CN110464605A - Walk helper - Google Patents

Abstract

A kind of walk helper includes side arm, two side frames and two folding mechanisms.The side arm includes two casings.Each casing has locating slot.The locating slot extends around the circumference of corresponding casing, and with expansion groove portion separately and folds groove portion.The side frame is inverted U shape, and is rotatably arranged in the casing of the side arm, and can change between an expanded position and a stowed position.The folding mechanism is arranged in the side frame, and pressing piece, the connection pressing piece including the prominent side frame in part fold item, and are laterally installed in the bolt for folding item.The bolt one end is pierced by the side frame and is movably disposed at the locating slot of the side arm.The bolt by the pressing piece drive and be selectively sticked in the locating slot fold groove portion or expansion groove portion, to position the side frame.

Description

Walker

technical field

The invention relates to a walking aid, in particular to a foldable walking aid.

Background technique

Referring to Fig. 1 and Fig. 2, a kind of existing walking aid 1, as described in the Chinese patent case CN2796692Y, it comprises an H-shaped front frame 11, two side frames 12 in an inverted U shape, and two folding devices 13. The front frame 11 includes two sleeves 111 located on two opposite sides. One side of each side frame 12 is rotatably disposed on the respective bushing 111 . Each side frame 12 has a holding section 121 for people to hold, and a support rod 122 extending downward from the holding section 121 and inserted into the respective bushing 111 . The folding devices 13 are respectively disposed on the sleeves 111 of the front frame 11 and connected to the side frames 12 respectively.

Each folding device 13 includes a fixing piece 14 , a base 15 , a pin 16 , a spring 17 , and a handle 18 . The fixing pieces 14 are arranged on the outsides of the respective sleeves 111 and have a sliding slot 141 . The chute 141 has an arc-shaped groove portion 142 and a circular groove portion 143 . The radial width of the circular groove portion 143 is greater than the radial width of the arc-shaped groove portion 142 . The seat body 15 is mounted on each support rod 122 by a fixing rod 101 , and has a sleeve hole 151 for inserting the respective support rod 122 , and a setting hole 152 penetrating up and down. The pin 16 is installed in the setting hole 152 and sleeved by the spring 17, and has a head 161 with an outer diameter larger than the arc groove 142, and a head 161 with an outer diameter smaller than the arc groove 142. The shaft is 162. The wrench 18 is pivotally mounted on each support rod 122 through a pivot 102, and has an abutment section 181 pressed against the bolt 16, a sleeve section 182 connecting the abutment section, and a The pulling section 183 extends outward from the sleeve section 182 . The sleeve section 182 has a sleeve hole 184 for mounting the respective supporting rod 122 , and two pivot holes 185 on two opposite sides for insertion of the pivot shaft 102 . The wrenching section 183 of the wrench 18 extends below the holding section 121 for the user to wriggle. When the wrenching section 183 of the wrench 18 is pulled upward, the wrench 18 will swing around the pivot 102 , and the abutting section 181 will move down and push the latch 16 , make the head 161 of the bolt 16 leave the circular groove portion 143 of the chute 141, at this time the shaft 162 of the bolt 16 can move in the arc groove portion 142 of the chute 141, this At this time, the side frame 12 can be rotated relative to the front frame 11 to be folded.

The wrenching section 183 of the wrench 18 is located below the holding section 121 of the side frame 12. Although it is convenient for the user to pull, it takes up space for the user to hold. When using the walker 1 , the trigger 18 often hits the user's hand, so there is also a need for improvement.

Referring to FIG. 3 , another existing folding device for walking aids, as described in US Pat. No. 6,886,575 , is roughly similar in structure to the aforementioned Chinese Patent No. CN2796692Y, except that the folding device also includes a connecting rod 19 . The two opposite ends of the connecting rod 19 are respectively connected to the top of the latch 16 and the center of the handle 18, so that when the handle 18 is pulled, the latch 16 will be held by the connecting rod. 19 is driven to move upwards, and then disengages from the circular groove portion 143 of the fixing piece 14 to unlock. This structure also has the problem of occupying the space held by the user, which needs to be further improved.

Contents of the invention

The purpose of the present invention is to provide a walking aid that does not occupy a space for the user to hold.

The walking aid of the present invention comprises a front frame, two side frames, and two folding devices.

The front frame includes two sleeves. Each sleeve has a positioning groove, and the positioning groove extends around the circumference of the corresponding sleeve, and has a spaced-apart expansion groove portion and a retraction groove portion.

The side frame is in an inverted U shape and includes a front pole section, a rear pole section, and an adapter seat. The front rod section is rotatably arranged on the sleeve of the front frame. The adapter seat is connected to the front pole section and has an accommodating space. The side frame can be changed between an expanded position and a retracted position relative to the front frame. In the deployed position, the rear mast section is spaced away from the front frame. In the stowed position, the rear pole section is adjacent to the front frame.

