TWI501893B - Orientation and positioning system for trolley - Google Patents

Description

Trolley orientation and positioning system

The present invention provides a brake system for a trolley, and more particularly to a brake system that allows a user to quickly and conveniently achieve orientation and positioning purposes.

Generally, when transporting a large amount of goods or sundries, in order to save manpower and speed up the completion, the trolley is usually used as an auxiliary. In order to better meet the needs of users, most of the trolleys are installed. There is an orientation device and a positioning device that causes the trolley to advance or retreat only in a single direction, and the positioning device is used to improve the braking capability of the trolley.

As shown in FIG. 1 , the conventional trolley has an elongated platform 11 and a four-legged wheel 12 respectively disposed at the four corner ends of the bottom of the platform 11. Each of the casters 12 is rotatably coupled through the top disk 121. On the platform 11, it is possible to transport a larger amount or a heavier cargo with less labor.

It should be noted that if the conventional trolley 10 is to be fixed in direction or braked, the user must individually step on the brakes 122 mounted on the tops of the casters 12 in order to orient the trolley 10 or to position the brakes. The user's inconvenience is caused; however, most of the conventional improvements are made to the orientation structure or the positioning structure of the caster 12 without solving the above problems. Therefore, the conventional trolley 10 is still insufficient to be improved.

In view of this, the inventors conceived and further studied and focused on The problem was improved and finally a trolley orientation and positioning system was invented.

The invention provides a positioning and positioning system for a trolley, the main purpose of which is to enable a user to quickly orient or position the trolley without the need to repeatedly act to individually press the brakes mounted on the top ends of the casters.

To achieve the foregoing objective, the present invention provides a positioning and positioning system for a trolley, comprising: a trolley body, a base assembled by the object, at least a certain wheel set and a plurality of positioning wheel sets disposed on the base; At least a certain unit is disposed on the directional wheel set. When the directional unit is actuated, the directional wheel set cannot be rotated relative to the base, so that the trolley cannot change the displacement direction, but can only be displaced in a single direction; The positioning unit is disposed on each of the positioning wheel sets, and the positioning wheel set is not capable of rolling displacement when activated; and a control unit is disposed on the base, the control unit comprises: a first control component and a second control component The first control unit is connected to the directional unit by a linkage module, and the directional unit is actuated. The second control unit is connected to each positioning unit by the linkage module, and each positioning unit is actuated.

The invention connects the first control component and each of the orientation units by the linkage module, so that the user can operate all the orientation units only by operating the first control component; likewise, the invention uses the linkage mode The group connects the second control member and each of the positioning units, so that the user can operate all the positioning units only by operating the second control member; thereby, the user can quickly Trolley orientation or positioning.

The present invention has been described in connection with the preferred embodiments of the present invention in accordance with the accompanying drawings.

Before the present invention is described in detail, it is noted that in the following description, similar elements are denoted by the same reference numerals.

