Heat treatment uniformity control device for gearbox of automobile seat

Abstract

The utility model provides a heat treatment uniformity control device for a gear box of an automobile seat, belongs to the technical field of manufacturing of automobile parts, and aims to solve the problems that different parts of an existing gear are difficult to reach consistent temperature within the same heating time, and the hardness of a tooth surface is not uniform after quenching. Comprising a heating furnace body, a heating supporting plate, a first driving part, a second driving part, a heating driving motor, a uniform heating mechanism and an elastic clamping mechanism. The heating supporting plate is fixedly connected to the lower end in the heating furnace body. The first driving part is rotationally connected to the upper part of the heating supporting plate; the second driving part is rotationally connected to the inner side of the heating furnace main body; the heating driving motor is fixedly connected to the lower end of the heating supporting plate; the uniform heating mechanism is arranged above the heating support plate; the elastic clamping mechanism is arranged in the heating furnace body, it is guaranteed that the gear is comprehensively and evenly heated, the service life of the gear is prolonged, and the performance of the gear is improved.

Description

Technical Field

[0001] This utility model belongs to the field of automotive parts manufacturing technology, and more specifically, it relates to a device for controlling the uniformity of heat treatment in automotive seat gearboxes. Background Technology

[0002] As an important human-machine interaction component in a car, the reliability and comfort of the adjustment function of the car seat largely depend on the performance of the seat gearbox. The seat gearbox needs to frequently withstand various complex loads, which requires the internal gears to have high hardness, good wear resistance, and dimensional stability. The heat treatment process is a key link to improve the overall performance of the gears. When heat treating the gears, the gears are generally placed in an electric resistance furnace, where heat is generated by the resistance wire, and the temperature inside the furnace gradually rises, thereby heating the gears.

[0003] The existing application number is CN202120899841.6. This utility model discloses a gear heat treatment furnace, including a base plate, a support leg fixedly connected to the lower surface of the base plate, a shell provided on the upper surface of the base plate, an end cap provided on the upper surface of the shell, a safety valve fixedly connected to the upper surface of the end cap, and a base provided on the upper surface of the end cap. In this utility model, by configuring an electric heating device, a ring-shaped platform, and heat dissipation components on the lower surface of the base plate, the device itself has the ability to heat treat the gears and quickly dissipate heat after the treatment. The heat dissipation components are connected to the platform to facilitate heat conduction, thereby accelerating the heat dissipation of the device and improving working efficiency. Furthermore, by configuring a temperature control knob, a thermometer, and a safety valve, the device itself has the ability to regulate the processing temperature inside the shell. The bottom of the thermometer penetrates through the end cap, allowing real-time monitoring of the temperature inside the shell. The application of the safety valve ensures that the device will not be damaged due to excessive temperature.

[0004] Based on the above, due to the complex structure of gears, which have different parts such as teeth and hubs, their heat dissipation and heating conditions vary. During the heating process, the teeth are relatively thin, so they dissipate heat quickly and heat up relatively slowly; while the hub is thicker, has a large heat capacity, and heats up relatively quickly. This difference makes it difficult for different parts of the gear to reach a consistent temperature within the same heating time. After quenching, the hardness of the tooth surface is uneven, which affects the meshing performance and service life of the gear. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model provides a heat treatment uniformity control device for automotive seat gearboxes. This device solves the problem that existing gears, due to their complex structure and the varying heat dissipation and heating conditions of different parts such as teeth and hubs, suffer from uneven hardness after quenching. During heating, the relatively thin teeth dissipate heat quickly but heat up relatively slowly, while the thicker hub has a larger heat capacity and heats up relatively quickly. This difference makes it difficult for different parts of the gear to reach a uniform temperature within the same heating time, resulting in uneven tooth surface hardness and affecting the gear's meshing performance and service life.

