Electric vehicle charger with rainproof function

Abstract

The invention relates to the technical field of electric vehicle chargers, and particularly discloses an electric vehicle charger with a rainproof function, which comprises a charger body, a rainproof assembly is arranged on the outer side of the charger body, a heat dissipation assembly and a rainproof assembly are arranged in the rainproof assembly, and the rainproof assembly comprises a rainproof seat and a top cover. The charger body is slidably mounted in the rainproof seat, the heat dissipation assembly comprises sealing plates symmetrically and slidably mounted in the rainproof seat, and hollow heat dissipation plates uniformly penetrate through the interior of the charger body; the hollow heat dissipation base penetrates through the charger body, heat in the body can be guided out, the charger body can be installed between the two sealing plates, the sealing plates can be installed between the rainproof base and the top cover subsequently, overall sealing of the charger body is achieved, and meanwhile it is ensured that the heat dissipation mechanisms on the sealing plates can discharge heat from the rainproof assembly. Normal operation of the charger is ensured, and the rainproof effect and the use safety are improved through sealing and water prevention.

Description

Technical Field

[0001] The invention relates to the technical field of electric vehicle chargers, and in particular to an electric vehicle charger with a rainproof function. Background Art

[0002] An electric vehicle charger is a device that converts alternating current into direct current and provides suitable charging voltage and current for electric vehicle batteries. It is mainly composed of a power input circuit, a power conversion circuit, a charging control circuit, a charging display circuit and other parts. When connected to the AC power, the power input circuit will filter the AC power, and the power conversion circuit will convert the AC power into direct current suitable for battery charging. The charging control circuit will adjust the charging parameters in real time according to the battery charging status to ensure that the battery can be charged safely and quickly.

[0003] When the electric vehicle charger is working, the internal electronic components such as transformers, power tubes, rectifier diodes, etc. will generate heat. If this heat cannot be dissipated in time, the internal temperature of the charger will rise. Excessive temperature will cause the performance of the electronic components to decline and shorten their lifespan. It may even cause thermal runaway and damage to the charger. In severe cases, it may also cause safety accidents. In order to ensure the normal operation and service life of the charger, good heat dissipation measures must be taken.

[0004] Current chargers mainly rely on the heat dissipation holes on the outer shell to achieve natural heat dissipation. These heat dissipation holes connect the inside of the charger with the outside air so that heat can be dissipated. However, on rainy days, rainwater can easily enter the charger through these heat dissipation holes, causing the circuit board to become damp, which in turn causes problems such as short circuits and leakage.

[0005] Therefore, it is necessary to provide an electric vehicle charger with rainproof function to solve the above problems. Summary of the invention

[0006] The main purpose of the present invention is to provide an electric vehicle charger with rainproof function, which can effectively solve the problems in the background technology.

[0007] To achieve the above object, the technical solution adopted by the present invention is:

[0008] A charger for an electric vehicle with a rainproof function comprises a charger body, a rainproof assembly is arranged on the outside of the charger body, a heat dissipation assembly and a rain shield assembly are arranged inside the rainproof assembly, the rainproof assembly comprises a rainproof seat and a top cover, the charger body is slidably installed inside the rainproof seat, the heat dissipation assembly comprises a sealing plate symmetrically slidably installed inside the rainproof seat, a hollow heat dissipation seat is uniformly penetrated inside the charger body, two ends of the heat dissipation seat are respectively slidably connected to the inside of two sealing plates, heat dissipation mechanisms are respectively arranged on the two sealing plates, the top cover is installed on the top of the rainproof seat through a connecting mechanism, the rain shield assembly comprises a baffle group and a baffle group symmetrically fixedly connected to the charger body, the two baffle groups are located between the two baffle groups, and a gap is formed between the baffle group and the baffle group, and a guide seat is symmetrically fixedly connected to the outside of the baffle group.

