CN219001017U - Back-opening stick capable of changing angle - Google Patents

Abstract

The utility model relates to a back opening rod with changeable angles, which is used for solving the problem that the existing back opening rod does not have an angle adjusting function; comprises a first rod, a second rod and a connecting structure between the rods; wherein the inter-rod connection structure comprises an upper connection structure and a lower connection structure; the upper connecting structure is provided with a through hole for passing through the first rod, and the lower connecting structure is provided with a through hole for passing through the second rod; the first rod and the second rod are connected through a rotating shaft; mushroom heads for clamping are arranged at two ends of the rotating shaft; the rotating shaft is positioned between the upper connecting structure and the lower connecting structure; the first rod and the second rod are rotatably connected through the rotating shaft, so that the rotation angle between the first rod and the second rod is adjusted; the first rod penetrates through the upper connecting structure, the second rod penetrates through the lower connecting structure, the rotating shaft is arranged between the upper connecting structure and the lower connecting structure, the protection of the hinging part is achieved, the structural strength of the device is improved, and meanwhile the ornamental effect of the device is improved.

Description

Back-opening stick capable of changing angle

Technical Field

The utility model relates to the field of fitness equipment, in particular to a back opening stick with a changeable angle.

Background

In the field of fitness, shaping of posture is important, including correction of posture. The back opening stick is an auxiliary instrument for correcting humpback and neck forward tilting, and can also be used for stretching bones and muscles and relieving fatigue of cervical vertebra and upper body muscles. In the process of using the back opening stick, the transverse straight sticks of the two straight sticks which are arranged in a cross manner are clamped at the arm bending position of the arm across the back, the vertical straight sticks are propped against the cervical vertebra, and the two hands apply certain force forwards, so that the purpose of stretching the tendons and bones is achieved.

The existing back opening stick is usually at least simply put two straight sticks together, and the two straight sticks are fixedly connected or not connected, but simply put together. For the former, two rollers are fixedly connected to form a cross structure, so that a large space is occupied, and the storage and carrying are inconvenient; for the latter, the vertical straight stick is located between horizontal straight stick and the back, and the pressure of centre gripping produces frictional force, makes vertical straight stick not drop, and such structure does not possess stability, usually needs other people to assist, erects the stick and drops easily moreover. Therefore, a back opening rod which is stable in structure and convenient to store and can change included angles is needed.

Disclosure of Invention

The utility model aims to solve the defects of the prior art and provides an angle-changeable back opening stick.

In order to solve the problems, the utility model adopts the following scheme:

an angle-changeable back opening stick comprises a first rod, a second rod and a connecting structure between the first rod and the second rod; wherein the inter-rod connection structure comprises an upper connection structure and a lower connection structure; the upper connecting structure is provided with a through hole for passing through the first rod, and the lower connecting structure is provided with a through hole for passing through the second rod; the first rod and the second rod are connected through a rotating shaft; mushroom heads for clamping are arranged at two ends of the rotating shaft; the rotation shaft is located between the upper connection structure and the lower connection structure.

Further, the upper connecting structure comprises an upper shell and an upper cover; wherein, a through hole perpendicular to the axial direction of the first through hole is arranged on the side wall of the upper shell, and the through hole is used for penetrating the first rod; an upper cover body is fixedly arranged at one end of the upper shell; the upper shell is in a round tubular shape as a whole; the lower connecting structure comprises a lower shell and a lower cover body, wherein the lower cover body is connected with the rotating shaft or the lower shell; the side surface of the lower shell is provided with a through hole for passing through the second rod; the lower shell is in a round tubular shape as a whole.

