CN210189868U

CN210189868U - Electric scissors special for pet beauty

Info

Publication number: CN210189868U
Application number: CN201921031807.6U
Authority: CN
Inventors: Shoujun Yu; 于守君
Original assignee: Yu Xiujiang
Current assignee: Yu Xiujiang
Priority date: 2019-07-03
Filing date: 2019-07-03
Publication date: 2020-03-27
Anticipated expiration: 2029-07-03

Abstract

The utility model discloses a pair of electric shears special for pet beauty treatment, wherein a motor is fixed in a first shell, an output shaft of the motor is connected with a first transmission piece, and the first transmission piece and a second transmission piece are meshed for transmission to vertically reverse the power of the output shaft of the motor; the second transmission part is provided with an eccentric bulge on the end face vertical to the axis of the second transmission part at the position eccentric to the axis, the tail end of the movable shear blade is provided with a first sliding groove, the middle part of the swing fork is rotatably connected to the shell, one end of the swing fork is provided with a second sliding groove for being in sliding connection with the eccentric bulge, and the other end of the swing fork is in sliding connection with the first sliding groove; decide the scissors piece and can dismantle the setting at the front end of first casing, move the scissors piece and decide the scissors piece and articulate. The utility model belongs to the technical field of the utensil is pruned to pet hair, the utility model aims to solve the problem that manual pet scissors degree of automation is low among the prior art. The technical effects achieved are as follows: the electric drive of pet scissors is realized, and the scissors head can be quickly replaced.

Description

Electric scissors special for pet beauty

Technical Field

The embodiment of the utility model provides a relate to pet hair trimming utensil technical field, concretely relates to pet special electric scissors that makes beauty.

Background

Along with the improvement of living standard of people, many families can feed pets, in order to meet the visual enjoyment of pet owners, the pet can be beautified, the pet can be shielded from loss of body shapes, and the pet is added with aesthetic feeling, so that the pet dog and owner can enjoy physical and mental effects, the common pet beautification is that the hair on the body surface of the pet is trimmed, the manual scissors for trimming the hair on the body surface of the pet in the prior art are operated by multiple manual scissors, the defects are that the manual scissors need large hand actions of operators, the automation degree of the scissors is low, the hands are easy to fatigue after long-time use, and the electric scissors in the prior art also have the problem that the scissor heads are not replaceable.

SUMMERY OF THE UTILITY MODEL

Therefore, the embodiment of the utility model provides a cosmetic special electric scissors of pet to solve among the prior art manual pet scissors degree of automation low and the difficult problem of changing of scissors tool bit.

In order to achieve the above object, the embodiment of the present invention provides the following technical solutions:

according to the first aspect of the embodiment of the utility model, the electric shears special for pet beauty comprises a motor, a first transmission piece, a second transmission piece, a pendulum fork, a fixed shear piece, a movable shear piece and a first shell; the motor is fixed in the first shell, an output shaft of the motor is connected with the first transmission piece, and the first transmission piece and the second transmission piece are engaged for transmission to vertically reverse the power of the output shaft of the motor; the second transmission part is provided with an eccentric bulge on the end face vertical to the axis of the second transmission part at the position eccentric to the axis, the tail end of the movable shear blade is provided with a first sliding groove, the middle part of the swing fork is rotatably connected to the shell, one end of the swing fork is provided with a second sliding groove for being in sliding connection with the eccentric bulge, and the other end of the swing fork is in sliding connection with the first sliding groove; decide the scissors piece and can dismantle the setting at the front end of first casing, move the scissors piece and decide the scissors piece and articulate.

Furthermore, the first transmission piece is a cylindrical gear, the second transmission piece is a face gear, and the eccentric bulge is arranged on the end face of the face gear.

Furthermore, the first transmission piece is a worm, the second transmission piece is a worm wheel, and the eccentric bulge is arranged on the end face of the worm wheel.

Furthermore, the first transmission piece and the second transmission piece are both conical gears, and the eccentric bulge is arranged on the large-end face of the conical gear of the second transmission piece.

Furthermore, the motor driving device further comprises a coupler, one end of the coupler is connected with an output shaft of the motor, and the other end of the coupler is connected with the first transmission piece.

