阅读说明：本技术 一种可以自动连接的电动汽车充电设备 (Electric automobile battery charging outfit that can connect automatically ) 是由 王玉珍 于 2020-06-24 设计创作，主要内容包括：本发明公开了一种可以自动连接的电动汽车充电设备,包括充电桩,所述充电桩右侧设有连接机构,所述连接机构包括连接块,所述连接块内设有连接腔,所述连接腔内关于充电头对称固定设有两个弹簧,所述弹簧上固定设有充电连接块,所述充电连接块内设有控制腔,所述控制腔右侧内壁固定设第一滑轨,所述第一滑轨上滑动设有第一滑块,本发明可以使充电桩的充电插头自动的连接新能源汽车的充电头,免去可人工连接充电插头的不便,而且新能源汽车冲完电或者充电异常时之后,充电插头可以自动的断开与新能源汽车的连接并收回充电桩,防止兴能源汽车过度充电引发自燃。(The invention discloses an electric automobile charging device capable of being automatically connected, which comprises a charging pile, wherein a connecting mechanism is arranged on the right side of the charging pile, the connecting mechanism comprises a connecting block, a connecting cavity is arranged in the connecting block, two springs are symmetrically and fixedly arranged in the connecting cavity relative to the charging head, a charging connecting block is fixedly arranged on the spring, a control cavity is arranged in the charging connecting block, a first slide rail is fixedly arranged on the inner wall of the right side of the control cavity, the first slide block is arranged on the first slide rail in a sliding manner, so that the charging plug of the charging pile can be automatically connected with the charging head of the new energy automobile, the inconvenience of manual connection of the charging plug is avoided, and after the new energy automobile is charged or when charging is abnormal, the charging plug can be automatically disconnected from the new energy automobile and can be withdrawn from the charging pile, and spontaneous combustion caused by overcharge of the new energy automobile is prevented.)

1. The utility model provides an electric automobile battery charging outfit that can connect automatically, is including filling electric pile, its characterized in that: the right side of the charging pile is provided with a connecting mechanism, the connecting mechanism comprises a connecting block, a connecting cavity is arranged in the connecting block, two springs are symmetrically and fixedly arranged in the connecting cavity about a charging head, the springs are fixedly provided with charging connecting blocks, the charging connecting blocks are internally provided with control cavities, the right inner wall of each control cavity is fixedly provided with a first slide rail, each first slide rail is provided with a first slide block in a sliding manner, the left end surface of each first slide block is fixedly provided with a first gear, the right inner wall of each control cavity is fixedly provided with a first motor, the first motor is arranged on the upper side of the corresponding first slide rail and controls the rotation of a first motor shaft, the left end of each first motor shaft is fixedly provided with a second gear, five fixing block shafts are rotatably arranged between the left inner wall and the right inner wall of each control cavity by taking the charging head as a center, the fixed block bracket is connected with the first gear in a meshing manner, a fixed block is fixedly arranged on the fixed block bracket close to the charging head end, the first motor is started to drive the first motor shaft to rotate, the second gear is driven to rotate through the fixed connection of the first motor shaft and the second gear, the first gear is driven to rotate through the meshing connection of the second gear and the first gear, the fixed block bracket is driven to rotate through the meshing connection of the first gear and the fixed block bracket, and the fixed block is driven to rotate through the fixed connection of the fixed block bracket and the fixed block; a control mechanism is arranged on the left side of the connecting block and comprises a control block, a control cavity is arranged in the control block, a second motor is fixedly arranged on the inner wall of the upper side of the control cavity and controls the rotation of a second motor shaft, a first helical gear is fixedly arranged at the lower end of the second motor shaft, a second slide rail is fixedly arranged on the inner wall of the upper side and the lower side of the control cavity, a second slide block is arranged on the second slide rail in a sliding manner, a first threaded rod is fixedly arranged on the second slide block, a second threaded rod is arranged in the first threaded rod in a threaded connection manner, a second threaded rod fixing block is fixedly arranged on the inner wall of the lower side of the control cavity, the second threaded rod fixing block is connected with the second threaded rod in a sliding manner, a second helical gear is fixedly arranged at the left end of the second; the control block downside is equipped with moving mechanism, moving mechanism includes the mobile station, be equipped with the third motor chamber in the mobile station, the fixed third motor that is equipped with of third motor chamber rear side inner wall, third motor control third motor shaft rotates, the fixed third helical gear that is equipped with in third motor shaft rear end, it is equipped with the turning block to rotate on the third motor shaft, the turning block upper end is rotated and is equipped with the third threaded rod, the fixed fourth helical gear that is equipped with on the third threaded rod, the fourth helical gear with the third helical gear passes through the meshing and is connected, the fixed first support that is equipped with of control block left end face, first support upper end is rotated and is equipped with third threaded rod support, third threaded rod support with the third threaded rod passes through threaded connection.

