Long-acting pulley for oven

Abstract

A long-acting pulley for an oven comprises a pulley body, a concave guide groove is formed in the outer cylindrical surface of the pulley body, and a mounting hole is formed in the center of the pulley body. The bearing is sleeved with the wheel body through the mounting hole, and the wheel body and the bearing are coaxially mounted; the pulley further comprises a mounting shaft, the mounting shaft is sleeved with the bearing, the tail of the mounting shaft extends backwards to form a threaded shaft, and the pulley is connected with a fixed object through the threaded shaft. The pulley structure has the advantages that the bearing is arranged between the pulley body and the mounting shaft, so that the pulley rotates through the bearing when rotating, and the problem of abrasion caused by direct contact between the pulley body and the mounting shaft is solved. Friction force is greatly reduced by using the bearing, so that the service life of the pulley is remarkably prolonged, and the problem that in the prior art, the pulley is abraded too fast due to long-term friction is solved.

Description

Technical Field

[0001] The utility model relates to an oven hinge fitting, in particular to a long-lasting pulley for an oven. Background Art

[0002] As a common electrical appliance in modern families and commercial kitchens, the design structure of an oven directly affects the user experience and the service life of the device. In the hinge structure of an oven, the guide wheel is one of the crucial components, and its rotational performance affects the smoothness of the oven door opening and closing and the overall mechanical durability. However, there are still many defects in the design of the oven hinge guide wheel in the current existing technology, especially in terms of durability and sound insulation effect.

[0003] Taking Chinese patent numbers 201820595768.1, 201320459941.2, 201922184676.1, and 201420763050.0 as examples, in these technical solutions, the structure of the oven hinge guide wheel is mostly that the guide wheel is directly sleeved on the optical axis, and the optical axis usually adopts the form of a rivet, and the guide wheel is fixed to the hinge assembly through the rivet. Specifically, the mounting hole of the guide wheel is in direct contact with the rivet and rotates around the rivet shaft. However, this structural design shows the following obvious disadvantages during long-term use:

[0004] 1. Lack of effective lubrication: The mounting hole of the guide wheel is in direct contact with the optical axis. During rotation, due to the simplification of the design, there is usually no lubrication mechanism or lubrication condition limitation, and the friction between the guide wheel and the rivet shaft is relatively large. In this case, the internal friction of the guide wheel increases after long-term rotation, resulting in wear of the shaft hole, and the increase in friction resistance also makes the opening and closing of the oven door no longer smooth.

[0005] 2. Relatively loud noise: Due to the lack of lubrication, when the guide wheel rotates on the rivet shaft, it will generate relatively large frictional noise. As the guide wheel wears, this noise will become more and more obvious, seriously affecting the user experience of the oven. Especially in commercial ovens or high-end household ovens, the sound insulation effect is particularly important.

[0006] 3. Short service life: The direct contact design between the inner hole of the guide wheel and the rivet, although the initial installation is relatively simple, over time, the inner hole of the guide wheel is severely worn due to the lack of lubrication, eventually resulting in the loosening of the guide wheel or even abnormal operation. This wear not only shortens the service life of the guide wheel but also may affect the durability of the entire oven hinge, and further has an adverse impact on the overall service life of the oven.

[0007] 4. Limited potential for structural improvement: In the existing technology, the direct cooperation between the guide wheel and the rivet makes later maintenance difficult. If the guide wheel wears, the repair usually requires disassembling the entire hinge structure, increasing the repair cost and difficulty. Content of the Utility Model

[0008] The purpose of the present utility model is to overcome the disadvantages of the existing technology and provide a long-lasting pulley for an oven that has a simple structure, is convenient to use, can effectively reduce the friction when the guide wheel rotates, extend the service life of the guide wheel, reduce noise, and improve the opening and closing texture of the oven door.

[0009] The purpose of the present utility model is achieved in the following way: A long-lasting pulley for an oven, which includes a wheel body. An inwardly concave guide groove is provided on the outer cylindrical surface of the wheel body, and an installation hole is opened at the central position of the wheel body;

[0010] It further includes a bearing. The wheel body is sleeved outside the bearing through the installation hole, and the two are coaxially installed;

[0011] It further includes an installation shaft. The bearing is sleeved outside the installation shaft. A threaded shaft extends backward at the tail of the installation shaft, and the pulley is connected to a fixed object through this threaded shaft.

