A roller assembly

Abstract

The present invention discloses a roller assembly, comprising: a sliding sleeve having a first through hole extending through the sliding sleeve along its axial direction, the sliding sleeve having a deformation portion extending radially inward on the inner wall forming the first through hole; a positioning pin inserted in the first through hole, the positioning pin comprising a first riveted portion and a second riveted portion spaced along the axial direction, an annular groove formed radially between the first riveted portion and the second riveted portion; the deformation portion of the sliding sleeve can flow radially to be inserted into the annular groove after the sliding sleeve and the positioning pin are riveted, so that the positioning pin can rotate relative to the sliding sleeve. The roller assembly applies a force to the sliding sleeve or the positioning pin by flat die riveting, so that the inner wall of the sliding sleeve forms a deformation portion to be inserted into the annular groove, that is, the installation of the roller assembly is realized, the structure is simple, the assembly is convenient, the assembly efficiency of the workers is higher, and the wall thickness of the sliding sleeve is uniform, and it is not easy to deform during use, which reduces the use cost.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical manufacturing, in particular to a roller assembly. Background Art

[0002] The roller assembly is generally assembled together through multiple sub-components, which can provide a large lateral load and push-out force during the rolling process, and can be used in household appliances, chassis or cabinets, etc. The patent with application number CN201821928166.X discloses a self-fastening roller assembly, including a positioning pin, a rolling sleeve and a connecting seat. The rolling sleeve is first sleeved on the outside of the positioning pin, and then the first riveted part of the positioning pin is inserted into the first riveted hole of the connecting seat. The first riveted part of the positioning pin and the first riveted hole of the connecting seat are riveted using a riveting tool. After the connection, the rolling sleeve is restricted between the positioning pin and the connecting seat and can rotate around the positioning pin, and a single component is assembled. The self-fastening roller assembly has the following disadvantages: three sub-components are required for assembly, the assembly accuracy requirements are high, the manufacturing requirements are also high, and the efficiency of production and assembly is reduced; and the roller wall thickness is uneven, which is easy to cause deformation and failure, and increase the cost of use. Summary of the invention

[0003] In order to overcome the defects in the prior art, an embodiment of the present invention provides a roller assembly, which is used to solve the problems of complex installation, low efficiency and easy deformation of the roller assembly.

[0004] The embodiment of the present application discloses a roller assembly. The roller assembly only needs to sleeve a sliding sleeve on the outside of a locating pin, and apply a force to the sliding sleeve by flat die riveting, so that the inner wall of the sliding sleeve forms a deformation portion to be inserted into the locating groove of the locating pin, thereby achieving installation of the roller assembly. The structure is simple, and only two sub-components are required to achieve the function of the roller. The assembly is convenient, and no complicated mechanism is required. The assembly efficiency of workers is higher. The wall thickness of the sliding sleeve is uniform, and it is not easy to deform during use, thereby reducing the cost of use.

[0005] The present application also discloses a roller assembly, including:

[0006] A sliding sleeve, wherein a first through hole is formed inside the sliding sleeve and passes through the sliding sleeve along its axial direction, and the sliding sleeve has a deformation portion extending radially inward on an inner wall forming the first through hole;

[0007] a positioning pin passing through the first through hole, the positioning pin comprising a first riveted portion and a second riveted portion spaced apart along the axial direction, an annular groove being formed between the first riveted portion and the second riveted portion in a radial direction;

[0008] The deformation portion of the sliding sleeve can flow in the radial direction after the sliding sleeve and the positioning pin are riveted to be clamped into the annular clamping groove, so that the positioning pin can rotate relative to the sliding sleeve.

[0009] Furthermore, the sliding sleeve includes a first main body portion connected to the deformation portion, and the first main body portion is clearance-matched with the positioning pin.

[0010] Furthermore, the width of the deformation portion in the radial direction is smaller than the width of the annular groove in the radial direction, and the height of the deformation portion in the axial direction is smaller than the height of the annular groove in the axial direction.

[0011] Furthermore, an outer diameter of the first riveted portion is smaller than an outer diameter of the second riveted portion.