Furthermore, the device also comprises a fixing plate, an inserting groove, a pressing part, a spring and a U-shaped limiting part; the plug groove is of a long strip-shaped structure with a U-shaped cross section, the plug groove is fixed in the first shell, and the fixing plate covers the open end of the plug groove; the fixing plate is provided with two round holes, two ends of the U-shaped limiting part are respectively inserted into the two round holes, the outer surface of the first shell at the bottom of the inserting groove is provided with a guide hole with an open end, the pressing part is arranged in the guide hole, one end of the U-shaped limiting part penetrates through the bottom of the inserting groove and is fixedly connected with the pressing part, and a spring is arranged between the pressing part and the bottom surface of the guide hole; one straight edge of the U shape of the U-shaped limiting piece is longer than the other straight edge, and the longer straight edge of the U-shaped limiting piece is fixedly connected with the pressing part; the tail of the fixed shear blade is provided with a limiting hole and a limiting groove, the limiting groove and the limiting hole are respectively arranged right opposite to the two round holes, a longer straight edge of the U-shaped limiting part is inserted in the limiting groove, and a shorter straight edge of the U-shaped limiting part is inserted in the limiting hole.

Further, the device also comprises a second shell, a switch and a power socket; the power socket is fixed at the rear end of the second shell, the switch is arranged on the edge of the second shell, the positive pole of the motor is connected with the power socket through a lead, the power socket is connected with the switch through a lead, and the switch is connected with the negative pole of the motor through a lead; the second housing is detachably connected to the first housing.

Further, the switch is any one of a jog switch or a speed regulation switch.

Furthermore, a plurality of clamping parts are arranged at the edge of the first shell, clamping matching parts which correspond to the clamping parts one by one are arranged at the edge of the second shell, and the clamping parts are clamped in the clamping matching parts; joint portion is the structure of seting up the bar groove on first casing edge to the convex part of second casing direction, and joint cooperation portion is the second casing to the convex arch in perpendicular to second casing edge, and protruding joint is in the bar groove.

Further, still include the battery, the battery is connected with power socket electricity, and the battery setting is in the second casing.

The utility model has the advantages of as follows: through the utility model discloses, reduced the hand work of operator when pruning its hair to pet cosmetology, the degree of automation of scissors is higher, has realized moving the electronic drive of scissors piece fixed scissors piece relatively, can realize the quick replacement of scissors tool bit, can change the scissors tool bit of different grade type according to actual demand, for example with the scissors head of the scissors sanitation cockscomb structure cutting edge of cutting edge for the flat sword, simultaneously, the utility model discloses simple structure, the operation degree of difficulty is low, extensive applicability.

Drawings

In order to more clearly illustrate the embodiments of the present 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. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

The structure, ratio, size and the like shown in the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention has no technical essential significance, and any structure modification, ratio relationship change or size adjustment should still fall within the scope which can be covered by the technical content disclosed by the present invention without affecting the efficacy and the achievable purpose of the present invention.

Fig. 1 is a structural diagram of an electric shears for pet beauty provided in some embodiments of the present invention.

Fig. 2 is a back view of the electric shears for pet beauty treatment provided in fig. 1.

Fig. 3 is a structural diagram of an electric shears for pet beauty according to other embodiments of the present invention.

Fig. 4 is a structural diagram of another embodiment of the electric shears for pet beauty treatment.

Fig. 5 is a structural diagram of another pet electric shears according to some embodiments of the present invention.

Fig. 6 is a partial structure view of the electric shears for pet beauty provided in some embodiments of the present invention.

Fig. 7 is a sectional view taken along line a-a of fig. 6, showing a fixed cutting blade of the pair of electric shears for pet beauty treatment.

Fig. 8 is a sectional view taken along line a-a of fig. 6, illustrating the state that the fixed cutting blade is removed.

Fig. 9 is a partial exploded view of the electric shears for pet beauty according to some embodiments of the present invention.

Fig. 10 is a perspective view of another embodiment of the electric shears for pet beauty treatment of the present invention.

Fig. 11 is a partial structure view of a fixing manner of the first casing and the second casing of the electric shears for pet beauty according to some embodiments of the present invention.