Further, a clamping structure is further arranged between the upper connecting structure and the lower connecting structure, and comprises a button, a spring, a four-pin card and an upper clamping groove; the button is arranged in a first through hole in the middle of the upper shell, and the outer side surface of the first through hole is connected with the inner side surface of the upper shell; the button is also connected with the rotating shaft; a spring is sleeved on the outer side of the rotating shaft and is positioned between the mushroom head and the rod I, which are positioned on the rotating shaft and are close to one end of the button; the spring is positioned between the button and the lower connecting structure in the through hole I and the rod I; the upper cover body is also provided with a hole site for placing the button, so that the button is exposed on the surface of the upper cover body, and the upper cover body can prop against the button; the four-pin card is positioned in the lower shell and comprises a base and clamping pins, wherein the base is circular, and the base is connected with the lower cover body through a straight arm buckle; the four clamping pins are arranged on one side of the round base close to the upper connecting structure, and the adjacent clamping pins are separated by an included angle of 90 degrees relative to the circle center of the base; the clamping pin extends out of the lower shell and into the upper shell at one side far away from the base; four clamping pins, two clamping pins are in a group, and the two clamping pins are respectively positioned at two sides of the second rod; the upper clamping groove is arranged on the inner side of the upper shell, the upper clamping groove is square-groove-shaped, two ends of the upper clamping groove are connected with the inner wall of the upper shell, and a first rod penetrating through the upper cover body is further arranged in the upper clamping groove; two sides of the upper clamping groove are clamped with clamping pins extending into the upper shell.

Further, the clamping pin is in a 1/4 sector cylinder shape, the section of the clamping pin is 1/4 circle, the side face of the clamping pin comprises two planes and an arc surface, the arc surface is close to the edge of the base, and the two planes are close to the inside of the base.

Further, the clamping structure further comprises a lower clamping groove, wherein the lower clamping groove is arranged in the lower shell, and two ends of the lower clamping groove are respectively connected with the inner wall of the lower shell; the lower clamping groove is in a square groove shape, and a second rod is arranged in the lower clamping groove; two of the four clamping pins are in a group, and the two groups are respectively arranged at two sides of the lower clamping groove.

Further, the first through hole is arranged coaxially with the upper shell, the outer side wall of the first through hole is connected with the inner side wall of the upper shell through a sheet structure, and the first through hole and the upper clamping groove are respectively arranged on two sides of the sheet structure; the upper shell, the sheet structure, the first through hole and the upper clamping groove are integrally manufactured.

Further, the upper cover body is connected with the upper shell through a straight arm buckle or a column body in a clamping way.

Further, the outer side surfaces of the upper shell of the upper connecting structure and the lower shell of the lower connecting structure are provided with patterns.

Further, a limiting protrusion for limiting the pressing degree of the button is arranged on the inner side of the first through hole; the distance between the limiting bulge and the button is larger than the joint length between the clamping pin and the upper clamping groove in the length direction of the clamping pin.

Furthermore, the first rod and the second rod are also provided with sponge sleeves; the sponge sleeves are respectively arranged at the two ends of the first rod and the second rod.

The beneficial effects of the utility model are as follows:

the first rod and the second rod are rotatably connected through the rotating shaft, so that the rotation angle between the first rod and the second rod is adjusted;

the first rod passes through the upper connecting structure, the second rod passes through the lower connecting structure, and the rotating shaft is arranged between the upper connecting structure and the lower connecting structure, so that the protection of the hinging part is realized, the structural strength of the device is improved, and the ornamental effect of the device is improved;

the clamping structure is arranged between the upper connecting structure and the lower connecting structure, so that the first rod and the second rod have rotation conversion and simultaneously have the function of clamping and fixing at a set angle;

the outer side surfaces of the upper connecting structure and the lower connecting structure are also provided with patterns, so that the angle between the first adjusting rod and the second adjusting rod can be conveniently rotated;

the limiting bulge for limiting the pressing degree of the button is further arranged on the inner side of the first through hole, so that the pressing degree of the button is controlled, and the clamping and separation of the clamping pin and the upper clamping groove are conveniently realized;

by arranging the sponge sleeves at the two ends of the first rod and the second rod respectively, the comfort level of the first rod or the second rod when contacting with the arm is improved.

Drawings

FIG. 1 is a schematic illustration of a first embodiment of the present utility model;

fig. 2 is a rotational accommodation schematic diagram according to a first embodiment of the present utility model;

FIG. 3 is a split block diagram of a first embodiment of the present utility model;

FIG. 4 is an overall front view of a device according to a first embodiment of the present utility model;

FIG. 5 is a schematic view in section B-B of FIG. 4;

FIG. 6 is a schematic view of the inner structure of the upper housing according to the first embodiment of the present utility model;

fig. 7 is a schematic diagram of an upper housing and an inner structure thereof according to a first embodiment of the present utility model;

fig. 8 is a schematic view of the inner structure of the lower housing according to the first embodiment of the present utility model;

FIG. 9 is a schematic diagram of a four-pin card according to a first embodiment of the present utility model;

fig. 10 is a schematic view of an upper cover according to a first embodiment of the utility model.

