阅读说明：本技术 一种毫米波雷达连接器组装机构 (Millimeter wave radar connector assembly mechanism ) 是由 黎桂新 陈韬 林锦夏 肖玲莉 于 2021-07-23 设计创作，主要内容包括：本发明涉及毫米波雷达连接器技术领域,具体为一种毫米波雷达连接器组装机构。所述连接器中壳固定在连接器底板上端,其中防护端盖固定在连接器中壳的上端,所述连接器底板内端下侧设置螺钉连接的散热板,所述连接器底板内端上侧放置卡扣连接的电源板,其中电源板上端放置有隔开板,所述隔开板位于连接器中壳的内端,其中隔开板与连接器中壳之间进行卡接连接,所述隔开板上端设置卡扣连接的雷达处理板,其中雷达处理板位于隔开板的内部上侧,所述连接器底板两端两侧对称开设内置槽,其中连接器底板两端两侧贯穿内置槽开设调距槽,所述内置槽内端上侧放置有卡位结构。(The invention relates to the technical field of millimeter wave radar connectors, in particular to a millimeter wave radar connector assembling mechanism. The connector mesochite is fixed in connector bottom plate upper end, and wherein the upper end at the connector mesochite is fixed to the protection end cover, connector bottom plate inner downside sets up the heating panel of screw connection, the power strip of buckle connection is placed to connector bottom plate inner upside, and wherein separate the board has been placed to the power strip upper end, separate the inner that the board is located the connector mesochite, carry out the joint between its median septum board and the connector mesochite and be connected, separate the board upper end and set up the radar processing board of buckle connection, wherein the radar processing board is located the inside upside that separates the board, built-in groove is seted up to connector bottom plate both ends bilateral symmetry, and wherein connector bottom plate both ends both sides are run through built-in groove and are seted up the roll adjustment groove, the screens structure has been placed to built-in inslot inner upside.)

1. The utility model provides a millimeter wave radar connector assembly device, includes connector bottom plate, connector mesochite and has the protection end cover of strengthening zonulae occludens, its characterized in that: the connector middle shell is fixed at the upper end of the connector bottom plate, the protective end cover is fixed at the upper end of the connector middle shell, a heat dissipation plate connected by screws is arranged at the lower side of the inner end of the connector bottom plate, a power supply plate connected by a buckle is arranged at the upper side of the inner end of the connector bottom plate, wherein the upper end of the power panel is provided with a partition plate which is positioned at the inner end of the connector middle shell, the partition plate is connected with the connector middle shell in a clamping manner, the upper end of the partition plate is provided with a radar processing plate connected by a buckle, wherein the radar processing board is positioned at the upper side of the inside of the partition board, built-in grooves are symmetrically arranged at two sides of two ends of the bottom board of the connector, wherein, the two sides of the two ends of the bottom plate of the connector are provided with distance adjusting grooves through the built-in grooves, the upper side of the inner end of the built-in groove is provided with a clamping structure, and locking structures connected with the rotating shaft are symmetrically arranged on two sides of two ends of the bottom plate of the connector, wherein the locking structures are positioned on the outer sides of the clamping structures.

2. The millimeter wave radar connector assembly mechanism of claim 1, wherein: the connector mesochite upper end bilateral symmetry sets up the calibration groove, and wherein the calibration groove presents the rectangle and sets up, and the width that the calibration groove was seted up is the third of connector mesochite width, connector mesochite both ends bilateral symmetry sets up the pole of stretching into of screw connection, and wherein stretch into the inside that pole one end slope fifteen degrees lies in the built-in groove, stretch into the pole lower extreme and set up integrated into one piece's first dislocation piece, wherein first dislocation piece bottom presents the arc setting, first dislocation piece upper end surface is the plane of tilt up octave.

3. The millimeter wave radar connector assembly mechanism of claim 1, wherein: protection end cover lower extreme bilateral symmetry sets up integrated into one piece's calibration board, and wherein the calibration board is located the inside of calibration groove, protection end cover lower extreme sets up the blotter of gluing the connection, and wherein the material that the blotter adopted is the rubber pad, the calibration board all runs through the blotter setting, protection end cover upper end bilateral symmetry sets up integrated into one piece's thickening layer, and wherein thickening layer upper end bilateral symmetry sets up the adjustment mechanism of screw connection, protection end cover presents the arc setting.

