Cam disc transmission device of automobile air conditioner

Abstract

The utility model relates to a cam disc transmission device of an automobile air conditioner, which belongs to the field of automobile air conditioner switches and comprises a cavity, a transmission mechanism is arranged in the cavity, the back wall of the cavity is rotatably connected with a cam main body through a bearing, a springback component is arranged in the cavity, a rocker arm horizontally slides on the back wall of an inner cavity of the cavity, and the rocker arm is connected with the transmission mechanism. A fixing plate is fixed to the left side of the rocker arm, the front face of the fixing plate is rotationally connected with a rotating disc through a bearing, and an inhaul cable is installed on the right side of the rocker arm. According to the automobile air conditioner cam disc transmission device, by rotating the rotary knob, the fixing rod drives the cam body to rotate and pushes the rocker arm to move, the inhaul cable pulls an air door of an external automobile air conditioner to move, control over the air door of the air conditioner can be achieved, and the purpose of limiting the air door of the air conditioner can be achieved through self-locking of the worm gear and the worm; the rocker arm has the advantage of being provided with a limiting structure, and the problem that the rocker arm easily pushes the cam to start overturning due to reset of the spring is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile air-conditioning switches, in particular to an automobile air-conditioning cam plate transmission device. Background Art

[0002] With the development of science and technology and the improvement of people's living standards, more and more people own their own cars. In this environment, the comfort of cars is increasingly valued by people. In order to provide passengers with a comfortable riding environment, reduce the driver's fatigue intensity and improve safety, car air-conditioning systems are generally installed in cars. Since the heating of the car air-conditioning is completed by the heat of the engine cooling water and the heat of the glass heating wire, the car air-conditioning only has the meaning of cooling. If the car air-conditioning compressor is always in working condition, it will inevitably cause an increase in fuel consumption and engine burden. Therefore, when using the warm air, the car air-conditioning switch must be turned off to avoid the compressor running when using the warm air, resulting in additional fuel consumption when using the warm air. The car air-conditioning system has become one of the important signs to measure whether the car functions are complete. When the car air-conditioning is turned on, the operator can control the direction of the car's air door to deliver wind in different directions to meet the needs of the passengers.

[0003] For example, Chinese patent CN 206847024 U discloses a cam plate transmission device for an automobile air conditioner, comprising a driving gear and a rocker arm for inputting a switch command, wherein the driving gear is meshed with a passive gear, the driving gear is connected to a switch knob on the automobile air conditioner panel, the passive gear is fixedly connected to the cam, and further comprises a turntable, a telescopic rod and a reset spring for resetting the telescopic rod, the rocker arm is fixedly connected to the turntable, the turntable is rotatably connected to the telescopic rod, the reset spring is arranged between the telescopic joints of the telescopic rod, the rocker arm is connected to a cable for controlling the damper of the automobile air conditioner, the zipper is located at the upper end of the rocker arm, and the cam abuts against the lower end of the rocker arm.

[0004] The above-mentioned automobile air-conditioning cam plate transmission device still has certain shortcomings. It solves the problem that the rocker arm is easily damaged during the rotation process by buffering the force of the cam on the rocker arm. However, after the cam is adjusted to rotate, it lacks a corresponding limiting structure, which makes it easy for the rocker arm to push the cam to start flipping due to the reset of the spring, thereby reducing its practicality. Therefore, the present application proposes an automobile air-conditioning cam plate transmission device to solve the above-mentioned problem. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a cam plate transmission device for an automobile air conditioner, which has the advantage of a limiting structure and solves the problem that after the cam is adjusted to rotate, there is a lack of a corresponding limiting structure, which makes it easy for the rocker arm to push the cam to start flipping due to the resetting of the spring.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a cam plate transmission device for an automobile air conditioner, comprising a cavity, a transmission mechanism is arranged inside the cavity, a cam body is rotatably connected to the back wall of the cavity through a bearing, a rebound assembly is arranged inside the cavity, a rocker arm is horizontally slidable on the back wall of the cavity, a fixed plate is fixed on the left side of the rocker arm, a rotating disk is rotatably connected to the front side of the fixed plate through a bearing, and a cable is installed on the right side of the rocker arm;

[0007] The transmission mechanism includes a bracket fixed to the bottom wall of the cavity, the left side of the bracket is rotatably connected to a mounting rod through a bearing, a worm wheel is fixed to the outer side of the mounting rod, a worm is meshed with the outer side of the worm wheel, a first gear is fixed to the left end of the mounting rod, a second gear is meshed with the outer side of the first gear, and a fixing rod is fixed inside the second gear.

