Foldable handrails and treadmill

Abstract

This utility model discloses a foldable handrail and a treadmill. The foldable handrail includes a handrail and a base. A pivot is provided on the handrail, perpendicular to the handrail. A limiting block protruding from the side wall of the pivot is provided on the pivot, and the limiting block is fixedly connected to the pivot. The base has a connecting hole. The connecting hole has a first channel and a second channel. The first channel extends axially along the connecting hole to allow the pivot to be inserted into the connecting hole. The second channel is circumferentially positioned along the connecting hole. The limiting block can slide within the first channel, allowing the handrail to rotate on the base with the pivot and abutting against the end of the first channel to limit the rotation position of the handrail. This utility model's handrail simultaneously achieves detachable and foldable functions. When the handrail is unfolded, the end of the second channel provides support to the limiting block, enabling the handrail to withstand greater pressure and meeting the load-bearing requirements of a treadmill handrail.

Description

Technical Field

[0001] This utility model relates to the field of fitness equipment, and in particular to a foldable handrail and a treadmill. Background Technology

[0002] Modern treadmills not only need to meet users' basic running needs, but also their needs for convenient operation and storage. Therefore, the functions of modern treadmills are gradually developing towards greater user-friendliness, multi-functionality, user comfort, and reasonable storage.

[0003] Given the limited indoor living space, many fitness enthusiasts are deterred from using the bulky treadmill. Therefore, based on the structural characteristics of treadmills and in order to reduce the indoor space they occupy, many models that can be folded or stood upright have appeared on the market, providing consumers with more options for where to place their treadmills and winning widespread praise from consumers.

[0004] To enable treadmills to change size like Transformers, telescopic or folding structures are commonly used and effective solutions. Other structures that can reduce space in a treadmill include the running board's uprights and side handrails. Because treadmills have relatively strict load-bearing requirements, while existing treadmill side handrails also have folding functions, their load-bearing capacity is often low and cannot meet the greater load-bearing requirements of treadmill side handrails. Utility Model Content

[0005] The purpose of this utility model is to provide a foldable handrail and treadmill, so as to solve the problem that the load-bearing capacity of existing foldable handrails is low and cannot meet the requirements of large load-bearing capacity. The specific technical solution is as follows: One aspect of this utility model is to provide a foldable armrest. The device includes an armrest and a base. The armrest has a pivot shaft perpendicular to the armrest, and a limiting block protruding from the side wall of the pivot shaft is fixedly connected to the pivot shaft. The base has a connecting hole with a first channel and a second channel. The first channel extends along the axial direction of the connecting hole so that the limiting block can be inserted into the connecting hole. The second channel is arranged along the circumferential direction of the connecting hole, and the limiting block can slide within the first channel so that the armrest can rotate on the base with the pivot shaft. The limiting block can abut against the end of the first channel so that the armrest can be unfolded or folded in a specific position.

[0006] Furthermore, the foldable handrail includes a limiting sleeve, which includes a cylindrical sleeve wall. A cylindrical hollow structure on the inner side of the sleeve wall forms a connecting hole. A straight hollow structure is provided on the sleeve wall along the axial direction of the limiting sleeve to form a first channel. An arc-shaped hollow structure is provided on the sleeve wall along the circumferential direction of the limiting sleeve to form a second channel.

[0007] Furthermore, the base includes an upright column and a horizontal handrail perpendicularly connected to the upright column. The foldable handrail also includes a limiting sleeve. The limiting sleeve includes a first connecting column and a second connecting column perpendicularly connected to each other. The first connecting column can be fixedly connected to the upright column, and the second connecting column can be fixedly connected to the horizontal handrail. The connecting hole is a cylindrical hollow structure set at the corner of the connecting sleeve. A straight groove is provided on the outer side of the cylindrical hollow structure along the axial direction to form a first channel, and an arc-shaped groove is provided on the circumference of the cylindrical hollow structure to form a second channel.

[0008] Furthermore, the first and second connecting posts of the limiting sleeve are integrally formed.

