CN109813036B

CN109813036B - Pulley support leg device and refrigerator

Info

Publication number: CN109813036B
Application number: CN201711166400.XA
Authority: CN
Inventors: 刘秀宇; 胡达宏; 王浩; 张海星
Original assignee: Hefei Hualing Co Ltd; Midea Group Co Ltd; Hefei Midea Refrigerator Co Ltd
Current assignee: Hefei Hualing Co Ltd; Midea Group Co Ltd; Hefei Midea Refrigerator Co Ltd
Priority date: 2017-11-21
Filing date: 2017-11-21
Publication date: 2020-12-08
Anticipated expiration: 2037-11-21
Also published as: CN109813036A

Abstract

The invention relates to the field of living appliances, and discloses a pulley support leg device and a refrigerator, wherein the pulley support leg device comprises at least one group of trundles arranged on a box body, and each trundle comprises: the setting piece is fixed at the bottom of the box body; and the driving piece comprises a main body part movably arranged on the setting piece, an operating part arranged on the main body part and capable of being operated by a user, and a pushing part driven by the operating part to push the braking piece to move between a free position and a blocking position, so that the driving piece can be selectively arranged to rotate or be fixed relative to the setting piece, the moving requirement of the user can be met, meanwhile, the sliding can be reliably prevented, and the driving piece can be flexibly used in various occasions.

Description

Pulley support leg device and refrigerator

Technical Field

The invention relates to the field of household appliances, in particular to a pulley support leg device and a refrigerator.

Background

As a common electrical appliance in daily life, a refrigerator is generally provided with a fixing support leg or a roller at the bottom thereof for convenience of installation and installation in use or installation.

However, the common roller can only roll, and when the road surface is sloped or uneven, the refrigerator with the roller at the bottom is easy to displace, which brings inconvenience to the use of consumers. The common fixed support legs are difficult to meet the moving requirements of users. In addition, the leveling feet for enabling adjustment of the balancing support of the refrigerator also have the drawback of being difficult to meet the user's mobility needs.

Disclosure of Invention

The invention aims to overcome the problem that the prior art cannot reliably prevent the refrigerator from sliding while meeting the moving requirements of users, and provides a pulley support leg device which can reliably prevent the refrigerator from sliding while realizing the moving requirements of the users.

In order to achieve the above object, the present invention provides, in one aspect, a pulley leg device including at least one set of casters provided on a case, the casters including: the setting piece is fixed at the bottom of the box body; a caster member having a rotation shaft hole; the braking member is arranged corresponding to the caster member, penetrates through the rotating shaft hole and can hold the caster member on the setting member, wherein the braking member comprises a clamping part which can be contacted with the inner surface of the rotating shaft hole to fix the caster member relative to the setting member, a free part which can form a gap with the inner surface of the rotating shaft hole to enable the caster member to rotate relative to the setting member, and a driving member which comprises a main body part movably arranged on the setting member, an operating part arranged on the main body part and can be operated by a user, and a pushing part which can be driven by the operating part to push the braking member to move between a free position and a clamping position.

Preferably, the rotating shaft hole is a circular hole, the free portion is a cylindrical shaft, the clamping portion is a conical shaft, the outer diameter of the cylindrical shaft is smaller than the inner diameter of the circular hole, the major diameter of the conical shaft is larger than the inner diameter of the circular hole, and the minor diameter of the conical shaft is smaller than the inner diameter of the circular hole.

Preferably, the rotating shaft hole is a conical hole, the free portion is a cylindrical shaft, the clamping portion is a conical shaft, the outer diameter of the cylindrical shaft is smaller than the small diameter of the conical hole, and the large diameter of the conical shaft is larger than the large diameter of the conical shaft.

Preferably, the length of each of the locking portion and the free portion is greater than the axial length of the rotation shaft hole.

Preferably, the braking member further includes a first end portion provided on a side of the locking portion contacting the driving member, and a second end portion provided on a side of the free portion contacting the driving member, the first end portion and the second end portion being fixed to the driving member.

