CN213892629U - Hand brake type handcart - Google Patents

Abstract

The utility model discloses a manual brake formula handcart, including automobile body, stay cord, set up movable handrail on the automobile body, set up in the truckle of automobile body bottom, be close to the truckle stop device of truckle setting and the resetting means who is connected with truckle stop device, wherein, the one end of stay cord is connected with movable handrail, and the other end is connected with truckle stop device. The utility model discloses a manual brake formula handcart can solve the inconvenient technical problem who just causes the injury easily to the operator of current service brake formula handcart brake.

Description

Hand brake type handcart

Technical Field

The utility model belongs to the technical field of the handcart, concretely relates to manual brake formula handcart.

Background

The truckle brake equipment of traditional subway station room operation dolly generally installs on the truckle, and when needs the brake, operating personnel brakes the truckle through the mode that the foot stepped on, nevertheless because the limitation of shallow installation truckle, install the truckle of shallow bottom sometimes when stepping on through the foot, be difficult to enough truckle brake equipment, cause the brake difficulty, when the shallow needs emergency brake, roll the foot easily and cause the injury to the operator when being close to the truckle with the tiptoe moreover.

SUMMERY OF THE UTILITY MODEL

In order to overcome the above shortcoming of prior art, an object of the utility model is to provide a manual brake formula handcart aims at solving the inconvenient technical problem who just causes the injury easily to the operator of current service brake formula handcart brake.

The utility model discloses a reach its purpose, the technical scheme who adopts as follows:

the utility model provides a manual brake formula handcart, includes automobile body, stay cord, set up in activity handrail on the automobile body, set up in the truckle of automobile body bottom, be close to truckle stop device that the truckle set up and with the resetting means that truckle stop device is connected, wherein, the one end of stay cord with activity handrail is connected, the other end with truckle stop device is connected.

Furthermore, the caster limiting device comprises a bolt and a limiting guide plate, a limiting groove for the bolt to extend into is formed in the caster, the limiting guide plate is provided with an installation part and a rotating part connected with the installation part, the bolt is fixed on the installation part, and the rotating part is rotatably connected to the bottom of the vehicle body; one end of the pull rope is connected with the movable armrest, and the other end of the pull rope is connected with the rotating part; the reset device is connected with the bolt and used for resetting the bolt.

Furthermore, the reset device comprises a reset spring, a caster mounting plate is arranged on the side surface of the caster, and the caster limiting device also comprises a limiting mounting plate arranged on the caster mounting plate; one end of the bolt is fixed on the mounting part, and the other end of the bolt can sequentially penetrate through the limiting mounting plate and the caster wheel mounting plate; the limiting mounting plate is provided with a mounting vacancy, and the reset spring is located in the mounting vacancy and sleeved on the plug pin.

Furthermore, a limiting gear is fixed on the side face of the caster wheel, a plurality of sawteeth are circumferentially distributed on the outline edge of the limiting gear, and a gap is reserved between every two adjacent sawteeth to form the limiting groove.

Further, a mounting box arranged close to the caster is mounted on the bottom of the vehicle body, and a first protruding shaft is arranged on the bottom of the mounting box; the rotating part is provided with a pull rope fixing part and a shaft hole which is arranged corresponding to the first protruding shaft; the first convex column is matched with the shaft hole to form a revolute pair; one end of the pull rope is connected with the movable handrail, and the other end of the pull rope is fixedly connected with the pull rope fixing part.

Further, a second protruding shaft is further arranged at the bottom of the mounting box, an arc-shaped groove hole corresponding to the second protruding shaft is further formed in the rotating portion, the arc-shaped groove hole is located between the pull rope fixing portion and the shaft hole, and the second protruding shaft is located in the arc-shaped groove hole.

Further, the caster limiting device further comprises a limiting plate fixed to the bottom of the vehicle body, a limiting hole is formed in the limiting plate, and the rotating portion penetrates through the limiting hole.

Further, the vehicle body is also provided with a fixed pulley which is in contact with the pull rope, wherein the fixed pulley is used for guiding the pull rope.

Further, a guide piece is further arranged at the bottom of the vehicle body and close to the fixed pulley, wherein a guide hole for the pull rope to pass through is formed in the guide piece.

Furthermore, the movable armrest is rotatably connected to the vehicle body, and a limiting block is fixed in the end part of the movable armrest; one end of the pull rope penetrates through the end part of the movable handrail and is connected with the limiting block, and the other end of the pull rope is connected with the caster limiting device.