The retracting device is arranged in the accommodating space. Each retractable device includes a pressing piece, a retractable strip, and a latch. The pressing part protrudes from the side frame so as to be operated by the user. The retractable strip is connected to the pressing piece and is located on the front pole section of the side frame. The bolt is fixed laterally on the retractable bar, and one end passes through the front bar section of the side frame and is movably arranged in the positioning slot of the front frame. Driven by the pressing member, the pin is selectively engaged with the retracting groove portion or the unfolding groove portion of the positioning groove, so as to position the side frame. When in the unfolded position, the latch is engaged with the unfolding groove of the front frame. When in the stowed position, the latch is engaged with the stowed groove of the front frame.

The walking aid of the present invention also includes a connecting device, the connecting device includes a limit rod pierced through the side frame, the retracting bar of the retracting device has a guide groove extending up and down, and the guide The slot is inserted by the limit rod.

In the walking aid of the present invention, the pressing part of the folding device has a pivoting part located at the middle section and a connecting part located at the front section, the pivoting part is pivotally connected with the side frame, and the connecting part It is pivotally connected with the folding bar.

The walking aid of the present invention further includes an elastic member arranged between the retractable device and the side frame, the elastic member always provides an elastic biasing force to drive the latch to engage with the front frame The expansion groove portion or the retraction groove portion.

In the walking aid of the present invention, the elastic member adopts a compression spring and surrounds the retractable strip provided on the retractable device, and one end is fixed on the side frame, and the other end leans against the latch.

In the walking aid of the present invention, the sleeve of the front frame has a concave surface formed on the top surface, and the concave surface is depressed to define the positioning groove.

In the walking aid of the present invention, the front bar section of the side frame has a sliding groove extending up and down, and the sliding groove is provided for the latch of the folding device to be slidably arranged.

In the walking aid of the present invention, the side frame further includes an adapter seat arranged on the front pole section, the adapter seat has an accommodating space and an opening communicating with the accommodating space and the outside world, the The opening faces upward, the retracting device is disposed in the accommodating space of the adapter seat, and the pressing member is partially exposed to the opening.

In the walking aid of the present invention, the front frame further includes sleeves, and the sleeves are respectively located on two opposite sides. The walking aid also includes side frames and a retracting device, and the front rod sections of the side frames are respectively rotatable. are arranged on the sleeve, and the retracting devices are respectively arranged on the side frames.

The beneficial effect of the present invention is that: the folding device is arranged in the accommodating space of the side frame, and does not occupy the space held by the user's four fingers, thereby avoiding hitting the user's hand.

Description of drawings

Other features and effects of the present invention will be clearly presented in the implementation manner with reference to the drawings, wherein:

Figure 1 is a partial perspective exploded view illustrating a conventional walker;

Fig. 2 is an incomplete partial perspective exploded view illustrating a folding device of the conventional walker;

Figure 3 is an incomplete perspective exploded view illustrating another existing walking aid folding mechanism;

Figure 4 is a perspective view illustrating an embodiment of the walking aid of the present invention;

Fig. 5 is a partial perspective exploded view of the embodiment, illustrating a collapsible device;

Figure 6 is a partial cross-sectional view of the embodiment, illustrating the collapsible means;

Figure 7 is a partial perspective cutaway view illustrating the side frame of the embodiment in a deployed position; and

Figure 8 is a partial cross-sectional view illustrating the side frame of the embodiment in a stowed position.

Detailed ways

Referring to FIG. 4 , FIG. 5 and FIG. 6 , the embodiment of the walking aid of the present invention includes a front frame 2 , two side frames 3 , two folding devices 4 , two elastic members 5 , and a connecting device 6 .

The front frame 2 includes a cross bar 21 substantially extending transversely, and two sleeves 22 respectively disposed on two opposite ends of the cross bar 21 . Each sleeve 22 is substantially upright, and has two concave portions 221 formed on two opposite sides of the top surface, and two positioning grooves 222 respectively defined by the concave portions 221 . The extending direction of each positioning groove 222 substantially extends around the circumference of the corresponding sleeve 22 , and has an expanding groove portion 223 and a retracting groove portion 224 spaced apart from each other.

