阅读说明：本技术 一种防止金属管壳玻璃绝缘子碎裂的防护装置 (Prevent cracked protector of metal tube shell glass insulator ) 是由 尤广为 王星鑫 霍珊珊 韦登 于 2021-09-23 设计创作，主要内容包括：本发明提供一种防止金属管壳玻璃绝缘子碎裂的防护装置,其特征在于：它包括第一基座(1),在第一基座(1)上设有一组与金属管壳的引脚(2)对应分布的第一插孔(1a),在第一基座(1)上在设有一个第二基座(3),在第二基座(3)设有一组与金属管壳的引脚(2)对应分布的第二插孔(3a)。本发明具有结构简单、使用方便,通过双层防护结构,对金属管壳引脚进行可靠防护,解决了金属管壳引脚在受到侧向和轴向外力撞击时造成的引脚根部玻璃绝缘子碎裂问题。(The invention provides a protection device for preventing a metal tube shell glass insulator from being cracked, which is characterized in that: the metal tube shell structure comprises a first base (1), wherein a group of first jacks (1 a) which are distributed corresponding to pins (2) of a metal tube shell are arranged on the first base (1), a second base (3) is arranged on the first base (1), and a group of second jacks (3 a) which are distributed corresponding to the pins (2) of the metal tube shell are arranged on the second base (3). The double-layer protection structure has the advantages that the structure is simple, the use is convenient, the metal tube shell pin is reliably protected through the double-layer protection structure, and the problem of the fracture of the glass insulator at the root of the pin caused by the lateral and axial external force impact on the metal tube shell pin is solved.)

1. The utility model provides a prevent cracked protector of metal tube glass insulator which characterized in that: the metal tube shell structure comprises a first base (1), wherein a group of first jacks (1 a) which are distributed corresponding to pins (2) of a metal tube shell are arranged on the first base (1), a second base (3) is arranged on the first base (1), and a group of second jacks (3 a) which are distributed corresponding to the pins (2) of the metal tube shell are arranged on the second base (3).

2. A protector against shattering of a glass insulator on a metal shell as claimed in claim 1 wherein: the thickness of the first base (1) is smaller than the length of the pin (2), and the sum of the thicknesses of the first base (1) and the second base (3) is larger than the length of the pin (2).

3. A protector against shattering of a glass insulator on a metal shell as claimed in claim 1 wherein: first jack (1 a) and second jack (3 a) all include straight hole section (a) and wedge hole section (b) of intercommunication each other, the aperture of straight hole section (a) is unanimous, the aperture of wedge hole section (b) is for enlargeing gradually, the aperture of straight hole section (a) slightly is greater than the diameter of pin (2), the diameter of the big aperture one end of wedge hole section (b) is greater than the diameter of straight hole section (a).

4. A protector against shattering of a glass insulator on a metal shell as claimed in claim 1 wherein: first groove bodies (1 b) distributed in an annular mode are arranged on the first base (1) between the two adjacent first insertion holes (1 a).

5. A protector against shattering of a glass insulator on a metal shell as claimed in claim 1 wherein: and second groove bodies (3 b) which are distributed annularly are arranged on the second base (3) between the two adjacent second jacks (3 a).

6. A protector against shattering of a glass insulator on a metal shell as claimed in claim 1 wherein: the second base (3) comprises a first width section (13 a), a second width section (13 b) extends out of the first width section (13 a), and the width of the first width section (13 a) is larger than that of the second width section (13 b).

The technical field is as follows:

the invention relates to the field of protection of pins of a metal tube shell, in particular to a protection device for preventing a glass insulator of the metal tube shell from being cracked.

Background art:

the metal tube shell structure comprises a metal tube shell, metal tube shell pins, glass insulators between the pins and the shell and the like, wherein the metal tube shell pins are fixed in holes in the bottom of the metal tube shell in a glass insulator sintering mode.

Because of the metal tube not only can receive side direction external force in the use link, also can receive forward external force simultaneously, especially four edges of metal tube, because of the most outside that is close to on this edge limit, very easily atress. If in the production, processing and screening test process when operating personnel will install the circuit upper table of metal tube shell, pin 2 collides with work piece platform face, can collide with the desktop or put the dish bottom when descending the workstation, pin 2 not only can the atress warp the bending this moment, and 2 roots of pin also can receive pin 2 axial external force and cause glass insulator 4 cracked (as shown in figure 5). The on-site observation shows that the glass insulator cracking phenomenon often occurs at the four corners of the metal tube shell.

The invention content is as follows:

the invention aims to overcome the defects in the prior art and provides a protection device for preventing a metal tube shell glass insulator from being broken.

The application provides the following technical scheme:

the utility model provides a prevent cracked protector of metal tube glass insulator which characterized in that: the metal tube shell structure comprises a first base, wherein a group of first jacks distributed corresponding to pins of the metal tube shell are arranged on the first base, a second base is arranged on the first base, and a group of second jacks distributed corresponding to the pins of the metal tube shell are arranged on the second base.

On the basis of the technical scheme, the following further technical scheme can be provided:

the thickness of the first base is smaller than the length of the pin, and the sum of the thicknesses of the first base and the second base is larger than the length of the pin.