4. The millimeter wave radar connector assembly mechanism of claim 1, wherein: the screens structure includes flexible support rod, second dislocation piece, gangbar and supports the touch multitouch, and wherein flexible support rod is located the inside in built-in groove, be integrated into one piece's structure between flexible support rod and the connector bottom plate, wherein the second dislocation piece is located flexible support rod's lower extreme, be integrated into one piece's structure between second dislocation piece and the flexible support rod, be integrated into one piece's structure between flexible support rod, gangbar and the conflict piece, wherein the gangbar is located flexible support rod upper end one side, support the touch multitouch and be located the one end of gangbar.

5. The millimeter wave radar connector assembly mechanism of claim 4, wherein: the second dislocation piece is located the upper end of first dislocation piece, and wherein second dislocation piece upper end sets up the arcwall face, the lower extreme of second dislocation piece sets up the plane of downward sloping octave, the material that the elastic support pole adopted is the plastics pole, and wherein the piece of contradicting sets up to the semicircle piece.

6. The millimeter wave radar connector assembly mechanism of claim 1, wherein: locking structure is including the stretch-draw pole, parallel bar and locking tooth, wherein carries out the pivot between stretch-draw pole and the connector bottom plate and is connected, and the position of stretch-draw pole is corresponding with the position of touch multitouch, the one end at the stretch-draw pole is fixed in the parallel of parallel bar, and wherein the upper end surface of the parallel bar's lower extreme surface parallel laminating thickening layer, locking tooth and parallel bar between the structure of integrated into one piece, wherein locking tooth evenly distributed is in one side of the one end of parallel bar.

7. A millimeter wave radar connector assembly mechanism according to claim 3, wherein: adjustment mechanism is including doing work frame, follower gear, break-in groove and kelly, and wherein do work the frame by the screw symmetry fix in thickening layer upper end both sides, the follower gear is fixed in the inner medial side of doing work frame by the pivot, and wherein break-in groove runs through and does work frame upper end medial side and opens and establish, the one end of kelly runs through and penetrates the groove setting, wherein is integrated into one piece's structure between kelly and the doing work frame, intermeshing between follower gear and the locking tooth.

8. The millimeter wave radar connector assembly mechanism of claim 7, wherein: the utility model discloses a follow-up gear, including kelly, kelly one end sets up integrated into one piece's fixed frame, wherein fixed frame is located between the tooth on the follow-up gear, fixed frame one end surface sets up the arcwall face of laminating follow-up gear, kelly one end medial side sets up integrated into one piece's control lever, and wherein the control lever stretches out the outside setting of wearing the groove.

Technical Field

The invention relates to the technical field of millimeter wave radar connectors, in particular to a millimeter wave radar connector assembling mechanism.

Background

The millimeter wave radar connector uses millimeter waves, generally, the millimeter waves refer to a frequency domain of 30-300 GHz, wherein the 24GHz radar connector is mainly used for automobile collision avoidance, and for vehicle safety, the most important judgment basis is relative distance and relative speed information between two automobiles. If the distance between vehicles running at high speed is too close, rear-end accidents are easily caused. Therefore, common collision avoidance systems have as a primary detection task the measurement of the relative distance between vehicles. The method is mainly used for forward collision avoidance, lateral collision avoidance, backward collision avoidance, automatic cruise, automatic start and stop of the automobile, blind spot monitoring, pedestrian detection and automatic driving of the automobile.

The millimeter wave radar connector has the advantages of millimeter wave guidance and photoelectric guidance. Compared with a centimeter-wave radar, the millimeter-wave radar has the characteristics of small volume, easy integration and high spatial resolution. Compared with optical sensors such as a camera, infrared sensors, laser sensors and the like, the millimeter wave radar has the advantages of being strong in fog, smoke and dust penetrating capability and anti-interference capability and having all-weather (except rainy days) all-day characteristics. Due to the development and progress of radar technology, the existing millimeter wave radar connector is applied to a plurality of industries such as automotive electronics, security protection, unmanned aerial vehicles and intelligent transportation.

The invention provides a millimeter wave radar connector assembling mechanism, which aims to solve the problems in the process.

Disclosure of Invention

The invention aims to provide a millimeter wave radar connector assembling mechanism to solve the problems in the process.

