TWM251749U - Improved structure for caster - Google Patents

Description

M251749

4. Description of creation (l) [Technical field to which the new type belongs] Especially a kind of caster structure that uses elastic threads and has a variety of shapes to create a caster structure that is bent into a wheel seat for pivoting a roller , The effect of shock absorption and reduce manufacturing costs. [Prior technology] I see the casters, as shown in Figure 7, the wheel seat 7 of the attachment, the wheel seat γ is used to pivot a roller 7 1, a bearing 7 2 is fixed, The bearing 7 2 is provided-the shaft wheel seat 7 The shaft 7 3 is fixed on the foot of a chair and the like, and the 2 3 is installed, and the .AK slides and moves.

Since the wheel base 7 of the caster is made of metal, it is made in the mold, and then it is made by stamping. Therefore, the shape of the caster must be changed first, and the shape cannot be easily changed, and the meaning must be limited to the cost of the mold. ] ° Pulling tools to increase the wheel seat 7 series casters can not be damaged by another kind of plastic casters, and both ends of 1 are for pivoting a roller 8 8 on each side and a pivoting part 8 3, 4 are fixed to 8 during production, so its shape and body are not elastic, so when it is pressed or impacted, it is easy to cause the caster shaft 8 4. By the caster 8 because the caster's wheel seat is formed by injection molding It can be made into a shape in a way that does not have the effect of being transportable to shocks. As shown in Figure 8: It is equipped with a car part 8 1, the shaft part ^ ', and the wheel seat 8 in the South Korea. The trailing portion 8 3 is a foot portion for Shuyi 1 child and the like. Japan can also open a mold first, ^ body shape is still limited by the mold a to change the shape, you must change

Page 5 M251749 IV. Creative Instructions (2) The design of the tool will not only increase the cost of mold opening, but also increase the cost of manufacturing. Moreover, the wheel base 8 of the caster is also not elastic, and it also cannot achieve the effect of shock absorption. · Therefore, it is necessary to improve the shape caused by the structure of the conventional casters, the manufacturing cost and the lack of avoidance effect. [New content] The main purpose of this creation is to solve the above problems and provide an improved caster structure, which mainly has a wheel seat bent from an elastic wire, the wheel seat bent from the elastic wire has a A hollow fixing part is provided for pivoting a shaft in the fixing part, and the wheel base is provided with a flexible rod at the H :: bow of the fixed one, and a stomach supporting rod is provided for pivoting a cymbal roller. Strength and rigidity = ΐ is made by bending the elastic wire. The elastic wire itself has a proper elasticity and is bent to pivotally connect the fixed part of the shaft and the support rod. , So that the wheel seat can support the weight and have the shock of the original creation of the cold—the purpose is that the wheel seat is Mu Mu 1 ,, disc) ^ Μ 』丄 is bent to form the required γ A f Connected with the shape of the elastic wire 'without having to use a mold to stab you —, the hair and design mold & ro L Yagi clothes can save the cost of creating a copy of the book — α tpk < Dan—The purpose is that the wheel seat is made of η 2-UL A, so the wheel life 1, f Μ is made of bent wire. Look at the first embodiment of Figure A to Figure 3. The illustration is the first embodiment of A. This is for illustration only. It is only used for the creation of 2 creations.

Page 6 M251749 IV. Restrictions on Creation Instructions (3). This creation is an improvement of the caster structure, which mainly has a wheel seat 1 made by bending an elastic wire. In this embodiment, the elastic wire is spring steel, and the wheel seat 1 is bent by the elastic wire. A hollow ring-shaped fixing portion 1 1 is provided for pivoting a shaft 2. In this embodiment, a fixing sleeve 2 1 is welded to the fixing portion 11 and the sleeve 2 1 is provided for welding. The shaft 2 is pivoted at one end, and the other end of the shaft 2 is fixed to the foot of a chair or the like, and the wheel base 1 is bent downwards on both sides of the fixed portion 11 with the elastic wire. A support rod 12 is provided for pivoting between the support rods 12

A roller 3, in this embodiment, the ends of each of the supporting rods 12 are respectively bent into a circle portion 1 2 1 for a pivot 3 1 to extend through, and the roller 3 is pivoted because the wheel seat 1 It is made by bending the elastic wire. The strength and rigidity of the elastic wire itself are sufficient, and it is bent to have a proper elasticity between the fixed portion 1 1 and the two support rods 12 of the shaft 2 to make the wheel. The base 1 can support weight and has the effect of shock absorption.

In addition, the wheel base 1 is directly formed by bending an elastic wire without the use of a mold, which can save the cost of developing and designing the mold, and can relatively reduce the manufacturing cost. In addition, since the wheel base 1 is formed by bending an elastic wire, the shape of the wheel base 1 can be easily bent and changed, as shown in FIG. 4, which is the second embodiment of this creation, in which the A middle portion of the support rod 1 2 of the wheel seat 1 bis bends a decorative portion 1 3 1 respectively. In this embodiment, the shape of the decorative portion 1 3 1 is semicircular.

