CN110043868A - A kind of supporting structure for saving the detachable and interchangeable light bulb in space - Google Patents

Abstract

The invention discloses a space-saving and detachable bracket structure for replacing a bulb. The bracket structure includes a car lamp shell, a fixing component, a mounting bracket, a lamp socket and a light bulb. The inner wall of the dismantling hole is fixedly installed with a mounting bracket through a fixing component. The invention is scientific and reasonable, safe and convenient to use, and is provided with a mounting bracket. Using the mounting bracket, in the case where the interior space of the vehicle lamp is limited, the bracket structure can be used to make the vehicle lamp and the vehicle light. While the reflectors can cooperate with each other, it is convenient to disassemble and replace the light bulb, and the disassembly of the mounting bracket is used to facilitate the disassembly of the light bulb without being restricted by the space inside the lamp. Take it out from the inside of the car light, and use the stress relief groove to release the stress inside the mounting bracket when the vibration occurs during the car journey, so as to improve the stability and service life of the mounting bracket.

Description

A space-saving bracket structure for detachable and replaceable bulbs

technical field

The invention relates to the technical field of automobile lamps, in particular to a space-saving and detachable bracket structure for replacing light bulbs.

Background technique

In the automotive lighting industry, the combination of bulbs and reflectors is a traditional form of automotive lighting. Because of its low price and simple and stable components, it is still widely used in lamps and signal lights. Whether the bulbs and reflectors can be used depends on the : 1. Whether it can meet the optical requirements; 2. Whether there is enough space behind the lamp to facilitate the disassembly and replacement of the bulb. At present, there are two ways to replace the bulb in the industry: the first is to open the shell directly behind the bulb. The hole cooperates with the sealing cover. When replacing the light bulb, first open the rear cover, and then directly replace the light bulb through the opening by hand. The second is that the light bulb holder is screwed on the housing, which can be directly disassembled and replaced from the rear. The above Both methods have their limitations. The first is limited by whether there is space on the housing directly behind the bulb to arrange the cover. It is very close to the situation that it cannot be arranged in the front. Therefore, people are in urgent need of a space-saving and detachable bracket structure for replacing the bulb to solve the above problem.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a space-saving and detachable bracket structure for replacing the bulb, so as to solve the problems raised in the prior art.

In order to achieve the above object, the present invention provides the following technical solutions: a space-saving and detachable bracket structure for replacing a bulb, the bracket structure comprising a lamp housing, a fixing assembly, a mounting bracket, a lamp socket and a bulb;

A dismounting opening is provided at the bottom end of the housing of the vehicle lamp, an inner wall of the dismounting opening is fixedly installed with a mounting bracket through a fixing assembly, one end of the mounting bracket is mounted with a lamp socket, and a light bulb is mounted above the lamp socket;

Using the mounting bracket, when the interior space of the lamp is limited, the use of the bracket structure can make the lamp and the reflector cooperate with each other, and at the same time facilitate the disassembly and replacement of the light bulb, and the disassembly of the mounting bracket is convenient for the light bulb. Dismantling will not be limited by the space inside the lamp. At the same time, the dismantling hand-held slot is used to facilitate the removal of the mounting bracket from the inside of the lamp, and the stress relief slot can be used to relieve the stress inside the mounting bracket when vibration occurs during the car journey. Release, improve the stability and service life of the mounting bracket.

Preferably, the fixing assembly includes a fixing seat, a fixing cylindrical groove, a limit slot, a fixing support bottom rod, a tightening screw, a tightening knob, a fixed installation column, a tightening thread groove, a limit block and a connection block;

The lamp housing and the fixing seat are integrally formed, the fixing seat is vertically provided with a fixed cylindrical groove, the inner wall of the fixed cylindrical groove is provided with two limit slots, and the bottom of the fixed cylindrical groove is installed There is a fixed support bottom rod, the fixed seat and the fixed support bottom rod are integrally formed, the middle part of the fixed support bottom rod is interspersed with a tightening screw from bottom to top through threads, and one end of the tightening screw is connected by thermal fusion. A fastening knob is fixedly installed, a fixed installation post is installed inside the fixed cylindrical groove, a fastening thread groove is formed through the middle of the fixed installation post, and two fixed installation posts are provided at the position corresponding to the limit slot on the outer wall of the fixed installation post. Limit block, the two limit blocks and the fixed installation column are integrally formed, and a connection block is installed on the outer side of the fixed installation column and the vertical position of the two limit blocks, and the connection block is connected to the two limit blocks. The fixed installation columns are connected by thermal fusion;