In order to achieve the purpose, the invention provides the following technical scheme: a millimeter wave radar connector assembling mechanism is characterized in that a connector middle shell is fixed at the upper end of a connector bottom plate, a protective end cover is fixed at the upper end of the connector middle shell, a heat dissipation plate connected by screws is arranged at the lower side of the inner end of the connector bottom plate, a power supply plate connected by buckles is placed at the upper side of the inner end of the connector bottom plate, a partition plate is placed at the upper end of the power supply plate and is positioned at the inner end of the connector middle shell, the partition plate is connected with the connector middle shell in a clamping manner, a radar processing plate connected by buckles is arranged at the upper end of the partition plate, the radar processing plate is positioned at the upper side of the inner part of the partition plate, built-in grooves are symmetrically formed at two ends of the connector bottom plate, distance adjusting grooves are formed in the two sides of the two ends of the connector bottom plate in a penetrating manner, clamping structures are placed at the upper side of the inner ends of the built-in grooves, locking structures connected by rotating shafts are symmetrically arranged at two ends of the connector bottom plate, wherein the locking structure is positioned at the outer side of the clamping structure.

Preferably, calibration grooves are symmetrically formed in the two sides of the upper end of the connector middle shell, the calibration grooves are formed in a rectangular shape, the width of each calibration groove is one third of the width of the connector middle shell, screw connection extending rods are symmetrically arranged on the two sides of the two ends of the connector middle shell, one end of each extending rod inclines for fifteen degrees and is located inside the corresponding built-in groove, the lower end of each extending rod is provided with a first dislocation block which is integrally formed, the bottom of each first dislocation block is formed in an arc shape, and the upper end surface of each first dislocation block is a plane inclined upwards for eight degrees.

Preferably, protection end cover lower extreme bilateral symmetry sets up integrated into one piece's calibration board, and wherein the calibration board is located the inside of calibration groove, protection end cover lower extreme sets up the blotter of gluing the connection, and wherein the material that the blotter adopted is the rubber pad, the calibration board all runs through the blotter setting, protection end cover upper end bilateral symmetry sets up integrated into one piece's thickening layer, and wherein thickening layer upper end bilateral symmetry sets up the adjustment mechanism of screw connection, protection end cover presents the arc setting.

Preferably, the screens structure includes flexible support rod, second dislocation piece, gangbar and supports the touch multitouch, and wherein flexible support rod is located the inside of built-in groove, be integrated into one piece's structure between flexible support rod and the connector bottom plate, wherein the second dislocation piece is located flexible support rod's lower extreme, be integrated into one piece's structure between second dislocation piece and the flexible support rod, be integrated into one piece's structure between flexible support rod, gangbar and the conflict piece, wherein the gangbar is located flexible support rod upper end one side, support the touch multitouch and be located the one end of gangbar.

Preferably, the second dislocation piece is located the upper end of first dislocation piece, and wherein second dislocation piece upper end sets up the arcwall face, the lower extreme of second dislocation piece sets up the plane of downward sloping octave, the material that the elastic support pole adopted is the plastics pole, and wherein the conflict piece sets up to the semicircle piece.

Preferably, locking structure is including the stretch-draw pole, parallel bar and locking tooth, wherein carries out the pivot between stretch-draw pole and the connector bottom plate and is connected, and the position of stretch-draw pole is corresponding with the position of conflict piece, the one end at the stretch-draw pole is fixed in the parallel bar is articulated, and wherein the upper end surface of the parallel bar's of the parallel laminating thickening layer of lower extreme surface, locking tooth and parallel bar between be integrated into one piece's structure, wherein locking tooth evenly distributed is in one side of the one end of parallel bar.

Preferably, adjustment mechanism is including doing work frame, follow-up gear, break-in groove and kelly, and wherein do work frame is fixed in thickening layer upper end both sides by the screw symmetry, the inner medial side at doing work frame is fixed by the pivot to the follow-up gear, and wherein break-in groove runs through and does work frame upper end medial side and opens and establish, the one end of kelly runs through and penetrates the groove setting, wherein is integrated into one piece's structure between kelly and the doing work frame, intermeshing between follow-up gear and the locking tooth.

