Lubricating oil-free focusing structure and lamp

Abstract

The utility model relates to the technical field of lamps, and discloses a focusing structure without lubricating oil, which comprises a base, a through-type screw rod motor, a lens and a lens support, the through-type screw rod motor comprises a motor main body, a shaft sleeve and a screw rod, the motor main body is arranged on the base, a Teflon coating is arranged on the screw rod, and the lens support is arranged on the shaft sleeve. The shaft sleeve is arranged in the motor main body, the screw rod is in threaded fit with the shaft sleeve, the shaft sleeve is an engineering plastic Eigos shaft sleeve, the lens is connected to the lens support, a connecting screw rod is arranged at the top of the screw rod, and the connecting screw rod is connected with the motor main body. The connecting screw rod sequentially penetrates through the lens bracket and the lens from bottom to top and is locked on the lens through a self-locking nut; the utility model further discloses a lamp using the focusing structure without lubricating oil. Lubricating oil does not need to be added, friction force is reduced, operation is smoother, and cleaning and maintenance are easy.

Description

Technical Field

[0001] The utility model relates to the technical field of lamps, in particular to a focusing structure and a lamp that do not require lubricating oil. Background Art

[0002] In a conventional focusing structure, it is a common practice to apply lubricating oil on the lead screw. However, during the long-term operation of the lamp, heat will be generated. If the lens seal is not good, external dust and moisture may invade the lens interior, accelerating the volatilization of the lubricating oil. The lubricating oil will gradually volatilize during use, especially in a high-temperature environment, and the volatilization rate of the lubricating oil will increase. Over time, after the lubricating oil inside the lens volatilizes, it may condense on the internal lens of the lens, forming oil stains. First of all, this situation has a relatively minor impact on imaging, but after a long time, it may corrode the lens coating, especially old lenses are more easily affected. If the oil stains formed after the volatilization of the lubricating oil are not processed in time, it may cause long-term damage to the lens, affecting its service life and imaging quality; secondly, after the volatilization of the lubricating oil, it is easy to cause an increase in the friction force of the focusing components, and even jamming may occur, affecting the normal use of the lamp performance; finally, the lubricating oil needs to be replenished and replaced regularly, and the operation of frequently adding lubricating oil is very cumbersome, which not only increases the maintenance cost, but also consumes a lot of time and manpower, and may introduce impurities due to improper operation, affecting the focusing stability. Content of the Utility Model

[0003] The purpose of the utility model is to provide a focusing structure and a lamp that do not require lubricating oil, which can reduce the friction force without adding lubricating oil, make the operation smoother, and are easy to clean and maintain.

[0004] To achieve the above object, the utility model provides a focusing structure that does not require lubricating oil, including a base, a through-type lead screw motor, a lens and a lens bracket. The through-type lead screw motor includes a motor main body, a bushing and a lead screw. The motor main body is installed on the base. The lead screw is provided with a Teflon coating. The bushing is arranged inside the motor main body. The lead screw is in threaded cooperation with the bushing. The bushing is an engineering plastic igus bushing. The lens is connected to the lens bracket. A connecting screw is arranged at the top of the lead screw. The connecting screw sequentially passes through the lens bracket and the lens from bottom to top and is locked on the lens by a self-locking nut.

[0005] As a preferred solution of the utility model, a motor bracket is arranged on the motor main body, and the motor bracket is connected to the base through shock-absorbing rubber screws.

[0006] As a preferred embodiment of the present utility model, shock-absorbing rubber screws are connected to both sides of the motor bracket. The bottom of the shock-absorbing rubber screws is installed on the base. The shock-absorbing rubber screws pass through the connection holes of the motor bracket and are threadedly connected to fixing nuts. A lock washer is clamped between the fixing nuts and the motor bracket.

[0007] As a preferred embodiment of the present utility model, a mating notch adapted to the through-type lead screw motor is provided at the bottom of the outer periphery of the lens bracket.

[0008] As a preferred embodiment of the present utility model, three through-type lead screw motors are provided and are circumferentially spaced along the center of the lens on the base.

[0009] The present utility model provides a lamp, which includes a lamp housing, a lamp cover and the focus adjustment structure without lubricating oil, and the focus adjustment structure without lubricating oil is arranged in the lamp housing.

[0010] Compared with the prior art, the focus adjustment structure without lubricating oil and the lamp of the embodiment of the present utility model have the following beneficial effects:

[0011] The Teflon coating on the lead screw of the present utility model has good wear resistance, corrosion resistance, non-stickiness and high temperature resistance. In this way, during the actual operation of the lamp, the friction force is greatly reduced. At the same time, it is combined with a high-performance engineering plastic igus bushing with self-lubricating characteristics. When the engineering plastic igus bushing contacts and moves with the lead screw, low friction can be achieved, which can greatly reduce the friction force between the contact surfaces, make the components run more smoothly, reduce energy consumption, eliminate the need for additional lubricating oil, avoid the generation of oil stains, the surface of the lead screw is not easy to adhere substances, is easy to clean and maintain, reduces the maintenance cost and time, and improves the use efficiency of the lamp; the lead screw with a Teflon coating and the engineering plastic igus bushing can still maintain stable performance in a high-temperature environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the accompanying drawings of the embodiments will be briefly introduced below.

[0013] Figure 1 is an exploded view of a focus adjustment structure without lubricating oil provided by the present utility model;

[0014] Figure 2 is a cross-sectional view of a lamp provided by the present utility model;

[0015] In the figure, there are base 1, through-type lead screw motor 2, motor body 21, motor bracket 211, bushing 22, lead screw 23, connecting screw 24, self-locking nut 25, shock-absorbing rubber screw 26, fixing nut 27, lock washer 28, lens 3, lens bracket 4, mating notch 41, lamp housing 5, and lamp cover 6. Detailed implementation mode

[0016] The following combines the drawings and embodiments to further describe in detail the specific implementation mode of the present utility model. The following embodiments are used to illustrate the present utility model, but are not used to limit the scope of the present utility model.

