CN217804883U

CN217804883U - Rear wheel brake mechanism of handcart

Info

Publication number: CN217804883U
Application number: CN202221631917.8U
Authority: CN
Inventors: 孙建锋
Original assignee: Cixi Honeyway Baby Products Co ltd
Current assignee: Cixi Honeyway Baby Products Co ltd
Priority date: 2022-06-27
Filing date: 2022-06-27
Publication date: 2022-11-15
Anticipated expiration: 2032-06-27

Abstract

The utility model discloses a rear wheel brake mechanism of handcart relates to handcart technical field, which comprises a vehicle rack, the connected to the frame connector, be fixed with the main shaft on the connector, the wheel is rotatory on the main shaft, still including the brake disc that has the brake hole, the brake disc is located on the wheel, and the rotatable cover of pedal pivot is located on the main shaft, be fixed with the sleeve in the pedal pivot, be equipped with the brake pin in the connector, the brake pin includes the brake cap, be equipped with flexible brake lever in the brake cap, be equipped with first elastic component between brake cap and flexible brake lever, be equipped with the second elastic component between brake cap and post hole, the pedal pivot drives the sleeve and rotates, and the sleeve promotes the brake pin and inserts or breaks away from the brake hole. The utility model discloses a thereby pedal pivot realize that the brake round pin inserts in or breaks away from the downthehole brake state or the state of separating to stop of realizing the handcart of brake, simple structure, low in manufacturing cost, convenient to use.

Description

Rear wheel brake mechanism of handcart

Technical Field

The utility model relates to a handcart technical field, specifically speaking relate to a rear wheel brake mechanism of handcart.

Background

The rear wheel braking mechanism of similar prior art carts is disclosed in the following patent documents.

Chinese patent specification CN 113276932A (published in 20/08/2021) discloses a cart, which comprises a cart frame, a wheel assembly, and a brake mechanism with braking and braking states, wherein the cart frame comprises a push rod assembly and a push handle slidably disposed on the push rod assembly, the cart further comprises a drive mechanism, the drive mechanism comprises a drive member and a flexible connecting member disposed on the push handle, one end of the flexible connecting member is connected with the brake mechanism, when the push handle slides relative to the push rod assembly, the drive member is driven to synchronously slide relative to the push rod assembly, the flexible connecting member passes around the drive member and is located on a sliding path of the drive member, or the other end of the flexible connecting member is disposed on the drive member, and the flexible connecting member moves along with the sliding of the drive member. When the push handle is held by hands of a hand and rotated, the brake mechanism can be released, and the cart can move forward or backward freely.

However, the brake mechanism disclosed above brakes by holding the push handle, and has a complicated structure and relatively high manufacturing cost.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a rear wheel brake mechanism of handcart to there is the structure complicacy in the rear wheel brake mechanism of handcart among the overcome prior art, the relatively higher defect of manufacturing cost.

In order to solve the technical problem, the utility model discloses a rear wheel brake mechanism of handcart, which comprises a vehicle rack, the connected to the frame connector, be fixed with the main shaft on the connector, the wheel is rotatory on the main shaft, still including the brake disc that has the brake hole, the brake disc is located on the wheel, and the rotatable cover of pedal pivot is located on the main shaft, be fixed with the sleeve in the pedal pivot, be equipped with the brake pin in the connector, the brake pin sets up in the brake cap of post hole including the activity, be equipped with flexible brake lever in the brake cap, be equipped with first elastic component between brake cap and flexible brake lever, be equipped with the second elastic component between brake cap and post hole, pedal pivot drives the sleeve and rotates, and the sleeve promotes the brake pin and inserts or break away from the brake hole.

The sleeve is provided with a ring body, the ring body is provided with a notch, a pushing body is arranged on the notch, the notch and the pushing body form a high point and a low point, when the brake cap is positioned at the high point, the brake pin is inserted into the brake hole, and when the brake cap is positioned at the low point, the brake pin is separated from the brake hole.

The brake cap is provided with a track opening, and the sliding rod of the telescopic brake rod moves on the track opening.

The connector is provided with a column hole, the column hole comprises a telescopic brake rod hole and a brake cap hole, and the telescopic brake rod hole is smaller than the brake cap hole.

