SUMMERY OF THE UTILITY MODEL
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the utility model provides the massage instrument, and the connection between the main support frame and the clamping arm of the massage instrument is stable and firm, so that the looseness is not easy to generate.
The massage apparatus according to the present invention comprises: the main supporting frame is provided with a massage head; a clamp arm; and the connecting piece is used for connecting the main support frame and the clamping arms, at least one part of the connecting piece is inserted into the main support frame, attached to the main support frame and fixedly connected to the main support frame, and at least one part of the connecting piece is inserted into the clamping arms, attached to the clamping arms and fixedly connected to the clamping arms.
The connecting piece in the massager is independent of the main support frame and the clamping arm, and the main support frame and the clamping arm can be connected through the connecting piece. Specifically, at least one part of the connecting piece is inserted into the main support frame and is fixedly connected with the main support frame, at least one part of the connecting piece is inserted into the clamping arm and is fixedly connected with the clamping arm, the connecting piece plays a role in intermediate connection, the main support frame and the clamping arm can be fixedly connected into a whole, when the massager is used, the clamping arm generally needs to be operated, the connecting piece is an independent part, abrasion cannot occur, the traditional connection mode of the clamping arm and the main support frame is generally connected together through clamping pieces arranged on the main support frame and the clamping arm, after a user operates the clamping arm for a long time, the clamping pieces in the main support frame and the clamping arm are easily abraded mutually, clamping is not firm, and connection between the main support frame and the clamping arm is not tight. Therefore, the main support frame and the clamping arm are fixedly connected through the connecting piece, the situation can be avoided, and the connecting mode can enable the connecting frame of the clamping arm and the main support frame to be stable and reliable. In addition, because the part of the connecting piece fixedly connected with the main support frame and the part of the connecting piece fixedly connected with the clamping arm have stress concentration and become a weak part of the massager, at least one part of the connecting piece is attached to the main support frame and fixedly connected with the main support frame, at least one part of the connecting piece is attached to the clamping arm and fixedly connected with the clamping arm, so that the part of the connecting piece attached to the main support frame and the part of the connecting piece attached to the clamping arm can play a role in reinforcing the main support frame and the clamping arm, and the main support frame and the clamping arm are prevented from being broken due to stress concentration.
According to some embodiments of the utility model, the clamping arm comprises an inner shell and an outer shell, the inner shell and the outer shell define an accommodating cavity, a part of the connecting piece is arranged in the accommodating cavity, and the part of the connecting piece, which is positioned in the accommodating cavity, is connected with the clamping arm, the outer shell is provided with a first buckling part, the inner shell is provided with a second buckling part, and the first buckling part is buckled with the second buckling part.
According to some embodiments of the present invention, the first buckling part is a first protruding pillar disposed on the housing, and a peripheral wall of the first protruding pillar has a concave part; the second buckling part is a second convex column arranged on the inner shell, the peripheral wall of the second convex column is provided with a convex block, and the convex block is clamped in the concave part.
According to some embodiments of the utility model, the second snap fit is located at an end of the inner shell that connects to the main support frame.
According to some embodiments of the utility model, the second fastening parts are spaced apart, and there are two adjacent second fastening parts in the plurality of second fastening parts, and the connecting member is located between the two adjacent second fastening parts.
According to some embodiments of the utility model, the inner shell has a first connecting portion, the outer shell has a second connecting portion, the first connecting portion and the second connecting portion are connected by a screw, one of the first connecting portion and the second connecting portion is a connecting hole, the other one of the first connecting portion and the second connecting portion is a connecting column, the connecting column is a hollow piece, and the inner wall of the hollow structure has a screw thread, and the screw piece is screwed with the screw thread of the connecting column after passing through the connecting hole.
According to some embodiments of the utility model, the housing comprises: the main body part is connected with the inner shell, one side of the main body part, which is far away from the inner shell, is provided with an embedded groove, and a hollow part is arranged in the embedded groove; the decorating part, at least part of decorating part inlay and locate in the embedded groove, just first buckling parts locates the decorating part, the decorating part has the spacer, the spacer wears to locate in the fretwork portion, the spacer with the fretwork portion joint is fixed.