[0012] Furthermore: A retaining platform is convexly provided on the cylindrical surface of the installation shaft. The inner end face of the bearing bears on the outer end face of this retaining platform to limit the axial displacement of the bearing.

[0013] Furthermore: Anti-slip teeth are provided on the inner end face of the retaining platform.

[0014] Furthermore: The anti-slip teeth are distributed in a circumferential array on the outer end face of the retaining platform.

[0015] Furthermore: An inwardly concave driving groove is provided on the outer end face of the installation shaft.

[0016] Furthermore: The wheel body is made of plastic material.

[0017] Furthermore: The bearing is a deep groove ball bearing.

[0018] Furthermore: The installation shaft is made of metal material.

[0019] The beneficial effects of the present utility model are: 1. The structure is simple, the production cost is low, and the market competitiveness is improved.

[0020] 2. In the pulley structure of the present utility model, by providing a bearing between the wheel body and the installation shaft, the pulley rotates through the bearing during rotation, avoiding the wear problem caused by the direct contact between the wheel body and the installation shaft. The use of the bearing significantly reduces the friction force, thereby significantly extending the service life of the pulley and overcoming the problem in the existing technology that the pulley wears too fast due to long-term friction.

[0021] 3. Since the bearing is used to bear and reduce friction, the pulley rotates more smoothly, effectively reducing the noise problem generated during rotation. Compared with the design in the prior art where the guide wheel is directly sleeved on the rivet for operation, the present utility model solves the defect of large friction noise of the guide wheel by introducing the bearing, greatly improving the silent effect during the use of the oven.

[0022] 4. The present utility model is provided with a stop on the cylindrical surface of the mounting shaft, and this stop is used to limit the axial displacement of the bearing, ensuring the stable operation of the pulley. This structural design effectively avoids the situation where the pulley becomes loose or the operation becomes unstable due to axial displacement of the bearing during use, further improving the stability and durability of the overall structure.

[0023] 5. The pulley is connected to the fixed object through the threaded shaft 51 on the mounting shaft 5. This threaded connection method makes the installation of the pulley more firm, avoiding the safety hazards caused by the loosening of the rivet connection in the prior art. The design of the present utility model ensures that the pulley remains stable during use for a long time and does not affect the normal opening and closing of the oven door due to loosening. In addition, the detachable structure only needs to be disassembled and replaced separately when maintenance is required later. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is an effect diagram of the assembly and use of the present utility model with the oven pull arm.

[0025] Figure 2 、 3 It is a schematic structural diagram of the present utility model.

[0026] Figure 4 It is a cross-sectional view of the structure of the present utility model.

[0027] Figure 5 It is an exploded view of the structure of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] The following further describes the present utility model in detail with reference to the drawings. A long-lasting pulley for an oven, which includes a wheel body 1, an inwardly concave guide groove 2 is provided on the outer cylindrical surface of the wheel body 1, and a mounting hole 3 is opened at the central position of the wheel body 1;

[0029] It further includes a bearing 4, and the wheel body 1 is sleeved outside the bearing 4 through the mounting hole 3, and the two are coaxially installed;

[0030] It further includes a mounting shaft 5, the bearing 4 is sleeved outside the mounting shaft 5, and a threaded shaft 51 extends backward at the tail of the mounting shaft 5, and this pulley is connected to the fixed object through the threaded shaft 51.

[0031] In one embodiment: a stop 52 is convexly provided on the cylindrical surface of the mounting shaft 5, and the inner end surface of the bearing 4 bears on the outer end surface of this stop 52 to limit the axial displacement of the bearing 4.

[0032] In one embodiment, anti-slip teeth 53 are provided on the inner end face of the retaining platform 52.

[0033] In one embodiment, the anti-slip teeth 53 are arranged in a circumferential array on the outer end face of the retaining platform 52.

[0034] In one embodiment, a concave driving groove 54 is provided on the outer end face of the mounting shaft 5.

[0035] In one embodiment, the wheel body 1 is made of plastic material.

[0036] In one embodiment, the bearing 4 is a deep groove ball bearing 4.

