TWI729859B - Labor-saving trolley - Google Patents

Abstract

A labor-saving trolley, comprising: a trolley body; an auxiliary support seat with a seat body and an auxiliary wheel; the front end of the seat body is pivotally connected to the cart body, and the auxiliary wheel is arranged at the bottom of the rear end of the seat body; A controllable angle adjuster with a retractor, a controller, and a linkage. One end of the retractor is pivotally connected to the cart body, and the other end is pivotally connected to the top of the rear end of the auxiliary support base. The controller is arranged at The cart body can be reciprocated from an adjusted position to a fixed position by an external force. The linkage is connected between the controller and the retractor; when the controller is in the adjusted position, the linkage is operated The retractor actuates the retractor to make the retractor movable and displaceable. The angle between the auxiliary support base and the cart body can be adjusted. When the controller is in a fixed position, the retractor is restricted and fixed, and the auxiliary support base and The angle between the main body of the cart is fixed; thereby, the angle between the auxiliary support base and the main body of the cart can be adjusted and fixed, so as to achieve the effect of labor saving and good applicability.

Description

Labor-saving trolley

This creation is related to the trolley, more specifically it refers to a labor-saving trolley.

According to the general trolley, there are mainly four-wheeled and two-wheeled types. Among them, the four-wheeled trolley has a larger floor area and can be used to stack wider items. It is more stable to push on wide roads, but it is larger and difficult to store, and it is less flexible to push on narrow roads. The trolley has a small floor area, but it can be used to push taller objects. It is more laborious to push, but it is more flexible on narrow roads. Because four-wheeled trolleys and two-wheeled trolleys have their own advantages and disadvantages, they have their own advantages. The ethnic group of preferences.

Here, for a two-wheeled trolley, its structure mainly has a carrying frame that is generally L-shaped and two wheel bodies pivotally connected to the bottom of the carrying frame. The goods are stacked on the carrying frame, and when you want to push it, you must first The carrying frame is pulled down from the upright state to the obliquely standing state, so that the bottom of the carrying frame is out of contact with the ground, and only by the wheel body contacting the ground, the user can push the carrying frame to walk to move the goods. However, when this two-wheeled trolley is pushed, the user must not only apply the force of the trolley forward (or backward), but also apply the force of the trolley upward to resist the goods. The downward gravity can keep the carrier frame in an oblique state, but in this way, the user will have a lot of effort when pushing.

In view of this, in order to improve the prior art, the conventional two-wheeled trolley has a relatively laborious problem in use. For this reason, this creation provides a labor-saving trolley, which includes: a trolley body; an auxiliary support seat with a base body and an auxiliary wheel; the front end of the seat body is pivotally connected to the cart body, and the auxiliary wheel is arranged at The bottom of the rear end of the seat body; a controllable angle adjuster with a retractor, a controller and a One end of the retractor is pivotally connected to the cart body, and the other end is pivotally connected to the top of the rear end of the auxiliary support base. The controller is arranged on the cart body and can be applied to an adjusted position to a fixed position by external force Reciprocating between positions, the linkage is connected between the controller and the retractor; when the controller is in the adjusted position, the retractor is actuated through the linkage, so that the retractor can move, and the auxiliary support The angle between the seat and the cart body can be adjusted. When the controller is in a fixed position, the retractor is restricted and fixed, and the angle between the auxiliary support base and the cart body is fixed; so as to achieve adjustment and fixation The included angle between the auxiliary support base and the main body of the cart can save effort and have good applicability.

100: labor-saving trolley

10: Cart body

11: Carrying frame

111: bottom plate

112: Stand

12: Wheels

121: Axle

122: Wheel Center

13: Basket

20: Auxiliary support base

21: Seat

22: auxiliary wheels

30: Controllable angle adjuster

40: Retractor

41: Outer tube

411: Outer tube opening

42: inner tube

421: inner tube opening

43: active part

431: External connection piece

432: inner connecting pipe

44: Torsion Spring

45: fixed tube

46: Threading

47: Carrier frame connector

471: Carrier Frame Pivot

472: Wearing Department

473: piercing

48: Support base connector

50: Controller

60: Linkage

90: Cargo

The first figure is a three-dimensional exploded view of a preferred embodiment of this creation.

The second figure is a three-dimensional assembly diagram of the embodiment shown in the first figure.

The third figure is an exploded view of the partial components of the embodiment shown in the first figure.

The fourth figure is a cross-sectional view of a partial component of the embodiment shown in the first figure.

The fifth to eighth figures are schematic diagrams of the operation of the embodiment shown in the first figure.