According to some embodiments of the utility model, the hollowed-out portion is located at an edge of the embedded groove.
According to some embodiments of the utility model, the ornamental piece is bonded to an inner surface of the insertion groove.
According to some embodiments of the present invention, the main support frame comprises a main outer shell and a main inner shell fastened to the main outer shell, the main inner shell faces a user and is a flexible piece, the main inner shell has a plurality of mounting grooves recessed towards the main outer shell, the plurality of mounting grooves are spaced apart along the length direction of the main support frame, and a side wall at an opening of each mounting groove protrudes towards the inside of the mounting groove to construct a mounting flange; the massage head is at least two, every all be equipped with at least one in the mounting groove massage head, every massage head with the interior diapire of mounting groove all is connected, the mounting flange is used for sheltering from the massage head with the hookup location of main tributary strut, and at least two massage head extends the length direction of main tributary strut is spaced apart.
According to some embodiments of the utility model, one of the clamp arm and the main support frame has a slot and the other has a tab that mates with the slot.
According to some embodiments of the utility model, the clamping arms are two, one of the clamping arms is connected to one end of the main support frame, the other clamping arm is connected to the other end of the main support frame, each clamping arm is connected to the main support frame through a connecting piece, and the main support frame and the two clamping arms form an annular structure with an opening.
According to some embodiments of the utility model, the main support frame is an elastic member, the connecting member is a rigid member, and the clamping arm drives the main support frame to elastically deform through the connecting member.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.
Detailed Description
Embodiments of the present invention will be described in detail below, the embodiments described with reference to the drawings being illustrative, and the embodiments of the present invention will be described in detail below.
A massage machine S according to an embodiment of the present invention is described below with reference to fig. 1 to 5.
As shown in fig. 1, 2, 4 and 5, the massage apparatus S includes: main support frame S1, clamp arm S2, and connector S3. The massage head 10 is arranged on the main support frame S1, the number of the clamping arms S2 is two, one of the two clamping arms S2 is connected with one end of the main support frame S1, the other clamping arm S2 is connected with the other end of the main support frame S1, each clamping arm S2 is connected with the main support frame S1 through a connecting piece S3, and the main support frame S1 and the two clamping arms S2 form an annular structure with an opening. Wherein, the massage head 10 can be used to hammer or press the corresponding part of the human body, thereby achieving the effect of massaging the human body.
Specifically, four threaded holes may be provided in the connecting member S3, two of the threaded holes are provided in the portion of the connecting member S3 inserted into the main support frame S1, the other two threaded holes may be provided in the portion of the connecting member S3 inserted into the clamping arm S2, and corresponding threads may be provided on the main support frame S1 and the clamping arm S2, and then the connecting member S3 is connected to the main support frame S1 and the clamping arm S2 by screws, so that the clamping arm S2 and the main support frame S1 may be fixedly connected together.
In the embodiment of the present invention, the main support frame S1 is an elastic component, for example, the main support frame S1 may be a plastic component, a rubber component, or the like with elasticity. The connector S3 is a rigid component, for example, the material of the connector S3 can be hard plastic or hard iron sheet. Thus, the force on clamp arm S2 may be carried by link S3 to main support frame S1, causing main support frame S1 to elastically deform to change the size of the opening of the ring structure. In addition, the connecting piece S3 has a certain rigidity, and can ensure that the clamping arm S2 and the main supporting frame S1 are rigidly connected, so that the clamping arm S2 and the main supporting frame S1 can still be rigidly connected after the clamping arm S2 is used for a long time.
In addition, the main support frame S1 has an arc structure, and when the clamping arm S2 is connected with the main support frame S1, the appearance of the massage apparatus is adapted to the neck of the user, so that the massage apparatus S can be worn more conveniently.