[0009] As a further improvement of the above scheme, the outer side of the heat sink is slidably connected with a fixed sleeve, the outer side of the charger body is fixedly connected with a fixed plate, the internal thread of the fixed plate is installed with a threaded rod, the fixed sleeve is fixedly connected to the outer side wall of the charger body, the interior of the fixed sleeve is slidably connected with a positioning block and a connecting rod, a movable plate is arranged between the fixed plate and the fixed sleeve, a spring 1 is fixedly connected between the movable plate and the positioning block, and a spring 2 is fixedly connected between the positioning block and the inner wall of the fixed sleeve.

[0010] As a further improvement of the above solution, a spring 1 is fixedly connected between the fixed sleeve and the movable plate, and the top of the connecting rod passes through the spring 1.

[0011] As a further improvement of the above solution, a mounting sleeve is slidably connected to the outer side of the heat sink, and a hexagon socket bolt is installed on the internal thread of the mounting sleeve, and the mounting sleeve is slidably connected to the inside of the sealing plate.

[0012] As a further improvement of the above scheme, the connecting mechanism includes a connecting seat fixedly connected to the four corners of the rainproof seat, a connecting sleeve fixedly connected to the four corners of the bottom of the top cover, a movable rod rotatably connected to the inside of the connecting sleeve, the top of the movable rod is rotatably connected to the inside of the top cover, a clamping block is fixedly connected to the bottom of the movable rod, and a clamping block is fixedly connected to the bottom of the clamping block, and a clamping groove is provided inside the connecting seat to facilitate the rotation of the clamping block to complete the connection.

[0013] As a further improvement of the above scheme, the outer side of the movable rod is symmetrically fixedly connected to a limiting strip, the inner wall of the connecting sleeve is provided with a limiting groove, the limiting strip is rotatably connected in the limiting groove, and the interior of the rainproof seat is fixedly connected to two sealing sleeves.

[0014] As a further improvement of the above solution, an annular groove is provided on the outer surface of the sealing plate, and a sealing strip is fixedly mounted on the sealing plate through the annular groove.

[0015] As a further improvement of the above scheme, a card slot is opened inside the rainproof seat, and the sealing plate is slidably connected to the inside of the rainproof seat through the card slot. A positioning slot is opened at the bottom of the top cover, and the top of the sealing plate is slidably connected to the bottom of the top cover through the positioning slot.

[0016] As a further improvement of the above scheme, the heat dissipation mechanism includes an installation shaft symmetrically connected to the inside of the sealing plate, and the outer sides of the two installation shafts are fixedly connected to a fan blade and a driven wheel. The outer side of the sealing plate is fixedly installed with a motor, and the output shaft of the motor passes through the sealing plate and is fixedly connected to a driving wheel. A spiral pair transmission is formed between the driving wheel and the two driven wheels through a driving belt.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The hollow heat sink is passed through the charger body, which can not only dissipate the internal heat of the charger body, but also realize the installation of the charger body between the two sealing plates, so as to facilitate the subsequent installation of the sealing plate between the rainproof seat and the top cover to achieve the overall sealing of the charger body. At the same time, it ensures that the heat dissipation mechanism on the sealing plate can discharge the heat from the rainproof component to ensure the normal operation of the charger. It can also improve the rainproof effect and safety of use through sealing and waterproofing.

[0019] 2. Install the rain shield assembly inside the rain shield seat. The rain shield seat and the top cover together seal and protect the charger body. The gap between the baffle group and the baffle group is conducive to the heat discharge between the rain shield seat and the top cover, and can reduce the intrusion of rainwater, and the rainwater blocked by the baffle group is discharged through the guide seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the overall structure of the rainproof seat of the present invention;

[0023] Figure 3 It is a schematic diagram of the internal structure of the rainproof seat of the present invention;

[0024] Figure 4 It is a structural schematic diagram of the sealing plate of the present invention;

[0025] Figure 5 It is a structural schematic diagram of the charger body of the present invention;

[0026] Figure 6 It is a schematic diagram of the installation structure of the heat sink of the present invention;

[0027] Figure 7 For the present invention Figure 6 The structural diagram at A in the middle;

[0028] Figure 8 It is a schematic diagram of the bottom structure of the top cover of the present invention;

[0029] Fig. 9 It is a schematic diagram of the internal structure of the connecting sleeve of the present invention;

[0030] Fig.10 It is a schematic diagram of the top structure of the connecting sleeve of the present invention;

[0031] Fig.11 It is a structural schematic diagram of the heat dissipation mechanism of the present invention;

[0032] Fig.12 It is a schematic structural diagram of the rain shield assembly of the present invention.