Furthermore, a fixed armrest which is arranged close to the movable armrest is further arranged on the vehicle body, and the fixed armrest is positioned below or above the movable armrest.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model provides a manual brake formula handcart when needs brake or remove the brake, only need order about truckle stop device through the mode of operation activity handrail to the truckle locking or unblock can, it is not only convenient but also safe to use.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic view of an overall structure of a hand brake type cart according to an embodiment of the present invention;

fig. 2 is a schematic view of a structural principle of a hand brake type cart according to an embodiment of the present invention;

FIG. 3 is an enlarged schematic view at B of FIG. 2;

FIG. 4 is an enlarged schematic view at C of FIG. 2;

FIG. 5 is a bottom view of FIG. 2;

FIG. 6 is an enlarged schematic view at E in FIG. 5;

fig. 7 is a partial bottom view of a hand brake cart in a caster position in accordance with an embodiment of the present invention;

fig. 8 is a schematic perspective view of a limiting guide plate according to an embodiment of the present invention;

FIG. 9 is a schematic view of the structure of FIG. 2 taken along the direction of arrow D;

FIG. 10 is an enlarged schematic view at F of FIG. 9;

fig. 11 is a schematic structural diagram of a hand brake type cart according to another embodiment of the present invention;

fig. 12 is an enlarged schematic view at a in fig. 11.

Description of reference numerals:

1-vehicle body, 2-movable armrest, 21-limit block, 3-fixed armrest, 4-caster, 41-limit gear, 411-limit groove, 5-pull rope, 6-caster limit device, 61-bolt, 621-installation part, 622-rotation part, 6221-shaft hole, 6222-arc groove hole, 623-pull rope fixing part, 63-limit installation plate, 64-limit plate, 71-reset spring, 8-installation box, 81-first convex shaft, 82-second convex shaft, 9-caster installation plate, 10-fixed pulley, 11-guide sheet and 111-guide hole.

The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1 to 3, an embodiment of the present invention provides a hand brake type cart, which includes a cart body 1, a pull rope 5, a movable armrest 2 disposed on the cart body 1, a caster 4 disposed at the bottom of the cart body 1, a caster limiting device 6 disposed near the caster 4, and a reset device (not shown) connected to the caster limiting device 6, wherein one end of the pull rope 5 is connected to the movable armrest 2, and the other end is connected to the caster limiting device 6; the caster limiting device 6 is used for locking the caster 4; the resetting device is used for resetting the caster limiting device 6.

In the present embodiment, the number of the caster 4 is generally plural, for example, two, three, four, etc., and preferably, the number of the caster 4 is four. The number of the caster limiting devices 6 can be flexibly set according to actual use requirements, and can be one or more, so long as the purpose of braking can be achieved, and the embodiment does not specifically limit the purpose.

In this embodiment, the hand brake type cart can be used for braking and braking release through the following two different operation modes:

the first mode is that the brake is realized when the movable armrest 2 is loosened, and the brake is released when the movable armrest 2 is pressed down, specifically, when the hand brake type handcart needs to be pushed, the movable armrest 2 is pressed down, the pull rope 5 is pulled by the movable armrest 2, the pull rope 5 pulls the corresponding caster limiting device 6 to act, the caster limiting device 6 is separated from the caster 4 to release the locking of the caster 4, so that the hand brake type handcart can be normally pushed; and when needing to brake, loosen the activity handrail 2, the pulling force of stay cord 5 to truckle stop device 6 weakens or even disappears, and simultaneously under reset device's effect, truckle stop device 6 resets and realizes the locking to truckle 4 to realize the brake.

The second mode is that the brake is realized when the movable handrail 2 is pressed down, and the brake is released when the movable handrail 2 is loosened, specifically, when the brake is needed, the movable handrail 2 is pressed down, the pull rope 5 is pulled by the movable handrail 2, and the pull rope 5 pulls the corresponding caster limiting device 6 to lock the caster 4, so as to realize the brake; when the hand brake type handcart needs to be pushed, the movable handrail 2 is loosened, the pulling force of the pull rope 5 on the caster limiting device 6 is weakened or even disappears, and meanwhile, under the action of the resetting device, the caster limiting device 6 is reset to be separated from the caster 4, so that the locking of the caster 4 is released, and the hand brake type handcart can be normally pushed.

Therefore, the hand brake type trolley provided by the embodiment can be used conveniently and safely only by driving the caster limiting device 6 to lock or unlock the caster 4 in a mode of operating the movable handrail 2 when braking or brake releasing is needed. In some specific application scenarios, in order to prevent the cart from slipping when being unattended and causing an accident, the braking scheme (i.e., the hand brake release scheme) of the first mode is preferably adopted.