According to the massage apparatus S of the present invention, the connector S3 in the massage apparatus S is provided independently from the main support frame S1 and also independently from the clamp arm S2, and the main support frame S1 and the clamp arm S2 can be connected by the connector S3. Specifically, at least a part of the connecting piece S3 is inserted into the main support frame S1 and fixedly connected to the main support frame S1, at least a part of the connecting piece S3 is inserted into the clamping arm S2 and fixedly connected to the clamping arm S2, and the connecting piece S3 plays a role of intermediate connection, so that the main support frame S1 and the clamping arm S2 can be fixedly connected into a whole, when the massage apparatus is used, the clamping arm S2 generally needs to be operated, and since the connecting piece S3 is a separate component, no abrasion occurs, while the conventional way of connecting the clamping arm and the main support frame generally is that the clamping pieces arranged on the main support frame and the clamping arm are connected together, after the user operates the clamping arm for a long time, the clamping pieces in the main support frame and the clamping arm are easily abraded with each other, which causes the loose connection between the main support frame and the clamping arm. Therefore, the main support frame S1 and the clamping arm S2 are fixedly connected through the connecting piece S3, the situation can be avoided, and the connecting mode can enable the connecting frame of the clamping arm S2 and the main support frame S1 to be stable and reliable.
In addition, because the part of the connecting piece S3 fixedly connected with the main support frame S1 and the part of the connecting piece S3 fixedly connected with the clamping arm S2 have stress concentration and become weaker parts of the massager 100, at least a part of the connecting piece S3 is attached to the main support frame S1 and fixedly connected to the main support frame S1, at least a part of the connecting piece S3 is attached to the clamping arm S2 and fixedly connected to the clamping arm S2, so that the part of the connecting piece S3 attached to the main support frame S1 and the part of the connecting piece S3 attached to the clamping arm S2 can reinforce the main support frame S1 and the clamping arm S2 and prevent the main support frame S1 and the clamping arm S2 from being broken due to stress concentration.
Referring to fig. 1, the clamping arm S2 includes an inner shell 20 and an outer shell 21, the inner shell 20 and the outer shell 21 define a receiving cavity, a portion of the connector S3 is disposed in the receiving cavity, a portion of the connector S3 located in the receiving cavity is connected to the clamping arm S2, and another portion of the connector S3 is located outside the receiving cavity. Specifically, by arranging a part of the connector S3 in the accommodating cavity defined by the inner shell 20 and the outer shell 21, not only the space in the clamping arm S2 can be fully utilized, but also the connector S3 can be prevented from influencing the installation of other components in the massager S, and the reliability of the massager S can be improved. In addition, the receiving space defined by the inner shell 20 and the outer shell 21 can be provided with a screw member to stably and firmly connect and fix the connecting member S3 and the clamping arm S2.
Further, by arranging the connecting piece S3 in the accommodating space defined by the inner shell 20 and the outer shell 21, when the user pulls the clamping arm S2, the connecting piece S3 moves along with the clamping arm S2 relative to the main supporting frame S1, and the accommodating space can provide a certain moving space for the connecting piece S3, so that the force applied by the mutual abutting of the connecting piece S3 and the outer shell 21 or the inner shell 20 can be reduced, and the reliability of the connecting piece S3 can be improved.
In addition, as shown in fig. 5, the outer shell 21 has a first engaging portion 210, as shown in fig. 3, the inner shell 20 has a second engaging portion 200, and the first engaging portion 210 engages with the second engaging portion 200. With the clamping arm S2 structure, since the clamping arm S2 contains more electronic and electrical components and mechanical parts, the outer shell 21 and the inner shell 20 can be mounted together in a snap-fit manner for later maintenance. The buckling part has simple structure, easy arrangement and high reliability.
Specifically, as shown in fig. 3 and 4, the first engaging portion 210 is a first protruding pillar disposed on the outer shell 21, a peripheral wall of the first protruding pillar has a recess 2100, the second engaging portion 200 is a second protruding pillar disposed on the inner shell 20, a peripheral wall of the second protruding pillar has a protrusion 2000, and the protrusion 2000 is clamped in the recess 2100. It should be noted that, the first protruding column and the second protruding column may be both made of plastic and have a certain degree of flexibility, so that when the outer shell 21 is installed on the inner shell 20, the protruding block 2000 of the inner shell 20 can enter the recessed portion 2100 of the outer shell 21 by pressing the outer shell 21, and thus, the installation of the outer shell 21 and the inner shell 20 can be realized.