In order to enable the reviewing committee to have a better understanding and understanding of the purpose, features and effects of the present invention, please refer to the following [detailed description of the drawings] for details: the preferred implementation of the orientation and positioning system of the trolley of the present invention. For example, as shown in FIG. 2 to FIG. 9 , the utility model comprises: a trolley body 2 , two orientation units 3 , two positioning units 4 and a control unit 5 , wherein: the trolley body 2 is a base 21 assembled by the object. The directional wheel set 22 and the two locating wheel sets 23 are formed by a fixed caster 221 and a first guide 222. The directional caster 22 can be opposite to the first guide 222. The base 21 is rotatably disposed at the front end of the bottom of the base 21. The positioning wheel set 23 is formed by a positioning caster 231 and a second guide 232. The positioning caster 23 is assembled on the base by the second guide 232. a rear end of the bottom portion of the 21; each of the orientation units 3 is disposed on the directional wheel set 22, including a card a plate 31 and a protrusion 32 formed in the first guide plate 222. The clamping plate 31 is located on the upper side of the protrusion 32, and a groove 311 is formed on the clamping plate 31 corresponding to the protrusion 32. When the directional unit 3 is actuated, the protrusion 32 is embedded in the groove 311, so that the directional wheel set 22 cannot rotate relative to the base 21, thereby making the trolley body 2 unable to change the displacement direction when displaced, and only The positioning unit 4 is disposed on the positioning wheel set 23 and includes a brake piece 41 mounted in the second guide plate 232. The brake shoe 41 is located above the positioning caster 231. When the positioning unit 4 is actuated, the brake shoe 41 is pressed against the positioning caster 231 to increase the frictional force of the trolley body 2 during displacement, thereby preventing the trolley body 2 from being displaced; and the control unit 5 includes: a first control member 51, a second control member 52, a third control member 53 and a linkage module 54, wherein the first control member 51 and the second control member 52 are formed with a locking groove 511, 521 The actuating portion is rotatably mounted through a first pivot post 211 fixed to the base 21. On the side of the base 21, the third control member 53 is rotatably mounted on the same side of the base 21 by a second pivot post 212 fixed to the base 21, and the first control When the member 51 and the second control member 52 are actuated, an active block 556, 557 of the first actuating lever 55 of the linkage module 54 is pushed through a pushing portion 512, 522, the first control member 51 and the The second control member 52 abuts against a clamping elastic piece 24 of the base 21 at the periphery of the locking grooves 511 and 521 The locking protrusion 241 is used as a locking portion of the first control member 51 and the second control member 52. The other end of the locking elastic piece 24 is fixed to the base 21 The first actuating lever 55 is a hexagonal cylinder, which may be another multi-corner cylinder. The two ends of the first actuating lever 55 are connected to one end of a positioning pressing rod 553 by a first pressing block 552. One end is disposed in the positioning wheel set 23 and connected to the brake shoe 41, and has a conical compression spring 554 on the positioning pressing rod 553. The first actuating lever 55 is connected by a first connecting member 555. a buffering rod 561 is disposed on the connecting rod 56, and a buffer rod 562 is disposed in the buffering portion 561. The buffer rod 562 is coupled to a second actuating rod 57 via a second connecting member 574. When the first actuating lever 55 is actuated, the second actuating lever 57 is simultaneously actuated. The second actuating lever 57 is a hexagonal cylinder, which may also be other polygonal cylinders, and the two ends thereof are respectively subjected to a second pressure. The block 571 is connected to one end of the pressing rod 572. The other end of the directional pressing rod 572 is disposed on the directional wheel set 22 and the clamping plate 31. And the directional pressing rod 572 has a conical compression spring 573, and the third control member 53 is provided with a pressing portion 531. When the third control member 53 is actuated, the pressing portion 531 is pressed against the card. The spring piece 24, the first control member 51, the second control member 52 and the third control member 53 are each provided with a return spring 513, 523, 532, and the return springs 513, 523, 532 are respectively sleeved on Each of the return springs 513, 523, 532 on the first pivot post 211 and the second pivot post 212 abuts against the base 21 at one end, and the other end abuts against the first control member 51. The second control member 52 and the third control member 53 enable the first control member 51, the second control member 52, and the third control member 53 to return to their original positions when they are not engaged.

The above description is the main components of the embodiment of the present invention and their configuration description.

As for the usage mode and the function of the embodiment of the present invention, please refer to FIG. 4 to FIG. 9 , which shows that the control unit 5 , the orientation unit 3 and the positioning unit 4 of the present invention are not yet activated, wherein FIG. 5 For the first control member 51, the pushing portion 512 is not in contact with the driving block 556, and the locking protrusion 241 on the locking elastic piece 24 is only pressed against the lower side of the first control member 51; 6 is a cross-sectional view of the second control member 52. The pushing portion 522 is only attached to the active block 557. The locking protrusion 241 also abuts against the lower side of the second control member 52 and is not stuck to the card. FIG. 7 is a side view of the third control member 53. It can be seen that the pressing portion 531 is not in contact with the locking elastic piece 24; FIG. 8 is a side sectional view of the trolley body 2. The first pressing block 552 and the second pressing block 571 are respectively fixed on the first actuating lever 55 and the second actuating lever 57, and are not yet in contact with the positioning pressing rod 553 and the directional pressing rod 572. The brake shoe 41 is not in contact with the positioning caster 231. Please refer to FIG. 9 again, and the groove 311 on the clamping plate 31 is not pressed down to the first The bump 32 in the guide plate 222.

Referring to FIG. 10, this shows the state when the first control member 51 is actuated. The first control member 51 is clockwise with the first pivot post 211 as an axis. When the needle is rotated, the return spring 513 is compressed and the elastic potential energy is accumulated, and the locking groove 511 of the first control member 51 is engaged with the locking protrusion 241 of the clamping elastic piece 24, and the pushing portion 512 is caused. Pushing the active block 556, the active block 556 rotates counterclockwise with the first actuating lever 55 as an axis, and simultaneously drives the first actuating lever 55 to rotate counterclockwise, the first actuating lever 55 The first connecting member 555 drives the linkage rod 56 to displace the linkage rod 56 in the direction of the first actuation rod 55, and the linkage rod 56 drives the second actuation rod 57 counterclockwise by the second connecting member 574. Rotating; refer to FIG. 11 and FIG. 9 , when the first actuating lever 55 rotates counterclockwise, the first pressing block 552 is also rotated counterclockwise, and the positioning pressing rod 553 is pressed downward. The compression spring 554 stores an elastic potential energy. At this time, the brake shoe 41 has not been in contact with the positioning caster 231. When the second actuation lever 57 rotates counterclockwise, the second pressure block 571 is also rotated counterclockwise. And pressing the directional pressing rod 572 downward, so that the compression spring 573 stores an elastic potential energy, and The groove 311 of the clamping plate 31 is embedded in the protrusion 32, whereby the positioning wheel set 23 cannot rotate relative to the base 21, so that the trolley body 2 cannot change the displacement direction, but can only be displaced in a single direction. .