2. The automatically connectable electric vehicle charging apparatus according to claim 1, wherein: the connecting mechanism further comprises a charging cavity, the charging cavity is arranged in the charging connecting block, a fourth motor is fixedly arranged on the inner wall of the right side of the charging cavity, a fourth motor controls the rotation of a fourth motor shaft, a third sliding rail is arranged on the inner wall of the left side and the right side of the fourth motor in a rotating mode, a third sliding block is arranged on the third sliding rail in a sliding mode, the third sliding block is connected with the fourth motor shaft through threads, and a charging head is fixedly arranged at the right end of the third sliding block.

3. The automatically connectable electric vehicle charging apparatus according to claim 1, wherein: control mechanism still includes the electric wire chamber, the electric wire chamber is in fill electric pile, the side inner wall rotates around the electric wire chamber and is equipped with the wire winding shaft, the epaxial reel that is fixed of wire winding shaft, the epaxial two second springs that are fixed to be equipped with of wire winding shaft around the reel side symmetry, charge the head with the reel passes through the connection of electric lines.

4. The automatically connectable electric vehicle charging apparatus according to claim 1, wherein: the control mechanism further comprises a fifth motor cavity with a right opening, the fifth motor cavity is arranged in the charging pile, a fourth slide rail is fixedly arranged on the inner wall of the left side of the fifth motor cavity, a fourth slide block is arranged on the fourth slide rail in a sliding manner, a fifth motor is fixedly arranged on the inner wall of the left side of the fifth motor cavity, the fifth motor is arranged on the lower side of the fourth slide rail and controls the rotation of a fifth motor shaft, the fifth motor shaft is connected with the fourth slide block through threads, a second bracket is fixedly arranged on the inner wall of the left side of the fifth motor cavity, a telescopic bracket is jointly rotatably arranged on the second bracket and the fourth slide block, two third brackets are fixedly arranged at the left end of the telescopic rod, the third brackets are rotatably connected with the telescopic bracket, a sixth motor cavity is arranged in the telescopic rod, and a sixth motor is fixedly arranged on the inner wall of the lower side of the sixth motor cavity, the sixth motor controls a sixth motor shaft to rotate, a telescopic ejector rod is arranged in the telescopic rod in a sliding mode and is in threaded connection with the sixth motor shaft, the upper end of the telescopic ejector rod is fixedly connected with the moving platform, a fourth support is fixedly arranged on the upper end face of the moving platform, a fifth support is fixedly arranged on the lower end face of the control block, and the fifth support is connected with the fourth support in a rotating mode.

Technical Field

The invention relates to the field of new energy automobiles, in particular to an electric automobile charging device capable of being automatically connected.

Background

The new energy automobile adopts unconventional automobile fuel as a power source, most of the new energy automobiles are batteries, advanced technologies in the aspects of power control and driving of the automobile are integrated, the formed technical principle is advanced, the new technology and the new structure are provided, most of the new energy automobiles are batteries, and spontaneous combustion is possible to occur in the charging process of the new energy automobiles.

Disclosure of Invention

The invention aims to solve the problem of providing an electric automobile charging device capable of being automatically connected, and solving the problems of spontaneous combustion and the like during charging of the existing new energy automobile.

The invention is realized by the following technical scheme.