Further, referring to fig. 1 to 3 and 5 to 8, in an exemplary embodiment, the caster limiting device 6 includes a bolt 61 and a limiting guide plate, the caster 4 is provided with a limiting groove 411 into which the bolt 61 can extend, the limiting guide plate has a mounting portion 621 and a rotating portion 622 connected with the mounting portion 621, the bolt 61 is fixed on the mounting portion 621, and the rotating portion 622 is rotatably connected to the bottom of the vehicle body 1; one end of the pull rope 5 is connected with the movable armrest 2, and the other end is connected with the rotating part 622; the resetting device is connected with the bolt 61 and is used for resetting the bolt 61; when the latch 61 is reset, the latch 61 extends into the limiting groove 411 to lock the caster 4, or when the latch 61 is reset, the latch 61 is separated from the limiting groove 411 to unlock the caster 4. Illustratively, the mounting portion 621 is longitudinally arranged and has an "L" shape, the rotating portion 622 is transversely arranged, and the rotating portion 622 includes an inclined portion (not shown) and an included angle portion (not shown) having a "7" shape; one end of the inclined portion is connected to the upper end of the mounting portion 621, and the other end is connected to the angle portion.

In this embodiment, based on the above structural design, according to different needs, the hand brake may be performed by pressing down the movable armrest 2 or releasing the movable armrest 2, wherein in some application scenarios, the latch 61 may be disposed near an outer side of the caster 4 (i.e., a lower side of the caster 4 in fig. 6), and at this time, the hand brake may be performed by releasing the movable armrest 2, specifically, referring to fig. 1, 2, 3, 5, and 6, when the hand brake type cart needs to be pushed, the movable armrest 2 is pressed down, the movable armrest 2 pulls the pull rope 5, and the pull rope 5 pulls the rotating portion 622 to rotate, so that the mounting portion 621 rotates in a direction away from the outer side of the caster 4, and further the latch 61 is driven to disengage from the limiting groove 411 to release the locking of the caster 4, so that the hand brake type cart can be normally pushed; when the brake is needed, the movable handrail 2 is loosened, the pulling force of the pull rope 5 on the rotating part 622 is weakened or even disappears, and meanwhile, under the action of the reset device, the bolt 61 is reset and extends into the limit groove 411 to lock the caster 4, so that the brake is realized.

In other application scenarios, the plug 61 may be disposed close to the inner side of the caster 4 (i.e., the upper side of the caster 4 in fig. 7), and at this time, the brake may be performed by pressing down the movable armrest 2, specifically, referring to fig. 1, fig. 3, fig. 5, fig. 7, and fig. 8, when the brake is required, the movable armrest 2 is pressed down, the pull rope 5 is pulled by the movable armrest 2, and the pull rope 5 pulls the rotating portion 622 to rotate, so that the mounting portion 621 rotates in a direction close to the inner side of the caster 4, and further the plug 61 is driven to extend into the limit groove 411 to lock the caster 4, thereby performing the brake; when the hand brake type handcart needs to be pushed, the movable handrail 2 is loosened, the pulling force of the pulling rope 5 on the rotating part 622 is weakened or even disappears, and meanwhile, under the action of the resetting device, the bolt 61 is reset and separated from the limiting groove 411 to release the locking of the caster 4, so that the hand brake type handcart can be normally pushed.

Further, referring to fig. 3, 6, 9 and 10, in an exemplary embodiment, the return device includes a return spring 71, the caster 4 is provided with a caster mounting plate 9 on a side thereof, the caster limiting device 6 further includes a limiting mounting plate 63 mounted on the caster mounting plate 9; one end of the bolt 61 is fixed on the mounting part 621, and the other end can sequentially penetrate through the limiting mounting plate 63 and the caster mounting plate 9; the limiting installation plate 63 is provided with an installation vacancy, and the return spring 71 is positioned in the installation vacancy and sleeved on the bolt 61. Illustratively, a limit gear 41 is fixed on the side surface of the caster 4, a plurality of saw teeth are circumferentially distributed on the contour edge of the limit gear 41, and a space exists between two adjacent saw teeth to form the limit groove 411, wherein when a hand brake loosening scheme is adopted, the limit gear 41 can be arranged on the outer side surface of the caster 4; when the brake is performed by pressing down the movable handle 2, the limit gear 41 may be disposed on the inner side surface of the caster 4.