Preferably, the pushing portion includes a locking pushing portion in contact with the locking portion, and a free pushing portion in contact with the free portion; the operation part includes a first operation part protruding from one side edge of the case and a second operation part protruding from the other side edge of the case.

Preferably, the number of the caster members is two, the locking pushing portion and the free pushing portion are respectively two and are disposed at two sides of the corresponding caster member in the axial direction, and the main body portion, the locking pushing portion, the free pushing portion, the first operating portion and the second operating portion are integrally formed.

Preferably, the first operating portion and the second operating portion are provided at both ends of the main body portion, the stopper is in the free position when one of them protrudes from one side edge of the case, the free portion is located in the turning shaft hole to enable the caster to turn with respect to the setting member, the stopper is in the stopping position when the other protrudes from an opposite edge of the one side edge, and the stopping portion is located in the turning shaft hole to enable the caster to stop with respect to the setting member.

Preferably, the setting member includes support portions respectively disposed at two axial sides of the caster member, and the support portions are provided with setting holes for penetrating the braking member.

In addition, the invention provides a refrigerator, and the pulley support leg device is installed on the refrigerator according to any one of the technical schemes.

Through the technical scheme, the pulley leg device can be selectively set to rotate or be fixed relative to the setting part by utilizing the pulley part and the braking part movably penetrating through the rotating shaft hole, so that the movement requirement of a user can be met, the sliding can be reliably prevented, and the pulley leg device can be flexibly used in various occasions.

Drawings

Fig. 1 is a schematic view showing a specific structure (locking position) of the pulley leg device of the present invention.

Fig. 2 is a schematic view showing a specific structure (free position) of the pulley leg device of the present invention.

FIG. 3 is a schematic view showing a specific structure of the braking member according to the present invention.

FIG. 4 is a schematic view showing another embodiment of the braking member of the present invention.

FIG. 5 is a schematic view showing the structure of the braking member and the caster member according to the present invention (locking position).

FIG. 6 is a schematic view showing the detailed structure of the braking member and the caster member of the present invention (free position).

Description of the reference numerals

1 case body

10 castor 20 foot

11 setting piece

12 castor member 121 rotation axis hole

122 turnup

13 stopper 131 locking part

132 free portion 133 first end

134 second end portion

14 driver 141 main body part

142 pushing part

144 locking pushing part 145 free pushing part

146 first operation part 147 second operation part

Detailed Description

The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.

In the present invention, the use of directional words such as "upper, lower, left and right" generally means upper, lower, left and right as viewed with reference to the accompanying drawings; "inner and outer" refer to the inner and outer relative to the profile of the components themselves. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated.

In the present invention, there is provided a pulley leg device including at least one set of casters 10 provided on a case 1, the casters 10 including a setting member 11, a caster member 12, a braking member 13, and a driving member 14.

As shown in fig. 1, the setting member 11 is fixed at the bottom of the box 1 to fix the pulley leg device on the box, wherein the box 1 can be various, especially the outer shell of the domestic appliance such as refrigerator, and the outer shell can be rectangular as shown in the figure, and can also be other shape box.

The caster 12 has a rotation axis hole 121, and can be selectively set to rotate or be fixed with respect to the setting member 11 by the stopper 13 penetrating the rotation axis hole 121, so that it can be flexibly used in various occasions, for example, when it is necessary to move the case 1, it is possible to selectively make the caster 12 in a rotatable state, so that it is possible to easily push the case. When the box body moves to a proper position, a user needs to keep the box body 1 at the proper position for a long time, and can select to enable the caster members 12 to be in a fixed state, so that the box body 1 is kept stable, and the phenomenon that the box body 1 slides relative to the ground is avoided.

As described above, the braking members 13 are provided corresponding to the caster members 12, and the corresponding arrangement can be either one in which one caster member 12 is provided corresponding to one braking member 13 as shown in fig. 1, or can be arranged such that a plurality of caster members are provided corresponding to the same braking member 13, that is, one braking member 13 is simultaneously inserted through the rotation shaft holes 121 of the plurality of braking members 13 while the plurality of caster members 12 are held on the setting member 11.