Preferably, kelly one end sets up integrated into one piece's fixed frame, and wherein fixed frame is located between the tooth on the follower gear, fixed frame one end surface sets up the arcwall face of laminating follower gear, kelly one end medial side sets up integrated into one piece's control lever, and wherein the control lever stretches out the outside setting of wearing the groove.

Compared with the prior art, the invention has the beneficial effects that:

1. through the arrangement of the connector, the connector middle shell, the connector bottom plate and the protection end cover can be quickly connected, convenience can be brought to assembly of the millimeter wave radar connector, convenience is brought to assembly work of workers, and time required by assembly of the millimeter wave radar connector can be shortened;

2. by the arrangement of the connector middle shell, the connector middle shell can be better limited by the protective end cover while the protective end cover is connected with the connector bottom plate, and in addition, the connector middle shell can be better protected by the cushion pad and the protective end cover;

3. according to the invention, the distance rod can be contacted with the abutting block while the locking structure is connected with the adjusting mechanism, so that the clamping structure and the locking structure are more tightly connected in the built-in groove, and the fixed connection between the connector middle shell and the connector bottom plate is effectively enhanced.

Drawings

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

FIG. 2 is a schematic perspective view of a connector base plate in half section according to the present invention;

FIG. 3 is a perspective view of a connector center housing of the present invention;

FIG. 4 is a schematic perspective view, in half section, of a center housing and a protective end cap of the connector of the present invention;

FIG. 5 is an enlarged view of the structure at A in FIG. 2 according to the present invention;

fig. 6 is an enlarged view of the invention at B in fig. 2.

In the figure: the connector comprises a connector bottom plate 1, a heat dissipation plate 11, a power supply plate 12, a separation plate 13, a radar processing plate 14, an internal groove 15, a distance adjusting groove 16, a clamping structure 17, an elastic support rod 1701, a second dislocation block 1702, a linkage rod 1703, an interference block 1704, a locking structure 18, a distance pulling rod 1801, a parallel rod 1802, a locking tooth 1803, a connector middle shell 2, a calibration groove 21, an extension rod 22, a first dislocation block 23, a protective end cover 3, a calibration plate 31, a buffer cushion 32, a thickening layer 33, an adjusting mechanism 34, a work frame 3401, a follow-up gear 3402, a penetrating groove 3403, a clamping rod 3404, a fixing frame 34041 and a control rod 34042.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 6, the present invention provides a technical solution: the connector comprises a connector bottom plate 1, a connector middle shell 2 and a protective end cover 3 with reinforced tight connection, wherein the connector middle shell 2 is fixed at the upper end of the connector bottom plate 1, the protective end cover 3 is fixed at the upper end of the connector middle shell 2, a screw-connected heat dissipation plate 11 is arranged at the lower side of the inner end of the connector bottom plate 1, the heat dissipation plate 11 can dissipate heat generated on a power supply plate 12, the heat dissipation plate 11 is made of aluminum plate, the thickness of the heat dissipation plate 11 can be controlled according to the heat condition of the power supply plate 12, the power supply plate 12 connected with a buckle is arranged at the upper side of the inner end of the connector bottom plate 1, a separation plate 13 is arranged at the upper end of the power supply plate 12, the separation plate 13 is positioned at the inner end of the connector middle shell 2, the separation plate 13 is connected with the connector middle shell 2 in a clamping manner, a radar processing plate 14 connected with the buckle is arranged at the upper end of the separation plate 13, the radar processing plate 14 is positioned at the inner upper side of the separation plate 13, built-in grooves 15 are symmetrically formed in two sides of two ends of the connector bottom plate 1, distance adjusting grooves 16 are formed in the two sides of two ends of the connector bottom plate 1, the built-in grooves 15 penetrate through the two sides of the two ends of the connector bottom plate 1, clamping structures 17 are placed on the upper sides of the inner ends of the built-in grooves 15, locking structures 18 connected through rotating shafts are symmetrically formed in two sides of two ends of the connector bottom plate 2, and the locking structures 18 are located on the outer sides of the clamping structures 17.

The power supply board 12 is first mounted on the connector chassis 1, the insertion rod 22 is further inserted into the built-in slot 15, the second displacement block 1702 is then displaced by the first displacement block 23, the position of the insertion rod 22 is then fixed by the elastic support rod 1701, and at this time, the connector chassis 2 and the connector chassis 1 are fixed, and then the partition board 13 and the radar processing board 14 are fixed inside the connector chassis 2.