[0017] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model.

[0018] As Figures 1 to 2 shown, a focusing structure without lubricating oil in a preferred embodiment of the present utility model includes a base 1, a through-type lead screw motor 2, a lens 3, and a lens bracket 4. The through-type lead screw motor 2 includes a motor body 21, a bushing 22, and a lead screw 23. The motor body 21 is installed on the base 1. The lead screw 23 is provided with a Teflon coating. The bushing 22 is arranged in the motor body 21. The lead screw 23 is in threaded cooperation with the bushing 22. The bushing 22 is an engineering plastic igus bushing 22. The lens 3 is connected to the lens bracket 4. A connecting screw 24 is provided at the top of the lead screw 23. The connecting screw 24 passes through the lens bracket 4 and the lens 3 from bottom to top and is locked on the lens 3 by a self-locking nut 25.

[0019] The Teflon coating on the lead screw 23 of the present utility model has good wear resistance, corrosion resistance, non-stickiness, and high temperature resistance, etc. In this way, during the actual operation of the lamp, its friction force is greatly reduced. At the same time, it is combined with the high-performance engineering plastic igus bushing 22 with self-lubricating characteristics. When the engineering plastic igus bushing 22 and the lead screw 23 come into contact and move with each other, low friction can be achieved, which can greatly reduce the friction force between the contact surfaces, make the components run more smoothly, reduce energy consumption, eliminate the need for additional lubricating oil, avoid the generation of oil stains, the surface of the lead screw 23 is not easy to adhere substances, is easy to clean and maintain, reduces the maintenance cost and time, and improves the use efficiency of the lamp; the lead screw 23 with a Teflon coating and the engineering plastic igus bushing 22 can still maintain stable performance in a high-temperature environment.

[0020] Exemplarily, a motor bracket 211 is provided on the motor body 21, and the motor bracket 211 is connected to the base 1 through a shock-absorbing rubber screw 26, which effectively absorbs the vibration of the motor body 21 and avoids the influence of the vibration of the motor body 21 on the light output effect of the lamp.

[0021] Exemplarily, the shock-absorbing rubber screws 26 are connected to both sides of the motor bracket 211, the bottom of the shock-absorbing rubber screws 26 is installed on the base 1, the shock-absorbing rubber screws 26 pass through the connecting hole of the motor bracket 211 and are threadedly connected to the fixing nut 27, and an anti-loosening gasket 28 is sandwiched between the fixing nut 27 and the motor bracket 211 to improve the connection stability between the motor bracket 211 and the shock-absorbing rubber screws 26, avoid the vibration of the motor body 21 causing the bracket screws to move, and ensure the reliability of the structure.

[0022] Exemplarily, the outer bottom of the lens holder 4 is provided with a matching notch 41 that matches with the through-type lead screw motor 2, so as to ensure that when the lens holder 4 is lowered to the lowest position, the lens holder 4 can be close to the light source to achieve a wide focusing range.

[0023] In this embodiment, three through-type lead screw motors 2 are provided and are spaced apart on the base 1 along the central circumference of the lens 3 , thereby improving the stability of the focusing structure during operation and reducing the shaking of the lens holder 4 and the lens 3 .

[0024] The utility model also provides a lamp, comprising a lamp housing 5, a lamp cover 6 and the focusing structure that does not require lubricating oil. The focusing structure that does not require lubricating oil is arranged in the lamp housing 5. Since the lamp is provided with the focusing structure that does not require lubricating oil, it has all the beneficial effects of the above-mentioned focusing structure that does not require lubricating oil, which are not described one by one here.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" 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 an indirect connection 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 according to specific circumstances.

[0026] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principle of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A focusing structure without lubricating oil, characterized in that: It includes a base, a through-type lead screw motor, a lens and a lens holder, wherein the through-type lead screw motor includes a motor body, a sleeve and a lead screw, wherein the motor body is mounted on the base, the lead screw is provided with a Teflon coating, the sleeve is arranged in the motor body, the lead screw is threadedly matched with the sleeve, the sleeve is an engineering plastic Igus sleeve, the lens is connected to the lens holder, a connecting screw is arranged on the top of the lead screw, the connecting screw passes through the lens holder and the lens in sequence from bottom to top and is locked on the lens through a self-locking nut.

2. The focusing structure without lubricating oil as claimed in claim 1, characterized in that: The motor body is provided with a motor bracket, and the motor bracket is connected to the base through shock-absorbing rubber screws.

3. The focusing structure without lubricating oil as claimed in claim 2, characterized in that: The shock-absorbing rubber screws are connected to both sides of the motor bracket, the bottom of the shock-absorbing rubber screws is installed on the base, the shock-absorbing rubber screws pass through the connecting holes of the motor bracket and are threadedly connected to the fixing nuts, and an anti-loosening gasket is sandwiched between the fixing nuts and the motor bracket.

4. The focusing structure without lubricating oil as claimed in claim 1, characterized in that: A matching notch matching with the through-type lead screw motor is provided at the outer bottom of the lens bracket.

5. The focusing structure without lubricating oil as claimed in claim 4, characterized in that: The through-type lead screw motors are provided with three and are arranged on the base at intervals along the central circumference of the lens.

6. A lamp, characterized in that: The invention comprises a lamp housing, a lamp cover and a focusing structure without lubricating oil as claimed in any one of claims 1 to 5, wherein the focusing structure without lubricating oil is arranged in the lamp housing.

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