Telescopic rotating armrest of electric wheelchair

Abstract

The utility model discloses a telescopic rotary armrest of an electric wheelchair, which comprises an armrest body, an elliptical tube support and a telescopic rod, the telescopic rod is arranged in the elliptical tube support in a penetrating manner, one end of the telescopic rod is hinged with the armrest body, and the other end of the telescopic rod is hinged with the elliptical tube support. The armrest further comprises a locking assembly used for locking the armrest body and the oval tube support. According to the utility model, the handrail main body with the triangular structure is connected with the elliptical tube bracket, so that the bearing capacity of the handrail is ensured, the handrail main body is connected through the internal telescopic rod, the lifting and overturning functions of the handrail main body are provided, the structure is effectively simplified, the operation complexity is reduced, and the jamming condition is reduced; and the locking assembly is arranged, so that the overall structural bearing strength of the armrest is further improved, and the boundary operation experience of the user on armrest state switching is provided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to electric wheelchair field relates to a kind of electric wheelchair telescopic rotary handrails. BACKGROUND

[0002] Electric wheelchair is more and more popular in action obstacle group and old group, in order to facilitate the convenience of user's up and down wheelchair, the handrail of electric wheelchair on both sides is usually designed into reversible form, is used as hand when being turned down, is turned on to facilitate up and down wheelchair, the movable structure of handrail in existing electric wheelchair product on market is more using four connecting rod design, although it guarantees the strength and stability of structure, but the overall structure of handrail occupies large space, and it is not beautiful, too many movable connection joints, easy to appear jam, it is not very convenient for action obstacle population to operate. INVENTION CONTENTS

[0003] The utility model discloses electric wheelchair telescopic rotary handrail to overcome the insufficient of prior art.

[0004] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme:

[0005] Electric wheelchair telescopic rotary handrail, including handrail body, oval tube support and telescopic rod, the telescopic rod is worn in the oval tube support, one end of the telescopic rod is formed hinged connection with the handrail body, still include the locking assembly for locking the handrail body with the oval tube support.

[0006] Further, the locking assembly includes a lock, the lock is respectively provided with cylindrical pin and lug, the handrail body is provided with the through hole for the cylindrical pin to wear, the oval tube support is opened and is provided with the locking hole for the lug to wear.

[0007] Further, the locking assembly further includes an unlocking button, the unlocking button and the lock are respectively arranged at the axial two ends of the through hole, the unlocking button is fixedly connected with the tail end of the cylindrical pin, the outer periphery of the cylindrical pin is provided with spring, and the two ends of the spring are connected with the unlocking button and the through hole respectively.

[0008] Further, the oval tube support is provided with a locking member, the locking member is threadedly connected with the oval tube support, one end of the locking member extends into the oval tube support and abuts against the telescopic rod.

[0009] Further, the telescopic rod is provided with a strip-shaped groove in the length direction, and one end of the locking member abuts against the inner wall of the strip-shaped groove.

[0010] Further, the handrail body includes a lower shell, an embedded framework, an upper cover and a side cover, and a wire slot is arranged in the lower shell.

[0011] In summary, the utility model has the advantages that:

[0012] The utility model adopts the form that the triangular structure handrail main body is connected with the oval pipe support, ensures the bearing capacity of the handrail, and forms the connection through the built -in telescopic link and handrail main body, provides the lifting and overturning function of the handrail main body, effectively simplifies the structure, reduces the operation complexity, reduces the jam situation, and the setting of locking assembly further improves the structure bearing strength of the whole handrail, and provides the boundary operation experience of user to the handrail state switching. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the structural schematic diagram of the utility model.

[0014] Figure 2 It is the sectional structure schematic diagram in Figure 1

[0015] Figure 3 It is the explosion structure schematic diagram in Figure 1

[0016] Figure 4 It is the structure schematic diagram of the lock catch.

[0017] The identification in the drawing: 1, handrail main body;11, lower shell;12, embedded framework;13, upper cover;14, side cover;111, installation groove;2, oval pipe support;21, locking hole;22, locking piece;3, telescopic link;31, strip-shaped recess;41, lock catch;42, unlocking button;43, columnar pin;44, protruding block. DETAILED DESCRIPTION

[0018] The implementation mode of the utility model will be explained below through specific examples, and the person skilled in the art can easily understand other advantages and effects of the utility model from the content disclosed in the specification. The utility model can also be implemented or applied through another different specific implementation mode, and each detail in the specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the utility model. It should be noted that the following examples and features in the examples can be combined with each other without conflict.