In this embodiment, based on the above-mentioned structural design, the pin 61 can be reset by the elastic restoring force provided by the return spring 71, wherein, in some embodiments, when the hand brake is released, one end of the return spring 71 can be abutted against the limit mounting plate 63, and the other end is fixed to the outer wall of the pin 61 (for example, a threaded hole can be formed in a corresponding position of the pin 61, and then a screw is screwed into the threaded hole, and the end of the return spring 71 close to the caster mounting plate 9 is fixed to the outer wall of the pin 61 by the screw); in other embodiments, when the brake is performed by pressing down the movable armrest 2, one end of the return spring 71 may abut against the caster mounting plate 9, and the other end of the return spring may be fixed to the outer wall of the bolt 61 (for example, a threaded hole may be formed in a corresponding position of the bolt 61, and then a screw may be screwed into the threaded hole, and one end of the return spring 71 close to the limit mounting plate 63 may be fixed to the outer wall of the bolt 61 by the screw).

Further, referring to fig. 3, 6 and 7, in an exemplary embodiment, a mounting box 8 disposed near the caster 4 is mounted on the bottom of the vehicle body 1, and the mounting box 8 has a first protruding shaft 81 on the bottom; the rotating part 622 is provided with a pull rope fixing part 623 and a shaft hole 6221 arranged corresponding to the first protruding shaft 81; wherein, the first convex column is matched with the shaft hole 6221 to form a revolute pair; one end of the pull rope 5 is connected to the movable armrest 2, and the other end is fixedly connected to the pull rope fixing portion 623.

In this embodiment, based on the above structural design, make whole spacing deflector can rotate as the pivot under the tensile force effect of stay cord 5 or the effect of the elastic restoring force of reset spring 71 to first protruding axle 81, and then drive bolt 61 and lock or unblock corresponding truckle 4.

Further, referring to fig. 6 to 8, in an exemplary embodiment, the bottom of the mounting box 8 further has a second protruding shaft 82, the rotating portion 622 is further provided with an arc-shaped slot 6222 corresponding to the second protruding shaft 82, the arc-shaped slot 6222 is located between the rope fixing portion 623 and the shaft hole 6221, and the second protruding shaft 82 is located in the arc-shaped slot 6222.

In this embodiment, based on the above structural design, in the process that the rotating portion 622 rotates by using the first protruding shaft 81 as the rotating shaft, the second protruding shaft 82 can make relative motion along the arc track of the arc-shaped slot 6222, so as to play a role of guiding, so that the rotation of the whole limiting guide plate can be more stable.

Further, referring to fig. 1, 3, 6, 7 and 10, in an exemplary embodiment, the caster limiting device 6 further includes a limiting plate 64 fixed to the bottom of the vehicle body 1, the limiting plate 64 is provided with a limiting hole (not shown), and the rotating portion 622 is disposed through the limiting hole. Illustratively, the limiting hole is rectangular.

In this embodiment, based on the above structural design, the limiting plate 64 is additionally provided to limit the rotation range of the rotation portion 622, so that when the latch 61 is moved in place to complete the locking or unlocking of the caster 4, the limiting plate 64 can limit the rotation portion 622 to continue rotating, so that a user can judge whether the latch 61 is moved in place only by the touch feeling when operating the movable armrest 2 without observing with naked eyes, thereby being beneficial to improving the user experience.

Further, referring to fig. 1 and 2, in an exemplary embodiment, the caster limiting devices 6 and the pull ropes 5 are provided in pairs in order to improve the smoothness of braking and improve the operational feeling of the movable armrest 2.

Further, referring to fig. 2, 4 and 10, in an exemplary embodiment, the body 1 is further mounted with a fixed pulley 10 in contact with the pull rope 5, wherein the fixed pulley 10 is used for guiding the pull rope 5.

In this embodiment, based on the above structural design, the fixed pulley 10 is provided to guide the pull rope 5, so that the movement of the pull rope 5 is smoother, and therefore, when the pull rope 5 is pulled by the movable armrest 2, the labor can be saved. In addition, in order to increase the service life of the rope 5, the rope 5 is preferably a wire rope.

Further, referring to fig. 2, 4 and 10, in an exemplary embodiment, a guide piece 11 disposed near the fixed pulley 10 is further disposed on the bottom of the vehicle body 1, wherein the guide piece 11 is opened with a guide hole 111 through which the pull rope 5 can pass.

In this embodiment, based on the above structural design, the deviation of the rope 5 on the surface of the fixed pulley 10 can be prevented during the movement, so that the movement of the rope 5 can be more smooth and stable, and the braking action or the releasing action can be better completed.

Further, referring to fig. 1, 11 and 12, in an exemplary embodiment, the movable armrest 2 is rotatably coupled to the vehicle body 1, and a stopper 21 is fixed inside an end portion of the movable armrest 2; one end of the pull rope 5 penetrates through the end part of the movable armrest 2 and is connected with the limiting block 21 (illustratively, one end of the pull rope 5 close to the limiting block 21 penetrates through the limiting block 21 and can be abutted against the top of the limiting block 21), and the other end of the pull rope 5 is connected with the caster limiting device 6.