Referring to FIG. 12, this shows the state when the second control member 52 is actuated. When the second control member 52 rotates clockwise with the first pivot post 211 as an axis, the return spring 523 is compressed and accumulated. Elastic potential energy, and the locking groove 521 of the second control member 52 and the locking protrusion of the locking elastic piece 24 The 241 is phase-locked, and the pushing portion 522 is pushed against the driving block 557, whereby the driving block 557 rotates counterclockwise with the first actuating lever 55 as an axis, and simultaneously drives the first actuating lever 55 to reverse When the hour hand rotates, the first actuating lever 55 drives the linkage lever 56 with the first connecting member 555 to displace the linkage lever 56 in the direction of the first actuating lever 55, and the linkage lever 56 is driven by the second connecting member 574. The second actuating lever 57 rotates counterclockwise; it is worth noting that please refer to FIG. 5 and FIG. 6 in conjunction with FIG. 8 , because the pushing portion 512 of the first control member 51 is in the first control When the member 51 has not been actuated, there is still a small interval between the active block 556 and the pushing portion 522 of the second control member 52 directly abuts against the active block 557 when the second control member 52 has not been activated. When the second control member 52 is actuated, the arc of the active block 557 is rotated more than when the first control member 51 is actuated, thereby causing the positioning pressure bar 553 and the directional pressing rod 572 to be pressed down by a large amount; Referring to FIG. 13, when the first actuating lever 55 rotates counterclockwise, the first pressure will be driven. The 552 also rotates counterclockwise, and presses the positioning pressing rod 553 downward, so that the compression spring 554 stores an elastic potential energy, and the braking piece 41 is pressed against the positioning caster 231 to increase the displacement of the trolley body 2. The friction force causes the trolley body 2 to be displaced.

Referring to FIG. 14 and FIG. 10 to FIG. 13 , FIG. 14 shows a state when the third control member 53 is actuated, and the third control member 53 is clockwise with the second pivot post 212 as an axis. When rotating, the pressing portion 531 will The clamping elastic piece 24 is pressed downward, so that the locking protrusion 241 on the clamping elastic piece 24 is disengaged from the locking groove 511 of the first control member 51 or the locking groove 521 of the second control member 52, thereby The return springs 513, 523 release the elastic potential energy, so that the first control member 51 or the second control member 52 returns to the original position, and the compression springs 554, 573 also release the elastic potential energy, so that the linkage module 54 returns to the original position.

It is worth mentioning that the present invention may have a slight difference in appearance depending on the actual needs of the user. For example, as shown in FIG. 15, it is an embodiment having only a certain wheel set 22, thereby saving The cost of manufacturing can also achieve the purpose of allowing the user to quickly orient or position the trolley body 2B.

From the above, it is known that the present invention is indeed in line with "industry availability", "novelty", and "progressiveness", and proposes a new type of patent application according to law, praying for review and early granting of patents.

"Knowledge Technology"

10‧‧‧Trolley

11‧‧‧ platform

12‧‧‧ casters

121‧‧‧ dish

122‧‧‧煞车器

"this invention"

2, 2B‧‧‧Trolley body

21‧‧‧Base

211‧‧‧ first pivot

212‧‧‧Second pivot

22‧‧‧Director wheel set

221‧‧‧Director castors

222‧‧‧First guide

23‧‧‧ positioning wheel set

231‧‧‧ positioning casters

232‧‧‧Second guide

24‧‧‧Card shrapnel

241‧‧‧Card convex

3‧‧‧ orientation unit

31‧‧‧Card board

311‧‧‧ Groove

32‧‧‧Bumps

4‧‧‧ Positioning unit

41‧‧‧煞车片

5‧‧‧Control unit

51‧‧‧First control

511‧‧‧ card groove

512‧‧‧Promotion Department

513‧‧‧Return spring

52‧‧‧Second control

521‧‧‧Card groove

522‧‧‧Promotion Department

523‧‧‧Return spring

53‧‧‧ Third control

531‧‧‧Pushing Department

532‧‧‧Return spring

54‧‧‧ linkage module

55‧‧‧First actuating rod

552‧‧‧First briquettes

553‧‧‧ Positioning bar

554‧‧‧Compression spring

555‧‧‧First connector

556, 557‧‧‧ active block

56‧‧‧ linkage rod

561‧‧‧ buffer

562‧‧‧Bumper

Figure 1 is a partial perspective view of a conventional trolley.