[0009] Furthermore, the first connecting column and the second connecting column are both rectangular structures. The first connecting column can be inserted into the inside of the upright to be fixedly connected to the upright, and the second connecting column can be inserted into the inside of the horizontal handrail to be fixedly connected to the horizontal handrail.

[0010] Furthermore, one end of the second channel is positioned perpendicular to the axial direction of the column, so that the column can stop in a plane perpendicular to the plane containing the column and the horizontal handrail; the other end of the second channel is positioned parallel to the axial direction of the column, so that the column can stop in a position parallel to the axial direction of the column.

[0011] Furthermore, an elastic connecting block protruding from the shaft is provided on the side wall of the rotating shaft. The elastic connecting block can retract to the inside of the side wall of the rotating shaft under the action of external force. A positioning groove corresponding to the elastic connecting block is provided on the connecting hole so that the elastic connecting block can pop out and be inserted into the positioning groove.

[0012] Furthermore, the portion of the elastic connecting block protruding from the side wall of the shaft is a hemispherical structure, so that the elastic connecting block can retract into the side wall of the shaft under the action of parallel thrust.

[0013] Furthermore, at least two in-situ grooves are provided along the circumferential direction of the connecting hole, wherein at least one in-situ groove is aligned with the first channel along the axial direction of the rotating shaft, and at least one in-situ groove is aligned with the end of the second channel along the axial direction of the rotating shaft. Another aspect of this invention also provides a treadmill including the foldable handrails described above.

[0014] This utility model embodiment provides a foldable handrail that has at least the following advantages: 1. By setting a first channel and a second channel on the connecting hole, the limiting block of the handrail can slide along the first channel to allow the handrail to be inserted into or pulled out of the column, and slide along the second channel to allow the handrail to unfold or fold, so that the handrail can simultaneously achieve the functions of being detachable and foldable. 2. When the handrail is unfolded, the limiting block and the end of the second channel abut against each other, so that the end of the second channel provides support to the limiting block, enabling the handrail as a whole to withstand greater pressure and meet the load-bearing requirements of the treadmill handrail. 3. The fit between the elastic connecting block and the positioning groove can provide tactile and audible feedback to the user when the armrest is inserted and rotated to the correct position, preventing the armrest from being inserted or rotated too far and improving the user experience. 4. The limiting sleeve can be made by laser cutting and welded to the column. Its processing operation is simple and easy to implement, and its processing difficulty and manufacturing cost are both low. 5. The limiting sleeve may also include a first connecting post and a second connecting post, which facilitates connection with the uprights and horizontal handrails. The limiting sleeve can be an integral cast steel part. The first channel and the second channel are groove structures inside the connecting sleeve, which have stronger load-bearing capacity and lower processing difficulty and manufacturing cost. Attached Figure Description

[0015] Figure 1 This is a schematic diagram illustrating the structural relationship between the foldable handrail and the column in an embodiment of this utility model.

[0016] Figure 2 This is a schematic diagram of the foldable handrail and connecting sleeve according to an embodiment of the present invention.

[0017] Figure 3 This is a schematic diagram showing the limiting sleeve's limiting effect on the unfolded position of the handrail in an embodiment of this utility model.

[0018] Figure 4 This is a schematic diagram showing how the limiting sleeve limits the folding position of the handrail according to an embodiment of the present invention.

[0019] Figure 5 This is a schematic diagram of the connecting sleeve according to an embodiment of the present utility model.

[0020] Figure 6 This is a schematic diagram showing the connection relationship between the connecting sleeve, the upright, and the horizontal handrail in an embodiment of this utility model. Detailed Implementation

[0021] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0022] The foldable handrail 3 provided in this embodiment can be applied to treadmills or other exercise equipment that requires handrails 3. For ease of description, this utility model is illustrated using a treadmill as an example. Figure 1 As shown, a treadmill generally includes uprights 4 arranged opposite each other along the lateral direction of the treadmill running board. The ends of the uprights 4 away from the running board are connected by horizontal handrails 5, which can make the two uprights 4 more stable and provide users with a lateral handrail position.

