CN214129114U - Reinforced wheelchair front fork with damping function - Google Patents

Abstract

A reinforced wheelchair front fork with a shock absorption function comprises a front fork body, a shock absorption column, a connecting block and a connecting rod, wherein the front fork body is movably connected with the connecting block; the connecting block is fixedly connected with the connecting rod, the front surface of the front fork body is in a triangular shape with a gap, and the upper left corner of the front fork body extends to form a fork shoulder; the upper end surface of the front fork body is provided with a U-shaped concave notch, and the right side end surface of the U-shaped concave notch is provided with a first inner hole; one end of the shock absorption column extends into the first inner hole; a first fixed seat is arranged in the first inner hole and used for fixing the shock absorption column; a second inner hole is formed in the end face of the right side of the connecting block, and the other end of the shock absorption column extends into the second inner hole; the second is downthehole to be equipped with the second fixing base for fixed shock attenuation post, elastic deformation can take place along the axial for the shock attenuation post, can compress in the axial of its slope, and the external force of neutralization all directions reaches fine shock attenuation effect, makes the wheelchair user not feel jolt, uses comfortablely.

Description

Reinforced wheelchair front fork with damping function

Technical Field

The utility model belongs to the technical field of the wheelchair, specifically, relate to a strenghthened type wheelchair front fork with shock-absorbing function.

Background

Although the front wheel of the wheelchair is small, the wheelchair plays an extremely important role, and the design and manufacture of the front fork are not emphasized in the common wheelchair, so that the performance of the whole wheelchair is poor, such as inflexible steering, poor shock absorption effect and the like. A good wheelchair must have a good front fork.

However, since the front wheel is small, the force is less, and the pressure from above is small, the vibration is obvious as long as the front wheel is slightly shaken, and the user feels uncomfortable when encountering uneven ground during use due to large jolt. The wheelchair is a product which is convenient for patients and people with disabled lower limbs and healthy brains and upper limbs to walk and move, so that the pain of the users who just complete the operation, have wounds on the bodies or have bad hearts is aggravated by jolts generated when the wheelchair walks on bumpy roads and downstairs.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: the utility model aims at providing a strenghthened type wheelchair front fork with shock-absorbing function, the shock attenuation is effectual, and simple structure is firm, and use comfort is good.

The technical scheme is as follows: the utility model provides a reinforced wheelchair front fork with damping function, which is connected to the front wheel of a wheelchair and comprises a front fork body, a damping column, a connecting block and a connecting rod, wherein the front fork body comprises a left fork and a right fork which are integrally formed; the front fork body is movably connected with the connecting block; the connecting block is fixedly connected with the connecting rod, the front surface of the front fork body is in a triangular shape with a gap, and the upper left corner of the front fork body extends to form a fork shoulder; the upper end surface of the front fork body is provided with a U-shaped concave notch, the left side end surface of the U-shaped concave notch is a fork shoulder, and the right side end surface of the U-shaped concave notch is provided with a first inner hole; one end of the shock absorption column extends into the first inner hole; a first fixed seat is arranged in the first inner hole and used for fixing the shock absorption column; a second inner hole is formed in the position, opposite to the first inner hole, of the right end face of the connecting block, and the other end of the shock absorption column extends into the second inner hole; the second is downthehole to be equipped with the second fixing base for it is fixed the shock attenuation post, elastic deformation can take place along the axial for the shock attenuation post, can compress in the axial of its slope, and the external force of neutralization all directions reaches fine shock attenuation effect, makes the wheelchair user not feel jolt, uses comfortablely.

Further, in the above structure, a fork body base angle is arranged below the front fork body, and a first shaft hole is formed at an inner angle of the fork body base angle and used for connecting the front wheel to the front fork body.

Furthermore, in the above structure, the inner angle of the bottom corner of the fork body isθ1=45 ° or 30 °, and upper right corner of front fork bodyθ2 are equal in angle.

Furthermore, in the structure, the fork shoulder comprises a left fork shoulder and a right fork shoulder, and the left fork shoulder and the right fork shoulder are both provided with second shaft holes.

Furthermore, in the above structure, the upper end of the connecting block is trapezoidal, the lower end of the connecting block extends to form a semicircular convex portion, the semicircular convex portion is arranged between the left fork shoulder and the right fork shoulder and is connected with the left fork shoulder and the right fork shoulder through bolts and nuts (the bolts and the nuts are not shown in the figure), the semicircular convex portion is provided with a through hole, and the fork shoulder and the semicircular convex portion penetrate through the second shaft hole and the through hole through bolts to be connected.

Furthermore, in the above structure, the upper end of the connecting rod is mounted on the bracket of the wheelchair through a bearing (the bearing and the wheelchair bracket are not shown in the figure), the lower end of the connecting rod is provided with an external thread, the upper end surface of the connecting block is provided with a threaded hole, and the lower end of the connecting rod extends into the threaded hole to be in threaded connection with the connecting block.

Further, in the above structure, the shock absorbing column is made of an elastomer structure made of polyurethane engineering materials.