[0019] It should be noted that the drawings provided in the following examples only illustrate the basic concept of the utility model in a schematic manner, and only the components related to the utility model are shown in the drawings, not the number, shape and size of the components when actually implemented. The shape, number and proportion of each component can be changed arbitrarily when actually implemented, and the component layout pattern can also be more complex.

[0020] ​​The all directionality indications (such as up, down, left, right, front, back, transverse, longitudinal, and the like) in the embodiments of the utility model are only used for explaining the relative position relationship, movement condition and the like between the components in a certain specific posture, and if the specific posture is changed, the directionality indications are also changed accordingly.

[0021] Due to installation errors and the like, the parallel relationship in the embodiments of the utility model may be actually an approximate parallel relationship, and the perpendicular relationship may be actually an approximate perpendicular relationship.

[0022] A kind of electric wheelchair telescopic rotary handrail, including the handrail structure being set to the single side or both sides of electric wheelchair, the height adjustment of handrail structure and the turnover function of up and down can be realized.

[0023] Referring to Figure 1 And Figure 2 , handrail structure includes oval tube support 2, handrail main body 1, telescopic rod 3, the bottom end of oval tube is connected with the frame of electric wheelchair, oval tube support 2 is hollow structure, and opening is formed at top, so that telescopic rod 3 can be arranged in oval tube support 2, telescopic rod 3 and oval tube support 2 can be relatively length direction telescopic movement, the top of telescopic rod 3 is connected with handrail main body 1, and handrail main body 1 is supported and telescopic action by telescopic rod 3 and oval tube support 2.

[0024] Specifically, the top of telescopic rod 3 is provided with first mounting hole, the bottom of handrail main body 1 is provided with second mounting hole, and the connection of telescopic rod 3 and handrail main body 1 is realized by shaft pin coaxial arrangement in first mounting hole and second mounting hole, and the relative rotation between handrail main body 1 and telescopic rod 3 is supported.

[0025] Further, by setting locking assembly, telescopic rod 3 and handrail main body 1 are locked and positioned at set angle position, referring to Figure 3 And Figure 4 , locking assembly includes lock 41, one end of lock 41 is provided with cylindrical pin 43, the bottom of handrail main body 1 is provided with through hole for arranging cylindrical pin 43, through hole forms two end openings on handrail main body 1, cylindrical pin 43 of lock 41 is inserted along one side opening, and unlocking button 42 is also arranged at the other side opening, unlocking button 42 is fixedly connected with cylindrical pin 43 in through hole, the outer diameter of unlocking button 42 and the outer diameter of lock 41 are all greater than the opening diameter of through hole, so that cylindrical pin 43 is kept in through hole, and the length of cylindrical pin 43 is greater than the depth of through hole, so that lock 41 can move in set range along the axial direction of through hole.

[0026] The outer periphery of cylindrical pin 43 is also sleeved with spring, and the two ends of spring are respectively abutted on unlocking button 42 and the inner wall of through hole, so as to provide axial elastic force for unlocking button 42, and lock 41 is maintained at set position under the action of no other external force, specifically, the locking position.

[0027] The locking catch 41 is further provided with a protrusion 44, and the oval tube support 2 is provided with a locking hole 21 for the protrusion 44 to pass in. When the spring maintains the locking catch 41 in the locking position, the protrusion 44 is located in the locking hole 21, so that the positioning and locking between the handrail body 1 and the oval tube support 2 is achieved by the locking catch 41. At this time, the user cannot lift the handrail body 1, nor can he rotate it. The handrail body 1 is in a horizontal posture at this position, which is used for supporting the user's hand.

[0028] When the user needs to operate the handrail body 1 to lift or rotate, the user presses the unlocking button 42, and the axial action of the locking catch 41 makes the protrusion 44 outwardly disengage from the locking hole 21, so that the handrail body 1 and the oval tube support 2 are in a disengaged state at this time. The user can choose to pull out the telescopic rod 3 to achieve the lifting effect, or can choose to rotate the handrail body 1 relative to the telescopic rod 3 to achieve the effect of turning the handrail body 1 to be straight.

