CN212276937U

CN212276937U - Ceramic shell resistor

Info

Publication number: CN212276937U
Application number: CN202021237540.9U
Authority: CN
Inventors: 刘金涛; 骆晶晶
Original assignee: Shanghai Krah Electronics Co ltd
Current assignee: Shanghai Krah Electronics Co ltd
Priority date: 2020-06-30
Filing date: 2020-06-30
Publication date: 2021-01-01
Anticipated expiration: 2030-06-30

Abstract

The utility model relates to a ceramic housing resistor, including ceramic housing, wire-wound resistive element and stopping, the wire-wound resistive element includes lasso, ceramic axle, resistance wire and draws forth and participate in, ceramic housing be upper end open-ended box body structure, ceramic axle install in box body structure, ceramic axle both ends are supported and are leaned on ceramic housing both ends lateral wall, the resistance wire winding in the outer lane of ceramic axle, the lasso nestification both ends outer lane and the connecting resistance wire of ceramic axle, draw forth and participate in the connecting lasso to draw forth and participate in the vertical opening that upwards stretches out ceramic housing. Compared with the prior art, the utility model adopts a brand-new pin leading-out structure, is easy to adjust and position in the installation process, and prevents loosening and skewing; and effectively improves the space utilization rate in the ceramic shell and obviously improves the current carrying capacity of the resistor.

Description

Ceramic shell resistor

Technical Field

The utility model relates to a resistor especially relates to a ceramic housing resistor.

Background

The existing ceramic resistor usually adopts a mode that the capped pins are matched with the ceramic shaft in a pressing mode. The cap is usually a stamping part, the requirement on the dimensional tolerance precision is high, the diameter tolerance precision of the ceramic shaft is low, the sizes of the cap and the ceramic shaft are not easy to adjust after the cap and the ceramic shaft are assembled, the cap is easy to loosen or the ceramic shaft is easy to crush, and the production quality of a product is influenced; meanwhile, the size of the ceramic shell is limited, the maximum diameter of the ceramic shaft matched with the cap type pin is limited greatly, so that the size of the core body of the product is generally small, the heavy current load capacity is poor, and the application range of the product is limited.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provide a ceramic shell resistor, which has better stability of the whole structure and is not easy to fall off or crack; meanwhile, the space utilization rate in the ceramic shell is improved, the effective volume of the ceramic shaft is larger, and the large-current load capacity of the resistor is improved.

The purpose of the utility model can be realized through the following technical scheme:

the utility model provides a ceramic housing resistor, includes ceramic housing and wire-wound resistive element, the wire-wound resistive element includes lasso, ceramic axle, resistance wire and draws forth participate in, ceramic housing be upper end open-ended box body structure, the ceramic axle install in the box body, ceramic axle both ends are supported and are leaned on ceramic housing both ends lateral wall, the resistance wire winding in the outer lane of ceramic axle, the lasso nestification both ends outer lane at ceramic axle and connect the resistance wire, draw forth participate in and be connected with the lasso through the connecting block to draw forth participate in the vertical opening that upwards stretches out ceramic housing of participating in.

Furthermore, a first connecting block is arranged on the ferrule, a second connecting block is arranged on the leading-out pin, and the ferrule and the leading-out pin are connected through welding through the first connecting block and the second connecting block.

Furthermore, the first connecting block comprises a vertical plate, a side plate and a horizontal plate, the bottom edge of the vertical plate is connected with the ferrule, one side edge of the vertical plate is vertically connected with the side plate, and the top edge of the side plate is vertically connected with the horizontal plate; the second connecting block comprises a fixing plate and a limiting plate, and the fixing plate is vertically connected with the limiting plate; when the first connecting block is connected with the second connecting block, the fixed plate and the side plate are mutually connected and fixed through the surfaces, meanwhile, the top edge of the fixed plate is attached to the bottom surface of the horizontal plate, and one side edge of the side plate is attached to the side surface of the limiting plate to fix the position.

Furthermore, the leading-out pin is provided with a through hole for positioning the butt-joint terminal.

Further, still include the fixed bolster, this fixed bolster includes interconnect's fixation clamp and bottom plate, the ceramic casing sets up on the bottom plate, and the fixation clamp is from both sides fixed ceramic casing.