Preferably, in the above structure, an angle between an axial direction of the shock absorbing column and a right side end face of the U-shaped concave notch is 90 °.

Further, in the above structure, the shock absorbing column is connected with the first fixing seat in a clamping manner, and the shock absorbing column is connected with the second fixing seat in a clamping manner; the shock absorber comprises a shock absorption column and is characterized in that clamping grooves are formed in the centers of the axial end faces of two ends of the shock absorption column, clamping protrusions are arranged on a first fixing seat, clamping protrusions are arranged on a second fixing seat, and the clamping grooves are matched with the clamping protrusions and the clamping protrusions.

Above-mentioned technical scheme can find out, the utility model discloses following beneficial effect has: strenghthened type wheelchair front fork with shock-absorbing function, by the triangle-shaped firm structure of connecting block, shock attenuation post and front fork body, consequently have high stability, the structure is very firm, not fragile, easily manufacturing and assembly, excellent in use effect. The shock absorption column prepared from the polyurethane engineering material has certain hardness, can elastically deform, can eliminate part of transmitted vibration force, and cannot rust, so that the service life and the attractiveness are not influenced. When the wheelchair meets an obstacle or a hollow road surface, external force generated from all directions is buffered and neutralized by the inclined direction of the shock absorption columns, the phenomenon that the traditional shock absorption mechanism can only absorb vibration in the vertical direction but can not absorb vibration in the horizontal direction is avoided, and therefore the wheelchair can adapt to various complex road conditions, a good buffering and shock absorption effect is achieved, and the riding comfort of the wheelchair is greatly improved.

Drawings

FIG. 1 is a front view schematically illustrating the reinforced wheelchair front fork with shock absorption function of the present invention;

fig. 2 is a schematic perspective view of the front fork body 1 of the present invention;

fig. 3 is a left side view schematic structural diagram of the front fork body 1 of the present invention;

fig. 4 is a schematic front view of the front fork body 1 of the present invention;

fig. 5 is a schematic perspective view of the connection block 3 of the present invention;

fig. 6 is a schematic front view of the connecting block 3 according to the present invention;

fig. 7 is a right side view structure diagram of the connecting block 3 of the present invention.

In the figure: 1 front fork body, 10: u-shaped indent breach, 11 left fork, 12 right fork, 13 fork body base angles, primary shaft hole 130, 14 fork shoulders, 140 secondary shaft hole, 141 left fork shoulder, 142 right fork shoulder, 15 first hole, 17 first fixing base, 19 first joint arch, 2 shock-absorbing column, 3 connecting block, 31 semi-circular convex part, 33 second hole, 34 second fixing base, 35 screw hole, 36 second joint arch, 39 through-holes, 4 connecting rods, 5 front wheels.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Example 1

The reinforced wheelchair front fork with the shock absorption function shown in fig. 1-7 is connected to a front wheel 5 of a wheelchair, and comprises a front fork body 1, a shock absorption column 2, a connecting block 3 and a connecting rod 4, wherein the front fork body 1 comprises a left fork 11 and a right fork 12, and the left fork 11 and the right fork 12 are integrally formed; the front fork body 1 is movably connected with the connecting block 3; the connecting block 3 is fixedly connected with the connecting rod 4, the front surface of the front fork body 1 is in a triangular shape with a gap, and the upper left corner of the front fork body 1 extends to form a fork shoulder 14; the upper end surface of the front fork body 1 is provided with a U-shaped concave notch 10, the left end surface of the U-shaped concave notch 10 is a fork shoulder 14, and the right end surface of the U-shaped concave notch 10 is provided with a first inner hole 15; one end of the shock absorption column 2 extends into the first inner hole 15; a first fixed seat 17 is arranged in the first inner hole 15 and used for fixing the shock absorption column 2; a second inner hole 33 is formed in the right end face of the connecting block 3 and opposite to the first inner hole, and the other end of the shock absorption column 2 extends into the second inner hole 33; be equipped with second fixing base 34 in the second hole 33 for it is fixed shock attenuation post 2, shock attenuation post 2 can take place elastic deformation along the axial, can compress in the axial of its slope, and the external force of neutralization all directions reaches fine shock attenuation effect, makes the wheelchair user not feel jolt, uses comfortablely.

In the above structure, the fork body bottom corner 13 is arranged below the front fork body 1, and the inner corner of the fork body bottom corner 13 is provided with the first shaft hole 130 for connecting the front wheel 5 to the front fork body 1.

In the above structure, an inner angle of the fork bottom corner 13 is θ 1=45 ° or 30 °, and is equal to an angle of the upper right corner θ 2 of the front fork body 1.

In the above structure, the fork shoulder 14 is provided with a second shaft hole 140; the yoke shoulder 14 includes a left yoke shoulder 141 and a right yoke shoulder 142.

In the above structure, the upper end of the connecting block 3 is trapezoidal, the lower end of the connecting block 3 extends to form a semicircular protrusion 31, the semicircular protrusion 31 is disposed between the left fork shoulder 141 and the right fork shoulder 142 and is connected by a bolt and a nut (the bolt and the nut are not shown in the figure), the semicircular protrusion 31 is provided with a through hole 39, and the fork shoulder 14 and the semicircular protrusion 31 are connected by a bolt passing through the second shaft hole 140 and the through hole 39.