In the embodiment of the present invention, the second fastening part 200 is located at the end of the inner case 20 connected to the main support frame S1. This may further enhance the securing attachment of the connector S3.
As shown in fig. 3, the second fastening portions 200 are spaced apart from each other, so that the first fastening portions 210 corresponding to the second fastening portions 200 one to one are also multiple, and the second fastening portions 200 are fastened to the first fastening portions 210 one to one, which not only can further improve the stability and firmness of the connection between the outer shell 21 and the inner shell 20, but also can improve the uniformity of the fastening force between the outer shell 21 and the inner shell 20 by changing the distribution state of the two second fastening portions 200, thereby preventing the assembly force from being too concentrated between the inner shell 20 and the outer shell 21, and further improving the fatigue resistance of the clamping arm S2.
Further, as shown in fig. 3, two adjacent second fastening parts 200 exist in the plurality of second fastening parts 200, and the connecting member S3 is located between the two adjacent second fastening parts 200. Set up connecting piece S3 and not only can promote space utilization between this two adjacent second buckling parts 200, can make the structure of massage appearance S compacter, in addition after first buckling part 210 is connected with the lock of second buckling part 200, can play certain limiting displacement to connecting piece S3, can further promote the reliability of connecting piece S3, thereby can further promote the stability and the fastness of centre gripping arm S2 relative main tributary strut S1.
According to an embodiment of the present invention, as shown in fig. 3 and 5, the inner case 20 has a first connection part 201, the outer case 21 has a second connection part 211, the first connection part 201 and the second connection part 211 are connected by a screw, one of the first connection part 201 and the second connection part 211 is a connection hole, the other is a connection column, the connection column is a hollow part, and the inner wall of the hollow structure has a screw, and the screw is screwed with the screw of the connection column after passing through the connection hole. For example, can set up the connecting hole on inner shell 20, set up the spliced pole on outer shell 21, the spliced pole is cavity to be provided with the screw thread on the internal perisporium of spliced pole, wear to establish the connecting hole at the spliced pole after, carrying out screw-thread fit through the screw on screw fitting and the spliced pole inner wall, thereby link together first connecting portion 201 and second connecting portion 211, and then just can realize being in the same place inner shell 20 and outer shell 21 assembly. The connection mode of assembling the inner shell 20 and the outer shell 21 together through the screw elements is firmer and more stable.
As shown in fig. 4, the housing 21 includes: the main body 212 is connected with the inner shell 20, one side of the main body 212, which is far away from the inner shell 20, is provided with an embedded groove 2120, a hollow part 2120 is arranged in the embedded groove 2120, at least part of the decoration 213 is embedded in the embedded groove 2120, the first buckling part 210 is arranged on the decoration 213, the decoration 213 is provided with a positioning piece 2130, and the positioning piece 2130 penetrates through the hollow part 2120.
Specifically, the housing 21 is formed by assembling a main body 212 and a decoration piece 213, wherein the main body 212 is provided with four circular through holes at one end close to the main support frame S1, two circular through holes are provided at one end far away from the main support frame S1, a second connecting part 211 matched with the circular through holes is provided on the decoration piece 213, and the second connecting part 211 is cylindrical in appearance. During assembly, the second connecting portion 211 on the decoration piece 213 can pass through the circular through hole, the positioning piece 2130 on the decoration piece 213 penetrates through the hollow portion 2120 on the main body portion 212, the positioning piece 2130 and the hollow portion 2120 are clamped and fixed, the decoration piece 213 can be limited on the main body portion 212, and finally the first connecting portion 201 on the inner shell 20 and the second connecting portion 211 on the decoration piece 213 are connected through the screw, so that the main body portion 212 and the decoration piece 213 are connected together more stably.
In addition, the insertion groove 2120 of the body portion 212 may restrict the movement of the decoration piece 213. The decoration 213 is further provided with a first fastening part 210, and the first fastening part 210 is fastened with a second fastening part 200 on the main support frame S1, so that the clamping arm S2 can be stably connected with the main support frame S1.