Furthermore, the fixing clamp comprises a plurality of pairs of clamping plates, each pair of clamping plates is positioned on two sides of the ceramic shell, and the top ends of the clamping plates are horizontally bent towards the ceramic shell.

Furthermore, the ceramic shell at least comprises two pairs of clamping plates.

Further, the bottom plate is composed of two wing plates with mounting holes.

Furthermore, the winding resistor further comprises high-temperature-resistant filler for filling a gap between the inside of the ceramic shell and the winding resistor.

Furthermore, the high-temperature resistant filler is a white cement filler.

Compared with the prior art, the utility model has the advantages of it is following:

1. the utility model discloses a lasso has replaced traditional block structure, and in the installation, the diameter of lasso is easily adjusted, makes it can form closely to cooperate with the ceramic axle that the manufacturing accuracy is low, prevents that the pine from taking off and the installation is not in place, and the installation is simpler and easier.

2. The utility model discloses a ferrule and vertical ascending design of participating in of drawing forth have improved space utilization in the ceramic housing more effectively, under same ceramic housing size, the utility model discloses a structure can make the diameter of ceramic axle increase about 30% to the wire winding distance of resistance wire is longer, is showing the power that has improved the resistor.

3. The utility model discloses in, draw forth and participate in vertical design that makes its installation suitability more extensive.

4. The ferrule and the leading-out pin are mutually embedded and connected through the first connecting block and the second connecting block, so that the positioning is accurate and convenient during fixing, and the production work efficiency is improved.

5. The ceramic shell is externally provided with a fixed bracket, so that the ceramic shell is convenient to use and install.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural diagram of a wire resistor.

Reference numerals: 1. the ceramic winding resistor comprises a ceramic shell, 2, a winding resistor body, 21, a ferrule, 211, a first connecting block, 211a, a vertical plate, 211b, a side plate, 211c, a horizontal plate, 22, a ceramic shaft, 23, a resistance wire, 24, a leading-out pin, 241, a second connecting block, 241a, a fixing plate, 241b, a limiting plate, 242, a through hole, 3, a fixing support, 31, a fixing clamp, 32 and a bottom plate.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. The embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.

As shown in fig. 1 and 2, the present embodiment provides a ceramic case resistor including a ceramic case 1 and a wire-wound resistor body 2. The wire-wound resistor body 2 includes a ferrule 21, a ceramic shaft 22, a resistance wire 23, and a lead pin 24. The ceramic shell 1 is a box body with an opening at the upper end, the ceramic shaft 22 is installed in the box body, and the two ends of the ceramic shaft 22 are abutted against the inner walls of the box body at the front end and the rear end. The resistance wire 23 is wound on the outer ring of the ceramic shaft 22, the ferrules 21 are nested on the outer rings of the two ends of the ceramic shaft 22 and connected with the resistance wire 23, and the preferred connection mode is spot welding connection. The lead-out pins 24 are fixed to the ferrule 21, and the lead-out pins 24 vertically protrude upward out of the opening of the ceramic case 1. Through holes 242 for wiring are provided at the tips of the lead pins 24. The ceramic shell 1 is filled with a high temperature resistant filler, the high temperature resistant filler can be a mixed filler of silicate and silicone resin or a temperature resistant resin material, and in this embodiment, a white cement filler is used to seal and fix the winding resistor 2.

The ferrule 21 is provided with a first connecting block 211, the lead-out pin 24 is provided with a second connecting block 241, and the ferrule 21 and the lead-out pin 24 are connected by fitting the first connecting block 211 and the second connecting block 241 into each other. Specifically, the method comprises the following steps: the first connection block 211 includes a vertical plate 211a, a side plate 211b, and a horizontal plate 211 c. The bottom edge of the vertical plate 211a is connected to the collar 21. In the present embodiment, the vertical plate 211a is formed by folding both ends of the ferrule 21. One side edge of the vertical plate 211a is vertically connected to a side edge of the side plate 211b, while the top edge of the side plate 211b is vertically connected to the horizontal plate 211 c. The second connecting block 241 includes a fixing plate 241a and a stopper plate 241b, and the fixing plate 241a and the body of the lead-out pin 24 are integrally formed at a lower side end. A stopper plate 241b is vertically connected to the top edge of the fixing plate 241 a. When the first connection block 211 and the second connection block 241 are connected, the top edge of the fixing plate 241a abuts against the bottom surface of the horizontal plate 211c, and one side edge of the side plate 211b abuts against the side surface of the limiting plate 241b, so that the fixing plate 241a and the side plate 211b can be quickly positioned with each other, thereby performing surface welding fixation.

