Oven door hinge
By using rolling brackets and spring components in oven door hinges, combined with limit structure, the problems of short fatigue life and position offset of existing hinge torsion springs and tension springs are solved, achieving longer service life and more stable action .
Patent Information
- Application Number
- CN202421046938.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-14
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-05-14
AI Technical Summary
The torsion spring and tension spring of the existing oven door hinge have short fatigue life, resulting in a shortened service life, and the position of the compression spring is easily deviated during use, affecting the reliability of the operation.
Rolling bracket and rolling spring are used instead of torsion spring, and spring top rod, spring bushing and return spring are used instead of pulling spring. Combined with the limit structure and guide chamfer, we ensure uniform stress and reliable action.
It extends the service life of the hinge and the reliability of the operation, prevents the position of the spring assembly from being offset during the reset process, and improves the stability of the switching operation of the oven door.
Smart Images
Figure CN222276472U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of hinges, in particular to an oven door hinge. Background Art
[0002] An oven is a commonly used household appliance, which is used to process some pasta, such as bread, pizza, egg tarts, small biscuits, and can also bake sweet potatoes, barbecue, etc. At present, the oven body and the cabinet door are connected by a hinge structure, and are opened and closed by the elastic force or tension of the spring. When the cabinet door needs to be opened, the cabinet door is pulled open to stretch or compress the spring to open the cabinet door; when the cabinet door needs to be closed, the cabinet door is only needed to be released, and the cabinet door will be closed due to the resetting effect of the spring. For example, Chinese patent No. CN 204715982U discloses a small hinge and Chinese patent No. CN 214170278 U discloses a hinge and an oven using the hinge.
[0003] However, the existing hinge structure has the following problems:
[0004] 1. The fatigue life of the torsion spring is short, which causes the oven door to fail to close smoothly after long-term use, shortening the service life of the hinge structure;
[0005] 2. The fatigue life of the tension spring is short, thus shortening the service life of the hinge structure. Although some hinges use compression springs instead of tension springs to increase the service life, the position of the compression spring is prone to shift during use, resulting in uneven force, which in turn affects the reliability of the hinge structure. Utility Model Content
[0006] In view of the deficiencies in the prior art, the utility model provides an oven door hinge, which has the effects of simple structure, long service life, uniform force and stable and reliable operation.
[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an oven door hinge, comprising a hinge body and a hinge arm matched with the hinge body, the hinge body and the hinge arm are hingedly connected to each other by setting a first rivet, and the hinge body is provided with a movable component and a spring component matched with it, characterized in that: the movable component comprises a movable clamp and a rolling structure, the upper part of the movable clamp is provided with a movable part matched with the rolling structure, one end of the movable clamp is hingedly connected to the hinge arm by setting a second rivet, and the other end of the movable clamp is connected to the hinge arm by setting a third rivet The nail and the spring assembly are movably connected to each other, and the rolling structure includes a rolling rivet and a roller mounted on the rolling rivet. A rolling bracket compatible with the roller is clamped on the rolling rivet. Two support rods integrally arranged therewith are provided on the rolling bracket, and a rolling spring compatible with the roller is mounted on the support rod. The spring assembly includes a spring push rod and a spring bushing and a return spring sequentially mounted on the outside of the spring push rod. The spring push rod is arranged in a T-shaped structure, one end of the spring push rod is movably connected to the third rivet, and the other end is fixedly provided with a push rod protrusion compatible with the return spring.
[0008] By adopting the above technical scheme, the rolling bracket is combined with the rolling spring to replace the torsion spring in the prior art, thereby improving the fatigue life, and thus improving the reliability and service life of the overall action. At the same time, the spring push rod, spring bushing and return spring replace the existing tension spring, which also improves the fatigue life and the overall service life of the oven door hinge. The spring push rod and spring bushing can ensure that the return spring is evenly stressed during the action, thereby improving the reliability of the oven door hinge action.
[0009] The utility model is further configured as follows: sliding grooves adapted to the third rivet are provided on both sides of the hinge body, the third rivet slides left and right in the sliding groove, and a limiting sliding groove is also provided on the hinge body, and a limiting rod riveted to the movable clamp is passed through the limiting sliding groove.
[0010] By adopting the above technical solution, the third rivet and the sliding groove cooperate with each other to ensure the reliability of the movable clamp's forward and backward movement. The limiting slide groove and the limiting rod ensure that the movable clamp will not deviate to one side during movement, which also plays a role in improving the reliability of the movement.