[0037] In one embodiment, the mounting shaft 5 is made of metal material.

[0038] Working principle: In this case, the plastic wheel body 1 is sleeved on the outer ring of the bearing 4 through the mounting hole 3 at its center, and the bearing 4 is sleeved on the outer ring of the mounting shaft 5, so that the wheel body, the bearing and the mounting shaft are coaxially installed. This structural design ensures that the wheel body can rotate flexibly around the mounting shaft. The rotation of the pulley is realized through the bearing 4. The rolling elements of the bearing reduce the frictional force during the rotation of the wheel body between its inner ring and outer ring, enabling the pulley to run smoothly and smoothly.

[0039] Among them, in order to prevent the axial displacement of the bearing 4, a retaining platform 52 is provided in a convex manner on the cylindrical surface of the mounting shaft 5, and the inner ring end face of the bearing bears on the outer end face of the retaining platform 52. The design of the retaining platform effectively restricts the axial movement of the bearing, ensures the stability of the pulley during long-term use, and prevents problems such as loosening or jamming caused by the displacement of the bearing. This design not only improves the firmness of the overall structure but also extends the service life of the pulley.

[0040] Furthermore, the pulley is connected to a fixing object such as the hinge structure of an oven through a threaded shaft 51 extending from the tail of the mounting shaft 5. The threaded shaft 51 reliably mounts the pulley on the oven structure through a threaded fastening method. Together with the anti-slip teeth on the end face of the retaining platform, it ensures that the pulley will not loosen during the working process and improves the connection strength between the pulley and the oven assembly. Compared with the traditional rivet connection, the threaded connection is not only more firm but also provides higher maintainability, facilitating disassembly and replacement.

[0041] Furthermore, since the wheel body 1 in the present utility model rotates in cooperation with the mounting shaft 5 through the bearing 4, the wheel body itself does not directly contact the mounting shaft, and the bearing undertakes the rotation function of the pulley. The rolling contact between the inner and outer rings of the bearing greatly reduces the friction when the pulley rotates, avoiding the wear and noise generated by the direct contact and friction between the traditional pulley and the rivet. With the reduction of friction, the pulley of the present utility model can not only maintain smooth rotation during long-term use, but also significantly reduce noise and improve the use experience of the oven during the opening and closing process.

[0042] In summary, through reasonable structural design, the present utility model realizes the long-term, silent and efficient operation of the pulley, significantly improves the performance of the oven hinge system, and has excellent technical advantages and broad application prospects.

[0043] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed.

Claims

1. A long-lasting pulley for an oven, characterized in that: It includes a wheel body (1), on the outer cylindrical surface of the wheel body (1), there is a concave guiding groove (2), and at the central position of the wheel body (1), there is an installation hole (3); It further includes a bearing (4), the wheel body (1) is sleeved outside the bearing (4) through the installation hole (3), and the two are coaxially installed; It further includes an installation shaft (5), the bearing (4) is sleeved outside the installation shaft (5), at the tail of the installation shaft (5), there is a threaded shaft (51) extending backward, and this pulley is connected to a fixed object through this threaded shaft (51).

2. The long-lasting pulley for an oven according to claim 1, wherein: On the cylindrical surface of the installation shaft (5), there is a protruding retaining platform (52), and the inner end face of the bearing (4) bears on the outer end face of this retaining platform (52) to limit the axial displacement of the bearing (4).

3. The long-lasting pulley for an oven according to claim 2, characterized in that: On the inner end face of the retaining platform (52), there are anti-slip teeth (53).

4. The long-lasting pulley for an oven according to claim 3, wherein: The anti-slip teeth (53) are arranged in a circumferential array on the outer end face of the retaining platform (52).

5. The long-lasting pulley for an oven according to claim 1, characterized in that: On the outer end face of the installation shaft (5), there is a concave driving groove (54).

6. The long-lasting pulley for an oven according to claim 1, wherein: The wheel body (1) is made of plastic material.

7. The long-lasting pulley for an oven according to claim 1, wherein: The bearing (4) is a deep groove ball bearing (4).

8. The long-lasting pulley for an oven according to claim 1, wherein: The installation shaft (5) is made of metal material.

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