The invention relates to an electric automobile charging device capable of being automatically connected, which comprises a charging pile, wherein a connecting mechanism is arranged on the right side of the charging pile, the connecting mechanism comprises a connecting block, a connecting cavity is arranged in the connecting block, two springs are symmetrically and fixedly arranged in the connecting cavity about a charging head, the charging connecting block is fixedly arranged on each spring, a control cavity is arranged in each charging connecting block, a first slide rail is fixedly arranged on the inner wall of the right side of each control cavity, a first slide block is slidably arranged on each first slide rail, a first gear is fixedly arranged on the left end surface of each first slide block, a first motor is fixedly arranged on the inner wall of the right side of each control cavity, the first motor is arranged on the upper side of each first slide rail and controls the rotation of a first motor shaft, a second gear is fixedly arranged on the left end surface of each first motor shaft, five fixed block shafts are rotatably arranged between, a fixed block support is fixedly arranged on the fixed block shaft, the fixed block support is connected with the first gear in a meshing manner, a fixed block is fixedly arranged on the fixed block support close to the charging head end, the first motor is started to drive the first motor shaft to rotate, the second gear is driven to rotate through the fixed connection of the first motor shaft and the second gear, the first gear is driven to rotate through the meshing connection of the second gear and the first gear, the fixed block support is driven to rotate through the meshing connection of the first gear and the fixed block support, and the fixed block is driven to rotate through the fixed connection of the fixed block support and the fixed block; a control mechanism is arranged on the left side of the connecting block and comprises a control block, a control cavity is arranged in the control block, a second motor is fixedly arranged on the inner wall of the upper side of the control cavity and controls the rotation of a second motor shaft, a first helical gear is fixedly arranged at the lower end of the second motor shaft, a second slide rail is fixedly arranged on the inner wall of the upper side and the lower side of the control cavity, a second slide block is arranged on the second slide rail in a sliding manner, a first threaded rod is fixedly arranged on the second slide block, a second threaded rod is arranged in the first threaded rod in a threaded connection manner, a second threaded rod fixing block is fixedly arranged on the inner wall of the lower side of the control cavity, the second threaded rod fixing block is connected with the second threaded rod in a sliding manner, a second helical gear is fixedly arranged at the left end of the second; the control block downside is equipped with moving mechanism, moving mechanism includes the mobile station, be equipped with the third motor chamber in the mobile station, the fixed third motor that is equipped with of third motor chamber rear side inner wall, third motor control third motor shaft rotates, the fixed third helical gear that is equipped with in third motor shaft rear end, it is equipped with the turning block to rotate on the third motor shaft, the turning block upper end is rotated and is equipped with the third threaded rod, the fixed fourth helical gear that is equipped with on the third threaded rod, the fourth helical gear with the third helical gear passes through the meshing and is connected, the fixed first support that is equipped with of control block left end face, first support upper end is rotated and is equipped with third threaded rod support, third threaded rod support with the third threaded rod passes through threaded connection.

Preferably, coupling mechanism still includes the chamber of charging, the chamber of charging is in the connection of charging piece, the fixed fourth motor that is equipped with of chamber right side inner wall charges, fourth motor control fourth motor shaft rotates, the rotation of the inner wall of the side of the left and right sides of fourth motor is equipped with the third slide rail, it is equipped with the third slider to slide on the third slide rail, the third slider with the fourth motor shaft passes through threaded connection, the fixed head that charges that is equipped with of third slider right-hand member.

Preferably, control mechanism still includes the electric wire chamber, the electric wire chamber is in fill electric pile, the side inner wall rotates around the electric wire chamber and is equipped with the wire winding shaft, the epaxial reel that is fixed of wire winding shaft, the epaxial two second springs that are fixed with of wire winding shaft around the reel front and back side symmetry, charge the head with the reel passes through the connection of electric lines.

