TWM525860U - Caster structure with automatic homing - Google Patents

Description

Caster structure with automatic homing

This creation is about a caster, especially a caster structure with automatic homing.

According to the conventional caster structure, although the functional requirements of carrying carts or bed sets can be achieved, but due to the disadvantages of its structure, many practical defects are derived, because the conventional casters do not have an oriented structure. The characteristics of the casters make the casters easy to shake when they are traveling, and they are more likely to be biased, and it is difficult to maintain straight travel, which may cause the loaded articles to fall, or cause discomfort to the carrying personnel, and cause the operator to bear the burden of manipulation. Moreover, when the casters turn and turn, in addition to being easy to shake, it will cause partiality and difficulty in maintaining balance, and it is difficult to operate. It is also necessary to apply force to return the casters to the correct position. It is more laborious and inconvenient to use, and the use of the casters is actually lacking. By.

In view of this, the creator has been engaged in the manufacturing development and design experience of related products for many years. After detailed design and careful evaluation, the author has finally achieved a practical and practical creation.

The technical problem to be solved by the present invention is to provide a caster structure with automatic homing in view of the above-mentioned shortcomings existing in the prior art.

A caster structure with an automatic homing, comprising: a base, a bracket, a limiting member and a limiting outer cover, wherein a bearing portion is fixed at a center of the base, and a bracket is provided through the bearing portion a bracket has a body and two combined arms symmetrically and parallelly extending from the seat body, the seat body has a bearing sleeve hole to fit through the bearing portion, and the two combined arms provide the wheel body installation, and a limit position The member is fixed on the end of the bearing portion, the limiting member is formed in an elliptical shape to form a circular arc guiding surface at the periphery, and the limiting concave portion is symmetrically disposed at the center of the long side of the circular arc guiding surface, and a limiting outer cover has a The cover body is fixed to the bearing sleeve hole of the bracket, and a connecting pipe portion is respectively disposed on both sides of the cover body, and an abutting member and an elastic member are disposed in the connecting pipe portion, and a stop screw is respectively provided The lock is disposed at the end of the connecting pipe portion, thereby restricting the abutting member and the elastic member to the connecting pipe portion, so that the abutting member protrudes from the cover body and abuts against the limiting member, and the structure is configured to form a device Automatic homing caster structure.

Compared with the effect of the prior art: the caster of the present invention provides the abutment of the top cover of the limit cover through the limiting member, and the limit member has a circular arc guide surface and is provided with two limit recesses, so that the second topping When the piece is pushed by the elastic member, it will be embedded in the limit recess to form a position, and the caster will be in a straight traveling state. When the caster turns, the seat will be disengaged from the limit recess and the elastic member will be compressed, and after the steering is relaxed, the top member will be abutted. After being pushed out by the elastic member, the limit recess is introduced along the arc guide surface, and the bracket is automatically rotated to return to the position, which not only can be promoted in a relatively labor-saving manner, but also can prevent the left and right yaw of the caster from being difficult to control, and greatly enhance the caster travel. Stability, both practical.

10‧‧‧ Pedestal

11‧‧‧ Bearing Department

111‧‧‧Perforation

112‧‧‧ screw holes

20‧‧‧ bracket

21‧‧‧ body

211‧‧‧ bearing sleeve hole

212‧‧‧Inlay

213‧‧‧Lock hole

214‧‧‧Locks

22‧‧‧Combined arm

23‧‧‧ wheel body

30‧‧‧Limited parts

31‧‧‧Axis

32‧‧‧With holes

321‧‧‧Locks

33‧‧‧Arc guide

34‧‧‧Limited recess

40‧‧‧Limited cover

41‧‧‧ Cover

42‧‧‧Withholding department

43‧‧‧Connected Pipe Department

44‧‧‧After the top piece

45‧‧‧Flexible parts

46‧‧‧stop screws

Figure 1: This is a perspective view of the creation.

Figure 2: This is an exploded view of the creation.

Figure 3: A cross-sectional view of the combination of the creations.

Figure 4: A cross-sectional view of the combined perspective of another aspect of the creation and a schematic diagram of the positioning state.

Figure 5: This is a schematic diagram of the left and right swing state of the creation.

Figure 6: This is the state of actual use of the creation.

