CN112451898A - Anti-loosening horizontal bar - Google Patents

Abstract

The invention relates to an anti-loosening horizontal bar which comprises a main frame, wherein the main frame is mainly formed by combining an outer pipe, a left inner pipe, a right inner pipe and a screw rod, and foot supports at two ends, wherein the rotatable direction between the inner pipe and the outer pipe is controlled by combining a pawl between the left inner pipe and the outer pipe and between the right inner. The ratchet mechanism capable of reversing in the forward direction and the reverse direction is additionally arranged between the inner pipe and the outer pipe of the single rod, and the adjusting button is screwed to the locking direction during installation. The left-handed inner tube and the right-handed inner tube can only extend outwards in a rotating mode and cannot be shortened inwards in the installation and use processes. Therefore, before disassembly, the steel plate can be clamped on supporting surfaces such as wall bodies or door frames on two sides more and more by stretching. Because the rotation is not possible in the reverse direction, the locking can be realized, but the loosening can not be realized. When the device needs to be detached, the device can be easily screwed down only by reversing the knob.

Description

Anti-loosening horizontal bar

Technical Field

The invention relates to the field of fitness equipment, in particular to an anti-loosening horizontal bar.

Background

Along with the development of society, the improvement of people's living standard also more and more pays more attention to the maintenance and the exercise of health. The more exercise equipment is needed. Particularly, the horizontal bar product is light and portable, and hardly occupies the use space, so that the horizontal bar product is particularly suitable for families. However, most of the products on the market do not have a locking mechanism, so that looseness in use is easily caused to cause accidents. A small part of the foot pad with the anti-loosening structure is also fixedly locked, so that the looseness caused by compression thinning or deformation of the pressure bearing surface of the foot pad after long-time use cannot be eliminated.

Disclosure of Invention

The invention aims to provide an anti-loose horizontal bar to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a locking horizontal bar is mainly formed by combining an outer tube, a left inner tube, a right inner tube, a screw rod and foot supports at two ends, wherein the rotatable direction between the inner tube and the outer tube is controlled by a pawl combination between the left inner tube and the right inner tube and between the left inner tube and the outer tube. The concrete structure is as follows: including the outer tube, the cover has middle bubble cotton on the outer tube, and the both ends cover that is close to the outer tube has the bubble cotton of shaking hands, and this has screw rod assembly in the outer tube, and the both ends of outer tube are connected with left inner tube and right inner tube respectively through screw rod assembly, and the outer end of left inner tube and right inner tube all is connected with the heel brace through the stopcock, all is equipped with pawl subassembly between left inner tube and right inner tube and the outer tube.

The invention is further improved in that: the outer sides of the foot supports are provided with foot support pads.

The invention is further improved in that: the pawl assembly comprises a pawl positioning sleeve and a pawl sleeve cover, and the pawl positioning sleeve and the pawl sleeve cover are connected through screws. A positioning boss and a positioning groove are arranged on the pawl positioning sleeve; the pawl sleeve cover is provided with a poking block hole; a positive and negative shifting block is assembled in the pawl positioning sleeve, and a platform and a screw hole are arranged on the positive and negative shifting block; a forward and reverse knob is arranged above the forward and reverse shifting block; a left pawl and a right pawl are respectively arranged on two sides of the positive and negative shifting block; a left pressure spring is arranged on the left side of the left pawl, and a right pressure spring is arranged on the right side of the right pawl; and an outer pipe gear sleeve is arranged above the left pawl and the right pawl, and teeth and grooves are arranged on the outer pipe gear sleeve. The positive and negative shifting blocks connected with the positive and negative knobs are ensured to rotate in the same direction with the positive and negative knobs through the platforms arranged on the positive and negative shifting blocks. When the positive and negative knob is in the unclamping position, positive and negative shifting block is in high left end position in the right side, and positive and negative shifting block left side arc surface compresses tightly left pawl this moment, and left pressure spring is compressed, and left pawl breaks away from the tooth on the outer tube gear sleeve. And the right pawl is pressed on the right plane of the positive and negative shifting block due to the rebound force of the right pressure spring, and the right pawl can just block the teeth on the outer pipe gear sleeve. Because the right pawl is blocked to the left side in the state, and only the right direction is supported by the right pressure spring, the outer pipe gear sleeve can only rotate anticlockwise at the moment and cannot rotate clockwise. In a similar way, when the positive and negative knob is rotated to the right side, the positive and negative shifting block is positioned at the left high right bottom, the right circular arc surface of the positive and negative shifting block compresses the right pawl, the right pressure spring is compressed, and the right pawl is separated from the teeth on the outer pipe gear sleeve. And the left pawl is pressed on the left plane of the positive and negative shifting block due to the rebound force of the left pressure spring, and the teeth on the outer pipe gear sleeve can be just clamped by the position of the left pawl at the moment. Because the left pawl is blocked to the right side direction under the state, only the left direction is supported by the left pressure spring, the outer pipe gear sleeve can only rotate clockwise at the moment and cannot rotate anticlockwise.