Specifically, describing the case where one caster corresponds to one braking member 13, as shown in fig. 3 to 6, the braking member 13 includes a locking portion 131 capable of contacting the inner surface of the rotation shaft hole 121 to fix the caster 12 with respect to the setting member 11, and a free portion 132 capable of forming a gap with the inner surface of the rotation shaft hole 121 to allow the caster 12 to rotate with respect to the setting member 11.

The outer surface of the locking portion 131 can form an abutment surface capable of providing sufficient frictional force with the inner surface of the rotation shaft hole 121, so that the caster can be prevented from rotating with respect to the installation member 11 by the locking portion 131 in the stopper 13. The outer surface of the free portion 132 can form a clearance fit with the inner surface of the rotation shaft hole 121, thereby enabling the caster member to rotate on the free portion.

In addition, in order to make the operation easier for the user, the present invention further provides a driving member 14, and as shown in fig. 1 and fig. 2, the driving member 14 includes a main body portion 141 movably provided on the setting member 11, an operating portion provided on the main body portion 141 and operable by the user, and a pushing portion 142 which is driven by the operating portion and can push the movement of the braking member 13 between the free position and the locking position. The operation unit may be configured such that the driving unit 14 moves when a manual or foot-operated force is applied by a user's manual force, or may be configured to move and displace in a manner that is commonly used in the art, such as an electric push rod and a return spring.

In a preferred embodiment of the present invention, the locking portion 131 is formed by a contact surface, and the rotation axis hole 121 is a circular hole, the free portion 132 is a cylindrical axis, and the locking portion 131 is a conical axis, the outer diameter of the cylindrical axis is smaller than the inner diameter of the circular hole, the major diameter of the conical axis is larger than the inner diameter of the circular hole, and the minor diameter of the conical axis is smaller than the inner diameter of the circular hole.

With the pulley leg device configured as above, when the pulley member 12 needs to be locked, the driving member 14 is pushed in the direction indicated by F1 in fig. 1 and 5, the braking member 13 is driven by the driving member 14, so that the conical surface of the conical shaft locks the rotating shaft hole 121, and the rolling of the pulley member 12 is prevented, thereby preventing the sliding of the casing 1. When the caster 12 needs to be rolled, that is, the braking member 13 needs to be moved from the stopping position to the free position, the driving member 14 is pushed in the direction F2 shown in fig. 2 and 6, the braking member 13 is driven by the driving member 14, the circumferential shaft is located in the rotation shaft hole 121, and even if the conical surface falls off the rotation shaft hole 121, the two can generate relative movement, so that the caster 12 can be rolled, and the user can easily push the box 1.

Alternatively, the braking member 13 and the caster 12 may be realized by forming the rotation shaft hole 121 as a conical hole, forming the free portion 132 as a cylindrical shaft, forming the locking portion 131 as a conical shaft, forming the cylindrical shaft to have an outer diameter smaller than a small diameter of the conical hole, and forming the conical shaft to have a larger diameter than a large diameter of the conical shaft.

In order to ensure that both the free portion and the locking portion can be reliably and sufficiently engaged with the rotation shaft hole 121 when the stopper 13 moves in the rotation shaft hole 121, the length of each of the locking portion 131 and the free portion 132 is preferably larger than the axial length of the rotation shaft hole 121.

As shown in fig. 3, the caster 12 is preferably provided with a flange 122 so as to be held by the flange on the setting member 11. When the free portion 132 is engaged with the rotation shaft hole 121 and the flange 122, the caster member 12 can freely rotate. When the locking portion 131 is engaged with the rotation shaft hole 121 and the flange 122, since the tapered surface is larger than the diameter of the rotation shaft hole 121 and the flange 122 of the caster 12, the caster 12 is locked to the stopper 13, and since the stopper 13 is fixed to the driving member 14 by various means such as welding, caulking, interference fit, etc., that is, the stopper 13 itself cannot rotate, the caster 12 can be reliably prevented from rotating by the locking portion 131 of the stopper 13.