The ceramic shell 1 is also provided with a fixed support 3 outside, which is convenient for use and installation. The fixing bracket 3 includes a fixing clip 31 and a base plate 32 connected to each other. The ceramic case 1 is disposed on the bottom plate 32, and the fixing clips 31 fix the ceramic case 1 from both sides. The fixing clip 31 includes a plurality of pairs of clamping plates, each pair of clamping plates is located on both sides of the ceramic case 1, and the top ends of the clamping plates are horizontally bent toward the ceramic case 1. Two pairs of cleats are preferably used in this embodiment. The bottom plate 32 is composed of two wing plates with mounting holes, and extends out from two sides of the bottom of the ceramic shell 1 respectively to realize adaptation and mounting with external equipment.

The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the teachings of the present invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.

Claims

1. The utility model provides a ceramic housing resistor, includes ceramic housing (1) and wire winding resistive element (2), its characterized in that, wire winding resistive element (2) include ferrule (21), ceramic axle (22), resistance wire (23) and extraction pin (24), ceramic housing (1) be upper end open-ended box structure, ceramic axle (22) install in box structure, ceramic axle (22) both ends are supported and are leaned on ceramic housing (1) both ends lateral wall, resistance wire (23) winding in the outer lane of ceramic axle (22), ferrule (21) nestification in the both ends outer lane of ceramic axle (22) and connect resistance wire (23), extraction pin (24) connect ferrule (21) to extraction pin (24) vertically upwards stretch out the opening of ceramic housing (1).

2. A ceramic case resistor according to claim 1, wherein the ferrule (21) is provided with a first connecting block (211), and the lead-out pins (24) are provided with a second connecting block (241), and the ferrule (21) and the lead-out pins (24) are connected by fitting the first connecting block (211) and the second connecting block (241) into each other.

3. The ceramic shell resistor as claimed in claim 2, wherein the first connecting block (211) comprises a vertical plate (211a), a side plate (211b) and a horizontal plate (211c), the bottom edge of the vertical plate (211a) is connected with the ferrule (21), one side edge of the vertical plate is connected with the side plate (211b) vertically, and the top edge of the side plate (211b) is connected with the horizontal plate (211c) vertically; the second connecting block (241) comprises a fixing plate (241a) and a limiting plate (241b), and the fixing plate (241a) is vertically connected with the limiting plate (241 b); when the first connecting block (211) is connected with the second connecting block (241), the fixing plate (241a) and the side plate (211b) are mutually fixed through surface connection, meanwhile, the top edge of the fixing plate (241a) is attached to the bottom surface of the horizontal plate (211c), one side edge of the side plate (211b) is attached to the side surface of the limiting plate (241b), and position fixing is carried out.

4. A ceramic case resistor according to claim 1 wherein the lead pins (24) are provided with through holes (242) for locating the butt terminals.

5. A ceramic shell resistor as claimed in claim 1, further comprising a fixing bracket (3), the fixing bracket (3) comprising a fixing clip (31) and a base plate (32) connected to each other, the ceramic shell (1) being arranged on the base plate (32), the fixing clip (31) fixing the ceramic shell (1) from both sides.

6. A ceramic shell resistor as claimed in claim 5, characterized in that said holding clips (31) comprise pairs of clamping plates, each pair of clamping plates being located on either side of the ceramic shell (1), the top ends of the clamping plates being bent horizontally in the direction of the ceramic shell (1).

7. A ceramic shell resistor as claimed in claim 6, characterized in that said ceramic shell (1) comprises at least two pairs of clamping plates.

8. A ceramic shell resistor as claimed in claim 5, wherein said base plate (32) is formed by two flanges with mounting holes.

9. The ceramic case resistor as claimed in claim 1, further comprising a refractory filler for filling a gap between the inside of the ceramic case (1) and the wire-wound resistor body (2).

10. A ceramic case resistor according to claim 9 wherein said refractory filler is a white cement filler.