The connecting head is provided with a limiting column, and the limiting column is inserted into a limiting hole of the sleeve.

Wherein, the brake disc is clamped on the spoke of the wheel.

And a bearing is arranged between the brake disc and the main shaft.

The brake disc comprises a main annular disc and an auxiliary annular disc, shaft holes used for mounting bearings are formed in the middle of the main annular disc and the middle of the auxiliary annular disc, spoke grooves matched with spokes are formed in the front face of the main annular disc, and a plurality of brake holes are formed in the front face of the auxiliary annular disc in an annular mode.

Wherein, the first elastic component is a first spring.

Wherein, the second elastic piece is a second spring.

Compared with the prior art, the beneficial effects of the utility model are that thereby realize through pedal pivot that the brake round pin is inserted or break away from the downthehole brake state or the state of separating the brake that realizes the handcart of brake, simple structure, low in manufacturing cost, convenient to use.

Drawings

Fig. 1 is a schematic perspective view of the cart of the present invention;

fig. 2 is a first partially exploded view of the cart of the present invention;

fig. 3 is a second partially exploded view of the cart of the present invention;

fig. 4 is a third partially exploded view of the cart of the present invention;

fig. 5 is a fourth partially exploded view of the cart of the present invention;

fig. 6 is a schematic structural view of the sleeve of the present invention;

FIG. 7 is a schematic cross-sectional view of the brake pin of the present invention;

fig. 8 is a first partially sectioned structural schematic view of the trolley of the invention;

fig. 9 is a second enlarged partial cross-sectional view of the cart of the present invention;

fig. 10 is a first partial use configuration of the cart of the present invention;

fig. 11 is a second partial usage state of the cart according to the present invention.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

The handcart of this embodiment is as shown in fig. 1-9, including frame 2 that has front wheel 1, the frame both sides are connected with

connector

3, 4 respectively, be fixed with main shaft 5 on the connector, handcart still includes brake disc 7 that has brake aperture 6, the brake disc is located on wheel 8, promptly the brake disc card is located on the spoke 9 of wheel. A bearing 10 is arranged between the brake disc and the main shaft, the wheel rotates on the main shaft through the bearing, and the rotation of the wheel on the main shaft is guaranteed due to the arrangement of the bearing. The brake disc includes by main annular disc 11, vice annular disc 12, and the middle part of main annular disc, vice annular disc is equipped with the shaft hole 13 of being convenient for installation bearing, main annular disc openly is equipped with the spoke groove 14 that matches with the spoke, and the cooperation of spoke groove and spoke has guaranteed that the firm card of brake disc is located on the wheel, the positive annular of vice annular disc all is equipped with a plurality of brake holes, and the setting of a plurality of brake holes can guarantee that the wheel of not lun can keep staying the brake hole all the time to arbitrary position and supply the brake pin to insert. The rotatable cover of pedal pivot 15 is located on the main shaft, be fixed with sleeve 16 in the pedal pivot, the sleeve has ring 18, the ring has breach 19, be equipped with on the breach and push away body 20, the breach, push away the body and constitute high point 21, low point 22, when the brake cap is located the high point, the brake pin is inserted in the brake hole, when the brake cap is located the low point, the brake pin breaks away from the brake hole. The brake pin 23 is arranged in the connector, namely the brake pin is positioned in a column hole 24 in the connector, the column hole comprises a telescopic brake rod hole 26 and a brake cap hole 27, and the telescopic brake rod hole is smaller than the brake cap hole. The brake pin comprises a brake cap 25 moving in a brake cap hole, a telescopic brake rod 28 is arranged in the brake cap, the telescopic brake rod can move back and forth from the telescopic brake rod hole, the brake cap is provided with

track ports

29 and 33, a slide rod 30 of the telescopic brake rod moves on the track ports, and the slide rod and the track ports are used for limiting the moving range of the telescopic brake rod. A first spring 31 is tightly abutted between the brake cap and the telescopic brake rod, a second spring 32 is tightly abutted between the brake cap and the column hole, the pedal rotating shaft drives the sleeve to rotate, and the sleeve pushes the brake pin to be inserted into or separated from the brake hole. The connecting head is provided with

limiting columns

35 and 36 which are inserted into limiting

holes

37 and 38 of the sleeve, and the limiting holes in the sleeve can move back and forth only within the angle range of the limiting columns, so that high points and low points on the sleeve can push the brake pin back and forth, and the brake state or the brake release state is realized.