Using the fixed seat, the fixed cylindrical slot and the fixed installation post, the quick installation and removal of the installation bracket can be realized. By using the limit slot and the limit clip, the installation position of the fixed installation post can be determined, so that the fixed installation post can be easily installed and removed. The installation is more accurate, which effectively avoids errors in the installation of the bulb. Using the tightening screw, tightening knob and tightening thread groove, the fixed installation column can be installed more firmly, and it will not easily slip off, so as to avoid the installation of the fixed installation column. The vibration during driving affects the position of the mounting bracket, which improves the stability of the bulb installation.

Preferably, the mounting bracket includes a lower support arm and an upper support arm, and the upper support arm and the lower support arm are in a sliding telescopic connection.

Preferably, the lower support arm comprises a disassembly hand slot, a stress relief slot, a telescopic slot and an adjustment card slot;

The lower support arm has a "7"-shaped structure, the bottom end of the lower support arm is provided with a dismantling hand-held slot, the upper part of the dismantling hand-held slot is equidistantly provided with a stress relief slot, and one end of the lower arm is provided with a telescopic socket. The two sides of the telescopic slot are provided with adjustment slots at equal distances.

Preferably, the upper support arm includes a telescopic insert, an adjustment block, a mounting seat and a buckle;

The upper support arm is an "L"-shaped structure, one end of the upper support arm is installed with a telescopic insert, the telescopic insert and the upper support arm are integrally formed, and one end on both sides of the telescopic insert is equally spaced. Two adjustment blocks are installed, a mounting seat is installed at one end of the upper support arm, the mounting seat and the upper support arm are integrally formed, and four buckles are installed on the edge of the upper surface of the mounting seat at equal distances. , the four buckles and the mounting seat are all integrally formed;

Insert the telescopic insert into the telescopic slot, and use the adjustment slot and the adjustment block to fix the position where the telescopic insert is inserted, so that the position of the upper arm can be adjusted, so that the mounting bracket can be applied to cars of different sizes. lamp, which improves the application range of the mounting bracket.

Preferably, the distance between the two adjustment card slots is equal to the distance between the two adjustment card blocks, so that the adjustment card blocks can be engaged in the adjustment card grooves, and the stability of the mounting bracket after telescopic adjustment is improved.

Preferably, the lamp socket and the mounting socket are fixedly connected by a buckle, and when the lamp socket is damaged, the fixed installation and removal of the lamp socket is convenient.

Preferably, the diameter of the fixed cylindrical groove is equal to the diameter of the fixed installation column, and the fixed cylindrical groove and the fixed installation column are fixedly connected by a tightening screw and a tightening thread groove, so that the fixed installation of the mounting bracket is more stable. At the same time, it makes its installation position more precise.

Compared with the prior art, the beneficial effects of the present invention are:

1. A mounting bracket is provided. Using the mounting bracket, when the interior space of the lamp is limited, the bracket structure can make the lamp and the reflector cooperate with each other, and at the same time, it is convenient to disassemble and replace the light bulb. It is easy to disassemble the light bulb without being restricted by the space inside the lamp. At the same time, the dismantling hand-held slot is used to facilitate the removal of the mounting bracket from the inside of the lamp, and the stress relief slot can be used to prevent vibration during the car journey. The internal stress of the mounting bracket is released to improve the stability and service life of the mounting bracket.

2. A fixed component is provided. Using the fixed seat, the fixed cylindrical groove and the fixed installation column, the quick installation and removal of the installation bracket can be realized. Using the limit slot and the limit block, the installation position of the fixed installation column can be realized. Confirm, make the installation of the fixed installation column more accurate, and effectively avoid errors in the installation of the light bulb. Using the tightening screw, tightening knob and tightening thread groove, the fixed installation column can be installed more firmly, and it will not be easy to install. It can avoid the impact of vibration on the position of the mounting bracket during the driving of the vehicle, and improve the stability of the bulb installation.