[0008] Furthermore, the cam body is movably fitted on the right side of the rocker arm.

[0009] Furthermore, the transmission mechanism also includes a connecting rod fixed to the bottom end of the worm, the bottom end of the connecting rod passes through the inner bottom wall of the cavity and extends to the bottom of the cavity and is fixed with a knob.

[0010] Furthermore, the fixing rod is fixed on the front side of the cam body.

[0011] Furthermore, the worm is rotatably connected to the lower surface of the bracket via a bearing, and the worm is rotatably connected to the inner bottom wall of the cavity via a bearing.

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

[0013] Furthermore, the rebound assembly includes a connecting column fixed on the left side of the fixed plate, a movable plate is fixed to the left end of the connecting column, two springs are fixed to the left side of the movable plate, two dampers are fixed to the left side of the movable plate, and a box body is slidably connected to the outer side of the connecting column, and the two springs and dampers are fixed to the left side wall of the inner cavity of the box body.

[0014] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0015] The automobile air-conditioning cam plate transmission device, by turning the knob, causes the fixed rod to drive the cam body to start rotating, and pushes the rocker arm to start moving, so that the cable pulls the air door of the external automobile air-conditioning to start moving, and the air-conditioning air door can be controlled, and the self-locking of the worm wheel and the worm can achieve the purpose of limiting the position of the air-conditioning air door. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the transmission mechanism of the utility model;

[0018] Figure 3 This is a three-dimensional diagram of the fixing rod structure of the utility model.

[0019] In the figure: 1 cavity, 2 transmission mechanism, 201 bracket, 202 mounting rod, 203 worm wheel, 204 worm, 205 first gear, 206 second gear, 207 fixing rod, 208 knob, 3 cam body, 4 rebound assembly, 5 turntable, 6 cable, 7 rocker arm, 8 fixing plate. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1 A car air-conditioning cam plate transmission device in this embodiment includes a cavity 1, a transmission mechanism 2 is arranged inside the cavity 1, a cam body 3 is rotatably connected to the back wall of the cavity 1 through a bearing, a rebound component 4 is arranged inside the cavity 1, a rocker arm 7 is horizontally slidable on the back wall of the inner cavity of the cavity 1, a fixed plate 8 is fixed to the left side of the rocker arm 7, a turntable 5 is rotatably connected to the front side of the fixed plate 8 through a bearing, and a cable 6 is installed on the right side of the rocker arm 7, and the cable 6 is used to control the damper of the external car air-conditioning.

[0022] The cam body 3 is movably fitted on the right side of the rocker arm 7, and the rebound assembly 4 includes a connecting column fixed on the left side of the fixed plate 8, a movable plate is fixed to the left end of the connecting column, two springs are fixed to the left side of the movable plate, two dampers are fixed to the left side of the movable plate, and a box body is slidably connected to the outer side of the connecting column, and the two springs and the damper are fixed to the left side wall of the inner cavity of the box body.

[0023] See also Figure 2-3 In order to limit the air-conditioning damper, the transmission mechanism 2 in this embodiment includes a bracket 201 fixed to the bottom wall of the cavity 1, and the left side of the bracket 201 is rotatably connected to a mounting rod 202 through a bearing, a worm gear 203 is fixed to the outer side of the mounting rod 202, and a worm 204 is meshed with the outer side of the worm gear 203, a first gear 205 is fixed to the left end of the mounting rod 202, a second gear 206 is meshed with the outer side of the first gear 205, and a fixing rod 207 is fixed inside the second gear 206.

[0024] In this example, the transmission mechanism 2 also includes a connecting rod fixed to the bottom end of the worm 204. The bottom end of the connecting rod passes through the inner bottom wall of the cavity 1 and extends to the bottom of the cavity 1 and is fixed with a knob 208. The fixing rod 207 is fixed to the front of the cam body 3. By turning the knob 208, the worm 204 drives the worm wheel 203 to rotate, and drives the mounting rod 202 to rotate. Since the first gear 205 is fixed to the outside of the mounting rod 202, the first gear 205 starts to drive the second gear 206 to rotate, so that the fixing rod 207 drives the cam body 3 to start The worm 204 is rotatably connected to the lower surface of the bracket 201 through a bearing, and the worm 204 is rotatably connected to the inner bottom wall of the cavity 1 through a bearing. The outer diameter of the first gear 205 is greater than the outer diameter of the second gear 206. The self-locking of the worm wheel 203 and the worm 204 can achieve the purpose of limiting the air conditioning damper. When the knob 208 is reset, the spring will start to reset and push the rocker arm 7 to start moving to the right.