[0011] The utility model is further configured as follows: the roller surface is abutted against the inner bottom surface of the hinge body, and rolling grooves adapted to the two ends of the rolling rivet are opened on the left and right sides of the hinge body, and the rolling rivet slides left and right in the rolling grooves.
[0012] By adopting the above technical solution, the roller and the rolling rivet cooperate with each other to facilitate the movable clamp to slide left and right.
[0013] The utility model is further configured as follows: a bracket protrusion matched with the support rod is fixedly provided at the bottom of the hinge body, and a bracket through hole matched with the end of the support rod is opened on the bracket protrusion.
[0014] By adopting the above technical solution, the bracket protrusion and the bracket through hole cooperate with each other to ensure that the support rod slides left and right, which makes it easy for the rolling spring mounted on the support rod to expand and contract, thereby ensuring the reliability of the rolling structure and the movable clamp action.
[0015] The utility model is further configured as follows: a spring limit block is sleeved on the spring push rod and is slidably connected thereto; the upper end of the spring limit block is engaged with the hinge body; a limit protrusion matched with the spring limit block is provided on the hinge body; and the lower end of the spring limit block is connected to the hinge body by providing a spring rivet.
[0016] By adopting the above technical solution, the spring limit block and the push rod protrusion cooperate with each other to facilitate the reset spring to be compressed when the oven door is opened and reset when it is closed.
[0017] The utility model is further configured as follows: the spring bushing includes a fixing plate and two fixing arms fixedly connected to the fixing plate, the cross-section of the fixing arm is arranged in an arc-shaped structure, the end of the fixing arm is provided with a guide chamfer adapted to the reset spring, the fixing plate and the spring limiting block are abutted and connected to each other on one side close to the reset spring, and the spring limiting block and the fixing plate are respectively provided with a limiting through hole and a fixing through hole adapted to the spring push rod.
[0018] By adopting the above technical solution, the guide chamfer facilitates the assembly of the spring bushing, and the fixing plate abuts against the spring limit block to prevent the spring bushing from positional displacement during the telescopic action of the return spring, thereby ensuring the reliability of the action of the spring assembly.
[0019] In summary, the utility model has the following beneficial effects:
[0020] 1. The rolling bracket is combined with the rolling spring to replace the torsion spring in the prior art, thereby improving the fatigue life, thereby improving the reliability and service life of the overall action. At the same time, the spring push rod, spring bushing and return spring replace the existing tension spring, which also improves the fatigue life and the overall service life of the oven door hinge. The spring push rod and spring bushing can ensure that the return spring is evenly stressed during the action, thereby improving the reliability of the oven door hinge action.
[0021] 2. The guide chamfer facilitates the assembly of the spring bushing. The fixing plate abuts against the spring limit block to prevent the spring bushing from shifting during the expansion and contraction of the return spring, thereby ensuring the reliability of the spring assembly. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1It is a three-dimensional diagram of the utility model.
[0023] Figure 2 It is the second stereogram of the utility model.
[0024] Figure 3 It is a top view of the utility model.
[0025] Figure 4 For this utility model Figure 3 Schematic diagram of the cross section at AA in the middle.
[0026] Figure 5 It is an explosion diagram of the utility model.
[0027] Figure numerals: 1. hinge body; 11. sliding groove; 12. limiting slide groove; 13. rolling slide groove; 14. bracket protrusion; 15. limiting protrusion; 2. hinge arm; 21. first rivet; 3. movable clamp; 31. movable part; 32. second rivet; 33. third rivet; 34. limiting rod; 4. rolling rivet; 41. roller; 5. rolling bracket; 51. support rod; 52. rolling spring; 6. spring push rod; 61. push rod protrusion; 7. spring bushing; 71. fixing plate; 72. fixing arm; 73. guide chamfer; 8. reset spring; 9. spring limiting block; 91. spring rivet. DETAILED DESCRIPTION
[0028] The utility model is further described in detail below in conjunction with the accompanying drawings.
[0029] This embodiment discloses an oven door hinge, such as Figures 1 to 5 As shown, it includes a hinge body 1 and a hinge arm 2 matched with the hinge body 1. The hinge body 1 and the hinge arm 2 are hingedly connected to each other by setting a first rivet 21. The hinge body 1 is provided with a movable component and a spring component matched therewith. When the oven door is opened or closed, the hinge arm 2, the movable component and the spring component cooperate with each other to achieve the effect of opening and closing the oven door.
