Heating wire fixing block locking structure
By designing the locking structure of the heating wire fixing block in the vacuum coating equipment, the coordination of the elastic pin and the operating lever is used to solve the loosening problem of the heating wire due to thermal expansion and contraction, the stable fixation of the heating wire is achieved, and the equipment is improved Operational reliability.
Patent Information
- Application Number
- CN202422850934.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-22
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-11-22
AI Technical Summary
In vacuum coating equipment, the heating wire loosens or falls off with the fixed block due to thermal expansion and contraction, which affects the long-term operation stability of the equipment.
A heating wire fixing block locking structure is designed, including an electrode rod, a fixing support, a locking block, an elastic pin, a locking block and an operating lever. The mutual cooperation between the locking block and the elastic pin is controlled by the movement of the operating lever. Make sure that the heating wire fixing block does not loosen during thermal expansion and contraction.
It effectively avoids loosening and falling off of the heating wire fixing block caused by thermal expansion and contraction, ensures stable fixation of the heating wire and improves the operating reliability of the equipment.
Smart Images
Figure CN222215982U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a heating wire fixing structure and belongs to the technical field of electric heating device structures. Background Art
[0002] The heating wire in the vacuum coating equipment is used to heat the cavity. The heating wire is fixed on the heating wire fixing block to connect with the electrode rod. In some equipment, the heating wire and the fixing block are connected by a simple spring pin. However, due to the temperature change in the equipment, the parts will expand and contract. After working for a long time, the spring pin may move abnormally, causing the heating wire fixing block to loosen or even fall off the electrode rod. Utility Model Content
[0003] In view of the above-mentioned defects of the prior art, the utility model provides a locking structure of a heating wire fixing block, which aims to solve the problem that the heating wire fixing block becomes loose and falls off from the electrode rod due to thermal expansion and contraction.
[0004] The technical solution of the utility model is as follows: a heating wire fixing block locking structure, comprising an electrode rod and a heating wire fixing block, the electrode rod is fixedly connected with a fixing support and a locking block, the heating wire fixing block is placed on the fixing support, the locking block is provided with an elastic pin, a locking block and an operating lever, the elastic pin is slidably matched with the locking block in a first direction, the locking block is slidably matched with the locking block in a second direction, the operating lever is slidably matched with the locking block in a third direction, the locking block is matched with the elastic pin through a first inclined surface and when the locking block moves in the second direction, the elastic pin is moved in the first direction, the locking block has a second inclined surface and a locking surface that cooperates with the operating lever, the operating lever moves in the third direction and pushes the locking block to move in the second direction when it cooperates with the second inclined surface, the position of the locking block in the second direction remains unchanged when the operating lever moves in the third direction and cooperates with the locking surface, the second direction is different from the first direction, and the second direction is different from the third direction.
[0005] Furthermore, the locking surface is a plane which is in the same direction as the third direction.
[0006] Furthermore, the first direction and the third direction are the same direction.
[0007] Furthermore, the first direction and the third direction are longitudinal, and the second direction is transverse.
[0008] Furthermore, the included angle between the first inclined surface and the first direction is 40° to 50°, and the included angle between the second inclined surface and the third direction is 40° to 50°.
[0009] Furthermore, the locking block is provided with a step hole in a first direction and a slideway in a second direction, the elastic pin is arranged in the step hole, the bottom end of the elastic pin is used to lock the heating wire fixing block, the spring of the elastic pin is arranged between the elastic pin and the bottom of the step hole, the locking block is arranged in the slideway and the front end of the locking block cooperates with the top of the elastic pin through a first inclined surface.
[0010] Furthermore, the locking block is provided with a guide hole in a third direction, the operating lever comprises a lever body and a guide rod, the lever body is arranged in the slideway, the guide rod is located in the guide hole and is fixedly connected to the lever body.
[0011] Compared with the prior art, the advantages of the technical solution provided by the utility model are:
[0012] The utility model controls the locking block to move in the second direction by moving the operating lever in the third direction, thereby causing the elastic pin to move in the first direction to lock the heating wire fixing block, and when the operating lever moves in the third direction, there is a distance that keeps the position of the locking block in the second direction unchanged. In this way, even if the operating lever moves in the third direction to a certain extent due to thermal expansion and contraction, it can avoid causing the elastic pin to move and cause the heating wire fixing block to loosen and fall off. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a schematic diagram of the three-dimensional cross-section structure of the locking structure of the heating wire fixing block.
[0014] Figure 2 It is a schematic longitudinal cross-sectional view of the locking structure of the heating wire fixing block.
[0015] Figure 3 It is a schematic diagram of the structure of the locking block.
[0016] Figure 4 It is a schematic diagram of the cross-sectional structure of the locking block. DETAILED DESCRIPTION
[0017] The present invention is further described below in conjunction with embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. After reading this description, various equivalent modifications to the description by those skilled in the art fall within the scope defined by the claims attached to this application.
[0018] Please combine Figures 1 to 4As shown, the heating wire fixing block locking structure of this embodiment includes an electrode rod 1 and a heating wire fixing block 2. A fixing support 3 and a locking block 4 are fixedly mounted on the lower end of the electrode rod 1. Both the fixing support 3 and the locking block 4 can be fixed to the electrode rod 1 by screws. The fixing support is L-shaped, and a space for accommodating the heating wire fixing block 2 is formed between the bent portion thereof and the lower end surface of the electrode rod 1 and the locking block 4. The heating wire fixing block 2 is placed on the fixing support 3.