The ninth picture is a three-dimensional view of another implementation aspect of this creation.

In order to enable your reviewer to have a better understanding and recognition of the features and characteristics of this creation, the following examples are listed and illustrated in conjunction with the diagrams as follows: Please refer to the first to eighth figures, which are a preferred implementation of this creation The labor-saving trolley 100 provided in the example mainly includes a trolley body 10, an auxiliary support base 20, and a controllable angle adjuster 30. Please refer to the first and second figures. The trolley body 10 has A carrier 11 and a wheel set 12. The supporting frame 11 is generally L-shaped and has a bottom plate 111 and a stand 112 connected to one side of the bottom plate 111 and extending upward. The wheel set 12 is pivotally connected to the bottom of the supporting frame 11, and the wheel set 12 has a Axle 121 and a two-wheel body 122, the axle 122 is horizontally pivoted in the stand 112, and the two-wheel body 122 is connected to the two ends of the axle 121, so that the two-wheel body 122 can rotate in situ relative to the carrier 11 .

Please refer to the first and second figures. The auxiliary support base 20 has a base 21 and an auxiliary wheel 22. The front end of the seat body 21 is pivotally connected to the wheel shaft 121 of the cart body 10, so that the seat body 21 can be opened and closed within a predetermined angle relative to the cart body 10 with the front end as the axis, and the auxiliary wheel 22 is connected to the The bottom of the rear end of the seat body 21 can be rotated in situ relative to the seat body 21.

Please refer to the first to fourth figures, the controllable angle adjuster 30 has a retractor 40, a controller 50 and a linkage 60. One end of the retractor 40 is pivotally connected to the stand 112 of the cart body 10, and the other end is pivotally connected to the top of the rear end of the seat body 21 of the auxiliary support base 20, and the controller 50 is arranged on the cart The stand 112 of the main body 10 can be reciprocated from an adjusted position to a fixed position by an external force. The linkage 60 is connected between the retractor 40 and the controller 50 so that the controller 50 can act as a When in the adjusted position, the linkage 60 links the retractor 40 to act, so that the retractor 40 can be freely extended and contracted to adjust the angle between the auxiliary support base 20 and the cart body 10, when the When the controller 50 is in the fixed position, the retractor 40 is restricted and cannot be extended or shortened, so as to fix the angle between the auxiliary support base 20 and the cart body 10. Thus, the angle between the auxiliary support base 20 and the cart body 10 can be adjusted, and the angle between the auxiliary support base 20 and the cart main body 10 can be fixed.

Please refer to the first to fourth figures. In this embodiment, the retractor 40 has an outer tube 41, an inner tube 42, an acting member 43, two torsion springs 44, two fixed tubes 45, and a through shaft 46. , A supporting frame connecting piece 47 and a supporting base connecting piece 48. The outer tube 41 is radially opened with an opening 411 that communicates with the inner and outer tubes; the inner tube 42 is arranged in the outer tube 41, and the inner tube 42 is radially opened with an inner tube opening 421 that communicates with the inner and outer parts. The pipe opening 421 communicates with the outer pipe opening 411; the acting member 43 has an outer connecting piece 431 and an inner connecting pipe 432 connected to one end of the outer connecting piece 431, and the inner connecting pipe 432 of the acting piece 43 is disposed in the Inside the inner tube 42, the outer connecting piece 431 protrudes outside the inner tube opening 421 and the outer tube opening 411; the two torsion springs 44 are arranged in the inner tube 42 and located on the acting member 43 Outside the two ends of the inner connecting tube 432, the two torsion springs 44 each have one end (inner end) tightly abutted and connected to the two ends of the inner connecting tube 432 of the acting member 43, so that the two torsion springs 44 interact with the The piece 43 forms a linkage; the two fixed pipes 45 are arranged in the outer pipe 41 and are connected to the outer pipe 41 Fixed connection, so that the two fixed tubes 45 abut against the two ends of the inner tube 42 and are respectively connected to the outer ends of the torsion springs 44, so that the two fixed tubes 45 restrict the inner tube 42 and function The axial position of the part 43 and the torsion spring 44 in the outer tube 41; the through shaft 46 passes through the two fixed tubes 45, the two torsion springs 44 and the inner connecting tube 432 of the acting part 43, and the through The two ends of the shaft 46 extend beyond the two ends of the outer tube 41; the supporting frame connector 47 has a supporting frame pivot portion 471 and a penetration portion 472 connected to the supporting frame pivot portion 471. The supporting frame pivot portion 471 is pivotally connected to the stand 112 of the supporting frame 11 of the cart body 10, and the penetration portion 472 has a through hole 473 through which one end of the through shaft 46 passes; the support seat One end of the connecting member 48 is pivotally connected to the top of the rear end of the seat body 21 of the auxiliary support base 20, and the other end is connected to the other end of the through shaft 46.