The attached drawings are used for identifying and describing: rod one 1, sponge sleeve 11, rod two 2, rod connecting structure 3, upper connecting structure 31, upper shell 32, upper cover 33, through hole one 34, sheet structure 35, lower connecting structure 36, lower shell 37, lower cover 38, cross structure 39, rotation shaft 4, clamping structure 5, button 51, spring 52, four-foot card 53, base 54, straight arm buckle 55, clamping foot 56, upper clamping groove 57, lower clamping groove 58.

Detailed Description

Other advantages and effects of the present utility model will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present utility model with reference to specific examples. The utility model may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present utility model. It should be noted that the following embodiments and features in the embodiments may be combined with each other without conflict.

It should be noted that the illustrations provided in the following embodiments merely illustrate the basic concept of the present utility model by way of illustration, and only the components related to the present utility model are shown in the drawings and are not drawn according to the number, shape and size of the components in actual implementation, and the form, number and proportion of the components in actual implementation may be arbitrarily changed, and the layout of the components may be more complicated.

Embodiment one:

as shown in fig. 1 to 10, an angle-changeable back-opening stick comprises a first rod 1, a second rod 2 and an inter-rod connecting structure 3; wherein the inter-rod connection structure 3 includes an upper connection structure 31 and a lower connection structure 36; the upper connecting structure 31 is provided with a through hole for passing through the first rod 1, and the lower connecting structure 36 is provided with a through hole for passing through the second rod 2; the first rod 1 and the second rod 2 are connected through the rotating shaft 4, so that the first rod 1 and the second rod 2 can rotate relatively; mushroom heads for clamping are arranged at two ends of the rotating shaft 4; the rotation shaft 4 is located between the upper connection structure 31 and the lower connection structure 36.

The upper connecting structure 31 comprises an upper shell 32 and an upper cover 33; wherein a through hole perpendicular to the axial direction of the first through hole 34 is provided on the side wall of the upper case 32, the through hole being for passing through the first lever 1; an upper cover 33 is fixedly arranged at one end of the upper shell 32; the upper housing 32 has a circular tubular shape as a whole.

The lower connecting structure 36 comprises a lower housing 37 and a lower cover 38, wherein the lower cover 38 is connected with the rotating shaft 4 or the lower housing 37, and in this case the lower cover 38 is connected with the rotating shaft 4; the side surface of the lower case 37 is provided with a through hole for passing through the second lever 2; the lower housing 37 has a circular tubular shape as a whole.

A clamping structure 5 is further arranged between the upper connecting structure 31 and the lower connecting structure 36, and the clamping structure 5 comprises a button 51, a spring 52, a four-pin card 53 and an upper clamping groove 57; the button 51 is arranged in a first through hole 34 in the middle of the upper shell 32, and the outer side surface of the first through hole 34 is connected with the inner side surface of the upper shell 32; the button 51 is also connected with the rotation shaft 4; a spring 52 is arranged between the mushroom head at one end of the rotating shaft 4, which is close to the button 51, and the rod one 1, in this example, the spring 52 is sleeved on the outer side of the rotating shaft 4 and is positioned in the through hole one 34, so that when the rotating shaft 4 is not acted by external force, the spring 52 pushes the rotating shaft 4 away from the rod one 1, and the button 51 is jacked up by the rotating shaft 4; lever one 1 is located between the push button 51 and the lower connecting structure 36; the upper cover body 33 is also provided with a hole site for placing the button 51, so that the upper cover body 33 can prop against the button 51, and the button 51 is prevented from being separated due to the thrust of the spring 52; the four-pin card 53 is located in the lower casing 37, the four-pin card 53 includes a base 54 and a clamping pin 56, wherein the base 54 is circular, the base 54 is connected with the lower cover 38 through a straight arm buckle 55, and in this case, the straight arm buckle 55 arranged at the edge of the lower cover 38 is clamped with the edge of the base 54; the four clamping pins 56 are all arranged on one side of the circular base 54 close to the upper connecting structure 31, and adjacent clamping pins 56 are separated by an included angle of 90 degrees with respect to the circle center of the base 54, and it is noted that one side of the clamping pins 56 far away from the base 54 extends out of the lower shell 37 and into the upper shell 32; four clamping pins 56, two clamping pins 56 are in a group, and the two groups of clamping pins 56 are respectively positioned at two sides of the second rod 2; the upper clamping groove 57 is arranged on the inner side of the upper shell 32, the upper clamping groove 57 is square-groove-shaped, two ends of the upper clamping groove 57 are connected with the inner wall of the upper shell 32, and a first rod 1 penetrating through the upper cover body 33 is further arranged in the upper clamping groove 57; both sides of the upper clamping groove 57 are clamped with clamping pins 56 extending into the upper shell 32; in this example, the upper clamping groove 57 is also connected to the first through hole 34. In the implementation process, the clamping pin 56 is clamped on the side surface of the upper clamping groove 57, so that the upper clamping groove 57 is matched with the clamping pin 56 to realize clamping; after the button 51 is pressed, the engagement between the upper clamping groove 57 and the clamping pin 56 can be released, so that the second rod 2 can rotate relative to the first rod 1, and after the second rod is rotated by any integer multiple of 90 degrees, the clamping pin 56 can be restored to the two sides of the upper clamping groove 57, the adjustment of the set angle between the two straight rods is realized, and the connection stability at the set angle is maintained.