The side frames 3 are all in an inverted U shape. Each side frame 3 includes a front pole section 31 , a pole grip section 32 , a rear pole section 33 , and an adapter seat 34 . The front rod sections 31 are rotatably arranged on the respective bushings 22 of the front frame 2 and have two sliding grooves 311 located on two opposite sides and extending up and down. One end of the handle section 32 is adjacent to the upper end of the front section 31 , and the other end is connected to the upper end of the rear section 33 . The adapter seat 34 is substantially L-shaped, and two different sides are respectively connected to the front bar section 31 and the bar grip section 32 . The adapter base 34 has an accommodating space 341 and an opening 342 communicating the accommodating space 341 and the outside world. The opening 342 faces upwards and extends backward from the bend of the adapter seat 34 so that the end is adjacent to the handle section 32 .

In this embodiment, each side frame 3 is formed by processing two pipes and then assembling them to the adapter seat 34 . One of the pipes will become the front rod section 31 after the chute 311 is processed on the top side, and after the other pipe is bent into a fixed angle, the part for the user to hold will become the front rod section 31. The other part of the handle section 32 becomes the rear section 33 .

The folding devices 4 are respectively disposed in the side frames 3 and respectively disposed in the accommodating spaces 341 of the adapter bases 34 . Each retracting device 4 includes a pressing piece 41 , a retracting strip 42 , and a pin 43 . A portion of the pressing member 41 protrudes from the side frame 3 , and its top profile roughly matches the shape of the opening 342 of the adapter seat 34 . The pressing member 41 has a pressing portion 411 at the top part protruding from the opening 342 , a pivoting portion 412 at the middle section of the bottom side, and a connecting portion 413 at the front section. The pressing portion 411 is suitable for a user to press and operate. The retractable bar 42 has a guiding groove 421 extending up and down. The guide slot 421 runs through from one side of the retractable bar 42 to the other side. The latch 43 is fixed laterally on the bottom of the retractable bar 42 , and the two opposite ends pass through the front rod section 31 of the side frame 3 respectively, and are arranged in the corresponding sliding groove 311 so as to be movable up and down. , and is movably arranged in the corresponding positioning slot 222 in the front frame 2 . Driven by the pressing member 41 , the pin 43 is selectively engaged with the retracting groove portion 224 or the expanding groove portion 223 of the positioning groove 222 to position the side frame 3 .

The elastic members 5 are respectively disposed between the folding device 4 and the side frame 3 . Each elastic member 5 provides an elastic biasing force for driving the pin 43 to engage with the positioning slot 222 of the front frame 2 . In this embodiment, the elastic member 5 adopts a compression spring and surrounds the retractable bar 42 provided on the retractable device 4 . One end of the elastic member 5 leans against the limit rod 63 and is fixed on the adapter seat 34 of the side frame 3 , and the other end leans against the latch 43 .

The connecting device 6 includes a pivot 61 , a connecting rod 62 , and a limiting rod 63 . The pivot 61 pivotally connects the pivot portion 412 and the connecting seat 34 of the side frame 3 . The connecting rod 62 is pivotally connected to the connecting portion 413 and the top of the folding bar 42 . The limiting rod 63 is disposed on the side frame 3 and inserted into the guiding groove 421.

The structure of each component in this embodiment has been described above, and its operation mode will be described below.

Referring to FIG. 4 and FIG. 7 , each side frame 3 can change between an unfolded position and a folded position relative to the front frame 2 . For the convenience of understanding, the following description will be made at the user's orientation. When the left side frame 3 is at the expanded position, the two opposite ends of the left latch 43 are engaged with the expansion slots 223 of the front frame 2 respectively. At this time, the rear pole section 33 of the side frame 3 is away from the front frame 2 and is fixed at this position. The right side frame 3 is deployed in the same way as the aforementioned operation method, and the user can use the walker of this embodiment to assist in walking.

Referring to Fig. 7 and Fig. 8, when the side frame 3 is to be folded, it is only necessary to press and operate the pressing piece 41 of the folding device 4 so that it centers on the pivot 61 on the pivot portion 412 of itself Rotate, and pull up described folding bar 42 and simultaneously drive described bolt 43 displacement, make described bolt 43 break away from described expansion groove portion 223 of described front frame 2 respectively, at this moment, described bolt 43 can be free By moving in the positioning grooves 222 respectively, the user can rotate the side frame 3 to make the rear bar section 33 move toward the front frame 2 . When the side frame 3 reaches the retracted position, the rear bar segment 33 is adjacent to the front frame 2, and the retractable device 4 is elastically biased by the elastic member 5 (see FIG. 6 ). Under the action of force, the pin 43 will be driven to engage with the corresponding receiving groove 224 in the front frame 2 . In this way, the side frame 3 is fixed at the retracted position and cannot move. At this time, the walking aid of this embodiment is folded into a flat shape, which is convenient for storage.

When the walker is to be deployed again, one only needs to press the pressing part 41 of the retractable device 4 again, so that the latch 43 is in an active state, and at the same time rotate the side frame 3 to move toward the deployed position. When the latch 43 is engaged with the unfolding groove 223 by the action of the elastic member 5 , the side frame 3 returns to the unfolded position. Therefore, the user can change the side frame 3 between the unfolded position and the folded position by simply pressing and operating the pressing member 41 .