The invention is further improved in that: the two ends of the outer pipe are uniformly provided with a plurality of outer pipe bosses; the left inner tube is provided with a right-handed plug and a left inner tube groove, and the right inner tube is provided with a left-handed plug and a right inner tube groove. The screw rod component is provided with a right thread end, a left thread end and a screw rod fixing block, and the foot support is provided with a foot support boss.

The outer pipe gear sleeve is tightly sleeved with the bosses of the outer pipe through the grooves. Therefore, the outer pipe and the outer pipe gear sleeve form a whole, and the outer pipe gear sleeve rotates simultaneously when the outer pipe is rotated. The pawl positioning sleeve and the pawl sleeve cover are locked through the screw to form a whole, and the positioning boss arranged on the pawl positioning sleeve is clamped in the groove of the right inner tube, so that the whole formed by the right inner tube, the pawl positioning sleeve and the pawl sleeve cover cannot rotate relatively and can only move in the length direction. In a similar way, the right inner tube is tightly propped on the foot support through the tube plug, and at the moment, the right inner tube groove on the right inner tube is matched with the boss of the foot support, so that the right inner tube and the foot support are also equivalent to a whole in the circumferential direction, can not rotate relatively and can only move mutually in the length direction. The screw rod combination is arranged in the outer pipe in the middle and is fixed with the outer pipe through the screw rod fixing block (welded or riveted). Therefore, when the outer pipe is rotated, the screw rod combination inside the outer pipe is rotated, and the right-handed plug and the left-handed plug in the left inner pipe and the right inner pipe are driven to rotate correspondingly through the left-handed thread end and the right-handed thread end which are arranged at the two ends of the screw rod combination. When the device is installed and used, one hand can hold the outer pipe, the other hand can rotate the left inner pipe and the right inner pipe in sequence, and the width of the device is adjusted to be close to that of a door frame or other supporting walls to be installed. Then the anti-loosening horizontal bar is plugged into the frame, the outer pipe is rotated in the anticlockwise direction, and the right inner pipe is internally provided with the left-handed plug, so that the right inner pipe can only move towards the right side after being limited to rotate. In a similar way, the right-handed plug is arranged in the left inner pipe, so that the left inner pipe can move to the left side at the moment, and the locking purpose is achieved. Due to the effect of the pawl combination, before the forward and reverse knobs are not pulled, the outer tube can only rotate towards the anticlockwise direction, namely, the horizontal bar can only be locked and cannot be loosened, and therefore the purpose of preventing looseness is achieved. In the long-time use process, if the foot support pad is compressed to be thin or the supporting surface deforms, the horizontal bar can be loosened, however, the outer pipe which is gripped by a user in the use process can passively rotate along with the force of the user and can only rotate in the anticlockwise direction, and therefore the inner pipes on the two sides naturally stretch outwards to complement the compressed thin or deformed part of the foot support pad. The horizontal bar is always in a locking state, thereby ensuring the use safety. If the disassembly is needed, the outer tube can be easily taken down by only adjusting the forward and reverse knobs to the other side and rotating the outer tube clockwise.

Compared with the prior art, the invention has the beneficial effects that:

the ratchet mechanism capable of reversing in the forward direction and the reverse direction is additionally arranged between the inner pipe and the outer pipe of the single rod, and the adjusting button is screwed to the locking direction during installation. The left-handed inner tube and the right-handed inner tube can only extend outwards in a rotating mode and cannot be shortened inwards in the installation and use processes. Therefore, before disassembly, the door frame can be ensured to be longer and longer, and can be clamped on supporting surfaces of wall bodies or door frames on two sides. Because the rotation is not possible in the reverse direction, the locking can be realized only, and the loosening can not be realized. When the device needs to be detached, the device can be easily screwed down only by reversing the knob.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a view showing the internal cross-section of the present invention;

FIG. 3 is a perspective view of the pawl assembly of the present invention;

FIG. 4 is a schematic view of the pawl assembly of the present invention;

FIG. 5 is an exploded view of the pawl assembly of the present invention;

FIG. 6 is an exploded schematic view of the present invention;

FIG. 7 is an enlarged view of the foot support portion of the present invention;