As shown in fig. 10 and 11, when the cart needs to be braked, the pedal rotating shaft rotates downwards, the pedal rotating shaft rotates on the connecting head and drives the sleeve to rotate, the brake pin on the connecting head is immediately pushed by the sleeve, namely, the pushing body on the sleeve pushes the brake cap on the brake pin until the brake cap reaches a high point 21, the brake cap pushes the telescopic brake rod through the first spring, and the telescopic brake rod is inserted into the brake hole to realize braking; the pedal rotating shaft rotates upwards, the pedal rotating shaft drives the sleeve 16 to rotate while rotating on the connecting head, the brake pin on the connecting head is pushed by the sleeve immediately, namely the pushing body on the sleeve pushes the brake cap on the brake pin until the brake cap reaches a low point 22, the brake cap 25 is influenced by the resilience force of the first spring 31 and the second spring 32, and the telescopic brake rod 28 is reset to be separated from the brake hole 6 to realize brake release.

This embodiment realizes through pedal pivot that the brake round pin is inserted or breaks away from the downthehole brake state or the state of separating to stop of realizing the handcart in the brake hole, simple structure, low in manufacturing cost, convenient to use.

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 improvements and embellishments can be made without departing from the technical principle of the present invention, and these improvements and embellishments should also be regarded as the protection scope of the present invention.

Claims

1. A rear wheel brake mechanism of a handcart comprises a handcart frame, the handcart frame is connected with a connector, a main shaft is fixed on the connector, a rear wheel rotates on the main shaft,

the method is characterized in that: still including the brake disc that has the brake hole, the brake disc is located on the wheel, and the rotatable cover of pedal pivot is located on the main shaft, be fixed with the sleeve in the pedal pivot, be equipped with the brake pin in the connector, the brake pin is including the brake cap, be equipped with flexible brake lever in the brake cap, be equipped with first elastic component between brake cap and flexible brake lever, be equipped with the second elastic component between brake cap and post hole, the pedal pivot drives the sleeve and rotates, and the sleeve promotes the brake pin and inserts or break away from the brake hole.

2. A rear wheel brake mechanism for a hand truck according to claim 1, further comprising: the sleeve is provided with a ring body, the ring body is provided with a notch, a pushing body is arranged on the notch, the notch and the pushing body form a high point and a low point, when the brake cap is positioned at the high point, the brake pin is inserted into the brake hole, and when the brake cap is positioned at the low point, the brake pin is separated from the brake hole.

3. A rear wheel brake mechanism for a hand truck as claimed in claim 1, wherein: the brake cap is provided with a track opening, and the sliding rod of the telescopic brake rod moves on the track opening.

4. A rear wheel brake mechanism for a hand truck as claimed in claim 1, wherein: the connector is provided with a column hole, the column hole comprises a telescopic brake rod hole and a brake cap hole, and the telescopic brake rod hole is smaller than the brake cap hole.

5. A rear wheel brake mechanism for a hand truck according to claim 1, further comprising: the connecting head is provided with a limiting post, and the limiting post is inserted into a limiting hole of the sleeve.

6. A rear wheel brake mechanism for a hand truck as claimed in claim 1, wherein: the brake disc is clamped on spokes of the wheel.

7. A rear wheel brake mechanism for a hand truck as claimed in claim 6, wherein: and a bearing is arranged between the brake disc and the main shaft.

8. A rear wheel brake mechanism for a hand truck as claimed in claim 7, wherein: the brake disc comprises a main annular disc and an auxiliary annular disc, wherein shaft holes for mounting bearings are formed in the middle of the main annular disc and the middle of the auxiliary annular disc, spoke grooves matched with spokes are formed in the front face of the main annular disc, and a plurality of brake holes are formed in the front face of the auxiliary annular disc in an annular mode.

9. A rear wheel brake mechanism for a hand truck as claimed in claim 1, wherein: the first elastic piece is a first spring.

10. A rear wheel brake mechanism for a hand truck according to claim 1, further comprising: the second elastic piece is a second spring.