Preferably, the control mechanism further comprises a fifth motor cavity with a right opening, the fifth motor cavity is arranged in the charging pile, a fourth slide rail is fixedly arranged on the inner wall of the left side of the fifth motor cavity, a fourth slide block is slidably arranged on the fourth slide rail, a fifth motor is fixedly arranged on the inner wall of the left side of the fifth motor cavity, the fifth motor is arranged on the lower side of the fourth slide rail and controls the rotation of a fifth motor shaft, the fifth motor shaft is connected with the fourth slide block through threads, a second bracket is fixedly arranged on the inner wall of the left side of the fifth motor cavity, a telescopic bracket is rotatably arranged on the second bracket and the fourth slide block together, two third brackets are fixedly arranged on the left end of the telescopic rod, the third brackets are rotatably connected with the telescopic bracket, a sixth motor cavity is arranged in the telescopic rod, and a sixth motor is fixedly arranged on the inner wall of the lower side of the sixth motor cavity, the sixth motor controls a sixth motor shaft to rotate, a telescopic ejector rod is arranged in the telescopic rod in a sliding mode and is in threaded connection with the sixth motor shaft, the upper end of the telescopic ejector rod is fixedly connected with the moving platform, a fourth support is fixedly arranged on the upper end face of the moving platform, a fifth support is fixedly arranged on the lower end face of the control block, and the fifth support is connected with the fourth support in a rotating mode.

The invention has the beneficial effects that: according to the invention, the charging plug of the charging pile can be automatically connected with the charging head of the new energy automobile, the inconvenience that the charging plug can be manually connected is avoided, and after the new energy automobile is charged or the charging is abnormal, the charging plug can be automatically disconnected from the new energy automobile and can be withdrawn into the charging pile, so that spontaneous combustion caused by overcharging of the new energy automobile is prevented.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is an enlarged schematic view of the embodiment of the present invention at A in FIG. 1;

FIG. 3 is an enlarged schematic view of the embodiment of the present invention at B in FIG. 1;

FIG. 4 is a schematic view of the embodiment of the present invention in the direction of C-C in FIG. 2;

FIG. 5 is a schematic view of the embodiment of the present invention in the direction D-D in FIG. 1;

FIG. 6 is a schematic view of the embodiment of the present invention in the direction E-E of FIG. 3.

Detailed Description

The invention will now be described in detail with reference to fig. 1-6, wherein for ease of description the orientations described hereinafter are now defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.

The automatic connection electric vehicle charging equipment described in conjunction with fig. 1-6 comprises a charging pile 10, a connecting mechanism 80 is arranged on the right side of the charging pile 10, the connecting mechanism 80 comprises a connecting block 49, a connecting cavity 50 is arranged in the connecting block 49, two springs 51 are symmetrically and fixedly arranged in the connecting cavity 50 with respect to a charging head 69, a charging connecting block 52 is fixedly arranged on each spring 51, a control cavity 70 is arranged in the charging connecting block 52, a first slide rail 63 is fixedly arranged on the inner wall of the right side of the control cavity 70, a first slide block 62 is slidably arranged on the first slide rail 63, a first gear 61 is fixedly arranged on the left end face of the first slide block 62, a first motor 68 is fixedly arranged on the inner wall of the right side of the control cavity 70, the first motor 68 is arranged on the upper side of the first slide rail 63, the first motor 68 controls the rotation of a first motor shaft 65, a second gear 64 is fixedly arranged on the left end of the first, five fixed block shafts 60 are rotatably arranged between the inner walls of the left side and the right side of the control cavity 70 by taking the charging head 69 as a center, a fixed block bracket 59 is fixedly arranged on the fixed block shafts 60, the fixed block bracket 59 is connected with the first gear 61 in a meshing manner, a fixed block 58 is fixedly arranged on the fixed block bracket 59 close to the charging head 69, the first motor 68 is started to drive the first motor shaft 65 to rotate, the second gear 64 is driven to rotate through the fixed connection of the first motor shaft 65 and the second gear 64, the first gear 61 is driven to rotate through the meshing connection of the second gear 64 and the first gear 61, the fixed block bracket 59 is driven to rotate through the meshing connection of the first gear 61 and the fixed block bracket 59, and the fixed block bracket 59 is fixedly connected with the fixed block 58, driving the fixed block 58 to rotate; a control mechanism 81 is arranged at the left side of the connecting block 49, the control mechanism 81 comprises a control block 71, a control cavity 40 is arranged in the control block 71, a second motor 41 is fixedly arranged on the inner wall of the upper side of the control cavity 40, the second motor 41 controls the second motor shaft 42 to rotate, the lower end of the second motor shaft 42 is fixedly provided with a first bevel gear 43, a second slide rail 47 is fixedly arranged on the inner wall of the upper side and the lower side of the control cavity 40, a second slide block 46 is arranged on the second slide rail 47 in a sliding manner, a first threaded rod 48 is fixedly arranged on the second sliding block 46, a second threaded rod 45 is arranged in the first threaded rod 48 through threaded connection, a second threaded rod fixing block 72 is fixedly arranged on the inner wall of the lower side of the control cavity 40, the second threaded rod fixing block 72 is connected with the second threaded rod 45 in a sliding manner, a second bevel gear 44 is fixedly arranged at the left end of the second threaded rod 45, and the second bevel gear 44 is connected with the first bevel gear 43 in a meshing manner; the movable mechanism 82 is arranged on the lower side of the control block 71, the movable mechanism 82 comprises a movable table 29, a third motor cavity 30 is arranged in the movable table 29, a third motor 67 is fixedly arranged on the inner wall of the rear side of the third motor cavity 30, the third motor 67 controls the rotation of a third motor shaft 66, a third bevel gear 32 is fixedly arranged on the rear end of the third motor shaft 66, a rotating block 33 is rotatably arranged on the third motor shaft 66, a third threaded rod 35 is rotatably arranged on the upper end of the rotating block 33, a fourth bevel gear 34 is fixedly arranged on the third threaded rod 35, the fourth bevel gear 34 is connected with the third bevel gear 32 through meshing, a first support 37 is fixedly arranged on the left end face of the control block 71, a third threaded rod support 36 is rotatably arranged on the upper end of the first support 37, and the third threaded rod support 36 is connected with the third threaded rod 35 through threads.