As shown in fig. 4, the hollowed-out portion 2120 is located at an edge of the fitting groove 2120. Specifically, since the decoration 213 is arc-shaped, and the middle portion thereof protrudes to a side away from the inner shell 20, when the decoration 213 is mounted on the main body 212, two end portions of the decoration 213 are easily tilted to a side away from the inner shell 20, the first fastening portion 210 disposed on the decoration 213 near one end of the main support frame S1 can limit one end of the decoration 213 from being tilted when mounted, the positioning piece is disposed at an end portion of the other end of the decoration 213, and the hollow portion 2120 is disposed at an edge of the embedded groove 2120 corresponding to the other end of the decoration 213, so that the positioning piece 2130 on the decoration 213 is in limit engagement with the hollow portion 2120 to limit the tilting of the other end of the decoration 213, and when the decoration 213 is connected with the main body 212, the surface of the connection portion is smooth, and the connection stability between the decoration 213 and the main body 212 can be further improved.
In some embodiments of the utility model, the ornamental piece 213 is bonded to the inner surface of the embedded groove 2120. This can further stabilize the connection of the garnish 213 to the main body portion 212.
According to the embodiment of the present invention, as shown in fig. 2, the main support frame S1 includes a main outer housing 11 and a main inner housing 12 fastened to the main outer housing 11, the main inner housing 12 faces a user and is a flexible member, the main inner housing 12 has a plurality of mounting recesses 120 recessed toward the main outer housing 11, the plurality of mounting recesses 120 are spaced apart along a length direction of the main support frame S1, a side wall at an opening of each mounting recess 120 protrudes toward an inside of the mounting recess 120 to construct a mounting flange 1200, at least two massage heads 10 are provided, at least one massage head 10 is provided in each mounting recess 120, each massage head 10 is connected to an inner bottom wall of the mounting recess 120, the mounting flange 1200 is used for shielding a connection position of the massage head 10 and the main support frame S1, and at least two massage heads 10 are spaced apart along the length direction of the main support frame S1.
Wherein, because the massage head 10 will swing relative to the main support frame S1 to enlarge the massage area and enhance the massage experience of the user, when the massage head 10 swings relative to the main support frame S1, a gap will be generated at the connection part of the massage head 10 and the main support frame S1, the hair of the user can easily enter the gap, after the massage head 10 stops working, the hair of the user is easily clamped by the massage head 10 and the main support frame S1, when the user takes off the massage apparatus S, the massage head 10 and the main support frame S1 will drag the hair, so that the user feels pain and the experience of the user is reduced, therefore, by arranging the mounting flange 1200 and using the mounting flange 1200 to shield the connection position of the massage head 10 and the main support frame S1, the mounting flange 1200 can shield the gap between the massage head 10 and the main support frame S1, thereby preventing the hair from entering the gap and further preventing the hair from being clamped, the use experience of the user can be improved.
Wherein, set up the main inner shell 12 as the flexible member, can make the main inner shell 12 when the atress, can produce certain elastic force and open the space, set up like this, on the one hand can make when the main inner shell 12 can produce certain elastic force with user's neck all the time, and be unlikely to main inner shell 12 to break away from user's neck, on the other hand, can be convenient for the setting of massage head 10, when massage head 10 produces the elastic force with user's neck contact, because main inner shell 12 is the flexible member, so massage head 10 can also compress main inner shell 12, reduce the pressure of massage head 10 and user's neck, thereby can bring the travelling comfort for the user.