[0012] Furthermore, the outer diameter of the first riveted portion is greater than the outer diameter of the second riveted portion.

[0013] Furthermore, the end surface of the sliding sleeve is flush with the end surface of the first riveted portion, and the bottom of the sliding sleeve is in contact with the end surface of the second riveted portion.

[0014] Furthermore, a first gap is provided between the first riveted portion and the inner wall of the first through hole, and the first gap is smaller than the width of the deformation portion along the radial direction.

[0015] Furthermore, a second gap is provided between the second riveted portion and the inner wall of the first through hole, and the second gap is smaller than the width of the deformation portion along the radial direction.

[0016] The beneficial effects of the present invention are as follows:

[0017] 1. The roller assembly applies force to the sliding sleeve or the positioning pin by means of flat die riveting, so that the inner wall of the sliding sleeve forms a deformation portion to be inserted into the annular groove of the positioning pin, thereby realizing the installation of the roller assembly. The structure is simple, and only two sub-components are required to realize the function of the roller. The assembly is convenient, and no complex mechanism is required. The assembly efficiency of workers is higher. The wall thickness of the sliding sleeve is uniform, and it is not easy to deform during use, thereby reducing the use cost.

[0018] 2. Before riveting, the roller assembly only needs to sleeve the sliding sleeve on the outside of the positioning pin, and the inner wall of the sliding sleeve is matched with the positioning pin in a clearance, so that the deformation part and the positioning groove are arranged relative to each other, so that the sliding sleeve can rotate relative to the positioning pin. The assembly is simple and convenient for workers to operate. Compared with the existing roller assembly assembled with three sub-components, the sliding is smoother and the production cost is reduced.

[0019] In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 is a cross-sectional schematic diagram of roller assembly embodiment 1 before riveting in an embodiment of the present invention;

[0022] Figure 2 is a cross-sectional schematic diagram of the roller assembly embodiment 1 after riveting in the embodiment of the present invention;

[0023] Figure 3 is a cross-sectional schematic diagram of roller assembly embodiment 2 before riveting in an embodiment of the present invention;

[0024] Figure 4 is a cross-sectional schematic diagram of roller assembly embodiment 2 after riveting in an embodiment of the present invention;

[0025] Figure 5 is a cross-sectional schematic diagram of roller assembly embodiment 3 before riveting in an embodiment of the present invention;

[0026] Figure 6 is a cross-sectional schematic diagram of roller assembly embodiment 3 after riveting in an embodiment of the present invention;

[0027] Figure 7 is a cross-sectional schematic diagram of roller assembly embodiment 4 before riveting in an embodiment of the present invention;

[0028] Figure 8 is a cross-sectional schematic diagram of the roller assembly embodiment 4 after riveting in the embodiment of the present invention;

[0029] Fig. 9 is a cross-sectional schematic diagram of roller assembly embodiment 5 before riveting in an embodiment of the present invention;

[0030] Fig.10 It is a cross-sectional schematic diagram of roller assembly embodiment 5 after riveting in an embodiment of the present invention.

[0031] The figure markings of the above drawings are: 1. sliding sleeve; 2. positioning pin; 3. first through hole; 4. deformation part; 5. first riveted part; 6. second riveted part; 7. annular groove; 8. first main body part; 9. second main body part; 10. second through hole; 11. columnar part; 12. protrusion part. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] The roller assembly described in this embodiment only needs to sleeve a sliding sleeve on the outside of a positioning pin, and apply a force to the sliding sleeve or the positioning pin by flat die riveting, so that the inner wall of the sliding sleeve forms a deformation portion to snap into the annular groove of the positioning pin, thereby achieving installation of the roller assembly. The structure is simple, and only two sub-components are needed to achieve the function of the roller. The assembly is convenient, and no complicated mechanism is required. The assembly efficiency of workers is higher. The sliding sleeve has a uniform wall thickness and is not easily deformed during use, thereby reducing the cost of use.