Advantageously, the connecting mechanism 80 further comprises a charging cavity 53, the charging cavity 53 is arranged in the charging connecting block 52, a fourth motor 57 is fixedly arranged on the inner wall of the right side of the charging cavity 53, the fourth motor 57 controls the rotation of a fourth motor shaft 55, a third sliding rail 56 is rotatably arranged on the inner wall of the left side and the right side of the fourth motor 57, a third sliding block 54 is slidably arranged on the third sliding rail 56, the third sliding block 54 is in threaded connection with the fourth motor shaft 55, and a charging head 69 is fixedly arranged at the right end of the third sliding block 54.

Advantageously, the control mechanism 81 further comprises an electric wire cavity 11, the electric wire cavity 11 is arranged in the charging pile 10, the inner walls of the front side and the rear side of the electric wire cavity 11 are rotatably provided with a winding wheel shaft 14, a winding wheel 12 is fixedly arranged on the winding wheel shaft 14, two second springs 15 are symmetrically and fixedly arranged on the winding wheel shaft 14 relative to the front side and the rear side of the winding wheel 12, and the charging head 69 is connected with the winding wheel 12 through an electric wire 13.

Beneficially, the control mechanism 81 further includes a fifth motor cavity 16 with a right opening, the fifth motor cavity 16 is located in the charging pile 10, a fourth slide rail 20 is fixedly disposed on a left inner wall of the fifth motor cavity 16, a fourth slide block 22 is slidably disposed on the fourth slide rail 20, a fifth motor 18 is fixedly disposed on a left inner wall of the fifth motor cavity 16, the fifth motor 18 is located on a lower side of the fourth slide rail 20, the fifth motor 18 controls a fifth motor shaft 19 to rotate, the fifth motor shaft 19 is connected with the fourth slide block 22 through a screw thread, a second bracket 21 is fixedly disposed on a left inner wall of the fifth motor cavity 16, a telescopic bracket 17 is rotatably disposed on the second bracket 21 and the fourth slide block 22 together, two third brackets 23 are fixedly disposed on a left end of the telescopic bracket 24, the third bracket 23 is rotatably connected with the telescopic bracket 17, a sixth motor cavity 26 is disposed in the telescopic bracket 24, the inner wall of the lower side of the sixth motor cavity 26 is fixedly provided with a sixth motor 25, the sixth motor 25 controls a sixth motor shaft 27 to rotate, a telescopic ejector rod 28 is arranged in the telescopic rod 24 in a sliding mode, the telescopic ejector rod 28 is connected with the sixth motor shaft 27 through threads, the upper end of the telescopic ejector rod 28 is fixedly connected with the mobile platform 29, the upper end face of the mobile platform 29 is fixedly provided with a fourth support 38, the lower end face of the control block 71 is fixedly provided with a fifth support 39, and the fifth support 39 is connected with the fourth support 38 through rotation.

