A fixing support for fixing a lithium battery

Abstract

The application discloses a fixing support for fixing lithium batteries, which comprises an outer shell, an inner shell body is arranged in the inner cavity of the outer shell, the inner shell body is embedded with a mounting rack, a plurality of mounting assemblies for mounting lithium batteries are arranged on the mounting rack, a plurality of damping assemblies are fixed between the inner shell body and the outer shell, the mounting assembly comprises a mounting hole arranged on the mounting rack, a positioning piece is arranged at the bottom end of the mounting hole, a jacking piece is symmetrically arranged at the top end of the side wall of the mounting hole, the upper and lower ends of the lithium battery are respectively abutted with the positioning piece and the jacking piece, a series cable is arranged in the mounting rack, the plurality of positioning pieces are electrically connected through the series cable, a plurality of indicating assemblies are arranged in the outer shell, the indicating assemblies are arranged in correspondence with the lithium batteries, a heat dissipation assembly is arranged on the outer shell, and the heat dissipation assembly is communicated with the inner cavity of the outer shell. The fixing support of the application is convenient and efficient for mounting lithium batteries, and is convenient for judging the mounting state of the lithium batteries during maintenance, thereby improving the efficiency of maintenance.

Description

Technical Field

[0001] This invention relates to the field of lithium battery application technology, and in particular to a fixing bracket for fixing lithium batteries. Background Technology

[0002] Lithium batteries have advantages such as high energy density, smaller size and weight than other batteries of the same specifications, high charge-discharge cycle life, long life, and less susceptibility to temperature, and are widely used in new energy vehicles and electronic devices.

[0003] However, the voltage of a single lithium battery is limited by the material itself, resulting in a relatively low voltage. Therefore, multiple lithium batteries are generally connected in series and parallel to meet the usage requirements. Currently, lithium batteries are widely used in pure electric new energy vehicles as power sources. Generally, lithium battery packs are used to power the electric motor. A lithium battery pack is assembled by connecting multiple lithium batteries in series and parallel on a bracket. The main function of the bracket is to fix the lithium batteries in place, preventing them from coming out of the circuit during use and causing a circuit break, as well as preventing the lithium batteries from rupturing and exploding due to vibration and impact.

[0004] However, existing lithium battery mounting brackets are cumbersome to install, reducing installation efficiency. Furthermore, during battery pack maintenance, it's impossible to determine which lithium battery is faulty, requiring individual inspection, which significantly slows down the maintenance process. Therefore, there is an urgent need for a lithium battery mounting bracket to solve these technical problems. Summary of the Invention

[0005] The purpose of this invention is to provide a fixing bracket for fixing lithium batteries, so as to solve the problems existing in the prior art.

[0006] To achieve the above objectives, the present invention provides the following solution: The present invention provides a fixing bracket for fixing a lithium battery, including a housing, an inner housing installed in the inner cavity of the housing, a mounting frame embedded and fixedly connected in the inner housing, and a plurality of mounting components for mounting lithium batteries provided on the mounting frame; a plurality of vibration damping components are fixedly connected between the inner housing and the housing.

[0007] The mounting assembly includes mounting holes formed on the mounting bracket, a positioning element is provided at the bottom end of the mounting hole, and a clamping element is symmetrically provided at the top end of the side wall of the mounting hole, and the upper and lower ends of the lithium battery abut against the positioning element and the clamping element respectively.

[0008] The mounting frame is internally arranged with series cables, and several positioning components are electrically connected through the series cables.

[0009] The housing is provided with a plurality of indicator components, which are configured to correspond to the lithium battery.

[0010] The outer casing is provided with a heat dissipation component, which is in communication with the inner cavity of the outer casing.

[0011] Preferably, the positioning element includes a positioning spring fixed to the bottom end of the mounting hole, a positioning plate fixed to the top end of the positioning spring, and the positioning plate slidably connected to the side wall of the mounting hole; one end of the lithium battery abuts against the positioning plate; and the lithium battery is electrically connected to the series cable through the positioning plate and the positioning spring.