[0034] The present application also discloses a roller assembly, including:

[0035] A sliding sleeve 1, wherein a first through hole 3 is formed inside the sliding sleeve 1 and passes through the sliding sleeve 1 in the axial direction thereof, and the sliding sleeve 1 has a deformation portion 4 extending radially inward on the inner wall forming the first through hole 3;

[0036] A positioning pin 2 is inserted into the first through hole 3, the positioning pin 2 comprises a first riveted portion 5 and a second riveted portion 6 which are spaced apart along the axial direction, and an annular groove 7 is formed between the first riveted portion 5 and the second riveted portion 6 along the radial direction;

[0037] The deformation portion 4 of the sliding sleeve 1 can flow in the radial direction after the sliding sleeve 1 and the positioning pin 2 are riveted to be inserted into the annular groove 7 , so that the positioning pin 2 can rotate relative to the sliding sleeve 1 .

[0038] Combination Figure 1-Figure 10 With the above structure, the worker sleeves the sliding sleeve 1 from the upper part of the positioning pin 2 to the outside of the positioning pin 2, and there is a certain gap between the inner wall of the first through hole 3 of the sliding sleeve 1 and the first riveted part 5 or the second riveted part 6, so that the sliding sleeve 1 can slide relative to the positioning pin 2. After the positions of the sliding sleeve 1 and the positioning pin 2 are determined, a force is applied from the end surface of the sliding sleeve 1 or the positioning pin 2, so that the inner wall of the sliding sleeve 1 forms a deformation portion 4 extending inward along the radial direction to be clamped into the annular clamping groove 7 of the positioning pin 2, so that the sliding sleeve 1 is connected with the positioning pin 2, and the installation of the roller assembly is completed.

[0039] Specifically, in Example 1, the roller assembly includes: a sliding sleeve 1 and a positioning pin 2.

[0040] like Figure 1 As shown, in the state before riveting: the sliding sleeve 1 can be cylindrical. A first through hole 3 is formed inside the sliding sleeve 1 and penetrates along its axial direction. The sliding sleeve 1 has a deformation portion 4 that can extend radially inward on the inner wall forming the first through hole 3. The deformation portion 4 is located at the bottom of the inner wall of the sliding sleeve 1. The positioning pin 2 includes a first riveted portion 5 and a second riveted portion 6 that is spaced apart from the first riveted portion 5 along the axial direction of the first riveted portion 5. The positioning pin 2 has an annular groove 7 that is annular. The annular groove 7 is located between the first riveted portion 5 and the second riveted portion 6. Before the positioning pin 2 and the sliding sleeve 1 are riveted, the sliding sleeve 1 can slide relative to the positioning pin 2, and the deformation portion 4 can be arranged relative to the positioning groove. The first riveted portion 5 is located in the first through hole 3 , so that when the sliding sleeve 1 rotates relative to the first riveted portion 5 , the second riveted portion 6 abuts against the sliding sleeve 1 from the bottom to prevent the sliding sleeve 1 and the positioning pin 2 from falling off.

[0041] like Figure 2As shown, after riveting: the sliding sleeve 1 may be cylindrical. A first through hole 3 is formed inside the sliding sleeve 1 and passes through along its axial direction. The first through hole 3 is cylindrical. The sliding sleeve 1 has a deformation portion 4 extending radially inward on the inner wall forming the first through hole 3. The deformation portion 4 is a raised ring. The sliding sleeve 1 also includes a first body portion 8 connected to the deformation portion 4. The first body portion 8 is clearance-matched with the positioning pin 2. The positioning pin 2 is inserted into the first through hole 3. The positioning pin 2 includes a first riveted portion 5 and a second riveted portion 6 arranged at intervals along the axial direction. The end face of the first riveted portion 5 is flush with the end face of the sliding sleeve 1. The end face is the upper surface. The end face of the second riveted portion 6 is in contact with the bottom of the sliding sleeve 1. Both the first riveted portion 5 and the second riveted portion 6 may be cylindrical. The outer diameter of the first riveted portion 5 is smaller than the outer diameter of the second riveted portion 6. An annular groove 7 is formed radially between the first riveted portion 5 and the second riveted portion 6. The end surface of the second riveted portion 6 contacts the bottom of the sliding sleeve 1 to complete the installation of the roller assembly, which is convenient to install without any other assistance. The deformation portion 4 of the sliding sleeve 1 can flow radially after the sliding sleeve 1 and the positioning pin 2 are riveted to fit into the annular groove 7, so that the positioning pin 2 can rotate relative to the sliding sleeve 1. The roller assembly only requires two sub-components for assembly, which is convenient to assemble and does not require a complex mechanism. The assembly efficiency of workers is higher, and the sliding sleeve 1 has a uniform wall thickness and is not easily deformed during use, which reduces the cost of use.