[0030] The movable component includes a movable clamp 3 and a rolling structure. The upper part of the movable clamp 3 is provided with a movable part 31 adapted to the rolling structure. When the oven door is opened, the movable part 31 on the movable clamp 3 cooperates with the rolling structure to balance the force of the oven door and achieve a hovering effect. One end of the movable clamp 3 is hingedly connected to the hinge arm 2 by setting a second rivet 32, and the other end of the movable clamp 3 is movably connected to the spring component by setting a third rivet 33. When the oven door is closed, the spring component drives the movable clamp 3 and then drives the hinge arm 2 to move to close the oven door.
[0031] Sliding grooves 11 compatible with the third rivet 33 are provided on both sides of the hinge body 1. The third rivet 33 slides left and right in the sliding groove 11. The third rivet 33 and the sliding groove 11 cooperate with each other to ensure the reliability of the forward and backward movement of the movable clamp 3. A limiting groove 12 is also provided on the hinge body 1. A limiting rod 34 riveted to the movable clamp 3 is inserted in the limiting groove 12. The limiting groove 12 and the limiting rod 34 ensure that the movable clamp 3 will not deviate to one side when it moves, which also plays a role in improving the reliability of the movement.
[0032] The rolling structure includes a rolling rivet 4 and a roller 41 sleeved on the rolling rivet 4. The surface of the roller 41 is abutted against the inner bottom surface of the hinge body 1. The left and right sides of the hinge body 1 are provided with rolling grooves 13 that are compatible with the two ends of the rolling rivet 4. The rolling rivet 4 slides left and right in the rolling grooves 13. The roller 41 and the rolling rivet 4 cooperate with each other to facilitate the movable clamp 3 to slide left and right. The roller 41 is made of alloy material to increase the service life of the roller 41.
[0033] A rolling bracket 5 compatible with the roller 41 is clamped on the rolling rivet 4, and two support rods 51 integrally arranged therewith are provided on the rolling bracket 5, and a rolling spring 52 compatible with the rolling bracket is sleeved on the support rod 51. A bracket protrusion 14 compatible with the support rod 51 is fixedly provided at the bottom of the hinge body 1, and a bracket through hole compatible with the end of the support rod 51 is opened on the bracket protrusion 14. The rolling spring 52 replaces the torsion spring to extend the fatigue life, thereby ensuring the reliability of the oven door after long-term use. At the same time, the two supports together with the rolling spring 52 sleeved on the support rod 51 can avoid the rolling rivet 4 from being unable to reset and causing the oven door to be stuck when one rolling spring 52 is damaged, thereby ensuring the reliability of the oven door.
[0034] The spring assembly includes a spring push rod 6, a spring bushing 7 and a return spring 8 which are sequentially sleeved on the outside of the spring push rod 6. The spring push rod 6 is arranged in a T-shaped structure. One end of the spring push rod 6 is movably connected to the third rivet 33, and the other end is fixed with a push rod protrusion 61 adapted to the return spring 8. The return spring 8 replaces the tension spring to extend the fatigue life and thus the service life of the spring assembly. The cooperation between the spring push rod 6 and the spring bushing 7 can reduce the deviation of the return spring 8 to one side during use, ensure uniform force, and improve the reliability of the oven door hinge action.
[0035] A spring limit block 9 is sleeved on the spring push rod 6 and is slidably connected to it. The upper end of the spring limit block 9 is engaged with the hinge body 1. The hinge body 1 is provided with a limit protrusion 15 adapted to the spring limit block 9. The lower end of the spring limit block 9 is connected to the hinge body 1 by setting a spring rivet 91. The spring limit block 9 and the push rod protrusion 61 cooperate with each other to facilitate the reset spring 8 to be compressed when the oven door is opened and reset when it is closed.