The clamping pin 56 is in a 1/4 sector cylinder shape, the section of the clamping pin is 1/4 of a circle, the side surface of the clamping pin 56 comprises two planes and an arc surface, wherein the arc surface is arranged close to the edge of the base 54, and the two planes are arranged close to the inside of the base 54; by arranging the two planes on the side surface of the clamping pin 56, the contact area of the clamping pin 56 when the upper clamping groove 57 contacts is increased, and the clamping stability of the clamping pin 56 and the upper clamping groove 57 when in clamping is ensured.

The side of keeping away from lower lid 38 in the lower casing 37 still is provided with bellied cross structure 39, and the edge of cross structure 39 is connected with the inner wall of lower casing 37, leaves 1/4 circular vacancy between cross structure 39 and lower casing inner wall for pass and restriction joint foot 56, the angle between fixed joint foot 56 and the lower casing 37, on the other hand bellied cross structure 39 can inlay in last casing 32 inside for when joint foot 56 and last draw-in groove 57 joint, lower casing 37 also can cooperate with last casing 32, reinforcing connection stability.

The clamping structure 5 further comprises a lower clamping groove 58, wherein the lower clamping groove 58 is arranged in the lower shell 37, and two ends of the lower clamping groove 58 are respectively connected with the inner wall of the lower shell 37; the lower clamping groove 58 is also square-shaped, and is internally provided with a second rod 2; two of the four clamping pins 56 are a group, and the two groups of clamping pins 56 are respectively arranged at two sides of the lower clamping groove 58.

The first through hole 34 provided with the button 51 and the spring 52 is arranged coaxially with the upper shell 32, the outer side wall of the first through hole 34 is connected with the inner side wall of the upper shell 32 through a sheet structure 35, and the first through hole 34 and an upper clamping groove 57 are respectively arranged on two sides of the sheet structure 35; in this example, the upper housing 32, the sheet-like structure 35, the through-hole one 34, and the upper card slot 57 are integrally formed.

In this example, the upper cover 33 is connected with the upper casing 32 through a straight arm buckle 55, wherein a buckle connecting hole is formed in the sheet structure 35 of the upper casing 32, and a straight arm buckle 55 is arranged on one side, close to the upper casing 32, of the upper cover 33 to realize the clamping connection; it should be noted that, in some other embodiments, other removable connections between the upper cover 33 and the upper housing 32 may be used, including a post clip, or the upper cover 33 and the upper housing 32 may be integrally formed.

The outer side surfaces of the upper connecting structure 31 and the lower connecting structure 36 are also provided with patterns which are convenient for gripping and rotating, in this example, the patterns are strip-shaped grooves which are arranged in parallel, wherein the length direction of the grooves is parallel to the rotating shaft 4.