[0023] Furthermore, the upright column 4 and the horizontal handrail 5 constitute the base of the foldable handrail 3 in this embodiment of the present invention, as shown in the reference. Figure 2 - Figure 4 In one embodiment of this utility model, a rotating shaft 1 is provided on the handrail 3. The rotating shaft 1 is perpendicular to the handrail 3 and can be inserted into the column 4 along the axial direction of the horizontal handrail 5. Specifically, a limiting block 11 protruding from the side wall of the rotating shaft 1 is provided on the rotating shaft 1, and the limiting block 11 is fixedly connected to the rotating shaft 1. A connecting hole is provided on the base. A first channel 21 and a second channel 22 are provided on the connecting hole. The first channel 21 extends along the axial direction of the connecting hole so that the rotating shaft 1 can be inserted into the connecting hole along the first channel 21. The second channel 22 is arranged along the circumferential direction of the connecting hole. The limiting block 11 can slide in the first channel 21 so that the handrail 3 can rotate on the base with the rotating shaft 1 and can abut against the end of the first channel 21 to limit the rotation position of the handrail 3.

[0024] In this embodiment of the invention, the outer diameter of the rotating shaft 1 matches the inner diameter of the connecting hole, allowing the rotating shaft 1 to be rotatably connected to the connecting hole. A limiting block 11 protruding from the side wall of the rotating shaft 1 is provided on the rotating shaft 1. During the insertion of the rotating shaft 1 into the connecting hole, the limiting block 11 slides in the first channel 21 until the rotating shaft 1 is fully inserted into the limiting hole. At this time, the limiting block 11 is positioned opposite the second channel 22, and as the rotating shaft 1 rotates in the connecting hole, the limiting block 11 slides in the second channel 22 until it abuts against the end of the second channel 22, thus positioning the handrail 3. This invention, through the cooperation of the first channel 21 and the second channel 22, allows the handrail 3 to be detachably connected to the base, and the limiting block 11 abuts against the end of the second channel 22 to limit the positioning of the handrail 3.

[0025] Furthermore, such as Figure 2 As shown, in a specific embodiment of this utility model, the limiting block 11 can be a separately machined stepped shaft. A connecting hole for the limiting block 11 is provided at the corresponding position of the rotating shaft 1. The stepped shaft is inserted into the connecting hole and tightened by a set screw. According to the test verification effect, if the strength is to be enhanced, welding can be done on the other side of the limiting block 11 to increase the limiting force effect, so that the handrail 3 can withstand greater pressure and meet the load-bearing requirements of the handrail 3.

[0026] Furthermore, in this embodiment of the present invention, the limiting block 11 can be a square structure or a shape such as... Figure 2 The columnar structure shown has its end of the second channel 22 matching the outer contour of the limiting block 11. When the limiting block 11 is a cylindrical structure, the end of the second channel 22 is as follows: Figure 3 The semi-circular arc structure shown can distribute the force on the limiting block 11, making the handrail 3 more load-bearing. To further improve the load-bearing capacity of the handrail 3, the limiting block 11 can be set to two or more, and the second channel 22 can also be set to two.

[0027] Furthermore, in this embodiment of the present invention, an elastic connecting block 12 protruding from the side wall of the rotating shaft 1 is provided. The elastic connecting block 12 can retract to the inner side of the side wall of the rotating shaft 1 under the action of external force. A positioning groove 23 corresponding to the elastic connecting block 12 is provided on the connecting hole so that the elastic connecting block 12 can pop out and be inserted into the positioning groove 23.

[0028] In this embodiment of the invention, the elastic connecting block 12 can be tightened using either a ball screw, a steel ball, a spring, and a set screw. Alternatively, the spring and steel ball can be inserted into the hole of the rotating shaft 1 by stamping, with only a portion of the steel ball protruding from the stamped end. It is sufficient to ensure that the portion of the elastic connecting block 12 protruding from the side wall of the rotating shaft 1 is hemispherical, allowing the elastic connecting block 12 to retract into the side wall of the rotating shaft 1 under parallel thrust, and to automatically pop out after the compression is released.