In the figure: 1. the motor, 2, first driving medium, 3, the second driving medium, 4, decide the scissors piece, 5, move the scissors piece, 6, first spout, 7, the pendulum fork, 8, the swing pivot, 9, eccentric bulge, 10, the second spout, 11, first casing, 12, joint portion, 13, the shaft coupling, 14, power socket, 15, joint cooperation portion, 16, the switch, 17, the second casing, 18, the inserting groove, 19, the fixed plate, 20, press the splenium, 21, the spring, 22, U-shaped locating part, 23, spacing hole, 24, spacing groove.

Detailed Description

The present invention is described in terms of specific embodiments, and other advantages and benefits of the present invention will become apparent to those skilled in the art from the following disclosure. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

As shown in fig. 1 and fig. 2, the electric shears for pet beauty in this embodiment includes a motor 1, a first transmission member 2, a second transmission member 3, a swing fork 7, a fixed shear blade 4, a movable shear blade 5 and a first housing 11; the motor 1 is fixed in the first shell 11, for example, the motor 1 can be a direct current motor, preferably, the model of the motor 1 can be 16G214EMR29B, besides, the motor 1 can also be another model of motor 1, the output shaft of the motor 1 is connected with the first transmission piece 2, the connection mode between the motor 1 and the first transmission piece 2 can be a key connection, and the first transmission piece 2 and the second transmission piece 3 are meshed for transmission to vertically reverse the power of the output shaft of the motor 1; the second transmission member 3 is provided with an eccentric bulge 9 at an eccentric position of the axis on an end surface perpendicular to the axis, for example, the eccentric bulge 9 is a cylindrical bulge, the eccentric bulge 9 is positioned on the second transmission member 3 near the edge thereof, the tail end of the movable scissor piece 5 is provided with a first chute 6, the first chute 6 is a groove with one open end, the first chute 6 is positioned at the rear end of the hinged position of the movable scissor piece 5 and the fixed scissor piece 4, the middle part of the swing fork 7 is rotatably connected on the shell, a swing rotating shaft 8 is fixed on the shell, the swing fork 7 and the swing rotating shaft 8 are rotatably connected in a sliding manner, or a rolling bearing is arranged at the connecting position of the swing rotating shaft 8 and the swing fork 7 to realize the rotatable connection between the swing fork 7 and the swing rotating shaft 8, the swing fork 7 is of a plate-shaped structure, one end of the swing fork 7 is provided with a second chute 10, and the second chute 10 is used for slidably connecting with, the second sliding groove 10 is a long hole, a cylindrical bulge is arranged at the other end of the swing fork 7, and the swing fork 7 is in sliding connection with the first sliding groove 6 through the cylindrical bulge; decide scissors blade 4 and can dismantle the setting at the front end of first casing 11, decide the connection mode dismantled between scissors blade 4 and the first casing 11 and can be the structure through joint piece joint, also can be with deciding scissors blade 4 and be connected with first casing 11 through bolted connection's mode, move scissors blade 5 and decide scissors blade 4 articulated.

In a specific embodiment, the transmission mechanisms for vertical reversing of the first transmission member 2 and the second transmission member 3 are various, and in some preferred embodiments, as shown in fig. 1, the first transmission member 2 can be a cylindrical gear, the second transmission member 3 can be a face gear, and the eccentric protrusion 9 is arranged on the end face of the face gear; as shown in fig. 4, the first transmission member 2 may be a worm, the second transmission member 3 may be a worm wheel, and the eccentric protrusion 9 may be disposed on an end surface of the worm wheel; as shown in fig. 3, the first transmission member 2 and the second transmission member 3 may be both bevel gears, and the eccentric protrusion 9 is disposed on the large end face of the bevel gear of the second transmission member 3; any one of the above three transmission modes can realize the utility model discloses a power switching-over, in addition, still include the perpendicular reversing mechanism of other structural style.

The technical effect that this embodiment reaches does: through this embodiment, the hand work of operator when having reduced its hair of cosmetic pruning to the pet, the degree of automation of scissors is higher, has realized moving scissors piece 5 and has decided the electronic drive of scissors piece 4 relatively, can realize the quick replacement of scissors tool bit, can change the scissors tool bit of different grade type according to actual demand, for example with the scissors head of the scissors sanitation cockscomb structure cutting edge of cutting edge for the flat sword, simultaneously, this embodiment simple structure, the operation degree of difficulty is low, extensive applicability is general.