When the energy-driven automobile needs to be charged, the fifth motor 18 is started to drive the fifth motor shaft 19 to rotate, the fourth slider 22 is driven to move downwards through the threaded connection between the fifth motor shaft 19 and the fourth slider 22, the telescopic bracket 17 is driven to move right through the rotational connection between the fourth slider 22 and the telescopic bracket 17, the sixth motor 25 is started to drive the sixth motor shaft 27 to rotate, the telescopic ejector 28 is driven to move upwards through the threaded connection between the sixth motor shaft 27 and the telescopic ejector 28, the third motor 67 is started to drive the third motor shaft 66 to rotate, the third helical gear 32 is driven to rotate through the fixed connection between the third motor shaft 66 and the third helical gear 32, the fourth helical gear 34 is driven to rotate through the meshed connection between the third helical gear 32 and the fourth helical gear 34, and the third threaded rod 35 is driven to rotate through the fixed connection between the fourth helical gear 34 and the third threaded rod 35, the third threaded rod 35 is driven to rotate around the third motor shaft 66 through the threaded connection between the third threaded rod 35 and the third threaded rod bracket 36 and the rotational connection between the rotating block 33 and the third motor shaft 66, the first bracket 37 is driven to rotate through the rotational connection between the third threaded rod bracket 36 and the first bracket 37, the first bracket 37 is driven to rotate through the rotational connection between the fourth bracket 38 and the fifth bracket 39, the control block 71 is driven to rotate around the fourth bracket 38 through the fixed connection between the first bracket 37 and the control block 71, the second motor 41 is started to drive the second motor shaft 42 to rotate, the first helical gear 43 is driven to rotate through the fixed connection between the second motor shaft 42 and the first helical gear 43, the second helical gear 44 is driven to rotate through the meshed connection between the first helical gear 43 and the second helical gear 44, and the second threaded rod 45 is driven to rotate through the fixed connection between the second helical gear 44 and the second threaded rod 45, the first threaded rod 48 is driven to move rightwards through the threaded connection between the second threaded rod 45 and the first threaded rod 48, the connecting block 49 is driven to move rightwards through the fixed connection between the first threaded rod 48 and the connecting block 49, the first motor 68 is started to drive the first motor shaft 65 to rotate, the second gear 64 is driven to rotate through the fixed connection between the first motor shaft 65 and the second gear 64, the first gear 61 is driven to rotate through the meshed connection between the second gear 64 and the first gear 61, the fixed block bracket 59 is driven to rotate through the meshed connection between the first gear 61 and the fixed block bracket 59, the fixed block 58 is driven to rotate through the fixed connection between the fixed block bracket 59 and the fixed block 58, the fourth motor 57 is started to drive the fourth motor shaft 55 to rotate, the third slider 54 is driven to move rightwards through the threaded connection between the fourth motor shaft 55 and the third slider 54, and the third slider 54 is fixedly connected with the charging head 69, the charging head 69 is driven to move to the right to connect with a charging port on the automobile.

When charging is unexpected, or when fully charged, the second motor 41 is started, the second motor shaft 42 is driven to rotate, the first bevel gear 43 is driven to rotate through the fixed connection of the second motor shaft 42 and the first bevel gear 43, the second bevel gear 44 is driven to rotate through the meshed connection of the first bevel gear 43 and the second bevel gear 44, the second bevel gear 44 is driven to rotate, the second threaded rod 45 is driven to rotate through the fixed connection of the second bevel gear 44 and the second threaded rod 45, the first threaded rod 48 is driven to move left through the threaded connection of the second threaded rod 45 and the first threaded rod 48, the first threaded rod 48 is driven to move left, the connecting block 49 is driven to move left through the fixed connection of the first threaded rod 48 and the connecting block 49, and the automobile charging port is disconnected with a charging.

The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.