In the present embodiment, based on the above-mentioned structural design, the user can pull the pulling rope 5 by pressing down the movable armrest 2.

Further, referring to fig. 1 and 2, in an exemplary embodiment, the vehicle body 1 is further provided with a fixed armrest 3 disposed adjacent to the movable armrest 2, and the fixed armrest 3 is located below or above the movable armrest 2.

In this embodiment, based on the above structural design, the user can push the cart more conveniently and operate the movable armrest 2 more smoothly by adding the fixed armrest 3 and the movable armrest 2 for use in combination.

It should be noted that other contents of the hand brake type cart disclosed in the present invention can be referred to in the prior art, and are not described herein again.

In addition, it should be noted that the descriptions related to "first", "second", etc. in the present invention are only used for descriptive purposes 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 at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The above is only the optional embodiment of the present invention, and not therefore the limit to the patent scope of the present invention, all the concepts of the present invention utilize the equivalent structure transformation of the content of the specification and the attached drawings, or the direct/indirect application in other related technical fields is included in the patent protection scope of the present invention.

Claims (10)

1. The hand brake type trolley is characterized by comprising a trolley body, a pull rope, a movable handrail, casters, a caster limiting device and a reset device, wherein the movable handrail is arranged on the trolley body, the casters are arranged at the bottom of the trolley body, the caster limiting device is close to the casters, the reset device is connected with the caster limiting device, one end of the pull rope is connected with the movable handrail, and the other end of the pull rope is connected with the caster limiting device.

2. The hand brake type trolley according to claim 1, wherein the caster limiting device comprises a bolt and a limiting guide plate, the caster is provided with a limiting groove into which the bolt can extend, the limiting guide plate is provided with an installation part and a rotating part connected with the installation part, the bolt is fixed on the installation part, and the rotating part is rotatably connected to the bottom of the trolley body; one end of the pull rope is connected with the movable armrest, and the other end of the pull rope is connected with the rotating part; the reset device is connected with the bolt and used for resetting the bolt.

3. The handbrake trolley of claim 2 wherein said reset means comprises a reset spring, said caster wheel having a caster wheel mounting plate disposed on a side thereof, said caster wheel restraint means further comprising a restraint mounting plate mounted on said caster wheel mounting plate; one end of the bolt is fixed on the mounting part, and the other end of the bolt can sequentially penetrate through the limiting mounting plate and the caster wheel mounting plate; the limiting mounting plate is provided with a mounting vacancy, and the reset spring is located in the mounting vacancy and sleeved on the plug pin.

4. The handbrake trolley of claim 2 wherein a mounting box is mounted to the bottom of said body adjacent said caster wheel, said mounting box having a first protruding shaft on the bottom thereof; the rotating part is provided with a pull rope fixing part and a shaft hole which is arranged corresponding to the first protruding shaft; the first convex column is matched with the shaft hole to form a revolute pair; one end of the pull rope is connected with the movable handrail, and the other end of the pull rope is fixedly connected with the pull rope fixing part.

5. The hand brake type cart according to claim 4, wherein said mounting box further has a second protruding shaft at a bottom thereof, said rotating portion further has an arc-shaped slot corresponding to said second protruding shaft, said arc-shaped slot is located between said rope-fixing portion and said axle hole, and said second protruding shaft is located in said arc-shaped slot.

6. The hand brake type cart according to any one of claims 2 to 5, wherein the caster limiting device further comprises a limiting plate fixed to the bottom of the cart body, the limiting plate is provided with a limiting hole, and the rotating portion penetrates through the limiting hole.

7. Hand brake trolley according to any of the claims 1-5, characterized in that a fixed pulley is mounted on the body in contact with the pulling rope, wherein the fixed pulley is used for guiding the pulling rope.

8. The hand brake type cart according to claim 7, further comprising a guide plate disposed adjacent to said fixed pulley at a bottom of said cart body, wherein said guide plate defines a guide hole for said pull rope to pass through.

9. The hand brake trolley according to any one of claims 1 to 5, wherein the movable armrest is pivotally connected to the body, and a stopper is fixed inside an end of the movable armrest; one end of the pull rope penetrates through the end part of the movable handrail and is connected with the limiting block, and the other end of the pull rope is connected with the caster limiting device.

10. The hand brake cart of claim 9, further comprising a fixed armrest disposed adjacent to the movable armrest, wherein the fixed armrest is positioned below or above the movable armrest.

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