[0033] In the figure: 1. charger body; 2. rainproof assembly; 21. rainproof seat; 22. top cover; 23. connecting mechanism; 231. connecting seat; 232. connecting sleeve; 233. movable rod; 234. clamping block; 235. limiting strip; 24. sealing sleeve; 3. heat dissipation assembly; 31. sealing plate; 32. heat dissipation seat; 33. heat dissipation mechanism; 331. fan blade; 332. driving wheel; 333. driving belt; 334. driven wheel; 335. mounting shaft; 336. motor; 34. sealing strip; 351. mounting sleeve; 352. hexagon socket bolt; 361. fixing sleeve; 362. fixing plate; 363. threaded rod; 364. movable plate; 365. spring one; 366. positioning block; 367. connecting rod; 368. spring two; 4. rainproof assembly; 41. baffle group; 42. baffle group; 43. guide seat. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] See also Figures 1 to 12As shown, the present invention provides an embodiment:

[0036] A rainproof electric vehicle charger comprises a charger body 1, a rainproof assembly 2 is arranged on the outer side of the charger body 1, a heat dissipation assembly 3 and a rain shield assembly 4 are arranged inside the rainproof assembly 2, the rainproof assembly 2 comprises a rainproof seat 21 and a top cover 22, the charger body 1 is slidably installed inside the rainproof seat 21, the heat dissipation assembly 3 comprises a sealing plate 31 symmetrically slidably installed inside the rainproof seat 21, a hollow heat dissipation seat 32 is uniformly penetrated inside the charger body 1, two ends of the heat dissipation seat 32 are respectively slidably connected to the inside of two sealing plates 31, heat dissipation mechanisms 33 are respectively arranged on the two sealing plates 31, the top cover 22 is installed on the top of the rainproof seat 21 through a connecting mechanism 23, the rain shield assembly 4 comprises a baffle group 41 and a baffle group 42 symmetrically fixedly connected to the charger body 1, the two baffle groups 42 are located between the two baffle groups 41, and a gap is formed between the baffle group 41 and the baffle group 42, and a guide seat 43 is symmetrically fixedly connected to the outer side of the baffle group 42.

[0037] In practical application, the embodiment of the present invention is as follows: Figure 1 , Figure 3 and Figure 4 When the charger body 1 generates heat during operation, the heat will be conducted to the hollow heat sink 32. Since the heat sink 32 passes through the charger body 1 and both ends are slidably connected to the sealing plate 31, the heat will be transferred to the sealing plate 31 through the heat sink 32. Subsequently, the heat dissipation mechanism 33 on the sealing plate 31 is activated to further dissipate the heat, thereby achieving heat dissipation of the charger body 1.

[0038] In terms of rain protection, Figure 2 , Figure 3 and Fig.12 As shown, the rainproof seat 21 and the top cover 22 are installed through a connecting mechanism 23 to jointly seal and protect the charger body 1. When rainwater invades, the rainproof component 4 comes into play, and the rainwater first contacts the baffle group 41. Part of the rainwater will slide down the baffle group 41, while the rainwater that has not slid down continues to seep into the gap between the baffle group 41 and the baffle group 42. Due to the gap design, while allowing heat to be discharged from between the rainproof seat 21 and the top cover 22, the possibility of rainwater entering the charger body 1 can be reduced. Even if a small amount of rainwater passes through the gap to reach the baffle group 42, the baffle group 42 will block the rainwater from further infiltrating, and through the guide seat 43 symmetrically fixedly connected to its outer side, the rainwater blocked by the baffle group 42 is smoothly discharged, thereby fully ensuring that the charger body 1 can perform normal heat dissipation while protecting against rain.