The inner side of the first through hole 34 is further provided with a limiting protrusion for limiting the pressing degree of the button 51, so that after the button 51 is pressed for a set distance, the button 51 and the limiting protrusion are blocked, and the button is difficult to continuously press. The distance between the limiting bulge and the button 51 is larger than the attaching length between the clamping pin 56 and the upper clamping groove 57 in the length direction of the clamping pin 56; it is ensured that the snap fit between the snap pin 56 and the upper snap groove 57 can be released after the push button 51 is pushed.

The two ends of the first rod 1 and the second rod 2 are respectively provided with a sponge sleeve 11, wherein the sponge sleeves 11 with set lengths are respectively arranged at the two ends of the first rod 1 and the two ends of the second rod 2, and the comfort level of the first rod 1 or the second rod 2 in contact with the arm is improved through the arrangement of the sponge sleeves 11.

It should be noted that, in this example, the first rod 1 and the second rod 2 are cylindrical straight rods, so that comfort level is further improved when the first rod contacts with the arm bends and contacts with the back; it should be noted that in some other embodiments, the first rod 1 and the second rod 2 may have other shapes, including a combination of a dovetail rod and a cylindrical rod, etc.

In the implementation process, the rotating angle adjustment between the first rod 1 and the second rod 2 is realized by arranging the first rod 1 and the second rod 2 to be rotationally connected through the rotating shaft 4; the first rod 1 passes through the upper connecting structure 31, the second rod 2 passes through the lower connecting structure 36, and the rotating shaft 4 is arranged between the upper connecting structure 31 and the lower connecting structure 36, so that the protection of a hinge part is realized, the structural strength of the device is improved, and the ornamental effect of the device is improved; by arranging the clamping structure 5 between the upper connecting structure 31 and the lower connecting structure 36, the rod 1 and the rod 2 have the functions of rotating and changing and clamping and fixing at a set angle, and the set angle is an integral multiple of 90 degrees in the example, wherein the clamping structure can be used for opening back when the rod 1 and the rod 2 are spaced by 90 degrees, and the occupied space is reduced when the rod 1 and the rod 2 are parallel to each other, so that the clamping structure is convenient to carry and store; by providing patterns on the outer sides of the upper and lower connection structures 31 and 36, it is convenient to rotate the angle between the first and second adjustment rods 1 and 2; the limiting bulge for limiting the pressing degree of the button 51 is further arranged on the inner side of the first through hole 34, so that the pressing degree of the button 51 is controlled, and the clamping and separation of the clamping pin 56 and the upper clamping groove 57 are facilitated; by arranging the sponge sleeves 11 at the two ends of the first rod 1 and the second rod 2 respectively, the comfort level of the first rod 1 or the second rod 2 when contacting with the arm is improved.

The above description is only one specific example of the present utility model and does not constitute any limitation on the present utility model. It will be apparent to those skilled in the art that various modifications and changes in form and details may be made without departing from the principles and construction of the utility model, but these modifications and changes based on the inventive concept are still within the scope of the appended claims.

Claims (10)

1. The back opening stick capable of changing the angle is characterized by comprising a first rod (1), a second rod (2) and a connecting structure (3) between the rods; wherein the inter-rod connection structure (3) comprises an upper connection structure (31) and a lower connection structure (36); the upper connecting structure (31) is provided with a through hole for passing through the first rod (1), and the lower connecting structure (36) is provided with a through hole for passing through the second rod (2); the first rod (1) and the second rod (2) are connected through a rotating shaft (4); mushroom heads for clamping are arranged at two ends of the rotating shaft (4); the rotation shaft (4) is located between the upper connection structure (31) and the lower connection structure (36).

2. The angle-changeable back-opening stick according to claim 1, wherein the upper connecting structure (31) comprises an upper housing (32) and an upper cover (33); wherein a through hole perpendicular to the axial direction of the first through hole (34) is arranged on the side wall of the upper shell (32), and the through hole is used for penetrating the first rod (1); an upper cover body (33) is fixedly arranged at one end of the upper shell (32); the upper shell (32) is in a round tubular shape as a whole; the lower connecting structure (36) comprises a lower shell (37) and a lower cover body (38), wherein the lower cover body (38) is connected with the rotating shaft (4) or the lower shell (37); the side surface of the lower shell (37) is provided with a through hole for passing through the second rod (2); the lower housing (37) is circular and tubular as a whole.