1. an outer tube; 2. A left inner tube; 3. a right inner tube; 4. a pawl assembly; 5. soaking cotton in hand; 6. soaking cotton in the middle; 7. a foot support; 8. a foot support pad; 9. a pipe plug; 10. a screw assembly; 11. a screw; 12. a shifting block screw;

1.1, an outer pipe boss; 2.1, a right-handed plug; 2.2, a left inner pipe groove; 3.1, a left-handed plug; 3.2, a right inner tube groove; 4.1, a positive and negative knob; 4.2, a positive and negative shifting block; 4.2.1, a platform; 4.2.2, screw holes; 4.3.1, a left pawl; 4.3.2, right pawl; 4.4.1, a left pressure spring; 4.4.2, a right pressure spring; 4.5, an outer pipe gear sleeve; 4.5.1, teeth; 4.5.2, grooves; 4.6, a pawl positioning sleeve; 4.6.1, positioning a boss; 4.6.2, positioning the groove; 4.7, a pawl sleeve cover; 4.7.1, a shifting block hole; 7.1, a right-handed thread end of a foot support boss 10.1; 10.2, left-handed threaded end; 10.3, screw fixing block.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

Referring to fig. 1, the embodiment provides a technical solution: the utility model provides a locking horizontal bar, includes outer tube 1, and the cover has middle bubble cotton 6 on the outer tube 1, and the both ends cover that is close to outer tube 1 has the bubble cotton 5 of shaking hands, and this has screw assembly 10 in the outer tube 1, and the both ends of outer tube 1 are connected with left inner tube 2 and right inner tube 3 respectively through screw assembly 10, and the outer end of left inner tube 2 and right inner tube 3 all is connected with heel brace 7 through stopcock 9. The outer sides of the foot supports 7 are provided with foot support pads 8, so that the contact area with the supporting surface is increased, the downward sliding resistance of the product is increased when the foot support is used, and the safety of a user is ensured. Pawl assemblies 4 are arranged between the left inner tube 2 and the right inner tube 3 and the outer tube 1, and the rotatable directions between the inner tube and the outer tube are controlled through the pawl assemblies 4 between the left inner tube 2 and the right inner tube 3 and the outer tube 1.

The pawl assembly 4 comprises a pawl positioning sleeve 4.6 and a pawl sleeve cover 4.7, and the pawl positioning sleeve 4.6 and the pawl sleeve cover 4.7 are connected through a screw 11.

A positioning boss 4.6.1 and a positioning groove 4.6.2 are arranged on the pawl positioning sleeve 4.6; a shifting block hole 4.7.1 is arranged on the pawl sleeve cover 4.7; a positive and negative shifting block 4.2 is assembled in the pawl positioning sleeve 4.6, and a platform 4.2.1 and a screw hole 4.2.2 are arranged on the positive and negative shifting block 4.2; a forward and reverse knob 4.1 is arranged above the forward and reverse shifting block 4.2; a left pawl 4.3.1 and a right pawl 4.3.2 are respectively arranged on two sides of the positive and negative shifting block 4.2; a left pressure spring 4.4.1 is arranged on the left side of the left pawl 4.3.1, and a right pressure spring 4.4.2 is arranged on the right side of the right pawl 4.3.2; an outer pipe gear sleeve 4.5 is arranged above the left pawl 4.3.1 and the right pawl 4.3.2, and teeth 4.5.1 and grooves 4.5.2 are arranged on the outer pipe gear sleeve 4.5.

The two ends of the outer pipe 1 are uniformly provided with a plurality of outer pipe bosses 1.1; the left inner tube 2 is provided with a right-handed plug 2.1 and a left inner tube groove 2.2, and the right inner tube 3 is provided with a left-handed plug 3.1 and a right inner tube groove 3.2.

The foot support 7 is provided with a foot support boss 7.1. The screw component 10 is provided with a right thread end 10.1, a left thread end 10.2 and a screw fixing block 10.3.