Example 2

The electric shears special for pet beauty in this embodiment includes all the technical features of embodiment 1, and in addition, as shown in fig. 5, further includes a coupling 13, one end of the coupling 13 is connected to the output shaft of the motor 1, and the other end of the coupling 13 is connected to the first transmission member 2.

In some specific embodiments, as shown in fig. 6, 7, 8 and 9, the fixing device further includes a fixing plate 19, an insertion groove 18, a pressing portion 20, a spring 21 and a U-shaped limiting member 22; the inserting groove 18 is a long-strip-shaped structure with a U-shaped cross section, for example, the inserting groove 18 is made of an aluminum plate, a plastic plate or a stainless steel plate, the width of the rectangular groove on the inserting groove 18 is the same as that of the tail plate of the fixed shear blade 4, the rectangular groove and the tail plate of the fixed shear blade 4 are in clearance fit, the tail plate of the fixed shear blade 4 can slide in the inserting groove 18 in a reciprocating manner, the inserting groove 18 is fixed in the first housing 11 through an adhesive or a bolt, the fixing plate 19 covers the open end of the inserting groove 18, and the fixing plate 19 is fixed in the first housing 11 through a bolt; the fixing plate 19 is provided with two circular holes, two ends of the U-shaped limiting part 22 are respectively inserted into the two circular holes, the outer surface of the first shell 11 at the bottom of the insertion groove 18 is provided with a guide hole with an open end, the guide hole is a circular hole, the pressing part 20 is of a cylindrical structure, the pressing part 20 is arranged in the guide hole, one end of the U-shaped limiting part 22 passes through the bottom of the insertion groove 18 and is fixedly connected with the pressing part 20, a spring 21 is arranged between the pressing part 20 and the bottom surface of the guide hole, the end part of the pressing part 20 is provided with a cylindrical protrusion, the spring 21 is sleeved on the cylindrical protrusion, one end of the spring 21 abuts against the cylindrical ring surface of the pressing part 20; the U-shaped limiting member 22 is formed by bending a steel wire with a circular cross section, one straight side of the U-shape of the U-shaped limiting member 22 is longer than the other straight side, and the longer straight side of the U-shaped limiting member 22 is fixedly connected with the pressing portion 20; the tail of the fixed shear blade 4 is provided with a limiting hole 23 and a limiting groove 24, wherein the limiting groove 24 is a groove with an open end, the limiting groove 24 and the limiting hole 23 are respectively arranged opposite to the two round holes, a longer straight edge of the U-shaped limiting part 22 is inserted in the limiting groove 24, and a shorter straight edge of the U-shaped limiting part 22 is inserted in the limiting hole 23; in the present embodiment, when the fixed cutting blade 4 needs to be installed, the pressing portion 20 is pressed, the U-shaped limiting member 22 moves towards one side far away from the insertion slot 18, the tail of the fixed cutting blade 4 is inserted into the insertion slot 18, when the limiting hole 23 and the limiting slot 24 at the tail of the fixed cutting blade 4 are aligned with the two circular holes on the fixed plate 19, the pressing portion 20 is released, the U-shaped limiting member 22 moves in the opposite direction under the action of the elastic force of the spring 21, and the fixed cutting blade 4 is clamped in the insertion slot 18; when the fixed cutting blade 4 needs to be removed, the pressing portion 20 is pressed, and when the end of the U-shaped stopper 22 is disengaged from the stopper hole 23, the fixed cutting blade 4 is pulled out.

The beneficial effects in this embodiment are: the output shaft of the motor 1 is connected with the first transmission piece 2 through the coupler 13, so that the requirement on the installation coaxiality of the first transmission piece 2 and the output shaft of the motor 1 is reduced, and the motor 1 can smoothly drive the first transmission piece 2 to rotate; will decide the joint of shear blade 4 in inserting groove 18 through the mode that sets up U-shaped locating part 22, realized deciding shear blade 4 and moving shear blade 5 body structure's quick repacking, realized U-shaped locating part 22 and the spacing hole 23 of deciding shear blade 4 afterbody and spacing groove 24's joint action and break away from the switching of action through pressing down splenium 20, inserting groove 18 has avoided deciding about shear blade 4 and has rocked, U-shaped locating part 22 has realized deciding the spacing joint of shear blade 4 fore-and-aft direction.