[0029] Furthermore, referring to Figure 2 - Figure 4 In this embodiment of the present invention, the in-place groove 23 includes at least two, at least one in-place groove 23 and the first channel 21 are arranged in the same straight line along the axial direction of the rotating shaft 1, and at least one in-place groove 23 and the end of the second channel 22 are arranged in the same straight line along the axial direction of the rotating shaft 1. That is, the in-place groove 23 can be used to detect whether the handrail 3 is inserted into place and whether the handrail 3 is rotated into place.

[0030] Furthermore, the elastic connecting block 12 retracts under lateral pressure during its insertion into the connecting hole. During the insertion or rotation of the handrail 3, a certain damping sensation is generated due to the pressure applied during installation. After the elastic connecting block 12 reaches any limiting groove, it extends, causing it to collide with the limiting sleeve 2 and produce a positioning sound. Therefore, in this embodiment, the elastic connecting block 12 can provide indication of the handrail 3's insertion and rotation, preventing user misoperation and further improving the user experience.

[0031] In this embodiment of the present invention, the elastic connecting block 12 can be set at any position on the side wall of the rotating shaft 1, as long as the position of the in-place groove 23 is opposite to that of the elastic connecting block 12. In a preferred embodiment of the present invention, the elastic connecting block 12 is set at the end of the rotating shaft 1 away from the handrail 3, and the in-place groove 23 is set at the end of the connecting hole away from the handrail 3. In this case, the in-place groove 23 can be a semi-circular structure that matches the elastic connecting block 12, which not only reduces the processing difficulty of the in-place groove 23, but also reduces the hollow space on the limiting sleeve 2, provides the overall rigidity of the limiting sleeve 2, and further improves the load-bearing capacity of the handrail 3.

[0032] Furthermore, in the embodiments of this utility model, such as Figure 3 As shown, one end of the second channel 22 is positioned perpendicular to the axial direction of the column 4, so that the column 4 can rest in a plane perpendicular to the column 4 and the horizontal handrail 5. When the foldable handrail 3 is installed on the treadmill, the handrail 3 is positioned on the side close to the treadmill running board, making it convenient for the user to hold the handrail 3.

[0033] Furthermore, in this embodiment of the invention, the other end of the second channel 22 is positioned parallel to the axial direction of the column 4, so that the column 4 can remain in a position parallel to the axial direction of the column 4. This end is preferably positioned as follows: Figure 3 Directly below the column 4, the handrail 3 is folded down for easy storage of the treadmill. In some alternative embodiments, this end can also be positioned directly above the column 4, as long as the column 4 and the handrail 3 are parallel to each other.

[0034] Furthermore, in this embodiment of the present invention, the first channel 21 is located at any position along the extension path of the second channel 22, as long as the first channel 21 and the second channel 22 can intersect. In a preferred embodiment, the second channel 22 is located parallel to the horizontal handrail 5, that is, at the relative position when the handrail 3 is unfolded. When located at this position, the handrail 3 can be smoothly inserted into the column 4 perpendicular to the outside of the treadmill. Rotating it inward by 180 degrees allows the handrail 3 to be rotated to the unfolded position, and rotating it downward by 90 degrees allows the handrail 3 to be folded. At this time, the central angle of the second channel 22 is 270 degrees, and there is sufficient rotation space for the unfolding and folding of the handrail 3, which is more in line with the user's operating habits.

[0035] Furthermore, in one embodiment of this utility model, the structure of the limiting sleeve 2 is as follows: Figures 2-4As shown, the limiting sleeve 2 is installed on the side of the column 4 near the horizontal handrail 5. The limiting sleeve 2 includes a cylindrical sleeve wall, and a cylindrical hollow structure on the inner side of the sleeve wall forms a connecting hole. A straight hollow structure is provided on the sleeve wall along the axial direction of the limiting sleeve 2 to form a first channel 21. An arc-shaped hollow structure is provided on the sleeve wall along the circumferential direction of the limiting sleeve 2 to form a second channel 22.