[0039] like Figures 3 to 7As shown, the outer side of the heat sink 32 is slidably connected with a fixed sleeve 361, the outer side of the charger body 1 is fixedly connected with a fixed plate 362, the internal thread of the fixed plate 362 is installed with a threaded rod 363, the fixed sleeve 361 is fixedly connected to the outer side wall of the charger body 1, the interior of the fixed sleeve 361 is slidably connected with a positioning block 366 and a connecting rod 367, a movable plate 364 is arranged between the fixed plate 362 and the fixed sleeve 361, a spring 1 365 is fixedly connected between the movable plate 364 and the positioning block 366, a spring 2 368 is fixedly connected between the positioning block 366 and the inner wall of the fixed sleeve 361, a spring 1 365 is fixedly connected between the fixed sleeve 361 and the movable plate 364, and the top of the connecting rod 367 passes through the spring 1 365.

[0040] In actual application of the embodiment of the present invention, when the heat sink 32 passes through the charger body 1, its two ends are respectively located in the fixing sleeves 361 at the two ends. At this time, the fixing sleeve 361 pushes the positioning block 366 downward through the elastic force of the spring 2 368 to achieve preliminary fixation of the heat sink 32, so that after multiple heat sinks 32 pass through the charger body 1, the threaded rod 363 is rotated to move the threaded rod 363 downward to achieve support on the top of the movable plate 364, and the movable plate 364 is squeezed to drive the positioning block 366 through the connecting rod 367 to achieve fixation of the heat sink 32, thereby ensuring the convenience of installation of the heat sink 32 in the charger body 1.

[0041] like Figures 3 to 6 As shown, the outer side of the heat sink 32 is also slidably connected with a mounting sleeve 351 , the internal thread of the mounting sleeve 351 is installed with a hexagon socket bolt 352 , and the mounting sleeve 351 is slidably connected to the inside of the sealing plate 31 .

[0042] In actual application of the embodiment of the present invention, after the heat sink 32 is installed, the heat sink 32 is passed through the sealing plate 31 and the mounting sleeve 351 is installed on one end of the heat sink 32 through the hexagon socket bolt 352, and then the sealing plate 31 is moved to realize the clamping of the mounting sleeve 351, and the installation of the charger body 1 between the two sealing plates 31 is completed, so that the charger body 1 can be installed between the rainproof seat 21 and the top cover 22 through the sealing plate 31, and the sealing performance is ensured.

[0043] like Figure 1 , Figure 3 , Figure 8 , Fig. 9 and Fig.10As shown, the connecting mechanism 23 includes a connecting seat 231 fixedly connected to the four corners of the inside of the rainproof seat 21, a connecting sleeve 232 fixedly connected to the four corners of the bottom of the top cover 22, a movable rod 233 is rotatably connected to the inside of the connecting sleeve 232, the top of the movable rod 233 is rotatably connected to the inside of the top cover 22, a clamping block 234 is fixedly connected to the bottom of the movable rod 233, and the bottom of the clamping block 234 is fixedly connected to the clamping block 234, a clamping groove is provided inside the connecting seat 231 for facilitating the rotation of the clamping block 234 to complete the connection, a limiting strip 235 is symmetrically fixedly connected to the outer side of the movable rod 233, a limiting groove is provided on the inner wall of the connecting sleeve 232, the limiting strip 235 is rotatably connected to the limiting groove, and two sealing sleeves 24 are fixedly connected to the inside of the rainproof seat 21.

[0044] In actual application of the embodiment of the present invention, when the charger body 1 is inserted into the rainproof seat 21 through the sealing plate 31, the top cover 22 is aligned with the rainproof seat 21 so that the connecting seat 231 and the connecting sleeve 232 are aligned. At this time, the movable rod 233 is rotated so that the movable rod 233 rotates ninety degrees under the limit of the limit bar 235, and drives the block 234 fixedly connected to the bottom to rotate ninety degrees, thereby realizing the fixed connection between the connecting sleeve 232 and the connecting seat 231, and ensuring that the top cover 22 is conveniently and stably installed on the top of the rainproof seat 21.