In the structure, the upper end of the connecting rod 4 is arranged on the bracket of the wheelchair through a bearing, the bearing and the wheelchair bracket are not shown in the figure, the lower end of the connecting rod 4 is provided with an external thread, the upper end face of the connecting block 3 is provided with a threaded hole 35, and the lower end of the connecting rod 4 extends into the threaded hole 35 to be in threaded connection with the connecting block 3.

In the structure, the shock absorption column 2 is of an elastomer structure made of polyurethane engineering materials.

In the above structure, an angle between the axial direction of the shock absorbing column 2 and the right side end face of the U-shaped concave notch 10 is 90 °.

In the structure, the shock-absorbing column 2 is connected with the first fixed seat 17 in a clamping manner, and the shock-absorbing column 2 is connected with the second fixed seat 34 in a clamping manner; the axial terminal surface center of the both ends perpendicular to of shock attenuation post 2 all is provided with joint recess 23, be equipped with on the first fixing base 17, be equipped with on the second fixing base 34, joint recess 23 with the protruding 19 of first joint and the protruding 36 looks adaptations of second joint.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications can be made without departing from the principles of the present invention, and these modifications should also be regarded as the protection scope of the present invention.

Claims (9)

1. The utility model provides a strenghthened type wheelchair front fork with shock-absorbing function, the wheelchair front fork is connected on front wheel (5) of wheelchair, its characterized in that: the wheelchair front fork comprises a front fork body (1), a shock absorption column (2), a connecting block (3) and a connecting rod (4), wherein the front fork body (1) comprises a left fork (11) and a right fork (12), and the left fork (11) and the right fork (12) are integrally formed; the front fork body (1) is connected with the connecting block (3) through a bolt; the connecting block (3) is fixedly connected with the connecting rod (4), the front face of the front fork body (1) is in a triangular shape with a gap, and the upper left corner of the front fork body (1) extends to form a fork shoulder (14); the upper end face of the front fork body (1) is provided with a U-shaped concave notch (10), the left side end face of the U-shaped concave notch (10) is provided with a fork shoulder (14), and the right side end face of the U-shaped concave notch (10) is provided with a first inner hole (15); one end of the shock absorption column (2) extends into the first inner hole (15); a second inner hole (33) is formed in the position, opposite to the first inner hole, of the right end face of the connecting block (3), and the other end of the shock absorption column (2) extends into the second inner hole (33); the shock absorption column (2) can be elastically deformed along the axial direction.

2. The reinforced wheelchair front fork with shock absorption function as claimed in claim 1, wherein: the fork body base angle (13) is arranged below the front fork body (1), and a first shaft hole (130) is formed in the inner angle of the fork body base angle (13) and used for connecting a front wheel (5) to the front fork body (1).

3. The reinforced wheelchair front fork with shock absorption function as claimed in claim 2, wherein: an inner angle theta 1 of the fork body bottom angle (13) is equal to an angle theta 2 of the upper right corner of the front fork body (1), and theta 1= theta 2=45 degrees.

4. The reinforced wheelchair front fork with shock absorption function as claimed in claim 1, wherein: the fork shoulder (14) comprises a left fork shoulder (141) and a right fork shoulder (142), and second shaft holes (140) are formed in the left fork shoulder (141) and the right fork shoulder (142).

5. The reinforced wheelchair front fork with shock absorption function as claimed in claim 4, wherein: the upper end of the connecting block (3) is trapezoidal, the lower end of the connecting block (3) extends to form a semicircular convex part (31), the semicircular convex part (31) is arranged between the left fork shoulder (141) and the right fork shoulder (142) and is connected through a bolt and a nut, a through hole (39) is formed in the semicircular convex part (31), and the fork shoulder (14) and the semicircular convex part (31) penetrate through the second shaft hole (140) and are connected with the through hole (39) through a bolt.

6. The reinforced wheelchair front fork with shock absorption function as claimed in claim 1, wherein: the upper end of connecting rod (4) is installed on the support of wheelchair through the bearing, the lower extreme of connecting rod (4) is equipped with the external screw thread, be equipped with screw hole (35) on the up end of connecting block (3), the lower extreme of connecting rod (4) stretches into screw hole (35) and connecting block (3) threaded connection.

7. The reinforced wheelchair front fork with shock absorption function as claimed in claim 1, wherein: the shock absorption column (2) is of an elastomer structure made of polyurethane engineering materials.

8. The reinforced wheelchair front fork with shock absorption function as claimed in claim 1, wherein: the angle between the axial direction of the shock absorption column (2) and the right side end face of the U-shaped concave notch (10) is 90 degrees.

9. The reinforced wheelchair front fork with shock absorption function as claimed in claim 1, wherein: be equipped with first fixing base (17) in first hole (15), be equipped with second fixing base (34) in second hole (33), shock attenuation post (2) are connected with first fixing base (17) block, shock attenuation post (2) are connected with second fixing base (34) block.

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