Calibration groove 21 is seted up to 2 upper end bilateral symmetry in connector mesochite, wherein calibration groove 21 presents the rectangle and offers, the width that calibration groove 21 was seted up is the third of 2 width in the connector mesochite, 2 both ends bilateral symmetry in the connector mesochite set up the pole 22 of stretching into of screw connection, it presents half a few font setting to stretch into pole 22, wherein stretch into the bottom distance of pole 22 to built-in groove 15 and be greater than the length of first dislocation piece 23, wherein stretch into the inside that pole 22 one end slope fifteen degrees is located built-in groove 15, it sets up integrated into one piece's first dislocation piece 23 to stretch into pole 22 lower extreme, wherein first dislocation piece 23 bottom presents the arc setting, first dislocation piece 23 upper end surface is the plane of tilt up octadegree.

3 lower extreme bilateral symmetry of protective end cover sets up integrated into one piece's calibration board 31, wherein calibration board 31 is located the inside of calibration groove 21, 3 lower extremes of protective end cover set up the blotter 32 of gluing the connection, wherein the material that blotter 32 adopted is the rubber pad, calibration board 31 all runs through the setting of blotter 32, 3 cooperation blotters 32 of protective end cover can protect the upper end of connector mesochite 2, blotter 32 can decide thickness according to the in-service use condition, 31 upper end bilateral symmetry of protective end cover sets up integrated into one piece's thickening layer 33, wherein 33 upper end bilateral symmetry of thickening layer sets up screw connection's adjustment mechanism 34, protective end cover 3 presents the arc setting, the thickness of 3 middle-ends of protective end cover is greater than the thickness of both sides, wherein 3 must solid settings of protective end cover.

The protection end cover 3 is placed above the connector middle shell 2, meanwhile, the calibration plate 31 is located inside the calibration groove 21, the parallel rod 1802 is further rotated by the aid of the distance rod 1801, the distance rod 1801 is parallel to the thickening layer 33, the distance rod 1801 is further inserted into the working frame 3401, and then the distance rod 1801 pushes the follow-up gear 3402 through the locking teeth 1803.

The follow-up gear 3402 can collide the clamping rod 3404 through the fixing frame 34042, the clamping rod 3404 deforms, the fixing frame 34041 limits teeth on the next follow-up gear 3402, and the protection end cover 3 is fixed at the moment.

The clamping structure 17 comprises an elastic supporting rod 1701, a second dislocation block 1702, a linkage rod 1703 and an abutting block 1704, wherein the elastic supporting rod 1701 is located inside the built-in groove 15, an integrally formed structure is arranged between the elastic supporting rod 1701 and the connector base plate 1, the second dislocation block 1702 is located at the lower end of the elastic supporting rod 1701, the integrally formed structure is arranged between the second dislocation block and the elastic supporting rod 1701, the linkage rod 1703 and the abutting block 1704 are all integrally formed structures, the linkage rod 1703 is located on one side of the upper end of the elastic supporting rod 1701, and the abutting block 1704 is located at one end of the linkage rod 1703.

The second dislocation piece 1702 is located at the upper end of the first dislocation piece 23, wherein the upper end of the second dislocation piece 1702 is provided with an arc-shaped surface, the lower end of the second dislocation piece 1702 is provided with a plane inclined downward by eight degrees, the elastic support bar 1701 is made of a plastic rod, and the interference piece 1704 is provided as a semicircular piece.

The locking structure 18 comprises a distance rod 1801, a parallel rod 1802 and locking teeth 1803, wherein the distance rod 1801 is connected with the connector bottom plate 1 through a rotating shaft, the position of the distance rod 1801 corresponds to the position of the interference block 1704, the parallel rod 1802 is hinged and fixed at one end of the distance rod 1801, the lower end surface of the parallel rod 1802 is attached to the upper end surface of the thickening layer 33 in parallel, the locking teeth 1803 and the parallel rod 1802 are of an integrally formed structure, and the locking teeth 1803 are uniformly distributed on one side of one end of the parallel rod 1802.