3. There are telescopic slots, adjusting card slots, telescopic inserts and adjusting card blocks. Insert the telescopic inserts into the telescopic slots, and use the adjusting card slots and adjusting card blocks to fix the position where the telescopic inserts are inserted. The adjustment of the position of the upper support arm enables the mounting bracket to be suitable for automobile lights of different space sizes, thereby improving the applicable range of the mounting bracket.

Description of drawings

FIG. 1 is a schematic structural diagram of a space-saving and detachable bracket structure for replacing a light bulb according to the present invention;

FIG. 2 is a schematic structural diagram of a space-saving and detachable bracket structure mounting bracket for light bulb replacement according to the present invention;

3 is a schematic structural diagram of a space-saving and detachable bracket structure fixing assembly for replacing a light bulb according to the present invention;

4 is a cross-sectional view of a space-saving and detachable bracket structure fixing seat of the present invention;

5 is a schematic structural diagram of a lower support arm of a space-saving detachable and replaceable light bulb support structure according to the present invention;

6 is a schematic structural diagram of an upper arm of a space-saving detachable and replaceable bracket structure of the present invention;

7 is a schematic structural diagram of a space-saving and detachable bracket structure telescopic insert and telescopic slot of the present invention;

FIG. 8 is a schematic diagram of the installation structure of a telescopic insert of a bracket structure of a space-saving detachable and replaceable light bulb according to the present invention.

Labels in the figure: 1. Lamp housing; 101. Disassembly opening;

2. Fixed component; 201, Fixed seat; 202, Fixed cylindrical slot; 203, Limit slot; 204, Fixed support bottom rod; 205, Fastening screw; 206, Fastening knob; 207, Fixed installation column; 208, Fastening thread groove; 209, limit block; 210, connecting block;

3. Mounting bracket; 301, lower arm; 3011, dismantling hand-held slot; 3012, stress relief slot; 3013, telescopic slot; 3014, adjustment slot; 302, upper arm; 3021, telescopic insert; 3022, adjustment Block; 3023, Mounting Seat; 3024, Buckle;

4. Lamp holder; 5. Light bulb.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Example: As shown in Figures 1-8, the present invention provides a technical solution, a space-saving and detachable bracket structure for bulb replacement, the bracket structure includes a lamp housing 1, a fixing assembly 2, a mounting bracket 3, a lamp socket 4 and bulb 5;

The bottom end of the lamp housing 1 is provided with a disassembly opening 101, which is used to disassemble the mounting bracket 3. Since the bulb 5 does not need to be disassembled directly, the opening position of the disassembly opening 101 is wider, and the interior of the lamp is reduced. The space affects the disassembly of the bulb 5. The inner wall of the disassembly opening 101 is fixedly installed with the mounting bracket 3 through the fixing component 2. The fixing component 2 is used for the fixed installation of the mounting bracket 3, so that the mounting bracket 3 is installed stably and is convenient for installation. When the bracket 3 is disassembled, one end of the mounting bracket 3 is installed with a lamp holder 4 for fixed installation of the light bulb 5 , and a light bulb 5 is installed above the lamp holder 4 to cooperate with the reflector to realize the lighting function.

The fixing assembly 2 includes a fixing seat 201, a fixing cylindrical groove 202, a limit slot 203, a fixed support bottom rod 204, a tightening screw 205, a tightening knob 206, a fixed installation column 207, a tightening thread groove 208, and a limit block 209 and connection block 210;