Example 3

As shown in fig. 10 and 11, the electric shears for pet beauty in this embodiment includes all the technical features of embodiment 2, and in addition, further includes a second housing 17, a switch 16 and a power socket 14; the power socket 14 is fixed at the rear end of the second shell 17, the switch 16 is arranged on the edge of the second shell 17, the positive pole of the motor 1 is connected with the power socket 14 through a lead, the power socket 14 is connected with the switch 16 through a lead, and the switch 16 is connected with the negative pole of the motor 1 through a lead; the second housing 17 is detachably connected to the first housing 11; the switch 16 is any one of a jog switch or a speed regulation switch, and when the switch 16 is the speed regulation switch, the speed regulation switch can be a roller type or a knob type, and the rotation speed of the motor 1 is regulated by rolling the roller or rotating the knob.

In some specific embodiments, the edge of the first housing 11 is provided with a plurality of clamping portions 12, the edge of the second housing 17 is provided with clamping matching portions 15 corresponding to the plurality of clamping portions 12 one by one, and the clamping portions 12 are clamped in the clamping matching portions 15; the clamping part 12 is a structure that a strip-shaped groove is formed in the part, protruding towards the second shell 17, of the edge of the first shell 11, and the clamping matching part 15 is a protrusion, protruding towards the edge perpendicular to the second shell 17, of the second shell 17, and the protrusion is clamped in the strip-shaped groove; the power supply in this embodiment may be implemented by inserting a power adapter into the power socket 14 for supplying power, or by providing a storage battery, where the storage battery is electrically connected to the power socket 14 and is disposed in the second housing 17.

The beneficial effects in this embodiment are: the switch 16 and the power socket 14 are arranged, so that a user can conveniently control the electric shears, and when the arranged switch 16 is a inching switch, the rotation and the stop of the motor 1 can be controlled through inching; when the arranged switch 16 is a speed regulating switch, the rotating speed can be controlled according to actual requirements; the rapid disassembly and assembly between the first shell 11 and the second shell 17 are realized through the clamping fit between the clamping part 12 and the clamping fit part 15; the storage battery is arranged, so that the storage battery is free from being left unused in a use place, can be carried about and can be used at any time.

Example 4

As shown in fig. 2, the electric shears for pet beauty in this embodiment includes all the technical features of embodiment 3, in addition, the first casing 11 and the second casing 17 are both in a curved shape, the curved shape is matched with the curve when held by the thumb of the human palm, the edge curve of the first casing 11 and the second casing 17 is a curved shape that protrudes outward from the front end of the casing to the rear end and then is concave inward, and granular or stripe-shaped protrusions may be further provided on the outer surface of the second casing 17 of the first casing 11, which has the advantages of increasing the friction force during use and reducing the sliding between the hand and the casing; specifically, the first housing 11 and the second housing 17 are made of integrally cast plastic material.

Although the invention has been described in detail with respect to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made based on the invention. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.

In the present specification, the terms "upper", "lower", "left", "right", "middle", and the like are used for the sake of clarity only, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof are also considered to be the scope of the present invention without substantial changes in the technical content.

Claims

1. The electric scissors special for pet beauty is characterized by comprising a motor (1), a first transmission piece (2), a second transmission piece (3), a swing fork (7), a fixed scissor piece (4), a movable scissor piece (5) and a first shell (11); the motor (1) is fixed in the first shell (11), an output shaft of the motor (1) is connected with the first transmission piece (2), and the first transmission piece (2) and the second transmission piece (3) are engaged for transmission to vertically reverse the power of the output shaft of the motor (1); an eccentric bulge (9) is arranged on the end face, perpendicular to the axis of the second transmission piece (3), of the second transmission piece at the position eccentric to the axis of the second transmission piece, a first sliding groove (6) is formed in the tail end of the movable scissor piece (5), the middle of the swing fork (7) is rotatably connected to the shell, a second sliding groove (10) is formed in one end of the swing fork (7) and used for being in sliding connection with the eccentric bulge (9), and the other end of the swing fork (7) is in sliding connection with the first sliding groove (6); decide scissors piece (4) can dismantle the setting in the front end of first casing (11), move scissors piece (5) with decide scissors piece (4) articulated.