[0012] Preferably, the clamping member includes clamping holes symmetrically formed on the side wall of the mounting hole, a wedge-shaped clamping block slidably connected in the clamping hole, the clamping block extending out of the clamping hole and detachably connected to the top of the lithium battery; a clamping spring is fixedly connected between the clamping block and the clamping hole; a loosening member is detachably connected to the top of the clamping block, and the loosening member is located in the mounting bracket.

[0013] Preferably, the loosening component includes a loosening hole formed at the top of the mounting bracket, the bottom end of the loosening hole communicating with the tightening hole; a loosening rod is slidably connected in the loosening hole, the bottom end of the loosening rod being detachably connected to the wedge-shaped surface of the tightening block; the top end of the loosening rod extends out of the loosening hole and is fixedly connected to a loosening button, and a loosening spring is fixedly connected between the bottom end of the loosening button and the loosening hole.

[0014] Preferably, a plurality of the lithium batteries are connected in series via the series cable, one end of the series cable extends out of the housing and is electrically connected to a plug, the plug being embedded in the housing.

[0015] Preferably, the outer casing includes a shell body, and a cover is detachably connected to the top of the shell body; a connecting strip is fixedly connected to the top of the shell body; the top of the connecting strip abuts against the cover on the outer side wall; and a plurality of serial strips are fixedly connected to the bottom of the cover, with the two ends of the serial strips being electrically connected to adjacent lithium batteries respectively.

[0016] Preferably, the indicating component includes an indicator light, a first control component, and a second control component connected in series. The indicator light is installed on the top of the side wall of the mounting hole and corresponds one-to-one with the lithium battery. The first control component is installed in the mounting hole and detachably connected to the positioning plate. The second control component is installed in the connecting strip and detachably connected to the cover.

[0017] Preferably, the first control component includes a push-button switch installed in the mounting hole, the push-button switch being electrically connected to the indicator light and the second control component; the keycap of the push-button switch is detachably connected to the positioning plate.

[0018] Preferably, the second control component includes a control hole formed on the connecting strip, a control rod slidably connected in the control hole, a control block fixedly connected to the bottom end of the control rod, and the control block detachably connected in the circuit; a control spring fixedly connected to the bottom end of the control block; and a control button fixedly connected to the bottom end of the cover, the control button being correspondingly arranged with the control hole and detachably connected to the control rod.

[0019] Preferably, the heat dissipation assembly includes two symmetrical heat dissipation holes that penetrate through the two side walls of the housing, and a heat dissipation fan is installed in either of the heat dissipation holes; an isolation mesh is embedded and fixed in the heat dissipation hole; a plurality of crisscrossing connecting holes are respectively opened in the side wall of the inner housing and the mounting bracket, and the connecting holes are respectively connected to the mounting holes.

[0020] This invention discloses the following technical effects: It provides a lithium battery mounting bracket, primarily addressing the problems of cumbersome lithium battery installation steps and difficulty in identifying battery faults during subsequent inspection and maintenance. This application reduces the impact of external vibrations on the lithium battery by installing an inner shell within the outer shell using vibration-damping components, thus reducing the impact force on the lithium battery, lowering the probability of impact explosion, and improving safety. An embedded mounting bracket houses the lithium battery, which is installed individually in its mounting holes, reducing collisions between batteries. Positioning and clamping components within the mounting holes clamp the lithium battery for secure installation; simply inserting the battery into the mounting hole achieves automatic fixation, improving installation efficiency. An indicator component corresponds one-to-one with each lithium battery, indicating its installation status during maintenance, facilitating quick location of improperly installed batteries and improving maintenance efficiency. This mounting bracket offers convenient and efficient lithium battery installation, while also facilitating assessment of battery installation status during maintenance, further enhancing efficiency. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of the present invention;

[0023] Figure 2 for Figure 1 A magnified view of part A in the image;

[0024] Figure 3 for Figure 1 A magnified view of part B in the image;

[0025] Figure 4 for Figure 1 A magnified view of part C;

[0026] Figure 5 This is a top view of the heat dissipation component of the present invention;