The lamp housing 1 and the fixing base 201 are integrally formed. The fixing base 201 is vertically provided with a fixed cylindrical groove 202 for fixing the mounting bracket 3. The inner wall of the fixed cylindrical groove 202 is provided with two limit cards. The groove 203 is used to determine the installation position of the fixed installation column 207, so that the fixed installation of the fixed installation column 207 is more stable and firm. The fixed support bottom rod 204 is installed at the bottom of the fixed cylindrical groove 202 for placing the fixed installation column 207. If the sliding phenomenon occurs, the bottom of the fixed installation column 207 is supported. The fixed seat 201 and the fixed support bottom rod 204 are integrally formed. The middle of the fixed support bottom rod 204 is interspersed with a tightening screw 205 from bottom to top through threads. The fixed installation of the fixed installation column 207 is fixed to prevent the fixed installation column 207 from slipping due to the vibration of the car during driving. One end of the fastening screw 205 is fixedly installed with a fastening knob 206 through thermal fusion connection, which is convenient for the fastening screw 205. The operation is convenient for the fixed installation and removal of the installation bracket 3. A fixed installation column 207 is installed inside the fixed cylindrical groove 202 to realize the fixed installation of the installation bracket 3. The middle of the fixed installation column 207 is provided with a fastening thread groove 208. , used to cooperate with the tightening screw 205 to realize the fixed installation of the fixed installation column 207, in order to make the fixed installation of the installation bracket 3 more firm and stable, to avoid shaking during use, resulting in a change in the light-emitting position of the light bulb 5 , the diameter of the fixed cylindrical groove 202 is equal to the diameter of the fixed installation column 207, the fixed cylindrical groove 202 and the fixed installation column 207 are fixedly connected by the tightening screw 205 and the tightening thread groove 208, and the outer wall of the fixed installation column 207 corresponds to the limit card slot Two limit blocks 209 are arranged at the position 203, which are used to cooperate with the limit card slots 203 to realize the determination of the installation position of the fixed installation post 207, so as to avoid the sliding of the fixed installation post 207 during use. The clamping block 209 and the fixed installation column 207 are integrally formed. A connecting block 210 is installed at the outer side of the fixed installation column 207 and the vertical position of the two limit clamping blocks 209. The connection block 210 is used to connect the fixed installation column 207 and the installation bracket. 3. The connection block 210 and the fixed mounting post 207 are connected by thermal fusion.

The installation bracket 3 includes a lower support arm 301 and an upper support arm 302, the upper support arm 301 and the lower support arm 302 are connected by sliding telescopic connection, and the sliding connection between the lower support arm 301 and the upper support arm 302 enables the installation bracket The length of 3 can be adjusted, so that the mounting bracket 3 can be suitable for vehicle lights of different space sizes, and the application range of the mounting bracket 3 is improved.

The lower support arm 301 includes a disassembly hand-held slot 3011, a stress relief slot 3012, a telescopic slot 3013 and an adjustment card slot 3014;

The lower support arm 301 has a "7"-shaped structure, and the bottom end of the lower support arm 301 is provided with a dismantling hand-held slot 3011. The dismantling of the hand-held slot 3011 makes it more convenient to disassemble the mounting bracket 3. The dismantling hand-held slot 3011 is opened at equal distances above. There is a stress relief groove 3012, which is used to release the stress of the mounting bracket 3 during use, so as to avoid the excessive stress of the mounting bracket 3 during use, which will reduce the service life of the mounting bracket 3. One end of the lower arm 301 is provided with a telescopic plug. The slot 3013 is used to realize the telescopic adjustment of the mounting bracket 3. The two sides of the telescopic slot 3013 are provided with adjustment slots 3014 at equal distances, which are used to fix the position of the mounting bracket 3 after the telescopic adjustment, so as to avoid the occurrence of change.

The upper support arm 302 includes a telescopic insert 3021, an adjustment block 3022, a mounting seat 3023 and a buckle 3024;

The upper arm 302 has an "L"-shaped structure. One end of the upper arm 302 is provided with a telescopic insert 3021 for inserting into the telescopic slot 3013 to realize the telescopic adjustment of the mounting bracket 3. The telescopic insert 3021 and the upper arm 302 The two adjusting blocks 3022 are installed at an equal distance on both sides of the telescopic insert 3021, which are used to cooperate with the adjusting grooves 3014 to fix the length of the mounting bracket 3 after telescopic adjustment. The upper arm 302 A mounting seat 3023 is installed at one end, which is used for the fixed installation of the lamp holder 4. The mounting seat 3023 and the upper support arm 302 are integrally formed. In order to realize the fixed installation of the lamp holder 4, and at the same time, the lamp holder 4 after installation is easy to disassemble and replace, and the four buckles 3024 and the installation seat 3023 are all integrally formed, in order to facilitate the fixed installation of the lamp holder 4. and disassembly, so that the lamp holder 4 can be easily replaced, and the lamp holder 4 and the mounting seat 3023 are fixedly connected by the buckle 3024 .