[0045] like Fig.11 As shown, an annular groove is formed on the outer surface of the sealing plate 31, and a sealing strip 34 is fixedly mounted on the sealing plate 31 through the annular groove.

[0046] In actual application of the embodiment of the present invention, the sealing strip 34 is installed in the annular groove on the outer side of the sealing plate 31, so that after the sealing plate 31 is installed between the rainproof seat 21 and the top cover 22, the sealing strip 34 is used to ensure the sealing between the sealing plate 31, the rainproof seat 21 and the top cover 22, thereby ensuring the sealing of the installation of the charger body 1.

[0047] like Figure 1 , Figure 3 and Figure 8 As shown, a card slot is opened inside the rainproof seat 21, and the sealing plate 31 is slidably connected to the inside of the rainproof seat 21 through the card slot. A positioning slot is opened at the bottom of the top cover 22, and the top of the sealing plate 31 is slidably connected to the bottom of the top cover 22 through the positioning slot.

[0048] In actual application, the sealing plate 31 can be stably installed in the rainproof seat 21 through the clamping groove and the positioning groove, and the top is clamped with the top cover 22 to ensure the firmness and sealing of the installation.

[0049] like Figure 3 , Figure 4 and Fig.11As shown, the heat dissipation mechanism 33 includes a mounting shaft 335 symmetrically connected to the inside of the sealing plate 31, and the outer sides of the two mounting shafts 335 are fixedly connected with a fan blade 331 and a driven wheel 334. The outer side of the sealing plate 31 is fixedly installed with a motor 336. The output shaft of the motor 336 passes through the sealing plate 31 and is fixedly connected with a driving wheel 332. A driving belt 333 is used to form a spiral pair transmission between the driving wheel 332 and the two driven wheels 334.

[0050] In actual application of the embodiment of the present invention, when it is necessary to dissipate heat for the charger body 1, the motor 336 fixedly mounted on the outer side of the sealing plate 31 is started, and the output shaft of the motor 336 rotates, driving the fixedly connected driving wheel 332 to rotate synchronously. Since a spiral pair transmission is formed between the driving wheel 332 and the two driven wheels 334 through the driving belt 333, the rotation of the driving wheel 332 is transmitted to the driven wheel 334 through the driving belt 333, so that the driven wheel 334 rotates accordingly. Since the driven wheel 334 is fixedly connected to the outer side of the mounting shaft 335, and the mounting shaft 335 is symmetrically rotationally connected to the inside of the sealing plate 31, the rotation of the driven wheel 334 will drive the mounting shaft 335 to rotate together, and the outer side of the mounting shaft 335 is also fixedly connected with a fan blade 331. As the mounting shaft 335 rotates, the fan blade 331 rotates at a high speed, generating a strong airflow, accelerating the dissipation of heat, and quickly dissipating the heat transferred from the charger body 1 to the sealing plate 31 through the heat sink 32, thereby achieving efficient heat dissipation of the charger body 1 and ensuring its stable operation at an appropriate temperature.

[0051] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0052] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An electric vehicle charger with rainproof function, comprising a charger body (1), characterized in that: The outer side of the charger body (1) is provided with a rainproof component (2), the interior of the rainproof component (2) is provided with a heat dissipation component (3) and a rain shield component (4), the rainproof component (2) comprises a rainproof seat (21) and a top cover (22), the charger body (1) is slidably mounted inside the rainproof seat (21), the heat dissipation component (3) comprises a sealing plate (31) symmetrically slidably mounted inside the rainproof seat (21), the interior of the charger body (1) is uniformly penetrated by a hollow heat dissipation seat (32), and the two ends of the heat dissipation seat (32) are respectively slidably connected to two The two sealing plates (31) are respectively provided with heat dissipation mechanisms (33); the top cover (22) is installed on the top of the rainproof seat (21) through a connecting mechanism (23); the rainproof assembly (4) comprises a baffle group (41) and a baffle group (42) symmetrically fixedly connected to the charger body (1); the two baffle groups (42) are located between the two baffle groups (41), and a gap is formed between the baffle group (41) and the baffle group (42); and the outer side of the baffle group (42) is symmetrically fixedly connected with a guide seat (43).