The first jack and the second jack comprise a straight hole section and a wedge-shaped hole section which are communicated with each other, the aperture of the straight hole section is consistent, the aperture of the wedge-shaped hole section is gradually enlarged, the aperture of the straight hole section is slightly larger than the diameter of the pin, and the diameter of one end, with a large aperture, of the wedge-shaped hole section is larger than the diameter of the straight hole section.

First groove bodies distributed in an annular mode are arranged on the first base between the two adjacent first jacks.

And second groove bodies distributed in an annular manner are arranged on the second base between the two adjacent second jacks.

The second base comprises a first width section, a second width section extends out of the first width section, and the width of the first width section is larger than that of the second width section.

The invention has the advantages that:

the double-layer protection structure has the advantages that the structure is simple, the use is convenient, the metal tube shell pin is reliably protected through the double-layer protection structure, and the problem of the fracture of the glass insulator at the root of the pin caused by the lateral and axial external force impact on the metal tube shell pin is solved. In addition, the first and second grooves distributed in the annular shape enable a user to select the number of the proper jacks on the first and second bases according to the number of pins of the metal tube shell to be protected, the first and second grooves are broken off from the corresponding first and second grooves, and the jacks which are not needed are discarded, so that the situation that the protection device is too heavy and the effect of the metal tube shell during moving is influenced is avoided.

Description of the drawings:

FIG. 1 is a schematic view of the present invention in use;

FIG. 2 is a schematic view of the structure in another orientation of the present invention in use;

FIG. 3 is a schematic view of the first base of FIG. 1 in use alone;

FIG. 4 is a schematic view of a first base structure;

fig. 5 is a schematic view showing a glass insulator broken in the prior art.

The specific implementation mode is as follows:

as shown in fig. 1-4, a protective device for preventing a glass insulator of a metal tube from being broken comprises an elongated first base 1, wherein a group of first insertion holes 1a distributed along the length direction of the first base 1 and penetrating through the first base 1 are arranged on the first base 1, and the first insertion holes 1a correspond to pins 2 of the metal tube so that the pins 2 can be inserted into the first insertion holes 1 a.

The first base 1 is further provided with a second base 3, and the second base 3 is provided with a group of second jacks 3a which are distributed corresponding to the pins 2 of the metal tube shell. The first base 1 and the second base 3 are made of plastic integrally.

The first jack 1a and the second jack 3a respectively comprise a straight hole section a with one end communicated with the end surface of the top end of the base and a wedge-shaped hole section b with one end communicated with the end surface of the bottom end of the base, wherein the straight hole section a and the wedge-shaped hole section b are communicated with each other. The aperture of the straight hole section a is consistent, and the aperture of the wedge-shaped hole section b is in a gradually enlarged horn mouth shape.

The aperture of straight hole section a is 1.05 times ~ 1.2 times of pin 2 diameter, wedge hole section b is for leaking hopper-shaped, and the diameter of the small mouth of funnel is the same with straight hole section a's aperture, and the diameter of the big mouth of funnel is 2.5 times ~ 4 times of pin 2 diameter to make things convenient for first jack 1a and second jack 3a to assemble on pin 2.

Since the pin 2 of the metal case made of metal has a certain toughness in actual production, it has a certain deformation. Therefore, the first jack 1a and the second jack 3a can penetrate through the pins 2, and the size error between the pins 2 of the metal tube shell can be utilized to ensure that the jacks and the pins have enough friction force, so that the protection device can not fall off from the pins 2.

The second base 3 comprises a first width section 13a, a second width section 13b extends from the first width section 13a, and the width of the first width section 13a is greater than that of the second width section 13 b. The straight section a of the second receptacle 3a is located at the second width section 13b and the wedge-shaped section b of the second receptacle 3a is located at the first width section 13 a. The first base 1 has the same width as the first width section 13 a.

The thickness of the first base 1 is smaller than the length of the pin 2, and then the thickness paper box after the first base 1 and the second base 3 are stacked together is larger than the length of the pin 2.

Therefore, when only the first base 1 is sleeved on the pin 2 for use, when the pin 2 is deformed due to the action of external force in the horizontal direction, the deformation point of the pin 2 is far away from the root of the pin under the isolation of the first base 1, and all the glass insulators 4 can be protected to a certain extent. However, the shielding force of the first base 1 alone is insufficient when an external force along the axial direction of the lead 2 acts.

Therefore, the first base 1 and the second base 3 are required to be sleeved on the pins 2, and the end parts of the pins 2 cannot extend out of the second base 3, so that the problem that the glass insulator at the root parts of the pins is cracked due to the fact that external force impacts the end surfaces of the pins 2 in operation and axial impact along the pins 2 is avoided.

First groove bodies 1b distributed annularly along the thickness direction are arranged on the first base 1 between the two adjacent first jacks 1 a. And second grooves 3b which are distributed annularly along the thickness direction are arranged on the second base 3 between the two adjacent second insertion holes 3 a. The first groove body 1b and the second groove body 3b are both V-shaped grooves.

The annular distribution and the structure are that the first groove body and the second groove body of the V-shaped groove enable a user to select the number of the proper jacks on the first base and the second base according to the number of pins of the metal tube shell to be protected, the first groove body and the second groove body corresponding to each other are broken and separated, the jacks of the part which is not needed are discarded, and the situation that the protection device is too heavy and the effect of the metal tube shell when moving is influenced is avoided.