[0019] The locking block 4 is provided with an elastic pin 5, a locking block 6 and an operating lever 7. The locking block 4 is provided with a step hole 401 in a first direction for placing the elastic pin 5. The spring 5a of the elastic pin 5 is arranged between the elastic pin 5 and the bottom of the step hole 401. When an external force is applied to the top of the elastic pin 5, the elastic pin 5 moves downward and passes through the through hole at the bottom of the step hole 401 to fix the heating wire fixing block 2. Therefore, it can be understood that the heating wire fixing block 2 has the best fixing effect when a hole or a pit matching the elastic pin 5 is arranged on the heating wire fixing block 2. In this embodiment, the aforementioned first direction is the longitudinal direction. Of course, the first direction can be determined according to the actual pinning fixing direction of the heating wire fixing block 2.
[0020] A slideway 402 in the second direction is provided on the locking block 4. The second direction and the first direction are two different directions. In this embodiment, the second direction is horizontal. A locking block 6 that can slide horizontally is provided in the slideway 402. The front end surface of the locking block 6 is a first inclined surface 601. When the elastic pin 5 contacts the first inclined surface 601, the elastic pin 5 is pressed down when the locking block 6 continuously moves forward horizontally. In this embodiment, in order to ensure smooth relative movement between the elastic pin 5 and the locking block 6, the top surface of the elastic pin 5 is also made into an inclined surface. The angle between the first inclined surface 601 and the first direction is 40° to 50°, and is 45° in this embodiment.
[0021] The rear end face of the locking block 6 includes a second inclined surface 602 located at the upper part and a locking surface 603 located at the lower part, and the locking surface 603 is a plane in the same direction as the third direction. In this embodiment, the third direction and the first direction are both longitudinal, the second inclined surface 602 is parallel to the first inclined surface 601, and the angle between the second inclined surface 602 and the third direction is 45°. A guide hole 403 in the third direction is provided on the locking block 4, and the guide hole 403 is connected to the slide 402. The operating lever 7 includes a lever body 7a and a guide rod 7b, the lever body 7a is arranged in the slide 402, and the guide rod 7b is located in the guide hole 403 and fixedly connected to the lever body 7a. The lever body 7a can move up and down in the slide 402 through the guidance of the guide rod 7b. The front end of the lever body 7a cooperates with the rear end face of the locking block 6. Since the second inclined surface 602 is inclined and the locking surface 603 is longitudinally arranged, when the lever body 7a is at the upper part of the slide 402 and the front end of the lever body 7a is located at the second inclined surface 602, the downward movement of the lever body 7a will push the locking block 6 forward. When the lever body 7a is at the lower part of the slide 402 and the front end of the lever body 7a is located at the locking surface 603, the upward and downward movement of the lever body 7a does not affect the locking block 6, and the locking block 6 remains in the same position in the slide 402.
[0022] According to the above embodiment, when the lever body 7a is pressed down, the locking block 6 is first pushed forward in the slideway 402 by the lever body 7a, and the locking block 6 presses down the spring pin 5 through the first inclined surface 601, and the longitudinal movement of the lever body 7a is converted into the longitudinal movement of the spring pin 5 through two conversions, so as to fix the heating wire fixing block 2. When the lever body 7a moves down to its front end to cooperate with the locking surface 603, the locking block 6 no longer changes its position, and the spring pin 5 remains in the extended state, and the locking block 6 is also blocked from moving backward by the lever body 7a, so that the whole structure is in a locked state. When the heating wire fixing block 2 needs to be disassembled, the lever body 7a is lifted up until its front end is at the position of the second inclined surface 602, and the spring pin 5 moves up under the action of the spring 5a and pushes the locking block 6 backward through the first inclined surface 601, so that the spring pin 5 can move up.
Claims
1. A heating wire fixing block locking structure, comprising an electrode rod and a heating wire fixing block, characterized in that: The electrode rod is fixedly connected to a fixed support and a locking block, and the heating wire fixing block is placed on the fixed support, and the locking block is provided with an elastic pin, a locking block and an operating lever, wherein the elastic pin is slidably matched with the locking block in a first direction, and the locking block is slidably matched with the locking block in a second direction, and the operating lever is slidably matched with the locking block in a third direction, and the locking block is matched with the elastic pin through a first inclined surface, and when the locking block moves in the second direction, the elastic pin is moved in the first direction, and the locking block has a second inclined surface and a locking surface that cooperates with the operating lever, and the operating lever moves in the third direction and pushes the locking block to move in the second direction when it cooperates with the second inclined surface, and when the operating lever moves in the third direction and cooperates with the locking surface, the position of the locking block in the second direction remains unchanged, and the second direction is different from the first direction, and the second direction is different from the third direction.
2. The heating wire fixing block locking structure according to claim 1, characterized in that: The locking surface is a plane in the same direction as the third direction.
3. The heating wire fixing block locking structure according to claim 1, characterized in that: The first direction and the third direction are the same direction.
4. The heating wire fixing block locking structure according to claim 1, characterized in that: The first direction and the third direction are longitudinal, and the second direction is transverse.
5. The heating wire fixing block locking structure according to claim 4, characterized in that: The included angle between the first inclined surface and the first direction is 40° to 50°, and the included angle between the second inclined surface and the third direction is 40° to 50°.
6. The heating wire fixing block locking structure according to claim 1, characterized in that: The locking block is provided with a step hole in a first direction and a slideway in a second direction, the elastic pin is arranged in the step hole, the bottom end of the elastic pin is used to lock the heating wire fixing block, the spring of the elastic pin is arranged between the elastic pin and the bottom of the step hole, the locking block is arranged in the slideway and the front end of the locking block cooperates with the top of the elastic pin through a first inclined surface.
7. The heating wire fixing block locking structure according to claim 6, characterized in that: The locking block is provided with a guide hole in a third direction, the operating lever comprises a lever body and a guide rod, the lever body is arranged in the slideway, the guide rod is located in the guide hole and is fixedly connected to the lever body.