In addition, in order to enable the stopper 13 to be reliably held in the rotation shaft hole 121, it is preferable that the stopper 13 further includes a first end portion 133 and a second end portion 134, the first end portion 133 being provided on the side of the locking portion 131 contacting the driver 14; the second end 134 is disposed on the side of the free portion 132 contacting the driver 14, and the first end 133 and the second end 134 are both fixed to the driver 14, and specifically, the braking member 13 can be fixed to the driver 14 by riveting, welding, or the like.

For example, a push-in hole is opened in the locking push-in part 144 and the free push-out part 145, and the first end part 133 and the second end part 134 can be inserted from the push-in lock hole (i.e., the intersection of a circular hole and a rectangular hole smaller than the diameter of the circular hole), and then caulking is performed, so that the first end part 133 and the second end part 134 are coupled to the locking push-out part 144 and the free push-out part 145. As shown in fig. 3, the first end 133 and the second end 134 are directly welded to the locking pushing portion 144 and the free pushing portion 145.

Specifically, in the driver 14, the pushing portion 142 includes a latching pushing portion 144 in contact with the latching portion 131, a free pushing portion 145 in contact with the free portion 132; the operating portion includes a first operating portion 146 protruding from one side edge of the case 1, and a second operating portion 147 protruding from the other side edge of the case 1. The driving member 14 can be provided in a one-to-one correspondence with the stopper member 13, for example, when the respective caster member and the stopper member are provided at the corners of the bottom surface of the refrigerator, the first operating portion 146 and the second operating portion 147 may be protruded from the adjacent both side edges, respectively, in order to be operated, respectively.

In addition, the driving member 14 can be provided with a plurality of braking members 13 corresponding to the same driving member, which is convenient for the user to operate. As one preferred embodiment of the present invention, as shown in fig. 1, the caster 12 is provided in two, the locking pushing portion 144 and the free pushing portion 145 are provided in two, respectively, on both sides in the axial direction of the corresponding caster 12, and the main body portion 141, the locking pushing portion 144, the free pushing portion 145, the first operating portion 146, and the second operating portion 147 are formed integrally. With the above arrangement, the user can easily control the plurality of caster members 12 by one operation, and can set the first operation portion 146 and the second operation portion 147 to different colors, for example, the first operation portion 146 side is set to red to indicate that the caster members are not rotatable, and the second operation portion 147 side is set to green to indicate that the caster members are rotatable, which is not only convenient for the user to operate, but also convenient for the user to obtain the current status. A presentation letter or the like may be provided on the upper surface of the main body 141 at a position close to the first operation unit 146 and the second operation unit 147.

In addition to the above-mentioned technical solution, the first operating portion 146 and the second operating portion 147 are respectively provided at both ends of the main body portion 141, when one of them protrudes from one side edge of the case 1, the stopper 13 is in the free position, the free portion 132 is located in the rotation axis hole 121 to enable the caster 12 to rotate relative to the setting member 11, when the other protrudes from the opposite edge of the one side edge, the stopper 13 is in the locking position, and the locking portion 131 is located in the rotation axis hole 121 to enable the caster 12 to be locked relative to the setting member 11.

The setting part 11 comprises supporting parts respectively arranged at two axial sides of the caster 12, and a setting hole for penetrating through the braking part 13 is arranged on the supporting part, so that the caster 12 can be limited by the supporting part. When the braking member 13 moves from the locking position to the free position, the caster 12 is locked to the locking portion 131 of the braking member 13, the caster 12 moves until contacting the supporting portion in accordance with the movement of the braking member 13, and when the braking member 13 continues to move, the caster 12 cannot continue to move by being restricted by the supporting portion, and thus can fall off the locking portion 131 to the free portion.

In addition, the invention also provides a refrigerator, and the pulley support leg device according to any one of the technical schemes is installed on the refrigerator. The pulley leg device can easily make the refrigerator relatively still, avoid the sliding phenomenon of the refrigerator under the condition of steep slope or uneven bottom surface, and can be easily operated by feet of a user because the operating part protrudes out of the refrigerator as shown in figure 1, and particularly, as shown in figure 1, the same operating part is used for synchronously controlling a pair of adjacent pulley pieces 12, thus simplifying the operation and being more convenient to use. And the pulley foot arrangement can be used in conjunction with the foot 20.