[0027] Figure 6 This is a circuit diagram of the indicator component of the present invention;

[0028] The components are as follows: 1. Outer shell; 2. Inner shell; 3. Mounting bracket; 4. Lithium battery; 11. Plug; 12. Shell body; 13. Cover; 14. Connecting strip; 15. Series strip; 16. Control button; 17. Heat dissipation hole; 18. Cooling fan; 19. Isolation mesh; 110. Connecting hole; 111. Vibration damping component; 115. Control hole; 116. Control rod; 117. Control block; 118. Control spring; 31. Mounting hole; 32. Series cable; 33. Positioning spring; 34. Positioning plate; 35. Tightening hole; 36. Tightening block; 37. Tightening spring; 38. Loosening hole; 39. Loosening rod; 310. Loosening button; 311. Loosening spring; 312. Indicator light; 313. Push button switch. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] Reference Figure 1-6 The present invention provides a fixing bracket for fixing lithium batteries, including a shell 1, an inner shell 2 installed in the inner cavity of the shell 1, a mounting frame 3 embedded and fixedly connected in the inner shell 2, and a plurality of mounting components for mounting lithium batteries 4 provided on the mounting frame 3; a plurality of vibration damping components 111 are fixedly connected between the inner shell 2 and the shell 1.

[0032] The mounting components include mounting holes 31 formed on the mounting bracket 3, a positioning element is provided at the bottom end of the mounting hole 31, and a clamping element is symmetrically provided at the top end of the side wall of the mounting hole 31. The upper and lower ends of the lithium battery 4 abut against the positioning element and the clamping element respectively.

[0033] The mounting bracket 3 has a series cable 32 inside, and several positioning components are electrically connected through the series cable 32.

[0034] The outer casing 1 is provided with several indicator components, which are correspondingly arranged with the lithium battery 4;

[0035] A heat dissipation component is provided on the outer casing 1, and the heat dissipation component is connected to the inner cavity of the outer casing 1.

[0036] This invention discloses a mounting bracket for lithium batteries, mainly to solve the problems of cumbersome lithium battery installation steps and inconvenience in identifying lithium battery fault points during subsequent inspection and maintenance on existing lithium battery mounting brackets. This application reduces the impact of external vibrations on lithium batteries 4 by installing an inner shell 2 inside the outer shell 1 through a vibration damping component 111, thereby reducing the impact force on lithium batteries 4, lowering the probability of lithium batteries 4 exploding due to impact, and improving safety. A mounting bracket 3 is embedded in the inner shell 2, and lithium batteries 4 are installed in the mounting holes 31 of the mounting bracket 3. The lithium batteries 4 are installed individually, reducing mutual collisions between lithium batteries 4. Positioning and clamping components are set in the mounting holes 31 to clamp the lithium batteries 4 and complete the fixation. During installation, the lithium batteries 4 can be directly inserted into the mounting holes 31 to achieve automatic fixation, improving installation efficiency. An indicator component corresponds one-to-one with the lithium batteries 4, indicating the installation status of the lithium batteries 4 during maintenance, facilitating quick location of improperly installed lithium batteries 4, and improving maintenance efficiency.