In order to enable your review committee to have a better understanding and understanding of the purpose, characteristics and efficacy of this creation, please refer to the following [Simplified Description of the Drawings] for details: First, please refer to Figures 1 and 2 below. A caster structure with an automatic homing, comprising: a base 10, a bracket 20, a limiting member 30 and a limiting outer cover 40, wherein a bearing portion 11 is fixed at a center of the base 10, The upper end portion of the bearing portion 11 is provided with a through hole 111 and two screw holes 112, and is provided with a bracket 20 through the bearing portion 11. The bracket 20 has a body 21 and two engaging arms 22 extending symmetrically and parallel from the seat body 21, The seat body 21 has a bearing sleeve hole 211 and is sleeved on the bearing portion 11. The second coupling arm 22 provides the wheel body 23 for mounting. The limiting member 30 has a shaft portion 31 and two through holes 32 for transmitting through the shaft portion. The through hole 111 is inserted into the through hole 111 of the bearing portion 11 , and the second locking member 321 is locked and fixed to the screw hole 112 through the through hole 32 , and the limiting member 30 is formed in an elliptical shape to form a circular arc guide surface 33 at the periphery. Further, a limit recess 34 is symmetrically arranged at the center of the long side of the arc guide surface 33. The cover 40 has a cover 41 fixed to the bearing sleeve hole 211 of the bracket 20, and the limiting cover 40 is further provided with two fastening portions 42 for locking and fastening to the outside of the seat 21 of the bracket 20, and the bracket 20 is fixed. The seat body 21 is provided with a second fitting portion 212 on the side of the symmetrical side for the locking of the two fastening portions 42 , and the second fitting portion 212 is further provided with a locking hole 213 for providing the locking member 214 through the fastening. The portion 42 is locked and fixed to the locking hole 213, and a connecting tube portion 43 is disposed on each side of the cover body 41. An abutting member 44 and an elastic member 45 are disposed in the connecting tube portion 43 respectively, and respectively The stop screw 46 is locked at the end of the connecting pipe portion 43, The abutting member 44 and the elastic member 45 are restricted to the communicating tube portion 43 such that the abutting member 44 projects from the inside of the cover 42 and abuts against the limiting member 30.

For the structure of the structure, as shown in the figures 1, 2, 3 and 4, the base 10 is provided with the bracket 20 through the bearing portion 11 and assembled by the sleeve of the bearing sleeve hole 211 of the seat body 21, so that the base 10 is assembled. The position of the stopper member 30 is rotated by the rotation of the bracket portion 20, and the through hole portion 31 is inserted into the through hole 111 of the bearing portion 11. The limiting member 30 is fixed to the bearing portion 11 , and finally the limiting outer cover 40 is assembled to the seat body 21 of the bracket 20 . The limiting outer cover 40 is fastened to the seat body 21 by the fastening portion 42 . The fitting portion 212 is further provided with a locking member 214 extending through the fastening portion 42 and the locking hole 213 of the fitting portion 212, thereby fixing the cover 41 to the bearing portion 11 and allowing the limiting member 30 to be received. In the cover body 41, the connecting pipe portion 43 on both sides of the limiting cover 40 is placed in an abutting member 44 and an elastic member 45, and a stop screw 46 is locked on the end of the connecting pipe portion 43 to The top piece 44 is pushed against the elastic member 45 to abut against the limiting member 30, and has a state of retracting displacement, which is described above to complete a caster structure with automatic homing.

For the actual use of the structure, please refer to FIG. 6 for the fourth and fifth figures. When the structure is installed, the mounting direction of the limiting recess 34 is the same as the linear traveling direction of the wheel body 23, and the limiting cover 40 is The connecting direction of the connecting pipe portion 43 is the same as the mounting direction of the wheel body 23 on the bracket 20. When the user pushes forward and travels straight, the abutting member 44 is abutted against the elastic member 45 and abuts forward. The limiting recess 34 of the limiting member 30 forms a limit to prevent the caster from yawing to the left and right to improve the stability of the straight travel. Otherwise, when the user wants to apply a force to turn to the left and right sides, the bracket 20 is supported by the base 10 Rotating upwardly, and causing the abutting member 44 to disengage from the limiting recess 34 against the circular arc guiding surface 33, while pressing the elastic member 45, at this time, the crucible can rotate to the left and right to change the traveling route, and when the user turns and When relaxed, the abutting member 44 is pushed out by the compressed elastic member 45 and introduced along the circular arc guide surface 33. The limiting recess 34 is formed to position, and at the same time, the bracket 20 is brought into a state of automatic swing returning, thereby recovering the straight traveler.