The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, numerous simple modifications can be made to the technical solution of the invention, including combinations of the individual specific technical features in any suitable way. The invention is not described in detail in order to avoid unnecessary repetition. Such simple modifications and combinations should be considered within the scope of the present disclosure as well.

Claims

1. A pulley foot device comprising at least one set of casters (10) arranged on a box (1), characterized in that said casters (10) comprise:

a setting member (11) fixed at the bottom of the box body (1);

a caster member (12) having a rotation shaft hole (121);

a stopper member (13) provided in correspondence with the caster (12), the stopper member (13) penetrating the rotation shaft hole (121) and being capable of holding the caster (12) on the setting member (11), wherein the stopper member (13) includes a locking portion (131) capable of contacting an inner surface of the rotation shaft hole (121) to fix the caster (12) with respect to the setting member (11), and a free portion (132) capable of forming a clearance with the inner surface of the rotation shaft hole (121) to rotate the caster (12) with respect to the setting member (11), and

and the driving piece (14) comprises a main body part (141) movably arranged on the setting piece (11), an operating part which is arranged on the main body part (141) and can be operated by a user, and a pushing part (142) which can be driven by the operating part to push the braking piece (13) to move between a free position and a blocking position.

2. The pulley leg device according to claim 1, wherein said rotation axis hole (121) is a circular hole, said free portion (132) is a cylindrical axis, said engagement portion (131) is a conical axis, an outer diameter of said cylindrical axis is smaller than an inner diameter of said circular hole, a major diameter of said conical axis is larger than an inner diameter of said circular hole, and a minor diameter of said conical axis is smaller than an inner diameter of said circular hole.

3. The pulley leg device according to claim 1, wherein said rotation axis hole (121) is a conical hole, said free portion (132) is a cylindrical axis, said engagement portion (131) is a conical axis, an outer diameter of said cylindrical axis is smaller than a small diameter of said conical hole, and a large diameter of said conical axis is larger than a large diameter of said conical axis.

4. The pulley leg device according to claim 1, wherein the length of each of the seized portion (131) and the free portion (132) is larger than the axial length of the turning shaft hole (121).

5. The pulley foot arrangement according to claim 1, characterized in that said brake (13) further comprises a first end (133), which first end (133) is arranged on the side of said catching portion (131) in contact with said driving member (14), and a second end (134), which second end (134) is arranged on the side of said free portion (132) in contact with said driving member (14), said first end (133) and said second end (134) being fixed to said driving member (14).

6. The pulley foot device according to claim 1, characterized in that said pushing part (142) comprises a stuck pushing part (144) in contact with said stuck part (131), a free pushing part (145) in contact with said free part (132); the operation part comprises a first operation part (146) protruding from one side edge of the case body (1), and a second operation part (147) protruding from the other side edge of the case body (1).

7. The pulley foot device according to claim 6, wherein the number of the caster (12) is two, the locking pushing portion (144) and the free pushing portion (145) are respectively two and provided on both sides of the corresponding caster (12) in the axial direction, and the main body portion (141), the locking pushing portion (144), the free pushing portion (145), the first operating portion (146), and the second operating portion (147) are integrally formed.

8. The pulley leg device according to claim 7, wherein said first operating portion (146) and said second operating portion (147) are provided at both ends of said main body portion (141), said stopper member (13) is in said free position when one of them protrudes from one side edge of said case (1), said free portion (132) is located in said turning shaft hole (121) to enable said caster (12) to turn with respect to said setting member (11), said stopper member (13) is in said locking position when the other protrudes from the opposite edge of said one side edge, said locking portion (131) is located in said turning shaft hole (121) to enable said caster (12) to lock with respect to said setting member (11).

9. Pulley foot arrangement according to any of the claims 1-8, characterised in that said setting member (11) comprises support parts arranged on both axial sides of said wheel member (12), respectively, said support parts being provided with setting holes for passing said brake member (13).

10. A refrigerator, characterized in that the refrigerator is mounted with the pulley leg device according to any one of claims 1 to 9.