Fig. 2 is a perspective view showing an embodiment of the present invention.

Figure 3 is a perspective view of another perspective of an embodiment of the present invention.

Figure 4 is a plan view of an embodiment of the present invention.

Fig. 5 is a cross-sectional view taken along line 4 of Fig. 4.

Fig. 6 is a cross-sectional view taken along line 4 of Fig. 4.

Figure 7 is a cross-sectional view taken along line 4 of Figure 4.

Figure 8 is a cross-sectional view taken along line 4 of Figure 4.

Figure 9 is a partial enlarged view of a directional wheel set according to an embodiment of the present invention.

Fig. 10 is a schematic view taken along line 4 of Fig. 4 when the first control member is actuated.

Figure 11 is a cross-sectional view taken along line 4 of Figure 4 when the first control member is actuated.

Fig. 12 is a schematic view taken along line 4 of Fig. 4 when the second control member is actuated.

Figure 13 is a cross-sectional view taken along line 4 of Figure 4 when the second control member is actuated.

Figure 14 is a cross-sectional view taken along line 4 of Figure 4 when the third control member is actuated.

Figure 15 is a plan view of another embodiment of the present invention.

2‧‧‧Trolley body

21‧‧‧Base

22‧‧‧Director wheel set

221‧‧‧Director castors

222‧‧‧First guide

23‧‧‧ positioning wheel set

231‧‧‧ positioning casters

232‧‧‧Second guide

5‧‧‧Control unit

51‧‧‧First control

52‧‧‧Second control

53‧‧‧ Third control

54‧‧‧ linkage module

55‧‧‧First actuating rod

56‧‧‧ linkage rod

561‧‧‧ buffer

562‧‧‧Bumper

57‧‧‧Second actuating rod

574‧‧‧Second connector

Claims (8)

A directional and positioning system for a trolley, comprising: a trolley body, a base assembled by the object, at least a certain wheel set and a plurality of positioning wheel sets disposed on the base; at least a certain unit is disposed at the On the directional wheel set, when the directional unit is actuated, the directional wheel set cannot be rotated relative to the base, so that the trolley can not change the displacement direction, but can only be displaced in a single direction; a plurality of positioning units are disposed at each of the positioning positions. And the control unit is disposed on the base, and the control unit comprises: a first control component, a second control component and a third control component, wherein the control unit comprises: The first control unit is connected to the directional unit by a linkage module, and the directional unit is activated when the first control unit is actuated, and the second control unit is connected to each positioning unit by the linkage module, the second control unit When the actuation is performed, each of the positioning units is actuated, and a limiting portion is formed on the first control member and the second control member, and a locking portion is formed on the base relative to the limiting portion. First control After the second control member is actuated, the limiting portion is positioned in the locking portion, thereby maintaining the orientation unit and the positioning unit in an active state, and the third control member is coupled to the locking portion, so that the When the third control member is actuated, the locking portion is disengaged from the first control member and the second control member, so that the first control member and the second control member return to an unactuated state. Orientation and positioning system of the trolley as described in claim 1 The first actuation member and the second control member are both connected to the first actuation rod, and the first actuation rod is coupled with a linkage rod by a first connecting member. The other end of the linkage rod is connected to a second actuating rod through a second connecting member, and when the first actuating rod is actuated, the second actuating rod is simultaneously actuated. The locating and positioning system of the trolley according to the second aspect of the invention, wherein the linkage rod further has a buffer portion, and a buffer rod is disposed in the buffer portion, and the buffer rod is used to transmit the second connection. The piece is coupled to the second actuating rod. The orientation and positioning system of the trolley of claim 2, wherein the first actuating lever is connected to each of the positioning units by a plurality of first pressing blocks, and the second operating rod is connected by at least one second pressing block. The orientation unit. The orientation and positioning system of the trolley of claim 2, wherein the first control member and the second control member both pass through a first pivot post fixed on the base to the first pivot The column is a shaft and is rotatably mounted on one side of the base. The orientation and positioning system of the trolley of claim 5, wherein the first control member and the second control member further have a pushing portion, and the first operating rod further has an active block. When the first control member and the second control member actuate, the active block is pushed through the pushing portion to rotate the first actuating lever. Orientation and positioning system of the trolley as described in item 2 of the patent application scope The first actuating lever and the second actuating lever are a polygonal cylinder. The orientation and positioning system of the trolley according to the first aspect of the invention, wherein the limiting portion is a locking groove formed on the first control member and the second control member, and the card is formed The part is a card-shaped protrusion, and the card is convexly formed on one end of a card-shaped elastic piece, and the card-shaped projectile is fixed on the base at the other end.