With the structure of the above specific embodiment, the following benefits can be obtained: the caster of the present invention provides the abutment of the top cover 44 by the limiting cover 40 through the limiting member 30, and the limiting member 30 has a circular arc guide. The surface 33 is provided with two limiting recesses 34, so that the two abutting members 44 are pushed by the elastic members 45 and are embedded in the limiting recesses 34 to form a linear traveling state of the casters. When the casters are turned, the limit is released. The recessed portion 34 compresses the elastic member 45, and after the steering is relaxed, the abutting member 44 is pushed out by the elastic member 45 to be introduced into the limiting recess 34 along the circular arc guiding surface 33, and the bracket 20 is automatically rotated to return to the position. It can not only promote the use in a more labor-saving way, but also avoid the difficulty of controlling the left and right yaw of the casters, greatly improving the stability of the caster travel, and having practicality.

In summary, this creation has indeed achieved a breakthrough structural design, with improved creative content, while at the same time achieving industrial use and progress, and this creation has not been seen in any publication, but also novel, when In accordance with the provisions of the relevant laws and regulations of the Patent Law, the application for the creation of a patent shall be filed according to law, and the examination of the member of the Bureau shall be granted a legal patent right.

Only the above-mentioned ones are only preferred embodiments of the present invention, and the scope of the implementation of the creation cannot be limited by them; that is, the equal changes and modifications made by the applicants in accordance with the scope of the patent application for this creation should still belong to the creation. Within the scope of the patent.

10‧‧‧ Pedestal

11‧‧‧ Bearing Department

111‧‧‧Perforation

112‧‧‧ screw holes

20‧‧‧ bracket

21‧‧‧ body

211‧‧‧ bearing sleeve hole

212‧‧‧Inlay

213‧‧‧Lock hole

214‧‧‧Locks

22‧‧‧Combined arm

23‧‧‧ wheel body

30‧‧‧Limited parts

31‧‧‧Axis

32‧‧‧With holes

321‧‧‧Locks

33‧‧‧Arc guide

34‧‧‧Limited recess

40‧‧‧Limited cover

41‧‧‧ Cover

42‧‧‧Withholding department

43‧‧‧Connected Pipe Department

44‧‧‧After the top piece

45‧‧‧Flexible parts

46‧‧‧stop screws

Claims (4)

A caster structure with an automatic homing, comprising: a base having a bearing portion fixed at a center thereof and a bracket joint through a bearing portion; a bracket having a body and two symmetrical and parallel extending from the seat body In combination with the arm, the seat body has a bearing sleeve hole to fit through the bearing portion, and the second coupling arm provides the wheel body installation; a limiting member is fixed at the end of the bearing portion, and the limiting member is An arc-shaped guide surface is formed in an elliptical shape, and a limit recess is symmetrically disposed at a center of the long side of the arc guide surface; a limit cover having a cover body and a cover fixed to the bearing sleeve hole of the bracket, and A connecting pipe portion is disposed on each side of the cover body, and an abutting member and an elastic member are disposed in the connecting pipe portion, and a stop screw is respectively provided at the end of the connecting pipe portion, and then the abutting member is And the elastic member is restricted to the connecting pipe portion, so that the abutting member protrudes from the cover body and abuts against the limiting member. The caster structure with automatic homing according to the first aspect of the patent application, wherein the upper end portion of the bearing portion is provided with a through hole and a second screw hole, and the limiting member has a shaft portion and two through holes, which are worn through the shaft portion. The perforation is provided in the bearing portion, and then the two locking members are fixed by the through hole and the screw hole. The automatic homing caster structure according to the first aspect of the patent application, wherein the limiting outer cover is further provided with two fastening portions for engaging and fixing the external body of the bracket. The caster structure with automatic homing according to Item 3 of the patent application scope, wherein the seat body of the bracket is further provided with a second fitting portion for the opposite side of the seat, so as to be limited by the buckle of the second fastening portion, and the second fitting portion Further, a locking hole is provided, and the locking component is provided through the fastening portion and the locking hole locking position.