Please refer to the first and second figures. In this embodiment, the controller 50 is generally a brake lever. When pressed by an external force, the position is adjusted, and when the external force is released, the position is fixed.

Please refer to the first and second figures. The link 60 is a wire body, one end is connected to the controller 50, and the other end is connected to the outer connecting piece 431 of the acting member 43 of the retractor 40.

Therefore, the foregoing is an introduction to the various components and combinations of the labor-saving trolley 100 provided by a preferred embodiment of this creation, and then the characteristics of its use are introduced as follows: First, when using this creation, the goods are first After 90 is stacked on the carrier 11 of the cart body 10, hold the top of the carrier 11 with your hand, and tilt the carrier 11 down to a height suitable for the user to move (as shown in the fifth figure) ). Then, the user presses the controller 50 of the controllable angle adjuster 30 to the adjusted position, so that the controller 50 pulls the action member 43 of the retractor 40 through the link 60 to turn it (as shown in the sixth figure). (Shown), the torsion spring 44 is driven to loosen by the turning action member 43, so that a gap is formed between the through shaft 46 and the torsion spring 44, that is, the torsion spring 44 no longer faces the through shaft 46 at this time. Tighten, so that the through shaft 46 can move axially in the torsion spring 44, so that the auxiliary support base 20 connected with the through shaft 46 will pivot downward by its own weight Until the auxiliary wheel 22 touches the ground (as shown in the seventh figure). Then, the user relaxes the controller 50 again to return the controller 50 to a fixed position. At this time, the torsion spring 44 is no longer under the action of the coupling 60, that is, the torsion spring 44 returns to the tightened state and is again tightened. Tighter than to wear On the shaft 46 (as shown in the eighth figure), the through shaft 46 can no longer move and move, and at the same time, the angle (the included angle) between the auxiliary support base 20 and the cart body 10 is fixed. In this way, even if the user no longer exerts force on the cart body 10, the auxiliary support base 20 and the controllable angle adjuster 30 can work together to support the inclined cart body 10 fixed.

Therefore, in this way, the user does not need to apply the upward force on the cart body to resist the downward gravity of the cargo 90 when pushing the creation, but only needs to apply the previous force. , In order to achieve the effect of saving effort.

In addition, the angle at which the cart body 10 is tilted and then fixed in this creation can be determined by the angle when the user initially pulls the bottom of the cart body 10. Therefore, different users can use different tilt angles. Any tilt angle of the cart body 10 can be fixed to suit users of different heights to enhance the applicability of this creation.

Furthermore, as shown in the ninth figure, the cart body 10 of the present creation further has a basket body 13, and the basket body 13 is fixed on the carrying frame 11 so that the user can place small and irregular objects. Increase the versatility of this creation.

The above disclosures are only the preferred embodiments provided by this creation, and are not intended to limit the scope of implementation of this creation. All relevant artisans in this technical field who make equal changes based on this creation should belong to this creation. The scope of coverage.

100: labor-saving trolley

10: Cart body

11: Carrying frame

111: bottom plate

112: Stand

12: Wheels

121: Axle

122: Wheel Center

13: Basket

20: Auxiliary support base

21: Seat

22: auxiliary wheels

30: Controllable angle adjuster

40: Retractor

50: Controller

60: Linkage

Claims (9)