[0006] The purpose and effectiveness of this utility model's automotive seat gearbox heat treatment uniformity control device are achieved through the following specific technical means:

[0007] A heat treatment uniformity control device for automotive seat gearboxes includes a heating furnace body, a heating support plate, a first driving component, a second driving component, a heating drive motor, a uniform heating mechanism, and an elastic clamping mechanism. The heating support plate is fixedly connected to the lower end of the heating furnace body. The first driving component is rotatably connected to the upper part of the heating support plate. The second driving component is a cylindrical structure and is rotatably connected to the inner side of the heating furnace body. The heating drive motor is fixedly connected to the lower end of the heating support plate, and the rotating shaft of the heating drive motor is coaxially fixedly connected to the first driving component. The uniform heating mechanism is located above the heating support plate. The elastic clamping mechanism is located inside the heating furnace body.

[0008] Furthermore, the uniform heating mechanism includes: a first driving gear, a second driving gear, and a third driving gear; the first driving gear is coaxially fixedly connected to the lower end of the outer periphery of the first driving member; two sets of the second driving gear are provided, and the two sets of second driving gears are rotatably connected above the heating support plate, and the two sets of second driving gears mesh with the outer side of the first driving gear; the third driving gear is coaxially fixedly connected to the lower end of the second driving member, and the inner side of the third driving gear meshes with the two sets of second driving gears. The first driving gear, the second driving gear, and the third driving gear together form a planetary gear structure.

[0009] Furthermore, the uniform heating mechanism also includes a heating placement platform; the heating placement platform is fixedly connected to the outer periphery of the first driving member.

[0010] Furthermore, the uniform heating mechanism also includes a heating element; the heating element is a corrugated resistance wire structure, and the heating element is fixedly connected to the inner side of the second driving element.

[0011] Furthermore, the elastic clamping mechanism includes: a clamping connector and a clamping drive air pump; the clamping connector is a rotary joint structure, which is rotatably connected to the outside of the first drive member and communicates with the interior of the first drive member; the clamping drive air pump is a constant pressure air pump structure, which is fixedly connected to the lower interior of the heating furnace body, and the air outlet pipe of the clamping drive air pump communicates with the interior of the clamping connector.

[0012] Furthermore, the elastic clamping mechanism also includes a heating clamping component; the heating clamping component is provided in three sets, and the three sets of heating clamping components are slidably connected to the upper inner part of the first driving component.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] This invention utilizes a uniform heating mechanism. When the heating element is activated, it emits heat. The wave-like structure of the heating element ensures more even heating of the gear, balancing the temperature difference between the gear's edge and center, thus improving the heating effect and the quality of the gear heat treatment process. Activating the heating drive motor causes its shaft to rotate, driving the first drive gear, which in turn drives the second drive gear, and finally the third drive gear. Simultaneously, the first and second drive elements rotate in opposite directions, causing the gears and heating element to rotate in opposite directions. This ensures synchronized gear heating and avoids uneven heating caused by uneven resistance in certain areas of the heating element, guaranteeing comprehensive and uniform heating of the gear and improving its service life and performance.

[0015] This invention utilizes an elastic clamping mechanism. When the clamping drive air pump is activated, it injects constant-pressure gas into the clamping connector. The constant-pressure gas then enters the first drive component through the clamping connector. At this point, the air pressure pushes the heated clamping component to move outward. This outward movement of the heated clamping component achieves tension clamping of the gear. When heating the gear, the heated clamping component allows the gear to undergo slight deformation due to heat, preventing the fixture from over-clamping the gear, reducing gear deformation during heating, and improving the precision of gear machining. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0017] Figure 2 This is a schematic diagram of the heating element structure of this utility model.

[0018] Figure 3 This is a schematic diagram of the first drive gear structure of this utility model.

[0019] Figure 4This is a schematic diagram of the heating clamping component of this utility model.

[0020] Figure 5 This is a schematic diagram of the clamping drive air pump structure of this utility model.

