. Since the pin rod 2 is telescopic along the axial direction, when the locking portion 42 is perpendicular to the pin rod 2, the pin rod 2 can be provided with a stop force in the axial direction, thereby inhibiting the axial movement of the pin rod 2.

[0046] Further, since the locking portion 42 moves from the inclined state to the state perpendicular to the pin rod 2 in the process of swinging of the locking rod 41, if the locking portion 42 abuts against the pin rod 2 in the process of movement of the locking portion 42, it is possible to cause friction damage to the pin rod 2. Therefore, in some embodiments, an arc-shaped chamfer 421 is arranged at the end of the locking portion 42 away from the locking rod 41, so as to reduce the surface friction damage of the pin rod 2 caused by the contact of the locking portion 42 to the pin rod 2 in the process of movement.

[0047] When being unlocked, the pin rod 2 is retracted into the sleeve 1 under the action of the first spring 3. In order to avoid the phenomenon that the pin rod 2 hits the inner wall of the sleeve 1 due to the excessive rebound force of the first spring 3, in some embodiments, the second spring 5 is arranged in the sleeve 1 along the axial direction of the sleeve 1, one end of the second spring 5 is abutted against the inner wall of the sleeve 1, and the other end of the second spring 5 faces the pin rod 2. As shown, Figure 4 When the first spring 3 is in the natural state, the second spring 5 can abut against the pin rod 2. When the pin rod 2 is in the locked state, the end of the second spring 5 facing the pin rod 2 is in the suspended state.

[0048] Further, in order to limit the second spring 5, the inner wall of the end of the sleeve 1 away from the opening is provided with a limiting seat 11 for sleeving the second spring 5.

[0049] In some embodiments, as shown, Figures 3-4 The side wall of the sleeve 1 is provided with a clearance hole 12 communicating with the inside of the sleeve 1, and the locking portion 42 can enter into the sleeve 1 from the clearance hole 12. Further, one end of the clearance hole 12 is provided with a first pivot seat, and the end of the locking rod 41 away from the hand-held end is provided with a second pivot seat corresponding to the first pivot seat; the first pivot seat and the second pivot seat are pivotally fixed through a shaft.

[0050] Since the locking portion 42 will move along the axial direction of the pin rod 2 in the process of swinging of the locking rod 41. In order to ensure that the locking portion 42 can smoothly enter into the sleeve 1, the size of the clearance hole 12 should be limited. Specifically, when the locking portion 42 is abutted against the pin rod 2, a gap is left between the end of the clearance hole 12 away from the pivot seat and the locking portion 42. Through the arrangement of the gap, it can be ensured that the clearance hole 12 has sufficient allowance for the locking portion 42 to enter.

[0051] When the pin rod 2 is unlocked, the locking rod 41 needs to be lifted upward to make the locking part 42 leave the sleeve 1, and when the locking part 42 stops against the pin rod 2, the handheld end 411 can extend out of the sleeve 1 to facilitate the upward force applied to the handheld end 411 when unlocking.

[0052] In some embodiments, as shown in Figure 4 The pin rod 2 includes a coaxially arranged rod body 21 and an end cap 22, the radial dimension of the end cap 22 is larger than that of the rod body 21, and one end of the end cap 22 forms a first end face for abutting the first spring 3, and the other end forms a second end face for stopping the locking part 41.

[0053] Embodiment two:

[0054] Referring to the drawings, Figure 5 and 6 The embodiment is a weight block capable of quickly reducing weight, which includes a plurality of weight pieces 61 and movable shuttle shafts 62 arranged in each weight piece 61, and the shuttle shaft 62 is provided with a fixed hole for the pin rod of the quick weight reduction bolt, and the weight piece is provided with a connecting hole 611 for the quick weight reduction bolt to extend into.

[0055] Before training, first insert the weight bolt of embodiment one into the locked state, and insert a plurality of (the specific number is determined according to the different weight levels of the adjustment) weight bolts into the weight pieces 61 at different heights (the pin rod 2 and the handheld end 411 of the weight bolt are respectively located in the connecting holes 611 of the upper and lower weight pieces 61), thereby corresponding to different weight weights. Then, pull the shuttle shaft 62 upward, at this time, the weight piece 61 below the lowermost weight bolt will pull out the handheld end 411 from the weight piece 61 when the weight bolt moves upward with the weight piece 61, and when the weight piece 61 moves upward, the handheld end 411 gradually unfolds to a state of no longer interfering with the weight piece 61 (as shown in Figure 6 ).