[0037] The scheme is further optimized. The positioning component includes a positioning spring 33 fixed to the bottom of the mounting hole 31, and a positioning plate 34 fixed to the top of the positioning spring 33. The positioning plate 34 is slidably connected to the side wall of the mounting hole 31. One end of the lithium battery 4 abuts against the positioning plate 34. The lithium battery 4 is electrically connected to the series cable 32 through the positioning plate 34 and the positioning spring 33. The clamping component includes clamping holes 35 symmetrically opened on the side wall of the mounting hole 31. A wedge-shaped clamping block 36 is slidably connected in the clamping hole 35. The clamping block 36 extends out of the clamping hole 35 and is detachably connected to the top of the lithium battery 4. A clamping spring 37 is fixedly connected between the clamping block 36 and the clamping hole 35; a loosening component is detachably connected to the top of the clamping block 36, and the loosening component is located inside the mounting bracket 3; the loosening component includes a loosening hole 38 opened at the top of the mounting bracket 3, the bottom end of the loosening hole 38 communicating with the clamping hole 35; a loosening rod 39 is slidably connected inside the loosening hole 38, the bottom end of the loosening rod 39 is detachably connected to the wedge-shaped surface of the clamping block 36; the top end of the loosening rod 39 extends out of the loosening hole 38 and is fixedly connected to a loosening button 310, and a loosening spring 311 is fixedly connected between the bottom end of the loosening button 310 and the loosening hole 38. The positioning spring 33 and the positioning plate 34 are respectively made of wire material, and serve as the connection structure of the electrodes of the lithium battery 4 when positioning the lithium battery 4. The wedge-shaped clamping block 36 is slidably connected in the clamping hole 35. When installing the lithium battery 4, the lithium battery 4 is inserted into the mounting hole 31. The bottom end of the lithium battery 4 pushes the wedge-shaped surface of the clamping block 36 to push the clamping block 36 back into the clamping hole 35 until the lithium battery 4 contacts the positioning plate 34 and is pressed down to the appropriate position. The top end of the lithium battery 4 is lower than the bottom end of the clamping block 36. The clamping block 36 extends out of the clamping hole 35 and locks the top end of the lithium battery 4, so that the lithium battery 4 is clamped and fixed by the positioning plate 34 and the clamping block 36. When disassembling, press the loosening button 310. The loosening rod 39 contacts the wedge-shaped surface of the clamping block 36 and pushes the clamping block 36 back into the clamping hole 35. The top end of the lithium battery 4 loses pressure, the positioning spring 33 rebounds, and the lithium battery 4 is pushed out of the mounting hole 31 through the top plate for easy removal. The loosening spring 311 is used to push the loosening rod 39 to reset.

[0038] In a further optimized design, several lithium batteries 4 are connected in series via a series cable 32. One end of the series cable 32 extends out of the outer casing 1 and is electrically connected to a plug 11, which is embedded in the outer casing 1. In the battery pack composed of lithium batteries 4, the lithium batteries 4 are connected in series. Therefore, the lower electrode of the lithium battery 4 is connected in series into the circuit of the series cable 32 via a positioning plate 34 and a positioning spring 33. The arrangement order and type of the cables are conventional choices in the prior art and will not be elaborated here. The purpose of the plug 11 is to quickly disconnect the battery pack from external electrical equipment.

[0039] Further optimization of the design: the outer casing 1 includes a casing body 12, with a cover 13 detachably connected to the top of the casing body 12; a connecting strip 14 is fixedly connected to the top of the casing body 12; the top of the connecting strip 14 abuts against the outer wall cover 13; several series strips 15 are fixedly connected to the bottom of the cover 13, and the two ends of the series strips 15 are electrically connected to adjacent lithium batteries 4 respectively. The casing 1 includes the cover 13 of the casing body 12, the purpose of which is to protect the top of the lithium batteries 4 and facilitate disassembly and maintenance; the function of the series strips 15 is to connect the upper electrodes of the lithium batteries 4 in series, and to use them in conjunction with the series cable 32 to connect all the lithium batteries 4 in series.

[0040] The scheme is further optimized. The indicating component includes an indicator light 312, a first control component, and a second control component connected in series. The indicator light 312 is installed on the top of the side wall of the mounting hole 31 and corresponds one-to-one with the lithium battery 4. The first control component is installed in the mounting hole 31 and detachably connected to the positioning plate 34. The second control component is installed in the connecting strip 14 and detachably connected to the cover 13. The function of the indicating component is to judge the installation status of the lithium battery 4. When the lithium battery 4 is not installed in place, the indicator light 312 does not light up, providing a corresponding indication. The first control component is installed in the mounting hole 31 and can check the installation status of the lithium battery 4 and control the on / off of the circuit. The second control component is installed in the connecting strip 14 and combined with the cover 13, acting as a master switch to control the on / off of the indicating component circuit. When the lithium battery 4 is not installed in place, the first control component disconnects the corresponding indicator light 312, serving as an indication. The second control component disconnects when the cover 13 is closed and connects when the cover 13 is open, controlling the circuit of the indicating component to be disconnected after installation and connected when the cover 13 is opened, so as not to waste power when the cover 13 is closed.