[0036] In this embodiment, the limiting sleeve 2 can be installed on the upright column 4, and the horizontal handrail 5 is installed above the limiting sleeve 2. Its structure is simple and does not require alteration of the existing structure of the treadmill upright column 4 and the horizontal handrail 5. Furthermore, the limiting sleeve 2 can be cut using a laser cutting machine, making the structural processing conventional and simple, and easy to implement.

[0037] Furthermore, in another embodiment of this utility model, the structure of the limiting sleeve 2 is as follows: Figures 5-6 As shown, the limiting sleeve 2 includes a first connecting post 24 and a second connecting post 25 that are perpendicularly connected to each other. The first connecting post 24 can be fixedly connected to the upright post 4, and the second connecting post 25 can be fixedly connected to the horizontal handrail 5. The connecting hole is a cylindrical hollow structure set at the corner of the limiting sleeve 2. Straight grooves are provided on the outside of the cylindrical hollow structure to form a first channel 21, and arc-shaped grooves are provided to form a second channel 22.

[0038] Furthermore, in this embodiment of the present invention, the first connecting post 24 and the second connecting post 25 are rectangular structures. The first connecting post 24 can be inserted into the inside of the upright post 4 to be fixedly connected to the upright post 4, and the second connecting post 25 can be inserted into the inside of the horizontal handrail 5 to be fixedly connected to the horizontal handrail 5.

[0039] Specifically, such as Figure 6 As shown, both the upright column 4 and the horizontal handrail 5 are square tubular structures with hollow interiors. The first connecting column 24 and the second connecting column 25 can be inserted into the interiors of the upright column 4 and the horizontal handrail 5. The first connecting column 24 and the second connecting column 25 are respectively provided with threaded connection holes 26, and the upright column 4 and the horizontal handrail 5 are provided with corresponding connection holes. After the first connecting column 24 and the second connecting column 25 are inserted into the interiors of the upright column 4 and the horizontal handrail 5, they are further tightened with screws. In this embodiment, the connecting sleeve is a one-piece cast steel component, assembled and locked using fasteners. This eliminates the need for welding during production assembly and avoids concerns about grinding of weld interference. This improvement allows for better control of precision, saves materials and production costs, and increases production efficiency. Simultaneously, the first channel 21 and the second channel 22 are grooved structures inside the connecting sleeve, providing stronger load-bearing capacity. The unfolded handrail 3 can withstand pressure exceeding 135 kg.

[0040] This embodiment of the utility model provides a foldable armrest 3 which has at least the following advantages: 1. By setting a first channel 21 and a second channel 22 on the connecting hole, the limiting block 11 of the handrail 3 can slide along the first channel 21 to allow the handrail 3 to be inserted into or pulled out of the column 4, and slide along the second channel 22 to allow the handrail 3 to be unfolded or folded, so that the handrail 3 can simultaneously achieve the functions of being detachable and foldable. 2. When the handrail 3 is unfolded, the limiting block 11 and the end of the second channel 22 abut against each other, so that the end of the second channel 22 provides support to the limiting block 11, so that the handrail 3 as a whole can withstand greater pressure and meet the load-bearing requirements of the treadmill handrail 3. 3. The cooperation between the elastic connecting block 12 and the positioning groove 23 can provide the user with a sense of touch and sound when the armrest 3 is inserted into the correct position and rotated to the correct position, so as to avoid the armrest 3 being inserted or rotated too far and improve the user experience. 4. The limiting sleeve 2 can be made by laser cutting and welded to the column 4. Its processing operation is simple and easy to implement, and its processing difficulty and manufacturing cost are both low. 5. The limiting sleeve 2 may also include a first connecting post 24 and a second connecting post 25, which facilitates connection with the upright post 4 and the horizontal handrail 5. The limiting sleeve 2 can be an integral cast steel part. The first channel 21 and the second channel 22 are groove structures inside the connecting sleeve, which have stronger bearing capacity and lower processing difficulty and manufacturing cost.