2. The pair of electric shears for pet beauty treatment according to claim 1, wherein the first transmission member (2) is a cylindrical gear, the second transmission member (3) is a face gear, and the eccentric protrusion (9) is disposed on an end face of the face gear.

3. The pair of electric shears for pet beauty treatment according to claim 1, wherein the first transmission member (2) is a worm, the second transmission member (3) is a worm wheel, and the eccentric protrusion (9) is disposed on an end surface of the worm wheel.

4. The pair of electric shears for pet beauty treatment according to claim 1, wherein the first transmission member (2) and the second transmission member (3) are both conical gears, and the eccentric protrusion (9) is disposed on the large end face of the conical gear of the second transmission member (3).

5. The pair of electric shears for pet beauty treatment according to claim 1, further comprising a coupling (13), wherein one end of the coupling (13) is connected to the output shaft of the motor (1), and the other end of the coupling (13) is connected to the first transmission member (2).

6. The pair of electric shears for pet beauty according to claim 1, further comprising a fixing plate (19), an insertion groove (18), a pressing portion (20), a spring (21) and a U-shaped limiting member (22); the plug groove (18) is of a long strip-shaped structure with a U-shaped section, the plug groove (18) is fixed in the first shell (11), and the fixing plate (19) covers the open end of the plug groove (18); two round holes are formed in the fixing plate (19), two ends of the U-shaped limiting piece (22) are respectively inserted into the two round holes, a guide hole with one open end is formed in the outer surface of the first shell (11) at the bottom of the insertion groove (18), the pressing part (20) is arranged in the guide hole, one end of the U-shaped limiting piece (22) penetrates through the bottom of the insertion groove (18) to be fixedly connected with the pressing part (20), and the spring (21) is arranged between the pressing part (20) and the bottom surface of the guide hole; one straight edge of the U shape of the U-shaped limiting piece (22) is longer than the other straight edge, and the longer straight edge of the U-shaped limiting piece (22) is fixedly connected with the pressing part (20); the tail of the fixed shear blade (4) is provided with a limiting hole (23) and a limiting groove (24), the limiting groove (24) and the limiting hole (23) are respectively opposite to the two round holes, a longer straight edge of the U-shaped limiting part (22) is inserted into the limiting groove (24), and a shorter straight edge of the U-shaped limiting part (22) is inserted into the limiting hole (23).

7. The pair of electric shears for pet beauty treatment as claimed in claim 1, further comprising a second housing (17), a switch (16) and a power socket (14); the power socket (14) is fixed at the rear end of the second shell (17), the switch (16) is arranged on the edge of the second shell (17), the positive pole of the motor (1) is connected with the power socket (14) through a lead, the power socket (14) is connected with the switch (16) through a lead, and the switch (16) is connected with the negative pole of the motor (1) through a lead; the second housing (17) is detachably connected to the first housing (11).

8. The electric shears as claimed in claim 7, wherein the switch (16) is any one of a jog switch or a speed-adjusting switch.

9. The pair of electric shears special for pet beauty treatment as claimed in claim 7, wherein a plurality of clamping portions (12) are arranged at the edge of the first shell (11), clamping matching portions (15) corresponding to the clamping portions (12) one by one are arranged at the edge of the second shell (17), and the clamping portions (12) are clamped in the clamping matching portions (15); joint portion (12) do first casing (11) edge to set up the structure in bar groove on the convex part of second casing (17) direction, joint cooperation portion (15) do second casing (17) are to the perpendicular to the convex arch in second casing (17) edge, protruding joint is in the bar groove.

10. Electric shears for pet grooming according to any one of claims 7 to 9, characterized by further comprising an accumulator electrically connected to said power socket (14), said accumulator being arranged inside said second casing (17).