The pull rod 1801 can collide the linkage rod 1703 through the contact block 1704, meanwhile, the linkage rod 1703 can press the elastic support rod 1701 downwards, connection between the clamping structure 17 and the locking structure 18 can be strengthened at the moment, in addition, the control rod 34042 can be operated, so that the locking teeth 1803 and the follow-up gear 3402 are separated, and the linkage rod 1703 is pulled upwards to separate the clamping structure 17 from the locking structure 18.

The adjusting mechanism 34 comprises a working frame 3401, a following gear 3402, a penetrating groove 3403 and a clamping rod 3404, wherein the working frame 3401 is symmetrically fixed on two sides of the upper end of the thickening layer 33 by screws, the following gear 3402 is fixed on the middle side of the inner end of the working frame 3401 by a rotating shaft, one end of teeth on the following gear 3402 is provided with an arc-shaped surface, the other end is provided with a right-angled plane, one side of the arc-shaped surface is contacted with the locking teeth 1803 and enters the other locking teeth 1803 to enable the following gear 3402 to rotate by pushing, meanwhile, the following gear 3402 utilizes the right-angled plane and the locking teeth 1803 to fix the position of the parallel rod 1802, the penetrating groove 3403 penetrates through the middle side of the upper end of the working frame 3401, one end of the clamping rod 3404 penetrates through the penetrating groove 3403 and is arranged, an integrally formed structure is arranged between the clamping rod 3404 and the working frame 3401, the clamping rod 3404 is in a V shape, the clamping rod 3404 is arranged on the working frame 3401 in an upward inclined six-degree manner, the clamping rod 3404 is used for fixing the position of the follow-up gear 3402, wherein the clamping rod 3404 is made of a plastic rod, and the follow-up gear 3402 is meshed with the locking tooth 1803.

Card pole 3404 one end sets up integrated into one piece's fixed frame 34041, wherein fixed frame 34041 is located between the tooth on follow-up gear 3402, fixed frame 34041 outer end sets up the arcwall face, wherein the length of fixed frame 34041 is two-thirds of tooth length on follow-up gear 3402, fixed frame 34041 one end surface sets up laminating follow-up gear 3402's arcwall face, card pole 3404 one end medial side sets up integrated into one piece's control lever 34042, wherein control lever 34042 stretches out the outside setting that penetrates groove 3403, there is the interval at the position that control lever 34042 stretches out to penetrate groove 3403 and acting frame 3401, and then the in-process of fixed frame 34041 motion, control lever 34042 can not touch acting frame 3401.

When the connector bottom plate 1, the connector middle shell 2 and the protective end cover 3 need to be fixedly connected, firstly, the power panel 12 is installed on the connector bottom plate 1, the extension rod 22 is further inserted into the inner portion of the built-in groove 15, then, the first dislocation block 23 is used for staggering the arrangement of the second dislocation block 1702, then, the position of the extension rod 22 is fixed by the elastic support rod 1701, at this time, the fixing between the connector middle shell 2 and the connector bottom plate 1 can be completed, then, the partition plate 13 and the radar processing plate 14 are fixed in the connector middle shell 2, further, the protective end cover 3 is placed above the connector middle shell 2 by using the calibration groove 21, meanwhile, the calibration plate 31 is positioned in the calibration groove 21, further, the parallel rod 1802 is rotated by using the pull rod 1801, the pull rod 1801 is parallel to the thickening layer 33, further, the pull rod 1801 is inserted into the frame 3401 for doing work, then, the distance rod 1801 pushes the follower gear 3402 by using the locking teeth 1803, the follower gear 3402 can collide with the clamping rod 3404 through the fixing frame 34042, the clamping rod 3404 deforms, the fixing frame 34041 limits the teeth on the next follower gear 3402, at the moment, along with the continuous pushing of the parallel rods 1801, the distance rod 1801 can collide with the inside of the distance adjusting groove 16, the further distance rod 1801 can collide with the linkage rod 1703 through the collision block 1704, meanwhile, the linkage rod 1703 can press the elastic support rod 1701 downwards, the connection between the clamping structure 17 and the locking structure 18 can be strengthened, in addition, the control rod 34042 can be operated, so that the locking teeth 1803 are separated from the follower gear 3402, the linkage rod 1703 is pulled upwards, and the clamping structure 17 is separated from the locking structure 18.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.