[0041] The present invention has been further described above with reference to specific embodiments. However, it should be understood that the specific description herein should not be construed as limiting the substance and scope of the present invention. Various modifications made to the above embodiments by those skilled in the art after reading this specification are all within the scope of protection of the present invention. The various specific technical features described in the above embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, the embodiments of the present invention will not further describe various possible combinations.

[0042] If the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

Claims

1. A foldable handrail, characterized in that, The device includes an armrest and a base. The armrest has a pivot shaft perpendicular to the armrest, and a limiting block protruding from the side wall of the pivot shaft is fixedly connected to the pivot shaft. The base has a connecting hole with a first channel and a second channel. The first channel extends along the axial direction of the connecting hole so that the limiting block can be inserted into the connecting hole. The second channel is arranged along the circumferential direction of the connecting hole, and the limiting block can slide within the first channel so that the armrest can rotate on the base with the pivot shaft. The limiting block can abut against the end of the first channel so that the armrest can be unfolded or folded in a specific position.

2. The foldable handrail of claim 1, wherein, The foldable handrail includes a limiting sleeve, which includes a cylindrical sleeve wall. A cylindrical hollow structure on the inner side of the sleeve wall forms a connecting hole. A straight hollow structure is provided on the sleeve wall along the axial direction of the limiting sleeve to form a first channel. An arc-shaped hollow structure is provided on the sleeve wall along the circumferential direction of the limiting sleeve to form a second channel.

3. The foldable handrail of claim 1, wherein, The base includes an upright column and a horizontal handrail connected perpendicularly to the upright column. The foldable handrail also includes a limiting sleeve. The limiting sleeve includes a first connecting column and a second connecting column that are perpendicularly connected to each other. The first connecting column can be fixedly connected to the upright column, and the second connecting column can be fixedly connected to the horizontal handrail. The connecting hole is a cylindrical hollow structure set at the corner of the connecting sleeve. A straight groove is provided on the outer side of the cylindrical hollow structure along the axial direction to form a first channel, and an arc-shaped groove is provided on the circumference of the cylindrical hollow structure to form a second channel.

4. The foldable handrail of claim 3, wherein, The first and second connecting posts of the limiting sleeve are integrally formed.

5. The foldable handrail of claim 3, wherein, The first connecting column and the second connecting column are both rectangular structures. The first connecting column can be inserted into the inside of the column to be fixedly connected to the column, and the second connecting column can be inserted into the inside of the horizontal handrail to be fixedly connected to the horizontal handrail.

6. The foldable armrest according to claim 2, characterized in that, One end of the second channel is positioned perpendicular to the axial direction of the column, so that the column can stop in a plane perpendicular to the plane containing the column and the horizontal handrail; the other end of the second channel is positioned parallel to the axial direction of the column, so that the column can stop in a position parallel to the axial direction of the column.

7. The foldable armrest according to claim 1, characterized in that, An elastic connecting block protruding from the shaft is provided on the side wall of the rotating shaft. The elastic connecting block can retract to the inside of the side wall of the rotating shaft under the action of external force. A positioning groove corresponding to the elastic connecting block is provided on the connecting hole so that the elastic connecting block can pop out and be inserted into the positioning groove.

8. The foldable armrest according to claim 7, characterized in that, The portion of the elastic connecting block that protrudes from the side wall of the shaft is a hemispherical structure, so that the elastic connecting block can retract into the side wall of the shaft under the action of parallel thrust.

9. The foldable armrest according to claim 8, characterized in that, At least two in-place grooves are provided along the circumferential direction of the connecting hole, wherein at least one in-place groove is arranged in a straight line with the first channel along the axial direction of the rotating shaft, and at least one in-place groove is arranged in a straight line with the end of the second channel along the axial direction of the rotating shaft.

10. A treadmill, characterized in that, Includes the foldable armrest as described in any one of claims 1-9.

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