[0056] At this time, although the pin rod 2 is no longer pushed by the locking part 4, the pin rod 2 is still temporarily not ejected under the pressure of the shuttle shaft 62 and the weight piece 61; when each weight piece 61 is put down again, the shuttle shaft 62 and the weight piece 61 no longer exert force on the pin rod 2, and at this time the pin rod 2 is ejected and unlocked under the action of the first spring 3.

[0057] When each weight piece 61 is continuously pulled upward, the weight piece 61 below the weight bolt at a higher place continues to exert a downward swinging force on the handheld end 411 of the weight bolt to reach a state as shown in Figure 6The state shown. Thus, the aforementioned counterweight pin is repeatedly removed from the counterweight sheet 61, thereby easily achieving quick adjustment of different counterweights, and the entire counterweight adjustment process is completely free of manual intervention.

[0058] The above embodiments are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made in accordance with the spirit and essence of the present application shall be covered within the protection scope of the present application.

Claims

1. A quick weight reduction bolt for a weight plate, characterized by: The utility model provides a quick weight reducing bolt for counterweight piece, including The sleeve is provided with an opening at one end which communicates with the inside of the sleeve; The pin rod is coaxially arranged with the sleeve, and the pin rod is arranged in the opening and can axially extend and retract; The first spring is arranged in the sleeve, and the first spring is sleeved on the pin rod, and the two ends of the first spring abut against the pin rod and the sleeve respectively; The locking member includes a locking rod, one end of the locking rod is pivotally connected to the sleeve, and the other end of the locking rod forms a hand holding end; the side of the locking rod facing the sleeve is provided with a locking portion which can extend into the sleeve and abut against the pin rod; When the locking portion abuts against the pin rod, the first spring is in a compressed state, and the locking member is stationary relative to the sleeve.

2. The quick weight reduction bolt for a weight block of claim 1, wherein: When the locking portion abuts against the pin rod, the locking rod is parallel to the pin rod, and the locking portion is perpendicular to the pin rod; and the pin rod and the hand holding end can be respectively inserted into two adjacent counterweight pieces.

3. The quick weight reduction bolt for a weight block of claim 1, wherein: The end of the locking portion away from the locking rod is provided with an arc chamfer.

4. The quick weight reduction bolt for a weight block of claim 1, wherein: The utility model also includes a second spring, the second spring is arranged in the sleeve, one end of the second spring abuts against the sleeve, and the other end of the second spring is arranged towards the pin rod; when the first spring is in a natural state, the second spring can abut against the pin rod.

5. The quick weight reduction bolt for a weight block of claim 4, wherein: The inner wall of the end of the sleeve away from the opening is provided with a limiting seat for sleeving the second spring.

6. The quick weight reduction peg for a weight plate of claim 1, wherein: The side wall of the sleeve is provided with a clearance hole which communicates with the inside of the sleeve; the locking portion can enter the sleeve from the clearance hole.

7. The quick weight reduction bolt for a weight block of claim 6, wherein: One end of the clearance hole is provided with a first pivot seat, and the end of the locking rod away from the hand holding end is provided with a second pivot seat which is correspondingly arranged with the first pivot seat; the first pivot seat and the second pivot seat are pivotally fixed through a shaft.

8. The quick weight reduction peg for a weight plate of claim 1, wherein: The pin rod includes a rod body and an end cover which are coaxially arranged, the radial dimension of the end cover is greater than the radial dimension of the rod body, and one side of the end cover forms a first end face for abutting the first spring, and the other side of the end cover forms a second end face for abutting the locking portion.

9. A quick weight loss weight block, comprising a plurality of weight pieces (61) and a movable shuttle shaft (62) movably arranged in each of the weight pieces, characterized in that: The utility model provides a quick weight reducing bolt for counterweight piece, including 10. The quick weight loss weight stack of claim 9, wherein: When the first spring (3) is in a compressed state, the pin rod (2) and the hand holding end (411) can be respectively inserted into the connecting holes (611) of two adjacent counterweight pieces (61).

Images