2. The electric vehicle charger with rainproof function according to claim 1, characterized in that: The outer side of the heat sink (32) is slidably connected to a fixing sleeve (361), the outer side of the charger body (1) is fixedly connected to a fixing plate (362), the inner thread of the fixing plate (362) is provided with a threaded rod (363), the fixing sleeve (361) is fixedly connected to the outer side wall of the charger body (1), the inner side of the fixing sleeve (361) is slidably connected to a positioning block (366) and a connecting rod (367), a movable plate (364) is provided between the fixing plate (362) and the fixing sleeve (361), a spring 1 (365) is fixedly connected between the movable plate (364) and the positioning block (366), and a spring 2 (368) is fixedly connected between the positioning block (366) and the inner wall of the fixing sleeve (361).

3. The electric vehicle charger with rainproof function according to claim 2, characterized in that: A spring 1 (365) is fixedly connected between the fixed sleeve (361) and the movable plate (364), and the top of the connecting rod (367) passes through the spring 1 (365).

4. The electric vehicle charger with rainproof function according to claim 2, characterized in that: The outer side of the heat sink (32) is also slidably connected to a mounting sleeve (351), the internal threads of the mounting sleeve (351) are threadedly mounted with hexagon socket bolts (352), and the mounting sleeve (351) is slidably connected to the inside of the sealing plate (31).

5. The electric vehicle charger with rainproof function according to claim 2, characterized in that: The connecting mechanism (23) comprises a connecting seat (231) fixedly connected to the four corners of the interior of the rainproof seat (21); a connecting sleeve (232) fixedly connected to the four corners of the bottom of the top cover (22); a movable rod (233) rotatably connected to the interior of the connecting sleeve (232); the top of the movable rod (233) rotatably connected to the interior of the top cover (22); a clamping block (234) fixedly connected to the bottom of the movable rod (233); the bottom of the clamping block (234) fixedly connected to the clamping block (234); and a clamping groove is provided inside the connecting seat (231) to facilitate the clamping block (234) to rotate and complete the connection.

6. The electric vehicle charger with rainproof function according to claim 5, characterized in that: The outer side of the movable rod (233) is symmetrically fixedly connected to a limit strip (235), the inner wall of the connecting sleeve (232) is provided with a limit slot, the limit strip (235) is rotatably connected in the limit slot, and the interior of the rainproof seat (21) is fixedly connected to two sealing sleeves (24).

7. The electric vehicle charger with rainproof function according to claim 3, characterized in that: An annular groove is formed on the outer surface of the sealing plate (31), and a sealing strip (34) is fixedly mounted on the sealing plate (31) through the annular groove.

8. The electric vehicle charger with rainproof function according to claim 3, characterized in that: A slot is provided inside the rainproof seat (21), and the sealing plate (31) is slidably connected to the inside of the rainproof seat (21) via the slot. A positioning slot is provided at the bottom of the top cover (22), and the top of the sealing plate (31) is slidably connected to the bottom of the top cover (22) via the positioning slot.

9. The electric vehicle charger with rainproof function according to claim 1, characterized in that: The heat dissipation mechanism (33) comprises a mounting shaft (335) symmetrically rotatably connected to the inside of the sealing plate (31); the outer sides of the two mounting shafts (335) are fixedly connected to a fan blade (331) and a driven wheel (334); a motor (336) is fixedly mounted on the outer side of the sealing plate (31); the output shaft of the motor (336) passes through the sealing plate (31) and is fixedly connected to a driving wheel (332); a driving belt (333) is used to form a spiral pair transmission between the driving wheel (332) and the two driven wheels (334).

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