[0042] like Figure 3 , Figure 4 As shown, in Example 2, the structure of Example 2 is generally the same as that of Example 1, and the difference is that:

[0043] State after riveting: The sliding sleeve 1 has a deformation portion 4 extending radially inward on the inner wall forming the first through hole 3. The deformation portion 4 is a rectangular parallelepiped. The positioning pin 2 is inserted into the first through hole 3. The positioning pin 2 includes a first riveted portion 5 and a second riveted portion 6 arranged at intervals along the axial direction. The outer diameter of the first riveted portion 5 is smaller than the outer diameter of the second riveted portion 6. An annular groove 7 is formed radially between the first riveted portion 5 and the second riveted portion 6. The deformation portion 4 of the sliding sleeve 1 can flow radially after the sliding sleeve 1 and the positioning pin 2 are riveted to be stuck in the annular groove 7, so that the sliding sleeve 1 can rotate relative to the positioning pin 2. The roller assembly only requires two sub-components for assembly, which is convenient to assemble and does not require complex mechanisms. The assembly efficiency of workers is higher, and the wall thickness of the sliding sleeve 1 is uniform, and it is not easy to deform during use, which reduces the cost of use.

[0044] In Example 3, the structure of Example 3 is generally the same as that of Example 1, except that:

[0045] like Figure 5 As shown, in the state before riveting: the sliding sleeve 1 includes a first body portion 8 arranged in the radial direction, and a second body portion 9 fixed to the outer end of the first body portion 8 in the vertical direction. The bottom end of the inner wall of the second body portion 9 has a deformation portion 4 that can extend radially inward. The sliding sleeve 1 can slide relative to the positioning pin 2 before the positioning pin 2 and the sliding sleeve 1 are riveted, and the deformation portion 4 can be arranged opposite to the annular groove 7.

[0046] like Figure 6 As shown, in the riveted state: the sliding sleeve 1 includes a first main body portion 8 arranged in the radial direction and a second main body portion 9 fixed to the outer end of the first main body portion 8 in the vertical direction. The sliding sleeve 1 has a deformation portion 4 extending radially inward on the inner wall forming the first through hole 3. The deformation portion 4 is located at the bottom end of the sliding sleeve 1. The cross section of the deformation portion 4 can be a rectangular parallelepiped. The positioning pin 2 of the sliding sleeve 1 includes a first riveted portion 5 and a second riveted portion 6 arranged at intervals along the axial direction. The outer diameter of the first riveted portion 5 is greater than the outer diameter of the second riveted portion 6. The end face of the first main body portion 8 is flush with the end face of the positioning pin 2. The deformation portion 4 is arranged opposite to the annular groove 7. The deformation portion 4 is deformed by force on the end face of the sliding sleeve 1 to form a curling edge, so as to be clamped in the annular groove 7 to prevent the sliding sleeve 1 and the positioning pin 2 from falling off, so that the sliding sleeve 1 can rotate relative to the positioning pin 2. The roller assembly is simple to assemble and easy for workers to operate, which greatly improves work efficiency. Compared with the existing roller assembly assembled from three sub-parts, the sliding is smoother and the production cost is reduced.