[0041] In a further optimized design, the first control component includes a push-button switch 313 installed in the mounting hole 31. The push-button switch 313 is electrically connected to the indicator light 312 and the second control component. The keycap of the push-button switch 313 is detachably connected to the positioning plate 34. When the lithium battery 4 pushes the positioning plate 34 down, it moves the push-button switch 313 to the connection position. When the positioning plate 34 is not in position, the push-button switch 313 will not be connected. Therefore, when the lithium battery 4 is not installed in place, the corresponding indicator light 312 will not light up.

[0042] Further optimizing the design, the second control component includes a control hole 115 on the connecting strip 14, a control rod 116 slidably connected within the control hole 115, a control block 117 fixedly connected to the bottom end of the control rod 116, and the control block 117 detachably connected to the circuit; a control spring 118 is fixedly connected to the bottom end of the control block 117; a control button 16 is fixedly connected to the bottom end of the cover 13, the control button 16 is correspondingly positioned with the control hole 115 and detachably connected to the control rod 116. When the cover 13 is opened, the control block 117 moves upward under the push of the control spring 118, connecting to the circuit and activating the indicator component circuit, enabling all indicator lights 312 to illuminate; when the cover 13 is closed, the control button 16 presses down on the control block 117 via the control rod 116, disconnecting it from the circuit, thus disconnecting the overall circuit of the indicator component and preventing waste.

[0043] Further optimization of the design includes a heat dissipation assembly comprising two symmetrical heat dissipation holes 17 extending through both sides of the housing 12, with a cooling fan 18 installed in either heat dissipation hole 17; an isolation mesh 19 is embedded and fixed within the heat dissipation hole 17; and several crisscrossing connecting holes 110 are respectively opened in the side wall of the inner housing 2 and the mounting bracket 3, with each connecting hole 110 communicating with the mounting hole 31. The function of the heat dissipation assembly is to prevent the temperature from becoming too high due to the heat generated by the discharge of the lithium battery 4; the connecting holes 110 create a porous structure between the mounting bracket 3 and the inner housing 2, facilitating heat dissipation; and the isolation mesh 19 is used to isolate external dust and absorb moisture.

[0044] How to use:

[0045] Open the cover 13 and insert the lithium battery 4 into the mounting holes 31 one by one according to the required polarity until the clamping block 36 and the positioning block clamp the lithium battery 4. At the same time, the indicator light 312 corresponding to the mounting hole 31 will light up. After the lithium battery 4 is installed, close the cover 13.

[0046] Install the casing 1 into the location where power is required, and draw the current out through the plug 11.

[0047] During maintenance, open the cover 13 and check the indicator light 312, which is not lit. This indicates that the installation is not in place. Reinstall it.