[0021] In the diagram, the correspondence between component names and drawing numbers is as follows:

[0022] 1. Heating furnace body; 101. First drive gear; 102. Second drive gear; 103. Third drive gear; 104. Heating placement platform; 105. Heating element; 2. Heating support plate; 201. Clamping connector; 202. Clamping drive air pump; 203. Heating clamping element; 3. First drive element; 4. Second drive element; 5. Heating drive motor. Detailed Implementation

[0023] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples.

[0024] Example 1:

[0025] As attached Figures 1 to 5 As shown:

[0026] This utility model provides a heat treatment uniformity control device for automotive seat gearboxes, including a heating furnace body 1, a heating support plate 2, a first driving component 3, a second driving component 4, a heating drive motor 5, and a uniform heating mechanism; the heating support plate 2 is fixedly connected to the lower end of the interior of the heating furnace body 1; the first driving component 3 is rotatably connected to the upper part of the heating support plate 2; the second driving component 4 has a cylindrical structure and is rotatably connected to the inner side of the heating furnace body 1; the heating drive motor 5 is fixedly connected to the lower end of the heating support plate 2, and the rotating shaft of the heating drive motor 5 is coaxially fixedly connected to the first driving component 3; the uniform heating mechanism is arranged above the heating support plate 2.

[0027] The uniform heating mechanism includes: a first drive gear 101, a second drive gear 102, a third drive gear 103, a heating platform 104, and a heating element 105. The first drive gear 101 is coaxially fixedly connected to the lower end of the outer periphery of the first drive element 3. Two sets of second drive gears 102 are provided, and the two sets of second drive gears 102 are rotatably connected to the upper part of the heating support plate 2, and the two sets of second drive gears 102 mesh with the outer side of the first drive gear 101. The third drive gear 103 is coaxially fixedly connected to the lower end of the second drive element 4, and the inner side of the third drive gear 103 meshes with the two sets of second drive gears 102. The first drive gear 101, the second drive gear 102, and the third drive gear 103 together form a planetary gear structure. The heating platform 104 is fixedly connected to the outer periphery of the first drive element 3. The heating element 105 is a wavy resistance wire structure and is fixedly connected to the inner side of the second drive element 4.

[0028] The specific usage and function of this embodiment are as follows: When heat treatment of the gear is required, the gear is inserted into the outside of the first driving member 3, so that the lower end of the gear contacts the heating platform 104. The heating member 105 is turned on, and the heating member 105 emits heat. The wavy structure of the heating member 105 makes the heating of the gear more even, balancing the temperature difference between the edge and center of the gear, improving the heating effect of the gear, and improving the quality of the gear heat treatment process. The heating drive motor 5 is turned on, and the rotating shaft of the heating drive motor 5 drives the first drive gear 101 to rotate. The rotation of the first drive gear 101 drives the second drive gear 102 to rotate, and the rotation of the second drive gear 102 drives the third drive gear 103 to rotate. At this time, the first driving member 3 and the second driving member 4 are driven to rotate. The second driving member 4 and the first driving member 3 rotate in opposite directions, causing the gear and the heating member 105 to rotate in opposite directions, ensuring the synchronization of gear heating, and avoiding the problem of uneven heating of the gear caused by uneven resistance in some parts of the heating member 105. This ensures that the gear is heated evenly and comprehensively, improving the service life and performance of the gear.

[0029] Example 2:

[0030] This utility model provides a device for controlling the uniformity of heat treatment in automotive seat gearboxes, based on Embodiment 1, such as... Figures 1 to 5 As shown, it also includes an elastic clamping mechanism, which is disposed inside the heating furnace body 1.

[0031] The elastic clamping mechanism includes: a clamping connector 201, a clamping drive air pump 202, and a heating clamping member 203; the clamping connector 201 is a rotary joint structure, which is rotatably connected to the outside of the first drive member 3 and communicates with the interior of the first drive member 3; the clamping drive air pump 202 is a constant pressure air pump structure, which is fixedly connected to the lower end of the interior of the heating furnace body 1, and the air outlet pipe of the clamping drive air pump 202 communicates with the interior of the clamping connector 201; three sets of heating clamping members 203 are provided, and the three sets of heating clamping members 203 are slidably connected to the upper end of the interior of the first drive member 3.