[0047] In Example 4, the structure of Example 4 is generally the same as that of Example 1, except that:

[0048] like Figure 7 As shown, the state before riveting: the sliding sleeve 1 includes a first main body portion 8 arranged in the radial direction and a second main body portion 9 fixed to the two ends of the first main body portion 8 in the vertical direction. A columnar portion 11 arranged in the axial direction is formed at the bottom of the first main body portion 8. The bottom end of the inner wall of the second main body portion 9 has a deformation portion 4 that can deform in the radial direction. A second through hole 10 penetrating in the axial direction is formed inside the positioning pin 2. The columnar portion 11 is penetrated in the second through hole 10. The sliding sleeve 1 can slide relative to the positioning pin 2 before the positioning pin 2 and the sliding sleeve 1 are riveted, and the deformation portion 4 can be arranged relative to the annular groove 7.

[0049] like Figure 8As shown, after riveting, the sliding sleeve 1 includes a first main body portion 8 arranged in the radial direction and a second main body portion 9 fixed at both ends of the first main body portion 8 in the vertical direction. A columnar portion 11 arranged in the axial direction is formed at the bottom of the first main body portion 8. The columnar portion 11 is fixedly connected to the upper inner wall of the sliding sleeve 1. A second through hole 10 penetrating in the axial direction is formed inside the positioning pin 2. The columnar portion 11 is penetrated in the second through hole 10. The outer diameter of the columnar portion 11 is smaller than the inner diameter of the second through hole 10, so that the second through hole 10 can rotate relative to the columnar portion 11. The positioning pin 2 also includes a first riveted portion 5 and a second riveted portion 6 arranged at intervals in the axial direction. The outer diameter of the first riveted portion 5 is larger than the outer diameter of the second riveted portion 6. A deformation portion 4 is provided at the bottom end of the inner wall of the sliding sleeve 1. When the end surface of the sliding sleeve 1 is subjected to force, the deformation portion 4 can be deformed in the radial direction to be clamped in the annular clamping groove 7 to prevent the sliding sleeve 1 and the positioning pin 2 from falling off, so that there are two rotation surfaces between the sliding sleeve 1 and the positioning pin 2. The roller assembly is easy to assemble, convenient for workers to operate, greatly improves work efficiency, and compared with the existing roller assembly assembled from three sub-components, it slides more smoothly and reduces production costs.

[0050] In Example 5, Example 4 is generally the same in structure as Example 1, except that:

[0051] like Fig. 9 As shown, in the state before riveting: the sliding sleeve 1 is formed with a first through hole 3 arranged along the axial direction. A protrusion 12 is provided on one side of the end surface of the sliding sleeve 1. A deformation portion 4 is provided on the other side of the end surface of the sliding sleeve 1. The inner wall of the deformation portion 4 is parallel to the inner wall of the protrusion 12. The positioning pin 2 is sleeved in the first through hole 3 of the sliding sleeve 1. The sliding sleeve 1 can slide relative to the positioning pin 2 before the positioning pin 2 and the sliding sleeve 1 are riveted, and the deformation portion 4 can be arranged relative to the annular groove 7.

[0052] like Fig.10As shown, after riveting, the sliding sleeve 1 is provided with a first through hole 3 arranged along the axial direction. A protrusion 12 is provided on one side of the end surface of the sliding sleeve 1. A deformation part 4 is provided on the other side of the end surface of the sliding sleeve 1. The positioning pin 2 includes a first riveted part 5 and a second riveted part 6 arranged at intervals along the axial direction. The outer diameter of the first riveted part 5 is greater than the outer diameter of the second riveted part 6. The end surface of the deformation part 4 contacts the bottom surface of the first riveted part 5. When a force is applied from the end surface of the positioning pin 2, the deformation part 4 is bent in the radial direction close to the axis under the action of the force, so as to be clamped in the annular clamping groove 7 of the positioning pin 2, preventing the sliding sleeve 1 from falling off from the positioning pin 2, so that the sliding sleeve 1 can rotate relative to the positioning pin 2. The roller assembly is easy to assemble, convenient for workers to operate, and greatly improves work efficiency. Compared with the existing roller assembly assembled with three sub-components, it slides more smoothly and reduces production costs.