[0048] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0049] The above embodiments are merely descriptions of preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A mounting bracket for fixing a lithium battery, characterized in that: The device includes an outer shell (1), an inner shell (2) installed in the inner cavity of the outer shell (1), a mounting bracket (3) embedded and fixedly connected in the inner shell (2), and a plurality of mounting components for mounting lithium batteries (4) provided on the mounting bracket (3); a plurality of vibration damping components (111) are fixedly connected between the inner shell (2) and the outer shell (1); The mounting assembly includes a mounting hole (31) opened on the mounting bracket (3), a positioning element is provided at the bottom end of the mounting hole (31), and a clamping element is symmetrically provided at the top end of the side wall of the mounting hole (31). The upper and lower ends of the lithium battery (4) abut against the positioning element and the clamping element respectively. The mounting bracket (3) is internally arranged with a series cable (32), and several of the positioning components are electrically connected through the series cable (32); The outer casing (1) is provided with a plurality of indicator components, which are correspondingly arranged with respect to the lithium battery (4); A heat dissipation assembly is provided on the outer shell (1), and the heat dissipation assembly is in communication with the inner cavity of the outer shell (1); The outer shell (1) includes a shell body (12), and a lid (13) is detachably connected to the top of the shell body (12); a connecting strip (14) is fixedly connected to the top of the shell body (12); The clamping component includes clamping holes (35) symmetrically opened on the side wall of the mounting hole (31), a wedge-shaped clamping block (36) is slidably connected in the clamping hole (35), the clamping block (36) extends out of the clamping hole (35) and is detachably connected to the top end of the lithium battery (4); a clamping spring (37) is fixed between the clamping block (36) and the clamping hole (35); a loosening component is detachably connected to the top end of the clamping block (36), and the loosening component is located in the mounting bracket (3); The loosening component includes a loosening hole (38) formed at the top of the mounting bracket (3), the bottom end of the loosening hole (38) communicating with the tightening hole (35); a loosening rod (39) is slidably connected inside the loosening hole (38), the bottom end of the loosening rod (39) being detachably connected to the wedge-shaped surface of the tightening block (36); the top end of the loosening rod (39) extends out of the loosening hole (38) and is fixedly connected to a loosening button (310), and a loosening spring (311) is fixedly connected between the bottom end of the loosening button (310) and the loosening hole (38); The indicating component includes an indicator light (312), a first control element, and a second control element connected in series. The second control component includes a control hole (115) opened on the connecting strip (14), a control rod (116) slidably connected in the control hole (115), a control block (117) fixedly connected to the bottom end of the control rod (116), and the control block (117) detachably connected in the circuit; a control spring (118) fixedly connected to the bottom end of the control block (117); a control button (16) fixedly connected to the bottom end of the cover (13), the control button (16) being correspondingly set with the control hole (115) and detachably connected to the control rod (116).

2. The mounting bracket for fixing lithium batteries according to claim 1, characterized in that: The positioning component includes a positioning spring (33) fixed to the bottom end of the mounting hole (31), a positioning plate (34) fixed to the top end of the positioning spring (33), and the positioning plate (34) slidably connected to the side wall of the mounting hole (31); one end of the lithium battery (4) abuts against the positioning plate (34); the lithium battery (4) is electrically connected to the series cable (32) through the positioning plate (34) and the positioning spring (33).

3. The mounting bracket for fixing lithium batteries according to claim 1, characterized in that: Several lithium batteries (4) are connected in series via the series cable (32), one end of which extends out of the housing (1) and is electrically connected to a plug (11), which is embedded in the housing (1).

4. The mounting bracket for fixing lithium batteries according to claim 3, characterized in that: The top end of the connecting strip (14) abuts against the outer wall of the box cover (13); a plurality of serial strips (15) are fixedly connected to the bottom end of the box cover (13), and the two ends of the serial strips (15) are electrically connected to the adjacent lithium battery (4).

5. The mounting bracket for fixing a lithium battery according to claim 2, characterized in that: The indicator light (312) is installed on the top of the side wall of the mounting hole (31) and corresponds one-to-one with the lithium battery (4); the first control is installed in the mounting hole (31) and is detachably connected to the positioning plate (34); the second control is installed in the connecting strip (14) and is detachably connected to the box cover (13).

6. The mounting bracket for fixing a lithium battery according to claim 2, characterized in that: The first control component includes a push button switch (313) installed in the mounting hole (31), the push button switch (313) being electrically connected to the indicator light (312) and the second control component; the keycap of the push button switch (313) is detachably connected to the positioning plate (34).

7. The mounting bracket for fixing a lithium battery according to claim 4, characterized in that: The heat dissipation assembly includes two symmetrical heat dissipation holes (17) that penetrate through the two side walls of the shell (12), and a heat dissipation fan (18) is installed in either of the heat dissipation holes (17); an isolation mesh (19) is embedded and fixed in the heat dissipation hole (17); a plurality of crisscrossing connecting holes (110) are respectively opened in the side wall of the inner shell (2) and the mounting bracket (3), and the connecting holes (110) are respectively connected to the mounting holes (31).

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