3. The angle-changeable back opening stick according to claim 2, wherein a clamping structure (5) is further arranged between the upper connecting structure (31) and the lower connecting structure (36), and the clamping structure (5) comprises a button (51), a spring (52), a four-pin card (53) and an upper clamping groove (57); the button (51) is arranged in a first through hole (34) in the middle of the upper shell (32), and the outer side surface of the first through hole (34) is connected with the inner side surface of the upper shell (32); the button (51) is also connected with the rotating shaft (4); a spring (52) is sleeved on the outer side of the rotating shaft (4), and the spring (52) is positioned between the mushroom head, which is positioned on the rotating shaft (4) and is close to one end of the button (51), and the first rod (1); the spring (52) is positioned in the first through hole (34), and the first rod (1) is positioned between the button (51) and the lower connecting structure (36); the upper cover body (33) is also provided with a hole site for placing the button (51), so that the button (51) is exposed on the surface of the upper cover body (33), and the upper cover body (33) can prop against the button (51); the four-pin card (53) is positioned in the lower shell (37), the four-pin card (53) comprises a base (54) and clamping pins (56), the base (54) is round, and the base (54) is connected with the lower cover body (38) through a straight arm buckle (55); the four clamping pins (56) are arranged on one side, close to the upper connecting structure (31), of the round base (54), and the adjacent clamping pins (56) are separated by an included angle of 90 degrees with respect to the circle center of the base (54); the clamping pin (56) extends out of the lower shell (37) and into the upper shell (32) at one side far away from the base (54); four clamping pins (56), two of which are arranged on two sides of the second rod (2); the upper clamping groove (57) is arranged on the inner side of the upper shell (32), the upper clamping groove (57) is square-groove-shaped, two ends of the upper clamping groove (57) are connected with the inner wall of the upper shell (32), and a first rod (1) penetrating through the upper cover body (33) is further arranged in the upper clamping groove (57); both sides of the upper clamping groove (57) are clamped with clamping pins (56) extending into the upper shell (32).

4. A switchable angle open stick according to claim 3, wherein the clamping leg (56) has a 1/4 sector-like cylindrical shape with a 1/4 round cross section, the side of the clamping leg (56) comprises two planes and an arc surface, wherein the arc surface is arranged near the edge of the base (54), and the two planes are arranged near the inside of the base (54).

5. A switchable angle backing bar according to claim 3, wherein the clamping structure (5) further comprises a lower clamping groove (58), wherein the lower clamping groove (58) is arranged in the lower shell (37), and two ends of the lower clamping groove (58) are respectively connected with the inner wall of the lower shell (37); the lower clamping groove (58) is square-groove-shaped, and a second rod (2) is arranged in the lower clamping groove; two of the four clamping pins (56) are arranged on two sides of the lower clamping groove (58) respectively.

6. A switchable angle open stick according to claim 3, wherein the first through hole (34) is arranged coaxially with the upper housing (32), the outer side wall of the first through hole (34) is connected with the inner side wall of the upper housing (32) through a sheet structure (35), and the two sides of the sheet structure (35) are respectively provided with the first through hole (34) and the upper clamping groove (57); the upper shell (32), the sheet structure (35), the first through hole (34) and the upper clamping groove (57) are integrally manufactured.

7. The angle-changeable back-opening stick according to claim 2, wherein the upper cover body (33) and the upper shell body (32) are connected by a straight arm buckle (55) or a column body clamping connection.

8. The angle-changeable back-opening stick according to claim 2, wherein the outer side surfaces of the upper shell (32) of the upper connecting structure (31) and the lower shell (37) of the lower connecting structure (36) are provided with patterns.

9. A switchable angle open stick according to claim 3, characterized in that a limit projection for limiting the degree of depression of the push button (51) is provided on the inner side of the first through hole (34); the distance between the limiting bulge and the button (51) is larger than the attaching length between the clamping pin (56) and the upper clamping groove (57) in the length direction of the clamping pin (56).

10. The angle-changeable back-opening stick according to claim 1, wherein the first rod (1) and the second rod (2) are further provided with a sponge sleeve (11); the sponge sleeves (11) are respectively arranged at the two ends of the first rod (1) and the second rod (2).

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