Through the above description, the advantages of the present invention can be summarized as follows:

1. Since the folding device 4 is set in the accommodation space 341 of the side frame 3, and the pressing member 41 is set near the user's thumb, it will not occupy the space held by the user's four fingers. space, so as to avoid hitting the user's hand.

2. Each sleeve 22 has two positioning grooves 222 on two opposite sides for setting the two opposite ends of the corresponding pin 43 respectively, so that a stable engagement state can be obtained and the stability of engagement and fixing can be improved.

3. The positioning groove 222 is formed by the top surface of the sleeve 22 being depressed downwards, rather than being located on the side of the sleeve 22. Therefore, when the folding device 4 is installed, the folding device 4 The pin 43 can be directly placed into the positioning slot 222 through the sliding slot 311 of the side frame 3 without first aligning the hole for installing the pin 43 on the folding bar 42 with the positioning slot 222 Then insert the latch 43, the assembly is more convenient.

4. The outer contour of the top of the pressing member 41 roughly matches the shape of the opening 342 of the adapter seat 34, thereby preventing external dust from entering the accommodating space 341 of the side frame 3, thereby affecting the folding Operation of device 4.

5. The elastic biasing force of the elastic member 5 drives the latch 43 to engage with the expansion groove 223 or the retraction groove 224 of the front frame 2, so as long as the side frame 3 reaches the When it is in the unfolded position or the folded position, the latch 43 will be automatically engaged and positioned without any additional operation by the user, which is more convenient to use.

The above is only an embodiment of the present invention, and should not limit the scope of the present invention with this, that is, all simple equivalent changes and modifications made according to the claims of the present invention and the contents of the description are still within the scope of this invention. the scope of the invention.

Claims (8)

1. a kind of walk helper includes:

Side arm, including two casings, each casing have locating slot, and the locating slot extends around the circumference of corresponding casing, And with expansion groove portion separately and fold groove portion；

Two side frames, are all inverted U shape, and each side frame includes front rod section, rear rod segment and adapter, and the front rod section is rotationally The casing of the side arm is set, and the adapter connects the front rod section, and has an accommodating space, and the side frame can be opposite The side arm changes between an expanded position and a stowed position, and in the expanded position, the rear rod segment is far from institute Side arm is stated, in the stowed position, the rear rod segment is adjacent to the side arm；

It is characterized by:

Two folding mechanisms are arranged in the accommodating space, and each folding mechanism includes pressing piece, folds item and bolt, described To be suitable for user's operation, the item that folds connects the pressing piece and is located at the side the prominent side frame in pressing piece part The front rod section of frame, the bolt be laterally installed in it is described fold item, and one end is pierced by the front rod section of the side frame and movable Ground is arranged in the locating slot of the side arm, the bolt by the pressing piece drive and be selectively sticked in the locating slot Fold groove portion or expansion groove portion, to position the side frame, in the expanded position, the bolt is sticked in the side arm Groove portion is unfolded, in the stowed position, what the bolt was sticked in the side arm folds groove portion.

2. walk helper according to claim 1, it is characterised in that: the walk helper also includes attachment device, the connection Device includes the gag lever post for being threaded through the side frame, and the item that folds of the folding mechanism has the guide channel extended up and down, described Guide channel is plugged by the gag lever post.

3. walk helper according to claim 1, it is characterised in that: the pressing piece of the folding mechanism, which has, is located at middle section Pivoting part, and the interconnecting piece at leading portion, the pivoting part and the side frame be pivotally connected, and the interconnecting piece and described folds item Pivot joint.

4. according to claim 1 to walk helper described in any claim in 3, it is characterised in that: the walk helper also includes Elastic component between the folding mechanism and the side frame is set, and it is described that the elastic component perseverance offer drives the bolt to be sticked in The resilient bias of the locating slot of side arm.

5. walk helper according to claim 4, it is characterised in that: the elastic component uses compressed spring, and around setting In the item that folds of the folding mechanism, and one end is fixed on the side frame, and the other end is by being against the bolt.

6. walk helper according to claim 5, it is characterised in that: the casing of the side arm has the concave surface for being formed in top surface Portion, the concave part recess define the locating slot.

7. walk helper according to claim 1, it is characterised in that: the front rod section of the side frame has the cunning extended up and down Slot, the sliding slot are mounted slidably for the bolt of the folding mechanism.

8. walk helper according to claim 1, it is characterised in that: the side frame further includes being connected to the accommodating space and outer The opening on boundary, it is described opening up, and the pressing piece part is exposed to the opening.