[0032] The specific usage and function of this embodiment are as follows: After the gear is placed on the outside of the first driving member 3, the clamping drive air pump 202 is turned on. The clamping drive air pump 202 fills the inside of the clamping connector 201 with constant pressure gas. The constant pressure gas enters the inside of the first driving member 3 through the clamping connector 201. At this time, the air pressure pushes the heating clamping member 203 to move outward. The outward movement of the heating clamping member 203 realizes the tension clamping of the gear. When heating the gear, the heating clamping member 203 allows the gear to undergo slight deformation due to heat, avoiding excessive clamping of the gear by the fixture, reducing the deformation of the gear during heating, and improving the accuracy of gear processing.

[0033] The following points should be noted in this article:

[0034] 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in general design.

[0035] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0036] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A device for controlling the uniformity of heat treatment in automotive seat gearboxes, characterized in that: The furnace includes a heating furnace body (1), a heating support plate (2), a first driving component (3), a second driving component (4), a heating drive motor (5), a uniform heating mechanism, and an elastic clamping mechanism. The heating support plate (2) is fixedly connected to the lower end of the heating furnace body (1). The first driving component (3) is rotatably connected to the upper part of the heating support plate (2). The second driving component (4) is a cylindrical structure and is rotatably connected to the inner side of the heating furnace body (1). The heating drive motor (5) is fixedly connected to the lower end of the heating support plate (2), and the rotating shaft of the heating drive motor (5) is coaxially fixedly connected to the first driving component (3). The uniform heating mechanism is located above the heating support plate (2). The elastic clamping mechanism is located inside the heating furnace body (1).

2. The heat treatment uniformity control device for automotive seat gearboxes as described in claim 1, characterized in that: The uniform heating mechanism includes a first drive gear (101), a second drive gear (102), and a third drive gear (103). The first drive gear (101) is coaxially fixedly connected to the lower outer periphery of the first drive member (3). Two sets of the second drive gear (102) are provided, and the two sets of second drive gears (102) are rotatably connected above the heating support plate (2). The two sets of second drive gears (102) mesh with the outer side of the first drive gear (101). The third drive gear (103) is coaxially fixedly connected to the lower end of the second drive member (4). The inner side of the third drive gear (103) meshes with the two sets of second drive gears (102). The first drive gear (101), the second drive gear (102), and the third drive gear (103) together form a planetary gear structure.

3. The heat treatment uniformity control device for automotive seat gearboxes as described in claim 2, characterized in that: The uniform heating mechanism further includes a heating platform (104); the heating platform (104) is fixedly connected to the outer periphery of the first driving member (3).

4. The heat treatment uniformity control device for automotive seat gearboxes as described in claim 3, characterized in that: The uniform heating mechanism further includes a heating element (105); the heating element (105) is a wavy resistance wire structure, and the heating element (105) is fixedly connected to the inner side of the second driving element (4).

5. The heat treatment uniformity control device for automotive seat gearboxes as described in claim 1, characterized in that: The elastic clamping mechanism includes a clamping connector (201) and a clamping drive air pump (202); the clamping connector (201) is a rotary joint structure, the clamping connector (201) is rotatably connected to the outside of the first drive member (3), and the clamping connector (201) is in communication with the inside of the first drive member (3); the clamping drive air pump (202) is a constant pressure air pump structure, the clamping drive air pump (202) is fixedly connected to the lower end of the inside of the heating furnace body (1), and the air outlet pipe of the clamping drive air pump (202) is in communication with the inside of the clamping connector (201).

6. The heat treatment uniformity control device for automotive seat gearboxes as described in claim 5, characterized in that: The elastic clamping mechanism further includes a heating clamping member (203); the heating clamping member (203) is provided in three sets, and the three sets of heating clamping members (203) are slidably connected to the upper inner end of the first driving member (3).

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