The distance between the two adjustment card slots 3014 is equal to the distance between the two adjustment card blocks 3022, so that the adjustment card grooves 3014 and the adjustment card blocks 3022 can cooperate with each other to realize the fixing of the length of the mounting bracket 3 and avoid loosening Phenomenon.

The working principle of the present invention is: in the process of using a space-saving and detachable bracket structure for replacing the bulb, first, the mounting bracket 3 and the bulb 5 need to be fixedly installed. First, according to the size of the interior space of the vehicle lamp, the installation The length of the bracket 3 is adjusted, and the position of the telescopic insert 3021 inside the telescopic slot 3013 is telescopically adjusted according to the actual installation position of the bulb 5 inside the lamp. The block 3022 is snapped into the adjustment slot 3014, and the position of the telescopic insert 3021 is fixed, so that the length of the installation bracket 3 will not change again, and the adjustment of the length of the installation bracket 3 is completed;

After the length adjustment of the mounting bracket 3 is completed, the mounting seat 3023 and the lamp holder 4 are fixedly installed by using the buckle 3024, and then the bulb 5 is fixedly installed above the lamp holder 4 through the screw thread, and the fixed installation of the bulb 5 is completed;

After the light bulb 5 is fixed and installed, the mounting bracket 3 and the light bulb 5 need to be fixedly installed in the interior of the car light, and the hand-held slot 3011 needs to be disassembled by hand, and the mounting bracket 3 and the light bulb 5 should be inserted into the interior of the car light from the disassembly opening 101, and the limit The clamping block 209 is aligned with the limit slot 203, and then the fixed installation column 207 is inserted into the fixed cylindrical groove 202, and the fixed installation column 207 is initially fixed and limited by the fixed support bottom rod 204 at the bottom of the fixed cylindrical groove 202, and then Hold the tightening screw 205, turn the tightening knob 206, insert the tightening screw 205 into the fixed installation column 207, and use the screw connection between the tightening screw 205 and the tightening thread groove 208, and use the tightening screw 205 to fix the support The bottom rod 204 and the fixed installation column 207 are firmly fixed, that is, the fixed installation of the installation bracket 3 and the bulb 5 is completed;

In the process of using the mounting bracket 3 to support the bulb 5, the limit slot 203 and the limit block 209 can be used to determine the installation position of the fixed installation post 207, so that the installation of the fixed installation post 207 is more accurate. Effectively avoid errors in the installation of the bulb 5, and use the stress relief groove 3012 to release the internal stress of the mounting bracket 3 when vibration occurs during the vehicle travel process, improving the stability and service life of the mounting bracket 3;

When the bulb 5 needs to be disassembled and replaced, use the sealing cover to open the disassembly opening 101, turn the tightening knob 206, and take out the tightening screw 205 from the tightening thread groove 208 to complete the release of the fixed installation post 207, and then Put your hand into the interior of the lamp through the dismantling opening 101, groping to remove the handheld slot 3011, and then lift the mounting bracket 3, so that the fixed mounting post 207 is taken out from the inside of the fixed cylindrical slot 202, and then the mounting bracket 3 and the bulb 5 are completely removed from the interior of the lamp. The inside of the lamp is taken out, and the replacement of the bulb 5 is completed outside the lamp, which is convenient and quick. After the bulb 5 is replaced, the mounting bracket 3 and the bulb 5 can be fixedly installed again in the same way.

It will be apparent to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, but that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments are to be regarded in all respects as illustrative and not restrictive, and the scope of the invention is to be defined by the appended claims rather than the foregoing description, which are therefore intended to fall within the scope of the claims. All changes within the meaning and scope of the equivalents of , are included in the present invention. Any reference signs in the claims shall not be construed as limiting the involved claim.

Claims (8)

1. a kind of supporting structure for saving the detachable and interchangeable light bulb in space, which is characterized in that the supporting structure includes car light housing (1), fixation kit (2), mounting bracket (3), lamp holder (4) and light bulb (5)；

Car light housing (1) bottom end offers disassembly aperture (101), and disassembly aperture (101) inner wall passes through fixation kit (2) it is fixedly installed with mounting bracket (3), described mounting bracket (3) one end is equipped with lamp holder (4), installation above the lamp holder (4) There are light bulb (5).