Page 7 M251749 IV. Creation instructions (4) The shape of the decorative part 1 31 makes the overall shape of the wheel seat 1 more varied, thereby increasing the visual beauty, and the semi-circular decorative part 1 ^ 1 can make the supporting rod 13 more elastic, and make the wheel seat 1 more shock-absorbing. > In addition, the wheel seat can also be designed to have a shock-absorbing effect at the fixed portion. As shown in FIG. 5, it is a third embodiment of this creation, in which the fixed portion 14 of the wheel seat 1 is composed of The elastic wire is bent into several loops, and a shaft sleeve 2 2 is fixed in the middle of the fourteen loops of the fixed housing for the shaft 2 — # Γ⑷. Code pivot

By bending the fixing portion 14 into several loops, the fixing portion has elasticity, and the overall shock absorption effect of the caster is better. In the foregoing embodiment, as a matter of course, the caster can also be a fourth embodiment pivoted by a supporting rod, in which one side of the wheel base 1 1 is bent downward to a supporting rod and then horizontally folded into a horizontal rod 1 51, pivoting, it can also achieve the effect of pivoting the rollers to change the shape and the suspension temple. The roller is pivoted by two supporting rods. As shown in FIG. 6, it is the original 1 with the elastic wire on the fixed portion 15, the end of the supporting rod 15 and the crossbar 1 5 1 are provided for the roller 3 The purpose of 3 is also variable. In each of the foregoing embodiments, the elastic wire is integrally bent to fold out the fixed portion, and then another elastic rod is welded under the fixed portion, which has the same effect. 0 The wheel seat The fixing portion is formed with the support rod. Of course, the elastic rod can be used to bend the support rod to bend the support rod, and the support standard can be used for transforming, forming, and absorbing shocks. It is not used for the disclosure of the embodiments described above. Used to illustrate this creation

M251749 Brief description of the diagram. The first picture is the three-dimensional appearance of the first embodiment of the present invention. The second picture is the three-dimensional exploded view of the first embodiment of the present invention. The third picture is the first embodiment of this creation. 4 Figure is an exploded perspective view of the second embodiment of the present invention. Figure 5 is a side view of the third embodiment of the present invention. Figure 6 is an exploded view of the fourth embodiment of the present invention. Figure 7 is a schematic view of a conventional metal caster. Figure 8 is a schematic diagram of conventional plastic casters [Description of drawing number] (conventional part) Wheel seat 7 Roller 7 1 Bearing 7 2 Shaft 7 3 Wheel seat 8 Shaft 8 1 Roller 8 2 Only the joint 8 8 Shaft 8 4 (This creative part) Wheel base 1 Fixing part 1 1 、 1 4 Support bar 1 2% 1 3 、 1 5 Ring part 1 2 1 Decorative part 1 3 1 Cross bar 1 5 1 Shaft 2 Bushing 2 1 bushing 2 2 roller 3 frame shaft 3 1

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Claims (1)

M251749 5. The scope of the patent application is to improve the caster structure, which mainly has a wheel seat bent from an elastic wire. The wheel seat is bent from the elastic wire and has a hollow fixed part. The fixing part is provided in the fixed part. A shaft is pivotally provided, and the wheel base is bent downward with a support rod at the side of the fixed portion with the elastic wire, and the gift rod is provided for pivoting a roller. According to the improvement of the caster structure described in Item 1 of the scope of the patent application, the fixed part of the wheel seat in the bean is a hollow ring. Among them, a bushing is welded to the T series for one end of the shaft. The other end is for fixing on the feet of chairs. 4 6 7 The caster structure is improved according to item 1 of the scope of the patent application, wherein the wheel base is respectively bent downward by a support rod on the two sides of the fixed portion with the elastic wire, and the ends of each support rod are respectively bent Folded into a circle for the pivot to extend, and the roller is pivoted. _ The improvement of the caster structure described in item 1 of the Ming patent scope. In this case, the seat is bent with the elastic wire on one side of the fixed portion and supported downwards. The end of the support rod is then horizontally folded into a horizontal rod. The cross bar ^ is provided for pivoting the roller. 2 The caster structure improvement described in item 1 of the scope of the patent application, wherein the two fixed parts are bent by the elastic wire into several turns; fixed: a ring-shaped middle fixation-shaft sleeve, U for the shaft; hug; The structure improvement of the caster described in item 1 of the scope of the patent application, wherein the middle sections of the support rods of the wheel seat are respectively bent into a decorative part. / 、 17 According to the improvement of the caster structure described in item 6 of the main patent of Φ% above, the shape of the corrugated part is semi-circular. ’, Page 11 ------