[0025] It should be noted that by turning the knob 208, the fixed rod 207 drives the cam body 3 to start rotating, and pushes the rocker arm 7 to start moving, so that the cable 6 pulls the damper of the external automobile air conditioner to start moving, thereby realizing the control of the air-conditioning damper, and the self-locking of the worm gear 203 and the worm 204 can achieve the purpose of limiting the air-conditioning damper.

[0026] It is understandable that in the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood through specific circumstances. At the same time, the parts not described in detail in the present invention are all well-known technologies of those skilled in the art.

[0027] The working principle of the above embodiment is:

[0028] Since the cable 6 is connected to the damper of the external automobile air conditioner, by turning the knob 208, the worm 204 drives the worm wheel 203 to rotate, and drives the mounting rod 202 to rotate. Since the first gear 205 is fixed on the outside of the mounting rod 202, the first gear 205 starts to drive the second gear 206 to rotate, so that the fixed rod 207 drives the cam body 3 to start rotating, and pushes the rocker arm 7 to start moving, so that the cable 6 pulls the damper of the external automobile air conditioner to start moving, which can realize the control of the air conditioning damper, and the self-locking of the worm wheel 203 and the worm 204 can achieve the purpose of limiting the air conditioning damper. When the knob 208 is reset, the spring will start to reset and push the rocker arm 7 to start moving to the right.

[0029] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0030] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention.

Claims

1. A cam plate transmission device for an automobile air conditioner, comprising a cavity (1), characterized in that: A transmission mechanism (2) is provided inside the cavity (1); a cam body (3) is rotatably connected to the back wall of the cavity (1) via a bearing; a rebound assembly (4) is provided inside the cavity (1); a rocker arm (7) is horizontally slidable on the back wall of the inner cavity of the cavity (1); a fixed plate (8) is fixed to the left side of the rocker arm (7); a rotating disk (5) is rotatably connected to the front side of the fixed plate (8) via a bearing; and a cable (6) is installed on the right side of the rocker arm (7); The transmission mechanism (2) comprises a bracket (201) fixed to the inner bottom wall of the cavity (1); the left side of the bracket (201) is rotatably connected to a mounting rod (202) via a bearing; a worm wheel (203) is fixed to the outer side of the mounting rod (202); a worm (204) is meshed with the outer side of the worm wheel (203); a first gear (205) is fixed to the left end of the mounting rod (202); a second gear (206) is meshed with the outer side of the first gear (205); and a fixing rod (207) is fixed inside the second gear (206).

2. The automobile air conditioner cam plate transmission device according to claim 1, characterized in that: The cam body (3) is movably fitted on the right side of the rocker arm (7).

3. The automobile air conditioner cam plate transmission device according to claim 1, characterized in that: The transmission mechanism (2) further comprises a connecting rod fixed to the bottom end of the worm (204); the bottom end of the connecting rod penetrates the inner bottom wall of the cavity (1) and extends to the bottom of the cavity (1) and is fixed with a knob (208).

4. The automobile air conditioner cam plate transmission device according to claim 1, characterized in that: The fixing rod (207) is fixed on the front side of the cam body (3).

5. The automobile air conditioner cam plate transmission device according to claim 1, characterized in that: The worm (204) is rotatably connected to the lower surface of the bracket (201) via a bearing, and the worm (204) is rotatably connected to the inner bottom wall of the cavity (1) via a bearing.

6. The automobile air conditioner cam plate transmission device according to claim 1, characterized in that: The outer diameter of the first gear (205) is greater than the outer diameter of the second gear (206).

7. The automobile air conditioner cam plate transmission device according to claim 1, characterized in that: The rebound assembly (4) comprises a connecting column fixed to the left side of the fixed plate (8), a movable plate fixed to the left end of the connecting column, two springs fixed to the left side of the movable plate, two dampers fixed to the left side of the movable plate, a box body slidably connected to the outer side of the connecting column, and the two springs and dampers are fixed to the left side wall of the inner cavity of the box body.

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