[0029] Preferably, the bottom of the handrail body 1 is formed in a triangular structure, and an installation slot 111 is provided in the inside for the top end of the telescopic rod 3 to be inserted. The second mounting hole and the through hole are both provided through the two side walls of the installation slot 111. The installation slot 111 is also provided in a triangular structure, so that the adjacent two angle edges of the installation slot 111 limit the relative rotation angle of the telescopic rod 3, and limit the rotation angle range of the handrail body 1.

[0030] In order to improve the stability and stop function of the telescopic rod 3 relative to the oval tube support 2 when it is telescoped, a locking piece 22 is further provided on one side of the oval tube support 2. The locking piece 22 is provided through the outer wall of the oval tube support 2 and extends into the oval tube support 2. The locking piece 22 is threadedly connected with the oval tube support 2, and the distal end abuts against the outer wall of the telescopic rod 3. By adjusting the screwing in and out of the locking piece 22 into the oval tube support 2, the force exerted by the distal end of the locking piece 22 on the telescopic rod 3 is adjusted, so as to form a set of adjustable resistance to the telescoping of the telescopic rod 3.

[0031] Further, a strip-shaped groove 31 of a set length is provided on the side wall of the telescopic rod 3 and recessed inward in the length direction. The distal end of the locking piece 22 extends into the groove and abuts against the inner wall of the groove. When the telescopic rod 3 telescopes, the two side walls of the groove in the length direction will interfere with the locking piece 22, so as to ensure that the telescopic rod 3 is maintained in the oval tube support 2 and will not be excessively pulled out or excessively deepened.

[0032] The handrail main body 1 comprises a lower shell 11, an embedded skeleton 12, an upper cover 13 and a side cover 14, the embedded skeleton 12 is arranged between the upper cover 13 and the lower shell 11, a controller is arranged on the embedded skeleton 12, the controller can be extended and retracted relative to the embedded skeleton 12, so that the user can draw out when needing to use, and retract to hide when not using, a wire slot is arranged in the lower shell 11, the upper cover 13 is opened to facilitate the arrangement of internal lines, the side cover 14 is arranged at the side of the upper cover 13 and the lower shell 11, and is connected to the upper cover 13 and the lower shell 11 to close the inside and hide the wire harness.

[0033] Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the protection scope of the present application.

Claims

1. An electrically powered wheelchair telescopic rotary armrest, characterized in that, The handrail body, the elliptical tube support (2) and the telescopic rod (3) are included, the telescopic rod (3) is arranged in the elliptical tube support (2), one end of the telescopic rod (3) is hinged with the handrail body, and the locking assembly for locking the handrail body and the elliptical tube support (2) is further included.

2. The electric wheelchair according to claim 1, wherein The locking assembly includes a lock (41), the lock (41) is provided with a cylindrical pin (43) and a protrusion (44) respectively, the handrail body is provided with a through hole for the cylindrical pin (43) to pass through, and the elliptical tube support (2) is provided with a locking hole (21) for the protrusion (44) to pass through.

3. The electric wheelchair according to claim 2, wherein The locking assembly further includes an unlocking button (42), the unlocking button (42) and the lock (41) are arranged at the axial ends of the through hole respectively, the unlocking button (42) is fixedly connected with the end of the cylindrical pin (43), the cylindrical pin (43) is provided with a spring, and the two ends of the spring are connected with the unlocking button (42) and the through hole respectively.

4. The electric wheelchair according to claim 1, wherein, The elliptical tube support (2) is provided with a locking piece (22), the locking piece (22) is threadedly connected with the elliptical tube support (2), one end of the locking piece (22) extends into the elliptical tube support (2) and abuts against the telescopic rod (3).

5. The electrically powered wheelchair retractable rotary armrest according to claim 4, wherein, The telescopic rod (3) is provided with a strip-shaped groove (31) in the length direction, and one end of the locking piece (22) abuts against the inner wall of the strip-shaped groove (31).

6. The electric wheelchair according to claim 1, wherein The handrail body includes a lower shell (11), an embedded framework (12), an upper cover (13) and a side cover (14), and the lower shell (11) is provided with a wire slot.

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