[0036] The spring bushing 7 includes a fixing plate 71 and two fixing arms 72 fixedly connected to the fixing plate 71. The cross section of the fixing arm 72 is arranged in an arc-shaped structure. The end of the fixing arm 72 is provided with a guide chamfer 73 adapted to the reset spring 8. The guide chamfer 73 facilitates the assembly of the spring bushing 7. The fixing plate 71 and the spring limit block 9 are abutted and connected to each other on the side close to the reset spring 8. The spring limit block 9 and the fixing plate 71 are respectively provided with a limiting through hole and a fixing through hole adapted to the spring push rod 6. The fixing plate 71 abuts against the spring limit block 9 to prevent the spring bushing 7 from positionally shifting during the telescopic action of the reset spring 8, thereby ensuring the reliability of the action of the spring assembly.
[0037] Its working process is as follows: when the oven door is opened, the hinge arm 2 drives the movable clamp 3 to move to the left, and then drives the spring push rod 6 in the spring assembly to move to the left, so that the reset spring 8 is continuously compressed, and at the same time, the rolling structure and the movable clamp 3 cooperate with each other to make the oven door hover; when the oven door is closed, the reset spring 8 in the spring assembly is reset and drives the spring push rod 6 to move to the right, and then drives the movable clamp 3 and the hinge arm 2 to move to the right, so that the oven door is closed.
[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the design concept of the present invention should be included in the protection scope of the present invention.
Claims
1. An oven door hinge, comprising a hinge body (1) and a hinge arm (2) adapted to the hinge body (1), the hinge body (1) and the hinge arm (2) being hinge-connected to each other by means of a first rivet (21), the hinge body (1) being provided with a movable assembly and a spring assembly adapted thereto, characterized in that: The movable assembly comprises a movable clamp (3) and a rolling structure. The upper part of the movable clamp (3) is provided with a movable portion (31) adapted to the rolling structure. One end of the movable clamp (3) is hingedly connected to the hinge arm (2) by arranging a second rivet (32). The other end of the movable clamp (3) is movably connected to the spring assembly by arranging a third rivet (33). The rolling structure comprises a rolling rivet (4) and a roller (41) sleeved on the rolling rivet (4). The rolling rivet (4) is clamped with a roller (41) adapted to the roller (41). The rolling bracket (5) is provided with two support rods (51) integrally arranged therewith, and the support rods (51) are sleeved with rolling springs (52) adapted thereto, the spring assembly comprises a spring push rod (6) and a spring bushing (7) and a return spring (8) sleeved on the outside of the spring push rod (6) in sequence, the spring push rod (6) being arranged in a T-shaped structure, one end of the spring push rod (6) being movably connected to a third rivet (33), and the other end being fixedly provided with a push rod protrusion (61) adapted to the return spring (8).
2. The oven door hinge according to claim 1, characterized in that: Sliding grooves (11) adapted to the third rivet (33) are provided on both sides of the hinge body (1), and the third rivet (33) slides left and right in the sliding groove (11). A limiting sliding groove (12) is also provided on the hinge body (1), and a limiting rod (34) riveted to the movable clamp (3) is inserted into the limiting sliding groove (12).
3. The oven door hinge according to claim 2, characterized in that: The surface of the roller (41) is in contact with the inner bottom surface of the hinge body (1), and rolling grooves (13) matching the two ends of the rolling rivet (4) are provided on the left and right sides of the hinge body (1), and the rolling rivet (4) slides left and right in the rolling grooves (13).
4. The oven door hinge according to claim 1, characterized in that: A support protrusion (14) adapted to the support rod (51) is fixedly provided at the bottom of the hinge body (1), and a support through hole adapted to the end of the support rod (51) is provided on the support protrusion (14).
5. The oven door hinge according to claim 1, characterized in that: The spring push rod (6) is sleeved with a spring limit block (9) which is slidably connected thereto; the upper end of the spring limit block (9) is engaged with the hinge body (1); a limit protrusion (15) which matches the spring limit block (9) is provided on the hinge body (1); and the lower end of the spring limit block (9) is connected to the hinge body (1) by means of a spring rivet (91).
6. The oven door hinge according to claim 5, characterized in that: The spring bushing (7) comprises a fixing plate (71) and two fixing arms (72) fixedly connected to the fixing plate (71); the cross section of the fixing arm (72) is arranged in an arc-shaped structure; the end of the fixing arm (72) is provided with a guide chamfer (73) adapted to the reset spring (8); the fixing plate (71) and the spring limit block (9) are abutted against each other on a side close to the reset spring (8); the spring limit block (9) and the fixing plate (71) are respectively provided with a limiting through hole and a fixing through hole adapted to the spring push rod (6).