Further, in order to facilitate the mounting of the massage head 10, a mounting groove 120 may be provided where the main inner case 12 has a recess toward the main outer case 11, an opening of the mounting groove 120 facing the neck of the user. Specifically, the two mounting grooves 120 may be provided at both ends of the main inner casing 12, and are spaced apart from both ends of the main inner casing 12 by a distance, and the spacing distance between the two mounting grooves 120 is smaller than the spacing distance between the mounting grooves 120 and the ends of the main inner casing 12. The provision of two mounting grooves 120 facilitates the provision of a plurality of massage heads 10 on the mounting grooves 120, thereby achieving a better massage effect. In addition, the mounting flange 1200 is formed in an arc shape, and the mounting flange 1200 is configured to prevent stress concentration from occurring at the connection between the mounting groove 120 and the main inner casing 12 to damage the connection. Thus, the provision of the mounting flange 1200 may make the connection of the mounting groove 120 with the main inner case 12 more stable. In addition, the massage head 10 is arranged in the mounting groove 120, so that a space is formed between the massage head 10 and the bottom of the mounting groove 120, and the mounting groove 120 can be allowed to have enough space for the massage head 10 to swing, so that the massage head 10 can fully exert the function.
In addition, as shown in fig. 2, the number of the massage heads 10 can be four, two massage heads 10 are respectively arranged in each mounting groove 120 at intervals, and each massage head 10 is connected with the inner bottom wall of the mounting groove 120, so that the stability and reliability of the mounting arrangement of the massage heads 10 in the mounting grooves 120 can be ensured, in addition, because the massage heads 10 can swing when in normal operation, and the four massage heads 10 are spaced along the length direction of the main support frame S1, not only can the mutual contact of the four massage heads 10 when swinging be avoided, and the mutual influence among the massage heads 10 can be avoided, but also the massage apparatus of the utility model can massage more parts of the neck, thereby improving the comfort of users.
As shown in fig. 2 and 5, one of the clamp arm S2 and the main support bracket S1 has a slot 110 and the other has a tab 2131 that mates with the slot 110. For example, slots 110 are provided at both ends of main support frame S1, tabs 2131 are provided at the junction of clamping arm S2 and main support frame S1, and tabs 2131 on clamping arm S2 can enter slots 110 when clamping arm S2 is mounted to main support frame S1, thereby further stabilizing the connection of clamping arm S2 to main support frame S1.
As shown in fig. 1, two clamping arms S2 are provided, one of the clamping arms S2 is connected to one end of the main support frame S1, the other clamping arm S2 is connected to the other end of the main support frame S1, each clamping arm S2 is connected to the main support frame S1 through a connecting part S3, and the main support frame S1 and the two clamping arms S2 form an annular structure with an opening, so that the main support frame S1 and the clamping arms S2 form a surrounding package on the neck of the user, which not only improves the wearing experience of the user, but also prevents the massager S from falling off the neck of the user to a certain extent, thereby increasing the wearing stability of the massager S.
Referring to fig. 1, the main support frame S1 is an elastic member, the connecting member S3 is a rigid member, and the clamping arm S2 drives the main support frame S1 to elastically deform through the connecting member S3, so as to change the size of the opening of the ring structure. Specifically, the connecting element S3 is configured as a rigid element, when a user operates the clamping arm S2, i.e. the distance between the clamping arms S2 is changed by snapping the clamping arm S2, the force applied by the user on the clamping arm S2 can be stably and directly transmitted to the main elastic supporting frame S1 through the rigid connecting element S3, so that the main elastic supporting frame S1 is also deformed, and the size of the opening of the annular structure with the opening, which is constructed by the main supporting frame S1 and the two clamping arms S2, can be conveniently changed by the user, so that users of different sizes can smoothly and easily wear the massage apparatus S, wherein when the force applied on the clamping arm S2 is transmitted to the rigid connecting element S3, the rigid connecting element is not easily deformed, so that the force is not absorbed, the deformation of the connecting element S3 can be prevented, and the connecting element S3 can not drive the main supporting frame S1 to deform or the deformation degree is reduced, this may further facilitate the user's use.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the utility model.
In the description of the present invention, "the first feature" and "the second feature" may include one or more of the features.
In the description of the present invention, "a plurality" means two or more. In the description of the present invention, the first feature being "on" or "under" the second feature may include the first and second features being in direct contact, and may also include the first and second features being in contact with each other not directly but through another feature therebetween. In the description of the utility model, "above", "over" and "above" a first feature in a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.
While embodiments of the utility model have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the utility model, the scope of which is defined by the claims and their equivalents.