A labor-saving trolley, comprising: a trolley body; an auxiliary support seat with a seat body and an auxiliary wheel; the front end of the seat body is pivotally connected to the cart body, and the auxiliary wheel is arranged at the bottom of the rear end of the seat body; A controllable angle adjuster with a retractor, a controller, and a linkage. One end of the retractor is pivotally connected to the cart body, and the other end is pivotally connected to the top of the rear end of the auxiliary support base. The controller is arranged at The main body of the cart can be reciprocated from an adjusted position to a fixed position by an external force. The linkage is a wire body, one end is connected to the controller, and the other end is connected to the retractor; When the controller is in the adjusted position, the retractor is actuated by the linkage, so that the retractor can be movably displaced. The angle between the auxiliary support base and the cart body can be adjusted. When the controller is in the fixed position, the retractable The device is restricted and fixed, and the angle between the auxiliary support base and the main body of the cart is fixed. The labor-saving trolley according to claim 1, wherein the main body of the trolley has a carrying frame and a wheel set; the carrying frame has a bottom plate and a stand connected to one side of the bottom plate and extending upward, and the wheel set has a Wheel axle and two wheel bodies, the wheel axle is pivoted in the stand, the two wheel system is connected to the two ends of the wheel axle; the front end of the seat body of the auxiliary support seat is pivotally connected to the wheel axle, and one end of the retractor is connected to the axle The vertical frame of the cart body is pivotally connected, and the controller is located on the vertical frame. The labor-saving trolley according to claim 2, wherein the trolley body further has a basket body, and the basket system is fixed on the carrying frame. The labor-saving trolley according to claim 1, wherein the controller is a brake lever, which is in an adjusted position when pressed by an external force, and in a fixed position when the external force is released. The labor-saving trolley according to claim 1, wherein the retractor has an outer tube, an acting member, at least one torsion spring, a through shaft, a bearing frame connector and a support seat connector; the outer tube An opening for communicating the inner and outer pipes is opened radially; the acting member has an outer connecting piece and an inner connecting pipe connected with the outer connecting piece, the inner connecting pipe is arranged in the outer pipe, and the outer connecting piece is The torsion spring extends outside the opening of the outer tube and is connected to the coupling; the torsion spring is arranged in the outer tube, one end is connected to the inner connecting tube of the acting member, and the other end is connected to the outer tube; the threaded shaft The inner connecting tube passing through the torsion spring and the acting member, the two ends of the threading shaft extend out of the two ends of the outer tube; the carrying frame connecting member is pivotally connected to the cart body and has a perforation, The perforation allows one end of the through shaft to pass through; the support base connector is pivotally connected to the top of the rear end of the seat body of the auxiliary support base, and is connected to the other end of the through shaft; when the controller is in a fixed position The torsion spring is tightened on the threaded shaft, so that the threaded shaft cannot move. When the controller is in the adjusted position, the torsion spring loosens the threaded shaft to allow the threaded shaft to move. The labor-saving trolley according to claim 5, wherein the retractor further has an inner tube, the inner tube is arranged in the outer tube, the inner tube is radially opened with an inner tube opening connecting the inner and outer parts, and the inner tube The opening communicates with the outer tube opening; the torsion spring is located in the inner tube, the inner connecting tube of the acting member is located in the inner tube, and the outer connecting piece penetrates through the inner tube opening and the outer tube opening at the same time outer. The labor-saving trolley according to claim 5, wherein the retractor further has at least one fixed tube, the fixed tube is arranged in the outer tube for the threading shaft to pass through, and the fixed tube is fixedly connected to the outer tube, And connected to the other end of the torsion spring to indirectly connect the torsion spring with the outer tube through the fixed tube. The labor-saving trolley according to claim 5, wherein the bearing frame connecting member has a bearing frame pivot portion and a penetration portion connected with the bearing frame pivot portion, and the bearing frame pivot portion is connected to the cart body It is pivotally connected, and the perforation is formed in the penetrating part. The labor-saving trolley according to claim 1, wherein the retractor has an outer tube, an inner tube, an acting member, two torsion springs, two fixed tubes, a shaft, a bearing frame connector, and a support base connector The outer tube is radially opened with an opening that communicates with the inner and outer tubes; the inner tube is arranged in the outer tube, and the inner tube is radially opened with an inner tube opening that communicates with the inner and outer parts, and the inner tube opening is connected to the outer tube. The pipe opening is connected; the acting piece has an outer connecting piece and an inner connecting pipe connected to one end of the outer connecting piece, the acting piece The inner connecting tube is arranged in the inner tube, and the outer connecting piece extends beyond the opening of the inner tube and the outer tube, and is connected to the coupling; the two torsion springs are arranged in the inner tube, The two torsion springs are respectively connected to the two ends of the inner connecting pipe of the acting piece by their inner ends, so that the two torsion springs and the acting piece form Linkage; The two fixed pipes are arranged in the outer pipe and fixedly connected with the outer pipe, so that the two fixed pipes abut against the two ends of the inner pipe respectively, and are respectively connected to the outside of the torsion springs End; the through shaft system passes through the two fixed tubes, the two torsion springs and the inner connecting tube of the acting member, and the two ends of the through shaft extend out of the two ends of the outer tube; the bearing frame connecting piece It has a bearing frame pivotal portion and a penetrating portion connected with the bearing frame pivotal portion, the bearing frame pivotal portion is pivotally connected to the cart body, and the penetrating portion has a perforation for the perforation One end passes through; one end of the support seat connecting piece is pivotally connected to the top of the rear end of the seat body of the auxiliary support seat, and the other end is connected to the other end of the through shaft.

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