2. a kind of supporting structure for saving the detachable and interchangeable light bulb in space according to claim 1, it is characterised in that: described Fixation kit (2) includes fixing seat (201), fixed cylinder groove (202), limit card slot (203), fixes support bottom bar (204), is tight Gu column (207), fastening thread slot (208), limit card block (209) and connection is fixedly mounted in screw rod (205), tightening knob (206) Block (210)；

It is an integral molding structure between the car light housing (1) and fixing seat (201), fixing seat (201) inner vertical is opened Equipped with fixed cylinder groove (202), fixed cylinder groove (202) inner wall is opened up there are two limit card slot (203), and the fixation is round Column slot (202) bottom is equipped with fixed support bottom bar (204), is between the fixing seat (201) and fixed support bottom bar (204) Integrated formed structure, fixed support bottom bar (204) middle part are interspersed with fastening screw (205), institute by screw thread from bottom to top It states fastening screw (205) one end to be fixedly installed with tightening knob (206) by hot fusion connection, the fixed cylinder groove (202) Inside, which is equipped with, is fixedly mounted column (207), runs through in the middle part of the fixed installation column (207) and offers fastening thread slot (208), institute Fixed installation column (207) outer wall is stated to correspond at limit card slot (203) position there are two settings limit card block (209), described in two It is an integral molding structure between limit card block (209) and fixed installation column (207), fixed installation column (207) outside and two A limit card block (209) upright position is equipped with link block (210), the link block (210) and be fixedly mounted column (207) it Between pass through hot fusion connection.

3. a kind of supporting structure for saving the detachable and interchangeable light bulb in space according to claim 1, it is characterised in that: described Mounting bracket (3) includes lower branch arm (301) and upper branch arm (302), is sliding between the upper branch arm (301) and lower branch arm (302) It is dynamic to be telescopically connected to.

4. a kind of supporting structure for saving the detachable and interchangeable light bulb in space according to claim 3, it is characterised in that: described Lower branch arm (301) includes detachable handheld slot (3011), stress relief grooves (3012), flexible slot (3013) and adjusts card slot (3014)；

The lower branch arm (301) is " 7 " font structure, and lower branch arm (301) bottom end offers detachable handheld slot (3011), institute State it is equidistant above detachable handheld slot (3011) offer stress relief grooves (3012), described lower branch arm (301) one end offers Flexible slot (3013), flexible slot (3013) two sides equidistant offer adjust card slot (3014).

5. a kind of supporting structure for saving the detachable and interchangeable light bulb in space according to claim 3, it is characterised in that: described Upper branch arm (302) includes flexible cutting (3021), adjusts fixture block (3022), mounting base (3023) and buckle (3024)；

The upper branch arm (302) is L-shaped structure, and described upper branch arm (302) one end is equipped with flexible cutting (3021), described to stretch It is an integral molding structure between contracting cutting (3021) and upper branch arm (302), described flexible cutting (3021) two sides one end is equidistant From installation there are two fixture block (3022) are adjusted, described upper branch arm (302) one end is equipped with mounting base (3023), the mounting base (3023) it is an integral molding structure between upper branch arm (302), mounting base (3023) upper surface edge is equidistant to be equipped with Four buckles (3024) are an integral molding structure between four buckle (3024) and the mounting bases (3023).

6. a kind of supporting structure for saving the detachable and interchangeable light bulb in space according to claim 3, it is characterised in that: two The distance between described adjusting card slot (3014) is equal to the distance between two described adjusting fixture blocks (3022).

7. a kind of supporting structure for saving the detachable and interchangeable light bulb in space according to claim 5, it is characterised in that: described It is fixedly connected between lamp holder (4) and mounting base (3023) by buckling (3024).

8. a kind of supporting structure for saving the detachable and interchangeable light bulb in space according to claim 2, it is characterised in that: described The diameter of fixed cylinder groove (202) is equal to the diameter that column (207) are fixedly mounted, the fixed cylinder groove (202) and fixed installation It is fixedly connected by fastening screw (205) with fastening thread slot (208) between column (207).