The front and back knob 4.1 is dialed to the loosening position, the front and back shifting block 4.2 is located at the left high bottom position on the right side, the circular arc surface on the left side of the front and back shifting block 4.2 compresses the left pawl 4.3.1, the left pressure spring 4.4.1 is compressed, and the left pawl 4.3.1 is separated from the teeth 4.5.1 on the outer pipe gear sleeve 4.5. And the right pawl 4.3.2 is pressed on the right plane of the forward and backward shifting block 4.2 due to the rebound force of the right pressure spring 4.4.2, and the right pawl 4.3.2 can just block the teeth on the outer pipe gear sleeve 4.5. Since the right pawl 4.3.2 is blocked to the left in this state and is supported only by the right compression spring 4.4.2 to the right, the outer tube gear sleeve 4.5 can only rotate counterclockwise and cannot rotate clockwise at this time. At this time, the right inner tube 3 is limited from rotating due to the matching of the right inner tube groove 3.2, the foot support boss 7.1 and the positioning boss 4.6.1 on the pawl positioning sleeve 4.6. Therefore, when the outer tube 1 drives the riveted screw assembly 10 to rotate counterclockwise, the left-handed thread end 10.2 of the outer tube drives the left-handed plug 3.1 on the right inner tube 3 to move leftward, so that the right inner tube 3 is driven to move leftward, and the horizontal bar can be loosened. In order to prevent the pawl assemblies 4 on the two sides from being in different positions to cause interference of forward and reverse rotation directions, the forward and reverse knobs 4.1 on the two sides are required to be shifted to the same side when in use, so that the rotation directions of the left and right rotating plugs 3.1 and 2.1 in the left and right inner tubes 2 and 3 are opposite due to the fact that the two pawl assemblies 4 are symmetrically arranged, and the right and left rotating plugs are just consistent in the tightening direction. During assembly, a positive and negative mark can be pasted at the position of the positive and negative knob 4.1, so that the adjustment by a user is facilitated. When the forward and reverse knobs 4.1 are shifted to the locking position at the other side, the outer tube is rotated clockwise, the left and right inner tubes 2 and 3 move leftwards and rightwards, so that the whole product is extended, and the locking purpose is achieved.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, article, or apparatus.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

Exemplary embodiments according to the present application will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to only the embodiments set forth herein. It is to be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art, in the drawings, it is possible to enlarge the thicknesses of layers and regions for clarity, and the same devices are denoted by the same reference numerals, and thus the description thereof will be omitted.

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

Claims (7)

1. The utility model provides a locking horizontal bar, includes outer tube (1), the cover has middle bubble cotton (6) on outer tube (1), is close to the both ends cover of outer tube (1) has the bubble cotton (5) of shaking hands, its characterized in that: be equipped with screw rod assembly (10) in outer tube (1), the both ends of outer tube (1) are passed through screw rod assembly (10) are connected with left inner tube (2) and right inner tube (3) respectively, left side inner tube (2) with the outer end of right inner tube (3) all is connected with heel brace (7) through stopcock (9), left side inner tube (2) with right side inner tube (3) with all be equipped with pawl subassembly (4) between outer tube (1).

2. A check bar as defined in claim 1, wherein: the pawl assembly (4) comprises a pawl positioning sleeve (4.6) and a pawl sleeve cover (4.7), and a positioning boss (4.6.1) and a positioning groove (4.6.2) are arranged on the pawl positioning sleeve (4.6); a poking block hole (4.7.1) is arranged on the pawl sleeve cover (4.7); a positive and negative shifting block (4.2) is assembled in the pawl positioning sleeve (4.6), and a platform (4.2.1) and a screw hole (4.2.2) are arranged on the positive and negative shifting block (4.2); a forward and reverse knob (4.1) is arranged above the forward and reverse shifting block (4.2); a left pawl (4.3.1) and a right pawl (4.3.2) are respectively arranged on two sides of the positive and negative shifting block (4.2); a left pressure spring (4.4.1) is arranged on the left side of the left pawl (4.3.1), and a right pressure spring (4.4.2) is arranged on the right side of the right pawl (4.3.2); an outer pipe gear sleeve (4.5) is arranged above the left pawl (4.3.1) and the right pawl (4.3.2), and teeth (4.5.1) and grooves (4.5.2) are arranged on the outer pipe gear sleeve (4.5).

3. A check bar as defined in claim 2, wherein: the pawl positioning sleeve (4.6) is connected with the pawl sleeve cover (4.7) through a screw (11).

4. A check bar as defined in claim 1, wherein: the two ends of the outer pipe (1) are uniformly provided with a plurality of outer pipe bosses (1.1); the left inner tube (2) is provided with a right-handed plug (2.1) and a left inner tube groove (2.2), and the right inner tube (3) is provided with a left-handed plug (3.1) and a right inner tube groove (3.2).

5. A check bar as defined in claim 1, wherein: and foot support pads (8) are arranged on the outer sides of the foot supports (7).

6. A check bar as defined in claim 1, wherein: and a foot support boss (7.1) is arranged on the foot support (7).

7. A check bar as defined in claim 1, wherein: the screw component (10) is provided with a right thread end (10.1), a left thread end (10.2) and a screw fixing block (10.3).

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