[0053] Specifically, in this embodiment, the radial width of the deformation portion 4 is smaller than the radial width of the annular groove 7. The axial height of the deformation portion 4 is smaller than the axial height of the annular groove 7, so that there is a certain gap between the deformation portion 4 and the annular groove 7, so that the sliding sleeve 1 can rotate relative to the positioning pin 2.

[0054] Specifically, in Example 1, Example 2, Example 3, and Example 4, a first gap is provided between the first riveted portion 5 and the inner wall of the first through hole 3. The first gap is smaller than the width of the deformable portion 4 along the radial direction, so that the deformable portion 4 can be embedded in the annular groove 7, preventing the positioning pin 2 from falling off from the sliding sleeve 1, and ensuring that the roller assembly can rotate smoothly.

[0055] Specifically, in Embodiment 5, a second gap is provided between the second riveted portion 6 and the inner wall of the first through hole 3. The second gap is smaller than the width of the deformable portion 4 in the radial direction, so that the deformable portion 4 can be embedded in the annular groove 7, preventing the positioning pin 2 from falling off from the sliding sleeve 1, and ensuring that the roller assembly can rotate smoothly.

[0056] The roller assembly has a simple structure and only requires two sub-components to be installed together. The sliding sleeve and the positioning pin are connected together by flat die riveting. The installation method is simple, so that the sliding sleeve and the positioning pin can rotate relative to each other, which is convenient for workers to operate, greatly improves work efficiency and reduces production costs.

[0057] Specific embodiments are used in the present invention to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the technical solution and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A roller assembly, characterized in that: include: A sliding sleeve, wherein a first through hole is formed inside the sliding sleeve and passes through the sliding sleeve along its axial direction, and the sliding sleeve has a deformation portion extending radially inward on an inner wall forming the first through hole; a positioning pin passing through the first through hole, the positioning pin comprising a first riveted portion and a second riveted portion spaced apart along the axial direction, an annular groove being formed radially between the first riveted portion and the second riveted portion, the outer diameter of the first riveted portion being smaller than the outer diameter of the second riveted portion, or the outer diameter of the first riveted portion being larger than the outer diameter of the second riveted portion; The deformation portion of the sliding sleeve can flow in the radial direction after the sliding sleeve and the positioning pin are riveted to be inserted into the annular groove, so that the positioning pin can rotate relative to the sliding sleeve; State before riveting: the sliding sleeve is provided with the first through hole penetrating along the axial direction thereof, the sliding sleeve is formed on the inner wall of the first through hole and has the deformation portion extending radially inward, the sliding sleeve can slide relative to the positioning pin before the positioning pin and the sliding sleeve are riveted, and the deformation portion can be arranged opposite to the annular groove; State after riveting: After the sliding sleeve and the locating pin are riveted, the deformation part flows radially to be stuck in the annular groove and formed into a raised circular ring. The sliding sleeve also includes a first main body part connected to the deformation part. The first main body part is loosely matched with the locating pin, so that the locating pin can rotate relative to the sliding sleeve.

2. The roller assembly according to claim 1, characterized in that: The sliding sleeve comprises a first body portion connected to the deformation portion, and the first body portion is clearance-matched with the positioning pin.

3. The roller assembly according to claim 1, characterized in that: The width of the deformation portion in the radial direction is smaller than the width of the annular groove in the radial direction, and the height of the deformation portion in the axial direction is smaller than the height of the annular groove in the axial direction.

4. The roller assembly according to claim 1, characterized in that: The end surface of the sliding sleeve is flush with the end surface of the first riveted portion, and the bottom of the sliding sleeve is in contact with the end surface of the second riveted portion.

5. The roller assembly according to claim 1, characterized in that: A first gap is provided between the first riveting portion and the inner wall of the first through hole, and the first gap is smaller than a width of the deformation portion along a radial direction.

6. The roller assembly according to claim 1, characterized in that: A second gap is provided between the second riveting portion and the inner wall of the first through hole, and the second gap is smaller than a width of the deformation portion along a radial direction.

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